Mechanical suspension system capable of preventing rotation during bolt fastening

Abstract

The invention relates to the field of mechanical suspension systems, in particular to an anti-rotation type mechanical suspension system during bolt fastening, which comprises a plurality of suspension frame bodies arranged at intervals and spring devices for connecting the adjacent suspension frame bodies, and the spring devices are stably connected through connecting frame bodies with anti-rotation structures. The anti-rotation structure is composed of a torsion base and an anti-rotation pull rod and is matched with a semi-ring beam, a locking buckle plate and an abutting pipe to form a reliable locking mechanism, and the phenomenon of rotation and loosening in the bolt fastening process is effectively prevented. Meanwhile, the connecting mode between the pull rod bush and the base plate is optimized, and the stability is enhanced by introducing the design of the anti-rotation boss. According to the mechanical suspension system, the anti-torsion performance and the overall reliability of the mechanical suspension system are remarkably improved, stable operation of equipment is ensured, and the service life is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of mechanical suspension systems, and in particular to a mechanical suspension system that prevents deformation when bolts are tightened. Background Art

[0002] The semi-trailer mechanical suspension system is a key component of heavy-duty vehicles. Its main function is to improve the vehicle's load capacity and stability during driving.

[0003] In order to cope with complex road conditions and high load challenges, the industry generally adopts a variety of mechanisms to enhance the performance of the suspension system. For example, leaf springs are used to absorb road impact, shock absorbers are used to reduce vibration amplitude, balance beams are used to achieve coordinated operation of the wheels on both sides, and adjustment mechanisms are used to dynamically adapt to changes in vehicle height under different load conditions. In addition, in the actual assembly process, the connection between the bolts and the tie rod bushings is usually completed by manual operation, but this link often lacks effective anti-rotation measures.

[0004] However, the current mechanical suspension system for semi-trailers has obvious shortcomings, which are as follows: during the installation process, due to the lack of necessary anti-rotation structure design, the bolts are prone to accidental rotation, which in turn affects the tightening operation and tightening effect. Summary of the invention

[0005] In order to prevent the phenomenon of rotation and loosening during the bolt tightening process during the installation of the mechanical structure, the present application provides a mechanical suspension system that prevents rotation during the bolt tightening process.

[0006] The present application provides a mechanical suspension system that prevents deformation during bolt tightening, which adopts the following technical solution: A mechanical suspension system that prevents deformation when bolts are tightened, comprising a plurality of suspension frames arranged at intervals, wherein a spring device is connected between two adjacent suspension frames; Each of the spring devices is provided with a connecting frame, and each of the connecting frames is provided with an anti-rotation structure; the anti-rotation structure comprises a torsion base, and an anti-rotation pull rod hinged to one end of the torsion base, the torsion base is provided on the connecting frame, and one end of the anti-rotation pull rod away from the connecting frame is rotatably connected to the bottom of the adjacent suspension frame; The connecting frame includes a semi-ring beam, a locking buckle plate and a pressing tube, wherein the locking buckle plate is located at one end of the spring device, and the pressing tube is located at the other end of the spring device; The torsion base is located between the pressure tube and the spring device, and semi-ring beams are provided on both sides of the spring device, and the two semi-ring beams are both sleeved outside the pressure tube, and the ends of the semi-ring beams pass through the torsion base and the locking buckle plate and are connected with locking pieces, and the locking pieces are used to lock the semi-ring beams.

[0007] By adopting the above technical solution and setting an anti-rotation structure on the connecting frame, the problem of loosening caused by rotation of the structure during locking and subsequent use can be effectively prevented. In addition, the design of the torsion base and the anti-rotation pull rod in the anti-rotation structure can also disperse the force of the suspension system to a certain extent, avoiding excessive stress on a single component, thereby improving the overall stability. The connecting frame is composed of a semi-ring beam, a locking buckle plate and a pressure tube. This design not only enhances the strength of the connection part, but also facilitates assembly and maintenance. The semi-ring beam is sleeved outside the pressure tube and fixed by a locking member, which further improves the reliability of the connection and ensures that it can still maintain a good working condition under complex road conditions.

