WO1990010117A1 - Unite de commande pour le corps superieur pivotant d'une pelle hydraulique - Google Patents

Unite de commande pour le corps superieur pivotant d'une pelle hydraulique Download PDF

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Publication number
WO1990010117A1
WO1990010117A1 PCT/JP1990/000184 JP9000184W WO9010117A1 WO 1990010117 A1 WO1990010117 A1 WO 1990010117A1 JP 9000184 W JP9000184 W JP 9000184W WO 9010117 A1 WO9010117 A1 WO 9010117A1
Authority
WO
WIPO (PCT)
Prior art keywords
controlled
pressure
drive motor
controller
valve
Prior art date
Application number
PCT/JP1990/000184
Other languages
English (en)
Japanese (ja)
Inventor
Yukio Moriya
Takumi Onoda
Fugitoshi Takamura
Toshio Yokoyama
Original Assignee
Kabushiki Kaisha Komatsu Seisakusho
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 Kabushiki Kaisha Komatsu Seisakusho filed Critical Kabushiki Kaisha Komatsu Seisakusho
Publication of WO1990010117A1 publication Critical patent/WO1990010117A1/fr

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/123—Drives or control devices specially adapted therefor
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/08—Superstructures; Supports for superstructures
    • E02F9/10—Supports for movable superstructures mounted on travelling or walking gears or on other superstructures
    • E02F9/12—Slewing or traversing gears
    • E02F9/121—Turntables, i.e. structure rotatable about 360°
    • E02F9/128—Braking systems

