CN112591641A

CN112591641A - Rope control device

Info

Publication number: CN112591641A
Application number: CN202011539055.1A
Authority: CN
Inventors: 陈伟晓
Original assignee: Guangdong Huakun Technology Development Co ltd
Current assignee: Guangdong Huakun Technology Development Co ltd
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-04-02
Anticipated expiration: 2040-12-23
Also published as: CN112591641B

Abstract

The invention discloses a rope control device, which is used for adjusting and controlling a rope on a rope winding shaft and comprises a rope arranger, wherein the rope arranger comprises a reciprocating screw rod and a sliding table which slides along the reciprocating screw rod in a reciprocating manner, the reciprocating screw rod is in transmission connection with the rope winding shaft and is provided with two thread grooves with the same thread pitch and opposite rotation directions; a wedge-shaped surface is formed at the transition position of the two ends of the thread groove and the reciprocating screw rod body, a shifting block is arranged in the sliding table, and the shifting block is connected with one thread groove of the reciprocating screw rod to realize the reciprocating motion of the sliding table on the reciprocating screw rod; the rope guide mechanism is arranged on the sliding table and comprises a rope guide frame and two first guide wheels arranged on the rope guide frame, the two first guide wheels are arranged along the axial direction of the rope winding shaft, the outer circumferential surfaces of the two first guide wheels are arranged oppositely, and the rope is clamped between the outer circumferential surfaces of the two first guide wheels. The rope is prevented from swinging left and right in the rope arranging process and being easy to wear.

Description

Rope control device

Technical Field

The invention relates to the technical field of rope control devices, in particular to a rope control device.

Background

In an apparatus for winding a rope around a rope reel such as a hoist or an elevator, the rope is aligned by a rope control device such as a rope arranger in order to make full use of a space on the rope reel and to avoid rope winding disorder. For example, in chinese patent publication No. CN208471422U, an automatic rope arranger of a winch is fixed right below a winch drum; the rope guider base is formed by combining a rope guider frame and a rope guider side plate; the base of the rope guider is connected with a positive and negative thread lead screw and polish rods which are symmetrically distributed on two sides of the lead screw; one end of a screw rod is connected with a servo motor through a coupler, and a control processor is arranged on one side of the servo motor; and then various sensors are applied and a control processor is applied to facilitate the rope arranger to realize intelligent control. Firstly, a rotary encoder is arranged on a winch drum body; a displacement sensor is arranged on the deviation correcting and guiding mechanism; two ends of the positive and negative thread lead screw are respectively provided with a non-contact inductive proximity switch; and finishing the whole machine assembly. However, the friction between the conventional rope control device and the rope is large, and the rope is easily worn seriously to cause breakage.

Disclosure of Invention

In view of the above, the present invention provides a rope control device, which can solve the problem that the friction between the existing rope control device and the rope is large, and the rope is easy to wear seriously to cause breakage.

The technical scheme of the invention is realized as follows:

a rope control device is used for adjusting and controlling a rope on a rope winding shaft and comprises a rope arranger, wherein the rope arranger comprises a reciprocating screw rod and a sliding table which slides along the reciprocating screw rod in a reciprocating manner, the reciprocating screw rod is in transmission connection with the rope winding shaft and is provided with two thread grooves with the same thread pitch and opposite rotation directions; a wedge-shaped surface is formed at the transition position of the two ends of the thread groove and the reciprocating screw rod body, a shifting block is arranged in the sliding table, and the shifting block is connected with one thread groove of the reciprocating screw rod to realize the reciprocating motion of the sliding table on the reciprocating screw rod; the rope guide mechanism is arranged on the sliding table and comprises a rope guide frame and two first guide wheels arranged on the rope guide frame in a rope clamping mode, the two first guide wheels are arranged along the axial direction of the rope winding shaft and are arranged in a two-way mode, the outer circumferential surfaces of the first guide wheels are arranged oppositely, and the rope is clamped between the outer circumferential surfaces of the two first guide wheels.

As a further alternative of the rope control device, the outer circumferential surface of the first guide wheel is concave, and a channel capable of clamping the rope is formed between the two first guide wheels.

As a further alternative of the rope control device, a guide rod is arranged on the sliding table, and a shaft core of the guide rod is perpendicular to a shaft core of the rope winding shaft; the rope guide frame is slidably arranged on the guide rod.

As a further alternative of the rope control device, a plurality of ropes are arranged on the rope winding shaft, and rope guide mechanisms which are the same in number as the ropes and are arranged at equal intervals are arranged on the sliding table of the rope arranger.

As a further alternative of the rope control device, the rope control device further comprises a rope tensioner, wherein the rope tensioner comprises a driving shaft and a driven shaft, a driving pulley is arranged on the driving shaft, a driven pulley is arranged on the driven shaft, and the driving pulley and the driven pulley are respectively positioned on two sides of the rope to clamp the rope; the driving shaft is in transmission connection with the motor; and a buffer spring is connected to the driving shaft or/and the driven shaft and urges the driving pulley or the driven pulley to press the rope.

As a further alternative of the rope control device, there are a plurality of the driving shafts and the driven shafts, the driving shafts correspond to the driven shafts one by one, the plurality of driving shafts and the motor are buckled with each other through a gear ring to form a serial transmission path, and the driving shaft closest to the motor on the serial transmission path is connected with the buffer spring; the rope is used for enabling the gear on the corresponding driving shaft to be separated from the serial transmission path by pressing the buffer spring.

