Novel trailer

Abstract

The utility model belongs to the technical field of trailers, and particularly relates to a novel trailer which comprises a trailer frame, a through shaft is fixedly connected to the lower side of the trailer frame in an inserted mode, swing arms are rotationally connected to the front end and the rear end of the through shaft respectively, wheels are rotationally connected to the opposite sides of the swing arms on the front side and the rear side respectively, and fender supports are fixedly connected to the upper sides of the swing arms. Damping seats are connected to the front side and the rear side of the trailer frame in a left-right mode, a crank arm is rotatably connected to the right side of the damping seat on the left side, a damper is movably hinged to the lower end of the crank arm, and the end, away from the crank arm, of the damper is movably hinged to the left side of the damping seat on the right side. The problems that an existing device is poor in damping effect, especially the position and the structure of a traction rod are weak, and the connecting position lacks buffering and is prone to breakage and damage are solved; the problems that an existing device is lack of a structure for buffering dragging force of left-right steering, and a connecting structure between a main vehicle and a trailer can be affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of trailers, in particular to a new type of trailer. Background Art

[0002] A trailer is a vehicle towed by a car without its own power drive device. It has a low deck height and a large load capacity. There is no risk of tire puncture or blowout. It is safe, simple and durable. It has no power and needs a tractor or forklift to tow it. Usually, a train of vehicles consisting of one or more flatbed trucks and a forklift or tractor is used to transport goods or carry large equipment, which greatly improves the efficiency of cargo transfer and reduces the cost of vehicles and manpower. The truck and tractor are the driving section of the car train, called the main vehicle; the driven section towed by the main vehicle is called the trailer. It is an important type of road transportation and the most effective and simple means to improve economic benefits.

[0003] The shock absorption effect of the existing device is weak, especially the position of the towing rod, the structure is relatively weak. When the main vehicle and the trailer produce large bumps, the connection lacks buffering and is easily broken and damaged. In addition, when the main vehicle turns, the existing device lacks a structure to buffer the pulling force of left and right turns, which will also affect the connection structure between the main vehicle and the trailer. Utility Model Content

[0004] The purpose of the utility model is to provide a new type of trailer to solve the problems that the existing device proposed in the above background technology has a weak shock absorption effect, especially the position of the towing rod, the structure is relatively weak, the connection lacks buffering, and is easy to break and damage; the existing device lacks a structure for buffering the pulling force of left and right steering, which will also affect the connection structure between the main vehicle and the trailer.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of trailer, including a trailer frame, a through shaft is fixedly inserted on the lower side of the trailer frame, the front and rear ends of the through shaft are rotatably connected to swing arms, the front and rear sides of the swing arms are rotatably connected to wheels, the upper side of the swing arm is fixedly connected to a fender support, the upper side of the fender support is fixedly connected to a fender, the front and rear sides of the trailer frame are connected to shock absorber seats on the left and right sides, the right side of the shock absorber seat on the left side is rotatably connected to a crank arm, the lower end of the crank arm is movably hinged with a shock absorber, and the One end of the shock absorber away from the crank arm is movably hinged to the left side of the right shock absorber seat, the upper end of the crank arm is movably hinged with a first oil cylinder, the telescopic end of the first oil cylinder is movably hinged to the upper side of the swing arm, the upper side of the swing arm is movably hinged with a first safety lock, the first safety lock is clamped with the telescopic end of the first oil cylinder, a tool box is fixedly connected to the upper left edge of the trailer frame, the upper left edge of the trailer frame is symmetrically connected to a front baffle, the two front baffles are located at the front and rear sides of the tool box, and a rear baffle is movably hinged to the right side of the trailer frame.

[0006] Preferably, the two fender supports are located on opposite sides of the wheel, and the fender is located above the wheel.

[0007] Preferably, the shock absorber seat is located on the left side of the swing arm, the front and rear sides of the trailer frame are fixedly connected with protective covers, the protective covers are located on the upper side of the shock absorber seat, and the crank arm, shock absorber and first cylinder are located on the inner side of the protective cover.

[0008] Preferably, a connecting piece is fixedly connected to the left side of the trailer frame, a traction rod is movably hinged to the left side of the connecting piece, a connector is fixedly connected to the left side of the traction rod, and a hook is rotatably connected to the lower side of the traction rod.

