CN113639098A - Krah pipe socket joint electric melting connection structure and construction method thereof - Google Patents

Abstract

The invention discloses an electric melting connection structure of a carat pipe socket joint, wherein a quick installation mechanism is arranged outside a pipe bell mouth, and the quick connection mechanism comprises a tightening mechanism for tightening a steel belt, a displacement mechanism for enabling the pipe bell mouth and the pipe spigot to be close to each other and an electric melting welding machine for being electrically connected with an electric fuse; the displacement mechanism comprises a first pulling component and a second pulling component, wherein the first pulling component is connected to the carat pipe where the pipe socket is located, and the second pulling component is connected to the carat pipe where the pipe socket is located. Through adopting above-mentioned technical scheme, first tractive subassembly and second tractive subassembly are connected respectively on the carat pipe at tubular product bellmouth and tubular product socket place, utilize first tractive subassembly and second tractive subassembly to make two carat pipes be close to each other, are convenient for at narrow and small pipeline inslot quick travel carat pipe, and do not need lifting device or connect chain block, have improved the efficiency of construction.

Description

Krah pipe socket joint electric melting connection structure and construction method thereof

Technical Field

The invention relates to the field of pipeline connection electric melting, in particular to a carat pipe socket joint electric melting connection structure and a construction method thereof.

Background

The Krah pipe is a high-density polyethylene (HDPE) winding structure wall pipe formed by hot winding. The wall pipe is a special structure wall pipe with high external pressure resistance, which is prepared by taking high-density polyethylene resin as a main raw material, adopting a hot winding poplar type process and taking a polypropylene (PP) single-wall corrugated pipe as a supporting structure.

The Kela pipe is mainly welded by socket electric hot melting, the pipe is connected by a socket pre-buried electric fuse and socket electric melting connection technology made of the same material at the socket, the connection quality is high, the interface has zero leakage, the operation safety of a pipeline system is ensured, the service life of a road is prolonged, and meanwhile, underground water sources and soil are effectively protected from being polluted.

In the related technology, the carat pipes are connected by mutually inserting and inserting two carat pipes with electric fuses pre-embedded in sockets, bandages are respectively bound on the two carat pipes in the inserting and inserting process, and then the two carat pipes are mutually close to each other by tightening a chain block to realize inserting and inserting; then sheathe the steel band in the interface and adopt the tensioner to tighten up the interface, then be connected to the electric fuse welding machine with the electric fuse wiring end on, heat two carat pipe junction and realize the electric fusion welding.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: because the weight of single carat pipe is heavier, when two adjacent carat pipes socket joint each other, all need with the help of assistance such as chain block, bandage, consequently all need operate outside the slot and then put into the slot again, this work flow is on the one hand more wastes time and energy, and the in-process of putting into the slot under the on the other hand can buckle carat pipe junction, has increased the damaged probability of junction. There is therefore room for improvement.

Disclosure of Invention

In order to carry out quick electric smelting connection to adjacent carat pipe in the slot, the application provides a carat pipe socket joint electric smelting connection structure and construction method thereof.

The application provides a pair of carat pipe socket joint electric smelting connection structure adopts following technical scheme:

a Kera pipe socket and spigot electric melting connecting structure comprises a pipe bell mouth and a pipe spigot which are mutually socket jointed, electric fuses are pre-embedded in the inner peripheral surface of the pipe bell mouth, a circular steel belt is sleeved outside the pipe bell mouth, a quick mounting mechanism is arranged outside the pipe bell mouth, and the quick connecting mechanism comprises a tightening mechanism for tightening the steel belt, a displacement mechanism for enabling the pipe bell mouth and the pipe spigot to be close to each other and an electric melting welding machine for being electrically connected with the electric fuses; the tightening mechanism comprises a positioning block and a moving block which is connected with the positioning block in a sliding manner, one end of the steel belt is fixedly connected with the positioning block, the other end of the steel belt is detachably connected with the moving block, and the radius of a circular ring enclosed by the steel belt is reduced when the moving block moves towards the direction far away from the positioning block; the displacement mechanism comprises a first pulling component and a second pulling component, wherein the first pulling component is connected to the carat pipe where the pipe socket is located, and the second pulling component is connected to the carat pipe where the pipe socket is located.

