Steel member welding device

Abstract

The invention provides a steel member welding device, and relates to the technical field of welding, the steel member welding device comprises a fixing frame body, and a stabilizing support is installed at the position of the included angle of the bottom edge of the fixing frame body; a collecting cover is mounted at the bottom of the stable bracket; a collecting box is mounted at the bottom of the inner side of the collecting cover, and two collecting air pumps are mounted at the top of the collecting box; a positioning support plate is mounted at the top of the rear side of the fixed frame body; a driving motor is mounted on the front side of one end of the positioning supporting plate, and second rotating transmission rods are rotationally mounted at the two ends of the inner side of the positioning supporting plate correspondingly. The inner side of a welding seam is finely polished through the polishing wheel at the bottom of the bearing plate, dirt, rust and other impurities on the surface of the welding seam are effectively removed, it is ensured that the welding seam can contain more welding water, the welding firmness degree and the overall quality are improved, and the problems that the containing space of a molten pool is limited due to the fact that the local width of the welding seam blocked by impurities is usually narrow are solved. And metal combination in the welding seam is not sufficient.

Description

Technical Field

[0001] The present invention relates to the technical field of welding, and particularly relates to a steel member welding device. Background Art

[0002] Steel members refer to steel structure combined members that can bear and transfer loads, which are formed by connecting steel plates, angle steels, channel steels, I-beams, welded or hot-rolled H-beams through cold bending or welding and connecting them through connectors. The welding of steel members is a crucial technological process. By using a welding device to weld steel members, the welding precision and efficiency of steel members are improved. In the prior art, when a welding device welds steel members, the parts of two steel members are butt-jointed with each other. Due to the influence of rust or impurities in the weld seam, the local width of the weld seam is often relatively narrow. The narrow weld seam blocked by impurities greatly limits the accommodation space of the molten pool, resulting in insufficient metal bonding inside the weld seam, thus affecting the overall strength and stability of the welded joint and further reducing the reliability and durability of the weld seam. Summary of the Invention

[0003] An embodiment of the present invention relates to a steel member welding device. The grinding wheel at the bottom of the bearing plate finely grinds the inner side of the weld seam, effectively removing impurities such as dirt and rust on the surface of the weld seam, ensuring that the weld seam can accommodate more welding water, thereby improving the welding firmness and overall quality.

[0004] In a first aspect of the present invention, a steel member welding device is provided, specifically including: a fixed frame body, the fixed frame body is a rectangular frame structure, and guide grooves are provided on the front and rear sides of the fixed frame body. A stable support is installed at the position of the bottom edge angle of the fixed frame body. Among them, a servo motor is installed on the front side of one end of the stable support; a collection cover is installed at the bottom of the stable support; the collection cover is a conical structure, and a collection box is installed at the inner bottom of the collection cover. Among them, two collection air pumps are installed on the top of the collection box; a positioning support plate is installed at the rear top of the fixed frame body; a driving motor is installed on the front side of one end of the positioning support plate, and two rotating transmission rods II are rotatably installed at both ends inside the positioning support plate; the rear ends of the two rotating transmission rods II are connected by a chain group, and the front end of one rotating transmission rod II is connected to the output end of the driving motor on the front side of one side of the positioning support plate.

[0005] Further, a guide plate is slidably installed inside the guide groove; an activity carrier plate is installed between the inner ends of the two guide plates; a support plate is installed at the inner top of the activity carrier plate.

[0006] Further, a driving rod is rotatably installed at the inner bottom of the activity carrier plate, and two fixed clamping plates are slidably installed inside the activity carrier plate; the fixed clamping plates are slidably installed outside the support plate, and the bottom of the fixed clamping plates is installed outside the driving rod.

[0007] Further, at both ends inside the stable bracket, there are rotation drive rods I rotatably installed; the rear ends of the two rotation drive rods I are connected by a chain group, and the front end of one rotation drive rod I is connected to the output end of a servo motor on the front side of one end of the stable bracket. An activity plate I is installed on the outer sides of the two rotation drive rods I.

