Semitrailer with buffer damping structure
Through the combined structure of the main shock absorber and the auxiliary shock absorber, and with auxiliary design, the problem of the box semi-trailer swaying on bumpy roads has been solved, achieving stable shock absorption in all scenarios and simplifying maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 河北运驰专用汽车制造有限公司
- Filing Date
- 2025-10-17
- Publication Date
- 2026-07-21
AI Technical Summary
Existing box semi-trailers experience excessive shaking of the cargo box when traversing bumpy roads, leading to damage to the goods.
It adopts a combination structure of multiple main shock absorbers and secondary shock absorbers. The main shock absorbers initially absorb minor vibrations, while the secondary shock absorbers further weaken severe impacts on the basis of the buffering effect of the main shock absorbers. External contaminants are isolated by a flexible shielding cloth, sponge pads lubricate to reduce maintenance frequency, buffer pads reduce noise and direct contact, support rods assist in installation, and storage boxes concentrate tools.
It achieves stable vibration reduction in all scenarios under different road conditions, maintains the stability of the vibration reduction function and a clean environment, simplifies the maintenance process, and improves the ease of installation.
Smart Images
Figure CN224528537U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of semi-trailer equipment technology, specifically a semi-trailer with a buffer and shock absorption structure. Background Technology
[0002] The body of a box-type semi-trailer is mostly made of steel structure or composite plate. It is connected to the tractor vehicle by a towing pin. Some are also equipped with side doors, tailgates and other loading and unloading auxiliary components. It combines transportation safety and loading and unloading convenience and is the core tool for "long-distance, multi-category cargo transportation" in road freight.
[0003] Box-type semi-trailers are mainly used in highway freight scenarios. With their enclosed box body providing rainproof, dustproof, and anti-theft features, they can safely transport a variety of goods such as daily necessities, fresh food, home appliances, furniture, and express parcels. They can be used for bulk cargo transfer on long-distance trunk lines as well as for short-distance distribution in urban and rural areas.
[0004] When transporting goods, existing box semi-trailers can cause excessive shaking when passing through bumpy roads, which can damage the cargo inside. Therefore, a semi-trailer with a buffer and shock absorption structure is proposed to address the above problem. Utility Model Content
[0005] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.
[0006] The technical solution adopted by this utility model to solve its technical problem is as follows: A semi-trailer with a buffer and shock absorption structure, comprising a chassis; multiple sets of wheels are fixedly connected to the side walls of the chassis; multiple sets of main shock absorbers are fixedly connected to the top of the chassis; the main shock absorbers are arranged around the top of the chassis; a top plate is fixedly connected to the top of the main shock absorbers; multiple sets of secondary shock absorbers are fixedly connected to the top of the chassis; the secondary shock absorbers are arranged on one side of the main shock absorbers; a fixed seat is fixedly connected to the top of the secondary shock absorbers; a box is provided on the top of the chassis; a sealed door is opened on the side of the box; by using multiple sets of main shock absorbers for shock absorption, slight vibrations from conventional road surfaces can be absorbed first, reducing the transmission of vibrations to the box. When the vibration amplitude increases, the vibration amplitude of the box will increase, causing the top plate to contact the fixed seat. The secondary shock absorbers further weaken the buffering, further reducing severe impacts on the basis of the buffering of the main shock absorbers. The cooperation of the main shock absorbers and secondary shock absorbers can cover vibrations from slight to severe in all scenarios, reducing the limitations of a single shock absorber element and ensuring stable shock absorption under different road conditions.
[0007] Preferably, a pair of flexible shielding cloths are provided at the top of the chassis; a pair of magnetic blocks are fixed to the bottom and top of the flexible shielding cloths; the flexible shielding cloths are used to wrap the main shock absorber rods; by wrapping the main shock absorber rods and auxiliary shock absorber rods with flexible shielding cloths to isolate them from external pollutants, the direct contact of dust or mud with the main shock absorber rods and auxiliary shock absorber rods can be reduced, ensuring that the main shock absorber rods and auxiliary shock absorber rods always work in a clean environment and maintain stable shock absorption function.
[0008] Preferably, a pair of fixing rings are fixed to the side wall of the main shock absorber; a sponge pad is fixed to the top of the fixing ring; after injecting lubricating liquid into the surface of the sponge pad, the top plate will touch the sponge pad and squeeze it, squeezing out the lubricating oil absorbed by the sponge pad. The lubricating oil can flow to the friction part of the main shock absorber, reducing the need for irregular maintenance of the main shock absorber and the auxiliary shock absorber, thus avoiding cumbersome maintenance.
