WO2013091417A1 - Grue et procédé et système hydraulique permettant de contrôler la tension d'un câble d'acier - Google Patents

Grue et procédé et système hydraulique permettant de contrôler la tension d'un câble d'acier Download PDF

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Publication number
WO2013091417A1
WO2013091417A1 PCT/CN2012/081952 CN2012081952W WO2013091417A1 WO 2013091417 A1 WO2013091417 A1 WO 2013091417A1 CN 2012081952 W CN2012081952 W CN 2012081952W WO 2013091417 A1 WO2013091417 A1 WO 2013091417A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
hydraulic
back pressure
hydraulic system
wire rope
Prior art date
Application number
PCT/CN2012/081952
Other languages
English (en)
Chinese (zh)
Inventor
詹纯新
刘权
李英智
张建军
李怀福
李义
Original Assignee
中联重科股份有限公司
湖南中联重科专用车有限责任公司
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 中联重科股份有限公司, 湖南中联重科专用车有限责任公司 filed Critical 中联重科股份有限公司
Publication of WO2013091417A1 publication Critical patent/WO2013091417A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
    • B66C23/62—Constructional features or details
    • B66C23/82—Luffing gear
    • B66C23/821—Bracing equipment for booms
    • B66C23/823—Bracing equipment acting in vertical direction