[0008] Optionally, the torsion base includes a hinged support at one end, and the anti-rotation pull rod includes a pull rod body and pull rod bushings arranged at both ends of the pull rod body; One of the tie rod bushings is clamped into the hinge support, and the other tie rod bushing is clamped to the bottom of the suspension frame. Both sides of the hinge support are provided with a first pad, and both sides of the suspension frame are provided with a second pad; Each of the tie rod bushings is provided with a locking bolt, and one of the locking bolts sequentially passes through the two first pads and the corresponding tie rod bushing and is threadedly connected with a locking nut; Another locking bolt is also threadedly connected with a locking nut after passing through the two second pads and the corresponding tie rod bushing.

[0009] By adopting the above technical solution, the two ends of the anti-rotation tie rod are connected to the hinged support of the torsion base and the bottom of the suspension frame through the tie rod bushing. This design effectively prevents the anti-rotation tie rod from unexpectedly rotating during the force application process, thereby improving the stability of the system. The provision of the first pad and the second pad improves the connection stability of the connection part and further enhances the structural strength. The use of the locking bolt and the locking nut realizes the reliable fixation of the tie rod bushing, avoids loosening caused by vibration, and significantly improves the reliability of the mechanical suspension system.

[0010] Optionally, the locking bolt includes a bolt head and a screw segment, an anti-rotation boss is arranged between the bolt head and the screw segment, and the first pad and the second pad are both provided with a rotation-stop hole for the anti-rotation boss to be clamped.

[0011] By adopting the above technical solution, an anti-rotation boss is arranged between the bolt head and the screw section of the locking bolt, and a stop hole for the anti-rotation boss to engage is opened on the first pad and the second pad. The cooperation between the anti-rotation boss and the stop hole limits the circumferential movement of the locking bolt, ensures the stability of the locking nut when tightening, avoids loosening caused by vibration or external force, and effectively prevents the locking bolt from rotating during the tightening process. The loosening problem caused by the rotation of the locking bolt in the traditional structure is solved, and the reliability and stability of the connection part are improved.

[0012] Optionally, both ends of the pull rod body are provided with adjusting screws, and each pull rod bushing is provided with a threaded sleeve at one end close to the pull rod body, and the adjusting screw is threadably connected in an adjacent threaded sleeve.

[0013] By adopting the above technical solution, the length of the pull rod body is adjustable. The threaded connection design between the adjusting screw and the threaded sleeve allows the length of the anti-rotation pull rod to be accurately adjusted according to the actual working conditions, thereby adapting to the distance changes between different suspension frames. This structural adjustment not only improves the versatility and adaptability of the system, but also can compensate for manufacturing errors or assembly deviations to a certain extent, further improving the stability and reliability of the entire mechanical suspension system.

[0014] Optionally, an elastic pad is fixed on the inner side of the semi-ring beam, and the elastic pad abuts against the pressure tube.

[0015] By adopting the above technical solution, the setting of the elastic pad can effectively increase the friction between the semi-ring beam and the pressure tube, preventing the pressure tube from sliding or shifting during operation, thereby improving the stability of the entire connecting frame. In addition, the elastic pad can also buffer external impact forces to a certain extent, protect the semi-ring beam and the pressure tube from damage, and extend the service life of the components.

[0016] Optionally, the spring device comprises a leaf spring.

[0017] By adopting the above technical solution, the high strength and good elasticity of the leaf spring can be used to effectively absorb the vibration and impact generated during vehicle driving, thereby improving the load-bearing capacity and stability of the suspension system. At the same time, the application of the leaf spring simplifies the structural assembly process, reduces manufacturing costs, and further improves the reliability and durability of the entire system.

