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CN-116025273-B - Drilling tool for forming rectangular hole and method for forming rectangular hole

CN116025273BCN 116025273 BCN116025273 BCN 116025273BCN-116025273-B

Abstract

The invention relates to a drilling tool for forming rectangular holes and a method for forming rectangular holes, comprising a rectangular fixing frame capable of moving up and down, four milling and digging devices which are respectively arranged at four corners of the top end of the fixing frame and used for trimming initial holes so as to obtain four corners of the rectangular holes, and a trimming device which is arranged at the bottom end of the fixing frame and capable of moving along the front-back direction and the left-right direction of the fixing frame and used for trimming the initial holes so as to obtain four sides of the rectangular holes. According to the invention, the initial hole is trimmed by the trimming device to obtain four sides of the rectangular hole, and the initial hole is trimmed by the milling and digging device to obtain four corners of the rectangular hole, so that the rectangular hole is obtained.

Inventors

  • TANG XI
  • LIAO JINJUN
  • LIU JINSHU
  • LIU KEKE
  • WANG YONG
  • ZHAO DONGZHE

Assignees

  • 中国铁建重工集团股份有限公司

Dates

Publication Date
20260512
Application Date
20230226

Claims (8)

  1. 1. A drilling tool for rectangular hole forming, comprising: A fixing frame (3) capable of moving up and down; The milling and digging devices (2) are used for trimming the initial holes to obtain four corners of a rectangular hole (5), and the four milling and digging devices (2) are arranged at the top end of the fixing frame (3) and are in rectangular arrangement; trimming means (4) for trimming the initial hole to obtain four sides of the rectangular hole (5), the trimming means (4) being mounted at the bottom end of the mount (3) and being movable in the front-rear direction and the left-right direction of the mount (3); the milling and digging device (2) comprises a cylindrical milling and digging head (1) and a first rotary driver for driving the milling and digging head (1) to axially rotate around the milling and digging head; The milling head (1) can trim two edges of the same corner of the rectangular hole (5) at the same time, the outer side and the outer end of the milling head (1) extend out of the fixing frame (3), and the axial direction of the milling head (1) is arranged along the left-right direction or along the front-back direction; the trimming device (4) comprises a rock drilling machine (11) capable of moving along the front-back direction and the left-right direction of the fixing frame (3), and the rock drilling machine (11) can also rotate around the up-down direction so as to trim the initial hole, so that four sides of the rectangular hole (5) are obtained.
  2. 2. Drilling tool for rectangular hole shaping according to claim 1, characterized in that the deburring device (4) further comprises first moving means for driving the rock drill (11) in the left-right direction of the holder (3).
  3. 3. A drilling tool for rectangular hole forming as recited in claim 2, wherein the first moving means comprises: The first mounting plate is mounted at the bottom of the fixing frame (3); the first driving chain wheel and the first driven chain wheel (15) are respectively arranged at the left end and the right end of the first mounting plate, and a first transmission chain (7) capable of driving the rock drilling machine (11) to move along the left direction and the right direction is sleeved on the first driving chain wheel and the first driven chain wheel (15).
  4. 4. A drilling tool for rectangular hole shaping according to claim 3, characterized in that the deburring means (4) further comprises second moving means for driving the rock drill (11) in the front-rear direction of the holder (3); the second moving device comprises a second mounting plate, the top end of the second mounting plate is connected with the bottom of the first transmission chain (7), a second driving sprocket and a second driven sprocket (16) are respectively mounted at the front end and the rear end of the second mounting plate, and a second transmission chain (8) capable of driving the rock drilling machine (11) to move along the front-rear direction is sleeved on the second driving sprocket and the second driven sprocket (16).
  5. 5. Drilling tool for rectangular hole shaping according to claim 4, characterized in that the deburring means (4) further comprises rotary driving means for driving the rock drilling machine (11) in up-and-down direction; The rotary driving device comprises a bottom plate (10), a first gear (9), a second gear meshed with the first gear (9) and a second rotary driver for driving the second gear to rotate; The bottom plate (10) is arranged between the second transmission chain (8) and the rock drilling machine (11); the first gear (9) is rotationally connected to the bottom of the bottom plate (10) and can drive the rock drilling machine (11) to rotate around the vertical direction; the second rotary drive is fixed to the base plate (10).
  6. 6. The drilling tool for rectangular hole forming according to any one of claims 1 to 5, further comprising a connecting frame mounted in the middle of the top end of the fixing frame (3), wherein the connecting frame is connected with a lifting tool, so that the fixing frame (3) can drive the trimming device (4) and the milling device (2) to move up and down.
  7. 7. A method of forming rectangular holes using the drilling tool for rectangular hole forming according to any one of claims 1 to 6, comprising the steps of: S1, placing the drilling tool for forming the rectangular hole at the orifice of the initial hole, and slowly moving the drilling tool for forming the rectangular hole downwards, wherein in the downwards moving process, the four sides of the initial hole are trimmed by a rock drilling machine (11) so as to obtain a trimmed hole; S2, four milling and digging devices (2) respectively trim four corners of the trimming hole to obtain a rectangular hole (5).
  8. 8. The method of forming a rectangular aperture as recited in claim 7, wherein, S1 comprises that a first transmission chain (7) drives a rock drilling machine (11) to move in the left-right direction, and a second transmission chain (8) moves in the front-back direction so as to trim an initial hole, so that four sides of a rectangular hole are obtained.