As a further alternative of the rope control device, the motor is connected with a safety type output mechanism, and the safety type output mechanism comprises a friction fixing ring with an inner gear ring, a planet carrier B, a planet gear B arranged on the planet carrier B, and a sun gear B connected with the motor; the sun gear B, the planet gear B and the friction fixing ring form a planetary gear train structure; a gear positioned at the head of the serial transmission path is arranged on the planet carrier B; and an adjustable braking mechanism for providing a specified braking force for the friction fixing ring is arranged outside the friction fixing ring.

As a further alternative of the rope control device, a wing edge is arranged on the friction fixing ring, the adjustable braking mechanism comprises two friction plates which are respectively clamped on two sides of the wing edge, and the braking force on the friction fixing ring is adjusted by controlling the distance between the two friction plates.

As a further alternative of the rope control device, the rope control device comprises two fixing plates, and two ends of the driving shaft and the driven shaft are respectively arranged on the two fixing plates; the gears on the serial transmission path are arranged in the fixed plate; a sliding groove is formed in the fixing plate, and when the buffer spring is extruded, the driving shaft or the driven shaft corresponding to the buffer spring slides along the sliding groove.

As a further alternative of the rope control device, a rope positioning frame is arranged between the rope guider and the rope tightener, at least two second guide wheels are arranged on the rope positioning frame, the second guide wheels are arranged along the axial direction of the rope winding shaft, the outer circumferential surfaces of the two adjacent second guide wheels are arranged oppositely, and the rope is clamped between the outer circumferential surfaces of the two second guide wheels; the outer circumferential surface of the second guide wheel is concave, and a channel capable of clamping the rope is formed between the two second guide wheels; and a channel formed between every two second guide wheels vertically corresponds to the driving pulley and the driven pulley of a pair of clamping ropes.

The invention has the following beneficial effects: through two first guide pulleys centre gripping ropes, utilize the rotation and the smooth structure of first guide pulley itself, reduce and the rope between frictional force, avoid the rope to take place at the condition that the rope is finally cracked that the rope is finally leaded to in the row rope in-process horizontal hunting and easy wearing and tearing.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of a novel lifter;

FIG. 2 is a schematic structural view of the hidden housing of FIG. 1;

FIG. 3 is a schematic view of the hidden frame and belt of FIG. 2;

FIG. 4 is an exploded view of the internal structure of the rope reel;

FIG. 5 is a cross-sectional view of the cord reel;

FIG. 6 is a schematic structural diagram of a driving device;

FIG. 7 is an exploded view of the drive device;

fig. 8 is an exploded view of the inner stator and the main shaft;

FIG. 9 is a cross-sectional view of the outer cartridge;

FIG. 10 is an exploded view of the brake output mechanism;

FIG. 11 is a cross-sectional view of the drive ring, inner ring member and outer ring member shown mated;

FIG. 12 is a schematic structural view of the first brake mechanism;

FIG. 13 is a schematic structural diagram of a control device;

FIG. 14 is an exploded view of the junction of the driving rocker arm and the follower link;

FIG. 15 is a schematic view showing a connection structure of the pull handle and the pull rod;

FIG. 16 is a cross-sectional view of the junction of the drive rocker arm and the follower swivel;

FIG. 17 is a schematic structural view of the rope guider;

FIG. 18 is an exploded view of the rope arranger;

FIG. 19 is a schematic view of the cord tightener;

FIG. 20 is a schematic view of the internal structure of the rope tensioner;

fig. 21 is an exploded view of the rope tensioner.

In the figure: 1. a frame; 11. mounting a plate; 12. a housing; 121. a roller; 2. a rope winding shaft; 21. a partition plate; 22. a driven ring; 3. a drive device; 31. a main shaft; 311. an internally toothed central wheel; 32. an external rotation drive; 321. an inner stator; 322. an outer rotor; 33. a brake-type output mechanism; 331. a planet carrier A; 3311. an output shaft; 3312. a planet wheel A; 3313. an output gear; 332. a drive ring; 3321. a drive plug-in; 333. an inner ring member; 3331. a sun gear A; 3332. a roller; 3333. a first elastic pushing member; 3334. a recess; 34. a speed reduction mechanism; 35. fixing an end cover; 36. an outer barrel member; 361. an outer ring member; 37. a first brake mechanism; 371. braking the disc; 372. a brake block; 373. a second elastic pushing piece; 374. a first poke rod; 4. a second brake mechanism; 41. a drum brake sheet; 42. a brake arm; 43. a third elastic pushing piece; 5. a control device; 51. a driving rocker arm; 52. a driven rotating rod; 521. a first plectrum; 522. a second plectrum; 53. an adapter; 531. a first latch; 54. a clamping block; 541. a second latch; 55. a rotating shaft; 56. a top block; 57. a first elastic member; 58. a pull rod; 59. lifting the handle; 6. a rope control device; 61. a rope guider; 611. a reciprocating screw rod; 6111. a thread groove; 612. a sliding table; 6121. shifting blocks; 613. a rope guide mechanism; 6131. a rope guide frame; 6132. a first guide wheel; 6133. a guide bar; 62. a rope tensioner; 621. a drive shaft; 6211. a driving pulley; 622. a driven shaft; 6221. a driven pulley; 623. a motor; 6231. a sun gear B; 624. a safety output mechanism; 6241. a friction fixing ring; 6242. a wing edge; 6243. a planet carrier B; 6244. a planet wheel B; 6245. a friction plate;

