Safety type air suspension full trailer

Abstract

The utility model relates to the technical field of full trailers, in particular to a safety type air suspension full trailer. An air bag suspension is connected between an axle and a frame; the inertia brake is used for realizing emergency braking of the trailer when the tractor is braked; the output end of an air supply control system associated with the APU is connected with a first air cylinder, a second air cylinder, a third air cylinder and a parking valve, the output end of the parking valve is connected to rear cavities of a front axle brake chamber and a rear axle brake chamber, and the output end of the second air cylinder is sequentially connected with a rear axle relay valve and the front cavity of the rear axle brake chamber. The output end of the third air cylinder is sequentially connected with a front axle relay valve and a front cavity of a front axle brake chamber, and the output end of the first air cylinder is connected to the air inlet end of the air bag suspension. A storage battery, a generator and an air compressor are sequentially arranged on the front portion of the frame, electric energy generated by the generator is stored in the storage battery, the storage battery supplies power to the air compressor, and the air outlet end of the air compressor is connected to the input end of the air supply control system. The tire is a solid tire; the safety and reliability of the full trailer in the transportation process are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of full trailers, in particular to a safe air suspension full trailer. Background Art

[0002] In order to meet the requirements of social development, it is inevitable for the market and economic development to design and develop special equipment for precision cargo transportation on the basis of the original semi-trailers and combined full trailers to meet the needs of the transportation market. At present, when transporting precision goods by land in China, ordinary full trailers are mostly selected. Although the transportation cost is controlled, there are also some disadvantages. For example, common full trailers use pneumatic tires. After the tires leak air, it is easy to cause the vehicle to tilt, resulting in damage to the goods or leakage of dangerous goods.

[0003] In addition, when the tractor and the full trailer are fully loaded, due to the large mass and large inertia generated; and some tractors only use mechanical and hydraulic brakes, while the trailer has no controllable braking system. When driving the tractor or full trailer downhill on a smooth road surface, it may happen that the full trailer pushes the tractor and may produce a folding effect, thus affecting the safe driving of the vehicle.

[0004] Therefore, it is an inevitable demand of the transportation market to design a general, reliable, comfortable and safe full trailer with its own air source and follow-up braking. Content of the Utility Model

[0005] The purpose of the utility model is to provide a safe air suspension full trailer, which is used to solve the problem of poor safety and reliability of the full trailer in the transportation process in the prior art.

[0006] To achieve the above object, the utility model provides the following technical solutions: A safety type air suspension full trailer, including a frame, axles arranged below the front and rear parts of the frame, and tires assembled at both ends of the axles. The bottom of the airbag suspension is connected to the axle, and the top of the airbag suspension is connected to the bottom of the frame; the rear axle brake air chamber is used to achieve the service brake and parking brake of the rear axle; the front axle brake air chamber is used to achieve the service brake and parking brake of the front axle; the inertial brake is used to achieve the emergency brake of the trailer when the tractor brakes; the output ends of the air supply control system associated with the APU are respectively connected to an air storage tank one, an air storage tank two, an air storage tank three, and a parking valve. The output end of the parking valve is respectively connected to the rear cavity of the rear axle brake air chamber and the front axle brake air chamber. The output end of the air storage tank two is connected to a rear axle relay valve. The output end of the rear axle relay valve is connected to the front cavity of the rear axle brake air chamber. The output end of the air storage tank three is connected to a front axle relay valve. The output end of the front axle relay valve is connected to the front cavity of the front axle brake air chamber. The output end of the air storage tank one is connected to the air inlet end of the airbag suspension; a storage battery, a generator, and an air compressor are successively arranged at the front part of the frame. The electric energy generated by the generator is stored in the storage battery, and the storage battery supplies power to the air compressor. The air outlet end of the air compressor is connected to the input end of the air supply control system; the tires are solid tires.

[0007] Preferably, the airbag suspension includes a connecting frame fixed in the middle at a position near the end of the axle, an airbag with the bottom fixed at the rear end of the connecting frame and the top connected to the frame, a connecting seat with the bottom hinged at the front end of the connecting frame and connected to the frame, and a shock absorber with the top hinged at the connecting seat and the bottom hinged to the axle.

[0008] Preferably, the output end of the air storage tank one is connected with two three-way joints. The output ends of the three-way joints are respectively connected with height valves. The output ends of the height valves are connected to the input ends of the corresponding airbags.

