CN104863993A

CN104863993A - Double thread sleeve conical surface friction suppress self-tightening type emergency brake package

Info

Publication number: CN104863993A
Application number: CN201510258310.8A
Authority: CN
Inventors: 魏伯卿
Original assignee: Individual
Current assignee: Individual
Priority date: 2015-05-20
Filing date: 2015-05-20
Publication date: 2015-08-26

Abstract

A double thread sleeve conical surface friction suppress self-tightening type emergency brake package comprises an inner fixing threaded sleeve installed on a wheel shaft in a sleeving mode, an inner movable threaded sleeve, an outer movable threaded inner sleeve and an outer movable threaded outer sleeve; the brake package is characterized in that the inner fixing threaded sleeve is fixedly installed on the wheel shaft, the inner movable threaded sleeve is screwed on an outer thread of the inner fixing threaded sleeve in a sleeving mode, the outer surface of the inner movable threaded sleeve is provided with an inner movable threaded sleeve outer friction surface, the outer movable threaded inner sleeve is arranged close to the outer surface of the inner movable threaded sleeve outer friction surface, the outer movable threaded outer sleeve is screwed on an outer thread of the outer movable threaded inner sleeve, multiple conical holes are formed in the left side face of a hook ring fixing round ring at the right end of the outer movable threaded outer sleeve, a conical head is arranged in the left side opening area of each conical hole, the diameter of the left side opening of each conical hole is D, the diameter of the left end of each conical head is d, and D >= 2d.

Description

Self tightening Emergency braking bag is suppressed in two screw shell conical surface friction

Technical field

The present invention relates to two screw shell conical surface friction and suppress self tightening Emergency braking bag, be applicable to the brake of all automobiles, belong to technical field of vehicle safety.

Background technique

We often hear many automobiles particularly large-scale truck, due to brake failure generation major accident, because the hydraulic coupling that the present braking automobile of one side needs motor to run mostly or atmospheric pressure brake, the brake system long-time running of automobile uses on the other hand, likely to break down or malfunctioning, therefore, ensure that the most important brake of safety does not have standby system particularly not have emergency braking system to be irrational; And the parking brake of nearly all automobile not too works for real brake, particularly automobile is when running at high speed or in descending brake failure or under the unexpected off position of motor, and parking brake does not have any effect.

Domestic and international research, the achievement of production and invention automobile brake system, report and system and device quite a lot, and it is quite a few for the emergency braking system of automobile, but these system and device great majority all more complicated, and mostly all will by means of the hydraulic pressure of engine operation or pressure system during brake, the patent of invention of Wei Baiqing " 201510245915.3 pairs of screw shell conical surfaces friction self tightening Emergency braking bags " design achieves not by means of hydraulic pressure or atmospheric pressure dexterously, insurance, pure machinery, without the need to the Manual braking system of engine power, but foregoing invention may cause two sleeve locking states that rub, the present invention is that two sleeves that rub that make carrying out improving on the basis of foregoing invention become a small angle, thus the self tightening Emergency braking bag of two sleeve lockings that rub can be avoided.

Summary of the invention

The object of this invention is to provide and a kind ofly the axostylus axostyle rotating power of automobile can be utilized mutually to be rubbed by two screw shells and two screw shell conical surfaces screw shell being rotated produce a kind of internal force to make the friction of brake increasing rub and suppress self tightening Emergency braking bag.

Self tightening Emergency braking bag is suppressed in the friction of the two screw shell conical surface, comprises the internal fixtion screw shell be sleeved on wheel axle, mobile screw shell, an outer mobile screw thread inner sleeve and an outer mobile thread jacket cylinder in one; It is characterized in that:

1, internal fixtion screw shell is fixedly mounted on wheel axle, internal fixtion screw shell and wheel axle coaxial inner conductor rotate, the outer surface of internal fixtion screw shell has internal fixtion screw shell outside thread, interior mobile thread bush jacket casing is screwed on the outside thread of internal fixtion screw shell, the internal surface of interior mobile screw shell has interior mobile screw shell internal thread, internal fixtion screw shell outside thread and interior mobile screw shell internal thread match, namely internal fixtion screw shell can rotate forward and interior mobile screw shell be moved right on the outside thread of internal fixtion screw shell or counterrotating is moved to the left on the internal thread of interior mobile screw shell, rotate forward and turn clockwise for being seen as left from the right side in figure, in other words, mobile screw shell rotates forward and interior mobile screw shell is moved to the left on the outside thread of internal fixtion screw shell on the outside thread of internal fixtion screw shell, or the counterrotating on the outside thread of internal fixtion screw shell of interior mobile screw shell makes interior mobile screw shell move right on the outside thread of internal fixtion screw shell, the high order end of internal fixtion screw shell has a left retaining ring of left spring, a left spring is installed with between the right flank of the left retaining ring of left spring and the left side of interior mobile screw shell, the effect of left spring makes the internal thread high order end of interior mobile screw shell screw the outside thread high order end of top to internal fixtion screw shell, and when internal fixtion screw shell to rotate forward i.e. dextrorotation then after making interior mobile screw shell move right on the outside thread of internal fixtion screw shell relative to interior mobile screw shell, when external force disappears, left spring can make interior mobile screw shell on the outside thread of internal fixtion screw shell, be moved to the left the internal thread high order end being returned to interior mobile screw shell and screw the state of top to the outside thread high order end of internal fixtion screw shell, the outer surface of interior mobile screw shell has the outer attrition surface of interior mobile screw shell, the outer surface of the outer attrition surface of interior mobile screw shell is a conical surface, the left end circle radius of conical surface is greater than the right-hand member circle radius of conical surface, and the angle of the outer attrition surface conical surface of interior mobile screw shell and wheel axle shaft axis is α, the outer attrition surface proximity of interior mobile screw shell has an outer mobile screw thread inner sleeve, the inner headed face of outer mobile screw thread inner sleeve is outer mobile screw thread inner sleeve internal friction face, the internal surface in outer mobile screw thread inner sleeve internal friction face is a conical surface, the left end circle radius of conical surface is greater than the right-hand member circle radius of conical surface, the angle of outer mobile screw thread inner sleeve internal friction face conical surface and wheel axle shaft axis is β, α+0.5o≤β≤α+6o, the outer surface of outer mobile screw thread inner sleeve has outer mobile screw thread inner sleeve outside thread, outer mobile screw thread inner sleeve outside thread has screwed outer mobile thread jacket cylinder, the internal circular surfaces of outer mobile thread jacket cylinder has outer mobile thread jacket cylinder internal thread, the phase that matches outer mobile screw thread inner sleeve outside thread and outer mobile thread jacket cylinder internal thread " engages ", and outer mobile screw thread inner sleeve outside thread can move outside on internal thread that counterrotating on thread jacket cylinder internal thread makes outer mobile screw thread inner sleeve move thread jacket cylinder outside and is moved to the left, that is the outer mobile thread jacket cylinder internal thread of outer mobile thread jacket cylinder is contrary with the hand of spiral of the interior mobile screw shell internal thread of interior mobile screw shell, the outer mobile screw thread inner sleeve outside thread of outer mobile screw thread inner sleeve is contrary with the externally threaded hand of spiral of internal fixtion screw shell of internal fixtion screw shell, outer mobile thread jacket cylinder outer left foil shoulder is installed near the outer surface left end of outer mobile thread jacket cylinder, in the brake outsourcing that the outer left foil shoulder cover of outer mobile thread jacket cylinder is stuck in brake outsourcing inner side surface on foil groove, and the phase that matches the outer left foil shoulder of outer mobile thread jacket cylinder and foil groove in brake outsourcing " engages ", the outer left foil shoulder of outer mobile thread jacket cylinder can be moved left and right in foil groove in brake outsourcing, and namely outer mobile thread jacket cylinder can move left and right along foil groove in brake outsourcing, the low order end end face of outer mobile screw thread inner sleeve is installed with a right spring, the right-hand member of right spring is fixedly mounted on the left surface hooking dog collar clamping rings, the effect of right spring is the internal thread low order end making the outside thread low order end of outer mobile screw thread inner sleeve abut in outer mobile thread jacket cylinder all the time, and after the internal thread that counterrotating on the internal thread that outer mobile screw thread inner sleeve moves thread jacket cylinder outside makes outer mobile screw thread inner sleeve move thread jacket cylinder is outside moved to the left, the outside thread low order end that the internal thread that right spring can make outer mobile screw thread inner sleeve move thread jacket cylinder outside when external force disappears rotating to move right is returned to outer mobile screw thread inner sleeve abuts in the internal thread low order end state of outer mobile thread jacket cylinder, hooking the left surface of dog collar clamping rings, there is multiple conical bore in right spring outwards district, there is a nose cone mouth region, left side of each conical bore, cone headed left end fixed installation is moved on the right side of thread jacket cylinder outside, cone headed conehead direction is consistent with the cone pointed orifice direction of conical bore, the left side mouth diameter of conical bore is D, cone headed left end diameter is d, D >=2d, and the central axis moving thread jacket cylinder and outer mobile screw thread inner sleeve outside overlapping with the central axis of wheel axle time, the sharp position of cone headed cone H lower than the point position, hole of conical bore, H < D/2, object is when hook dog collar clamping rings being moved to the left and making that cone headed cone is most advanced and sophisticated extend into the point position, hole of conical bore, the central axis of outer mobile thread jacket cylinder and outer mobile screw thread inner sleeve and the central axis Ф in an angle of internal fixtion screw shell and interior mobile screw shell, Ф >=1o, thus locking state can not be formed when the outer attrition surface of interior mobile screw shell and outer mobile screw thread inner sleeve internal friction face are rubbed, hook dog collar clamping rings vertical with wheel axle, the left surface conical bore hooking dog collar clamping rings has one to hook dog collar away from the side of wheel axle, hook dog collar to be made up of a drum and an annulus, the right-hand member of drum is fixedly linked with the left surface hooking dog collar clamping rings, the left end of drum has an annulus, annulus is vertical with drum, the outer circumferential edge of annulus is connected with the cylindrical of drum, toroidal surface is perpendicular to wheel axle, the right-hand member outer side surface of outer mobile thread jacket cylinder has an annulus to be the outer right baffle ring of outer mobile thread jacket cylinder, the outer right baffle ring of outer mobile thread jacket cylinder is hooking between the annulus right flank of dog collar and the left surface hooking dog collar clamping rings, when hooking dog collar clamping rings and being moved to the left, the nose cone be fixedly linked with the right-hand member of outer mobile thread jacket cylinder in the conical bore ejection hooking dog collar clamping rings left surface, outer mobile thread jacket cylinder and outer mobile screw thread inner sleeve are moved to the left, when hooking dog collar clamping rings and moving right, the left surface that the annulus right flank hooking dog collar passes the outer right baffle ring of outer mobile thread jacket cylinder makes outer mobile thread jacket cylinder and outer mobile screw thread inner sleeve move right, hook dog collar clamping rings and be fixedly mounted on the left end hooking pawl throwout sleeve, the right-hand member hooking pawl throwout sleeve is installed with a left retaining ring of brute spring, the right flank of the left retaining ring of brute spring is installed with a brute spring, the right-hand member of brute spring is fixedly mounted on the left surface of the right retaining ring of brute spring, the right retaining ring of brute spring is fixedly mounted on bearing external extension sleeve on the outer round surface of roulette wheel left surface, in the center hole of hook pawl throwout sleeve, a bearing external extension sleeve is installed, foil groove in multiple hook pawl throwout sleeve is had in the center hole of hook pawl throwout sleeve, the outer round surface of bearing external extension sleeve has the outer foil shoulder of multiple bearing external extension sleeve, to hook in pawl throwout sleeve foil groove and bearing external extension sleeve outward the foil shoulder phase that matches " engage ", make hook pawl throwout sleeve can ahead running take turns axle direction outward at bearing external extension sleeve to move to the left or to the right, when the outer attrition surface of interior mobile screw shell and outer mobile screw thread inner sleeve internal friction face rub mutually, by the outer mobile screw thread inner sleeve internal friction face of the outer attrition surface ejection of interior mobile screw shell, make outer mobile screw thread inner sleeve and outer mobile thread jacket cylinder ejection hook dog collar clamping rings and hook pawl throwout sleeve to move right, the effect of brute spring be exactly slow down hook pawl throwout sleeve move right and the spring buffer power producing a kind of spring is impacted with the friction slowing down the outer attrition surface of interior mobile screw shell and outer mobile screw thread inner sleeve internal friction face, half section, the right side of bearing external extension sleeve is set on the left gear wheel of roulette wheel, roulette wheel, between the annular space between the right gear wheel of roulette wheel and long bearing, half section, the right side outer round surface of bearing external extension sleeve has outside thread, the internal circular surfaces of roulette wheel has internal thread, the phase that matches outside thread and the internal thread of roulette wheel of bearing external extension sleeve " engages ", rotating forward roulette wheel can make bearing external extension sleeve be moved to the left, counterrotating roulette wheel can make bearing external extension sleeve move right, the left gear wheel of roulette wheel and the right gear wheel of roulette wheel are fixed on the inwall of brake outsourcing, the effect of the left gear wheel of roulette wheel and the right gear wheel of roulette wheel limits roulette wheel to rotate around wheel axle and can not move the direction of axis line of ahead running wheel shaft, thus make to draw and rotate runner dynamic bearing external extension sleeve can be with to be moved to the left, bearing external extension sleeve, the left gear wheel of roulette wheel, roulette wheel, a long bearing is had between the right gear wheel of roulette wheel and wheel axle, the inner ring of long bearing is fixedly mounted on the outer surface of wheel axle, the appearance surface cover of long bearing has bearing external extension sleeve, the outer surface of long bearing has the outer foil shoulder of multiple long bearing, the internal circular surfaces of bearing external extension sleeve has foil groove in multiple bearing external extension sleeve, the phase that matches the outer foil shoulder of long bearing and foil groove in bearing external extension sleeve " engages ", bearing external extension sleeve is made to be moved to the left outside long bearing or to move right, the left gear wheel of roulette wheel, the right gear wheel of roulette wheel is fixedly mounted on the inwall of brake outsourcing, brake outsourcing is fixedly mounted on vehicle frame, roulette wheel there is a roulette wheel draw bull stick, roulette wheel draws bull stick to stretch out brake outsourcing by the brake outsourcing arc opening of outsourcing of braking, roulette wheel draws the brake bracing wire on bull stick top to be connected with parking brake bracing wire by multiple upper saw pulley, the right side of roulette wheel is installed with a roulette wheel return spring, the right-hand member of roulette wheel return spring is fixedly mounted on inside the right flank of brake outsourcing, the effect of roulette wheel return spring is after roulette wheel draws bull stick to draw to forward to roulette wheel to draw bull stick to draw to turn ultimate attainment position by the brake bracing wire that roulette wheel is driven at parking brake, when not needing re-use Emergency braking bag and unclamp parking brake, after losing the pulling force effect of brake bracing wire, roulette wheel return spring can make roulette wheel reply counterrotating, thus roulette wheel return spring makes roulette wheel reply rotate and makes bearing external extension sleeve move right thus drive outer mobile thread jacket cylinder and outer mobile screw thread inner sleeve to move right, the outer attrition surface of outer mobile screw thread inner sleeve internal friction face and interior mobile screw shell is finally made to be separated, except solution, mobile screw thread inner sleeve internal friction face and the outer attrition surface of interior mobile screw shell rub and brake.

2, when automobile moves forward in process, when needing to pull Emergency braking to pack tightly and bring to a halt, pull brake bracing wire to the right, driven rotary wheel rotates forward and bearing external extension sleeve is moved to the left, bearing external extension sleeve is moved to the left and compresses brute spring left, the hook pawl throwout sleeve that brute spring promotes again brute spring left end is moved to the left, hook pawl throwout sleeve is moved to the left and drives the hook dog collar clamping rings of left end to be moved to the left, and make nose cone slip into conical bore, nose cone makes outer mobile thread jacket cylinder become a small angle Ф with internal fixtion screw shell with the central axis of interior mobile screw shell with the central axis of outer mobile screw thread inner sleeve after slipping into conical bore, thus can not be formed " locking " when the outer mobile screw thread inner sleeve internal friction face of outer mobile screw thread inner sleeve is rubbed mutually with the outer attrition surface of the interior mobile screw shell of interior mobile screw shell, bearing external extension sleeve be moved to the left make conical bore successively ejection nose cone and outer mobile thread jacket cylinder is moved to the left together with outer mobile screw thread inner sleeve, the outer attrition surface of interior mobile screw shell making the outer mobile screw thread inner sleeve internal friction face of outer mobile screw thread inner sleeve abut in interior mobile screw shell produces friction, because automobile is in the process of moving forward, the wheel axle of automobile rotates forward namely to see that wheel axle is for turning clockwise from right to left, again because the internal fixtion screw shell be fixed on wheel axle can not move left and right, can not rotate around wheel axle with bearing external extension sleeve and outer mobile thread jacket cylinder, so move after screw thread inner sleeve internal friction face abuts in the outer attrition surface of interior mobile screw shell produces friction outside, this is just equivalent to make interior mobile screw shell do counterrotating relative to wheel axle and internal fixtion screw shell, thus interior mobile screw shell is rotated on the outside thread of internal fixtion screw shell move right, interior mobile screw shell rotates the power that moves right and compresses brute spring to the right again conversely on the outside thread of internal fixtion screw shell, because the right retaining ring of brute spring be connected with brute spring right-hand member is fixedly mounted on bearing external extension sleeve, and bearing external extension sleeve is hauled motionless roulette wheel internal thread by bracing wire of braking blocks and can not move right, the friction brake so just making outer mobile screw thread inner sleeve internal friction face abut in the outer attrition surface of interior mobile screw shell by the spring-force driven dual of brute spring is cushioned, constantly move right constantly compress brute spring to the right along with interior mobile screw shell continues to rotate on the outside thread of internal fixtion screw shell, the compressive force that brute spring is born is increasing, brute spring gives the reaction force left in outer mobile thread jacket cylinder and outer mobile screw thread inner sleeve internal friction face also increasing, outer mobile screw thread inner sleeve internal friction face is so just made to abut in the friction that the outer attrition surface of interior mobile screw shell produces also increasing, and then the wheel axle brake weight produced is also increasing, the friction of this increasing friction impels again interior mobile screw shell on the outside thread of internal fixtion screw shell, produce the power moved right further, the friction of outer mobile screw thread inner sleeve internal friction face and the outer attrition surface of interior mobile screw shell is made to become increasing, this increasing friction constantly acts on again wheel axle and brakes to wheel axle, to the last outer mobile screw thread inner sleeve internal friction face " is engaged " with the friction of the outer attrition surface of interior mobile screw shell and wheel axle is stopped the rotation, complete the Emergency braking under automobile forward travel state.

