Tractor load sensitive multi-way valve
A load-sensing, multi-way valve technology, applied in the direction of mechanical equipment, fluid pressure actuators, servo motor components, etc., can solve the problem that the hydraulic system cannot achieve multi-working conditions
Pending Publication Date: 2017-11-10
LOVOL HEAVY IND CO LTD
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a tractor load-sensitive multi-way valve to solve the problem that the hydraulic system cannot realize the application of multiple working conditions
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[0015] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.
[0016] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "center", "inner", "outer", "top", "bottom" etc. are based on the attached The orientation or positional relationship shown in the figure is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a reference to this invention. Invention Limitations.
[0017] In the description of the present invention, it should be noted that ...
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The invention relates to the field of agricultural machines, in particular to a tractor load sensitive multi-way valve. The tractor load sensitive multi-way valve comprises a first reversing valve and a second reversing valve, wherein the first reversing valve and the second reversing valve are arranged on an oil supply circuit in parallel, a differential pressure compensating valve is arranged between the second reversing valve and a pressure oil port, and the differential pressure compensating valve is in oil circuit connection with the second reversing valve and the pressure oil port separately. During work, when the driving requirement is not high, the second reversing valve is shut off, the first reversing valve works, hydraulic oil is fed to a working device through the first reversing valve in order to realize mechanical operation that requires a low level of drive; when the driving requirement is high, the first reversing valve is shut off, the second reversing valve works, the hydraulic oil is fed to the working device through the second reversing valve, because the differential pressure compensating valve is arranged between the second reversing valve and the pressure oil port and can effectively stabilize the outlet flow of the second reversing valve, the control requirement for stabilizing the output flow is met, and application of the mechanical operation that requires a high level of drive is realized.
Description
technical field [0001] The invention relates to the field of agricultural machinery, in particular to a tractor load-sensitive multi-way valve. Background technique [0002] At present, agricultural machinery generally only contains a set of reversing valves for the actuators. When working, the hydraulic pump supplies oil to the hydraulic system. The hydraulic oil is switched through the spool position of the reversing valve to realize the switching of the actuator action. It can drive mechanical actions with low requirements, but it cannot be used to drive mechanical actions with high requirements. The range of use is relatively small, and the hydraulic system cannot be used in multiple working conditions. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a tractor load-sensitive multi-way valve to solve the problem that the hydraulic system cannot be applied in multiple working conditions. [0004] The technical...
Claims
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Login to View More IPC IPC(8): F15B13/02
CPCF15B13/02
Inventor 姜维张继伟邵年张心雨赵兰欣张继东
Owner LOVOL HEAVY IND CO LTD