Elevator pull rod forming device

Abstract

The utility model discloses an elevator pull rod forming device, and particularly relates to the technical field of elevator accessory machining, which comprises a sliding support mounted on a mounting frame, rotating drums are rotatably mounted on two sides of the sliding support in a penetrating manner, clamping components are mounted in the rotating drums, and gear rings are fixedly mounted on the peripheral walls of the rotating drums. A rack meshed with the gear ring is slidably mounted on the sliding support, a limiting sliding groove is fixedly formed in the position, close to the rack, of the mounting frame, one end of the rack is slidably connected with the limiting sliding groove, a grinding assembly and a thread rolling assembly are arranged at the top of the mounting frame, and a transmission assembly is arranged between the grinding assembly and the rolling assembly. The rack is driven to slide on the sliding support through the sliding support which slides in a reciprocating mode, so that the rack drives the elevator pull rod clamped in the rotary drum to rotate through the gear ring, the grinding plate and the threaded pressing wheel which extrude the peripheral wall of the elevator pull rod are matched, and threads are rolled at the end of the elevator pull rod while a rod body of the elevator pull rod is ground; and the production quality of the elevator pull rod is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of elevator accessory processing, in particular to an elevator pull rod forming device. Background Art

[0002] The elevator pull rod is an important part of the elevator system. It is usually used to connect the elevator car and the counterweight to ensure the balance between the two. The main function of the pull rod is to transmit force and motion during the operation of the elevator, maintain the relative position between the car and the counterweight, thereby reducing the load on the elevator drive system and improving the operation efficiency and safety of the elevator.

[0003] Patent publication number CN102091915A discloses a production process of an elevator pull rod. The steps are as follows: heating one end of the blank of the elevator pull rod; putting the heated blank of the elevator pull rod into a mold; starting the first oil cylinder, so that the piston rod of the first oil cylinder drives the upper mold to move downward to achieve mold closing. After mold closing, the heated end of the blank of the elevator pull rod is located in the accommodation space formed by the first accommodation groove and the second accommodation groove; starting the second oil cylinder, the piston rod of the second oil cylinder drives the ejector rod to move to extrude the heated end of the blank of the elevator pull rod. As the ejector rod extrudes, the heated end of the blank of the elevator pull rod is continuously upset; making the piston rod of the first oil cylinder move upward, and the piston rod of the first oil cylinder drives the upper mold to move upward to achieve mold opening; die forging; drilling holes in the head of the elevator pull rod. This production process improves the strength of the elevator pull rod after forming, improves the forming quality of the elevator pull rod, and has high forming efficiency.

[0004] The existing method for manufacturing elevator pull rods usually first forges the elevator pull rod, and then uses a rolling method to process the threads of the elevator pull rod. However, quality problems such as cracks, folds, and oxide skins often appear on the surface of the elevator pull rod after forging, affecting the quality of the elevator pull rod. Content of the Utility Model

[0005] The purpose of the utility model is to provide an elevator pull rod forming device.

[0006] The technical problem solved by the utility model is to treat the surface of the original elevator pull rod of the elevator pull rod formed by forging to improve the production quality of the elevator pull rod.

[0007] The present utility model can be realized through the following technical solutions: It includes a mounting frame, on which a sliding bracket capable of reciprocating sliding is installed. Rotating cylinders are installed through both sides of the sliding bracket. A clamping assembly is installed inside the rotating cylinders. A gear ring is fixedly installed on the outer peripheral wall of the rotating cylinder. A rack meshing with the gear ring is slidably installed on the sliding bracket. A limiting chute is fixedly installed at a position on the mounting frame adjacent to the rack. One end of the rack is slidably connected to the limiting chute. A grinding assembly is provided at a position on the top of the mounting frame corresponding to the sliding bracket. A thread rolling assembly is provided on one side of the top of the mounting frame away from the sliding bracket. A transmission assembly is provided between the grinding assembly and the rolling assembly.

[0008] A further technical improvement of the present utility model lies in: The structure for promoting the reciprocating movement of the sliding bracket includes a first rotating rod rotatably installed on the mounting frame. One end of the first rotating rod away from the rotating shaft is rotatably installed with a push-pull plate. One end of the push-pull plate away from the first rotating rod is rotatably connected to one side of the sliding bracket.