3, when automobile falls back in running process backward, when needing to pull Emergency braking to pack tightly and bring to a halt, pull brake bracing wire to the right, driven rotary wheel rotates forward and bearing external extension sleeve is moved to the left, bearing external extension sleeve is moved to the left and compresses brute spring left, the hook pawl throwout sleeve that brute spring promotes again brute spring left end is moved to the left, hook pawl throwout sleeve is moved to the left and drives the hook dog collar clamping rings of left end to be moved to the left, and make nose cone slip into conical bore, nose cone makes outer mobile thread jacket cylinder become a small angle Ф with internal fixtion screw shell with the central axis of interior mobile screw shell with the central axis of outer mobile screw thread inner sleeve after slipping into conical bore, thus can not be formed " locking " when the outer mobile screw thread inner sleeve internal friction face of outer mobile screw thread inner sleeve is rubbed mutually with the outer attrition surface of the interior mobile screw shell of interior mobile screw shell, bearing external extension sleeve be moved to the left make conical bore successively ejection nose cone and outer mobile thread jacket cylinder is moved to the left together with outer mobile screw thread inner sleeve, the outer attrition surface of interior mobile screw shell making the outer mobile screw thread inner sleeve internal friction face of outer mobile screw thread inner sleeve abut in interior mobile screw shell produces friction, because automobile is falling back in running process backward, the wheel axle of automobile is that namely counterrotating sees that wheel axle is for being rotated counterclockwise from right to left, again because the internal fixtion screw shell be fixed on wheel axle can not move left and right, can not rotate around wheel axle with bearing external extension sleeve and outer mobile thread jacket cylinder, now, mobile screw shell has been screwed in the externally threaded high order end of internal fixtion screw shell, so move after screw thread inner sleeve internal friction face abuts in the outer attrition surface of interior mobile screw shell produces friction outside, this just makes interior mobile screw shell do counterrotating with wheel axle together with internal fixtion screw shell, thus abut in the friction on the outer attrition surface of interior mobile screw shell by outer mobile screw thread inner sleeve internal friction face, on the internal thread driving outer mobile screw thread inner sleeve to move thread jacket cylinder outside, counterrotating makes outer mobile thread jacket cylinder move right, outer mobile thread jacket cylinder moves right and compresses brute spring to the right again conversely, because the right retaining ring of brute spring be connected with brute spring right-hand member is fixedly mounted on bearing external extension sleeve, and bearing external extension sleeve is hauled motionless roulette wheel internal thread by bracing wire of braking blocks and can not move right, the friction brake so just making outer mobile screw thread inner sleeve internal friction face abut in the outer attrition surface of interior mobile screw shell by the spring-force driven dual of brute spring is cushioned, constantly brute spring is compressed to the right along with outer mobile thread jacket cylinder constantly moves right, the compressive force that brute spring is born is increasing, brute spring gives the reaction force left in outer mobile thread jacket cylinder and outer mobile screw thread inner sleeve internal friction face also increasing, outer mobile screw thread inner sleeve internal friction face is so just made to abut in the friction that the outer attrition surface of interior mobile screw shell produces also increasing, and then the wheel axle brake weight produced is also increasing, the power that the friction of this increasing friction impels again outer mobile thread jacket cylinder to move right further, the friction of outer mobile screw thread inner sleeve internal friction face and the outer attrition surface of interior mobile screw shell is made to become increasing, this increasing friction constantly acts on again wheel axle and brakes to wheel axle, to the last outer mobile screw thread inner sleeve internal friction face " is engaged " with the friction of the outer attrition surface of interior mobile screw shell and wheel axle is stopped the rotation, complete the Emergency braking under automobile forward travel state.

4, wheel axle can be major axis, also can be semiaxis.

5, brake outsourcing both sides brake outsourcing in foil well width strengthen, brake outsourcing on the upside of brake outsourcing in foil groove depth lengthen, make there are enough spaces when the right-hand member of outer mobile thread jacket cylinder moves.

the present invention compared with prior art has the following advantages:

1. the present invention be unpowered under emergency brake arrangement, do not need engine power, electric-powered, the outer power such as hydraulic power, Pneumatic pressure power.

2, the present invention is arranged on the wheel axostyle of automobile, does not affect existing braking device, because be telescopic friction, so, take up room little.

3. Emergency braking of the present invention does not form locking and the drift produced causes accident.

4. the present invention makes simply, and braking effect is good, and particularly Emergency braking is effective.

6, the present invention as auxiliary brake, also can replace existing hand brake device.

7, two sleeves mutually rubbing of the present invention are because shaft axis intersects a small angle, thus the friction of two sleeves can not be formed " locking ".

Accompanying drawing explanation

Fig. 1 is the axial section structural representation of the embodiment of the present invention;

Fig. 2 is A-A radial section schematic diagram embodiment illustrated in fig. 1;

Fig. 3 is B-B radial section schematic diagram embodiment illustrated in fig. 1;

Fig. 4 is C-C radial section schematic diagram embodiment illustrated in fig. 1;

Fig. 5 is D-D radial section schematic diagram embodiment illustrated in fig. 1;

Fig. 6 is E-E radial section schematic diagram embodiment illustrated in fig. 1;

Fig. 7 is P enlarged diagram embodiment illustrated in fig. 1;

Fig. 8 is Q enlarged diagram embodiment illustrated in fig. 2;

Fig. 9 is R enlarged diagram embodiment illustrated in fig. 4.

In Fig. 1-9: 1, wheel axle 2, the left retaining ring 3 of left spring, left spring 4, the outer left foil shoulder 5 of outer mobile thread jacket cylinder, internal fixtion screw shell 6, interior mobile screw shell 7, outer mobile screw thread inner sleeve 8, outer mobile thread jacket cylinder 9, right spring 10, hook dog collar 11, the outer right baffle ring 12 of outer mobile thread jacket cylinder, hook the outer foil shoulder 13 of dog collar clamping rings, hook dog collar clamping rings 14, hook pawl throwout sleeve 15, bearing external extension sleeve 16, foil groove 17 in brake outsourcing, the left retaining ring 18 of brute spring, brute spring 19, the left gear wheel 20 of roulette wheel, the right retaining ring 21 of brute spring, the right gear wheel 22 of roulette wheel, roulette wheel 23, roulette wheel return spring 24, long bearing 25, bearing bead 26, brake outsourcing 27, brake outsourcing arc opening 28, conical bore 29, nose cone 30, foil groove 31 in bearing external extension sleeve, the outer foil shoulder 32 of long bearing, roulette wheel draws bull stick 33, brake bracing wire 34, roulette wheel draws bull stick to draw a turn ultimate attainment position 35, internal fixtion screw shell outside thread 36, interior mobile screw shell internal thread 37, the outer attrition surface 38 of interior mobile screw shell, outer mobile screw thread inner sleeve internal friction face 39, outer mobile screw thread inner sleeve outside thread 40, outer mobile thread jacket cylinder internal thread 41, the outer foil shoulder 42 of bearing external extension sleeve, hook foil groove in pawl throwout sleeve.

