Triple pilot valve
A technology of pilot valves and valve bodies, applied in fluid pressure actuators, servo motor components, mechanical equipment, etc., can solve the problems of complex wiring, poor accuracy, and high cost, and achieve high standardization, accurate and stable travel, and low manufacturing costs. low effect
Inactive Publication Date: 2016-12-14
GUIZHOU FENGYANG HYDRAULIC
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Problems solved by technology
However, the disadvantages of this patent are also obvious: 1. The electromagnet is introduced into the pilot valve, the wiring itself is relatively complicated, and the failure rate of the electromagnet is high; 2. The service life of the universal joint is limited, and it is easy to fail after long-term use, resulting in product failure; 3. Contains single-handle pilot valve and slice pilot valve at the same time, the production standardization is low and the cost is high; 4. The control stroke depends on the hand feel and the accuracy is poor
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Embodiment Construction
[0017] The triple pilot valve structure of the present invention is as follows figure 1 , figure 2 As shown, it mainly includes a valve cover 15, a valve body 14 installed on it, a connecting plate 10 installed on the valve body 14, a dust cover, and three groups of operating mechanisms installed on the connecting plate 10 and installed on the valve Six proportional pressure reducing valves on body 14. Each group of operating mechanisms consists of a connecting rod 1 connected to an external operating handle, a shaft 2 installed at its lower end, a pressure plate 3 sleeved on the shaft 2, and a slider 5 that is resisted by a spring 6, which will be installed in its hemispherical groove. Steel ball 4 is pressed in the triangular groove of pressure plate 3, and screw plug 7, screw sleeve 8, nut 9 form the combination of a detachable band lumen, and its lumen is as the mounting position of slide block 5, spring 6. The function of each control mechanism is to realize the contro...
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The invention discloses a triple pilot valve. The triple pilot valve comprises a valve body, a bonnet, a connecting plate, three control mechanisms and six proportional pressure reducing valves, wherein each two proportional pressure reducing valves are controlled by the corresponding control mechanism; each control mechanism comprises a connecting rod, a shaft, a pressure plate, a plug screw, a sliding block, a spring, a steel ball, a screw barrel and a nut; a plurality of triangular grooves are formed in one side of each pressure plate; each sliding block is provided with a semispherical groove; each steel ball is arranged between the corresponding sliding block and the corresponding pressure plate; each proportional pressure reducing valve comprises a slide bar, a control valve element, a gasket, a spring seat, a pressure adjusting spring and a return spring; a first oil groove is formed in the lower end of a first sealing surface of each control valve element; and a second oil groove is formed in the upper end of a second sealing surface of each control valve element. The triple pilot valve has the advantages of simple structure, high degree of standardization, long service life, low cost, small occupied space, accurate and stable travel and the like.
Description
technical field [0001] The invention relates to the field of engineering machinery, in particular to a triple pilot valve for controlling multi-way valves. Background technique [0002] At present, construction machinery such as loaders or cranes, which have been used in China for many years, need to use multiple handles for independent control because they need to realize multiple functions, such as lifting the loader arm, turning the bucket and corresponding auxiliary functions. The pilot valve used in the pilot system is usually independent, that is, it usually needs to install multiple pilot valves to realize the control of multiple reversing valves of the multi-way valve, which takes up a lot of space, complicated pipeline installation, and high cost. [0003] Among the relevant patents that have been applied in China, the patent "A Triple Pilot Valve for Loader" (application number: 201120479520.7, application date: 2011.11.28) discloses a triple pilot valve for loader...
Claims
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IPC IPC(8): F15B13/02
CPCF15B13/02
Inventor 王彦萍
Owner GUIZHOU FENGYANG HYDRAULIC