CN115041870A - Positioning welding equipment and process for supporting columns of suspended steel platforms - Google Patents

Abstract

The utility model relates to a suspend in midair steel platform support with fixed-position welding equipment and technology of stand, wherein main technical scheme is a fixed-position welding equipment, and it includes circular orbit, running gear, welder, power and auxiliary stand, and wherein the power is used for setting up on steel platform, the auxiliary stand is arranged in installing in the stand inner chamber, circular orbit is used for installing on the stand inner peripheral surface, running gear is along circular orbit around stand circumferential movement, welder locates on the running gear, welder be equipped with be used for with the electric wire that the power is connected, the auxiliary stand is used for suspending the electric wire in midair, just the auxiliary stand is equipped with the wire drive feed mechanism who is used for carrying the welding wire to welder. This application is through setting up running gear and welder to realize the automatic weld in narrow and small stand inner chamber.

Description

Positioning welding equipment and process for supporting columns of suspended steel platforms

technical field

The present application relates to the field of steel platform column construction, and in particular, to a positioning welding device and process for suspending a steel platform supporting column.

Background technique

As a steel structure building, the steel platform has the advantages of rapid construction, reduced environmental pollution, and high support strength, and is suitable for light rail transfer platforms, stair platforms and other bearing platforms.

The steel platform often needs supporting structures such as columns to be suspended in the air, and the existing column and the steel platform are fixed by manual welding.

In view of the above-mentioned related technologies, the inventor believes that when the column is arranged in a narrow space, it is difficult for the operator to be located near the to-be-connected place between the column and the steel platform. If welding is performed from the inner edge of the column, the inner cavity of the column will It is also relatively small, and it is difficult for operators to enter and perform welding, that is, in a small space, it is difficult to complete the welding and fixing between the column and the steel platform.

SUMMARY OF THE INVENTION

In order to facilitate the welding and fixing between the column and the steel platform in a narrow space, the present application provides a positioning welding device and process for a column for supporting a suspended steel platform.

The positioning welding equipment for a column for supporting a suspended steel platform provided by the application adopts the following technical solutions:

A positioning welding equipment for supporting a column for suspending a steel platform, comprising an annular track, a traveling mechanism, a welding torch, a power source and an auxiliary bracket, wherein the power source is used to be arranged on the steel platform, and the auxiliary bracket is used to be installed in the inner cavity of the column , the annular track is used to be installed on the inner peripheral surface of the column, the traveling mechanism moves around the circumferential direction of the column along the annular track, the welding torch is arranged on the traveling mechanism, and the welding torch is provided with a connection to the power supply The auxiliary support is used for suspending the electric wire, and the auxiliary support is provided with a wire feeding mechanism for feeding the welding wire to the welding gun.

By adopting the above technical solution, when in use, pre-install the annular track, traveling mechanism, welding torch, and auxiliary bracket in the inner cavity of the column, and ensure that the wire of the welding torch is located on the auxiliary bracket, and the power supply is pre-set on the steel platform; then hoisting Or pull up the column, make the column stand directly under the steel platform, and make sure that the upper end of the column is in contact with the lower surface of the steel platform; then pull the wire to the power supply, and then start the traveling mechanism and the welding torch, so that the welding torch runs along the column and the steel platform. The welding line between them is moved and welded until one circle is completed, so as to realize automatic welding in the narrow inner cavity of the column.

Optionally, the annular track includes an annular rack and an annular support plate, the rack is arranged on the inner wall of the column along the inner circumference of the column, the tooth slot of the rack is arranged inward, and the support plate is used to support the walking mechanism. The traveling mechanism includes a drive motor and a vertical plate, wherein the drive motor is installed on the vertical plate, the welding torch is connected with the vertical plate through a clamp, and the vertical output shaft of the drive motor is fixed with a first gear, the first The gear is engaged with the rack; the support plate is fixed with a vertical side plate, and the side plate abuts on the side of the vertical plate that is away from the rack.

By adopting the above technical solution, the walking mechanism is realized through the meshing of the first gear and the rack, and the supporting plate is provided to ensure the walking stability. After the welding is completed, the wire can be pulled up to detach the traveling mechanism from the annular track, and the traveling mechanism can be taken out through the gap of the steel structure on the steel platform, that is, the recovery of the traveling mechanism can be realized.

Optionally, the side plate is made of rubber.

By adopting the above technical solution, the side plate has a certain elasticity, so that the walking mechanism can be easily separated from the annular track.