[0008] Further, a slotted groove is provided at the top of the activity plate I, a transverse chain is installed at the bottom of the activity plate I, and a guiding slider I is slidably installed in the slotted groove at the top of the activity plate I; the side surface of the guiding slider I is connected to the side end of the transverse chain at the bottom of the activity plate I, and a driving cylinder is installed at the top of the guiding slider I. A collecting member is installed at the output end of the driving cylinder; the bottom of the collecting member is of a conical structure, and a guiding vertical pipe is installed at the bottom end of the collecting member.

[0009] Further, a driving motor is installed inside the collecting member, and a cleaning wheel is installed at the output end of the driving motor. Among them, the cleaning wheel is rotatably installed inside the collecting member; a collecting ring is slidably installed on the outer side of the collecting member through a spring; the guiding vertical pipe is slidably installed inside the guiding slider I, and a guiding pipe is installed at the bottom of the guiding vertical pipe; the guiding pipe is made of a flexible material, and the bottom of the guiding pipe is connected to the input end of a collecting air pump at the top of the collecting box.

[0010] Further, an activity plate II is rotatably installed on the outer sides of the two rotation drive rods II; a slotted groove is provided at the top of the activity plate II, a guiding slider II is slidably installed in the slotted groove at the top of the activity plate II, and a transverse chain is installed at the top of the activity plate II.

[0011] Further, the side surface of the guiding slider II is connected to the side end of the transverse chain at the top of the activity plate II, and a rotating member is installed at the bottom of the guiding slider II; a driving cylinder is installed at the bottom of the rotating member, and a connecting plate is installed at the output end at the bottom of the driving cylinder; two welding torches are installed at the bottom of the connecting plate, and a bearing plate is installed at the bottom of the connecting plate through a spring.

[0012] Further, two positioning rods are installed at the top of the bearing plate. Among them, the top of the positioning rod penetrates through the top of the connecting plate; two driving motors with opposite positions are installed at the side end of the bearing plate, and grinding wheels are installed at the output ends of the driving motors.

[0013] Further, a collecting cover is installed at the side end of the bearing plate; a collecting pipe is connected to the middle position on the outer side of the collecting cover; the bottom of the collecting pipe penetrates through the positioning support plate and the side surface of the collecting cover and is connected to the output end of another collecting air pump at the top of the collecting box.

[0014] The present invention provides a steel member welding device, which has the following beneficial effects: When the present invention is in use, the grinding wheel at the bottom of the bearing plate finely grinds the inner side of the weld seam, effectively removing impurities such as dirt and rust on the surface of the weld seam, ensuring that the weld seam can accommodate more welding water, thereby improving the welding strength and overall quality. When welding steel members, the driving motor drives the rotating transmission rod two to rotate, and then drives the movable plate two to move back and forth, and the transverse chain at the top of the movable plate two drives the guiding slider two to move left and right, realizing the precise positioning of the welding torch in three-dimensional space. The rotating part at the bottom of the guiding slider two can further adjust the angle of the welding torch, enabling it to accurately adapt to various complex and changeable weld seam positions, greatly improving the welding accuracy and flexibility.

[0015] The welding torch in the front performs spot welding, and the welding torch in the back performs connection welding. This operation mode not only improves the welding efficiency but also effectively prevents the problem of weld seam expansion caused by overheating during welding, further improving the welding quality and stability. At the same time, the design of the double welding torches also reduces the problems of overheating and wear caused by the long-term operation of a single welding torch, extending the service life of the equipment.

[0016] In addition, the cleaning wheel rotates under the action of the driving motor, effectively removing welding slag. At the same time, the design of the collecting part enables the welding slag to be centrally collected, avoiding the problems of welding slag scattering and splashing, greatly improving the efficiency of welding slag cleaning and collection. The device significantly reduces the workload of later manual cleaning. The operator no longer needs to spend a lot of time and energy cleaning the welding slag, so more energy can be devoted to other important production links, improving the overall production efficiency. By adjusting the guiding slider one, the device can be applied to the welding of steel members with different sizes and shapes, having strong versatility and adaptability. In addition, the operation of the device is simple and easy to master, reducing the operation difficulty and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings of the embodiments will be briefly introduced below.