[0009] Preferably, a second oil cylinder is movably hinged on the upper side of the connecting member, a telescopic end of the second oil cylinder is movably hinged to the upper side of the traction rod, a second mounting sleeve lock is movably hinged on the upper side of the traction rod, and the second mounting sleeve lock is clamped with the telescopic end of the second oil cylinder.

[0010] Preferably, a fixed block is symmetrically connected to the left side of the trailer frame front and back, a first universal joint is installed on the left side of the fixed block, the left side of the first universal joint is rotatably connected to a hollow sleeve rod, the right side wall inside the hollow sleeve rod is fixedly connected to a buffer spring, the left side of the buffer spring is fixedly connected to a telescopic rod, the telescopic rod is plugged into the hollow sleeve rod, a second universal joint is installed on the left side of the telescopic rod, and the left side of the second universal joint is rotatably connected to a connecting plate.

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

[0012] 1) When the device is bumpy during travel, the wheels move up and down, pushing the swing arm to rotate, and the swing arm rotation pushes the first cylinder to extend and retract, and the first cylinder then pushes the crank arm. Through the principle of leverage, the lower end of the crank arm pushes the shock absorber, so that the telescopic end of the first cylinder offsets the impact of the vibration with the help of the shock absorber and the first cylinder's own reverse thrust, thereby stabilizing the trailer. When the tow bar part moves relatively between the main vehicle and the trailer, the connecting piece and the tow bar squeeze the telescopic end of the second cylinder, so that the second cylinder offsets the impact of the vibration through reverse thrust, thereby avoiding breakage at the connection position.

[0013] 2) When the main vehicle turns, the turning brings a pulling force, one end of the telescopic rod is pulled, and the other end squeezes the telescopic rod, so that the telescopic rod at one end stretches the buffer spring, and the telescopic rod at the other end squeezes the buffer spring. The setting of the first universal joint and the second universal joint allows the telescopic rod and the hollow sleeve rod to rotate to a certain extent when turning, which is convenient for their extension and retraction. Under the joint action of various components, the pulling force of the main vehicle on the connection part is offset to avoid affecting the connection structure. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 This is a schematic diagram of the structure of the utility model when viewed from above;

[0016] Figure 3 This is a schematic diagram of the main structure of the first oil cylinder;

[0017] Figure 4 It is a schematic diagram of the main structure of the traction rod.

[0018] In the figure: 1. trailer frame, 2. through axle, 3. swing arm, 4. wheel, 5. fender support, 6. fender, 7. shock absorber seat, 8. crank arm, 9. shock absorber, 10. first cylinder, 11. first safety sleeve lock, 12. tool box, 13. front baffle, 14. rear baffle, 15. protective cover, 16. connecting piece, 17. tow bar, 18. connector, 19. hook, 20. second cylinder, 21. second mounting sleeve lock, 22. fixing block, 23. first universal joint, 24. hollow sleeve rod, 25. buffer spring, 26. telescopic rod, 27. second universal joint, 28. connecting plate. 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: a new trailer includes a trailer frame 1, a through shaft 2 is fixedly inserted on the lower side of the trailer frame 1, the front and rear ends of the through shaft 2 are rotatably connected to the swing arms 3, and the opposite sides of the front and rear swing arms 3 are rotatably connected to the wheels 4. When the device is bumpy during travel, the wheels 4 move up and down, pushing the swing arms 3 to rotate, and the swing arms 3 rotate to push the first oil cylinder 10 to extend and retract, and the first oil cylinder 10 then pushes the crank arm 8, and the upper side of the swing arm 3 is fixedly connected to the mudguard support 5, and the upper side of the mudguard support 5 is fixedly connected to the mudguard 6 for blocking mud and sand, and the front and rear sides of the trailer frame 1 are connected to the left and right with shock absorber seats 7, and the right side of the left shock absorber seat 7 is rotatably connected to the crank arm 8, and the lower end of the crank arm 8 is movably hinged with a shock absorber 9, and the end of the shock absorber 9 away from the crank arm 8 is movably hinged to the left side of the right shock absorber seat 7, The upper end of the crank arm 8 is movably hinged with a first cylinder 10, and the telescopic end of the first cylinder 10 is movably hinged with the upper side of the swing arm 3. When vibrating, the lower end of the crank arm 8 pushes the shock absorber 9 through the lever principle, so that the telescopic end of the first cylinder 10 offsets the impact of the vibration with the help of the shock absorber 9 and the first cylinder 10's own back thrust, thereby stabilizing the trailer. The upper side of the swing arm 3 is movably hinged with a first safety lock 11, and the first safety lock 11 is engaged with the telescopic end of the first cylinder 10 to prevent the first cylinder 10 from being damaged and causing the device to lose balance, thereby avoiding danger. A tool box 12 is fixedly connected to the upper left edge of the trailer frame 1, and a front baffle 13 is symmetrically connected to the upper left edge of the trailer frame 1. The two front baffles 13 are located at the front and rear sides of the tool box 12 for protecting the tool box 12. A rear baffle 14 is movably hinged on the right side of the trailer frame 1.

