Air suspension device for trailer

Abstract

The utility model discloses an air suspension device for a trailer, which belongs to the technical field of air suspension of trailers and is characterized in that a damping suspension comprises a tail connecting plate, one end of the tail connecting plate is fixedly connected with an upper hinge plate, and the top of the tail connecting plate and the top of the upper hinge plate are rotatably mounted at the bottom of a vehicle in a limited manner; a lower hinge plate is hinged to the end of the upper hinge plate, a lower supporting plate is connected to the tail of the lower hinge plate, and a damping air bag is arranged between the lower supporting plate and the tail connecting plate. The hub mounting mechanism comprises an adaptive mounting assembly, the adaptive mounting assembly is rotationally mounted between the lower supporting plate and the lower hinge plate in a left-right limiting mode, a brake assembly is arranged at the bottom of the adaptive mounting assembly, the adaptive mounting assembly can make a hub and a tire incline, the tire can be better attached to the ground conveniently, and the stress area is increased; the damping suspension is good in damping effect and can bear large loads, and the requirement for heavy-load transportation is met.

Description

Technical Field

[0001] This utility model relates to the field of trailer air suspension, and more specifically, to an air suspension device for trailers. Background Technology

[0002] In modern logistics and transportation, trailers are important transportation tools, and the performance of their suspension systems has a crucial impact on vehicle stability, safety, and the quality of cargo transportation.

[0003] Traditional trailer suspension systems have limitations in load capacity and shock absorption, making it difficult to meet the growing demands of heavy-duty transport and the transport of special goods such as precision instruments. Meanwhile, with increasingly complex traffic environments, higher demands are placed on the turning flexibility of trailers. Traditional trailer suspension systems have excessively large turning radii, leading to reduced maneuverability and limited passability, which can easily cause traffic congestion. How to invent an air suspension system for trailers to improve these problems has become a pressing issue for those skilled in the art. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an air suspension device for trailers, which aims to improve the limitations of traditional trailer suspension devices in terms of load capacity and shock absorption. In addition, traditional trailer suspension devices have a large turning radius and poor maneuverability, which restricts passability and easily causes traffic congestion.

[0005] This utility model is implemented as follows: an air suspension device for trailers, comprising...

[0006] The suspension body includes a shock-absorbing suspension, which includes a rear connecting plate. One end of the rear connecting plate is fixedly connected to an upper hinge plate. The top of the rear connecting plate and the upper hinge plate are rotatably mounted on the bottom of the vehicle. The end of the upper hinge plate is hinged to a lower hinge plate. The rear of the lower hinge plate is connected to a lower support plate. A shock-absorbing airbag is provided between the lower support plate and the rear connecting plate.

[0007] A wheel hub mounting mechanism includes an adaptive mounting component, which is rotatably mounted between the lower support plate and the lower hinge plate with left and right limits. A brake component is provided at the bottom of the adaptive mounting component.

[0008] In a preferred embodiment of this utility model, a rotating shaft is rotatably connected to the middle of the rear connecting plate and the upper hinge plate, and a top connecting plate is rotatably mounted to the middle of the rotating shaft. The top connecting plate is fixedly mounted to the bottom of the vehicle by bolts.

[0009] In a preferred technical solution of the present utility model, connecting shafts are respectively penetrated through the end parts of the upper hinge plate and the lower hinge plate, and the lower hinge plate and the upper hinge plate are hinged through the connecting shafts.

[0010] In a preferred technical solution of the present utility model, the top of the shock-absorbing airbag is fixedly connected to the bottom surface of one end of the tail connecting plate far away from the upper hinge plate, and the bottom of the shock-absorbing airbag is fixedly connected to the upper surface of one end of the lower support plate far away from the lower hinge plate.

[0011] In a preferred technical solution of the present utility model, a transmission plate is fixedly connected to one side of the top of the upper hinge plate, and the outer end of the transmission plate is in transmission connection with the semi-trailer hydrostatic synchronous steering system.

[0012] In a preferred technical solution of the present utility model, an auxiliary shock-absorbing installation component is arranged in the middle of the shock-absorbing suspension. The auxiliary shock-absorbing installation component includes a hydraulic shock absorber. The top of the hydraulic shock absorber is hinged with an upper hinge block, and the upper hinge block is fixedly installed at the inner bottom of the upper hinge plate. The bottom of the hydraulic shock absorber is hinged with a lower hinge block, and both sides of the lower hinge block are respectively fixedly connected to both inner walls of the lower hinge plate.

