Steel structure welding machine for building construction

Abstract

The invention relates to the technical field of steel structure machining equipment, in particular to a steel structure welding machine for building construction, which comprises a bottom plate, placing racks are symmetrically and fixedly connected to the upper surfaces of the two sides of the bottom plate, and the tops of the placing racks are circular. Through the arranged welding assembly, the welding machine can be matched with steel pipes of different sizes due to the adjustability of a first clamping plate and a second clamping plate when the steel pipes are welded, and then the practicability of the welding machine is greatly improved; a first clamping plate and a second clamping plate can automatically contract to extrude and position a steel pipe when a motor is started, the steel pipe can be automatically driven to rotate to achieve complete welding operation after positioning is completed, the whole process is automatic, the use convenience of the welding machine is greatly improved, the manual operation link is greatly reduced, and the welding efficiency is improved. And the working safety is also greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure processing equipment, in particular to a steel structure welding machine for building construction. Background Art

[0002] In the field of construction, steel structure has become a key structural form of modern buildings due to its high strength, good toughness and plasticity. Steel structure welding machine is the core equipment for its construction. It mainly uses heating, pressurization or both to make the weldment atomically bonded to form a permanent connection. Its performance is directly related to the quality, stability and safety of steel structure, affecting the overall quality and service life of the building. It is of great significance to the construction industry. Among them, steel pipe welding equipment is more common at construction sites. Due to different length requirements of steel pipes, steel pipes are usually processed into fixed lengths during initial processing to facilitate transportation to the construction site, and then the steel pipes are further welded at the construction site.

[0003] However, traditional steel pipe welding machines have many shortcomings. In terms of applicability, the fixtures are often of fixed size or have a limited adjustment range, which makes it difficult to adapt to steel pipes of different specifications. Frequent replacement and adjustment are required, which reduces production efficiency and increases costs. In terms of automation, operations mostly rely on manual labor, such as weldment positioning, clamping and welding process control. Not only is the labor intensity high and the efficiency low, but manual operation errors can easily lead to unstable welding quality. Furthermore, the friction between the rotating parts and the weldments is not well controlled during welding, which is prone to relative sliding, affecting the welding quality and increasing the defective rate. In addition, the waste gas generated by welding is not properly treated, which pollutes the environment, endangers the health of operators, and lacks an effective waste gas collection and purification mechanism. At the same time, the key components of the equipment wear quickly, have a short life, high maintenance costs, poor stability and durability, and cannot meet the needs of efficient, precise, environmentally friendly and stable production. Improvement and optimization are imperative. Summary of the invention

[0004] The present invention provides a steel structure welding machine for building construction, which solves the problems mentioned in the above background technology.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: A steel structure welding machine for construction, comprising a bottom plate, with placement racks symmetrically fixedly connected to the upper surfaces of both sides of the bottom plate, wherein the top of the placement rack is set in a circular ring shape, and further comprising: A welding assembly, wherein the welding assembly is fixedly mounted on the middle upper surface of the bottom plate, and the welding assembly performs contraction and expansion movements around its own central axis; Auxiliary assembly, the auxiliary assembly is symmetrically fixedly installed on both sides of the welding assembly, the auxiliary assembly works through the power of the welding assembly, and the working mode of the auxiliary assembly is reciprocating motion; The welding assembly includes a mounting ring, which is fixedly connected to the middle upper surface of the base plate by a connecting rod, and the mounting ring and the top of the placement frame are set to the same central axis, a No. 1 clamping plate is set on the inner side of the mounting ring, and the No. 1 clamping plate is set in an arc shape, and a No. 2 clamping plate is set below the No. 1 clamping plate, wherein two No. 2 clamping plates are symmetrically arranged, and the No. 2 clamping plates are also set in an arc shape, and the No. 1 clamping plate and the No. 2 clamping plate are combined into a ring.

[0006] Preferably, the outer surfaces on both sides of the No. 1 splint are symmetrically fixedly connected to the No. 1 plug-in board, and the outer surfaces on both sides of the No. 2 splint are also symmetrically fixedly connected to the No. 1 plug-in board, and plug-in grooves are provided on both sides of the No. 1 plug-in board, and the No. 2 plug-in board is slidably plugged into the plug-in grooves, wherein the two ends of the No. 2 plug-in board are respectively slidably plugged into the plug-in grooves in the two adjacent No. 1 plug-in boards between the No. 1 splint and the No. 2 splint, and a welding head is fixedly connected to the inner surface of the No. 2 plug-in board at the bottom.

