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Variable control device of hydraulic pump and control method thereof

A technology of variable control and hydraulic pumps, which is applied in the direction of fluid pressure actuators, servo motors, servo motor components, etc., can solve problems such as low efficiency, high heat generation, and inability to comprehensively consider pressure, flow, power, and efficiency performance. Achieve good system stability

Active Publication Date: 2015-12-16
SUZHOU SABO IND DESIGN
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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.

Method used

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  • Variable control device of hydraulic pump and control method thereof
  • Variable control device of hydraulic pump and control method thereof
  • Variable control device of hydraulic pump and control method thereof

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Embodiment Construction

[0021] 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.

[0022] 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.

[0023] figure 1 The hydraulic control princ...

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Abstract

The invention relates to a variable control device of a hydraulic pump. The variable control device comprises a hydraulic pump, a hydraulic cylinder, a constant power control valve and a flow pressure control valve, wherein pressure oil adjusts the output flow and the working pressure of the hydraulic pump by the flow pressure control valve, and enables the power of the hydraulic pump to be kept stable by the constant power control valve. The device can realize the pressure, power and flow control through linking the flow control valve, the pressure control valve and the constant power control valve to satisfy multiple control demands of the hydraulic pump, such as power adjustment and safety protection; and the device adopts the flow pressure control valve for pressure variable control to perform the variable control, so that the system stability is excellent.

Description

technical field [0001] The invention relates to a variable control device of a hydraulic pump and a control method thereof. 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 o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B11/08F15B13/04
Inventor 丁会张苏陈力航
Owner SUZHOU SABO IND DESIGN
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