Mounting device and mounting method for heat distribution pipeline

Abstract

The invention relates to the technical field of heat supply, in particular to a mounting device and mounting method.The mounting device comprises a supporting platform, two supports and two hydraulic oil cylinders, the two supports are fixedly connected to the front end and the rear end of the lower surface of the supporting platform correspondingly, and universal wheels are arranged at the bottoms of the supports so that the supporting platform can move; the two hydraulic oil cylinders are installed at the left end and the right end of the upper surface of the supporting platform correspondingly, a lifting plate is installed at the output ends of the hydraulic oil cylinders, two first electric sliding tables opposite in the left-right direction are installed on the lower surface of the lifting plate, and a rotating mechanism is installed in the center of the lower surface of the lifting plate. A welding mechanism and a grinding mechanism are mounted at the upper and lower ends of the right side wall of the rotating mechanism correspondingly. The pipeline welding pretreatment is achieved, welding is firmer, the service life is prolonged, automatic pipeline welding is achieved, the welding width can be adjusted, various pipeline welding requirements are met, and the welding efficiency and the welding quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of heating, and in particular to an installation device and an installation method for a thermal pipeline. Background Art

[0002] Heating refers to supplying heat to buildings to maintain a certain indoor temperature. It is a social service that meets the basic living needs of residents in northern my country in winter. Heating relies on pipelines to transport fluids, allowing hot water to circulate indoors and raise indoor temperatures.

[0003] When laying pipelines, they need to be installed and pre-buried. Thermal pipelines have a large outer diameter and are heavy. They are easily contaminated by soil. Welding is not firm and leaks are likely to occur. When welders weld pipelines, they need to repeatedly adjust their positions because the pipelines are round. This interrupts the welding process and is more difficult than straight-line welding. The welding quality and efficiency are difficult to guarantee. Therefore, an automatic installation device for thermal pipelines is introduced. Summary of the invention

[0004] In order to overcome the shortcomings of weak welding and low welding efficiency in the prior art, the technical problem to be solved by the present invention is an installation device and an installation method for a thermal pipeline.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an installation device for a thermal pipeline, comprising a support platform, two brackets and two hydraulic cylinders, the two brackets are respectively fixedly connected to the front and rear ends of the lower surface of the support platform, a universal wheel is arranged at the bottom of the bracket to enable the support platform to move, the two hydraulic cylinders are respectively installed at the left and right ends of the upper surface of the support platform, a lifting plate is installed at the output end of the hydraulic cylinder, two first electric slides opposite to each other are installed on the lower surface of the lifting plate, a rotating mechanism is installed at the center of the lower surface of the lifting plate, a welding mechanism and a grinding mechanism are respectively installed at the upper and lower ends of the right side wall of the rotating mechanism, the outer surface of the pipeline is ground by the grinding mechanism, and the pipeline is automatically welded by the welding mechanism, and a clamping mechanism is installed at the output end of the first electric slide to clamp and fix the pipeline; The rotating mechanism comprises a first supporting ring installed at the center of the lower surface of the lifting plate, a first outer gear ring capable of rotating is installed inside the first supporting ring, a first motor is installed on the left side wall of the first supporting ring, a first gear meshingly connected with the first outer gear ring is installed at the output end of the first motor, and when the first motor drives the first gear to rotate, the first outer gear ring can rotate clockwise and counterclockwise; The welding mechanism and the grinding mechanism are moved around the pipeline through the first outer gear ring and the first gear.

