Static pressure driving compact cross-country forklift

Abstract

The utility model discloses a static pressure driving compact type cross-country forklift which comprises a forklift body, a driving system is arranged on the forklift body and comprises an engine and a hydraulic variable pump, the output end of the engine is connected with the hydraulic variable pump, and the output end of the engine is connected with the hydraulic variable pump. The output end of the hydraulic variable pump is connected with a front axle hydraulic variable motor and a rear axle driving motor; wherein the front axle hydraulic variable displacement motor is connected with a speed reducer, the speed reducer is connected with a front tire, and the rear axle driving motor is connected with a rear tire; a hydraulic variable pump of the hydraulic system is connected with a front axle hydraulic variable motor, a hydraulic motor static pressure driving system and rear axle steering driving are achieved, a control system of the forklift is simplified, the cost of the driving system is low, innovative design is conducted on the structure, a speed reducer shell is connected with a forklift frame, a rotor is connected with tires, the structure is simple, and operation is convenient. And for users, the reliability and the economical efficiency are higher.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial vehicles, in particular to a hydrostatically driven compact off-road forklift. Background Art

[0002] At present, compact off-road forklifts are generally driven by engines, torque converters, gearboxes, final reducers, drive axles, etc. This traditional drive method has a complex structure, high costs for drive systems, drive axles, etc., complex manufacturing processes, and inconvenient maintenance. In addition, the appearance is relatively large and the height is relatively high. Utility Model Content

[0003] In view of the above-mentioned defects or shortcomings, the purpose of the present utility model is to provide a hydrostatically driven compact off-road forklift.

[0004] In order to achieve the above purpose, the technical solution of the utility model is:

[0005] A hydrostatically driven compact off-road forklift comprises: a vehicle body, a driving system is arranged on the vehicle body, the driving system comprises: an engine and a hydraulic variable pump, the output end of the engine is connected to the hydraulic variable pump, the output end of the hydraulic variable pump is connected to a front axle hydraulic variable motor and a rear axle drive motor; wherein the front axle hydraulic variable motor is connected to a reducer, the reducer is connected to the front tire, and the rear axle drive motor is connected to the rear tire; the hydraulic system hydraulic variable pump and the front axle hydraulic variable motor are connected.

[0006] A reducer is installed on the front tires on both sides, and each reducer is connected to a front axle hydraulic variable motor, and the front axle hydraulic variable motors on both sides are connected to a hydraulic variable pump.

[0007] Rear axle drive motors are respectively installed on the rear tires on both sides, and the rear axle drive motors are connected to the hydraulic variable pump.

[0008] A working device is arranged at the front end of the vehicle body, and the working device comprises a liftable forklift frame.

[0009] A control system is installed on the vehicle body, and the control system is connected to the drive system.

[0010] The vehicle body is also provided with a hydraulic system for providing hydraulic control, wherein the hydraulic system is connected to the hydraulic variable pump.

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

[0012] The utility model provides a hydrostatically driven compact off-road forklift, which realizes a hydraulic motor hydrostatic drive system and a rear axle steering drive. The forklift's operating system is simplified, the drive system cost is low, and it is easy to mass produce and sell. An innovative design is made in the structure, in which a reducer housing is connected to a frame, and a rotor is connected to a tire. The structure is simple and the processability is good. The forklift removes a torque converter, a gearbox, and a drive axle, and is more reliable and economical for users. Through the above innovative design, the use requirements of the hydrostatically driven compact off-road forklift under various working conditions are fully met. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of the utility model static pressure driven compact off-road forklift Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the structure of the utility model static pressure driven compact off-road forklift Figure 2 ;

[0015] Figure 3 The utility model is a schematic diagram of the chassis structure of a hydrostatically driven compact off-road forklift.

[0016] In the figure, 1 is the vehicle body; 2 is the driving system; 3 is the working device; 4 is the hydraulic system; 5 is the operating system; 6 is the engine; 7 is the hydraulic variable pump; 8 is the hydraulic variable motor; 9 is the speed reducer; 10 is the rear axle driving motor; 11 is the front tire; 12 is the rear tire. DETAILED DESCRIPTION

[0017] The utility model will be described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0018] like Figure 1-3 As shown, the utility model provides a hydrostatically driven compact off-road forklift, including a vehicle body 1, wherein a drive system 2 is arranged on the vehicle body 1, wherein the drive system 2 comprises: an engine 6 and a hydraulic variable pump 7, wherein the output end of the engine 6 is connected to the hydraulic variable pump 7, wherein the output end of the hydraulic variable pump 7 is connected to a front axle hydraulic variable motor 8 and a rear axle drive motor 10, wherein the front axle hydraulic variable motor 8 is connected to a reducer 9, wherein the reducer 9 is connected to a front tire 11, and the rear axle drive motor 10 is connected to a rear tire 12.

