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Meshing-telescopic-type telescopic drilling rod assembly

A telescopic drill pipe and telescopic type technology, which is applied in the field of drill pipe and meshing telescopic telescopic drill pipe assembly, can solve the problem that the length of the drill pipe cannot be adjusted in real time, and achieve stable and reliable drilling process, stable adjustment of the telescopic process, and reasonable structure Effect

Inactive Publication Date: 2018-06-01
周兆弟
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the shortcoming of this scheme is that the length of the drill pipe cannot be adjusted in real time

Method used

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  • Meshing-telescopic-type telescopic drilling rod assembly
  • Meshing-telescopic-type telescopic drilling rod assembly
  • Meshing-telescopic-type telescopic drilling rod assembly

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 , figure 2 and image 3 As shown, a meshing telescopic telescopic drill rod assembly includes the outermost outer drill rod 1, the inner sleeve of the outer drill rod 1 is provided with an inner wall that engages with the inner wall of the outer drill rod 1 and can move up and down along the axial direction of the outer drill rod 1. Moving power drive rod 2. The meshing referred to in this embodiment is preferably the meshing of the rotating screw thread. The meshing method can ensure that the power driving rod 2 is closely combined with the external drill pipe 1 without gaps, and when the power driving rod 2 moves up and down, it can be stable. The effect of exercise.

[0033] Those skilled in the art should understand that the power drive rod 2 can also adopt a top screw structure, and threads are provided on the inner wall of the external drill rod 1, so as to realize the telescopic movement up and down.

[0034]In a preferred solution, in order...

Embodiment 2

[0048] The structure and working principle of this embodiment are the same as that of Embodiment 1, the difference is that in combination Figure 6 and Figure 7 As shown, the telescopic extension rod assembly 3 includes several extension rods 4 that are nested with each other. Except for the extension rod 4 located in the innermost part, the upper and lower ends of the remaining extension rods 4 are respectively provided with an upper lifting follower pulley assembly 7 and a lower pressing pulley assembly 7. The follower pulley assembly 8, wherein the lifting follower pulley assembly 7 located on the outermost extension rod 4 of the telescopic extension rod assembly 3 is wound with a steel wire rope, and one end of the wire rope is connected and sleeved in the extension rod 4 and connected to the extension rod 4. The top of another extension bar 4 adjacent to it, the other end is connected to the bottom of the power drive bar 2, a steel wire rope is wound on the pressing foll...

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Abstract

The invention belongs to the technical field of buildings and relates to a meshing-telescopic-type telescopic drilling rod assembly. The meshing-telescopic-type telescopic drilling rod assembly comprises an exterior drilling rod located on the outermost portion. A power driving rod meshing with the inner wall of the exterior drilling rod and capable of moving up and down in the axial direction ofthe exterior drilling rod is sleeved with the exterior drilling rod. The telescopic drilling rod assembly is an independent mechanism and can be mounted on certain common large and medium engineeringmachines to be directly used without a special carrier, if the hole diameter of a drilled hole needs to be replaced, a drilling bit on a main drilling rod can be replaced directly, and the drilling rod mechanism does not need to be replaced.

Description

technical field [0001] The invention belongs to the technical field of construction, and relates to a drill pipe, in particular to an engaging telescopic telescopic drill pipe assembly. Background technique [0002] At present, there are two types of piling machines used on construction sites: one is the rotary piling machine. The structure of this piling machine is a drill pipe suspension frame pulled up by a hoist, and the drill pipe bit is driven by the power head to form a hole in the underground drilling machine. The other is the impact hammer pile driver. The structure of this pile driver is to use the hoist to pull up the impact hammer and drop it repeatedly, and then lift it to realize pile driving. Among them, the rotary pile driver mainly realizes the purpose of drilling the drill pipe underground through the circumferential rotation of the drill pipe during piling. When the drill pipe is drilled, grouting is used to cool the drill pipe and perform grouting operati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/00E21B19/084
CPCE21B17/00E21B19/084
Inventor 周兆弟
Owner 周兆弟
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