Steel structure truss welding equipment and process

Abstract

The invention is suitable for the technical field of welding, and provides steel structure truss welding equipment and process, and the steel structure truss welding equipment comprises a lifting frame, a containing block and a welding gun; the feeding mechanism comprises placing cavities used for placing the reinforcing plates, the four sets of placing cavities are formed in the containing block, the placing cavities completely penetrate through the containing block, and a limiting assembly used for limiting the distance between every two adjacent sets of reinforcing plates is further arranged in the containing block; according to the welding equipment, through cooperative arrangement of the feeding mechanism and the material conveying assembly, the situation that when existing welding equipment is used for welding the reinforcing plates, workers need to hold the reinforcing plates and weld the reinforcing plates at the same time is avoided, and the welding efficiency is improved; and each finished product needs four groups of reinforcing plates, so that workers need to continuously pick up new welding materials in the welding process, and the working efficiency is seriously influenced.

Description

Technical Field

[0001] The invention relates to the technical field of welding, in particular to a steel structure truss welding device and process. Background Art

[0002] Steel structure truss is a structural system composed of straight rods, usually made of steel. Its characteristic is that the rods mainly bear axial tension or pressure. This structural form utilizes the geometric stability of the triangle and combines multiple triangular units to form a lightweight and high-strength support structure. The welding quality directly affects the safety and service life of the structure.

[0003] Most steel structure trusses are welded by main pipes, auxiliary pipes and inclined pipes. The finished products are mostly long strip structures with square cross-sections. In order to enhance their stability and facilitate installation, most of them will weld triangular reinforcement plates (mostly isosceles triangle structures, and a circular hole for fixing is opened at the center point) at the four vertex corners of the bottom of the finished product for reinforcement. When welding reinforcement plates with existing welding equipment, workers need to hold the reinforcement plates while welding, and each finished product requires four sets of reinforcement plates, which causes workers to constantly pick up new welding materials during the welding process, seriously affecting work efficiency. Therefore, in view of the above situation, it is urgent to provide a steel structure truss welding equipment and process to overcome the shortcomings in current practical applications. Summary of the invention

[0004] The purpose of the present invention is to provide a steel structure truss welding device and process, aiming to solve the problems in the above-mentioned background technology.

[0005] The present invention is implemented in this way: a steel structure truss welding device comprises: A lifting frame, a receiving block and a welding gun, wherein the lifting frame comprises a horizontal plate and a vertical plate, a walking wheel is arranged at the bottom of the horizontal plate, the vertical plate is slidably mounted on the horizontal plate, the receiving block is slidably mounted on the vertical plate, and an electric guide rail 1 for driving the receiving block to lift and lower is arranged in the vertical plate, an electric guide rail 2 for driving the vertical plate to move is arranged in the horizontal plate, and a holder for placing the welding gun is also arranged on the receiving block; A feeding mechanism, the feeding mechanism comprising a placement cavity for placing the reinforcement plates, the placement cavity is provided with four groups in the accommodation block, and the placement cavity completely penetrates the accommodation block, and a limit assembly for limiting the distance between two adjacent groups of reinforcement plates is also provided in the accommodation block; And a material transport component for picking up the reinforcement plate in the placement cavity and pressing the reinforcement plate to the welding area, wherein the material transport component is arranged on the accommodating block.

[0006] As a further solution of the present invention: at least one group of the limiting components is arranged in each placement cavity.

[0007] As a further solution of the present invention: the limit assembly includes: Support rollers, the support rollers are rotatably mounted in the side walls of the accommodating block, and the support rollers are provided in multiple groups; A conveyor belt, wherein the conveyor belt is arranged on a supporting roller, and a plurality of groups of limit strips are arranged at equal intervals on the conveyor belt; and a blocking unit for controlling the moving direction of the reinforcement plate placed in the cavity.

[0008] As a further solution of the present invention: the blocking unit includes: A strip groove is provided in the placement cavity, and a support shaft is rotatably installed in the strip groove; A limit plate, wherein the limit plate is fixedly mounted on the support shaft; A baffle plate used to block the limit plate, wherein the baffle plate is fixedly installed in the strip groove; And an elastic support sheet for pressing the limiting plate onto the baffle, wherein the elastic support sheet is fixedly installed in the strip groove, and the elastic support sheet is in sliding contact with the limiting plate.