Optionally, the center of the lower wheel surface of the first gear is provided with a first auxiliary ball, the lower end of the vertical plate is provided with a second auxiliary ball; The first rail groove of the auxiliary ball and the second rail groove for fitting the second auxiliary ball.

By adopting the above technical solution, the coordination between the auxiliary ball and the rail groove is arranged to improve the movement linearity of the traveling mechanism.

Optionally, the casing of the drive motor is fixed with a horizontally arranged first connecting plate, the vertical plate is fixed with a horizontally arranged second connecting plate, the first connecting plate, the clamp and the second connecting plate. The connection is performed by vertically arranged bolts; a linkage structure is provided on the vertical plate, and the linkage structure is used to transmit the reverse torque of the driving motor to the bolts; the first connection plate is provided with a first traction rope, The second connecting plate is provided with a second traction rope.

By adopting the above technical solution, after the welding is completed, the driving motor rotates in the reverse direction, and the linkage structure transmits the reverse torque of the driving motor to the bolt, so as to unlock the first connecting plate, the clamp and the second connecting plate at the same time, and then pull upwards in sequence. The first traction rope and the second traction rope are used to respectively take out the vertical plate and the driving motor from the inner cavity of the column and recover it.

That is to say, the traveling mechanism is divided into zero parts, so as to reduce the occurrence of the situation that the traveling mechanism is difficult to be taken out from the complicated steel structure gap due to the excessive volume of the traveling mechanism.

Optionally, the linkage structure includes a second gear, the vertical plate is provided with a vertically arranged rotating shaft, the second gear is sleeved on the rotating shaft, and a second gear is provided between the second gear and the rotating shaft. One-way bearing, the second gear meshes with the first gear, the upper wheel surface of the second gear is provided with an eccentric rod, the outer peripheral surface of the lower end of the bolt is provided with a vertically arranged chute, the The upper end of the eccentric rod is connected with the chute along the vertical sliding.

By adopting the above technical solution, when the output shaft of the driving motor rotates in the forward direction, the torque of the first gear is transmitted to the second gear and the first gear, and the second gear idles, and when the output shaft of the driving motor rotates in the reverse direction, The second gear transmits the torque of the driving motor to the rotating shaft, and through the cooperation of the eccentric rod and the chute, the bolts are loosened, thereby unlocking the first connecting plate, the clamp and the second connecting plate.

Optionally, a support cylinder is provided at the horizontal center of the auxiliary support, a rotating rod is rotatably connected in the support cylinder, the wire feeding mechanism and a vertical rod are arranged on the rotating rod, and the vertical rod is A supporting half-tube is arranged on the upper part, and the electric wire passes through the supporting half-tube.

By adopting the above technical solution, the wire feeding mechanism and the wire can be rotated, so that they can move according to the different positions of the traveling mechanism.

Optionally, the rotating rod includes two halves, a first half rod and a second half rod, the wire feeding mechanism is arranged on the first half rod, and the second half rod is connected to the vertical rod. rod connection.

By adopting the above technical solution, the wire feeding mechanism is taken away from the gap of the steel structure of the steel platform by pulling up the first half rod, that is, the wire feeding mechanism is first recovered, and then the second half rod is pulled upward for recycling. Come, break it into pieces, and the difficulty of recycling is greatly reduced.

Optionally, the second half rod is made of rubber material, the vertical rod is a telescopic rod, and the ends of the first traction rope and the second traction rope are both fixed to the upper end of the telescopic rod.

By adopting the above technical solution, when the first half-rod is taken out from the support cylinder, the second half-rod has a higher degree of freedom, and then the vertical rod is stretched so that the upper end of the vertical rod protrudes out of the steel structure gap and enters above the steel platform, During this period, the first connecting plate and the second connecting plate are disengaged from the annular track, and then the vertical rod is rotated, so that the vertical rod rotates eccentrically around the center line of the supporting cylinder (the second half rod is loose so that the vertical rod has an eccentric degree of freedom), The torque of eccentric rotation is large, which forces the first traction rope and the second traction rope to be quickly wound on the pole, and also makes the walking mechanism wrap around the pole. Take it out from the inner cavity of the column together, which is convenient and quick.

