JPS5695753A - Auxiliary brake device for industrial vehicle - Google Patents

Auxiliary brake device for industrial vehicle

Info

Publication number
JPS5695753A
JPS5695753A JP17375979A JP17375979A JPS5695753A JP S5695753 A JPS5695753 A JP S5695753A JP 17375979 A JP17375979 A JP 17375979A JP 17375979 A JP17375979 A JP 17375979A JP S5695753 A JPS5695753 A JP S5695753A
Authority
JP
Japan
Prior art keywords
brake
change
pump
over valve
valve
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.)
Pending
Application number
JP17375979A
Other languages
Japanese (ja)
Inventor
Mitsuo Suzuki
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.)
Toyota Industries Corp
Original Assignee
Toyoda Automatic Loom Works 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 Toyoda Automatic Loom Works Ltd filed Critical Toyoda Automatic Loom Works Ltd
Priority to JP17375979A priority Critical patent/JPS5695753A/en
Publication of JPS5695753A publication Critical patent/JPS5695753A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To supplement an engine brake with a pump by shutting off a pump circuit for a hydraulic operation device with a change-over valve interlocked with the brake in an insustrial vehicle such as forklift.
CONSTITUTION: A change-over valve 70 is provided between a pump 32 driven by an engine 3 and a hydraulic operation device A such as hydraulic cylinder of a forklift. Oil pressurized by the pump 32 through the operation of the change-over valve 70 is returned to a tank 39 through a relief valve 80 from a conduit 45. A solenoid 110 to operate the change-over valve 70 is operated by a brake lamp switch 133' interlocked with the operation of a brake pedal 37 so that the change-over valve 70 is changed over to a port C2 in the operation of the brake. Thus, when the brake is applied to a travelling vehicle, an usual brake device is operated while the operation of the hydraulic operation device A is interrupted. Namely, when the change-over valve 70 is brought to the port C2, oil from the pump 32 is returned directly to the relief valve 80 through pipes 36, 45. Since the valve 80 is not opened until oil pressure reaches a set value of a spring 81, resistance is applied to the pump 32 to apply the engine brake to a drive shaft 33 of the engine 3.
COPYRIGHT: (C)1981,JPO&Japio
JP17375979A 1979-12-28 1979-12-28 Auxiliary brake device for industrial vehicle Pending JPS5695753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17375979A JPS5695753A (en) 1979-12-28 1979-12-28 Auxiliary brake device for industrial vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17375979A JPS5695753A (en) 1979-12-28 1979-12-28 Auxiliary brake device for industrial vehicle

Publications (1)

Publication Number Publication Date
JPS5695753A true JPS5695753A (en) 1981-08-03

Family

ID=15966605

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17375979A Pending JPS5695753A (en) 1979-12-28 1979-12-28 Auxiliary brake device for industrial vehicle

Country Status (1)

Country Link
JP (1) JPS5695753A (en)

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