阅读说明：本技术 一种埋地管道的开孔工具 (Perforating tool for buried pipeline ) 是由 苏伟 周豪宸 张海华 赵城 胡华杜 张华� 林川 于 2019-09-23 设计创作，主要内容包括：本发明提供了一种埋地管道的开孔工具,属于电熔鞍型管件技术领域。它解决了现有开孔工具中电熔鞍型管件内壁受热变形报废的技术问题。本埋地管道的开孔工具包括电熔管件和竖向延伸的扳手杆,所述电熔管件内设有开孔刀具,所述扳手杆的下端具有用于与开孔刀具周向限位配合的插头,所述扳手杆的外围套设有扳手套筒,所述扳手套筒与扳手杆之间设有能将扳手套筒和扳手杆锁定固连的锁定机构,所述扳手套筒的外周面螺接套设有能与扳手套筒相对运动的固定套,所述开孔刀具的顶面中央具有沉槽,所述扳手套筒的下端能与所述沉槽的内侧壁螺接配合。本发明可避免鞍形管件开孔失效造成的浪费。(The invention provides a tapping tool for a buried pipeline, and belongs to the technical field of electric smelting saddle type pipe fittings. The technical problem that the inner wall of an electric smelting saddle type pipe fitting in an existing tapping tool is deformed and scrapped due to heating is solved. This buried pipeline's trompil instrument includes electric smelting pipe fitting and vertical extension's spanner pole, be equipped with the trompil cutter in the electric smelting pipe fitting, the lower extreme of spanner pole have be used for with the spacing complex plug of trompil cutter circumference, the peripheral cover of spanner pole is equipped with the spanner sleeve, be equipped with the locking mechanical system that can link firmly spanner sleeve and spanner pole locking between spanner sleeve and the spanner pole, the telescopic outer peripheral face spiro union cover of spanner is equipped with the fixed cover that can with spanner sleeve relative motion, the top surface central authorities of trompil cutter have the heavy groove, the telescopic lower extreme of spanner can with the inside wall spiro union cooperation of heavy groove. The invention can avoid waste caused by the failure of the hole of the saddle-shaped pipe fitting.)

1. A hole opening tool for a buried pipeline comprises an electric melting pipe fitting (1) and a vertically extending spanner rod (2), a tapping cutter (11) is arranged in the electric melting pipe fitting (1), a plug (21) which is used for being in circumferential limit fit with the tapping cutter (11) is arranged at the lower end of the wrench rod (2), it is characterized in that a wrench socket (3) is sleeved on the periphery of the wrench rod (2), a locking mechanism (4) which can lock and fixedly connect the wrench socket (3) and the wrench rod (2) is arranged between the wrench socket (3) and the wrench rod (2), the peripheral surface of the wrench socket (3) is screwed and sleeved with a fixed sleeve (5) which can move relative to the wrench socket (3), the top surface center of tapping cutter (11) has heavy groove (111), the lower extreme periphery of spanner sleeve (3) can with the inside wall spiro union cooperation of heavy groove (111).

2. the tapping tool for buried pipelines according to claim 1, further comprising a sealing sleeve (6) capable of being screwed with the outer peripheral surface of the electrofusion pipe fitting (1), wherein the lower end of the fixing sleeve (5) is fixedly connected with the sealing sleeve (6), and the outer peripheral surface of the wrench sleeve (3) is in sealing abutment with the inner side wall of the sealing sleeve (6).

3. A tapping tool for buried pipelines according to claim 2, wherein said securing sleeve (5) comprises two semi-circular split housings (51), said split housings (51) being detachably connected.

4. A boring tool for a buried pipeline according to claim 3, wherein the inner side wall of the split housing (51) has a positioning ring groove (52) extending in the circumferential direction, and the outer circumferential surface of the upper end of the sealing sleeve (6) has a flange (61), and the flange (61) is fitted with the positioning ring groove (52).

5. A tapping tool for a buried pipeline according to claim 4, wherein the flange (61) has a radially protruding locating block (62) on its outer circumference, the annular locating groove (52) has a locating groove (53) on its inner side wall, and the locating block (62) is fitted in the locating groove (53) by insertion.

6. the tapping tool for the buried pipeline according to claim 1, 2, 3, 4 or 5, wherein the locking mechanism (4) comprises a first limiting sleeve (41) sleeved on the outer peripheral surface of the wrench rod (2), the lower end of the first limiting sleeve (41) is fixedly connected with the wrench socket (3), the outer peripheral surface of the upper end of the first limiting sleeve (41) is provided with a screw hole (411) which is radially opened and can extend to the outer peripheral surface of the wrench rod (2), and a screw is screwed and matched in the screw hole (411).