Through adopting above-mentioned technical scheme, tightening mechanism is used for connecting the steel band and as displacement mechanism and electric fusion welding machine's connecting body, makes each independent mechanism integration be quick installation mechanism, is convenient for the bulk movement with install between adjacent carat pipe. The tightening mechanism comprises a positioning block and a moving block which move relatively, so that when two ends of the steel belt are fixed on the positioning block and the moving block respectively, the moving block can be moved relative to the positioning block, the steel belt is tightened to tightly hold the pipe bellmouth, and the effect of mutually hooping the pipe bellmouth and the pipe socket is achieved. First tractive subassembly and second tractive subassembly are connected respectively on the carat pipe at tubular product bellmouth and tubular product socket place, utilize first tractive subassembly and second tractive subassembly to make two carat pipes be close to each other, are convenient for at narrow and small pipeline ditch inslot quick travel carat pipe, and do not need hoisting equipment or connect chain block, have improved the efficiency of construction.

Preferably, the electric fuse is divided into two circles and is mutually connected in series and conducted, a stepped groove is concavely arranged on the inner peripheral surface of the pipe bellmouth close to the opening, a clamping strip in annular arrangement is further protruded on the inner peripheral surface of the pipe bellmouth, and a clamping groove used for clamping the clamping strip with the clamping strip is concavely arranged on the outer peripheral surface of the pipe socket; two parts of the electric fuse are respectively embedded in the stepped groove and the surface of the clamping groove.

Through adopting above-mentioned technical scheme, ladder groove and joint groove are used for placing the round of electric fuse respectively to when tubular product bellmouth and tubular product socket hold the time of inserting each other, make joint strip and joint groove joint each other and carry out temporary location to two carat pipes through deformation. Then the carat pipe of rethread electric fuse's heating messenger ladder groove and joint groove department melts and welds each other to dual connection has further improved the leakproofness when two carat pipes link to each other, and the show location of joint strip and joint groove also does benefit to two carat pipes and can not shift when heating.

Preferably, the positioning block is in threaded connection with two groups of adjusting screws which are parallel to each other, and the adjusting screws penetrate through the moving block and are in rotating connection with the moving block; the steel band runs through the moving block, and the moving block is in threaded connection with a jackscrew, the end of which is tightly abutted against the steel band.

By adopting the technical scheme, the adjusting screw rod is rotationally connected with the moving block and can drive the moving block to move, and particularly, a thrust bearing and other connecting modes can be adopted; therefore, the moving block is close to or far away from the positioning block by rotating the adjusting screw rod. The steel band runs through the movable block and is fixed with the movable block through the mode that the jackscrew supports the tight steel band to when the movable block moves to the direction of keeping away from the locating piece, the diameter of the ring that the steel band encloses also reduces, realizes the effect of tightening up the pipeline bellmouth.

Preferably, the locating piece both sides are stretched out and are had the bracing piece parallel with the carat pipe axis, first tractive subassembly and second tractive subassembly include two sets of arc poles respectively, arc pole one end is articulated with the bracing piece, and the nock of adjacent arc pole sets up in opposite directions, and two sets of adjacent arc poles are used for the outer peripheral face of centre gripping carat pipe.

Through adopting above-mentioned technical scheme, the bracing piece is used for linking into the main part with first tractive subassembly and second tractive subassembly and locating piece, and wherein two sets of arcs are mouthful in opposite directions and jointly are used for the periphery of centre gripping carat pipe with bracing piece articulated arc pole, through the ripple joint with carat pipe outer peripheral face to when first tractive subassembly and second tractive subassembly are close to each other, can drive two sets of carat pipes and be close to each other.

