Frame machining tool for elevator hoist machine

Abstract

The application provides a machine frame machining tool for an elevator traction machine, which comprises clamping assemblies arranged on both sides of a bearing shell for clamping the annular outer wall and the rectangular outer wall of the machine frame, so as to stably clamp machine frames with different structures. The clamping mechanism in the first clamping assembly is provided with at least two radially movable clamping points, and the spacing between the two clamping points can be adjusted according to the change of the diameter of the annular outer wall of the machine frame. When the diameter of the annular outer wall of the machine frame increases, the two clamping points are close to each other to improve the concentration of the clamping force and enhance the radial constraint ability of the large-size machine frame; when the diameter of the annular outer wall of the machine frame decreases, the two clamping points are away from each other to improve the support effect and limiting ability of the small-size machine frame. Through the above arrangement, the clamping mechanism can form reasonable contact positions and stress states for machine frames with different specifications, improve the clamping stability and reliability, and reduce the possibility of deviation, shaking or rotation of the machine frame during clamping.

Description

Technical Field

[0001] This invention relates to the field of clamping in machining, specifically to tooling for machining the frame of an elevator traction machine. Background Technology

[0002] The elevator traction machine is the core component of the elevator drive system. Its frame is used to install functional components such as the motor, brake, and traction sheave, and it also bears the responsibility of supporting the entire machine and transmitting loads. In order to ensure the assembly accuracy between the various functional components, the inner walls at both ends of the frame usually need to be machined by turning, boring, drilling, etc., to form mounting holes, positioning surfaces, and mating structures that meet the requirements.

[0003] Some existing elevator traction machine frames have a slender structure with significant differences in shape at both ends. One end has a rectangular outer wall structure, while the other end has a ring-shaped outer wall structure. Due to the overall length of the frame, when machining the inner walls or internal installation areas at both ends of the frame, it is usually necessary to clamp and position both ends of the frame separately to ensure the stability and machining accuracy of the frame during the machining process.

[0004] However, compared to rectangular outer wall structures, which can be stably clamped using planar fixtures or jaws, annular outer wall structures are more difficult to clamp. Especially when the diameter of the annular outer wall varies for different frame sizes, traditional clamping structures are often only suitable for specific size ranges, requiring fixture replacement or readjustment of the clamping mechanism before use. This not only increases preparation time but also easily leads to uneven force distribution and unstable positioning due to improper clamping positions. During machining, the frame may also shift, shake, or rotate, affecting machining accuracy and quality.

[0005] Therefore, how to achieve stable clamping of the annular outer wall of the elevator traction machine frame of different specifications, and improve the clamping adaptability and positioning reliability, has become a technical problem that urgently needs to be solved by those skilled in the art.

[0006] Therefore, tooling for machining the frame of an elevator traction machine is provided to address the above issues. Summary of the Invention

[0007] This invention provides a frame processing fixture for elevator traction machines to solve the problems of existing elevator traction machine frame clamping process, such as difficulty in adapting to frames of different diameters, uneven stress, unstable positioning, and insufficient clamping reliability.

[0008] The present invention solves the above-mentioned technical problems through the following technical solutions: The present invention provides a frame processing fixture for an elevator traction machine, including a bearing shell. The bearing shell has two opposite side walls, each with a mounting slot for the frame to enter and exit. One mounting slot is provided with a first clamping component, and the other mounting slot is provided with either a first clamping component or a second clamping component. The first clamping assembly is used to clamp the annular outer wall of the frame. The first clamping assembly includes a positioning ring fixedly disposed on the periphery of the corresponding mounting slot of the bearing shell. The positioning ring is provided with a plurality of clamping mechanisms distributed along the circumferential direction. Each clamping mechanism includes at least two clamping points for abutting against the annular outer wall of the frame, and each clamping point is radially movable relative to the frame axis so that the clamping mechanism can adjust the distance between each clamping point according to the diameter of the corresponding annular outer wall of the frame; the larger the diameter of the annular outer wall of the frame, the smaller the distance between each clamping point, and the smaller the diameter of the annular outer wall of the frame, the larger the distance between each clamping point. The second clamping assembly is used to clamp the rectangular outer wall of the frame.

[0009] In this technical solution, the second clamping assembly includes a reference plate, which is fixed on the outer wall of the bearing shell on one side of the bottom of the corresponding mounting slot, and the top of the reference plate is used to place the bottom surface of the corresponding rectangular outer wall of the frame. The top and two sides of the reference plate are respectively provided with an upper fixing part and two side fixing parts for abutting and fixing the other three surfaces of the corresponding rectangular outer wall, and the two side fixing parts are symmetrically arranged.

[0010] The side fixing part includes a mounting block fixed to one side of the top of the reference plate. The mounting block is provided with a second fixing screw distributed in a transverse direction. The second fixing screw passes through the mounting block and is connected to the mounting block by thread engagement.

[0011] In this technical solution, the upper fixing part includes a mounting plate, which is fixed on the outer wall of the bearing shell at the top of the corresponding mounting slot. A sliding cavity is provided inside the mounting plate, and a limiting plate is slidably connected inside the sliding cavity. The top of the limiting plate protrudes from the bottom of the mounting plate. The top of the limiting plate is connected to a first fixing screw distributed vertically. The first fixing screw passes through the top side wall of the sliding cavity, and the first fixing screw is connected to the mounting plate by thread engagement.

[0012] In this technical solution, the first clamping assembly also includes an annular drive mechanism. The drive mechanism is sleeved around the periphery of the positioning ring and can rotate. The rotating drive mechanism pushes the clamping mechanism to move towards one side of the annular outer wall of the frame until the clamping mechanism abuts against the annular outer wall. The drive mechanism is connected to the outer wall of the carrier shell via a guide assembly.

