Concrete pump with buttressed distribution pipe

Details Concrete pump with buttressed distribution pipe Concrete pump with buttressed distribution pipe

1982-09-29

1984-12-04

Gluck, Richard E.

Pumps

Expansible chamber type

Mechanically actuated distributor

417519, 417532, 417900, F04B 1502

Patent

active

044861567

ABSTRACT:
A pump assembly has a hopper adapted to hold a wet concrete mass and having a front wall formed with a front port centered on a front axis perpendicular to the front wall at the front port and a rear wall formed with two rear ports centered on respective rear axes perpendicular to the rear wall at the rear ports and generally parallel to the front axis. Respective piston pumps secured to the rear wall outside the hopper over the rear ports are operable to draw portions of the mass out of the hopper and expel them back into the hopper through the respective rear ports. An outlet conduit is connected to the front wall outside the hopper over the front port and a distributor pipe in the hopper has a front end fitted and aligned with the front port and a rear end engageable over and alignable with either of the rear ports. A buttress formation fixed on front end of the distributor pipe defines outside the hopper a buttress plane parallel to the front and rear planes. An abutment lying on the buttress plane engages the buttress formation. A drive oscillates the distributor pipe about the front axis between one position with the rear end aligned with and engaged over one of the rear ports and with the other rear port opening into the hopper and another position with the rear end aligned with and engaged over the other rear port and with the one rear port opening into the hopper. The buttress formation and abutment remain in contact with each other but move relative to each other parallel to the planes as the pipe moves between the positions. Tie rods anchored in the abutment and in the rear wall prevent forward movement of the pipe and thereby press the rear end against the rear wall.

REFERENCES:
patent: 3298322 (1967-01-01), Sherrod
patent: 4258612 (1981-03-01), Kuhlmann
patent: 4382752 (1983-05-01), Schlect
PCT International Search Report-PCT/DE80/00011, 8/7/80.

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