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WO1999037574A1 - Dispositif hydraulique et automatique de soulevement d'une charge et procede associe - Google Patents

Dispositif hydraulique et automatique de soulevement d'une charge et procede associe Download PDF

Info

Publication number
WO1999037574A1
WO1999037574A1 PCT/CN1999/000008 CN9900008W WO9937574A1 WO 1999037574 A1 WO1999037574 A1 WO 1999037574A1 CN 9900008 W CN9900008 W CN 9900008W WO 9937574 A1 WO9937574 A1 WO 9937574A1
Authority
WO
WIPO (PCT)
Prior art keywords
oil
cylinder
accumulator
pipe
valve
Prior art date
Application number
PCT/CN1999/000008
Other languages
English (en)
Chinese (zh)
Inventor
Xuanzhe Hu
Original Assignee
Mvp (H.K.) Industries Limited
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 Mvp (H.K.) Industries Limited filed Critical Mvp (H.K.) Industries Limited
Priority to AU20448/99A priority Critical patent/AU2044899A/en
Publication of WO1999037574A1 publication Critical patent/WO1999037574A1/fr

Links

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
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F15B1/024—Installations or systems with accumulators used as a supplementary power source, e.g. to store energy in idle periods to balance pump load
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
    • B66F3/00—Devices, e.g. jacks, adapted for uninterrupted lifting of loads
    • B66F3/24—Devices, e.g. jacks, adapted for uninterrupted lifting of loads fluid-pressure operated

Definitions

  • the invention relates to a fully-automatic control device and method for hydraulically continuously lifting a load. Background of the invention
  • the object of the present invention is to provide a fully automatic device and method for a hydraulic jacking machine that has a simple structure, is easy to operate, and transmits power in three ways: mechanical, gas, and liquid.
  • the invention is implemented as follows:
  • the rodless end of the oil cylinder is provided with a jack spring.
  • the oil inlet pipe connected to the oil pump is equipped with a branch pipe through a one-way charge valve to the fuel tank.
  • the accumulator, the machine-controlled check valve, and the oil return rotary valve are connected by oil pipes in order
  • the oil pipe with a rod end of the oil cylinder connects the oil pipe between the accumulator and the machine-controlled check valve.
  • the oil return rotary valve consists of a front cut-off unit, a rear cut-off unit and a handle. The tubing of the rear cut-off unit is connected to the fuel tank.
  • the mechanical force of the spring is used to automatically achieve the light load in place, the hydraulic pressure is used to complete the heavy load boost and supply energy to the accumulator, and then the accumulator releases the pressure oil and combines the spring force to complete the automatic position.
  • the invention has a simple structure and convenient operation. As long as the oil return rotary valve is opened and closed once, the entire control process is completed automatically. The huge energy of the heavy object falling is absorbed and buffered by the accumulator, which is not only safe and stable when the load drops, but also converts the potential energy of the heavy object into available kinetic energy.
  • FIG. 1 is a structural schematic diagram of the present invention.
  • a branch pipe 17 connected to the fuel tank 10 is provided on an oil inlet pipe connecting the oil pump 1 and the oil cylinder 2.
  • the branch pipe 17 is provided with a one-way charge valve 16.
  • the cylinder 2 is provided with a piston 18 and a piston rod 3, a rodless end of the cylinder 2 is provided with a spring 15, and a bottom of the cylinder 2 is connected to the oil rotary valve 13 through an oil return pipe 14.
  • the oil return rotary valve 13 includes a front cut-off unit 12, a rear cut-off unit 13 and a handle 9 with a bump point 8.
  • connection pipes of the front and rear cut-off units 12 and 11 are connected to the input end of the mechanically controlled check valve 7 with the bumper 19, and the output end is connected to the accumulator 6 through the oil pipe.
  • the top of the oil cylinder 2 communicates with the accumulator 6 through an oil discharge pipe 4.
  • a diversion tank 5 is installed below the drain pipe 4 of the oil cylinder 2 and communicates with the accumulator 6.
  • the front and rear cut-off units 12, 11 for the two high-pressure seals on the same valve stem are opened.
  • the tank passage is cut off by operating the rotary handle 9 and the rear cut-off unit 11.
  • the touch point 8 opens the machine-controlled check valve 7, the oil in the accumulator 6.
  • the oil from the fill valve 16 enters the lower end of the piston 18 of the cylinder 2 together with the force of the spring 15 to lift the piston 18, so that the piston rod 3 quickly contacts the workpiece to be jacked, and then the front cutoff unit 12 is closed, and the oil pump 1 supplies oil.
  • the elastic mechanical force of the spring I 5 slowly lifts the weight up, the piston 18 reaches a high position, and the oil enters the accumulator 6 through the shunt groove 5.
  • the front cut-off unit 12 is opened, the weight is dropped, and the oil in the rodless end of the cylinder 2 enters the accumulator 6 through the mechanically controlled check valve 7, and then the contact point 8 leaves the mechanically controlled check valve ⁇ .
  • the lever 19 is pressed, the oil pressure in the accumulator 6 is locked, and immediately after the cut-off unit 11 is opened, the oil pressure of the accumulator 6 returns the piston I 8 of the oil cylinder 2 to the original position, and is locked by the machine-controlled check valve 7 Close the oil path and stabilize at a low position.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Structural Engineering (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

