Seamless welding device and method for building technology

Abstract

The invention relates to the field of welding devices, discloses a seamless welding device and method for a building technology, and solves the problem that relative displacement may occur between steel pipes and a clamping piece when two steel pipes are close to each other and are pressed at present, a workbench is arranged, a welding mechanism and a steel pipe fixing mechanism are arranged at the top end of the workbench, and the welding mechanism and the steel pipe fixing mechanism are arranged on the workbench. The steel pipe fixing mechanism comprises a main fixing piece arranged in the middle of the top end of the workbench and auxiliary fixing pieces symmetrically arranged on the two sides of the main fixing piece, the main fixing piece and the auxiliary fixing pieces each comprise a mounting cylinder, and rotating driving pieces used for conducting centering clamping and rotating welding on a steel pipe are arranged on the outer sides of the mounting cylinders. Steel pipes are installed in the corresponding installation cylinders to achieve centering clamping and fixing, the ends, away from each other, of the steel pipes at the two ends are limited through the end limiting mechanisms, and relative displacement between the steel pipes and the clamping pieces is avoided; the welding stability is improved.

Description

Technical Field

[0001] The invention belongs to the field of welding devices, in particular to a seamless welding device and a method for building technology. Background Art

[0002] In the continuous development of the construction industry, the complexity and functional requirements of building structures are increasing. For many building metal components, such as steel beams, aluminum alloy door and window frames, etc., the quality of their connection is directly related to the overall safety, stability and aesthetics of the building. Traditional welding technologies, such as manual arc welding, gas shielded welding, etc., in the construction industry, in many cases, multiple steel pipes need to be welded, and for the sake of aesthetics, seamless welding is required. When performing seamless welding, the steel pipe is generally required to be clamped horizontally by a clamp, and the steel pipe needs to be set in the center, and then the two clamps are close to each other, so that the two clamps drive the contact surfaces of the two adjacent steel pipes to be pressed, so as to perform seamless welding, but there are still the following defects: When the clamp drives the two steel pipes to approach each other and press them tightly, the two steel pipes are prone to relative displacement between the steel pipes and the clamp under the mutual force, which in turn causes the welding stability to decrease and affects the quality of seamless welding. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a seamless welding device and method of construction technology, which effectively solves the problem that relative displacement may occur between the steel pipes and the clamping parts when two steel pipes are close to each other and pressed.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a construction technology seamless welding device and method thereof, comprising a workbench, the top of which is provided with a welding mechanism and a steel pipe fixing mechanism; The steel pipe fixing mechanism includes a main fixing member arranged in the middle of the top of the workbench and auxiliary fixing members symmetrically arranged on both sides of the main fixing member. Both the main fixing member and the auxiliary fixing member include a mounting tube. A rotating driving member for centering and clamping the steel pipe and rotating welding is arranged on the outer side of the mounting tube. An end limit mechanism is arranged at one end of the mounting tube on the auxiliary fixing member away from the main fixing member. The end limit mechanism comprises an end plate arranged on the end of the mounting tube on the secondary fixing member away from the main fixing member, a connecting groove is opened in the middle of the end plate, a movable pressing member for pressurizing the steel pipe is arranged on the end plate, an air intake protection member for driving pressurization can be installed on the end plate, and a clamping fixing member for fixing the air intake protection member is arranged on the end plate; The movable clamping member includes two semi-annular grooves symmetrically opened on the end plate, the semi-annular grooves are arranged in a semi-ring shape, a semi-annular plate is movably installed inside the semi-annular groove, the outer wall of the semi-annular plate is in close contact with the inner wall of the semi-annular groove, and a limiting groove is opened on the side of the two semi-annular grooves away from each other, a limiting block is installed on the semi-annular plate, the limiting block is slidably installed inside the limiting groove, and a first spring is symmetrically installed on both sides of the limiting block, and the end of the first spring is fixedly connected to the inner wall of the limiting groove, a limiting swivel is installed on one side of the end plate, and the limiting swivel is rotatably installed inside the limiting ring groove, and the limiting ring groove is opened at the end of the mounting tube.

[0005] Preferably, the air intake protection component includes a mounting cover installed on one side of the end plate, the end of the mounting cover is in close contact with the surface of the end plate and the surface of the semi-ring plate, and the outer diameter of the mounting cover is smaller than the outer diameter of the semi-ring plate, a connecting pipe is installed at one end of the mounting cover, a valve is installed on the connecting pipe, side blocks are symmetrically installed on both sides of the mounting cover, a slot is opened at the end of the side block, and a positioning block is installed on the side of the side block close to the end plate.

