Installation device and installation method for thermal pipeline

Abstract

The present invention relates to the field of heating technology, and in particular to an installation device and method for thermal pipelines, comprising a support platform, two brackets, and two hydraulic cylinders, wherein the two brackets are fixedly connected to the front and rear ends of the lower surface of the support platform, and universal wheels are provided at the bottom of the brackets to enable the support platform to move. The two hydraulic cylinders are respectively installed on the left and right ends of the upper surface of the support platform, and 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, and 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 device realizes pre-treatment of pipeline welding, makes welding more firm, prolongs service life, realizes automatic pipeline welding, and can adjust the welding width to meet various pipeline welding requirements and improve welding efficiency and welding quality.

Description

Technical Field

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

[0002] Heating, the supply of heat to buildings to maintain a constant indoor temperature, is a social service that addresses the basic winter heating needs of residents in northern my country. Heating relies on pipes to transport fluids, circulating hot water throughout the building to raise the indoor temperature.

[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, and welding is not firm, which can easily lead to leakage. When welders weld pipelines, they need to repeatedly adjust their positions because the pipelines are circular, and the welding will be interrupted. This is more difficult than straight-line welding, and the welding quality and efficiency are difficult to guarantee. For this reason, 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 present invention aims to solve the technical problem of providing 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: a device for installing a thermal pipeline, comprising a support platform, two brackets and two hydraulic cylinders, the two brackets being fixedly connected to the front and rear ends of the lower surface of the support platform respectively, and universal wheels being provided at the bottom of the brackets so that the support platform can move, the two hydraulic cylinders being respectively installed at the left and right ends of the upper surface of the support platform, a lifting plate being installed at the output end of the hydraulic cylinder, two first electric slides being installed on the lower surface of the lifting plate opposite to each other, a rotating mechanism being installed at the center position of the lower surface of the lifting plate, a welding mechanism and a grinding mechanism being respectively installed at the upper and lower ends of the right side wall of the rotating mechanism, the outer surface of the pipeline being ground by the grinding mechanism, and the pipeline being automatically welded by the welding mechanism, a clamping mechanism being installed at the output end of the first electric slide, and the pipeline being clamped and fixed by the clamping mechanism;

[0006] The rotating mechanism includes a first support ring mounted at the center of the lower surface of the lifting plate, a first outer gear ring capable of rotating is mounted on the inner side of the first support ring, a first motor is mounted on the left side wall of the first support ring, and a first gear meshing with the first outer gear ring is mounted on the output end of the first motor. When the first motor drives the first gear to rotate, the first outer gear ring can rotate clockwise and counterclockwise;

[0007] The welding mechanism and the grinding mechanism are moved around the pipeline through the first outer gear ring and the first gear.

[0008] Preferably, the welding mechanism includes 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 circumference, a socket is provided on the outer side of the rotating rod, a shaking plate that can slide left and right is connected to the right side wall of the mounting box, one end of the 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 connected to the other end of the connecting rod, and when the plug rod is inserted into the socket, it is realized The rotating rod is linked to the shaking plate, and the inner cavity at the top of the insertion rod is respectively connected 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 insertion rod. A gun head is vertically installed on the right side of the shaking plate. 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 welding wire coil is driven by the third motor to rotate, welding wire can be fed to the gun head;

[0009] By inserting the rod into the socket at different positions, the connecting rod rotation diameter is changed, and the left and right swing distance of the shaking plate is adjusted, thereby adjusting the welding width.

[0010] Preferably, the lengths of the rotating rods on the sleeves are different.

[0011] Preferably, the top of the insertion rod is conical in shape.

[0012] Preferably, the grinding mechanism includes 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, a slide rod is inserted on both the front and rear sides of the support plate, a second spring is sleeved on the outer wall of the slide rod, and a processing assembly is installed on the top of the slide rod, which pushes the processing assembly to move upward under the action of the elastic force of the second spring;

[0013] Under the push of the second spring, the processing component is always in contact with the pipeline surface, so that the pipeline is polished without dead angles.

[0014] 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.

[0015] Preferably, the clamping mechanism includes 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 meshed with the tooth groove, a fifth motor is installed on the right side wall of the second support ring, and a third gear meshed with the second outer tooth ring is installed on the output end of the fifth motor;

[0016] 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.

[0017] Preferably, the steel strips are distributed on the outer wall of the turntable in a spiral shape.

[0018] A method for installing a thermal pipeline installation device comprises the following steps:

[0019] Step 1: Use the first electric slide to drive the clamping mechanism to move, allowing the second support ring to be placed 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 position of the two pipe joints is between the welding mechanism and the grinding mechanism to achieve the positioning of the pipe before welding.

[0020] 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;

[0021] Step 3: The first motor drives the first gear to rotate. 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.

