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Energy-store state-liquid driving device of secondary flow-regulation coupling hydraulic energy accumulator

A hydraulic accumulator and secondary adjustment technology, which is applied in fluid pressure actuation devices, fluid pressure actuation system components, mechanical equipment, etc., to achieve the effect of reducing energy consumption and reducing installed power

Inactive Publication Date: 2007-11-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the contradiction between the constant pressure network that can only allow pressure changes in a small range in the existing secondary regulation hydrostatic transmission system and the hydraulic accumulator energy recovery subsystem that requires pressure changes in a large range , the present invention provides a secondary regulating flow coupled hydraulic accumulator energy storage hydrostatic transmission device

Method used

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  • Energy-store state-liquid driving device of secondary flow-regulation coupling hydraulic energy accumulator
  • Energy-store state-liquid driving device of secondary flow-regulation coupling hydraulic energy accumulator
  • Energy-store state-liquid driving device of secondary flow-regulation coupling hydraulic energy accumulator

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specific Embodiment approach 1

[0009] Specific implementation mode 1: The hydraulic accumulator energy storage hydrostatic transmission device for secondary flow adjustment in this embodiment is driven by a load to drive a hydraulic pump / motor 1, an electric motor 2, an energy storage hydraulic pump / motor 3, and a control oil circuit assembly 4 , energy storage electro-hydraulic control valve assembly 5, hydraulic accumulator assembly 6, hydraulic cylinder safety valve assembly 7, hydraulic cylinder 8, upper limit sensor 9, lower limit sensor 10, load-driven electro-hydraulic control valve assembly 12 and controller 13 composition.

[0010] The piston rod of the hydraulic cylinder 8 is connected to an external heavy load 11, and an upper limit sensor 9 and a lower limit sensor 10 are fixed on the side of the piston rod of the hydraulic cylinder 8, and the upper limit sensor 9 and the lower limit sensor 10 The distance between them is equal to the working stroke of the hydraulic cylinder 8, and the electrica...

specific Embodiment approach 2

[0023] Embodiment 2: The difference between this embodiment and the hydrostatic transmission device for secondary flow regulation coupled hydraulic accumulator energy storage described in Embodiment 1 is that it also includes a control oil circuit driving motor 14, a control oil circuit assembly The transmission shaft of the control hydraulic pump 4-2 in 4 is not connected with the output shaft of the motor 2, but is fixedly connected with the output shaft of the control oil passage drive motor 14.

[0024] The control oil circuit assembly 4 of this embodiment works independently and is not affected by the working condition of the transmission motor 2 .

specific Embodiment approach 3

[0025] Specific Embodiment 3: The difference between this embodiment and the secondary regulating flow coupling hydraulic accumulator energy storage hydrostatic transmission described in Embodiment 1 or 2 is that it also includes a plurality of accumulator assemblies 6, so The oil delivery ports of the plurality of hydraulic accumulator assemblies are connected in parallel and communicate with the oil delivery ports of the accumulator hydraulic pump / motor 3.

[0026] In this embodiment, multiple hydraulic accumulator assemblies 6 are used in parallel, and multiple hydraulic accumulator assemblies can be configured according to the actual site conditions and the volume and output pressure of the selected accumulator, which improves the versatility of the system .

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Abstract

The invention provides a secondary Regulation flow coupled hydraulic accumulator storage hydrostatic transmission device, relating to a secondary hydrostatic transmission method and systems. It solves the contradiction between constant coltage net which only allows pressure to change in small range and hydraulic pressure accumulator energy recovery subsystems which need to change pressure in a large range existing in the secondary regulation hydrostatic transmission system. It adopts hydraulic pressure accumulator to output hydraulic oil and drives hydraulic pressure storage pump or motor and electric motor to drive hydraulic oil cylinder to work with load. When the load need to descend, load-driven hydraulic pump or motor and storage Hydraulic Pump or Motor change work condition respectively and recover and storage the potential energy which is produced by the hydraulic oil cylinder. When the load need to up run, energy storage hydraulic pump or motor and load driver Hydraulic Pump or Motor change work condition respectively and do the above work again. This invention can be used in the hoist nd hydraulic pumping and so on.

Description

technical field [0001] The utility model relates to a hydraulic accumulator energy storage hydrostatic transmission device for secondary adjustment flow coupling, and relates to a secondary adjustment hydrostatic transmission method and system. Background technique [0002] Secondary adjustment hydrostatic transmission technology is generally defined as a hydraulic transmission technology that performs closed-loop control of hydraulic pumps / motors in a constant pressure network without throttling. Since the system generally works in a pressure coupling system, it is called CPS (Common Pressure System), CPR (Common Pressure Rail), or SCS (Secondary Controlled System) in most cases. This technology has attracted more and more attention due to its advantages such as multi-load parallel connection, good control characteristics, and the ability to recover system braking kinetic energy and potential energy. Foreign countries have applied this technology to hoisting machinery, vehi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/18F15B21/14
Inventor 姜继海刘宇辉
Owner HARBIN INST OF TECH
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