Auxiliary splicing device for municipal pipeline construction

Abstract

The present invention relates to the technical field of pipeline connection, and specifically to an auxiliary splicing device for municipal pipeline construction, including a heat shrinkable tape, a connecting piece and two splicing rings. The splicing rings are arranged in a one-to-one correspondence with the corrugated pipes, and the splicing rings are sleeved on the correspondingly arranged corrugated pipes. A plurality of support blocks are connected to the two splicing rings, the connecting piece is located between the two splicing rings, and a heat shrinkable piece is arranged on the inner circumferential wall surface of the connecting piece. An auxiliary splicing device for municipal pipeline construction of the present invention separates the heat shrinkable tape that has been heat shrunk by the heat shrink gun from the heat shrinkable tape that has not been heat shrunk by the heat shrink gun in the circumferential direction and axial direction of the heat shrinkable tape by arranging the connecting piece and the two splicing rings, and performs segmented heat shrinkage on the heat shrinkable tape from the middle to both ends, thereby improving the uniformity of heat shrinkage at each position on the heat shrinkable tape, and thereby improving the splicing quality after the heat shrinkable tape splices the two corrugated pipes.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline connection, and in particular to an auxiliary splicing device for municipal pipeline construction. Background Art

[0002] As a new type of pipe, steel-reinforced polyethylene corrugated pipe has been widely used in municipal and housing construction projects. Due to the particularity of its material, the gap between the pipe ends must be high during the splicing process. It is necessary to achieve a tight connection as much as possible to reduce the port gap.

[0003] In the prior art, two corrugated pipes are usually spliced ​​by connecting them with heat shrink tape. However, the heat shrink tape connection is usually done manually, which is inconvenient to operate and of low quality. In addition, the shrinkage degree of the heat shrink tape at each position is uneven, and the interface of the two corrugated pipes is prone to misalignment and deformation, causing the pipe to tear. This phenomenon not only delays the construction period, but also causes huge economic losses. Summary of the invention

[0004] The invention provides an auxiliary splicing device for municipal pipeline construction to solve the problem that when the existing heat shrinkable belt is used to connect two corrugated pipes by heating, the shrinkage degree of each position of the heat shrinkable belt is uneven, resulting in poor connection effect at the interface of the two corrugated pipes.

[0005] An auxiliary splicing device for municipal pipeline construction of the present invention adopts the following technical scheme: an auxiliary splicing device for municipal pipeline construction, used for splicing two corrugated pipes with threaded grooves, including a heat shrinkable tape, a connecting piece and two splicing rings; the two corrugated pipes are arranged along a first direction, the first direction is a horizontal direction, the ends of the two corrugated pipes close to each other along the first direction can be spliced ​​to each other, and the heat shrinkable tape is sleeved on the splicing of the two splicing rings; the splicing rings are arranged one-to-one with the corrugated pipes, and the splicing rings are sleeved on the correspondingly arranged corrugated pipes; the two splicing rings are connected to a plurality of support blocks, and the plurality of support blocks are evenly distributed around the circumferential direction of the corrugated pipes, and the support blocks on the two splicing rings are close to each other in the first direction and can be spliced ​​along the first direction. The support block is located on the inner side of the heat shrinkable tape and is always in contact with the heat shrinkable tape; the side close to the central axis of the corrugated tube along the second direction is called the inner side, and the side away from the central axis of the corrugated tube along the second direction is called the outer side. The second direction is perpendicular to the first direction, and the second direction is the radial direction of the corrugated tube. The connecting piece is located between the two splicing rings, and a heat shrinkable piece is arranged on the inner circumferential wall surface of the connecting piece. The heat shrinkable piece can rotate on the connecting piece around the first direction. The heat shrinkable piece includes two heat shrinkable guns, which are arranged in parallel along the first direction and are located on the outer side of the heat shrinkable tape. During heat shrinkage, the two heat shrinkable guns can always be located between the support blocks on the two splicing rings, and the heat shrinkable guns can contact the support blocks adjacent to them in the first direction and move synchronously along the first direction.