Preferably, the arc pole with bracing piece articulated one end is stretched out to the direction of keeping away from the nock and is had the control part, and when the control part of two adjacent arc poles was close to each other, the nock of two adjacent arc poles also was close to each other, was used for the ligature location rope between two adjacent control parts.

Through adopting above-mentioned technical scheme, control portion and arc pole integrated into one piece to the arc pole also can want to correspond to the direction rotation toward relative bracing piece centrosymmetric when rotating control portion, thereby the nock of two arc poles also is close to each other when two control portions are close to each other, consequently ligature location rope again behind the centre gripping control portion can make the nock of arc pole centre gripping carat pipe always, thereby can press from both sides tight carat pipe and remove.

Preferably, the outer peripheral face of each arc-shaped rod is fixed with a limiting block, a moving screw rod is arranged between the arc-shaped rods, located on the same side of the krah pipe, of the first drawing component and the second drawing component, the moving screw rods are in threaded connection with the limiting blocks of the two sets of opposite arc-shaped rods respectively, the screw directions of the moving screw rods are opposite, and the two sets of opposite arc-shaped rods are close to or far away from each other when the moving screw rods rotate.

Through adopting above-mentioned technical scheme, the stopper is fixed with the arc pole, realizes being close to each other through rotating the removal nut between the just right stopper to the mode that is close to each other or keeps away from through driving two just right movable blocks drives arc pole centre gripping carat pipe and is close to each other or keeps away from, and the rotating handle can be fixed to the tip of removal screw rod, and convenient to use person holds or rotates through instrument equipment.

Preferably, the shape of arc pole is the heliciform the same with carat pipe outer peripheral face ripple, when the centre gripping carat pipe of arc pole with carat pipe outer peripheral face ripple laminating.

Through adopting above-mentioned technical scheme, thereby set up the arc pole into the heliciform and can laminate the outer peripheral face blew of carat pipe better to can reduce local pressure when managing the application of force to the carat, reduce the condition that causes the destruction to the carat pipe.

Preferably, the outer peripheral surface of the pipe socket is provided with an annular limiting groove for embedding the steel belt.

Through adopting above-mentioned technical scheme, the spacing groove is used for fixing a position the steel band, reduces the steel band when tightening up the steel band and shifts and lead to the condition that can not fine tighten up the bell and spigot, and then is favorable to improving the welding leakproofness between tubular product bellmouth and the tubular product socket.

A construction method of a carat pipe spigot-and-socket joint electric melting connection structure is characterized by comprising the following steps: the method comprises the following steps:

the method comprises the following steps: excavating a carat pipe pipeline groove;

step two: hoisting the Kera pipe lower groove with the embedded electric fuse;

step three: cleaning dirt on a pipe socket and a pipe spigot;

step four: connecting the carat pipes, namely installing a quick installation mechanism between two adjacent carat pipes, placing a tightening mechanism of the quick installation mechanism above a pipe socket, and simultaneously connecting a first traction mechanism and a second traction mechanism of a displacement mechanism with pipe bodies of the two carat pipes respectively;

step four: after the displacement mechanism pulls the two groups of the Kela pipes to approach each other until the pipe bellmouth and the pipe spigot are mutually inserted, the tightening mechanism hoops the pipe bellmouth with the steel strip and simultaneously electrically connects the electric fuse with the electric fuse welding machine;

step five: after the pipe socket and the pipe socket are mutually welded, cutting off the electric connection between the electric fuse and the electric fusion welding machine, and naturally cooling to normal temperature;

step six: backfilling the pipeline trench;

step seven: krah pipe water shut-off experiment.

