Bending device for inner cylinder of shock absorber

By designing a bending device that includes a clamping system with hydraulic cylinders and a motor drive, the problem of fixed dimensions in existing devices is solved, enabling stable clamping and flexible bending of inner cylinders of shock absorbers of different sizes, thus reducing limitations in use.

CN223862609UActive Publication Date: 2026-02-03XINXIN PRECISION MANUFACTURING (JIANGSU) CO LTD
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Patent Information

Application Number
CN202520509056.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-03-21
Publication Date
2026-02-03
Estimated Expiration
2035-03-21

AI Technical Summary

Technical Problem

The existing bending device has a fixed size and cannot be adjusted according to the different sizes of the shock absorber inner cylinder, which limits its use.

Method used

A bending device was designed, comprising a workbench, upright plate, hydraulic cylinder, mounting bracket, bending head, motor, and other components. The clamping system driven by the hydraulic cylinder and motor can accommodate shock absorber inner cylinders of different sizes and facilitates the replacement of the bending head.

Benefits of technology

It achieves stable clamping and flexible bending of the inner cylinder of shock absorbers of different sizes, reducing usage limitations and improving adaptability.

✦ Generated by Eureka AI based on patent content.

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    Figure CN223862609U_ABST
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Abstract

The utility model relates to the technical field of shock absorber inner cylinder processing, in particular to a bending device for shock absorber inner cylinders, which is convenient for clamping and fixing shock absorber inner cylinders with different sizes by arranging the bending device, is convenient for replacing bending heads according to requirements, and reduces the use limitation of the bending device. Comprising a workbench, a vertical plate, a hydraulic cylinder, a mounting frame, a bending head, a two-way screw rod, a first motor, two sets of moving blocks, two sets of moving frames, two sets of fixed arc-shaped clamping plates, two sets of movable arc-shaped clamping plates, two sets of screw rods, four sets of bevel gears, two sets of rotating shafts, two sets of motor plates, two sets of second motors and a mounting mechanism. The first motor is installed on the right side of the front end of the workbench, the output end of the first motor penetrates through the front end of the workbench to be connected with the front end of the two-way screw, the four bevel gears are installed at the tops of the two threaded pipes and the inner ends of the two rotating shafts respectively, and every two corresponding bevel gears are meshed.
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Description

Technical Field

[0001] This utility model relates to the technical field of processing inner cylinders of shock absorbers, and in particular to a bending device for inner cylinders of shock absorbers. Background Technology

[0002] The inner cylinder of a shock absorber is part of the shock absorber in a car's suspension system. It is mainly responsible for absorbing and reducing vibrations caused by uneven road surfaces during vehicle operation. The shock absorber works by converting kinetic energy into heat energy, thereby ensuring the vehicle's stability and driving comfort. The inner cylinder usually refers to a key component of the shock absorber. It works in conjunction with the outer cylinder and contains hydraulic oil or gas, as well as pistons and other components.

[0003] The inner cylinder of a shock absorber usually needs to have a certain shape and structure to meet its functional requirements in the shock absorber, which means that it needs to be bent during the processing of the inner cylinder of the shock absorber.

[0004] However, the existing bending devices have fixed dimensions and cannot be adjusted according to the dimensions of the shock absorber's inner cylinder, which limits their application. Utility Model Content

[0005] To solve the above-mentioned technical problems, this utility model provides a bending device for shock absorber inner cylinders that facilitates clamping and fixing of shock absorber inner cylinders of different sizes by setting this device, and also facilitates the replacement of bending heads as needed, thus reducing the limitations of its use.