[0006] Preferably, the welding mechanism comprises a second electric slide mounted on the top of the right side wall of the first outer gear ring, a mounting box is mounted on the output end of the second electric slide, a second motor is mounted on the left end of the upper surface of the mounting box, a shaft sleeve is mounted on the output end of the second motor, a plurality of rotating rods are mounted on the outer wall of the shaft sleeve at equal distances along the circumferential direction, a plug hole is provided on the outer side of the rotating rod, a shaking plate capable of sliding left and right is plugged into the right side wall of the mounting box, one end of a connecting rod is connected to the left side of the lower surface of the shaking plate through a pin shaft, and a plug rod is vertically plugged into the other end of the connecting rod, so that when the plug rod is inserted into the plug hole, a shaking plate capable of sliding left and right is plugged into the right side wall of the mounting box, The rotating rod is linked with the shaking plate, and the inner cavity at the top of the plug rod is respectively plugged with a first spring and a card ball from the inside to the outside. Under the action of the elastic force of the first spring, the card ball is pushed to move outward, and the card ball is stuck on the upper surface of the rotating rod to position the plug rod. A gun head is vertically installed on the right side of the shaking plate, and a short circuit occurs between the gun head and the pipeline to generate high temperature. A machine base is installed on the right end of the upper surface of the installation box, and a third motor is installed on the upper surface of the machine base. A mounting seat is installed at the output end of the third motor, and a welding wire coil is installed on the outer wall of the mounting seat. When the third motor drives the welding wire coil to rotate, welding wire can be delivered to the gun head; By inserting the rod into the sockets at different positions, the rotation diameter of the connecting rod is changed, and the left and right swing distance of the shaking plate is adjusted, thereby adjusting the welding width.

[0007] Preferably, the lengths of the rotating rods on the sleeves are different.

[0008] Preferably, the top of the insertion rod is conical in shape.

[0009] Preferably, the grinding mechanism comprises a third electric slide installed at the bottom of the right side wall of the first outer gear ring, a support plate is installed at the output end of the third electric slide, slide bars are inserted at both the front and rear sides of the support plate, a second spring is sleeved on the outer wall of the slide bar, a processing assembly is installed on the top of the slide bar, and the processing assembly is pushed upward under the elastic force of the second spring; The processing component is always in contact with the pipeline surface under the push of the second spring force, so that the pipeline is polished without dead angles.

[0010] Preferably, the purpose is to polish the welding position of the pipeline and clean impurities. The processing component includes a gear box installed on the top of the slide rod, and a fourth motor is installed on the left side of the gear box. Polishing rollers and roller brushes are respectively installed on the front and rear sides of the right side wall of the gear box through bearings, and the output end of the fourth motor is connected to the polishing roller. The left ends of the polishing roller and the roller brush are both equipped with second gears that mesh with each other, so that the polishing roller and the roller brush rotate in opposite directions. The polishing roller polishes the welding position on the outer surface of the pipeline, and the roller brush cleans impurities on the surface of the pipeline to improve the strength of the welding.

[0011] Preferably, the clamping mechanism comprises a second support ring installed at the output end of the first electric slide, three clamping plates are inserted at equal intervals along the circumferential direction on the outer side of the second support ring, a plurality of tooth grooves are opened at equal intervals on the outer wall of the clamping plates, a rotatable turntable is installed in the inner cavity of the second support ring, a steel belt and a second outer tooth ring are installed on the left and right surfaces of the turntable respectively, and the steel belt is meshedly connected with the tooth groove, a fifth motor is installed on the right side wall of the second support ring, and a third gear meshedly connected with the second outer tooth ring is installed at the output end of the fifth motor; The steel belt squeezes the tooth groove inward or outward, allowing the three clamping plates to move synchronously to achieve centering clamping of the pipe.

[0012] Preferably, the steel belt is distributed on the outer wall of the turntable in a spiral shape.

