Traction device for elevator

Abstract

The invention relates to the technical field of traction equipment, in particular to a traction device for an elevator, which comprises a traction machine, an output shaft mounted on the traction machine, and a traction wheel mounted on the output shaft and convenient to mount or dismount, and further comprises a fixing ring sleeved on the outer wall of the output shaft, a plurality of L-shaped sliding plates are movably installed on the outer wall of the fixing ring, and the adjacent L-shaped sliding plates are connected through arc-shaped plates so that it can be guaranteed that the L-shaped sliding plates can move synchronously. A rotating baffle is stored in a groove in a mounting rod in a pressing control mode, a mounting ring can be pushed to move towards the left side through pushing force generated by a connecting spring, at the moment, a positioning frame connected with the mounting ring through an L-shaped connecting plate is separated from an L-shaped sliding plate, and the L-shaped sliding plate is conveniently controlled to rotate to adjust the position in the later period; and the traction wheel is disassembled.

Description

Technical Field

[0001] The present invention relates to the technical field of traction equipment, in particular to a traction device for an elevator. Background Art

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

[0003] In some existing traction devices, the traction machine (such as a gearless traction machine) and the traction wheel are connected by a cylindrical interference fit connection, that is, the traction wheel is mounted on the outer wall of the output shaft of the traction machine. Since the traction machine output shaft with a larger outer diameter is pressed into the traction wheel with a smaller inner diameter, the matching surface diameters between the two have a certain interference fit, which facilitates efficient and stable operation. The connection between the two is then locked by a pad and a nut. During long-term use, the traction wheel needs to be replaced regularly due to friction loss between the traction wire rope. When replacing, a hydraulic puller is often used to disassemble the traction wheel. Since the friction between the traction machine and the traction wheel is too large, this disassembly method is not only easy to cause damage to the surface of the output shaft of the traction machine, but also extremely time-consuming and labor-intensive to disassemble. Summary of the invention

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

[0005] To achieve the above object, the present invention provides the following technical solution: A traction device for an elevator, comprising a traction machine, an output shaft mounted on the traction machine, and a traction wheel mounted on the output shaft for easy installation or removal, the traction device also comprising: A fixed ring, the fixed ring is sleeved on the outer wall of the output shaft, a plurality 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 plates, so as to ensure that the plurality of L-shaped sliding plates can move synchronously, connecting plates are installed on the L-shaped sliding plates, triangular guide plates and mounting tables are fixedly installed on the connecting plates, a linkage ring is commonly connected between the plurality of mounting tables, a plug-in rod is fixedly installed on the mounting table, two rotating shafts are rotatably installed on the plug-in rod, a pry plate and a linkage bar are arranged on the outer wall of the rotating shaft, and two fixing blocks are also fixedly installed on the plug-in rod, so as to limit the linkage bar from continuing to move after being fitted with the linkage bar; A positioning ring, which is fixedly sleeved on the outer wall of the traction wheel, and a plurality of connecting rods are movably installed on the positioning ring, and a movable ring is commonly connected to the plurality of connecting rods. The movable ring is provided with a plurality of through holes matching the diameter of the plug-in rods. The plug-in rod can pass through the through holes on the movable ring, and then extend out to contact the movable ring through the pry plate following the rotation of the rotating shaft, so that the output shaft and the traction wheel can be connected as a whole.

[0006] A plurality of L-shaped connecting blocks are fixedly mounted on the outer wall of the traction wheel, and a fixing frame is fixedly mounted on each of the L-shaped connecting blocks, and a clamping plate is movably mounted in the fixing frame. The clamping plate and the L-shaped connecting block are connected by a reset spring. The triangular guide plate follows the L-shaped sliding plate to slide and fit the L-shaped connecting block and then stops moving. At this time, the reset spring contracts so that the clamping plate can fit the triangular guide plate, which is used to prompt that the triangular guide plate has been installed in place.

[0007] A mounting ring is movably mounted on the outer wall of the output shaft, and a plurality of L-shaped connecting plates are fixedly mounted on the outer wall of the mounting ring. Positioning frames are fixedly mounted on the L-shaped connecting plates, and the inner frame width of the positioning frames is the same as the width of the L-shaped sliding plate. The positioning frame can be movably fitted on the outer wall of the L-shaped sliding plate to facilitate limiting the further rotation of the L-shaped sliding plate.

