JPS6376793U

JPS6376793U -

Info

Publication number: JPS6376793U
Application number: JP16929186U
Authority: JP
Priority date: 1986-11-04
Filing date: 1986-11-04
Publication date: 1988-05-21

Description

[Brief explanation of drawings]

第１図〜第３図は本考案の実施例を示し、第１
図はフロント及びリヤのリフトシリンダとその配
管を示す説明図、第２図はフルフリーリフト式フ
オークリフトにおける荷役装置の平面的配置図、
第３図は同荷役装置の作動形態を示す説明図、第
４図は従来のフロント及びリヤのリフトシリンダ
及びその配管を示す斜視図である。１……アウタマスト、２……インナマスト、３
……リフトブラケツト、５，６……リヤリフトシ
リンダ、７，８……ピストンロツド、１１……フ
ロントリフトシリンダ、１４……リフトチエーン
、１６……オーバーフロー管路、１７……給排用
通路、１８……連絡管路、１９……通気用通路、
２０……オーバーフロー連絡管路。 Figures 1 to 3 show embodiments of the present invention;
The figure is an explanatory diagram showing the front and rear lift cylinders and their piping, and Figure 2 is a planar layout diagram of the cargo handling equipment in a full free lift type forklift.
FIG. 3 is an explanatory view showing the operating mode of the cargo handling device, and FIG. 4 is a perspective view showing conventional front and rear lift cylinders and their piping. 1... Outer mast, 2... Inner mast, 3
... Lift bracket, 5, 6 ... Rear lift cylinder, 7, 8 ... Piston rod, 11 ... Front lift cylinder, 14 ... Lift chain, 16 ... Overflow pipe, 17 ... Supply and discharge passage, 18 ...Connection pipe, 19...Ventilation passage,
20... Overflow connection pipe.

Claims

[Scope of utility model registration request]

A pair of left and right rear lift cylinders placed behind the left and right masts move the inner mast up and down along the outer mast, and a front lift cylinder placed in the center between the inner masts moves the lift bracket along the inner mast via a lift chain. In a full-free lift type forklift configured to move up and down, each of the front and rear lift cylinders is a piston-type single-acting cylinder, and the upper cylinder chamber of the rear lift cylinder is connected to an oil tank through an overflow pipe. The piston and piston rod of one rear cylinder are formed hollow to form a passage for supplying and discharging hydraulic oil to the front lift cylinder, and this supply and discharge passage is connected to the lower cylinder chamber of the front lift cylinder by a connecting pipe. A ventilation passage communicating with the upper cylinder chamber near the piston is formed in the piston rod of the other rear lift cylinder, and this ventilation passage is communicated with the upper cylinder chamber of the front lift cylinder through an overflow connecting pipe. Fully free lift type forklift cargo handling equipment.