[0019] like Figure 2As shown, the reducer 9 is connected to the front tires, and the rear axle drive motor 10 is connected to the rear tires. Specifically, the reducers 9 are installed on the front tires 11 on both sides, and each reducer 9 is connected to the front axle hydraulic variable motor 8, and the front axle hydraulic variable motors 8 on both sides are connected to the hydraulic variable pump 7. The rear axle drive motors 10 are installed on the rear tires 12 on both sides, and the rear axle drive motors 10 are connected to the hydraulic variable pump 7.

[0020] A working device 3 is provided at the front end of the vehicle body 1, and the working device 3 includes a liftable forklift frame. A control system 5 is installed on the forklift body. The control system 5 is connected to the drive system 2. A hydraulic system 4 for providing hydraulic control is also provided on the vehicle body 1, and the hydraulic system 4 is connected to the hydraulic variable pump 7.

[0021] The utility model compact off-road forklift is assembled from a body 1, a drive system 2, a working device 3, a hydraulic system 4, and a control system 5. The drive system 2 is composed of an engine 6, a hydraulic variable pump 7, a wheel-side drive hydraulic variable motor 8, a reducer 9, and a rear axle drive motor 10. The drive system 2 drives the wheel-side hydraulic variable motor 8 and the reducer 9 to rotate, thereby completing the transmission of driving power. The torque converter, gearbox, reducer, drive axle and other components of the ordinary hydraulic compact off-road forklift are removed to realize the drive and control of the forklift, with a simpler structure, lower cost, and more convenient use and maintenance.

[0022] The hydraulic variable pump 7 of the compact off-road forklift adopts DA control to transmit power to the hydraulic drive motor 8, and the forklift's reversing, speed change and other actions are controlled by the control; the lifting and lowering, front and rear tilting and other actions of the working device are controlled by the multi-way valve. The compact off-road forklift driven by static pressure of the utility model can completely replace the compact off-road forklift driven by hydraulic force, and has a small appearance and good flexibility; the overall height is low and more compact; the traction force is greater and the off-road performance is better. Therefore, the compactness and off-road performance advantages of the whole vehicle are obvious.

[0023] It is obvious to those skilled in the art that the above-mentioned specific examples are only preferred schemes of the present invention. Therefore, the improvements and changes that may be made by those skilled in the art to certain parts of the present invention still reflect the principles of the present invention and achieve the purpose of the present invention, and all belong to the scope of protection of the present invention.

Claims

1. A hydrostatically driven compact off-road forklift, characterized in that: include: A vehicle body (1) is provided with a drive system (2), the drive system (2) comprising: an engine (6) and a hydraulic variable pump (7), the output end of the engine (6) being connected to the hydraulic variable pump (7), the output end of the hydraulic variable pump (7) being connected to a front axle hydraulic variable motor (8) and a rear axle drive motor (10); wherein the front axle hydraulic variable motor (8) is connected to a reducer (9), the reducer (9) is connected to a front tire (11), and the rear axle drive motor (10) is connected to a rear tire (12).

2. The hydrostatically driven compact off-road forklift according to claim 1, characterized in that: A reducer (9) is installed on the front tires (11) on both sides, and each reducer (9) is connected to a front axle hydraulic variable motor (8), and the front axle hydraulic variable motors (8) on both sides are connected to a hydraulic variable pump (7).

3. The hydrostatically driven compact off-road forklift according to claim 1 or 2, characterized in that: Rear axle drive motors (10) are respectively installed on the rear tires (12) on both sides, and the rear axle drive motors (10) are connected to the hydraulic variable pump (7).

4. The hydrostatically driven compact off-road forklift according to claim 1, characterized in that: A working device (3) is provided at the front end of the vehicle body (1), and the working device (3) comprises a liftable forklift frame.

5. The hydrostatically driven compact off-road forklift according to claim 1, characterized in that: The vehicle body (1) is provided with a control system (5), and the control system (5) is connected to the drive system (2).

6. The hydrostatically driven compact off-road forklift according to claim 1, characterized in that: The vehicle body (1) is also provided with a hydraulic system (4) for providing hydraulic control, and the hydraulic system (4) is connected to the hydraulic variable pump (7).

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