JPS57107942A - Brake equipment in hydraulic circuit - Google Patents

Brake equipment in hydraulic circuit

Info

Publication number
JPS57107942A
JPS57107942A JP18411380A JP18411380A JPS57107942A JP S57107942 A JPS57107942 A JP S57107942A JP 18411380 A JP18411380 A JP 18411380A JP 18411380 A JP18411380 A JP 18411380A JP S57107942 A JPS57107942 A JP S57107942A
Authority
JP
Japan
Prior art keywords
brake
circuit
nearly
output
signal
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
JP18411380A
Other languages
Japanese (ja)
Other versions
JPS6030584B2 (en
Inventor
Hiroshi Watanabe
Eiki Izumi
Yukio Aoyanagi
Kazuo Honma
Yoshio Nakajima
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Construction Machinery Co Ltd
Original Assignee
Hitachi Construction Machinery Co Ltd
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 Hitachi Construction Machinery Co Ltd filed Critical Hitachi Construction Machinery Co Ltd
Priority to JP18411380A priority Critical patent/JPS6030584B2/en
Publication of JPS57107942A publication Critical patent/JPS57107942A/en
Publication of JPS6030584B2 publication Critical patent/JPS6030584B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Braking Systems And Boosters (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

PURPOSE: To provide easy braking operating by operation a brake when two conditions, under one of which a hydraulic motor is kept nearly resting and under the other a control lever of the hydraulic pump is nearly in neutral, are simultaneously filled.
CONSTITUTION: When a revolution speed of hydraulic motor 2 is reduced nearly to zero, a convertor 18 sends an approximately zero signal to a window comparator 19a. The comparator 19a feeds the (0) to an OR circuit 20. At this time, if a control lever 13 for controlling a pump 1 is in neutral, the lever 13 sends the approximately (0) signal to a window comparator 19b and resultantly, its output is turned to a (0). Thereby, an output signal of the OR circuit 20 becomes a (0) and a change-over valve 16 is switched into a position (b) to actuate a brake mechanism 10, so that a brake is applied. As the output of the OR circuit 20 is a (1) except the above mentioned condition, the change-over valve 16 is turned into a position (a). As a result, the brake operation of the brake mechanism 10 may be released.
COPYRIGHT: (C)1982,JPO&Japio
JP18411380A 1980-12-26 1980-12-26 Hydraulic circuit brake device Expired JPS6030584B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18411380A JPS6030584B2 (en) 1980-12-26 1980-12-26 Hydraulic circuit brake device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18411380A JPS6030584B2 (en) 1980-12-26 1980-12-26 Hydraulic circuit brake device

Publications (2)

Publication Number Publication Date
JPS57107942A true JPS57107942A (en) 1982-07-05
JPS6030584B2 JPS6030584B2 (en) 1985-07-17

Family

ID=16147608

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18411380A Expired JPS6030584B2 (en) 1980-12-26 1980-12-26 Hydraulic circuit brake device

Country Status (1)

Country Link
JP (1) JPS6030584B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011145684A1 (en) * 2010-05-20 2011-11-24 株式会社小松製作所 Construction machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011145684A1 (en) * 2010-05-20 2011-11-24 株式会社小松製作所 Construction machine
CN102791549A (en) * 2010-05-20 2012-11-21 株式会社小松制作所 Construction machine
JP5143311B2 (en) * 2010-05-20 2013-02-13 株式会社小松製作所 Construction machinery
US8615992B2 (en) 2010-05-20 2013-12-31 Komatsu Ltd. Construction machine

Also Published As

Publication number Publication date
JPS6030584B2 (en) 1985-07-17

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