The application also provides a positioning welding process of a column for supporting a suspended steel platform, using the following technical solutions:

A positioning welding process for a supporting column for a suspended steel platform, comprising the following steps:

S1. Pre-install the annular track, traveling mechanism, welding torch, and auxiliary bracket in the inner cavity of the column, and ensure that the wire of the welding torch is located on the auxiliary bracket, and the power supply is pre-set on the steel platform;

S2. Hoist or lift the column, so that the column is erected directly below the steel platform, and ensure that the upper end of the column abuts on the lower surface of the steel platform;

S3. Pull the wire through the steel structure gap on the steel platform, so that the wire is connected to the power supply on the steel platform, and then start the welding torch and the drive motor. meshing, to drive the vertical plate to move along the length of the rack, so that the welding torch moves and welds along the welding line between the column and the steel platform until one circle of welding is completed;

S4. After the welding is completed, the driving motor rotates in the reverse direction, and the linkage structure transmits the reverse torque of the driving motor to the bolts to unlock the first connecting plate, the clamp and the second connecting plate at the same time, and then pulls the wire upward to remove the The fixture and welding torch are removed from the traveling mechanism, and taken to the steel platform through the gap of the steel structure on the steel platform, and then the first traction rope and the second traction rope are pulled upward in sequence to separate the vertical plate and the driving motor from the inner cavity of the column. taken out for reuse.

To sum up, the present application includes at least one of the following beneficial technical effects:

1. By setting the traveling mechanism and the welding torch, automatic welding can be realized in the narrow inner cavity of the column;

2. Through the detachable cooperation between the traveling mechanism and the annular track, when the welding is completed, the wire can be pulled up to detach the traveling mechanism from the annular track, and the traveling mechanism can be taken out through the steel structure gap on the steel platform , that is, to realize the recovery of the walking mechanism.

Description of drawings

FIG. 1 is a schematic diagram of the positioning welding equipment of this embodiment after installation.

FIG. 2 is a cross-sectional view of a column used for embodying the specific structure of the positioning welding device of the present embodiment.

FIG. 3 is a cross-sectional view of a column of this embodiment.

FIG. 4 is a partial enlarged view of A in FIG. 3 .

Description of reference numerals: 1. Ring track; 2. Running mechanism; 3. Welding torch; 4. Power source; 5. Auxiliary bracket; 10. Upright column; 11. Support plate; Slot; 12, rack; 13, side plate; 20, steel platform; 201, steel structure gap; 21, drive motor; 211, first connecting plate; 212, battery; 213, first traction rope; 214, second Traction rope; 22, vertical plate; 221, second connecting plate; 222, second auxiliary ball; 223, rotating shaft; 23, first gear; 231, first auxiliary ball; 241, bolt; 242, second gear; 243 , one-way bearing; 244, eccentric rod; 245, chute; 31, clamp; 41, electric wire; 51, supporting cylinder; 521, first half rod; 522, second half rod; 53, wire feeding mechanism; 54 , Pole; 55, supporting half cylinder.

Detailed ways

The present application will be further described in detail below in conjunction with accompanying drawings 1-4.

The embodiment of the present application discloses a positioning welding device for a supporting column for a suspended steel platform.

1 and 2, the positioning welding equipment for the supporting column of the suspended steel platform includes a circular track 1, a traveling mechanism 2, a welding torch 3, a power source 4 and an auxiliary bracket 5, wherein the power source 4 is placed on the steel platform 20, and the power source 4 uses For supplying power to the welding torch 3.

As shown in FIGS. 2 and 3 , the annular track 1 includes an annular rack 12 and an annular support plate 11 . The rack 12 is pasted on the inner wall of the column 10 along the inner peripheral surface of the column 10 . If the column 10 is circular, the teeth The circumferential direction of the bar 12 is circular, and the tooth slot of the rack 12 faces the center line of the column 10; the supporting plate 11 is arranged horizontally, the supporting plate 11 is fixed on the inner peripheral surface of the column 10, A rubber side plate 13 is provided along its circumferential direction, and a space for accommodating the running mechanism 2 is formed between the side plate 13 and the rack 12 .

As shown in FIG. 4 , the traveling mechanism 2 includes a driving motor 21 and a vertical plate 22 , wherein the driving motor 21 is arranged vertically, and the casing of the driving motor 21 is fixed with a horizontally arranged first connecting plate 211 , and the first connecting plate 211 is provided with The battery 212 for supplying power to the drive motor 21, the vertical plate 22 is fixed with a second connecting plate 221 arranged horizontally, the second connecting plate 221 and the first connecting plate 211 are stacked up and down, and the first connecting plate 211 and the second connecting plate 221 221 is connected by vertically arranged bolts 241, and at the same time, a clamp 31 is provided on the second connecting plate 221, and the clamp 31 is used to clamp the welding torch 3, so that the welding torch 3 is inclined upward, and the clamp 31 and the second connecting plate 221 also pass through. Bolts 241 are used for connection; at the same time, the welding torch 3 is provided with wires 41, which can pass through the steel structure gap 201 of the steel platform 20 to be connected to the power source 4, so as to realize the power supply of the power source 4 to the welding gun 3.

