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Self-lubricating water and gas injection method and structure of rotary excavation equipment

A kind of equipment and air hole technology, applied in drilling equipment and methods, drilling equipment, earthwork drilling and production, etc., can solve the problems affecting the performance of the drill bit and construction progress, achieve good sealing effect and improve the effect of construction progress

Active Publication Date: 2016-08-17
ANSHAN ZIZHU ENG EQUIP MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the construction process, when the drill bit drills deeper into the ground, the viscosity of the soil increases, and if there is no lubrication, it will seriously affect the performance of the drill bit and the construction progress

Method used

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  • Self-lubricating water and gas injection method and structure of rotary excavation equipment
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  • Self-lubricating water and gas injection method and structure of rotary excavation equipment

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Embodiment Construction

[0015] Below in conjunction with specific embodiment the embodiment of the present invention is further described:

[0016] Such as Figure 1-Figure 3 Shown, a kind of self-lubricating water injection of rotary digging equipment, gas injection method, this method is in rotary digging equipment rotary main shaft 8 and the drilling rod 2 that is connected with it, drill bit 13 inside setting central water / gas hole 19, in The water injection / air hole 16 on the rotating main shaft 8 is installed with a rotating sealing sleeve 7, and a cavity 15 is left between the rotating main shaft 8 and the rotating sealing sleeve 7, and the water / air source is connected to the outside through the rotating sealing sleeve 7. When the rotating main shaft 8 rotates At this time, the rotating sealing sleeve 7 is relatively fixed with the external water / air source, and rotates relatively with the rotating main shaft 8; the high-pressure water / air fills the cavity 15 through the rotating sealing slee...

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Abstract

The invention discloses a self-lubricating water and gas injection method of rotary excavation equipment. The method comprises the steps that central water and gas through holes are formed inside a rotating spindle and a drill rod and a drill bit connected with the rotating spindle, a rotating sealing sleeve is installed at a water / gas injection hole in the rotating spindle, a cavity is reserved between the rotating spindle and the rotating sealing sleeve, the rotating sealing sleeve is externally connected with a water / gas source, when the rotating spindle rotates, the rotating sealing sleeve and the external water / gas source are relatively fixed, and the rotating sealing sleeve and the rotating spindle rotate relatively; the cavity is filled with high-pressure water / gas through the rotating sealing sleeve, then, the high-pressure water / gas enters the central water / gas through holes inside the spindle, the drill rod and the drill bit and finally flows out from the bottom of the drill bit, and the self-lubricating effect on rock drilling of the drill bit is achieved. In the high-speed rotation process of the rotary excavation equipment, high-pressure water / gas is injected in the interior, water / gas flow successfully reaches the bottom of the drill bit and is sprayed out from the bottom of the drill bit, the drill bit in working can be effectively cooled and lubricated in time, rotary excavation can be promoted, and the construction progress can be improved.

Description

technical field [0001] The invention relates to the technical field of rotary drilling and rock drilling, in particular to a self-lubricating water injection and gas injection method and structure of rotary drilling equipment. Background technique [0002] With the continuous progress and development of my country's social economy, my country's urbanization has also made great progress. In my country's highway bridges, high-rise buildings, urban transportation, and pile foundation construction of large ports, rotary excavation equipment has gradually become a major national project. The preferred equipment for construction. Among them, the rotary excavation equipment is composed of a screw power device, a screw sleeve drill pipe device and a drill bit. During the construction process, when the drill bit drills deeper into the ground, the viscosity of the soil increases. If there is no lubrication, the performance of the drill bit and the construction progress will be serious...

Claims

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Application Information

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IPC IPC(8): E21B7/00E21B21/00E21B10/60
CPCE21B7/00E21B10/60E21B21/00E21B21/16
Inventor 齐勇刚赵博
Owner ANSHAN ZIZHU ENG EQUIP MFG
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