Safety type air suspension full trailer

Abstract

The invention 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 invention relates to the technical field of full trailers, in particular to a safety 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 the transportation of precision goods based on the original semi-trailer and combined trailer to meet the needs of the transportation market. At present, most of the precision goods in China are transported by land using ordinary trailers. Although the transportation cost is controlled, there are also some disadvantages. For example, the commonly used trailers use pneumatic tires. When the tires are deflated, it is easy to cause the vehicle to tilt, which may lead to damage to the goods or leakage of dangerous goods.

[0003] In addition, when the tractor and trailer are fully loaded, they have large mass and large inertia; and some tractors only use mechanical and hydraulic brakes, while trailers do not have controllable brake systems. When driving a tractor or trailer downhill on a slippery road, the trailer may push the tractor and may cause a folding effect, thus affecting the safe driving of the vehicle.

[0004] Therefore, designing a universal, reliable, comfortable and safe trailer with its own air source and follow-up brake is an inevitable demand of the transportation market. Summary of the invention

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

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a safe air suspension trailer, comprising a frame, an axle arranged below the front and rear parts of the frame, and tires mounted on both ends of the axle, 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 realize the service braking and parking braking of the rear axle; the front axle brake air chamber is used to realize the service braking and parking braking of the front axle; the inertia brake is used to realize the emergency braking of the trailer when the tractor brakes; the output end of the air supply control system associated with the APU is respectively connected to air reservoir 1, air reservoir 2, air reservoir 3 and a parking valve, the The output end of the parking valve is respectively connected to the rear cavities of the rear axle brake air chamber and the front axle brake air chamber, the output end of the air reservoir two is connected to the 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 reservoir three is connected to the 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 reservoir one is connected to the air inlet end of the airbag suspension; the front part of the frame is sequentially provided with a battery, a generator and an air compressor, the electric energy generated by the generator is stored in the battery, the 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.

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

[0008] Preferably, the output end of the air storage cylinder 1 is connected to two three-way connectors, the output ends of the three-way connectors are respectively connected to height valves, and the output ends of the height valves are connected to the input ends of the corresponding airbags.

[0009] Preferably, a leaf spring is provided at the bottom of the frame above the airbag suspension, 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 slots are fixed on both sides of the middle of the top surface of the axle, a rubber pad is provided at the bottom of the inner cavity of the limiting slot, and a longitudinal beam is fixed on the bottom surface of the frame at a position corresponding to the inner cavity of the limiting slot.

[0011] Preferably, a turntable is rotatably mounted at the bottom of the front end of the frame, and a tripod for connecting to a tractor is hinged at the front end of the turntable.

[0012] Preferably, the front portion of the frame is also provided with an air filter mounted on the air intake end of the air compressor.

[0013] Preferably, the inertia brake includes a follower mechanism fixed on the vehicle axle, a rotating wheel that can roll back and forth along the inner cavity of the follower mechanism, a brake cable connected to the rotating wheel, and a brake valve whose top end of a swing handle is connected to the rear end of the brake cable, the air inlet end of the brake valve is connected to the air reservoir three, and the output end of the brake valve is connected to the rear axle relay valve and the front axle relay valve.

[0014] Preferably, the two side walls of the follower mechanism are respectively provided with strip grooves in the longitudinal direction, the central axis of the rotating wheel is slidably engaged in the strip grooves near both ends, and the two ends of the central axis of the rotating wheel are respectively provided with limit rings at positions corresponding to the outer side walls of the follower mechanism.

[0015] Preferably, an adjusting bolt is threadedly mounted on the middle portion of the front wall of the follower mechanism.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The invention relates to a safety air suspension trailer which is equipped with an air compressor to form a self-inflating system and can provide air bag pressure and brake air pressure. The trailer has an inertia brake and can achieve emergency braking of the trailer when the tractor brakes in an emergency, thereby ensuring driving safety. The combination of a solid tire and an air bag suspension not only improves the reliability of the trailer, but also ensures driving smoothness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall top view of the present invention; Figure 2 It is a schematic side view of the structure of the present invention as a whole; Figure 3 It is a schematic diagram of the pneumatic control system of the present invention; Figure 4 It is a side structural schematic diagram of the inertia brake of the present invention; Figure 5 It is a bottom view structural schematic diagram of the follower mechanism of the present invention; Figure 6 It is a side view structural schematic diagram of the brake valve of the present invention; Figure 7 It is a schematic diagram of the rear view structure of the whole invention.

