CN1171512A

CN1171512A - Cutting and threading machine for pipe

Info

Publication number: CN1171512A
Application number: CN 96117639
Authority: CN
Inventors: 冷定刚
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-07-22
Filing date: 1996-07-22
Publication date: 1998-01-28

Abstract

A cutting and threading machine suitable for pipeline in narrow surroundings is composed of saddle-type bench fixed onto the pipeline to be cut or threaded and detachable combined circumferential tool carriage. There are chain wheels at two ends of motor shaft on bench, which drive the motor to do reciprocating movement along its carrier by chain. Said circumferential tool carriage can perform cutting and threading jobs to pipeline. Its advantages are reasonable structure, easy manufacture and especially adapting to large-diameter pipeline.

Description

Cutting and threading machine for pipe

The present invention relates to a kind of cutting of large diameter pipeline or the machinery that Pick Wire is used.What be particularly related to is a kind of underground running water pipe that is buried in, the cutting Pick Wire special-purpose machinery that uses in the installation of natural gas line and the maintenance engineering construction.

At present, the installation of most of chemical industry, oil and city tap-water, natural gas line, basically be to adopt gas cutting and welding procedure to finish, the work of particularly keeping in repair these pipelines is all the more so, the work that these utilize gas cutting and welding procedure to carry out, and the one, labor intensity is big, inefficiency, and be subjected to the narrow restriction of working environment, be difficult to guarantee the welding quality of welding quality, particularly duct bottom in installing or keeping in repair.Therefore, often occur because of the caused water supply pipe explosion of welding quality, the leakage of natural gas pipe is given and is used the enterprise and the municipal engineering of these pipelines to bring bigger loss, brings very big difficulty and harm to maintenance work simultaneously.In order to solve the difficulty of these large diameter pipelines in installation and maintenance construction, avoid the pipeline burst that causes because of problems of welded quality and the generation of gas leakage accident, I invented a kind of can install and the maintenance engineering construction in the pipeline that uses cut the Pick Wire special-purpose machinery.

The objective of the invention is in order to improve at present at oil, chemical industry and city tap-water, the installation method of natural gas pipe provides a kind of and can install or keep in repair the special-purpose cutting and threading machine for pipe tool that pipeline is used in narrow working environment.Make the installation and the maintenance of existing large diameter pipeline adopt inipple and packing matcrial to finish, thereby improve the operational safety of pipeline, prolong the working life of pipeline, reduce the maintenance cost of pipeline, avoid the generation of pipeline burst and gas leakage accident.

The objective of the invention is to be achieved through the following technical solutions.Be cut or the pipeline of Pick Wire on fix the horseback riding type Working gantry of a drive, adjustable bow curved roll speed motor of worktable band, motor reel to two ends designs the sprocket wheel of gearing has been arranged, design has had the dovetail-shaped slide plate of slip effect below motor base, and is reciprocating in the planker that this slide plate can design on frame.Below motor, be provided with the bearing that the fixed standard thread bush is used, make the to-and-fro motion that under sprocket wheel drives, can in thread bush, rotate of standard thread screw mandrel on the frame, be provided with the manual clutch of clutch action at an end of standard thread screw mandrel, utilize clutch handle can realize leaving or close up between standard thread screw mandrel and the sprocket wheel, finish cutting or Pick Wire pipeline.Standard screw mandrel below is provided with the dowel bar of a band swallow-tail form, and the dowel bar Front-end Design has two groups of friction wheels, realizes the knife rest to-and-fro motion by the friction wheels, plays feed or withdrawing effect simultaneously.The rear end Bolt Connection of dowel bar, be fixed on the slide plate of adjustable bow curved roll speed motor base, make dowel bar when adjustable bow curved roll speed motor is reciprocating, drive dowel bar and be synchronized with the movement, impel to be fixed on the circumference knife rest that is cut on the pipeline and to finish Pick Wire at the volley pipeline.The circumference tool holder designs is convenient to install or keep in repair processing for folding dress combining form structure on integrated piping.The special tool of being furnished with 4 groups of worm gears, worm structure on the circumference knife rest, this cutter contact with friction wheel can realize cutter autofeed or withdrawing at the volley, plays the cutting stabilization simultaneously.Also design on the circumference knife rest by the adjusting pinch roller of 4 groups of band springs and form, this spring forms the transient equiliblium of whole knife rest after regulating pinch roller and special tool combination.For being adapted in cutting or Pick Wire processing, on different surfaces and nonstandard pipeline, cuts or Pick Wire processing by the circumference knife rest, therefore on the circumferential surface of pipeline, also design the balance set that can roll over the dress combination is arranged, and it is tight to be cut the pipeline awl with the sunk screw of band awl, has guaranteed that circumference knife rest work in-process does steady circular movement along balance set all the time.Also design parallel movable stand at the rear side of complete machine, make cutting machine need many places to add man-hour, be convenient to move at some long scale pipelines with three groups of rollers.

