Small full hydraulic all wheel drive sweeper walking hydraulic system
A technology of all-wheel drive and hydraulic system, which is applied in the field of sanitation, can solve the problems of high manufacturing cost, inability to completely solve the problem of differential speed, poor passability, etc., and achieve the effect of solving differential speed
Active Publication Date: 2016-08-17
YANGZHOU JINWEI ENVIRONMENTAL PROTECTION TECH CO LTD
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Problems solved by technology
[0002] During the walking process of the sweeper, it needs to constantly face turning, uneven road surface, climbing and other working conditions, which will inevitably cause differential speed. In order to overcome the differential speed problem, various mechanical differentials have been introduced on the market, which certainly play a role. Good effect, but more expensive to manufacture
In order to overcome the cost problem, various hydraulic systems have been developed on the market to solve the differential speed problem, but the actual use effect is not ideal, it cannot adapt to various road conditions, cannot completely solve the differential speed problem, and the passability is not good
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[0014] Such as Figure 1-2 As shown, the walking hydraulic system of a small full-hydraulic all-wheel-drive sweeper includes an engine 1, a variable pump assembly 2 controlled by the engine 1, a left front hydraulic motor 13, a right front hydraulic motor 14, a left rear hydraulic motor 15, and a right rear hydraulic motor. Hydraulic motor 16, left front hydraulic motor 13, right front hydraulic motor 14, left rear hydraulic motor 15, right rear hydraulic motor 16 are arranged in parallel.
[0015] The system also includes a first logic valve 6 , a second logic valve 7 , a third logic valve 8 , and a fourth logic valve for respectively controlling the left front hydraulic motor 13 , the right front hydraulic motor 14 , the left rear hydraulic motor 15 , and the right rear hydraulic motor 16 . 9. Port b of the first logic valve 6, the second logic valve 7, the third logic valve 8, and the fourth logic valve 9 are respectively connected with the left front hydraulic motor 13, th...
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The invention discloses a walking hydraulic system for a small all-hydraulic all-wheel drive road sweeper in the technical field of environmental sanitation. Each hydraulic motor is connected in parallel, and each hydraulic motor is provided with a logical valve; when a vehicle runs normally, an oil port B of a variable pump assembly is an oil return port, an oil port A of the variable pump assembly is an oil outlet, and the oil port B and the oil port A can form a hydraulic loop together with each hydraulic motor and logical valve; when the vehicle is in a reverse state, the oil port B of the variable pump assembly is the oil outlet, the oil port A of the variable pump assembly is the oil return port, and the oil port B and the oil port A can form a hydraulic loop together with each hydraulic motor and logical valve; when the vehicle is in a differential state, a coil S3 of a differential lock electromagnetic valve is electrified, so that a flow distributing and collecting valve I is connected to the left front hydraulic motor and the right front hydraulic motor, a flow distributing and collecting valve II is connected to the left back hydraulic motor and the right back hydraulic motor, the logical valve is in an obstructed state, and by utilizing the characteristic of flow equalization of the flow distributing and collecting valves, the differential problem is completely solved.
Description
technical field [0001] The invention relates to the field of environmental sanitation technology, in particular to a small sweeping vehicle. Background technique [0002] During the walking process of the sweeper, it needs to constantly face turning, uneven road, climbing and other working conditions, which will inevitably cause differential speed. In order to overcome the differential speed problem, various mechanical differentials have been introduced on the market, which certainly play a role. Good effect, but more expensive to manufacture. In order to overcome the cost problem, various hydraulic systems have been developed on the market to solve the differential speed problem, but the actual use effect is not ideal, it cannot adapt to various road conditions, cannot completely solve the differential speed problem, and the passability is not good. Contents of the invention [0003] The purpose of the present invention is to provide a walking hydraulic system for a smal...
Claims
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IPC IPC(8): F15B11/04F15B11/16
CPCF15B11/04F15B11/16F15B2211/20546
Inventor 陈彪
Owner YANGZHOU JINWEI ENVIRONMENTAL PROTECTION TECH CO LTD