[0006] Furthermore, the ends of the support blocks on the two splicing rings that are close to each other in the first direction are both provided with first magnets, and the two heat shrinkable parts are both provided with second magnets, and the first magnets can be attracted to the second magnets.

[0007] Furthermore, a plurality of limit rods are evenly distributed around the first direction on the inner circumferential wall surface of each splicing ring, and the limit rods are arranged along the first direction. The plurality of limit rods are arranged one by one corresponding to the plurality of support blocks, and each support block is fixedly mounted on the corresponding limit rod, and the limit rod is a telescopic rod, so that the support block can move along the first direction.

[0008] Furthermore, the support block is installed on the corresponding limit rod through the first elastic member, and the first elastic member is arranged along the second direction. The first elastic member always has the tendency to urge the support block to move along the second direction toward the side close to the heat shrinkable band, so that the support block is always in contact with the heat shrinkable band.

[0009] Furthermore, the limiting rod is installed on the corresponding splicing ring through a second elastic member, and the second elastic member is arranged along the second direction. The second elastic member always has a tendency to urge the limiting rod to move along the second direction toward the side close to the bellows.

[0010] Furthermore, the connecting piece includes a connecting ring and a plurality of connecting rods, the connecting ring is coaxially arranged with the splicing ring and is located between the two splicing rings; the plurality of connecting rods are evenly distributed on the connecting ring around a first direction, and the connecting rods penetrate the connecting ring along the first direction and are fixedly connected to the connecting ring, a plurality of plug-in blocks are evenly distributed on the outer peripheral wall surface of each splicing ring around the first direction, each plug-in block is provided with a slot, the slot is arranged along the first direction, and the plurality of connecting rods are arranged one-to-one correspondingly to the plurality of slots, the two ends of the connecting rod respectively pass through the corresponding slots along the first direction, and the connecting rod and the plug-in block are locked by a locking nut.

[0011] Furthermore, a limiting block is arranged on the inner side of each limiting rod, and the limiting block can be plugged into the thread groove on the corrugated pipe.

[0012] Furthermore, the heat shrink part also includes a sliding block, which is installed on the connecting ring. The sliding block is an arc-shaped block and can rotate on the connecting ring around a first direction. A moving block is fixed to the sliding block. The moving block is located on the side of the sliding block close to the heat shrink tape in the second direction. A moving groove is opened on the moving block, and the moving groove is arranged along the first direction. Both heat shrink guns are installed in the moving groove.

[0013] Furthermore, the heat shrinkable part also includes two crimping blocks, and two matching blocks are slidably installed in the movable groove. The matching blocks and the crimping blocks are arranged in a one-to-one correspondence. The crimping blocks are installed on the corresponding matching blocks through the third elastic member. The third elastic member is arranged along the second direction. The third elastic member always has the tendency to urge the corresponding crimping blocks to move along the second direction toward the side close to the heat shrinkable band, so that the crimping blocks can always abut against the heat shrinkable band, and the heat shrink gun is installed on the crimping blocks.

[0014] Furthermore, the splicing ring includes a first ring body and a second ring body, both of which are semi-annular structures, and the first ring body and the second ring body are detachably connected.

[0015] The beneficial effects of the present invention are as follows: an auxiliary splicing device for municipal pipeline construction of the present invention cooperates by setting a connecting piece and two splicing rings. During the heat shrinking process, a plurality of support blocks evenly distributed in the circumferential direction of the corrugated pipe will support the heat shrinkable tape, and in the circumferential direction and axial direction of the heat shrinkable tape, the heat shrinkable tape that has been heat shrunk by the heat shrink gun is separated from the heat shrinkable tape that has not been heat shrunk by the heat shrink gun, so that the heat shrinkable tape that has not been heat shrunk by the heat shrink gun can be kept coaxial with the corrugated pipe as much as possible, and the heat shrinkable tape that has not been heat shrunk by the heat shrink gun is prevented from approaching the heat shrinkable tape that has been heat shrunk by the heat shrink gun, resulting in excessive deformation and uneven heat shrinkage. As the support blocks on the two splicing rings continue to move away from each other, the heat shrinkage of the entire heat shrinkable tape is gradually completed, and the heat shrinkable tape is heat shrunk in sections from the middle to the two ends, which improves the uniformity of heat shrinkage at each position on the heat shrinkable tape, thereby improving the splicing quality of the heat shrinkable tape after splicing the two corrugated pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of an embodiment of an auxiliary splicing device for municipal pipeline construction of the present invention and two corrugated pipes after installation;

