Supporting device for PE hot melt welding of tap water pipe and use method thereof

Abstract

The application provides a support device for PE hot melt welding of a tap water pipe and a use method, which comprises a base, a pipe fixing mechanism, a sliding rail, a sliding mechanism, a support pile and a rope winding and unwinding mechanism; the application is provided with a plurality of size adjusting assemblies on the fixing mechanism, which can adjust the fixing radius of the pipe fixing ring; further, by setting the magnetic block and the magnetic column, the magnetic block is attracted by the magnetic column when the distance between the magnetic block and the magnetic column is relatively short, and finally the magnetic block and the magnetic column are tightly adsorbed together, so that the clamping plate cannot be clamped in place or the clamping plate is separated from the limiting device; by setting the sliding mechanism and the rope winding and unwinding mechanism, the heating device or the polishing device can be lifted or lowered by rotating the driving hand wheel, further, pulley two is arranged directly above the pipe center, the rope length can be set, so that when the rope is completely released each time, the gravity center of the heating device or the polishing device is exactly on a straight line with the gravity center of the pipe, which is convenient for storage and can automatically align the position, and is convenient to use.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tap water pipe fusion welding, and particularly relates to a supporting device for PE hot melt welding of a tap water pipe and a use method. BACKGROUND

[0002] The PE hot melt welding of a tap water pipe is a method for fusing and welding two tap water pipes into one pipe through heating before use. The existing supporting device for hot melt welding of a tap water pipe has the following technical problems in use: the pipe fixing equipment in the existing supporting device for hot melt welding can only be applied to pipes with the same outer diameter, and has a narrow application range; the existing supporting device for hot melt welding does not have the functions of a heating device and a polishing device, and the heating device and the polishing device need to be manually carried to the middle of the two pipes, which is inconvenient for tool storage and increases the burden of manual carrying. In addition, the heating device and the polishing device need to be manually aligned every time they are carried to the target position, so that the heating device, the polishing device and the center line of the tap water pipe are on a straight line, which is inconvenient to use. SUMMARY

[0003] The application provides a supporting device for PE hot melt welding of a tap water pipe and a use method to solve the above technical problems.

[0004] The utility model provides a support device and using method for PE hot melt welding of tap water pipe, the support device includes base, pipeline fixed establishment, slide rail, sliding mechanism, support pile and rope take -up mechanism, pipeline fixed establishment is two sets, two sets of pipeline fixed establishment is distributed on the base upper end surface symmetry, pipeline fixed establishment includes fixed stake one, hydraulic device one and pipeline fixed ring, the center line of two sets of pipeline fixed ring is on the same straight line, one end of hydraulic device one is fixedly connected with fixed stake one, the other end of hydraulic device one is fixedly connected with pipeline fixed ring, be provided with a plurality of size adjusting assembly on fixed establishment, size adjusting assembly includes adjusting rod and guide sleeve, the outer wall of pipeline fixed ring is fixedly connected with guide sleeve, at least four guide sleeves are provided on each pipeline fixed ring, the included angle between the center line of adjacent two guide sleeves is same, the side wall of guide sleeve is provided with the through -hole extending in vertical direction, the side wall top of guide sleeve is provided with the through -hole and is equipped with the clamping plate in series, a plurality of size adjusting baffle is fixedly connected on the side wall of size adjusting rod, every size adjusting baffle corresponds to a pipeline inner diameter, the side wall of size adjusting rod fixedly connected with size adjusting baffle is opposite to the side of guide sleeve and is provided with the through -hole, the bottom of size adjusting rod is provided with the contact block and is contacted with pipeline, size adjusting rod passes through guide sleeve and pipeline fixed ring and is in close contact with the outer wall of pipeline, the detachable fixed connection of base and slide rail, sliding mechanism includes fixed stake two, hydraulic device two and sliding seat, fixed stake two is fixedly connected with base, the sliding seat is clamped on the slide rail and can slide left and right along the slide rail, one end of hydraulic device two is fixedly connected with fixed stake two, and the other end is fixedly connected with sliding seat, the top of sliding seat is fixedly connected with support pile, the side fixedly connected with suspension arm of support pile is close to pipeline fixed establishment, the support pile and suspension arm are also provided with rope take -up mechanism, the rope take -up mechanism includes fixed shaft, anti -reverse tooth sleeve rope storage sleeve, driving hand wheel, pulley one and pulley two, the fixed shaft is horizontally arranged and the fixed shaft one end is fixedly connected with support pile, the anti -reverse tooth sleeve is sleeved on the fixed shaft and is fixedly connected with support pile, the anti -reverse tooth sleeve is provided with the internal toothed plate outside, the outer toothed plate is provided with the outer toothed plate on the inner wall of rope storage sleeve and is equipped with the internal toothed plate in series, the internal toothed plate and outer toothed plate are interlocked and every toothed plate on the internal toothed plate can fill the gap between two adjacent outer toothed plates, one end of rope storage sleeve is fixedly connected with driving hand wheel, the other end of rope storage sleeve is sleeved on the fixed shaft, pulley one and pulley two are all rotationally connected at the bottom of suspension arm, pulley one is located directly above rope storage sleeve, pulley two is located directly above the center line of pipeline fixed ring.