[0009] Furthermore, the clamping assembly includes a number of clamping plates evenly arranged on the inner peripheral wall of the rotating cylinder. Rubber I is fixedly installed between each of the clamping plates and the inner peripheral wall of the rotating cylinder. Rubber II is fixedly installed between two adjacent clamping plates. Both Rubber I and Rubber II are made of hard rubber.

[0010] Furthermore, the transmission assembly includes a first sliding plate slidably installed through a position on the top of the mounting frame corresponding to the sliding bracket. A second sliding plate is slidably installed through a position on the top of the mounting frame away from the sliding bracket. A second rotating rod rotatably connected to the mounting frame is provided between the first sliding plate and the second sliding plate. One end of the second rotating rod is slidably connected through the top of the first sliding plate. The other end of the second rotating rod is slidably connected through the top of the second sliding plate.

[0011] Furthermore, the grinding assembly includes sliding rods slidably connected through both sides of the mounting frame. Grinding plates adapted to the outer peripheral wall of the elevator pull rod are fixedly installed on one side of the two sliding rods facing each other. A fixing plate is fixedly installed on the outer peripheral wall of the sliding rod. A spring sleeved on the outer peripheral wall of the sliding rod is fixedly installed between the fixing plate and the mounting frame. One end of each of the two sliding rods away from the grinding plate is rotatably installed with a first connecting plate. One end of the two first connecting plates away from the sliding rod is rotatably connected to the first sliding plate.

[0012] Furthermore, the thread rolling assembly includes two symmetrically arranged second connecting plates rotatably installed at the bottom of the second sliding plate. Thread pressing wheels are rotatably installed at the bottom of the two second connecting plates. Limiting plates are slidably installed through both sides of the mounting frame adjacent to the thread pressing wheels. One side of the thread pressing wheel away from the second connecting plate is rotatably connected to one side of the limiting plate.

[0013] Compared with the prior art, the present utility model has the following beneficial effects:

[0014] 1. In this application, the reciprocating sliding support drives the rack to slide on the support, so that the rack drives the elevator tie rod clamped in the rotating cylinder to rotate through the gear ring. Cooperating with the grinding plate and the threaded pressure wheel pressed against the outer peripheral wall of the elevator tie rod, the thread is rolled at the end while grinding the rod body of the elevator tie rod, improving the production quality of the elevator tie rod.

[0015] 2. In this application, the rotating second rotating rod causes the first slide plate and the second slide plate to move towards each other, so that the grinding plate and the threaded pressure wheel are respectively pressed against the outer peripheral wall of the elevator tie rod synchronously through the first connecting rod and the second connecting rod, or separated from the outer peripheral wall of the elevator tie rod synchronously, reducing the complexity of the operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] For the convenience of those skilled in the art to understand, the following further describes the present utility model in conjunction with the attached drawings.

[0017] Figure 1 is a schematic diagram of the external structure of the present utility model;

[0018] Figure 2 is a sectional view of the overall structure of the present utility model;

[0019] Figure 3 is a separated view of the internal structure of the clamping assembly of the present utility model.

[0020] In the figure: 1. Mounting frame; 2. Sliding support; 3. Rotating cylinder;

[0021] 4. Clamping assembly; 41. Clamping plate; 42. Rubber I; 43. Rubber II;

[0022] 5. Rack; 6. Gear ring; 7. Limit sliding groove; 8. First rotating rod; 9. Push-pull plate; 10. First slide plate; 11. Second slide plate; 12. Second rotating rod; 13. Slide rod; 14. Grinding plate; 15. Fixed plate; 16. Spring; 17. First connecting plate; 18. Second connecting plate; 19. Threaded pressure wheel; 20. Limit plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to further elaborate on the technical means and effects adopted by the present utility model to achieve the predetermined utility model purpose, the following, in conjunction with the attached drawings and preferred embodiments, details the specific implementation manners, structures, features and their effects of the present utility model as follows.

