Soil exploration drilling device with drill bit overloading protection function

Abstract

The invention discloses a soil exploration drilling device with a drill bit overloading protection function. A moving trolley is included, and provided with a power device for providing lifting and rotating movement for soil drilling; the power device is provided with a torque overloading protection device; a pressure overloading protection device is arranged in the torque overloading protection device, and the pressure overloading protection device is used for avoiding that pressure of soil rock on a drill bit is too large during drilling and consequently the drill bit is damaged; and the lower side of the torque overloading protection device is provided with a bending overloading protection device used for avoiding that bending of a drill stem is too large. The bending overloading protection device can be used for detecting the bending deformation amount of the drill stem, and therefore it is avoided that the bending deformation amount of the drill stem is too large. The soil exploration drilling device with the drill bit overloading protection function can achieve torque overloading protection and pressure overloading protection of the drill bit, and can also avoid that the bending deformation amount of the drill stem is too large.

Description

technical field [0001] The invention relates to the technical field of drill bit overload protection, in particular to a soil exploration drilling device with the function of drill bit overload protection. Background technique [0002] Soil survey is the survey and research work on basic conditions such as soil type, properties, distribution, and formation conditions. Soil survey usually requires drilling rigs to drill and sample. When the soil is dense or the viscosity is high, the resistance of the drill bit will be relatively high Large, the resistance even exceeds the rotational force provided by the rated torque of the drill bit. At the same time, there is a certain amount of hard rock in the soil that is easy to damage the drill bit, and the contact between the rock and the drill pipe will cause the drill pipe to bend and deform. The overload of the current soil drilling rig The protector can only realize torque overload protection, but cannot effectively protect the d...

AI Technical Summary

Problems solved by technology

[0002] Soil survey is the survey and research work on basic conditions such as soil type, properties, distribution, and formation conditions. Soil survey usually requires drilling rigs to drill and sample. When the soil is dense or the viscosity is high, the resistance of the drill bit will be relatively high Large, the resistance even exceeds the rotational force provided by the rated torque of the drill bit. At the same time, there is a certain amount of hard rock in the soil that is easy to damage the drill bit, and the contact between the rock and the drill pipe will cause the drill pipe to bend and deform. The overload of the current soil drilling rig The protector can only realize torque overload protection, but cannot effectively protect the drill bit and drill pipe. This invention clarifies a device that can solve the above problems

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