A traction device for an elevator

Abstract

The present invention relates to the technical field of traction equipment, and specifically to a traction device for an elevator, comprising a traction machine, an output shaft installed on the traction machine, and a traction wheel installed on the output shaft for easy installation or disassembly. The traction device also comprises: a fixed ring, the fixed ring is sleeved on the outer wall of the output shaft, and a plurality of L-shaped sliding plates are movably installed on the outer wall of the fixed ring, and adjacent L-shaped sliding plates are connected by an arc plate to ensure that the plurality of L-shaped sliding plates can move synchronously; the present invention controls the pressing mode to receive the rotating baffle into the groove on the mounting rod, and the thrust generated by the connecting spring can push the mounting ring to move to the left side. At this time, the positioning frame connected to the mounting ring through the L-shaped connecting plate will be separated from the contact between the L-shaped sliding plate, so that it is convenient to control the rotation and position adjustment of the L-shaped sliding plate in the later stage to disassemble the traction wheel.

Description

Technical Field

[0001] The present invention relates to the technical field of traction equipment, and specifically relates to a traction device for an elevator. Background Technique

[0002] As one of the core components of an elevator system, the traction device mainly consists of a traction machine, a traction wheel, a traction steel wire rope, a deflector sheave, etc. During the operation of the elevator, by precisely controlling the position and running distance of the car, the elevator can be accurately stopped at different floors.

[0003] In some existing traction devices, the traction machine (such as a gearless traction machine) and the traction wheel are connected by an interference fit connection on the cylindrical surface, that is, the traction wheel is sleeved on the outer wall of the output shaft of the traction machine. Since the output shaft of the traction machine with a larger outer diameter is pressed into the traction wheel with a smaller inner diameter, there is a certain interference amount on the mating surface diameter between the two, which is convenient for efficient and stable operation. Then, the connection between the two is strengthened by locking with a backing plate and a nut. During the long-term use of the traction wheel, due to the frictional loss between the traction wheel and the traction steel wire rope, the traction wheel needs to be replaced regularly. When replacing, a hydraulic puller is often used to disassemble the traction wheel. Due to the excessive frictional force between the traction machine and the traction wheel, this disassembly method not only easily causes damage to the surface of the output shaft of the traction machine, but also is extremely time-consuming and laborious to disassemble. Summary of the Invention

[0004] The purpose of the present invention is to provide a traction device for an elevator to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A traction device for an elevator, including a traction machine, an output shaft installed on the traction machine, and a traction wheel installed on the output shaft for easy installation or disassembly. The traction device further includes:

[0006] A fixing ring, the fixing ring is sleeved on the outer wall of the output shaft, and a number of L-shaped sliding plates are movably installed on the outer wall of the fixing ring. Adjacent L-shaped sliding plates are connected by an arc-shaped plate to ensure that the number of L-shaped sliding plates can move synchronously. A connecting plate is installed on each L-shaped sliding plate, and a triangular guiding plate and a mounting table are fixedly installed on the connecting plate. A linkage ring is commonly connected between a number of mounting tables. An insertion rod is fixedly installed on each mounting table, and two rotating shafts are rotatably installed on each insertion rod. A pry bar and a linkage bar are arranged on the outer wall of each rotating shaft. Two fixing blocks are also fixedly installed on the insertion rod for fitting the linkage bar to limit the further movement of the linkage bar;

[0007] Positioning ring, the positioning ring is fixedly sleeved on the outer wall of the traction wheel, several connecting rods are movably installed on the positioning ring, an activity ring is jointly connected to the several connecting rods, several through holes matching the diameter of the insertion rod are arranged on the activity ring, the insertion rod can pass through the through holes on the activity ring, and then follow the rotating shaft to rotate and extend out to abut against the activity ring through the pry plate, so that the output shaft and the traction wheel can be connected as a whole.

[0008] Several L-shaped connecting blocks are also fixedly installed on the outer wall of the traction wheel, fixing frames are fixedly installed on the L-shaped connecting blocks, a clamping plate is movably installed in the fixing frame, the clamping plate is connected to the L-shaped connecting block through a return spring, the triangular guide plate stops moving after sliding and fitting the L-shaped connecting block following the L-shaped sliding plate, at this time, the clamping plate can be fitted to the triangular guide plate by the contraction of the return spring, which is used to prompt that the triangular guide plate has been installed in place.

