JPS57130854A - Emergency system circuit in tractor - Google Patents

Emergency system circuit in tractor

Info

Publication number
JPS57130854A
JPS57130854A JP1525681A JP1525681A JPS57130854A JP S57130854 A JPS57130854 A JP S57130854A JP 1525681 A JP1525681 A JP 1525681A JP 1525681 A JP1525681 A JP 1525681A JP S57130854 A JPS57130854 A JP S57130854A
Authority
JP
Japan
Prior art keywords
pipe line
piston
tractor
air chamber
protection 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.)
Granted
Application number
JP1525681A
Other languages
Japanese (ja)
Other versions
JPS6231667B2 (en
Inventor
Katsuhiro Maeda
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.)
MITSUWA SEIKI CO Ltd
Hino Motors Ltd
Sanwa Seiki Ltd
Original Assignee
MITSUWA SEIKI CO Ltd
Hino Motors Ltd
Sanwa Seiki Ltd
Hino Jidosha Kogyo KK
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 MITSUWA SEIKI CO Ltd, Hino Motors Ltd, Sanwa Seiki Ltd, Hino Jidosha Kogyo KK filed Critical MITSUWA SEIKI CO Ltd
Priority to JP1525681A priority Critical patent/JPS57130854A/en
Publication of JPS57130854A publication Critical patent/JPS57130854A/en
Publication of JPS6231667B2 publication Critical patent/JPS6231667B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T11/00—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10—Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/28—Valves specially adapted therefor
    • B60T11/32—Automatic cut-off valves for defective pipes
    • B60T11/326—Automatic cut-off valves for defective pipes in pneumatic systems

Landscapes

  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Regulating Braking Force (AREA)

Abstract

PURPOSE:To improve safety and workability of a tractor by providing a protection valve between an emergency pipe line and an air chamber and as well by providing a check valve between the protection valve and the check valve. CONSTITUTION:A branch pipe line 1c is diverged from an emergency pipe line 1b in a tractor, and is connected to an air chamber 20 through a protection valve 10 and a pipe line 20b. The protection valve 10 has a piston 12 axially slidably fitted in a cylinder 11a within a body 11. A shoulder 12a of the piston 12 is fixed with a seal member 12h and the piston 12 is actuated by a spring 12c toward an end face 11d of the cylinder 11a. Further, the piston 12 is formed with holes 12d, 12e, 12f. The outlet of the hole 12f is surrounded by a seal strip 12g so that the hole 12f constitutes, with the seal strip 12g, a check valve which allows air flow only from the air chamber 20 to the pipe line 1c.
JP1525681A 1981-02-04 1981-02-04 Emergency system circuit in tractor Granted JPS57130854A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1525681A JPS57130854A (en) 1981-02-04 1981-02-04 Emergency system circuit in tractor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1525681A JPS57130854A (en) 1981-02-04 1981-02-04 Emergency system circuit in tractor

Publications (2)

Publication Number Publication Date
JPS57130854A true JPS57130854A (en) 1982-08-13
JPS6231667B2 JPS6231667B2 (en) 1987-07-09

Family

ID=11883769

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1525681A Granted JPS57130854A (en) 1981-02-04 1981-02-04 Emergency system circuit in tractor

Country Status (1)

Country Link
JP (1) JPS57130854A (en)

Also Published As

Publication number Publication date
JPS6231667B2 (en) 1987-07-09

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