[0009] Preferably, leaf springs are arranged at the position above the airbag suspension on the bottom of the frame. The top of the airbag is connected to the rear end of the bottom of the corresponding leaf spring, and the top of the connecting seat is connected to the front end of the bottom of the corresponding leaf spring.

[0010] Preferably, limiting card slots are respectively fixed on both sides of the middle of the top surface of the axle. Rubber pads are arranged at the bottom of the inner cavity of the limiting card slots. Longitudinal beams are fixed at the positions on the bottom surface of the frame corresponding to the inner cavities of the limiting card slots.

[0011] Preferably, a turntable is rotatably installed at the bottom of the front end of the frame. A triangular frame for connecting the tractor is hinged at the front end of the turntable.

[0012] Preferably, an air filter is also arranged at the front part of the frame and assembled at the air inlet end of the air compressor.

[0013] Preferably, the inertia brake includes a follow-up mechanism fixed to the axle, a runner that can roll back and forth in the inner cavity of the follow-up mechanism, a brake cable connected to the runner, and a brake air valve with the top end of a swing handle connected to the rear end of the brake cable. The air inlet end of the brake air valve is connected to the third air storage tank, and the output end of the brake air valve is connected to the relay valve of the rear axle and the relay valve of the front axle.

[0014] Preferably, strip-shaped sliding grooves are respectively arranged longitudinally on both side walls of the follow-up mechanism. The two ends of the central axis of the runner are respectively slidably clamped in the strip-shaped sliding grooves, and limiting rings are respectively sleeved at positions corresponding to the outer side walls of the follow-up mechanism at both ends of the central axis of the runner.

[0015] Preferably, an adjusting bolt is threadedly sleeved in the middle of the front wall of the follow-up mechanism.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] The safety-type air suspension full trailer involved in the present utility model is equipped with an air compressor by itself to form its own inflation system, which can provide the use of airbag air pressure and braking air pressure; it has an inertia brake, which can realize the emergency braking of the full trailer when the tractor brakes emergently, ensuring driving safety; by using the combination of solid tires and airbag suspension, not only the reliable performance of the full trailer is improved, but also the driving smoothness can be guaranteed. Brief Description of the Drawings

[0018] Figure 1 It is a top view structural schematic diagram of the whole of the present utility model;

[0019] Figure 2 It is a side view structural schematic diagram of the whole of the present utility model;

[0020] Figure 3 It is a schematic diagram of the pneumatic control system of the present utility model;

[0021] Figure 4 It is a side view structural schematic diagram of the inertia brake of the present utility model;

[0022] Figure 5 It is a bottom view structural schematic diagram of the follow-up mechanism of the present utility model;

[0023] Figure 6 It is a side view structural schematic diagram of the brake air valve of the present utility model;

[0024] Figure 7 It is a rear view structural schematic diagram of the whole of the present utility model.

[0025] In the figure: 1 - vehicle frame; 1.1 - turntable; 1.2 - tripod; 1.3 - longitudinal beam;

[0026] 2 - Axle; 2.1 - Limit Card Slot; 2.2 - Rubber Pad;

[0027] 3 - Tire;

[0028] 4 - Airbag Suspension; 4.1 - Connecting Frame; 4.2 - Airbag; 4.3 - Connecting Seat; 4.4 - Shock Absorber;

[0029] 5 - Battery;

[0030] 6 - Generator;

[0031] 7 - Air Compressor;

[0032] 8 - Air Filter;

[0033] 9 - APU;

[0034] 10 - Air Storage Tank 1;

[0035] 11 - Three - way Joint;

[0036] 12 - Height Valve;

[0037] 13 - Air Storage Tank 2;

[0038] 14 - Rear Axle Relay Valve;

[0039] 15 - Rear Axle Brake Chamber;

[0040] 16 - Air Storage Tank 3;

[0041] 17 - Front Axle Relay Valve;

[0042] 18 - Front Axle Brake Chamber;

[0043] 19 - Parking Valve;

[0044] 20 - Inertia Brake; 20.1 - Follow - up Mechanism; 20.1.1 - Strip - shaped Slide Groove; 20.2 - Runner; 20.2.1 - Limit Ring; 20.3 - Brake Cable; 20.4 - Brake Air Valve; 20.5 - Adjusting Bolt. Detailed Implementation Manner

[0045] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than 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 efforts shall fall within the protection scope of the present utility model.

