WO1996029478A1 - Dispositif de mise a niveau pour benne de vehicules industriels - Google Patents

Dispositif de mise a niveau pour benne de vehicules industriels Download PDF

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Publication number
WO1996029478A1
WO1996029478A1 PCT/JP1995/000521 JP9500521W WO9629478A1 WO 1996029478 A1 WO1996029478 A1 WO 1996029478A1 JP 9500521 W JP9500521 W JP 9500521W WO 9629478 A1 WO9629478 A1 WO 9629478A1
Authority
WO
WIPO (PCT)
Prior art keywords
boom
bucket
cylinder
angle
stop
Prior art date
Application number
PCT/JP1995/000521
Other languages
English (en)
Japanese (ja)
Inventor
Masanori Ikari
Shoichi Kanda
Original Assignee
Komatsu Ltd.
Komatsu Mec Kabushiki Kaisha
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 Komatsu Ltd., Komatsu Mec Kabushiki Kaisha filed Critical Komatsu Ltd.
Priority to PCT/JP1995/000521 priority Critical patent/WO1996029478A1/fr
Priority to DE19581883T priority patent/DE19581883B4/de
Publication of WO1996029478A1 publication Critical patent/WO1996029478A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • E02F3/43—Control of dipper or bucket position; Control of sequence of drive operations
    • E02F3/431—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like
    • E02F3/432—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like for keeping the bucket in a predetermined position or attitude
    • E02F3/433—Control of dipper or bucket position; Control of sequence of drive operations for bucket-arms, front-end loaders, dumpers or the like for keeping the bucket in a predetermined position or attitude horizontal, e.g. self-levelling

