Sand screening device for road and bridge construction

Abstract

The invention discloses a sandy soil screening device for road and bridge construction. The sandy soil screening device for road and bridge construction comprises a reciprocating pushing device and acleaning mechanism; a pushing mechanism is arranged in a protective frame, and a first motor drives a cam to do eccentric motion, so that a push rod is enabled to move in a reciprocating manner to push a swinging frame to swing, and the advantage of quickly driving a swinging mechanism to link is achieved; the swinging mechanism is arranged at the bottom of a discharge nozzle, and when the push rod moves in a reciprocating manner, the swinging frame can be driven to swing around a positioning shaft, so that the swinging frame is enabled to slide at the upper end of a sliding shaft through a sliding chute, the swinging frame can swing stably, and the advantages of preventing sand from being conveyed and concentrated on one point and increasing the screening efficiency are achieved; and thecleaning mechanism is arranged at the top of the screening frame, and a second motor drives a pinion to rotate, so that a bull wheel drives a driving handle to swing around a fixed disc through a movable handle, the driving handle drives a brush plate to brush the upper end of a screen, and the advantage of preventing the sand on the screen from remaining is achieved.

Description

technical field [0001] The invention relates to the related fields of road and bridge construction, in particular to a sand and soil screening device for road and bridge construction. Background technique [0002] Road bridges are generally composed of several parts such as roadbed, road surface, bridge, tunnel engineering and traffic engineering facilities. The traffic load transmitted by the road surface is an important part of the entire highway structure. The roadbed mainly includes several parts such as the subgrade body, side slope, side ditch and other auxiliary facilities. [0003] When screening sand, it is often necessary to use a sand screening device. When the current sand screening device is in use, because the position of the discharge port is fixed, the sand will accumulate at one point, affecting the screening efficiency. The existing sand and soil screening device for road and bridge construction is not easy to swing and transport the sand and clean the scr...

AI Technical Summary

Problems solved by technology

[0003] When screening sand, it is often necessary to use a sand screening device. When the current sand screening device is in use, because the position of the discharge port is fixed, the sand will accumulate at one point, affecting the screening efficiency. The existing sand and soil screening device for road and bridge construction is not easy to swing and transport the sand and clean the screen, resulting in low screening efficiency and residual sand on the screen

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