[0046] Please refer to Figure 1-7, the present utility model provides a technical solution, a safety type air suspension full trailer, including a vehicle frame 1, axles 2 arranged under the front and rear parts of the vehicle frame 1, and tires 3 assembled at both ends of the axles 2. Among them, the tires 3 are solid rubber tires; a turntable 1.1 is rotatably installed at the bottom of the front end of the vehicle frame 1, and a tripod 1.2 for connecting to a tractor is hinged at the front end of the turntable 1.1, that is, the turntable 1.1 can rotate flexibly relative to the vehicle frame 1 in the horizontal direction to ensure the safety and smoothness when the vehicle turns; the rear end of the tripod 1.2 can swing up and down flexibly relative to the front end of the turntable 1.1, and the front end of the tripod 1.2 is connected to the tractor by hanging.

[0047] Solid tires have strong durability and reliability, but are not convenient for the smooth form of the full trailer. Therefore, the bottom of the airbag suspension 4 is connected to the axle 2, and the top of the airbag suspension 4 is connected to the bottom of the vehicle frame 1; among them, the airbag suspension 4 includes a connecting frame 4.1 fixed in the middle at a position near the end of the axle 2, an airbag 4.2 with the bottom end fixed to the rear end of the connecting frame 4.1 and the top end connected to the vehicle frame 1, a connecting seat 4.3 with the bottom hinged to the front end of the connecting frame 4.1 and connected to the vehicle frame 1, and a shock absorber 4.4 with the top end hinged to the connecting seat 4.3 and the bottom end hinged to the axle 2. In addition, in order to avoid losing the elastic support for the vehicle frame 1 when the airbag 4.2 is damaged, leaf springs are arranged at the position above the airbag suspension 4 at the bottom of the vehicle frame 1. The top of the airbag 4.2 is connected to the rear end of the bottom of the corresponding leaf spring, and the top of the connecting seat 4.3 is connected to the front end of the bottom of the corresponding leaf spring. That is, through the arrangement method of connecting the airbag 4.2 and the leaf spring in series, a double insurance effect is achieved to ensure the reliability of the suspension.

[0048] Limit slots 2.1 are respectively fixed on both sides of the middle of the top surface of the axle 2, and a rubber pad 2.2 is arranged at the bottom of the inner cavity of the limit slot 2.1. A longitudinal beam 1.3 is fixed at the position of the bottom surface of the vehicle frame 1 corresponding to the inner cavity of the limit slot 2.1. It is used to effectively support the vehicle frame 1 when the airbag suspension 4 fails, so as to avoid the phenomenon that the goods slide due to excessive inclination of the vehicle frame 1.

[0049] A storage battery 5, a generator 6 and an air compressor 7 are successively arranged at the front part of the vehicle frame 1. The electric energy generated by the generator 6 is stored in the storage battery 5, and the storage battery 5 supplies power to the air compressor 7. The air outlet end of the air compressor 7 is connected to the input end of the air supply control system; the generator 6 uses a gasoline generator or a diesel generator, and the storage battery 5 uses a rechargeable lithium battery, and the power can also be supplemented by external charging. In addition, the air compressor 7 can also be driven by a diesel engine or a gasoline engine.

[0050] The rear axle brake air chamber 15 is used to realize the service brake and parking brake of the rear axle 2; the front axle brake air chamber 18 is used to realize the service brake and parking brake of the front axle 2; the inertia brake 20 is used to realize the emergency brake of the trailer when the tractor brakes.

[0051] The output ends of the air supply control systems associated with the APU9 are respectively connected to the first air storage tank 10, the second air storage tank 13, the third air storage tank 16, and the parking valve 19. The output end of the parking valve 19 is respectively connected to the rear axle brake air chamber 15 and the rear chamber of the front axle brake air chamber 18. The output end of the second air storage tank 13 is connected to the rear axle relay valve 14, and the output end of the rear axle relay valve 14 is connected to the front chamber of the rear axle brake air chamber 15. The output end of the third air storage tank 16 is connected to the front axle relay valve 17, and the output end of the front axle relay valve 17 is connected to the front chamber of the front axle brake air chamber 18. The output end of the first air storage tank 10 is connected to the air inlet end of the airbag suspension 4; the high-pressure gas produced by the air compressor 7 is controlled and distributed by the APU9 and stored in the first air storage tank 10, the second air storage tank 13, and the third air storage tank 16.

