A rigid suspension for use on heavy duty vehicles
By designing anti-slip components in the rigid suspension of heavy-duty vehicles, and utilizing the cooperation of limit heads and springs, the problem of loosening and slipping of the center axle nut is solved, thereby improving the safety and reliability of the suspension.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO KAIMA CONSTR MASCH MFG CO LTD
- Filing Date
- 2025-07-25
- Publication Date
- 2026-06-26
AI Technical Summary
The center axle nuts of rigid suspensions in existing heavy-duty vehicles are prone to loosening and slipping off during vibration, posing a safety hazard.
An anti-slip assembly was designed, including a limiting head, a rotating bar, a moving block, and a spring. By cooperating with the limiting head and the limiting hole, the elastic force of the spring is used to keep the central shaft nut fixed and prevent it from loosening and slipping off.
This effectively prevents the central shaft nut from loosening and slipping during vibration, reducing safety hazards and improving the reliability and safety of the suspension.
Smart Images
Figure CN224408860U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of suspension technology, specifically a rigid suspension that can be used in heavy-duty vehicles. Background Technology
[0002] A rigid suspension system for heavy-duty vehicles is an integrated suspension system combining high-strength load-bearing capacity and dynamic stability. Its core, through an integrated rigid frame and multi-directional force transmission mechanism, evenly distributes vehicle loads to the chassis and running gear. Simultaneously, utilizing built-in elastic buffer units and geometric constraint structures, it effectively absorbs road impacts and suppresses vehicle pitch / roll while ensuring extremely high deformation resistance. This system abandons the flexible connection mode of traditional suspensions, employing mechanical interlocking and material reinforcement technologies to significantly improve structural reliability and durability under heavy-duty conditions. Its applications cover scenarios requiring long-term exposure to extremely heavy loads and complex road conditions, such as mining vehicles, heavy construction machinery, port container tractors, and military equipment transport platforms. It is particularly suitable for heavy logistics and operational tasks sensitive to vehicle stability, uptime, and total lifecycle costs.
[0003] An existing patent (publication number: CN220281059U) discloses a rigid suspension mechanism. This suspension combines a first rectangular tube and a second rectangular tube to form a balanced beam with an "A"-shaped structure, thereby making the force on the rigid suspension more reasonable and balanced, preventing local stress fatigue of the rigid suspension, and thus meeting the requirements of lightweight while ensuring structural strength. However, the central shaft nut of this suspension does not have anti-slip capability, which can cause the central shaft nut to loosen and slip off during vibration during use, posing a great safety hazard. Utility Model Content
[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a rigid suspension that can be used in heavy-duty vehicles. It effectively solves the problem that the central axle nut of the existing suspension does not have anti-slip capability, which causes the central axle nut to loosen and slip off during vibration during use, posing a great safety hazard.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a rigid suspension that can be used in heavy-duty vehicles, comprising a rigid suspension body, a central axle sleeve fixedly installed in the middle of the rigid suspension body, a central axle rotatably installed inside the central axle sleeve, a washer fitted on one end surface of the central axle, a fixing nut threadedly locked on one side of the washer and on the surface of the central axle, a mounting plate fixedly installed on one side of the front of the rigid suspension body, a limit hole opened on one side of the fixing nut, a mounting block fixedly installed on one side of the front of the mounting plate, a connecting block fixedly installed on one side of the mounting block, a positioning hole opened in the middle of the side of the connecting block away from the mounting block, an inclined surface opened on one side of the connecting block, a limit head inserted into the positioning hole, and an anti-slip component provided on the other side of the front of the mounting plate, the anti-slip component being connected to the limit head.
[0006] Preferably, the anti-slip assembly includes two fixed seats, which are fixedly installed on the other side of the front of the mounting plate. A rotating shaft is rotatably installed between the two fixed seats. A rotating strip is fixedly installed on the surface of the rotating shaft. An installation groove is opened at the end of the rotating strip away from the rotating shaft, and a limiting head is movably inserted into one end of the installation groove.
[0007] Preferably, a movable block is provided at one end of the mounting groove, a spring is fixedly installed on one side of the movable block, the end of the spring away from the movable block is fixedly connected to the inner wall of one end of the mounting groove, and the side of the movable block away from the spring is fixedly connected to the limiting head.