[0013] In this technical solution, the clamping mechanism is set inside the fixed through groove on the positioning ring. The clamping mechanism includes a prepositioning shaft, which is slidably connected to the boss surface on the inner wall of the fixed through groove along the radial direction of the positioning ring, and a second spring is provided at the sliding connection. The prepositioning shaft is provided with symmetrically distributed fixing components on both sides, and the fixing components are connected to the fixing column by transmission. When the prepositioning shaft is pushed by the drive mechanism to move towards the circular side wall, it drives the clamping points on the two fixing components to move obliquely to both sides until the clamping points on the two fixing components abut against the outer wall of the ring. The moving speed of the clamping points of the fixing components is greater than the moving speed of the prepositioning shaft.

[0014] Specifically, at least two arc-shaped guide plates are sleeved on the surface of the prepositioning shaft, the guide plates are fixed on the boss, and a second spring is sleeved on the surface of the prepositioning shaft, with the two ends of the second spring fixed on the guide plates and the prepositioning shaft respectively.

[0015] In this technical solution, the fixing component includes a transmission component and two symmetrically arranged fixing plates. Both fixing plates are inclined to the side away from the prepositioning axis and are slidably connected to the prepositioning axis or to a structure that is fixed relative to the position of the prepositioning axis. The transmission component is connected to the two fixing plates to drive the two fixing plates to move synchronously closer to or away from the annular outer wall of the frame.

[0016] In this technical solution, the transmission component includes a support frame, which is fixed on the outer wall of the prepositioning shaft. A rotatable support horizontal shaft is installed on the vertical outer wall of the support frame. A drive gear is sleeved and fixed in the central area of ​​the support horizontal shaft. The drive gear meshes with a vertically arranged drive rack, and the position of the drive rack relative to the moving drive gear is fixed. Both ends of the bearing horizontal shaft are fitted with transmission gears, and the two transmission gears are respectively connected to the transmission racks on the two fixed plates. The diameter of the drive gear is smaller than the diameter of the transmission gear.

[0017] Specifically, the two fixed plates are fixedly connected by a connecting plate, and a sliding sleeve is slidably fitted on the surface of the fixed plate. The sliding sleeve is fixed to the bearing frame or the prepositioning shaft by a rod.

[0018] In this technical solution, the driving mechanism includes a ring-shaped driving part, which is connected to the prepositioning shaft via a corresponding transmission part. The drive unit includes a first drive ring, which is sleeved on the outside of the positioning ring and coaxially arranged with the positioning ring. The positioning ring can rotate on the outer wall of the bearing shell. The number of transmission parts is the same as the number of prepositioning shafts and they are set one by one. The transmission part includes a first transmission curved plate, which is used to overlap with the end of the prepositioning shaft and is fixedly set on the inner ring side wall of the positioning ring. The inner curved surface of the first transmission plate gradually changes from one end to the other along the prepositioning axis, and the distance near the center of the positioning ring gradually decreases.

[0019] In this technical solution, the drive unit and the transmission unit also include a second drive ring and a second transmission curved plate, respectively. A pusher is attached to the outer side of two fixed plates located on the same side of the prepositioning shaft, and the pusher can be pressed onto the corresponding fixed plate end by the rotating second drive ring and the second transmission curved plate. There are two second drive rings, and the two second drive rings are located on both sides of the first drive ring. The two second drive rings are slidably connected to the annular outer walls on both sides of the first drive ring, and the first drive ring and the second drive ring are of the same size.

[0020] This technical solution also includes multiple guide components arranged in a ring array to guide the rotation of the first drive ring and the second drive ring. Each guide component includes three arc-shaped guide shells, which are respectively fixed on the inner ring sidewalls of the first drive ring and the two second drive rings. The guide shells are provided with arc-shaped guide slots, which are coaxially arranged with the positioning rings. The guide slots on the three guide shells are all penetrated by the same positioning post, which is slidably connected to the positioning post. The positioning post is distributed along the axial direction of the positioning ring and fixed on the outer wall of the bearing shell.

[0021] In this technical solution, the first drive ring and the two second drive rings are provided with a handle that can simultaneously drive the first drive ring and the second drive ring to rotate, and can also drive the two second drive rings to rotate independently. The handle includes a first lever and a second lever that are respectively fixed on the outer ring sidewall of the first drive ring and the outer ring sidewall of the second drive ring. The first drive ring and the second drive ring are driven to rotate by the first lever and the second lever respectively. The outer wall of the first lever is fitted with a first synchronization plate, which is set on one side of the first lever. The two sides of the first synchronization plate overlap the outer walls of the two second levers. The two corresponding second levers are connected to each other through the second synchronization plate, and the second synchronization plate overlaps the outer wall of the other side of the first lever.

[0022] Based on common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain various preferred embodiments of the present invention.

[0023] The positive and progressive effects of this invention are as follows: By setting two clamping points with adjustable spacing, the distance between the two clamping points can be varied according to the diameter of the frame's annular outer wall. When the diameter of the frame's annular outer wall increases, the two clamping points move closer to each other to increase the concentration of clamping force, enabling the clamping mechanism to apply a stable limiting effect on the frame within a more concentrated area, thereby enhancing the radial constraint capability for large-sized frames. When the diameter of the frame's annular outer wall decreases, the two clamping points move further apart to increase the range of clamping force, allowing the clamping mechanism to cover a larger contact area of ​​the frame's annular outer wall, thereby improving the support effect and limiting capability for small-sized frames.