[0024] Please refer to Figures 1 - 3As shown in the figure, this embodiment provides an elevator tie rod forming device, which includes a mounting frame 1. A sliding bracket 2 is slidably mounted on the mounting frame 1. Rotating cylinders 3 are rotatably mounted through both sides of the sliding bracket 2. A clamping assembly 4 is installed inside the rotating cylinders 3. A rack 5 is slidably mounted on the sliding bracket 2 at a position near the bottom of the rotating cylinder 3. A gear ring 6 meshing with the rack 5 is fixedly mounted on one side of the outer peripheral wall of the rotating cylinder 3 adjacent to the rack 5. A limiting chute 7 is fixedly mounted on the mounting frame 1 at a position near the rack 5. The trajectory of the limiting chute 7 is inclined to the sliding trajectory of the sliding bracket 2. One end of the rack 5 is slidably connected to the limiting chute 7. A first rotating rod 8 is rotatably mounted on the mounting frame 1. A driving motor for driving the first rotating rod 8 to rotate is installed on the mounting frame 1. A push-pull plate 9 is rotatably mounted at the end of the first rotating rod 8 away from the rotating shaft. One end of the push-pull plate 9 away from the first rotating rod 8 is rotatably connected to one side of the sliding bracket 2;

[0025] The rotating first rotating rod 8 drives the sliding bracket 2 to slide back and forth on the mounting frame 1 through the push-pull plate 9. While the rack 5 moves synchronously with the sliding bracket 2, one end of the rack 5 also slides within the trajectory restricted by the limiting chute 7, thereby causing the rack 5 to slide left and right on the sliding bracket 2, so as to drive the rotating cylinder 3 to rotate back and forth on the sliding bracket 2 through the gear ring 6;

[0026] The clamping assembly 4 includes a number of clamping plates 41 uniformly arranged on the inner peripheral wall of the rotating cylinder 3. Rubber pieces 42 are fixedly installed between each of the clamping plates 41 and the inner peripheral wall of the rotating cylinder 3. Rubber pieces 43 are fixedly installed between every two adjacent clamping plates 41. Both the rubber pieces 42 and 43 are made of hard rubber, such as nitrile rubber, neoprene rubber, silicone rubber, etc. The forged elevator tie rod is passed through the two rotating cylinders 3 on both sides of the sliding bracket 2. The outer peripheral wall of the elevator tie rod squeezes the clamping plates 41, causing the clamping plates 41 to squeeze the corresponding rubber pieces 42 towards the inner wall of the rotating cylinder 3, putting the rubber pieces 42 in a stressed state. And at this time, the positions of the clamping plates 41 change, and every two adjacent clamping plates 41 will pull the spring 16 between them, putting the rubber pieces 43 in a stressed state as well. Since both the rubber pieces 42 and 43 are made of hard rubber and have a certain hardness, elasticity and wear resistance, the rubber pieces 42 and 43 will in turn act on the clamping plates 41 with a reaction force, causing the clamping plates 41 to squeeze towards the outer peripheral wall of the elevator tie rod, thereby clamping the elevator tie rod tightly inside the rotating cylinder 3;

[0027] At the position corresponding to the sliding bracket 2 on the top of the mounting bracket 1, a first sliding plate 10 is slidably installed through. At the position on the top of the mounting bracket 1 away from the sliding bracket 2, a second sliding plate 11 is slidably installed through. A second rotating rod 12 is rotatably installed on the top of the mounting bracket 1. One end of the second rotating rod 12 is slidably connected through the top of the first sliding plate 10, and the other end of the second rotating rod 12 is slidably connected through the top of the second sliding plate 11. A grinding assembly is provided at the bottom of the first sliding plate 10, and a thread rolling assembly is provided at the bottom of the second sliding plate 11. When the second rotating rod 12 rotates clockwise, it will drive the first sliding plate 10 at its one end to move upward. At the same time, this end of the second rotating rod 12 also slides on the first sliding plate 10 to correct the position change between the second rotating rod 12 and the first sliding plate 10 caused by the rotation of the second rotating rod 12, and it will also drive the second sliding plate 11 at the other end to move downward. This end of the second rotating rod 12 also slides on the second sliding plate 11 to correct the position change between the second rotating rod 12 and the second sliding plate 11. Conversely, it will cause the first sliding plate 10 to move downward and the second sliding plate 11 to move upward;