[0009] An installation ring is also movably sleeved on the outer wall of the output shaft, several L-shaped connecting plates are fixedly installed on the outer wall of the installation ring, positioning frames are fixedly installed on the L-shaped connecting plates, the inner frame width dimension of the positioning frame is the same as the width dimension of the L-shaped sliding plate, and the positioning frame is movably fitted to the outer wall of the L-shaped sliding plate, which can facilitate restricting the continuous rotation of the L-shaped sliding plate.

[0010] A telescopic connecting rod is fixedly installed on the installation ring, the telescopic connecting rod is composed of a cross bar and a telescopic rod, the cross bar is a hollow cylinder, and a through hole matching the diameter of the telescopic rod is arranged on one side of the cross bar, the telescopic rod extends into the inner cavity of the cross bar through the through hole on the cross bar, a fixing ring is fixedly connected to the side of the cross bar away from the telescopic rod, an installation ring is fixedly connected to the side of the telescopic rod away from the cross bar, and the fixing ring and the installation ring are connected by several connecting springs, and the installation ring can be driven to move smoothly through the cooperation of the connecting springs and the telescopic connecting rod.

[0011] Several convex plates are fixedly installed on the outer wall of the output shaft, through holes are arranged on the convex plates, installation rods are movably inserted in the through holes, two grooves are arranged on the outer walls of the installation rods, rotating baffles are rotatably installed in the grooves, and after the installation rod passes through the convex plate, the rotating baffle rotates out of the groove and fits the convex plate, which can restrict the movement of the installation ring.

[0012] Several limiting rings are movably sleeved on the outer wall of the installation rod, and the limiting rings and the fixing rings are connected by several connecting cross bars.

[0013] A circular slide groove adapted to the L-shaped sliding plate is arranged on the outer wall of the fixed ring, and the L-shaped sliding plates are all extended into the circular slide groove, and a circular groove is arranged on the inner wall of the circular slide groove, and a circular ring is movably installed in the circular groove, and the circular ring is fixedly connected to several L-shaped sliding plates as a whole, so as to ensure that the L-shaped sliding plate moves smoothly in the circular slide groove on the fixed ring.

[0014] The output shaft is provided with an insertion groove, and the inner wall of the insertion groove and the outer wall of the traction wheel are provided with a plurality of teeth that can mesh with each other, which can increase the connection strength between the output shaft and the traction wheel.

[0015] Two hidden grooves are arranged on the outer wall of the insertion rod, and the length and width of the two hidden grooves are the same as those of the pry plate. The pry plate can be hidden and installed in the hidden grooves to avoid the pry plate being unable to be hidden and installed to affect the insertion rod passing through the through hole on the movable ring.

[0016] Two holes are arranged on the inner wall of the hidden groove on the insertion rod, and the diameter of the holes is the same as the diameter of the rotating shaft, and the rotating shaft is connected to the inner wall of the hidden groove on the insertion rod through a torsion spring, so that after the insertion rod passes through the through hole on the movable ring, the pry plate can be rotated and unfolded by the torsion spring to limit the movable ring from continuing to move.

[0017] The side walls of the triangular guide plate and the engaging plate on the side close to each other are both provided with inclined surfaces that can fit with each other, so that the triangular guide plate can push the engaging plate to move during the sliding process of the L-shaped sliding plate.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention controls the pressing method to retract the rotating baffle into the groove on the mounting rod, and the thrust generated by the connecting spring can push the mounting ring to move to the left. At this time, the positioning frame connected to the mounting ring through the L-shaped connecting plate will be separated from the contact with the L-shaped sliding plate, which is convenient for later controlling the rotation and position adjustment of the L-shaped sliding plate to disassemble the traction wheel.

[0020] By controlling the pressing pry plate to return to the hidden groove on the outer wall of the rotating shaft, the movable circle is pushed to move to the right, so that the insertion rod is moved out of the through hole on the movable circle, and then the L-shaped sliding plate is controlled to rotate in the circular sliding groove on the outer wall of the fixed circle to make the triangular guide plate disengage from the contact between the L-shaped connecting block, so that the traction wheel can be released from the lateral restriction between the output shaft, making it convenient to directly pull out the traction wheel for replacement.