[0007] Preferably, the top outer surface of the mounting ring is fixedly connected to a support frame, the upper surface of the support frame is fixedly connected to a motor, the output end of the motor is rotatably connected to a threaded rod, the bottom of the threaded rod passes through the mounting ring, the bottom of the threaded rod is threadedly connected to a threaded tube, and the threaded tube is arranged in a cavity between the mounting ring and the No. 1 clamp.

[0008] Preferably, the bottom of the threaded tube is rotatably connected to a gear box, wherein a rotational damping is arranged between the threaded tube and the gear box, wherein the rotational damping between the threaded tube and the gear box is greater than the rotational damping between the threaded rod and the threaded tube, the gear box penetrates and is fixedly embedded in the outer surface of the No. 1 clamping plate, the bottom of the threaded rod is fixedly connected to a telescopic rod, the output end of the telescopic rod is rotatably connected to the input end of the gear box, wherein the telescopic rod is arranged inside the threaded tube.

[0009] Preferably, the output ends on both sides of the gear box are rotatably connected with a rotating shaft, and both ends of the rotating shaft pass through the side surface of the No. 1 clamping plate, wherein five rotating shafts are arranged at fixed intervals around the side surface of the No. 1 clamping plate, and both ends of the rotating shaft are fixedly connected with rotating rollers, and the inner surface of the No. 1 clamping plate is fixedly connected with a winding rod, and a No. 1 transmission belt is arranged inside the No. 1 clamping plate, and the No. 1 transmission belt is wound on the outer surface of the rotating shaft and the winding rod.

[0010] Preferably, a rotating shaft is also rotatably connected to the interior of the second clamping plate, and rotating rollers are also fixedly connected to both ends of the rotating shaft on the second clamping plate, wherein the distribution of the rotating rollers on the second clamping plate is the same as that of the first clamping plate.

[0011] Preferably, an expansion bladder is fixedly embedded in one end of the rotating roller away from the No. 1 clamping plate and the No. 2 clamping plate. The expansion bladder is arranged in a ring shape. The expansion bladder initially maintains the same plane with the rotating roller, and the internal cavity of the expansion bladder is connected to the plug-in slot in the No. 1 plug-in plate.

[0012] Preferably, the auxiliary assembly includes a sliding tube, which is fixedly connected to the outer surface of the No. 2 clamping plate, the interior of the No. 2 clamping plate is set to be hollow, and the inner surface of the No. 2 clamping plate is penetrated by an exhaust hole, and the exhaust hole is communicated with the internal cavity of the No. 2 clamping plate, and the sliding tube is communicated with the internal cavity of the No. 2 clamping plate, and the inner surface of the sliding tube away from the No. 2 clamping plate is slidably connected with an auxiliary tube, and the auxiliary tube passes through and is fixedly connected to the outer surface of the mounting ring, and the inner surface of the auxiliary tube is slidably connected with a sliding block, and the outer surface of the sliding block is hinged with a brake rod, and the outer end of the brake rod is rotatably connected to a crank, and the input end of the crank is rotatably connected to a connecting rod, and the end of the connecting rod away from the crank is fixedly connected to the outer surface of the mounting ring, and the input end of the crank is rotatably connected to the No. 2 transmission belt, and the end of the No. 2 transmission belt away from the crank is rotatably connected to the outer surface of the rotating shaft on the No. 2 clamping plate, wherein the No. 2 transmission belt is provided with elasticity.

