Early warning and sampling concrete surface elevation controller

Abstract

The invention provides an early warning and sampling concrete surface elevation controller. The early warning and sampling concrete surface elevation controller comprises a controller base frame (1), on which a sampling device and an early warning device are installed; the sampling device is composed of a first hoisting mechanism (2), a measuring rope (5) and a concrete sampling device (7) connected to the measuring rope (5); the early warning device is composed of a second hoisting mechanism (3), a measuring rope (5), a concrete surface suspension device (6) connected to the measuring rope (5) and an alarm bell system (4) installed on the measuring rope (5) in series. The early warning and sampling concrete surface elevation controller has the following advantages that the production and use are simple, the measuring rope does not need to be lowered frequently in the pouring process to measure the concrete surface elevation, a concrete surface control early warning system can preliminarily judge the concrete surface elevation, and a sampling system samples and examines, thus, the external interference is less and the influence of the weather factors and the underground uncertainty factors can be effectively prevented. Therefore, the early warning and sampling concrete surface elevation controller can be applied to controlling the elevation of the underground pouring concrete surface, and has a very good effect according to experimental verification.

Description

technical field [0001] The invention relates to an engineering construction control device, in particular to a measuring device for the elevation of the concrete surface in the process of pouring concrete underground. Background technique [0002] Due to the construction of a large number of high-rise buildings, the application of deep foundations is becoming more and more extensive. However, deep foundations are hidden projects, and the control of underwater concrete pouring construction is difficult. Due to the influence of factors such as mud in the hole, it is difficult to accurately determine the pouring level of concrete. In the past, judging the level of underwater concrete pouring often relied on engineers and technicians to use simple tools such as extended colanders or measuring ropes with a measuring hammer at one end to roughly measure, which was time-consuming and laborious, often resulting in overfilling of concrete, or misjudgment of thick mud as concrete , ca...

AI Technical Summary

Problems solved by technology

The disadvantage of this scheme is that it needs uninterrupted lowering of the sampler to judge the elevation of the concrete surface, which is time-consuming and laborious; the patent CN1831492A utilizes the pressure difference of concrete, mud and other media during the concrete pouring process, and uses multiple pressure sensors to monitor the pressure difference. Positioning of concrete surface elevation

The cost of instruments and equipment required by this scheme is relatively high, and the process of using the instrument is complicated. Generally, a special person is required to be responsible. In addition, the temperature has a greater impact on its results; Signal signs with fluorescent materials are set, and the concrete detection box is fixed on the steel cage at the same time. When the concrete reaches the predetermined elevation, the prompt sieve triggers the fluorescent signal mark, and the concrete detection box inspection station collects samples to judge the concrete surface elevation.

The reminder screen used in this scheme is large in size, and it is easy to hang the cage during the lifting process, and it is necessary to install a concrete detection box in the process of lowering the steel cage, which is time-consuming and laborious. influence and cannot play the role of sending a signal

Images