[0018] Optionally, it also includes a suspension adjustment mechanism, which includes a strain sensor and an auxiliary suspension device. A number of the strain sensors are arranged at intervals on the leaf spring, and each suspension frame is provided with an auxiliary suspension device. The auxiliary suspension device is telecommunication-connected to a control module, and the control module is used to control the start and stop of the auxiliary suspension device. Each of the strain sensors is telecommunication-connected to the control module.

[0019] By adopting the above technical solution, the addition of the suspension adjustment mechanism realizes the intelligent management of the suspension system. The strain sensor can monitor the stress conditions of different positions of the leaf spring in real time and transmit the data to the control module. The control module automatically adjusts the working state of the auxiliary suspension device according to these data, thereby achieving dynamic load balancing and effectively solving the problem of local wear caused by uneven load distribution. Furthermore, it also improves the stability and comfort of the vehicle during driving and extends the service life of the suspension system.

[0020] Optionally, the auxiliary suspension device includes air springs, each of the air springs is connected to an inflation pipe, and the inflation pipe is connected to an air supply source; each air spring is provided with an exhaust valve, and the exhaust valve and the air supply source are both electrically connected to the control module.

[0021] By adopting the above technical solution and using air springs as auxiliary suspension devices, the support force at different positions of the suspension system can be dynamically adjusted according to the actual load conditions, effectively alleviating the fatigue problem of the leaf spring caused by long-term high pressure, and improving the durability of the overall suspension system. The connection design between the inflation tube and the air supply source, combined with the precise control of the exhaust valve, can quickly replenish or release gas when needed, thereby flexibly adapting to the suspension requirements under different road conditions and load conditions. In addition, since the exhaust valve and the air supply source are both controlled by the control module, the entire system is automatically managed, which not only improves the convenience of operation, but also significantly enhances the stability and comfort of the vehicle during driving.

[0022] Optionally, the anti-rotation boss is configured to be in a square shape.

[0023] By adopting the above technical solution, the anti-rotation boss is configured in a block shape, which can effectively prevent the locking bolt from rotating during the tightening process.

[0024] In summary, the present application includes at least one of the following beneficial effects: 1. The anti-rotation structure in the present application effectively prevents the locking bolt from accidentally rotating during the tightening process through the design of the torsion base and the anti-rotation pull rod, thereby improving the reliability of the connection and solving the loosening problem caused by the lack of anti-rotation measures in the traditional suspension system; 2. The use of the connecting frame and the anti-rotation structure in the present application ensures a stable connection between the spring device and the suspension frame, reduces local wear caused by uneven load distribution, and extends the service life of the system; 3. The overall design of this application optimizes the stability of the mechanical suspension system, improves the driving performance of the semi-trailer under complex road conditions and the safety of cargo transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the anti-transformation mechanical suspension system when the bolts are tightened in Example 1 of the present application; Figure 2 It is a schematic diagram of the partial explosion structure of the anti-transformation mechanical suspension system when the bolts are tightened in Example 1 of the present application; Figure 3 yes Figure 2 A schematic diagram of the local enlarged structure at point A in the middle; Figure 4 is a schematic diagram of the structure of the locking bolt in Example 1 of the present application; Figure 5 It is a schematic diagram of the overall structure of the anti-transformation mechanical suspension system when the bolts are tightened in Example 2 of the present application; Explanation of the reference numerals in the accompanying drawings: 1. Suspension frame; 2. Leaf spring; 3. Connecting frame; 31. Semi-ring beam; 311. Arc beam section; 312. Vertical beam section; 32. Locking buckle plate; 33. Pressure tube; 34. Elastic pad; 4. Anti-rotation structure; 41. Torsion base; 411. Articulated support; 42. Anti-rotation pull rod; 421. Pull rod body; 4211. Adjusting screw; 422. Pull rod bushing; 4221. Threaded sleeve; 43. First pad; 44. Second pad; 45. Locking bolt; 451. Bolt head; 452. Screw section; 453. Anti-rotation boss; 46. Locking nut; 47. Stop hole; 5. Locking piece; 6. Strain sensor; 7. Auxiliary suspension device; 71. Air spring; 72. Inflatable pipe; 73. Air supply source; 74. Exhaust valve. DETAILED DESCRIPTION

[0026] The following is combined with Figure 1-5 This application is described in further detail.