[0018] Figure 2 It is a schematic structural diagram of two corrugated pipes of an embodiment of an auxiliary splicing device for municipal pipeline construction of the present invention;

[0019] Figure 3 It is a schematic diagram of the overall structure of an embodiment of an auxiliary splicing device for municipal pipeline construction of the present invention;

[0020] Figure 4It is a cross-sectional view of an embodiment of an auxiliary splicing device for municipal pipeline construction of the present invention and two corrugated pipes after installation;

[0021] Figure 5 It is a structural schematic diagram of a first ring body of an embodiment of an auxiliary splicing device for municipal pipeline construction of the present invention;

[0022] Figure 6 A cross-sectional view of a first ring body of an embodiment of an auxiliary splicing device for municipal pipeline construction of the present invention;

[0023] Figure 7 It is a schematic diagram of the structure of the connecting piece part of an embodiment of an auxiliary splicing device for municipal pipeline construction of the present invention;

[0024] Figure 8 It is a structural schematic diagram of a heat shrinkable component of an embodiment of an auxiliary splicing device for municipal pipeline construction of the present invention;

[0025] Fig. 9 It is a schematic diagram of the structure of the heat shrinkable part of an embodiment of an auxiliary splicing device for municipal pipeline construction of the present invention;

[0026] Fig.10 The present invention is a cross-sectional view of the structure of a heat shrinkable component portion of an embodiment of an auxiliary splicing device for municipal pipeline construction according to the present invention.

[0027] In the figure: 100, bellows; 101, notch; 200, heat shrink tape; 300, connector; 310, connecting ring; 320, connecting rod; 330, locking nut; 400, splicing ring; 401, first ring body; 402, second ring body; 410, supporting block; 411, first elastic member; 420, limiting rod; 421, second elastic member; 422, limiting block; 430, plug-in block; 500, heat shrink member; 510, heat shrink gun; 520, sliding block; 530, moving block; 540, crimping block; 550, fitting block; 560, third elastic member. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] An embodiment of an auxiliary splicing device for municipal pipeline construction of the present invention is as follows Figures 1 to 10 shown.

[0030] An auxiliary splicing device for municipal pipeline construction is used to splice two corrugated pipes 100 with thread grooves, including a heat shrinkable tape 200, a connector 300 and two splicing rings 400. The two corrugated pipes 100 are arranged along a first direction, which is a horizontal direction. The ends of the two corrugated pipes 100 that are close to each other along the first direction can be spliced ​​together, and the heat shrinkable tape 200 is sleeved on the splicing of the two splicing rings 400.

[0031] The splicing ring 400 is arranged in one-to-one correspondence with the bellows 100, and the splicing ring 400 is sleeved on the corresponding bellows 100. Multiple support blocks 410 are connected to both splicing rings 400, and the multiple support blocks 410 are evenly distributed around the circumferential direction of the bellows 100. The support blocks 410 on the two splicing rings 400 are close to each other in the first direction and can move along the first direction. The support blocks 410 are located on the inner side of the heat shrinkable tape 200 and always abut against the heat shrinkable tape 200. The side close to the central axis of the bellows 100 along the second direction is called the inner side, and the side away from the central axis of the bellows 100 is called the outer side. The second direction is perpendicular to the first direction and is the radial direction of the bellows 100.

[0032] The connecting piece 300 is located between the two splicing rings 400. A heat shrink piece 500 is arranged on the inner wall surface of the connecting piece 300. The heat shrink piece 500 can rotate around the first direction on the connecting piece 300. The heat shrink piece 500 includes two heat shrink guns 510. The two heat shrink guns 510 are arranged in parallel along the first direction and are located on the outside of the heat shrink belt 200. During heat shrinkage, the two heat shrink guns 510 can always be located between the support blocks 410 on the two splicing rings 400, and the heat shrink guns 510 can contact the support blocks 410 arranged adjacent to them in the first direction and move synchronously along the first direction.

