Transverse-broaching device

A lateral and appliance technology, applied in drilling equipment, earthmoving, drill bits, etc., can solve the problems of uncontrollable opening angle of airfoil drill pieces, inability to form enlarged holes of different diameters, and easy damage.

Active Publication Date: 2014-03-26
CHINA RAILWAY 24TH BUREAU GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this type of reaming drill bit is that during the rotation of the drill pipe, the opening angle of the airfoil drill bit is uncontrollable, it is difficult t

Method used

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Examples

Experimental program
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Effect test

Embodiment

[0019] Embodiment: This embodiment specifically relates to a horizontal widening device, the principle of which is to design a special horizontal drill bit in combination with the power components of the existing rotary drilling rig, so that it can perform the widening operation at the bottom of the hole pile.

[0020] Such as figure 1 , 2 As shown, the horizontal widening device has a rotating shaft 9, the rotating shaft 9 is connected with the existing rotary drilling rig power components above it to obtain the motive force, the bottom of the rotating shaft 9 is a disc-shaped rotating disk 1, and the rotating shaft 9 is used for The rotating disk 1 is driven to rotate, and the outer diameter of the rotating disk 1 is the same as the diameter of the drilled pile; a soil cutting arm 3 is horizontally arranged on the upper surface or the lower surface of the rotating disk 1, and the fixed end of the soil cutting arm 3 passes through the The hinge shaft 2 is hinged and fixed to...

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PUM

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Abstract

The invention discloses a transverse-broaching device. The transverse-broaching device is provided with a rotating shaft, and is characterized in that the transverse-broaching device further comprises a rotating table, an earth cutting arm and a telescopic arm, the rotating table is driven by the rotating shaft to rotate, the outer contour of the earth cutting arm is an arc, the fixed end of the earth cutting arm is hinged and fixed to the rotating table through a hinge shaft, the other end of the earth cutting arm is hinged to the telescopic end of the telescopic arm through a hinge shaft, and the fixed end of the telescopic arm is fixedly connected with the rotating table. The transverse-broaching device has the advantages that the transverse-broaching device is simple in structure and capable of carrying out transverse broaching on any position of a pile body, the earth cutting arm can be driven by the telescopic arm to unfold outwards at any time so as to adjust and enlarge radii as required, and the earth cutting arm is stable in stressed structure, not prone to damage and high in broaching efficiency.

Description

technical field [0001] The invention relates to a hole reaming device, in particular to a transverse widening device for enlarging the pile body or bottom of a cast-in-place pile. Background technique [0002] Prefabricated tubular piles are a pile type with fast construction speed and reliable quality, but it is difficult to press the piles in silt and silt sand and other strata, and it is not easy to press the piles to the required strata, so it cannot fully play the role of the middle end bearing force of its geological structure , can not provide larger single pile bearing capacity, can not be popularized and used in high-rise buildings in many areas, but have to adopt the bored pile with slow construction speed and high cost. In order to improve the bearing capacity of the bored pile, the bottom of the pile is reamed in a specially designed pile type. [0003] Currently known devices that can ream holes at the bottom of cast-in-situ piles mainly realize reaming by sett...

Claims

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Application Information

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IPC IPC(8): E21B10/32
Inventor 钱寅星赵斌翁志坚
Owner CHINA RAILWAY 24TH BUREAU GRP
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