Independent suspension trailer with air bag damping function

Abstract

The utility model belongs to the technical field of independent suspension trailers, and particularly relates to an independent suspension trailer with an air bag for shock absorption, which comprises a trailer main frame, through shafts are inserted into the lower side of the trailer main frame in bilateral symmetry, swing arms are rotatably connected to the front end and the rear end of each through shaft, and wheels are rotatably connected to the opposite sides of the swing arms on the front side and the rear side. Oil cylinders are movably hinged to the opposite sides of the swing arms on the front side and the rear side, shock absorption seats are symmetrically connected to the front side and the rear side of the trailer main frame and located on the opposite sides of the swing arms, air bag shock absorbers are movably installed on the inner sides of the shock absorption seats, and the ends, close to the swing arms, of the air bag shock absorbers are movably hinged to the inner side walls of the shock absorption seats. The problems that an existing device is poor in damping effect, a hauled vehicle is prone to being damaged, and inconvenience is caused are solved; in an existing device, when a main vehicle brakes or decelerates, a trailer cannot decelerate in time, a traction part is broken, even the trailer collides with the rear of the main vehicle, and losses are caused.

Description

Technical Field

[0001] The utility model relates to the technical field of independent suspension trailers, in particular to an independent suspension trailer with air bag shock absorption. Background Art

[0002] A trailer is a vehicle towed by a car but without its own power drive device. It is a combination of a car (truck or tractor, forklift) and one or more trailers. The truck and tractor are the driving vehicle sections of the car train, called the main vehicle; the driven vehicle section towed by the main vehicle is called the trailer. It is an important type of vehicle for road transportation and also the most effective and simple means to improve economic efficiency.

[0003] When a trailer is towed on the road, bumps on the road surface will cause the trailer to vibrate, and the existing device has a poor shock absorption effect, which is easy to cause damage to the towed vehicle and is relatively inconvenient. In addition, when the main vehicle tows the trailer device on the road, when the main vehicle brakes or decelerates, the mechanical inertia will drive the trailer to continue moving, and it cannot decelerate in time, causing the towing part to break, and even the trailer will hit the rear of the main vehicle, causing losses. Therefore, an independent suspension trailer with airbag shock absorption is proposed herein. Utility Model Content

[0004] The purpose of the utility model is to provide an independent suspension trailer with airbag shock absorption, so as to solve the problem that the existing device proposed in the above background technology has poor shock absorption effect, easily causes damage to the towed vehicle, and is relatively inconvenient; in the existing device, when the main vehicle brakes or slows down, the trailer cannot slow down in time, causing the towing part to break, and even the trailer will collide with the rear of the main vehicle, causing losses.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an independent suspension trailer with airbag shock absorption, comprising a trailer main frame, a through shaft is symmetrically inserted on the lower side of the trailer main frame, the front and rear ends of the through shaft are rotatably connected to a swing arm, the opposite sides of the swing arms on the front and rear sides are rotatably connected to wheels, the opposite sides of the swing arms on the front and rear sides are movably hinged with oil cylinders, the front and rear sides of the trailer main frame are symmetrically connected to shock absorber seats, the shock absorber seats are located on opposite sides of the swing arms, an airbag shock absorber is movably installed on the inner side of the shock absorber seat, one end of the airbag shock absorber close to the swing arm is movably hinged to the inner side wall of the shock absorber seat, the inner side of the shock absorber seat is movably hinged to a crank arm away from the swing arm, one end of the airbag shock absorber away from the swing arm is movably hinged to the lower end of the crank arm, and the fixed end of the oil cylinder is movably hinged to the upper end of the crank arm.

[0006] Preferably, a fender is fixedly connected to the upper side of the swing arm, and the fender is located on the upper side of the wheel.

[0007] Preferably, opposite sides of the swing arms at the front and rear sides are movably hinged with fixed locks, and the fixed locks are clamped with the telescopic ends of the oil cylinder.

[0008] Preferably, a baffle is movably hinged on the right side of the trailer main frame, and a connecting support frame is symmetrically connected to the left side of the trailer main frame.

[0009] Preferably, a traction rod is fixedly connected to the left side of the trailer main frame, a connecting seat is fixedly connected to the left side of the traction rod, and the opposite ends of the front and rear connecting brackets are fixedly connected to the front and rear sides of the traction rod.

[0010] Preferably, a telescopic sleeve column is symmetrically connected to the left side of the trailer main frame, a telescopic spring is fixedly connected to the right side wall inside the telescopic sleeve column, a telescopic rod is fixedly connected to the left end of the telescopic spring, the telescopic rod is movably connected to the telescopic sleeve column, and the telescopic sleeve column is located on the upper side of the connecting bracket.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] 1) When the device is moving, when the traction vehicle brakes or slows down, the trailer main frame continues to move forward due to mechanical inertia. The two connecting brackets and the telescopic sleeve can stabilize the trailer main frame to prevent it from breaking. The forward inertia pushes the telescopic rod inward to squeeze the telescopic spring, buffering the device and avoiding it from hitting the traction vehicle.

