Bolt constant-torque counter-force arm device of speed reducer
By designing a reducer bolt torsion-fixing reaction force arm device that is matched with the positioning rod and the positioning plate, the problem of the reducer rotation during the bolt is solved, and stable fixation and flexible operation of different types of reducers are achieved, and operation safety and versatility are improved.
Patent Information
- Application Number
- CN202422301433.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-20
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-20
AI Technical Summary
In the assembly process of high-altitude operation platform vehicle reducer, the bolts cannot effectively prevent the reducer from rotating when the bolts are fixed, resulting in impact of the product circumferential rotation force, and lacks versatility, making it difficult to adapt to the fixing needs of different types of reducers.
A reduction machine bolt fixed torque reaction arm device including a positioning rod and a positioning plate is designed. The positioning rod and the bolt installation direction are consistent, the limit groove of the positioning plate is matched with the bolt, and the protective sleeve protects the hub bolts to achieve rapid installation and adaptation to various types of reducers.
It realizes stable fixation of different types of reducers, prevents rotation, improves operating safety and flexibility, reduces manpower and material consumption, and is suitable for products of various shapes and sizes.
Smart Images
Figure CN223160456U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of part processing, and specifically relates to a torque-fixed reaction arm device for reducer bolts. Background Technique
[0002] During the assembly process of the reducer of an aerial work platform vehicle, it is necessary to torque the end cover bolts and oil plugs, so it is necessary to prevent the reducer from rotating. Due to the different product structures, it is necessary to frequently replace the trays when using the assembly line trays to fix the reducer, which consumes a large amount of manpower and material resources. It is difficult to start from the trays considering the versatility of different models of products.
[0003] After retrieval, CN202223523487.0 discloses a reaction arm bolt tightening device, which includes a column. The column is slidably connected to a reaction anti-torsion rod. One end of the reaction anti-torsion rod away from the column is rotatably connected to an extended reaction arm. A clamping tool is arranged on the extended reaction arm. The clamping tool is used to clamp a tightening tool. A tightening head is arranged on the tightening tool. The reaction anti-torsion rod can move up and down along the column, so as to adjust the up and down position of the tightening tool. The position of the tightening tool can be rotated through the extended reaction arm. Through the cooperation of up and down and left and right adjustments, the most suitable tightening angle can be adjusted according to the joint surface to be tightened. The adjustment of the tightening tool is more flexible. The tightening tool is connected to the tightening head, and the bolt to be reinforced is tightened through the tightening head, which further improves the flexibility of the tightening tool in construction in a narrow space. At the same time, under the action of the reaction anti-torsion rod and the extended reaction arm, the reaction force generated during the tightening process is also reduced, and the construction difficulty of the operation is reduced.
[0004] The above scheme does not solve the circumferential rotational force caused by the impact generated during bolt torque fixation to the product, and cannot ensure that the workpiece is fully fixed during torque fixation. At the same time, after retrieval, there is no reported device for fixing the reducer during the tightening of the assembly bolts of the reducer. Therefore, inventing a reaction arm tooling to prevent the reducer from rotating during bolt torque fixation, which can be applicable to various models of reducers with hub bolts, has important practical significance and economic value in actual production. Summary of the Utility Model
[0005] Aiming at the above-mentioned deficiencies of the prior art, the utility model provides a torque-fixed reaction arm device for reducer bolts, which adopts a structure that can be quickly disassembled, including a positioning rod, a positioning plate and a protective sleeve. The positioning plate can be installed on the assembly line rack. The protective sleeve is installed on the positioning rod to protect the hub bolts. The positioning rod and the positioning plate are in sliding fit. The designed structure is simple, can be used quickly, and is applicable to products with various external dimensions.
[0006] Compared with the prior art, the technical solution of the utility model is as follows:
[0007] Disclose a torque-fixed reaction arm device for a reducer bolt, including a positioning rod arranged in the same direction as the installation direction of the reducer bolt. The positioning rod includes a fixed end and an installation end. A positioning plate is sleeved on the installation end, and the extending direction of the positioning plate is set at an angle to the installation direction of the reducer bolt. The positioning plate includes a body, a first limiting groove installed on the body, and a second limiting groove arranged at the end of the body. A protective sleeve is arranged on one side of the second limiting groove to protect the hub bolt.