[0024] Through the above settings, the clamping mechanism can automatically form a more reasonable contact position and force state according to the shape characteristics of frames of different diameters. This avoids problems such as excessive local force or insufficient limiting effect caused by unreasonable contact position, allowing the clamping force to act more effectively on the annular outer wall of the frame. At the same time, frames of different specifications can obtain relatively stable support and limiting effects, which helps to reduce the possibility of frame offset, shaking or rotation during clamping, improves the stability and reliability of the frame after clamping, and provides a guarantee for the smooth progress of subsequent testing, assembly or processing procedures. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 For the present invention Figure 1 A structural diagram from another perspective; Figure 3 For the present invention Figure 1 A front view structural diagram; Figure 4 For the present invention Figure 3 Schematic diagram of the cross-sectional structure at point AA; Figure 5 For the present invention Figure 4 A magnified schematic diagram of the structure at point I; Figure 6 For the present invention Figure 4 A magnified schematic diagram of the structure at point J; Figure 7 This is a schematic diagram showing the positional relationship between the positioning ring, guide assembly, fixing assembly, and transmission part of the present invention. Figure 8 For the present invention Figure 7 A structural diagram from another perspective; Figure 9 This is a schematic diagram of the structure of the fixing component of the present invention installed inside the fixing through groove; Figure 10 This is a schematic diagram showing the positional relationship between the prepositioning shaft, the fixing component, and the transmission part of the present invention. Figure 11 This is a schematic diagram showing the positional relationship between the prepositioning shaft and the fixing component of the present invention; Figure 12 For the present invention Figure 11 A schematic diagram of the structure viewed from below; Figure 13 For the present invention Figure 11 A top-view structural diagram; Figure 14 For the present invention Figure 13 Schematic diagram of the cross-sectional structure at BB; Figure 15 This is a schematic diagram of the positioning ring of the present invention; Figure 16 This is a schematic diagram of the structure of the handle part of the present invention; Figure 17 For the present invention Figure 16 A structural diagram from another perspective.

[0026] Explanation of reference numerals in the attached figures 101. Support housing; 1011. Inspection port; 102. First clamping assembly; 103. Second clamping assembly; 1031. Reference plate; 1. Positioning ring; 11. Fixing through groove; 12. Boss; 2. Drive unit; 21. First drive ring; 22. Second drive ring; 3. Guide assembly; 31. Guide housing; 32. Positioning post; 4. Lifting handle; 41. First lever; 42. Second lever; 43. First synchronization plate; 44. Handle; 45. Second synchronization plate; 5. Transmission unit; 51. First transmission curved plate; 52. Second transmission curved plate; 6. Prepositioning shaft; 61. Guide plate; 62. Moving rod; 63. First spring; 64. First transmission ball; 7. Fixing component; 71. Support frame; 72. Supporting horizontal shaft; 73. Drive gear; 74. Drive rack; 75. Transmission gear; 76. Fixing plate; 761. Limiting block; 762. Abutting rod; 763. Connecting plate; 77. Pushing component; 771. Transmission frame; 772. Guide shaft; 773. Outer sleeve; 774. Second transmission ball; 78. Sliding sleeve; 8. Upper fixing part; 81. Mounting plate; 811. Sliding cavity; 82. Limiting plate; 821. Slider; 83. First fixing screw; 9. Side fixing part; 91. Mounting block; 92. Second fixing screw. Detailed Implementation

[0027] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments.

[0028] like Figure 1 and Figure 2 As shown, the frame processing fixture for elevator traction machine includes a bearing shell 101. The bearing shell 101 has two opposite side walls with mounting slots for the frame to enter and exit. One mounting slot is provided with a first clamping component 102, and the other mounting slot is provided with either the first clamping component 102 or the second clamping component 103. The first clamping assembly 102 is used to clamp the annular outer wall of the frame. The first clamping assembly 102 includes a positioning ring 1 fixedly disposed on the periphery of the mounting slot corresponding to the bearing shell 101. The positioning ring 1 is provided with a plurality of clamping mechanisms distributed along the circumferential direction. Each clamping mechanism includes at least two clamping points for abutting against the annular outer wall of the frame, and each clamping point is radially movable relative to the frame axis so that the clamping mechanism can adjust the distance between each clamping point according to the diameter of the corresponding annular outer wall of the frame; the larger the diameter of the annular outer wall of the frame, the smaller the distance between each clamping point, and the smaller the diameter of the annular outer wall of the frame, the larger the distance between each clamping point. The second clamping assembly 103 is used to clamp the rectangular outer wall of the frame.

[0029] The surface of the bearing shell 101 is provided with an inspection port 1011.

[0030] Example 1 In this embodiment, as Figure 2 As shown, the second clamping assembly 103 includes a reference plate 1031, which is fixed on the outer wall of the bearing shell 101 on one side of the bottom of the corresponding mounting slot, and the top of the reference plate 1031 is used to place the bottom surface of the corresponding rectangular outer wall of the frame. The top and two sides of the reference plate 1031 are respectively provided with an upper fixing part 8 and two side fixing parts 9 for abutting and fixing the other three surfaces of the corresponding rectangular outer wall, and the two side fixing parts 9 are symmetrically arranged.

[0031] Place the rectangular outer wall of the frame on the reference plate 1031, then fix the two vertical surfaces of the rectangular outer wall with the two side fixing parts 9, and fix the upper surface of the rectangular outer wall with the upper fixing part 8.

[0032] Specifically, the side fixing part 9 includes a mounting block 91 fixed to one side of the top of the reference plate 1031. The mounting block 91 is provided with a second fixing screw 92 distributed in a transverse direction. The second fixing screw 92 passes through the mounting block 91 and is connected to the mounting block 91 by thread engagement.

[0033] like Figure 5As shown, the upper fixing part 8 includes a mounting plate 81, which is fixed on the outer wall of the bearing shell 101 at the top of the corresponding mounting slot. A sliding cavity 811 is provided inside the mounting plate 81, and a limiting plate 82 is slidably connected inside the sliding cavity 811. The top of the limiting plate 82 protrudes from the bottom of the mounting plate 81. The top of the limiting plate 82 is connected to a first fixing screw 83 distributed vertically. The first fixing screw 83 passes through the top side wall of the sliding cavity 811, and the first fixing screw 83 is connected to the mounting plate 81 by thread engagement.

