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Throttle volume direct drive compound inlet and outlet independent control electro-hydraulic system

An independent control, oil inlet and outlet technology, applied in construction, earth mover/shovel, etc., can solve the problems of complex technology and low recovery efficiency, and achieve the effect of reducing energy consumption, improving efficiency and improving energy saving.

Active Publication Date: 2020-03-17
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current methods generally have the problems of technical complexity and low recycling efficiency.

Method used

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  • Throttle volume direct drive compound inlet and outlet independent control electro-hydraulic system
  • Throttle volume direct drive compound inlet and outlet independent control electro-hydraulic system
  • Throttle volume direct drive compound inlet and outlet independent control electro-hydraulic system

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Embodiment Construction

[0028] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0029] as attached figure 1 As shown, it includes hydraulic cylinder 1, first three-position four-way valve 2, second two-position four-way valve 3, two-position two-way valve 4, A power source 5, B power source 6, DC-DC converter 10, Supercapacitor 11 , common DC bus 12 , smoothing capacitor 13 , rectifier 14 , main power switch 15 . The A power source and the B power source both include a hydraulic motor / pump 7 , an electric motor / generator 8 , and an inverter 9 . The input terminals of the inverter 9 are all connected to the common DC bus 12 , the output terminals of the inverter 9 are connected to the driven motor / generator 8 , and the motor / generator 8 is connected to the driven hydraulic motor / pump 7 .

[0030] Throttle volume direct drive compound oil inlet and outlet independent control electro-hydraulic system...

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Abstract

Disclosed is a throttling volume direct drive compound oil inlet and outlet independent control electro-hydraulic system. The system comprises a power source, a hydraulic cylinder, a three-position four-way valve, a two-position two-way valve, a DC-DC module and a super-capacitor module. Oil outlets of two hydraulic motors / pumps correspondingly communicate with the hydraulic cylinder through the three-position four-way valve. Oil inlets correspondingly communicate with an oil box or an energy accumulator. Output shafts of the hydraulic motors / pumps are correspondingly connected with an output shaft of a motor / generator. The super-capacitor module is connected with a direct-current bus of a driver of the motor / generator. According to the throttling volume direct drive compound oil inlet and outlet independent control electro-hydraulic system, by controlling the three-position four-way valve, or the two-position two-way valve / proportional throttling valve, backpressure control is achieved, inlet and outlet independent control is achieved, power matching is achieved, and different structure functions of energy recycle achieve structural effects of different working conditions.

Description

technical field [0001] The invention relates to an electro-hydraulic system for independent control of oil inlet and outlet, in particular to an electro-hydraulic system for independent control of composite oil inlet and outlet of throttling volume direct drive type. Background technique [0002] With the development of economy and technology, hydraulic excavators are more and more widely used in the construction machinery industry and play a huge role in modernization construction. Hydraulic excavators have the advantages of high efficiency, durability, and low requirements on the working environment, but the disadvantages of high energy consumption and high emissions cannot be ignored. In today's world, resources are increasingly scarce and environmental pollution is becoming more and more serious. Therefore, research on high efficiency, energy saving, emission reduction and environmental protection of hydraulic excavators has important practical significance. [0003] T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F9/22
CPCE02F9/2217E02F9/2267
Inventor 权龙刘赫葛磊李泽鹏
Owner TAIYUAN UNIV OF TECH