A single-blade double-contact sensor device for identifying flowing concrete

Abstract

The invention discloses a single-blade double-contact type sensor device for identifying flowing concrete. The single-blade double-contact type sensor device comprises a sensing unit and a control anddisplay unit, the sensing unit comprises a force measuring sensing box, a first force measuring sensor and a second force measuring sensor are arranged on the upper side and the lower side in the force measuring sensing box respectively, and the first force measuring sensor and the second force measuring sensor are connected to the control and display unit. The sensing unit further comprises a blade which is perpendicular to the ascending direction of the concrete, the blade is hung on the side wall of one surface of the force measuring sensing box through a hinge assembly, and the blade canrotate around a hinge shaft of the hinge assembly; one end of each blade is used for contacting concrete so as to be stressed, and the upper side and the lower side of the other end of each blade arerespectively provided with a first contact used for triggering the first force measuring sensor and a second contact used for triggering the second force measuring sensor. By the adoption of the structure, the situation that concrete reaches a monitoring point can be effectively monitored in the cast-in-place construction process that the concrete cannot be observed with naked eyes.

Description

technical field [0001] The invention relates to the technical field of concrete pouring, in particular to a single-blade double-contact sensor device for identifying flowing concrete. Background technique [0002] At present, in the process of tunnel construction in my country, lining is the last process, and the back void has always been a difficult problem to solve. Since the lining construction adopts an integral trolley, and two pumping concrete pipe ports are installed at the vault, during the process of pouring concrete, due to the closed formwork, construction personnel cannot see with the naked eye whether the concrete is fully poured, and can only be determined by experience and feeling , In the case of insufficient pumping pressure or inappropriate pouring method, it is easy to cause voids and voids between the concrete and the waterproof plate at the tunnel vault. Once voids are caused, backfilling and grouting must be used for these voids and voids. It is necess...

AI Technical Summary

Problems solved by technology

Since the lining construction adopts an integral trolley, and two pumping concrete pipe ports are installed at the vault, during the process of pouring concrete, due to the closed formwork, construction personnel cannot see with the naked eye whether the concrete is fully poured, and can only be determined by experience and feeling , in the case of insufficient pumping pressure or inappropriate pouring method, it is easy to cause cavities and voids between the concrete and the waterproof plate at the vault of the tunnel

Once voids are caused, backfilling and grouting must be used for these voids and voids. It is necessary to configure backfilling grouting benches, professionals and professional equipment. The construction period is long, and it will cause secondary pollution to the lining concrete surface , and carry out secondary treatment, resulting in extremely high construction costs; at the same time, during backfilling and grouting, the tunnel operation space will be occupied, which will affect the construction of each process and reduce the efficiency of tunnel construction

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