A cylinder control valve
A technology for controlling valves and oil cylinders, applied in agricultural machinery and tools, servo motor components, applications, etc., can solve problems such as high cost, complex structure, and poor reliability, and achieve low cost, high degree of automation, and fewer parts.
Active Publication Date: 2019-12-24
江苏南京国家农业高新技术产业示范区发展集团有限公司
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- Application Information
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Problems solved by technology
However, the structure is very complicated, the reliability is poor, and the cost of two control rotary valves is still high
Method used
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[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0019] Such as Figure 1~3 Shown is a preferred embodiment of the present invention.
[0020] A cylinder control valve, comprising:
[0021] Valve sleeve 1, valve sleeve 1 is provided with oil inlet P, oil return port T, first working oil port A and second working oil port B, valve sleeve 1 is provided with a stepped first channel L1, the first There are annular first flow groove 101, second flow groove 102, third flow groove 103 and fourth flow groove 104 on the channel L1, the first flow groove 101 communicates with the second working oil port B, The second flow groove 102 is connected with the oil inlet P, the third flow groove 103 is connected with the first working oil port A, and the fourth flow groove 104 is connected with the oil return port T;
[0022] The reversing spool 2 is located on the left large diameter part of the first ch...
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The invention relates to an oil cylinder control valve. The oil cylinder control valve is characterized by comprising a valve sleeve, a reversing valve core, a hydraulic-control check valve, a first spring and an overflow valve; an oil inlet, an oil return opening, a first working oil opening and a second working oil opening are formed in the valve sleeve; a first channel is formed in the valve sleeve; the reversing valve core is located at the large-diameter part of the first channel; the hydraulic-control check valve is located at the small-diameter part of the first channel; a primary control cavity and a secondary control cavity are formed in the left side and the right side of the reversing valve core respectively; the first spring is located in the secondary control cavity to enablethe reversing valve core to keep the leftwards-moving trend; the hydraulic-control check valve is located at the small-diameter part of the first channel so as to control connection and disconnectionof the secondary control cavity and the oil return opening; and the overflow valve is arranged on a second channel and is used for normally closing a control opening of the hydraulic-control check valve and the second working oil opening. The oil cylinder control valve is compact in structure, low in machining cost and capable of automatically completing automatic control on turning of a turnoverplow.
Description
technical field [0001] The invention belongs to the technical field of valves, in particular to an oil cylinder control valve. Background technique [0002] In recent years, most areas of my country have begun to promote the application of hydraulic turning plows. Using the reversing plow for plowing has the advantages of no opening and closing ridges, high production efficiency, and energy saving. The hydraulic reversing plow uses the hydraulic system of the tractor to control the left and right plow bodies to operate alternately, so as to achieve the purpose of no opening and closing ridges. Such as Figure 6 As shown, the turning mechanism of the hydraulic turning plow mainly includes a suspension frame 111, a rotating shaft 115, a plow beam 112 and an oil cylinder 113. The rotating shaft 115 is welded on the suspension frame 111, and the plow beam 112 is installed on the rotating shaft 115. Respectively hinged on the suspension frame top and the plow beam 112 with pin ...
Claims
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IPC IPC(8): F15B13/042F15B13/02A01B3/40
CPCA01B3/40F15B13/027F15B13/042F15B2013/002
Inventor 邵立坤
Owner 江苏南京国家农业高新技术产业示范区发展集团有限公司