Definitions

  • the present invention relates to a bucket leveler device for an industrial vehicle such as a Shovel Loader. Background technology
  • Japanese Patent Application No. 63-68337 Japanese Patent Application Laid-Open No. 1-18419
  • Japanese Patent Application Laid-Open No. 1-18419 Japanese Patent Application Laid-Open No. 1-18419
  • the bucket leveler of this type makes it easy to dig in after loading and unloading, so that when the bucket is lowered, the bottom of the bucket is level on the ground. In this way, the hydraulic system is automatically controlled.
  • the earth and sand contained in the bucket is discharged in a dumped state into a dump truck bed, and then discharged. If the bucket leveler device is operated with the boom stopped, the bucket will rotate faster and stop when the bucket stops. There is a problem that a strong shock occurs.
  • the purpose of the present invention is to provide a bucket leveler device for an industrial vehicle. Disclosure of the invention
  • the present invention provides a boom cylinder which is rotatable vertically in a vertical direction and a bucket cylinder which is capable of dumping and tilting.
  • a floating position detector that detects the floating position of the boom operating valve that controls the above-mentioned cylinder cylinder, and a boom lever that is held at the floating position
  • a detent mechanism a boom angle detector for detecting the rotation angle of the boom, a boom stop angle storage means in which the boom stop position is stored in advance, and the bucket cylinder. It has a solenoid valve that controls in the root direction and a socket cylinder position detector that detects the position of the socket cylinder. Turn on the solenoid valve to chill the bucket.
  • the deviation between the boom angle and the boom stop angle is calculated by the exercise means, and the solenoid valve is turned off together with the above-mentioned bucket cylinder position detector.
  • the tilt of the socket Is stopped, and the detent mechanism is released when the boom reaches the stop position.
  • FIG. 1 is a circuit diagram of the bucket leveler device
  • FIG. 2 is a flowchart showing the operation
  • FIG. 3 is a diagram showing the operation.
  • the boom cylinder provided on the bucket working machine of an industrial vehicle that does not have the required function 2 indicates the bucket cylinder, and 3 indicates the hydraulic pump.
  • the hydraulic oil discharged from the hydraulic pump 3 passes through the bucket operating valve 4 to the bucket cylinder 2, the bucket operating valve 4 and the boom operating valve 5.
  • the boom cylinder 1 is supplied via the boom cylinder 1 and the bucket operating valve 4 detects that the bucket lever 4a has reached the neutral position.
  • the bucket lever neutral detector 7 and the boom operating valve 5 have a floating position detector 8 which detects that the boom lever 5a has been operated to the floating position.
  • a bucket cylinder position detector 9 is provided near the bucket cylinder 2, and the position of the bucket cylinder 9 is determined by a signal from the bucket lever neutral detector 7. When the switch 11 is turned on by the signal of the bucket cylinder position detector 9, the switch 11 is turned on. Floating position detector 8 The signal from this is input to the operation means 12.
  • the switches 10 and 11 are interposed in series between the arithmetic means 12 and the amplifier 15 for operating the solenoid valve 14, and the solenoid valve 14 is connected to the hydraulic pump. It is interposed between 15 and Ket cylinder 2.
  • the calculation means 12 has a boom angle of 0 from the boom angle detector 18. And the boom stop angle ⁇ from the boom stop angle storage means 19. The deviation of ⁇ is input, and a control signal is output from the calculating means 12 to the detent mechanism 21 via the output device 20.
  • the detent mechanism 21 is provided near the boom lever 5a to hold the boom lever 5a at a floating position, and holds the signal together with the signal input. Is canceled.
  • the change in the boom angle due to the boom descent is read by the boom angle detector in step 100 of the flowchart shown in FIG. 1 0 1 means boom stop angle storage 1 9 Is calculated by comparing it with the stop angle stored in the memory. Is performed.
  • step 103 the deviation ⁇ 0. Is determined to be greater than 0, and if N0, the process proceeds to step 104 to release the detent mechanism, returns to step 100, and returns to step 100. Proceed to step 103.
  • step 103 proceed to step 105 to determine whether the boom lever 5a is at the floating position, and if YES, proceed to step 106 to make a bucket. It is determined whether or not the cylinder position detector 9 is turned on.
  • step 107 proceed to step 107, continue to hold the solenoid valve 14 on, return to step 100, repeat the above operation, and answer YES at step 106.
  • the solenoid valve 14 is turned off at step 108 to stop the tilting of the nozzle.
  • point a is when the boom is reno and '15a is in the floating position, and the bracket starts tilting from the dump position as shown in b. Then, at the point c, the bucket cylinder position detector 9 is turned on, and the tilt is completed.
  • the bucket operating valve 4 and the operating valve 5 are operated by means of the solenoids 4a and 5a, but the bucket is operated as shown in FIG.
  • the present invention can also be applied to a hydraulic circuit in which the operation valve 4 and the boom operation valve 5 are controlled by pilot control.
  • a shuttle valve 26 is provided in the bypass circuit of the no. And throttle control valve 25.
  • the tilt operation is performed by the bucket operation valve 4, the tilt flow rate is reduced. It depends on the discharge of the hydraulic pump.
  • a proportional decompression valve 23 is provided in the boom lowering-side bypass circuit to reduce the natural lowering speed of the boom. As a result, the baggage tilt time is secured.
  • One 7 — is indicated by.
  • the present invention only operates the boom lever to the floating position after discharging the earth and sand in the bucket to lower the boom naturally, and the bucket is automatically operated.
  • the operation is easy and the ket is tilted while the boom is descending. This can reduce the impact that occurs at times.
  • the leveler operation of the bracket is performed during the descent of the boom, so that the descent of the boom and the operation of the leveler can be performed efficiently in a short time. Hydraulic loss during descent can also be reduced.
  • FIG. 1 is a circuit diagram showing a bucket leveler device for an industrial vehicle according to a first embodiment of the present invention
  • FIG. 2 is also a circuit diagram showing a first embodiment of the present invention
  • FIG. 3 is a flowchart showing the operation of a bucket leveler device for an industrial vehicle
  • FIG. 3 is a bucket diagram of the industrial vehicle according to the first embodiment of the present invention
  • FIG. 3 is a diagram showing the operation of the beller device.
  • FIG. 4 is a circuit diagram showing a bucket leveler device for an industrial vehicle according to a second embodiment of the present invention, and FIG. Buckets for industrial vehicles