[0022] Step 4: The second electric slide drives the mounting box to move, bringing the gun head close to the welding position. The second motor drives one end of the connecting rod to make a circular motion through the rotating rod. 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 wire reel to rotate, feeding the welding wire to the gun head. As the gun head moves around the pipe, the pipe is welded.

[0023] Step 5. When the welding width needs to be adjusted, pull down the rod to move it out of the socket, move the rod, and insert it into the socket on the rotating rod of the required length. Under the action of the first spring force, the ball is stuck on the upper surface of the rotating rod, and the 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.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] 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;

[0026] 1. The present invention uses the elastic force of the second spring to push the gear box, 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, realizing the pre-treatment of the pipe welding, making the welding more solid and extending the service life;

[0027] 2. The present invention connects the connecting rod to the rotating rods of different lengths by inserting the insertion rod into the slots of 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 also be adjusted to meet various pipeline welding requirements and improve welding efficiency and welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the rotating mechanism structure;

[0030] Figure 3 It is the main cross-sectional view of the rotating mechanism;

[0031] Figure 4 It is a schematic diagram of the welding mechanism structure;

[0032] Figure 5 This is the main cross-sectional view of the welding mechanism;

[0033] Figure 6 for Figure 5 Enlarged view of point A in the middle;

[0034] Figure 7 This is the top view of the rotating rod;

[0035] Figure 8 Schematic diagram of the grinding mechanism structure;

[0036] Figure 9 A top-down cross-sectional view of the processing assembly;

[0037] Figure 10 Schematic diagram of the clamping mechanism structure;

[0038] Figure 11 It is the main cross-sectional view of the clamping mechanism;

[0039] Figure 12This is the left view of the turntable.

[0040] 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. Mounting box; 73. Second motor; 74. Bushing; 75. Rotating rod; 76. Socket; 77. Shaking plate; 78. Connecting rod; 79. Insertion 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

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0042] The present invention provides a technical solution: an installation device and an installation method for a thermal pipeline, such as Figures 1-12 As shown, it includes a supporting 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 supporting platform 1. A universal wheel is provided at the bottom of the bracket 2 to enable the supporting platform 1 to move. The two hydraulic cylinders 3 are respectively installed at the left and right ends of the upper surface of the supporting platform 1. A lifting plate 4 is installed at the output end of the hydraulic cylinder 3. Two left and right opposite first electric slides 5 are installed on the lower surface of the lifting plate 4. A rotating mechanism 6 is installed at the center position 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 welding mechanism 7 automatically welds the pipeline. 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;

[0043] 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 that is meshed and connected to the first outer gear ring 62 is installed at 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.

[0044] 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 on the outer wall of the shaft sleeve 74 at equal distances along the circumference, a socket 76 is provided on the outer side of the rotating rod 75, 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 swing amplitude of the shaking plate 77 is adjusted, a shaking plate 77 that can slide left and right is connected to 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 by a pin shaft, and a plug rod 79 is vertically inserted at the other end of the connecting rod 78. When the plug rod 79 is inserted into the socket 76, the rotating rod is realized. 75 is linked with the shaking plate 77. The top of the insertion rod 79 is conical, which is convenient for inserting the insertion rod 79 into the socket 76 at different positions. The inner cavity at the top of the insertion 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 insertion 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 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.

[0045] 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 pipe.

[0046] As a preferred solution, further, the processing component 85 includes a gear box 851 installed on the top of the slide rod 83, and a fourth motor 852 is installed on the left side of the gear box 851. The polishing roller 853 and the 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 pipe, and the roller brush 854 cleans impurities on the surface of the pipe to improve the strength of the weld.

[0047] As a preferred solution, further, the clamping mechanism 9 includes a second support ring 91 installed at the output end of the first electric slide 5, and three clamps 92 are equidistantly inserted on the outside of the second support ring 91 along the circumferential direction. The three clamps 92 clamp the pipe at three points to achieve centering of the pipe. A number of tooth grooves 93 are equidistantly provided on the outer wall of the clamp 92. A rotatable turntable 94 is installed in the inner cavity of the second support ring 91, and steel belts 95 and a second outer tooth ring 96 are installed on the left and right surfaces of the turntable 94 respectively, and the steel belts 95 are meshed with the tooth grooves 93. The steel belts 95 are 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 grooves 93 inward or outward, thereby realizing the inward or outward movement of the clamps 92. A fifth motor 97 is installed on the right side wall of the second support ring 91, and a third gear 98 meshed with the second outer tooth ring 96 is installed at the output end of the fifth motor 97.

[0048] Working principle:

[0049] Step 1: The clamping mechanism 9 is driven to move by the first electric slide 5, so that the second support ring 91 is placed on the pipe. 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. The curved surface of the steel belt 95 squeezes the tooth groove 93 inward. 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 to achieve the positioning of the pipe before welding.

