JPH0165299U

JPH0165299U -

Info

Publication number: JPH0165299U
Application number: JP1987158944U
Authority: JP
Priority date: 1987-10-17
Filing date: 1987-10-17
Publication date: 1989-04-26

Description

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

第１図はハイピツクリフトの全体側面姿図、第
２図は実施例の揚高位置検出器の取付図、第３図
は実施例の電気回路図、第４図は操作ボツクスの
外観図、第５図は従来の電気回路図、第６図は従
来の非常切換スイツチの操作説明図である。１……ハイピツクリフト、２……運転席、３…
…リミツトスイツチ、５……インナマスト、６…
…カム、９……上昇操作スイツチ、１０……非常
用上昇スイツチ、１１……バツテリ、１３……電
磁開閉器、１４……ポンプモータ。 Fig. 1 is an overall side view of the high pick lift, Fig. 2 is an installation diagram of the lifting height position detector of the embodiment, Fig. 3 is an electric circuit diagram of the embodiment, Fig. 4 is an external view of the operation box, FIG. 5 is a conventional electric circuit diagram, and FIG. 6 is an explanatory diagram of the operation of a conventional emergency changeover switch. 1...high pick lift, 2...driver's seat, 3...
...Limit switch, 5...Inner mast, 6...
...Cam, 9... Lift operation switch, 10... Emergency lift switch, 11... Battery, 13... Electromagnetic switch, 14... Pump motor.

Claims

【実用新案登録請求の範囲】ポンプ駆動用モータにより駆動される油圧ポン
プからの作動油の供給を受けて作動する昇降シリ
ンダにより昇降されるインナマストに取付けられ
たフオーク及び運転席などから成る昇降部が昇降
するように構成されたハイピツクリフトにおいて
、前記昇降部の頂部が予め設定された揚高規制設
定高さより低い揚高範囲で前記昇降部を上昇させ
るときに操作される上昇スイツチと、前記揚高規制設定高さ以上の揚高範囲で前記昇
降部を上昇させるときに操作される自動復帰式の
非常用上昇スイツチと、前記昇降部の頂部が前記揚高規制設定高さより
低い揚高範囲に位置しているときに低位置信号を
出力させるとともに、前記昇降部の頂部が前記揚
高規制設定高さ以上の揚高範囲に位置していると
きに高位置信号を出力させるための揚高位置検出
器と、前記揚高位置検出器から前記低位置信号が出力
されているときは前記上昇スイツチの操作により
前記ポンプ駆動用モータを駆動させて前記昇降部
を上昇させる一方、前記非常用上昇スイツチの操
作による前記ポンプ駆動用モータの駆動を無効に
させ、また、前記揚高位置検出器から前記高位置
信号が出力されているときは前記上昇スイツチの
操作による前記ポンプ駆動用モータの駆動を無効
にする一方、前記非常用上昇スイツチの操作によ
り前記ポンプ駆動用モータを駆動させて前記昇降
部を上昇させる制御手段とを備えたハイピツクリ
フトにおける揚高規制装置。[Scope of Claim for Utility Model Registration] An elevating section consisting of a fork attached to an inner mast, a driver's seat, etc., which is raised and lowered by an elevating cylinder operated by receiving hydraulic oil from a hydraulic pump driven by a pump drive motor. In a high pick lift configured to move up and down, a lift switch is operated to raise the lift part in a lifting height range in which the top of the lifting part is lower than a preset lifting height regulation setting height; an automatic return type emergency lift switch that is operated when the lifting section is raised in a lifting height range that is higher than the height regulation setting height; a lifting height position for outputting a low position signal when the top of the lifting section is located in the lifting height range and outputting a high position signal when the top of the lifting section is located in a lifting height range that is equal to or higher than the lifting height regulation setting height; When the low position signal is output from the detector and the lift height position detector, the lift switch is operated to drive the pump drive motor to raise the lifting section, while the emergency lift switch is activated. Disables the drive of the pump drive motor caused by the operation of the lift switch, and disables the drive of the pump drive motor caused by the operation of the lift switch when the high position signal is output from the lift height position detector. and control means for raising the elevating section by driving the pump drive motor by operating the emergency lift switch.