[0008] Preferably, two limiting blocks are symmetrically fixedly installed on the circumference of the movable block, and two limiting grooves are opened on the inner wall of the mounting groove. The two limiting blocks are slidably installed inside the two limiting grooves. A sliding groove is opened at one end of the front of the rotating bar, and a slider is slidably installed inside the sliding groove. One side of the slider is fixedly connected to the circumference of the movable block, and a handle is fixedly installed on the other side of the slider.
[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: During installation, the operator inserts the central shaft into the central shaft sleeve, then puts on the washer and tightens it with the threaded fixing nut. Then, the operator drives the slider to slide inside the slide groove by using the handle. When the slider moves, it drives the moving block to move into the installation groove. When the moving block moves, it drives the two limit blocks to move along the two limit grooves and simultaneously compresses the spring. When the moving block moves, it pulls the limit head out of the positioning hole.
[0010] The operator then rotates the rotating bar around the axis of rotation at a certain angle, aligning the limiting head with the limiting hole on the fixed nut. The operator then releases the handle, which, under the elastic force of the spring, pushes the moving block, causing the moving block to push the limiting head into the limiting hole to limit the nut and prevent it from loosening due to vibration. This gives the central shaft nut of the suspension anti-slip capability, preventing it from loosening and slipping off during vibration, thus reducing safety hazards. Attached Figure Description
[0011] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.
[0012] In the attached diagram:
[0013] Figure 1 This is a schematic diagram of a rigid suspension structure that can be used in heavy-duty vehicles according to this utility model. Figure 1 ;
[0014] Figure 2 This is a schematic diagram of a rigid suspension structure that can be used in heavy-duty vehicles according to this utility model. Figure 2 ;
[0015] Figure 3 This is a schematic diagram of the positioning hole structure of this utility model;
[0016] Figure 4 This utility model Figure 1 Enlarged structural diagram at point A in the middle;
[0017] Figure 5 This is a schematic diagram of the internal structure of the rotating bar of this utility model;
[0018] In the diagram: 1. Rigid suspension body; 2. Central shaft sleeve; 3. Central shaft; 4. Washer; 5. Fixing nut; 6. Mounting plate; 7. Limiting hole; 8. Mounting block; 9. Connecting block; 10. Positioning hole; 11. Inclined surface; 12. Limiting head; 13. Fixing seat; 14. Rotating shaft; 15. Rotating bar; 16. Mounting groove; 17. Moving block; 18. Limiting block; 19. Limiting groove; 20. Spring; 21. Slider; 22. Handle; 23. Slide groove. Detailed Implementation
[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0020] Depend on Figures 1 to 5The present invention includes a rigid suspension body 1, a central shaft sleeve 2 fixedly installed in the middle of the rigid suspension body 1, a central shaft 3 rotatably installed inside the central shaft sleeve 2, a washer 4 sleeved on one end surface of the central shaft 3, a fixing nut 5 threadedly locked on one side of the washer 4 and on the surface of the central shaft 3, a mounting plate 6 fixedly installed on one side of the front of the rigid suspension body 1, a limit hole 7 opened on one side of the fixing nut 5, a mounting block 8 fixedly installed on one side of the front of the mounting plate 6, a connecting block 9 fixedly installed on one side of the mounting block 8, a positioning hole 10 opened in the middle of the side of the connecting block 9 away from the mounting block 8, a bevel 11 opened on one side of the connecting block 9, a limit head 12 inserted into the positioning hole 10, and an anti-slip component provided on the other side of the front of the mounting plate 6, the anti-slip component being connected to the limit head 12.
[0021] During installation, the operator inserts the central shaft 3 into the central shaft sleeve 2, then puts on the washer 4 and tightens the screw thread of the fixing nut 5. Next, the operator adjusts the anti-slip component so that the limiting head 12 is aligned with the limiting hole 7 on the fixing nut 5, and the limiting head 12 is engaged inside the limiting hole 7 to limit the nut and prevent it from loosening due to vibration. This gives the central shaft nut of the suspension anti-slip capability, preventing it from loosening and slipping off during vibration, thus reducing safety hazards.
