CN118744246A - A processing device for elevator safety clamp - Google Patents

Abstract

The present invention relates to the technical field of elevator parts processing, and proposes a processing device for elevator safety clamps, comprising: a base, a processing mechanism is provided on the base, two fixed plates are symmetrically fixedly installed on the top of the base, and the opposite surfaces of the two fixed plates are rotatably connected with telescopic rods. The processing mechanism moves down to contact and process with the workpiece, and drives the connecting frame and the rack to move down synchronously. At this time, the guide column contacts and guides the guide plate, so that the rack deflects and swings without meshing with the gear. When the processing mechanism contacts the workpiece, the rack and the gear are driven to mesh through the torsion spring. After processing, the processing mechanism drives the rack to move up, and the gear and worm are driven to rotate through the rack, and the worm is linked to the worm wheel to rotate, so that the telescopic rod drives the fixed workpiece to flip 180 degrees, so that the effect of automatic turning over of the workpiece is achieved, the labor intensity of personnel and the time wasted in operation are reduced, and the convenience of use and processing efficiency are effectively improved.

Description

A processing device for elevator safety clamp

Technical Field

The invention relates to the technical field of elevator parts processing, and in particular to a processing device for an elevator safety clamp.

Background Art

The safety clamp is a safety protection device for elevators. The elevator safety clamp device is a safety device that stops the car urgently and clamps it on the guide rail when the elevator speed exceeds the limit (or rated) speed set by the elevator speed limiter, or when the suspension rope breaks or loosens.

An invention patent with a known application number of CN202110266037.9 discloses a multi-directional processing device for processing mechanical parts of elevators. Its background technology proposes that "the existing device needs to use multiple electric components and control components to realize the conversion of process steps when performing multi-directional drilling processing on parts, which directly increases the cost of processing equipment, and cannot realize the conversion of drilling positions through structural improvements during the extension and retraction of the telescopic arm; furthermore, the existing device is prone to produce residues when drilling, and cannot realize the cleaning and removal of residues during the processing process through structural improvements." Therefore, the technical solution to this problem is "including a table body; an adjusting arm is installed on the table body, and a clamping structure is installed on the table body, and an adjustment structure is also installed on the table body; a toggle structure is installed on the adjusting arm; a cleaning structure is installed on the table body; the clamping structure includes a baffle, and the baffle is provided with two pieces, and the two baffles are respectively welded to two clamping blocks" and so on.

However, in the implementation of relevant technologies, it was found that the above-mentioned technical solution has the following problems: although it realizes the effect of linkage adjustment of drilling position conversion during the extension and retraction of the telescopic arm through the provided technical solution, it is inconvenient to automatically flip the workpiece when in use. It can only drive the workpiece to rotate back and forth to adjust the horizontal position through the cooperation of gears, gear rows, worm wheels and worms. When drilling on the other side of the workpiece, personnel are required to operate the clamping structure to release the fixation of the workpiece, and then flip the workpiece and fix it again. The process is relatively cumbersome and time-consuming, which is easy to increase the labor intensity and processing time of personnel, thereby reducing the convenience of use and processing efficiency.

Summary of the invention

The present invention provides a processing device for an elevator safety clamp, which solves the problem in the related art that it is inconvenient to automatically turn over a workpiece.

The technical solution of the present invention is as follows: A processing device for elevator safety clamps, comprising: a base, a processing mechanism is provided on the base, two fixing plates are symmetrically fixedly installed on the top of the base, opposite surfaces of the two fixing plates are rotatably connected with telescopic rods, opposite ends of the two telescopic rods are provided with clamping mechanisms, and one end of one of the telescopic rods passes through the corresponding fixing plate;

A gear is arranged on one side of the fixed plate, a transmission mechanism for rotating the telescopic rod is arranged between the gear and the telescopic rod, a connecting frame is connected to the processing mechanism, a rack meshing with the gear is movably connected at the bottom of the connecting frame through a rotating shaft 1 and a torsion spring 1, and a guide column is rotatably connected to a side surface of the bottom of the rack;

A shell is fixedly mounted on a side of the base through a base block, and a guide plate matched with a guide column is movably connected to the top of the shell through a rotating shaft and a torsion spring;

A lifting mechanism provided on the base for lifting the workpiece;

And a cleaning mechanism is arranged on the base and is used for cleaning processing debris.