L'invention concerne un dispositif hydraulique et automatique de soulèvement d'une charge et le procédé associé. Un ressort de remontée se trouve dans le cylindre du dispositif. Une branche du tuyau d'entrée du cylindre est connectée à un réservoir au moyen d'un clapet de compensation afin de remplir le réservoir d'huile; un accumulateur, avec lequel le tuyau de sortie du cylindre est en communication, un clapet de compensation commandé mécaniquement et un robinet rotatif de renvoi d'huile sont connectés successivement par des tuyaux d'huile; et le robinet rotatif de renvoi d'huile est constitué d'une partie avant de robinet d'arrêt connectée au tuyau de renvoi au niveau de l'extrémité sans tige du cylindre, d'une partie arrière d'arrêt connectée au réservoir et d'un levier rotatif. Le procédé de commande peut être accompli par le fonctionnement du robinet rotatif de renvoi d'huile en une seule opération.
PCT/CN1999/000008 1998-01-22 1999-01-21 Dispositif hydraulique et automatique de soulevement d'une charge et procede associe WO1999037574A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU20448/99A AU2044899A (en) 1998-01-22 1999-01-21 A hydraulic, automatic device for raising a load and a method thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN98112325.2 1998-01-22
CN98112325A CN1063728C (zh) 1998-01-22 1998-01-22 液压顶举全自动控制装置

Publications (1)

Publication Number Publication Date
WO1999037574A1 true WO1999037574A1 (fr) 1999-07-29

Family

ID=5222189

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN1999/000008 WO1999037574A1 (fr) 1998-01-22 1999-01-21 Dispositif hydraulique et automatique de soulevement d'une charge et procede associe

Country Status (3)

Country Link
CN (1) CN1063728C (fr)
AU (1) AU2044899A (fr)
WO (1) WO1999037574A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101113597B (zh) * 2007-07-27 2010-12-08 浙江工业大学 原动机输出扭矩均衡控制装置
CN103741718B (zh) * 2013-11-29 2016-01-20 中交第二航务工程局有限公司 一种大型构件顶推蓄能机构及顶推系统
WO2018119775A1 (fr) * 2016-12-28 2018-07-05 白保忠 Soupape de séquence de rétablissement et son procédé de commande séquentielle
DE102017208029A1 (de) * 2017-05-12 2018-11-15 Robert Bosch Gmbh Variabler einstellbarer Störfalldämpfer für ein Hubwerk und Hubwerk
CN107639592A (zh) * 2017-08-31 2018-01-30 安徽信息工程学院 弹簧夹取器
CN109626250B (zh) * 2018-12-14 2020-08-11 常熟理工学院 一种可二次省力的千斤顶液压系统
CN110092252A (zh) * 2019-04-19 2019-08-06 辽宁工程技术大学 一种油压式电梯缓冲器性能综合检测系统

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4631919A (en) * 1984-07-05 1986-12-30 Challenge-Cook Bros., Incorporated Hydraulic system for vehicle auxiliary axle
EP0349067A1 (fr) * 1988-06-28 1990-01-03 Applied Power Inc. Unité d'actionnement hydraulique, particulièrement pour lever une charge, comme un lit d'hôpital

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4631919A (en) * 1984-07-05 1986-12-30 Challenge-Cook Bros., Incorporated Hydraulic system for vehicle auxiliary axle
EP0349067A1 (fr) * 1988-06-28 1990-01-03 Applied Power Inc. Unité d'actionnement hydraulique, particulièrement pour lever une charge, comme un lit d'hôpital

Also Published As

Publication number Publication date
CN1063728C (zh) 2001-03-28
AU2044899A (en) 1999-08-09
CN1215693A (zh) 1999-05-05

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