[0006] This utility model discloses a bending device for the inner cylinder of a shock absorber, comprising a workbench, a vertical plate, a hydraulic cylinder, a mounting frame, a bending head, a bidirectional screw, a first motor, two sets of moving blocks, two sets of moving frames, two sets of fixed arc-shaped clamps, two sets of moving arc-shaped clamps, two sets of screws, four sets of bevel gears, two sets of rotating shafts, two sets of motor plates, two sets of second motors, and a mounting mechanism. The vertical plate is installed on the left side of the top of the workbench, the hydraulic cylinder is installed on the right side of the vertical plate, the mounting frame is installed on the output end of the hydraulic cylinder, and the bending head is installed on the mounting frame via the mounting mechanism. A mounting groove is provided on the right side of the top of the workbench, and the bidirectional screw is rotatably installed in the mounting groove of the workbench. The first motor is installed on the right side of the front end of the workbench, and the output end of the first motor passes through the front end of the workbench and the front end of the bidirectional screw. The system is as follows: two sets of moving blocks slide within the mounting slots of the worktable; the two sets of moving blocks are respectively installed at the bottom of the two sets of moving frames; threaded holes are connected in the middle of both sets of moving blocks; the two sets of moving blocks are threadedly connected to bidirectional screws; two sets of fixed arc-shaped clamping plates are respectively installed at the bottom of the two sets of moving frames; two sets of movable arc-shaped clamping plates are respectively connected to the bottom of the two sets of screws; two sets of threaded tubes are rotatably installed on the top of the two sets of moving frames; the two sets of threaded tubes are respectively threadedly connected to the two sets of screws; two sets of motor plates are installed on the top of the two sets of moving frames; two sets of second motors are respectively installed on the top of the two sets of motor plates; two sets of rotating shafts are respectively connected to the output ends of the two sets of second motors; four sets of bevel gears are respectively installed on the top of the two sets of threaded tubes and the inner ends of the two sets of rotating shafts; and each pair of corresponding bevel gears meshes.

[0007] Preferably, the installation mechanism includes an installation rod, a nut, and a limiting plate. The installation rod is installed on the mounting frame, the limiting plate is installed at the bottom of the installation rod, the top of the installation rod is threaded, the bent head is inserted into the installation rod, and the nut is threadedly connected to the installation rod.

[0008] Preferably, it also includes two sets of first gears, two sets of fixed plates, two sets of rotating rods, two sets of second gears, and two sets of handwheels. The two sets of first gears are respectively mounted on two sets of rotating shafts, and the two sets of first gears mesh with the two sets of second gears. The two sets of second gears are respectively mounted on two sets of rotating rods, and the two sets of rotating rods are rotatably mounted on two sets of fixed plates. The two sets of fixed plates are respectively mounted on the top of two sets of movable frames, and the two sets of handwheels are respectively mounted on the outer ends of the two sets of rotating rods.

[0009] Preferably, it also includes two sets of limiting blocks, which are respectively installed on the top of two sets of screws.

[0010] Preferably, it also includes four sets of guide rods, which are respectively installed on the left and right sides of the top of the two sets of movable arc-shaped clamps. Sliding holes are provided on the left and right sides of the top of the two sets of movable frames, and the four sets of guide rods are slidably connected to the four sets of sliding holes of the two sets of movable frames.

[0011] Preferably, it also includes two sets of support plates, which are respectively installed on the top of two sets of movable frames, and the two sets of support plates are respectively rotatably connected to two sets of rotating shafts.

[0012] Preferably, pressure sensors are provided at the inner ends of both sets of moving arc-shaped clamps.

[0013] Preferably, it also includes an alarm, which is installed on the top of the workbench and electrically connected to two sets of pressure sensors.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The inner cylinder of the shock absorber is placed on two sets of fixed arc-shaped clamps, so that the bending position of the inner cylinder of the shock absorber is located between the two sets of fixed arc-shaped clamps. Then, the first motor is turned on, which drives the bidirectional screw to rotate. The bidirectional screw is threadedly connected to two sets of moving blocks. The two sets of moving blocks drive two sets of moving frames to move inward. When the two sets of fixed arc-shaped clamps are located on both sides of the bending position of the inner cylinder of the shock absorber, the two sets of second motors are turned on. The two sets of second motors drive the two sets of threaded tubes to rotate through two sets of rotating shafts and four sets of bevel gears. The threaded tube is threadedly connected to two sets of screws, which in turn drive two sets of moving arc-shaped clamps to move downwards. The two sets of moving arc-shaped clamps and two sets of fixed arc-shaped clamps work together to clamp and fix the inner cylinder of the shock absorber. Then, according to the bending requirements of the inner cylinder of the shock absorber, a suitable bending head is installed through the installation mechanism. After that, the hydraulic cylinder is opened, and the hydraulic cylinder drives the bending head to move to the right, so that the bending head bends the inner cylinder of the shock absorber. By setting up this device, it is easy to clamp and fix the inner cylinder of shock absorbers of different sizes, and it is also easy to replace the bending head as needed, reducing its usage limitations. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a top-down enlarged structural diagram of the mobile frame;

