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Drilling machine capable of controlling depth of crack-arresting holes in process of repairing cracks of steel box girder

A technology for drilling depth and steel box girder, which is applied in drilling/drilling equipment, parts of boring machine/drilling machine, measurement of positioning in boring machine/drilling machine, etc. It can solve the problems of precise control of drilling depth and achieve easy disassembly with the effect of replacing

Inactive Publication Date: 2018-01-19
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Different drilling depths are required for different steel plate parts, but the current ordinary drilling machine cannot achieve the goal of precisely controlling the drilling depth

Method used

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  • Drilling machine capable of controlling depth of crack-arresting holes in process of repairing cracks of steel box girder
  • Drilling machine capable of controlling depth of crack-arresting holes in process of repairing cracks of steel box girder
  • Drilling machine capable of controlling depth of crack-arresting holes in process of repairing cracks of steel box girder

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Embodiment

[0025] The steel box girder crack repairing drilling machine that can control the depth of drilling crack hole in this embodiment is as follows: Figure 1-Figure 4 As shown, it includes a drilling device 1 and a drilling machine body 2 . The drilling device 1 mainly includes a drill bit 11 , a drilling depth control device 12 , a transmission shaft 13 and a roller bearing 14 . One end of the transmission shaft 13 is connected to the internal driving device of the drilling body 2, and the other end is connected to the drill bit 11; the drilling depth control device 12 is sleeved on the periphery of the transmission shaft 13 through the roller bearing 14, and is connected to the drilling body through the threaded port. 2 connections.

[0026] One end of transmission shaft 13 is connected with the driving device inside the drilling body 2, and the other end then offers a square clamping hole for installing the required drill bit 11 for drilling.

[0027] The drilling depth cont...

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Abstract

The invention discloses a drilling machine capable of controlling the depth of crack-arresting holes in the process of repairing cracks of a steel box girder. The drilling machine comprises a drillingmachine body and a drilling working device, wherein the drilling working device mainly comprises a drill bit, a drilling depth control device, a transmission shaft and a roller bearing; one end of the transmission shaft is connected with a driving device inside the drilling machine body, and the other end of the transmission shaft is connected with the drill bit; and the drilling depth control device is connected with the periphery of the transmission shaft in a sleeving mode through the roller bearing, and is connected with the drilling machine body through a sleeve. According to the drilling machine, the depth of the crack-arresting holes is accurately controlled in the process of repairing the cracks of the steel box girder, so that the phenomenon of excessive drilling or mistaken drilling into adjacent steel plates is avoided; and meanwhile, the drill bit and the drilling depth control device are both assembled and are easy to disassemble and replace.

Description

technical field [0001] The invention belongs to the technical field of bridge maintenance, and relates to a steel box girder crack repair drilling machine capable of controlling the drilling depth. Background technique [0002] Steel box girder itself has the advantages of high torsional rigidity, high strength, light weight, and good integrity, so it has been widely promoted and applied in bridge construction. However, with the increase of the service life of the bridge, the cracking problem of the steel box girder is becoming more and more serious, especially at the connecting welds of various structural details. In order to keep the bridge structure in a safe state during the operation period, the current common method is to take temporary crack arrest measures, that is, use a drilling machine to drill crack arrest holes at the tip of the crack, and when the crack expands further, other technical means are used to repair the crack. Fatigue cracks are further repaired. ...

Claims

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Application Information

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IPC IPC(8): B23B49/00B23B47/00
CPCB23B47/00B23B49/00
Inventor 吉伯海傅中秋孔祥明姚悦
Owner HOHAI UNIV
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