[0033] Specifically, the ends of the two corrugated tubes 100 that are close to each other along the first direction are both provided with a notch 101 , and the two notches 101 can be spliced ​​with each other.

[0034] In this embodiment, the connector 300 and two splicing rings 400 are provided to cooperate. After the two bellows 100 are spliced, the heat shrinkable tape 200 is sleeved on the interface of the two bellows 100, and then the splicing ring 400 is installed on the corresponding bellows 100. At this time, the support block 410 is located on the inner side of the heat shrinkable tape 200, and the two heat shrink guns 510 are located on the outer side of the heat shrinkable tape 200. In the first direction, the two heat shrink guns 510 are located between the two support blocks 410.

[0035] Then, the two heat shrink guns 510 are started to shrink the heat shrinkable tape 200 they are aligned with. During shrinkage, the heat shrinkable tape 200 will shrink and deform along the second direction toward the side close to the corrugated tube 100. The support blocks 410 on the two splicing rings 400 will move along the first direction and move away from each other on the inner side of the heat shrinkable tape 200 under the impetus of the deformed heat shrinkable tape 200. When the two support blocks 410 move, they can drive the heat shrinkable guns 510 adjacent to them in the first direction to move synchronously, that is, the two heat shrinkable guns 510 move away from each other along the first direction on the connecting member 300 and leave the heat shrinkable tape 200 that has been shrunk. Stop shrinkage and rotate the heat shrinkable member 500, so that the two heat shrinkable guns 510 rotate around the first direction on the connecting member 300 to the next support block 410. The two heat shrinkable guns 510 will come between the support blocks 410 on the two splicing rings 400 at that location and shrink the heat shrinkable tape 200 at that location. And so on, until the heat shrinkage of the heat shrinkable tape 200 in the circumferential direction is completed, that is, one circle of heat shrinkage is completed.

[0036] After the heat shrinking of the heat shrinkable tape 200 is completed in the circumferential direction, the support blocks 410 on the two splicing rings 400 move away from each other in the first direction, leaving the heat shrinkable tape 200 that has been heat shrunk, and the two heat shrink guns 510 will return to the initial position again, and approach the support blocks 410 adjacent to them in the first direction and abut against the support blocks 410, and then start the two heat shrink guns 510 to shrink the heat shrinkable tape 200 (not yet heat shrunk) they are aligned with. Similarly, the support blocks 410 on the two splicing rings 400 will move along the first direction and move away from each other on the inner side of the heat shrinkable tape 200 under the impetus of the heat shrinkable tape 200, and the two heat shrink guns 510 move away from each other in the first direction on the connecting member 300, leaving the heat shrinkable tape 200 that has been heat shrunk. The heat shrinkable member 500 is rotated again according to the above process until the heat shrinking of the circle of heat shrinkable tape 200 is completed, and the above operation is repeated until the heat shrinking of the heat shrinkable tape 200 is completed.

[0037] In the heat shrinking process of this embodiment, a plurality of support blocks 410 evenly distributed in the circumferential direction of the corrugated tube 100 will support the heat shrinkable tape 200, and in the circumferential direction and axial direction of the heat shrinkable tape 200, the heat shrinkable tape 200 that has been heat shrunk by the heat shrink gun 510 will be separated from the heat shrinkable tape 200 that has not been heat shrunk by the heat shrink gun 510, so that the heat shrinkable tape 200 that has not been heat shrunk by the heat shrink gun 510 can be kept coaxial with the corrugated tube 100 as much as possible, and the heat shrinkable tape 200 that has not been heat shrunk by the heat shrink gun 510 is prevented from moving closer to the heat shrinkable tape 200 that has been heat shrunk by the heat shrink gun 510, causing excessive deformation and uneven heat shrinkage. As the support blocks 410 on the two splicing rings 400 continue to move away from each other, the heat shrinkage of the entire heat shrinkable tape 200 is gradually completed, and the heat shrinkable tape 200 is heat shrunk in sections from the middle to both ends, thereby improving the uniformity of heat shrinkage at various positions on the heat shrinkable tape 200, thereby improving the splicing quality of the heat shrinkable tape 200 after splicing the two corrugated tubes 100.

