CN115432536A - High-stability type linkage control elevator speed limiter - Google Patents

Abstract

The invention relates to a high-stability linkage-controlled elevator speed limiter, wherein a centrifugal mechanism contacts and presses a brake disc in an elevator stalling state, a linkage plate fixedly connected with the brake disc in the elevator speed limiter drives a linkage rod to lift and further drive a hook plate to unhook, the linkage rod is triggered simultaneously when the elevator speed limiter triggers the action state to drive the hook plate to act and switch the working state of a rope clamping device to a clamping steel wire rope, the brake disc comprises a brake drum concentric with a main shaft, a friction plate and a disc spring are arranged in the brake drum, a pull rod pin is welded on the outer side surface of the brake drum, one end, close to the outer side, of the pull rod pin is fixedly connected with the linkage plate, a limiting plate is covered on the outer side surface of the brake drum, and a copper plate and a retaining ring are sequentially arranged between the brake drum and the limiting plate from inside to outside. This application is small, is convenient for arrange, and it is higher to do stability and security, and wherein the convenience that resets of pressing from both sides rope ware, and tension is adjustable, can satisfy different operating mode demands.

Description

High-stability type linkage control elevator speed limiter

Technical Field

The invention relates to an elevator safety component, in particular to the field of elevator speed limiters, and particularly relates to a high-stability type linkage-controlled elevator speed limiter.

Background

The elevator is widely applied to people's daily life, prevents that the elevator overspeed from bringing the injury for people in order to ensure people's safety, adopts the elevator overspeed governor as the safety part of monitoring the elevator overspeed in the elevator. When the elevator has an overspeed operation fault or the elevator linkage function is tested, the speed limiter finishes triggering, and meanwhile, in order to be acted on a car, a counterweight, a steel wire rope system or a traction sheave, the safety braking device of the rope clamp is also provided, but the existing rope clamp has a complex structure and a large volume, needs to be independently arranged and is inconvenient to set.

Disclosure of Invention

The invention aims to provide a high-stability linkage-controlled elevator speed limiter which is simple in overall structure, small in size, convenient to arrange, suitable for action linkage during braking of the speed limiter and high in working stability and safety.

In order to achieve the purpose, the invention adopts the technical scheme that:

the invention provides a high-stability linkage-controlled elevator speed limiter, which comprises a speed limiter support plate, a rope pulley fixed on the speed limiter support plate through a main shaft, a brake disc coaxially arranged with the main shaft, a switch beating plate rotatably arranged at the position of the speed limiter support plate, a switch mechanism linked with the switch beating plate, and a centrifugal mechanism arranged on the rope pulley and moving along with the rope pulley, wherein the centrifugal mechanism contacts and presses the brake disc in the stalling state of an elevator, the elevator speed limiter further comprises a linkage plate, a linkage rod, a hook plate and a rope clamping device, the linkage plate is fixedly connected with the brake disc, the linkage rod is connected with the linkage plate, a steel wire rope of the elevator passes through the rope clamping device, the movable chuck of rope clamping ware is connected to the one end of hook plate, the other end with the trace links to each other, the trace is triggered simultaneously when elevator overspeed governor triggers the action state, drives the hook plate action, switches the operating condition to the centre gripping of rope clamping ware wire rope, wherein, the brake disc includes brake drum and the brake cover that sets up with the main shaft is concentric, and the brake drum lid closes the brake cover surface, the inside chamber of settling that has of brake cover the intracavity is provided with friction disc and dish spring settling, the outside skin weld of brake drum has the pull rod round pin, the outer one end fixed connection that leans on of pull rod round pin the trace, the outside upper cover of brake drum is equipped with the limiting plate from interior to exterior has set gradually copper and retaining ring between brake drum and the limiting plate.

The technical scheme is as follows. The applicant has further optimisation measures.

Optionally, a position of the limiting plate corresponding to the pull rod pin is provided with a limiting hole for limiting a rotation range of the pull rod pin.