[0006] Preferably, a connecting cavity is provided at an equal angle inside the mounting cover, an end groove is provided at one end of the connecting cavity close to the end plate, a piston is movably installed inside the connecting cavity, a pressure rod is installed on the side of the piston close to the end groove, the end of the pressure rod contacts the surface of the semi-ring plate, a second spring is installed on the side of the piston close to the end plate, the end of the second spring is fixedly connected to the end inner wall of the connecting cavity, a side groove is provided at the end of the connecting cavity away from the end groove, and the side groove is connected with the inner cavity of the mounting cover.

[0007] Preferably, the clamping fixing member includes a movable groove symmetrically opened on the end plate, side grooves are symmetrically opened on both sides of the movable groove, a movable block is slidably installed inside the movable groove, clamping blocks are symmetrically installed on both sides of the movable block, a third spring is installed on the side of the movable block away from the connecting groove, one end of the third spring is fixedly connected to the end inner wall of the movable groove, a pull rod is installed on one side of the movable block, the pull rod extends to the outer side of the end plate, and positioning grooves are symmetrically opened on both sides of the end plate.

[0008] Preferably, the rotating driving member includes two rotating frames, the mounting cylinder is rotatably mounted on the rotating frames, a first gear ring is mounted on the outer wall of the mounting cylinder, a first gear is meshingly connected below the first gear ring, the first gear is fixedly connected to the output shaft of the first motor, a bottom seat is provided below the mounting cylinder, the rotating frame and the first motor are both mounted on the bottom seat, the bottom seat on the main fixing member is fixed on the workbench, a rotating adjusting member is provided below the bottom seat on the secondary fixing member, and a centering clamp is installed on the mounting cylinder.

[0009] Preferably, the centering clamping member includes a clamping plate arranged at an equiangular angle on the inner side of the mounting tube, a connecting frame is installed on the clamping plate, the connecting frame is slidably connected to the mounting tube, a connecting block is installed on the end of the connecting frame, two movable rings are coaxially arranged on the outer side of the mounting tube, the two movable rings are symmetrically arranged on both sides of the connecting block, connecting rods are symmetrically hingedly installed at both ends of the connecting block, and the ends of the connecting rods are hinged to the movable rings, a sliding frame is installed on the bottom seat, two sliding limit plates are slidably installed on the sliding frame, the two sliding limit plates are respectively in contact with the two movable rings on one side away from each other, a double-headed screw is rotatably installed on the inner wall of the sliding frame, the two sliding limit plates are respectively threadedly connected to two thread grooves on the double-headed screw with opposite directions, one end of the double-headed screw is fixedly connected to the output shaft of the second motor, and the second motor is fixedly installed on the sliding frame.

[0010] Preferably, the rotation adjustment member includes a sliding seat arranged below the bottom seat on the auxiliary fixing member, a rotating shaft is rotatably installed on the top of the sliding seat, the rotating shaft is fixedly connected to the bottom seat, a second gear ring is installed on the rotating shaft, a second gear is meshingly connected to one side of the second gear ring, the second gear is fixedly connected to the output shaft of the third motor, the third motor is fixedly installed on the sliding seat, a second lateral moving module for driving the sliding seat to move is arranged between the sliding seat and the workbench, and the second lateral moving module is symmetrically arranged on the workbench.

[0011] Preferably, the welding mechanism includes a welding base symmetrically arranged on the workbench, a mounting platform is arranged above the welding base, a welding gun is installed on the top of the mounting platform, a first lateral moving module is arranged between the welding base and the workbench, the first lateral moving module is symmetrically arranged on the workbench, a distance adjustment module is arranged between the welding base and the mounting platform, and the welding height of the welding gun is the same as the height of the central axis of the mounting cylinder.