[0013] A method for installing a thermal pipeline installation device comprises the following steps: Step 1: The clamping mechanism is driven to move by the first electric slide, so that the second support ring is put on the pipe. The fifth motor drives the third gear to rotate. Under the transmission condition of the third gear and the second outer gear ring, the steel belt rotates clockwise. The curved surface of the steel belt squeezes the tooth groove inward. The three clamping plates move inward at the same time to implement centering clamping on the pipe. The first electric slide is used to move the pipe. The joints of the two pipes are located between the welding mechanism and the grinding mechanism to achieve positioning before pipe welding. Step 2: The support plate is driven to move by the third electric slide, and the second spring force causes the polishing roller and the roller brush to contact the outer surface of the pipe. At this time, the fourth motor is started, and the polishing roller and the roller brush are driven to rotate in opposite directions at the same time under the conditions of the two second gears; Step 3: The first motor drives the first gear to rotate, and the polishing roller and the roller brush move around the pipe under the transmission condition of the first gear and the first outer gear ring. The polishing roller polishes the pipe, and then the roller brush cleans the polishing position of the pipe to achieve pre-welding treatment; Step 4: The second electric slide drives the installation box to move, so that the gun head is close to the welding position. The second motor drives one end of the connecting rod to make a circular motion through the rotating rod, and the other end of the connecting rod pulls the shaking plate to swing left and right. The gun head moves with the shaking plate. The third motor drives the welding wire roll to rotate and feed the welding wire to the gun head. As the gun head moves around the pipeline, the pipeline is welded. Step five, when the welding width needs to be adjusted, pull down the plug rod to move it out of the socket, move the plug rod, and insert the plug rod into the socket on the rotating rod of the required length. Under the action of the first spring force, the card ball is stuck on the upper surface of the rotating rod, and the plug rod is positioned. The rotating rod drives the connecting rod to make a circular motion to change the diameter, thereby changing the swing distance of the shaking plate, thereby adjusting the welding width.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The first motor drives the first gear to rotate, and the welding mechanism and the grinding mechanism rotate around the pipe under the transmission of the first gear and the first outer gear ring; 1. The present invention pushes the gear box through the elastic force of the second spring, so that the polishing roller and the roller brush are always in contact with the outer surface of the pipe. The polishing roller and the roller brush rotate under the transmission of the two second gears. The polishing roller polishes the welding position of the pipe, and the roller brush cleans the welding position, so as to realize the pre-treatment of the pipe welding, make the welding more firm, and prolong the service life; 2. The present invention connects the connecting rod to the rotating rods of different lengths by inserting the insert rod into the slots of the rotating rods of different lengths. The second motor drives one end of the connecting rod to make a circular motion, and the other end of the connecting rod pulls the shaking plate to swing left and right, thereby adjusting the swing distance of the gun head to realize automatic pipeline welding. The welding width can be adjusted to meet various pipeline welding requirements and improve welding efficiency and welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the rotating mechanism structure; Figure 3 It is the front cross-sectional view of the rotating mechanism; Figure 4 It is a schematic diagram of the welding mechanism structure; Figure 5 This is the main cross-sectional view of the welding mechanism; Figure 6 for Figure 5 Enlarged view of point A in the middle; Figure 7 It is the top view of the rotating rod; Figure 8 This is a schematic diagram of the grinding mechanism structure; Fig. 9 A top view of a processing assembly is provided; Fig.10 It is a schematic diagram of the clamping mechanism structure; Fig.11 It is a front cross-sectional view of the clamping mechanism; Fig.12 This is the left view of the turntable.

[0016] In the figure: 1, support platform; 2, bracket; 3, hydraulic cylinder; 4, lifting plate; 5, first electric slide; 6, rotating mechanism; 7, welding mechanism; 8, grinding mechanism; 9, clamping mechanism; 61, first support ring; 62, first outer gear ring; 63, first motor; 64, first gear; 71, second electric slide; 72, installation box; 73, second motor; 74, bushing; 75, rotating rod; 76, jack; 77, shaking plate; 78, connecting rod; 79, plug rod; 710, first spring; 71 1. Card ball; 712. Gun head; 713. Machine base; 714. Third motor; 715. Mounting base; 81. Third electric slide; 82. Support plate; 83. Slide rod; 84. Second spring; 85. Processing assembly; 851. Gear box; 852. Fourth motor; 853. Polishing roller; 854. Roller brush; 855. Second gear; 91. Second support ring; 92. Clamp; 93. Tooth groove; 94. Turntable; 95. Steel belt; 96. Second outer gear ring; 97. Fifth motor; 98. Third gear. DETAILED DESCRIPTION

[0017] 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.

