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Double-hydraulic-cylinder mixed drive control system

A hybrid drive, dual hydraulic cylinder technology, applied in the field of hydraulic systems, can solve the problems of not being able to take into account other actuators at the same time, the drive motor cannot meet the needs, etc., and achieve the effects of low cost, low installed power, and reduced installed power.

Active Publication Date: 2015-03-25
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The dual hydraulic cylinders of the lifting mechanism adopt a closed circuit, and the driver can only supply energy for the dual hydraulic cylinders of the lifting mechanism, but cannot take into account other actuators at the same time. When multiple actuators need high power output, the drive The motor cannot meet the needs

Method used

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  • Double-hydraulic-cylinder mixed drive control system
  • Double-hydraulic-cylinder mixed drive control system
  • Double-hydraulic-cylinder mixed drive control system

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Such as figure 1 and figure 2 As shown, the dual hydraulic cylinder hybrid drive control system in this embodiment includes A hydraulic cylinder 11, B hydraulic cylinder 12, mechanical arm 1 and control circuit, wherein: the control circuit includes A power element 4, B power element 6, hydraulic pressure Pump 5, power source 3, control valve group 2, three-position four-way valve 7, accumulator 8 and two-position two-way valve 9;

[0024] The control valve group 2 is composed of two-position two-way valves A, B, C, and D. The first oil port of the two-position two-way valve of A is connected to the fourth oil port of the three-position four-way valve and the accumulator. The other oil port of the two-position two-way valve is connected with one oil port of the B two-position two-way valve, the other oil port of the B two-position two-way valve is connected with one oil port of the C two-position two-way valve, and the C two-position two-way valve is connected with on...

Embodiment 2

[0029] Such as image 3 As shown, the dual hydraulic cylinder hybrid drive control system in this embodiment only replaces the three-position four-way valve 7 in Embodiment 1 with a two-position three-way valve 10, and the oil outlet of the B power element is connected to the two-position three-way valve. The first oil port of the valve is connected, the second oil port of the two-position three-way valve is connected to the oil tank, the third oil port of the two-position three-way valve is connected to the accumulator and the first oil port of A two-position two-way valve in the control valve group The port is connected, and the oil inlet port of the B power component is connected with the fuel tank. The rest of the structures and connections are the same as those in Example 1.

[0030] The A, B, C, and D two-position two-way valves, two-position two-way valves and three-position four-way valves in the control valve group in the above embodiment are on-off reversing valves ...

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Abstract

The invention discloses a double-hydraulic-cylinder mixed drive control system. A control loop of the system comprises a power element A, a power element B, a hydraulic pump, a power source, a control valve set, a three-position four-way valve, an energy accumulator and a two-position two-way valve. A closed control composite control loop with an independent inlet and an independent outlet is adopted for the control system, mixed drive and energy recycling are achieved for double hydraulic cylinders, and energy is provided for the double hydraulic cylinders while power can be provided for other executing mechanisms. The double-hydraulic-cylinder mixed drive control system has the technical advantages of being high in energy efficiency, small in throttling loss, small in machine installing power, redundant in power source, free of pilot oil source, low in cost and noise, integrated in kinetic potential energy recycling and the like.

Description

technical field [0001] The invention belongs to the technical field of hydraulic systems, and in particular relates to a dual hydraulic cylinder hybrid drive control system which integrates drive recovery and can supply energy to other actuators. Background technique [0002] With the tremendous development of my country's construction machinery industry, how to efficiently drive and reduce the energy consumption of construction machinery has become an urgent problem in front of us. Most of the booms of construction machinery such as crane booms, excavator booms and loader booms are driven by dual-cylinder hydraulic synchronous drive, which is of great significance to the research of dual hydraulic synchronous drive and energy recovery control of construction machinery, and has gradually become a domestic Important research directions and research hotspots in foreign mechanical engineering disciplines. [0003] At present, the hybrid power of construction machinery mostly a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/22F15B7/00
Inventor 权龙郝惠敏熊晓燕程珩韩晓红
Owner TAIYUAN UNIV OF TECH
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