[0038] In this embodiment, the support blocks 410 on the two splicing rings 400 are both provided with first magnets at their ends close to each other in the first direction, and the two heat shrinkable parts 500 are both provided with second magnets, and the first magnets can be attracted to the second magnets.

[0039] When in use, the second magnet on the heat shrinkable part 500 will be attracted by the first magnet on the support block 410 adjacent to it in the first direction, and since the first magnet is located at one end of the support blocks 410 on the two splicing rings 400 that are close to each other in the first direction, the first magnet will attract the second magnet adjacent to it in the first direction, and make the second magnet located on the side of the heat shrinkable tape 200 that has been heat shrunk by the heat shrink gun 510 in the first direction close to the first magnet corresponding to it, that is, the two heat shrink guns 510 can always be located between the support blocks 410 on the two splicing rings 400 that are on the same axis in the first direction, and be attracted to the support blocks 410 adjacent to them in the first direction.

[0040] In this embodiment, a plurality of limit rods 420 are evenly distributed around the first direction on the inner wall surface of each splicing ring 400, and the limit rods 420 are arranged along the first direction. The plurality of limit rods 420 are arranged one-to-one with the plurality of support blocks 410, and each support block 410 is fixedly mounted on the corresponding limit rod 420, and the limit rod 420 is a telescopic rod, so that the support block 410 can move along the first direction.

[0041] Specifically, the support block 410 is installed on the corresponding limiting rod 420 through the first elastic member 411. The first elastic member 411 is arranged along the second direction. The first elastic member 411 always has the tendency to urge the support block 410 to move along the second direction toward the side close to the heat shrinkable band 200, so that the support block 410 is always in contact with the heat shrinkable band 200. The first elastic member 411 is a spring.

[0042] The limiting rod 420 is installed on the corresponding splicing ring 400 through the second elastic member 421. The second elastic member 421 is arranged along the second direction. The second elastic member 421 always has the tendency to urge the limiting rod 420 to move along the second direction toward the side close to the corrugated tube 100. The second elastic member 421 is a spring.

[0043] In this embodiment, by setting a limiting rod 420, during heat shrinkage, the heat shrinkable belt 200 will shrink and deform along the second direction toward the side close to the corrugated tube 100, and the support blocks 410 on the two splicing rings 400 will move along the first direction and away from each other on the inner side of the heat shrinkable belt 200 under the impetus of the deformed heat shrinkable belt 200, and the movement of the support block 410 will retract the corresponding limiting rod 420. A first elastic member 411 is set between the support block 410 and the limiting rod 420 to ensure that the support block 410 is always in contact with the heat shrinkable belt 200, and a second elastic member 421 is set between the limiting rod 420 and the splicing ring 400, so that the limiting rod 420 can adapt to the corrugated tubes 100 of different diameters, thereby expanding the use range of the splicing ring 400.

[0044] In this embodiment, the connector 300 includes a connecting ring 310 and a plurality of connecting rods 320, and the connecting ring 310 is coaxially arranged with the splicing ring 400 and is located between the two splicing rings 400. The plurality of connecting rods 320 are evenly distributed on the connecting ring 310 around the first direction, and the connecting rods 320 penetrate the connecting ring 310 along the first direction and are fixedly connected to the connecting ring 310, and the outer peripheral wall surface of each splicing ring 400 is evenly distributed around the first direction with a plurality of plug-in blocks 430, and each plug-in block 430 is provided with a slot, and the slot is arranged along the first direction, and the plurality of connecting rods 320 are arranged one by one corresponding to the plurality of slots, and the two ends of the connecting rod 320 respectively pass through the corresponding slots along the first direction, and the connecting rod 320 and the plug-in block 430 are locked by a locking nut 330.

[0045] Furthermore, a limiting block 422 is disposed on the inner side of each limiting rod 420 , and the limiting block 422 can be plugged into the thread groove on the corrugated tube 100 .