Furthermore, the limiting hole is an arc-shaped hole, and the radian is 8 to 15 degrees.

Optionally, the inner side surface of the copper plate is in contact with the end surfaces of the brake sleeve and the brake drum, and the outer side surface of the copper plate is in contact with the inner side surface of the retainer ring.

Optionally, the rope clamping device includes a fixed seat, a fixed chuck, a movable chuck and a pressure spring, the fixed seat is fixedly connected to the speed governor support plate, the fixed chuck is locked and fixed in the fixed seat, the movable chuck is slidably disposed in the fixed seat, the steel wire rope passes through the space between the fixed chuck and the movable chuck, one side of the movable chuck faces the fixed chuck, the pressure spring is disposed between the opposite side and the fixed seat, and the pressure spring is used for pushing the movable chuck towards the direction of the fixed chuck.

Furthermore, a waist-shaped hole is formed in the fixed seat, the side face of the movable chuck is fixed in the waist-shaped hole through a pin, the pin is in sliding fit with the waist-shaped hole, and the movable chuck can translate along the waist-shaped hole.

Furthermore, a guide rod is further arranged in the fixing seat, the guide rod is arranged between the other side of the movable chuck and the right side plate of the fixing seat, a guide sleeve is arranged on the right side plate, one end of the guide rod is fixedly connected with the other side of the movable chuck, and the other end of the guide rod penetrates out of the guide sleeve and is in sliding fit with the guide sleeve.

Optionally, the hook plate sets up in the outside of fixing base set up the direction logical groove on the preceding curb plate of fixing base or the posterior lateral plate, the one end of hook plate passes through the connecting pin the direction logical groove fixed connection the activity chuck, the other end of hook plate with the trace links to each other, the outside of fixing base is provided with spacing post, spacing post sets up in the homonymy with the hook plate, the lower edge of hook plate is provided with the spacing groove, but spacing joint of spacing groove spacing post.

Furthermore, the limiting groove of the lower edge of the hook plate is U-shaped.

Optionally, a U-shaped plate is vertically fixed on the inner side of the speed governor support plate, positioning holes are formed in the upper arm and the lower arm of the U-shaped plate, and the lower end of the linkage rod passes through the two positioning holes in the U-shaped plate and then is connected with the other end of the hook plate.

Optionally, a bayonet pin is fixedly connected to the bottom of the linkage rod, a limiting plate is arranged above the bayonet pin on the linkage rod, the U-shaped notch at the other end of the hook plate is clamped at a position, between the bayonet pin and the limiting plate, of the linkage rod, a reset spring is arranged between the limiting plate and the outer side surface of the lower arm of the U-shaped plate, and the reset spring is sleeved on the linkage rod.

Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:

the high-stability linkage-controlled elevator speed limiter disclosed by the invention has the advantages that the action of the rope clamp is triggered through the linkage rod which forms linkage relation with the speed limiter brake disc, the adopted novel rope clamp structure is different from the conventional rope clamp structure, the overall structure is simple, the size is small, the arrangement in a limited space is convenient, and the structure which is directly linked with the brake disc ensures that the overall work is stable and reliable, the failure rate is lower than that of the conventional elevator speed limiter, particularly, a copper plate and a check ring are clamped between a brake drum and a linkage plate, the copper plate has a self-lubricating effect while external pollutants are prevented from entering the interior of the brake disc, the direct contact abrasion between the linkage plate and a brake sleeve can be avoided, the abrasion is reduced, and the working stability of equipment is improved.