[0012] The present invention also provides a welding method for a seamless welding device of construction technology, comprising the following steps: S1. Steel pipe installation: install the main steel pipe in the installation tube on the main fixing part, and install the auxiliary steel pipe in the installation tube on the auxiliary fixing part; S2, limiting and pressing: the long tube composed of multiple steel tubes is limited and pressed by the end plates at the ends of the mounting tubes of the two auxiliary fixing parts, and the inner cavity of the long tube is connected with the connecting groove; S3. Ventilation: install the mounting cover on the side of the end plate away from the steel pipe, connect one of the connecting pipes to the inert gas storage box, ventilate the inner cavity of the long pipe and exhaust the air; S4, welding: move the welding gun to the position where two adjacent steel pipes need to be seamlessly welded, and turn on the first motor on the mounting cylinder where the steel pipes are mounted, so that the steel pipes rotate synchronously, and perform welding through the welding gun.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention can coaxially fix the steel pipe inside the mounting tube, and make one end of the auxiliary steel pipe close to the end plate at one end of the mounting tube. At the same time, the mounting tube on the auxiliary fixing member can rotate, so that the position of the end plate on the mounting tube can be adjusted, so that the end plates on the two mounting tubes can press and limit the two ends of the long tube composed of two or three steel pipes, thereby preventing the steel pipe and the clamping member from moving relative to each other, and improving the stability of seamless welding; (2) The invention installs clamping blocks on both sides of the moving block, so that the installation cover can be installed on both sides of the end plate. After the installation cover is installed on the side of the end plate away from the main steel pipe, the inner cavity of the installation cover is connected with the connecting groove, and the connecting groove is connected with the inner cavity of the long tube composed of multiple steel pipes, so that the inner cavity of the long tube is connected with the inner cavities of the two installation covers, which is convenient for introducing inert gas into the long tube and exhausting air, thereby protecting the steel pipe welding; (3) When the two valves of the invention are opened, inert gas can be introduced and air can be discharged. When the valve at one end for discharging air is closed, the air pressure in the inner cavity of the two mounting covers increases continuously, exerting pressure on the piston, so that the end of the pressure rod exerts pressure on the semi-ring plate toward the main steel pipe side, further compressing the multiple steel pipes, improving the welding stability, and at the same time, the compression strength can be adjusted by the amount of inert gas introduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0015] In the attached picture: Figure 1 This is a schematic diagram of the structure of the seamless welding device of the building technology of the present invention; Figure 2 This is a schematic diagram of the structure of the steel pipe fixing mechanism of the present invention; Figure 3 This is a schematic diagram of the centering clamp structure of the present invention; Figure 4 This is a schematic diagram of the structure of the rotary adjustment member of the present invention; Figure 5 It is a schematic diagram of the structure of the end limit mechanism of the present invention; Figure 6 It is a schematic diagram of the structure of the movable pressing member of the present invention; Figure 7 This is a schematic diagram of the structure of the clamping fixing member of the present invention; Figure 8 This is a schematic diagram of the structure of the air intake protection member of the present invention; Fig. 9 This is a schematic diagram of the internal structure of the mounting cover of the present invention; In the figure: 1, workbench; 2, welding mechanism; 201, welding base; 202, mounting platform; 203, welding gun; 204, first transverse moving module; 205, distance adjustment module; 3, steel pipe fixing mechanism; 3a, main fixing member; 3b, auxiliary fixing member; 301, second transverse moving module; 302, mounting cylinder; 303, bottom seat; 304, rotating frame; 305, first gear ring; 306, first gear; 307 , first motor; 308, centering clamp; 3081, clamping plate; 3082, connecting frame; 3083, connecting block; 3084, moving ring; 3085, connecting rod; 3086, sliding frame; 3087, sliding limit plate; 3088, double-headed screw; 3089, second motor; 309, rotating adjustment member; 3091, sliding seat; 3092, rotating shaft; 3093, second gear ring; 3094, second gear; 3 095, third motor; 4, end limit mechanism; 401, end plate; 402, limit ring groove; 403, limit swivel; 404, connecting groove; 405, movable pressing member; 4051, semi-ring groove; 4052, semi-ring plate; 4053, limit groove; 4054, limit block; 4055, first spring; 406, air intake protection member; 4061, mounting cover; 4062, connecting pipe; 4063, valve; 4064 , side block; 4065, positioning block; 4066, card slot; 4067, connecting cavity; 4068, end slot; 4069, side slot; 40610, piston; 40611, pressure rod; 40612, second spring; 407, clamping fixture; 4071, positioning slot; 4072, moving slot; 4073, side slot; 4074, moving block; 4075, card block; 4076, pull rod; 4077, third spring. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0017] Embodiment 1, by Figure 1-Figure 9 The present invention relates to a seamless welding device and method for construction technology, comprising a workbench 1, a welding mechanism 2 and a steel pipe fixing mechanism 3 are arranged on the top of the workbench 1; The steel pipe fixing mechanism 3 includes a main fixing member 3a arranged at the middle of the top of the workbench 1 and auxiliary fixing members 3b symmetrically arranged on both sides of the main fixing member 3a. The main fixing member 3a and the auxiliary fixing member 3b both include a mounting tube 302. A rotating driving member for centering and clamping the steel pipe and rotating welding is arranged on the outer side of the mounting tube 302. An end limit mechanism 4 is arranged on the end of the mounting tube 302 on the auxiliary fixing member 3b away from the main fixing member 3a. The end limiting mechanism 4 includes an end plate 401 arranged on the end of the mounting tube 302 on the auxiliary fixing part 3b away from the main fixing part 3a. The steel pipe can be coaxially fixed inside the mounting tube 302, and one end of the auxiliary steel pipe is tightly attached to the end plate 401 at one end of the mounting tube 302. At the same time, the mounting tube 302 on the auxiliary fixing part 3b can be rotated, so that the position of the end plate 401 on the mounting tube 302 can be adjusted, so that the end plates 401 on the two mounting tubes 302 can press and limit the two ends of the long tube composed of two or three steel tubes, thereby improving the non-returnability. To ensure the stability of seam welding, a connecting groove 404 is provided in the middle of the end plate 401, a movable clamping part 405 for pressurizing the steel pipe is provided on the end plate 401, an air intake protection part 406 for driving pressurization can be installed on the end plate 401, a clamping fixing part 407 for fixing the air intake protection part 406 is provided on the end plate 401, a limiting swivel 403 is installed on one side of the end plate 401, the limiting swivel 403 is rotatably installed in the limiting ring groove 402, and the limiting ring groove 402 is provided at the end of the mounting tube 302.