Preferably, the transmission mechanism comprises:

a worm gear fixedly connected to one end of a telescopic rod;

A worm connected to one side of a fixed plate and meshing with the worm wheel is rotatably connected through the second base block, and one end of the worm movably passes through the second base block and is connected with the gear.

Preferably, the processing mechanism comprises:

A hydraulic cylinder fixedly mounted on one side of the top of the base;

A connecting plate fixedly connected to the output end of the hydraulic cylinder, wherein the connecting frame is fixedly installed on one side of the connecting plate;

A motor 1 is fixedly mounted on one end of the top of the connecting plate, and an output end of the motor 1 passes through the connecting plate;

And a drill bit fixedly connected to an output end of the motor.

Preferably, the clamping mechanism comprises:

A mounting base fixedly connected to opposite ends of the two telescopic rods;

A bidirectional screw rod 1 is rotatably connected between opposite surfaces of the mounting seat, and a top end of the bidirectional screw rod 1 movably passes through the mounting seat and is fixedly connected to a rotating block;

A guide rod symmetrically fixedly mounted between opposite surfaces of the mounting seat and located on both sides of the bidirectional screw rod;

And two clamping plates which are symmetrically threadedly connected to one surface of the bidirectional screw rod and are slidably connected to the guide rod.

Preferably, the lifting mechanism comprises:

A U-shaped plate fixedly mounted on the top of the base;

Moving parts located in the U-shaped plate;

Two sliders symmetrically arranged on the output end surface of the moving component;

A connecting rod hinged on the top of the two sliders;

A supporting plate hinged to the top ends of the two connecting rods;

And a supporting telescopic rod which is symmetrically fixedly installed on the top of the U-shaped plate and the top end of which is connected to the supporting plate.

The moving parts include:

A bidirectional screw rod 2 is rotatably connected between the two sides of the inner wall of the U-shaped plate, and the two sliders are both threadedly connected to the surface of the bidirectional screw rod 2;

A limit rod fixedly mounted between the two sides of the inner wall of the U-shaped plate and located below the second bidirectional screw rod, and the two sliders are slidably connected to the limit rod;

A second motor is fixedly mounted on one side of the U-shaped plate, and an output end of the second motor movably passes through the U-shaped plate and is connected to a second bidirectional screw rod.

Preferably, the cleaning mechanism comprises:

Two piston cylinders are symmetrically fixedly mounted on the top of the base;

A spring fixedly connected to the inner bottom wall of the piston cylinder;

A piston rod fixedly connected to the top of the spring and slidably connected to the piston cylinder, wherein the top end of the piston rod slidably extends out of the interior of the piston cylinder;

And an air injection component is arranged on the piston cylinder and is used to discharge the gas in the piston cylinder.

The jetting components include:

An air intake pipe fixedly mounted on one side of the bottom surface of the piston cylinder, wherein a one-way valve 1 is provided on the surface of the air intake pipe;

Two air jet pipes are symmetrically fixedly mounted on the top of the base, and a plurality of air jet holes are provided on the surfaces of the two air jet pipes;

An air delivery pipe fixedly mounted on the other side of the bottom surface of the piston cylinder and connected to the two jet pipes respectively, wherein a second one-way valve is provided on the surface of the air delivery pipe;

An extrusion plate symmetrically fixedly mounted on the bottom of the connecting plate for extruding the piston rod;

and a reinforcing plate which is fixedly mounted on the top of the extruded plate and connected to the connecting plate.

The working principle and beneficial effects of the present invention are:

1. When in use, the processing mechanism moves down to contact the workpiece for processing, and drives the connecting frame and the rack to move down synchronously. At this time, the guide column contacts and guides the guide plate, so that the rack deflects and swings without meshing with the gear. When the processing mechanism contacts the workpiece, the torsion spring drives the rack and gear to mesh. After processing, the processing mechanism moves up to separate from the workpiece, and drives the rack and the guide column to move up synchronously. The rack drives the gear and the worm to rotate, and the worm gear is linked to the worm gear, so that the telescopic rod drives the fixed workpiece to flip. After the processing mechanism is reset, the rack and gear are separated. At this time, the workpiece is flipped exactly 180 degrees, so the effect of automatic turning of the workpiece is achieved, which reduces the labor intensity of personnel and the time wasted in operation, and effectively improves the convenience of use and processing efficiency.