[0013] Preferably, an air inlet hole is formed through the outer surface of one end of the auxiliary tube close to the second clamping plate, wherein a one-way valve is arranged at the air inlet hole, an air outlet hole is formed through the side surface of one end of the auxiliary tube close to the second clamping plate, wherein a one-way valve is arranged at the air outlet hole, an exhaust pipe is fixedly connected to the air outlet hole, receiving grooves are formed through the outer surfaces of both sides of the slide tube, the outer end of the exhaust pipe is arranged on the outer side of the slide tube through the receiving groove, an isolation membrane is fixedly connected to the inner surface of one side of the slide tube close to the second clamping plate, and the isolation membrane is far away from the end of the second clamping plate It is fixedly connected to the outer surface of the auxiliary pipe. When welding is required, the ends of the multiple sections of steel pipes that have been fixed in advance by spot welding can be inserted into the placement rack on any side of the bottom plate, and continuously pushed forward through the welding assembly until the end of the steel pipe passes through the placement rack on the other side, and the connection between the two adjacent sections of steel pipes is located at the welding assembly. When the steel pipe is placed, the motor can be started. The motor startup will drive the threaded rod to rotate, and the rotation of the threaded rod will drive the threaded pipe and the threaded rod to expand and disengage relatively, that is, the downward movement of the threaded pipe will cause No. 1 The clamping plate moves downward, and through the connection between the No. 1 plug-in plate and the No. 2 plug-in plate, the two No. 2 clamping plates will move synchronously to the inside of the mounting ring with the movement of the No. 1 clamping plate, until the rotating roller finally fits the outer surface of the steel pipe to fix the steel pipe. When the No. 1 plug-in plate and the No. 2 plug-in plate shrink, the welding head will gradually approach the connection between the two sections of the steel pipe. When the extrusion pressure between the rotating roller and the outer surface of the steel pipe reaches the maximum, the threaded pipe cannot move downward any further. At this time, driven by the rotational force of the threaded rod, the threaded pipe begins to rotate relative to the gear box, and the rotation continues. It provides a squeezing and fixing effect for the steel pipe, and the rotation of the threaded rod will synchronously drive the telescopic rod to rotate. When the telescopic rod starts to rotate, it will drive the rotating shaft to rotate through the gear box, that is, the rotation of the rotating shaft drives the rotating roller to rotate. Because the rotating roller and the steel pipe are already in a squeezing state at this time, the rotation of the rotating roller will drive the steel pipe to rotate, that is, the connection between the two sections of the steel pipe is automatically finely welded through the welding head. When the welding is completed, the motor reverses to loosen the fixation of the steel pipe, and pushes the steel pipe forward again to the next welding point, and finally completes the continuous welding operation.

[0014] The present invention provides a steel structure welding machine for building construction. It has the following beneficial effects: 1. The steel structure welding machine of this building construction can achieve the match of steel pipes of different sizes due to the adjustability of the No. 1 clamping plate and the No. 2 clamping plate when welding steel pipes through the welding assembly, thereby greatly improving the practicality of the welding machine. At the same time, through the cooperation of the threaded rod, the threaded pipe, the telescopic rod and the gear box, the No. 1 clamping plate and the No. 2 clamping plate can automatically shrink and squeeze the steel pipe to position when the motor is started, and when the positioning is completed, the steel pipe will be automatically driven to rotate to realize the complete welding operation. The whole process is automated, which greatly improves the convenience of use of the welding machine, greatly reduces the links of manual operation, and also greatly improves the safety of work.

[0015] 2. For the steel structure welding machine of this building construction, when the No. 1 plug-in plate and the No. 2 plug-in plate are contracted, the cavity of the plug-in slot inside the No. 1 plug-in plate will be reduced, thereby increasing the internal air pressure and transmitting the air pressure to the expansion bag, so that the expansion bag expands outward and is firmly squeezed on the outer surface of the steel pipe, which greatly increases the friction between the rotating roller and the steel pipe, thereby effectively avoiding the welding quality problem caused by the welding head staying in the same position for a long time due to the relative sliding between the rotating roller and the steel pipe. At the same time, arranging the expansion bag on the outside of the rotating roller can also make the expansion bag away from the high temperature welding point of the steel pipe, which greatly increases the service life of the expansion bag while reducing quality problems, reduces the maintenance times of this welding machine, and thereby reduces welding costs.