[0021] By controlling the L-shaped sliding plate to slide in the circular chute on the fixed ring, the triangular guide plate can move along with the L-shaped sliding plate. After the clamping plate rotates and fits the L-shaped connecting block, it moves to the left by pushing the connecting rod, and the insertion rod on the mounting table passes through the through hole on the movable ring. At this time, the torsion spring makes the rotating shaft rotate automatically, and the pry bar and the linkage bar on the rotating shaft rotate synchronously. When the linkage bar touches the fixed block, the pry bar automatically moves out of the hidden groove on the insertion rod, restricting the continuous movement of the movable ring, which is convenient for providing a lateral restriction effect on the traction wheel when docking the output shaft with the traction wheel, and preventing the traction wheel from falling off. Description of the Drawings

[0022] Figure 1 Schematic diagram of the overall structure of the present invention.

[0023] Figure 2 Exploded schematic diagram of the output shaft structure of the present invention.

[0024] Figure 3 Schematic diagram of the L-shaped sliding plate structure of the present invention.

[0025] Figure 4 For the present invention Figure 3 Enlarged schematic diagram of the structure at A in

[0026] Figure 5 Schematic diagram of the traction wheel structure of the present invention.

[0027] Figure 6 Schematic diagram of the L-shaped connecting block structure of the present invention.

[0028] Figure 7 Schematic diagram of the fixed ring structure of the present invention.

[0029] Figure 8 Schematic diagram of the output shaft structure of the present invention.

[0030] Figure 9 Schematic diagram of the mounting ring structure of the present invention.

[0031] Figure 10 For the present invention Figure 9 Enlarged schematic diagram of the structure at B in

[0032] Figure 11 Partial schematic diagram of the output shaft structure of the present invention.

[0033] In the figure: 1, traction machine; 2, output shaft; 3, traction wheel; 4, fixed ring; 5, L-shaped sliding plate; 6, arc plate; 7, connecting plate; 8, triangular guide plate; 9, mounting table; 10, linkage ring; 11, inserted rod; 12, rotating shaft; 13, pry plate; 14, linkage bar; 15, fixed block; 16, positioning ring; 17, movable ring; 18, connecting rod; 19, L-shaped connecting block; 20, fixed frame; 21, engaging plate; 22, mounting ring; 23, telescopic connecting rod; 24, connecting spring; 25, L-shaped connecting plate; 26, positioning frame; 27, convex plate; 28, mounting rod; 29, rotating baffle; 30, limiting ring; 31, connecting cross bar; 32, return spring. Detailed implementation manners

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0035] Please refer to Figures 1 to 11, the present invention provides a technical solution for a traction device for an elevator: A traction device for an elevator includes a traction machine 1. A output shaft 2 is fixedly installed at the output end of the traction machine 1. There is an insertion groove on the right side of the output shaft 2, and a traction wheel 3 adapted to the diameter of the insertion groove is movably inserted into the insertion groove. A number of mutually meshing teeth are provided on the outer wall of the traction wheel 3 and the inner wall of the insertion groove, so that after the traction wheel 3 is inserted into the insertion groove on the output shaft 2, the traction wheel 3 can synchronously rotate with the output shaft 2 under the drive of the traction machine 1. A fixing ring 4 is fixedly installed on the outer wall of the output shaft 2. A circular sliding groove is provided on the outer wall of the fixing ring 4, and a number of L-shaped sliding plates 5 are slidably installed in the circular sliding groove. A circular groove is provided on the inner wall of the circular sliding groove, and a ring is movably installed in the circular groove. The ring is fixedly connected to a number of L-shaped sliding plates 5 as a whole, which is convenient to prevent the L-shaped sliding plates 5 from falling off when the L-shaped sliding plates 5 slide in the circular sliding groove. And by covering the circular groove with the ring, it can prevent impurities from staying in the circular groove, resulting in the inability of the ring to rotate. Adjacent L-shaped sliding plates 5 are connected by arc-shaped plates 6. A connecting plate 7 is fixedly installed on the right side of a number of L-shaped sliding plates 5. A triangular guiding plate 8 is fixedly installed on the side wall of the connecting plate 7 close to the output shaft 2, and the triangular guiding plate 8 is movably attached to the outer wall of the output shaft 2. An installation platform 9 is fixedly installed on the right side wall of the connecting plate 7. A linkage ring 10 is connected to a number of the installation platforms 9 together. Through the linkage ring 10, it is convenient to make a number of installation platforms 9 move synchronously when the L-shaped sliding plates 5 slide in the circular sliding groove. Insertion rods 11 are fixedly installed on the right side walls of the installation platforms 9. There are two hidden grooves on the outer wall of the insertion rod 11, and rotating shafts 12 are provided in the hidden grooves. There are two holes on the inner wall of the hidden groove, and the diameter of the holes is the same as the diameter of the rotating shaft 12. The rotating shaft 12 is connected to the inner wall of the hidden groove by a torsion spring. Prying plates 13 are fixedly installed on the outer walls of the rotating shafts 12, and the length and width dimensions of the prying plates 13 are the same as the length and width dimensions of the hidden grooves, to prevent the prying plates 13 from being unable to be hidden and installed on the outer wall of the insertion rod 11, resulting in the prying plates 13 affecting the insertion rod 11 passing through the through hole on the movable ring 17 during the later use process. And after the insertion rod 11 passes through the through hole on the movable ring 17, the prying plate 13 can be rotated and unfolded by the torsion spring to fit the movable ring 17, so that the movable ring 17 stops moving. A linkage bar 14 is also fixedly installed on the outer wall of the rotating shaft 12. Two fixing blocks 15 are also fixedly installed on the right side of the insertion rod 11. By the fixing blocks 15 fitting with the linkage bar 14 that rotates following the rotating shaft 12, the movement range of the prying plate 13 can be restricted.