[0027] Embodiment 1:

[0028] Reference Figure 1 , Embodiment 1 of the present application provides a mechanical suspension system that prevents deformation when bolts are tightened, including a suspension frame 1, a spring device and a connecting frame 3. Multiple suspension frames 1 are arranged at intervals along the same straight line, and a spring device is connected between two adjacent suspension frames 1. Multiple connecting frames 3 are provided, and are arranged one-to-one with the spring devices and connected to the corresponding spring devices. In this embodiment, four suspension frames 1 are provided, and correspondingly, three spring devices and connecting frames 3 are provided. The suspension frame 1 located at the end is different in shape from the suspension frame 1 located in the middle, and connecting ears are fixed on both sides of the two suspension frames 1 located in the middle. The spring device specifically adopts a leaf spring 2. Due to its unique stacked structure, the leaf spring 2 can maintain good elasticity and stability while bearing a large load.

[0029] In other embodiments, connecting ears may also be provided on all the suspension frames 1 .

[0030] Reference Figure 2 and Figure 3 The connecting frame 3 includes a semi-ring beam 31, a locking buckle plate 32 and a pressure tube 33. Semi-ring beams 31 are arranged on both sides of the leaf spring 2. The two semi-ring beams 31 are arranged in parallel. The semi-ring beam 31 includes an arc-shaped beam section 311 and vertical beam sections 312 integrally formed at both ends of the arc-shaped beam section 311. The locking buckle plate 32 is located at the top of the leaf spring 2, and the pressure tube 33 is located at the bottom of the leaf spring 2, and the locking buckle plate 32 is arranged opposite to the pressure tube 33. The two semi-ring beams 31 are sleeved outside the pressure tube 33, and elastic pads 34 are fixed on the inner side of each arc-shaped beam section 311, and the elastic pads 34 are tightly fitted with the bottom of the pressure tube 33 to reduce the pressure concentration on the contact surface. One end of each vertical beam section 312 passes through the torsion base 41 and the locking buckle plate 32 and is connected to a locking member 5. The locking member 5 can be a hexagonal nut or a nut, etc., which is used to firmly lock the semi-ring beam 31 and the pressure tube 33 on the leaf spring 2.

[0031] Reference Figure 2 and Figure 3 , each connecting frame 3 is provided with an anti-rotation structure 4. The anti-rotation structure 4 includes a torsion base 41 and an anti-rotation pull rod 42 hinged to one end of the torsion base 41. The torsion base 41 is provided on the connecting frame 3, and one end of the anti-rotation pull rod 42 away from the connecting frame 3 is rotatably connected to the bottom of the adjacent suspension frame 1, thereby preventing the loosening caused by rotation during the locking process.

[0032] Specifically, the torsion base 41 is located between the pressure tube 33 and the leaf spring 2, and four through holes are opened on the torsion base 41, and the through holes are arranged one by one corresponding to the vertical beam sections 312, and the vertical beam sections 312 are inserted into the through holes. The torsion base 41 includes a hinged support 411 arranged at the end, and the anti-rotation pull rod 42 includes a pull rod body 421 and pull rod bushings 422 at both ends; in this embodiment, the pull rod bushing 422 is set to be cylindrical. Among them, one pull rod bushing 422 is clamped into the hinged support 411, and the other pull rod bushing 422 is clamped to the bottom of the adjacent suspension frame 1. In addition, the first pads 43 are provided on both sides of the hinged support 411, and the second pads 44 are provided on both sides of the suspension frame 1. A locking bolt 45 is provided on each tie rod bushing 422. One locking bolt 45 passes through a first pad 43, a corresponding tie rod bushing 422 and another first pad 43 in sequence and is then threadedly connected to a locking nut 46; another locking bolt 45 passes through a second pad 44, a corresponding tie rod bushing 422 and another second pad 44 in sequence and is also threadedly connected to a locking nut 46.