[0018] The movable clamping member 405 includes two semi-annular grooves 4051 symmetrically opened on the end plate 401, the semi-annular grooves 4051 are arranged in a semi-ring shape, and a semi-annular plate 4052 is movably installed inside the semi-annular grooves 4051, and the outer wall of the semi-annular plate 4052 is in close contact with the inner wall of the semi-annular grooves 4051, and a limiting groove 4053 is opened on the side of the two semi-annular grooves 4051 away from each other, and a limiting block 4054 is installed on the semi-annular plate 4052, and the limiting block 4054 is slidably installed inside the limiting groove 4053, and first springs 4055 are symmetrically installed on both sides of the limiting block 4054, and the end of the first spring 4055 is fixedly connected to the inner wall of the limiting groove 4053.

[0019] The air intake protection member 406 includes a mounting cover 4061 mounted on one side of the end plate 401, the end of the mounting cover 4061 is in close contact with the surface of the end plate 401 and the surface of the semi-ring plate 4052, and the outer diameter of the mounting cover 4061 is smaller than the outer diameter of the semi-ring plate 4052, a connecting pipe 4062 is mounted on one end of the mounting cover 4061, a valve 4063 is mounted on the connecting pipe 4062, side blocks 4064 are symmetrically mounted on both sides of the mounting cover 4061, a card groove 4066 is provided at the end of the side block 4064, a positioning block 4065 is installed on the side of the side block 4064 close to the end plate 401, a connecting cavity 4067 is equiangularly formed inside the mounting cover 4061, an end groove 4068 is formed at one end of the connecting cavity 4067 close to the end plate 401, a piston 40610 is movably mounted inside the connecting cavity 4067, and a pressure relief valve is installed on the side of the piston 40610 close to the end groove 4068 Rod 40611, the end of the pressure rod 40611 contacts the surface of the semi-ring plate 4052, and a second spring 40612 is installed on the side of the piston 40610 close to the end plate 401, and the end of the second spring 40612 is fixedly connected to the end inner wall of the connecting chamber 4067, and a side groove 4069 is opened at the end of the connecting chamber 4067 away from the end groove 4068, and the side groove 4069 is connected with the inner cavity of the installation cover 4061. When the two valves 4063 are opened, inert gas can be introduced and air can be discharged. When the valve 4063 at one end that discharges air is closed, the air pressure in the inner cavity of the two installation covers 4061 continues to increase, which generates pressure on the piston 40610, so that the end of the pressure rod 40611 generates pressure toward the main steel pipe side on the semi-ring plate 4052, further compressing the multiple steel pipes, improving the welding stability, and at the same time, the compression strength can be adjusted by the amount of inert gas introduced.

