Concrete mixer having means for determining the consistency of concrete mixing therein
First Claim
1. A concrete mixer for determining the consistency of concrete mixed therein during a measuring phase in a concrete mixing operation comprising:
- a mixing drum (2);
a drag body (8,
9) mounted in said drum to be completely immersed in the concrete at least during the measuring phase and having a drag surface (6,
7) positioned to at least partially come into contact with concrete in said drum during said measuring phase;
a hydraulic driving circuit (11-14) operatively connected to oscillate said drag body; and
a pressure sensor (16, 16'"'"') connected to said hydraulic driving circuit for measuring the actual pressure value in said hydraulic driving circuit indicative of flow resistance on said drag surface during said measuring phase.
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Accused Products
Abstract
A concrete mixer is disclosed having a mixing drum and a drag body is mounted in the drum which has a drag surface positioned to at least partially come into contact with concrete in the drum during a measuring phase in the concrete mixing operation. A hydraulic driving circuit is provided to oscillate the drag body at least during the measuring phase. A pressure sensor is connected in the hydraulic driving circuit for measuring the actual pressure value in the hydraulic driving circuit which is indicative of the flow resistance on the drag surface during the measuring phase of the mixing operation.
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Citations
3 Claims
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1. A concrete mixer for determining the consistency of concrete mixed therein during a measuring phase in a concrete mixing operation comprising:
- a mixing drum (2);
a drag body (8,
9) mounted in said drum to be completely immersed in the concrete at least during the measuring phase and having a drag surface (6,
7) positioned to at least partially come into contact with concrete in said drum during said measuring phase;
a hydraulic driving circuit (11-14) operatively connected to oscillate said drag body; and
a pressure sensor (16, 16'"'"') connected to said hydraulic driving circuit for measuring the actual pressure value in said hydraulic driving circuit indicative of flow resistance on said drag surface during said measuring phase. - View Dependent Claims (2, 3)
- a mixing drum (2);
Specification