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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

Active Publication Date: 2017-12-19
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the traditional negative flow control system, the multi-way valve is used as the main control valve to control the operation of the hydraulic actuator, the ratio of the area ratio of the inlet and outlet ports is fixed, there is only one control degree of freedom, and only the hydraulic actuator can be controlled at the same time. The controllability of the pressure or flow of a chamber of the actuator is poor; the inlet and outlet of the actuator are throttled at the same time during operation, and the pressure loss is large, especially under the overload condition, this problem is more serious, resulting in large energy consumption and system heat generation

Method used

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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

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B13/02F15B11/17F15B1/04F15B13/06
CPCF15B1/04F15B11/17F15B13/02F15B13/06
Inventor 权龙李泽鹏葛磊熊晓燕
Owner TAIYUAN UNIV OF TECH
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