2. Motor 2 drives bidirectional screw 2 to rotate, so that the two sliders approach each other along the surface of the limit rod, and drives the connecting rod to rotate so that it drives the supporting plate to move up, so that the workpiece rises between the clamping mechanisms, and at the same time, the supporting plate drives the supporting telescopic rod to extend to support the supporting plate, so as to achieve the purpose of lifting the workpiece. There is no need for personnel to continuously hold and fix the workpiece, so as to reduce the labor and safety risks of personnel when clamping the workpiece. At the same time, the workpiece can be supported by the supporting plate during processing, so as to ensure the stability of the workpiece during the processing.

3. When the processing mechanism moves downward to process the workpiece, the connecting plate moves downward to drive the extrusion plate to move downward, so that the extrusion plate contacts the piston rod and presses it downward. At the same time, the piston rod presses the spring downward, and the gas in the piston cylinder is input into the jet pipe through the air pipe and sprayed out. The gas sprayed from the two jet pipes is diffused to both sides of the base, so that the debris dropped on the base can be blown off to both sides, so as to clean the base surface. When the connecting plate moves upward, the spring drives the piston rod to move upward and reset, and draws outside air into the piston cylinder through the air intake pipe for storage, so as to prepare for the next jet, thereby ensuring the cleanliness of the base and preventing debris from affecting the processing.

BRIEF DESCRIPTION OF THE DRAWINGS

The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

FIG1 is a schematic diagram of the overall three-dimensional structure of the present invention;

FIG2 is a schematic side view of the stereoscopic structure of the present invention;

FIG3 is a schematic diagram of a partial three-dimensional structure of a fixing plate of the present invention;

FIG4 is a schematic diagram of a partial three-dimensional structure of a connecting frame of the present invention;

FIG5 is a schematic diagram of a partial three-dimensional structure of a telescopic rod of the present invention;

FIG6 is a schematic diagram of a partial three-dimensional structure of a U-shaped plate of the present invention;

FIG7 is a schematic cross-sectional perspective view of the piston cylinder of the present invention;

In the figure: 1. base; 2. fixing plate; 3. telescopic rod; 4. gear; 5. connecting frame; 6. rack; 7. guide column; 8. housing; 9. guide plate; 10. worm gear; 11. worm; 12. hydraulic cylinder; 13. connecting plate; 14. motor 1; 15. drill bit; 16. mounting seat; 17. two-way screw 1; 18. guide rod; 19. clamping plate; 20. U-shaped plate; 21. connecting rod; 22. supporting plate; 23. supporting telescopic rod; 24. two-way screw 2; 25. limiting rod; 26. motor 2; 27. piston cylinder; 28. spring; 29. piston rod; 30. air inlet pipe; 31. jet pipe; 32. air delivery pipe; 33. extrusion plate; 34. reinforcement plate; 35. slider.

DETAILED DESCRIPTION

The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

Example

Please refer to Figures 1 to 7. The present invention provides a processing device for an elevator safety clamp, comprising: a base 1, a processing mechanism is provided on the base 1, two fixed plates 2 are symmetrically fixedly installed on the top of the base 1, and the opposite surfaces of the two fixed plates 2 are rotatably connected with telescopic rods 3, and the opposite ends of the two telescopic rods 3 are provided with clamping mechanisms, one end of one of the telescopic rods 3 passes through the corresponding fixed plate 2, wherein the telescopic rod 3 is composed of a sleeve and a movable rod slidably connected in the sleeve, and a hand-tightening bolt threadedly connected to the surface of the sleeve for fixing the movable rod at any position on the telescopic stroke;

A gear 4 is arranged on one side of a fixed plate 2, and a transmission mechanism for rotating the telescopic rod 3 is arranged between the gear 4 and the telescopic rod 3. A connecting frame 5 is connected to the processing mechanism, and a rack 6 meshing with the gear 4 is movably connected at the bottom of the connecting frame 5 through a rotating shaft 1 and a torsion spring 1, and a guide column 7 is rotatably connected to one side of the bottom of the rack 6;

A housing 8 is fixedly mounted on a side of the base 1 through a base block 1, and a guide plate 9 is movably connected to the top of the housing 8 through a rotating shaft 2 and a torsion spring 2 and matched with the guide column 7;

A lifting mechanism provided on the base 1 for lifting the workpiece;

And a cleaning mechanism is arranged on the base 1 for cleaning processing debris.

The transmission mechanism includes:

A worm gear 10 fixedly connected to one end of a telescopic rod 3;

A worm 11 is rotatably connected to a side of a fixed plate 2 and meshed with a worm wheel 10 through the second base block, and one end of the worm 11 moves through the second base block and is connected to the gear 4.