[0052] The inertia brake 20 includes a follower mechanism 20.1 fixed to the axle 2, a runner 20.2 that can roll back and forth in the inner cavity of the follower mechanism 20.1, a brake cable 20.3 connected to the runner 20.2, and a brake air valve 20.4 with the top of the swinging handle connected to the rear end of the brake cable 20.3. The air inlet end of the brake air valve 20.4 is connected to the third air storage tank 16, and the output end of the brake air valve 20.4 is connected to the rear axle relay valve 14 and the front axle relay valve 17. Among them, strip-shaped chutes 20.1.1 are respectively arranged longitudinally on both side walls of the follower mechanism 20.1. The two ends of the central axis of the runner 20.2 are respectively slidably clamped in the strip-shaped chutes 20.1.1, and limiting rings 20.2.1 are respectively sleeved at the positions of the two ends of the central axis of the runner 20.2 corresponding to the outer side wall of the follower mechanism 20.1. When the tractor brakes, due to inertia, the runner 20.2 will move forward, thereby pulling the brake cable 20.3, causing the handle of the brake air valve 20.4 to swing forward, so as to introduce the high-pressure gas stored in the third air storage tank 16 into the front axle relay valve 17 and the rear axle relay valve 14. The high-pressure gas enters the front chambers of the rear axle brake air chamber 15 and the front axle brake air chamber 18 to achieve service braking. The mass of the runner 20.2 should match the handle operating torque of the brake air valve 20.4. Usually, the mass of the runner 20.2 is between 2 and 5 kilograms.

[0053] The front axle service braking control air circuit is: the third air storage tank 16 → the brake air valve 20.4 → the control inlet of the front axle relay valve 17 → the front chamber of the front axle brake air chamber 18 to achieve service braking on the front axle side.

[0054] The rear axle service braking control air circuit is: the third air storage tank 16 → the brake air valve 20.4 → the control inlet of the rear axle relay valve 14 → the front chamber of the rear axle brake air chamber 15 to achieve service braking on the rear axle side.

[0055] The front axle parking control air circuit is: the second air storage tank 13 → the parking valve 19 → the rear chamber of the front axle brake air chamber 18 to achieve parking braking on the front axle side.

[0056] The parking control air circuit for the rear axle is as follows: air storage tank two 13 → parking valve 19 → rear chamber of the rear axle brake air chamber 15, so as to realize the parking brake on the rear axle side.

[0057] Two three-way joints 11 are connected to the output end of air storage tank one 10. The output ends of the three-way joints 11 are respectively connected to height valves 12, and the output ends of the height valves 12 are connected to the input ends of the corresponding air bags 4.2. That is, the high-pressure gas in the air storage tank one 10 is supplied into the air bags 4.2 through the three-way joints 11 and the height valves 12, so as to realize the adjustment of each air bag suspension 4.

[0058] In order to ensure the service life of the pneumatic actuators, an air filter 8 is also provided at the front part of the vehicle frame 1 and assembled at the intake end of the air compressor 7 to ensure the purity of the compressed gas.

[0059] A regulating bolt 20.5 is threadedly sleeved in the middle of the front wall of the follow-up mechanism 20.1. That is, by adjusting the regulating bolt 20.5, the stroke of the front and rear movement of the runner 20.2 can be adjusted, so as to realize the flexible adjustment of the maximum braking force.

[0060] Specifically, when using this semi-trailer to transport the tank body, a tray can be connected through a buffer pad on the top surface of the vehicle frame, and the tank body is fixed on the tray. To reduce the impact on the tank body during driving and improve safety.