[0018] The present invention provides a technical solution: an installation device and an installation method for a thermal pipeline, such as Figure 1-Figure 12 As shown, it includes a support platform 1, two brackets 2 and two hydraulic cylinders 3. The two brackets 2 are respectively fixedly connected to the front and rear ends of the lower surface of the support platform 1. Universal wheels are arranged at the bottom of the brackets 2 to enable the support platform 1 to move. The two hydraulic cylinders 3 are respectively installed at the left and right ends of the upper surface of the support platform 1. A lifting plate 4 is installed at the output end of the hydraulic cylinder 3. Two first electric slides 5 opposite to each other are installed on the lower surface of the lifting plate 4. A rotating mechanism 6 is installed at the center of the lower surface of the lifting plate 4. A welding mechanism 7 and a grinding mechanism 8 are respectively installed at the upper and lower ends of the right side wall of the rotating mechanism 6. The outer surface of the pipeline is ground by the grinding mechanism 8, and the pipeline is automatically welded by the welding mechanism 7. A clamping mechanism 9 is installed at the output end of the first electric slide 5, and the pipeline is clamped and fixed by the clamping mechanism 9. The rotating mechanism 6 includes a first support ring 61 installed at the center position of the lower surface of the lifting plate 4, a first outer gear ring 62 that can rotate is installed on the inner side of the first support ring 61, a first motor 63 is installed on the left side wall of the first support ring 61, and a first gear 64 meshingly connected to the first outer gear ring 62 is installed on the output end of the first motor 63. When the first motor 63 drives the first gear 64 to rotate, the first outer gear ring 62 can rotate clockwise and counterclockwise.

[0019] As a preferred solution, further, the welding mechanism 7 includes a second electric slide 71 installed on the top of the right side wall of the first outer gear ring 62, a mounting box 72 is installed at the output end of the second electric slide 71, a second motor 73 is installed at the left end of the upper surface of the mounting box 72, a shaft sleeve 74 is installed at the output end of the second motor 73, a plurality of rotating rods 75 are installed at equal intervals along the circumferential direction on the outer wall of the shaft sleeve 74, a socket 76 is provided on the outer side of the rotating rod 75, and the lengths of the rotating rods 75 on the shaft sleeve 74 are different. The rotating diameter of the connecting rod 78 is changed, and the left and right swinging amplitude of the shaking plate 77 is adjusted. A shaking plate 77 that can slide left and right is plugged into the right side wall of the mounting box 72, and one end of the connecting rod 78 is connected to the left side of the lower surface of the shaking plate 77 through a pin shaft, and a plug rod 79 is vertically plugged into the other end of the connecting rod 78. When the plug rod 79 is inserted into the socket 76, the rotating rod 75 is linked with the shaking plate 77. The top of the plug rod 79 is conical in shape, which is convenient for the plug rod 79 to be inserted into the sockets 76 at different positions. The inner cavity at the top of the plug rod 79 is respectively connected with the first spring 710 and the card ball 711 from the inside to the outside. Under the elastic force of the first spring 710, the card ball 711 is pushed to move outward. The card ball 711 is stuck on the upper surface of the rotating rod 75 to position the plug rod 79. A gun head 712 is vertically installed on the right side of the shaking plate 77. A short circuit occurs between the gun head 712 and the pipeline to generate high temperature. A machine base 713 is installed on the right end of the upper surface of the installation box 72. A third motor 714 is installed on the upper surface of the machine base 713. A mounting seat 715 is installed at the output end of the third motor 714. A welding wire coil is installed on the outer wall of the mounting seat 715. When the third motor 714 drives the welding wire coil to rotate, welding wire can be delivered to the gun head 712.

[0020] As a preferred solution, further, the grinding mechanism 8 includes a third electric slide 81 installed at the bottom of the right side wall of the first outer gear ring 62, and a support plate 82 is installed at the output end of the third electric slide 81. Slide rods 83 are inserted on the front and rear sides of the support plate 82, and a second spring 84 is sleeved on the outer wall of the slide rod 83. A processing component 85 is installed on the top of the slide rod 83. The processing component 85 is pushed upward by the elastic force of the second spring 84, so that the processing component 85 is always in contact with the surface of the pipeline.