[0036] A positioning ring 16 and several L-shaped connecting blocks 19 are fixedly installed on the outer wall of the traction wheel 3. The L-shaped connecting blocks 19 are all located on the left side of the positioning ring 16. The positioning ring 16 is provided with several through holes, and connecting rods 18 are movably installed in the through holes of the several positioning rings 16. The left sides of the several connecting rods 18 are commonly connected to a movable ring 17. The movable ring 17 is provided with several through holes matching the diameter of the insertion rod 11. Fixed frames 20 are fixedly installed on the L-shaped connecting blocks 19. Clamping plates 21 are movably installed in the inner frames of the fixed frames 20, and the clamping plates 21 are in an L-shaped shape. The short head parts of the clamping plates 21 and the L-shaped connecting blocks 19 are connected by return springs 32. Inclined surfaces that can fit each other are provided on the side walls of the triangular guide plate 8 and the clamping plate 21 that are close to each other. During the process of the L-shaped sliding plate 5 driving the triangular guide plate 8 to rotate, the inclined surface on the triangular guide plate 8 will contact the inclined surface on the clamping plate 21 during the rotation process, and the clamping plate 21 will be pushed to move to the right during the continuous movement of the triangular guide plate 8. The triangular guide plate 8 can stop rotating by fitting the L-shaped connecting block 19 during the rotation process.

[0037] After inserting the traction wheel 3 into the insertion groove on the output shaft 2, by controlling the L-shaped sliding plate 5 to slide in the circular sliding groove on the fixed ring 4, the triangular guide plate 8 can move following the L-shaped sliding plate 5 and contact the clamping plate 21 during the movement process, pushing the clamping plate 21 to move to the right. After the clamping plate 21 rotates and fits the L-shaped connecting block 19, it indicates that the L-shaped sliding plate 5 has moved in place. Then, by pushing the connecting rod 18 to move to the left, the insertion rod 11 located on the mounting table 9 can be passed through the through hole on the movable ring 17. At this time, the torsion spring makes the rotating shaft 12 rotate independently, so that the pry plates 13 and the linkage bars 14 located on the rotating shaft 12 rotate synchronously. When the linkage bar 14 contacts the fixed block 15, the pry plate 13 automatically moves out of the hidden groove on the insertion rod 11, restricting the continuous movement of the movable ring 17.

[0038] An installation ring 22 is movably installed on the outer wall of the output shaft 2. Several L-shaped connecting plates 25 are fixedly installed on the outer wall of the installation ring 22. Positioning frames 26 are fixedly installed on the right sides of the L-shaped connecting plates 25, and the width dimension of the inner frame of the positioning frame 26 is the same as the width dimension of the L-shaped sliding plate 5. After the positioning frame 26 is attached to the outer wall of the L-shaped sliding plate 5, it is convenient to restrict the L-shaped sliding plate 5 from sliding in the circular sliding groove on the fixed ring 4 through the positioning frame 26, resulting in the insertion rod 11 being unable to be inserted on the movable ring 17. By attaching the positioning frame 26 to the L-shaped sliding plate 5, it is convenient to restrict the L-shaped sliding plate 5 from continuing to rotate by attaching the positioning frame 26 to the outer wall of the L-shaped sliding plate 5 after the L-shaped sliding plate 5 moves in place.

