WO1992003327A1 - Device for controlling hydraulic steering clutch and brake - Google Patents

Device for controlling hydraulic steering clutch and brake Download PDF

Info

Publication number
WO1992003327A1
WO1992003327A1 PCT/JP1991/001008 JP9101008W WO9203327A1 WO 1992003327 A1 WO1992003327 A1 WO 1992003327A1 JP 9101008 W JP9101008 W JP 9101008W WO 9203327 A1 WO9203327 A1 WO 9203327A1
Authority
WO
WIPO (PCT)
Prior art keywords
brake
steering
sets
steering clutch
hydraulic
Prior art date
Application number
PCT/JP1991/001008
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
Haruhisa Yamamoto
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
Priority to US07/975,559 priority Critical patent/US5375686A/en
Publication of WO1992003327A1 publication Critical patent/WO1992003327A1/ja

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D11/00—Steering non-deflectable wheels; Steering endless tracks or the like
    • B62D11/02—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides
    • B62D11/06—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source
    • B62D11/08—Steering non-deflectable wheels; Steering endless tracks or the like by differentially driving ground-engaging elements on opposite vehicle sides by means of a single main power source using brakes or clutches as main steering-effecting means

Definitions

  • the present invention relates to a control device for a hydraulic steering clutch used in a tracked vehicle such as a bulldozer. Back technique
  • Fig. 4 illustrates the structure of a conventional tracked bulldozer hydraulic steering clutch 'brake.
  • a pair of left and right steering clamps and brakes are mounted on the horizontal axis 9, but only the left side is illustrated in this figure.
  • the steering clutch ⁇ 0 is in the “on” position, the brake 11 is in the “off” state, and the power from the input shaft 12 is supplied from the horizontal shaft 9 to the left steering clutch 1 It is transmitted to the left output shaft 13 via 0 and drives the starting wheel 14.
  • An object of the present invention is to solve the conventional problem and to provide a hydraulic steering clutch / brake control device which is simple in construction and can be operated with a mono lever.
  • the hydraulic steering clutch and brake control device according to the present invention is composed of one steering lever, four sets of proportional pressure control valves operated by the steering lever, and these proportional levers.
  • the structure consists of left and right steering crack bistons connected to each output port of the pressure control valve by piping, and brake cylinders on both left and right sides.
  • These four sets of valves consist of two sets of proportional pressure control valves for steering clutches, which have an early hydraulic rise time, and two sets of proportional pressure control valves for brakes, which have a later hydraulic rise time. .
  • FIG. 1 is an explanatory view of a main part of a steering clutch / brake control device according to the present invention.
  • FIG. 2 is a plan view of a proportional pressure control valve.
  • FIG. 4 is an explanatory view of a conventional steering latch / brake control device. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is a steering clutches' explanatory view of a brake control apparatus main unit
  • FIG. 2 is a plan view showing the arrangement of the proportional pressure control valve c
  • the four sets of proportional pressure control valves],, S, and 4 are arranged as shown in Fig. 2 and connected to one steering lever 5, and each input port is connected to a hydraulic pump 6. It has been.
  • the output boat is connected to left and right clutch pistons 7, 7a and brake cylinders 8, 8a by piping.
  • the four sets of proportional pressure control valves 1, 2, .3, and 4 are two sets of proportional pressure control valves 1 and 4 for steering clutches and two sets of proportional pressure control valves 2 and It is divided into three. Then, as shown in FIG. 3, the hydraulic pressure rise timing of the steering clutch proportional pressure control valves 1 and 4 is earlier than the hydraulic pressure rise timing of the brake proportional pressure control valves 2 and 3.
  • the valve structure has characteristics.
  • the proportional pressure control valve is usually used to control the pilot pressure of the main control valve.
  • an actuator such as a direct piston is used. Is controlling. Therefore, when the hydraulic pressure becomes insufficient due to the internal loss of the proportional pressure control valve or the like, the set pressure of the hydraulic pump 6 is increased to compensate.
  • control device having such a structure, since a small proportional pressure control valve is used, a mono-lever one-way type can be easily adopted, and the steerability is improved.
  • the actuator can be directly driven by the proportional pressure control valve without using the main control valve, and the intermediate links can be omitted.
  • the present invention is useful as a control device of a hydraulic steering clutch used for a tracked vehicle such as a bulldozer, and is particularly useful as a control device that has a simple structure and can be operated even with a single lever. .

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Non-Deflectable Wheels, Steering Of Trailers, Or Other Steering (AREA)
PCT/JP1991/001008 1990-08-23 1991-07-26 Device for controlling hydraulic steering clutch and brake WO1992003327A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US07/975,559 US5375686A (en) 1990-08-23 1991-07-26 Device for controlling hydraulic steering clutch and brake

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1990088293U JPH0445179U (US07943777-20110517-C00090.png) 1990-08-23 1990-08-23
JP2/88293U 1990-08-23

Publications (1)

Publication Number Publication Date
WO1992003327A1 true WO1992003327A1 (en) 1992-03-05

Family

ID=13938870

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1991/001008 WO1992003327A1 (en) 1990-08-23 1991-07-26 Device for controlling hydraulic steering clutch and brake

Country Status (3)