Through adopting above-mentioned technical scheme, directly connecting two carat pipes in pipeline slot through quick mounting structure, realize the installation in narrow and small space, compare current adoption hoist and mount or with chain block towed mode, take up an area of the space littleer and install fast. And current carat pipe is connected after subaerial and is hung into the pipeline slot again, and the in-process carat pipe of hoist and mount leads to easily at the junction crooked because self dead weight, leads to the junction damaged, seepage easily, consequently the construction method of this application directly with the carat pipe transfer to pipeline slot after connecting again, can effectively reduce the junction because of the crooked damaged condition of hoist and mount, and the installation is quicker, reduction of erection time.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the carat pipes which are placed into the pipeline groove downwards are close to each other, inserted and connected in the pipeline groove in a hot melting mode through the rapid installation mechanism, compared with the manual chain block traction connection mode, the rapid installation mechanism has the advantages of being small in operation space and rapid in connection, an electric fusion welding machine is installed on the positioning block, integrated operation is facilitated, and the efficiency of connecting the two carat pipes is further improved;

2. connect the carat pipe through setting up in pipeline ditch inslot, compare and hoist the construction method who transfers to pipeline ditch groove again after connecting subaerial, have the technological effect that reduces the damaged seepage of junction between the carat pipe among the hoist and mount process, reduce the carat pipe and buckle to installation effectiveness is higher.

Drawings

FIG. 1 is a schematic overall structure of the present application;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is a schematic structural view of the quick-mount mechanism of the present application;

FIG. 4 is a partial cross-sectional view of a joint between adjacent carats of the present application.

Description of reference numerals:

1. a Krah pipe; 11. a pipe bell mouth; 111. a stepped groove; 112. a clamping strip; 113. a limiting groove; 12. a pipe socket; 121. a clamping groove; 13. an electric fuse; 14. a steel belt; 2. a quick mounting mechanism; 21. a tightening mechanism; 22. positioning blocks; 23. a moving block; 24. adjusting the screw rod; 25. carrying out top thread; 26. a support bar; 31. a first pulling assembly; 32. a second pulling assembly; 33. an arcuate bar; 34. a control unit; 35. a limiting block; 36. moving the screw; 4. an electric fusion welding machine.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

As shown in fig. 1 to 2, the embodiment of the present application discloses a carat pipe 1 spigot-and-socket electrofusion connection structure, which includes two carat pipes 1 with opposite ends, the carat pipe 1 is made of high molecular polymer, a thread-shaped protrusion is fixed on the outer peripheral surface, two ends of the carat pipe 1 are respectively provided with a pipe socket 11 and a pipe socket 12, and the two carat pipes 1 are mutually spigot-and-socket connected through the pipe socket 11 and the pipe socket 12.

The pipe bellmouth 11 is externally sleeved with a circular steel belt 14, a quick mounting mechanism 2 is mounted at the joint between the adjacent krah pipes 1, and the quick mounting mechanism comprises a tightening mechanism 21 for tightening the steel belt 14, a displacement mechanism for enabling the pipe bellmouth 11 and the pipe socket 12 to be close to each other and an electric fuse welder 4 electrically connected with an electric fuse 13.

As shown in fig. 2 to 3, the tightening mechanism 21 includes a positioning block 22 and a moving block 23 slidably connected to the positioning block 22, the positioning block 22 is threadedly connected to two sets of adjusting screws 24 parallel to each other, and the adjusting screws 24 penetrate through the moving block 23 and are rotatably connected to the moving block 23. Therefore, when the adjusting screw 24 rotates, the adjusting screw 24 extends and retracts into the positioning block 22, and the moving block 23 is driven to move.

One end of the steel belt 14 is fixedly connected with the positioning block 22, the other end of the steel belt 14 is detachably connected with the moving block 23, the steel belt 14 penetrates through the moving block 23, a jackscrew 25 is connected to the moving block 23 in a penetrating mode, the end of the jackscrew abuts against the steel belt 14, and the steel belt 14 is detachably connected with the moving block 23 in a manner that the jackscrew 25 abuts against the steel belt. When the moving block 23 moves in a direction away from the positioning block 22, the radius of the circular ring surrounded by the steel belt 14 is reduced, so that the effect of tightly holding the pipe socket 11 and the pipe socket 12 is realized.