As shown in FIG. 4 , a first gear 23 is fixed to the output shaft of the driving motor 21 , and the first gear 23 meshes with the rack 12 , thereby realizing the movement of the traveling mechanism 2 along the length direction of the rack 12 ; The center of the lower wheel surface is provided with a first auxiliary ball 231, and the lower end of the vertical plate 22 is provided with a second auxiliary ball 222; the upper surface of the support plate 11 is provided with a first rail groove 111 and a second rail groove 112, The cooperation between the auxiliary ball 231 and the first rail groove 111 and the cooperation between the second auxiliary ball 222 and the second rail groove 112 make the traveling mechanism 2 more stable.

The vertical plate 22 is provided with a vertically arranged rotating shaft 223, a second gear 242 is sleeved on the rotating shaft 223, a one-way bearing 243 is arranged between the second gear 242 and the rotating shaft 223, and the second gear 242 meshes with the first gear 23; The upper wheel surface of the second gear 242 is provided with two vertically arranged eccentric rods 244 , and the outer peripheral surface of the lower end of the bolt 241 is provided with a vertically arranged chute 245 , and the upper end of the eccentric rod 244 slides with the chute 245 along the vertical direction. Move the connection.

As shown in FIG. 3 , the auxiliary bracket 5 is fixed in the inner cavity of the column 10 , and the auxiliary bracket 5 is provided with a wire feeding mechanism 53 for feeding welding wire to the welding torch 3 . The wire feeding mechanism 53 can be a structure composed of a motor and a roller frame , in order to realize the automatic feeding of the welding wire of the butt welding torch 3, specifically, the horizontal center of the auxiliary bracket 5 is provided with a vertical supporting cylinder 51, the lower end of the supporting cylinder 51 is closed, the upper end is open, and the supporting cylinder 51 is a steel platform Right below the steel structure gap 201 of 20, a rotating rod is rotatably connected in the support cylinder 51, and the rotating rod includes two half-set first half-rods 521 and second half-rods 522, wherein the wire feeding mechanism 53 is provided on the first half rod 521. On the half rod 521, the second half rod 522 is made of rubber material, the upper end of the second half rod 522 is provided with a vertical rod 54, the vertical rod 54 is a telescopic rod, the telescopic rod is magnetic, and the upper end of the telescopic rod is provided with a supporting half cylinder 55. The electric wire 41 passes through the supporting half cylinder 55, that is, the supporting half cylinder 55 can place the electric wire 41 near the steel structure gap 201, so that the operator can directly pull the electric wire 41 to complete the connection of the power source 4.

In addition, the first connecting plate 211 is provided with a first traction rope 213, the second connecting plate 221 is provided with a second traction rope 214, and the other ends of the first traction rope 213 and the second traction rope 214 are both fixed to the upper end of the telescopic rod.

The embodiment of the present application also discloses a column positioning welding process using the above positioning welding equipment, including the following steps:

S1. Pre-install the annular track 1, the traveling mechanism 2, the welding torch 3, and the auxiliary support 5 in the inner cavity of the column 10, and ensure that the wire 41 of the welding torch 3 is located in the supporting half cylinder 55; the steel platform 20 is supported by the temporary support , and then set the power source 4 on the steel platform 20 in advance.

S2, a pulling cylinder is arranged on the steel platform 20 to lift the column 10 upward, so that the column 10 is erected directly below the steel platform 20, and ensure that the upper end of the column 10 abuts on the lower surface of the steel platform 20, and at this time the support The half cylinder 55 extends into the gap 201 of the steel structure.

S3. The operator's hand passes through the steel structure gap 201 on the steel platform 20 to pull the wire 41 upward, so that the wire 41 is connected to the power supply 4 on the steel platform 20, and then starts the welding torch 3 and the drive motor 21, and the The output shaft rotates in the forward direction, through the meshing of the first gear 23 and the rack 12, to drive the vertical plate 22 to move along the length direction of the rack 12, so that the welding torch 3 moves and welds along the welding line between the vertical column 10 and the steel platform 20 , until the welding is completed.