[0039] A plurality of telescopic connecting rods 23 and connecting springs 24 are connected between the mounting ring 22 and the fixing ring 4. The telescopic connecting rod 23 is composed of a cross bar and a telescopic rod. The cross bar is a hollow cylinder, and a through hole matching the diameter of the telescopic rod is provided on one side of the cross bar. The telescopic rod extends into the inner cavity of the cross bar through the through hole on the cross bar, and the side of the cross bar away from the telescopic rod is fixedly connected to the fixing ring 4, and the side of the telescopic rod away from the cross bar is fixedly connected to the mounting ring 22. The connecting spring 24 cooperates with the telescopic connecting rod 23 to facilitate the mounting ring 22 to be reset after moving.

[0040] A plurality of convex plates 27 are fixedly mounted on the outer wall of the output shaft 2, and the convex plates 27 are all provided with through holes, and mounting rods 28 are movably inserted in the through holes, and the mounting rods 28 are all fixedly mounted on the right side wall of the mounting ring 22, and two grooves are provided on the outer wall of the mounting rod 28, and a rotating baffle 29 is provided in the grooves, and a cross bar is provided on the rotating baffle 29, which is rotatably mounted on the inner wall of the groove of the mounting rod 28, and the cross bar and the rotating baffle 29 are rotationally connected through a torsion spring, a limit ring 30 is movably sleeved on the outer wall of the mounting rod 28, and a plurality of connecting cross bars 31 are fixedly mounted on the limit ring 30, and the right side of the connecting cross bar 31 is fixedly connected to the fixing ring 4, after the rotating baffle 29 is rotated by the torsion spring and fits the limit ring 30, it is convenient to limit the rotating baffle 29 from continuing to rotate.

[0041] After the insertion rod 11 passes through the through hole on the movable ring 17, the connecting spring 24 is contracted to allow the mounting rod 28 to pass through the through hole on the convex plate 27 and the rotating baffle 29 to extend to the right side of the convex plate 27, and then the rotating baffle 29 is rotated by the torsion spring to extend out of the groove on the mounting rod 28 and fit the limit ring 30, that is, the rotating baffle 29 fits the right side wall of the convex plate 27 to limit the mounting ring 22 from continuing to move. At this time, the mounting ring 22 connected to the mounting rod 28 moves synchronously, and the positioning frame 26 on the mounting ring 22 will move to the L-shaped sliding plate 5, limiting the L-shaped sliding plate 5 from continuing to move, thereby completing the installation of the traction wheel 3.

[0042] When the traction sheave 3 needs to be disassembled, the rotating baffle 29 is first rotated and extended into the groove on the mounting rod 28 by manually pressing. At this time, the thrust generated by the connecting spring 24 will push the mounting ring 22 to move to the left, driving the positioning frame 26 located on the periphery of the L-shaped sliding plate 5 to break away from the contact with the L-shaped sliding plate 5, and press the pry plate 13 back into the hidden groove on the outer wall of the rotating shaft 12, pushing the movable ring 17 to move to the right, so that the insertion rod 11 is moved out of the through hole on the movable ring 17, and then the L-shaped sliding plate 5 is controlled to rotate in the circular groove on the outer wall of the fixed ring 4, so that the triangular guide plate 8 is separated from the contact with the L-shaped connecting block 19, and the traction sheave 3 can be pulled out from the insertion groove on the output shaft 2 for replacement.

[0043] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A traction device for an elevator, comprising a traction machine, an output shaft installed on the traction machine, and a traction wheel installed on the output shaft for convenient installation or disassembly, characterized in that, The traction device further includes: A fixed ring, which is sleeved on the outer wall of the output shaft. A number of L-shaped sliding plates are movably installed on the outer wall of the fixed ring. Adjacent L-shaped sliding plates are connected by arc-shaped plates to ensure that the several L-shaped sliding plates can move synchronously. Connecting plates are installed on the L-shaped sliding plates, and triangular guide plates and mounting platforms are fixedly installed on the connecting plates. A linkage ring is jointly connected between the several mounting platforms. Insertion rods are fixedly installed on the mounting platforms. Two rotating shafts are rotatably installed on each insertion rod. Pry plates and linkage bars are arranged on the outer walls of the rotating shafts. Two fixing blocks are also fixedly installed on the insertion rods to limit the continuous movement of the linkage bar after fitting the linkage bar; A positioning ring, which is fixedly sleeved on the outer wall of the traction wheel. A number of connecting rods are movably installed on the positioning ring. An activity ring is jointly connected between the several connecting rods. A number of through holes with a diameter size matching that of the insertion rod are arranged on the activity ring. The insertion rod can pass through the through holes on the activity ring and then extend out and abut against the activity ring following the rotation of the rotating shaft through the pry plate, so that the output shaft and the traction wheel can be connected into a whole; An installation ring is also movably sleeved on the outer wall of the output shaft. A number of L-shaped connecting plates are fixedly installed on the outer wall of the installation ring. Positioning frames are fixedly installed on the L-shaped connecting plates. The inner frame width size of the positioning frame is the same as the width size of the L-shaped sliding plate. By movably fitting the outer wall of the L-shaped sliding plate through the positioning frame, it is convenient to limit the continuous rotation of the L-shaped sliding plate.