[0020] The clamping fixture 407 includes a moving groove 4072 symmetrically opened on the end plate 401, and side grooves 4073 are symmetrically opened on both sides of the moving groove 4072. A moving block 4074 is slidably installed inside the moving groove 4072, and clamping blocks 4075 are symmetrically installed on both sides of the moving block 4074. A third spring 4077 is installed on the side of the moving block 4074 away from the connecting groove 404, and one end of the third spring 4077 is fixedly connected to the inner wall of the end of the moving groove 4072. A pull rod 4076 is installed on one side of the moving block 4074, and the pull rod 4076 penetrates to the end plate 401. 01, positioning grooves 4071 are symmetrically provided on both sides of the end plate 401, and clamping blocks 4075 are installed on both sides of the moving block 4074, so that the mounting cover 4061 can be installed on both sides of the end plate 401. After the mounting cover 4061 is installed on the side of the end plate 401 away from the main steel pipe, the inner cavity of the mounting cover 4061 is connected with the connecting groove 404, and the connecting groove 404 is connected with the inner cavity of the long tube composed of multiple steel pipes, so that the inner cavity of the long tube is connected with the inner cavities of the two mounting covers 4061, which is convenient for introducing inert gas into the inside of the long tube and exhausting air, so as to protect the steel pipe welding.

[0021] The rotating driving member includes two rotating frames 304, and the mounting cylinder 302 is rotatably mounted on the rotating frames 304. A first gear ring 305 is mounted on the outer wall of the mounting cylinder 302. A first gear 306 is meshed and connected below the first gear ring 305. The first gear 306 is fixedly connected to the output shaft of the first motor 307. A bottom seat 303 is arranged below the mounting cylinder 302. The rotating frame 304 and the first motor 307 are both mounted on the bottom seat 303. The bottom seat 303 on the main fixing member 3a is fixed on the workbench 1. A rotating adjusting member 309 is arranged below the bottom seat 303 on the secondary fixing member 3b. A centering clamp 308 is installed on the mounting cylinder 302.

[0022] The centering clamp 308 includes a clamping plate 3081 which is arranged at an equal angle on the inner side of the mounting cylinder 302, a connecting frame 3082 is installed on the clamping plate 3081, the connecting frame 3082 is slidably connected to the mounting cylinder 302, a connecting block 3083 is installed at the end of the connecting frame 3082, two moving rings 3084 are coaxially arranged on the outer side of the mounting cylinder 302, the two moving rings 3084 are symmetrically arranged on both sides of the connecting block 3083, and connecting rods 3085 are symmetrically hingedly installed at both ends of the connecting block 3083, and the ends of the connecting rods 3085 are hinged to the moving rings 3084, and the bottom seat A sliding frame 3086 is installed on 303, and two sliding limit plates 3087 are slidably installed on the sliding frame 3086. The two sliding limit plates 3087 are respectively in contact with the two moving rings 3084 on one side away from each other. A double-headed screw 3088 is rotatably installed on the inner wall of the sliding frame 3086. The two sliding limit plates 3087 are respectively threadedly connected with two thread grooves on the double-headed screw 3088 with opposite directions. One end of the double-headed screw 3088 is fixedly connected to the output shaft of the second motor 3089, and the second motor 3089 is fixedly installed on the sliding frame 3086.

[0023] The rotating adjustment member 309 includes a sliding seat 3091 arranged below the bottom seat 303 on the auxiliary fixing member 3b, a rotating shaft 3092 is rotatably installed on the top of the sliding seat 3091, the rotating shaft 3092 is fixedly connected to the bottom seat 303, a second gear ring 3093 is installed on the rotating shaft 3092, a second gear 3094 is meshingly connected to one side of the second gear ring 3093, the second gear 3094 is fixedly connected to the output shaft of the third motor 3095, the third motor 3095 is fixedly installed on the sliding seat 3091, a second lateral moving module 301 for driving the sliding seat 3091 to move is arranged between the sliding seat 3091 and the workbench 1, and the second lateral moving module 301 is symmetrically arranged on the workbench 1.

[0024] The welding mechanism 2 includes a welding base 201 symmetrically arranged on the workbench 1, a mounting platform 202 is arranged above the welding base 201, a welding gun 203 is installed on the top of the mounting platform 202, a first horizontal moving module 204 is arranged between the welding base 201 and the workbench 1, the first horizontal moving module 204 is symmetrically arranged on the workbench 1, a distance adjustment module 205 is arranged between the welding base 201 and the mounting platform 202, and the welding height of the welding gun 203 is the same as the height of the central axis of the mounting cylinder 302.