[0046] In this embodiment, a connecting ring 310 and a plurality of connecting rods 320 are provided. When in use, the connecting ring 310 is first sleeved on the outside of the heat shrinkable tape 200 so that the two heat shrink guns 510 on the connecting ring 310 are symmetrical about the central axis of the heat shrinkable tape 200 along the first direction. Then, the two splicing rings 400 are sleeved on the correspondingly provided bellows 100, and the limiting blocks 422 are engaged with the threaded grooves on the bellows 100. Then, the connecting rods 320 are plugged into the correspondingly provided slots so that the support blocks 410 on the two splicing rings 400 are close to each other in the first direction until the heat shrink guns 510 adjacent to the heat shrink guns 510 in the first direction are attracted. In this process, the limiting rods 420 can be adaptively extended and retracted. Then, the connecting rod 320 and the plug-in block 430 are locked by the locking nut 330, and the distance between the two splicing rings 400 in the first direction is limited, and then the initial position of the support block 410 on the splicing ring 400 is limited, so that the support block 410 can only move under the influence of the deformed heat shrinkable tape 200. And by setting the limit block 422 and plugging the limit block 422 with the thread groove on the corrugated pipe 100, after the positions of the two splicing rings 400 in the first direction are limited, the positions of the two corrugated pipes 100 in the first direction will also be limited, and the two corrugated pipes 100 are auxiliaryly docked, thereby improving the tightness of the interface of the two corrugated pipes 100.

[0047] In this embodiment, the heat shrinkable component 500 further includes a sliding block 520, which is mounted on the connecting ring 310. The sliding block 520 is an arc-shaped block and can rotate around the first direction on the connecting ring 310. Specifically, the sliding block 520 can be driven by a motor or manually. A moving block 530 is fixedly connected to the sliding block 520 so that the moving block 530 can rotate with the sliding block 520. The moving block 530 is arranged along the first direction. The moving block 530 is located on the side of the sliding block 520 close to the heat shrinkable tape 200 in the second direction. A moving groove is provided on the moving block 530. The moving groove is arranged along the first direction. Both heat shrink guns 510 are installed in the moving groove.

[0048] Furthermore, the heat shrinkable part 500 also includes two crimping blocks 540, two matching blocks 550 are slidably installed in the movable groove, and the matching blocks 550 can only move in the movable groove along the first direction, the matching blocks 550 and the crimping blocks 540 are arranged one by one, and the crimping blocks 540 are installed on the corresponding matching blocks 550 through the third elastic member 560, and the third elastic member 560 is arranged along the second direction. The third elastic member 560 always has a tendency to urge the corresponding crimping block 540 to move along the second direction toward the side close to the heat shrinkable belt 200, so that the crimping block 540 can always abut against the heat shrinkable belt 200, and the third elastic member 560 is a spring. The heat shrink gun 510 is installed on the crimping block 540.

[0049] Furthermore, a plurality of heat shrinkable components 500 are provided, and the plurality of heat shrinkable components 500 are evenly distributed on the connecting ring 310 around the first direction.

[0050] By providing the crimping block 540 and connecting the crimping block 540 and the matching block 550 through the third elastic member 560, the crimping block 540 can always be in contact with the heat shrinkable tape 200, and the distance between the heat shrink gun 510 and the heat shrinkable tape 200 in the second direction is basically kept constant, further improving the uniformity of heat shrinkage at various positions on the heat shrinkable tape 200. In addition, providing multiple heat shrinkable parts 500 can improve the heat shrinkage efficiency while ensuring the uniformity of heat shrinkage at various positions on the heat shrinkable tape 200.

[0051] In this embodiment, the splicing ring 400 includes a first ring body 401 and a second ring body 402. The first ring body 401 and the second ring body 402 are both semi-annular structures, and the first ring body 401 and the second ring body 402 are detachably connected.

[0052] Specifically, the first ring body 401 and the second ring body 402 are rotatably connected at one end approaching each other in the first direction, and the other end approaching each other in the first direction is locked by bolts and nuts, so that the first ring body 401 and the second ring body 402 are detachably connected.

[0053] By configuring the splicing ring 400 to include the first ring body 401 and the second ring body 402 , it is convenient to sleeve the splicing ring 400 onto the correspondingly configured bellows 100 .