[0018] The drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0019] In the drawings: Figure 1 A schematic diagram showing the overall structure of the present application is shown; Figure 2 A schematic cross-sectional structure diagram of the fixed frame body of the present application is shown; Figure 3 A three-dimensional structure diagram of the movable plate one of the present application is shown; Figure 4 A three-dimensional structure diagram of the guiding slider one of the present application is shown; Figure 5Shows a schematic cross-sectional structure diagram of the collection part of the present application; Figure 6 Shows a schematic three-dimensional structure diagram of the second movable plate of the present application; Figure 7 Shows a schematic three-dimensional structure diagram of the connecting plate of the present application; Figure 8 Shows a schematic three-dimensional structure diagram of the collecting hood of the present application.

[0020] List of reference numerals 1. Fixed frame; 101. Guide groove; 102. Stable support; 103. Guide plate; 104. Movable carrier plate; 105. Support plate; 106. Driving rod; 107. Fixed clamping plate; 2. Collection hood; 201. Collection box; 202. First rotating transmission rod; 203. First movable plate; 204. First guide slider; 205. Collection part; 206. Flow guiding vertical pipe; 207. Cleaning wheel; 208. Collection ring; 209. Flow guiding pipe; 3. Positioning support plate; 301. Second rotating transmission rod; 302. Second movable plate; 303. Second guide slider; 304. Rotating part; 305. Connecting plate; 306. Welding torch; 307. Bearing plate; 308. Positioning rod; 309. Grinding wheel; 3010. Collecting hood; 3011. Collection pipe. Detailed implementation manners

[0021] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0022] Please refer to Figures 1 to 8 : Embodiment

[0023] The present invention provides a steel member welding device, comprising: a fixed frame body 1, the fixed frame body 1 is a rectangular frame structure, and guiding grooves 101 are formed on the front and rear sides of the fixed frame body 1. A stabilizing support 102 is installed at the position of the included angle of the bottom edge of the fixed frame body 1. Among them, a servo motor is installed on the front side of one end of the stabilizing support 102; a guiding plate 103 is slidably installed inside the guiding groove 101; a movable carrier plate 104 is installed between the inner ends of the two guiding plates 103; a supporting plate 105 is installed on the inner top of the movable carrier plate 104; a driving rod 106 is rotatably installed on the inner bottom of the movable carrier plate 104, and two fixed clamping plates 107 are slidably installed inside the movable carrier plate 104; the fixed clamping plates 107 are slidably installed outside the supporting plate 105, and the bottom of the fixed clamping plates 107 is installed outside the driving rod 106.

[0024] In the embodiment of the present invention, when welding a steel member, the position of the fixed clamping plate 107 is adjusted according to the size and butt joint position of the steel member. The movable carrier plate 104 is moved inside the fixed frame body 1, then the movable carrier plate 104 drives the guiding plate 103 to move along the guiding groove 101, so that the supporting plate 105 on the inner top of the movable carrier plate 104 lifts the steel member. The driving rod 106 is rotated at the bottom of the movable carrier plate 104 to drive the fixed clamping plate 107 to move along the supporting plate 105, so that the fixed clamping plate 107 clamps and fixes the lifted steel member. The four fixed clamping plates 107 at different positions position the steel member to ensure the stability during the welding process.

