A connecting device for steel structures

Abstract

The present application relates to the technical field of metal welding, and particularly relates to a connecting device for steel structure, which comprises a flexible hanging piece, a rotating adjusting piece, a laser welding mechanism and an auxiliary piece. An operator firstly attaches the flexible hanging piece to a required welding surface, and then welds a required welding area by using the laser welding mechanism. Due to the special structure of the flexible hanging piece, the flexible hanging piece can be maximally attached to the welding surface, the laser welding mechanism can be uniformly moved on the flexible hanging piece, and the laser welding mechanism can be adjusted at the same time, so that the welding difficulty is effectively simplified and different welding areas can be adapted. The welding auxiliary material can also be conveyed by the auxiliary piece, and the connecting device has good practicability and economy, and is beneficial to the promotion and use of the equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of metal welding, and particularly relates to a connecting device for a steel structure. BACKGROUND

[0002] Laser welding has high stability and low cost, and is widely used in production and manufacturing fields and is widely used in welding parts of landscape facilities and the like.

[0003] Traditional laser welding is assisted by a welding robot or is manually used by a senior welder, and the operation is difficult. In addition, due to the complexity of the welding area, welding is often performed outdoors, and in this case, a welding robot in a fixed position cannot be used. In addition, ordinary welders cannot perform welding operations on different welding edges, such as circular, polygonal, and polyline edges. Therefore, a welding device that can adapt to different welding structures and simplify the welding difficulty is needed for welding of outdoor facilities. SUMMARY

[0004] In order to solve the above problems existing in the prior art, the present application aims to provide a connecting device for a steel structure which is simple to operate, convenient for outdoor facility welding, and effectively realizes uniform welding lines of different structures.

[0005] The technical scheme adopted by the present application is as follows: a connecting device for a steel structure, comprising

[0006] The flexible hanging piece comprises an elastic bending rod, a plurality of bending grooves are arranged on both sides of the middle part of the elastic bending rod, and the bending grooves on both sides are arranged in a straight line array in a staggered and staggered manner.

[0007] The laser welding mechanism comprises a support disc, a rotating support rod is symmetrically arranged on both sides of the support disc, a laser emitter is arranged on the side of the support disc away from the elastic bending rod, the emission direction of the laser emitter is perpendicular to the axis of the support disc, a rotating part is arranged between the laser emitter and the support disc to rotate the laser emitter about the central axis of the rotating support rod, and a movable part is arranged between the support disc and the elastic bending rod to assist the support disc in moving under the guidance of the elastic bending rod.

[0008] The rotating adjusting part is arranged on the side of the elastic bending rod close to the movable part to assist the laser welding mechanism in rotating about the central axis of the flexible hanging piece.

[0009] In an embodiment, a spring middle rod is arranged on the central axis of the elastic bending rod, the spring middle rod penetrates into and is slidingly connected to the elastic bending rod, and the elastic bending rod is arranged at both ends of the holding handle.

[0010] In an embodiment, the rotating member comprises a fixed plate, the laser emitter is fixedly connected to the middle of the fixed plate, the fixed plate is provided with an extension rod on both sides, the extension rod is provided with a second rotating rod at the end away from the fixed plate, the axis of the second rotating rod is parallel to the fixed plate, and the second rotating rod is rotatably connected to the rotating support rod at the end close to the support disc.

[0011] In an embodiment, the rotating member further comprises two sets of clamping assemblies, the clamping assembly comprises a main clamping plate, an auxiliary connecting rod, an auxiliary clamping plate, and a connecting screw, the main clamping plate on one clamping assembly is vertically and fixedly connected to the support disc, the auxiliary clamping plate is arranged on one side of the main clamping plate, the auxiliary clamping plate clamps the laser emitter in cooperation with the main clamping plate, the auxiliary connecting rod is arranged on one side of the main clamping plate, the auxiliary connecting rod on one side of the auxiliary connecting rod fixed to the support disc is fixed to the support disc, the auxiliary connecting rod is provided with a mushroom-shaped protrusion at one end, the mushroom-shaped protrusion penetrates into and is slidably connected to one side of the auxiliary clamping plate, the guiding direction of the mushroom-shaped protrusion is the same as the direction in which the auxiliary clamping plate clamps the laser emitter, and the connecting screw connects the auxiliary clamping plate and the main clamping plate.

[0012] In an embodiment, the movable member comprises a rotating wheel arranged between the support disc and the elastic bending rod, the rotating wheel is a groove wheel structure, the side groove of the rotating wheel abuts against the elastic bending rod, a first rotating rod is arranged on the axis of the rotating wheel and penetrates through, the connecting long plate is arranged on both sides of the first rotating rod, an extension plate is arranged between the connecting long plate and the support disc, and a rotating motor is further arranged on the connecting long plate, the rotating motor is used to drive the first rotating rod to rotate the rotating wheel.