Embodiment

In the embodiment shown in Fig. 1-9: self tightening Emergency braking bag is suppressed in the friction of the two screw shell conical surface, comprise the outer mobile screw thread inner sleeve 7 of mobile screw shell 6, and an outer mobile thread jacket cylinder 8 in the internal fixtion screw shell 5, that is sleeved on wheel axle 1, it is characterized in that: internal fixtion screw shell 5 is fixedly mounted on wheel axle 1, internal fixtion screw shell 5 and wheel axle 1 coaxial inner conductor rotate, the outer surface of internal fixtion screw shell 5 has internal fixtion screw shell outside thread 35, interior mobile screw shell 6 cover is screwed on the outside thread of internal fixtion screw shell 5, the internal surface of interior mobile screw shell 6 has interior mobile screw shell internal thread 36, internal fixtion screw shell outside thread 35 and interior mobile screw shell internal thread 36 match, namely internal fixtion screw shell 5 can rotate forward and interior mobile screw shell 6 be moved right on the outside thread of internal fixtion screw shell 5 or counterrotating is moved to the left on the internal thread of interior mobile screw shell 6, rotate forward and turn clockwise for being seen as left from the right side in figure, in other words, mobile screw shell 6 rotates forward and interior mobile screw shell 6 is moved to the left on the outside thread of internal fixtion screw shell 5 on the outside thread of internal fixtion screw shell 5, or the counterrotating on the outside thread of internal fixtion screw shell 5 of interior mobile screw shell 6 makes interior mobile screw shell 6 move right on the outside thread of internal fixtion screw shell 5, the high order end of internal fixtion screw shell 5 has a left retaining ring 2 of left spring, a left spring 3 is installed with between the right flank of the left retaining ring of left spring 2 and the left side of interior mobile screw shell 6, the effect of left spring 3 makes the internal thread high order end of interior mobile screw shell 6 screw the outside thread high order end of top to internal fixtion screw shell 5, and when internal fixtion screw shell 5 rotates forward i.e. dextrorotation relative to interior mobile screw shell 6 then after making interior mobile screw shell 6 move right on the outside thread of internal fixtion screw shell 5, when external force disappears, left spring 3 can make interior mobile screw shell 6 on the outside thread of internal fixtion screw shell 5, be moved to the left the internal thread high order end being returned to interior mobile screw shell 6 and screw the state of top to the outside thread high order end of internal fixtion screw shell 5, the outer surface of interior mobile screw shell 6 has the outer attrition surface 37 of interior mobile screw shell, the outer surface of the outer attrition surface 37 of interior mobile screw shell is a conical surface, the left end circle radius of conical surface is greater than the right-hand member circle radius of conical surface, and the angle of outer attrition surface 37 conical surface of interior mobile screw shell and wheel axle 1 shaft axis is α, outer attrition surface 37 proximity of interior mobile screw shell has an outer mobile screw thread inner sleeve 7, the inner headed face of outer mobile screw thread inner sleeve 7 is outer mobile screw thread inner sleeve internal friction face 38, the internal surface in outer mobile screw thread inner sleeve internal friction face 38 is a conical surface, the left end circle radius of conical surface is greater than the right-hand member circle radius of conical surface, the angle of outer mobile screw thread inner sleeve internal friction face 28 conical surface and wheel axle 1 shaft axis is β, α+0.5o≤β≤α+6o, the outer surface of outer mobile screw thread inner sleeve 7 has outer mobile screw thread inner sleeve outside thread 39, outer mobile screw thread inner sleeve outside thread 39 has screwed outer mobile thread jacket cylinder 8, the internal circular surfaces of outer mobile thread jacket cylinder 8 has outer mobile thread jacket cylinder internal thread 40, the phase that matches outer mobile screw thread inner sleeve outside thread 39 and outer mobile thread jacket cylinder internal thread 40 " engages ", and outer mobile screw thread inner sleeve outside thread 39 can move outside on internal thread that counterrotating on thread jacket cylinder internal thread 40 makes outer mobile screw thread inner sleeve 7 move thread jacket cylinder 8 outside and is moved to the left, that is the outer mobile thread jacket cylinder internal thread 40 of outer mobile thread jacket cylinder 8 is contrary with the hand of spiral of the interior mobile screw shell internal thread 36 of interior mobile screw shell, the outer mobile screw thread inner sleeve outside thread 39 of outer mobile screw thread inner sleeve 7 is contrary with the hand of spiral of the internal fixtion screw shell outside thread 35 of internal fixtion screw shell 5, outer mobile thread jacket cylinder outer left foil shoulder 4 is installed near the outer surface left end of outer mobile thread jacket cylinder 8, in the brake outsourcing that outer left foil shoulder 4 cover of outer mobile thread jacket cylinder is stuck in brake outsourcing 26 inner side surface on foil groove 16, and the phase that matches the outer left foil shoulder 4 of outer mobile thread jacket cylinder and foil groove 16 in brake outsourcing " engages ", the outer left foil shoulder 4 of outer mobile thread jacket cylinder can be moved left and right in foil groove 16 in brake outsourcing, and namely outer mobile thread jacket cylinder 8 can move left and right along foil groove 16 in brake outsourcing, the low order end end face of outer mobile screw thread inner sleeve 7 is installed with a right spring 9, the right-hand member of right spring 9 is fixedly mounted on the left surface hooking dog collar clamping rings 13, the effect of right spring 9 is the internal thread low order ends making the outside thread low order end of outer mobile screw thread inner sleeve 7 abut in outer mobile thread jacket cylinder 8 all the time, and after the internal thread that counterrotating on the internal thread that outer mobile screw thread inner sleeve 7 moves thread jacket cylinder 8 outside makes outer mobile screw thread inner sleeve 7 move thread jacket cylinder 8 is outside moved to the left, the outside thread low order end that the internal thread that right spring 9 can make outer mobile screw thread inner sleeve 7 move thread jacket cylinder 8 outside when external force disappears rotating to move right is returned to outer mobile screw thread inner sleeve 7 abuts in the internal thread low order end state of outer mobile thread jacket cylinder 8, hooking the left surface of dog collar clamping rings 13, right spring 9 LHA has multiple conical bore 28, there is a nose cone 29 mouth region, left side of each conical bore 28, the left end fixed installation of nose cone 29 is moved on the right side of thread jacket cylinder 8 outside, the conehead direction of nose cone 29 is consistent with the cone pointed orifice direction of conical bore 28, the left side mouth diameter of conical bore 28 is D, the left end diameter of nose cone 29 is d, D >=2d, and the central axis moving thread jacket cylinder 8 and outer mobile screw thread inner sleeve 7 outside overlapping with the central axis of wheel axle 1 time, the cone point position H lower than the point position, hole of conical bore 28 of nose cone 29, H < D/2, object be hook dog collar clamping rings 13 is moved to the left and make the cone of nose cone 29 tip extend into conical bore 28 hole point position time, the central axis of outer mobile thread jacket cylinder 8 and outer mobile screw thread inner sleeve 7 and the central axis Ф in an angle of internal fixtion screw shell 5 and interior mobile screw shell 6, Ф >=1o, thus locking state can not be formed when the outer attrition surface 37 of interior mobile screw shell is rubbed with outer mobile screw thread inner sleeve internal friction face 38, hook dog collar clamping rings 13 vertical with wheel axle 1, the left surface conical bore 28 hooking dog collar clamping rings 13 has one to hook dog collar 10 away from the side of wheel axle 1, hook dog collar 10 to be made up of a drum and an annulus, the right-hand member of drum is fixedly linked with the left surface hooking dog collar clamping rings 13, the left end of drum has an annulus, annulus is vertical with drum, the outer circumferential edge of annulus is connected with the cylindrical of drum, toroidal surface is perpendicular to wheel axle 1, the right-hand member outer side surface of outer mobile thread jacket cylinder 8 has an annulus to be the outer right baffle ring 11 of outer mobile thread jacket cylinder, the outer right baffle ring 11 of outer mobile thread jacket cylinder is hooking between the annulus right flank of dog collar 10 and the left surface hooking dog collar clamping rings 13, when hooking dog collar clamping rings 13 and being moved to the left, the nose cone 29 be fixedly linked with the right-hand member of outer mobile thread jacket cylinder 8 in conical bore 28 ejection hooking dog collar clamping rings 13 left surface, outer mobile thread jacket cylinder 8 and outer mobile screw thread inner sleeve are moved to the left, when hooking dog collar clamping rings 13 and moving right, the left surface that the annulus right flank hooking dog collar 10 passes the outer right baffle ring 11 of outer mobile thread jacket cylinder makes outer mobile thread jacket cylinder 8 and outer mobile screw thread inner sleeve move right, hook dog collar clamping rings 13 and be fixedly mounted on the left end hooking pawl throwout sleeve 14, the right-hand member hooking pawl throwout sleeve 14 is installed with a left retaining ring 17 of brute spring, the right flank of the left retaining ring 17 of brute spring is installed with a brute spring 18, the right-hand member of brute spring 18 is fixedly mounted on the left surface of the right retaining ring 20 of brute spring, the right retaining ring 20 of brute spring is fixedly mounted on bearing external extension sleeve 15 on the outer round surface of roulette wheel 22 left surface, in the center hole of hook pawl throwout sleeve 14, a bearing external extension sleeve 15 is installed, foil groove 42 in multiple hook pawl throwout sleeve is had in the center hole of hook pawl throwout sleeve 14, the outer round surface of bearing external extension sleeve 15 has the outer foil shoulder 41 of multiple bearing external extension sleeve, to hook in pawl throwout sleeve foil groove 42 and bearing external extension sleeve outward foil shoulder 41 phase that matches " engage ", hook pawl throwout sleeve 14 can be moved to the left or to the right in bearing external extension sleeve 15 outer ahead running wheel shaft 1 direction, when the outer attrition surface 37 of interior mobile screw shell rubs mutually with outer mobile screw thread inner sleeve internal friction face 38, by the outer mobile screw thread inner sleeve internal friction face 38 of outer attrition surface 37 ejection of interior mobile screw shell, make outer mobile screw thread inner sleeve 7 and outer mobile thread jacket cylinder 8 ejection hook dog collar clamping rings 13 and hook pawl throwout sleeve 14 to move right, the effect of brute spring 18 be exactly slow down hook pawl throwout sleeve 14 move right and the spring buffer power producing a kind of spring is impacted with the friction in outer mobile screw thread inner sleeve internal friction face 38 to slow down the outer attrition surface 37 of interior mobile screw shell, half section, the right side of bearing external extension sleeve 15 is set on the left gear wheel 19 of roulette wheel, roulette wheel 22, between the annular space between the right gear wheel 21 of roulette wheel and long bearing 24, half section, the right side outer round surface of bearing external extension sleeve 15 has outside thread, the internal circular surfaces of roulette wheel 22 has internal thread, the phase that matches outside thread and the internal thread of roulette wheel 22 of bearing external extension sleeve 15 " engages ", rotating forward roulette wheel 22 can make bearing external extension sleeve 15 be moved to the left, counterrotating roulette wheel 22 can make bearing external extension sleeve 15 move right, the left gear wheel of roulette wheel 19 and the right gear wheel 21 of roulette wheel are fixed on the inwall of brake outsourcing 26, the effect of the left gear wheel of roulette wheel 19 and the right gear wheel 21 of roulette wheel limits roulette wheel 22 to rotate around wheel axle 1 and can not move the direction of axis line of ahead running wheel shaft 1, thus make to draw and rotate runner 22 dynamic bearing external extension sleeve 15 can be with to be moved to the left, bearing external extension sleeve 15, the left gear wheel 19 of roulette wheel, roulette wheel 22, a long bearing 24 is had between the right gear wheel 21 of roulette wheel and wheel axle 1, the inner ring of long bearing 24 is fixedly mounted on the outer surface of wheel axle 1, the appearance surface cover of long bearing 24 has bearing external extension sleeve 15, the outer surface of long bearing 24 has the outer foil shoulder 31 of multiple long bearing, the internal circular surfaces of bearing external extension sleeve 15 has foil groove 30 in multiple bearing external extension sleeve, the phase that matches the outer foil shoulder 31 of long bearing and foil groove 30 in bearing external extension sleeve " engages ", bearing external extension sleeve 15 is made to be moved to the left outside long bearing 24 or to move right, the left gear wheel 19 of roulette wheel, the right gear wheel 21 of roulette wheel is fixedly mounted on the inwall of brake outsourcing 26, brake outsourcing 26 is fixedly mounted on vehicle frame, roulette wheel 22 there is a roulette wheel draw bull stick 32, roulette wheel draws bull stick 32 to stretch out brake outsourcing 26 by the brake outsourcing arc opening 27 of brake outsourcing 26, roulette wheel draws the brake bracing wire 33 on bull stick 32 top to be connected with parking brake bracing wire by multiple upper saw pulley, the right side of roulette wheel 22 is installed with a roulette wheel return spring 23, the right-hand member of roulette wheel return spring 23 is fixedly mounted on inside the right flank of brake outsourcing 26, the effect of roulette wheel return spring 23 is after roulette wheel draws bull stick 32 to draw to forward to roulette wheel to draw bull stick to draw to turn ultimate attainment position 34 by the brake bracing wire 33 that roulette wheel 22 is driven at parking brake, when not needing re-use Emergency braking bag and unclamp parking brake, after losing the pulling force effect of brake bracing wire 33, roulette wheel return spring 23 can make roulette wheel 22 reply counterrotating, thus roulette wheel return spring 23 makes roulette wheel 22 reply rotate and makes bearing external extension sleeve 15 move right thus drive outer mobile thread jacket cylinder 8 and outer mobile screw thread inner sleeve 7 to move right, the outer attrition surface 37 of outer mobile screw thread inner sleeve internal friction face 38 and interior mobile screw shell is finally made to be separated, except solution, mobile screw thread inner sleeve internal friction face 38 rubs with the outer attrition surface 37 of interior mobile screw shell and brakes.

