An output flow control device of a hydraulic pump
A technology for output flow and control devices, which is applied in the direction of fluid pressure actuators, servo motors, servo motor components, etc., can solve problems such as low efficiency, high calorific value, and inability to comprehensively consider pressure, flow, power, and efficiency. Achieve good system stability
Active Publication Date: 2018-01-05
SUZHOU SABO IND DESIGN
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Problems solved by technology
[0003] In actual production work, due to the disadvantages of traditional quantitative pumps such as large heat generation and low efficiency, the existing hydraulic pumps have appeared manual variable, negative pressure oil flow variable, etc. according to different working methods and conditions of mechanical devices. Pressure compensation variable, constant pressure variable and other variable methods, variable pumps using these variable methods can only take into account the individual performance of hydraulic pumps, that is, they cannot comprehensively consider the performance of pressure, flow, power, efficiency, etc.
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[0017] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.
[0018] see Figure 1-3 , the present invention includes: valve body 1, first left working port 2, first middle working port 3, first right working port 4, first valve core 5, first spring seat 6, first spring 7, first valve Cover 8, second valve cover 9, second spring 10, second spring seat 11, second right working port 12, second middle working port 13, second spool 14, second left working port 15, regulating piston 16 , piston rod 17, spool 18, lateral middle hole 19, piston guide sleeve 20, spring seat 21, adjustment screw 22, hydraulic oil through hole 23, protective cap 24, reset adjustment spring 25, high-pressure oil inlet 26, spherical surface Seat 27, steel ball 28, check valve spring 29.
[0019] figure 1 The hydraulic control princ...
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The invention relates to an output flow control device of a hydraulic pump, which includes a hydraulic pump, a hydraulic cylinder, a constant power control valve, and a flow pressure control valve. The valve control valve keeps the power of the hydraulic pump stable. The present invention adopts the linkage of flow control valve, pressure control valve and constant power control valve, which can realize the control of pressure, power and flow, and meet various control requirements of hydraulic pumps, such as power adjustment and safety protection; the present invention adopts pressure variable control The flow pressure control valve is used for variable control, and the system has good stability.
Description
technical field [0001] The invention relates to an output flow control device of a hydraulic pump. Background technique [0002] The hydraulic pump is the power component in the hydraulic system. It converts the mechanical energy input by the motor into the pressure energy of the hydraulic oil and provides a certain flow of pressure oil. [0003] In actual production work, due to the disadvantages of traditional quantitative pumps such as large heat generation and low efficiency, the existing hydraulic pumps have appeared manual variable, negative pressure oil flow variable, etc. according to different working methods and conditions of mechanical devices. Pressure compensation variable, constant pressure variable and other variable methods, variable pumps using these variable methods can only consider the individual performance of hydraulic pumps, that is, they cannot comprehensively consider the performance of pressure, flow, power, efficiency and other aspects. [0004] A...
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IPC IPC(8): F15B11/08F15B13/02
Inventor 丁会张苏陈力航
Owner SUZHOU SABO IND DESIGN