[0017] Figure 3 yes Figure 1 A magnified structural diagram of A in the middle;

[0018] Figure 4 yes Figure 1 A magnified structural diagram of B in the diagram;

[0019] The following are labels in the attached diagram: 1. Workbench; 2. Vertical plate; 3. Hydraulic cylinder; 4. Mounting bracket; 5. Bending head; 6. Bidirectional screw; 7. First motor; 8. Moving block; 9. Moving frame; 10. Fixed arc-shaped clamping plate; 11. Moving arc-shaped clamping plate; 12. Screw; 13. Bevel gear; 14. Rotating shaft; 15. Motor plate; 16. Second motor; 17. Mounting rod; 18. Nut; 19. First gear; 20. Fixing plate; 21. Rotating rod; 22. Second gear; 23. Handwheel; 24. Limiting block; 25. Guide rod; 26. Support plate; 27. Alarm; 28. Limiting plate. Detailed Implementation

[0020] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0021] like Figures 1 to 4 As shown, this utility model discloses a bending device for the inner cylinder of a shock absorber, comprising a workbench 1, a vertical plate 2, a hydraulic cylinder 3, a mounting frame 4, a bending head 5, a bidirectional screw 6, a first motor 7, two sets of moving blocks 8, two sets of moving frames 9, two sets of fixed arc-shaped clamping plates 10, two sets of moving arc-shaped clamping plates 11, two sets of screws 12, four sets of bevel gears 13, two sets of rotating shafts 14, two sets of motor plates 15, two sets of second motors 16, and a mounting mechanism. The vertical plate 2 is installed on the top left side of the workbench 1, the hydraulic cylinder 3 is installed on the right side of the vertical plate 2, the mounting frame 4 is installed on the output end of the hydraulic cylinder 3, the bending head 5 is installed on the mounting frame 4 through the mounting mechanism, a mounting groove is provided on the top right side of the workbench 1, the bidirectional screw 6 is rotatably installed in the mounting groove of the workbench 1, the first motor 7 is installed on the front right side of the workbench 1, and the output end of the first motor 7 passes through the front end of the workbench 1 and connects with the bidirectional screw. The front end of the rod 6 is connected, and two sets of moving blocks 8 slide in the mounting slots of the workbench 1. The two sets of moving blocks 8 are respectively installed at the bottom of the two sets of moving frames 9. The middle of the two sets of moving blocks 8 is connected with threaded holes. The two sets of moving blocks 8 are threadedly connected to the bidirectional screw 6. Two sets of fixed arc-shaped clamping plates 10 are respectively installed at the bottom of the two sets of moving frames 9. Two sets of moving arc-shaped clamping plates 11 are respectively connected to the bottom of the two sets of screws 12. Two sets of threaded tubes are rotatably installed on the top of the two sets of moving frames 9. The two sets of threaded tubes are respectively threadedly connected to the two sets of screws 12. Two sets of motor plates 15 are installed on the top of the two sets of moving frames 9. Two sets of second motors 16 are respectively installed on the top of the two sets of motor plates 15. Two sets of rotating shafts 14 are respectively connected to the output ends of the two sets of second motors 16. Four sets of bevel gears 13 are respectively installed on the top of the two sets of threaded tubes and the inner ends of the two sets of rotating shafts 14. Each pair of corresponding bevel gears 13 meshes with each other.