[0054] In combination with the above embodiments, the specific working process is as follows:

[0055] When in use, after splicing the two bellows 100, the heat shrink tape 200 is sleeved on the interface of the two bellows 100, and then the connecting ring 310 is sleeved on the outside of the heat shrink tape 200, and the two heat shrink guns 510 are symmetrical about the central axis of the heat shrink tape 200 along the first direction, and then the two splicing rings 400 are sleeved on the corresponding bellows 100, and the limit block 422 is clamped with the threaded groove on the bellows 100, and then the connecting rod 320 is plugged into the corresponding slot, so that the support blocks 410 on the two splicing rings 400 are close to each other in the first direction until the heat shrink gun 510 corresponding to the two splicing rings 400 is sucked. Then the connecting rod 320 is locked with the plug-in block 430 using the locking nut 330, and the first ring body 401 and the second ring body 402 are locked using the bolt and nut, and the two bellows 100 are auxiliary docked to improve the tightness of the interface of the two bellows 100.

[0056] At this time, the support block 410 is located inside the heat shrinkable tape 200 and abuts against the heat shrinkable tape 200, and the two heat shrink guns 510 are located outside the heat shrinkable tape 200 and the crimping block 540 abuts against the heat shrinkable tape 200. In the first direction, the two heat shrink guns 510 are located between the two support blocks 410.

[0057] Then, the two heat shrink guns 510 are started to shrink the heat shrinkable tape 200 they are aligned with. During shrinkage, the heat shrinkable tape 200 will shrink and deform along the second direction toward the side close to the corrugated tube 100. The support blocks 410 on the two splicing rings 400 will move along the first direction and move away from each other on the inner side of the heat shrinkable tape 200 under the impetus of the deformed heat shrinkable tape 200. When the two support blocks 410 move, they can drive the heat shrinkable guns 510 adjacent to them in the first direction to move synchronously, that is, the two heat shrinkable guns 510 move away from each other along the first direction on the connecting member 300 and leave the heat shrinkable tape 200 that has been shrunk. Stop shrinkage and rotate the heat shrinkable member 500, so that the two heat shrinkable guns 510 rotate around the first direction on the connecting member 300 to the next support block 410. The two heat shrinkable guns 510 will come between the support blocks 410 on the two splicing rings 400 at that location and shrink the heat shrinkable tape 200 at that location. And so on, until the heat shrinkage of the heat shrinkable tape 200 in the circumferential direction is completed, that is, one circle of heat shrinkage is completed.

[0058] After the heat shrinking of the heat shrinkable tape 200 is completed in the circumferential direction, the support blocks 410 on the two splicing rings 400 move away from each other in the first direction, leaving the heat shrinkable tape 200 that has been heat shrunk, and the two heat shrink guns 510 will return to the initial position again, and approach the support blocks 410 adjacent to them in the first direction and abut against the support blocks 410, and then start the two heat shrink guns 510 to shrink the heat shrinkable tape 200 (not yet heat shrunk) they are aligned with. Similarly, the support blocks 410 on the two splicing rings 400 will move along the first direction and move away from each other on the inner side of the heat shrinkable tape 200 under the impetus of the heat shrinkable tape 200, and the two heat shrink guns 510 move away from each other in the first direction on the connecting member 300, leaving the heat shrinkable tape 200 that has been heat shrunk. The heat shrinkable member 500 is rotated again according to the above process until the heat shrinking of the circle of heat shrinkable tape 200 is completed, and the above operation is repeated until the heat shrinking of the heat shrinkable tape 200 is completed.

