JPS59187240A - Testing device for variable speed steering mechanism - Google Patents

Testing device for variable speed steering mechanism

Info

Publication number
JPS59187240A
JPS59187240A JP59047013A JP4701384A JPS59187240A JP S59187240 A JPS59187240 A JP S59187240A JP 59047013 A JP59047013 A JP 59047013A JP 4701384 A JP4701384 A JP 4701384A JP S59187240 A JPS59187240 A JP S59187240A
Authority
JP
Japan
Prior art keywords
control valves
valves
motors
pressure
pressure control
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
JP59047013A
Other languages
Japanese (ja)
Other versions
JPH0343576B2 (en
Inventor
Mototaka Kojima
Shinji Yoshida
Yoichiro Hirakawa
Original Assignee
Hitachi 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 Ltd filed Critical Hitachi Ltd
Priority to JP59047013A priority Critical patent/JPH0343576B2/ja
Publication of JPS59187240A publication Critical patent/JPS59187240A/en
Publication of JPH0343576B2 publication Critical patent/JPH0343576B2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts

Abstract

PURPOSE:To prevent erroneous operations on the occasion of various tests by a construction wherein additional pressure control valves having set pressures higher than those of pressure control valves are provided in the middle of pipelines on the discharge side of oil hydraulic pump motors, respectively. CONSTITUTION:Additional pressure control valves 22 and 22' are provided on the discharge side of oil hydraulic pump motors 12 and 12' respectively, and the set pressure of these control valves 22 and 22' are set slightly higher than those of pressure control valves 13 and 13'. In the case of an upward-slope running test, for instance, a power from the titled mechanism 3 is absorbed by the motors 12 and 12'. On the occasion, check valves 15 and 15' are opened since the pressure on the inflow side is higher than that on the outflow side. Therefore, a working fluid for suction from an oil hydraulic pump 10 is supplied to the motors 12 and 12' through the check valves 15 and 15', and a high-pressure oil which is discharged is returned to an oil tank 9 through check valves 16 and 16'. By this construction, false operations can be prevented in various tests without using stop valves.
JP59047013A 1984-03-14 1984-03-14 Expired - Lifetime JPH0343576B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP59047013A JPH0343576B2 (en) 1984-03-14 1984-03-14

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP59047013A JPH0343576B2 (en) 1984-03-14 1984-03-14

Publications (2)

Publication Number Publication Date
JPS59187240A true JPS59187240A (en) 1984-10-24
JPH0343576B2 JPH0343576B2 (en) 1991-07-03

Family

ID=12763283

Family Applications (1)

Application Number Title Priority Date Filing Date
JP59047013A Expired - Lifetime JPH0343576B2 (en) 1984-03-14 1984-03-14

Country Status (1)

Country Link
JP (1) JPH0343576B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102645340A (en) * 2012-04-10 2012-08-22 浙江大学 Automobile radiator pressure pulse test platform
CN104990703A (en) * 2015-07-23 2015-10-21 合肥扬帆通信元器件有限公司 Hydraulic valve performance test experimental platform
CN104990816A (en) * 2015-07-14 2015-10-21 珠海格力电器股份有限公司 Pulse test device
CN107782568A (en) * 2017-10-23 2018-03-09 中国北方车辆研究所 A kind of method of testing of crawler travel device power attenuation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102645340A (en) * 2012-04-10 2012-08-22 浙江大学 Automobile radiator pressure pulse test platform
CN104990816A (en) * 2015-07-14 2015-10-21 珠海格力电器股份有限公司 Pulse test device
CN104990703A (en) * 2015-07-23 2015-10-21 合肥扬帆通信元器件有限公司 Hydraulic valve performance test experimental platform
CN107782568A (en) * 2017-10-23 2018-03-09 中国北方车辆研究所 A kind of method of testing of crawler travel device power attenuation

Also Published As

Publication number Publication date
JPH0343576B2 (en) 1991-07-03

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