[0025] Embodiment 2. On the basis of Embodiment 1, a collection hood 2 is installed at the bottom of the stable support 102; the collection hood 2 is of a conical structure, and a collection box 201 is installed at the inner bottom of the collection hood 2. Among them, two collection air pumps are installed at the top of the collection box 201; at both ends of the inner side of the stable support 102, a first rotating transmission rod 202 is rotatably installed; the rear ends of the two first rotating transmission rods 202 are connected by a chain group, and the front end of one first rotating transmission rod 202 is connected to the output end of the servo motor on the front side of one end of the stable support 102. An active plate 203 is installed on the outer sides of the two first rotating transmission rods 202; a slotted groove is provided at the top of the active plate 203, a transverse chain is installed at the bottom of the active plate 203, and a first guiding slider 204 is slidably installed in the slotted groove at the top of the active plate 203; the side surface of the first guiding slider 204 is connected to the side end of the transverse chain at the bottom of the active plate 203, and a driving cylinder is installed at the top of the first guiding slider 204, and a collection member 205 is installed at the output end of the driving cylinder; the bottom of the collection member 205 is of a conical structure, and a diversion vertical pipe 206 is installed at the bottom end of the collection member 205; a driving motor is installed inside the collection member 205, and a cleaning wheel 207 is installed at the output end of the driving motor. Among them, the cleaning wheel 207 is rotatably installed inside the collection member 205; a collection ring 208 is slidably installed on the outer side of the collection member 205 through a spring; the diversion vertical pipe 206 is slidably installed inside the first guiding slider 204, and a diversion pipe 209 is installed at the bottom of the diversion vertical pipe 206;The diversion pipe 209 is made of flexible material, and the bottom of the diversion pipe 209 is connected to the input end of the collection air pump at the top of the collection box 201. When welding the steel member, the welded joint of the steel member after welding is buckled on the support plate 105, so that some welding slag falls inside the collection hood 2. At the same time, the servo motor on the front side of one end of the stable support 102 drives a rotating transmission rod 202 to rotate. The rear end of the rotating transmission rod 202 drives another rotating transmission rod 202 to move synchronously through the chain group. Then the two rotating transmission rods 202 can drive the movable plate 203 to move back and forth. And the horizontal chain at the bottom of the movable plate 203 drives the guide slider 204 to move, so that the guide slider 204 moves left and right, and the guide slider 204 completes the movement in different positions of front, back, left and right. Then the driving cylinder on the top of the guide slider 204 drives the collection member 205 to move upward, so that the collection member 205 drives the cleaning wheel 207 inside to move upward to contact the welded joint position. Then the top of the collection ring 208 abuts against the welded joint, and the spring at the bottom of the collection ring 208 contracts and moves downward, so that the cleaning wheel 207 contacts the welded joint. And under the action of the driving motor, the cleaning wheel 207 rotates to clean the welding slag at the welded joint, so that the welding slag falls inside the collection member 205. A collection air pump at the top of the collection box 201 works, and the welding slag flows downward through the diversion vertical pipe 206 and enters the inside of the collection box 201 through the diversion pipe 209 under the action of the suction air flow. By cleaning and collecting the welding slag, the problem of welding slag splashing to other places is reduced, the workload of special cleaning in the later stage is reduced, and the welding quality and efficiency of the steel member are improved.;

[0026] Embodiment 3. On the basis of Embodiment 1, a positioning support plate 3 is installed at the top of the rear side of the fixed frame body 1; a driving motor is installed on the front side of one end of the positioning support plate 3, and two rotating transmission rods II 301 are rotatably installed at both ends inside the positioning support plate 3; the rear ends of the two rotating transmission rods II 301 are connected by a chain group in transmission, and the front end of one rotating transmission rod II 301 is connected to the output end of the driving motor on the front side of one side of the positioning support plate 3; two movable plates II 302 are rotatably installed on the outer sides of the two rotating transmission rods II 301; a slot is provided at the top of the movable plate II 302, a guiding slider II 303 is slidably installed in the slot at the top of the movable plate II 302, a transverse chain is installed at the top of the movable plate II 302; the side surface of the guiding slider II 303 is connected to the side end of the transverse chain at the top of the movable plate II 302, and a rotating member 304 is installed at the bottom of the guiding slider II 303; a driving cylinder is installed at the bottom of the rotating member 304, and a connecting plate 305 is installed at the output end of the bottom of the driving cylinder; two welding torches 306 are installed at the bottom of the connecting plate 305, and a bearing plate 307 is installed at the bottom of the connecting plate 305 through a spring; two positioning rods 308 are installed at the top of the bearing plate 307, wherein the top of the positioning rod 308 penetrates through the top of the connecting plate 305; two driving motors with opposite positions are installed at the side end of the bearing plate 307, a grinding wheel 309 is installed at the output end of the driving motor; a collecting hood 3010 is installed at the side end of the bearing plate 307; a collecting pipe 3011 is connected to the middle position outside the collecting hood 3010;The bottom of the collecting pipe 3011 penetrates through the positioning support plate 3 and is connected to the output end of another collecting air pump at the top of the collecting hood 2 on the side of the collecting box 201. When welding steel members, the position of the welding torch 306 is adjusted according to the position of the weld. The driving motor on the front side of one end of the positioning support plate 3 drives a rotating transmission rod two 301 to rotate. One rotating transmission rod two 301 drives another rotating transmission rod two 301 to rotate through a chain group. The two rotating transmission rods two 301 drive the movable plate two 302 to move back and forth. The horizontal chain on the top of the movable plate two 302 drives the guiding slider two 303 to move left and right, so that the rotating part 304 at the bottom of the guiding slider two 303 drives the welding torch 306 below to adjust the angle to adapt to different welds. The driving cylinder at the bottom of the rotating part 304 drives the connecting plate 305 to move downward, and the welding torch 306 below the connecting plate 305 contacts the weld. Under the action of the spring, the grinding wheel 309 at the output end of the driving motor at the bottom of the bearing plate 307 contacts the weld, and along the weld, the grinding wheel 309 grinds the inner side of the weld to ensure that the weld can hold more welding water and improve the welding strength. At the same time, another collecting air pump at the top of the collecting box 201 works, and collects the debris generated by grinding through the collecting hood 3010, so that the debris enters the collecting box 201 under the action of the air flow through the collecting pipe 3011 for collection and treatment. Grinding is carried out along the position of the weld before welding to improve the welding quality. And the two welding torches 306 carry out welding work. The front welding torch 306 carries out spot welding work, and the rear welding torch 306 carries out connection welding to prevent the problem of the weld expanding due to overheating during the welding process, further improving the welding quality and not causing the problem of the steel member deforming due to overheating.;