[0061] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0062] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A safety air suspension trailer, comprising a frame (1), an axle (2) arranged below the front and rear parts of the frame (1), and tires (3) mounted on both ends of the axle (2), characterized in that: Also includes: An airbag suspension (4), the bottom of the airbag suspension (4) being connected to the vehicle axle (2), and the top of the airbag suspension (4) being connected to the bottom of the vehicle frame (1); A rear axle brake air chamber (15), the rear axle brake air chamber (15) being used to implement driving brakes and parking brakes of the rear axle (2); A front axle brake air chamber (18), the front axle brake air chamber (18) being used to implement driving brakes and parking brakes of the front axle (2); An inertia brake (20), wherein the inertia brake (20) is used to achieve emergency braking of the trailer when the tractor brakes; APU (9), the output end of the air supply control system associated with the APU (9) is respectively connected to an air reservoir 1 (10), an air reservoir 2 (13), an air reservoir 3 (16) and a parking valve (19), the output end of the parking valve (19) is respectively connected to the rear chambers of the rear axle brake air chamber (15) and the front axle brake air chamber (18), the output end of the air reservoir 2 (13) is connected to a rear axle relay valve (14), the output end of the rear axle relay valve (14) is connected to the front chamber of the rear axle brake air chamber (15), the output end of the air reservoir 3 (16) is connected to a front axle relay valve (17), the output end of the front axle relay valve (17) is connected to the front chamber of the front axle brake air chamber (18), and the output end of the air reservoir 1 (10) is connected to the air inlet end of the airbag suspension (4); A storage battery (5), a generator (6) and an air compressor (7) are sequentially arranged at the front of the vehicle frame (1); the electric energy generated by the generator (6) is stored in the storage battery (5); the storage battery (5) supplies power to the air compressor (7); and the air outlet of the air compressor (7) is connected to the input end of the air supply control system; The tire (3) is a solid tire.

2. The safety air suspension trailer according to claim 1, characterized in that: The airbag suspension (4) comprises a connecting frame (4.1) whose middle part is fixed to a position close to an end of the axle (2), an airbag (4.2) whose bottom end is fixed to a rear end of the connecting frame (4.1) and whose top end is connected to the frame (1), a connecting seat (4.3) whose bottom is hinged to a front end of the connecting frame (4.1) and connected to the frame (1), and a shock absorber (4.4) whose top end is hinged to the connecting seat (4.3) and whose bottom end is hinged to the axle (2).

3. The safety air suspension trailer according to claim 2, characterized in that: The output end of the air storage cylinder 1 (10) is connected to two three-way connectors (11), the output ends of the three-way connectors (11) are respectively connected to height valves (12), and the output ends of the height valves (12) are connected to the input ends of the corresponding air bags (4.2).

4. The safety air suspension trailer according to claim 2, characterized in that: A leaf spring is arranged at a position above the airbag suspension (4) at the bottom of the vehicle frame (1); the top of the airbag (4.2) is connected to the rear end of the bottom of the corresponding leaf spring; and the top of the connecting seat (4.3) is connected to the front end of the bottom of the corresponding leaf spring.

5. The safety air suspension trailer according to claim 1, characterized in that: Limiting slots (2.1) are respectively fixed on both sides of the middle of the top surface of the vehicle bridge (2), a rubber pad (2.2) is provided at the bottom of the inner cavity of the limiting slot (2.1), and a longitudinal beam (1.3) is fixed on the bottom surface of the vehicle frame (1) at a position corresponding to the inner cavity of the limiting slot (2.1).

6. The safety air suspension trailer according to claim 1, characterized in that: A turntable ( 1.1), the front end of the turntable (1.1) is hinged with a tripod (1.2) for connecting to a tractor.

7. The safety air suspension trailer according to claim 1, characterized in that: The front part of the vehicle frame (1) is also provided with an air filter (8) mounted on the air intake end of the air compressor (7).

8. The safety air suspension trailer according to claim 1, characterized in that: The inertia brake (20) comprises a follower mechanism (20.1) fixed on the vehicle axle (2), a rotating wheel (20.2) capable of rolling forward and backward along the inner cavity of the follower mechanism (20.1), a brake cable (20.3) connected to the rotating wheel (20.2), and a brake air valve (20.4) having a top end of a swing handle connected to a rear end of the brake cable (20.3), an air inlet end of the brake air valve (20.4) connected to the air reservoir three (16), and an output end of the brake air valve (20.4) connected to the rear axle relay valve (14) and the front axle relay valve (17).

9. The safety air suspension trailer according to claim 8, characterized in that: The two side walls of the follower mechanism (20.1) are respectively provided with strip-shaped sliding grooves ( 20.1.1), the central axis of the rotating wheel (20.2) is slidably engaged with the strip-shaped slide grooves ( 20.1.1), and limiting rings (20.2.1) are respectively mounted on the two ends of the central axis of the rotating wheel (20.2) at positions corresponding to the outer side walls of the follower mechanism (20.1).

10. The safety air suspension trailer according to claim 8, characterized in that: An adjusting bolt (20.5) is threadedly sleeved on the middle portion of the front wall of the follower mechanism (20.1).

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