Two sides of the positioning block 22 are extended with supporting rods 26 parallel to the axis of the carat pipe 1, and the displacement mechanism comprises a first pulling component 31 connected to the carat pipe 1 where the pipe socket 11 is located and a second pulling component 32 connected to the carat pipe 1 where the pipe socket 12 is located. First tractive subassembly 31 and second tractive subassembly 32 include two sets of arc poles 33 respectively, and the camber axis level of arc pole 33 has just set up, and the top and the bracing piece 26 of arc pole 33 are articulated, and the thermovent of adjacent arc pole 33 sets up in opposite directions, and two sets of adjacent arc poles 33 make up into the thermovent that can open for the outer peripheral face of centre gripping pipe-clamping. The shape of the arc rod 33 is set to be spiral as the same as the corrugation of the outer peripheral surface of the carat pipe 1, and the arc rod 33 is attached to the corrugation of the outer peripheral surface of the carat pipe 1 when the carat pipe is clamped. Thereby being more beneficial to the displacement of the arc-shaped rod 33 applying horizontal acting force to the carat pipe 1.

The arc pole 33 stretches out to the direction of keeping away from the arc mouth with bracing piece 26 articulated one end has shaft-like control part 34, control part 34 and arc mouth are all around the axis rotation of bracing piece 26 and the center piles up, when the control part 34 of two adjacent arc poles 33 is close to each other, the arc mouth of two adjacent arc poles 33 also is close to each other, consequently can be through rotating control part 34 or the distance between the fixed adjacent control part 34, realize the centre gripping to carat pipe 1 and loosening, can be used to ligature location rope between two adjacent control parts 34, fix a position the distance between the control part 34 through the location rope, and then realize keeping two arc poles 33 to centre gripping the effect of carat pipe 1 all the time.

Wherein the outer peripheral face of the arc rod 33 far away from the clamping pull pipe is fixed with a limiting block 35, a movable screw 36 is arranged between the arc rods 33 of the first pulling component 31 and the second pulling component 32 which are positioned on the same side of the carat pipe 1, and two ends of the movable screw 36 are in threaded connection with the limiting blocks 35 of the two sets of arc rods 33 which are just opposite and have opposite screw directions, so that the two sets of arc rods 33 which are just opposite are close to or far away from each other when the movable screw 36 rotates. When two carat pipes 1 are connected, two sets of moving screws 36 are simultaneously rotated on two sides of each carat pipe 1, and the two sets of carat pipes 1 are clamped between the first drawing assembly 31 and the second drawing assembly 32 to be close to or far away from each other, so that socket connection of the adjacent carat pipes 1 is realized.

As shown in fig. 3 to 4, a stepped groove 111 is concavely provided on an inner peripheral surface of the tube socket 11 near the opening, a clamping strip 112 with a ring is further protruded from the inner peripheral surface of the tube socket 11, a clamping groove 121 for clamping with the clamping strip 112 is concavely provided on an outer peripheral surface of the tube socket 12, when the clamping strip 112 is clamped with the clamping groove 121, the inner peripheral surface of the tube socket 11 is attached to the outer peripheral surface of the tube socket 12, and the clamping strip 112 is slightly deformed when clamped with the clamping groove 121. The inner peripheral surface of tubular product bellmouth 11 has still pre-buried electric fuse 13, and electric fuse 13 divide into two rings and establishes ties each other and switches on, and two parts of electric fuse 13 are pre-buried respectively in stepped groove 111 and the surface of joint strip 112, and electric fuse 13 is snakelike winding form and pastes the inner peripheral surface at tubular product bellmouth 11, and electric fuse 13 stretches out the both ends of tubular product bellmouth 11 and is used for being connected with electric fusion welding machine 4 electricity. The outer peripheral surface of the pipe socket 11 is provided with an annular limiting groove 113 for embedding the steel belt 14, so that the steel belt 14 can be limited when being tightened, the displacement of the steel belt can be reduced, and the pipe socket 11 can be tightened uniformly.

