WO2004102010A1 - Verin electrique multiplicateur de pression hydraulique - Google Patents

Verin electrique multiplicateur de pression hydraulique Download PDF

Info

Publication number
WO2004102010A1
WO2004102010A1 PCT/CN2003/000701 CN0300701W WO2004102010A1 WO 2004102010 A1 WO2004102010 A1 WO 2004102010A1 CN 0300701 W CN0300701 W CN 0300701W WO 2004102010 A1 WO2004102010 A1 WO 2004102010A1
Authority
WO
WIPO (PCT)
Prior art keywords
cylinder
booster
piston
hydraulic
piston rod
Prior art date
Application number
PCT/CN2003/000701
Other languages
English (en)
Chinese (zh)
Inventor
Rang Jiao
Ju Jiao
Original Assignee
Rang Jiao
Ju Jiao
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 Rang Jiao, Ju Jiao filed Critical Rang Jiao
Priority to AU2003255126A priority Critical patent/AU2003255126A1/en
Publication of WO2004102010A1 publication Critical patent/WO2004102010A1/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
    • F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
    • F15B11/02—Systems essentially incorporating special features for controlling the speed or actuating force of an output member
    • F15B11/028—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force
    • F15B11/032—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters
    • F15B11/0325—Systems essentially incorporating special features for controlling the speed or actuating force of an output member for controlling the actuating force by means of fluid-pressure converters the fluid-pressure converter increasing the working force after an approach stroke

