Concrete pump vehicle

Details Concrete pump vehicle Concrete pump vehicle

1994-09-19

1995-10-24

Kashnikow, Andres

Dispensing

With casing or support

Ambulant

137625, 220335, 417900, F04B 1706

Patent

active

054603013

DESCRIPTION:

BRIEF SUMMARY
FIELD OF THE INVENTION

The invention relates to a concrete pump vehicle with a chassis constructed as a truck chassis, with a bearing block arranged in the front zone of the chassis, with a distributor boom turnable on the bearing block about a vertical axis and swingable about a horizontal axis, consisting of several boom arms limitedly swingable with respect to one another about horizontal axes, supportable in the folded state on at least one support place constructed as boom support block in the rearward zone of the chassis, with a material container arranged in the vicinity of the rearward end of the chassis, having an upward-facing filling opening, with a concrete pump connected to the material container in the zone of a pump-side boundary wall and connected on a pressure side thereof with a delivery line arrangement provided on the distributor boom, and with a splash guard arrangement upstandingly arranged in the zone of the pump-side boundary wall of the material container on a border of the filling opening.


BACKGROUND OF THE INVENTION

In known concrete pump vehicles the spray guard arrangement is mostly constructed as a sheet metal box permanently installed on the pump side of the material supply container, which box provides that the concrete splashes arising inside the material container in the pumping of the concrete cannot pass into the region of the pump. It has proved, however, that an efficient spray protection can be achieved only with a sufficient structural height of the sheet metal box. This requires, on the other hand, a sufficient free space under the distributor boom supported on the chassis, which space, especially in the case of large distributor booms is not always available. In the traveling state the filling opening of the material container is often closed with a funnel covering constructed as a rubber mat. Thereby there is avoided a splashing out of the concrete during travel as well as an excessively rapid hardening of the concrete, for example by solar radiation.
Proceeding from this, underlying the invention is the problem of developing a splash guard arrangement for the material feed container of a concrete pump vehicle, which independently of the size of the distributor boom, ensures an effective spray protection both in the working state and also in the traveling state.
For the solution of this problem there is proposed the combination of features wherein the splash protection arrangement includes a lockable lid articulated on the material feed container which is swingable from a traveling position at least partially overlapping an opening of the container to a working position pivoted 90.degree. relative to the traveling position when the distributor boom is lifted from its support place, and further developments of the invention are yielded as described herein.
The solution according to the invention proceeds from the thought that the splash protection is provided only during the pump operation, therefore with concrete pump vehicle at a standstill and distributor boom raised, requires a sufficient structural height to catch the concrete sprays. In traveling operation, in which the distributor boom is folded up and supported on the boom support block, however, such a structural height of the spray protection arrangement is not needed. For this reason it is proposed according to the invention that the splash protection arrangement have on the pump-side boundary wall of the material container, a rigid wall structure rising somewhat above the edge of the container, and that in the zone of the upper edge of the wall structure that is at a distance from the filling opening there be articulated a rigid lid swingable transversely to the horizontal axis extending transversely to the chassis, the swiveling range of which overlaps with that of the folded-together distributor boom and which with the distributor boom raised from its supporting place is limitedly swingable from a traveling position at least partly overlapping the container opening into a working position open by

REFERENCES:
patent: 3507347 (1970-04-01), Bennett
patent: 3572380 (1971-03-01), Jackson et al.
patent: 3942688 (1976-03-01), Pryor et al.
patent: 4130134 (1978-12-01), Castle
patent: 4625760 (1986-12-01), Mertens
patent: 4788999 (1988-12-01), Dalpare
Patents Abstracts of Japan M-1160 Sep. 20, 1991 vol. 15/No. 374 Japanese Patent No. 3-149360, Dated Jun. 25, 1991 (1 page).

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