Large-diameter PE pipeline sweat soldering device

Abstract

The utility model relates to the technical field of sweat soldering, in particular to a large-diameter PE pipeline sweat soldering device which comprises a butt joint pipeline. Comprising two supporting frames, a mounting rod is mounted between the two supporting frames, a supporting semicircular plate is fixedly mounted at one end of the mounting rod, a fixing block is fixedly mounted at the other end of the mounting rod, a sliding block is slidably mounted in the middle of the mounting rod, and pipeline fixing assemblies are fixedly mounted at the top end of the fixing block and the top end of the sliding block; a pipeline butt joint assembly is installed at the bottom end of the sliding block, and a hot melting welding assembly is installed between the two pipeline fixing assemblies. According to the device, the pipeline butt joint assembly is used for moving the butt joint pipeline, meanwhile, after hot melting butt joint, continuous and constant pressure is applied to the butt joint pipeline, and the butt joint quality is guaranteed; the hot melting welding assembly is used for conducting heating treatment on the butt joint ends of the two butt joint pipelines, in-place and pulling-away actions of a hot melting welding plate are controlled by a mechanical structure, the accuracy and the safety degree are higher, potential safety hazards are reduced, and meanwhile hot melting errors are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline connection, in particular to a large-diameter PE pipeline hot-melt welding device. Background Art

[0002] Water conservancy projects are engineering construction projects carried out for water conservancy facilities such as farmland irrigation, drainage and flood control. They mainly include excavating water diversion channels, building water pipelines, laying water pipelines according to project design requirements, and connecting and fixing them, installing sprinkler equipment, and carrying out debugging and maintenance work.

[0003] In the existing water conservancy project construction process, from the perspective of project volume, construction progress and construction difficulty, the PE pipe hot-melt welding process accounts for 60% of the construction period, and the on-site construction conditions are limited. For large-diameter water supply PE pipes, manual operation is usually used for PE pipe hot-melt welding. The construction process requires at least three operators to cooperate and the operation time is long. The quality of PE pipe docking is uneven, the docking qualification rate is low, and there is a phenomenon of rework. The longer the docking time, the greater the risk of burns.

[0004] Therefore be necessary to invent a kind of large diameter PE pipe hot melt welding device to solve the above problems. Utility Model Content

[0005] The utility model provides a large diameter PE pipe hot melt welding device to solve the problems of long working period, poor docking quality and potential safety hazards in the existing manual hot melt welding method for PE pipes.

[0006] The utility model is realized by adopting the following technical solutions:

[0007] A large-diameter PE pipe hot-melt welding device includes butted pipes; it includes two groups of support frames, a mounting rod is installed between the two groups of support frames, one end of the mounting rod is fixedly installed with a supporting semicircular plate, the other end of the mounting rod is fixedly installed with a fixing block, the middle part of the mounting rod is slidably installed with a sliding block, the top of the fixing block and the top of the sliding block are both fixedly installed with pipe fixing components, the bottom end of the sliding block is installed with a pipe butt connection component, and a hot-melt welding component is installed between the two groups of pipe fixing components.

[0008] Furthermore, the pipe fixing assembly includes a lower semicircular fixing block fixedly connected to the top of the fixing block and the top of the sliding block, the top of the lower semicircular fixing block is rotatably connected to the upper semicircular fixing block, the upper semicircular fixing block and the lower semicircular fixing block are combined to form a circular space that matches the docking pipe, and the center of the circular space on the fixed block and the center of the circular space on the sliding block are located on the same axis.

[0009] Furthermore, the two ends of the lower semicircular fixing block and the upper semicircular fixing block close to each other are integrally fixed with extension ear plates, and the middle part of the extension ear plate is provided with a mounting groove;

[0010] An adapter plate is installed in both mounting grooves at the left end. The upper portion of the adapter plate is rotatably connected to the extension ear plate on the upper semicircular fixed block via a pin shaft, and the lower portion of the adapter plate is rotatably connected to the extension ear plate on the lower semicircular fixed block via a pin shaft.