[0025] Working principle: When it is necessary to seamlessly weld the ends of two steel pipes, insert the main steel pipe into the installation tube 302 on the main fixing member 3a, and then turn on the second motor 3089 to drive the double-headed screw 3088 to rotate, driving the two sliding limit plates 3087 to move closer to each other and squeeze the two moving rings 3084. When the two moving rings 3084 are close to each other, the connecting rod 3085 pushes each clamping plate 3081 to move equidistantly toward the main steel pipe to clamp and fix the main steel pipe. Through the above method, a secondary steel pipe is installed in the installation tube 302 on one of the secondary fixing members 3b, and one side of the secondary steel pipe is The second side of the auxiliary fixing member 3b is tightly attached to the end plate 401, and then the auxiliary steel pipe is driven to move toward the main steel pipe through the second lateral moving module 301, so that the auxiliary steel pipe is tightly attached to the end of the main steel pipe, and then the third motor 3095 on the other auxiliary fixing member 3b is turned on to rotate the second gear 3094, and under the transmission of the second gear ring 3093, the installation cylinder 302 on the other auxiliary fixing member 3b is driven to rotate, so that the end plate 401 on the installation cylinder 302 faces one side of the main steel pipe, and then the second lateral moving module 301 drives the installation cylinder 302 to move toward the main steel pipe until the end plate 401 is tightly attached to one end of the main steel pipe; When three steel pipes need to be seamlessly welded, the main steel pipe is installed in the installation tube 302 on the main fixing member 3a, and the two auxiliary steel pipes are installed in the installation tubes 302 on the two auxiliary fixing members 3b respectively, and the end of the auxiliary steel pipe away from the main steel pipe needs to be in close contact with the corresponding end plate 401, wherein the outer diameter of the steel pipe needs to be smaller than the outer diameter of the semi-ring plate 4052, and the inner diameter of the steel pipe needs to be larger than the inner diameter of the semi-ring plate 4052. When the end of the steel pipe is in close contact with the end plate 401, the end of the steel pipe is also in close contact with the surface of the semi-ring plate 4052; After the steel pipe is installed, the installation cover 4061 is installed on the side of the end plate 401 away from the steel pipe. During installation, the pull rods 4076 on both sides of the end plate 401 are pulled outward, and then the installation cover 4061 is installed on the side wall of the end plate 401, so that the positioning block 4065 is inserted into the positioning groove 4071 on the end plate 401, and then the pull rod 4076 is released. At this time, the clamping block 4075 moves back under the elastic force of the third spring 4077, so that the clamping block 4075 is clamped into the clamping groove 4066, and the end plate 401 and the installation cover 4061 are clamped and fixed. At this time, the ends of the main steel pipe and the auxiliary steel pipe form a long tube, and the two ends of the long tube are respectively tightly attached to the two end plates 401, and the long tube is connected with the connecting grooves 404 on the two end plates 401, so it is connected with the inner cavities of the two installation covers 4061. At this time, one of them is The connecting pipe 4062 at the end of the installation cover 4061 is connected to the inert gas storage box, and the two valves 4063 are opened to pass inert gas into the inner cavity of the long tube. The inert gas can protect the steel pipe during welding to prevent the steel pipe from reacting with air at high temperature. After a period of inert gas is passed, the air in the long tube is completely discharged, and the valve 4063 at the gas discharge end is closed. At this time, the inert gas continues to be passed into the inner cavity of the long tube and the two installation covers 4061, so that the air pressure inside the installation cover 4061 increases, and the connecting cavity 4067 is connected with the inner cavity of the installation cover 4061, so that one side of the piston 40610 is pressed to move toward the side of the end plate 401, so that the end of the pressure rod 40611 generates pressure toward the side of the steel pipe on the semi-ring plate 4052, further pressing the main steel pipe and the auxiliary steel pipe, and improving the welding stability; When welding two steel pipes, one of the welding guns 203 is moved to the welding position through the first lateral moving module 204, and then the distance between the welding gun 203 and the weld position is adjusted through the distance adjustment module 205, and then the first motor 307 on the mounting cylinder 302 on which the steel pipe is mounted is turned on to drive the mounting cylinder 302 to rotate synchronously, so that the welding end of the steel pipe is seamlessly welded during the rotation process.