[0008] A telescopic connecting rod is fixedly installed on the mounting ring, and the telescopic connecting rod consists 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. The side of the cross bar away from the telescopic rod is fixedly connected to the fixing ring, and the side of the telescopic rod away from the cross bar is fixedly connected to the mounting ring. The fixing ring and the mounting ring are connected by a plurality of connecting springs. The connecting springs and the telescopic connecting rod cooperate to facilitate the mounting ring to move smoothly.

[0009] A plurality of convex plates are fixedly mounted on the outer wall of the output shaft, and through holes are provided on the convex plates, and mounting rods are movably inserted in the through holes, and two grooves are provided on the outer wall of the mounting rods, and rotating baffles are rotatably mounted in the grooves. After the mounting rod passes through the convex plate, the rotating baffle is rotated out of the groove and fits the convex plate, thereby limiting the movement of the mounting ring.

[0010] A plurality of limiting rings are movably sleeved on the outer wall of the installation rod, and the limiting rings and the fixing rings are connected with each other through a plurality of connecting cross bars.

[0011] 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.

[0012] 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.

[0013] 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.

[0014] 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.

[0015] 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.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 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.

[0017] 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.

[0018] The L-shaped guide plate is controlled to slide in the circular groove on the fixed ring, so that the triangular guide plate can follow the L-shaped sliding plate to move, and after the engaging plate rotates to fit the L-shaped connecting block, the connecting rod is pushed to move to the left, and the plug-in rod on the mounting table passes through the through hole on the movable ring. At this time, the rotating shaft is rotated autonomously by the torsion spring, so that the pry plate and the linkage bar on the rotating shaft rotate synchronously. When the linkage bar contacts the fixed block, the pry plate automatically moves out of the hidden groove on the plug-in rod, restricting the movable ring from continuing to move, so that when the output shaft is connected to the traction wheel, a lateral restriction effect can be provided to the traction wheel to prevent the traction wheel from falling off. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the output shaft structure decomposition of the present invention.

[0021] Figure 3 It is a schematic diagram of the structure of the L-shaped sliding plate of the present invention.

[0022] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure in the middle.

[0023] Figure 5 It is a schematic diagram of the traction wheel structure of the present invention.

[0024] Figure 6 It is a schematic diagram of the L-shaped connecting block structure of the present invention.

[0025] Figure 7 It is a schematic diagram of the structure of the fixing ring of the present invention.

[0026] Figure 8 It is a schematic diagram of the output shaft structure of the present invention.

[0027] Fig. 9 It is a schematic diagram of the structure of the installation ring of the present invention.

[0028] Fig.10 For the present invention Fig. 9 Enlarged schematic diagram of the structure at point B in the middle.

[0029] Fig.11 It is a schematic diagram of the local structure of the output shaft of the present invention.

[0030] 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. plug-in 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. clamping 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. reset spring. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in 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.