Drawings

Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic diagram of the overall structure of a high-stability linkage-controlled elevator speed limiter in a packaging state according to one embodiment of the invention;

fig. 2 is a schematic structural view of a high-stability type linkage-controlled elevator speed limiter according to an embodiment of the invention in a state that a part of a speed limiter support plate is removed, so as to show an internal main body structure;

fig. 3 is a partially enlarged view of the high-stability type interlocking controlled elevator governor shown in fig. 2;

fig. 4 is a schematic front view structure diagram of the elevator speed limiter of the high stability type linkage control shown in fig. 2;

fig. 5 isbase:Sub>A schematic sectional view of thebase:Sub>A-base:Sub>A direction of the elevator governor in the steady-state type interlock control shown in fig. 4;

fig. 6 is an axial side view of a B-B direction cross section of the high stability type interlock controlled elevator governor shown in fig. 4;

fig. 7 is a partially enlarged view of the high stability type interlock controlled elevator governor shown in fig. 6;

fig. 8 is a schematic structural view of a rope clamp in a high-stability type linkage-controlled elevator speed governor according to an embodiment of the present invention in a non-rope-clamping state.

Wherein the reference numerals are as follows:

1. a speed governor support plate 11, a rope pulley 12, a steel wire rope 13, a brake disc 14, a switch beating plate 15, a main brake switch mechanism 16, a safety gear brake switch mechanism 17, a centrifugal mechanism 18 and a main shaft;

2. a linkage sheet;

3. the connecting rod 31, the U-shaped plate 32, the blocking piece 33, the clamping pin 34, the limiting piece 35 and the sliding piece;

41. a contact switch 42, a connecting frame 43 and a guide wheel;

5. the hook plate 51, the limiting groove 52 and the U-shaped notch;

6. the rope clamping device comprises a rope clamping device 61, a fixed seat 62, a fixed chuck 63, a movable chuck 64, a waist-shaped hole 65, a pin column 66, a guide rod 67, a guide through groove 68, a limiting column 69 and a threaded hole at the position of the movable chuck;

71. the positioning device comprises a placing frame, 72, a reset rod, 73, a positioning plate, 74 and a positioning hole;

81. the brake drum comprises a brake drum 82, a friction plate 83, a disc spring 84, a pull rod pin 85, a limiting plate 86, a copper plate 87, a retainer ring 88, a limiting hole 89 and a brake sleeve.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of 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. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

The embodiment provides a high-stability linkage-controlled elevator speed limiter, as shown in fig. 1 to 8, the elevator speed limiter includes a speed limiter support plate 1, a rope pulley 11 fixed on the speed limiter support plate 1 through a main shaft 18, a brake disc 13 coaxially arranged with the main shaft 18, a switch beating plate 14 rotatably arranged at the speed limiter support plate 1, a switch mechanism linked with the switch beating plate 14, a centrifugal mechanism 17 arranged on the rope pulley 11 and moving along with the rope pulley 11, the centrifugal mechanism 17 contacting and pressing the brake disc 13 in an elevator stalling state, and further includes a linkage plate 2, a linkage rod 3, a hook plate 5 and a rope clamp 6, the linkage plate 2 is fixedly connected with the brake disc 13, the linkage rod 3 is connected with the linkage plate 2, an end of the linkage plate 2 can be connected with the linkage rod 3 in a form of a U-shaped fork hook, a limit clamping groove and the like, the linkage plate 2 can vertically lift the linkage rod 3, but lateral movement is eliminated, so as to limit the connection mode capable of realizing the function.

The steel wire rope 12 of the elevator penetrates through the rope clamping device 6, one end of the hook plate 5 is connected with the movable chuck 63 of the rope clamping device 6, the other end of the hook plate is connected with the linkage rod 3, the linkage rod 3 is triggered at the same time when the elevator speed limiter triggers the action state, the hook plate 5 is driven to act, and the working state of the rope clamping device 6 is switched to clamp the steel wire rope 12.

For example, when an elevator stalls, the centrifugal mechanism 17 acts to start braking operation of the brake disc 13, the brake disc 13 rotates, so that the linkage plate 2 rotates to drive the linkage rod 3 to lift upwards, so that the hook plate 5 is lifted upwards, the movable chuck 63 can be released instantly after the hook plate 5 is unhooked from a component which limits the position of the hook plate 5, and the pressure spring pushes the movable chuck 63 under the elastic force of the pressure spring, so that the movable chuck 63 moves towards the fixed chuck 62 and keeps a clamping state, and the steel wire rope 12 is clamped between the movable chuck 63 and the fixed chuck 62.