2. The traction device for an elevator according to claim 1, characterized in that: A number of L-shaped connecting blocks are fixedly installed on the outer wall of the traction wheel. Fixed frames are fixedly installed on the L-shaped connecting blocks. A clamping plate is movably installed in the fixed frame. The clamping plate and the L-shaped connecting block are connected by a return spring. After the triangular guide plate slides and fits the L-shaped connecting block following the L-shaped sliding plate and stops moving, at this time, the clamping plate can be fitted to the triangular guide plate by the contraction of the return spring to prompt that the triangular guide plate has been installed in place.

3. A traction device for an elevator according to claim 1, characterized in that: A telescopic connecting rod is fixedly installed on the installation ring. The telescopic connecting rod is composed of a cross bar and a telescopic rod. The cross bar is a hollow cylinder, and a through hole with a diameter size matching that of the telescopic rod is arranged on one side of the cross bar. The telescopic rod extends into the inner cavity of the cross bar through the through hole on the cross bar. The side of the cross bar away from the telescopic rod is fixedly connected to the fixed ring. The side of the telescopic rod away from the cross bar is fixedly connected to the installation ring. The fixed ring and the installation ring are connected by a number of connecting springs. The cooperation of the connecting springs and the telescopic connecting rod can facilitate the smooth movement of the installation ring.

4. A traction device for an elevator according to claim 1, characterized in that: A number of convex plates are fixedly installed on the outer wall of the output shaft. Through holes are arranged on the convex plates, and installation rods are movably inserted into the through holes. Two grooves are arranged on the outer walls of the installation rods, and rotating baffles are rotatably installed in the grooves. After the installation rod passes through the convex plate, the rotating baffle rotates out of the groove and fits the convex plate to limit the movement of the installation ring.

5. A traction device for an elevator according to claim 4, characterized in that: A number of limiting rings are movably sleeved on the outer wall of the installation rod, and the limiting rings and the fixed ring are connected by a number of connecting cross bars.

6. The traction device for an elevator according to claim 1, characterized in that: A circular chute adapted to the L-shaped sliding plate is provided on the outer wall of the fixed ring. The L-shaped sliding plates all extend into the circular chute. A circular groove is provided on the inner wall of the circular chute, and a ring is movably installed in the circular groove. The ring is fixedly connected to a number of L-shaped sliding plates as a whole, which is convenient for ensuring the stable movement of the L-shaped sliding plate in the circular chute of the fixed ring.

7. A traction device for an elevator according to claim 1, characterized in that: An insertion groove is provided on the output shaft, and a number of mutually meshing teeth are provided on the inner wall of the insertion groove and the outer wall of the traction wheel, which is convenient for increasing the connection strength between the output shaft and the traction wheel.

8. A traction device for an elevator according to claim 1, characterized in that: Two hidden grooves are provided on the outer wall of the insertion rod, and the length and width dimensions of the two hidden grooves are the same as those of the pry bar. The pry bar can be hidden and installed in the hidden groove to prevent the inability to hide the installation of the pry bar from affecting the insertion rod passing through the through hole on the movable ring.

9. The traction device for an elevator according to claim 8, characterized in that: Two holes are provided on the inner wall of the hidden groove on the insertion rod, and the diameter dimensions of the holes are the same as those of the rotating shaft. The rotating shaft and the inner wall of the hidden groove on the insertion rod are connected by a torsion spring, which is convenient for making the pry bar rotate and unfold automatically through the torsion spring after the insertion rod penetrates the through hole on the movable ring, and restricting the continuous movement of the movable ring.

10. A traction device for an elevator according to claim 1, characterized in that: Inclined surfaces that can fit with each other are provided on the side walls of the triangular guide plate and the clamping plate close to each other, which is convenient for the triangular guide plate to push the clamping plate to move during the sliding process of the L-shaped sliding plate.

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