When 4 circular telegrams of electric fusion welding machine work, electric fuse 13 generates heat, melts the contact surface of the tubular product bellmouth 11 and the tubular product socket 12 that will bear each other and insert together, and under the effect of steel band 14, reduces heating position and receives thermal expansion, has kept better laminating nature for difficult emergence after the interconnect leaks, has better leakproofness.

The construction method of the carat pipe 1 socket joint electric melting connection structure in the embodiment of the application comprises the following steps: the method comprises the following steps:

the method comprises the following steps: excavating a pipe groove of the clamping and pulling pipe;

step two: hoisting the pipe material of the Krah pipe 1 with the embedded electric fuse 13 into the ditch;

step three: cleaning dirt on the pipe socket 11 and the pipe socket 12;

step four: the pipe body displacement mechanism comprises two Krah pipes 1, wherein the two Krah pipes 1 are connected, a quick installation mechanism 2 is installed between the two adjacent Krah pipes 1, a tightening mechanism 21 of the quick installation mechanism 2 is placed above a pipe socket 11, and a first traction mechanism and a second traction mechanism of the displacement mechanism are respectively installed and clamped with pipe bodies of the two Krah pipes 1;

step four: after the displacement mechanism pulls the two groups of the Krah pipes 1 to approach each other until the pipe bell 11 and the pipe spigot 12 are mutually inserted, the tightening mechanism 21 hoops the steel belt 14 on the pipe bell 11, and simultaneously the electric fuse 13 is electrically connected with the electric fuse welding machine 4;

step five: after the pipe socket 11 and the pipe socket 12 are welded with each other, cutting off the electric connection between the electric fuse 13 and the electric fusion welding machine 4, and naturally cooling to normal temperature;

step six: backfilling the pipeline trench;

step seven: krah tube 1 water shut-off experiment.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (9)

1. The utility model provides a carat pipe socket joint electric smelting connection structure, includes tubular product bellmouth (11) and tubular product socket (12) of mutual socket joint, the inner peripheral surface of tubular product bellmouth (11) is pre-buried to have electric fuse (13), characterized by: the electric fuse welding device is characterized in that a circular steel belt (14) is sleeved outside the pipe bell (11), a quick mounting mechanism (2) is arranged outside the pipe bell (11), and the quick connecting mechanism comprises a tightening mechanism (21) for tightening the steel belt (14), a displacement mechanism for enabling the pipe bell (11) and the pipe socket (12) to be close to each other and an electric fuse welding machine (4) electrically connected with an electric fuse (13); the tightening mechanism (21) comprises a positioning block (22) and a moving block (23) which is connected with the positioning block (22) in a sliding mode, one end of the steel belt (14) is fixedly connected with the positioning block (22), the other end of the steel belt is detachably connected with the moving block (23), and the radius of a circular ring enclosed by the steel belt (14) is reduced when the moving block (23) moves towards the direction far away from the positioning block (22); the displacement mechanism comprises a first pulling assembly (31) and a second pulling assembly (32), wherein the first pulling assembly (31) is connected to the carat pipe (1) where the pipe socket (11) is located, and the second pulling assembly (32) is connected to the carat pipe (1) where the pipe socket (12) is located.

2. The carat pipe spigot-and-socket electrofusion connection structure of claim 1, wherein: the electric fuse (13) is divided into two circles and is mutually connected in series and conducted, a stepped groove (111) is concavely arranged on the inner circumferential surface of the pipe socket (11) close to the opening, a clamping strip (112) with an annular device is further protruded on the inner circumferential surface of the pipe socket (11), a clamping groove (121) used for being clamped with the clamping strip (112) is concavely arranged on the outer circumferential surface of the pipe socket (12), and the inner circumferential surface of the pipe socket (11) is attached to the outer circumferential surface of the pipe socket (12) when the clamping strip (112) is clamped with the clamping groove (121); two parts of the electric fuse (13) are respectively embedded in the stepped groove (111) and the surface of the clamping strip (112).