The technical solution provided by this embodiment is: when in use, the lifting mechanism and the clamping mechanism cooperate to fix the workpiece, and then the processing mechanism moves down to contact the workpiece for processing. During the downward movement of the processing mechanism, the connecting frame 5 and the rack 6 can be driven to move down synchronously. At this time, the guide column 7 first contacts the guide plate 9, and under the guidance of the inclined surface of the guide plate 9, the rack 6 deflects and swings compared with the connecting frame 5, and the torsion spring 1 is twisted. At this time, the rack 6 does not mesh with the gear 4. When the processing mechanism contacts the workpiece, the guide column 7 moves to the bottom of the shell 8, and under the action of the torsion spring 1, the rack 6 rotates and resets, so that the guide column 7 enters the shell 8 from the bottom of the shell 8, and the rack 6 and the gear 4 are in contact and meshing. After processing, the lifting mechanism is temporarily separated from the workpiece, and the processing mechanism moves up and separates from the workpiece, and drives the rack 6 and the guide column 7 to move up synchronously, and the rack 6 drives the gear 4 and the worm 11 to rotate, and the worm 11 is linked to the worm wheel 10 to rotate, so that the telescopic rod 3 drives the fixed workpiece to flip, and at the same time, the guide column 7 moves up and contacts the bottom of the guide plate 9, and drives the guide plate 9 to rotate to twist the torsion spring 2, so that the guide column 7 can be moved out of the housing 8 to reset, and the guide column 7 moves out of the housing 8 and drives the guide plate 9 to rotate and reset through the torsion spring 2. When the processing mechanism is reset, the rack 6 is separated from the gear 4, and the workpiece is flipped exactly 180 degrees, so the effect of automatic turning of the workpiece is achieved, and there is no need for personnel to take down the workpiece to flip it during the process, which reduces the labor intensity of personnel and the time wasted in operation, and effectively improves the convenience of use and processing efficiency.

Furthermore, the processing mechanism includes:

A hydraulic cylinder 12 fixedly mounted on one side of the top of the base 1;

A connecting plate 13 is fixedly connected to the output end of the hydraulic cylinder 12, and a connecting frame 5 is fixedly installed on a side surface of the connecting plate 13;

A motor 14 is fixedly mounted on one end of the top of the connecting plate 13, and the output end of the motor 14 passes through the connecting plate 13;

And a drill bit 15 fixedly connected to the output end of the motor 14.

Specifically, during processing, the hydraulic cylinder 12 drives the connecting plate 13 and the connecting frame 5 to move downward, so that the drill bit 15 contacts the surface of the workpiece, and then the motor 14 drives the drill bit 15 to rotate, so as to achieve the purpose of drilling the workpiece. After drilling, the hydraulic cylinder 12 drives the drill bit 15 to move upward and reset. At this time, the rack 6 and the gear 4 cooperate to flip the workpiece 180 degrees, thereby achieving the effect of automatic turning over of the workpiece.

Further, the clamping mechanism comprises:

A mounting base 16 fixedly connected to opposite ends of the two telescopic rods 3;

A bidirectional screw rod 17 connected between opposite surfaces of the mounting seat 16 is rotated, and the top end of the bidirectional screw rod 17 moves through the mounting seat 16 and is fixedly connected to a rotating block;

A guide rod 18 symmetrically fixedly mounted between opposite surfaces of the mounting seat 16 and located on both sides of the bidirectional screw rod 17;

And two clamping plates 19 which are symmetrically threadedly connected to the surface of the bidirectional screw rod 17 and are slidably connected to the guide rod 18.

Specifically, when fixing the workpiece, the lifting mechanism drives the workpiece to rise between the two telescopic rods 3, and then the length of the telescopic rod 3 is adjusted to drive the mounting seat 16 close to the workpiece, so that the workpiece is located between the two clamping plates 19, and then the rotating block is rotated to drive the bidirectional screw 17 to rotate, so that the two clamping plates 19 are close to each other along the surface of the guide rod 18 and contact the bottom and top of the workpiece respectively, thereby achieving the function of clamping and fixing the workpiece, thereby ensuring the stability of the workpiece during processing.

Furthermore, the lifting mechanism comprises:

A U-shaped plate 20 fixedly mounted on the top of the base 1;

A moving part disposed in the U-shaped plate 20;

Two sliders 35 symmetrically arranged on the output end surface of the moving component;

A connecting rod 21 hinged on the top of two sliders 35;

A supporting plate 22 hingedly connected to the top ends of the two connecting rods 21;

And a supporting telescopic rod 23 symmetrically fixedly mounted on the top of the U-shaped plate 20 and connected to the supporting plate 22 at the top, wherein the supporting telescopic rod 23 is a gas spring.

