JPH01156251U - - Google Patents

Info

Publication number
JPH01156251U
JPH01156251U JP4883388U JP4883388U JPH01156251U JP H01156251 U JPH01156251 U JP H01156251U JP 4883388 U JP4883388 U JP 4883388U JP 4883388 U JP4883388 U JP 4883388U JP H01156251 U JPH01156251 U JP H01156251U
Authority
JP
Japan
Prior art keywords
blade
valve
cylinder
pitch
bulldozer
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
JP4883388U
Other languages
Japanese (ja)
Other versions
JPH0624435Y2 (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 JP4883388U priority Critical patent/JPH0624435Y2/en
Publication of JPH01156251U publication Critical patent/JPH01156251U/ja
Application granted granted Critical
Publication of JPH0624435Y2 publication Critical patent/JPH0624435Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Operation Control Of Excavators (AREA)

Description

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

第１図はブルドーザの側面図、第２図は本考案
の一実施例の構成説明図、第３図はトラニオン部
の分解斜視図である。 １２，１２′はピツチシリンダ、１８，１８′
はリフトシリンダ、２３は電磁開閉弁、３１はス
イツチ、Ｄ，Ｅは接続回路。 FIG. 1 is a side view of the bulldozer, FIG. 2 is an explanatory diagram of the configuration of an embodiment of the present invention, and FIG. 3 is an exploded perspective view of the trunnion. 12, 12' are pitch cylinders, 18, 18'
is a lift cylinder, 23 is an electromagnetic on-off valve, 31 is a switch, and D and E are connection circuits.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] リフト操作弁の切換操作により伸縮動作してブ
レードを昇降させるリフトシリンダとピツチ操作
弁の切換操作により伸縮動作してブレードを前後
方向に傾動させるピツチシリンダとを備えたブル
ドーザのブレード操作装置において、前記リフト
シリンダのボトム側とピツチシリンダのロツド側
とを接続する接続回路と、前記リフトシリンダの
ロツド側とピツチシリンダのボトム側とを接続す
る他の接続回路と、これら接続回路を開閉する開
閉弁と、少くともブレードの上昇時に前記開閉弁
を開作動させる開閉弁作動手段とを備えたことを
特徴とするブルドーザのブレード操作装置。 In the bulldozer blade operating device, the bulldozer blade operating device is provided with a lift cylinder that extends and contracts to move the blade up and down by switching operation of a lift operating valve, and a pitch cylinder that moves to extend and contract and tilt the blade in the front and back direction by switching operation of a pitch operating valve. A connection circuit that connects the bottom side of the lift cylinder and the rod side of the pitch cylinder, another connection circuit that connects the rod side of the lift cylinder and the bottom side of the pitch cylinder, and an on-off valve that opens and closes these connection circuits. A blade operating device for a bulldozer, comprising: on-off valve operating means for opening the on-off valve at least when the blade is raised.
JP4883388U 1988-04-13 1988-04-13 Bulldozer blade manipulator Expired - Lifetime JPH0624435Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4883388U JPH0624435Y2 (en) 1988-04-13 1988-04-13 Bulldozer blade manipulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4883388U JPH0624435Y2 (en) 1988-04-13 1988-04-13 Bulldozer blade manipulator

Publications (2)

Publication Number Publication Date
JPH01156251U true JPH01156251U (en) 1989-10-26
JPH0624435Y2 JPH0624435Y2 (en) 1994-06-29

Family

ID=31274967

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4883388U Expired - Lifetime JPH0624435Y2 (en) 1988-04-13 1988-04-13 Bulldozer blade manipulator

Country Status (1)

Country Link
JP (1) JPH0624435Y2 (en)

Also Published As

Publication number Publication date
JPH0624435Y2 (en) 1994-06-29

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