Definitions

  • the invention belongs to the technical field of electric, mechanical and hydraulic integrated transmission, and particularly relates to a booster cylinder, which is an output of the electric cylinder that is tens of times higher than the original driving force by using the Pascal liquid booster principle. Pressure device.
  • the object of the present invention is to provide a hydraulic booster electric cylinder.
  • the motor drag screw provided by the present invention directly drives the piston to use the hydraulic booster boosting scheme It is not necessary to have a hydraulic system or an air source pumping station, and only the power supply can be used to directly increase the output force. It combines the advantages of electric drive and hydraulic booster in one, simple installation, easy to use, low cost and low noise.
  • the hydraulic booster electric cylinder includes a driving motor, a reducer, a hydraulic cylinder and an accumulator, and a lead screw and a reducer.
  • the output shaft is connected and driven by a drive motor through a reducer.
  • the hydraulic cylinder is composed of a series working cylinder and a booster booster cylinder.
  • the work cylinder and the booster booster are installed concentrically.
  • Piston 5 The piston rod of the booster piston is hollow.
  • the lead screw is threaded into the piston rod of the booster piston through the nut on the booster piston.
  • the booster piston rod extends into the working cylinder;
  • the piston rod of the piston has an inner hole, and the booster piston rod can extend into the inner hole of the piston rod of the cylinder and can move in the inner hole of the piston rod of the cylinder.
  • the rear cavity of the pressure increasing cylinder and the accumulator communicate with each other, and the rear cavity of the working cylinder communicates with the front cavity of the supercharging speed increasing cylinder through an oil path.
  • the drive motor drives the lead screw to rotate through the reducer.
  • the lead screw makes the piston of the supercharged speed increasing rainbow move forward or backward linearly.
  • the oil in the supercharging and increasing speed cylinder enters the working cylinder to push the piston of the working cylinder back and forth.
  • the two pistons move synchronously to achieve the purpose of speed increase.
  • the oil in the front cavity of the working cylinder is returned to the cavity through the oil passage to increase the oil in the rear cavity after the accelerating and accelerating, and the accumulator supplements the phase difference oil caused by the volume difference between the piston rod and the screw of the working cylinder.
  • the piston rod of the pressure-increasing and speed-increasing rainbow may be a circular tube or an oval tube, or a spline tube, and the front end of the tube is blocked by a nut.
  • a nut at the front end of the piston rod of the supercharging and increasing speed can be punched with a through hole, correspondingly in the wire.
  • a sealing element such as a sealing ring is installed at the front end of the lever to obtain 70 times the output pressure.
  • the nut on the booster piston can be a ball screw nut or a ladder screw nut, and the nut is fixed on the piston by screws.
  • the accumulator can be installed and fixed on the cylinder of the hydraulic booster electric cylinder.
  • the cylinder of the supercharging and speed-increasing cylinder can be composed of an outer cylinder and a concentric sleeve.
  • the accumulator is composed of an inner cylinder tube in an outer cylinder tube, and the accumulator is composed of a nitrogen-filled ring-shaped leather jacket located in an annular gap between the outer cylinder tube and the inner cylinder tube.
  • a larger boosting factor of 5 can also further improve the hydraulic boosting electric action of the present invention as follows.
  • An induction valve is installed in the communication oil path between the front cavity of the booster cylinder and the rear cavity of the working cylinder.
  • the front cavity of the booster cylinder is connected to the rear oil chamber of the booster cylinder and the front oil chamber of the working cylinder through an oil circuit and a function switching valve.
  • a pressure valve is connected to the above-mentioned Function switching valve and induction valve are connected.
  • the oil in the booster speed-up cylinder enters the cavity of the working cylinder through the oil circuit and the induction valve to push the piston rod of the working cylinder.
  • the force output by the piston rod of the cylinder is about the force of the driving nut of the lead screw, and the speeds of the two are also basically the same or similar; when fast-forwarding to the working position, the oil pressure in the cylinder rises due to the larger working load, and the stroke At any position, the oil pressure increases when the load changes.
  • the pressure valve switches the induction and function switching valve under the effect of the induction pressure to cut off the oil circuit between the front cavity of the booster cylinder and the back cavity of the working rainbow.
  • the switching valve conducts the oil passages of the front cavity of the working cylinder, the rear cavity of the booster cylinder and the front cavity of the booster cylinder, so that the oil in the front cavity of the booster cylinder is returned to the rear chamber.
  • the cylinder enters the boost phase. Because the oil passage of the cavity is closed after the piston of the working cylinder, the booster piston rod is continuously fed forward by the screw, which makes the dead volume of the cavity increase.
  • the working cylinder The piston rod increases the output force and overcomes the load, so that the piston continues to feed forward until the pressure in the cylinder reaches the set value set by the user according to the work needs or the rear piston advances to the end of the stroke.
  • the size of the boosting stroke depends on the volume of the rear piston rod entering the front cavity.
  • the hydraulic booster electric cylinder of the present invention has the following characteristics:
  • the present invention uses a motor to directly drive the lead screw piston in a tandem sleeve design, and then the piston pushes the oil to generate a boosting effect to complete the fast forward, fast reverse stroke and automatically adapt to the load and convert it into a hydraulic boost stroke .
  • the entire working process does not need to rely on external signal control.
  • the automatic load sensing conversion integrates the advantages of electric drive and hydraulic booster, which is the unique creation of this utility model.
  • FIG. 1 is a structural diagram of an embodiment of a hydraulic booster electric cylinder of the present invention
  • FIG. 2 is a structural diagram of another modification of the hydraulic booster electric cylinder of the present invention
  • FIG. 3 is a hydraulic booster shown in FIG. 2 Schematic of electric cylinder.
  • the body of the hydraulic booster electric cylinder in this embodiment is composed of a working cylinder barrel 13, a booster cylinder, a middle seat 11, a front cylinder head 17 and a rear seat 3.