7. The tapping tool for the buried pipeline according to claim 6, wherein the driving disc (42) and the second limiting sleeve (43) are screwed and sleeved on the outer peripheral surface of the wrench socket (3), the first limiting sleeve (41), the driving disc (42) and the second limiting sleeve (43) are abutted in sequence from top to bottom, and a radially extending force applying arm (421) is fixedly connected to the driving disc (42).

8. A tapping tool for buried pipeline according to claim 1 or 2 or 3 or 4 or 5, wherein the inner side wall of the wrench socket (3) has a circumferentially extending sealing ring groove (32).

9. A buried pipeline tapping tool as claimed in claim 3, 4 or 5 wherein the two separate housings (51) each have a connection hole (54), the connection holes (54) of the two separate housings (51) are opposite and in communication with each other, and a connecting member is inserted into the two opposite connection holes (54).

10. A tapping tool for a buried pipeline according to claim 1 or 2 or 3 or 4 or 5, wherein the locking mechanism (4) comprises a pin extending transversely through the wrench socket (3) and wrench rod (2).

Technical Field

The invention belongs to the field of electric smelting saddle type pipe fittings, and relates to a hole opening tool for a buried pipeline.

Background

Need use electric smelting saddle type pipe fitting in buried gas pipeline's area trompil operation in-process, through electric smelting saddle type pipe fitting product with wait to weld trunk line electric smelting welding, then carry out the trompil operation through the cooperation of the cutter in hole digger and the electric smelting saddle type pipe fitting and can realize the branch road and expand and guarantee sealed effect.

An electric smelting saddle type product is like the online electric smelting of a PE pipeline connection saddle type bypass pipe section of application publication No. CN102374355A, and it includes top cap, sealing washer, punching sword, body, heating plate, bolt and clamp plate. The pipe body is a longitudinal and transverse three-way pipe, a punching cutter is spirally installed in the vertical pipe, a saddle matched with the outer wall of the main pipe is arranged at the lower end of the vertical pipe, a transverse bypass pipe is arranged on one side of the waist of the vertical pipe, and the sealing rings are respectively embedded on the inner end surface of the top cover and the outer wall of the upper orifice of the pipe body to form a double-sealing structure. The punching cutter is a cutter with a cylindrical structure, and cutting edges are uniformly distributed on the circumference of the end face of the downward outer ring.

the hole digger is provided with a saddle bypass under-pressure tapping connecting device for a conveying pipeline, wherein the hole digger comprises a saddle bypass under-pressure tapping mechanism, wherein a type pipe connecting seat, a three-way pipe seat, a notch type pipe connecting seat, a rotary cutter connecting seat and a lock thread cap with a lock handle are connected to an electric smelting saddle bypass main body; the pipeline bypass blocking mechanism is characterized in that one end of a blocking pipe seat is connected with a three-way pipe seat, the other end of the blocking pipe seat is connected with a thrust sleeve and a handle spiral cover, a blocking plug and a blocking screw rod are arranged in the blocking pipe seat, and an anti-leakage sealing screw plug and a pipe orifice sealing cap are arranged at the straight-through pipe orifice of the electric smelting saddle type bypass main body in a connecting mode.

However, in the process of tapping operation, the tapping tool rotates to cut the pipe to be welded with the main pipe, so that a large amount of heat is generated, the thread section of the inner wall of the electric smelting saddle-shaped pipe fitting in threaded connection with the tapping tool is often melted and deformed, the tapping tool cannot continue to operate due to thread sliding, and the product is scrapped. The conventional practice for solving the above problems is considered by those skilled in the art as follows: the cooling device is additionally arranged to absorb heat generated by cutting of the tapping tool, or the internal thread section of the electric melting saddle-shaped pipe fitting is formed by injection molding of a material with a higher melting point, or the feeding speed of the tapping tool is reduced, so that the heat dissipation time is prolonged.

Disclosure of Invention

The invention provides a hole opening tool for buried pipelines aiming at the problems in the prior art, and the technical problems to be solved by the invention are as follows: how to solve the scrapped problem of the tapping failure of the electric smelting saddle type pipe fitting.

The purpose of the invention can be realized by the following technical scheme:

the utility model provides a buried pipeline's trompil instrument, includes electric smelting pipe fitting and vertical extension's spanner pole, be equipped with the trompil cutter in the electric smelting pipe fitting, spanner pole's lower extreme has and is used for the spacing complex plug with trompil cutter circumference, a serial communication port, spanner pole's peripheral cover is equipped with the spanner sleeve, be equipped with the locking mechanical system that can link firmly spanner sleeve and spanner pole locking between spanner sleeve and the spanner pole, the telescopic outer peripheral face spiro union cover of spanner is equipped with the fixed cover that can with spanner sleeve relative motion, the top surface central authorities of trompil cutter have the heavy groove, the telescopic lower extreme of spanner can with the inside wall spiro union cooperation of heavy groove.