[0005] As a preferred scheme of the present application, the pipeline fixed ring is formed by two half rings, and each half ring is fixedly connected with a connecting lug on the outer side wall of two ends.

[0006] As a preferred scheme of the present application, a semi-circular groove and a through hole are formed on the connecting lug, and the two semi-circles are fixedly connected by the connecting lug; one end of the hydraulic device is fixedly connected to the fixed pile by a fixing plate and a bolt, and the other end of the hydraulic device away from the fixed pile penetrates the cylindrical groove formed by the two semi-circular grooves and is fixedly connected by a bolt.

[0007] As a preferred scheme of the present application, a limiting device for providing downward pressure to the free end of the clamping plate is further arranged on the guide sleeve.

[0008] As a preferred scheme of the present application, a magnetic block is fixedly connected to the side of the free end of the clamping plate close to the guide sleeve, the magnetic block is close to the freely movable end of the clamping plate, a magnetic column attracting the magnetic block is arranged on the limiting device, and the magnetic column firmly attracts the magnetic block to prevent the clamping plate from being displaced during the supporting process.

[0009] As a preferred scheme of the present application, a T-shaped sliding groove is formed at the top end of the base, a sealing plate is arranged at both ends of the sliding groove in a matched mode, the sealing plate is bolt-connected to the base, a T-shaped sliding block is fixedly connected to the bottom end of the sliding rail, and the sliding rail is clamped in the T-shaped sliding groove through the T-shaped sliding block to achieve detachable fixed connection with the base.

[0010] As a preferred scheme of the present application, a limiting plate one is arranged at the end of the rope storage sleeve close to the driving handle, a limiting plate two is arranged at the end of the fixed shaft away from the support pile, and the limiting plate one is located between the support pile and the limiting plate two.

[0011] As a preferred scheme of the present application, an annular baffle preventing the rope from slipping out of the rope storage sleeve is arranged on the rope storage sleeve.

[0012] As a preferred scheme of the present application, during the whole process of the rope storage and release, the driving handle is rotated to drive the rope storage sleeve to rotate, the rope storage sleeve winds or releases the rope, the rope drives the heating device to rise or descend, the rope storage sleeve is pushed towards the support pile until the rope storage sleeve and the anti-reverse tooth sleeve are completely engaged together, the rope storage sleeve remains stationary, the length of the released rope remains unchanged, and the heating device remains unchanged.

