Low-pressure gas steel pipe tapper
A technology of hole opener and gas, which is applied in the direction of boring/drilling, drilling/drilling equipment, portable drilling rigs, etc. It can solve the problems of no suitable construction tools, etc., and achieve the effect of simple structure and convenient use
Inactive Publication Date: 2013-04-03
蚌埠新奥燃气发展有限公司
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Problems solved by technology
[0002] The non-stop drilling and tee technology for large-diameter steel pipes has been mature and widely used. Generally, an electric drill or a motor is used as the power source to drive the active coupling joint to rotate, and the rotational force is transmitted to the main shaft through the gearbox and drives the sleeve. type drill bit, and then the main shaft and the drill bit are pushed through the hand wheel to drill, and finally the purpose of opening the hole is realized. However, there is currently no suitable construction tool for opening holes on low-pressure steel pipes with small diameters.
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[0009] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.
[0010] see figure 1 , figure 2
[0011] The low-pressure gas steel pipe hole opener provided by the present invention has a knife seat 6, and the outer side of the lower part of the sleeve-shaped knife seat 6 is provided with external threads. The upper end of the knife seat 6 passes through the feed bushing 5 threadedly connected with it, and the feed bushing 5 passes through the knife bar 2, and the knife bar 2 is equipped with a plane bearing 13 abutting against the lower end of the feed bushing 5 , The plane bearing 13 is matched with the inner hole of the knife seat 6 with clearance, and a washer 12 is arranged between the plane bearing 13 and the shaft sleeve 5 . The lower end of the cutter bar 2 is connected with a drill bit 14, and the cutter bar 2 and the drill bit 14 are threaded.
[0012] A rolling bearing 11 is pr...
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The invention discloses a low-pressure gas steel pipe tapper. The outer side of the lower part of a sleeve-shaped tool apron is provided with an external thread; a feeding shaft sleeve in threaded connection with the tool apron passes through the upper end part of the tool apron; a tool bar is penetrated in the feeding shaft sleeve; the tool bar is provided with a plane bearing abutted against the lower end of the feeding shaft sleeve; and the lower end of the tool bar is connected with a drill. When the tapper provided by the invention is used, a T-branch pipe is welded on a to-be-tapped steel pipe and is screwed with a ball valve; then, the tool apron is connected with the ball valve; a ball valve switch is turned on and ,the feeding shaft sleeve is rotated downwards; when the drill is contacted with the outer wall of the steel pipe, the tool bar is rotated to begin to tap; during tapping, the feeding shaft sleeve is continuously downwards rotated; when the steel pipe is drilled through, the feeding shaft sleeve is screwed and lifted; the ball valve is closed; and the tapper is screwed down to finish the constructions of tapping without stopping the supply of gas as well as the tee joint operation.
Description
technical field [0001] The invention relates to a pipe hole opening device, in particular to a hole opening device for a low-pressure gas steel pipe. Background technique [0002] The non-stop drilling and tee technology for large-diameter steel pipes has been mature and widely used. Generally, an electric drill or a motor is used as the power source to drive the active coupling joint to rotate, and the rotational force is transmitted to the main shaft through the gearbox and drives the sleeve. type drill bit, then the main shaft and the drill bit are advanced by the hand wheel to drill holes, and finally realize the purpose of opening holes, but there is currently no suitable construction tool for opening holes on low-pressure steel pipes with small diameters. Contents of the invention [0003] The purpose of the present invention is to provide a manually operated low-pressure gas steel pipe hole opener for the problems existing in the construction operation of overhead s...
Claims
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Login to View More IPC IPC(8): B23B41/08B23B45/06
Inventor 盛振喜
Owner 蚌埠新奥燃气发展有限公司