[0009] As a further solution of the present invention: the material transport component comprises: A telescopic member 1 is disposed in the accommodating block, wherein the telescopic member 1 is located at the center of the accommodating block; Telescopic plates, four groups of which are fixedly mounted on the telescopic end of the telescopic member 1; and a fixing unit, wherein the fixing unit is arranged on the telescopic plate.

[0010] As a further solution of the present invention: the fixing unit comprises: A control box, the control box is fixedly mounted on the telescopic end of the telescopic plate, and an air cavity is provided in the control box; A catheter 1, wherein the catheter 1 is connected to the air cavity; A support tube fixedly mounted on the control box, the support tube and the air cavity are connected via a conduit, and a spray hole is provided at one end of the support tube away from the control box; A fixed airbag used to be inserted into the circular hole of the fixed plate and support the fixed plate, wherein the fixed airbag is arranged on the support tube, and the fixed airbag is connected to the air cavity through a second conduit; A control component for blocking the air inlet end of the second conduit or the air inlet end of the third conduit, wherein the control component is arranged on the control box; And a telescopic component 2 is used for driving the control box to move in the telescopic direction of the telescopic plate, wherein the telescopic component 2 is fixedly installed on the telescopic end of the telescopic component 1.

[0011] As a further solution of the present invention: the control component includes: A pressure rod slidably mounted in the control box, wherein a blocking plate is provided at the end of the pressure rod; And a spring for elastically supporting the blocking plate, wherein the spring is arranged in the air cavity.

[0012] A steel structure truss welding process, using the steel structure truss welding equipment as described above, the process comprises the following steps: Step 1: After the main pipe, auxiliary pipe and inclined pipe are welded, the steel structure trusses that need to be reinforced are stacked together; Step 2: Add a reinforcement plate into the placement cavity on the side of the receiving block away from the material transport component, and use a limiting component to place the reinforcement plate placement cavity into the placement cavity with equal spacing; Step 3: After the reinforcement plate is placed in the placement cavity, the accommodating block is moved to the vicinity of the steel structure truss by using the walking wheels, and the height of the accommodating block is adjusted by using the electric guide rail 1, and the horizontal position of the accommodating block is adjusted by using the electric guide rail 2, so that the accommodating block can be located at the center of the steel structure truss to be welded; Step 4: Use the material transport component to pick up the reinforcement plate in the placement cavity and press the reinforcement plate to the welding area, and use the welding gun to weld the connection between the reinforcement plate and the steel structure truss to be welded.

[0013] Compared with the prior art, the invention has the following beneficial effects: after the welding of the main pipe, the auxiliary pipe and the inclined pipe is completed, the steel structure trusses that need to be reinforced are stacked together, and the reinforcement plate is added to the placement cavity on the side of the receiving block away from the material transport component, and the limiting component can be used to place the reinforcement plate placement cavity into the placement cavity at equal intervals; after the reinforcement plate is placed in the placement cavity, the travel wheel is used to move the receiving block to the vicinity of the steel structure truss, and the height of the receiving block is adjusted by the electric guide rail 1, and the horizontal position of the receiving block is adjusted by the electric guide rail 2, so that the receiving block can be in the center position of the steel structure truss to be welded; its center position is the center position of the square structure at the bottom of the steel structure truss to be welded; the material transport component is used to pick up the reinforcement plate in the placement cavity and press the reinforcement plate to the welding area, and the welding gun is used to realize the welding process of the connection between the reinforcement plate and the steel structure truss to be welded; The present invention avoids the problem that when welding reinforcement plates with existing welding equipment, workers need to hold the reinforcement plates while welding, and each finished product needs to use four sets of reinforcement plates, which causes workers to constantly pick up new welding materials during the welding process, seriously affecting work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the present invention.

[0015] Figure 2It is a structural schematic diagram of the feeding mechanism in the present invention.

[0016] Figure 3 It is a schematic diagram of the structure of the feeding mechanism of the present invention when placing a reinforcement plate.

