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JPS56149247A - Slackening device for spring brake - Google Patents

Slackening device for spring brake

Info

Publication number
JPS56149247A
JPS56149247A JP5342080A JP5342080A JPS56149247A JP S56149247 A JPS56149247 A JP S56149247A JP 5342080 A JP5342080 A JP 5342080A JP 5342080 A JP5342080 A JP 5342080A JP S56149247 A JPS56149247 A JP S56149247A
Authority
JP
Japan
Prior art keywords
suction
pressure
exhaust
spring brake
air
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
JP5342080A
Other languages
Japanese (ja)
Inventor
Kazuyoshi Munechika
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.)
Nabco Ltd
Original Assignee
Nabco 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 Nabco Ltd filed Critical Nabco Ltd
Priority to JP5342080A priority Critical patent/JPS56149247A/en
Publication of JPS56149247A publication Critical patent/JPS56149247A/en
Pending legal-status Critical Current

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Landscapes

  • Braking Systems And Boosters (AREA)

Abstract

PURPOSE: To slacken a brake easily with a simple device when a pressure fluid source goes wrong by a method wherein a pressure fluid reservoir is connected with a spring brake cylinder through a three-way transfer valve provided on a suction and exhaust duct of a spring brake cylinder.
CONSTITUTION: When the supply of pressure air to suction and exhaust pipes 2a, 2 is cut by a trouble on the pressure air source system or by other causes, if the trouble is detected and the solenoid 20 of a three-way electromagnetic transfer valve 13 is excited automatically or manually by means of a switch and the like, the transfer valve 13 is changed over, the suction-and-exhaust valve 17 is closed, the suction valve 18 is opened, the suction-and-exhaust ducts 2 and 2b are broken and a parallel duct 14a is connected with the suction-and-exhaust duct 2b. Therefore, the pressure air in a pressure-air reservoir 16 is supplied to an air pressure chamber 1a of a spring brake cylinder 1 through this connecting passage and a piston is moved to the left against a spring 7 so that the brake can be slacken.
COPYRIGHT: (C)1981,JPO&Japio
JP5342080A 1980-04-21 1980-04-21 Slackening device for spring brake Pending JPS56149247A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5342080A JPS56149247A (en) 1980-04-21 1980-04-21 Slackening device for spring brake

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5342080A JPS56149247A (en) 1980-04-21 1980-04-21 Slackening device for spring brake

Publications (1)

Publication Number Publication Date
JPS56149247A true JPS56149247A (en) 1981-11-19

Family

ID=12942344

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5342080A Pending JPS56149247A (en) 1980-04-21 1980-04-21 Slackening device for spring brake

Country Status (1)

Country Link
JP (1) JPS56149247A (en)

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