When automobile moves forward in process, when needing to pull Emergency braking to pack tightly and bring to a halt, pull brake bracing wire 33 to the right, driven rotary wheel 22 rotates forward and bearing external extension sleeve 15 is moved to the left, bearing external extension sleeve 15 is moved to the left and compresses brute spring 18 left, the hook pawl throwout sleeve 14 that brute spring 18 promotes again brute spring 18 left end is moved to the left, hook pawl throwout sleeve 14 is moved to the left and drives the hook dog collar clamping rings 13 of left end to be moved to the left, and make nose cone 29 slip into conical bore 28, nose cone 29 makes outer mobile thread jacket cylinder 8 become a small angle Ф with internal fixtion screw shell 5 with the central axis of interior mobile screw shell 6 with the central axis of outer mobile screw thread inner sleeve 7 after slipping into conical bore 28, thus can not be formed " locking " when the outer mobile screw thread inner sleeve internal friction face 38 of outer mobile screw thread inner sleeve 7 is rubbed with outer attrition surface 37 phase of the interior mobile screw shell of interior mobile screw shell 6, bearing external extension sleeve 15 be moved to the left make conical bore 28 successively ejection nose cone 29 and outer mobile thread jacket cylinder 8 is moved to the left together with outer mobile screw thread inner sleeve 7, the outer attrition surface 37 of interior mobile screw shell making the outer mobile screw thread inner sleeve internal friction face 38 of outer mobile screw thread inner sleeve 7 abut in interior mobile screw shell 6 produces friction, because automobile is in the process of moving forward, the wheel axle 1 of automobile rotates forward namely to see that wheel axle 1 is for turning clockwise from right to left, again because the internal fixtion screw shell 5 be fixed on wheel axle 1 can not move left and right, can not rotate around wheel axle 1 with bearing external extension sleeve 15 and outer mobile thread jacket cylinder 8, so move after screw thread inner sleeve internal friction face 38 abuts in the outer attrition surface 37 of interior mobile screw shell produces friction outside, this is just equivalent to make interior mobile screw shell 6 do counterrotating relative to wheel axle 1 and internal fixtion screw shell 5, thus interior mobile screw shell 6 is rotated on the outside thread of internal fixtion screw shell 5 move right, interior mobile screw shell 6 rotates the power that moves right and compresses brute spring 18 to the right again conversely on the outside thread of internal fixtion screw shell 5, because the right retaining ring 20 of brute spring be connected with brute spring 18 right-hand member is fixedly mounted on bearing external extension sleeve 15, and bearing external extension sleeve 15 is hauled motionless roulette wheel 22 internal thread and blocks by brake bracing wire 33 and can not move right, the friction brake so just making outer mobile screw thread inner sleeve internal friction face 38 abut in the outer attrition surface 37 of interior mobile screw shell by the spring-force driven dual of brute spring 18 is cushioned, constantly brute spring 18 is compressed to the right along with interior mobile screw shell 6 continues to rotate constantly to move right on the outside thread of internal fixtion screw shell 5, the compressive force that brute spring 18 is born is increasing, brute spring 18 gives the reaction force left in outer mobile thread jacket cylinder 8 and outer mobile screw thread inner sleeve internal friction face 38 also increasing, outer mobile screw thread inner sleeve internal friction face 38 is so just made to abut in the friction that the outer attrition surface 37 of interior mobile screw shell produces also increasing, and then wheel axle 1 brake weight produced is also increasing, the friction of this increasing friction impels again interior mobile screw shell 6 on the outside thread of internal fixtion screw shell 5, produce the power moved right further, the friction of the outer attrition surface 37 of outer mobile screw thread inner sleeve internal friction face 38 and interior mobile screw shell is made to become increasing, this increasing friction constantly acts on again wheel axle 1 pair of wheel axle 1 and brakes, to the last outer mobile screw thread inner sleeve internal friction face 38 " is engaged " with the friction of the outer attrition surface 37 of interior mobile screw shell and wheel axle 1 is stopped the rotation, complete the Emergency braking under automobile forward travel state.