[0022] The inner cylinder of the shock absorber is placed on two sets of fixed arc-shaped clamping plates 10, so that the bending position of the inner cylinder is located between the two sets of fixed arc-shaped clamping plates 10. Then, the first motor 7 is turned on, which drives the bidirectional screw 6 to rotate. The bidirectional screw 6 is threadedly connected to two sets of moving blocks 8. The two sets of moving blocks 8 drive the two sets of moving frames 9 to move inward. When the two sets of fixed arc-shaped clamping plates 10 are located on both sides of the bending position of the inner cylinder of the shock absorber, the two sets of second motors 16 are turned on. The two sets of second motors 16 drive the two sets of threaded tubes to rotate through two sets of rotating shafts 14 and four sets of bevel gears 13. The two sets of threaded tubes are connected to the two sets of moving frames 9. The screw 12 is threaded, and the two sets of screws 12 drive the two sets of moving arc-shaped clamping plates 11 to move downward. The two sets of moving arc-shaped clamping plates 11 and the two sets of fixed arc-shaped clamping plates 10 cooperate to clamp and fix the inner cylinder of the shock absorber. Then, according to the bending requirements of the inner cylinder of the shock absorber, a suitable bending head 5 is installed through the installation mechanism. Then, the hydraulic cylinder 3 is opened, and the hydraulic cylinder 3 drives the bending head 5 to move to the right. The bending head 5 then bends the inner cylinder of the shock absorber. By setting up this device, it is convenient to clamp and fix the inner cylinder of the shock absorber of different sizes, and it is also convenient to replace the bending head 5 as needed, reducing its usage limitations.

[0023] As a preferred embodiment of the above, the installation mechanism includes an installation rod 17, a nut 18 and a limiting plate 28. The installation rod 17 is installed on the mounting frame 4, the limiting plate 28 is installed at the bottom of the installation rod 17, the top of the installation rod 17 is provided with a thread, the bent head 5 is inserted into the installation rod 17, and the nut 18 is threadedly connected to the installation rod 17.

[0024] By setting up the mounting rod 17, nut 18 and limiting plate 28, a suitable bending head 5 is inserted into the mounting rod 17, and the limiting plate 28 limits the bending head 5. Then, the nut 18 is rotated, and the nut 18 is threadedly connected to the mounting rod 17, and the nut 18 fixes the bending head 5, making it easy to replace the bending head 5.

[0025] As a preferred embodiment of the above, it further includes two sets of first gears 19, two sets of fixed plates 20, two sets of rotating rods 21, two sets of second gears 22, and two sets of handwheels 23. The two sets of first gears 19 are respectively mounted on two sets of rotating shafts 14, and the two sets of first gears 19 mesh with the two sets of second gears 22 respectively. The two sets of second gears 22 are respectively mounted on the two sets of rotating rods 21. The two sets of rotating rods 21 are rotatably mounted on the two sets of fixed plates 20. The two sets of fixed plates 20 are respectively mounted on the top of the two sets of movable frames 9, and the two sets of handwheels 23 are respectively mounted on the outer ends of the two sets of rotating rods 21.

[0026] By setting up a first gear 19, a fixed plate 20, a rotating rod 21, a second gear 22, and a handwheel 23, when the second motor 16 malfunctions, the handwheel 23 drives the rotating rod 21 to rotate. The rotating rod 21 then causes the second gear 22 to mesh with the first gear 19. The first gear 19 drives the rotating shaft 14 to rotate, thereby meshing the two sets of bevel gears 13. The threaded tube is then threadedly connected to the screw 12. If the second motor 16 malfunctions, the moving arc-shaped clamping plate 11 can still be manually controlled to clamp the inner cylinder of the shock absorber.

[0027] As a preferred embodiment of the above, it further includes two sets of limiting blocks 24, which are respectively installed on the top ends of the two sets of screws 12;

[0028] By setting the limit block 24, the screw 12 can be limited.

