Trailer chassis capable of being dragged and self-propelled

Abstract

The invention provides a trailer chassis capable of being dragged and self-propelled, and mainly relates to the technical field of trailer chassis. A trailer chassis capable of being dragged and self-propelled is characterized in that the trailer chassis adopts a driving structure that a front axle can be steered by wheels and a rear axle has power, a traction rod is hung on a tractor and runs along with the tractor when the trailer chassis is dragged, a hydraulic inertia braking system is adopted for service braking during dragging, and when the trailer chassis is switched to a self-propelled state, the traction rod is driven by the hydraulic inertia braking system to run along with the tractor. Power is switched to a rear axle driven by a motor or an oil motor through a gear shifting handle, the rear axle drives a trailer chassis to walk, a front axle steers through a hydraulic oil cylinder or an electric push rod, and braking is conducted through an electric control brake pump. According to the invention, a power and steering system is added to the trailer in a relatively economical form, so that the trailer can run autonomously, and the power and steering system can be disconnected very conveniently during dragging, so that the trailer can be dragged quickly in a long distance, and different trailer use scenes can be better met.

Description

Technical Field

[0001] The invention mainly relates to the technical field of trailer chassis, in particular to a trailer chassis which can be towed and can move on its own. Background Art

[0002] A trailer refers to a vehicle towed by a car but without its own power drive device. Usually the towing car is called the main vehicle, and the driven vehicle towed by the main vehicle is called the trailer. Using trailers for transportation is the simplest and most effective means to improve economic efficiency, and it has the advantages of speed, mobility, flexibility and safety.

[0003] The automobile chassis is a self-powered vehicle, but the cost of the automobile chassis is relatively high. In some applications, such as mobile generators and emergency firefighting equipment, the economic efficiency of the chassis is relatively poor. The trailer chassis is more economical, but the trailer chassis itself has no power and needs to be towed by a tractor when moving. In some applications, the equipment is often required to move autonomously in the work site without a tractor to find a suitable working position.

[0004] In view of this, there is a need for a trailer chassis that is economical, can be towed and can travel on its own, to better meet the needs of some trailer usage scenarios. Summary of the invention

[0005] To solve the deficiencies of the prior art, the present invention provides a trailer chassis that can be towed and self-propelled, which enables the trailer to travel autonomously and can conveniently disconnect the power and steering system during towing, so as to tow quickly and over long distances.

[0006] In order to achieve the above object, the present invention is implemented through the following technical solutions: A trailer chassis that can be towed and can move on its own comprises a frame, a steering mechanism is installed on the front side of the bottom of the frame, a traction rod is rotatably installed on the front part of the steering mechanism, a hydraulic inertia brake device is provided on the front part of the traction rod, a front axle is provided on the front side of the bottom of the frame, wheels are movably installed on both sides of the front axle, a power source is fixedly installed on one side of the frame, a driving rear axle is installed on the rear side of the bottom of the frame via a leaf spring assembly, and an electronically controlled brake pump and a shift handle are arranged in the frame.

[0007] The steering mechanism comprises a bogie, which is movably mounted on the front side of the bottom of the frame. A steering push rod is movably mounted on the bogie, and the other end of the steering push rod is movably mounted on the frame.

[0008] A driving motor is fixedly installed in the middle of the driving rear axle.

[0009] The hydraulic inertia brake device comprises a housing, a traction ring is movably mounted on the front of the housing, an impact shock absorber is arranged inside the traction ring, one end of the impact shock absorber is rotatably connected to the inside of the housing, and a brake oil pump is arranged inside the housing.

[0010] Compared with the prior art, the beneficial effects of the present invention are: The present invention can add power and steering systems to a trailer in a relatively economical manner, so that the trailer can travel autonomously, and the power and steering systems can be conveniently disconnected during towing, so that the trailer can be towed quickly and over long distances, so as to better meet different trailer usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the trailer chassis of the present invention; Figure 2 It is a structural schematic diagram of the hydraulic inertia braking device of the present invention.

[0012] The numbers shown in the accompanying drawings are: 1. hydraulic inertia brake device; 2. traction rod; 3. bogie; 4. steering push rod; 5. front axle; 6. electronically controlled brake pump; 7. shift handle; 8. drive motor; 9. drive rear axle; 10. power source; 11. frame; 12. wheel; 15. traction hook; 16. housing; 17. shock absorber; 18. brake oil pump. DETAILED DESCRIPTION

[0013] The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art may make various changes or modifications to the present invention, and these equivalent forms also fall within the scope limited by the application.