[0016] 3. The steel structure welding machine of the present building construction, when the rotating shaft rotates, it will drive the No. 2 transmission belt to rotate at the same time, and the transmission effect of the No. 2 transmission belt will drive the crank to rotate. As the crank rotates, the brake rod starts to push the slider to slide in the auxiliary pipe back and forth. When the slider moves outward, the auxiliary pipe is in a negative pressure state, and then the air pressure is extracted from the No. 2 clamping plate through the air inlet hole. When the slider moves inward, the air pressure in the auxiliary pipe increases and is exhausted to the outside through the exhaust pipe at the air outlet hole. That is, during welding, the exhaust gas generated by welding is automatically extracted through the exhaust hole on the No. 2 clamping plate and collected through the exhaust pipe, thereby greatly reducing the air pollution problem caused by welding and further improving the practicality of the present welding machine. The isolation membrane can be set to seal the cavity between the sliding pipe and the auxiliary pipe when the No. 2 clamping plate moves inward, so as to avoid the internal connection between the receiving groove and the auxiliary pipe caused by the movement of the sliding pipe, thereby reducing the effect of extracting exhaust gas, thereby greatly improving the working stability of the present welding. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the present invention; Figure 2 It is a schematic diagram of the structure of the first and second splints of the present invention; Figure 3 It is a structural schematic diagram of the No. 2 transmission belt of the present invention; Figure 4 It is a structural schematic diagram of the threaded rod of the present invention; Figure 5 It is a schematic diagram of the structure of the first transmission belt of the present invention; Figure 6 is a schematic structural diagram of the auxiliary pipe of the present invention; Figure 7 It is a structural schematic diagram of the plug-in slot of the present invention; Figure 8 It is a structural schematic diagram of the rotating roller of the present invention.

[0018] In the figure: 1, bottom plate; 2, placement frame; 3, welding assembly; 31, mounting ring; 32, No. 1 clamping plate; 33, No. 2 clamping plate; 34, No. 1 plug-in plate; 35, plug-in slot; 36, No. 2 plug-in plate; 361, welding head; 37, support frame; 38, motor; 39, threaded rod; 310, threaded pipe; 311, gear box; 312, telescopic rod; 313, rotating shaft; 314, rotating roller; 315, winding rod; 316, No. 1 transmission belt; 317, expansion bag; 4, auxiliary assembly; 41, slide pipe; 42, exhaust hole; 43, auxiliary pipe; 44, slider; 45, brake rod; 46, crank; 47, connecting rod; 48, No. 2 transmission belt; 49, air inlet; 410, air outlet; 411, exhaust pipe; 412, receiving groove; 413, isolation membrane. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] First embodiment: Figures 1 to 8 As shown, the present invention provides a technical solution: a steel structure welding machine for construction, comprising a bottom plate 1, and a placing frame 2 is symmetrically fixedly connected to the upper surface of both sides of the bottom plate 1, wherein the top of the placing frame 2 is set in a circular ring shape, and further comprising: The welding assembly 3 is fixedly mounted on the middle upper surface of the bottom plate 1, and the welding assembly 3 performs contraction and expansion movements around its own central axis; Auxiliary assembly 4, the auxiliary assembly 4 is symmetrically fixedly installed on both sides of the welding assembly 3, the auxiliary assembly 4 works through the power of the welding assembly 3, and the working mode of the auxiliary assembly 4 is reciprocating motion; The welding assembly 3 includes a mounting ring 31, which is fixedly connected to the middle upper surface of the base plate 1 through a connecting rod, and the mounting ring 31 and the top of the placement frame 2 are set to the same central axis, and a No. 1 clamping plate 32 is arranged on the inner side of the mounting ring 31, and the No. 1 clamping plate 32 is arranged in an arc shape, and a No. 2 clamping plate 33 is arranged below the No. 1 clamping plate 32, wherein two No. 2 clamping plates 33 are symmetrically arranged, and the No. 2 clamping plates 33 are also arranged in an arc shape, and the No. 1 clamping plate 32 and the No. 2 clamping plate 33 are combined into a ring.

[0021] The outer surfaces of both sides of the No. 1 clamping plate 32 are symmetrically fixedly connected to the No. 1 plug-in plate 34, and the outer surfaces of both sides of the No. 2 clamping plate 33 are also symmetrically fixedly connected to the No. 1 plug-in plate 34. Plug-in grooves 35 are opened on both sides of the No. 1 plug-in plate 34, and the No. 2 plug-in plate 36 is slidably inserted in the plug-in grooves 35, wherein the two ends of the No. 2 plug-in plate 36 are respectively slidably inserted in the plug-in grooves 35 in the two adjacent No. 1 plug-in plates 34 between the No. 1 clamping plate 32 and the No. 2 clamping plate 33, and the inner surface of the bottom No. 2 plug-in plate 36 is fixedly connected with a welding head 361.