When automobile falls back in running process backward, when needing to pull Emergency braking to pack tightly and bring to a halt, pull brake bracing wire 33 to the right, driven rotary wheel 22 rotates forward and bearing external extension sleeve 15 is moved to the left, bearing external extension sleeve 15 is moved to the left and compresses brute spring 18 left, the hook pawl throwout sleeve 14 that brute spring 18 promotes again brute spring 18 left end is moved to the left, hook pawl throwout sleeve 14 is moved to the left and drives the hook dog collar clamping rings 13 of left end to be moved to the left, and make nose cone 29 slip into conical bore 28, nose cone 29 makes outer mobile thread jacket cylinder 8 become a small angle Ф with internal fixtion screw shell 5 with the central axis of interior mobile screw shell 6 with the central axis of outer mobile screw thread inner sleeve 7 after slipping into conical bore 28, thus can not be formed " locking " when the outer mobile screw thread inner sleeve internal friction face 38 of outer mobile screw thread inner sleeve 7 is rubbed with outer attrition surface 37 phase of the interior mobile screw shell of interior mobile screw shell 6, bearing external extension sleeve 15 be moved to the left make conical bore 28 successively ejection nose cone 29 and outer mobile thread jacket cylinder 8 is moved to the left together with outer mobile screw thread inner sleeve 7, the outer attrition surface 37 of interior mobile screw shell making the outer mobile screw thread inner sleeve internal friction face 38 of outer mobile screw thread inner sleeve 7 abut in interior mobile screw shell 6 produces friction, because automobile is falling back in running process backward, the wheel axle 1 of automobile is that namely counterrotating sees that wheel axle 1 is for being rotated counterclockwise from right to left, again because the internal fixtion screw shell 5 be fixed on wheel axle 1 can not move left and right, can not rotate around wheel axle 1 with bearing external extension sleeve 15 and outer mobile thread jacket cylinder 8, now, mobile screw shell 6 has been screwed in the externally threaded high order end of internal fixtion screw shell 5, so move after screw thread inner sleeve internal friction face 38 abuts in the outer attrition surface 37 of interior mobile screw shell produces friction outside, this just makes interior mobile screw shell 6 do counterrotating with wheel axle 1 together with internal fixtion screw shell 5, thus abut in the friction on the outer attrition surface 37 of interior mobile screw shell by outer mobile screw thread inner sleeve internal friction face 38, on the internal thread driving outer mobile screw thread inner sleeve 7 to move thread jacket cylinder 8 outside, counterrotating makes outer mobile thread jacket cylinder 8 move right, outer mobile thread jacket cylinder 8 moves right and compresses brute spring 18 to the right again conversely, because the right retaining ring 20 of brute spring be connected with brute spring 18 right-hand member is fixedly mounted on bearing external extension sleeve 15, and bearing external extension sleeve 15 is hauled motionless roulette wheel 22 internal thread and blocks by brake bracing wire 33 and can not move right, the friction brake so just making outer mobile screw thread inner sleeve internal friction face 38 abut in the outer attrition surface 37 of interior mobile screw shell by the spring-force driven dual of brute spring 18 is cushioned, constantly brute spring 18 is compressed to the right along with outer mobile thread jacket cylinder 8 constantly moves right, the compressive force that brute spring 18 is born is increasing, brute spring 18 gives the reaction force left in outer mobile thread jacket cylinder 8 and outer mobile screw thread inner sleeve internal friction face 38 also increasing, outer mobile screw thread inner sleeve internal friction face 38 is so just made to abut in the friction that the outer attrition surface 37 of interior mobile screw shell produces also increasing, and then wheel axle 1 brake weight produced is also increasing, the power that the friction of this increasing friction impels again outer mobile thread jacket cylinder 8 to move right further, the friction of the outer attrition surface 37 of outer mobile screw thread inner sleeve internal friction face 38 and interior mobile screw shell is made to become increasing, this increasing friction constantly acts on again wheel axle 1 pair of wheel axle 1 and brakes, to the last outer mobile screw thread inner sleeve internal friction face 38 " is engaged " with the friction of the outer attrition surface 37 of interior mobile screw shell and wheel axle 1 is stopped the rotation, complete the Emergency braking under automobile forward travel state.

Wheel axle 1 can be major axis, also can be semiaxis.

In the brake outsourcing of brake outsourcing 26 both sides, foil groove 16 width strengthens, and in the brake outsourcing on the upside of brake outsourcing 26, foil groove 16 degree of depth lengthens, and makes there are enough spaces when the right-hand member of outer mobile thread jacket cylinder 8 moves.