[0034] A lever is fixed on the outer wall of the limiting plate 82 protruding from the bottom of the mounting plate 81. The limiting plate 82 is slidably connected to the sliding cavity 811 via the slider 821.

[0035] When fixing the rectangular outer wall of the frame, first insert the end of the frame with the annular outer wall into the housing through the mounting slot where the second clamping assembly 103 is located, and then make the annular outer wall located at another mounting slot.

[0036] First, the annular outer wall of the frame is clamped by the first clamping assembly 102 to fix the end of the frame with the annular outer wall. During the process of placing the frame into the carrier housing 101, the limiting plate 82 is first moved upwards by the lever, so that the bottom of the limiting plate 82 is higher than the top of the rectangular outer wall. After the frame enters the carrier housing 101, the lever is released, allowing the limiting plate 82 to overlap the top side wall of the rectangular outer wall.

[0037] At this time, the bottom surface of the rectangular outer wall of the frame is placed on the top side wall of the base plate, and then the second fixing screws 92 on the side fixing parts 9 on both sides are rotated so that the ends of the two second fixing screws 92 abut against the vertical outer sides of the rectangular outer wall respectively.

[0038] Then, the first fixing screw 83 is rotated so that the end of the first fixing screw 83 abuts the limiting plate 82 against the top side wall of the rectangular outer wall. This completes the clamping of the rectangular outer wall of the frame.

[0039] It should be noted that the second clamping component 103 in this embodiment is mainly used for clamping the rectangular outer wall of the frame, and its specific structure is not the focus of this application's improvement. Any existing clamping structure capable of clamping, positioning, and limiting the rectangular outer wall of the frame can replace the second clamping component 103 in this embodiment. For example, using existing claw-type, pressure plate-type, clamping block-type, clamping clamp-type, or other clamping mechanisms with the same clamping function can meet the usage requirements of this application without affecting the implementation of the technical solution of this application. Therefore, those skilled in the art can select or replace the specific structure of the second clamping component 103 according to the specific structural form of the frame and actual usage requirements, and all such replacements should fall within the protection scope of this application.

[0040] Example 2 like Figure 1 and Figure 5 As shown, the first clamping assembly 102 also includes an annular drive mechanism. The drive mechanism is sleeved around the periphery of the positioning ring 1 and can rotate. The rotating drive mechanism pushes the clamping mechanism to move towards one side of the annular outer wall of the frame until the clamping mechanism abuts against the annular outer wall. The drive mechanism is connected to the outer wall of the carrier shell 101 via the guide assembly 3.

[0041] Example 3 like Figure 7 and Figure 8 As shown, the clamping mechanism is set inside the fixed through groove 11 on the positioning ring 1. The clamping mechanism includes a prepositioning shaft 6, which is slidably connected to the surface of the boss 12 on the inner wall of the fixed through groove 11 along the radial direction of the positioning ring 1. A second spring is provided at the sliding connection. The prepositioning shaft 6 is provided with symmetrically distributed fixing components 7 on both sides, and the fixing components 7 are connected to the fixing column by transmission. When the prepositioning shaft 6 is pushed by the driving mechanism to move towards the circular side wall, it drives the clamping points on the two fixing components 7 to move obliquely to both sides until the clamping points on the two fixing components 7 abut against the outer wall of the ring. The moving speed of the clamping points of the fixing components 7 is greater than the moving speed of the prepositioning shaft 6.

[0042] Specifically, at least two arc-shaped guide plates 61 are sleeved on the surface of the prepositioning shaft 6, the guide plates 61 are fixed on the boss 12, and a second spring is sleeved on the surface of the prepositioning shaft 6, with the two ends of the second spring fixed on the guide plate 61 and the prepositioning shaft 6 respectively.

[0043] The second spring stores the elastic potential energy of the prepositioning shaft 6 after it moves and resets.

[0044] The fixing component 7 includes a transmission component and two symmetrically arranged fixing plates 76. Both fixing plates 76 are inclined to the side away from the prepositioning shaft 6 and are slidably connected to the prepositioning shaft 6 or to a structure that is fixed relative to the position of the prepositioning shaft 6. The transmission component is connected to the two fixing plates 76 to drive the two fixing plates 76 to move synchronously toward or away from the annular outer wall of the frame.

[0045] In the initial state, in the radial direction of the positioning ring 1, the corresponding end of the prepositioning shaft 6 protrudes from the clamping point on the corresponding end of the fixing plate 76.

[0046] The corresponding end of the fixing plate 76 is the clamping point.

[0047] Furthermore, a limiting block 761 is fixed on the corresponding end of the fixing plate 76, and the limiting block 761 is the clamping point.

[0048] like Figures 9-14As shown, the transmission component includes a support frame 71, which is fixed on the outer wall of the prepositioning shaft 6. A rotatable support horizontal shaft 72 is installed on the vertical outer wall of the support frame 71. A drive gear 73 is sleeved and fixed in the central area of ​​the support horizontal shaft 72. The drive gear 73 meshes with a vertically arranged drive rack 74, and the position of the drive rack 74 is fixed relative to the moving drive gear 73. Both ends of the bearing horizontal shaft 72 are fitted with transmission gears 75, and the two transmission gears 75 are respectively meshed with the transmission racks on the two fixed plates 76. The diameter of the drive gear 73 is smaller than the diameter of the transmission gear 75. Because the diameter of the drive gear 73 is smaller than the diameter of the transmission gear 75, the moving speed of the fixed plate 76 is greater than the moving speed of the prepositioning shaft 6, so that the end of the fixed plate 76 can fully abut against the annular outer wall.