[0022] The top outer surface of the mounting ring 31 is fixedly connected to a support frame 37, the upper surface of the support frame 37 is fixedly connected to a motor 38, the output end of the motor 38 is rotatably connected to a threaded rod 39, the bottom of the threaded rod 39 passes through the mounting ring 31, the bottom of the threaded rod 39 is threadedly connected to a threaded tube 310, and the threaded tube 310 is set in a cavity between the mounting ring 31 and the first clamp 32.

[0023] The bottom of the threaded tube 310 is rotatably connected to a gear box 311, wherein a rotation damping is arranged between the threaded tube 310 and the gear box 311, wherein the rotation damping between the threaded tube 310 and the gear box 311 is greater than the rotation damping between the threaded rod 39 and the threaded tube 310, the gear box 311 penetrates and is fixedly embedded in the outer surface of the No. 1 clamping plate 32, the bottom of the threaded rod 39 is fixedly connected to a telescopic rod 312, the output end of the telescopic rod 312 is rotatably connected to the input end of the gear box 311, wherein the telescopic rod 312 is arranged inside the threaded tube 310.

[0024] The output ends on both sides of the gear box 311 are rotatably connected with a rotating shaft 313, and both ends of the rotating shaft 313 pass through the side surface of the No. 1 clamp 32, wherein five rotating shafts 313 are arranged at fixed intervals around the side surface of the No. 1 clamp 32, and both ends of the rotating shaft 313 are fixedly connected with rotating rollers 314, and the inner surface of the No. 1 clamp 32 is fixedly connected with a winding rod 315, and a No. 1 transmission belt 316 is arranged inside the No. 1 clamp 32, and the No. 1 transmission belt 316 is wound on the outer surfaces of the rotating shaft 313 and the winding rod 315.

[0025] A rotating shaft 313 is also rotatably connected to the second clamping plate 33 , and rotating rollers 314 are fixedly connected to both ends of the rotating shaft 313 on the second clamping plate 33 . The distribution of the rotating rollers 314 on the second clamping plate 33 is the same as that of the first clamping plate 32 .

[0026] An expansion bag 317 is fixedly embedded at one end of the rotating roller 314 away from the No. 1 clamping plate 32 and the No. 2 clamping plate 33. The expansion bag 317 is arranged in a ring shape. The expansion bag 317 initially maintains the same plane as the rotating roller 314, and the internal cavity of the expansion bag 317 is connected to the plug-in slot 35 in the No. 1 plug-in plate 34.

[0027] Second embodiment: Figures 1 to 8As shown, the auxiliary assembly 4 includes a sliding tube 41, which is fixedly connected to the outer surface of the second clamping plate 33. The interior of the second clamping plate 33 is set to be hollow. An air extraction hole 42 is opened on the inner surface of the second clamping plate 33. The air extraction hole 42 is connected to the inner cavity of the second clamping plate 33. The sliding tube 41 is connected to the inner cavity of the second clamping plate 33. The inner surface of the end of the sliding tube 41 away from the second clamping plate 33 is slidably plugged with an auxiliary tube 43. The auxiliary tube 43 penetrates and is fixedly connected to the outer surface of the mounting ring 31. A slider 44 is slidably connected inside, a brake rod 45 is hinged on the outer surface of the slider 44, the outer end of the brake rod 45 is rotatably connected to a crank 46, the input end of the crank 46 is rotatably connected to a connecting rod 47, the end of the connecting rod 47 away from the crank 46 is fixedly connected to the outer surface of the mounting ring 31, the input end of the crank 46 is rotatably connected to a No. 2 transmission belt 48, the end of the No. 2 transmission belt 48 away from the crank 46 is rotatably connected to the outer surface of the rotating shaft 313 on the No. 2 splint 33, and the No. 2 transmission belt 48 is elastically provided.

[0028] An air inlet 49 is formed through the outer surface of one end of the auxiliary tube 43 close to the second splint 33, wherein a one-way valve is provided at the air inlet 49; an air outlet 410 is formed through the side surface of one end of the auxiliary tube 43 close to the second splint 33, wherein a one-way valve is provided at the air outlet 410, an exhaust pipe 411 is fixedly connected to the air outlet 410, receiving grooves 412 are formed through the outer surfaces of both sides of the slide tube 41, the outer end of the exhaust pipe 411 is arranged on the outer side of the slide tube 41 through the receiving groove 412, an isolation membrane 413 is fixedly connected to the inner surface of one side of the slide tube 41 close to the second splint 33, and the end of the isolation membrane 413 away from the second splint 33 is fixedly connected to the outer surface of the auxiliary tube 43.

