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Radial drive telescopic arm non-forming cutting digging drilling tool

A telescopic arm and drilling tool technology, which is applied in the direction of drill bits, drilling equipment, earthwork drilling and mining, etc., can solve the problems of large resistance of excavation and reaming drilling tools, inability to excavate complex hole patterns, and failure to achieve the diameter expansion ratio. To achieve the effect of reasonable force, light weight and good cutting ability

Pending Publication Date: 2020-06-05
闻志君
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the defects of the existing technology such as high resistance, low strength, easy damage, large length-to-diameter ratio, expansion-to-diameter ratio that cannot meet the requirements of industry regulations, and inability to dig complex hole patterns in the existing technology

Method used

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  • Radial drive telescopic arm non-forming cutting digging drilling tool
  • Radial drive telescopic arm non-forming cutting digging drilling tool
  • Radial drive telescopic arm non-forming cutting digging drilling tool

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]The radially driven telescopic arm non-shaped cutting and digging drilling tool includes a single-stage cutting unit 27 , a mounting seat 1 , and a slag receiving bucket 22 . The single-stage cutting unit 27 includes a fixed arm 8, a telescopic arm 9, a front-end support slide 13, a tail-end support slide 14, a limit block 15, a cutting tool 16, a single-stage double-acting actuator 18, and a magnetostrictive displacement sensor 30; the fixed arm 8 is installed in the radial hole of the mounting seat 1, the piston rod end and the bottom end of the cylinder of the single-stage double-acting actuator 18 are respectively connected with the telescopic arm 9 and the fixed arm 8, and the front end of the front end of the fixed arm 8 is installed on the inner side The support slider 13, the tail end support slider 14 is installed on the outer side of the rear end of the telescopic arm 9, the cutting tool 16 is installed on the front end face of the telescopic arm 9, the front en...

Embodiment 2

[0045] The cutting unit 7 can also be a two-stage cutting unit 28, which can overcome the deduction of the structure size due to the ineffective stroke of the actuator 17, and the radially driven telescopic arm of the single-stage cutting unit 27 can not achieve 3 times of the unshaped cutting and digging tools. Specifications for the expansion ratio. The telescopic arm 9 of the two-stage cutting unit 28 is divided into two stages, namely the first-stage telescopic arm 11 and the second-stage telescopic arm 12, which are driven by a two-stage double-acting actuator 19, and the piston rod of the two-stage double-acting actuator 19 is used for driving. The end and the bottom end of the cylinder are respectively connected with the secondary telescopic arm 12 and the fixed arm 8. The front end support slider 13 is installed on the inner side of the front end of the fixed arm 8, and the tail end support slider 14 is installed on the outer side of the tail end of the primary telescop...

Embodiment 3

[0047] The cutting unit 7 can also be a three-stage cutting unit 29, which can overcome the structural size of the ineffective stroke of the actuator 17 due to the too small pile hole, and the radially driven telescopic arm of the two-stage cutting unit 28 is non-shaped cutting and undercutting drill. It cannot meet the regulatory requirements of 3 times the diameter expansion ratio. The three-stage cutting unit 29 telescopic arm 9 is divided into two stages, namely the first-stage telescopic arm 11 and the second-stage telescopic arm 12, which are driven by a three-stage double-acting actuator 20, and the piston rod end of the third-stage double-acting actuator 20 is used. and the bottom end of the cylinder are respectively connected with the secondary telescopic arm 12 and the fixed arm 8, the front end support slider 13 is installed on the inner side of the front end of the fixed arm 8, the tail end support slider 14 is installed on the outer side of the tail end of the prim...

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Abstract

The invention discloses a radial drive telescopic arm non-forming cutting digging drilling tool. A box type telescopic arm cutting unit can be selectively installed in a radial hole formed in the outer side of a mounting base so as to adapt to the power and geological conditions of a drilling machine; the digging diameter expansion ratio can meet the requirement of three times of the diameter expansion ratio required by JGJ / T225-2010 Technical Regulations for Large Diameter Bottom Expanded Cast-in-place Piles and DL / T5219-2014 Technical Regulations for Foundation Design of Overhead Transmission Line, and a cutting tool and a driving oil cylinder are consistent in movement direction, the movement direction is perpendicular to the hole wall, the axial size is small, a non-forming cutting forming is adopted, the cutting resistance is small, the torsion resistance of the box-shaped arm in the stress direction is high, various hole types can be flexibly dug, the working effectiveness and reliability of the drilling machine and the drilling tool are improved, a displacement sensor is installed in the cutting unit, the reaming radial footage can be measured in real time, and the digging reaming quality is guaranteed.

Description

technical field [0001] The invention relates to a pile hole cutting drilling tool, in particular to an undercut drilling tool. Background technique [0002] Existing digging and drilling tools are all forming tools with umbrella-shaped airfoil structure. According to the different power driving methods, there are two methods: mechanical driving type and hydraulic driving type. The digging and reaming adopts the step-by-step expansion of the expansion wing and the one-time operation. In the method of forming the enlarged hole, since the enlarged hole is integrally formed at one time, the shape formed by the expansion and rotation of the expansion wing is required to be the same as the shape of the entire expansion hole. Structural strength, driving mechanical strength, hydraulic driving capacity and other requirements are high. [0003] In order to popularize the excavation pile and save the construction cost of the pile foundation, the engineers and technicians continue to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/28E21B10/32E21B10/62
CPCE21B7/28E21B10/322E21B10/62
Inventor 闻志君
Owner 闻志君
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