Multi-direction multi-shaft stirring concrete earth pile machine

Abstract

The invention provides a multi-way multi-shaft soil cement pile machine, which comprises a machine body, a motor and a gear box. The machine is characterized in that the machine also comprises a positive-negative box, a rotary disk, an outer drill rod, an inner drill rod, a transmission case, an outer stirring drill bit and an inner stirring drill bit. A main shaft of the motor is connected with a driving wheel of the gear box, a driven wheel of the gear box is connected with a driving wheel of the positive-negative box, the driven wheel of the positive-negative box is connected with the rotary disk, and the outer drill rod penetrates the rotary disk and is coaxial with the rotary disk; the inner drill rod penetrates a central hole of the outer drill rod; the driving wheel of the gear box is connected with the outer drill rod, and a reverse wheel is meshed with a gear of the inner drill rod to drive the inner drill rod to rotate; the outer stirring drill bit is fixed on the outer drill rod, and the inner stirring drill bit is fixed on the inner drill rod; the transmission case is arranged on the top part of the outer drill rod; and the motor is arranged on an under frame of the machine body. The machine has the advantages of improvement on the operating environment of the transmission case, uneasy damage, convenient maintenance, small volume, light weight and convenient assembly and disassembly of the drill bits, small drilling resistance and stable operation.

Description

technical field [0001] The invention relates to a construction machine, in particular to a soft ground treatment equipment. technical background [0002] Aiming at the problem of soft soil reinforcement, the Ministry of Metallurgical Industry and the Construction Research Institute of my country proposed a deep stirring treatment method in the 1970s. In the 1980s, the single-axis and one-way cement-soil mixing pile machine (commonly known as powder-jet pile machine) jointly developed by the Fourth Survey and Design Institute of the Ministry of Railways and Wuhan Construction Machinery Research Institute was successful in soft soil reinforcement and was recognized by many parties. Over the years, the quality of cement-soil mixing piles has been difficult to control due to reasons such as equipment technology and strata in the application, and often fails to meet the design requirements. The depth and reinforcement effect have been doubted, which affects the application of ce...

AI Technical Summary

Problems solved by technology

[0004] (1) One-way mixing In the construction of cement-soil mixing piles, there is a common phenomenon of uneven mixing, which affects the quality of piles

[0005] (2) During the construction process, there is a common occurrence of slurry phenomenon, a large amount of cement slurry emerges from the ground, which directly affects the mixing amount of cement slurry in the pile body and reduces the quality of the pile

[0006] (3) At present, during the construction of cement-soil piles, four stirrings and two sprays are generally required, and the construction efficiency is low

[0007] (4) The existing main soft ground treatment equipment powder spray pile machine PH-5, because the lifting and lowering of the machine is linked with the active force, when the soft soil layer contains hard interlayers, in order to avoid excessive drilling current, it needs to be replaced. The low-speed gear reduces the speed of up-and-down drilling and lifting speed, and at this time the speed is also reduced accordingly, which will inevitably affect the number of times of soil mixing, directly causing uneven mixing of the pile body, which will bring disadvantages to the design quality.

[0008] (5) A large number of construction practices have proved that the pile length exceeds 12m, and the quality of the lower pile is more difficult to guarantee

Although it achieves the purpose of uniform mixing, no slurry leakage and high work efficiency, its disadvantages are that the drill bit is large in size and weight, and it is inconvenient to load and unload during construction; the epicyclic gear system drills underground together with the drill bit, and the working environment is harsh and easily damaged. , maintenance is inconvenient; the resistance of the drill bit is large, and the footage is difficult; the work stability is not high during construction

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