Claims

1. A seamless welding device for construction technology, comprising a workbench (1), characterized in that: The top of the workbench (1) is provided with a welding mechanism (2) and a steel pipe fixing mechanism (3); The steel pipe fixing mechanism (3) comprises a main fixing member (3a) arranged at the middle of the top end of the workbench (1) and auxiliary fixing members (3b) symmetrically arranged on both sides of the main fixing member (3a), the main fixing member (3a) and the auxiliary fixing member (3b) both comprising a mounting tube (302), a rotating driving member for centering and clamping the steel pipe and performing rotational welding is arranged outside the mounting tube (302), and an end stop mechanism (4) is arranged at one end of the mounting tube (302) on the auxiliary fixing member (3b) away from the main fixing member (3a); The end limiting mechanism (4) comprises an end plate (401) arranged on an end of the mounting tube (302) on the auxiliary fixing member (3b) away from the main fixing member (3a); a connecting groove (404) is provided in the middle of the end plate (401); a movable pressing member (405) for pressurizing the steel pipe is provided on the end plate (401); an air intake protection member (406) for driving pressurization can be installed on the end plate (401); and a clamping fixing member (407) for fixing the air intake protection member (406) is provided on the end plate (401); The movable pressing member (405) comprises two semi-annular grooves (4051) symmetrically arranged on the end plate (401), the semi-annular grooves (4051) being arranged in a semi-annular shape, a semi-annular plate (4052) being movably installed inside the semi-annular grooves (4051), the outer wall of the semi-annular plate (4052) being in close contact with the inner wall of the semi-annular grooves (4051), a limiting groove (4053) being arranged on the side away from each other of the two semi-annular grooves (4051), and a limiting block (4053) being installed on the semi-annular plate (4052). 54), a limit block (4054) is slidably installed inside the limit groove (4053), first springs (4055) are symmetrically installed on both sides of the limit block (4054), ends of the first springs (4055) are fixedly connected to the inner wall of the limit groove (4053), a limit swivel (403) is installed on one side of the end plate (401), the limit swivel (403) is rotatably installed inside the limit ring groove (402), and the limit ring groove (402) is opened at the end of the installation tube (302).

2. A seamless welding device for building technology according to claim 1, characterized in that: The air intake protection member (406) comprises a mounting cover (4061) mounted on one side of the end plate (401); the end of the mounting cover (4061) is in close contact with the surface of the end plate (401) and the surface of the semi-ring plate (4052); the outer diameter of the mounting cover (4061) is smaller than the outer diameter of the semi-ring plate (4052); a connecting pipe (4062) is mounted on one end of the mounting cover (4061); a valve (4063) is mounted on the connecting pipe (4062); side blocks (4064) are symmetrically mounted on both sides of the mounting cover (4061); a slot (4066) is provided at the end of the side block (4064); and a positioning block (4065) is mounted on one side of the side block (4064) close to the end plate (401).

3. A seamless welding device for building technology according to claim 2, characterized in that: The interior of the mounting cover (4061) is provided with a connecting cavity (4067) at an equal angle, an end groove (4068) is provided at one end of the connecting cavity (4067) close to the end plate (401), a piston (40610) is movably installed inside the connecting cavity (4067), a pressure rod (40611) is installed on the side of the piston (40610) close to the end groove (4068), the end of the pressure rod (40611) contacts the surface of the semi-ring plate (4052), a second spring (40612) is installed on the side of the piston (40610) close to the end plate (401), the end of the second spring (40612) is fixedly connected to the inner wall of the end of the connecting cavity (4067), and a side groove (4069) is provided at one end of the connecting cavity (4067) away from the end groove (4068), and the side groove (4069) is connected to the inner cavity of the mounting cover (4061).

4. A seamless welding device for building technology according to claim 3, characterized in that: The clamping fixing member (407) comprises a movable groove (4072) symmetrically opened on the end plate (401), side grooves (4073) are symmetrically opened on both sides of the movable groove (4072), a movable block (4074) is slidably installed inside the movable groove (4072), clamping blocks (4075) are symmetrically installed on both sides of the movable block (4074), a third spring (4077) is installed on the side of the movable block (4074) away from the connecting groove (404), one end of the third spring (4077) is fixedly connected to the inner wall of the end of the movable groove (4072), a pull rod (4076) is installed on one side of the movable block (4074), the pull rod (4076) passes through the outer side of the end plate (401), and positioning grooves (4071) are symmetrically opened on both sides of the end plate (401).