[0013] In a preferred technical solution of the present utility model, the auxiliary shock-absorbing installation component further includes a fixing plate. Both sides of the fixing plate are respectively fixedly connected to both inner walls of the lower support plate. Above one end of the fixing plate close to the upper hinge plate, a vertical plate is fixedly connected. The top of the vertical plate is fixedly connected with a cover plate, and below one end of the cover plate far away from the vertical plate, an auxiliary support plate is fixedly connected.

[0014] In a preferred technical solution of the present utility model, the vertical plate, the cover plate and the auxiliary support plate enclose a reversed C-shaped shape rotated 90 degrees clockwise.

[0015] In a preferred technical solution of the present utility model, the adaptation installation component further includes a fixing block. Wheels are respectively installed on both sides of the fixing block in a limited rotation manner, and the middle part of the fixing block is installed between the vertical plate and the auxiliary support plate in a limited rotation manner.

[0016] In a preferred technical solution of the present utility model, a support rotating rod is penetrated through the middle part of the fixing block, and both ends of the support rotating rod are respectively in limited rotation connection with the vertical plate and the auxiliary support plate.

[0017] The beneficial effects of the present utility model are as follows: The air suspension device for a trailer obtained by the above design of the present utility model can withstand larger loads and meet the requirements of heavy-duty transportation through the stable connection of various components in the suspension main body and the strengthened design of the wheel hub installation mechanism during use.

[0018] Not only are there shock-absorbing airbags to effectively buffer the impact of road bumps, but the hydraulic shock absorbers in the auxiliary shock-absorbing mounting components can further absorb vibration energy. This dual shock absorption ensures the stability of the vehicle during driving and greatly improves the shock absorption effect.

[0019] Excellent shock absorption performance can significantly reduce the impact of vibration on goods during transportation and reduce the risk of damage to precision instruments due to vibration, making this air suspension device suitable for the transportation of vibration-sensitive goods such as precision instruments.

[0020] The transmission plate, which is fixedly connected to the top side of the upper articulated plate, is connected to the semi-trailer's hydro-hydraulic synchronous steering system, enabling precise steering control, reducing the turning radius, and improving the trailer's steering flexibility in complex road conditions. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of one side of the structure provided by an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of another side of the structure provided for an embodiment of the present invention;

[0024] Figure 3 A schematic diagram of the disassembled shock-absorbing suspension structure provided for an embodiment of this utility model;

[0025] Figure 4 A schematic diagram of the auxiliary shock absorption mounting component provided for an embodiment of this utility model;

[0026] Figure 5 A schematic diagram of the adaptable installation component structure provided for an embodiment of this utility model.

[0027] In the diagram: 100 - Suspension main body; 110 - Shock absorber suspension; 111 - Rear connecting plate; 112 - Upper hinge plate; 113 - Top connecting plate; 114 - Rotating shaft; 115 - Lower hinge plate; 116 - Lower support plate; 117 - Shock absorber airbag; 118 - Connecting shaft; 119 - Transmission plate; 120 - Auxiliary shock absorber mounting assembly; 121 - Fixing plate; 122 - Vertical plate; 123 - Cover plate; 124 - Auxiliary support plate; 125 - Hydraulic shock absorber; 126 - Upper hinge block; 127 - Lower hinge block; 200 - Wheel hub mounting mechanism; 210 - Adaptive mounting assembly; 211 - Wheel hub; 212 - Fixing block; 213 - Support strut; 220 - Brake assembly. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0029] Please see Figure 1 and Figure 2 This utility model provides a technical solution: an air suspension device for trailers, comprising...

[0030] The suspension body 100 includes a shock-absorbing suspension 110, which includes a rear connecting plate 111. One end of the rear connecting plate 111 is fixedly connected to an upper hinge plate 112. The top of the rear connecting plate 111 and the upper hinge plate 112 are rotatably mounted on the bottom of the vehicle. A lower hinge plate 115 is hinged to the end of the upper hinge plate 112. A lower support plate 116 is connected to the rear of the lower hinge plate 115. A shock-absorbing airbag is disposed between the lower support plate 116 and the rear connecting plate 111. 117; Wheel hub mounting mechanism 200, the wheel hub mounting mechanism 200 includes an adaptive mounting component 210, the adaptive mounting component 210 is rotatably mounted between the lower support plate 116 and the lower hinge plate 115 with left and right limit, and a brake component 220 is provided at the bottom of the adaptive mounting component 210. The adaptive mounting component 210 can tilt the wheel hub 211 and the tire, so that the tire can better contact the ground and increase the force-bearing area. The shock-absorbing suspension 110 has a good shock absorption effect and can withstand a large load, meeting the needs of heavy-duty transportation.