The spanner bar is used for carrying out the trompil operation with electric smelting pipe fitting welded pipeline with the cooperation of electric smelting pipe fitting, the lower extreme of spanner bar is equipped with the plug, trompil cutter top in the electric smelting pipe fitting be equipped with the spacing complex notch of plug circumference, after trompil instrument and electric smelting pipe fitting assembly, can drive the trompil cutter along electric smelting pipe fitting inside wall and the action about trompil cutter outer peripheral face complex screw when operation spanner bar pushes down and rotates, thereby accomplish the trompil and roll back the operation. The wrench sleeve is sleeved on the periphery of the wrench rod, the locking mechanism is arranged between the wrench sleeve and the wrench rod, so that the wrench rod can independently move up and down relative to the wrench sleeve when the locking mechanism is in an unlocking state, the lower end of the wrench sleeve can be in threaded fit with a sunk groove at the top of the tapping tool through the fixing sleeve in threaded fit arranged on the outer peripheral surface of the wrench sleeve, the locking mechanism is unlocked during normal tapping, and tapping operation can be realized through the matching and downward pressing rotation of the wrench rod and the tapping tool; if when the internal thread thermal deformation phenomenon of electric smelting pipe fitting appears in normal trompil in-process, can control spanner sleeve downstream earlier to heavy groove department and rotatory and the inside wall spiro union cooperation in heavy groove, then the locking of control locking mechanical system links firmly spanner pole and spanner sleeve, like this when the rotation of operation spanner pole again steerable spanner sleeve drives trompil cutter along fixed cover up-and-down motion, thereby realize the trompil and roll back the operation, can be with the electric smelting pipe fitting reuse of smooth silk, solve overheated condemned extravagant problem that leads to.

In foretell buried pipeline's trompil instrument, the trompil instrument still includes can with the outer peripheral face spiro union of electric smelting pipe fitting complex sealing sleeve, the lower extreme of fixed cover with sealing sleeve links firmly, the telescopic outer peripheral face of spanner supports with the inside wall seal of this seal cover and leans on. Support through setting up sealed sleeve and the telescopic outer peripheral face of spanner and lean on, guarantee like this that the fluid in treating the welded tube way can not escape from the telescopic outside of spanner and cause pollution or injury risk at the trompil in-process, set up fixed cover and seal cover and link firmly, guarantee like this that fixed cover is stable with the relative position of electric smelting pipe fitting to guarantee that the telescopic accurate stability of feeding of spanner.

In the above tapping tool for buried pipelines, the fixing sleeve comprises two semicircular split housings which are detachably connected. Through setting up fixed cover including the semi-circular components of a whole that can function independently housing of two splits, can pull down two components of a whole that can function independently housings like this when the trompil operation, the telescopic motion of spanner does not receive the constraint of fixed cover can freely up-and-down motion under locking mechanical system unblock state, when the internal thread of electric smelting pipe fitting is heated and is out of shape appearing, but quick travel wrench sleeve downstream supports and leans on to counter bore department, then with components of a whole that can function independently housing assembly to wrench sleeve's outer peripheral face and with sealing sleeve link firmly, can reduce trompil preparation time greatly like this, and the.

In foretell buried pipeline's trompil instrument, the inside wall of components of a whole that can function independently housing has along the positioning ring groove of circumference extension, the outer peripheral face of sealing sleeve upper end has the ring flange, the ring flange with the positioning ring groove cooperatees. Through set up the positioning ring groove at the inside wall of components of a whole that can function independently housing to set up the ring flange and cooperate with the positioning ring groove at sealing sleeve's upper end outer peripheral face, accessible positioning ring groove and sealing sleeve form radially and axially spacing after two components of a whole that can function independently housings merge like this, guarantee that the trompil action is accurate stable.

In the above-mentioned tapping tool for buried pipelines, the outer peripheral surface of the flange plate is provided with a positioning block protruding along the radial direction, the inner side wall of the positioning ring groove is provided with a positioning groove, and the positioning block is in plug-in fit in the positioning groove. Through setting up radial bellied locating piece in the outer peripheral face of ring flange to set up constant head tank and locating piece cooperation in the inside wall of positioning ring groove, further inject fixed cover and sealing sleeve's circumferential position like this, ensure that spanner sleeve can not follow the commentaries on classics feeding fixed cover of in-process, guarantee that the trompil action is accurate stable.