[0013] As a preferred scheme of the present application, during the whole process of the size adjustment, the clamping plate is rotated until the clamping plate is away from the through hole of the guide sleeve, the size adjustment rod is pressed downward or pulled upward so that the size adjustment baffle is just clamped at the clamping plate, the clamping plate is turned back to the upper end of the through hole, and the clamping plate is kept above the size adjustment baffle, at this time, the free end of the clamping plate is completely pressed by the limiting device, and the pipe fixing ring successfully adjusts the fixed radius.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] 1. The present application is provided with several size adjusting components on the fixing mechanism, by rotating the clamping plate until the clamping plate is away from the through hole of the guide sleeve, pressing down or pulling up the size adjusting rod, the size adjusting baffle is just clamped at the clamping plate, the clamping plate is turned back to the upper end of the through hole, and the clamping plate is kept above the size adjusting baffle, at this time the free end of the clamping plate is completely pressed by the limiting device, the pipe fixing ring is fixed, and the radius adjustment is successful; further, by setting the magnetic block and the magnetic column, the magnetic block is attracted by the magnetic column when the distance between the magnetic block and the magnetic column is close, and finally the magnetic block and the magnetic column are tightly adsorbed together, avoiding that the clamping plate is not clamped in place or the clamping plate is separated from the limiting device.

[0016] 2. The present application is provided with a sliding mechanism, which can drive the sliding seat to slide left and right on the slide rail by hydraulic device two, realizing mechanical carrying of the heating device and the polishing device. The heating device and the polishing device are always arranged on the suspension arm, which is convenient for storage and moving, reducing the burden of workers.

[0017] 3. The present application is provided with a rope winding and unwinding mechanism, wherein the driving hand wheel is rotated to drive the rope winding sleeve to rotate, the rope winding sleeve winds or releases the rope, and the rope drives the heating device to rise or fall; when the rope winding sleeve and the anti-reverse tooth sleeve are completely engaged together in the direction of the supporting pile, the rope winding sleeve remains stationary, and the length of the released rope remains unchanged, at this time the heating device remains unchanged, further, the pulley two is arranged directly above the center of the pipeline, and in specific construction operation, the appropriate rope length is matched, so that the center of gravity of the heating device or the polishing device is just on a straight line with the center of gravity of the pipeline when the rope is completely released each time, realizing automatic alignment and accurate positioning. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments. Obviously, the drawings described below only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0019] Figure 1 It is a first perspective view of the structure of the present application (the present application mainly introduces the supporting device, therefore the rope, the heating device and the polishing device are only used as auxiliary description, and are not shown in the figure).

[0020] Figure 2 It is a second perspective view of the structure of the present application. Figure 1 It is an enlarged schematic view of the driving hand wheel, the rope winding sleeve and the anti-reverse tooth sleeve and the parts near them.

[0021] Figure 3 It is an enlarged schematic view of the adjusting rod and the parts near it. Figure 1 It is an enlarged schematic view of the adjusting rod and the parts near it.

[0022] Figure 4 is a side view of the present application.

[0023] Figure 5 is a side view of the present application. Figure 4 is a side view of the present application.

[0024] Figure 6 is a side view of the present application.

[0025] Figure 7 is a side view of the present application. Figure 1 is a side view of the present application.

[0026] Figure 8 is a side view of the present application.

[0027] In the figure: 1, base; 2, pipeline fixing mechanism; 201, fixed pile one; 202, hydraulic device one; 203, pipeline fixing ring; 3, slide rail; 4, sliding mechanism; 401, fixed pile two; 402, hydraulic device two; 403, sliding seat; 5, support pile; 6, rope winding and unwinding mechanism; 601, fixed shaft; 602, anti-reverse tooth sleeve; 603, rope storage sleeve; 604, driving hand wheel; 605, pulley one; 606, pulley two; 7, size adjusting assembly; 701, adjusting rod; 702, guide sleeve; 703, clamping plate; 704, size adjusting baffle; 705, contact block; 8, suspension arm; 9, connecting lug; 10, limiting device; 11, magnetic block; 12, magnetic column; 13, sealing plate; 14, limiting plate one; 15, limiting plate two; 16, annular baffle. DETAILED DESCRIPTION

