JPS5871096U

JPS5871096U - hydraulic lift device

Info

Publication number: JPS5871096U
Application number: JP16542781U
Authority: JP
Inventors: 大河原　吉克
Original assignee: コレツク株式会社
Priority date: 1981-11-05
Filing date: 1981-11-05
Publication date: 1983-05-14

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

[Brief explanation of the drawing]

図面はこの考案の実施例を示し、第１図は側面図、第２
図は第１図の一部分を拡大して示す断面図、第３図は第
１図の他の部分を拡大して示す断面図、第４図は第３図
ＩＶ−ＩＶ線の拡大断面図、第５図は第３図■−■線に
沿いかつプランジャポンプ操作レバーを折り畳んだ状態
を示す部分切欠き矢視図である。１・・・・・・ブロック、２・・・・・・リフトシリン
ダ、１１・・・・・・油タンク、１９・・・・・・プラ
ンジャポンプ、２５・・・・・・可動部材、５９・・・
・・・吸込み油路、６１・・・・・・吸込み弁、６９・
・・・・・吐出し油路、７４・・・・・・吐出し弁、８
３・・・・・・戻し油路、８５・・・・・・戻し弁。The drawings show an embodiment of this invention, the first being a side view and the second being a side view.
The figure is an enlarged sectional view of a part of Fig. 1, Fig. 3 is an enlarged sectional view of another part of Fig. 1, and Fig. 4 is an enlarged sectional view taken along the line IV-IV of Fig. 3. FIG. 5 is a partially cutaway view taken along the line ■-■ in FIG. 3 and showing a state in which the plunger pump operating lever is folded. DESCRIPTION OF SYMBOLS 1...Block, 2...Lift cylinder, 11...Oil tank, 19...Plunger pump, 25...Movable member, 59 ...
... Suction oil path, 61 ... Suction valve, 69.
...Discharge oil path, 74...Discharge valve, 8
3... Return oil path, 85... Return valve.

Claims

[Scope of utility model registration request]

An oil tank 11, a plunger pump 19, and a lift cylinder 2 are fixed to a block 1 for forming an oil passage, and a suction unit connects the oil tank 11 and the plunger pump 19 and prevents backflow of oil from the plunger pump 19 to the oil tank 11. Suction oil passage 59 with valve 61, plunger pump 1
9 and the lift cylinder 2 and includes a discharge valve 74 that prevents backflow of oil from the lift cylinder 2 to the plunger pump 19 and the lift cylinder 2.
A return valve 85 connects the oil tank 11 with the oil tank 11 and also serves as pressure control.
A return oil passage 83 is provided in this block 1, and
A hydraulic lift device in which a movable member 25 for operating a return valve 85 is biased by a spring 33 in a direction to close the return valve 85 and is disposed outside the book 1.