[0011] A locking rod is installed in the two mounting grooves at the right end. The lower end of the locking rod is welded to the extension ear plate on the lower semicircular fixed block through a pin shaft. The upper end of the locking rod extends out of the mounting slot on the upper semicircular fixed block, and the upper part of the locking rod is provided with an external thread. The upper part of the locking rod is screwed with a locking nut that is close to the top of the extension ear plate.

[0012] Furthermore, the pipe docking assembly includes a fixed rack having one end fixed to the side end of the fixed block, the other end of the fixed rack sequentially passing through the sliding block and the supporting semicircular plate and then fixed to the side end of the supporting frame, bearing seats are fixedly installed on both sides of the bottom end of the sliding block, a rotating shaft is commonly installed on the two bearing seats, a driving gear is fixedly assembled on the middle part of the rotating shaft, a through groove is opened at the bottom end of the sliding block corresponding to the position of the driving gear, part of the driving gear is located in the through groove and meshed with the fixed rack; a driving motor is fixedly installed at the bottom end of the sliding block, and the output shaft of the driving motor is fixedly connected to the rotating shaft;

[0013] A motor switch is installed on the side end of the sliding block, and the motor switch is electrically connected to the driving motor.

[0014] Furthermore, the hot melt welding assembly includes a mounting block that is fixed to the mounting rod, the upper outer end of the mounting block is fixedly connected to the support rod, the top end of the support rod extends out of the mounting block, and the outer end of the support rod is fixedly mounted with a mounting ear plate, the mounting ear plate is rotatably connected to the electric telescopic rod, the piston end of the electric telescopic rod is rotatably connected to the extension rod, the top end of the support rod is fixedly mounted with a snap-on ear plate, the snap-on ear plate is rotatably connected to the middle part of the extension rod, and the end of the extension rod away from the electric telescopic rod is integrally fixed with a hot melt welding plate, the hot melt welding plate is vertically shaped, and is located in the middle of two circular spaces formed by the upper semicircular fixed block and the lower semicircular fixed block on the upper part of the fixed block and the sliding block;

[0015] An electric switch is installed on the side end of the support rod, and the electric switch is electrically connected to the electric telescopic rod.

[0016] Furthermore, a support cross bar is installed between the bottoms of the two groups of support frames, and there are two support cross bars and two mounting rods. The upper part of the mounting block is fixed through one of the mounting rods, and the lower part of the mounting block is fixed through the support cross bar located below the mounting rod.

[0017] The structural design of the utility model is reasonable and reliable, and the hot-melt connection of large-diameter pipes is completed by machinery instead of manual operation. Compared with the existing manual operation, the pipe fixing assembly in this device can fix the two butt-jointing pipe shafts in the circular space formed by the upper semicircular fixed block and the lower semicircular fixed block. There is a fixed end and a movable end. The movable end moves toward the fixed end to a certain position, the electric telescopic rod is turned on, the hot-melt welding plate is rotated between the two pipes, the hot-melt switch is turned on, and hot-melt welding is performed. After hot-melt butt jointing, the pipe butt joint assembly can apply continuous and balanced pressure to the butt joint pipes to ensure the quality of the weld; the hot-melt welding assembly is used to heat the butt ends of the two butt joint pipes, and the positioning and withdrawal of the hot-melt welding plate are controlled by machinery to improve efficiency and avoid the risk of burns. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the present utility model.

[0019] Figure 2 It is a structural diagram of the pipeline docking assembly in the utility model.

[0020] Figure 3 It is a structural schematic diagram of the hot melt welding component in the utility model.