[0029] During operation, when welding is required, the ends of the multiple sections of steel pipes that have been fixed in advance by spot welding can be inserted into the placement rack 2 on any side of the bottom plate 1, and continuously pushed forward through the welding assembly 3 until the end of the steel pipe passes through the placement rack 2 on the other side, and the connection between the two adjacent sections of steel pipes is located at the welding assembly 3. When the steel pipe is placed, the motor 38 can be started. The start of the motor 38 will drive the threaded rod 39 to rotate, and the rotation of the threaded rod 39 will drive the threaded tube 310 and the threaded rod 39 to expand and disengage relative to each other, that is, the downward movement of the threaded tube 310 causes the No. 1 splint 32 to move downward, and through the connection between the No. 1 plug-in plate 34 and the No. 2 plug-in plate 36, the two No. 2 splints 33 will move along with the No. 1 splint 32. The threaded tube 310 moves synchronously toward the inner side of the mounting ring 31 until the rotating roller 314 finally fits the outer surface of the steel tube to fix the steel tube. When the No. 1 plug-in plate 34 and the No. 2 plug-in plate 36 shrink, the welding head 361 will gradually approach the connection between the two sections of the steel tube. When the squeezing force between the rotating roller 314 and the outer surface of the steel tube reaches the maximum, the threaded tube 310 cannot move downward any further. At this time, driven by the rotation force of the threaded rod 39, the threaded tube 310 begins to rotate relative to the gear box 311, continuously providing the steel tube with the squeezing and fixing effect. When the threaded rod 39 rotates, it will synchronously drive the telescopic rod 312 to rotate. When the telescopic rod 312 starts to rotate, it will drive the rotating shaft 313 to rotate through the gear box 311, that is, through the rotating shaft 31 The rotation of 3 drives the rotating roller 314 to rotate. Since the rotating roller 314 and the steel pipe are already in a squeezed state at this time, the rotation of the rotating roller 314 will drive the steel pipe to rotate, that is, the connection of the two sections of the steel pipe is automatically finely welded through the welding head 361. When the welding is completed, the motor 38 reverses to loosen the fixation of the steel pipe, and pushes the steel pipe forward again to the next welding point, and finally completes the continuous welding operation. Through the set welding assembly 3, it can be achieved that when welding the steel pipe, due to the adjustability of the No. 1 clamping plate 32 and the No. 2 clamping plate 33, the welding machine can match steel pipes of different sizes, thereby greatly improving the practicality of the welding machine. At the same time, through the threaded rod 39, the threaded tube 310, the telescopic rod 312 and the gear box The cooperation of 311 can realize that when the motor 38 is started, the No. 1 clamping plate 32 and the No. 2 clamping plate 33 automatically shrink to squeeze and position the steel pipe, and when the positioning is completed, the steel pipe will be automatically driven to rotate to realize the complete welding operation. The whole process is automated, which greatly improves the convenience of use of the welding machine, greatly reduces the links of manual operation, and also greatly improves the safety of work. When the No. 1 plug-in plate 34 and the No. 2 plug-in plate 36 shrink, the cavity of the plug-in slot 35 inside the No. 1 plug-in plate 34 will be reduced, thereby increasing the internal air pressure, and the air pressure is transmitted to the expansion bag 317, so that the expansion bag 317 expands outward and firmly squeezes the outer surface of the steel pipe, that is, the friction between the rotating roller 314 and the steel pipe is greatly increased.This effectively avoids the welding quality problem caused by the welding head 361 staying in the same position for a long time due to the relative sliding between the rotating roller 314 and the steel pipe. At the same time, arranging the expansion bag 317 on the outside of the rotating roller 314 can also make the expansion bag 317 away from the welding high temperature point of the steel pipe. While reducing the quality problem, it also greatly improves the service life of the expansion bag 317, reduces the maintenance times of the welding machine, and thus reduces the welding cost. When the rotating shaft 313 rotates, it will drive the second transmission belt 48 to rotate at the same time, and the transmission effect of the second transmission belt 48 drives the crank 46 to rotate. As the crank 46 rotates, the brake rod 45 starts to push the slider 44 back and forth to slide in the auxiliary tube 43. When the slider 44 moves outward, the auxiliary tube 43 is in a negative pressure state, and then through the inlet The air hole 49 extracts air pressure from the second clamping plate 33. When the slider 44 moves inward, the air pressure in the auxiliary pipe 43 increases, and the air is exhausted to the outside through the exhaust pipe 411 at the air outlet 410, that is, the exhaust gas generated by welding is automatically extracted through the exhaust hole 42 on the second clamping plate 33 during welding, and collected through the exhaust pipe 411, thereby greatly reducing the air pollution problem caused by welding, further improving the practicality of the welding machine, and the isolation membrane 413 can be set to seal the cavity between the slide pipe 41 and the auxiliary pipe 43 when the second clamping plate 33 moves inward, so as to avoid the communication between the receiving groove 412 and the interior of the auxiliary pipe 43 as the slide pipe 41 moves, thereby reducing the effect of extracting exhaust gas, thereby greatly improving the working stability of the welding.