[0028] The grinding assembly includes sliding rods 13 slidably connected through both sides of the mounting bracket 1. On the opposite sides of the two sliding rods 13, grinding plates 14 adapted to the outer peripheral wall of the elevator pull rod are fixedly installed. A fixing plate 15 is fixedly installed on the outer peripheral wall of the sliding rod 13. A spring 16 sleeved on the outer peripheral wall of the sliding rod 13 is fixedly installed between the fixing plate 15 and the mounting bracket 1. At the ends of the two sliding rods 13 away from the grinding plates 14, first connecting plates 17 are rotatably installed. At the ends of the two first connecting plates 17 away from the sliding rods 13, they are rotatably connected to the first sliding plate 10. Through the extrusion of the spring 16 on the fixing plate 15 by the sliding rod 13, it drives the first connecting plate 17 to always tend to move towards the direction of the grinding plate 14, preventing the first connecting plate 17 from deflecting outwards, thereby causing a change in the transmission relationship between the first sliding plate 10 and the sliding rod 13;

[0029] The thread rolling assembly includes two symmetrically arranged second connecting plates 18 rotatably installed at the bottom of the second sliding plate 11. At the bottoms of the two second connecting plates 18, thread pressing wheels 19 are rotatably installed. On both sides of the mounting bracket 1 close to the thread pressing wheels 19, limit plates 20 are slidably installed through. The side of the thread pressing wheel 19 away from the second connecting plate 18 is rotatably connected to one side of the limit plate 20;

[0030] When the skateboard 10 moves downward, it will drive the two slide bars 13 to approach each other through the two connecting plates 17 respectively, thereby reducing the distance between the two grinding plates 14 so that the grinding plates 14 fit on the outer peripheral wall of the elevator pull rod. At the same time, the skateboard 11 moves upward and drives the two threaded pressure wheels 19 to approach each other through the two symmetric connecting plates 18 respectively, so that the two threaded pressure wheels 19 move synchronously within the sliding tracks restricted by the two limit plates 20 and squeeze on the outer peripheral wall of the elevator pull rod. Then, when the elevator pull rod rotates, the threaded pressure wheels 19 attached to the elevator pull rod will rotate synchronously and roll threads on the metal rod. Conversely, the distance between the two grinding plates 14 and the two threaded pressure wheels 19 is increased, so that the grinding plates 14 and the threaded pressure wheels 19 are simultaneously separated from the surface of the elevator pull rod, facilitating the removal of the elevator pull rod from the device.

[0031] When the present utility model is in use, first, the elevator pull rod formed by forging is passed through between the two rotating cylinders 3. Then, after the elevator pull rod is firmly clamped by the clamping components 4 in the two rotating cylinders 3, the rotating rod 12 is rotated counterclockwise, so that while the skateboard 10 moves downward, the skateboard 11 moves upward, thereby enabling the two grinding plates 14 and the two threaded pressure wheels 19 to respectively squeeze on the middle and end of the outer peripheral wall of the elevator pull rod. Then, the rotating rod 8 is rotated, and the sliding bracket 2 is driven to reciprocate back and forth on the mounting bracket 1 through the push-pull plate 9. While the sliding bracket 2 reciprocates, the rack 5 reciprocates left and right on the sliding bracket 2 under the restriction of the limit sliding groove 7, thereby driving the rotating cylinder 3 to reciprocate and rotate on the sliding bracket 2 through the gear ring 6 to drive the elevator pull rod clamped in the rotating cylinder 3 to rotate. Therefore, while the elevator pull rod reciprocates back and forth driven by the sliding bracket 2, it also reciprocates and rotates within a certain self-rotation angle driven by the rotating cylinder 3, so that the grinding plate 14 squeezing on the outer peripheral wall of the elevator pull rod grinds it, and the threaded pressure wheel 19 rolls threads at the end of the elevator pull rod to process the forged metal rod into a qualified elevator pull rod.