A U-shaped plate 31 is vertically fixed on the inner side of the speed governor support plate 1, positioning holes are formed in the upper arm and the lower arm of the U-shaped plate 31, the lower end of the linkage rod 3 penetrates through the two positioning holes in the U-shaped plate 31 and then is connected with the other end of the hook plate 5, a blocking piece 32 is fixed on the position, located between the upper arm and the lower arm of the U-shaped plate 31, of the linkage rod 3, a buffer spring is arranged between the blocking piece 32 and the lower arm of the U-shaped plate 31, and the buffer spring is sleeved on the linkage rod 3.

The rope clamping device 6 comprises a fixed seat 61, a fixed chuck 62, a movable chuck 63 and a pressure spring, the fixed seat 61 is fixedly connected with the speed governor support plate 1, the fixed chuck 62 is locked and fixed in the fixed seat 61, the movable chuck 63 is slidably arranged in the fixed seat 61, the steel wire rope 12 passes through the fixed chuck 62 and the movable chuck 63, one side of the movable chuck 63 faces the fixed chuck 62, the pressure spring is arranged between the opposite side and the fixed seat 61, and the pressure spring is used for pushing the movable chuck 63 towards the direction of the fixed chuck 62.

The fixed seat 61 is provided with a waist-shaped hole 64, in order to ensure the stable motion of the movable chuck 63, the two side plates located in the front and at the back of the fixed seat 61 are provided with waist-shaped holes 64, each side plate is provided with an upper waist-shaped hole 64 and a lower waist-shaped hole 64 which are parallel, the front side surface and the back side surface of the movable chuck 63 are respectively fixed in the waist-shaped holes 64 through two pins 65, each pin 65 is in sliding fit with the corresponding waist-shaped hole 64, and the movable chuck 63 can move horizontally along the waist-shaped holes 64. Still be provided with guide bar 66 in the fixing base 61, guide bar 66 set up in the opposite side of activity chuck 63 with between the right side board of fixing base 61, be provided with the uide bushing on the right side board, the one end of guide bar 66 with the opposite side fixed connection of activity chuck 63, the other end is worn out the uide bushing and with uide bushing sliding fit, the compression spring cup joint be in on the guide bar 66 and be located the activity chuck 63 with between the right side board of fixing base 61.

The hook plate 5 is arranged on the outer side of the fixing seat 61, a guide through groove 67 is formed in a front side plate or a rear side plate of the fixing seat 61, one end of the hook plate 5 penetrates through the guide through groove 67 to be fixedly connected with the movable chuck 63 through a connecting pin, the other end of the hook plate 5 is connected with the linkage rod 3, a limiting column 68 is arranged on the outer side of the fixing seat 61, the limiting column 68 and the hook plate 5 are arranged on the same side, a limiting groove 51 is formed in the lower edge of the hook plate 5, and the limiting groove 51 can be in limiting clamping connection with the limiting column 68. The outside of spacing post 68 still is provided with the backplate, and the backplate passes through the bolt-up on fixing base 61.

Specifically, the limiting groove 51 of the lower edge of the hook plate 5 is U-shaped, and the lower edges of the main body of the hook plate 5 located at the left and right sides of the limiting groove 51 have a height difference, wherein the lower edge of the left side of the hook plate 5 is lower than the lower edge of the right side of the hook plate 5.

In order to be convenient for the hook plate 5 to accurately fall back when resetting, so that the limiting groove 51 is accurately clamped on the limiting column 68, the right side of the limiting groove 51 at the hook plate 5 is in smooth arc transition, and the left side is a vertical wall.

