WO2023097882A1 - Système de commande pilote, bloc de soupape intégré et machine d'operation - Google Patents

Système de commande pilote, bloc de soupape intégré et machine d'operation Download PDF

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Publication number
WO2023097882A1
WO2023097882A1 PCT/CN2022/073806 CN2022073806W WO2023097882A1 WO 2023097882 A1 WO2023097882 A1 WO 2023097882A1 CN 2022073806 W CN2022073806 W CN 2022073806W WO 2023097882 A1 WO2023097882 A1 WO 2023097882A1
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WO
WIPO (PCT)
Prior art keywords
valve
oil
electromagnetic reversing
port
reversing valve
Prior art date
Application number
PCT/CN2022/073806
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English (en)
Chinese (zh)
Inventor
廖小宁
张政委
梁凯
Original Assignee
湖南三一中型起重机械有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 湖南三一中型起重机械有限公司 filed Critical 湖南三一中型起重机械有限公司
Publication of WO2023097882A1 publication Critical patent/WO2023097882A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors

Definitions

  • the invention relates to the technical field of hydraulic control, in particular to a pilot control system, an integrated valve block and an operating machine.
  • the pilot control system further includes a one-way valve 200 and an accumulator 300, the oil inlet of the one-way valve 200 is connected with the pressure relief valve 100, and the oil outlets of the one-way valve 200 are respectively It is connected with the accumulator 300 and the oil inlet of the first electromagnetic reversing valve 400 , wherein the first electromagnetic reversing valve 400 is connected with the accumulator 300 .
  • the main road pressure oil entering from the main road pressure oil port 110 enters the decompression and relief valve 100 for decompression, and then opens the check valve 200 to fill the accumulator 300 with liquid, and the first solenoid Reversing valve 400 supplies oil.
  • the accumulator 300 is first filled with liquid, and when the accumulator 300 reaches a limited pressure, the oil re-entered from the one-way valve 200 is used to supply oil to the first electromagnetic reversing valve 400 .
  • the one-way valve 200 prevents the oil from flowing back, and the decompression and relief valve 100 plays the role of decompression and relief, so as to stabilize the pressure of the pilot control system and limit the pressure to avoid damage to the hydraulic components.
  • the oil entering from the one-way valve 200 can enter the second electromagnetic reversing valve 410, and when the second electromagnetic reversing valve 410 is de-energized, the second electromagnetic reversing valve 410 does not enter the oil, and the second electromagnetic reversing valve 410 does not enter the oil.
  • the oil outlet of the electromagnetic reversing valve 410 is connected to the brake oil port 414 for unloading.
  • the second electromagnetic reversing valve 410 is energized, the oil entering from the check valve 200 enters the oil inlet of the second electromagnetic reversing valve 410, thereby entering the brake oil port 414, and the brake device is activated. control.
  • oil pressure fluctuations will be generated, and the accumulator 300 can absorb pressure shocks for the generated oil pressure fluctuations.
  • both the first electromagnetic reversing valve 400 and the second electromagnetic reversing valve 410 include an unloading port, and the unloading port is connected to the main pressure relief oil port 120 .
  • the first electromagnetic reversing valve 400 In the state of the second working position, for the first electromagnetic reversing valve 400, the first electromagnetic reversing valve 400 is de-energized, the first unloading port 403 communicates with the first oil outlet 402, and the pilot oil port of the main valve is Unloading, the first oil inlet 401 is blocked; for the second electromagnetic reversing valve 410, the second electromagnetic reversing valve 410 is de-energized, the second unloading port 413 communicates with the second oil outlet 412, and the brake The oil port 414 is unloaded, and the second oil inlet 411 is blocked.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