a. a first direction; b. a second direction; l, connecting the transmission path in series.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "above," and "over" a second feature may mean that the first feature is directly above or obliquely above the second feature, or that only the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 to 12, there is shown a novel lifter comprising an axially hollow rope winding shaft 2, a driving device 3 arranged inside the rope winding shaft 2, and a rope arranged on the rope winding shaft 2; the driving device 3 comprises a main shaft 31, an external rotation driver 32, a braking output mechanism 33 and a first braking mechanism 37 for braking the main shaft 31; the external rotor driver 32 comprises an inner stator 321 sleeved on the main shaft 31 and an outer rotor 322 sleeved on the outer periphery of the inner stator 321; the inner stator 321 and the main shaft 31 can rotate relatively; the end of the main shaft 31 penetrating through the inner stator 321 is provided with an internally-toothed central gear 311 with an internally-toothed ring gear;

the brake type output mechanism 33 comprises a planet carrier A331, a driving ring 332, an inner ring member 333 and an outer ring member 361 which are arranged concentrically with the main shaft 31; an end face of the planet carrier A331, which faces away from the main shaft 31, is provided with a concentric output shaft 3311 and a plurality of planet wheels A3312 arranged along the circumferential direction of the output shaft 3311; the driving ring 332 and the inner ring 333 are sequentially sleeved on the output shaft 3311, a sun gear a 3331 penetrating through the driving ring 332 is arranged on the end surface of the inner ring 333 facing the planet gear a 3312, and the sun gear a 3331, the plurality of planet gears a 3312 and the inner-tooth central gear 311 form a planetary gear train structure; the outer ring member 361 is embedded on the periphery of the inner ring member 333 and forms a roller 3332 type one-way clutch structure with the inner ring member; the driving ring 332 is fixedly connected with the outer rotor 322, and a driving insert 3321 for unlocking the outer ring 361 and the inner ring 333 and driving the inner ring 333 to rotate is arranged on the end surface of the driving ring 332 opposite to the inner ring 333;

the inner stator 321 and the outer ring member 361 remain fixed against rotation; one end of the output shaft 3311 penetrating through the inner ring member 333 is in transmission connection with the rope winding shaft 2.

Specifically, in the initial state, the first brake mechanism 37 brakes the main shaft 31 to keep it fixed and not rotated; when the rope needs to be wound and unwound, the outward turning type driver 32 works, the outer rotor 322 rotates, the outer rotor 322 drives the driving ring 332 to rotate, the driving insert 3321 on the driving ring 332 drives the inner ring piece 333 to rotate, and the sun gear a 3331 on the inner ring piece 333 rotates; under the condition that the internal-tooth central gear 311 is fixed and does not rotate, the plurality of planet wheels A3312 revolve around the sun wheel A3331, so that the planet carrier A331 rotates, and the output shaft 3311 on the planet carrier A331 drives the rope winding shaft 2 to rotate, so that the rope is wound and unwound. When the external rotation type driver 32 stops working, the driving ring 332 is fixed and does not rotate, when the rope winding shaft 2 is going to rotate and pay out the rope, the inner ring 333 and the outer ring 361 are locked in one way, under the condition that the internal tooth center wheel 311 and the sun wheel a 3331 are fixed and do not rotate at the same time, the planet carrier a 331 cannot rotate, the output shaft 3311 on the planet carrier a 331 enables the rope winding shaft 2 to be fixed and do not rotate, and the rope cannot be paid out.

In the above process, the planet carrier a 331 is fixed by the internal-tooth central wheel 311 and the sun gear a 3331, that is, the main shaft 31, the external-rotation driver 32 and the external ring member jointly load the torque force of the lifting object, so that the external-rotation driver 32 is prevented from bearing too large load, the service life of the driving device 3 is effectively ensured, and the driving device is safer.

In addition, when the external rotation type driver 32 fails to be driven, the internal gear center wheel 311 can be rotated by adjusting the braking force of the first braking mechanism 37 to the main shaft 31, and the hoists apply a torsion force to the rope winding shaft 2 through the rope in a state that the inner ring member 333 and the sun gear a 3331 are fixed without rotating, and the planet gear a 3312 of the planet carrier a 331 rotates around the inner gear ring of the internal gear center wheel 311, so that the rope can be paid out from the rope winding shaft 2. In combination with the practical application scenario, an operator carries the novel lifter, fixes the end of the rope on a high-place fixed object, and controls the outward rotating driver 32 to lift, and when the outward rotating driver 32 fails, the braking force of the first braking mechanism 37 on the main shaft 31 can be reduced, so that the rope can fall; as a matter of course, the magnitude of the braking force of the first brake mechanism 37 on the main shaft 31 affects the landing speed.