A threaded hole 69 is formed in the side face of the other side of the movable chuck 63, a through hole is correspondingly formed in the right side plate of the fixed seat 61 at the same height level as the threaded hole 69, a placing frame 71 is vertically fixed on the outer side of the speed governor support plate 1, a reset rod 72 is inserted into the placing frame 71, and an external thread matched with the threaded hole 69 in the movable chuck 63 is formed in the end portion of the reset rod 72. When resetting, can directly insert the release link 72 by the through-hole on the fixing base 61 right side board then the screw in activity chuck 63, be similar to the transmission relation of lead screw and transmission pair, can pull out activity chuck 63, keep away from wire rope 12, just can transfer hook plate 5 smoothly after the trace 3 falls back to make hook plate 5 fall back and reset. In addition, the tension of the pressure spring can be adjusted in the equipment debugging stage according to the adjustment.

In order to facilitate the introduction of the reset rod 72 into the speed governor for operation, a positioning plate 73 is arranged on the outer side of the speed governor support plate 1 positioned on the side surface, namely the outer side of the speed governor support plate 1 close to the outer side end of the hook plate 5, positioning holes 74 are formed in the positioning plate 73 corresponding to the through holes in the right side plate of the fixed seat 61 and the threaded holes 69 in the movable collet 63, the three holes are positioned at the same horizontal height, the reset rod 72 is introduced from the positioning holes 74 and then passes through the through holes in the right side plate of the fixed seat 61, and the reset rod 72 can be accurately introduced into the threaded holes 69 in the movable collet 63 according to the principle of two points and one line, so that operation can be performed.

The end part of the other end of the hook plate 5 is a U-shaped notch 52, the other end of the hook plate 5 is clamped in the linkage rod 3, and the lower part of the hook plate 5 is abutted against the upper part of the clamping pin 33, so that the other end of the hook plate 5 can be accurately clamped to the linkage rod 3, and meanwhile, when the linkage rod 3 is pulled up, the linkage rod 3 can be prevented from being pulled up unsmoothly.

The bottom of the linkage rod 3 is fixedly connected with a bayonet pin 33, a limiting plate 34 is arranged on the linkage rod 3 above the bayonet pin 33, a U-shaped notch 52 at the other end of the hook plate 5 is clamped on the linkage rod 3 between the bayonet pin 33 and the limiting plate 34, a reset spring is arranged between the limiting plate 34 and the outer side surface of the lower arm of the U-shaped plate 31, and the reset spring is sleeved on the linkage rod 3.

Generally speaking, the switching mechanism includes main brake switching mechanism 15 that controls the hauler stall and the safety tongs braking switching mechanism 16 that controls the safety tongs to brake, and safety tongs braking switching mechanism 16 sets up in the outside of overspeed governor mounting panel 1 and sets up the bottom position that highly is located trace 3, sets up the logical groove that is on a parallel with trace 3 on overspeed governor mounting panel 1, it is provided with slide 35 to lead to the inslot, the inboard of slide 35 with trace 3 fixed connection, the outside stretches out overspeed governor mounting panel 1 and butt safety tongs braking switching mechanism 16's movable end.

The safety gear brake switch mechanism 16 comprises a contact switch 41, a connecting frame 42 and a guide wheel 43, wherein the connecting frame 42 is arranged outside a contact of the contact switch 41 through a rotating pin, the guide wheel 43 is rotatably fixed at the end part of the connecting frame 42 through a rotating shaft, and the lower part of the guide wheel 43 is abutted against the upper part of the sliding sheet 35.

In addition, brake disc 13 includes brake drum 81 and the brake sleeve 89 with the concentric setting of main shaft 18, and brake sleeve 89 and brake drum 81 butt joint lock are fixed, and brake drum 81 lid closes brake sleeve 89 surface to at both inside arrangement chamber that forms be provided with friction disc 82 and dish spring 83 in the arrangement chamber, dish spring 83 pushes away friction disc 82 and makes the friction disc hug closely brake sleeve 89, brake drum 81's outside skin weld has pull rod pin 84, pull rod pin 84 lean on outer one end fixed connection interlock piece 2, brake drum 81's outside upper cover in surface is equipped with limiting plate 85 from inside to outside has set gradually copper 86 and retaining ring 87 between brake drum 81 and the limiting plate 85. The inside surface of copper 86 with the tip surface contact of brake sleeve 89 and brake drum 81, the outside surface of copper 86 with retaining ring 87's medial surface contacts, retaining ring 87 sets up between the medial surface of copper 86 and trace 2, can keep off the protection with trace 2.