[0033] Reference Figure 3 and Figure 4The locking bolt 45 includes a bolt head 451 and a screw rod section 452. An anti-rotation boss 453 is fixedly connected between the bolt head 451 and the screw rod end. The first pad 43 and the second pad 44 are both provided with a rotation-stopping hole 47 for the anti-rotation boss 453 to engage with, thereby effectively preventing the locking bolt 45 from accidentally rotating after being locked. Figure 2 and Figure 5 In this embodiment, three anti-rotation rods 42 are specifically provided. In the middle anti-rotation rod 42, both ends of the rod body 421 are integrally formed with adjusting screws 4211, and each rod bushing 422 is fixed with a threaded sleeve 4221 at one end close to the rod body 421, and the adjusting screw 4211 is threadedly connected to the inside of the adjacent threaded sleeve 4221, so as to realize the adjustable function of the anti-rotation rod 42. Such a design helps to meet the adjustment requirements under different working conditions. In other embodiments, the number of anti-rotation rods 42 with adjustment function can be determined according to the use requirements.

[0034] The implementation principle of the anti-rotation mechanical suspension system during bolt tightening in Example 1 of the present application is as follows: the present application forms a stable anti-rotation structure 4 system, which significantly improves the safety and effectiveness of the locking operation.

[0035] Embodiment 2:

[0036] The difference between Example 2 and Example 1 is that a suspension adjustment mechanism is added. Figure 5 The suspension adjustment mechanism includes a strain sensor 6 and an auxiliary suspension device 7. A plurality of strain sensors 6 are arranged at intervals on the upper end of each leaf spring 2 to monitor the stress state of the leaf spring 2 in real time. In this embodiment, four strain sensors 6 are fixed at equal intervals on one leaf spring 2. An auxiliary suspension device 7 is fixed on each suspension frame 1. In this embodiment, the auxiliary suspension device 7 is specifically an air spring 71. The air spring 71 is connected to an air filling pipe 72, and the end of the air filling pipe 72 away from the air spring 71 is connected to an air supply source 73, and the air supply source 73 is a compressor. In this embodiment, four air springs 71 are specifically provided, and four air filling pipes 72 are provided. An exhaust valve 74 is installed on each air spring 71. The air supply source 73 is connected to a control module by telecommunication, and each exhaust valve 74 is specifically a solenoid valve, and the exhaust valve 74 and the pressure edge sensor are also connected to the control module by telecommunication, and corresponding action decisions are made according to the data feedback from the strain sensor 6, and then the pressure value in the air spring 71 is dynamically adjusted to achieve the purpose of load balancing.

[0037] The implementation principle of the anti-transformation mechanical suspension system during bolt tightening in Example 2 of the present application is as follows: the present application successfully overcomes the problem of uneven load distribution with the help of advanced sensing technology and intelligent control means, so that the whole vehicle has higher operating efficiency and longer service life.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mechanical suspension system that prevents deformation during bolt tightening, characterized in that: It comprises a plurality of suspension frames (1) arranged at intervals, wherein a spring device is connected between two adjacent suspension frames (1); Each of the spring devices is provided with a connecting frame (3), and each of the connecting frames (3) is provided with an anti-rotation structure (4); the anti-rotation structure (4) comprises a torsion base (41) and an anti-rotation pull rod (42) hinged to one end of the torsion base (41); the torsion base (41) is provided on the connecting frame (3), and one end of the anti-rotation pull rod (42) away from the connecting frame (3) is rotatably connected to the bottom of the adjacent suspension frame (1); The connecting frame (3) comprises a semi-ring beam (31), a locking buckle plate (32) and a pressing tube (33), wherein the locking buckle plate (32) is located at one end of the spring device and the pressing tube (33) is located at the other end of the spring device; The torsion base (41) is located between the pressure tube (33) and the spring device. Semi-ring beams (31) are provided on both sides of the spring device. The two semi-ring beams (31) are sleeved outside the pressure tube (33). The ends of the semi-ring beams (31) pass through the torsion base (41) and the locking buckle plate (32) and are connected to locking members (5). The locking members (5) are used to lock the semi-ring beams (31).