In the above embodiment, referring to fig. 10 and 11, a plurality of concave portions 3334 are provided on the outer circumferential surface of the inner ring member 333 at predetermined intervals along the circumferential direction, the bottom surfaces of the concave portions 3334 are provided with inclined surfaces inclined along the circumferential direction, and the inclined surfaces and the fitting surfaces of the outer ring member 361 form a certain wedge angle; a roller 3332 and a first elastic pushing member 3333 for pushing the roller 3332 in a direction in which a wedge angle is narrowed are accommodated in the concave portion 3334; the driving inserts 3321 of the driving ring 332 correspond to the recesses 3334 one to one, the driving inserts 3321 are inserted into the recesses 3334, and the driving inserts 3321 are located between the rollers 3332 and one side of the recesses 3334 close to a narrow direction of a wedge angle.

In other words, as illustrated in the angle of fig. 11, when the outer rotor driver 32 drives the rope reel 2 to pay out the rope, the outer rotor 322 drives the driver to rotate, and the driving insert 3321 on the driver pushes the roller 3332 to the direction of the first elastic pushing element 3333, so as to drive the inner ring member 333 to rotate clockwise in fig. 11; when the outer rotary actuator 32 drives the rope reel 2 to reel the rope, the driving insert 3321 of the actuator directly pushes against the side wall of the recess 3334 of the inner ring 333, so as to drive the inner ring 333 to rotate counterclockwise in fig. 11; when the external rotor type driver 32 is not operated, the driving insert 3321 is fixed, if the rope needs to be paid out around the rope shaft 2, the inner ring member 333 needs to rotate clockwise in fig. 11, on one hand, the driving insert 3321 blocks the side wall of the concave portion 3334 of the inner ring member 333, on the other hand, the first elastic pushing member 3333 pushes the roller 3332 to the narrow direction of the wedge angle so as to be locked, and the inner ring member 333 is fixed and does not rotate; thus, when the external rotation type driver 32 does not rotate, the torsion force applied to the rope winding shaft 2 is borne by the outer ring part 361, the external rotation type driver 32 and the main shaft 31, and the safety is improved.

In the above embodiment, in order to fix the outer ring component 361, referring to fig. 7 and 9, the outer cylinder component 36 is further included, the outer cylinder component 36 is axially hollow, the spindle 31, the outer rotary actuator 32 and the brake output mechanism 33 are disposed in the outer cylinder component 36, and the outer ring component 361 is fixedly connected to the outer cylinder component 36. One end of the inner stator 321 is provided with a fixed end cover 35, and the outer cylinder 36 is fixedly connected with the fixed end cover 35. This also maintains the compactness of the overall structure.

In addition, in order to facilitate the transmission of the rope winding wheel by the output shaft 3311, referring to fig. 5 and 10, a driven ring 22 is fixed inside the rope winding shaft 2; the end of the output shaft 3311 passing through the inner ring member 333 is connected with an output gear 3313, and the output gear 3313 is connected with a speed reducing mechanism 34; the speed reducing mechanism 34 may be a planetary reducer, an annular gear is provided on the outer cylinder 36, the speed reducing mechanism 34 is engaged with the annular gear, and the driven ring 22 may be a planet carrier of the last stage of the planetary reducer, and the driven ring 22 is driven to rotate, so as to drive the rope winding shaft 2 to rotate. It should be further emphasized that by stopping the outward turning actuator 32 or by braking the spindle 31 to fix the planet carrier a 331 in front of the speed reducing mechanism 34 to brake the rope winding shaft 2, the braking force required to brake the rope winding shaft 2 can be reduced, resulting in better braking effect and faster braking response.

In some specific embodiments, referring to fig. 1 to 3, the novel lifter may further include a frame 1, wherein a mounting plate 11 is disposed on the frame 1, and the inner stator 321 is fixed on the frame 1 or the mounting plate 11; the housing 1 is covered with a casing 12. Wherein, the fixed end cap 35 can be fixed on the frame 1 or the mounting plate 11, that is, the outer cylinder 36 and the inner stator 321 are fixed; in addition, the whole shape of the frame 1 is a frame structure, and can also be designed into an arc shape fitting the back according to human engineering, and a safety belt is provided for an operator to carry on the back, wherein the safety belt can comprise a shoulder belt, a waist belt and a leg strap. The mounting plate 11 in this embodiment may be a double-layered structure to facilitate mounting of various gear sets, bearings, and the like.

In some specific embodiments, a first brake mechanism 37 of a specific structure is provided, and referring to fig. 3, 8 and 12, a brake disc 371 is provided on the other end portion of the main shaft 31 with respect to the internally-toothed central wheel 311; the first brake mechanism 37 comprises a brake block 372 for braking the brake disc 371 and a second elastic pushing piece 373 for pushing the brake block 372 towards the brake disc 371; a first poke rod 374 is connected to the brake block 372, and the brake block 372 is far away from the brake disc 371 by poking the first poke rod 374; the first brake mechanism 37 is in a braking state in an initial state, and the control device 5 controls the magnitude of the braking force of the first brake mechanism 37 on the brake disk 371. In other words, under the condition that the first toggle rod 374 is not toggled, the second elastic pushing member 373 pushes the brake block 372 towards the brake disc 371, so that the spindle 31 is fixed and does not rotate; when the main shaft 31 needs to be rotated, the control device 5 is used for toggling the first toggle rod 374, the second elastic pushing piece 373 is squeezed, and the first toggle rod 374 releases the brake on the brake disc 371; of course, the braking force of the brake block 372 to the brake disk 371 is affected by the magnitude of the shifting amplitude of the first shifting rod 374.

