JPH02136154U - - Google Patents

Info

Publication number
JPH02136154U
JPH02136154U JP4653089U JP4653089U JPH02136154U JP H02136154 U JPH02136154 U JP H02136154U JP 4653089 U JP4653089 U JP 4653089U JP 4653089 U JP4653089 U JP 4653089U JP H02136154 U JPH02136154 U JP H02136154U
Authority
JP
Japan
Prior art keywords
hydraulic circuit
cargo handling
assist
oil
handling equipment
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
JP4653089U
Other languages
Japanese (ja)
Other versions
JPH0724446Y2 (en
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 filed Critical
Priority to JP4653089U priority Critical patent/JPH0724446Y2/en
Publication of JPH02136154U publication Critical patent/JPH02136154U/ja
Application granted granted Critical
Publication of JPH0724446Y2 publication Critical patent/JPH0724446Y2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Landscapes

  • Operation Control Of Excavators (AREA)

Description

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

第１図は本考案の構成図、第２図は土工車両の
側面図、第３図は従来の土工車両の油圧回路図、
第４図は他の従来例の油圧回路図である。 ２……荷扱具、３……荷役シリンダ、４……油
圧回路、６……エンジン、７……タンク、８……
メインポンプ、９……ステアリング、１０……換
向用パワーシリンダ、１１……コントロールバル
ブ、１３……アシストポンプ、１４……アシスト
回路。 Figure 1 is a configuration diagram of the present invention, Figure 2 is a side view of an earthmoving vehicle, Figure 3 is a hydraulic circuit diagram of a conventional earthmoving vehicle,
FIG. 4 is a hydraulic circuit diagram of another conventional example. 2...Cargo handling equipment, 3...Cargo handling cylinder, 4...Hydraulic circuit, 6...Engine, 7...Tank, 8...
Main pump, 9...Steering, 10...Power cylinder for diversion, 11...Control valve, 13...Assist pump, 14...Assist circuit.

Claims (1)

【実用新案登録請求の範囲】 １ 荷扱具を昇降させる荷役シリンダと、該荷役
シリンダの伸縮を制御する油圧回路とを備え、該
油圧回路にエンジンの回転に応じてタンクからの
圧油を送油するメインポンプと、ステアリングの
換向時にステアリング換向用パワーシリンダへ優
先的に送油し通常時には前記油圧回路へ送油する
ステアリングバルブとが設けられた土工車両にお
いて、旋回中に荷扱具を上昇させるとき、前記油
圧回路に圧油を補給するアシストポンプを有する
アシスト回路が設けられたことを特徴とする土工
車両。 ２ 荷扱具を昇降させる荷役シリンダと、該荷役
シリンダの伸縮を制御する油圧回路とを備え、該
油圧回路にエンジンの回転に応じてタンクからの
圧油を送油するメインポンプが設けられた土工車
両において、走行中に荷扱具を上昇させるとき、
前記油圧回路に圧油を補給するアシストポンプを
有するアシスト回路が設けられたことを特徴とす
る土工車両。[Scope of Claim for Utility Model Registration] 1. A cargo handling cylinder that raises and lowers cargo handling equipment, and a hydraulic circuit that controls the expansion and contraction of the cargo handling cylinder, and the hydraulic circuit is supplied with pressurized oil from a tank according to the rotation of the engine. An earth-moving vehicle equipped with a main pump that supplies oil preferentially to the power cylinder for steering change when the steering is changed, and a steering valve that sends oil to the hydraulic circuit during normal times, lifts material handling equipment while turning. An earthmoving vehicle characterized in that an assist circuit having an assist pump for replenishing pressure oil to the hydraulic circuit is provided when the earthmoving vehicle is moved. 2. An earthwork that is equipped with a cargo handling cylinder that raises and lowers cargo handling equipment, a hydraulic circuit that controls the expansion and contraction of the cargo handling cylinder, and a main pump that supplies pressure oil from a tank in accordance with the rotation of the engine in the hydraulic circuit. When lifting cargo handling equipment while the vehicle is running,
An earthmoving vehicle characterized in that an assist circuit having an assist pump that supplies pressure oil to the hydraulic circuit is provided.
JP4653089U 1989-04-19 1989-04-19 Earthmoving vehicle Expired - Fee Related JPH0724446Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4653089U JPH0724446Y2 (en) 1989-04-19 1989-04-19 Earthmoving vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4653089U JPH0724446Y2 (en) 1989-04-19 1989-04-19 Earthmoving vehicle

Publications (2)

Publication Number Publication Date
JPH02136154U true JPH02136154U (en) 1990-11-13
JPH0724446Y2 JPH0724446Y2 (en) 1995-06-05

Family

ID=31561690

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4653089U Expired - Fee Related JPH0724446Y2 (en) 1989-04-19 1989-04-19 Earthmoving vehicle

Country Status (1)

Country Link
JP (1) JPH0724446Y2 (en)

Also Published As

Publication number Publication date
JPH0724446Y2 (en) 1995-06-05

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Legal Events

Date Code Title Description
LAPS Cancellation because of no payment of annual fees