[0021] As a preferred solution, further, the processing component 85 includes a gear box 851 installed on the top of the sliding rod 83, and a fourth motor 852 is installed on the left side of the gear box 851. A polishing roller 853 and a roller brush 854 are respectively installed on the front and rear sides of the right side wall of the gear box 851 through bearings, and the output end of the fourth motor 852 is connected to the polishing roller 853. The left ends of the polishing roller 853 and the roller brush 854 are both equipped with a second gear 855 that meshes with each other, so that the polishing roller 853 and the roller brush 854 rotate in opposite directions. The polishing roller 853 polishes the welding position on the outer surface of the pipeline, and the roller brush 854 cleans impurities on the surface of the pipeline to improve the strength of the welding.

[0022] As a preferred embodiment, further, the clamping mechanism 9 includes a second support ring 91 installed at the output end of the first electric slide 5, and three clamping plates 92 are equidistantly inserted on the outer side of the second support ring 91 along the circumferential direction. The three clamping plates 92 clamp the pipeline at three points to achieve centering of the pipeline. A number of tooth grooves 93 are equidistantly provided on the outer wall of the clamping plate 92. A rotatable turntable 94 is installed in the inner cavity of the second support ring 91, and a steel belt 95 and a second outer tooth ring 96 are installed on the left and right surfaces of the turntable 94, respectively, and the steel belt 95 is meshed and connected with the tooth groove 93. The steel belt 95 is spirally distributed on the outer wall of the turntable 94. When the turntable 94 drives the steel belt 95 to rotate clockwise or counterclockwise, the threaded rotation force of the steel belt 95 can squeeze the tooth groove 93 inward or outward, thereby realizing the inward or outward movement of the clamping plate 92. A fifth motor 97 is installed on the right side wall of the second support ring 91, and a third gear 98 meshed and connected with the second outer tooth ring 96 is installed at the output end of the fifth motor 97.

[0023] Working principle: Step 1: The clamping mechanism 9 is driven to move by the first electric slide 5, so that the second support ring 91 is put on the pipe, and the fifth motor 97 drives the third gear 98 to rotate. Under the transmission condition of the third gear 98 and the second outer gear ring 96, the steel belt 95 rotates clockwise, and the curved surface of the steel belt 95 squeezes the tooth groove 93 inwardly. The three clamping plates 92 move inward at the same time to implement centering clamping on the pipe. The first electric slide 5 is used to move the pipe. The position of the two pipe joints is between the welding mechanism 7 and the grinding mechanism 8, so as to realize the positioning of the pipe before welding. Step 2: The support plate 82 is driven to move by the third electric slide 81, and the elastic force of the second spring 84 causes the polishing roller 853 and the roller brush 854 to contact the outer surface of the pipe. At this time, the fourth motor 852 is started, and the polishing roller 853 and the roller brush 854 are driven by the two second gears 855 to rotate in the opposite direction at the same time; Step 3: The first motor 63 drives the first gear 64 to rotate. Under the transmission condition of the first gear 64 and the first outer gear ring 62, the polishing roller 853 and the roller brush 854 move around the pipe. The polishing roller 853 polishes the pipe, and then the roller brush 854 cleans the polishing position of the pipe to achieve pre-welding treatment. Step 4: The second electric slide 71 drives the installation box 72 to move, so that the gun head 712 is close to the welding position. The second motor 73 drives one end of the connecting rod 78 to make a circular motion through the rotating rod 75. The other end of the connecting rod 78 pulls the shaking plate 77 to swing left and right. The gun head 712 moves with the shaking plate 77. The third motor 714 drives the welding wire coil to rotate and feed the welding wire to the gun head 712. As the gun head 712 moves around the pipeline, the pipeline is welded. Step five, when it is necessary to adjust the welding width, pull down the rod 79 to move the rod 79 out of the socket 76, move the rod 79, and insert the rod 79 into the socket 76 on the rotating rod 75 of the required length. Under the elastic force of the first spring 710, the ball 711 is stuck on the upper surface of the rotating rod 75, and the rod 79 is positioned. The rotating rod 75 drives the connecting rod 78 to make a circular motion to change the diameter, thereby changing the swing distance of the shaking plate 77, thereby adjusting the welding width.