[0013] In an embodiment, the connecting long plate is provided with a sliding transverse groove at both ends, the sliding transverse groove is axially away from the flexible hanging piece, a sliding column is arranged between two groups of opposite sliding transverse grooves, the sliding column penetrates through and is slidably connected to the sliding transverse groove, a tension spring is arranged at the end of the sliding transverse groove away from the elastic bending rod, the tension spring is fixedly connected to the sliding column, a connecting extension block is arranged in the middle of the sliding column, a connecting notched ring is arranged on the connecting extension block, and the connecting notched ring buckles the periphery of the elastic bending rod.

[0014] In an embodiment, the rotating adjusting member comprises two groups of elastic adjusting rods arranged on one side of the connecting long plate close to the elastic bending rod, the elastic adjusting rods are parallel to the axis of the elastic bending rod, both ends of the elastic bending rod are further arranged on a rotating ring, the rotating ring is rotatably connected to the elastic bending rod, both ends of the elastic adjusting rod are provided with movable rolling balls, the movable rolling balls are rotatably connected to the rotating ring, the elastic adjusting rod penetrates and is slidably connected to the movable rolling ball, a push spring penetrated by the elastic adjusting rod is arranged between the rotating ring and the end of the elastic adjusting rod, an adjusting knob is arranged on the side of the rotating ring close to the holding handle, a connecting sliding block is arranged in the middle of the connecting long plate, and the elastic adjusting rod penetrates and is slidably connected to the connecting sliding block.

[0015] In an embodiment, the laser welding mechanism is further provided with an auxiliary member for supplementing welding materials, the auxiliary member comprises a sliding long rod, a through hole is arranged on the fixed plate, the sliding long rod penetrates and is slidably connected to the through hole, a rotating fixing nail is arranged on one side of the fixed plate, the rotating fixing nail penetrates into the through hole and abuts against the sliding long rod, a movable plate is arranged at the end of the sliding long rod away from the blocking end of the laser emitter, a push spring penetrated by the sliding long rod is arranged between the movable plate and the fixed plate, a connecting plate is arranged at one end of the movable plate, a material pipe is arranged in the middle of the connecting plate, and the axis of the connecting plate intersects with the ray of the laser emitter at one point.

[0016] In an embodiment, a fixed side plate is further arranged on the connecting plate, an arc-shaped notch groove is arranged in the middle of the material pipe, a third rotating rod is arranged on the fixed side plate, a friction wheel is arranged in the middle of the third rotating rod, the friction wheel is rotatably connected to the third rotating rod, a torsion spring penetrated by the third rotating rod is arranged between the friction wheel and the fixed side plate, one rotating tangent direction of the friction wheel is parallel to the axis of the material pipe, and the friction wheel penetrates into the arc-shaped notch groove.

[0017] In an embodiment, an observation device is further arranged on the connecting plate, and the observation device is used for observing the welding point.

[0018] The beneficial effects of the present application are that the present application is simple to operate, convenient for welding of outdoor facilities, and effectively realizes a connecting device for steel structure for uniformly welding lines of different structures, and the specific implementation mode is as follows:

[0019] The operator first adheres the elastic bending rod to the required welding surface, then pulls the holding handle to make the elastic bending rod periphery side adhere to the required welding surface to the greatest extent, like a rope, and then rotates the connecting screw to make the main clamping plate and the auxiliary clamping plate be clamped and fixed under the guidance of the mushroom protrusions; the laser emitter ray is perpendicular to the support disc axis, and the welding line of the laser welding mechanism is adjusted to directly shoot the welding point by rotating the elastic bending rod, forming a guide rail structure for the movement of the laser welding mechanism. Due to the structure of the bending groove on the elastic bending rod, the bending expansion of the flexible pendant bending part can be reduced when adhering to the surface, so that the surface is not deformed to a greater extent, and then welding can be performed.

[0020] The welding device is started, and the rotating motor is continuously started during welding, so that the rotating motor drives the rotating wheel to rotate, and the rotating wheel drives the connecting gap ring to slide on the elastic bending rod. Since the sliding column connected by the connecting extension block on the connecting gap ring is arranged in the sliding transverse groove, when the elastic bending rod is bent inward or outward, the sliding transverse groove can also adjust the spacing of the connecting gap ring to the connecting long plate through the pulling action of the sliding column. The sliding column can also drive the connecting gap ring to swing along the sliding column axis, so as to better adhere to the elastic bending rod and prevent the laser welding mechanism from falling off the flexible pendant. At the same time, the elastic adjusting rod pulls the connecting sliding block on the connecting long plate to make the rotating wheel always adhere to the elastic bending rod, so that the device can be normally mounted on the elastic bending rod. Through the above operation, the laser emitter can be welded along the guide rail by the movement of the rotating wheel, simplifying the welding process and difficulty.