[0028] In order to make the technical personnel in the art better understand the technical solutions of the present application, the present application will be described in detail below in conjunction with the drawings, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application. In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below. In the following description, a lot of specific details are set forth in order to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and the skilled in the art can make similar improvements without departing from the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below. The technical solutions of the present application will be further described below in conjunction with the drawings:

[0029] Example one

[0030] As Figures 1-5 andFigure 8 The utility model discloses a tap PE hot melt welding support device and method, including base 1, pipeline fixed establishment 2, slide rail 3, sliding mechanism 4, support pile 5 and rope take -up mechanism 6, pipeline fixed establishment 2 is two sets, two sets of pipeline fixed establishment 2 are distributed on the end surface symmetry of base 1, pipeline fixed establishment 2 includes fixed stake one 201, hydraulic device one 202 and pipeline fixed ring 203, and the center line of two sets of pipeline fixed ring 203 is on the same straight line, and the pipeline fixed ring 203 is formed by two half rings, and each fixedly connected with a connecting lug 9 on the outer side wall of two ends of each half ring, and a semicircular groove and a through hole are formed on the connecting lug 9, and the two half rings are fixedly connected through the connecting lug 9, and the end of hydraulic device one 202 is fixedly connected with fixed stake through fixed plate and bolt, and the end, away from fixed stake one 201, of hydraulic device one 202 passes through the cylindrical recess formed by the two semicircular recesses and is fixedly connected through bolt, and the center line of two sets of pipeline fixed ring 203 is on the same straight line, can make the both sides fixed pipeline center line of pipeline alignment, and the pipeline fixed ring 203 is formed by two half rings and is detachably connected through connecting lug 9 and bolt, facilitating pipeline installation.

[0031] A plurality of size adjusting assemblies 7 are arranged on the fixed establishment 2, the size adjusting assembly 7 includes an adjusting rod 701 and a guide sleeve 702, the guide sleeve 702 is fixedly connected to the outer wall of the pipeline fixed ring 203, at least four guide sleeves 702 are arranged on each pipeline fixed ring 203, and the included angles between the center lines of the adjacent two guide sleeves 702 are the same, a vertical direction extending through hole is formed in one side wall of the guide sleeve 702, and a clamping plate 703 is arranged at the top end of the side wall of the guide sleeve 702, a plurality of size adjusting baffle plates 704 are fixedly connected to one side wall of the adjusting rod 701, and each size adjusting baffle plate 704 corresponds to an inner diameter of the pipeline, the side wall of the adjusting rod 701, on which the size adjusting baffle plates 704 are fixedly connected, faces one side of the guide sleeve 702 on which the through hole is formed, a contact block 705 in contact with the pipeline is arranged at the bottom end of the adjusting rod 701, the adjusting rod 701 penetrates through the guide sleeve 702 and the pipeline fixed ring 203 and is in close contact with the outer wall of the pipeline, the distance between the contact block 705 and the outer wall of the pipeline can be adjusted by sliding the adjusting rod 701 up and down, the fixed radius of the pipeline fixed ring 203 can be replaced, the size can be fixed by pressing the size adjusting baffle plate 704 with the baffle plate, a T-shaped sliding groove is formed at the top end of the base 1, sealing plates 13 are arranged at the two ends of the T-shaped sliding groove in a matched mode, the sealing plates 13 are connected to the base 1 through bolts, a T-shaped sliding block is fixedly connected to the bottom end of the slide rail 3, and the slide rail 3 is clamped in the T-shaped sliding groove through the T-shaped sliding block to realize detachable fixed connection with the base 1.

[0032] Example two

[0033] The second embodiment is further improvement of the connection relationship and mechanism of the clamping plate 703 in the first embodiment based on the first embodiment.

