Reverse circulation drill and gripper for same

Abstract

The invention provides a gripper for a reverse circulation drill, comprising a gripping component (2) and a sleeve base (1), wherein the gripping component (2) is sheathed on a sleeve in a dismountable manner, the sleeve base (1) is coaxially installed on the gripping component (2), and a reverse circulation drill body is installed on the sleeve base (1). The reverse circulation drill body is fixed on the sleeve through the gripping component (2), and the sleeve is reliably fixed on the ground so that during the operation of the drill, the drill body can be reliably fixed on the ground and can be prevented from being moved under the action of reacting force; and when inclined holes are drilled, the drill can also be prevented from being overturned, thereby effectively improving the drilling quality of the drill, improving the safety performance and prolonging the service life of the drill. The invention also provides the reverse circulation drill comprising the gripper.

Description

technical field [0001] The invention relates to the field of construction machinery, in particular to a holder for a reverse circulation drilling machine. The invention also relates to a reverse circulation drilling machine comprising the above-mentioned gripper. Background technique [0002] With the rapid development of my country's economic construction, the market demand for various construction machinery, especially reverse circulation drilling rigs, is increasing. [0003] Reverse circulation drilling rigs (hereinafter referred to as drilling rigs) are widely used in drilling operations in the construction of pile foundations with larger diameters and greater depths in bridges, ports, and various large-scale land buildings. During the construction process, the reverse circulation drilling rig is generally directly supported on the ground or the platform through its base, and during the drilling process, the drill pipe generates a large vibration, due to the reaction f...

AI Technical Summary

Problems solved by technology

During the construction process, the reverse circulation drilling rig is generally directly supported on the ground or the platform through its base, and during the drilling process, the drill pipe generates a large vibration, due to the reaction force of the drill pipe on the reverse circulation drilling rig, the reverse circulation The drilling rig is easy to move on the ground or on the platform, which affects the drilling quality of the reverse circulation drilling rig. When the movement is large or violent, it may even cause the bending of the drill pipe and affect the service life of the drill pipe; When drilling inclined holes, the reverse circulation drilling machine needs to be tilted. The reaction force during the drilling operation may cause the drilling machine to be unstable or even overturned, causing injury to the site personnel and damage to the drilling machine and other engineering equipment.

[0004] In order to solve the above problems and reduce the movement of the drilling rig on the ground or on the working platform when drilling, it is usually adopted to increase the weight of the drilling rig base or increase the counterweight for the drilling rig. However, due to the large reaction force received by the drilling rig during work, By increasing the weight of the base and increasing the counterweight, not only the load of the drilling rig body is increased, but the effect of reducing the movement of the drilling rig is not obvious

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