[0014] Combined with Figure 1-Figure 2 A trailer chassis that can be towed and can move on its own, includes a frame 11, a steering mechanism is installed on the front side of the bottom of the frame 11, a traction rod 2 is rotatably installed on the front of the steering mechanism, a hydraulic inertia brake device 1 is provided on the front of the traction rod 2, a front axle 5 is provided on the front side of the bottom of the frame 11, wheels 12 are movably installed on both sides of the front axle 5, a power source 10 is fixedly installed on one side of the frame 11, a driving rear axle 9 is installed on the rear side of the bottom of the frame 11 through a leaf spring assembly, and an electronically controlled brake pump 6 and a shift handle 7 are arranged in the frame 11.

[0015] The steering mechanism comprises a bogie 3 , which is movably mounted on the front bottom side of a vehicle frame 11 , and a steering push rod 4 is movably mounted on the bogie 3 , and the other end of the steering push rod 4 is movably mounted on the vehicle frame 11 .

[0016] A driving motor 8 is fixedly installed in the middle of the driving rear axle 9; a main reducer is arranged between the driving motor 8 and the driving rear axle; the driving motor 8 is a driving electric motor or an oil motor.

[0017] The hydraulic inertia brake device 1 comprises a housing 16 , a traction ring 15 is movably mounted on the front of the housing 16 , an impact damper 17 is arranged inside the traction ring 15 , one end of the impact damper 17 is rotatably connected to the inside of the housing 16 , and a brake oil pump 18 is arranged inside the housing 16 .

[0018] When the trailer chassis is towing, the gear position of the main reducer on the driving rear axle 9 is switched to neutral through the shift handle 7, cutting off the power transmission from the main reducer to the axle wheel side, so that the wheel can rotate freely.

[0019] When the trailer chassis is towing, the traction rod 2 drives the bogie 3 to rotate left and right, and drives the wheels to rotate left and right through the steering rod, so that the trailer chassis can turn when towing.

[0020] When the trailer chassis is towing, braking is provided by a hydraulic inertia brake device 1 installed on the towing rod 2, which includes: a towing ring 15, a housing 16, an impact shock absorber 17, a brake oil pump 18, etc. When the hydraulic inertia brake device 1 brakes the tractor, the tractor hook will generate an inertial impact force on the towing ring 15, which pushes the towing ring 15 to move backward, pushing the brake oil pump 18 to generate brake oil pressure, and the brake oil pressure is output to the brake cylinder of the axle brake through the pipeline to generate braking force.

[0021] When the trailer chassis is moving by itself, the shift handle 7 is used to control the main reducer on the rear axle 9 to engage the forward gear, and the drive motor or oil motor drives the rear axle main reducer to transmit power to the wheel side to drive the trailer chassis to move; When the trailer chassis is self-propelled, the hydraulic cylinder or the electric push rod 4 pushes the bogie 3 to rotate left and right, and drives the front axle wheels to rotate left and right through the tie rod to realize the steering of the trailer chassis.

[0022] When the trailer chassis is moving on its own, the electronically controlled brake pump 6 is used for braking; When the trailer chassis is self-propelled, the driving motor or oil motor power is provided by the battery pack or hydraulic station; When the trailer chassis is moving on its own, the speed, forward movement, backward movement, steering and braking of the trailer chassis are controlled by a remote control or a wired controller.

[0023] The front axle of the trailer chassis can adopt a torsion plate suspension or a steel plate suspension.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A trailer chassis capable of both towing and self-propelled, comprising a frame (11), characterized in that: A steering mechanism is installed at the front bottom of the frame (11), a traction rod (2) is rotatably installed at the front of the steering mechanism, a hydraulic inertia brake device (1) is provided at the front of the traction rod (2), a front axle (5) is provided at the front bottom of the frame (11), wheels (12) are movably installed on both sides of the front axle (5), a power source (10) is fixedly installed at one side of the frame (11), a driving rear axle (9) is installed at the rear bottom of the frame (11) via a leaf spring assembly, and an electronically controlled brake pump (6) and a shift handle (7) are arranged in the frame (11).

2. A trailer chassis capable of both towing and self-propelled according to claim 1, characterized in that: The steering mechanism comprises a bogie (3), the bogie (3) being movably mounted on the front side of the bottom of a vehicle frame (11), a steering push rod (4) being movably mounted on the bogie (3), and the other end of the steering push rod (4) being movably mounted on the vehicle frame (11).

3. The trailer chassis capable of both towing and self-propelled according to claim 1, characterized in that: A driving motor (8) is fixedly mounted in the middle of the driving rear axle (9).

4. The trailer chassis capable of both towing and self-propelled according to claim 1, characterized in that: The hydraulic inertia brake device (1) comprises a housing (16), a traction ring (15) being movably mounted on the front of the housing (16), an impact shock absorber (17) being arranged inside the traction ring (15), one end of the impact shock absorber (17) being rotatably connected to the interior of the housing (16), and a brake oil pump (18) being arranged inside the housing (16).

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