[0034] In combination Figures 1-8 In the first embodiment, one end of the clamping plate 703 is rotatably connected to the guide sleeve 702, and the guide sleeve 702 is further provided with a limiting device 10 for providing downward pressure on the free end of the clamping plate 703. The free end of the clamping plate 703 is fixedly connected to a magnetic block 11 near the side of the guide sleeve 702, and the magnetic block 11 is close to the freely movable end of the clamping plate 703. The limiting device 10 is provided with a magnetic column 12 that is attracted to the magnetic block 11, and the magnetic column 12 firmly attracts the magnetic block 11 to prevent the clamping plate 703 from shifting during the supporting process. Rotate the clamping plate 703 until the through hole of the clamping plate 703 is away from the guide sleeve 702, press the size adjusting rod 701 downward or pull it upward, so that the size adjusting baffle 704 is just clamped on the clamping plate 703. Turn the clamping plate 703 back to the upper end of the through hole, and keep the clamping plate 703 above the size adjusting baffle 704. At this time, the free end of the clamping plate 703 is completely pressed by the limiting device 10, and the pipe fixing ring 203 is successfully fixed in the radius adjustment.

[0035] The third embodiment

[0036] The third embodiment is a further improvement of the second embodiment, and the specific improvement is to add a sliding mechanism 4 and a rope winding and unwinding mechanism 6 based on the second embodiment to realize the storage, mechanical carrying and automatic alignment of the heating device or the polishing device.

[0037] In combination Figures 1-8On the basis of embodiment two, wherein the sliding mechanism 4 comprises a fixed stake two 401, a hydraulic device two 402 and a sliding seat 403, the fixed stake two 401 is fixedly connected with the base 1, the sliding seat 403 is clamped on the slide rail 3 and can slide left and right along the slide rail 3, one end of the hydraulic device two 402 is fixedly connected with the fixed stake two 401, and the other end is fixedly connected with the sliding seat 403; the top end of the sliding seat 403 is fixedly connected with the support stake 5; the support stake 5 is fixedly connected with the suspension arm 8 on the side close to the pipeline fixing mechanism 2, and the support stake 5 and the suspension arm 8 are also provided with a rope winding and unwinding mechanism 6; the rope winding and unwinding mechanism 6 comprises a fixed shaft 601, an anti-reverse gear sleeve 602, a rope storage sleeve 603, a driving hand wheel 604, a pulley one 605 and a pulley two 606, the fixed shaft 601 is horizontally arranged, one end of the fixed shaft 601 is fixedly connected with the support stake 5, the anti-reverse gear sleeve 602 is sleeved on the fixed shaft 601 and is fixedly connected with the support stake 5, an internal toothed plate is arranged outside the anti-reverse gear sleeve 602, an external toothed plate is arranged on the inner wall of the rope storage sleeve 603 and is matched with the internal toothed plate, the internal toothed plate and the external toothed plate are mutually engaged, and each toothed plate on the internal toothed plate can fill the gap between two adjacent external toothed plates; one end of the rope storage sleeve 603 is fixedly connected with the driving hand wheel 604, and the other end of the rope storage sleeve 603 is sleeved on the fixed shaft 601; a limiting plate one 14 is arranged on the inner end of the rope storage sleeve 603 close to the driving hand wheel 604, a limiting plate two 15 is arranged on the end of the fixed shaft 601 away from the support stake 5, and the limiting plate one 14 is located between the support stake 5 and the limiting plate two 15; an annular baffle 16 for preventing the rope from slipping out of the rope storage sleeve 603 is arranged on the rope storage sleeve 603; the pulley one 605 and the pulley two 606 are both rotationally connected at the bottom end of the suspension arm 8, the pulley one 605 is located directly above the rope storage sleeve 603, and the pulley two 606 is located directly above the center line of the pipeline fixing ring 203. Rotating the driving hand wheel 604 drives the rope storage sleeve 603 to rotate, the rope storage sleeve 603 winds or releases the rope, the rope drives the heating device to rise or fall, and the rope unwinds at a constant length when the rope storage sleeve 603 and the anti-reverse gear sleeve 602 are completely engaged together, so that the heating device remains unchanged.