5. A seamless welding device for building technology according to claim 4, characterized in that: The rotary drive member comprises two rotary frames (304), the mounting cylinder (302) is rotatably mounted on the rotary frames (304), a first gear ring (305) is mounted on the outer wall of the mounting cylinder (302), a first gear (306) is meshingly connected below the first gear ring (305), the first gear (306) is fixedly connected to the output shaft of the first motor (307), a bottom seat (303) is arranged below the mounting cylinder (302), the rotary frame (304) and the first motor (307) are both mounted on the bottom seat (303), the bottom seat (303) on the main fixing member (3a) is fixed on the workbench (1), a rotary adjustment member (309) is arranged below the bottom seat (303) on the auxiliary fixing member (3b), and a centering clamp (308) is mounted on the mounting cylinder (302).

6. A seamless welding device for construction technology according to claim 5, characterized in that: The centering clamp (308) comprises a clamping plate (3081) arranged at an equal angle on the inner side of the mounting tube (302); a connecting frame (3082) is installed on the clamping plate (3081); the connecting frame (3082) is slidably connected to the mounting tube (302); a connecting block (3083) is installed at the end of the connecting frame (3082); two moving rings (3084) are coaxially arranged on the outer side of the mounting tube (302); the two moving rings (3084) are symmetrically arranged on both sides of the connecting block (3083); connecting rods (3085) are symmetrically hingedly installed at both ends of the connecting block (3083); the ends of the connecting rods (3085) are hingedly connected to the moving rings (3084) A sliding frame (3086) is installed on the bottom seat (303), and two sliding limit plates (3087) are slidably installed on the sliding frame (3086). The two sliding limit plates (3087) are respectively in contact with the two moving rings (3084) on the side away from each other. A double-headed screw (3088) is rotatably installed on the inner wall of the sliding frame (3086). The two sliding limit plates (3087) are respectively threadedly connected with two thread grooves on the double-headed screw (3088) with opposite directions. One end of the double-headed screw (3088) is fixedly connected to the output shaft of the second motor (3089), and the second motor (3089) is fixedly installed on the sliding frame (3086).

7. A seamless welding device for building technology according to claim 6, characterized in that: The rotation adjustment member (309) comprises a sliding seat (3091) arranged below the bottom seat (303) on the auxiliary fixing member (3b); a rotating shaft (3092) is rotatably mounted on the top of the sliding seat (3091); the rotating shaft (3092) is fixedly connected to the bottom seat (303); a second gear ring (3093) is mounted on the rotating shaft (3092); a second gear (3094) is meshingly connected to one side of the second gear ring (3093); the second gear (3094) is fixedly connected to the output shaft of a third motor (3095); the third motor (3095) is fixedly mounted on the sliding seat (3091); a second lateral moving module (301) for driving the sliding seat (3091) to move is arranged between the sliding seat (3091) and the workbench (1); the second lateral moving module (301) is symmetrically arranged on the workbench (1).

8. A seamless welding device for building technology according to claim 7, characterized in that: The welding mechanism (2) comprises a welding base (201) symmetrically arranged on a workbench (1); a mounting platform (202) is arranged above the welding base (201); a welding gun (203) is installed on the top of the mounting platform (202); a first transverse moving module (204) is arranged between the welding base (201) and the workbench (1); the first transverse moving module (204) is symmetrically arranged on the workbench (1); a distance adjustment module (205) is arranged between the welding base (201) and the mounting platform (202); and a welding height of the welding gun (203) is the same as the height of the central axis of the mounting cylinder (302).

9. A welding method for a seamless welding device for building technology as claimed in claim 8, characterized in that: The following steps are involved: S1. Steel pipe installation: the main steel pipe is centrally installed in the installation tube (302) on the main fixing member (3a), and the auxiliary steel pipe is centrally installed in the installation tube (302) on the auxiliary fixing member (3b); S2, limiting and pressing: the long tube composed of a plurality of steel tubes is limited and pressed by the end plates (401) at the ends of the mounting tubes (302) of the two auxiliary fixing members (3b), and the inner cavity of the long tube is connected with the connecting groove (404); S3, ventilation: install the mounting cover (4061) on the side of the end plate (401) away from the steel pipe, connect one of the connecting pipes (4062) to the inert gas storage box, ventilate the inner cavity of the long pipe and exhaust the air; S4, welding: moving the welding gun (203) to the position where two adjacent steel pipes need to be seamlessly welded, and turning on the first motor (307) on the mounting cylinder (302) on which the steel pipes are mounted, so that the steel pipes rotate synchronously, and welding is performed by the welding gun (203).

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