JPS5885523U - Hydraulic drive vehicle control circuit - Google Patents

Hydraulic drive vehicle control circuit

Info

Publication number
JPS5885523U
JPS5885523U JP18168181U JP18168181U JPS5885523U JP S5885523 U JPS5885523 U JP S5885523U JP 18168181 U JP18168181 U JP 18168181U JP 18168181 U JP18168181 U JP 18168181U JP S5885523 U JPS5885523 U JP S5885523U
Authority
JP
Japan
Prior art keywords
control circuit
switching device
set pressure
reverse
pilot pressure
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
JP18168181U
Other languages
Japanese (ja)
Inventor
一夫 松田
森田　紘一
Original Assignee
株式会社小松製作所
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 株式会社小松製作所 filed Critical 株式会社小松製作所
Priority to JP18168181U priority Critical patent/JPS5885523U/en
Priority to GB08235016A priority patent/GB2114272B/en
Publication of JPS5885523U publication Critical patent/JPS5885523U/en
Pending legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic
    • F16H61/4157—Control of braking, e.g. preventing pump over-speeding when motor acts as a pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
    • F16H61/38—Control of exclusively fluid gearing
    • F16H61/40—Control of exclusively fluid gearing hydrostatic

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motor Power Transmission Devices (AREA)
  • Control Of Fluid Gearings (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of the drawing]

図面は本考案の実施例を示す油圧回路図である。 １は油圧ポンプ、２は油圧モータ、３は前進側回路、４
は後進側回路、７ａ、７ｂはリリーフ弁、８ａ、　８ｂ
はセット圧切換装置、９は前後進シグナル弁、１０ａ、
１０ｂはパイロット圧作用部、１１は制御用ポンプ。The drawing is a hydraulic circuit diagram showing an embodiment of the present invention. 1 is a hydraulic pump, 2 is a hydraulic motor, 3 is a forward side circuit, 4
is the reverse side circuit, 7a, 7b are the relief valves, 8a, 8b
is a set pressure switching device, 9 is a forward/reverse signal valve, 10a,
10b is a pilot pressure acting part, and 11 is a control pump.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 油圧ポンプ１と油圧モータ２とを前進側回路３と後進側
回路４にて接続した油圧駆動車の制御回路において、上
記両回路のそれぞれに、パイロット圧にて作動するセッ
ト圧切換装置ａａ、ａｂにてセット圧を高・低切換える
ことができるようにしたリリーフ弁７ａ、７ｂを接続し
、上記セット圧切換装置３ａ、　８ｂの各パイロット圧
作用部１０ａ、１０ｂと制御用ポンプ１１との間に、前
後進切換装置と連動して切換わり、前進時には前進側の
セット圧切換装置８ａに、また後進時に後進側のセット
圧切換装置８ｂのそれぞれのパイロット圧作用部１０ａ
、１０ｂにパイロット圧を選択的に供給する前後進シグ
ナル弁９を介装したことを特徴とする油圧駆動車の制御
回路。In a control circuit for a hydraulically driven vehicle in which a hydraulic pump 1 and a hydraulic motor 2 are connected by a forward circuit 3 and a reverse circuit 4, set pressure switching devices aa and ab operated by pilot pressure are installed in each of the two circuits. Relief valves 7a and 7b that can switch the set pressure between high and low are connected between each pilot pressure acting part 10a and 10b of the set pressure switching device 3a and 8b and the control pump 11. , is switched in conjunction with the forward/reverse switching device, and is applied to the set pressure switching device 8a on the forward side when moving forward, and the pilot pressure acting portion 10a of the set pressure switching device 8b on the reverse side when moving backward.
, 10b, a control circuit for a hydraulically driven vehicle is provided with a forward/reverse signal valve 9 for selectively supplying pilot pressure to the terminals 10b and 10b.
JP18168181U 1981-12-08 1981-12-08 Hydraulic drive vehicle control circuit Pending JPS5885523U (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP18168181U JPS5885523U (en) 1981-12-08 1981-12-08 Hydraulic drive vehicle control circuit
GB08235016A GB2114272B (en) 1981-12-08 1982-12-08 Hydrostatic transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18168181U JPS5885523U (en) 1981-12-08 1981-12-08 Hydraulic drive vehicle control circuit

Publications (1)

Publication Number Publication Date
JPS5885523U true JPS5885523U (en) 1983-06-10

Family

ID=16105009

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18168181U Pending JPS5885523U (en) 1981-12-08 1981-12-08 Hydraulic drive vehicle control circuit

Country Status (2)

Country Link
JP (1) JPS5885523U (en)
GB (1) GB2114272B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4951466A (en) * 1989-06-12 1990-08-28 General Electric Company Warm-up control for transmission hydrostatic unit

Also Published As

Publication number Publication date
GB2114272B (en) 1985-05-09
GB2114272A (en) 1983-08-17

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