Claims

1. self tightening Emergency braking bag is suppressed in the friction of the two screw shell conical surface, comprise the internal fixtion screw shell (5) be sleeved on wheel axle (1), mobile screw shell (6) in, an outer mobile screw thread inner sleeve (7) and one mobile thread jacket cylinder (8) outward, it is characterized in that: internal fixtion screw shell (5) is fixedly mounted on wheel axle (1), internal fixtion screw shell (5) and wheel axle (1) coaxial inner conductor rotate, the outer surface of internal fixtion screw shell (5) has internal fixtion screw shell outside thread (35), interior mobile screw shell (6) cover is screwed on the outside thread of internal fixtion screw shell (5), the internal surface of interior mobile screw shell (6) has interior mobile screw shell internal thread (36), internal fixtion screw shell outside thread (35) and interior mobile screw shell internal thread (36) match, namely internal fixtion screw shell (5) can rotate forward and interior mobile screw shell (6) be moved right on the outside thread of internal fixtion screw shell (5) or counterrotating is moved to the left on the internal thread of interior mobile screw shell (6), rotate forward and turn clockwise for being seen as left from the right side in figure, in other words, mobile screw shell (6) rotates forward and interior mobile screw shell (6) is moved to the left on the outside thread of internal fixtion screw shell (5) on the outside thread of internal fixtion screw shell (5), or the counterrotating on the outside thread of internal fixtion screw shell (5) of interior mobile screw shell (6) makes interior mobile screw shell (6) move right on the outside thread of internal fixtion screw shell (5), the high order end of internal fixtion screw shell (5) has a left retaining ring of left spring (2), a left spring (3) is installed with between the right flank of the left retaining ring of left spring (2) and the left side of interior mobile screw shell (6), the effect of left spring (3) makes the internal thread high order end of interior mobile screw shell (6) screw the outside thread high order end of top to internal fixtion screw shell (5), and when internal fixtion screw shell (5) to rotate forward i.e. dextrorotation then after making interior mobile screw shell (6) move right on the outside thread of internal fixtion screw shell (5) relative to interior mobile screw shell (6), when external force disappears, left spring (3) can make interior mobile screw shell (6) on the outside thread of internal fixtion screw shell (5), be moved to the left the internal thread high order end being returned to interior mobile screw shell (6) and screw the state of top to the outside thread high order end of internal fixtion screw shell (5), the outer surface of interior mobile screw shell (6) has the outer attrition surface (37) of interior mobile screw shell, the outer surface of the outer attrition surface (37) of interior mobile screw shell is a conical surface, the left end circle radius of conical surface is greater than the right-hand member circle radius of conical surface, and the angle of outer attrition surface (37) conical surface of interior mobile screw shell and wheel axle (1) shaft axis is α, outer attrition surface (37) proximity of interior mobile screw shell has an outer mobile screw thread inner sleeve (7), the inner headed face of outer mobile screw thread inner sleeve (7) is outer mobile screw thread inner sleeve internal friction face (38), the internal surface of outer mobile screw thread inner sleeve internal friction face (38) is a conical surface, the left end circle radius of conical surface is greater than the right-hand member circle radius of conical surface, the angle of outer mobile screw thread inner sleeve internal friction face (28) conical surface and wheel axle (1) shaft axis is β, α+0.5o≤β≤α+6o, the outer surface of outer mobile screw thread inner sleeve (7) has outer mobile screw thread inner sleeve outside thread (39), outer mobile screw thread inner sleeve outside thread (39) has screwed outer mobile thread jacket cylinder (8), the internal circular surfaces of outer mobile thread jacket cylinder (8) has outer mobile thread jacket cylinder internal thread (40), outer mobile screw thread inner sleeve outside thread (39) and outer mobile thread jacket cylinder internal thread (40) phase that matches " engages ", and outer mobile screw thread inner sleeve outside thread (39) can be moved outside on internal thread that the upper counterrotating of thread jacket cylinder internal thread (40) makes outer mobile screw thread inner sleeve (7) move thread jacket cylinder (8) outside and is moved to the left, that is the outer outer mobile thread jacket cylinder internal thread (40) of mobile thread jacket cylinder (8) is contrary with the hand of spiral of the interior mobile screw shell internal thread (36) of interior mobile screw shell, the outer mobile screw thread inner sleeve outside thread (39) of outer mobile screw thread inner sleeve (7) is contrary with the hand of spiral of the internal fixtion screw shell outside thread (35) of internal fixtion screw shell (5), outer mobile thread jacket cylinder outer left foil shoulder (4) is installed near the outer surface left end of outer mobile thread jacket cylinder (8), in the brake outsourcing that outer left foil shoulder (4) cover of outer mobile thread jacket cylinder is stuck in brake outsourcing (26) inner side surface on foil groove (16), and the phase that matches the outer left foil shoulder (4) of outer mobile thread jacket cylinder and foil groove (16) in brake outsourcing " engages ", the outer left foil shoulder (4) of outer mobile thread jacket cylinder can be moved left and right in foil groove (16) in brake outsourcing, namely outer mobile thread jacket cylinder (8) can move left and right along foil groove (16) in brake outsourcing, the low order end end face of outer mobile screw thread inner sleeve (7) is installed with a right spring (9), the right-hand member of right spring (9) is fixedly mounted on the left surface hooking dog collar clamping rings (13), the effect of right spring (9) is the internal thread low order end making the outside thread low order end of outer mobile screw thread inner sleeve (7) abut in outer mobile thread jacket cylinder (8) all the time, and after the internal thread that counterrotating on the internal thread that outer mobile screw thread inner sleeve (7) moves thread jacket cylinder (8) outside makes outer mobile screw thread inner sleeve (7) move thread jacket cylinder (8) is outside moved to the left, the outside thread low order end that the internal thread that right spring (9) can make outer mobile screw thread inner sleeve (7) move thread jacket cylinder (8) outside when external force disappears rotating to move right is returned to outer mobile screw thread inner sleeve (7) abuts in the internal thread low order end state of outer mobile thread jacket cylinder (8), hooking the left surface of dog collar clamping rings (13), right spring (9) LHA has multiple conical bore (28), there is a nose cone (29) mouth region, left side of each conical bore (28), the left end fixed installation of nose cone (29) is moved on the right side of thread jacket cylinder (8) outside, the conehead direction of nose cone (29) is consistent with the cone pointed orifice direction of conical bore (28), the left side mouth diameter of conical bore (28) is D, the left end diameter of nose cone (29) is d, D >=2d, and the central axis moving thread jacket cylinder (8) and outer mobile screw thread inner sleeve (7) outside overlapping with the central axis of wheel axle (1) time, the cone point position H lower than the point position, hole of conical bore (28) of nose cone (29), H < D/2, object be hook dog collar clamping rings (13) is moved to the left and make the cone tip of nose cone (29) extend into conical bore (28) hole point position time, outer mobile thread jacket cylinder (8) and the outer central axis of mobile screw thread inner sleeve (7) and the central axis Ф in an angle of internal fixtion screw shell (5) and interior mobile screw shell (6), Ф >=1o, thus locking state can not be formed when the outer attrition surface (37) of interior mobile screw shell is rubbed with outer mobile screw thread inner sleeve internal friction face (38), hook dog collar clamping rings (13) vertical with wheel axle (1), the left surface conical bore (28) hooking dog collar clamping rings (13) has one to hook dog collar (10) away from the side of wheel axle (1), hook dog collar (10) to be made up of a drum and an annulus, the right-hand member of drum is fixedly linked with the left surface hooking dog collar clamping rings (13), the left end of drum has an annulus, annulus is vertical with drum, the outer circumferential edge of annulus is connected with the cylindrical of drum, toroidal surface is perpendicular to wheel axle (1), the right-hand member outer side surface of outer mobile thread jacket cylinder (8) has an annulus to be the outer right baffle ring (11) of outer mobile thread jacket cylinder, the outer right baffle ring (11) of outer mobile thread jacket cylinder is hooking between the annulus right flank of dog collar (10) and the left surface hooking dog collar clamping rings (13), when hooking dog collar clamping rings (13) and being moved to the left, the nose cone (29) be fixedly linked with the right-hand member of outer mobile thread jacket cylinder (8) in conical bore (28) ejection hooking dog collar clamping rings (13) left surface, outer mobile thread jacket cylinder (8) and outer mobile screw thread inner sleeve are moved to the left, when hooking dog collar clamping rings (13) and moving right, the left surface that the annulus right flank hooking dog collar (10) passes the outer right baffle ring (11) of outer mobile thread jacket cylinder makes outer mobile thread jacket cylinder (8) and outer mobile screw thread inner sleeve move right, hook dog collar clamping rings (13) and be fixedly mounted on the left end hooking pawl throwout sleeve (14), the right-hand member hooking pawl throwout sleeve (14) is installed with a left retaining ring of brute spring (17), the right flank of the left retaining ring of brute spring (17) is installed with a brute spring (18), the right-hand member of brute spring (18) is fixedly mounted on the left surface of the right retaining ring of brute spring (20), the right retaining ring of brute spring (20) is fixedly mounted on bearing external extension sleeve (15) on the outer round surface of roulette wheel (22) left surface, in the center hole of hook pawl throwout sleeve (14), a bearing external extension sleeve (15) is installed, foil groove (42) in multiple hook pawl throwout sleeve is had in the center hole of hook pawl throwout sleeve (14), the outer round surface of bearing external extension sleeve (15) has the outer foil shoulder (41) of multiple bearing external extension sleeve, to hook in pawl throwout sleeve foil groove (42) and bearing external extension sleeve outward foil shoulder (41) phase that matches " engage ", hook pawl throwout sleeve (14) can be moved in ahead running wheel shaft (1) direction outward to the left or to the right at bearing external extension sleeve (15), when the outer attrition surface (37) of interior mobile screw shell rubs mutually with outer mobile screw thread inner sleeve internal friction face (38), by the outer mobile screw thread inner sleeve internal friction face (38) of outer attrition surface (37) ejection of interior mobile screw shell, make outer mobile screw thread inner sleeve (7) and outer mobile thread jacket cylinder (8) ejection hook dog collar clamping rings (13) and hook pawl throwout sleeve (14) to move right, the effect of brute spring (18) be exactly slow down hook pawl throwout sleeve (14) move right and the spring buffer power producing a kind of spring is impacted with the friction of outer mobile screw thread inner sleeve internal friction face (38) to slow down the outer attrition surface (37) of interior mobile screw shell, half section, the right side of bearing external extension sleeve (15) is set on the left gear wheel of roulette wheel (19), roulette wheel (22), between the annular space between the right gear wheel of roulette wheel (21) and long bearing (24), half section, the right side outer round surface of bearing external extension sleeve (15) has outside thread, the internal circular surfaces of roulette wheel (22) has internal thread, the phase that matches outside thread and the internal thread of roulette wheel (22) of bearing external extension sleeve (15) " engages ", rotating forward roulette wheel (22) can make bearing external extension sleeve (15) be moved to the left, counterrotating roulette wheel (22) can make bearing external extension sleeve (15) move right, the left gear wheel of roulette wheel (19) and the right gear wheel of roulette wheel (21) are fixed on the inwall of brake outsourcing (26), the effect of the left gear wheel of roulette wheel (19) and the right gear wheel of roulette wheel (21) limits roulette wheel (22) to rotate around wheel axle (1) and can not move the direction of axis line of ahead running wheel shaft (1), thus make to draw and rotate runner (22) dynamic bearing external extension sleeve (15) can be with to be moved to the left, bearing external extension sleeve (15), the left gear wheel of roulette wheel (19), roulette wheel (22), a long bearing (24) is had between the right gear wheel of roulette wheel (21) and wheel axle (1), the inner ring of long bearing (24) is fixedly mounted on the outer surface of wheel axle (1), the appearance surface cover of long bearing (24) has bearing external extension sleeve (15), the outer surface of long bearing (24) has the outer foil shoulder (31) of multiple long bearing, the internal circular surfaces of bearing external extension sleeve (15) has foil groove (30) in multiple bearing external extension sleeve, the phase that matches the outer foil shoulder (31) of long bearing and foil groove (30) in bearing external extension sleeve " engages ", bearing external extension sleeve (15) is made to be moved to the left outside long bearing (24) or to move right, the left gear wheel of roulette wheel (19), the right gear wheel of roulette wheel (21) is fixedly mounted on the inwall of brake outsourcing (26), brake outsourcing (26) is fixedly mounted on vehicle frame, roulette wheel (22) there is a roulette wheel draw bull stick (32), roulette wheel draws bull stick (32) to stretch out brake outsourcing (26) by the brake outsourcing arc opening (27) of brake outsourcing (26), roulette wheel draws the brake bracing wire (33) on bull stick (32) top to be connected with parking brake bracing wire by multiple upper saw pulley, the right side of roulette wheel (22) is installed with a roulette wheel return spring (23), the right-hand member of roulette wheel return spring (23) is fixedly mounted on inside the right flank of brake outsourcing (26), the effect of roulette wheel return spring (23) is after roulette wheel draws bull stick (32) to draw to forward to roulette wheel to draw bull stick to draw to turn ultimate attainment position (34) by the brake bracing wire (33) that roulette wheel (22) is driven at parking brake, when not needing re-use Emergency braking bag and unclamp parking brake, after losing the pulling force effect of brake bracing wire (33), roulette wheel return spring (23) can make roulette wheel (22) reply counterrotating, thus roulette wheel return spring (23) makes roulette wheel (22) reply rotate and makes bearing external extension sleeve (15) move right thus drive outer mobile thread jacket cylinder (8) and outer mobile screw thread inner sleeve (7) to move right, the outer attrition surface (37) of outer mobile screw thread inner sleeve internal friction face (38) and interior mobile screw shell is finally made to be separated, except solution, mobile screw thread inner sleeve internal friction face (38) is rubbed with the outer attrition surface (37) of interior mobile screw shell and is braked, in the brake outsourcing of brake outsourcing (26) both sides, foil groove (16) width strengthens, and in the brake outsourcing of brake outsourcing (26) upside, foil groove (16) degree of depth lengthens, and makes there are enough spaces when the right-hand member of outer mobile thread jacket cylinder (8) moves.