[0023] Among them, two fender supports 5 are located on opposite sides of the wheel 4, the fender 6 is located above the wheel 4, the shock absorber seat 7 is located on the left side of the swing arm 3, the front and rear sides of the trailer frame 1 are fixedly connected with a protective cover 15, the protective cover 15 is located on the upper side of the shock absorber seat 7, the crank arm 8, the shock absorber 9 and the first cylinder 10 are located on the inner side of the protective cover 15, the left side of the trailer frame 1 is fixedly connected with a connecting piece 16, the left side of the connecting piece 16 is movably hinged with a traction rod 17, and the left side of the traction rod 17 is fixedly connected with a connector 18, the lower side of the traction rod 17 is rotatably connected with a hook 19, the upper side of the connecting piece 16 is movably hinged with a second oil cylinder 20, and the telescopic end of the second oil cylinder 20 is movably hinged with the upper side of the traction rod 17. When the main vehicle and the trailer move relative to each other, the connecting piece 16 and the traction rod 17 squeeze the telescopic end of the second oil cylinder 20, so that the second oil cylinder 20 offsets the impact of vibration through reverse thrust to avoid breaking of the connection position. The upper side of the traction rod 17 is movably hinged with a second mounting sleeve lock 21, and the second mounting sleeve lock 21 The second oil cylinder 20 is connected to the telescopic end to prevent the second oil cylinder 20 from being damaged and causing the device to lose balance, thereby avoiding danger. The left side of the trailer frame 1 is symmetrically connected with a fixed block 22. The left side of the fixed block 22 is installed with a first universal joint 23. The left side of the first universal joint 23 is rotatably connected with a hollow sleeve rod 24. The right side wall of the inner side of the hollow sleeve rod 24 is fixedly connected with a buffer spring 25. The left side of the buffer spring 25 is fixedly connected with a telescopic rod 26. The telescopic rod 26 is plugged into the hollow sleeve rod 24. The telescopic rod 2 6 is installed on the left side of the second universal joint 27. When the main vehicle turns, the turning brings a pulling force, one end pulls the telescopic rod 26, and the other end squeezes the telescopic rod 26, so that the telescopic rod 26 at one end stretches the buffer spring 25, and the telescopic rod 26 at the other end squeezes the buffer spring 25. The arrangement of the first universal joint 23 and the second universal joint 27 allows the telescopic rod 26 and the hollow sleeve rod 24 to rotate to a certain extent when turning, which is convenient for their extension and retraction. The left side of the second universal joint 27 is rotatably connected with a connecting plate 28, which is connected to the main vehicle.