[0059] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An auxiliary splicing device for municipal pipeline construction, used for splicing two corrugated pipes with thread grooves, characterized in that: It includes a heat shrinkable tape, a connecting piece and two splicing rings; the two bellows are arranged along a first direction, the first direction is a horizontal direction, the ends of the two bellows close to each other along the first direction can be spliced ​​together, and the heat shrinkable tape is sleeved on the splicing of the two splicing rings; the splicing rings and the bellows are arranged one by one, and the splicing rings are sleeved on the correspondingly arranged bellows; the two splicing rings are connected to a plurality of support blocks, and the plurality of support blocks are evenly distributed around the circumferential direction of the bellows, the support blocks on the two splicing rings are close to each other in the first direction and can move along the first direction, the support blocks are located on the inner side of the heat shrinkable tape and are always in contact with the heat shrinkable tape; the side close to the central axis of the bellows along the second direction is called the inner side, the side away from the central axis of the bellows is called the outer side, and the second direction is called the inner side. The second direction is perpendicular to the first direction, and the second direction is the radial direction of the corrugated tube; the connecting piece is located between the two splicing rings, and a heat shrinkable piece is arranged on the inner circumferential wall surface of the connecting piece, and the heat shrinkable piece can rotate around the first direction on the connecting piece, and the heat shrinkable piece includes two heat shrinkable guns, and the two heat shrinkable guns are arranged side by side along the first direction and are located on the outside of the heat shrinkable belt. During heat shrinkage, the two heat shrinkable guns can always be located between the support blocks on the two splicing rings, and the heat shrinkable guns can contact the support blocks adjacent to them in the first direction and move synchronously along the first direction; a plurality of limit rods are evenly distributed on the inner circumferential wall surface of each splicing ring around the first direction, and the limit rods are arranged along the first direction, and the plurality of limit rods are arranged one-to-one with the plurality of support blocks, and each support block is fixedly installed It is installed on the corresponding limit rod, and the limit rod is a telescopic rod, so that the support block can move in the first direction; the support block is installed on the corresponding limit rod through the first elastic member, the first elastic member is arranged along the second direction, and the first elastic member always has the tendency to urge the support block to move along the second direction toward the side close to the heat shrinkable band, so that the support block is always in contact with the heat shrinkable band, and the ends of the support blocks on the two splicing rings that are close to each other in the first direction are each provided with a first magnet, and the two heat shrinkable members are each provided with a second magnet, and the first magnet can be attracted to the second magnet, and the limit rod is installed on the corresponding splicing ring through the second elastic member, the second elastic member is arranged along the second direction, and the second elastic member always has the tendency to urge the limit rod to move along the second direction The connecting piece has a tendency to move toward one side of the bellows, and includes a connecting ring and a plurality of connecting rods, the connecting ring and the splicing ring are coaxially arranged and located between the two splicing rings; the plurality of connecting rods are evenly distributed on the connecting ring around a first direction, and the connecting rods penetrate the connecting ring along the first direction and are fixedly connected to the connecting ring, a plurality of plug-in blocks are evenly distributed on the outer peripheral wall surface of each splicing ring around the first direction, each plug-in block is provided with a slot, the slot is arranged along the first direction, and the plurality of connecting rods are arranged one by one corresponding to the plurality of slots, the two ends of the connecting rod respectively pass through the corresponding slots along the first direction, and the connecting rod and the plug-in block are locked by a locking nut, and a limit block is arranged on the inner side of each limit rod, and the limit block can be plugged into the threaded groove on the bellows.

2. The auxiliary splicing device for municipal pipeline construction according to claim 1 is characterized in that: The heat shrinkable part also includes a sliding block, which is installed on the connecting ring. The sliding block is an arc-shaped block and can rotate on the connecting ring around a first direction. A moving block is fixed to the sliding block. The moving block is located on the side of the sliding block close to the heat shrinkable tape in the second direction. A moving groove is opened on the moving block, and the moving groove is arranged along the first direction. Both heat shrink guns are installed in the moving groove.

3. The auxiliary splicing device for municipal pipeline construction according to claim 2 is characterized in that: The heat shrinkable part also includes two crimping blocks, two matching blocks are slidably installed in the movable groove, the matching blocks and the crimping blocks are arranged in a one-to-one correspondence, and the crimping blocks are installed on the corresponding matching blocks through the third elastic member, and the third elastic member is arranged along the second direction. The third elastic member always has the tendency to urge the corresponding crimping block to move along the second direction toward the side close to the heat shrinkable tape, so that the crimping block can always abut against the heat shrinkable tape, and the heat shrink gun is installed on the crimping block.

4. The auxiliary splicing device for municipal pipeline construction according to claim 1 is characterized in that: The splicing ring comprises a first ring body and a second ring body, both of which are semi-annular structures, and the first ring body and the second ring body are detachably connected.

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