[0024] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for installing a thermal pipeline, comprising a support platform (1), two brackets (2) and two hydraulic cylinders (3), wherein the two brackets (2) are respectively fixedly connected to the front and rear ends of the lower surface of the support platform (1), and the bottom of the brackets (2) is provided with universal wheels to enable the support platform (1) to move. The two hydraulic cylinders (3) are respectively installed at the left and right ends of the upper surface of the support platform (1), characterized in that: The output end of the hydraulic cylinder (3) is equipped with a lifting plate (4), and the lower surface of the lifting plate (4) is equipped with two first electric slides (5) opposite to each other on the left and right. A rotating mechanism (6) is installed at the center of the lower surface of the lifting plate (4), and a welding mechanism (7) and a grinding mechanism (8) are respectively installed at the upper and lower ends of the right side wall of the rotating mechanism (6). The outer surface of the pipeline is ground by the grinding mechanism (8), and the pipeline is automatically welded by the welding mechanism (7). The output end of the first electric slide (5) is equipped with a clamping mechanism (9), and the pipeline is clamped and fixed by the clamping mechanism (9).

2. The installation device for a thermal pipeline according to claim 1, characterized in that: The rotating mechanism (6) comprises a first supporting ring (61) mounted at the center position of the lower surface of the lifting plate (4); a first outer toothed ring (62) capable of rotating is mounted inside the first supporting ring (61); a first motor (63) is mounted on the left side wall of the first supporting ring (61); a first gear (64) meshingly connected to the first outer toothed ring (62) is mounted at the output end of the first motor (63); when the first motor (63) drives the first gear (64) to rotate, the first outer toothed ring (62) can rotate clockwise and counterclockwise.

3. The installation device for a thermal pipeline according to claim 2, characterized in that: The welding mechanism (7) comprises a second electric slide (71) mounted on the top of the right side wall of the first outer gear ring (62); an installation box (72) is mounted on the output end of the second electric slide (71); a second motor (73) is mounted on the left end of the upper surface of the installation box (72); a shaft sleeve (74) is mounted on the output end of the second motor (73); a plurality of rotating rods (75) are mounted on the outer wall of the shaft sleeve (74) at equal intervals along the circumferential direction; a plug hole (76) is provided on the outer side of the rotating rod (75); a shaking plate (77) capable of sliding left and right is plugged into the right side wall of the installation box (72); one end of a connecting rod (78) is connected to the left side of the lower surface of the shaking plate (77) via a pin shaft; a plug rod (79) is vertically plugged into the other end of the connecting rod (78); when the plug rod (79) is inserted into the plug hole (76), the rotating rod (75) and the shaking plate (77) are connected to each other. The first spring (710) and the card ball (711) are respectively inserted into the inner cavity at the top of the plug rod (79) from the inside to the outside. The card ball (711) is pushed outward by the elastic force of the first spring (710). The card ball (711) is stuck on the upper surface of the rotating rod (75) to position the plug rod (79). A gun head (712) is vertically installed on the right side of the shaking plate (77). A short circuit occurs between the gun head (712) and the pipeline to generate high temperature. A base (713) is installed on the right end of the upper surface of the installation box (72). A third motor (714) is installed on the upper surface of the base (713). A mounting seat (715) is installed on the output end of the third motor (714). A welding wire coil is installed on the outer wall of the mounting seat (715). When the third motor (714) drives the welding wire coil to rotate, welding wire can be delivered to the gun head (712).

4. The installation device for a thermal pipeline according to claim 3, characterized in that: The lengths of the rotating rods (75) on the shaft sleeves (74) are different.

5. The installation device for a thermal pipeline according to claim 3, characterized in that: The top of the insertion rod (79) is in a conical shape.

6. The installation device for a thermal pipeline according to claim 3, characterized in that: The grinding mechanism (8) comprises a third electric slide (81) mounted at the bottom of the right side wall of the first outer gear ring (62); a support plate (82) is mounted at the output end of the third electric slide (81); slide bars (83) are inserted at both the front and rear sides of the support plate (82); a second spring (84) is sleeved on the outer wall of the slide bar (83); a processing assembly (85) is mounted on the top of the slide bar (83); and the processing assembly (85) is pushed upward by the elastic force of the second spring (84).