Description

Drilling tool for forming rectangular hole and method for forming rectangular hole Technical Field The invention relates to the technical field of drilling equipment, in particular to a drilling tool for forming rectangular holes and a method for forming the rectangular holes. Background When drilling soil layers or rock layers, rectangular holes are often required to be drilled, two methods for drilling the rectangular holes in the prior art are adopted, namely, manually using small-sized drilling equipment to carry out in-hole trimming so as to obtain the rectangular holes, manually using a rotary drilling machine to drill an initial hole formed by at least one round hole in advance, erecting lifting equipment at the orifice of the initial hole, and manually trimming the hole on the lifting equipment so as to obtain the rectangular holes. Because the soil layer structure or the rock structure cannot be determined, the drilled hole has the risk of collapse, and the two construction methods all need to be manually operated in the hole, thus the personal safety is threatened, the working efficiency is low, and the labor intensity is high. Disclosure of Invention First, the technical problem to be solved In view of the above-mentioned shortcomings and disadvantages of the prior art, the present invention provides a drilling tool for forming rectangular holes and a method for forming rectangular holes, which solve the technical problems of low working efficiency and high labor intensity when an initial hole formed by at least one round hole is manually trimmed into a rectangular hole. (II) technical scheme In order to achieve the above purpose, the main technical scheme adopted by the invention comprises the following steps: a drilling tool for rectangular hole forming, comprising: a fixing frame capable of moving up and down; Four milling and digging devices for trimming the initial hole to obtain four corners of a rectangular hole, wherein the four milling and digging devices are arranged at the top end of the fixing frame and are in rectangular arrangement; And the trimming device is arranged at the bottom end of the fixing frame and can move along the front-back direction and the left-right direction of the fixing frame. Preferably, the milling and digging device comprises a cylindrical milling and digging head and a first rotary driver for driving the milling and digging head to axially rotate around the milling and digging head; The milling and digging head can trim two edges of the same corner of the rectangular hole at the same time, the outer side and the outer end of the milling and digging head extend out of the fixing frame, and the axial direction of the milling and digging head is arranged along the left-right direction or along the front-back direction. Preferably, the deburring device comprises a rock drill movable in a front-rear direction and a left-right direction of the fixing frame, and the rock drill is further rotatable in an up-down direction to trim the initial hole to obtain four sides of the rectangular hole. Preferably, the trimming device further comprises a first moving device for driving the rock drilling machine to move along the left-right direction of the fixing frame. Preferably, the first mobile device comprises: the first mounting plate is arranged at the bottom of the fixing frame; The first driving sprocket and the first driven sprocket are respectively arranged at the left end and the right end of the first mounting plate, and a first transmission chain capable of driving the rock drilling machine to move along the left direction and the right direction is sleeved on the first driving sprocket and the first driven sprocket. Preferably, the deburring device further comprises a second moving device for driving the rock drilling machine to move along the front-back direction of the fixing frame; The second moving device comprises a second mounting plate, the top end of the second mounting plate is connected with the bottom of the first transmission chain, a second driving sprocket and a second driven sprocket are respectively mounted at the front end and the rear end of the second mounting plate, and the second driving sprocket and the second driven sprocket are sleeved with a second transmission chain capable of driving the rock drilling machine to move along the front-rear direction. Preferably, the deburring device further comprises a rotary driving device for driving the rock drilling machine to rotate around the up-down direction; the rotary driving device comprises a bottom plate, a first gear, a second gear meshed with the first gear and a second rotary driver for driving the second gear to rotate; The bottom plate is arranged between the second transmission chain and the rock drilling machine; the first gear is rotationally connected to the bottom of the bottom plate and can drive the rock drilling machine to rotate around the vertical direction; the second rotary d