[0021] In the figure: 1- docking pipe, 2- support frame, 3- mounting rod, 4- supporting semicircular plate, 5- fixed block, 6- sliding block, 7- lower semicircular fixed block, 8- upper semicircular fixed block, 9- extension ear plate, 10- adapter plate, 11- pin shaft, 12- locking rod, 13- locking nut, 14- fixed rack, 15- bearing seat, 16- rotating shaft, 17- driving gear, 18- driving motor, 19- motor switch, 20- mounting block, 21- support rod, 22- mounting ear plate, 23- electric telescopic rod, 24- extension rod, 25- snap-on ear plate, 26- hot melt welding plate, 27- electric switch, 28- supporting cross bar. DETAILED DESCRIPTION

[0022] A large diameter PE pipe hot melt welding device, comprising a butt-jointed pipe 1; as shown in the attached figure - attached Figure 3 As shown; it includes two groups of support frames 2, a mounting rod 3 is installed between the two groups of support frames 2, one end of the mounting rod 3 is fixedly installed with a supporting semicircular plate 4, the other end of the mounting rod 3 is fixedly installed with a fixing block 5, the middle part of the mounting rod 3 is slidably installed with a sliding block 6, the top of the fixing block 5 and the top of the sliding block 6 are both fixedly installed with pipe fixing components, the bottom end of the sliding block 6 is installed with a pipe docking component, and a hot melt welding component is installed between the two groups of pipe fixing components.

[0023] In the present invention, the pipe fixing assembly is used to fix the two butt-jointed pipes 1 and ensure that the axes of the two butt-jointed pipes 1 are on the same horizontal line; the pipe butt-jointing assembly is used to move one of the butt-jointed pipes 1 so that the two butt-jointed pipes 1 are close to each other. At the same time, after hot-melt butt-jointing, the pipe butt-jointing assembly can apply continuous and constant pressure to the butt-jointed pipes 1 to ensure the butt-jointing quality; the hot-melt welding assembly is used to heat the butt ends of the two butt-jointed pipes 1, and the positioning and withdrawal of the hot-melt welding plate 26 are controlled by a mechanical structure, which has higher accuracy and safety, reduces safety hazards, and reduces hot-melt errors.

[0024] The two butt-jointed pipes 1 are fixed by a pipe fixing assembly, and then the two butt-jointed pipes 1 are brought close to each other by the pipe butt-jointing assembly. After they are brought close to a suitable position and the contact ends are polished, the hot-melt welding assembly is started to hot-melt the ends of the two butt-jointed pipes 1 that are close to each other. After the hot-melt is in place, the hot-melt welding assembly is quickly removed, and the two butt-jointed pipes 1 are quickly butt-jointed. At the same time, constant and continuous pressure is applied by the pipe butt-jointing assembly until the welding joint cools to room temperature, thereby completing the hot-melt welding butt-jointing of the two butt-jointed pipes 1. This solves the problems of the existing method of hot-melt welding of PE pipes using manual operation, which has the characteristics of long construction period, poor butt-jointing quality, and potential safety hazards.

[0025] As attached Figure 1 As shown; the pipe fixing assembly includes a lower semicircular fixing block 7 fixedly connected to the top of the fixing block 5 and the top of the sliding block 6, the top of the lower semicircular fixing block 7 is rotatably connected to the upper semicircular fixing block (8, the upper semicircular fixing block 8 and the lower semicircular fixing block 7 are combined to form a circular space matching the docking pipe 1, and the center of the circular space on the fixing block 5 and the center of the circular space on the sliding block 6 are located on the same axis.

[0026] The lower semicircular fixing block 7 and the upper semicircular fixing block 8 are integrally fixed with extension ear plates 9 at both ends close to each other, and a mounting groove is opened in the middle of the extension ear plate 9;

[0027] The two mounting grooves at the left end are both equipped with an adapter plate 10. The upper portion of the adapter plate 10 is rotatably connected to the extended ear plate 9 on the upper semicircular fixed block 8 via a pin 11. The lower portion of the adapter plate 10 is rotatably connected to the extended ear plate 9 on the lower semicircular fixed block 7 via a pin 11.

[0028] A locking rod 12 is installed in both mounting grooves at the right end. The lower end of the locking rod 12 is welded to the extension ear plate 9 on the lower semicircular fixing block 7 through a pin 11. The upper end of the locking rod 12 extends out of the mounting groove on the upper semicircular fixing block 8. An external thread is provided on the upper part of the locking rod 12, and a locking nut 13 is screwed on the upper part of the locking rod 12 to fit closely to the top of the extension ear plate 9.