[0027] Working principle of this embodiment: During use, adjust the position of the fixed clamping plate 107 according to the size of the steel member and the docking position. The movable carrier plate 104 drives the guide plate 103 to move along the guide groove 101. The support plate 105 lifts the steel member. Rotate the drive rod 106 to drive the fixed clamping plate 107 to move along the support plate 105 to fix the lifted steel member. The four fixed clamping plates 107 at different positions accurately position the steel member. Adjust the position of the welding torch 306 according to the position of the weld. The drive motor on the front side of one end of the positioning support plate 3 drives the second rotating transmission rod 301 to rotate. The two second rotating transmission rods 301 drive the second movable plate 302 to move back and forth. The horizontal chain on the top of the second movable plate 302 drives the second guide slider 303 to move left and right. The rotating part 304 drives the welding torch 306 below to adapt to different welds. The drive cylinder at the bottom of the rotating part 304 drives the connecting plate 305 to move downward. The welding torch 306 below the connecting plate 305 contacts the weld. Under the action of the spring, the grinding wheel 309 at the output end of the drive motor at the bottom of the bearing plate 307 contacts the weld to grind the inner side of the weld. At the same time, the collection cover 3010 collects the debris generated by grinding. Grind along the position of the weld before welding. The front welding torch 306 performs spot welding work, and the rear welding torch 306 performs connection welding to improve the welding quality. The welded joint of the steel member after welding is buckled on the support plate 105, and part of the welding slag falls into the collection cover 2. The servo motor on the front side of one end of the stable support 102 drives the first rotating transmission rod 202 to rotate. The two first rotating transmission rods 202 can drive the first movable plate 203 to move back and forth. The horizontal chain at the bottom of the first movable plate 203 drives the first guide slider 204 to move. The drive cylinder drives the cleaning wheel 207 inside the collection member 205 to move upward to contact the welded joint position. Under the action of the drive motor, the cleaning wheel 207 rotates to rotate and clean the welding slag at the welded joint, and the welding slag falls into the collection member 205. Under the action of the suction air flow, the welding slag flows downward through the diversion vertical pipe 206 and enters the collection box 201 through the diversion pipe 209 for collection.

[0028] In this article, the following points need to be noted: 1. The attached drawings of the embodiments of the present invention only relate to the structures involved in the embodiments of the present invention. Other structures can refer to the general design.

[0029] 2. Without conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other to obtain new embodiments.

[0030] The above is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A steel member welding device, comprising: A fixed frame body (1), guide grooves (101) are formed on the front and rear sides of the fixed frame body (1), and a stabilizing bracket (102) is installed at the position of the included angle of the bottom edge of the fixed frame body (1). Among them, a servo motor is installed on the front side of one end of the stabilizing bracket (102); characterized in that, a collecting cover (2) is installed at the bottom of the stabilizing bracket (102); a collecting box (201) is installed at the inner bottom of the collecting cover (2). Among them, two collecting air pumps are installed on the top of the collecting box (201); a positioning support plate (3) is installed at the top of the rear side of the fixed frame body (1); a driving motor is installed on the front side of one end of the positioning support plate (3), and two rotating transmission rods two (301) are rotatably installed at both ends of the inner side of the positioning support plate (3); the rear ends of the two rotating transmission rods two (301) are connected by a chain group in a transmission manner, and the front end of one rotating transmission rod two (301) is connected to the output end of the driving motor on the front side of one side of the positioning support plate (3).

