Electric bulk cargo trailer

Abstract

The utility model belongs to the technical field of tractors, and relates to an electric bulk cargo trailer which comprises a trailer body composed of a fence and a bottom plate, a traction device connected with the tractor is arranged at the front end of the trailer body, and front wheels and rear wheels for traction driving are arranged at the bottom of the trailer body. A drive axle, a storage battery, a controller and a drive motor are arranged at the bottom of the trailer body, the drive motor is in transmission connection with a speed reducer in the middle of the drive axle, the rear wheels are connected to two half shafts of the drive axle respectively, and the output end of the storage battery is electrically connected with the drive motor and provides electric energy. The controller is electrically connected with the driving motor and controls operation of the driving motor, a control switch electrically connected with the controller is arranged on the traction device, and the control switch controls the trailer to run front and back through the controller and the driving motor. The electric bulk cargo trailer provided by the utility model can be used for hooking operation more conveniently.

Description

Technical Field

[0001] The utility model belongs to the technical field of tractors and relates to an electric bulk cargo trailer. Background Art

[0002] Unpowered bulk cargo trailers are commonly used in airports, railways and other transportation departments to carry goods. The device is mounted on the rear end of the tractor and is used to transport luggage and goods. Conventional unpowered bulk cargo trailers require multiple people to cooperate in pushing the trailer to perform the hooking operation when the trailer is hooked to the trailer or the trailer is hooked to the tractor when the vehicle is in a loaded state. Utility Model Content

[0003] The utility model aims at the deficiencies of the prior art and provides an electric bulk cargo trailer which can perform hooking operations more conveniently.

[0004] In order to solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0005] An electric bulk cargo trailer comprises a trailer body consisting of a fence and a bottom plate, a traction device connected to a tractor is arranged at the front end of the trailer body, front wheels and rear wheels for traction are arranged at the bottom, a drive axle, a battery, a controller and a drive motor are arranged at the bottom of the trailer body, the drive motor is transmission-connected to a reducer in the middle of the drive axle, the rear wheels are respectively connected to two half-axles of the drive axle, the output end of the battery is electrically connected to the drive motor and provides electric energy, the controller is electrically connected to the drive motor and controls its operation, a control switch electrically connected to the controller is arranged on the traction device, and the control switch controls the trailer to travel forward and backward through the controller and the drive motor.

[0006] In the above-mentioned electric bulk cargo trailer, the control switch is fixed to the traction device by means of a fastener or a mounting bracket. Preferably, the control switch is fixed to the side of the front end of the traction device.

[0007] In the above-mentioned electric bulk cargo trailer, battery brackets are fixedly arranged on two adjacent cross beams of the trailer body, mounting ears are arranged on both sides of the battery, and the mounting ears are fixedly connected to the battery bracket by fasteners; the controller is fixed to the battery through the controller bracket.

[0008] In the above-mentioned electric bulk cargo trailer, the drive motor is equipped with a kinetic energy recovery system. In the kinetic energy recovery mode, the tractor tows the trailer body, and the drive motor generates reverse torque to reversely charge the battery.

[0009] In the above-mentioned electric bulk cargo trailer, the driving motor is a three-phase asynchronous motor.

[0010] In the above-mentioned electric bulk cargo trailer, the front wheels of the trailer are connected to the trailer body through a steering mechanism.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] 1. The utility model provides an electric bulk cargo trailer, which adds a battery, a drive motor and a drive axle to the original unpowered trailer, and controls the drive motor to move the trailer forward and backward through a control switch. By moving the trailer forward and backward slowly, it is no longer necessary to push the trailer manually when hooking, eliminating the need for multiple people to perform the hooking operation, which is more convenient and quick.

[0013] 2. The utility model further provides a kinetic energy recovery function. When the trailer is towed, the battery is reversely charged through the kinetic energy recovery mode. With the above function, the trailer no longer needs to be actively charged, and can be free from the need to pay attention to and maintain the power during daily use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a side view of the utility model;

[0015] Figure 2 It is a top view of the utility model;

[0016] Figure numerals: 1. trailer body; 2. traction device; 3. front wheel; 4. rear wheel; 5. drive axle; 6. battery; 7. controller; 8. drive motor; 9. control switch; 14. crossbeam; 15. battery bracket; 16. mounting ear; 17. controller bracket. DETAILED DESCRIPTION