3. The carat pipe spigot-and-socket electrofusion connection structure of claim 1, wherein: the positioning block (22) is in threaded connection with two groups of adjusting screws (24) which are parallel to each other, and the adjusting screws (24) penetrate through the moving block (23) and are rotationally connected with the moving block (23); the steel belt (14) penetrates through the moving block (23), and a jackscrew (25) with an end part tightly abutted to the steel belt (14) is connected to the moving block (23) in a threaded mode.

4. The carat pipe spigot-and-socket electrofusion connection structure of claim 1, wherein: the locating piece (22) both sides are stretched out and are had bracing piece (26) parallel with carat pipe (1) axis, first tractive subassembly (31) and second tractive subassembly (32) include two sets of arc poles (33) respectively, arc pole (33) one end is articulated with bracing piece (26), and the nock of adjacent arc pole (33) sets up in opposite directions, and adjacent two sets of arc poles (33) are used for the outer peripheral face of centre gripping carat pipe (1).

5. The carat pipe spigot-and-socket electrofusion connection structure of claim 4, wherein: the arc-shaped rods (33) and the supporting rod (26) are hinged, one end of the supporting rod extends out of the control portion (34) in the direction away from the arc opening, when the control portions (34) of two adjacent arc-shaped rods (33) are close to each other, the arc openings of the two adjacent arc-shaped rods (33) are also close to each other, and binding positioning ropes are used between the two adjacent control portions (34).

6. The carat pipe spigot-and-socket electrofusion connection structure of claim 4, wherein: the outer peripheral face of arc pole (33) all is fixed with stopper (35), all be provided with between arc pole (33) that lie in the same one side of carat pipe (1) of first tractive subassembly (31) and second tractive subassembly (32) and remove screw rod (36), remove screw rod (36) respectively with stopper (35) threaded connection and the spiral shell of two sets of just right arc poles (33) opposite, two sets of just right arc poles (33) are close to each other or keep away from when removing screw rod (36) and rotating.

7. The carat pipe spigot-and-socket electrofusion connection structure of claim 4, wherein: the shape of arc pole (33) is the heliciform the same with carat pipe (1) outer peripheral face ripple, when arc pole (33) centre gripping carat pipe (1) with carat pipe (1) outer peripheral face ripple laminating.

8. The carat pipe spigot-and-socket electrofusion connection structure of claim 1, wherein: the outer peripheral surface of the pipe socket (11) is provided with an annular limiting groove (113) for embedding the steel belt (14).

9. The construction method of the carat pipe spigot-and-socket electric melting connection structure according to any one of claims 1 to 8, characterized in that: the method comprises the following steps:

the method comprises the following steps: excavating a pipeline groove of the Kera pipe (1);

step two: hoisting the pipe material of the Krah pipe (1) embedded with the electric fuse (13) to be laid in the ditch;

step three: cleaning dirt on the pipe socket (11) and the pipe socket (12);

step four: the pipe body displacement mechanism is characterized in that the Krah pipes (1) are connected, a quick mounting mechanism (2) is mounted between two adjacent Krah pipes (1), a tightening mechanism (21) of the quick mounting mechanism (2) is placed above the pipe socket (11), and a first traction mechanism and a second traction mechanism of the displacement mechanism are connected with pipe bodies of the two Krah pipes (1) respectively;

step four: after the displacement mechanism pulls the two groups of Kela pipes (1) to approach each other until the pipe bell mouth (11) and the pipe spigot (12) are mutually inserted, the tightening mechanism (21) hoops the pipe bell mouth (11) by the steel belt (14), and simultaneously the electric fuse (13) is electrically connected with the electric fuse welding machine (4);

step five: after the pipe socket (11) and the pipe socket (12) are mutually welded, cutting off the electric connection between the electric fuse (13) and the electric fuse welder (4), and naturally cooling to normal temperature;

step six: backfilling the pipeline trench;

step seven: krah pipe (1) water shut-off experiment.

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