[0029] The pipe fixing assembly is used to fix two butt-welded pipes 1 that need to be butt-welded. At the same time, the structural design in which the center of the circular space on the fixing block 5 and the center of the circular space on the sliding block 6 are located on the same axis can ensure that the central axes of the two butt-welded pipes 1 always remain on the same horizontal line, eliminating the need for operators to perform additional calibration work, saving time and improving butt-welding efficiency.

[0030] As attached Figure 2 As shown; the pipeline docking assembly includes a fixed rack 14 whose one end is fixed to the side end of the fixed block 5, and the other end of the fixed rack 14 passes through the sliding block 6 and the supporting semicircular plate 4 in sequence and is fixed to the side end of the support frame 2, and bearing seats 15 are fixedly installed on both sides of the bottom end of the sliding block 6, and a rotating shaft 16 is jointly installed on the two bearing seats 15. A driving gear 17 is fixedly assembled in the middle of the rotating shaft 16, and a through groove is opened at the bottom end of the sliding block 6 corresponding to the position of the driving gear 17. Part of the driving gear 17 is located in the through groove and is meshed with the fixed rack 14; a driving motor 18 is fixedly installed at the bottom end of the sliding block 6, and the output shaft of the driving motor 18 is fixedly connected to the rotating shaft 16;

[0031] A motor switch 19 is installed on the side end of the sliding block 6 , and the motor switch 19 is electrically connected to the driving motor 18 .

[0032] After the pipe fixing assembly fixes the two butt-jointed pipes 1 in position, the pipe butt-jointing assembly can bring the two butt-jointed pipes 1 close to each other, facilitating subsequent hot-melt welding. At the same time, after hot-melt welding, the drive motor 18 can provide constant and continuous power, and can provide constant pressure to the butt-jointed surfaces of the two butt-jointed pipes 1, thereby improving the quality of hot-melt welding.

[0033] As attached Figure 3 As shown; the hot melt welding assembly includes a mounting block 20 that is fixed on the mounting rod 3, and the upper part of the outer end of the mounting block 20 is fixedly connected to a support rod 21, the top of the support rod 21 extends out of the mounting block 20, and the outer end of the support rod 21 is fixedly installed with a mounting ear plate 22, and the mounting ear plate 22 is rotatably connected to the electric telescopic rod 23, and the piston end of the electric telescopic rod 23 is rotatably connected to the extension rod 24, and the top of the support rod 21 is fixedly installed with a snap-on ear plate 25, which is rotatably connected to the middle part of the extension rod 24, and the end of the extension rod 24 away from the electric telescopic rod 23 is integrally fixed with a hot melt welding plate 26, which is vertical and located in the middle of two circular spaces formed by the upper semicircular fixed block 8 and the lower semicircular fixed block 7 on the upper part of the fixed block 5 and the sliding block 6;

[0034] An electric switch 27 is installed at the side end of the support rod 21 , and the electric switch 27 is electrically connected to the electric telescopic rod 23 .

[0035] The hot melt welding assembly can hot-melt the contact surfaces of the two butt-jointed pipes 1 after the butt-jointing is completed. The positioning and withdrawal of the hot melt welding plate 26 are controlled by the electric telescopic rod 23. At the same time, the extension rod 24 and the support rod 21 can ensure that the hot melt welding plate 26 is always parallel to the contact surface of the butt-jointed pipes 1, ensuring the uniformity of the hot-melt operation of the butt-jointed pipes 1. Compared with the existing manual hot-melt operation performed by operators, this device has a high degree of mechanization, better efficiency and higher weld quality.

[0036] A supporting cross bar 28 is installed between the bottoms of the two groups of support frames 2. There are two supporting cross bars 28 and two mounting rods 3. The upper part of the mounting block 20 is fixed through one of the mounting rods 3, and the lower part of the mounting block 20 is fixed through the supporting cross bar 28 located below the mounting rod 3.

