A pile cutter for construction engineering

Abstract

The invention discloses a pile cutter for construction engineering in the technical field of pile cutters, which includes a motor and a loading plate, and includes a plurality of crushing mechanisms, connecting rod mechanisms and negative pressure mechanisms, and the negative pressure mechanism is fixedly connected to the load On the upper surface of the plate, multiple connecting rod mechanisms are hinged on the side wall of the loading plate through pins at equal angles, and multiple crushing mechanisms are connected to the lower ends of multiple connecting rod mechanisms through pin shafts to ensure the quality of the pile head. The elevation is generally higher than the design elevation. After the concrete is solidified, the overfilling part will be chiseled off to expose the main reinforcement (steel bar) above the elevation of the pile top. The common hydraulic pile cutter solves the problem of high cost of the hydraulic pile cutter.

Description

technical field [0001] The invention relates to the field of pile cutters, in particular to a pile cutter used in construction engineering. Background technique [0002] In order to ensure the quality of the pile head during pile foundation construction, the elevation of the pile top is generally higher than the design elevation, such as cast-in-place piles, because when pouring concrete, the sediment at the bottom of the pile and the impurities precipitated in the mud during the pouring process will form on the surface of the concrete. A certain thickness, generally called laitance, after the concrete solidifies, it is necessary to chisel off the overfilling part, expose the main reinforcement (rebar) above the pile top level, and carry out the construction of the cap after passing the pile foundation inspection. Pile cutting machine is a kind of engineering machinery suitable for quickly cutting pile heads in pile foundation engineering. The pile cutter is suitable for cu...

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Problems solved by technology

[0005] The object of the present invention is to provide a kind of pile cutting machine that is used for construction engineering, to solve the pile cutting machine on the market that proposes in the above-mentioned background technology mostly adopts a plurality of hydraulic cylinders to be fixed in ring, adopts hydraulic drive, because hydraulic system work The load is large and the speed is slow, and the hydraulic rod can only be driven to extend in sequence to realize the shearing of the pile head, resulting in too large equipment volume, and the use of the hydraulic power system is poor in practicality; and because the hydraulic cylinder and the hydraulic rod are precision While the cost of the instrument is high, the sealing requirements are higher during use, so the stroke of the hydraulic rod must be shortened as much as possible, otherwise it will cause uneven force and slight deformation of the hydraulic rod, and all hydraulic cylinders are supplied in series. , when one of the hydraulic rods is deformed, the entire equipment fails, resulting in too small expansion and contraction of the broken drill at the front end of the hydraulic rod, and often the problem that the pile head edge is damaged and the middle has not been cut; and the traditional manual broken pile head, The pile head is broken by the breaking hammer, and the pile head is broken by the modular pile cutter. The breaking of the pile head by the breaking hammer will affect the bearing capacity of the pile foundation. The method of using the wind pick to break the pile head is labor-intensive for the construction operators and cannot adapt to large Large-scale pile cutting requires low efficiency and high cost; secondly, a portable cutting machine is used to cut pile heads, which will damage the steel bars. The problem

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