La présente invention concerne un système de commande pilote, un bloc de soupape intégré et une machine d'opération. La présente invention concerne le domaine de commande hydraulique. Le système de commande pilote comprend une soupape de trop-plein de décompression et une première soupape d'inversion électromagnétique, un orifice d'entrée d'huile de la soupape de trop-plein de décompression étant relié à un orifice d'huile sous pression de trajet principal, un orifice de sortie d'huile de la soupape de trop-plein de décompression est reliée à un orifice d'entrée d'huile de la première soupape d'inversion électromagnétique, et un orifice de sortie d'huile de la première vanne d'inversion électromagnétique est en communication avec un orifice d'huile pilote de vanne principale. Au moyen du système de commande pilote selon la présente invention, l'huile de pression de trajet principal est décomprimée au moyen de la soupape de trop-plein de décompression et sert ensuite d'huile pilote du système de commande pilote, et la première vanne d'inversion électromagnétique est agencée pour commander un orifice pilote de vanne principale, afin de réaliser un trajet d'huile pilote pouvant être commandé, et une pompe à huile pilote dans l'état de la technique est remplacée par la décompression de l'huile sous pression de trajet principal au moyen de la soupape de trop-plein de décompression, permettant ainsi d'en réduire les coûts.
PCT/CN2022/073806 2021-11-30 2022-01-25 Système de commande pilote, bloc de soupape intégré et machine d'operation WO2023097882A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202111447518.6A CN114198354B (zh) 2021-11-30 2021-11-30 先导控制系统、集成阀块以及作业机械
CN202111447518.6 2021-11-30

Publications (1)

Publication Number Publication Date
WO2023097882A1 true WO2023097882A1 (fr) 2023-06-08

Family

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Application Number Title Priority Date Filing Date
PCT/CN2022/073806 WO2023097882A1 (fr) 2021-11-30 2022-01-25 Système de commande pilote, bloc de soupape intégré et machine d'operation

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CN (1) CN114198354B (fr)
WO (1) WO2023097882A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009144880A (ja) * 2007-12-18 2009-07-02 Fuji Koki Corp 四方切換弁用ピストン装置
CN102758808A (zh) * 2012-07-26 2012-10-31 徐州徐工挖掘机械有限公司 一种前置高压过滤器的先导油源控制阀组
CN205937259U (zh) * 2016-05-27 2017-02-08 徐工集团工程机械股份有限公司科技分公司 基于负载反馈控制的集成阀块及系统
CN207047941U (zh) * 2017-06-28 2018-02-27 徐州徐工挖掘机械有限公司 一种小型液压挖掘机先导油源阀组及小型液压挖掘机
CN207213275U (zh) * 2017-06-12 2018-04-10 南通华东油压科技有限公司 一种新型工作联阀体铸件
CN113464514A (zh) * 2021-07-30 2021-10-01 湖南三一中型起重机械有限公司 集成式电控多路阀及起重机

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4421852A1 (de) * 1994-06-22 1996-01-04 Zahnradfabrik Friedrichshafen Energieversorgung für hydraulische Antriebe, insbesondere Hilfskraftlenkungen von Kraftfahrzeugen

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009144880A (ja) * 2007-12-18 2009-07-02 Fuji Koki Corp 四方切換弁用ピストン装置
CN102758808A (zh) * 2012-07-26 2012-10-31 徐州徐工挖掘机械有限公司 一种前置高压过滤器的先导油源控制阀组
CN205937259U (zh) * 2016-05-27 2017-02-08 徐工集团工程机械股份有限公司科技分公司 基于负载反馈控制的集成阀块及系统
CN207213275U (zh) * 2017-06-12 2018-04-10 南通华东油压科技有限公司 一种新型工作联阀体铸件
CN207047941U (zh) * 2017-06-28 2018-02-27 徐州徐工挖掘机械有限公司 一种小型液压挖掘机先导油源阀组及小型液压挖掘机
CN113464514A (zh) * 2021-07-30 2021-10-01 湖南三一中型起重机械有限公司 集成式电控多路阀及起重机

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CN114198354B (zh) 2022-12-02
CN114198354A (zh) 2022-03-18

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