[0029] As a preferred embodiment of the above embodiment, it also includes four sets of guide rods 25. The four sets of guide rods 25 are respectively installed on the left and right sides of the top of the two sets of movable arc-shaped clamps 11. Sliding holes are provided on the left and right sides of the top of the two sets of movable frames 9. The four sets of guide rods 25 are slidably connected to the four sets of sliding holes of the two sets of movable frames 9.

[0030] By setting the guide rod 25, the moving arc-shaped clamp 11 can be guided and stabilized.

[0031] As a preferred embodiment of the above embodiment, it also includes two sets of support plates 26, which are respectively installed on the top of two sets of movable frames 9, and the two sets of support plates 26 are respectively rotatably connected to two sets of rotating shafts 14.

[0032] By setting the support plate 26, the rotating shaft 14 can be supported, thereby improving its stability.

[0033] As a preferred embodiment of the above, pressure sensors are provided at the inner ends of both sets of moving arc-shaped clamps 11;

[0034] This facilitates the detection of the clamping pressure of the two sets of dynamic arc-shaped clamping plates 11 on the inner cylinder of the shock absorber, and avoids damage to the inner cylinder of the shock absorber due to excessive pressure.

[0035] As a preferred embodiment of the above, an alarm 27 is also included. The alarm 27 is installed on the top of the workbench 1 and is electrically connected to two sets of pressure sensors.

[0036] By setting the alarm 27, when the pressure sensor reaches the set value, the alarm 27 will sound an alarm, which can be used to notify the staff.

[0037] This utility model discloses a bending device for the inner cylinder of a shock absorber. During operation, the inner cylinder of the shock absorber is first placed on two sets of fixed-arc clamps 10, with the bending position of the inner cylinder located between the two sets of fixed-arc clamps 10. Then, the first motor 7 is turned on, driving the bidirectional screw 6 to rotate. The bidirectional screw 6 is threadedly connected to two sets of moving blocks 8, which in turn drive two sets of moving frames 9 to move inward. When the two sets of fixed-arc clamps 10 are positioned on both sides of the bending position of the inner cylinder, the two sets of second motors 16 are turned on. The two sets of second motors 16 drive the two sets of threaded tubes to rotate via two sets of rotating shafts 14 and four sets of bevel gears 13. The two sets of threaded pipes are threadedly connected to the two sets of screws 12. The two sets of screws 12 drive the two sets of moving arc-shaped clamps 11 to move downward. The two sets of moving arc-shaped clamps 11 and the two sets of fixed arc-shaped clamps 10 cooperate to clamp and fix the inner cylinder of the shock absorber. Then, according to the bending requirements of the inner cylinder of the shock absorber, a suitable bending head 5 is inserted into the mounting rod 17. The limiting plate 28 limits the bending head 5. Then, the nut 18 is rotated. The nut 18 is threadedly connected to the mounting rod 17 and fixes the bending head 5. Then, the hydraulic cylinder 3 is opened. The hydraulic cylinder 3 drives the bending head 5 to move to the right, and the bending head 5 bends the inner cylinder of the shock absorber.

[0038] The bending device for the inner cylinder of a shock absorber according to this utility model has common mechanical methods in terms of installation, connection or setting. As long as it can achieve its beneficial effect, it can be implemented. The hydraulic cylinder 3, the first motor 7 and the second motor 16 of the bending device for the inner cylinder of a shock absorber according to this utility model are purchased from the market. Technical personnel in this industry only need to install and operate it according to the accompanying instruction manual.