In some specific embodiments, in order to further improve the safety of the novel actuator, referring to fig. 4, a second brake mechanism 4 is disposed in the rope winding shaft 2, the second brake mechanism 4 is a drum brake structure, the second brake mechanism 4 includes two arc-shaped drum brake sheets 41 for braking the inner circumferential wall of the rope winding shaft 2, each end of the two drum brake sheets 41 is hinged, and a telescopic piece is disposed between each unconnected ends of the two drum brake sheets 41, and the telescopic piece is connected to the brake arm 42; the brake arm 42 is rotated to drive the expansion and contraction piece to rotate, so that the distance between the unconnected ends of the two drum brake pieces 41 is expanded or reduced; the second brake mechanism 4 comprises a third elastic pushing piece 43 for driving the brake arm 42 to rotate, and the third elastic pushing piece 43 keeps the distance between the unconnected ends of the two drum brake pieces 41 to be reduced; the second brake mechanism 4 is in a non-braking state in an initial state. In other words, when the first brake mechanism 37 fails to brake the main shaft 31 without moving, in order to avoid a falling accident caused by uncontrolled rotation of the rope winding shaft 2, the second brake mechanism 4 can directly brake the rope winding shaft 2, the control device 5 can shift the brake arm 42, so that the third elastic pushing piece 43 is pressed, and the expansion and contraction piece rotates to expand the two drum brake pieces 41, so that the braking on the inner circumferential wall of the rope winding shaft 2 is realized. The braking principle of the second braking mechanism 4 can refer to the existing drum braking structure, or refer to an electric lifter with chinese patent publication No. CN 211419422U.

In some specific embodiments, for the sake of convenience of operation and reducing the structural complexity of the new drive device 3, with reference to fig. 1, 12, 13, 14, 15 and 16, said first braking mechanism 37 and said second braking mechanism 4 are controlled by the same control device 5; the control device 5 is a rocker arm type control device 5; the rocker arm type control device 5 comprises a driven rotating rod 52 and a driving rocker arm 51 for realizing the rotation of the driven rotating rod 52, wherein a first poking piece 521 for poking the first poking rod 374 and a second poking piece 522 for poking the brake arm 42 are arranged on the driven rotating rod 52; when the driving rocker arm 51 is located at the initial position, neither the first pulling piece 521 nor the second pulling piece 522 triggers the first pulling rod 374 and the brake arm 42; when the driving rocker arm 51 rotates in the first direction a from the initial position, the first toggle piece 521 toggles the first toggle rod 374, and when the driving rocker arm 51 rotates in the second direction b from the initial position, the second toggle piece 522 toggles the brake arm 42; the first direction a and the second direction b are opposite.

In other words, in practical applications, when the driving rocker arm 51 is located at the initial position, the second braking mechanism 4 is in the non-braking state, the first braking mechanism 37 is in the braking state, and the braking force of the first braking mechanism 37 is maximum; when the driving rocker arm 51 is rotated in the first direction a at the initial position, the second brake mechanism 4 maintains the braking state, but the braking force of the first brake mechanism 37 to the spindle 31 is gradually reduced; when the driving rocker arm 51 rotates in the second direction b at the initial position, the first brake mechanism 37 keeps outputting the maximum braking force to the main shaft 31, and the braking force of the second brake mechanism 4 to the rope winding shaft 2 gradually increases.

In the above solution, in order to adapt to the operation habit of the operator, referring to fig. 14 and 16, an end portion of the driven rotating rod 52 is connected with an adapter 53, a cavity is arranged inside the driving rocker arm 51, one end of the adapter 53 is arranged inside the driving rocker arm 51, the end portion has an outer circumferential surface, and a plurality of first latches 531 spaced at regular intervals are arranged on the outer circumferential surface; a movable fixture block 54 is arranged inside the driving rocker arm 51, and a second fixture tooth 541 in snap fit with the first fixture tooth 531 is arranged on the fixture block 54; the second latch 541 is locked or separated with or from the first latch 531 by moving the latch 54. In this way, when the second latch 541 is latched with the first latch 531, the driving rocker arm 51 can rotate the driven rotating rod 52 through the adaptor 53; when the initial position needs to be adjusted, the second latch 541 and the first latch 531 may be separated, and then after the driving rocker arm 51 is rotated to a proper position, the second latch 541 is clamped into the first latch 531, so that the fixture block 54 and the adaptor 53 are effectively connected. Thereby meeting the operation habits of different operators.