[0013] 2) The device generates vibration. When the trailer bumps, the wheels move up and down, pushing the swing arm to rotate. The rotation of the swing arm pushes the oil cylinder to extend and retract. The oil cylinder then pushes the crank arm. Through the principle of leverage, the lower end of the crank arm pushes the airbag shock absorber, so that the telescopic end of the oil cylinder offsets the impact of the vibration with the help of the airbag shock absorber and the reverse thrust of the oil cylinder itself, thereby stabilizing the trailer and achieving a better shock absorption effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the top view structure of the utility model;

[0015] Figure 2 This is a left-side structural schematic diagram of the utility model;

[0016] Figure 3 It is a schematic diagram of the structure of the shock absorber from a top view;

[0017] Figure 4 It is a schematic diagram of the through-axis right view structure.

[0018] In the figure: 1. trailer main frame, 2. through axle, 3. swing arm, 4. wheel, 5. oil cylinder, 6. shock absorber seat, 7. airbag shock absorber, 8. crank arm, 9. mudguard, 10. fixed lock, 11. baffle, 12. connecting support frame, 13. traction rod, 14. connecting seat, 15. telescopic sleeve column, 16. telescopic spring, 17. telescopic rod. DETAILED DESCRIPTION

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

[0020] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] Example:

[0022] See also Figure 1-4 The utility model provides a technical solution: an independent suspension trailer with airbag shock absorption, including a trailer main frame 1, a transport vehicle is placed on the upper side of the trailer main frame 1, a through shaft 2 is symmetrically inserted on the lower side of the trailer main frame 1, the front and rear ends of the through shaft 2 are rotatably connected with a swing arm 3, the opposite sides of the front and rear swing arms 3 are rotatably connected with wheels 4, the opposite sides of the front and rear swing arms 3 are movably hinged with oil cylinders 5, the front and rear sides of the trailer main frame 1 are symmetrically connected with shock absorber seats 6, the shock absorber seats 6 are located on the opposite sides of the swing arms 3, an airbag shock absorber 7 is movably installed on the inner side of the shock absorber seat 6, and the airbag shock absorber 7 is close to the swing arm One end of the shock absorber 3 is movably hinged with the inner side wall of the shock absorber seat 6, and the side wall of the inner side of the shock absorber seat 6 away from the swing arm 3 is movably hinged with a crank arm 8. The wheel 4 moves up and down, pushing the swing arm 3 to rotate. The swing arm 3 rotates to push the oil cylinder 5 to extend and retract, and the oil cylinder 5 then pushes the crank arm 8. Through the principle of leverage, the lower end of the crank arm 8 pushes the airbag shock absorber 7, so that the telescopic end of the oil cylinder 5 offsets the impact of the vibration with the help of the airbag shock absorber 7 and the reverse thrust of the oil cylinder 5 itself, so as to stabilize the trailer. The end of the airbag shock absorber 7 away from the swing arm 3 is movably hinged with the lower end of the crank arm 8, and the fixed end of the oil cylinder 5 is movably hinged with the upper end of the crank arm 8.

[0023] Among them, a fender 9 is fixedly connected to the upper side of the swing arm 3, and the fender 9 is located on the upper side of the wheel 4, which is used to block the mud thrown out of the wheel 4 when the device is moving. The opposite sides of the front and rear swing arms 3 are movably hinged with fixed locks 10, and the fixed locks 10 are clamped with the telescopic end of the cylinder 5, which are used to clamp the telescopic end of the cylinder 5 to prevent the cylinder 5 from being damaged and causing the device to lose balance and avoid danger. A baffle 11 is movably hinged on the right side of the trailer main frame 1, and a connecting support frame 12 is symmetrically connected to the front and rear of the left side of the trailer main frame 1. A traction rod 13 is fixedly connected to the left side of the trailer main frame 1. The traction main vehicle drives the device through the traction rod 13, so that the traction main vehicle can drive the device to move forward. The left side of the traction rod 13 is fixedly connected There is a connecting seat 14, which is connected to the traction main vehicle. The opposite ends of the front and rear connecting brackets 12 are fixedly connected to the front and rear sides of the traction rod 13. The two connecting brackets 12 and the telescopic sleeve column 15 can stabilize the trailer main frame 1 to avoid breakage. The left side of the trailer main frame 1 is symmetrically connected to the front and rear telescopic sleeve columns 15. The right side wall inside the telescopic sleeve column 15 is fixedly connected with a telescopic spring 16. The left end of the telescopic spring 16 is fixedly connected with a telescopic rod 17. The telescopic rod 17 is movably connected to the telescopic sleeve column 15. The inertia of the device moving forward pushes the telescopic rod 17 to squeeze the telescopic spring 16 inward to buffer the device and avoid hitting the traction main vehicle. The telescopic sleeve column 15 is located on the upper side of the connecting bracket 12.