[0038] The principles and implementation manners of the present application are described by using specific examples in the present application, and the above examples are only used to help understand the method of the present application and its core idea. The above is only the preferred implementation manner of the present application, and it should be pointed out that, due to the limitedness of the expression, there are objectively infinite specific structures, and for ordinary skilled persons in the technical field, some improvements, refinements or changes can be made without departing from the principle of the present application, and the above technical features can also be combined in a proper manner; the improvements, refinements, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present application.

Claims

1. A support device for PE hot melt welding of a water pipe, characterized in that, The support device comprises a base (1), a pipeline fixing mechanism (2), a slide rail (3), a sliding mechanism (4), a support pile (5) and a rope winding and unwinding mechanism (6); the pipeline fixing mechanism (2) is symmetrically distributed on the upper end surface of the base (1); The sliding mechanism (4) comprises a second fixing pile (401), a second hydraulic device (402) and a sliding seat (403), the second fixing pile (401) is fixedly connected with the base (1), the sliding seat (403) is clamped on the slide rail (3) and can slide left and right along the slide rail (3), one end of the second hydraulic device (402) is fixedly connected with the second fixing pile (401), and the other end is fixedly connected with the sliding seat (403); the top end of the sliding seat (403) is fixedly connected with the support pile (5); The rope winding and unwinding mechanism (6) comprises a fixed shaft (601), an anti-reverse tooth sleeve (602), a rope storage sleeve (603), a driving hand wheel (604), a pulley one (605) and a pulley two (606); A plurality of size adjusting assemblies (7) are arranged on the fixing mechanism (2), the size adjusting assembly (7) comprises a size adjusting rod (701) and a guide sleeve (702), the guide sleeve (702) is fixedly connected to the outer wall of the pipeline fixing ring (203), at least four guide sleeves (702) are arranged on each pipeline fixing ring (203), and the included angles between the center lines of adjacent two guide sleeves (702) are the same; a through hole extending in the vertical direction is formed in one side wall of the guide sleeve (702), and a clamping plate (703) is arranged at the top end of the side wall of the guide sleeve (702) where the through hole is formed; a plurality of size adjusting baffle plates (704) are fixedly connected to one side wall of the size adjusting rod (701), and each size adjusting baffle plate (704) corresponds to an inner diameter of a pipeline; the side wall of the size adjusting rod (701) where the size adjusting baffle plates (704) are fixedly connected faces one side of the guide sleeve (702) where the through hole is formed; a contact block (705) in contact with the pipeline is arranged at the bottom end of the size adjusting rod (701), and the size adjusting rod (701) penetrates through the guide sleeve (702) and the pipeline fixing ring (203) and tightly contacts the outer wall of the pipeline, The anti-reverse tooth sleeve (602) is arranged on the fixed shaft (601) and fixedly connected with the support pile (5), and an inner tooth plate is arranged outside the anti-reverse tooth sleeve (602); A limiting device (10) for providing a downward pressure to the free end of the clamping plate (703) is further arranged on the guide sleeve (702); A magnetic block (11) is fixedly connected to the side of the clamping plate (703) close to the guide sleeve (702), the magnetic block (11) is close to the freely movable end of the clamping plate (703), a magnetic column (12) that can be attracted to the magnetic block (11) is arranged on the limiting device (10), and the magnetic column (12) firmly attracts the magnetic block (11) to prevent the clamping plate (703) from being displaced during the supporting process.