Moving parts include:

The bidirectional screw rod 24 is rotatably connected between the inner walls of the U-shaped plate 20, and the two sliders 35 are both threadedly connected to the surface of the bidirectional screw rod 24;

A limit rod 25 is fixedly mounted between the two sides of the inner wall of the U-shaped plate 20 and located below the second bidirectional screw rod 24, and the two sliders 35 are slidably connected to the limit rod 25;

A second motor 26 is fixedly mounted on one side of the U-shaped plate 20 , and an output end of the second motor 26 movably passes through the U-shaped plate 20 and is connected to the second bidirectional screw rod 24 .

Specifically, when clamping the workpiece, the workpiece is placed on the supporting plate 22, and then the bidirectional screw rod 24 is driven to rotate by the motor 26, so that the two sliders 35 are close to each other along the surface of the limit rod 25, and the connecting rod 21 is driven to rotate so that it drives the supporting plate 22 to move upward, so that the workpiece rises between the clamping mechanisms, and at the same time, the supporting telescopic rod 23 is extended to support the supporting plate 22 through the supporting plate 22, so as to achieve the purpose of lifting the workpiece, and there is no need for personnel to continuously lift the workpiece and fix it, so as to reduce the labor and safety risks of personnel when clamping the workpiece. At the same time, the workpiece can be supported by the supporting plate 22 during processing, so as to ensure the stability of the workpiece during the processing and avoid damage to the workpiece caused by force. When the workpiece is turned over, the motor 26 is reversed to temporarily separate the supporting plate 22 from the workpiece to avoid interference with the turning of the workpiece.

Further, the cleaning mechanism comprises:

Two piston cylinders 27 symmetrically fixedly mounted on the top of the base 1;

A spring 28 fixedly connected to the inner bottom wall of the piston cylinder 27;

A piston rod 29 is fixedly connected to the top of the spring 28 and slidably connected to the piston cylinder 27, and the top end of the piston rod 29 slidably extends out of the interior of the piston cylinder 27;

And an air-injection component is provided on the piston cylinder 27 for discharging the gas in the piston cylinder 27 .

The jet components include:

An air intake pipe 30 is fixedly mounted on one side of the bottom surface of the piston cylinder 27, and a one-way valve 1 is provided on the surface of the air intake pipe 30, wherein the one-way valve 1 can only allow air to enter the air intake pipe 30;

Two air injection pipes 31 are symmetrically fixedly mounted on the top of the base 1, and a plurality of air injection holes are provided on the surfaces of the two air injection pipes 31;

An air delivery pipe 32 is fixedly mounted on the other side of the bottom surface of the piston cylinder 27 and connected to the two jet pipes 31 respectively. A check valve 2 is provided on the surface of the air delivery pipe 32, wherein the check valve 2 can only control the exhaust of the air delivery pipe 32;

A squeezing plate 33 symmetrically fixedly mounted on the bottom of the connecting plate 13 for squeezing the piston rod 29;

And a reinforcing plate 34 fixedly mounted on the top of the extrusion plate 33 and connected to the connecting plate 13 .

Specifically, when the processing mechanism moves downward to process the workpiece, the connecting plate 13 moves downward to drive the extrusion plate 33 to move downward, so that the extrusion plate 33 contacts the piston rod 29 and presses it downward. At the same time, the piston rod 29 presses down to squeeze the spring 28, and the gas in the piston cylinder 27 is input into the injection pipe 31 through the air supply pipe 32 and sprayed out, so that the gas sprayed from the two injection pipes 31 is diffused to both sides of the base 1, so as to blow the debris generated by the processing and falling on the base 1 to both sides, so as to achieve the effect of cleaning the table top of the base 1. When the connecting plate 13 moves upward, the spring 28 drives the piston rod 29 to move upward and reset, and draws outside air into the piston cylinder 27 through the air intake pipe 30 for storage, so as to prepare for the next injection, thereby ensuring the cleanliness of the base 1 and preventing the debris from affecting the processing.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. A processing device of elevator safety tongs, characterized by comprising:

The base is provided with a processing mechanism, two fixing plates are symmetrically and fixedly arranged at the top of the base, the opposite surfaces of the two fixing plates are respectively and rotatably connected with a telescopic rod, the opposite ends of the two telescopic rods are respectively provided with a clamping mechanism, and one end of one telescopic rod penetrates through the corresponding fixing plate;

A gear arranged at one side of the fixed plate, a transmission mechanism used for rotating the telescopic rod is arranged between the gear and the telescopic rod, a connecting frame is connected on the processing mechanism, the bottom of the connecting frame is movably connected with a rack meshed with the gear through a first rotating shaft and a first torsion spring, and one side surface of the bottom of the rack is rotatably connected with a guide post;

The top of the shell is movably connected with a guide plate matched with the guide column through a rotating shaft II and a torsion spring II;

The lifting mechanism is arranged on the base and used for lifting the workpiece;

And the cleaning mechanism is arranged on the base and used for cleaning machining scraps.

2. The processing device of an elevator safety gear according to claim 1, wherein the transmission mechanism comprises:

a worm wheel fixedly connected to one end of one telescopic rod;

the worm is rotatably connected to one side surface of the fixing plate through the second base block and meshed with the worm wheel, and one end of the worm movably penetrates through the second base block and is connected with the gear.

3. The machining device of an elevator safety gear according to claim 1, wherein the machining mechanism comprises:

the hydraulic cylinder is fixedly arranged on one side of the top of the base;

The connecting plate is fixedly connected to the output end of the hydraulic cylinder, and the connecting frame is fixedly arranged on one side surface of the connecting plate;

the output end of the first motor passes through the connecting plate;

And the drill bit is fixedly connected to one output end of the motor.

4. The processing device of an elevator safety gear according to claim 1, wherein the clamping mechanism comprises:

the mounting seats are fixedly connected to opposite ends of the two telescopic rods;

The first bidirectional screw rod is rotatably connected between opposite surfaces of the mounting seat, and the top end of the first bidirectional screw rod movably penetrates through the mounting seat and is fixedly connected with a rotating block;

Guide rods symmetrically and fixedly arranged between opposite surfaces of the mounting seat and positioned on two sides of the bidirectional screw rod;

And two clamping plates which are symmetrically connected with one surface of the bidirectional screw rod in a threaded manner and are connected with the guide rod in a sliding manner.

5. The processing device of an elevator safety gear according to claim 1, wherein the lifting mechanism comprises:

A U-shaped plate fixedly arranged on the top of the base;

A moving part arranged in the U-shaped plate;

two sliding blocks symmetrically arranged on the surface of the output end of the moving part;

a connecting rod hinged at the top of the two sliding blocks;

the bearing plates are hinged at the top ends of the two connecting rods together;

And the supporting telescopic rods are symmetrically and fixedly arranged at the top of the U-shaped plate, and the top ends of the supporting telescopic rods are connected with the supporting plate.

6. The processing device of an elevator safety gear according to claim 5, wherein the moving member comprises:

the two sliding blocks are in threaded connection with the surface of the two bidirectional screw rods II;

the limiting rod is fixedly arranged between two sides of the inner wall of the U-shaped plate and positioned below the two-way screw rod II, and the two sliding blocks are both in sliding connection with the limiting rod;

and the output end of the motor II movably penetrates through the U-shaped plate and is connected with the two bidirectional screw rods.

7. A machining device for an elevator safety gear according to claim 3, wherein the cleaning mechanism comprises:

two piston cylinders symmetrically and fixedly arranged at the top of the base;

A spring fixedly connected to the inner bottom wall of the piston cylinder;

The top end of the piston rod is slidably extended out of the interior of the piston cylinder;

And a gas injection member provided in the piston cylinder for exhausting gas in the piston cylinder.

8. The apparatus for machining an elevator safety gear according to claim 7, wherein the air jetting means comprises:

the air inlet pipe is fixedly arranged on one side of the bottom surface of the piston cylinder, and a one-way valve I is arranged on the surface of the air inlet pipe;

The two air ejector tubes are symmetrically and fixedly arranged at the top of the base, and a plurality of air ejector holes are formed in the surfaces of the two air ejector tubes;

The gas transmission pipe is fixedly arranged on the other side of the bottom surface of the piston cylinder and is respectively connected with the two gas injection pipes, and a second check valve is arranged on the surface of the gas transmission pipe;

the extruding plates are symmetrically and fixedly arranged at the bottoms of the connecting plates and used for extruding the piston rods;

And the reinforcing plate is fixedly arranged at the top of the extrusion plate and is connected with the connecting plate.