S4. After the welding is completed, the driving motor 21 rotates in the reverse direction. When the output shaft of the driving motor 21 rotates in the reverse direction, the second gear 242 transmits the torque of the driving motor 21 to the rotating shaft 223. cooperate to loosen the bolts 241, thereby unlocking the first connecting plate 211, the clamp 31 and the second connecting plate 221, and then pulling the wire 41 upward to remove the clamp 31 and the welding gun 3 from the running mechanism 2, and the clamp 31 and the The welding torch 3 is taken to the steel platform 20 through the steel structure gap 201 on the steel platform 20 , that is, the recovery of the clamp 31 and the welding torch 3 is realized.

Then, use auxiliary tools such as hooks to fish out the wire feeding mechanism 53 and the first half rod 521 from the inner cavity of the column 10. At this time, only the second half rod 522 is located in the supporting cylinder 51, and the second half rod 522 has With a higher degree of freedom, the vertical rod 54 is then stretched, so that the upper end of the vertical rod 54 protrudes out of the steel structure gap 201 and enters above the steel platform 20. During this period, the upward movement of the vertical rod 54 drives the first connecting plate 211 and the second connecting plate 211 221 is disengaged from the annular track 1, and then the vertical rod 54 is rotated, so that the vertical rod 54 rotates eccentrically around the center line of the supporting cylinder 51 (the second half rod 522 is loosened so that the vertical rod 54 has an eccentric degree of freedom), and the eccentric rotation The torque is large, so that the first traction rope 213 and the second traction rope 214 are forced to be quickly wound on the vertical rod 54, and the walking mechanism 2 is also wound on the vertical rod 54, and then the vertical rod 54 is lifted up, and the vertical rod 54 can be easily , and the traveling mechanism 2 are taken out from the inner cavity of the upright column 10 together for reuse.

The implementation principle of the embodiment of the present application is as follows: firstly, the automatic welding in the inner cavity of the narrow column 10 is realized by automatic welding, which is convenient and fast; then, various detachable connections are provided to make the whole into parts, and cooperate with each other. The constricting effect of the vertical rod 54 reduces the volume of the traveling mechanism 2 and collects them together to effectively reduce the cost.

The above are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore: all equivalent changes made according to the structure, shape and principle of the present application should be covered within the scope of the present application. Inside.

Claims (10)