[0017] Figure 4 It is a schematic diagram of the internal structure of the containing block in the present invention.

[0018] Figure 5 It is a schematic diagram of the structure of the limiting component in the present invention.

[0019] Figure 6 for Figure 4 Schematic diagram of the enlarged structure at point A in the middle.

[0020] Figure 7 It is a schematic diagram of the structure of the material transport component in the present invention.

[0021] Figure 8 It is a structural schematic diagram of the fixing unit in the present invention.

[0022] Fig. 9 It is a schematic cross-sectional structural diagram of the fixing unit in the present invention.

[0023] In the accompanying drawings: 1-lifting frame, 2-accommodating block, 3-welding gun, 4-telescopic part 1, 5-control box, 6-telescopic plate, 7-placing cavity, 8-support tube, 9-fixed airbag, 10-support roller, 11-conveyor belt, 12-limiting strip, 13-support shaft, 14-elastic support sheet, 15-limiting plate, 16-baffle, 17-telescopic part 2, 18-catheter 1, 19-spray hole, 20-pressure rod, 21-catheter 2, 22-catheter 3, 23-air cavity, 24-sealing plate, 25-spring. DETAILED DESCRIPTION

[0024] 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. The specific implementation of the present invention is described in detail below in combination with specific embodiments.

[0025] See also Figure 1-Figure 9 , a steel structure truss welding device provided by an embodiment of the present invention comprises: A lifting frame 1, a receiving block 2 and a welding gun 3, wherein the lifting frame 1 comprises a horizontal plate and a vertical plate, wherein a walking wheel is arranged at the bottom of the horizontal plate, the vertical plate is slidably mounted on the horizontal plate, the receiving block 2 is slidably mounted on the vertical plate, and an electric guide rail 1 for driving the receiving block 2 to move up and down is arranged in the vertical plate, and an electric guide rail 2 for driving the vertical plate to move is arranged in the horizontal plate, and a holder for placing the welding gun 3 is also arranged on the receiving block 2; wherein the electric guide rail 1, the electric guide rail 2 and the welding gun 3 all adopt the existing public technology, and the welding gun 3 can be hand-held for operation; A feeding mechanism, the feeding mechanism includes a placement cavity 7 for placing the reinforcement plate, the placement cavity 7 is provided with four groups in the accommodation block 2, and the placement cavity 7 completely penetrates the accommodation block 2, and a limit assembly for limiting the distance between two adjacent groups of reinforcement plates is also provided in the accommodation block 2; And a material transport component for picking up the reinforcement plate in the placement cavity 7 and pressing the reinforcement plate to the welding area, wherein the material transport component is arranged on the receiving block 2.

[0026] In an embodiment of the present invention, after the welding of the main pipe, the auxiliary pipe and the inclined pipe is completed, the steel structure trusses that need to be reinforced are stacked together; the number of stacked steel structure trusses in the height direction is preferably three groups; on the side of the receiving block 2 away from the material transport component, the reinforcement plate is added to the placement cavity 7, and the limiting component is used to enable the reinforcement plate placement cavity 7 to be placed in the placement cavity 7 at equal intervals; after the reinforcement plate is placed in the placement cavity 7, the traveling wheel is used to move the receiving block 2 to the vicinity of the steel structure truss, and the height of the receiving block 2 is adjusted by the electric guide rail 1, and the horizontal position of the receiving block 2 is adjusted by the electric guide rail 2, so that the receiving block 2 can be in the position to be welded The center position of the steel structure truss; its center position is the center position of the square structure at the bottom of the steel structure truss to be welded; the material transport component is used to pick up the reinforcement plate in the placement cavity 7 and press the reinforcement plate to the welding area, and the welding gun 3 is used to realize the welding processing of the connection between the reinforcement plate and the steel structure truss to be welded; compared with the prior art, the present invention avoids the problem that when the existing welding equipment is welding the reinforcement plate, the staff needs to hold the reinforcement plate while welding through the coordinated setting of the feeding mechanism and the material transport component, and each finished product requires four sets of reinforcement plates, which causes the staff to constantly pick up new welding materials during the welding process, seriously affecting the work efficiency.