[0032] The above is only a preferred embodiment of the present utility model, and it does not impose any form of limitation on the present utility model. Although the present utility model has been disclosed as above with the preferred embodiment, it is not intended to limit the present utility model. Any person skilled in the art can make some changes or modifications to it as equivalent embodiments within the scope of the technical solution of the present utility model. However, as long as it does not depart from the content of the technical solution of the present utility model, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model still fall within the scope of the technical solution of the present utility model.

Claims

1. An elevator tie rod forming device, comprising a mounting frame (1), characterized in that: The mounting frame (1) is provided with a sliding bracket (2) capable of reciprocating sliding, a rotating drum (3) is rotatably mounted on both sides of the sliding bracket (2), a clamping assembly (4) is mounted inside the rotating drum (3), a gear ring (6) is fixedly mounted on the outer peripheral wall of the rotating drum (3), a rack (5) meshing with the gear ring (6) is slidably mounted on the sliding bracket (2), a limiting slide groove (7) is fixedly mounted at a position of the mounting frame (1) adjacent to the rack (5), one end of the rack (5) is slidably connected to the limiting slide groove (7), a grinding assembly is provided at a position of the top of the mounting frame (1) corresponding to the sliding bracket (2), a thread rolling assembly is provided at a side of the top of the mounting frame (1) away from the sliding bracket (2), and a transmission assembly is provided between the grinding assembly and the rolling assembly.

2. The elevator tie rod forming device according to claim 1, characterized in that: The structure for causing the sliding bracket (2) to reciprocate comprises a rotating rod (8) rotatably mounted on the mounting frame (1); a push-pull plate (9) is rotatably mounted on the end of the rotating rod (8) away from the rotating shaft; and the end of the push-pull plate (9) away from the rotating rod (8) is rotatably connected to one side of the sliding bracket (2).

3. The elevator tie rod forming device according to claim 1, characterized in that: The clamping assembly (4) comprises a plurality of clamping plates (41) uniformly arranged on the inner peripheral wall of the rotating drum (3), a rubber first (42) is fixedly installed between the plurality of clamping plates (41) and the inner peripheral wall of the rotating drum (3), a rubber second (43) is fixedly installed between two adjacent clamping plates (41), and the rubber first (42) and the rubber second (43) are both made of hard rubber.

4. The elevator tie rod forming device according to claim 1, characterized in that: The transmission assembly comprises a slide plate (10) which is slidably installed at a position of the top of the mounting frame (1) corresponding to the sliding bracket (2), a slide plate (11) which is slidably installed at a position of the top of the mounting frame (1) away from the sliding bracket (2), a rotating rod (12) which is rotatably connected to the mounting frame (1) is provided between the slide plate (10) and the slide plate (11), one end of the rotating rod (12) is slidably connected to the top of the slide plate (10), and the other end of the rotating rod (12) is slidably connected to the top of the slide plate (11).

5. The elevator tie rod forming device according to claim 4, characterized in that: The grinding assembly comprises sliding rods (13) which are slidably connected and pass through both sides of the mounting frame (1); grinding plates (14) which are adapted to the outer peripheral wall of the elevator pull rod are fixedly installed on the opposite sides of the two sliding rods (13); a fixing plate (15) is fixedly installed on the outer peripheral wall of the sliding rod (13); a spring (16) which is sleeved on the outer peripheral wall of the sliding rod (13) is fixedly installed between the fixing plate (15) and the mounting frame (1); a connecting plate (17) is rotatably installed on the ends of the two sliding rods (13) away from the grinding plate (14); and the ends of the two connecting plates (17) away from the sliding rods (13) are rotatably connected to a slide plate (10).

6. The elevator tie rod forming device according to claim 4, characterized in that: The thread rolling assembly comprises two mutually symmetrical connecting plates (18) rotatably mounted at the bottom of the second slide plate (11), and thread pressing wheels (19) are rotatably mounted at the bottom of the two connecting plates (18). Both sides of the mounting frame (1) adjacent to the thread pressing wheels (19) are penetrated by limit plates (20) that are slidably mounted, and the side of the thread pressing wheel (19) away from the second connecting plate (18) is rotatably connected to one side of the limit plate (20).

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