Definitions

  • an oil replenishing check valve is provided, the outlet of which is in communication with the first end of the hydraulic motor.
  • the back pressure valve is an electro-hydraulic proportional relief valve.
  • the back pressure valve is a pilot type back pressure valve; the hydraulic system further includes an electro-hydraulic proportional relief valve, the oil inlet of the electro-hydraulic proportional relief valve and the pilot pressure of the pilot-type back pressure valve The control port is connected.
  • the back pressure valve is a pilot type back pressure valve;
  • the hydraulic system further includes a plurality of sets of overflow valves and solenoid valves, each group includes a pilot relief valve and a solenoid valve, and one end of the solenoid valve in each group It is connected with the pilot pressure control port of the back pressure valve, and the other end is connected with the pilot relief valve inlet of the group; the pilot relief valves of each group have different pressure levels.
  • the switching valve is a solenoid valve, a proportional switching valve, a hydraulic valve or a cartridge valve.
  • the traction device of the wire rope is a hoisting speed reducer.
  • the hoisting reducer is a hoisting reducer of a super-lifting system of a crane.
  • a crane is provided.
  • the crane of the present invention has an over-winding system comprising the hydraulic system of the present invention.
  • the main reversing valve is connected to an oil passage in a hydraulic main system of the crane.
  • a method of controlling the tension of a wire rope is provided. The method for controlling the tension of a wire rope of the present invention is applied to the hydraulic system of the present invention, and the hydraulic system is a hydraulic system of a super-lifting system of a crane, and the main reversing valve is connected to a hydraulic main system of the crane.
  • the method further includes: when the main reversing valve supplies oil to the hydraulic motor from the first oil outlet thereof via the one-way valve, according to The extension length or retraction speed of the main arm controls the oil supply pressure.
  • the back pressure valve in the hydraulic system is an electro-hydraulic proportional relief valve or a pilot-type back pressure valve controlled by an electro-hydraulic proportional relief valve, and in the method, when the hydraulic motor is in the When the hoist reducer drives the oil from the first end and the second end discharges, the pressure value of the back pressure valve changes corresponding to the number of the extended arms, or corresponds to the length of the extended arm The change has changed.
  • FIG. 1 is a schematic view of a crane boom
  • 2 is a schematic view showing a basic structure of a hydraulic system for controlling the tension of a wire rope according to an embodiment of the present invention
  • the hydraulic motor 1 is for outputting power to the traction device of the wire rope;
  • the main reversing valve 2 is for introducing hydraulic oil to the hydraulic system;
  • the back pressure valve 5 is for supplying back pressure to the hydraulic motor 1;
  • the first end of the switching valve 3 is exchanged with the main The first oil outlet A of the valve 2, the inlet of the check valve 4, and the outlet of the back pressure valve 5 are communicated, the second end of the switching valve 3 and the second oil outlet B of the main switching valve 2 and the first end B of the hydraulic motor
  • the inlet of the back pressure valve 5 is in communication with the outlet of the check valve 4 and the second end A of the hydraulic motor 1.
  • the switching valve 3 may specifically be a solenoid valve (as shown in FIG.
  • FIG. 3 is another embodiment of a hydraulic system for controlling the tension of a wire rope according to an embodiment of the present invention.
  • the pressure value of the pilot type back pressure valve 31 is equal to or proportional to the pressure of the electro-hydraulic proportional relief valve 32, and the pressure value of the electro-hydraulic proportional relief valve 32 can be controlled by the magnitude of the current input to itself, thereby achieving stepless adjustment, thereby The stepless adjustment of the pressure value of the pilot type back pressure valve 31 is achieved.
  • the back pressure valve 5 employs a pilot type back pressure valve
  • the back pressure can also be controlled by a plurality of sets of pilot relief valves and solenoid valves.
  • 4 is a schematic diagram showing still another basic structure of a hydraulic system for controlling the tension of a wire rope according to an embodiment of the present invention. As shown in FIG. 4, the hydraulic system further includes a plurality of sets of overflow valves and solenoid valves, each group including a pilot overflow.
  • the crane in this embodiment has an over-winding system and also includes the hydraulic system in this embodiment.
  • the main reversing valve 2 is connected to the oil passage in the hydraulic main system of the crane through the T and the rake.
  • the hydraulic system in this embodiment will be further described below by taking an example of application to a crane super-lifting system.
  • the main reversing valve is connected with the oil circuit in the hydraulic main system of the crane, and is responsible for supplying oil to the super-lifting system to drive the super-lifting motor; the super-winding motor is connected with the super-lowering gear to realize super
  • the power output of the reducer or the motor itself is changed to a floating state, so that the super-winding reducer drives the motor to reverse;
  • the function of the check valve is to make the pressure of the main reversing valve to the mouth of the nozzle to be single-passed, The cut-off time (the oil passes through the back pressure valve at this time);
  • the function of the charge check valve is responsible for replenishing the oil from the main system for the super-lifting system to prevent vacuum or air from appearing in the system.
  • the back pressure valve can set a plurality of back pressure values to the motor when the speed reducer drives the motor to rotate.
  • the function of the solenoid valve is that when the solenoid valve is energized, the oil passages on both sides of the motor A and B ports are turned on, and the motor can form a closed small loop through the solenoid valve without supplying oil through the main reversing valve.
  • the solenoid valve When the solenoid valve is de-energized, the connection is broken and the motor must be supplied with oil through the main reversing valve to rotate.
  • Fig. 5 is a schematic view showing the state of the oil passage of the hydraulic system for controlling the tension of the wire rope when the main arm is retracted according to an embodiment of the present invention. The working state shown in FIG.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control And Safety Of Cranes (AREA)
  • Types And Forms Of Lifts (AREA)

Abstract

L'invention concerne un système hydraulique permettant de contrôler la tension d'un câble d'acier, le système comportant un distributeur principal d'inversion (2), une valve de commutation (3), un clapet de non-retour (4), une vanne de régulation de contre-pression (5), et un moteur hydraulique (1). Le distributeur principal d'inversion (2) sert à acheminer de l'huile hydraulique dans et hors du système hydraulique ; le moteur hydraulique (1) sert à fournir de l'énergie à un dispositif de traction du câble d'acier ; une première extrémité de la valve de commutation (3) est en communication avec une première sortie d'huile (A) du distributeur principal d'inversion (2), une admission du clapet de non-retour (4), et une sortie de la vanne de régulation de contre-pression (5) ; une seconde extrémité de la valve de commutation (3) est en communication avec une seconde sortie d'huile (B) du distributeur principal d'inversion (2) et une première extrémité (B) du moteur hydraulique ; et une admission de la vanne de régulation de contre-pression (5) est en communication avec une sortie du clapet de non-retour (4) et une seconde extrémité (A) du moteur hydraulique (1). La présente invention concerne une grue ayant le système hydraulique et un procédé de contrôle de la tension d'un câble d'acier. Le système et le procédé peuvent résoudre les problèmes présents dans l'état de la technique comme quoi une grue à flèche télescopique ayant un mécanisme d'enroulement à super levage a une faible stabilité et une faible efficacité de fonctionnement lors du déploiement d'une flèche de levage.
PCT/CN2012/081952 2011-12-19 2012-09-25 Grue et procédé et système hydraulique permettant de contrôler la tension d'un câble d'acier WO2013091417A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110427462.8 2011-12-19
CN201110427462.8A CN102491174B (zh) 2011-12-19 2011-12-19 起重机以及控制钢丝绳拉力的方法和液压系统

