A control valve device
A technology for controlling valves and spools, applied in fluid pressure actuating devices, servo motor assemblies, mechanical equipment, etc., can solve the problems of increased labor intensity, complex structure and high cost
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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Problems solved by technology
The manual control type is that the tractor driver directly manipulates the manual slide valve to control the oil circuit of the lifting cylinder to lift the two-way plow first, and then manipulates the manual slide valve to change direction to control the flip cylinder to start flipping, and the plow moves the fork in the middle position to drive a The rotary valve converts the oil circuit of the oil cylinder to complete the turning and turning, and then manually manipulates the slide valve to control the extension of the lifting cylinder. When the turning control valve is turning, the tractor driver also controls the steering wheel and lifting the plow. The overturn control valve is very tense and busy to complete these actions in a short time, and the labor intensity increases; at the same time, three control slide valves (one slide valve for lifting cylinder control, one slide valve for overturn control) are required. 2 spool valves) not only complex structure, but also high cost
Method used
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[0025]Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.
[0026] A control valve device according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.
[0027] like Figure 1 to Figure 8 As shown, a control valve device according to an embodiment of the present invention includes: a valve body 1, a first relief valve 7, a second relief valve 9, a first valve core 3a, a second valve core 3b, a first left end Cover 6a1, first right end cover 6b1, second left end cover 6a2, second right end cover 6b2, first spring 5a, seco...
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The invention provides a control valve device. The control valve device comprises a valve body, a first overflow valve, a second overflow valve, a first valve element, a second valve element, a firstleft end cover, a first right end cover, a second left end cover, a second right end cover, a first spring, a second spring and a third spring. According to the control valve device, the structure issimple, the manufacturing cost is low, and automatic control of a double-cylinder turnover plow can be achieved.
Description
technical field [0001] The invention relates to a valve, in particular to a control valve device. 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. At present, the control mode of single oil cylinder is generally adopted for small turning plows, while the control mode of double oil cylinders is adopted for large turning plows. The hydraulic tilting plow controlled by double cylinders mainly includes a lifting cylinder and a turning cylinder. The two cylinders are controlled by the hydraulic system of the tractor. When the plow is in working condition, both ...
Claims
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IPC IPC(8): F15B13/02
CPCF15B13/02
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