Diameter adjustable drill bit and drilling machine

A technology of drill bit and diameter adjustment, applied in the direction of drill bit, drilling equipment and method, drilling equipment, etc., can solve the problem of non-adjustable drill diameter, etc., and achieve the effect of guaranteed effect and reliable structure

Inactive Publication Date: 2019-04-19
JIUJIANG VOCATIONAL & TECHN COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0019] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a drill bit and a hol

Method used

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  • Diameter adjustable drill bit and drilling machine
  • Diameter adjustable drill bit and drilling machine
  • Diameter adjustable drill bit and drilling machine

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Embodiment Construction

[0081] The implementation of the present invention will be illustrated by specific specific examples below, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification.

[0082] see Figure 1 to Figure 3 . It should be noted that the structures, proportions, sizes, etc. shown in the drawings attached to this specification are only used to match the content disclosed in the specification, for those who are familiar with this technology to understand and read, and are not used to limit the implementation of the present invention. Limiting conditions, so there is no technical substantive meaning, any modification of structure, change of proportional relationship or adjustment of size, without affecting the effect and purpose of the present invention, should still fall within the scope of the present invention. within the scope covered by the disclosed technical content. At the same ti...

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Abstract

The invention provides a diameter adjustable drill bit and a drilling machine and solves the problem of drilling diameter unadjustability in the prior art. The diameter adjustable drill bit comprisesat least two movable tool rests, a tool handle, a diameter adjusting module, an expansion core and a tool core, wherein the at least two movable tool rests are arranged in a circular mode and form aninternal big-end-up conical structure and an external big-end-up structure, and the outer wall and the lower end surface of every movable tool rest are provided with a plurality of tool bits; the lowend of the tool handle is provided with notches corresponding in number to the movable tool rest, and the movable tool rests are rotatingly arranged at the notches; the diameter adjusting module axially penetrates through the central hole of the tool handle, and the lower end of the diameter adjusting module is connected with the movable tool rests through connecting rods for driving the connecting rods to move up and down; the expansion core is in a big-end-up frustum structure, the upper end of the expansion core is fixed to the diameter adjusting module, and the outer wall of the expansioncore is in contact with the inner walls of the movable tool rests; the tool core is fixedly connected to the expansion core.

Description

technical field [0001] The invention relates to the field of construction equipment, in particular to a drill bit with adjustable drilling diameter and a hole digging machine. Background technique [0002] Manually excavated piles are also called "artificial hole piles", which refer to the foundation construction of houses, bridges and other projects. Due to the needs of pile formation, the pile foundation is excavated by manpower according to the design and needs to be poured with reinforced concrete below the ground. The process of spatial location. Manual excavation of piles is suitable for pile foundations with a diameter of more than 1m. Drilled piles or flush piles should be used for piles with a diameter of less than 1m. [0003] (1), fixed-point release [0004] According to the design drawings, determine the center point of the hole pile and the excavation line (including the retaining wall) of the hole pile with lime circle [0005] (2), forming holes [0006]...

Claims

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Application Information

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IPC IPC(8): E21B10/32E21B10/43E21B7/02E21B7/28E21B15/00
CPCE21B7/021E21B7/023E21B7/28E21B10/32E21B10/43E21B15/003
Inventor 杨铭键倪丽江璐余德孙郭阳明
Owner JIUJIANG VOCATIONAL & TECHN COLLEGE
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