[0049] Preferably, a first transmission ball 64 that engages with the drive mechanism is fixed to the top of the prepositioning shaft 6.

[0050] Specifically, the two fixed plates 76 are fixedly connected by a connecting plate 763, and the surface of the fixed plate 76 is connected to a sliding sleeve 78. The sliding sleeve 78 is fixed to the bearing frame 71 or the prepositioning shaft 6 by a rod.

[0051] By sliding the fixed plate 76 on the sliding sleeve 78, the clamping point on the clamping mechanism moves obliquely to both sides.

[0052] When the drive mechanism drives the prepositioning shaft 6 to move towards one side of the annular outer wall of the frame, the prepositioning shaft 6 drives the support frame 71, the support horizontal shaft 72, and the drive gear 73 to move synchronously. Since the drive gear 73 is engaged with the fixedly mounted drive rack 74, the drive rack 74 remains in a fixed position as the drive gear 73 moves with the prepositioning shaft 6. The drive gear 73 rolls along the drive rack 74 and rotates. After rotating, the drive gear 73 drives the support horizontal shaft 72 to rotate synchronously, which in turn drives the transmission gears 75 located at both ends of the support horizontal shaft 72 to rotate synchronously.

[0053] As the transmission gear 75 rotates, the transmission rack meshing with the transmission gear 75 is driven to move, thereby pushing the fixed plate 76 to slide along the guide direction of the sliding sleeve 78. Since the fixed plate 76 is arranged at an angle relative to the prepositioning shaft 6, the fixed plate 76 unfolds obliquely to the side away from the prepositioning shaft 6 during the movement, so as to gradually approach the annular outer wall of the frame.

[0054] Furthermore, by setting the diameter of the transmission gear 75 to be larger than that of the drive gear 73, the pitch circle circumference of the transmission gear 75 is greater than that of the drive gear 73 when the bearing horizontal shaft 72 rotates, thereby enabling the transmission rack and the fixed plate 76 to obtain a movement speed greater than the moving speed of the prepositioned shaft 6. Therefore, the fixed plate 76 can fully abut against the annular outer wall of the frame.

[0055] Example 4 Based on Example 2, this example is derived, wherein the prepositioning shaft 6 is a rigid column with a fixed length or an integral column that can spring back after expansion and contraction.

[0056] When the prepositioning shaft 6 is a rigid column with a fixed length, before the prepositioning shaft 6 contacts the annular outer wall of the frame, the end of the fixing plate 76 abuts against the annular outer wall, and the drive rack 74 is fixed on the inner wall of the fixing through groove 11.

[0057] like Figure 5 and Figure 10 As shown, when the prepositioning shaft 6 is a shaft that can spring back after extension and retraction, the prepositioning shaft 6 includes a column and a movable rod 62 that is slidably connected to the inner cavity of one end of the column. A first spring 63 is sleeved on the surface of the movable rod 62, and the two ends of the first spring 63 are fixed to the movable rod 62 and the column, respectively.

[0058] The guide plate 61 is fitted onto the outer peripheral surface of the prepositioning shaft 6. It should be understood that the ratio of the length of the prepositioning shaft 6 to the length of the moving rod 62, as well as the height difference between the bottom end of the fixed plate 76 and the bottom end of the moving rod 62, in the accompanying drawings are merely schematic drawings for the purpose of illustrating the technical solution of this application. Their specific dimensions and proportions do not constitute a limitation on the scope of protection of this application. Those skilled in the art can adjust the relevant dimensional parameters according to the actual working conditions.

[0059] Furthermore, the guide plate 61 is fitted onto the surface of the column in an area where it does not interfere with the movement of the support frame 71.

[0060] In one aspect, when the drive rack 74 is fixed to the inner wall of the fixed through groove 11, the support frame 71 is fixed to the column.

[0061] When the prepositioning shaft 6 moves, the fixing plate 76 also moves synchronously until the end of the fixing plate 76 abuts against the annular outer wall of the frame.

[0062] On the other hand, when the drive rack 74 is fixedly connected to the end of the moving rod 62 by a rod, the support frame 71 is fixedly installed on the outer peripheral surface of the column.

[0063] In the initial state, before the bottom of the moving rod 62 contacts the annular outer wall of the frame, there is no relative movement between the drive gear 73 and the drive rack 74. At this time, the fixed plate 76 moves down synchronously with the prepositioning shaft 6 to move as a whole closer to the frame.

[0064] When the bottom end of the moving rod 62 abuts against the annular outer wall of the frame, the moving rod 62 stops moving downward. Under the action of the drive mechanism, the column continues to move relative to the moving rod 62, so that the overall equivalent length of the prepositioning shaft 6 gradually shortens.

[0065] During this process, the column drives the support frame 71 to move down synchronously, so that the drive gear 73 rolls relative to the drive rack 74 which is fixed in position. The drive gear 73 then rotates and further drives the transmission gear 75 to rotate synchronously.

[0066] The rotation of the transmission gear 75 drives the fixed plate 76 to move along the oblique guide structure toward the annular outer wall of the frame until the end of the fixed plate 76 abuts against the annular outer wall, thereby completing the clamping and positioning of the frame.

[0067] During the above process, the first spring 63 is compressed and stores elastic potential energy to push the moving rod 62 to reset after the drive is released.

[0068] In addition, after passing over the top of the support frame 71, the rod is connected between the drive rack 74 and the moving rod 62 to avoid interfering with the downward movement of the support frame 71 and the transmission assembly during the movement, thereby ensuring the smoothness of the overall transmission process. This structure is not shown separately in the attached drawings.

