Closed-type travelling hydraulic system for small-sized four-wheel hydraulic drive multifunction outdoor operating vehicle
A hydraulic system and outdoor operation technology, applied in the field of sanitation vehicles, can solve the problems of high manufacturing cost, differential speed, unsatisfactory effect, etc., and achieve the effect of simple structure principle
Active Publication Date: 2017-06-13
EGUARD NEW ENERGY AUTOMOBILE CO LTD
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Problems solved by technology
[0002] During the walking process of the small multi-functional outdoor work vehicle, it needs to constantly face turning, uneven road, ice and snow road, slippery grass, climbing and other working conditions, which will inevitably cause differential speed and slippage. In order to overcome these problems, the market launched Various mechanical differentials have played a very good effect, but the manufacturing cost is high
In order to overcome the problem, various hydraulic systems have been developed on the market to solve the problem of differential speed and slippage, but the actual effect is not ideal, or the system is relatively complicated
Method used
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Embodiment Construction
[0015] The present invention will be further described below in conjunction with accompanying drawing:
[0016] See attached figure 1 , a small four-wheel hydraulically driven multifunctional outdoor work vehicle walking closed hydraulic system includes: fuel tank 1, variable pump assembly 2, flushing valve 3, left front hydraulic motor 4, right front hydraulic motor 5, oil replenishment overflow valve 6, Left rear hydraulic motor 7, right rear hydraulic motor 8, engine 9.
[0017] The left front hydraulic motor 4 is connected in series with the left rear hydraulic motor 7, the right front hydraulic motor 5 is connected in series with the right rear hydraulic motor 8, and the hydraulic motors on the left and right sides are connected in parallel; the ports A and B of the flushing valve 3 are connected to The A and B ports of the variable pump assembly 2 are connected correspondingly; the R port of the above-mentioned left front hydraulic motor 4 is connected with the A2 port ...
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The invention particularly relates to a closed-type travelling hydraulic system for a small-sized four-wheel hydraulic drive multifunction outdoor operating vehicle. The system is a closed-type hydraulic system and comprises a hydraulic oil tank, a variable pump, a flush valve, hydraulic motors and an oil replenishing overflow valve. The front and back hydraulic motors are connected in series, and the oil replenishing overflow valve is connected into the middle in series. When the vehicle moves forwards, a port A of a variable pump assembly serves as an oil outlet, a port B of the variable pump assembly serves as an oil return opening, and the variable pump assembly, all the hydraulic motors and a valve block form a hydraulic circuit. When the vehicle is in a backing state, the port B of the variable pump assembly serves as the oil outlet, the port A of the variable pump assembly serves as the oil return opening, and the variable pump assembly, all the hydraulic motors and the valve block form the hydraulic circuit. When the vehicle turns a corner or executes other differential travelling, the oil replenishing overflow valve carries out the corresponding overflow and oil replenishing work, and the front and back hydraulic motors are connected in series so that the slipping problem of any wheel can be solved.
Description
technical field [0001] The invention relates to the technical field of sanitation vehicles, in particular to a small four-wheel hydraulically driven multifunctional outdoor work vehicle. Background technique [0002] During the walking process of the small multi-functional outdoor work vehicle, it needs to constantly face turning, uneven road, ice and snow road, slippery grass, climbing and other working conditions, which will inevitably cause differential speed and slippage. In order to overcome these problems, the market launched Various mechanical differentials have played a very good effect, but the manufacturing cost is high. In order to overcome the problem, various hydraulic systems have been developed on the market to solve the problems of differential speed and slippage, but the actual effect is not ideal, or the system is relatively complicated. Contents of the invention [0003] The invention provides a hydraulic traveling system of a small four-wheel hydraulic...
Claims
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IPC IPC(8): F15B11/16
CPCF15B11/16
Inventor 王超杰
Owner EGUARD NEW ENERGY AUTOMOBILE CO LTD