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

L'invention concerne un dispositif de mise à niveau pour benne de véhicule industriel, dont la benne, placée à l'avant d'un bras rotatif se déplaçant verticalement grâce à un vérin (1) peut-être basculée et déchargée au moyen d'un deuxième vérin (2). Le dispositif de mise à niveau se compose d'un dispositif de verrouillage (21) pour maintenir en position flottante un capteur (8) pour déterminer la position variable de la soupape de commande du vérin du bras (1), un levier de bras (5a), un détecteur (18) d'angle de rotation du bras, une mémoire (19) dans laquelle a été mémorisée une position angulaire d'arrêt de bras, une électrovanne (14) commandant le vérin de la benne (2) pour son basculement, et enfin un détecteur (9) servant à déterminer la position du vérin (2) de la benne. Le basculement de la benne s'amorce dès que l'électrovanne (14) se déclenche sous l'effet d'un signal qui lui est envoyé par le détecteur de position flottante (8). Un dispositif de calcul (12) détermine l'écart entre l'angle réel du bras et son angle d'arrêt. Le basculement de la benne est interrompu lorsque l'électrovanne (14) se ferme et que le détecteur de position du vérin de benne (9) est mis en fonction. Le mécanisme de verrouillage (21) se libère lorsque le bras atteint sa position d'arrêt. En conséquence, la benne ne peut être stoppée en position horizontale que si on laisse le bras descendre de lui-même après déchargement de la terre, ce qui rend ainsi possible une mise à niveau de la benne.
PCT/JP1995/000521 1995-03-22 1995-03-22 Dispositif de mise a niveau pour benne de vehicules industriels WO1996029478A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/JP1995/000521 WO1996029478A1 (fr) 1995-03-22 1995-03-22 Dispositif de mise a niveau pour benne de vehicules industriels
DE19581883T DE19581883B4 (de) 1995-03-22 1995-03-22 Baggereimerausrichter für ein Industriefahrzeug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP1995/000521 WO1996029478A1 (fr) 1995-03-22 1995-03-22 Dispositif de mise a niveau pour benne de vehicules industriels

Publications (1)

Publication Number Publication Date
WO1996029478A1 true WO1996029478A1 (fr) 1996-09-26

Family

ID=14125791

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1995/000521 WO1996029478A1 (fr) 1995-03-22 1995-03-22 Dispositif de mise a niveau pour benne de vehicules industriels

Country Status (2)

Country Link
DE (1) DE19581883B4 (fr)
WO (1) WO1996029478A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10354957A1 (de) * 2003-11-25 2005-06-30 Bosch Rexroth Ag Hydraulische Steueranordnung für ein mobiles Arbeitsgerät
DE102006024731B3 (de) 2006-05-26 2007-08-16 Cnh Baumaschinen Gmbh Verfahren zur lagegerechten Ausrichtung einer an einem heb- und senkbaren Hubgerüst einer Arbeitsmaschine kippbar angeordeten Arbeitausrüstung sowie Arbeitsmaschine
JP6309817B2 (ja) 2014-05-14 2018-04-11 株式会社Kcm 作業車両

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6443629A (en) * 1987-08-10 1989-02-15 Kubota Ltd Controller for work tool angle of front loader
JPH01182419A (ja) * 1988-01-18 1989-07-20 Komatsu Ltd バケットレベラ装置

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6443629A (en) * 1987-08-10 1989-02-15 Kubota Ltd Controller for work tool angle of front loader
JPH01182419A (ja) * 1988-01-18 1989-07-20 Komatsu Ltd バケットレベラ装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MICROFILM OF THE SPECIFICATION AND DRAWINGS ANNEXED TO THE WRITTEN APPLICATION OF JAPANESE UTILITY MODEL, Application No. 1030/1992 (Laid-Open No. 57039/1993) (TOYO UMPANKI CO., LTD.), (30.07.93). *

Also Published As

Publication number Publication date
DE19581883T1 (de) 1997-12-11
DE19581883B4 (de) 2004-09-02

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