[0069] By setting the movable rod 62 to make contact with and move relative to the column in stages, the clamping process is divided into an initial synchronous approach stage and a relative driving stage after contact. Before the movable rod 62 contacts the outer wall of the frame, all components move synchronously to achieve rapid approach; after the movable rod 62 contacts the frame, the relative movement of the column triggers the transmission mechanism to move the fixed plate 76 from the inside to the outside at an angle and finally abut against the outer wall of the frame, thereby achieving phased clamping.

[0070] This structure transitions the clamping process from coarse positioning to fine positioning, improving the continuity and controllability of clamping actions. Furthermore, the use of elastic elements enables reset and energy storage, enhancing the reliability of the structure for repeated use. Simultaneously, the lever avoidance structure ensures uninterrupted transmission, reducing the risk of mechanical interference and improving overall operational stability and clamping reliability.

[0071] Example 5 like Figure 5 As shown, the drive mechanism includes a ring-shaped drive unit 2, which is connected to the prepositioning shaft 6 via a corresponding transmission unit 5. The drive unit 2 includes a first drive ring 21, which is sleeved on the outside of the positioning ring 1 and coaxially arranged with the positioning ring 1. The positioning ring 1 can rotate on the outer wall of the bearing shell 101. The number of transmission parts 5 is the same as the number of prepositioning shafts 6 and they are arranged in a one-to-one correspondence. The transmission part 5 includes a first transmission curved plate 51, which is used to overlap with the end of the prepositioning shaft 6 and is fixedly set on the inner ring side wall of the positioning ring 1. The inner curved surface of the first transmission plate 51 gradually changes from one end to the other along the prepositioning shaft 6, and the distance near the center of the positioning ring 1 gradually decreases.

[0072] The rotation of the first drive ring 21 drives the first transmission curved plate 51, which is fixedly connected to it, to rotate synchronously. During the rotation, the inner curved surface of the first transmission curved plate 51 contacts the first transmission ball 64 on the prepositioning shaft 6 and forms a transmission engagement, using the gradual change structure of the curved surface to provide continuous guidance to the first transmission ball 64.

[0073] As the first transmission curved plate 51 continues to rotate, the first transmission ball 64 rolls radially toward the center of the positioning ring 1 under the action of the curved surface, and drives the prepositioning shaft 6 to move synchronously toward the center side of the positioning ring 1, thereby realizing the transmission and conversion of displacement.

[0074] Example 6 This embodiment is derived based on Embodiment 5, such as... Figures 10-12 As shown, the drive unit 2 and the transmission unit 5 also include a second drive ring 22 and a second transmission curved plate 52, respectively. A pusher 77 is attached to the outer side of two fixed plates 76 located on the same side of the prepositioning shaft, and the pusher 77 can be pressed onto the end of the corresponding fixed plate 76 by the rotating second drive ring 22 and the second transmission curved plate 52.

[0075] There are two second drive rings 22, and the two second drive rings 22 are located on both sides of the first drive ring 21. The two second drive rings 22 are slidably connected to the annular outer walls on both sides of the first drive ring 21, and the first drive ring 21 and the second drive ring 22 are of the same size.

[0076] like Figure 5 As shown, one second drive ring 22 is connected to the outer wall of the bearing shell 101 and can be rotated relative to the outer wall of the bearing shell 101; the outer wall of the other second drive ring 22 extends radially toward the positioning ring 1 and forms an annular extension structure, which overlaps the outer ring side wall of the positioning ring 1 and is wrapped around the periphery of the positioning ring 1 by the corresponding second drive ring 22.

[0077] The rotational connection between the second drive ring 22 and the outer wall of the bearing shell 101 is achieved through a sliding connection via an annular groove and an arc-shaped slider 821. This sliding connection structure is a mature existing technology, and its specific structure and working process will not be further described in this application.

[0078] The second drive ring 22 and the first drive ring 21 are interconnected.

[0079] The inner ring sidewall of the second drive ring 22 is fixed with the same number of second transmission curved plates 52 as the pushers 77 and they correspond one-to-one. The second transmission curved plates 52 can overlap with the pushers 77, and the pushers 77 can move radially along the positioning ring 1.

[0080] The pusher 77 includes a transmission frame 771. One side plane of the transmission frame 771 can overlap with the end of the corresponding fixed plate 76, and the other side of the transmission frame 771 can overlap with the inner curved surface of the corresponding second transmission curved plate 52. A second transmission ball 774 is fixed on the end of the transmission frame 771 that overlaps with the inner curved surface of the second transmission curved plate 52, and an abutment rod 762 is fixed on the end of the fixed plate 76 that overlaps with the transmission frame 771.

[0081] The principle by which the second transmission curved plate 52 pushes the transmission frame 771 against the abutment plate at the end of the fixed plate 76 is the same as the principle by which the first transmission curved plate 51 pushes the prepositioning shaft 6 to move.

[0082] The surface of the transmission frame 771 is fixed with guide shafts 772 that are radially distributed along the positioning ring 1. The guide shafts 772 are slidably connected to the outer sleeve 773, and the outer sleeve 773 is fixed to the inner wall of the corresponding fixed side.

[0083] A third spring is sleeved on the guide shaft 772, and the two ends of the third spring are fixed on the guide shaft 772 and the outer sleeve 773 respectively. The elastic force of the third spring ensures that the corresponding surface of the push member 77 always overlaps with the abutment rod 762.

[0084] The sliding of the guide shaft 772 on the outer sleeve 773 provides guidance for the movement of the transmission frame 771.

[0085] When the first drive ring 21 rotates and pushes the limiting block 761 at the end of the fixed plate 76 against the annular outer wall of the frame, the first drive ring 21 rotates to its limit position. Then, the two second drive rings 22 rotate, and the second transmission curved plates 52 on the two second drive rings 22 push the pusher 77, so that the pusher 77 abuts against the abutment plate at the end of the fixed plate 76. This avoids the entire fixing assembly 7 being fixed only through the meshing between gears and racks, thus increasing the fixing effect of the fixing assembly 7. At this time, the second drive ring 22 rotates to its limit position.

