A buffer regulator valve for hydraulic motor
A hydraulic motor and pressure stabilizing valve technology, which is applied in the field of hydraulic components, can solve problems such as unstable performance, large pressure pulse, and complex structure of buffering and stabilizing valves, and achieve the effect of simple and reasonable structure, stable and reliable performance
Active Publication Date: 2016-01-27
龙工(上海)精工液压有限公司
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Problems solved by technology
[0003] The technical problem to be solved by the present invention is to provide a buffer regulator valve to overcome the problems of traditional hydraulic motor buffer regulator valve with complex structure, large pressure pulse and unstable performance
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[0012] Such as figure 1 As shown, it is a schematic structural diagram of a buffer regulator valve for a hydraulic motor. The buffer regulator valve for a hydraulic motor includes a valve body 1. The valve body 1 is provided with a first oil circuit A and oil return oil. Road B, second oil passage C, brake release oil passage D, third oil passage E, fourth oil passage F and fifth oil passage G, first oil passage A, return oil passage B, second oil passage C and brake release oil passage D are arranged in order from top to bottom. The second oil passage C and brake release oil passage D are exposed from the left end of the valve body 1, and the first oil passage A passes through the left and right sides of the valve body 1. The oil passage B is exposed from the right end of the valve body 1, and the second oil passage C has five cylindrical cavities from left to right, namely the first cylindrical cavity C1, the second cylindrical cavity C2, the third cylindrical cavity C3, and ...
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The invention provides a novel buffering pressure-stabilizing valve used for a hydraulic motor. The novel buffering pressure-stabilizing valve is characterized by comprising a valve body, wherein a first oil channel, an oil return channel, a second oil channel, a brake relieving oil channel, a third oil channel, a fourth oil channel and a fifth oil channel are arranged in the valve body; the first oil channel is communicated with the third oil channel through a first valve core; the lower end of the third oil channel is communicated with a second cylindrical cavity of the second oil channel; the fourth oil channel is communicated with the brake relieving oil channel and a fourth cylindrical cavity of the second oil channel respectively; the fifth oil channel is communicated with the oil return channel and a fifth cylindrical cavity of the second oil channel; and a second valve core is arranged in the second oil channel and comprises a valve core body, a section of third cylindrical surface, a section of first cylindrical surface and a section of second cylindrical surface are arranged on the side surface of the valve core body, the third cylindrical surface and the first cylindrical surface are matched with a first cylindrical cavity and a third cylindrical cavity of the second oil channel respectively, and the second cylindrical surface is arranged in the fifth cylindrical cavity of the second oil channel. The novel buffering pressure-stabilizing valve is simple and reasonable in structure and has stable and reliable performance.
Description
Technical field [0001] The invention relates to a buffer regulator valve, which is used in a hydraulic actuator of a large and medium hydraulic excavator, and belongs to the technical field of hydraulic components. Background technique [0002] The buffer regulator valve is an important component of the hydraulic motor. When the hydraulic motor is working, due to the influence of the load and system pressure, the brake release oil pressure will produce large fluctuations, which is very detrimental to the performance and reliability of the hydraulic motor brake, and also affects the safety and life of the entire motor. influences. The buffer regulator valve can effectively control the pressure of the brake release oil chamber. When the motor starts, works and brakes, it ensures the stable establishment, stable maintenance and steady reduction of the brake release oil chamber pressure, making the motor's work flow transition more Stable and effective extension of the life of hydr...
Claims
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IPC IPC(8): F15B13/02
Inventor 余红波刘辉韩帅
Owner 龙工(上海)精工液压有限公司