Drilling rod, drilling tool and pile machine

Abstract

The invention provides a drilling rod, a drilling tool and a pile machine, and relates to the technical field of construction machines. The drilling rod comprises a hollow driven rod. Limiting key sets are arranged on the driven rod and each comprise a linear first limiting key, multiple linear second limiting keys and multiple stop parts. The first limiting keys are arranged on the driven rod inthe axial direction of the driven rod. The multiple second limiting keys are arranged on the driven rod at intervals in the axial direction of the driven rod and are located on the side the same as the first limiting keys. The interval between every two second limiting keys is not smaller than the length of a convex key on the inner side wall of a power pipe in a power head of the drilling tool. One corresponding stop part is connected between each second limiting key and the corresponding first limiting key. According to the drilling rod, the drilling tool and the pile machine, the technicalproblems that in the prior art, in the process of adjusting the position of a drive pipe on the drilling rod, when the drive pipe is moved by a long distance, the operation that the drive pipe ascendsand descends on the drilling rod many times and is made to achieve autorotation after ascending and descending needs to be carried out, and the operation process is complex are relieved.

Description

technical field [0001] The invention relates to the technical field of construction machinery, in particular to a drill pipe, a drill tool and a pile driver. Background technique [0002] Pile driver is a relatively commonly used pile foundation construction equipment. Drilling tools are installed in the pile driver, and the drilling tools include setting drill pipes and power heads. The power head is used to apply torque to the drill pipe, and the pile driver also includes an axial force drive assembly, which is used to apply axial load to the drill pipe. [0003] Since the bottom of the drill rod is provided with helical blades, the power head of the drilling tool is usually installed on the top of the drill rod in order not to hinder the use of the drill rod. But because the power head is heavy, the power head is installed on the top of the drill pipe, which will lead to poor stability of the drilling tool, and in the process of drill pipe rotation, it is easy to cause c...

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a kind of drilling rod, drilling tool and pile driver, to alleviate the process of adjusting the position of the driving tube on the drilling rod in the existing drilling tool existing in the prior art, make the driving tube move more For a long distance, due to the complex shape of the keyway formed between the stepped bar splines, it is necessary to lift the drive tube on the drill pipe multiple times and make the drive tube rotate after lifting the drive tube. The operation process is cumbersome , technical issues that lead to lower productivity

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