JPS63121782U

JPS63121782U -

Info

Publication number: JPS63121782U
Application number: JP1397887U
Authority: JP
Priority date: 1987-02-02
Filing date: 1987-02-02
Publication date: 1988-08-08

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す平面図、第２
図は第１図の―に沿つた縦断面図である。第
３図は公知のコンクリートポンプを示す平面図、
第４図は第３図の―に沿つた縦断面図である
。１…ホツパー、２…切換バルブ、３…ケーシン
グ、４…切換管、５，６…開口部、７…吐出管、
８…ピストンパツキン、９，１０…ピストン、１
１，１２…輸送シリンダー、１３，１４，１５…
コンクリート、１６，１７…短管。 Figure 1 is a plan view showing one embodiment of the present invention;
The figure is a longitudinal sectional view taken along the line - in FIG. 1. Figure 3 is a plan view showing a known concrete pump;
FIG. 4 is a longitudinal sectional view taken along the line - in FIG. 3. DESCRIPTION OF SYMBOLS 1...Hopper, 2...Switching valve, 3...Casing, 4...Switching pipe, 5, 6...Opening part, 7...Discharge pipe,
8... Piston seal, 9, 10... Piston, 1
1, 12...transport cylinder, 13, 14, 15...
Concrete, 16, 17...Short pipe.

Claims

[Scope of utility model registration request]

A discharge pipe is connected to the front wall of the casing with a hopper opening at the upper end, and a pair of left and right cylinders are connected to the rear wall. is provided with a swing type switching pipe that communicates with the front ends of the pair of left and right cylinders, and each time the switching pipes are switched periodically, the piston of one cylinder communicating with the switching pipe moves forward and the piston of the other cylinder moves forward. In the piston type concrete pump, the concrete in the casing is alternately sucked into the cylinder by retracting the cylinder, and then the concrete is alternately pumped into the discharge pipe via the switching pipe. A piston-type concrete pump characterized by inserting replaceable short pipes between the front ends of each cylinder.