[0037] The supporting crossbar 28 can improve the stability of the two groups of supporting frames 2.

[0038] When working, first excavate the water diversion channel. During the excavation process of the water diversion channel, it is necessary to ensure that the excavation depth is greater than below the freezing line in the area, and pay attention to the excavation slope must be controlled within the range allowed by the specification. Then install the docking pipe 1 (that is, the large-diameter PE pipe for water transmission), place multiple docking pipes 1 one by one next to the water diversion channel, and adjust the straightness of the docking pipe 1.

[0039] Then install the hot melt welding device between the two butt-jointed pipes 1. First, open the upper semicircular fixing block 8 above the fixing block 5, place the end of one of the butt-jointed pipes 1 (hereinafter referred to as the fixed end butt-jointed pipe 1) on the lower semicircular fixing block 7, close the upper semicircular fixing block 8, and fix the lower semicircular fixing block 7 and the upper semicircular fixing block 8 together through the locking rod 12 and the locking nut 13. Then, fix the end of the other butt-jointed pipe 1 (hereinafter referred to as the sliding end butt-jointed pipe 1) in the lower semicircular fixing block 7 and the upper semicircular fixing block 8 above the sliding block 6. The installation steps are the same as described above.

[0040] Then start the pipe docking assembly and the drive motor 18. The output shaft drives the rotating shaft 16 to rotate, and the rotating shaft 16 drives the driving gear 17 to rotate. The driving gear 17 is engaged with the fixed rack 14, so that the driving gear 17 can move on the fixed rack 14, thereby driving the sliding block 6 to slide on the mounting rod 3. The sliding block 6 drives the sliding end docking pipe 1 to move toward the fixed end docking pipe 1. When it moves to a certain position, the drive motor 18 is turned off, and then the contact ends of the sliding end docking pipe 1 and the fixed end docking pipe 1 are polished and cleaned using a grinding disc.

[0041] When the hot-melt welding assembly is completed, the electric telescopic rod 23 is started, and the piston end of the electric telescopic rod 23 changes and drives the extension rod 24 to rotate with the clamping ear plate 25 as the fulcrum. When the piston end of the electric telescopic rod 23 is extended, the hot-melt welding plate 26 descends, and the hot-melt welding plate 26 enters between the sliding end docking pipe 1 and the fixed end docking pipe 1, heating the contact ends of the two. After heating to a certain degree, the piston end of the electric telescopic rod 23 retracts, driving the hot-melt welding plate 26 to rise. At this time, the pipe docking assembly is started, and the drive motor 18 is started to drive the sliding end docking pipe 1 to move in the direction of the fixed end docking pipe 1. After the two are docked, the drive motor 18 does not stop, providing continuous and constant pressure for the sliding end docking pipe 1. After the hot-melt docking of the two is completed, the drive motor 18 is turned off, and the locking nut 13 is loosened to release the connection between the pipe fixing assembly and the sliding end docking pipe 1 and the fixed end docking pipe 1, thereby completing the hot-melt welding of the docking pipe 1.

[0042] In the description of the present invention, it should be understood that the indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0043] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A large diameter PE pipe hot melt welding device, comprising a butt-jointed pipe (1); characterized in that: The utility model comprises two groups of support frames (2), a mounting rod (3) is installed between the two groups of support frames (2), a supporting semicircular plate (4) is fixedly installed on one end of the mounting rod (3), a fixing block (5) is fixedly installed on the other end of the mounting rod (3), a sliding block (6) is slidably installed on the middle part of the mounting rod (3), a pipe fixing assembly is fixedly installed on the top end of the fixing block (5) and the top end of the sliding block (6), a pipe docking assembly is installed on the bottom end of the sliding block (6), and a hot melt welding assembly is installed between the two groups of pipe fixing assemblies.