[0024] Working principle: When the device is moving, the transport vehicle is placed on the upper side of the trailer main frame 1, and then the connecting seat 14 is connected to the traction main vehicle, so that the traction main vehicle drives the device through the traction rod 13, so that the traction main vehicle can drive the device to move forward. When the traction main vehicle brakes or decelerates, the trailer main frame 1 continues to move forward due to mechanical inertia. The two connecting brackets 12 and the telescopic sleeve column 15 can stabilize the trailer main frame 1 to avoid breakage. The forward inertia pushes the telescopic rod 17 to squeeze the telescopic spring 16 inward to buffer the device and avoid hitting the traction main vehicle. During the moving process, the device vibrates. When the trailer bumps, the wheel 4 moves up and down, pushing the swing arm 3 to rotate. The swing arm 3 rotates to push the oil cylinder 5 to extend and retract. The oil cylinder 5 then pushes the crank arm 8. Through the lever principle, the lower end of the crank arm 8 pushes the airbag shock absorber 7, so that the telescopic end of the oil cylinder 5 offsets the impact of the vibration with the help of the airbag shock absorber 7 and the reverse thrust of the oil cylinder 5 itself, stabilizes the trailer, and has a good shock absorption effect.

[0025] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be implemented in other specific forms without departing from the spirit or basic features of the utility model; therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description. Therefore, it is intended to include all changes within the meaning and scope of the equivalent elements of the claims in the utility model, and any figure marks in the claims should not be regarded as limiting the claims involved.

[0026] 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. An independent suspension trailer with airbag shock absorption, comprising a trailer main frame (1), Features: A through shaft (2) is symmetrically inserted at the lower side of the trailer main frame (1); the front and rear ends of the through shaft (2) are rotatably connected to swing arms (3); the opposite sides of the front and rear swing arms (3) are rotatably connected to wheels (4); the opposite sides of the front and rear swing arms (3) are movably hinged with oil cylinders (5); the front and rear sides of the trailer main frame (1) are symmetrically connected to shock absorber seats (6); the shock absorber seats (6) are located on the opposite sides of the swing arms (3); An airbag shock absorber (7) is movably mounted on the inner side of the seat (6); one end of the airbag shock absorber (7) close to the swing arm (3) is movably hinged to the inner side wall of the shock absorber seat (6); a crank arm (8) is movably hinged to the inner side wall of the shock absorber seat (6) away from the swing arm (3); one end of the airbag shock absorber (7) away from the swing arm (3) is movably hinged to the lower end of the crank arm (8); and the fixed end of the oil cylinder (5) is movably hinged to the upper end of the crank arm (8).

2. An independent suspension trailer with airbag shock absorption according to claim 1, Features: A fender (9) is fixedly connected to the upper side of the swing arm (3), and the fender (9) is located on the upper side of the wheel (4).

3. An independent suspension trailer with airbag shock absorption according to claim 1, Features: The opposite sides of the front and rear swing arms (3) are both movably hinged with fixed locks (10), and the fixed locks (10) are clamped with the telescopic ends of the oil cylinders (5).

4. An independent suspension trailer with airbag shock absorption according to claim 1, Features: The right side of the trailer main frame (1) is movably hinged with a baffle (11), and the left side of the trailer main frame (1) is symmetrically connected to a connecting support frame (12) in the front and rear directions.

5. An independent suspension trailer with airbag shock absorption according to claim 4, Features: The left side of the trailer main frame (1) is fixedly connected to a traction rod (13), the left side of the traction rod (13) is fixedly connected to a connecting seat (14), and the opposite ends of the front and rear connecting brackets (12) are fixedly connected to the front and rear sides of the traction rod (13).

6. An independent suspension trailer with airbag shock absorption according to claim 4, Features: A telescopic sleeve column (15) is symmetrically connected to the left side of the trailer main frame (1) in front and back directions, a telescopic spring (16) is fixedly connected to the right side wall inside the telescopic sleeve column (15), a telescopic rod (17) is fixedly connected to the left end of the telescopic spring (16), the telescopic rod (17) is movably sleeved with the telescopic sleeve column (15), and the telescopic sleeve column (15) is located on the upper side of the connecting support frame (12).

Images