[0018] In the figure: 1-frame; 1.1-turntable; 1.2-tripod; 1.3-longitudinal beam; 2- axle; 2.1- limit slot; 2.2- rubber pad; 3- Tires; 4-airbag suspension; 4.1-connecting frame; 4.2-airbag; 4.3-connecting seat; 4.4-shock absorber; 5-Battery; 6-Generator; 7-Air compressor; 8- Air filter; 9- APU; 10- Gas cylinder one; 11- tee connector; 12-Altitude valve; 13- Gas reservoir 2; 14-Rear axle relay valve; 15- rear axle brake chamber; 16- Gas reservoir three; 17-Front axle relay valve; 18-front axle brake chamber; 19-parking valve; 20-inertia brake; 20.1-follow-up mechanism; 20.1.1-strip slideway; 20.2-rotating wheel; 20.2.1-limiting ring; 20.3-brake cable; 20.4-brake air valve; 20.5-adjusting bolt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-7 The present invention provides a technical solution, 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, wherein the tires 3 are solid rubber tires; a turntable 1.1 is rotatably mounted at the bottom of the front end of the frame 1, and a tripod 1.2 for connecting a tractor is hinged at the front end of the turntable 1.1, that is, the turntable 1.1 can be flexibly rotated in the horizontal direction relative to the frame 1 to ensure the safety and smoothness of the vehicle when turning; the rear end of the tripod 1.2 can be flexibly swung up and down 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 a hook.

[0021] Solid tires have strong durability and reliability, but are not convenient for the smooth form of full trailers, so 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 frame 1; wherein the airbag suspension 4 includes a connecting frame 4.1 fixed in the middle to the axle 2 near the end position, an airbag 4.2 whose bottom end is fixed to the 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 the 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. In addition, in order to avoid the loss of elastic support for the frame 1 when the airbag 4.2 is damaged, a leaf spring is arranged at the bottom of the frame 1 above the airbag suspension 4, the top of the airbag 4.2 is connected to the rear end of the corresponding leaf spring bottom, and the top of the connecting seat 4.3 is connected to the front end of the corresponding leaf spring bottom, that is, through the arrangement of the airbag 4.2 and the leaf spring in series, a double insurance effect is played to ensure the reliability of the suspension.

[0022] Limiting slots 2.1 are fixed on both sides of the middle of the top surface of the axle 2, and a rubber pad 2.2 is provided at the bottom of the inner cavity of the limiting slot 2.1. A longitudinal beam 1.3 is fixed on the bottom surface of the frame 1 at a position corresponding to the inner cavity of the limiting slot 2.1. It is used to effectively support the frame 1 when the airbag suspension 4 fails, so as to prevent the frame 1 from tilting too much and causing the cargo to slide.

[0023] The front part of the vehicle frame 1 is provided with a battery 5, a generator 6 and an air compressor 7 in sequence. The electric energy generated by the generator 6 is stored in the battery 5, and the battery 5 supplies power to the air compressor 7. The air outlet of the air compressor 7 is connected to the input end of the air supply control system. The generator 6 is a gasoline generator or a diesel generator, and the battery 5 is a rechargeable lithium battery, which 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.

[0024] The rear axle brake chamber 15 is used to realize the service brake and parking brake of the rear axle 2; the front axle brake 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.

