Sand screening box for municipal bridge construction

Abstract

The invention discloses a sand screening box for municipal bridge construction. The sand screening box comprises a supporting main frame, walking wheels, a push rod, a sand screening box body, a sandinlet hopper, a top cover, a fine sand discharging opening, a cleaning door and an efficient sand screening device. The efficient sand screening device is arranged, after a hand wheel rotates, transmission is conducted through a labor-saving transmission mechanism, then a circulating pushing mechanism drives a movable sand screening mechanism to conduct back-and-forth sand screening work, the defects of electric drive sand screening in the prior art are overcome, the sand screening effect can be achieved through manpower. During sand screening, a labor-saving transmission mode is adopted, so that manpower output can be saved, the sand screening efficiency can be high, and the construction efficiency is greatly improved.

Description

technical field [0001] The invention relates to the related field of municipal bridge construction, in particular to a sand screening box used for construction of municipal bridges. Background technique [0002] Bridges generally refer to structures erected on rivers, lakes and seas to allow vehicles and pedestrians to pass smoothly. In order to adapt to the modern high-speed development of the transportation industry, bridges are also extended to cross mountain streams, poor geology or meet other traffic needs to erect buildings that make traffic more convenient. During the construction of bridges, sand screening equipment is often used , it is mainly used to screen out larger stones and sundries in the sand. [0003] At present, there are usually two ways to screen sand. One is to screen sand mechanically through electric drive. This method has high sand screening efficiency, but it needs to be driven by electric power. It needs to be equipped with a power supply at the c...

AI Technical Summary

Problems solved by technology

[0003] At present, there are usually two ways to screen sand. One is to screen sand mechanically through electric drive. This method has high sand screening efficiency, but it needs to be driven by electric power. It needs to be equipped with a power supply at the construction site to use it. It cannot be used in places without power supply, and even if the construction site is equipped with a power supply, it is also pulled. When screening sand in different locations, it is very troublesome to pull the power supply back and forth; another way is to screen sand by manpower , that is, the sand is shoveled onto the screen by manpower, and then the sand is screened by a manual scraper, which is very troublesome, and the back and forth shoveling and scraping is very labor-intensive, and the efficiency of sand screening is not high, which affects the subsequent construction efficiency

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