The objective of the invention is to be buried in underground pipeline in order to solve some, difficulty in installation or maintenance construction, improve and design under the processing of present large diameter pipeline and the sealing situation, reasonable in design, processing method is reliable, easy to manufacture, can satisfy pipeline cutting or the Pick Wire processing in the different operating environment, carried out.

Provide embodiment below in conjunction with accompanying drawing:

Fig. 1 is a structural representation of the present invention

Fig. 2 is the side view of Fig. 1

Fig. 3 is the plan view of circle 1

As Figure 1-3, cutting and threading machine for pipe at first is fixed on bolt 31,32 is cut on the pipeline 33, utilize the sunk screw 29 of band awl that balance set 30 awls are tight, the circumference knife rest of being made up of assembling bolt 41,42, worm gear 24, worm screw cutter 25 and spring compression regulating wheel 26, sprocket wheel 27 and cutter platform 28 is fixed on and is cut on the pipeline.Utilize movable joint chain 14 sprocket wheel 1 and 27 to be installed, start the adjustable bow curved roll speed motor of forming by sprocket wheel 1, spline 2, motor shaft 3, fan wheel disc 6, rear axle sprocket wheel 74 then by chain tension gear 15,35.With the clutch on the standard thread screw mandrel of establishing on the frame 34 12 with 10 groups on handle on cutting and separating work shelves, give circumference knife rest by chain with transmission of power by the sprocket wheel on the motor shaft, the circumference knife rest is rotated along balance set make the cutting process of cutter generation pipeline.Work in-process friction wheel 19 contacts worm gear with 20, and worm gear rotates the worm screw cutter of semicircle cambered surface is moved downward, the autofeed when finishing cutting.

After the cutting of finishing pipeline, with clutch handle clutch to be dialled to Pick Wire work again and blocked, cutting machine begins the Pick Wire to pipeline, rotates with the sprocket wheel on the adjustable bow curved roll speed motor rear axle 7.By chain 8, give sprocket wheel 17 with transmission of power, drive standard screw mandrel, in standard thread cover 16, rotate, the slide plate of power section is moved backward along the dovetail planker 23 on the frame, and the dovetail dowel bar 22 on the frame being moved along dovetail groove 21 by attachment bolt 9, the friction wheel 19,20 on the dowel bar promotes the circumference knife rests and moves.When the slide plate below the motor moves when touching potentiometer switch 13, promptly finish the amount of finish of a feed.Motor produces backward rotation under the effect of potentiometer, this moment, motor slide plate and dowel bar moved under the motion of standard screw mandrel simultaneously, and assisted the circumference knife rest to move by friction wheel 36,37.When the motor slide plate moves when touching the potentiometer switch of establishing previously 11, cutting machine carries out the Pick Wire processing second time to pipeline, up to machining.Be convenient on long scale pipeline, carry out many places processing in order to make cutting and threading machine for pipe, can utilize the moving hand-rail 43 that is located on the machine under the effect of three groups of rollers 38,39,40, with the direction pulling of the frame after the loose bolts, be implemented in the continuous processing on the long scale pipeline to needs processing.

Claims

1. pipeline cutting and threading machine for pipe, comprise the horseback riding type Working gantry, can roll over the dowel bar that plays the power transmission effect below the circumference knife rest of dress combination and the frame, wherein the dowel bar front end has two groups of friction wheels that play feed or withdrawing effect, and the motor reel on the described Working gantry of its feature connects the sprocket wheel of circumference knife rest and the sprocket wheel on the standard thread screw mandrel below the Working gantry with two secondary chains respectively to two ends.

2. the pipeline cutting and threading machine for pipe described in claim 1 is characterized in that described folding dress combination circumference knife rest is to regulate pinch roller by special tool and 4 groups of springs that the worm gear more than 4, worm screw constitute.

3. the pipeline cutting and threading machine for pipe described in claim 1, an end that it is characterized in that described standard thread screw mandrel have the manual clutch that matches with sprocket wheel on the screw mandrel, control cutting or Pick Wire to pipeline by manual clutch.