[0009] Preferably, a lower buffer pad is fixedly connected to the top of the fixed seat; the lower buffer pad is correspondingly arranged with the fixed seat; a pair of upper buffer pads are fixedly connected to the bottom of the top plate; the upper buffer pads are arranged above the lower buffer pads; by the lower buffer pads and upper buffer pads being spaced between the top plate and the fixed seat, the direct contact between the top plate and the fixed seat can be reduced, and the direct rigid contact between the top plate and the fixed seat when the main shock absorber rod retracts can be reduced, thus reducing noise. The retraction of the lower buffer pads and upper buffer pads can also further reduce vibration.
[0010] Preferably, a pair of support rods are fixed to the top of the chassis; the support rods are located at the center of the chassis; the pair of support rods can serve as an installation reference when the box is installed on the top of the chassis, so that the center position of the box can be quickly determined by simply aligning the bottom of the box with the support rods during installation, thus increasing the convenience of installation.
[0011] Preferably, a pair of storage boxes are slidably connected to the side wall of the chassis; a handle is fixed to the top of the storage box; the tools required for maintenance can be stored in the storage box and moved with the semi-trailer to ensure that the tools are available at any time during maintenance, reducing maintenance delays caused by tool shortages when the chassis fails as a whole.
[0012] The advantages of this utility model are:
[0013] 1. The semi-trailer with a buffer and shock absorption structure described in this utility model uses multiple sets of main shock absorbers for shock absorption. It can first absorb slight vibrations from normal road surfaces and reduce the transmission of vibrations to the box body. When the vibration amplitude increases, the vibration amplitude of the box body will increase, causing the top plate to contact the fixed seat. The secondary shock absorber further weakens the buffering. Based on the buffering of the main shock absorbers, it further weakens the severe impact. The cooperation of the main shock absorbers and secondary shock absorbers can cover vibrations from slight to severe in all scenarios, reduce the limitations of a single shock absorber element, and ensure stable shock absorption under different road conditions.
[0014] 2. The semi-trailer with a buffer and shock absorption structure described in this utility model isolates the main shock absorber and auxiliary shock absorber from external pollutants by wrapping them with a flexible shielding cloth. This reduces the direct contact of dust or mud with the main shock absorber and auxiliary shock absorber components, ensuring that the main shock absorber and auxiliary shock absorber always work in a clean environment and maintain stable shock absorption function. Attached Figure Description
[0015] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 This is a schematic diagram of the main body of this utility model;
[0017] Figure 2 This is a schematic diagram of the support rod in this utility model;
[0018] Figure 3 This is a schematic diagram of the flexible shielding cloth in this utility model;
[0019] Figure 4 This is a schematic diagram of the structure of the lower buffer pad in this utility model;
[0020] Figure 5 This is a schematic diagram of the structure of the fixing ring in this utility model.
[0021] In the diagram: 1. Chassis; 11. Wheel; 12. Main shock absorber; 13. Top plate; 14. Secondary shock absorber; 15. Mounting seat; 16. Housing; 17. Sealing door; 2. Flexible shielding cloth; 21. Magnetic block; 3. Fixing ring; 31. Sponge pad; 4. Lower buffer pad; 41. Upper buffer pad; 5. Support rod; 6. Storage box; 61. Handle. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.
[0023] Specific implementation examples are given below.
[0024] like Figures 1 to 5As shown in the embodiment of this utility model, a semi-trailer with a buffer and shock absorption structure includes a chassis 1; multiple sets of wheels 11 are fixedly connected to the side walls of the chassis 1; multiple sets of main shock absorbers 12 are fixedly connected to the top of the chassis 1; the main shock absorbers 12 are arranged around the top of the chassis 1; a top plate 13 is fixedly connected to the top of the main shock absorbers 12; multiple sets of secondary shock absorbers 14 are fixedly connected to the top of the chassis 1; the secondary shock absorbers 14 are arranged on one side of the main shock absorbers 12; a fixing seat 15 is fixedly connected to the top of the secondary shock absorbers 14; a box 16 is provided at the top of the chassis 1; a sealing door 17 is opened on the side of the box 16; during operation, the box 16 is placed on the top of the top plate 13, and then the box 16 is fixed using components such as box locking buckles. After the box 16 is fixed, the sealing door 17 can be opened to load goods into the box 16. When the cargo transported by the chassis 16 is subjected to vibrations caused by uneven ground, the multiple sets of main shock absorbers 12 at the top of the chassis 1 can absorb the vibrations. When the vibration amplitude is large, the top plate 13 can contact a pair of fixed seats 15 on both sides of the main shock absorber 12. Subsequently, a pair of auxiliary shock absorbers 14 can further buffer the vibrations on the basis of the buffering force of the main shock absorbers 12. By using multiple sets of main shock absorbers 12 as shock absorbers, the slight vibrations of the normal road surface can be absorbed first, reducing the transmission of vibrations to the chassis 16. When the vibration amplitude increases, the vibration amplitude of the chassis 16 will increase, causing the top plate 13 to contact the fixed seats 15. The auxiliary shock absorbers 14 further weaken the buffering, further reducing the severe impact on the basis of the buffering of the main shock absorbers 12. The cooperation of the main shock absorbers 12 and the auxiliary shock absorbers 14 can cover vibrations from slight to severe in all scenarios, reducing the limitations of a single shock absorber element and ensuring stable shock absorption under different road conditions.