1. The positioning welding equipment of a column for supporting a suspended steel platform is characterized in that: comprising an annular track (1), a traveling mechanism (2), a welding torch (3), a power source (4) and an auxiliary support (5), wherein The power supply (4) is used to be arranged on the steel platform (20), the auxiliary bracket (5) is used to be installed in the inner cavity of the column (10), and the annular track (1) is used to be installed in the column (10) On the peripheral surface, the traveling mechanism (2) moves circumferentially around the column (10) along the annular track (1), the welding torch (3) is arranged on the traveling mechanism (2), and the welding torch (3) is provided with There is a wire (41) for connecting with the power source (4), the auxiliary bracket (5) is used for suspending the wire (41), and the auxiliary bracket (5) is provided with a wire for feeding the welding gun (3) The wire feed mechanism (53). 2 . The positioning welding equipment for supporting columns for suspended steel platforms according to claim 1 , wherein the annular track ( 1 ) comprises an annular rack ( 12 ) and an annular support plate ( 11 ). The rack (12) is arranged on the inner wall of the column (10) along the inner circumference of the column (10), the tooth slot of the rack (12) is arranged inward, and the support plate (11) is used to support the traveling mechanism (2); The traveling mechanism (2) includes a drive motor (21) and a vertical plate (22), wherein the drive motor (21) is mounted on the vertical plate (22), and the welding torch (3) is connected to the vertical plate through a clamp (31). (22) connection, the vertical output shaft of the drive motor (21) is fixed with a first gear (23), and the first gear (23) meshes with the rack (12); the support plate (11) is fixed with a A vertical side plate (13), the side plate (13) abuts on the side surface of the vertical plate (22) facing away from the rack (12). 3 . The positioning welding equipment for a column for supporting a suspended steel platform according to claim 2 , wherein the side plate ( 13 ) is made of rubber. 4 . 4. The positioning welding equipment for a column for supporting a suspended steel platform according to claim 3, wherein the center of the lower wheel surface of the first gear (23) is provided with a first auxiliary ball (231), so The lower end of the vertical plate (22) is provided with second auxiliary balls (222); the upper surface of the support plate (11) is provided with first rail grooves (111) and The second rail groove (112) for fitting the second auxiliary ball (222). 5 . The positioning welding equipment for supporting a column for a suspended steel platform according to claim 3 , wherein the casing of the driving motor ( 21 ) is fixed with a horizontally arranged first connecting plate ( 211 ), and the The vertical plate (22) is fixed with a horizontally arranged second connecting plate (221), and the first connecting plate (211), the clamp (31) and the second connecting plate (221) pass through vertically arranged bolts (241) ) to connect; the vertical plate (22) is provided with a linkage structure, and the linkage structure is used to transmit the reverse torque of the driving motor (21) to the bolt (241); the first connecting plate (211) A first traction rope (213) is provided, and a second traction rope (214) is provided on the second connecting plate (221). 6 . The positioning welding equipment for a column for supporting a suspended steel platform according to claim 5 , wherein the linkage structure comprises a second gear ( 242 ), and the vertical plate ( 22 ) is provided with a vertically arranged A rotating shaft (223), a second gear (242) is sleeved on the rotating shaft (223), and a one-way bearing (243) is arranged between the second gear (242) and the rotating shaft (223), so The second gear (242) meshes with the first gear (23), the upper wheel surface of the second gear (242) is provided with an eccentric rod (244), and the outer peripheral surface of the lower end of the bolt (241) is provided with an eccentric rod (244). There is a vertically arranged chute (245), and the upper end of the eccentric rod (244) is connected with the chute (245) by sliding in the vertical direction. 7 . The positioning welding equipment for a column for supporting a suspended steel platform according to claim 5 , wherein a support cylinder ( 51 ) is provided at the horizontal center of the auxiliary support ( 5 ), and the support cylinder (51) A rotating rod is rotatably connected inside the rotating rod, the wire feeding mechanism (53) and the vertical rod (54) are arranged on the rotating rod, and the supporting half cylinder (55) is arranged on the vertical rod (54), The electric wire (41) passes through the supporting half-tube (55). 8 . The positioning welding equipment for a column for supporting a suspended steel platform according to claim 7 , wherein the rotating rod comprises two first half rods ( 521 ) and second half rods ( 522 ) arranged in half. 9 . ), the wire feeding mechanism (53) is arranged on the first half rod (521), and the second half rod (522) is connected with the vertical rod (54). 9 . The positioning welding equipment for a column for supporting a suspended steel platform according to claim 8 , wherein the second half rod ( 522 ) is made of rubber material, and the vertical rod ( 54 ) is a telescopic rod, so the The ends of the first traction rope (213) and the second traction rope (214) are both fixed to the upper end of the telescopic rod. 10. A positioning welding process for a column (10) for supporting a suspended steel platform (20), using the positioning welding equipment for a column (10) for supporting a suspended steel platform according to any one of claims 5-9, characterized in that : includes the following steps: S1. Pre-install the annular track (1), the traveling mechanism (2), the welding torch (3), and the auxiliary bracket (5) in the inner cavity of the column (10), and ensure that the wire (41) of the welding torch (3) is in the auxiliary position on the bracket (5), and the power supply (4) is pre-arranged on the steel platform (20); S2, hoisting or pulling the column (10), so that the column (10) is erected directly below the steel platform (20), and ensure that the upper end of the column (10) abuts against the lower surface of the steel platform (20); S3. Pull the wire (41) through the steel structure gap (201) on the steel platform (20), so that the wire (41) is connected to the power supply (4) on the steel platform (20), and then start the welding torch (3) and The drive motor (21) is driven, and the output shaft of the drive motor (21) rotates in the forward direction, and the first gear (23) is engaged with the rack (12) to drive the vertical plate (22) along the length of the rack (12). moving in the direction, so that the welding torch (3) moves and welds along the welding line between the column (10) and the steel platform (20) until one circle of welding is completed; S4. After the welding is completed, the driving motor (21) rotates in the reverse direction, and the linkage structure transmits the reverse torque of the driving motor (21) to the bolt (241), so as to unlock the first connecting plate (211) and the clamp at the same time (31) and the second connecting plate (221), then pull the wire (41) upwards to remove the clamp (31) and welding torch (3) from the running gear (2) and pass the steel structure on the steel platform (20) The gap (201) is taken to the steel platform (20), and then the first traction rope (213) and the second traction rope (214) are pulled upward in sequence, so as to separate the vertical plate (22) and the driving motor (21) from the vertical column (213). 10) Take it out from the inner cavity for reuse.

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