[0017] The present invention will be further described below with reference to the accompanying drawings. Figure 1-2 :

[0018] An electric bulk cargo trailer comprises a trailer body 1 consisting of a fence and a bottom plate, a traction device 2 connected to a tractor is provided at the front end of the trailer body 1, and front wheels 3 and rear wheels 4 for traction are provided at the bottom, a drive axle 5, a battery 6, a controller 7 and a drive motor 8 are provided at the bottom of the trailer body 1, the drive motor 8 is transmission-connected to a reducer in the middle of the drive axle 5, the rear wheels 4 are respectively connected to two half shafts of the drive axle 5, the output end of the battery 6 is electrically connected to the drive motor 8 and provides electric energy, the controller 7 is electrically connected to the drive motor 8 and controls its operation, a control switch 9 electrically connected to the controller 7 is provided on the traction device 2, and the control switch 9 controls the trailer to travel forward and backward through the controller 7 and the drive motor 8.

[0019] When performing the hooking operation, according to the position of the tractor and the trailer or the trailer and the trailer, the drive motor 8 is started by the control switch 9 and the trailer is driven forward or backward slowly. When the drive motor 8 is turned off to the position where the hook can be accurately performed, the hooking operation is performed.

[0020] In order to facilitate operation and observe the position of the hook operation at the same time, the control switch 9 is fixed to the traction device 2 by a fastener or a mounting bracket. Preferably, the control switch 9 is fixed to the side of the front end of the traction device 2.

[0021] In this embodiment, the specific installation structure of the battery 6 and the controller 7 is: a battery bracket 15 is fixedly provided on two adjacent cross beams 14 of the trailer body 1, mounting ears 16 are provided on both sides of the battery 6, and the mounting ears 16 are fixedly connected to the battery bracket 15 by fasteners; the controller 7 is fixed to the battery 6 by the controller bracket 17.

[0022] In this embodiment, the drive motor 8 is equipped with a kinetic energy recovery system. In the kinetic energy recovery mode, the tractor tows the trailer body 1, and the drive motor 8 generates reverse torque to reversely charge the battery 6. In the kinetic energy recovery mode, when the tractor tows the trailer body 1 to move, the rear wheels 4 drive the reducer (gearbox) to drive the drive motor 8 to charge the battery 6. Through kinetic energy recovery, the battery 6 of this embodiment no longer needs to be actively charged. The kinetic energy recovery system in this embodiment adopts a system known in the art.

[0023] Preferably, the drive motor 8 is a three-phase asynchronous motor.

[0024] The front wheels 3 of the trailer are connected to the trailer body 1 through a steering mechanism, and are used for steering the trailer during towing and movement.

[0025] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric bulk cargo trailer, comprising a trailer body (1) consisting of a fence and a bottom plate, wherein a traction device (2) connected to a tractor is arranged at the front end of the trailer body (1), and a front wheel (3) and a rear wheel (4) for traction are arranged at the bottom, characterized in that: The bottom of the trailer body (1) is provided with a drive axle (5), a battery (6), a controller (7) and a drive motor (8); the drive motor (8) is drivingly connected to a reducer in the middle of the drive axle (5); the rear wheels (4) are respectively connected to two half shafts of the drive axle (5); the output end of the battery (6) is electrically connected to the drive motor (8) and provides electric energy; the controller (7) is electrically connected to the drive motor (8) and controls its operation; the traction device (2) is provided with a control switch (9) electrically connected to the controller (7); the control switch (9) controls the trailer to travel forward and backward through the controller (7) and the drive motor (8).

2. An electric bulk cargo trailer according to claim 1, characterized in that: A battery bracket (15) is fixedly arranged on two adjacent cross beams (14) of the trailer body (1); mounting ears (16) are arranged on both sides of the storage battery (6); the mounting ears (16) are fixedly connected to the battery bracket (15) via fasteners; and the controller (7) is fixed to the storage battery (6) via the controller bracket (17).

3. The electric bulk cargo trailer according to claim 1, characterized in that: The drive motor (8) is equipped with a kinetic energy recovery system. In the kinetic energy recovery mode, the tractor tows the trailer body (1), and the drive motor (8) generates reverse torque to reversely charge the storage battery (6).

4. The electric bulk cargo trailer according to claim 3, characterized in that: The driving motor (8) is a three-phase asynchronous motor.

Images