[0025] like Figures 2 to 3 As shown, a pair of flexible shielding cloths 2 are provided at the top of the chassis 1; a pair of magnetic blocks 21 are fixed to the bottom and top of the flexible shielding cloths 2; the flexible shielding cloths 2 are used to wrap the main shock absorber 12; during operation, when the main shock absorber 12 and multiple sets of auxiliary shock absorber 14 are used, the flexible shielding cloths 2 can be placed on the outside, and then the magnetic blocks 21 around the flexible shielding cloths 2 are magnetically attracted to the top of the chassis 1 and the bottom of the housing 16, which can wrap the main shock absorber 12 and auxiliary shock absorber 14 as a whole, blocking pollutants and corrosive liquids; by wrapping the main shock absorber 12 and auxiliary shock absorber 14 with the flexible shielding cloths 2 to isolate them from external pollutants, the direct contact of dust or mud with the main shock absorber 12 and auxiliary shock absorber 14 components can be reduced, ensuring that the main shock absorber 12 and auxiliary shock absorber 14 always work in a clean environment and maintain stable shock absorption function.
[0026] like Figures 4 to 5As shown, a pair of fixing rings 3 are fixed to the side wall of the main shock absorber 12; a sponge pad 31 is fixed to the top of the fixing ring 3; during operation, lubricating liquid can be injected into the surface of the sponge pad 31. When the main shock absorber 12 contracts elastically, the top plate 13 will touch the surface of the sponge pad 31, squeezing out the lubricating oil absorbed by the sponge pad 31 to lubricate the main shock absorber 12; after injecting lubricating liquid into the surface of the sponge pad 31, the top plate 13 will touch the sponge pad 31 and squeeze it, squeezing out the lubricating oil absorbed by the sponge pad 31. The lubricating oil can flow to the friction part of the main shock absorber 12, reducing the need for irregular maintenance of the main shock absorber 12 and the auxiliary shock absorber 14, thus avoiding cumbersome maintenance.
[0027] like Figure 4 As shown, a lower buffer pad 4 is fixedly connected to the top of the fixed seat 15; the lower buffer pad 4 is correspondingly arranged with the fixed seat 15; a pair of upper buffer pads 41 are fixedly connected to the bottom of the top plate 13; the upper buffer pads 41 are positioned above the lower buffer pads 4; during operation, when the top plate 13 contacts the fixed seat 15, the lower buffer pad 4 and the upper buffer pad 41 can be spaced between the top plate 13 and the fixed seat 15. Due to the overall vibration of the housing 16, the lower buffer pad 4 and the upper buffer pad 41 can be squeezed and deformed; by the lower buffer pad 4 and the upper buffer pad 41 being spaced between the top plate 13 and the fixed seat 15, the direct contact between the top plate 13 and the fixed seat 15 can be reduced, and the direct rigid contact between the top plate 13 and the fixed seat 15 when the main shock absorber rod 12 retracts can be reduced, thus reducing noise. The retraction of the lower buffer pad 4 and the upper buffer pad 41 can also further reduce vibration.
[0028] like Figure 2 As shown, a pair of support rods 5 are fixed to the top of the chassis 1; the support rods 5 are located at the center of the chassis 1; during operation, when the box 16 is installed on the chassis 1, the pair of support rods 5 can be aligned with the bottom of the box 16, so that the box 16 is accurately positioned during installation; the pair of support rods 5 can serve as an installation reference when the box 16 is installed on the top of the chassis 1, so that the center position of the box 16 can be quickly determined by simply aligning the bottom of the box 16 with the support rods 5, thus increasing the convenience of installation.