Furthermore, in order to conveniently control the latch 54 to realize the locking or the separation of the second latch 541 and the first latch 531, referring to fig. 15, a pull rod 58 is disposed in the driving rocker arm 51, and one end of the pull rod 58 is connected to the latch 54; the other end of the pull rod 58 is connected with a lifting handle 59, the lifting handle 59 is hinged to the driving rocker arm 51, and a second elastic piece is arranged on the lifting handle 59 to enable the lifting handle 59 to reset; the pulling handle 59 is rotated around the hinged position of the pulling handle and the driving rocker arm 51, so that the pulling rod 58 is pulled up, and the fixture block 54 is separated from the adaptor 53. In this way, an operator holds the driving rocker arm 51 by hand, and when the initial position needs to be adjusted, the lifting handle 59 is held by fingers, so that the pull rod 58 is lifted, and the clamping block 54 is separated from the adaptor 53; the driving rocker arm 51 is rotated to a position suitable for operation habits in a state that the lifting handle 59 is kept gripped, then the lifting handle 59 is released, the second elastic piece enables the lifting handle 59 to reset, the pull rod 58 is reset, and the fixture block 54 is connected with the adapter 53 again. Wherein, the second elastic member may be a torsion spring provided at the hinge joint of the lifting handle 59 and the driving rocker arm 51.

In the above solution, in order to adapt to the statures of operators with different obesity degrees, referring to fig. 14, 15 and 16, the adaptor 53 is hinged to the driven rotating rod 52 through a rotating shaft 55, and the axis of the rotating shaft 55 is perpendicular to the axis of the driven rotating rod 52; a groove is formed in the end face, connected with the driven rotating rod 52, of the adaptor 53, a top block 56 is arranged in the groove, and a first elastic part 57 is arranged between the top block 56 and the bottom of the groove; the end of the driven rotating rod 52 enters the groove, and the rotating shaft 55 is arranged in the groove; the end face of the driven rotating rod 52 is an arc face, the first elastic piece 57 enables the top block 56 and the end face of the driven rotating rod 52 to form extrusion fit, and when the angle between the shaft core of the adapter 53 and the shaft core of the driven rotating rod 52 is increased, the compression amount of the first elastic piece 57 is increased. In other words, the driving rocker arm 51 is located on the side of the operator, and when the operator is relatively fat in size, the driving rocker arm 51 can be pushed outward to facilitate the operation thereof; the first elastic member 57 can push the top block 56, and the top block 56 presses the end surface of the driven rotating rod 52, so that the driving rocker arm 51 tends to lean inwards, and the driving rocker arm 51 is prevented from falling outwards without resetting, thereby affecting the operation of an operator. The terms "inside" and "outside" are relative to the operator. More specifically, the driven rotating rod 52 is rotatably disposed on the frame 1 or the mounting plate 11. Wherein the first elastic member 57 may be a spring.

In some specific embodiments, in order to fully utilize the rope winding space on the rope winding shaft 2, referring to fig. 3, 17 and 18, a rope control device 65 for adjusting and controlling the rope on the rope winding shaft 2 is arranged outside the rope winding shaft 2, the rope control device 65 comprises a rope arranger 61, the rope arranger 61 comprises a reciprocating screw rod 611 and a sliding table 612 which slides back and forth along the reciprocating screw rod 611, the reciprocating screw rod 611 is in transmission connection with the rope winding shaft 2, and is provided with two thread grooves 6111 with the same pitch and opposite rotation directions; a wedge-shaped surface is formed at the transition position between the two ends of the thread groove 6111 and the reciprocating screw rod 611 body, a shifting block 6121 is arranged in the sliding table 612, and the shifting block 6121 is connected with one thread groove 6111 of the reciprocating screw rod 611 to realize the reciprocating motion of the sliding table 612 on the reciprocating screw rod 611; the sliding table 612 is provided with a rope guide mechanism 613, the rope guide mechanism 613 comprises a rope guide frame 6131 and two first guide wheels 6132 arranged on the rope guide frame 6131 to clamp a rope, the two first guide wheels 6132 are arranged along the axial direction of the rope winding shaft 2, the outer circumferential surfaces of the two first guide wheels 6132 are arranged oppositely, and the rope is clamped between the outer circumferential surfaces of the two first guide wheels 6132; the outer circumferential surface of the first guide wheel 6132 is concave, and a channel capable of clamping the rope is formed between the two first guide wheels 6132.

Specifically, the shifting block 6121 moves along one of the thread grooves 6111 on the reciprocating screw rod 611, and when the shifting block 6121 moves to the end of the thread groove 6111, the shifting block 6121 jumps to the other thread groove 6111 through the wedge surface to move in the opposite direction, so that the reciprocating movement of the sliding table 612 is realized in a circulating manner; the sliding table 612 is connected with a positioning groove or a positioning rod arranged on the bracket or the mounting plate 11 to prevent the sliding table 612 from rotating; the reciprocating screw rod 611 is in transmission connection with the rope winding shaft 2, the rope is arranged on the rope guide mechanism 613 on the sliding table 612, and when the rope winding shaft 2 rotates, the sliding table 612 slides back and forth to realize automatic rope arrangement of the rope winding shaft 2 in the lifting process. Wherein, because the rope can the horizontal hunting at the rope arranging in-process to receive the friction easily, consequently through two first guide pulleys 6132 centre gripping ropes, two first guide pulleys 6132 rotationally set up in lead on the rope frame 6131, effectively reduce the friction that the rope received, avoid the rope fracture and take place accident.

Furthermore, the rope does not swing left and right in the rope arranging process, and in order to reduce the friction on the rope, referring to fig. 17 and 18, a guide rod 6133 is arranged on the sliding table 612, and the axis of the guide rod 6133 is perpendicular to the axis of the rope winding shaft 2; the rope guide frame 6131 is slidably arranged on the guide rod 6133. Therefore, the rope has a certain range of swing space in the axial direction of the guide rod 6133, and friction on the rope is reduced.