2. The welding device for steel members according to claim 1, characterized in that, A guide plate (103) is slidably installed inside the guide groove (101); a movable carrier plate (104) is installed between the inner ends of the two guide plates (103); a support plate (105) is installed at the inner top of the movable carrier plate (104).

3. The steel member welding device according to claim 2, characterized in that, A driving rod (106) is rotatably installed at the inner bottom of the movable carrier plate (104), and two fixed clamping plates (107) are slidably installed inside the movable carrier plate (104); the fixed clamping plates (107) are slidably installed outside the support plate (105), and the bottom of the fixed clamping plates (107) is installed outside the driving rod (106).

4. The steel member welding device according to claim 3, characterized in that, Two rotating transmission rods one (202) are rotatably installed at both ends of the inner side of the stabilizing bracket (102); the rear ends of the two rotating transmission rods one (202) are connected by a chain group in a transmission manner, the front end of one rotating transmission rod one (202) is connected to the output end of the servo motor on the front side of one end of the stabilizing bracket (102), and a movable plate one (203) is installed on the outer sides of the two rotating transmission rods one (202).

5. The welding device for steel members according to claim 4, characterized in that, A slot is formed at the top of the movable plate one (203), a transverse chain is installed at the bottom of the movable plate one (203), and a guide slider one (204) is slidably installed in the slot at the top of the movable plate one (203); the side surface of the guide slider one (204) is connected to the side end of the transverse chain at the bottom of the movable plate one (203), a driving cylinder is installed at the top of the guide slider one (204), and a collecting member (205) is installed at the output end of the driving cylinder; a flow guiding vertical pipe (206) is installed at the bottom end of the collecting member (205).

6. The steel member welding device according to claim 5, wherein, A driving motor is installed inside the collecting member (205), and a cleaning wheel (207) is installed on the output end of the driving motor. Among them, the cleaning wheel (207) is rotatably installed inside the collecting member (205); a collecting ring (208) is slidably installed on the outside of the collecting member (205) through a spring; the guiding vertical pipe (206) is slidably installed inside the guiding slider one (204), and a guiding pipe (209) is installed at the bottom of the guiding vertical pipe (206); the bottom of the guiding pipe (209) is connected to the input end of the collecting air pump at the top of the collecting box (201).

7. A steel member welding device according to claim 6, characterized in that, Two movable plates two (302) are rotatably installed on the outside of the rotating transmission rod two (301); a slot is provided at the top of the movable plate two (302), and a guiding slider two (303) is slidably installed in the slot at the top of the movable plate two (302), and a horizontal chain is installed at the top of the movable plate two (302).

8. A steel member welding device according to claim 7, characterized in that, The side surface of the guiding slider two (303) is connected to the side end of the horizontal chain at the top of the movable plate two (302), and a rotating member (304) is installed at the bottom of the guiding slider two (303); a driving cylinder is installed at the bottom of the rotating member (304), and a connecting plate (305) is installed on the output end at the bottom of the driving cylinder; two welding torches (306) are installed at the bottom of the connecting plate (305), and a bearing plate (307) is installed at the bottom of the connecting plate (305) through a spring.

9. The steel member welding device according to claim 8, characterized in that, Two positioning rods (308) are installed at the top of the bearing plate (307). Among them, the top of the positioning rod (308) penetrates through the top of the connecting plate (305); two driving motors with opposite positions are installed at the side end of the bearing plate (307), and grinding wheels (309) are installed on the output ends of the driving motors.

10. A steel member welding device according to claim 9, characterized in that, A collecting cover (3010) is installed at the side end of the bearing plate (307); a collecting pipe (3011) is connected to the middle position outside the collecting cover (3010); the bottom of the collecting pipe (3011) penetrates through the side surface of the positioning support plate (3) and the collecting cover (2) and is connected to the output end of another collecting air pump at the top of the collecting box (201).

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