[0024] Working principle: In this device, the shock absorber 9 is an existing structure and will not be described in detail. When the device is bumpy during travel, the wheel 4 moves up and down, pushing the swing arm 3 to rotate, and the swing arm 3 rotates to push the first oil cylinder 10 to extend and retract, and the first oil cylinder 10 then pushes the crank arm 8. Through the principle of leverage, the lower end of the crank arm 8 pushes the shock absorber 9, so that the telescopic end of the first oil cylinder 10 offsets the impact of the vibration with the help of the shock absorber 9 and the first oil cylinder 10's own reverse thrust, and stabilizes the trailer. When the traction rod 17 moves relative to the main vehicle and the trailer, the connecting piece 16 and the traction rod 17 squeeze the second oil cylinder 2 0, so that the second oil cylinder 20 can offset the influence of vibration by reverse thrust, so as to avoid the connection position from breaking. When the main vehicle turns, the turning brings pulling force, one end pulls the telescopic rod 26, and the other end squeezes the telescopic rod 26, so that the telescopic rod 26 at one end stretches the buffer spring 25, and the telescopic rod 26 at the other end squeezes the buffer spring 25. The arrangement of the first universal joint 23 and the second universal joint 27 allows the telescopic rod 26 and the hollow sleeve rod 24 to rotate to a certain extent when turning, so as to facilitate their extension and retraction. Under the joint action of various components, the pulling force of the main vehicle on the connection part is offset, so as to avoid affecting the connection structure.

[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. A novel trailer, comprising a trailer frame (1), characterized in that: A through shaft (2) is fixedly inserted at the lower side of the trailer frame (1), and the front and rear ends of the through shaft (2) are both rotatably connected to swing arms (3), and the opposite sides of the swing arms (3) at the front and rear sides are both rotatably connected to wheels (4), and the upper side of the swing arms (3) is fixedly connected to a fender support (5), and the upper side of the fender support (5) is fixedly connected to a fender (6), and the front and rear sides of the trailer frame (1) are connected to shock absorber seats (7) on the left and right sides, and the right side of the left shock absorber seat (7) is rotatably connected to a crank arm (8), and the lower end of the crank arm (8) is movably hinged with a shock absorber (9), and the end of the shock absorber (9) away from the crank arm (8) is connected to the right shock absorber seat (7). The left side is movably hinged, the upper end of the crank arm (8) is movably hinged with a first oil cylinder (10), the telescopic end of the first oil cylinder (10) is movably hinged with the upper side of the swing arm (3), the upper side of the swing arm (3) is movably hinged with a first safety lock (11), the first safety lock (11) is clamped with the telescopic end of the first oil cylinder (10), the upper left edge of the trailer frame (1) is fixedly connected with a tool box (12), the upper left edge of the trailer frame (1) is symmetrically connected with a front baffle (13), the two front baffles (13) are located at the front and rear sides of the tool box (12), and the right side of the trailer frame (1) is movably hinged with a rear baffle (14); The left side of the trailer frame (1) is fixedly connected to a connecting piece (16), the left side of the connecting piece (16) is movably hinged to a traction rod (17), the left side of the traction rod (17) is fixedly connected to a connector (18), the lower side of the traction rod (17) is rotatably connected to a hook (19), the upper side of the connecting piece (16) is movably hinged to a second oil cylinder (20), the telescopic end of the second oil cylinder (20) is movably hinged to the upper side of the traction rod (17), the upper side of the traction rod (17) is movably hinged to a second mounting sleeve lock (21), and the second mounting sleeve lock (21) is clamped to the telescopic end of the second oil cylinder (20).

2. A new type of trailer according to claim 1, characterized in that: The two fender supports (5) are located on opposite sides of the wheel (4), and the fender (6) is located above the wheel (4).

3. A new type of trailer according to claim 1, characterized in that: The shock absorber seat (7) is located on the left side of the swing arm (3); the front and rear sides of the trailer frame (1) are fixedly connected with protective covers (15); the protective covers (15) are located on the upper side of the shock absorber seat (7); and the crank arm (8), the shock absorber (9) and the first oil cylinder (10) are located on the inner side of the protective cover (15).

4. A new type of trailer according to claim 1, characterized in that: A fixing block (22) is symmetrically connected to the left side of the trailer frame (1) in front and back directions, a first universal joint (23) is installed on the left side of the fixing block (22), a hollow sleeve rod (24) is rotatably connected to the left side of the first universal joint (23), a buffer spring (25) is fixedly connected to the right side wall inside the hollow sleeve rod (24), a telescopic rod (26) is fixedly connected to the left side of the buffer spring (25), the telescopic rod (26) is plugged into the hollow sleeve rod (24), a second universal joint (27) is installed on the left side of the telescopic rod (26), and a connecting plate (28) is rotatably connected to the left side of the second universal joint (27).

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