In the above tapping tool for buried pipelines, the locking mechanism comprises a first limiting sleeve sleeved on the outer peripheral surface of the wrench rod, the lower end of the first limiting sleeve is fixedly connected with the wrench sleeve, the outer peripheral surface of the upper end of the first limiting sleeve is provided with a screw hole which is radially arranged and can extend to the outer peripheral surface of the wrench rod, and a screw is in threaded fit in the screw hole. The locking mechanism comprises a first limiting sleeve sleeved on the outer peripheral surface of the wrench rod, the lower end of the first limiting sleeve is fixedly connected with the wrench sleeve, and a screw hole radially extending to the periphery of the wrench rod is formed in the outer peripheral surface of the upper end of the first limiting sleeve.

In foretell buried pipeline's trompil instrument, the peripheral face spiro union cover of spanner sleeve is equipped with driving-disc and stop collar two, stop collar one, driving-disc and stop collar two from the top down support in proper order and lean on, link firmly the arm of force of exerting oneself along radial extension on this driving-disc. Through establishing driving-disc and stop collar two at the telescopic outer peripheral face spiro union cover of spanner, set up the arm of force of exerting oneself of radial extension on the driving-disc, make stop collar one, driving-disc and stop collar two support in proper order and lean on, operating personnel can exert the arm of force control spanner sleeve through the operation like this and rotate and accomplish the spiro union cooperation with the inside wall of heavy groove, and stop collar two can guarantee that the driving-disc is at rotation in-process position stability.

In the above tapping tool for buried pipelines, the inner side wall of the wrench socket has a sealing ring groove extending in the circumferential direction. Set up the sealed annular that circumference extends through the inside wall at spanner sleeve, can inlay the peripheral face of establishing sealing washer and spanner pole like this in the sealed annular groove and lean on, guarantee to treat the fluid in the welded pipe can not follow spanner sleeve's inboard escape and cause pollution or injury risk at the trompil in-process.

In the hole opening tool for the buried pipeline, the two split housings are provided with connecting holes, the connecting holes on the two split housings are opposite and communicated with each other, and connecting pieces penetrate through the two opposite connecting holes. Through set up on two components of a whole that can communicate each other just to arranging connecting hole, be convenient for like this link firmly two components of a whole that can function independently casing through using connecting pieces such as bolt or connecting pin, it is convenient to dismantle.

Compared with the prior art, the invention has the following advantages:

The tapping tool for the buried pipeline is characterized in that a wrench sleeve is sleeved on the periphery of a wrench rod, a locking mechanism is arranged between the wrench sleeve and the wrench sleeve, the wrench rod can independently move up and down relative to the wrench sleeve when the locking mechanism is in an unlocking state, a thread section is arranged on the outer peripheral surface of the middle section of the wrench sleeve, a fixing sleeve which is matched with the thread section and can be fixedly connected with an electric melting pipe fitting is arranged on the outer peripheral surface of the wrench sleeve, the lower end of the wrench sleeve can be matched with a sinking groove at the top of a tapping tool in a screwed mode, when the internal thread of the electric melting pipe fitting is heated and deformed, the wrench sleeve can be controlled to move down to the sinking groove and rotate to be matched with the inner side wall of the sinking groove in a screwed mode, then the locking mechanism is controlled to lock and fixedly connect the wrench rod and the wrench sleeve, so that when the wrench rod is operated to rotate, the problem of electric smelting pipe fitting scrap waste is solved.

Drawings

Fig. 1 is a schematic perspective view of the assembled hole opening tool for buried pipelines.

Fig. 2 is a partial structure schematic diagram of the electric smelting saddle type pipe fitting tapping tool.

fig. 3 is a schematic perspective view of the electric smelting saddle pipe fitting tapping tool at another angle.

Fig. 4 is a perspective view of the sealing sleeve.

fig. 5 is a schematic perspective view of the electrofusion pipe product.

Fig. 6 is a perspective view of a wrench socket.

In the figure, 1, an electric melting pipe fitting; 11. a hole cutter; 111. sinking a groove;

2. a spanner bar; 21. a plug;

3. a wrench socket; 31. a threaded segment; 32. sealing the ring groove;

4. A locking mechanism; 41. a first limiting sleeve; 411. a screw hole; 42. a drive disc; 421. applying a force arm; 43. a second limiting sleeve;

5. Fixing a sleeve; 51. a split housing; 52. a positioning ring groove; 53. positioning a groove; 54. connecting holes;

6. A sealing sleeve; 61. a flange plate; 62. and (5) positioning the blocks.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.