[0086] Example 7 like Figure 1 , Figure 7 as well as Figure 8 As shown, it also includes multiple guide components 3 arranged in a ring array to guide the rotation of the first drive ring 21 and the second drive ring 22. The guide components 3 include three arc-shaped guide shells 31, and the three guide shells 31 are respectively fixed on the inner ring sidewalls of the first drive ring 21 and the two second drive rings 22. The guide shells 31 are provided with arc-shaped guide slots, and the guide slots are coaxially arranged with the positioning ring 1. The guide slots on the three guide shells 31 are all penetrated by the same positioning post 32. The guide slots are slidably connected to the positioning post 32. The positioning post 32 is distributed along the axial direction of the positioning ring 1 and is fixed on the outer wall of the bearing shell 101.

[0087] A locking bolt is threaded into the end of the positioning post 32. The locking bolt is screwed into the positioning post 32 and abuts against the outer wall of the second drive ring 22 on the side away from the bearing shell 101, pressing the first drive ring 21 and the second drive ring 22 against each other. At the same time, the first drive ring 21 and the second drive ring 22 are pressed against the outer wall of the bearing shell 101, thereby fixing the first drive ring 21 and the second drive ring 22 after rotation.

[0088] Alternatively, the first drive ring 21 and the second drive ring 22 can be locked or fixed using other existing technical means to limit their relative rotation and maintain their target working position. This fixing method is a conventional technique in the field and will not be described in detail here.

[0089] Example 8 As a preferred embodiment derived from Embodiments 5 and 6, such as Figure 1 , Figure 16 and Figure 17 As shown, the first drive ring 21 and the two second drive rings 22 are provided with a handle 4 that can simultaneously drive the first drive ring 21 and the second drive ring to rotate, and can also drive the two second drive rings 22 to rotate independently. The handle 4 includes a first lever 41 and a second lever 42 respectively fixed on the outer ring sidewall of the first drive ring 21 and the outer ring sidewall of the second drive ring 22. The first drive ring 21 and the second drive ring 22 are driven to rotate by the first lever 41 and the second lever 42 respectively. A first synchronization plate 43 is fixedly sleeved on the outer wall of the first lever 41. The two sides of the first synchronization plate 43 overlap the outer walls of the two second levers 42. The two corresponding second levers 42 are connected to each other through the second synchronization plate 45, and the second synchronization plate 45 overlaps the outer wall of the other side of the first lever 41.

[0090] Preferably, the positions of the first drive ring 21 and the second drive ring 22 after rotation can be fixed by fixing the first lever 41 and the second lever 42 after rotation, thereby restricting the first drive ring 21 and the second drive ring 22 from continuing to rotate relative to each other.

[0091] It should be noted that the cooperation and fixing method between the lever and the drive ring are conventional technical means in this field. The lever remains relatively stationary in the fixed state, while the rotation and locking of the drive ring are conventional mechanical locking structure implementation methods. The specific structure and implementation process will not be described in detail here.

[0092] During clamping, the extension tube is inserted into the end of the first lever 41 to push the first lever 41 to rotate. The first synchronization plate 43 pushes the two second levers 42 to rotate synchronously, thereby pushing the first drive ring 21 and the second drive ring 22 to rotate synchronously. When the limiting block 761 on the end of the fixed plate 76 abuts against the annular outer wall of the frame, the first lever 41 and the first drive ring 21 rotate to their limit positions. Then, keeping the position of the first lever 41 unchanged, the two second levers 42 are pushed to continue rotating by the handles 44 fixed on the two second levers 42, thereby pushing the second drive ring 22 and the second transmission curved plate 52 to rotate, so that the transmission frame 771 abuts against the abutment rod 762 of the fixed plate 76. At this time, the second drive ring 22 rotates to its limit position.

[0093] When removing the frame, the second lever 42 is reversed by pushing the handle 44. During the reversal of the second lever 42, the first lever 41 is pushed to reverse synchronously by the second synchronization plate 45.

[0094] The above process can be completed by two operators working together.

[0095] This invention is not limited to the embodiments described above. Any changes in shape or structure shall fall within the protection scope of this invention. The protection scope of this invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of this invention, but all such changes and modifications shall fall within the protection scope of this invention.

Claims

1. A frame processing fixture for an elevator traction machine, comprising a bearing shell (101), wherein two opposite side walls of the bearing shell (101) are provided with mounting slots for the frame to enter and exit, wherein a first clamping assembly (102) is provided at one of the mounting slots, and either the first clamping assembly (102) or the second clamping assembly (103) is provided at the other mounting slot; The first clamping assembly (102) is used to clamp the annular outer wall of the frame. The first clamping assembly (102) includes a positioning ring (1) fixedly disposed on the bearing shell (101) corresponding to the periphery of the mounting slot. The positioning ring (1) is provided with a plurality of clamping mechanisms distributed circumferentially. The first clamping assembly (102) is characterized in that: Each of the clamping mechanisms includes at least two clamping points for abutting against the annular outer wall of the frame, and each clamping point is arranged to move radially relative to the frame axis. The larger the diameter of the annular outer wall of the frame, the smaller the distance between the clamping points; the smaller the diameter of the annular outer wall of the frame, the larger the distance between the clamping points. The second clamping assembly (103) is used to clamp the rectangular outer wall of the frame.

2. The fixture for machining the frame of the elevator traction machine as described in claim 1, characterized in that: The second clamping assembly (103) includes a reference plate (1031), which is fixed on the outer wall of the bearing shell (101) on one side of the bottom of the corresponding mounting slot, and the top of the reference plate (1031) is used to place the bottom surface of the corresponding rectangular outer wall of the frame. The top and two sides of the reference plate (1031) are respectively provided with an upper fixing part (8) for abutting and fixing the other three sides of the corresponding rectangular outer wall, and the two side fixing parts (9) are symmetrically arranged.