[0029] like Figure 2 As shown, a pair of storage boxes 6 are slidably connected to the side wall of the chassis 1; a handle 61 is fixed to the top of the storage box 6; during operation, tools for routine maintenance of components such as the main shock absorber 12 can be placed inside the storage box 6. When the main shock absorber 12 or other components need maintenance, the handle 61 can be pulled to remove the components stored inside the storage box 6; the storage box 6 can centrally store the tools required for maintenance and move with the semi-trailer, ensuring that the tools are readily available during maintenance and reducing maintenance delays caused by tool shortages when the chassis 1 malfunctions.
[0030] Working principle: The container 16 is placed on top of the top plate 13, and then the container 16 is fixed using components such as the container locking buckle. After the container 16 is fixed, the sealing door 17 can be opened to load goods into the container 16. When the goods transported by the container 16 are subjected to vibrations caused by uneven ground, the multiple sets of main shock absorbers 12 at the top of the chassis 1 can absorb the vibrations. When the vibration amplitude is large, the top plate 13 can contact a pair of fixed seats 15 on both sides of the main shock absorbers 12. Then, a pair of auxiliary shock absorbers 14 can further buffer the vibrations on the basis of the buffering force of the main shock absorbers 12. When the main shock absorbers 12 and the multiple sets of auxiliary shock absorbers 14 are in use, the flexible shielding cloth 2 can be covered on the outside. Then, the magnetic blocks 21 around the flexible shielding cloth 2 are magnetically attracted to the top of the chassis 1 and the bottom of the container 16, which can cover the main shock absorbers 12 and auxiliary shock absorbers 14 as a whole. The system wraps around the main shock absorber 12 to block contaminants and corrosive liquids. Lubricating liquid can be injected onto the surface of the sponge pad 31. When the main shock absorber 12 contracts elastically, the top plate 13 will touch the surface of the sponge pad 31, squeezing out the lubricating oil absorbed by the sponge pad 31 to lubricate the main shock absorber 12. When the top plate 13 contacts the fixed seat 15, the lower buffer pad 4 and the upper buffer pad 41 can be spaced between the top plate 13 and the fixed seat 15. Due to the overall vibration of the housing 16, the lower buffer pad 4 and the upper buffer pad 41 can be squeezed and deformed. When the housing 16 is installed above the chassis 1, a pair of support rods 5 can be aligned with the bottom of the housing 16 to ensure accurate positioning of the housing 16 during installation. Tools that require daily maintenance of the main shock absorber 12 and other components can be placed inside the storage box 6. When the main shock absorber 12 and other components require maintenance, the handle 61 can be pulled to remove the components stored inside the storage box 6.
[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.
Claims
1. A semi-trailer with a shock-absorbing structure, characterized in that: Includes a chassis (1); multiple sets of wheels (11) are fixed to the side walls of the chassis (1); multiple sets of main shock absorbers (12) are fixed to the top of the chassis (1); the main shock absorbers (12) are arranged around the top of the chassis (1); a top plate (13) is fixed to the top of the main shock absorbers (12); multiple sets of secondary shock absorbers (14) are fixed to the top of the chassis (1); the secondary shock absorbers (14) are arranged on one side of the main shock absorbers (12); a fixed seat (15) is fixed to the top of the secondary shock absorbers (14); a box (16) is provided on the top of the chassis (1); a sealed door (17) is opened on the side of the box (16).
2. A semi-trailer with a buffer and shock absorption structure according to claim 1, characterized in that: The chassis (1) has a pair of flexible shielding cloths (2) at the top; a pair of magnetic blocks (21) are fixed to the bottom and top of the flexible shielding cloths (2); the flexible shielding cloths (2) wrap around the main shock absorber rod (12).
3. A semi-trailer with a buffer and shock absorption structure according to claim 2, characterized in that: A pair of fixing rings (3) are fixed to the side wall of the main shock absorber (12); a sponge pad (31) is fixed to the top of the fixing ring (3).
4. A semi-trailer with a buffer and shock absorption structure according to claim 3, characterized in that: The top of the fixed seat (15) is fixed with a lower buffer pad (4); the lower buffer pad (4) is correspondingly arranged with the fixed seat (15); a pair of upper buffer pads (41) are fixed to the bottom of the top plate (13); the upper buffer pads (41) are arranged above the lower buffer pads (4).
5. A semi-trailer with a buffer and shock absorption structure according to claim 4, characterized in that: A pair of support rods (5) are fixed to the top of the chassis (1); the support rods (5) are located at the center of the chassis (1).
6. A semi-trailer with a buffer and shock absorption structure according to claim 5, characterized in that: A pair of storage boxes (6) are slidably connected to the side wall of the chassis (1); a handle (61) is fixed to the top of the storage box (6).