[0030] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "includes an element defined by... does not exclude the existence of other identical elements in the process, method, article or device including the element".

Claims

1. A steel structure welding machine for building construction, comprising a base plate (1), characterized in that: The upper surfaces of both sides of the bottom plate (1) are symmetrically fixedly connected with a placement rack (2), wherein the top of the placement rack (2) is arranged in a circular ring shape, and further comprises: A welding assembly (3), wherein the welding assembly (3) is fixedly mounted on the middle upper surface of the base plate (1), and the welding assembly (3) performs contraction and expansion movements around its own central axis; An auxiliary assembly (4), wherein the auxiliary assembly (4) is symmetrically fixedly mounted on both sides of the welding assembly (3), the auxiliary assembly (4) works by the power of the welding assembly (3), and the working mode of the auxiliary assembly (4) is reciprocating motion; The welding assembly (3) comprises a mounting ring (31), wherein the mounting ring (31) is fixedly connected to the middle upper surface of the bottom plate (1) via a connecting rod, and the mounting ring (31) and the top of the placement frame (2) are arranged to have the same central axis, a first clamping plate (32) is arranged on the inner side of the mounting ring (31), and the first clamping plate (32) is arranged in an arc shape, and a second clamping plate (33) is arranged below the first clamping plate (32), wherein two second clamping plates (33) are symmetrically arranged, and the second clamping plates (33) are also arranged in an arc shape, and the first clamping plate (32) and the second clamping plate (33) are combined into a ring shape.

2. A steel structure welding machine for construction according to claim 1, characterized in that: The outer surfaces of both sides of the No. 1 clamping plate (32) are symmetrically fixedly connected to the No. 1 plug-in plate (34), and the outer surfaces of both sides of the No. 2 clamping plate (33) are also symmetrically fixedly connected to the No. 1 plug-in plate (34). The No. 1 plug-in plate (34) is provided with plug-in grooves (35) on both sides, and the No. 2 plug-in plate (36) is slidably plugged into the plug-in grooves (35), wherein the two ends of the No. 2 plug-in plate (36) are respectively slidably plugged into the plug-in grooves (35) in the two adjacent No. 1 plug-in plates (34) between the No. 1 clamping plate (32) and the No. 2 clamping plate (33), and the inner surface of the No. 2 plug-in plate (36) at the bottom is fixedly connected to a welding head (361).

3. A steel structure welding machine for construction according to claim 2, characterized in that: The top outer surface of the mounting ring (31) is fixedly connected to a support frame (37), the upper surface of the support frame (37) is fixedly connected to a motor (38), the output end of the motor (38) is rotatably connected to a threaded rod (39), the bottom of the threaded rod (39) passes through the mounting ring (31), the bottom of the threaded rod (39) is threadedly connected to a threaded tube (310), and the threaded tube (310) is arranged in a cavity between the mounting ring (31) and the first clamping plate (32).