2. The support device for PE hot melt welding of water pipes according to claim 1, characterized in that, The pipeline fixing mechanism (2) comprises a fixing pile (201), a hydraulic device (202) and a pipeline fixing ring (203), the center lines of the two sets of pipeline fixing rings (203) are on the same straight line, one end of the hydraulic device (202) is fixedly connected with the fixing pile (201), the other end of the hydraulic device (202) is fixedly connected with the pipeline fixing ring (203), the base (1) is detachably fixedly connected with the slide rail (3), the support pile (5) is fixedly connected with the hanging arm (8) on the side close to the pipeline fixing mechanism (2), the support pile (5) and the hanging arm (8) are further provided with a rope winding and unwinding mechanism (6), the fixing shaft (601) is horizontally arranged, one end of the fixing shaft (601) is fixedly connected with the support pile (5), the inner wall of the rope storage sleeve (603) is provided with an outer gear plate matched with an inner gear plate, the inner gear plate and the outer gear plate are engaged with each other, and each gear plate on the inner gear plate can fill the gap between two adjacent outer gear plates, one end of the rope storage sleeve (603) is fixedly connected with the driving hand wheel (604), and the other end of the rope storage sleeve (603) is sleeved on the fixing shaft (601), the pulley (605) and the pulley (606) are both rotationally connected to the bottom end of the hanging arm (8), the pulley (605) is located directly above the rope storage sleeve (603), the pulley (606) is located directly above the center line of the pipeline fixing ring (203), the pipeline fixing ring (203) is formed by two half rings, and one connecting lug (9) is fixedly connected to the outer side wall of each half ring.

3. The support device for PE hot melt welding of water mains according to claim 2, characterized in that A semicircular groove and a through hole are formed in the connecting lug (9), and the two half rings are fixedly connected through the connecting lug (9); one end of the hydraulic device (202) is fixedly connected with the fixing pile through a fixing plate and bolts, and the other end of the hydraulic device (202) away from the fixing pile (201) penetrates through the cylindrical groove formed by the two semicircular grooves and is fixedly connected through bolts.

4. The support device for PE hot melt welding of water pipes according to claim 2, characterized in that, A T-shaped sliding groove is formed in the top end of the base (1), a sealing plate (13) is matched arranged at the two ends of the sliding groove, the sealing plate (13) is bolted to the base (1), a T-shaped sliding block is fixedly connected to the bottom end of the slide rail (3), and the slide rail (3) is clamped in the T-shaped sliding groove through the T-shaped sliding block, so that the slide rail (3) is detachably fixedly connected with the base (1).

5. The support device for PE hot melt welding of water pipes according to claim 2, characterized in that, A limiting plate (14) is arranged on the side of the rope storage sleeve (603) close to the driving hand wheel (604), and a limiting plate (15) is arranged on the side of the fixing shaft (601) away from the support pile (5), and the limiting plate (14) is located between the support pile (5) and the limiting plate (15).

6. The support device for PE hot melt welding of water pipes according to claim 2, characterized in that An annular baffle (16) is arranged on the rope storage sleeve (603) to prevent the rope from slipping out of the rope storage sleeve (603).

7. A method of using a support device for PE hot melt welding of a water pipe according to any one of claims 1-6, characterized in that, The method comprises: a whole process of winding and unwinding the rope, which comprises rotating a driving hand wheel (604), driving the hand wheel (604) to rotate a rope storage sleeve (603), winding or releasing the rope by the rope storage sleeve (603), and driving the heating device to ascend or descend by the rope; pushing the rope storage sleeve (603) towards the support pile (5) until the rope storage sleeve (603) and the anti-reverse tooth sleeve (602) are completely engaged together, keeping the rope storage sleeve (603) stationary and the length of the released rope unchanged, and keeping the heating device unchanged.

8. The method of claim 7, wherein, The method further comprises: a whole process of size adjustment, which comprises rotating the clamping plate (703) until the clamping plate (703) is away from the through hole of the guide sleeve (702), pressing down or pulling up the size adjustment rod (701), making the size adjustment baffle (704) just fit in the clamping plate (703), rotating the clamping plate (703) back to the upper end of the through hole, keeping the clamping plate (703) above the size adjustment baffle (704), and keeping the free end of the clamping plate (703) completely pressed by the limiting device (10), and fixing the pipe fixing ring (203) to successfully adjust the radius.

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