[0032] See also Figures 1 to 11The present invention provides a technical solution for a traction device for an elevator: a traction device for an elevator, comprising a traction machine 1, an output shaft 2 is fixedly installed at the output end of the traction machine 1, an insertion groove is arranged on the right side of the output shaft 2, and a traction wheel 3 matching the diameter of the insertion groove is movably inserted in the insertion groove, a plurality of teeth that can mesh with each other are arranged 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 follow the output shaft 2 to rotate 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 slide groove is arranged on the outer wall of the fixing ring 4, and a circular slide groove is arranged in the inner wall of the circular slide groove. A plurality of L-shaped sliding plates 5 are movably installed, a circular groove is provided on the inner wall of the circular groove, and a circular ring is movably installed in the circular groove, and the circular ring is fixedly connected to the plurality of L-shaped sliding plates 5 as a whole, which can facilitate the L-shaped sliding plate 5 to slide in the circular groove to prevent the L-shaped sliding plate 5 from falling off, and the circular groove is fully covered by the circular ring, which can prevent impurities from staying in the circular groove, causing the circular ring to be unable to rotate, and adjacent L-shaped sliding plates 5 are connected by arc plates 6, and a connecting plate 7 is fixedly installed on the right side of the plurality of L-shaped sliding plates 5, and a triangular guide plate 8 is fixedly installed on the side wall of the connecting plate 7 close to the output shaft 2, and the triangular guide plate 8 is movably fitted on the output shaft 2, a mounting platform 9 is fixedly installed on the right side wall of the connecting plate 7, and a plurality of the mounting platforms 9 are commonly connected with a linkage ring 10, through which the linkage ring 10 can facilitate the synchronous movement of the plurality of mounting platforms 9 when the L-shaped sliding plate 5 slides in the circular slide groove, and a plug-in rod 11 is fixedly installed on the right side wall of the mounting platform 9, and two hidden grooves are arranged on the outer wall of the plug-in rod 11, and a rotating shaft 12 is arranged in each hidden groove, and two holes are arranged 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, and a pry plate is fixedly installed on the outer wall of the rotating shaft 12 13, and the length and width of the pry plate 13 are the same as the length and width of the hidden groove, so as to avoid the pry plate 13 being unable to be hidden and installed on the outer wall of the insertion rod 11, resulting in the pry plate 13 affecting the insertion rod 11 to pass through the through hole on the movable ring 17 during later use. After the insertion rod 11 passes through the through hole on the movable ring 17, the pry plate 13 can be rotated and unfolded and fit the movable ring 17 through the torsion spring, 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, and two fixed blocks 15 are also fixedly installed on the right side of the insertion rod 11. The fixed block 15 fits with the linkage bar 14 after rotating with the rotating shaft 12, so that the range of movement of the pry plate 13 can be limited.

[0033] A positioning ring 16 and a plurality of L-shaped connecting blocks 19 are fixedly installed on the outer wall of the traction wheel 3, and the L-shaped connecting blocks 19 are all located on the left side of the positioning ring 16, and the positioning ring 16 is provided with a plurality of through holes, and connecting rods 18 are movably installed in the through holes on the plurality of positioning rings 16, and a movable ring 17 is commonly connected to the left side of the plurality of connecting rods 18, and the movable ring 17 is provided with a plurality of through holes matching the diameter of the insertion rod 11, and a fixed frame 20 is fixedly installed on the L-shaped connecting blocks 19, and a clamping plate 21 is movably installed on the inner frame of the fixed frame 20, and the clamping plate 21 is movably installed on the inner frame of the fixed frame 20. The plate 21 is L-shaped, and the short head of the locking plate 21 is connected to the L-shaped connecting block 19 by a reset spring 32. The side walls of the triangular guide plate 8 and the locking plate 21 that are close to each other are provided with inclined surfaces that can fit each other. When the L-shaped sliding plate 5 drives the triangular guide plate 8 to rotate, the inclined surface on the triangular guide plate 8 will contact the inclined surface on the locking plate 21 during the rotation process, and push the locking plate 21 to move to the right during the continuous movement of the triangular guide plate 8. The triangular guide plate 8 can fit into the L-shaped connecting block 19 during the rotation process to stop rotating.

[0034] After the traction wheel 3 is inserted into the insertion groove on the output shaft 2, the triangular guide plate 8 is controlled to slide in the circular groove on the fixed ring 4, so that the triangular guide plate 8 can follow the L-shaped sliding plate 5 to move and contact the engaging plate 21 during the movement, pushing the engaging plate 21 to move to the right. After the engaging plate 21 rotates to fit the L-shaped connecting block 19, it is prompted that the L-shaped sliding plate 5 has moved into place, and then the connecting rod 18 is pushed to the left to pass the insertion rod 11 on the mounting table 9 through the through hole on the movable ring 17. At this time, the rotating shaft 12 is rotated autonomously by the torsion spring, so that the pry plate 13 and the linkage bar 14 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 movable ring 17 from continuing to move.