2. A mechanical suspension system for preventing deformation during bolt tightening according to claim 1, characterized in that: The torsion base (41) comprises a hinged support (411) at one end, and the anti-rotation pull rod (42) comprises a pull rod body (421) and pull rod bushings (422) arranged at both ends of the pull rod body (421); One of the pull rod bushings (422) is clamped into the hinged support (411), and the other pull rod bushing (422) is clamped to the bottom of the suspension frame (1); first pads (43) are provided on both sides of the hinged support (411), and second pads (44) are provided on both sides of the suspension frame (1); Each of the tie rod bushings (422) is provided with a locking bolt (45), and one of the locking bolts (45) sequentially passes through the two first pads (43) and the corresponding tie rod bushing (422) and is then threadedly connected to a locking nut (46); Another locking bolt (45) is also threadedly connected to a locking nut (46) after passing through the two second pads (44) and the corresponding tie rod bushing (422).

3. A mechanical suspension system for preventing deformation during bolt tightening according to claim 2, characterized in that: The locking bolt (45) comprises a bolt head (451) and a screw rod section (452); an anti-rotation boss (453) is provided between the bolt head (451) and the screw rod section (452); and a rotation-stopping hole (47) for the anti-rotation boss (453) to be engaged is provided on the first pad (43) and the second pad (44).

4. A mechanical suspension system for preventing deformation during bolt tightening according to claim 3, characterized in that: Both ends of the pull rod body (421) are provided with adjusting screws (4211), and one end of each pull rod bushing (422) close to the pull rod body (421) is provided with a threaded sleeve (4221), and the adjusting screw (4211) is threadedly connected in an adjacent threaded sleeve (4221).

5. The mechanical suspension system for preventing deformation during bolt tightening according to claim 1, characterized in that: An elastic cushion block (34) is fixed inside the semi-ring beam (31), and the elastic cushion block (34) abuts against the pressure tube (33).

6. The mechanical suspension system for preventing deformation during bolt tightening according to claim 1, characterized in that: The spring device comprises a leaf spring (2).

7. A mechanical suspension system for preventing deformation during bolt tightening according to claim 6, characterized in that: It also includes a suspension adjustment mechanism, the suspension adjustment mechanism includes a strain sensor (6) and an auxiliary suspension device (7), a plurality of the strain sensors (6) are arranged at intervals on the leaf spring (2), each of the suspension frames (1) is provided with an auxiliary suspension device (7), the auxiliary suspension device (7) is connected to a control module via telecommunication, the control module is used to control the start and stop of the auxiliary suspension device (7), and each of the strain sensors (6) is connected to the control module via telecommunication.

8. A mechanical suspension system for preventing deformation during bolt tightening according to claim 7, characterized in that: The auxiliary suspension device (7) comprises an air spring (71), each of the air springs (71) is connected to an air filling pipe (72), and the air filling pipe (72) is connected to an air supply source (73); each of the air springs (71) is provided with an exhaust valve (74), and the exhaust valve (74) and the air supply source (73) are both electrically connected to the control module.

9. The mechanical suspension system for preventing deformation during bolt tightening according to claim 3, characterized in that: The anti-rotation boss (453) is configured in a square shape.

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