7. The installation device for a thermal pipeline according to claim 6, characterized in that: The processing assembly (85) comprises a gear box (851) mounted on the top of the slide bar (83), a fourth motor (852) being mounted on the left side of the gear box (851), a polishing roller (853) and a roller brush (854) being mounted on the front and rear sides of the right side wall of the gear box (851) via bearings, and an output end of the fourth motor (852) is connected to the polishing roller (853), and a second gear (855) meshing with each other is mounted on the left ends of the polishing roller (853) and the roller brush (854), so that the polishing roller (853) and the roller brush (854) rotate in opposite directions, the polishing roller (853) polishes the welding position on the outer surface of the pipeline, and the roller brush (854) cleans impurities on the surface of the pipeline, thereby improving the strength of the welding.

8. The installation device for a thermal pipeline according to claim 7, characterized in that: The clamping mechanism (9) comprises a second support ring (91) mounted on the output end of the first electric slide (5), three clamping plates (92) are inserted at equal intervals along the circumferential direction on the outer side of the second support ring (91), and a plurality of tooth grooves (93) are formed at equal intervals on the outer wall of the clamping plates (92). A rotatable turntable (94) is mounted in the inner cavity of the second support ring (91), and a steel belt (95) and a second outer tooth ring (96) are mounted on the left and right surfaces of the turntable (94), respectively, and the steel belt (95) is meshingly connected with the tooth grooves (93). A fifth motor (97) is mounted on the right side wall of the second support ring (91), and a third gear (98) meshingly connected with the second outer tooth ring (96) is mounted on the output end of the fifth motor (97).

9. The installation device for a thermal pipeline according to claim 8, characterized in that: The steel belt (95) is distributed in a spiral shape on the outer wall of the rotating disk (94).

10. A method for installing a thermal pipeline, which is applied to the installation device for a thermal pipeline as claimed in claim 8, characterized in that: The following steps are involved: Step 1: The clamping mechanism (9) is driven to move by the first electric slide (5), so that the second support ring (91) is sleeved on the pipe, and the fifth motor (97) drives the third gear (98) to rotate. Under the transmission condition of the third gear (98) and the second outer gear ring (96), the steel belt (95) rotates clockwise, and the curved surface of the steel belt (95) presses the tooth groove (93) inwardly. The three clamping plates (92) move inwardly at the same time to implement centering clamping on the pipe. The first electric slide (5) is used to move the pipe, and the joints of the two pipes are located between the welding mechanism (7) and the grinding mechanism (8), so that the pipes are positioned before welding. Step 2: The support plate (82) is driven to move by the third electric slide (81), and the elastic force of the second spring (84) causes the polishing roller (853) and the roller brush (854) to contact the outer surface of the pipe. At this time, the fourth motor (852) is started, and the polishing roller (853) and the roller brush (854) are simultaneously rotated in opposite directions under the transmission condition of the two second gears (855); Step 3: The first motor (63) drives the first gear (64) to rotate, and the polishing roller (853) and the roller brush (854) move around the pipe under the transmission condition of the first gear (64) and the first outer gear ring (62), the polishing roller (853) polishes the pipe, and then the roller brush (954) cleans the polishing position of the pipe, thereby achieving pre-welding treatment; Step 4: The installation box (72) is driven to move by the second electric slide (71), so that the gun head (712) is close to the welding position, the second motor (73) drives one end of the connecting rod (78) to make a circular motion through the rotating rod (75), and the other end of the connecting rod (78) pulls the shaking plate (77) to swing left and right, and the gun head (712) moves with the shaking plate (77), and the third motor (714) drives the welding wire coil to rotate and feed the welding wire to the gun head (712). As the gun head (712) moves around the pipeline, the pipeline is welded; Step 5, when it is necessary to adjust the welding width, pull down the insertion rod (79) to cause the insertion rod (79) to move out of the insertion hole (76), move the insertion rod (79), and insert the insertion rod (79) into the insertion hole (76) on the rotating rod (75) of the required length. Under the elastic force of the first spring (710), the card ball (711) is stuck on the upper surface of the rotating rod (75), and the insertion rod (79) is positioned. The rotating rod (75) drives the connecting rod (78) to make a circular motion to change the diameter, thereby changing the swing distance of the shaking plate (77), thereby adjusting the welding width.

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