[0027] In one embodiment of the present invention, see Figure 1-Figure 9 , at least one set of the limiting components is provided in each placement cavity 7; The limiting component comprises: Support rollers 10, the support rollers 10 are rotatably mounted in the side wall of the accommodating block 2, and the support rollers 10 are provided in multiple groups; A conveyor belt 11, wherein the conveyor belt 11 is arranged on a support roller 10, and a plurality of limit strips 12 are arranged on the conveyor belt 11 at equal intervals; wherein the support roller 10 and the conveyor belt 11 can be meshed and connected by a toothed structure; and a blocking unit for controlling the moving direction of the reinforcement plate placed in the cavity 7; The blocking unit comprises: A strip groove is provided in the placement cavity 7, in which a support shaft 13 is rotatably mounted; A limit plate 15, wherein the limit plate 15 is fixedly mounted on the support shaft 13; A baffle plate 16 for blocking the limiting plate 15, wherein the baffle plate 16 is fixedly installed in the strip groove; And an elastic support sheet 14 for pressing the limiting plate 15 onto the baffle 16 , wherein the elastic support sheet 14 is fixedly installed in the strip groove, and the elastic support sheet 14 and the limiting plate 15 are in sliding contact.

[0028] In this embodiment, when in use, the reinforcement plate is added to the placement cavity 7 from the end away from the material transport component. After the reinforcement plate is pushed into the placement cavity 7, the blocking effect of the limit bar 12 on the reinforcement plate enables the reinforcement plate to use the limit bar 12 to push the conveyor belt 11 to move. When the next set of limit bars 12 appears at the feed port, the next set of reinforcement plates will continue to be placed and pushed to the side of the material transport component. At this time, the conveyor belt 11 will drive the previous set of reinforcement plates to move synchronously through the limit bar 12. By repeating the above steps, multiple sets of reinforcement plates can be added to the placement cavity 7, which effectively avoids the problem that the staff needs to pick up new welding materials multiple times during the welding process, effectively improving the welding efficiency, and utilizing the blocking effect of the baffle 16 on the limit plate 15 can effectively prevent the reinforcement plate from moving in the opposite direction in the placement cavity 7, facilitating the operation of the material transport component.

[0029] In one embodiment of the present invention, see Figure 1-Figure 9 , the material transport component comprises: A telescopic member 4 is disposed in the accommodating block 2, wherein the telescopic member 4 is located at the center of the accommodating block 2; Telescopic plates 6, four groups of which are fixedly mounted on the telescopic end of the telescopic member 4; and a fixing unit, wherein the fixing unit is arranged on the telescopic plate 6; The fixing unit comprises: A control box 5, wherein the control box 5 is fixedly mounted on the telescopic end of the telescopic plate 6, and an air cavity 23 is provided in the control box 5; A conduit 18, wherein the conduit 18 is connected to the air cavity 23; A support tube 8 fixedly mounted on the control box 5, wherein the support tube 8 is connected to the air cavity 23 via a conduit 3 22, and a spray hole 19 is formed at one end of the support tube 8 away from the control box 5; A fixed airbag 9 for inserting into the circular hole of the fixed plate and supporting the fixed plate, wherein the fixed airbag 9 is arranged on the support tube 8, and the fixed airbag 9 is connected to the air cavity 23 through a second conduit 21; A control component for blocking the air inlet end of the second conduit 21 or the air inlet end of the third conduit 22, wherein the control component is disposed on the control box 5; and a telescopic member 2 17 for driving the control box 5 to move in the telescopic direction of the telescopic plate 6, wherein the telescopic member 2 17 is fixedly mounted on the telescopic end of the telescopic member 1 4; wherein both the telescopic member 1 4 and the telescopic member 2 17 can be electric telescopic rods; The control component comprises: A pressure rod 20 slidably mounted in the control box 5, wherein a blocking plate 24 is provided at the end of the pressure rod 20; And a spring 25 for elastically supporting the blocking plate 24 , wherein the spring 25 is arranged in the air cavity 23 .