In addition, in order to avoid the falling accident caused by the broken rope, a plurality of ropes are adopted on the rope winding shaft 2 of the novel driver, the rope winding shaft 2 is divided into sections with equal length through a plurality of partition plates 21, and each section is wound with one rope; the sliding table 612 of the rope arranger 61 is provided with rope guide mechanisms 613 which are the same in number as the ropes and are arranged at equal intervals. In this embodiment, three ropes are used. Therefore, even if one rope is broken, the safety lifting of the lifting object can be ensured.

In some specific embodiments, when the rope is not pulled by the lifter and needs to be paid out, in order to avoid the rope from being wound into a lump in the housing 12, referring to fig. 19, 20 and 21, the rope control device 65 further comprises a rope tightener 62, wherein the rope tightener 62 comprises a driving shaft 621 and a driven shaft 622, a driving pulley 6211 is arranged on the driving shaft 621, a driven pulley 6221 is arranged on the driven shaft 622, and the driving pulley 6211 and the driven pulley 6221 are respectively arranged on two sides of the rope to clamp the rope; the driving shaft 621 is in transmission connection with a motor 623; a buffer spring is connected to the driving shaft 621 or/and the driven shaft 622, and urges the driving pulley 6211 or the driven pulley 6221 to press the rope. In other words, when the rope is not pulled by the lifter, the rope may be accumulated in the housing 12 and cannot be discharged, the driving pulley 6211 and the driven pulley 6221 clamp the rope under the urging of the buffer spring, and the driving pulley 6211 drives the rope to be discharged under the driving of the motor 623. As a matter of course, the driving pulleys 6211 and the driven pulleys 6221 of the rope tensioner 62 are the same in number as the ropes. In addition, when the rope is pulled by the lifter, the buffer spring is compressed, the driving pulley 6211 and the driven pulley 6221 are separated, and the rope is not driven by the rope tensioner 62.

Referring to fig. 20, there are a plurality of driving shafts 621 and driven shafts 622, the driving shafts 621 correspond to the driven shafts 622 one by one, the driving shafts 621 and the motors 623 are fastened by a gear ring to form a serial transmission path L, and the driving shaft 621 closest to the motors 623 is connected to the serial transmission path L by the buffer spring; the rope disengages the gear on the corresponding driveshaft 621 from the series drive path L by compressing the damper spring. So, when the rope receives the lifter to drag, buffer spring can receive the extrusion, the gear on the extruded driving shaft 621 of rope breaks away from polyphone transmission route L, motor 623 has not driven the driving shaft 621 rotates, the rope can not receive euphroe 62 drives.

In the above embodiment, when the rope fastening device 62 is not matched with the rope winding shaft 2 in the rope driving speed, the rope may slip on the driving pulley 6211 and the driven pulley 6221, so that the rope may be worn and easily broken. Referring to fig. 21, a safety type output mechanism 624 is connected to the motor 623, and the safety type output mechanism 624 includes a friction fixing ring 6241 having a ring gear, a planet carrier B6243, a planet wheel B6244 provided on the planet carrier B6243, and a sun wheel B6231 connected to the motor 623; the sun gear B6231, the planet gear B6244 and the friction fixing ring 6241 form a planetary gear train structure; a gear positioned at the head of the serial transmission path L is arranged on the planet carrier B6243; an adjustable braking mechanism which provides specified braking force for the friction fixing ring 6241 is arranged outside the friction fixing ring 6241; the friction fixing ring 6241 is provided with a wing edge 6242, the adjustable braking mechanism comprises two friction plates 6245 respectively clamped on two sides of the wing edge 6242, and the braking force on the friction fixing ring 6241 is adjusted by controlling the distance between the two friction plates 6245. Specifically, under normal conditions, the friction force of the friction plate 6245 to the friction fixing ring 6241 is greater than the friction force of the rope on the driving pulley 6211 and the driven pulley 6221, and the motor 623 can drive the planet wheel B6244 to rotate, so as to drive the driving shaft 621 on the series transmission path L to rotate; when the speed difference of the rope driving between the rope tightener 62 and the rope winding shaft 2 occurs, the friction force of the rope on the driving pulley 6211 and the driven pulley 6221 is larger than the friction force of the friction plate 6245 to the friction fixing ring 6241, namely the rotation resistance of the planet wheel B6244 is larger than the rotation resistance of the friction fixing ring 6241, the friction fixing ring 6241 rotates, and the planet wheel B6244 is fixed, so that the rope abrasion is avoided by matching with the rotation speed of the rope winding shaft 2.

In the above solution, in order to further avoid the rope from being worn, a rope positioning frame is disposed between the rope guider 61 and the rope tightener 62, at least two second guide wheels are disposed on the rope positioning frame, the second guide wheels are arranged along the axial direction of the rope winding shaft 2, the outer circumferential surfaces of the two adjacent second guide wheels are disposed opposite to each other, and the rope is clamped between the outer circumferential surfaces of the two second guide wheels; the outer circumferential surface of the second guide wheel is concave, and a channel capable of clamping the rope is formed between the two second guide wheels; the channel formed between every two second guide wheels vertically corresponds to the driving pulley 6211 and the driven pulley 6221 of a pair of clamping ropes. In this way, the transition of the rope from the rope arranger 61 to the rope tensioner 62 is facilitated.