  • the working cylinder barrel 13 It is installed concentrically with the booster booster cylinder.
  • the working cylinder barrel 13 and the booster booster cylinder tube are connected in series through the front cylinder head 17, the rear seat 3 and the tie rod 18.
  • the booster cylinder is composed of a concentric inner cylinder 5 and an outer cylinder 8.
  • an accumulator 6 composed of a nitrogen gas-filled gas cylinder 7.
  • the piston rod 15 of the working cylinder piston 14 in the working cylinder has an internal hole 16, forming a hollow sleeve piston rod.
  • the piston pestle 15 passes through the front cylinder head 17, and the sealing ring 19 is sealed between the piston rod 15 and the front hood 17. .
  • the center of the piston 25 in the booster cylinder is a trapezoidal screw nut 26, and the nut 26 is fixed to the booster and booster rainbow piston 25 by screws.
  • the piston rod 9 of the supercharging and speed increasing piston 25 is a circular tube, which is connected and fixed to the piston 25 by a nut. The end of the piston rod 9 is sealed with a bolt 29 to form a sleeve piston.
  • the piston rod 9 of the supercharging and speed increasing rainbow passes through the intermediate seat 11 and is inserted into the inner hole 16 of the piston rod 15 of the working cylinder and can reciprocate linearly in the inner hole 16.
  • An oil hole 12 is formed in the middle seat 11 to connect the front cavity 24 of the booster cylinder and the rear cavity 23 of the working cylinder so that the hydraulic oil in the front cavity 24 of the booster cylinder can enter the rear cavity of the working cylinder ⁇ 23.
  • the front cavity 21 of the working cylinder communicates with the rear cavity 27 of the booster cylinder through the joint 20, the oil pipe 22, and the oil hole 28.
  • the accumulator 6 communicates with the rear cavity 27 of the booster cylinder through the oil circuit. To replenish the required hydraulic fluid.
  • the lead screw 4 is inserted into the nut 26 and the piston rod 9 of the booster cylinder.
  • a seal ring 10 is mounted at the front end of the lead screw 4.
  • the motor 1 drives the lead screw 4 through a speed reducer 2.
  • the motor 1 drives the lead screw 3 to rotate the lead screw 3 through the reducer 2, and the lead screw 3 pushes the piston 25 forward or backward through the piston nut 26.
  • the piston 25 squeezes the hydraulic oil in the front cavity 24 of the booster cylinder through the oil hole 12 in the middle seat 11 and enters the rear cavity 23 of the working cylinder, pushing the working cylinder piston 14 forward. Achieve speed increase and boost pressure.
  • the hydraulic oil in the front cavity 21 of the working cylinder enters the rear cavity 27 of the booster cylinder through the oil pipe 22 to supplement the vacuum caused by the front of the piston 25. Since the diameter of the screw 3 is smaller than the diameter of the piston rod 15 of the working cylinder, excess hydraulic oil will enter the accumulator 6. In this way, the boost ratio is not high, but the entire stroke achieves the purpose of increasing the output force.
  • the electric motor 1 drives the screw 3 to perform two-stage torque amplification and one-stage hydraulic amplification. In this working mode, the accumulator 6 can be used to hold pressure for a long time. During the hold time, because the reducer 2 and the like have a self-locking function, the motor 1 can be powered off. A lot of energy consumption.
  • the rainbow body of the hydraulic booster electric cylinder in this embodiment is composed of a working cylinder barrel 13, a booster cylinder 32, a middle seat 11, a front cylinder head 17 and a rear seat 3.
  • the cylinder 13 is installed concentrically with the supercharged speed increasing rainbow tube 32, and the working cylinder 13 and the supercharged speed increasing rainbow tube 32 are connected in series through the front cylinder head 17, the rear seat 3 and the tie rod 18.
  • the piston rod 15 of the piston 14 in the working cylinder has an inner hole to form a hollow piston rod.
  • the piston pestle 15 passes through the front cylinder head 17, and a sealing ring 19 is sealed between the piston 15 and the front cylinder head 17.
  • the piston 14 has a front pressure plate 36.
  • the center of the piston in the booster cylinder is a ball screw nut 26, and the nut 26 is fixed to the piston by a screw.
  • the piston rod 9 of the supercharging and speed increasing piston has an inner hole, and the piston rod 9 is fixedly connected to the piston through a nut 41.
  • the piston rod 9 of the supercharged and increased speed rainbow passes through
  • the intermediate seat 11 is inserted into the inner hole of the piston rod 15 of the working cylinder and can make a reciprocating linear motion in the inner hole.
  • There is an oil hole in the middle seat 11 to connect the front cavity of the booster booster and the rear cavity of the working cylinder, so that the hydraulic oil in the front cavity of the booster booster cylinder can enter the rear cavity of the work cylinder.
  • An induction valve 34 is installed on the oil circuit to switch the working mode.
  • the intermediate seat 11 also has an intermediate pressure plate 40.
  • the front cavity of the working cylinder is connected with the rear cavity and the front cavity of the booster cylinder through the joint 20, the three-way pipe 38 and the function switching valve 39.
  • the accumulator 6 The oil passage communicates with the rear cavity of the booster cylinder, and the accumulator 6 is installed outside the cylinder through the accumulator seats 31 and 33.
  • the lead screw 4 is connected to the output shaft of the reducer 2 through a key 48.
  • the lead screw 4 is inserted into the nut 26 and the piston rod of the booster cylinder.
  • a sealing ring 10 is installed at the front end of the lead screw 4.
  • the motor 1 drives the lead screw 4 through a speed reducer 2.
  • the working principle of the hydraulic booster electric cylinder in this embodiment is shown as follows:
  • the motor 1 drives the lead screw 4 to rotate the lead screw 4 through the reducer 2, and the lead screw 4 rotates through the pressure increasing and increasing piston nut 26
  • the moment is amplified and converted into the driving force for the piston, causing the piston to slide forward.
  • the hydraulic oil in the front cavity of the booster and booster piston is pressed into the rear cavity of the working cymbal to move the cylinder piston 15 forward. This stage is the speed increase.
  • the lead screw 4 drives the supercharged and increased speed rainbow piston to move backward, and the oil in the cavity behind the supercharged and increased speed cylinder flows back to the front cavity of the working cylinder under the squeeze of the piston.
  • the working cylinder piston is moved backward under the pressure of the oil.
  • the induction pressure valve has returned, and the oil in the cavity behind the working cylinder flows back to the front cavity of the booster cylinder through the induction valve.
  • This stroke is a fast-reverse stroke, the retraction force is the same as the output force during fast-forward, and the speed is also the same.

