Screen cloth position detection device and equipment

Abstract

The invention discloses a screen cloth position detection device and equipment, which can be used for improving the safety of a concrete pump truck. The screen cloth position detection device comprises a sensing block (100) and a proximity switch (200), wherein the sensing block (100) is fixedly connected to a first position of a screen cloth spindle (300) to rotate along with the screen cloth spindle (300); the screen cloth spindle (300) is used for connecting a screen cloth and a feed hopper of the concrete pump truck; the proximity switch (200) is positioned on a second position on the feed hopper, which is opposite to the first position; when the sensing block (100) is sensed, a first signal is output; and otherwise, a second signal is output.

Description

Technical field [0001] The invention relates to the technical field of engineering vehicles, in particular to a screen position detection device and equipment. Background technique [0002] The concrete pump truck is a machine that uses pressure to continuously transport concrete along the pipeline. Because concrete is transported and poured along the conveying pipe under the push of a concrete pump, the requirements for concrete are more stringent. Not only must it meet the strength and durability requirements specified in the design, but also the requirements for concrete in pipeline transportation, namely The concrete is required to have the properties of being able to pass through the conveying pipeline smoothly, with low friction, non-segregation, non-blocking, and good viscoplasticity, that is, the concrete must have good pumpability. Therefore, when feeding material to the distributing device of the concrete pump truck, in order to prevent the large-sized aggregate or for...

AI Technical Summary

Problems solved by technology

[0005] However, due to the large amount of mud and dirt in the construction environment at the feed hopper, and the concrete or concrete ash is easy to deposit on the limit switch, resulting in problems such as limit switch failure or device damage

Therefore, the device failure rate of the existing screen position detection device is high, and signal distortion often occurs, and regular inspection and maintenance are required

[0006] In addition, the stroke of the limit switch is relatively short

If the maintenance of the concrete pump truck is not in place during the use of the concrete pump, it will cause difficulty in closing the screen, and the limit switch will never be in the pressed state, and the detection structure will fail, resulting in a loss of equipment safety, which also increases the maintenance of the equipment during use. strength and requirements

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