3. The frame machining fixture for an elevator traction machine as described in claim 2, characterized in that: The side fixing part (9) includes a mounting block (91) fixed on one side of the top of the reference plate (1031). The mounting block (91) is provided with a second fixing screw (92) distributed in a transverse direction. The second fixing screw (92) passes through the mounting block (91) and is connected to the mounting block (91) by thread engagement. The upper fixing part (8) includes a mounting plate (81), which is fixed on the outer wall of the bearing shell (101) at the top of the corresponding mounting slot. A sliding cavity (811) is provided inside the mounting plate (811), and a limiting plate (82) is slidably connected inside the sliding cavity (811). The top of the limiting plate (82) protrudes from the bottom of the mounting plate (81). The top of the limiting plate (82) is connected to a first fixing screw (83) distributed vertically. The first fixing screw (83) penetrates the top side wall of the sliding cavity (811), and the first fixing screw (83) is connected to the mounting plate (81) by thread engagement.

4. The frame machining fixture for an elevator traction machine as described in claim 1, characterized in that: The first clamping assembly (102) further includes an annular drive mechanism, which is sleeved around the positioning ring (1) and can rotate. The rotating drive mechanism pushes the clamping mechanism to move toward one side of the annular outer wall of the frame until the clamping mechanism abuts against the annular outer wall. The drive mechanism is connected to the outer wall of the bearing shell (101) via a guide assembly (3).

5. The frame machining fixture for an elevator traction machine as described in claim 1, characterized in that: The clamping mechanism is set inside the fixed through groove (11) on the positioning ring (1). The clamping mechanism includes a prepositioning shaft (6). The prepositioning shaft (6) is slidably connected to the surface of the boss (12) on the inner wall of the fixed through groove (11) along the radial direction of the positioning ring (1). A second spring is provided at the sliding connection. The prepositioning shaft (6) is provided with symmetrically distributed fixing components (7) on both sides, and the fixing components (7) are connected to the fixing column by transmission. When the prepositioning shaft (6) is pushed by the driving mechanism to move towards the circular side wall, it drives the clamping points on the two fixing components (7) to move obliquely to both sides until the clamping points on the two fixing components (7) abut against the outer wall of the ring.

6. The frame machining fixture for an elevator traction machine as described in claim 5, characterized in that: The fixing component (7) includes a transmission component and two symmetrically arranged fixing plates (76). Both fixing plates (76) are inclined to the side away from the prepositioning shaft (6) and are slidably connected to the prepositioning shaft (6) or to a structure that is fixed relative to the position of the prepositioning shaft (6). The transmission component is connected to the two fixing plates (76) to drive the two fixing plates (76) to move synchronously closer to or away from the annular outer wall of the frame.

7. The frame machining fixture for an elevator traction machine as described in claim 6, characterized in that: The transmission component includes a support frame (71), which is fixed on the outer wall of the prepositioning shaft (6). A rotatable support horizontal shaft (72) is installed on the vertical outer wall of the support frame (71). A drive gear (73) is sleeved and fixed in the central area of ​​the support horizontal shaft (72). The drive gear (73) meshes with a vertically arranged drive rack (74), and the drive rack (74) is fixed in position relative to the moving drive gear (73). Both ends of the bearing horizontal shaft (72) are fitted with transmission gears (75), and the two transmission gears (75) are respectively meshed with the transmission racks on the two fixed plates (76). The diameter of the drive gear (73) is smaller than the diameter of the transmission gear (75).

8. The frame machining fixture for an elevator traction machine as described in claim 4, characterized in that: The driving mechanism includes a ring-shaped driving part (2), which is connected to the prepositioning shaft (6) via a corresponding transmission part (5). The driving part (2) includes a first driving ring (21), which is sleeved on the outside of the positioning ring (1) and coaxially arranged with the positioning ring (1). The positioning ring (1) can rotate on the outer wall of the bearing shell (101). The number of transmission parts (5) is the same as the number of prepositioning shafts (6) and they are arranged in a one-to-one correspondence. The transmission part (5) includes a first transmission curved plate (51), which is used to overlap with the end of the prepositioning shaft (6) and is fixedly set on the inner ring side wall of the positioning ring (1). The inner curved surface of the first transmission curved plate (51) gradually changes from one end to the other along the prepositioning axis (6), and the distance near the center of the positioning ring (1) gradually decreases.

9. The frame machining fixture for an elevator traction machine as described in claim 8, characterized in that: The drive unit (2) and the transmission unit (5) respectively include a second drive ring (22) and a second transmission curved plate (52). A pusher (77) is attached to the outer side of two fixed plates (76) located on the same side of the prepositioning shaft (6), and the pusher (77) can be pressed onto the end of the corresponding fixed plate (76) by the self-rotating second drive ring (22) and the second transmission curved plate (52).

10. The frame machining fixture for an elevator traction machine as described in claim 9, characterized in that: It also includes multiple guide components (3) arranged in a ring array to guide the rotation of the first drive ring (21) and the second drive ring (22). The guide components (3) include three arc-shaped guide shells (31), and the three guide shells (31) are respectively fixed on the inner ring sidewalls of the first drive ring (21) and the two second drive rings (22). The guide shells (31) are provided with arc-shaped guide slots, and the guide slots are coaxially arranged with the positioning ring (1). The guide slots on the three guide shells (31) are all penetrated by the same positioning post (32). The guide slots are slidably connected to the positioning post (32). The positioning post (32) is distributed along the axial direction of the positioning ring (1) and fixed on the outer wall of the bearing shell (101).

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