[0050] Step 2: The support plate 82 is moved by the third electric slide 81. 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 rotate in opposite directions simultaneously under the transmission conditions of the two second gears 855.

[0051] 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.

[0052] Step 4: The second electric slide 71 drives the installation box 72 to move, allowing the gun head 712 to approach 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, feeding the welding wire to the gun head 712. As the gun head 712 moves around the pipe, the pipe is welded.

[0053] Step five, when the welding width needs to be adjusted, 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 and change the diameter, thereby changing the swing distance of the shaking plate 77, thereby adjusting the welding width.

[0054] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the 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 fixedly connected to the front and rear ends of the lower surface of the support platform (1), and a universal wheel is provided at the bottom of the bracket (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), and are characterized in that: The output end of the hydraulic cylinder (3) is equipped with a lifting plate (4), and two first electric slides (5) opposite to each other are equipped 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). The upper and lower ends of the right side wall of the rotating mechanism (6) are respectively equipped with a welding mechanism (7) and a grinding mechanism (8). 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); The rotating mechanism (6) comprises a first supporting ring (61) mounted at the center of the lower surface of the lifting plate (4); a first outer gear ring (62) capable of rotating is mounted on the inner side of 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 gear ring (62) is mounted 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 or counterclockwise; 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), an installation box (72) is installed on the output end of the second electric slide (71), a second motor (73) is installed on the left end of the upper surface of the installation box (72), a shaft sleeve (74) is installed on the output end of the second motor (73), a plurality of rotating rods (75) are installed on the outer wall of the shaft sleeve (74) at equal intervals along the circumferential direction, a socket (76) is provided on the outer side of the rotating rod (75), a shaking plate (77) capable of sliding left and right is inserted 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) through a pin shaft, and the other end of the connecting rod (78) is vertically inserted with an insertion rod (79), and when the insertion rod (79) is inserted into the socket (76), the rotating rod (75) and the shaking plate ( 77), the top inner cavity of the insertion rod (79) is respectively connected with a first spring (710) and a card ball (711) from the inside to the outside, and the card ball (711) is pushed to move outward under the elastic force of the first spring (710), and the card ball (711) is stuck on the upper surface of the rotating rod (75) to position the insertion rod (79). A gun head (712) is vertically installed on the right side of the shaking plate (77), and 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), and 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), and a welding wire coil is installed on the outer wall of the mounting seat (715). When the welding wire coil is driven by the third motor (714) to rotate, welding wire can be delivered to the gun head (712).

2. The installation device for a thermal pipeline according to claim 1, characterized in that: The lengths of the rotating rods (75) on the shaft sleeves (74) are different.

3. The installation device for a thermal pipeline according to claim 2, characterized in that: The top of the insertion rod (79) is in a conical shape.

4. The installation device for a thermal pipeline according to claim 3, characterized in that: 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), a support plate (82) is installed at the output end of the third electric slide (81), and slide rods (83) are inserted on both 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), and the processing component (85) is pushed upward by the elastic force of the second spring (84).

5. The installation device for a thermal pipeline according to claim 4, characterized in that: The processing assembly (85) includes a gear box (851) installed on the top of the slide bar (83), a fourth motor (852) is installed on the left side of the gear box (851), and 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), and the left ends of the polishing roller (853) and the roller brush (854) are both installed 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.

6. The installation device for a thermal pipeline according to claim 5, characterized in that: The clamping mechanism (9) includes a second support ring (91) installed at the output end of the first electric slide (5), three clamping plates (92) are equidistantly inserted on the outer side of the second support ring (91) along the circumferential direction, and a plurality of tooth grooves (93) are equidistantly opened 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), and the steel belt (95) is meshed with the tooth groove (93). A fifth motor (97) is installed on the right side wall of the second support ring (91), and a third gear (98) meshed with the second outer tooth ring (96) is installed on the output end of the fifth motor (97).

7. The installation device for a thermal pipeline according to claim 6, characterized in that: The steel belt (95) is distributed in a spiral shape on the outer wall of the turntable (94).

8. A method for installing a thermal pipeline, which is applied to the installation device for a thermal pipeline according to claim 7, 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 placed 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) inward. 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 that the pipe is 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 (854) cleans the polishing position of the pipe to achieve pre-welding treatment; Step 4: The second electric slide (71) drives the mounting 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 feeds the welding wire to the gun head (712). As the gun head (712) moves around the pipe, the pipe is welded. Step 5, when it is necessary to adjust the welding width, pull down the insertion rod (79) to move the insertion rod (79) out of the socket (76), move the insertion rod (79), and insert the insertion 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 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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