[0035] A mounting ring 22 is movably mounted on the outer wall of the output shaft 2, and a plurality of L-shaped connecting plates 25 are fixedly mounted on the outer wall of the mounting ring 22. A positioning frame 26 is fixedly mounted on the right side of the L-shaped connecting plate 25, and the inner frame width of the positioning frame 26 is the same as the width of the L-shaped sliding plate 5. This facilitates the L-shaped sliding plate 5 to slide in the circular groove on the fixed ring 4 after the positioning frame 26 is fitted to the outer wall of the L-shaped sliding plate 5, so that the insertion rod 11 cannot be inserted into the movable ring 17. The positioning frame 26 fits the L-shaped sliding plate 5, so that after the L-shaped sliding plate 5 is moved into place, the positioning frame 26 can fit the outer wall of the L-shaped sliding plate 5 to limit the L-shaped sliding plate 5 from continuing to rotate.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] 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.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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 mounted on the traction machine, and a traction sheave mounted on the output shaft for easy installation or removal, characterized in that: The traction device also includes: A fixed ring, the fixed ring is sleeved on the outer wall of the output shaft, a plurality 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 plates, so as to ensure that the plurality of L-shaped sliding plates can move synchronously, connecting plates are installed on the L-shaped sliding plates, triangular guide plates and mounting tables are fixedly installed on the connecting plates, a linkage ring is commonly connected between the plurality of mounting tables, a plug-in rod is fixedly installed on the mounting table, two rotating shafts are rotatably installed on the plug-in rod, a pry plate and a linkage bar are arranged on the outer wall of the rotating shaft, and two fixing blocks are also fixedly installed on the plug-in rod, so as to limit the linkage bar from continuing to move after being fitted with the linkage bar; A positioning ring, which is fixedly sleeved on the outer wall of the traction wheel, and a plurality of connecting rods are movably installed on the positioning ring, and a movable ring is commonly connected to the plurality of connecting rods. The movable ring is provided with a plurality of through holes matching the diameter of the plug-in rods. The plug-in rod can pass through the through holes on the movable ring, and then extend out to contact the movable ring through the pry plate following the rotation of the rotating shaft, so that the output shaft and the traction wheel can be connected as a whole.

2. The traction device for an elevator according to claim 1, characterized in that: A plurality of L-shaped connecting blocks are fixedly mounted on the outer wall of the traction wheel, and a fixing frame is fixedly mounted on each of the L-shaped connecting blocks, and a clamping plate is movably mounted in the fixing frame. The clamping plate and the L-shaped connecting block are connected by a reset spring. The triangular guide plate follows the L-shaped sliding plate to slide and fit the L-shaped connecting block and then stops moving. At this time, the reset spring contracts so that the clamping plate can fit the triangular guide plate, which is used to prompt that the triangular guide plate has been installed in place.

3. The traction device for an elevator according to claim 1, characterized in that: A mounting ring is movably mounted on the outer wall of the output shaft, and a plurality of L-shaped connecting plates are fixedly mounted on the outer wall of the mounting ring. Positioning frames are fixedly mounted on the L-shaped connecting plates, and the inner frame width of the positioning frames is the same as the width of the L-shaped sliding plate. The positioning frame can be movably fitted on the outer wall of the L-shaped sliding plate to facilitate limiting the further rotation of the L-shaped sliding plate.

4. The traction device for an elevator according to claim 3, characterized in that: A telescopic connecting rod is fixedly installed on the mounting ring, and the telescopic connecting rod consists 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. The side of the cross bar away from the telescopic rod is fixedly connected to the fixing ring, and the side of the telescopic rod away from the cross bar is fixedly connected to the mounting ring. The fixing ring and the mounting ring are connected by a plurality of connecting springs. The connecting springs and the telescopic connecting rod cooperate to facilitate the mounting ring to move smoothly.

5. The traction device for an elevator according to claim 3, characterized in that: A plurality of convex plates are fixedly mounted on the outer wall of the output shaft, and through holes are provided on the convex plates, and mounting rods are movably inserted in the through holes, and two grooves are provided on the outer wall of the mounting rods, and rotating baffles are rotatably mounted in the grooves. After the mounting rod passes through the convex plate, the rotating baffle is rotated out of the groove and fits the convex plate, thereby limiting the movement of the mounting ring.

6. The traction device for an elevator according to claim 5, characterized in that: A plurality of limiting rings are movably sleeved on the outer wall of the installation rod, and the limiting rings and the fixing rings are connected with each other through a plurality of connecting cross bars.

7. The traction device for an elevator according to claim 1, characterized in that: 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.

8. The traction device for an elevator according to claim 1, characterized in that: 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.

9. The traction device for an elevator according to claim 1, characterized in that: 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.

10. The traction device for an elevator according to claim 9, characterized in that: 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.

11. The traction device for an elevator according to claim 1, characterized in that: 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.

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