4. A steel structure welding machine for construction according to claim 3, characterized in that: The bottom of the threaded tube (310) is rotatably connected to a gear box (311), wherein a rotation damping is provided between the threaded tube (310) and the gear box (311), wherein the rotation damping between the threaded tube (310) and the gear box (311) is greater than the rotation damping between the threaded rod (39) and the threaded tube (310), wherein the gear box (311) penetrates and is fixedly embedded in the outer surface of the first clamping plate (32), wherein the bottom of the threaded rod (39) is fixedly connected to a telescopic rod (312), wherein the output end of the telescopic rod (312) is rotatably connected to the input end of the gear box (311), wherein the telescopic rod (312) is provided inside the threaded tube (310).

5. A steel structure welding machine for construction according to claim 4, characterized in that: The output ends on both sides of the gear box (311) are rotatably connected to a rotating shaft (313), and both ends of the rotating shaft (313) penetrate the side surface of the No. 1 clamping plate (32), wherein five rotating shafts (313) are arranged at fixed intervals around the side surface of the No. 1 clamping plate (32), and both ends of the rotating shaft (313) are fixedly connected to rotating rollers (314), and the inner surface of the No. 1 clamping plate (32) is fixedly connected to a winding rod (315), and a No. 1 transmission belt (316) is arranged inside the No. 1 clamping plate (32), and the No. 1 transmission belt (316) is wound around the outer surfaces of the rotating shaft (313) and the winding rod (315).

6. A steel structure welding machine for construction according to claim 5, characterized in that: The interior of the second clamping plate (33) is also penetrated by a rotating shaft (313) which is rotatably connected, and both ends of the rotating shaft (313) on the second clamping plate (33) are also fixedly connected to rotating rollers (314), wherein the distribution mode of the rotating rollers (314) on the second clamping plate (33) is the same as that of the first clamping plate (32).

7. A steel structure welding machine for construction according to claim 6, characterized in that: An expansion bag (317) is fixedly embedded at one end of the rotating roller (314) away from the first clamping plate (32) and the second clamping plate (33). The expansion bag (317) is arranged in a ring shape. Initially, the expansion bag (317) maintains the same plane as the rotating roller (314), and the internal cavity of the expansion bag (317) is connected to the plug-in slot (35) in the first plug-in plate (34).

8. A steel structure welding machine for construction according to claim 7, characterized in that: The auxiliary assembly (4) includes a sliding tube (41), the sliding tube (41) is fixedly connected to the outer surface of the second clamping plate (33), the interior of the second clamping plate (33) is set to be hollow, the inner surface of the second clamping plate (33) is penetrated by an exhaust hole (42), the exhaust hole (42) is connected to the inner cavity of the second clamping plate (33), the sliding tube (41) is connected to the inner cavity of the second clamping plate (33), the inner surface of the end of the sliding tube (41) away from the second clamping plate (33) is slidably connected with the auxiliary tube (43), the auxiliary tube (43) is penetrated and fixedly connected to the outer surface of the mounting ring (31), the auxiliary tube (43) ) is slidably connected to a slider (44) inside, the outer surface of the slider (44) is hinged with a brake rod (45), the outer end of the brake rod (45) is rotatably connected to a crank (46), the input end of the crank (46) is rotatably connected to a connecting rod (47), one end of the connecting rod (47) away from the crank (46) is fixedly connected to the outer surface of the mounting ring (31), the input end of the crank (46) is rotatably connected to a second transmission belt (48), one end of the second transmission belt (48) away from the crank (46) is rotatably connected to the outer surface of the rotating shaft (313) on the second clamping plate (33), and the second transmission belt (48) is provided with elasticity.

9. A steel structure welding machine for construction according to claim 8, characterized in that: An air inlet (49) is formed through the outer surface of one end of the auxiliary tube (43) close to the second clamping plate (33), wherein a one-way valve is arranged at the air inlet (49); an air outlet (410) is formed through the side surface of one end of the auxiliary tube (43) close to the second clamping plate (33), wherein a one-way valve is arranged at the air outlet (410); an exhaust pipe (411) is fixedly connected in the air outlet (410); receiving grooves (412) are formed through the outer surfaces of both sides of the slide tube (41); the outer end of the exhaust pipe (411) is arranged on the outer side of the slide tube (41) through the receiving groove (412); an isolation membrane (413) is fixedly connected to the inner surface of one side of the slide tube (41) close to the second clamping plate (33); and the isolation membrane (413) is fixedly connected to the outer surface of the auxiliary tube (43) at one end away from the second clamping plate (33).

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