The centrifugal mechanism 17 adopts a single-throw piece or double-throw piece structure, and the structure of the centrifugal mechanism 17 in this part is the existing structure, which is not the protection focus of the application, and is not described and expanded again. When the elevator stalls, the rope pulley 11 rotates at a high speed to generate a large centrifugal force, so that the throw plate of the centrifugal mechanism 17 is thrown out, the throw plate can contact with a striking plate of the main brake switch mechanism 15 after being thrown out, the main brake switch mechanism 15 is triggered to work, meanwhile, the throw plate drives the contact wheel connected with the throw plate to move towards the brake disc 13, and after the contact wheel is sleeved with the brake disc 13, because the centrifugal mechanism 17 is arranged on the rope pulley 11 and moves along with the rope pulley 11, the rope pulley 11 rotating at a high speed can drive the brake sleeve 89 to rotate together, the disc spring 83 and the friction plate 82 are arranged in a mounting cavity formed between the brake drum 81 and the brake sleeve 89 and are kept in a tension state, the brake sleeve 89 can drive the brake drum 81 to rotate together after initial rotation, so that the linkage plate 2 rotates to drive the linkage rod 3 to be lifted upwards, so that the hook plate 5 is lifted upwards, but the brake drum 81 can subsequently limit the rotation amplitude thereof under the action of the limiting plate 85, and only the rotation sleeve 89 keeps rotating and rubs and brakes along with the friction and the friction plate 82 in the stalling control process. That is, the elevator stalling initial centrifugal mechanism 17 triggers the brake disk 13 to act, the brake drum 81 of the brake sleeve 13 rotates together with the brake sleeve 89, then the brake drum 81 stops rotating under the limitation of the limit plate 85, only the brake disk 89 continues to rotate, and friction braking is realized during the contact with the friction plate 82.

The limit plate 85 is fixedly connected with the outer bearing sleeve of the main shaft 18, namely the limit plate 85 is kept in a fixed state and is not moved in the working process of the elevator and the elevator speed limiter. The position of the limiting plate 85 corresponding to the pull rod pin 84 is provided with a limiting hole 88 for limiting the rotation range of the pull rod pin 84, so as to limit the rotation amplitude of the brake drum 81, and avoid the fault caused by the excessive rotation of the linkage plate 2 and the linkage rod 3. Specifically, the limiting hole 88 is an arc-shaped hole, and the radian is 8 to 15 degrees.

To sum up, the high stable type interlock control's elevator overspeed governor of this application, it realizes triggering to the action of rope clamping device through the trace that constitutes the interlock relation with the overspeed governor brake disc, the neotype rope clamping device structure of adoption, be different from conventional rope clamping device structure, overall structure is simple, small, be convenient for arrange in limited space, and directly carry out the structure of interlock with the brake disc, make whole job stabilization, reliability, can gain the fault rate less than conventional elevator overspeed governor, especially press from both sides copper and the retaining ring of establishing between brake drum and interlock piece, can be when preventing that external pollutant from entering into the brake disc is inside, reduce the direct contact wearing and tearing between interlock piece and the brake drum, improve equipment job stabilization nature.

The above embodiments are merely illustrative of the technical concept and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the content of the present invention and implement the invention, and not to limit the scope of the invention, and all equivalent changes or modifications made according to the spirit of the present invention should be covered by the scope of the present invention.