Definitions

  • the outlet line is formed through a controlled proportional solenoid valve 8, and is connected to the outlet port of the meter port valve 4. It is formed from an upstream side to a downstream side of the port valve 4 through an orifice 9 and a proportional solenoid valve 8a controlled by the controller. Yes.
  • the outlet pipe of the meter-port valve 12 is connected to the outlet pipe from the upstream side to the downstream side of the meter-port valve 12. It is formed via a proportional solenoid valve 14 controlled by a reference 13 and a controller 7, and the meter port valve 15 is formed through the proportional solenoid valve 14.
  • the pilot pipe is connected to the orifice 16 and the controller 7 from the upstream side to the downstream side of the meter port valve 15. It is formed via a more controlled proportional solenoid valve 14a.
  • the turning speed signal is proportionally transmitted from the control ⁇ -ra 7 according to the manipulated value of the electric reno'-17.
  • a pilot flow of oil amount corresponding to the signal is output from the upstream side of the meter port valve 2.
  • the differential pressure corresponding to the pilot flow is generated between the upstream and downstream of the meteor port valve 2 by the orifice 6, and this causes The opening of the meter-in poppet valve 2 is determined.
  • the amount of oil passing through the meter port valve 2 is determined according to this opening.
  • a pilot flow having an oil amount corresponding to the signal is generated between the upstream and downstream of the meter port valve 4. Therefore, The above-mentioned notch is placed between the upstream and downstream of the meter-out port valve 4 by means of the disc 9.
  • a differential pressure corresponding to the flow of the pilot flow is generated, and this determines the opening of the meter port valve 4.
  • the amount of oil passing through the meter port valve 4 is determined according to this opening.
  • the right turning speed of the drive motor 3 depends on the amount of oil passing through the meter port valve 2 and the amount of oil passing through the meter port valve 4. Is determined according to the amount of oil to be supplied.
  • the turning speed signal from controller 7 is proportional to solenoid valves 14 and 14 according to the operation amount of electric lever 17.
  • the bypass flow of the oil amount corresponding to the signal is output from the upstream side to the downstream side of the met-port valve 12.
  • the left turning speed of the upper turning body driving motor 3 is determined in the same manner as in the case of the right turning surface.
  • a signal corresponding to the signal output to the solenoids A and B is also output from the controller 7 to the discharge amount control device la of the hydraulic pump 1. Because the hydraulic pump 1 is forced, the amount of oil passing through the meta-port valves 2, 12 and the meta-port valves 4, 15 Is controlled so as to be a discharge amount corresponding to the discharge amount.
  • the present invention enables smooth control of the upper-part turning body driving motor 3 even during acceleration / deceleration, and many operators do not. It is an object of the present invention to provide a control device for an upper turning body in a hydraulic excavator capable of easily controlling a turning surface without requiring skill of the operator.
  • the control device of the upper turning body is provided with a discharge pipe of the hydraulic pump and an inlet of the upper turning body driving motor. Connected via a meter port valve whose valve opening is controlled by a proportional solenoid valve controlled by a controller, and the output of the drive motor A return pipe to the mouth and tank is a meter-to-pocket valve whose valve opening is controlled by a proportional solenoid valve controlled by the controller. Connected via In a pneumatic-hydraulic circuit, a pair of pressure control valves controlled by the above-mentioned control ⁇ -ra together with these proportional solenoid valves are respectively connected to the discharge line and the return line.
  • the inlet and outlet pressures of the drive motor are controlled when the drive motor is rotated clockwise.
  • one of the pressure control valves increases the driving pressure of the upper rotary body driving motor in response to the high speed signal of the driving motor output from the controller.
  • the other pressure control valve responds to the braking pressure of the driving motor in response to the deceleration signal of the driving motor output from the control ⁇ -ra.
  • the opening of the discharge line of the hydraulic pump and the outlet of the upper rotary body driving motor are controlled by a proportional solenoid valve controlled by a controller.
  • a proportional solenoid valve Connected via a meter port valve, the inlet of the drive motor and the return line to the tank are controlled by the controller described above.
  • the valve is controlled by a proportional solenoid valve.
  • these proportional solenoid valves and A pair of pressure control valves both controlled by a controller, are connected to the return pipe and the discharge pipe, respectively, and the drive motor is turned to the left (reverse). In some cases, the inlet pressure and the outlet pressure of the drive motor are controlled.
  • Acceleration occurs when the upper turning body drive motor is turned right or left by the signal from the controller.
  • the driving pressure or the braking pressure of the driving line of the driving motor increases, but the value is controlled to a predetermined value by the pressure control valve.
  • these pressures can be prevented from rising sharply, and the upper-slewing body drive motor can be smoothly controlled.
  • the driving pressure or braking pressure of the upper turning body is controlled according to the amount of acceleration or deceleration, the amount of operation of the upper turning body by the operator is uniform. As a result, much skill is not required. Brief description of the drawing
  • FIG. 1 is an electrohydraulic circuit diagram showing an embodiment of the present invention
  • FIG. 2 is a diagram showing the relationship between the opening degree of the port valve and the drive and the pressure or the braking pressure in FIG.
  • FIG. 3 and FIG. 3 are electrohydraulic circuit diagrams showing a conventional technique.
  • BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described in detail with reference to FIG. 1 to FIG.
  • FIG. 1 is an electro-hydraulic surface diagram showing an embodiment of the present invention, and the same components as those of the prior art electro-hydraulic surface diagram shown in FIG. 3 are the same. The description is omitted with the same sign.
  • FIG. 1 is an electrohydraulic surface diagram showing an embodiment of the present invention, and the same components as those of the prior art electro-hydraulic surface diagram shown in FIG. 3 are the same. The description is omitted with the same sign.
  • FIG. 1 is an electrohydraulic surface diagram showing an embodiment of the present invention, and the same components as
  • an acceleration signal corresponding to a desired turning speed of the driving motor 3 is controlled by a control signal.
  • the output from the controller 7 to the solenoid A for the proportional solenoid valve 8 of the metering port valve 2 as well as the output from the solenoid valve A as shown in FIG. A signal that becomes the set pressure corresponding to the opening signal of the cut valve is output to the solenoid C of the pressure control valve 10.
  • the drive pressure of the drive motor 3 increases due to the inertia of the upper turning body, but the hydraulic pressure is set to the meter port as shown in FIG.
  • the hydraulic pressure is set so as to gradually decrease in accordance with the opening of the meter port valve 9. As a result, it is possible to prevent a sudden increase in the braking pressure of the driving motor 3. In addition, since the operation amount of the upper turning body is also uniform, the turning operation of the operator becomes easier.
  • the present invention is used for a hydraulic drive device of an upper turning body provided with a cab, a working machine, and the like in a hydraulic excavator, and particularly accelerates or accelerates an upper turning body having a large inertia. This is useful as a control device that prevents sudden rise in pressure in the hydraulic pipeline

