A rapid drilling and piling equipment for highway protection construction on expansive soil sections

Abstract

The invention relates to the field of road protection construction, in particular to a rapid drilling and piling equipment for road protection construction in expansive soil road sections, which includes a horizontally arranged main shaft, and the two ends of the main shaft are respectively movably inserted into the supports at the two ends of the main shaft. In the bearing hole in the middle of the wheel body, a rapidly switchable drilling and piling mechanism is provided in the middle of the main shaft. The drilling and piling mechanism is used to realize drilling and piling on the road surface. The main shaft between the two supporting wheels A separate road surface compaction mechanism is symmetrically provided on the inside and outside sides of the road surface, and the road surface compaction mechanism is used to realize the compaction of the road surface and the protective support for the drilling and piling mechanism. This device can quickly separate and deform the road surface compaction mechanism during drilling, piling, and tamping processes, and realize stable support for the entire device. When the device is stored, the road surface compaction mechanism can be used as a road roller and at the same time support the internal structure The role of protection.

Description

technical field [0001] The invention relates to the field of road protection construction, in particular to a semi-automatic road construction device for quickly implementing equipment-based construction operations on expansive soil, in particular to a rapid drilling and piling equipment for road protection construction on expansive soil sections. Background technique [0002] Expansive soil is a kind of highly plastic clay with high bearing capacity in general. It has the characteristics of water absorption expansion, water loss shrinkage and repeated expansion and contraction deformation, water immersion bearing capacity attenuation, drying shrinkage crack development, etc., and its properties are extremely unstable. [0003] In the design of road engineering, the physical and mechanical properties of expansive soil need to be based on the detailed report of geological survey and the experience of dealing with expansive soil. The design adopts the idea of ​​comprehensive tr...

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Problems solved by technology

[0004] Compared with ordinary road sections, the strength and compaction standards of road beds in expansive soil areas should strictly abide by the relevant national regulations. Therefore, expansive soil road sections not only have the above-mentioned safety problems, but at the same time, due to the special structure of expansive soil road sections, drilling and piling In addition to the above-mentioned defects, the situation will also affect the overall load-bearing strength of the post-forming pavement and the stability of the roadbed in use.

[0005] The traditional drilling and piling methods are manual drilling and piling by construction workers using tools (such as hammers, hand-held electric drills, etc.). Traditional manual operations are not effective due to their low operating efficiency and poor drilling and piling effects Suitable for construction operations on long road sections, which have been gradually replaced by mechanical equipment operations

[0006] Due to the continuous innovation and development of mechanical operation equipment, many units and R & D personnel have also carried out a lot of design and research and development on related highway drilling and piling construction equipment. However, the existing drilling and piling equipment usually adopts a cantilever structure. Extend the drilling structure to one side to control the up and down movement of the equipment to realize drilling and piling, and the overall stability of the equipment is poor when the whole machine is working; in addition, the functions of the existing piling machines or drilling machines are relatively single, and the existing The hammer-drop piling method of the pile driver has a large vibration and is not suitable for use on expansive soil road sections. The engine as the driving source makes the working noise louder. Although there are also multi-functional integrated drilling and piling equipment, their basic The upper overall mechanism is relatively large, with poor versatility and adaptability

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