[0008] For the torque-fixed reaction arm device of the reducer bolt of the present utility model, by using the cooperation of the positioning rod and the positioning plate, the positioning rod is fixed on one side of the reducer to be assembled. The second limiting groove of the positioning plate is sleeved on the bolt at the edge of the reducer to be assembled, and the positioning rod slides in the first limiting groove of the positioning plate, which can be applicable to the installation of end cover bolts of reducers of different sizes.
[0009] Furthermore, the end face area of the fixed end of the positioning rod is larger than that of the installation end face area. With this structure, the positioning rod is smaller at the top and larger at the bottom, enhancing the installation stability of the positioning rod; at the same time, it can also be more easily matched with the positioning plate, reducing the manufacturing cost of the device.
[0010] Furthermore, the fixed end is a square rod body, the installation end is a flat installation block, and the fixed end and the installation end are connected by a transition section that shrinks from the fixed end to the installation end. Setting the fixed end as a square rod body can effectively prevent the circumferential rotation of the reducer to be assembled. Using a transition section to connect the fixed end and the installation end can enhance the service life of the entire positioning rod and improve the safety and reliability of use.
[0011] Furthermore, the first limiting groove is a rectangular empty groove, and the width of the rectangular empty groove is larger than the thickness of the square rod body, and the square rod body can slide reciprocally along the inner wall of the rectangular empty groove. The rectangular hole groove cooperates with the square rod body of the positioning plate to limit the rotation of the positioning plate.
[0012] Furthermore, the length of the rectangular empty groove is less than the length of the square rod body of the fixed end. This design makes it not easy for the square rod body to come out easily when passing through the first limiting groove, increasing the safety performance of use.
[0013] Furthermore, the second limiting groove is a first circular through hole, and the inner diameter of the first circular through hole is larger than the outer diameter of the hub bolt.
[0014] Furthermore, the protective sleeve is arranged on the top of the positioning plate, including a fitting surface and a buffer arm. The shape of the fitting surface is consistent with the end of the positioning plate, and the buffer arm extends downward from the fitting surface and fits on the inner wall of the first circular through hole.
[0015] Furthermore, a second circular through hole is arranged at the center of the protective sleeve, and the center of the second circular through hole is the same as that of the first circular through hole, and the inner diameter of the second circular through hole is larger than the outer diameter of the hub bolt.
[0016] Furthermore, the protective cover is fixed on the positioning plate by bolts.
[0017] Furthermore, the extending direction of the positioning plate is set at an angle of 90° with the installation direction of the reducer bolts.
[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0019] 1. The torque-fixed reaction arm device for reducer bolts of the present utility model adopts the cooperation of a positioning rod and a positioning plate, and can be applicable to various models of reducers with hub bolts. The tooling structure designed by the present utility model is unique, easy to use, and highly efficient.
[0020] 2. The positioning plate of the torque-fixed reaction arm device for reducer bolts of the present utility model can be installed on the assembly line rack, and the protective cover is installed on the positioning rod to protect the hub bolts. The positioning rod and the positioning plate are in a sliding fit. The design structure is simple, and it can be quickly used and is applicable to products with various external dimensions.
[0021] 3. The torque-fixed reaction arm device for reducer bolts of the present utility model is convenient to use and maintain. Only the protective cover needs to be replaced, and the operation is fast and convenient, having a broad market prospect. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 It is a schematic structural diagram of the torque-fixed reaction arm device for reducer bolts of the present utility model.
[0023] Figure 2 It is a schematic structural diagram of the positioning rod of the torque-fixed reaction arm device for reducer bolts of the present utility model.
[0024] Figure 3 It is a schematic structural diagram of the positioning plate of the torque-fixed reaction arm device for reducer bolts of the present utility model.