In addition, for convenience of installing the components such as the driving shaft 621 and the driven shaft 622, referring to fig. 20, both ends of the driving shaft 621 and the driven shaft 622 are respectively installed on two fixing plates; the gear on the serial transmission path L is arranged in the fixed plate; a sliding groove is formed in the fixing plate, and when the buffer spring is extruded, the driving shaft 621 or the driven shaft 622 corresponding to the buffer spring slides along the sliding groove. The fixing plate may be mounted on the bracket or the mounting plate 11.

In some embodiments, in order to protect the housing 12, the housing 12 is provided with a roller 121, so that when the motorized lift is used to lift, the roller 121 can roll along the outer wall of the building to avoid damaging the housing 12.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. A rope control device is characterized in that the rope control device is used for adjusting and controlling a rope on a rope winding shaft and comprises a rope arranger, wherein the rope arranger comprises a reciprocating screw rod and a sliding table which slides along the reciprocating screw rod in a reciprocating manner, the reciprocating screw rod is in transmission connection with the rope winding shaft and is provided with two thread grooves with the same thread pitch and opposite rotation directions; a wedge-shaped surface is formed at the transition position of the two ends of the thread groove and the reciprocating screw rod body, a shifting block is arranged in the sliding table, and the shifting block is connected with one thread groove of the reciprocating screw rod to realize the reciprocating motion of the sliding table on the reciprocating screw rod; the rope guide mechanism is arranged on the sliding table and comprises a rope guide frame and two first guide wheels arranged on the rope guide frame in a rope clamping mode, the two first guide wheels are arranged along the axial direction of the rope winding shaft and are arranged in a two-way mode, the outer circumferential surfaces of the first guide wheels are arranged oppositely, and the rope is clamped between the outer circumferential surfaces of the two first guide wheels.

2. The rope control device of claim 1, wherein the outer circumferential surface of the first guide wheels is concave, and a channel capable of clamping the rope is formed between the two first guide wheels.

3. The rope control device of claim 2, wherein a guide rod is arranged on the sliding table, and an axis of the guide rod is perpendicular to an axis of the rope winding shaft; the rope guide frame is slidably arranged on the guide rod.

4. A rope control apparatus as claimed in any one of claims 1 to 3, wherein a plurality of ropes are provided on the rope winding shaft, and the sliding table of the rope arranger is provided with the same number of rope guides arranged at equal intervals.

5. The rope control device of claim 1, further comprising a rope tensioner, said rope tensioner comprising a driving shaft and a driven shaft, said driving shaft having a driving pulley and said driven shaft having a driven pulley, said driving pulley and said driven pulley being respectively located on opposite sides of said rope for gripping the rope; the driving shaft is in transmission connection with the motor; and a buffer spring is connected to the driving shaft or/and the driven shaft and urges the driving pulley or the driven pulley to press the rope.

6. The rope control device according to claim 5, wherein there are a plurality of the driving shafts and the driven shafts, and the driving shafts and the driven shafts correspond to each other one by one, and the plurality of the driving shafts and the motor are looped together through a gear ring to form a serial transmission path, and the driving shaft closest to the motor is connected to the buffer spring in the serial transmission path; the rope is used for enabling the gear on the corresponding driving shaft to be separated from the serial transmission path by pressing the buffer spring.

7. The rope control device according to claim 6, wherein a safety output mechanism is connected to the motor, and the safety output mechanism comprises a friction fixed ring with an inner gear ring, a planet carrier B, a planet gear B arranged on the planet carrier B, and a sun gear B connected to the motor; the sun gear B, the planet gear B and the friction fixing ring form a planetary gear train structure; a gear positioned at the head of the serial transmission path is arranged on the planet carrier B; and an adjustable braking mechanism for providing a specified braking force for the friction fixing ring is arranged outside the friction fixing ring.

8. The rope control device according to claim 7, wherein the friction fixing ring is provided with a wing edge, the adjustable braking mechanism comprises two friction plates respectively clamped on two sides of the wing edge, and the braking force on the friction fixing ring is adjusted by controlling the distance between the two friction plates.

9. The rope control device of claim 8, comprising two fixed plates, wherein two ends of the driving shaft and the driven shaft are respectively arranged on the two fixed plates; the gears on the serial transmission path are arranged in the fixed plate; a sliding groove is formed in the fixing plate, and when the buffer spring is extruded, the driving shaft or the driven shaft corresponding to the buffer spring slides along the sliding groove.

10. A rope control apparatus as claimed in any one of claims 5 to 9, wherein a rope positioning bracket is provided between the rope arranger and the rope tightener, the rope positioning bracket being provided with at least two second guide wheels which are arranged along the axial direction of the rope winding shaft and are disposed opposite to each other on outer circumferential surfaces of adjacent two of the second guide wheels, the rope being held between the outer circumferential surfaces of the two second guide wheels; the outer circumferential surface of the second guide wheel is concave, and a channel capable of clamping the rope is formed between the two second guide wheels; and a channel formed between every two second guide wheels vertically corresponds to the driving pulley and the driven pulley of a pair of clamping ropes.