Sand screening device for road and bridge construction

Abstract

The invention discloses a sand screening device for road and bridge construction, belongs to the technical field of building equipment, and solves the problems that during the road and bridge construction process, sand screening is difficult, and direct screening of hardened sand blocks causes waste, low sand screening efficiency and difficulty in discharge. The sand screening device is characterized by comprising a first sand screening mesh, a second sand screening mesh and a sand screening box body, wherein a feeding hopper is mounted at the top of the sand screening box body; the bottom ofthe feeding hopper communicates with a smashing box; a sand falling opening is formed in the bottom of the smashing box; the first sand screening mesh is arranged below the sand falling opening; and the second sand screening mesh is arranged below the first sand screening mesh. The smashing box is mounted at the bottom of the feeding hopper to conveniently smash sand grain hardening blocks with the diameter being larger than 2 cm; in addition, after being screened by the first sand screening mesh and the second sand screening mesh, sand grains can be conveniently collected and discharged; andmoreover, driven by a linkage mechanism composed of a linkage arm and a linkage disc, and a sand screening frame drives the second sand screening mesh to vibrate, so that the sand screening efficiencyis improved, and the operation is convenient and fast.

Description

technical field [0001] The invention relates to the technical field of construction equipment, in particular to a sand screening device for road and bridge construction. Background technique [0002] With the rapid development of the economy and the continuous progress of road and bridge engineering, sand with different diameters is usually required to meet the needs of different occasions in building construction. When traditionally screening sand, a screen is placed at an angle, and then manually Use a shovel to splash the sand to the sieve, so that the sieve sieves the sand, which is laborious and inefficient. [0003] As a mechanized sand screening device, the existing sand screening machine not only saves a lot of manpower and material resources, but also greatly improves the sand screening efficiency. In rainy days, sand mixed with soil is easy to agglomerate. The screening effect of sand and gravel is not very good, and it is easy to cause waste of sand. [0004] Th...

AI Technical Summary

Problems solved by technology

[0002]With the rapid development of economy and the continuous progress of road and bridge engineering, in building construction, sand with different diameters is usually required to meet the construction needs of different occasions. Traditional When sieving sand, a sieve is placed at an angle, and then the sand is poured to the sieve manually with a shovel, so that the sieve can sieve the sand, which is laborious and inefficient

[0003] As a mechanized sand screening device, the existing sand screening machine not only saves a lot of manpower and material resources, but also greatly improves the sand screening efficiency. The mixed soil is easy to agglomerate, and the traditional sand screening device is not very effective in screening the agglomerated sand and gravel, which is easy to cause waste of sand

[0004] During the screening process, the existing sand screening device cannot crush the agglomerated sand, resulting in reduced screening effect and waste of sand; When screening, the screened sand cannot be effectively discharged in time. During the screening process of the sand screening device, the screen can only move left and right through the screen frame, and cannot shake itself while moving left and right to avoid sand blocking the screen.

Images