[0025] Figure 4 It is a schematic structural diagram of the protective cover of the torque-fixed reaction arm device for reducer bolts of the present utility model.
[0026] The reference numerals include: 1 - positioning rod, 11 - fixed end, 12 - installation end, 13 - transition section, 2 - positioning plate, 21 - body, 22 - first limiting groove, 23 - second limiting groove, 3 - protective cover, 31 - fitting surface, 32 - buffer arm. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0027] For the convenience of elaborating and understanding the present utility model, the following will Figures 1-4 make a detailed description of the embodiments of the present utility model with reference to the attached Embodiment 1
[0028] The anti-torsion reaction arm device for the reducer bolts in this embodiment is used to prevent the reducer from rotating during the bolt torque setting, and is especially suitable for various types of reducers with hub bolts. It includes a positioning rod 1 arranged in the same direction as the installation direction of the reducer bolts. The positioning rod 1 includes a fixed end 11 and an installation end 12. The fixed end 11 is installed on one side of the reducer to be assembled; a positioning plate 2 is sleeved on the installation end 12, and the extending direction of the positioning plate 2 is set at an angle to the installation direction of the reducer bolts. In this embodiment, the extending direction of the positioning plate 2 is set at a 90° angle to the installation direction of the reducer bolts. This setting can effectively adjust the positions of the positioning rod 1 and the positioning plate 2 according to different reducer models, ensuring the versatility of the entire device.
[0029] The positioning plate 2 includes a body 21, a first limiting groove 22 installed on the body, and a second limiting groove 23 arranged at the end of the body 21. A protective sleeve 3 is arranged on one side of the second limiting groove 23. The protective sleeve 3 is fixed to the positioning plate 2 by bolts to protect the hub bolts. The second limiting groove 23 is a first circular through hole, and the inner diameter of the first circular through hole is larger than the outer diameter of the hub bolt. The first limiting groove 22 is a rectangular empty groove, and the width of the rectangular empty groove is larger than the thickness of the square rod body. In this embodiment, the width of the rectangular empty groove of the square rod body is 1.1 - 1.2 times the thickness of the square rod body, so that the entire positioning rod 1 can slide reciprocally along the inner wall of the rectangular empty groove and is not easily rotated too much in the rectangular empty groove. The length of the rectangular empty groove is less than the length of the square rod body of the fixed end 11. This design makes the square rod body not easily come out when passing through the first limiting groove, increasing the safety performance of use.
[0030] The protective sleeve 3 is arranged on the top of the positioning plate 2 and includes a fitting surface 31 and a buffer arm 32. The shape of the fitting surface 31 is consistent with the end of the positioning plate 2. The buffer arm 32 extends downward from the fitting surface 31 and fits on the inner wall of the first circular through hole. A second circular through hole is arranged at the center of the protective sleeve 3, and the center of the second circular through hole is consistent with that of the first circular through hole. The inner diameter of the second circular through hole is larger than the outer diameter of the hub bolt. The protective sleeve 3 can be made of rubber material or a material with better buffering performance to protect the hub bolts extending into it from being deformed or damaged by external bumps.
[0031] In addition, the end face area of the fixed end 11 of the positioning rod 1 is larger than the end face area of the installation end 12. With this structure, the upper part of the positioning rod is small and the lower part is large, enhancing the installation stability of the positioning rod; at the same time, it can also be more easily matched with the positioning plate, reducing the manufacturing cost of the device.
[0032] In this embodiment, the fixed end 11 is a square rod body, the installation end 12 is a flat installation block, and the fixed end 11 and the installation end 12 are connected by a transition section 13 that contracts from the fixed end 11 to the installation end 12. Setting the fixed end as a square rod body can effectively prevent the circumferential rotation of the reducer to be assembled. Using a transition section to connect the fixed end and the installation end can enhance the service life of the entire positioning rod and improve the safety and reliability of use.