Publications (1)

Publication Number Publication Date
WO2013091417A1 true WO2013091417A1 (fr) 2013-06-27

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PCT/CN2012/081952 WO2013091417A1 (fr) 2011-12-19 2012-09-25 Grue et procédé et système hydraulique permettant de contrôler la tension d'un câble d'acier

Country Status (2)

Country Link
CN (1) CN102491174B (fr)
WO (1) WO2013091417A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105460810A (zh) * 2015-12-14 2016-04-06 徐州徐工随车起重机有限公司 一种内置三液压缸随车起重机用伸缩臂

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* Cited by examiner, † Cited by third party
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CN102491174B (zh) * 2011-12-19 2014-04-02 中联重科股份有限公司 起重机以及控制钢丝绳拉力的方法和液压系统
CN103030064B (zh) * 2012-12-20 2015-05-13 中联重科股份有限公司 一种工程机械设备的控制系统及控制方法
CN103058071B (zh) * 2012-12-27 2015-07-22 徐州重型机械有限公司 起重机及超起收绳液压系统、控制系统、速度控制方法
CN103016436B (zh) * 2012-12-31 2017-05-24 广东工业大学 一种液压传动用大流量二位四通高速开关阀及其应用
CN103671326B (zh) * 2013-12-18 2016-08-24 徐州重型机械有限公司 起重机及其卷扬马达控制系统、用于该系统的浮动控制阀
CN104044998B (zh) * 2014-06-06 2017-02-01 淮南联合大学 一种双制动型矿用单轨吊行走机构液压系统
CN104495624B (zh) * 2014-12-15 2017-08-25 太原重工股份有限公司 超起卷扬锁销装置控制系统及起重机
CN111675103B (zh) * 2020-06-17 2022-04-15 三一海洋重工有限公司 臂架俯仰切换控制方法及控制系统
CN112645163B (zh) * 2020-11-10 2022-12-27 中国煤炭科工集团太原研究院有限公司 卷缆装置和卷缆装置的控制方法
CN113834694B (zh) * 2021-09-07 2024-02-06 安徽建筑大学 张拉力自适应四轴智能扦样机

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JPH11263594A (ja) * 1998-03-18 1999-09-28 Tadano Ltd クレーン用ウインチ作動装置
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JPH11199181A (ja) * 1998-01-13 1999-07-27 Sumitomo Constr Mach Co Ltd 油圧ウインチのカウンタバランス回路
JPH11263594A (ja) * 1998-03-18 1999-09-28 Tadano Ltd クレーン用ウインチ作動装置
CN102153027A (zh) * 2011-04-12 2011-08-17 武汉船用机械有限责任公司 一种液压绞车无级调节恒张力装置
CN102491174A (zh) * 2011-12-19 2012-06-13 中联重科股份有限公司 起重机以及控制钢丝绳拉力的方法和液压系统
CN202369268U (zh) * 2011-12-19 2012-08-08 中联重科股份有限公司 起重机以及控制钢丝绳拉力的液压系统

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105460810A (zh) * 2015-12-14 2016-04-06 徐州徐工随车起重机有限公司 一种内置三液压缸随车起重机用伸缩臂

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CN102491174A (zh) 2012-06-13

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