[0025] The output ends of the air supply control system associated with APU9 are respectively connected to air cylinder 10, air cylinder 2 13, air cylinder 3 16 and parking valve 19. The output ends of parking valve 19 are respectively connected to the rear cavities of rear axle brake air chamber 15 and front axle brake air chamber 18. The output end of air cylinder 2 13 is connected to rear axle relay valve 14. The output end of rear axle relay valve 14 is connected to the front cavity of rear axle brake air chamber 15. The output end of air cylinder 3 16 is connected to front axle relay valve 17. The output end of front axle relay valve 17 is connected to the front cavity of front axle brake air chamber 18. The output end of air cylinder 10 is connected to the air inlet end of airbag suspension 4. The high-pressure gas produced by air compressor 7 is stored in air cylinder 10, air cylinder 2 13 and air cylinder 3 16 after being controlled and distributed by APU9.

[0026] The inertia brake 20 comprises a follow-up mechanism 20.1 fixed on the vehicle axle 2, a rotating wheel 20.2 that can roll forward and backward along the inner cavity of the follow-up mechanism 20.1, a brake cable 20.3 connected to the rotating wheel 20.2, and a brake air valve 20.4 whose top end of a swing handle is 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 air reservoir 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. The two side walls of the follow-up mechanism 20.1 are respectively provided with strip chute 20.1.1 in the longitudinal direction, the central axis of the rotating wheel 20.2 is respectively slidably engaged in the strip chute 20.1.1 near both ends, and the two ends of the central axis of the rotating wheel 20.2 are respectively provided with limit rings 20.2.1 at positions corresponding to the outer side walls of the follow-up mechanism 20.1. When the tractor brakes, due to inertia, the wheel 20.2 moves forward, thereby pulling the brake cable 20.3, causing the handle of the brake valve 20.4 to swing forward, so that the high-pressure gas stored in the gas reservoir 16 is passed into the front axle relay valve 17 and the rear axle relay valve 14, and the high-pressure gas enters the front chamber of the rear axle brake chamber 15 and the front axle brake chamber 18 to achieve service braking. The mass of the wheel 20.2 must match the operating torque of the handle of the brake valve 20.4, and the mass of the wheel 20.2 is usually between 2 and 5 kilograms.

[0027] The front axle brake control air circuit is: air reservoir three 16 → brake air valve 20.4 → control inlet of front axle relay valve 17 → front cavity of front axle brake air chamber 18, so as to realize service braking on the front axle side.

[0028] The rear axle brake control air circuit is: air reservoir three 16 → brake air valve 20.4 → control inlet of rear axle relay valve 14 → front cavity of rear axle brake air chamber 15, so as to realize service braking on the rear axle side.

[0029] The front axle parking control air circuit is: air reservoir 13 → parking valve 19 → rear cavity of front axle brake air chamber 18, so as to realize the parking brake on the front axle side.

[0030] The rear axle parking control air circuit is: air reservoir 13 → parking valve 19 → rear chamber of rear axle brake air chamber 15, so as to realize the parking brake on the rear axle side.

[0031] The output end of the air reservoir 10 is connected to two three-way joints 11, and the output ends of the three-way joints 11 are respectively connected to height valves 12. The output ends of the height valves 12 are connected to the input ends of the corresponding airbags 4.2, that is, the high-pressure gas in the air reservoir 10 is supplied to the airbags 4.2 via the three-way joints 11 and the height valves 12 to achieve the adjustment of each airbag suspension 4.

[0032] In order to ensure the service life of the pneumatic actuator, the front part of the frame 1 is also provided with an air filter 8 mounted on the air inlet end of the air compressor 7 to ensure the purity of the compressed gas.

[0033] The middle thread sleeve of the front wall of the follower mechanism 20.1 is provided with an adjusting bolt 20.5. That is, the stroke of the running wheel 20.2 moving forward and backward can be adjusted by adjusting the bolt 20.5, thereby realizing the flexible adjustment of the maximum braking force.

[0034] Specifically, when the full trailer is used to transport the tank body, a pallet can be connected to the top surface of the frame through a buffer pad, and the tank body is fixed on the pallet, so as to reduce the impact on the tank body during driving and improve safety.

[0035] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that 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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