[0033] For the reducer bolt fixed-torque reaction arm device of the present utility model, the cooperation of the positioning rod 1 and the positioning plate 2 is adopted, so that the positioning rod 1 is fixed on one side of the reducer to be assembled. The second limiting groove 23 of the positioning plate 1 is sleeved on the bolt at the edge of the reducer to be assembled, and the positioning rod 1 slides in the first limiting groove 22 of the positioning plate 2 to adjust the distance between the positioning plate 2 and the reducer to be assembled, and it can be applicable to the installation of end cover bolts of reducers with different sizes.
[0034] The above are only the embodiments of the present utility model. The present utility model is not limited to the fields involved in this embodiment case, and common knowledge such as the specific structures and characteristics known in the solutions is not described in detail herein. It should be pointed out that for those skilled in the art, without departing from the content of the present utility model, several deformations and improvements can still be made, and these should also be regarded as the protection scope of the present utility model, and these will not affect the implementation effect of the present utility model and the practicability of the patent. The protection scope required by this application should be based on the content of its claims, and the specific implementation manners and the like recorded in the specification can be used to interpret the content of the claims.
Claims
1. A bolt fixed-torque reaction arm device for a speed reducer, characterized in that, It includes a positioning rod (1) set in the same direction as the installation direction of the reducer bolts. The positioning rod includes a fixed end (11) and an installation end (12). A positioning plate (2) is sleeved on the installation end (12), and the extending direction of the positioning plate (2) is set at an angle to the installation direction of the reducer bolts; the positioning plate (2) includes a body (21), a first limiting groove (22) installed on the body, and a second limiting groove (23) provided at the end of the body (21). A protective sleeve (3) is provided on one side of the second limiting groove (23) to protect the hub bolts.
2. The anti-reaction force arm device for the fixed torque of the reducer bolt according to claim 1, characterized in that, The end face area of the fixed end (11) of the positioning rod (1) is larger than the end face area of the installation end (12).
3. The torque-fixed reaction arm device for the reducer bolt according to claim 2, wherein, The fixed end (11) is a square rod body, the installation end (12) is a flat installation block, and the fixed end (11) and the installation end (12) are connected by a transition section (13) that shrinks from the fixed end (11) to the installation end (12).
4. The anti-reaction force arm device for bolt torque setting of the speed reducer according to claim 3, wherein, The first limiting groove (22) is a rectangular empty groove, the width of the rectangular empty groove is larger than the thickness of the square rod body, and the square rod body can slide reciprocally along the inner wall of the rectangular empty groove.
5. The reducer bolt fixed-torque reaction arm device according to claim 4, characterized in that, The length of the rectangular empty groove is less than the length of the square rod body of the fixed end (11).
6. The torque-fixed reaction arm device for the reducer bolt according to claim 5, characterized in that, The second limiting groove (23) is a first circular through-hole, and the inner diameter of the first circular through-hole is larger than the outer diameter of the hub bolt.
7. The torque-fixed reaction arm device for the reducer bolt according to claim 6, wherein, The protective sleeve (3) is arranged on the top of the positioning plate (2) and includes a fitting surface (31) and a buffer arm (32). The shape of the fitting surface (31) is consistent with the end of the positioning plate (2), and the buffer arm (32) extends downward from the fitting surface (31) and fits on the inner wall of the first circular through-hole.
8. The torque-fixed reaction arm device for the reduction gearbox bolt according to claim 7, wherein, A second circular through-hole is provided at the center of the protective sleeve (3), the center of the second circular through-hole is consistent with the center of the first circular through-hole, and the inner diameter of the second circular through-hole is larger than the outer diameter of the hub bolt.
9. The torque-fixed reaction arm device for the reducer bolt according to claim 8, characterized in that, The protective sleeve (3) is fixed on the positioning plate (2) by bolts.
10. The torque-fixed reaction arm device for the reducer bolt according to any one of claims 1-9, characterized in that, The extending direction of the positioning plate (2) is set at a 90° angle to the installation direction of the reducer bolts.
Citation Information
Patent Citations
Counter-force arm bolt tightening device
CN219358617U