[0022] The anti-slip assembly includes two fixed seats 13, which are fixedly installed on the other side of the front of the mounting plate 6. A rotating shaft 14 is rotatably installed between the two fixed seats 13. A rotating strip 15 is fixedly installed on the surface of the rotating shaft 14. A mounting groove 16 is opened at the end of the rotating strip 15 away from the rotating shaft 14. A limiting head 12 is movably inserted into one end of the mounting groove 16. A moving block 17 is provided at one end inside the mounting groove 16. A spring 20 is fixedly installed on one side of the moving block 17. The end of the spring 20 away from the moving block 17 is fixedly connected to the inner wall of one end of the mounting groove 16. The side of the moving block 17 away from the spring 20 is fixedly connected to the limiting head 12.
[0023] Two limiting blocks 18 are symmetrically fixedly installed on the circumference of the movable block 17. Two limiting grooves 19 are opened on the inner wall of the mounting groove 16. The two limiting blocks 18 are slidably installed inside the two limiting grooves 19. A sliding groove 23 is opened at one end of the front of the rotating bar 15. A slider 21 is slidably installed inside the sliding groove 23. One side of the slider 21 is fixedly connected to the circumference of the movable block 17, and a handle 22 is fixedly installed on the other side of the slider 21.
[0024] The operator drives the slider 21 to slide inside the slide groove 23 by using the handle 22. When the slider 21 moves, it drives the moving block 17 to move into the mounting groove 16. When the moving block 17 moves, it drives the two limit blocks 18 to move along the two limit grooves 19, and at the same time, it squeezes the spring 20. When the moving block 17 moves, it pulls the limit head 12 out of the positioning hole 10.
[0025] Then the operator rotates the rotating bar 15 180° around the rotating shaft 14 as the center, so that the limiting head 12 is aligned with the limiting hole 7 on the fixed nut 5. Then the operator releases the handle 22, so that the moving block 17 is pushed by the elastic force of the spring 20, so that the moving block 17 pushes the limiting head 12 into the limiting hole 7 to limit the nut.
Claims
1. A rigid suspension applicable to heavy duty vehicles, comprising a rigid suspension body (1), characterized in that: A central shaft sleeve (2) is fixedly installed in the middle of the rigid suspension body (1). A central shaft (3) is rotatably installed inside the central shaft sleeve (2). A washer (4) is fitted on one end surface of the central shaft (3). A fixing nut (5) is threadedly locked on one side of the washer (4) and on the surface of the central shaft (3). A mounting plate (6) is fixedly installed on one side of the front of the rigid suspension body (1). A limit hole (7) is opened on one side of the fixing nut (5). A mounting block (8) is fixedly installed on one side of the front of the mounting plate (6). A docking block (9) is fixedly installed on one side of the mounting block (8). A positioning hole (10) is opened in the middle of the docking block (9) away from the mounting block (8). A slope (11) is opened on one side of the docking block (9). A limit head (12) is inserted into the positioning hole (10). An anti-slip component is provided on the other side of the front of the mounting plate (6). The anti-slip component is connected to the limit head (12).
2. A rigid suspension for use on heavy duty vehicles as claimed in claim 1 wherein: The anti-slip assembly includes two fixed seats (13). The fixed seats (13) are fixedly installed on the other side of the front of the mounting plate (6). A rotating shaft (14) is rotatably installed between the two fixed seats (13). A rotating strip (15) is fixedly installed on the surface of the rotating shaft (14). An installation groove (16) is opened at one end of the rotating strip (15) away from the rotating shaft (14). A limiting head (12) is movably inserted into one end of the installation groove (16).
3. A rigid suspension for heavy-duty vehicles according to claim 2, characterized in that: One end of the mounting groove (16) is provided with a movable block (17), and a spring (20) is fixedly installed on one side of the movable block (17). The end of the spring (20) away from the movable block (17) is fixedly connected to the inner wall of one end of the mounting groove (16), and the side of the movable block (17) away from the spring (20) is fixedly connected to the limiting head (12).
4. A rigid suspension for heavy-duty vehicles according to claim 3, characterized in that: Two limiting blocks (18) are symmetrically fixedly installed on the circumference of the moving block (17). Two limiting grooves (19) are opened on the inner wall of the mounting groove (16). The two limiting blocks (18) are slidably installed inside the two limiting grooves (19). A sliding groove (23) is opened at one end of the front of the rotating bar (15). A slider (21) is slidably installed inside the sliding groove (23). One side of the slider (21) is fixedly connected to the circumference of the moving block (17). A handle (22) is fixedly installed on the other side of the slider (21).