[0031] Brake assembly 220 is a braking system in the prior art.

[0032] Please see Figure 3 and Figure 4A rotating shaft 114 is rotatably connected to the middle of the rear connecting plate 111 and the upper hinge plate 112. A top connecting plate 113 is rotatably mounted to the middle of the rotating shaft 114. The top connecting plate 113 is fixed to the bottom of the vehicle by bolts. The rotating shaft 114 facilitates steering of the rear connecting plate 111 and the upper hinge plate 112. A connecting shaft 118 is respectively provided through the ends of the upper hinge plate 112 and the lower hinge plate 115, and the lower hinge plate 115 and the upper hinge plate 112 are hinged through the connecting shaft 118.

[0033] The top of the shock-absorbing airbag 117 is fixedly connected to the bottom surface of the end of the tail connecting plate 111 away from the upper hinge plate 112. The bottom of the shock-absorbing airbag 117 is fixedly connected to the upper surface of the end of the lower support plate 116 away from the lower hinge plate 115. The outside of the shock-absorbing airbag 117 is also connected to a height control valve, an air compressor, an air tank, an air pipeline system, etc., for use in conjunction with the shock-absorbing airbag 117 to improve the shock absorption effect.

[0034] Please see Figure 4 and Figure 5 A transmission plate 119 is fixedly connected to one side of the top of the upper hinge plate 112. The outer end of the transmission plate 119 is connected to the semi-trailer's hydro-hydraulic synchronous steering system. The hydro-hydraulic synchronous steering system is a conventional technology and consists of a hydraulic pump, oil pipes, pressure fluid control valves, V-belts, and an oil tank. Its working principle is to convert a portion of the engine power output into hydraulic pump pressure, which is used to independently adjust the steering angle of each wheel of the trailer through a hydraulic device. The adjustment angle is based on a pre-set program to ensure that the wheels conform to the Ackermann steering angle theory, so that the wheels of the semi-trailer are in a pure rolling state when turning, avoiding the "tire twisting" phenomenon, reducing tire wear, and making the vehicle's posture more stable. An auxiliary shock absorber mounting assembly 120 is provided in the middle of the shock absorber suspension 110. The auxiliary shock absorber mounting assembly 120 includes a hydraulic shock absorber 125. An upper hinge block 126 is hinged to the top of the hydraulic shock absorber 125 and is fixedly installed on the inner bottom of the upper hinge plate 112. A lower hinge block 127 is hinged to the bottom of the hydraulic shock absorber 125 and is fixedly connected to the inner walls of both sides of the lower hinge plate 115 on both sides. The hydraulic shock absorber 125 is used to increase the shock absorption effect.

[0035] The auxiliary vibration damping mounting assembly 120 also includes a fixing plate 121. The fixing plate 121 is fixedly connected to the inner walls of the lower support plate 116 on both sides. A vertical plate 122 is fixedly connected to the upper end of the fixing plate 121 near the upper hinge plate 112. A cover plate 123 is fixedly connected to the top of the vertical plate 122. An auxiliary support plate 124 is fixedly connected to the lower end of the cover plate 123 away from the vertical plate 122. The vertical plate 122, cover plate 123, and auxiliary support plate 124 form a U-shape rotated 90 degrees clockwise. This U-shape is used for better installation of the mounting assembly 210.

[0036] The mounting assembly 210 also includes a fixing block 212. Wheel hubs 211 are rotatably connected to both sides of the fixing block 212, and the middle of the fixing block 212 is rotatably mounted between the upright plate 122 and the auxiliary support plate 124. A support rod 213 is threaded through the middle of the fixing block 212. Both ends of the support rod 213 are rotatably connected to the upright plate 122 and the auxiliary support plate 124, respectively. When encountering a road surface that is higher on one side than the other, the fixing block 212 will tilt in coordination with the support rod 213, causing the wheel hub 211 and tire to tilt, facilitating better tire contact with the ground and increasing the tire's contact area.

[0037] Working principle: When the trailer is moving, road bumps are transmitted to the mounting components 210 through the wheel hubs 211. At this time, the shock absorber airbags 117 and hydraulic shock absorbers 125 begin to function. The shock absorber airbags 117 absorb some of the vibration energy through their own elastic deformation; the hydraulic shock absorbers 125 further dissipate the vibration energy by utilizing the flow damping of hydraulic oil, thereby reducing the vibration transmitted to the vehicle body.