Claims (10)

1. The elevator speed limiter is characterized by further comprising a linkage plate, a linkage rod, a hook plate and a rope clamping device, wherein the linkage plate is fixedly connected with the brake disc, the linkage rod is connected with the linkage plate, a steel wire rope of an elevator passes through the rope clamping device, one end of the hook plate is connected with a movable chuck of the rope clamping device, the other end of the hook plate is connected with the linkage rod, the linkage rod is simultaneously triggered when the elevator speed limiter triggers the action state to drive the hook plate to act and switch the working state of the rope clamping device to clamp the steel wire rope, the brake disc comprises a brake drum and a brake sleeve which are concentrically arranged with the main shaft, the brake drum covers the surface of the brake sleeve, a check ring is arranged in the brake sleeve, a copper plate is arranged in the brake sleeve, a limit plate is welded on the outer side of the brake drum, and a stop ring is arranged on the outer side of the brake drum, and a stop ring is welded on the outer side of the brake drum.

2. The elevator speed limiter with high stability and linkage control according to claim 1, wherein a limiting hole is formed in the limiting plate at a position corresponding to the pull rod pin, and the limiting hole is used for limiting the rotation range of the pull rod pin.

3. The elevator speed limiter with the high stability type linkage control according to claim 1, wherein the limiting hole is an arc-shaped hole, and the radian is 8-15 degrees.

4. The elevator speed governor according to claim 1, wherein an inner surface of the copper plate is in contact with end surfaces of the brake drum and the brake sleeve, and an outer surface of the copper plate is in contact with an inner surface of the retainer ring.

5. The high-stability linkage-controlled elevator speed limiter according to claim 1, wherein the rope clamping device comprises a fixed seat, a fixed chuck, a movable chuck and a pressure spring, the fixed seat is fixedly connected with the speed limiter support plate, the fixed chuck is locked and fixed in the fixed seat, the movable chuck is slidably arranged in the fixed seat, the steel wire rope passes through the space between the fixed chuck and the movable chuck, one side of the movable chuck faces the fixed chuck, the pressure spring is arranged between the opposite side of the movable chuck and the fixed seat, and the pressure spring is used for pushing the movable chuck towards the direction of the fixed chuck.

6. The elevator speed limiter with the high stability type linkage control according to claim 5, wherein a kidney-shaped hole is formed in the fixed seat, the side face of the movable chuck is fixed in the kidney-shaped hole through a pin, the pin is in sliding fit with the kidney-shaped hole, and the movable chuck can move in a translation mode along the kidney-shaped hole.

7. The elevator speed limiter with the high stability type linkage control according to claim 5, wherein a guide rod is further arranged in the fixed seat, the guide rod is arranged between the other side of the movable chuck and a right side plate of the fixed seat, a guide sleeve is arranged on the right side plate, one end of the guide rod is fixedly connected with the other side of the movable chuck, and the other end of the guide rod penetrates through the guide sleeve and is in sliding fit with the guide sleeve.

8. The elevator speed limiter with the high stability type linkage control according to any one of claims 5 to 7, wherein the hook plate is disposed on an outer side of a fixing seat, a guide through groove is formed in a front side plate or a rear side plate of the fixing seat, one end of the hook plate passes through the guide through groove through a connecting pin to be fixedly connected with the movable chuck, the other end of the hook plate is connected with the linkage rod, a limiting post is disposed on an outer side of the fixing seat, the limiting post and the hook plate are disposed on the same side, a limiting groove is disposed on a lower edge of the hook plate, and the limiting groove can be in limiting clamping connection with the limiting post.

9. The elevator speed limiter with high stability and linked control according to claim 5, wherein the limiting groove on the lower edge of the hook plate is U-shaped.

10. The elevator speed limiter with high stability and linkage control according to claim 1, wherein a U-shaped plate is vertically fixed on the inner side of the speed limiter support plate, positioning holes are formed in the upper arm and the lower arm of the U-shaped plate, and the lower end of the linkage rod penetrates through the two positioning holes in the U-shaped plate and then is connected with the other end of the hook plate.

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