Abstract

La présente invention concerne un vérin électrique multiplicateur de pression hydraulique qui comprend un moteur électrique d'entraînement, un réducteur de vitesse, un rotor, un cylindre et un accumulateur. Ce vérin comprend un cylindre de travail et un cylindre multiplicateur de pression montés en série et de manière concentrique. La tige de piston du cylindre multiplicateur de pression comprend un alésage situé de manière à permettre au rotor de s'étendre au travers de celle-ci. La tige du multiplicateur de pression s'insère dans le cylindre de travail. La tige de piston du cylindre de travail comprend aussi un alésage situé de façon à permettre à la tige du multiplicateur de pression de s'étendre à travers celle-ci et de tourner. La chambre avant du cylindre de travail est connectée à la chambre arrière du cylindre multiplicateur de pression et à un accumulateur par huile et par valves. La chambre arrière du cylindre de travail est connectée à la chambre avant du cylindre multiplicateur de pression par huile. Ce vérin électrique multiplicateur de pression hydraulique est conçu de manière intégrale, de sorte qu'il possède une structure d'impact, une bonne stabilité et il fonctionne facilement. Par ailleurs, comparé à un vérin électrique de même taille, le vérin de l'invention peut produire des puissances décadiques multiples. Du fait de l'effet amortisseur du dispositif hydraumatique, le choc causé à une extrémité peut être considérablement réduit.
PCT/CN2003/000701 2003-05-13 2003-08-21 Verin electrique multiplicateur de pression hydraulique WO2004102010A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2003255126A AU2003255126A1 (en) 2003-05-13 2003-08-21 A hydraulic intensifier electromotion cylinder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN03257440 2003-05-13
CN03257440.1 2003-05-13

Publications (1)

Publication Number Publication Date
WO2004102010A1 true WO2004102010A1 (fr) 2004-11-25

Family

ID=33438198

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2003/000701 WO2004102010A1 (fr) 2003-05-13 2003-08-21 Verin electrique multiplicateur de pression hydraulique

Country Status (2)

Country Link
AU (1) AU2003255126A1 (fr)
WO (1) WO2004102010A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010051913A1 (fr) * 2008-11-08 2010-05-14 Robert Bosch Gmbh Convertisseur de forces hydraulique
EP3581808A1 (fr) * 2009-01-30 2019-12-18 Fisher Controls International Llc Actionneur de piston réglable

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2175062A1 (fr) * 1972-03-06 1973-10-19 Sig Schweiz Industrieges
JPS60113801A (ja) * 1983-11-24 1985-06-20 Shinpo Kogyo Kk 油圧作動の押圧装置
US5526644A (en) * 1995-06-07 1996-06-18 Brieschke; Todd M. Oil intensifier cylinder
JPH09151903A (ja) * 1995-11-28 1997-06-10 Mitsubishi Heavy Ind Ltd 増圧ピストン式加圧試験装置
DE4345341C2 (de) * 1992-10-27 1997-10-30 Rexroth Mannesmann Gmbh Hydraulisches System für eine Umformpresse
JPH10238502A (ja) * 1997-02-27 1998-09-08 Osaka Gas Co Ltd 圧力ブースタ
DE19748758A1 (de) * 1997-11-05 1999-05-06 Techno Alpin Gmbh S R L Motorischer Stellantrieb
WO2001073298A2 (fr) * 2000-03-27 2001-10-04 Tox Pressotechnik Gmbh & Co Kg Dispositif hydraulique demultiplicateur de pression
WO2002053920A2 (fr) * 2001-01-05 2002-07-11 Reiplinger Guenter Transmetteur de pression

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2175062A1 (fr) * 1972-03-06 1973-10-19 Sig Schweiz Industrieges
JPS60113801A (ja) * 1983-11-24 1985-06-20 Shinpo Kogyo Kk 油圧作動の押圧装置
DE4345341C2 (de) * 1992-10-27 1997-10-30 Rexroth Mannesmann Gmbh Hydraulisches System für eine Umformpresse
US5526644A (en) * 1995-06-07 1996-06-18 Brieschke; Todd M. Oil intensifier cylinder
JPH09151903A (ja) * 1995-11-28 1997-06-10 Mitsubishi Heavy Ind Ltd 増圧ピストン式加圧試験装置
JPH10238502A (ja) * 1997-02-27 1998-09-08 Osaka Gas Co Ltd 圧力ブースタ
DE19748758A1 (de) * 1997-11-05 1999-05-06 Techno Alpin Gmbh S R L Motorischer Stellantrieb
WO2001073298A2 (fr) * 2000-03-27 2001-10-04 Tox Pressotechnik Gmbh & Co Kg Dispositif hydraulique demultiplicateur de pression
WO2002053920A2 (fr) * 2001-01-05 2002-07-11 Reiplinger Guenter Transmetteur de pression

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010051913A1 (fr) * 2008-11-08 2010-05-14 Robert Bosch Gmbh Convertisseur de forces hydraulique
EP3581808A1 (fr) * 2009-01-30 2019-12-18 Fisher Controls International Llc Actionneur de piston réglable

Also Published As

Publication number Publication date
AU2003255126A1 (en) 2004-12-03

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