2. self tightening Emergency braking bag is suppressed in two screw shell end face friction as claimed in claim 1, it is characterized in that: when automobile moves forward in process, when needing to pull Emergency braking to pack tightly and bring to a halt, pull brake bracing wire (33) to the right, driven rotary wheel (22) rotates forward and bearing external extension sleeve (15) is moved to the left, bearing external extension sleeve (15) is moved to the left and compresses brute spring (18) left, the hook pawl throwout sleeve (14) that brute spring (18) promotes again brute spring (18) left end is moved to the left, hook pawl throwout sleeve (14) is moved to the left and drives the hook dog collar clamping rings (13) of left end to be moved to the left, and make nose cone (29) slip into conical bore (28), nose cone (29) makes outer mobile thread jacket cylinder (8) become a small angle Ф with internal fixtion screw shell (5) with the central axis of interior mobile screw shell (6) with the central axis of outer mobile screw thread inner sleeve (7) after slipping into conical bore (28), thus can not be formed " locking " when the outer mobile screw thread inner sleeve internal friction face (38) of outer mobile screw thread inner sleeve (7) is rubbed mutually with the outer attrition surface (37) of the interior mobile screw shell of interior mobile screw shell (6), bearing external extension sleeve (15) be moved to the left make conical bore (28) successively ejection nose cone (29) and outer mobile thread jacket cylinder (8) and outer mobile screw thread inner sleeve (7) and be moved to the left together, the outer attrition surface (37) of interior mobile screw shell making the outer mobile screw thread inner sleeve internal friction face (38) of outer mobile screw thread inner sleeve (7) abut in interior mobile screw shell (6) produces friction, because automobile is in the process of moving forward, the wheel axle (1) of automobile rotates forward namely to see that wheel axle (1) is for turning clockwise from right to left, again because the internal fixtion screw shell (5) be fixed on wheel axle (1) can not move left and right, can not rotate around wheel axle 1 with bearing external extension sleeve (15) and outer mobile thread jacket cylinder (8), so move after screw thread inner sleeve internal friction face (38) abuts in that the outer attrition surface (37) of interior mobile screw shell is upper and produce friction outside, this is just equivalent to make interior mobile screw shell (6) do counterrotating relative to wheel axle (1) and internal fixtion screw shell (5), thus interior mobile screw shell (6) is rotated on the outside thread of internal fixtion screw shell (5) move right, interior mobile screw shell (6) rotates the power that moves right and compresses again brute spring (18) to the right conversely on the outside thread of internal fixtion screw shell (5), because the right retaining ring of brute spring (20) be connected with brute spring (18) right-hand member is fixedly mounted on bearing external extension sleeve (15), and bearing external extension sleeve (15) is hauled motionless roulette wheel (22) internal thread and blocks by brake bracing wire (33) and can not move right, friction brake like this with regard to being made outer mobile screw thread inner sleeve internal friction face (38) abut in the outer attrition surface (37) of interior mobile screw shell by the spring-force driven dual of brute spring (18) is cushioned, constantly move right constantly compress brute spring (18) to the right along with interior mobile screw shell (6) continues to rotate on the outside thread of internal fixtion screw shell (5), the compressive force that brute spring (18) is born is increasing, brute spring (18) is also increasing to the reaction force left of outer mobile thread jacket cylinder (8) and outer mobile screw thread inner sleeve internal friction face (38), outer mobile screw thread inner sleeve internal friction face (38) is so just made to abut in the upper friction produced of the outer attrition surface (37) of interior mobile screw shell also increasing, and then wheel axle (1) brake weight produced is also increasing, the friction of this increasing friction impels again interior mobile screw shell (6) on the outside thread of internal fixtion screw shell (5), produce the power moved right further, the friction of the outer attrition surface (37) of outer mobile screw thread inner sleeve internal friction face (38) and interior mobile screw shell is made to become increasing, this increasing friction constantly acts on again wheel axle (1) and brakes to wheel axle (1), to the last outer mobile screw thread inner sleeve internal friction face (38) " is engaged " with the friction of the outer attrition surface (37) of interior mobile screw shell and wheel axle (1) is stopped the rotation, complete the Emergency braking under automobile forward travel state.

3. self tightening Emergency braking bag is suppressed in two screw shell end face friction as claimed in claim 1, it is characterized in that: when automobile falls back in running process backward, when needing to pull Emergency braking to pack tightly and bring to a halt, pull brake bracing wire (33) to the right, driven rotary wheel (22) rotates forward and bearing external extension sleeve (15) is moved to the left, bearing external extension sleeve (15) is moved to the left and compresses brute spring (18) left, the hook pawl throwout sleeve (14) that brute spring (18) promotes again brute spring (18) left end is moved to the left, hook pawl throwout sleeve (14) is moved to the left and drives the hook dog collar clamping rings (13) of left end to be moved to the left, and make nose cone (29) slip into conical bore (28), nose cone (29) makes outer mobile thread jacket cylinder (8) become a small angle Ф with internal fixtion screw shell (5) with the central axis of interior mobile screw shell (6) with the central axis of outer mobile screw thread inner sleeve (7) after slipping into conical bore (28), thus can not be formed " locking " when the outer mobile screw thread inner sleeve internal friction face (38) of outer mobile screw thread inner sleeve (7) is rubbed mutually with the outer attrition surface (37) of the interior mobile screw shell of interior mobile screw shell (6), bearing external extension sleeve (15) be moved to the left make conical bore (28) successively ejection nose cone (29) and outer mobile thread jacket cylinder (8) and outer mobile screw thread inner sleeve (7) and be moved to the left together, the outer attrition surface (37) of interior mobile screw shell making the outer mobile screw thread inner sleeve internal friction face (38) of outer mobile screw thread inner sleeve (7) abut in interior mobile screw shell (6) produces friction, because automobile is falling back in running process backward, the wheel axle (1) of automobile is that namely counterrotating sees that wheel axle (1) is for being rotated counterclockwise from right to left, again because the internal fixtion screw shell (5) be fixed on wheel axle (1) can not move left and right, can not rotate around wheel axle (1) with bearing external extension sleeve (15) and outer mobile thread jacket cylinder (8), now, mobile screw shell (6) has been screwed in the externally threaded high order end of internal fixtion screw shell (5), so move after screw thread inner sleeve internal friction face (38) abuts in that the outer attrition surface (37) of interior mobile screw shell is upper and produce friction outside, this just makes interior mobile screw shell (6) do counterrotating together with wheel axle (1) and internal fixtion screw shell (5), thus abut in the friction on the outer attrition surface (37) of interior mobile screw shell by outer mobile screw thread inner sleeve internal friction face (38), on the internal thread driving outer mobile screw thread inner sleeve (7) to move thread jacket cylinder (8) outside, counterrotating makes outer mobile thread jacket cylinder (8) move right, outer mobile thread jacket cylinder (8) moves right and compresses again brute spring (18) to the right conversely, because the right retaining ring of brute spring (20) be connected with brute spring (18) right-hand member is fixedly mounted on bearing external extension sleeve (15), and bearing external extension sleeve (15) is hauled motionless roulette wheel (22) internal thread and blocks by brake bracing wire (33) and can not move right, friction brake like this with regard to being made outer mobile screw thread inner sleeve internal friction face (38) abut in the outer attrition surface (37) of interior mobile screw shell by the spring-force driven dual of brute spring (18) is cushioned, constantly brute spring (18) is compressed to the right along with outer mobile thread jacket cylinder (8) constantly moves right, the compressive force that brute spring (18) is born is increasing, brute spring (18) is also increasing to the reaction force left of outer mobile thread jacket cylinder (8) and outer mobile screw thread inner sleeve internal friction face (38), outer mobile screw thread inner sleeve internal friction face (38) is so just made to abut in the upper friction produced of the outer attrition surface (37) of interior mobile screw shell also increasing, and then wheel axle (1) brake weight produced is also increasing, the power that the friction of this increasing friction impels again outer mobile thread jacket cylinder (8) to move right further, the friction of the outer attrition surface (37) of outer mobile screw thread inner sleeve internal friction face (38) and interior mobile screw shell is made to become increasing, this increasing friction constantly acts on again wheel axle (1) and brakes to wheel axle (1), to the last outer mobile screw thread inner sleeve internal friction face (38) " is engaged " with the friction of the outer attrition surface (37) of interior mobile screw shell and wheel axle (1) is stopped the rotation, complete the Emergency braking under automobile forward travel state.