[0039] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A bending device for the inner cylinder of a shock absorber, characterized in that, The system includes a workbench (1), a vertical plate (2), a hydraulic cylinder (3), a mounting bracket (4), a bending head (5), a bidirectional screw (6), a first motor (7), two sets of moving blocks (8), two sets of moving frames (9), two sets of fixed arc-shaped clamps (10), two sets of moving arc-shaped clamps (11), two sets of screws (12), four sets of bevel gears (13), two sets of rotating shafts (14), two sets of motor plates (15), two sets of second motors (16), and a mounting mechanism. The vertical plate (2) is installed on the left side of the top of the workbench (1), the hydraulic cylinder (3) is installed on the right side of the vertical plate (2), the mounting bracket (4) is installed on the output end of the hydraulic cylinder (3), the bending head (5) is installed on the mounting bracket (4) through the mounting mechanism, a mounting groove is provided on the right side of the top of the workbench (1), the bidirectional screw (6) is rotatably installed in the mounting groove of the workbench (1), the first motor (7) is installed on the right side of the front end of the workbench (1), and the output end of the first motor (7) passes through the front end of the workbench (1) and intersects with the bidirectional screw (6). The front end is connected, and two sets of moving blocks (8) slide in the mounting slot of the workbench (1). The two sets of moving blocks (8) are respectively installed at the bottom of the two sets of moving frames (9). The middle of the two sets of moving blocks (8) is connected with threaded holes. The two sets of moving blocks (8) are threadedly connected to the bidirectional screw (6). The two sets of fixed arc-shaped clamps (10) are respectively installed at the bottom of the two sets of moving frames (9). The two sets of moving arc-shaped clamps (11) are respectively connected to the bottom of the two sets of screws (12). The two sets of threaded tubes are rotatably installed. The top of the two sets of movable frames (9) is connected to the two sets of screws (12) by threads. The two sets of motor plates (15) are installed on the top of the two sets of movable frames (9). The two sets of second motors (16) are installed on the top of the two sets of motor plates (15) respectively. The two sets of rotating shafts (14) are connected to the output ends of the two sets of second motors (16) respectively. The four sets of bevel gears (13) are installed on the top of the two sets of threaded pipes and the inner ends of the two sets of rotating shafts (14) respectively. The two sets of corresponding bevel gears (13) mesh with each other.

2. The bending device for the inner cylinder of a shock absorber as described in claim 1, characterized in that, The mounting mechanism includes a mounting rod (17), a nut (18), and a limiting plate (28). The mounting rod (17) is mounted on the mounting bracket (4), the limiting plate (28) is mounted on the bottom of the mounting rod (17), the top of the mounting rod (17) is threaded, the bent head (5) is inserted into the mounting rod (17), and the nut (18) is threaded into the mounting rod (17).

3. A bending device for the inner cylinder of a shock absorber as described in claim 2, characterized in that, It also includes two sets of first gears (19), two sets of fixed plates (20), two sets of rotating rods (21), two sets of second gears (22) and two sets of handwheels (23). The two sets of first gears (19) are respectively mounted on two sets of rotating shafts (14). The two sets of first gears (19) mesh with the two sets of second gears (22). The two sets of second gears (22) are respectively mounted on two sets of rotating rods (21). The two sets of rotating rods (21) are rotatably mounted on two sets of fixed plates (20). The two sets of fixed plates (20) are respectively mounted on the top of two sets of movable frames (9). The two sets of handwheels (23) are respectively mounted on the outer ends of the two sets of rotating rods (21).

4. A bending device for the inner cylinder of a shock absorber as described in claim 3, characterized in that, It also includes two sets of limiting blocks (24), which are respectively installed on the top of the two sets of screws (12).

5. A bending device for the inner cylinder of a shock absorber as described in claim 4, characterized in that, It also includes four sets of guide rods (25), which are installed on the left and right sides of the top of the two sets of moving arc clamps (11). The left and right sides of the top of the two sets of moving frames (9) are provided with sliding holes, and the four sets of guide rods (25) are slidably connected to the four sets of sliding holes of the two sets of moving frames (9).

6. A bending device for the inner cylinder of a shock absorber as described in claim 5, characterized in that, It also includes two sets of support plates (26), which are respectively installed on the top of two sets of movable frames (9), and the two sets of support plates (26) are respectively rotatably connected to two sets of rotating shafts (14).

7. A bending device for the inner cylinder of a shock absorber as described in claim 6, characterized in that, Pressure sensors are provided at the inner ends of both sets of moving arc-shaped clamps (11).

8. A bending device for the inner cylinder of a shock absorber as described in claim 7, characterized in that, It also includes an alarm (27), which is installed on the top of the workbench (1) and is electrically connected to two sets of pressure sensors.