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

Unité de commande pour le corps supérieur pivotant d'une pelle hydraulique utilisée pour empêcher une augmentation soudaine de la pression dans une ligne hydraulique et pour obtenir une commande de pivotemment sans à-coups lorsque le corps supérieur pivotant pourvu d'une cabine de conducteur et d'une machine de travail et présentant une inertie importante est accéléré ou décéléré. A cet effet, des soupapes de régulation de pression (10), (11) commandées en même temps que des soupapes proportionnelles à solénoïde (8), (8a) par un organe de commande (7) sont reliées à une ligne de décharge et à une ligne de retour d'une pompe hydraulique (1) de manière à commander une pression d'entrée et une pression de sortie d'un moteur (3) d'entraînement du corps supérieur pivotant, lors de la rotation du moteur. En particulier, l'une des soupapes de régulation de pression (10) commande et accroît la pression d'entraînement du moteur d'entraînement (3) en fonction d'un signal d'augmentation de vitesse émis par l'organe de commande (7), et l'autre soupape de régulation de pression (11) commande et réduit la pression de freinage du moteur d'entraînement (3) en fonction d'un signal de diminution de vitesse émis par l'organe de commande (7).
PCT/JP1990/000184 1989-02-28 1990-02-16 Unite de commande pour le corps superieur pivotant d'une pelle hydraulique WO1990010117A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP4698489A JPH02225730A (ja) 1989-02-28 1989-02-28 油圧掘削機械における上部旋回体の制御装置
JP1/46984 1989-02-28

Publications (1)

Publication Number Publication Date
WO1990010117A1 true WO1990010117A1 (fr) 1990-09-07

Family

ID=12762482

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1990/000184 WO1990010117A1 (fr) 1989-02-28 1990-02-16 Unite de commande pour le corps superieur pivotant d'une pelle hydraulique

Country Status (3)

Country Link
EP (1) EP0461258A4 (fr)
JP (1) JPH02225730A (fr)
WO (1) WO1990010117A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR960023541A (ko) * 1994-12-08 1996-07-20 안자키 사토루 유압 액츄에이터의 반전방지장치
US6052636A (en) * 1997-08-04 2000-04-18 Caterpillar Inc. Apparatus and method for positioning an excavator housing
DE69911674T2 (de) * 1998-03-11 2004-07-01 Poclain Hydraulics Industrie Ventileinrichtung für einen hydraulischen Motor zum Antreiben einer Masse grossens Trägheitsvermögens

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126829A (ja) * 1983-01-10 1984-07-21 Hitachi Constr Mach Co Ltd 油圧シヨベルの油圧制御装置
JPS62129425A (ja) * 1985-11-29 1987-06-11 Komatsu Ltd 建設機械の油圧回路
JPS62176258U (fr) * 1986-04-30 1987-11-09

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126829A (ja) * 1983-01-10 1984-07-21 Hitachi Constr Mach Co Ltd 油圧シヨベルの油圧制御装置
JPS62129425A (ja) * 1985-11-29 1987-06-11 Komatsu Ltd 建設機械の油圧回路
JPS62176258U (fr) * 1986-04-30 1987-11-09

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0461258A4 *

Also Published As

Publication number Publication date
JPH02225730A (ja) 1990-09-07
EP0461258A4 (en) 1993-03-31
EP0461258A1 (fr) 1991-12-18

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