[0030] In this embodiment, when in use, the conduit 18 is connected to the external gas source, and the telescopic member 4 can insert the support tube 8 into the circular hole of the reinforcement plate by driving the telescopic plate 6 to move toward one side of the accommodating block 2. When the spray hole 19 is just at the two side positions of the reinforcement plate (at this time, the pressure rod 20 is not pressed, and the blocking plate 24 blocks the air inlet end of the conduit 21), the conduit 18 introduces the gas into the support tube 8 through the air cavity 23 and the conduit 3 22, and sprays it out through the spray hole 19. The gas sprayed from the spray hole 19 can be used to blow and clean the right-angled edge of the reinforcement plate (i.e., the edge to be welded) to remove fine impurities, thereby improving the welding quality. After cleaning, the telescopic member 4 drives the telescopic plate 6 to continue to move toward one side of the accommodating block 2 until the fixed airbag 9 is inserted into the circular hole. The reinforcing plate can press the pressure rod 20 so that the pressure rod 20 drives the blocking plate 24 to separate from the conduit 21, thereby pressing the blocking plate 24 onto the conduit 3 22. At this time, the gas in the air cavity 23 will enter the fixed airbag 9 through the conduit 21, so that the fixed airbag 9 expands. The expanded fixed airbag 9 can support and fix the reinforcement plate. When the control box 5 presses the reinforcement plate, the blocking unit can prevent the reinforcement plate from moving in the opposite direction. After the fixation is completed, the telescopic member 4 will drive the telescopic plate 6 to move away from the accommodating block 2, and cooperate with the telescopic member 2 17 to drive the control box 5 to move, so as to press the reinforcement plate to the welding position; wherein the end of the telescopic member 4 can be provided with a visual sensor, so as to facilitate the alignment of the accommodating block 2 with the center position of the steel structure truss to be welded, and also facilitate the pressing of the reinforcement plate to the welding position, wherein the visual sensor adopts the existing public technology, and the device can be provided with a controller used in conjunction with the visual sensor, so as to facilitate the combination of visual signals to control the working state of the telescopic member 4, the telescopic member 2 17, and the two sets of electric guide rails (electric guide rail 1 and electric guide rail 2).

[0031] See also Figure 1-Figure 9 The embodiment of the present invention provides a steel structure truss welding process, using the steel structure truss welding equipment as described above, and the process includes the following steps: Step 1: After the main pipe, auxiliary pipe and inclined pipe are welded, the steel structure trusses to be reinforced are stacked together; wherein the number of stacked steel structure trusses in the height direction is preferably three groups; Step 2: Add the reinforcement plate into the placement cavity 7 on the side of the receiving block 2 away from the material transport component, and use the limiting component to place the reinforcement plate placement cavity 7 in the placement cavity 7 at equal intervals; Step 3: After the reinforcement plate is placed in the placement cavity 7, the accommodating block 2 is moved to the vicinity of the steel structure truss by the walking wheels, and the height of the accommodating block 2 is adjusted by the electric guide rail 1, and the horizontal position of the accommodating block 2 is adjusted by the electric guide rail 2, so that the accommodating block 2 can be located at the center position of the steel structure truss to be welded; its center position is the center position of the square structure at the bottom of the steel structure truss to be welded; Step 4: Use the material transport assembly to pick up the reinforcement plate in the placement cavity 7 and press the reinforcement plate to the welding area, and use the welding gun 3 to achieve welding processing on the connection between the reinforcement plate and the steel structure truss to be welded.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "slide", "rotate", "fix", "have" and the like should be understood in a broad sense, for example, it can be a welding connection, a bolt connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel structure truss welding equipment, comprising a lifting frame, a receiving block and a welding gun, wherein the lifting frame comprises a horizontal plate and a vertical plate, the bottom of the horizontal plate is provided with a walking wheel, the vertical plate is slidably mounted on the horizontal plate, the receiving block is slidably mounted on the vertical plate, and an electric guide rail 1 for driving the receiving block to lift and lower is arranged in the vertical plate, an electric guide rail 2 for driving the vertical plate to move is arranged in the horizontal plate, and a holder for placing a welding gun is also arranged on the receiving block, characterized in that: Also includes: A feeding mechanism, the feeding mechanism comprising a placement cavity for placing the reinforcement plates, the placement cavity is provided with four groups in the accommodation block, and the placement cavity completely penetrates the accommodation block, and a limit assembly for limiting the distance between two adjacent groups of reinforcement plates is also provided in the accommodation block; And a material transport component for picking up the reinforcement plate in the placement cavity and pressing the reinforcement plate to the welding area, wherein the material transport component is arranged on the accommodating block.