2. A large diameter PE pipe hot melt welding device according to claim 1, characterized in that: The pipe fixing assembly comprises a lower semicircular fixing block (7) fixedly connected to the top of the fixing block (5) and the top of the sliding block (6); the top of the lower semicircular fixing block (7) is rotatably connected to the upper semicircular fixing block (8); the upper semicircular fixing block (8) and the lower semicircular fixing block (7) are combined to form a circular space matching the docking pipe (1); and the center of the circular space on the fixing block (5) and the center of the circular space on the sliding block (6) are located on the same axis.

3. A large diameter PE pipe hot melt welding device according to claim 2, characterized in that: The two ends of the lower semicircular fixing block (7) and the upper semicircular fixing block (8) close to each other are integrally fixed with an extension ear plate (9), and a mounting groove is provided in the middle of the extension ear plate (9); An adapter plate (10) is installed in both mounting grooves at the left end. The upper portion of the adapter plate (10) is rotatably connected to the extension ear plate (9) on the upper semicircular fixed block (8) via a pin shaft (11). The lower portion of the adapter plate (10) is rotatably connected to the extension ear plate (9) on the lower semicircular fixed block (7) via a pin shaft (11). A locking rod (12) is installed in the two mounting grooves at the right end. The lower end of the locking rod (12) is welded to the extension ear plate (9) on the lower semicircular fixed block (7) through a pin (11). The upper end of the locking rod (12) extends out of the mounting groove on the upper semicircular fixed block (8), and the upper part of the locking rod (12) is provided with an external thread. The upper part of the locking rod (12) is screwed with a locking nut (13) that is tightly attached to the top of the extension ear plate (9).

4. A large diameter PE pipe hot melt welding device according to claim 1, characterized in that: The pipe docking assembly includes a fixed rack (14) whose one end is fixed to the side end of the fixed block (5), and the other end of the fixed rack (14) passes through the sliding block (6) and the supporting semicircular plate (4) in sequence and is fixed to the side end of the support frame (2). Bearing seats (15) are fixedly installed on both sides of the bottom end of the sliding block (6), and a rotating shaft (16) is installed on the two bearing seats (15). A driving gear (17) is fixedly assembled in the middle of the rotating shaft (16). A through groove is opened at the bottom end of the sliding block (6) corresponding to the position of the driving gear (17), and part of the driving gear (17) is located in the through groove and meshed with the fixed rack (14); a driving motor (18) is fixedly installed at the bottom end of the sliding block (6), and the output shaft of the driving motor (18) is fixedly connected to the rotating shaft (16); A motor switch (19) is installed at the side end of the sliding block (6), and the motor switch (19) is electrically connected to the driving motor (18).

5. The large diameter PE pipe hot melt welding device according to claim 2, characterized in that: The hot melt welding assembly includes a mounting block (20) which is fixed on the mounting rod (3), the upper part of the outer end of the mounting block (20) is fixedly connected to the support rod (21), the top end of the support rod (21) extends out of the mounting block (20), and the outer end of the support rod (21) is fixedly installed with a mounting ear plate (22), the mounting ear plate (22) is rotatably connected to the electric telescopic rod (23), the piston end of the electric telescopic rod (23) is rotatably connected to the extension rod (24), the top end of the support rod (21) is fixedly installed with a snap-on ear plate (25), the snap-on ear plate (25) is rotatably connected to the middle part of the extension rod (24), and the end of the extension rod (24) away from the electric telescopic rod (23) is integrally fixed with a hot melt welding plate (26), the hot melt welding plate (26) is vertical and is located in the middle of two circular spaces formed by the upper semicircular fixed block (8) and the lower semicircular fixed block (7) on the upper part of the fixed block (5) and the sliding block (6); An electric switch (27) is installed at the side end of the support rod (21), and the electric switch (27) is electrically connected to the electric telescopic rod (23).

6. A large diameter PE pipe hot melt welding device according to claim 5, characterized in that: A support cross bar (28) is installed between the bottoms of the two groups of support frames (2), and the number of the support cross bar (28) and the number of the mounting rods (3) are both two. The upper part of the mounting block (20) is fixedly connected to one of the mounting rods (3), and the lower part of the mounting block (20) is fixedly connected to the support cross bar (28) located below the mounting rod (3).

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