Hybrid power engineering machine multi-actuator control system

A control system and construction machinery technology, applied in mechanical equipment, fluid pressure actuators, servo motors, etc., can solve problems such as system heat generation, large pressure loss, and poor controllability

A control system and construction machinery technology, applied in mechanical equipment, fluid pressure actuators, servo motors, etc., can solve problems such as system heat generation, large pressure loss, and poor controllability

CN107489671AActive Publication Date: 2017-12-19TAIYUAN UNIV OF TECH
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  • Hybrid power engineering machine multi-actuator control system
  • Hybrid power engineering machine multi-actuator control system
  • Hybrid power engineering machine multi-actuator control system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Implementing the above-mentioned hybrid power construction machinery multi-actuator control system provided by the present invention, as shown in the attached figure 1 As shown, it includes a double-pump double-circuit hydraulic control system, which is characterized in that it is additionally equipped with a back pressure adjustment unit 1, a first conversion control valve 2, a second conversion control valve 3, a third conversion control valve 4, and a fourth conversion control valve. Valve 5, fifth switching control valve 6, sixth switching control valve 7, hydraulic control one-way valve group 8;

[0033]The first working oil port A1 of the first conversion control valve 2 communicates with the first working oil port of the left traveling hydraulic motor 22, and the second working oil port B1 communicates with the second working oil port of the left traveling hydraulic motor 22;

[0034] The first working oil port A2 of the second conversion control valve 3 communic...

Embodiment 2

[0046] Implementing the above-mentioned hybrid power construction machinery multi-actuator control system provided by the present invention, as shown in the attached figure 2 , attached image 3 As shown, it includes a double-pump double-circuit hydraulic control system, which is characterized in that it is additionally equipped with a back pressure adjustment unit 1, a first conversion control valve 2, a second conversion control valve 3, a third conversion control valve 4, and a fourth conversion control valve. Valve 5, fifth switching control valve 6, sixth switching control valve 7, hydraulic control one-way valve group 8;

[0047] The first working oil port A1 of the first conversion control valve 2 communicates with the first working oil port of the left traveling hydraulic motor 22, and the second working oil port B1 communicates with the second working oil port of the left traveling hydraulic motor 22;

[0048] The first working oil port A2 of the second switching co...

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Abstract

The invention relates to a hybrid power engineering machine multi-actuator control system which comprises a double-pump double-loop hydraulic control system. A backpressure adjusting unit, a first conversion control valve, a second conversion control valve, a third conversion control valve, a fourth conversion control valve, a fifth conversion control valve, a sixth conversion control valve and a hydraulic control one-way valve set. According to the hybrid power engineering machine multi-actuator control system, a hybrid power system is additionally arranged, recycling of movable arm potential energy and rotation braking kinetic energy is achieved, integrated control over energy recycling and load difference throttling loss eliminating is achieved, shortcomings in the prior art are effectively eliminated, and the beneficial effects of high energy efficiency, low emission and the like are achieved.

Description

technical field [0001] The invention relates to a multi-actuator control system for engineering machinery, in particular to a system for regulating, matching and recycling the pressure difference, kinetic potential energy and power of multiple actuator control valves by a hybrid power back pressure regulating unit. Background technique [0002] It is widely used in various types of construction machinery, agricultural machinery, forestry machinery, such as excavators, loaders, forklifts, truck cranes, and combine harvesters. Hydraulic control technologies such as load sensitivity, positive flow, and negative flow are widely used. Positive flow Both the negative flow system and the negative flow system are multi-actuator throttling control systems in essence. Since there is no valve port pressure difference compensation device, the controllability during operation is greatly affected by the load change, which increases the difficulty of operation. Although the load sensing sy...

Claims

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Application Information

Patent Timeline
19 Dec 2017
Publication
CN107489671A
IPC
F15B13/02; F15B11/17; F15B1/04; F15B13/06
CPC
F15B1/04; F15B11/17; F15B13/02; F15B13/06
Inventors
权龙; 李泽鹏