2. The steel structure truss welding equipment according to claim 1, characterized in that: At least one group of the limiting components is arranged in each placement cavity.

3. The steel structure truss welding equipment according to claim 1, characterized in that: The limiting component comprises: Support rollers, the support rollers are rotatably mounted in the side walls of the accommodating block, and the support rollers are provided in multiple groups; A conveyor belt, wherein the conveyor belt is arranged on a supporting roller, and a plurality of groups of limit strips are arranged at equal intervals on the conveyor belt; and a blocking unit for controlling the moving direction of the reinforcement plate placed in the cavity.

4. The steel structure truss welding equipment according to claim 3, characterized in that: The blocking unit comprises: A strip groove is provided in the placement cavity, and a support shaft is rotatably installed in the strip groove; A limit plate, wherein the limit plate is fixedly mounted on the support shaft; A baffle plate used to block the limit plate, wherein the baffle plate is fixedly installed in the strip groove; And an elastic support sheet for pressing the limiting plate onto the baffle, wherein the elastic support sheet is fixedly installed in the strip groove, and the elastic support sheet is in sliding contact with the limiting plate.

5. The steel structure truss welding equipment according to claim 1, characterized in that: The material transport component comprises: A telescopic member 1 is disposed in the accommodating block, wherein the telescopic member 1 is located at the center of the accommodating block; Telescopic plates, four groups of which are fixedly mounted on the telescopic end of the telescopic member 1; and a fixing unit, wherein the fixing unit is arranged on the telescopic plate.

6. The steel structure truss welding equipment according to claim 5, characterized in that: The fixing unit comprises: A control box, the control box is fixedly mounted on the telescopic end of the telescopic plate, and an air cavity is provided in the control box; A catheter 1, wherein the catheter 1 is connected to the air cavity; A support tube fixedly mounted on the control box, the support tube and the air cavity are connected via a conduit, and a spray hole is provided at one end of the support tube away from the control box; A fixed airbag used to be inserted into the circular hole of the fixed plate and support the fixed plate, wherein the fixed airbag is arranged on the support tube, and the fixed airbag is connected to the air cavity through a second conduit; A control component for blocking the air inlet end of the second conduit or the air inlet end of the third conduit, wherein the control component is arranged on the control box; And a telescopic component 2 is used for driving the control box to move in the telescopic direction of the telescopic plate, wherein the telescopic component 2 is fixedly installed on the telescopic end of the telescopic component 1.

7. The steel structure truss welding equipment according to claim 6, characterized in that: The control component comprises: A pressure rod slidably mounted in the control box, wherein a blocking plate is provided at the end of the pressure rod; And a spring for elastically supporting the blocking plate, wherein the spring is arranged in the air cavity.

8. A steel structure truss welding process, characterized in that: Using the steel structure truss welding equipment as described in any one of claims 1 to 7, the process includes the following steps: Step 1: After the main pipe, auxiliary pipe and inclined pipe are welded, the steel structure trusses that need to be reinforced are stacked together; Step 2: Add a reinforcement plate into the placement cavity on the side of the receiving block away from the material transport component, and use a limiting component to place the reinforcement plate placement cavity into the placement cavity with equal spacing; Step 3: After the reinforcement plate is placed in the placement cavity, the accommodating block is moved to the vicinity of the steel structure truss by using the walking wheels, and the height of the accommodating block is adjusted by using the electric guide rail 1, and the horizontal position of the accommodating block is adjusted by using the electric guide rail 2, so that the accommodating block can be located at the center of the steel structure truss to be welded; Step 4: Use the material transport component to pick up the reinforcement plate in the placement cavity and press the reinforcement plate to the welding area, and use the welding gun to weld the connection between the reinforcement plate and the steel structure truss to be welded.

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