Highway subgrade construction pretreatment device

Abstract

The invention relates to the technical field of highway construction, and discloses a highway subgrade construction pretreatment device. The highway subgrade construction pretreatment device comprisesa box body, a feeding port is fixedly connected to the top of the box body, supporting frames are fixedly connected to the left side and the right side of the box body, and steering arms are rotatably connected to the bottoms of the supporting frames. According to the highway subgrade construction pretreatment device, by arranging a fixed plate, a first motor, a driving shaft, an elliptical cam,a first spring, a pull plate, a pull rod, a movable pressing plate, crushing rollers, a first rotating shaft, a belt, a gear and a second rotating shaft, a large soil block is clamped between the fixed plate and the movable pressing plate, part of small soil blocks pass through a gap between the fixed plate and the movable pressing plate and enter the space between the two crushing rollers througha material conveying frame to be finely crushed, and the problems that when some existing subgrade pretreatment backfill devices treat some thick soil blocks, crushing is still incomplete, and even the large and thick soil blocks need to be manually beaten and crushed in advance and then enter a backfilling device to be crushed are solved.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a pretreatment device for road bed construction. Background technique [0002] Before road subgrade construction, it is necessary to carry out filling pretreatment on the road surface to improve the bearing capacity of the subgrade. When backfilling, larger crushed stones cannot be used for backfilling, because there are gaps in the larger soil blocks during the backfilling process, resulting in The overall strength becomes smaller, and there will be gaps between the bumps, which will easily lead to collapse and subsidence. Therefore, it is necessary to use a backfill device to break the soil. However, some current roadbed pretreatment backfill devices still have cracks when dealing with some thicker soil blocks. It is not complete, and it is even necessary to manually beat and break larger and thicker soil clods in advance, and then enter the backfill device for crushi...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a roadbed construction pretreatment device, which has the advantages of strong crushing ability, crushing soil blocks in batches, and complete crushing, which solves the problem of some current roadbed pretreatment backfill devices. Some thicker soil clods still have incomplete crushing, and even the larger and thicker soil clods need to be broken manually in advance, and then enter the backfill device for crushing.

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