Country Link
US (1) US5375686A (US07943777-20110517-C00090.png)
JP (1) JPH0445179U (US07943777-20110517-C00090.png)
WO (1) WO1992003327A1 (US07943777-20110517-C00090.png)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0570585A1 (en) * 1991-02-07 1993-11-24 Kabushiki Kaisha Komatsu Seisakusho Steering control system by pilot pressure
EP1983053A2 (en) 1994-07-20 2008-10-22 Neurotech USA, Inc. Cell distribution control for cells within bioartifical organs
US7820195B2 (en) 2005-12-30 2010-10-26 Neurotech Usa, Inc. Micronized device for the delivery of biologically active molecules and methods of use thereof
WO2012075184A2 (en) 2010-12-02 2012-06-07 Neurotech Usa, Inc. Cell lines that secrete anti-angiogenic antibody-scaffolds and soluble receptors and uses thereof
US10195140B2 (en) 2015-05-27 2019-02-05 Neurotech Usa, Inc. Use of encapsulated cell therapy for treatment of ophthalmic disorders

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3321274B2 (ja) * 1993-12-24 2002-09-03 株式会社小松製作所 作業機械の遠隔操作制御装置
JP4023933B2 (ja) * 1998-12-08 2007-12-19 株式会社小松製作所 装軌式建設車両のステアリング制御装置
US6216806B1 (en) * 1999-07-07 2001-04-17 Caterpillar Inc. Supplement steering system
US6523636B2 (en) * 2000-02-22 2003-02-25 Probir Chatterjea & Associates, Inc. Crawler motion control system
JP6584271B2 (ja) * 2015-10-09 2019-10-02 株式会社小松製作所 ブルドーザ
CN114508553A (zh) * 2022-01-24 2022-05-17 龙岩市万通机械有限公司 一种轮式挖掘机离合装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62110075U (US07943777-20110517-C00090.png) * 1985-12-28 1987-07-14

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2438389A (en) * 1941-10-20 1948-03-23 Edge Stanley Howard Hydraulic selector valve mechanism for hydraulic servomotors
US2615542A (en) * 1947-07-28 1952-10-28 Letourneau Inc Clutch and brake for steering vehicles
US2817427A (en) * 1955-11-14 1957-12-24 Letourneau Westinghouse Compan Control system
US2975851A (en) * 1958-08-18 1961-03-21 Deere & Co Fluid pressure control system
US3460645A (en) * 1967-11-06 1969-08-12 American Hoist & Derrick Co Safety brake system
US3747472A (en) * 1971-12-17 1973-07-24 Applied Power Inc Flexible cable hydraulic control means
US3830438A (en) * 1972-01-20 1974-08-20 Hesston Corp Machine for feeding materials from a stack
JPS5151832A (en) * 1974-10-31 1976-05-07 Mitsui Miike Machinery Co Ltd Sokishikisagyoshano seidosochi
JPS5851511A (ja) * 1981-09-22 1983-03-26 Mitsubishi Electric Corp 半導体装置の電極形成方法
JPH06100284B2 (ja) * 1985-11-06 1994-12-12 ユ−サンガスケツト株式会社 シリンダ・ヘツド・ガスケツト
US5235811A (en) * 1990-05-29 1993-08-17 Kubota Corporation Control change system for a hydraulic work vehicle

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62110075U (US07943777-20110517-C00090.png) * 1985-12-28 1987-07-14

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0570585A1 (en) * 1991-02-07 1993-11-24 Kabushiki Kaisha Komatsu Seisakusho Steering control system by pilot pressure
EP0570585A4 (US07943777-20110517-C00090.png) * 1991-02-07 1994-04-27 Kabushiki Kaisha Komatsu Seisakusho
EP1983053A2 (en) 1994-07-20 2008-10-22 Neurotech USA, Inc. Cell distribution control for cells within bioartifical organs
US7820195B2 (en) 2005-12-30 2010-10-26 Neurotech Usa, Inc. Micronized device for the delivery of biologically active molecules and methods of use thereof
US9265814B2 (en) 2005-12-30 2016-02-23 Neurotech Usa, Inc. Micronized device for the delivery of biologically active molecules and methods of use thereof
WO2012075184A2 (en) 2010-12-02 2012-06-07 Neurotech Usa, Inc. Cell lines that secrete anti-angiogenic antibody-scaffolds and soluble receptors and uses thereof
US10195140B2 (en) 2015-05-27 2019-02-05 Neurotech Usa, Inc. Use of encapsulated cell therapy for treatment of ophthalmic disorders
US10456356B2 (en) 2015-05-27 2019-10-29 Neurotech Usa, Inc. Use of encapsulated cell therapy for treatment of ophthalmic disorders
EP3662923A1 (en) 2015-05-27 2020-06-10 Neurotech USA, Inc. Use of encapsulated cell therapy for treatment of ophthalmic disorders
US11207266B2 (en) 2015-05-27 2021-12-28 Neurotech, USA, Inc. Use of encapsulated cell therapy for treatment of ophthalmic disorders

Also Published As

Publication number Publication date
US5375686A (en) 1994-12-27
JPH0445179U (US07943777-20110517-C00090.png) 1992-04-16

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