[0038] During steering, the semi-trailer's hydrodynamic synchronous steering system drives the upper hinge plate 112 to rotate around the connecting shaft 118 via the transmission plate 119, which in turn drives the lower hinge plate 115 to rotate, causing the entire suspension body 100 to produce a corresponding steering action. At the same time, the adaptive mounting component 210 is limited to rotate between the upright plate 122 and the auxiliary support plate 124 by the support rotating rod 213. When encountering a road surface that is higher on one side and lower on the other, the fixing block 212 will tilt in coordination with the support rotating rod 213, causing the wheel hub 211 and the tire to tilt, making it easier for the tire to better contact the ground and increasing the tire's force-bearing area.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An air suspension device for a trailer, characterized by, Comprising The suspension body comprises a damping suspension, the damping suspension comprises a tail connecting plate, one end of the tail connecting plate is fixedly connected with an upper hinged plate, the top of the tail connecting plate and the upper hinged plate is limitingly rotatably installed on the bottom of the vehicle, the end of the upper hinged plate is hingedly connected with a lower hinged plate, the tail of the lower hinged plate is connected with a lower supporting plate, a damping air bag is arranged between the lower supporting plate and the tail connecting plate; The hub mounting mechanism comprises an adaptive mounting assembly, the adaptive mounting assembly is limitingly rotatably installed between the lower supporting plate and the lower hinged plate, and the bottom of the adaptive mounting assembly is provided with a brake assembly.

2. An air suspension assembly for a trailer as defined in claim 1, characterized in that: The middle part of the tail connecting plate and the upper hinged plate is limitingly rotatably connected with a rotating shaft, the middle part of the rotating shaft is limitingly rotatably installed with a top connecting plate, and the top connecting plate is fixedly installed on the bottom of the vehicle through bolts.

3. An air suspension assembly for a trailer as set forth in claim 1, characterized in that: The ends of the upper hinged plate and the lower hinged plate are respectively provided with a connecting shaft, and the lower hinged plate and the upper hinged plate are hingedly connected through the connecting shaft.

4. An air suspension assembly for a trailer as defined in claim 3, characterized in that: The top of the damping air bag is fixedly connected with the bottom surface of one end of the tail connecting plate away from the upper hinged plate, and the bottom of the damping air bag is fixedly connected with the upper surface of one end of the lower supporting plate away from the lower hinged plate.

5. An air suspension assembly for a trailer as defined in claim 3, wherein: The top side of the upper hinged plate is fixedly connected with a transmission plate, and the outer end of the transmission plate is drivingly connected with a semi-trailer dynamic liquid synchronous steering system.

6. An air suspension assembly for a trailer as set forth in claim 3, characterized in that: The middle part of the damping suspension is provided with an auxiliary damping mounting assembly, the auxiliary damping mounting assembly comprises a hydraulic shock absorber, the top of the hydraulic shock absorber is hingedly connected with an upper hinged block, the upper hinged block is fixedly installed on the inner bottom of the upper hinged plate, the bottom of the hydraulic shock absorber is hingedly connected with a lower hinged block, and the two sides of the lower hinged block are respectively fixedly connected to the two inner walls of the lower hinged plate.

7. An air suspension assembly for a trailer as defined in claim 6, wherein: The auxiliary damping mounting assembly further comprises a fixed plate, the two sides of the fixed plate are respectively fixedly connected to the inner walls of the lower supporting plate, one end of the fixed plate close to the upper hinged plate is fixedly connected with a vertical plate above, the top of the vertical plate is fixedly connected with a cover plate, and one end of the cover plate away from the vertical plate is fixedly connected with an auxiliary supporting plate below.

8. An air suspension assembly for a trailer as defined in claim 7, wherein: The vertical plate, the cover plate and the auxiliary supporting plate form a character-shaped structure which rotates 90 degrees clockwise.

9. An air suspension assembly for a trailer as defined in claim 8, wherein: The adaptive mounting assembly further comprises a fixed block, the two sides of the fixed block are respectively limitingly rotatably connected with hubs, and the middle part of the fixed block is limitingly rotatably installed between the vertical plate and the auxiliary supporting plate.

10. An air suspension assembly for a trailer as defined in claim 9, wherein: The middle part of the fixed block is provided with a supporting rotating rod, and the two ends of the supporting rotating rod are limitingly rotatably connected with the vertical plate and the auxiliary supporting plate.

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