[0021] Through the above process in welding, part of the area such as the bending line welding part is welded along the track. Since the flexible pendant cannot completely adhere to the surface, the laser emitter is offset during welding. In order to avoid the above situation, the adjusting knob is rotated to rotate the rotating ring. When the rotating ring rotates, the elastic adjusting rod between the rotating rings rotates along the flexible pendant axis. Since the laser emitter is away from the welding area, only a slight adjustment is needed to realize the movement of the welding point in a large range. The elastic adjusting rod drives the laser emitter on the laser welding mechanism to rotate. Since the elastic bending rod is bent, the rotation of the two groups of elastic adjusting rods between the two rotating rings results in different lengths. Through the cooperation of the extrusion spring and the rolling ball, the angle between the elastic adjusting rods in the rotating rings is adjusted, so that the length of the elastic adjusting rod between the rotating rings is adjusted, the support of the laser welding mechanism is better matched, and the problem of welding point offset is solved when the elastic bending rod is bent too much inward or outward.

[0022] Due to the need to add other metals for repair welding and the like during partial welding, first rotate the friction wheel for several turns, then pass the metal strip through the pipe in the feeding pipe to connect the end of the metal strip to the welding point and the intersection of the laser emission, and then during the movement of the laser welding mechanism, use the torsion spring to rotate the friction wheel to drive the friction wheel to rub the metal strip in the feeding pipe through the arc-shaped notch slot to complete the addition and real-time transportation of the welding material, effectively reducing the welding difficulty, and at the same time, by adjusting the position of the sliding long rod on the fixed plate by adjusting the extrusion pushing spring and then fixing by rotating the fixed nail, the effect of not affecting the welding quality due to distance during laser welding is utilized to realize the movement of the welding point and adapt to different welding areas.

[0023] At the same time, in order to realize the end connection welding of the two groups of pipe structures, when using the above method, rotate the fixed plate on the rotating support rod along the extension rod, then make the laser emitter shooting point emit vertically on the fitting plane, then rotate the connecting screw to make the second group of main clamping plates and auxiliary clamping plates continue to be clamped under the guidance of the mushroom protrusions, and then the above method can be used to continue welding, effectively solving the end connection of the two groups of pipes, and at the same time, the observation device can better observe the welding effect or assist in welding by using a camera,

[0024] The device has a simple structure, effectively utilizes the flexible guiding effect of the elastic bending rod to realize the movement of the welding device, simplifies the welding difficulty, can also realize the adjustment of the welding points in the dead zone during movement, has good practicability and economy, and is beneficial to the promotion and use of the device. BRIEF DESCRIPTION OF DRAWINGS

[0025] The application will be further described in detail below in combination with the drawings and specific implementation methods.

[0026] Figure 1 is a perspective view of the present application;

[0027] Figure 2 is a perspective view of the flexible hanging part of the present application;

[0028] Figure 3 is a perspective view of the rotating adjusting part of the present application;

[0029] Figure 4 is an exploded perspective view of the rotating adjusting part of the present application;

[0030] Figure 5 is a perspective view of the laser welding mechanism part of the present application;

[0031] Figure 6 is a perspective view of the second part of the laser welding mechanism of the present application;

[0032] Figure 7is the third part of the laser welding mechanism of the present application, a schematic diagram of the structure of the part;

[0033] Figure 8 is the fourth part of the laser welding mechanism of the present application, a schematic diagram of the structure of the part;

[0034] Figure 9 is the fifth part of the laser welding mechanism of the present application, a schematic diagram of the structure of the part;

[0035] Figure 10 is the schematic diagram of the structure of the auxiliary part of the present application;

[0036] Figure 11 is the second schematic diagram of the structure of the auxiliary part of the present application.

[0037] BRIEF DESCRIPTION OF DRAWINGS: 1, flexible hanging part; 11, elastic bending rod; 12, bending groove; 13, elastic middle rod; 14, holding handle; 2, rotating adjusting part; 21, rotating ring; 211, adjusting knob; 22, elastic adjusting rod; 221, push spring; 222, movable rolling ball; 23, connecting notch ring; 231, sliding column; 232, connecting extension block; 24, connecting long plate; 241, sliding transverse groove; 242, tension spring; 243, connecting sliding block; 244, rotating motor; 25, extension plate; 251, rotating wheel; 2511, first rotating rod; 26, supporting disc; 261, rotating supporting rod; 3, laser welding mechanism; 31, second rotating rod; 32, fixed plate; 321, through hole; 322, rotating fixing nail; 33, laser emitter; 34, extension rod; 35, main clamping plate; 351, auxiliary fixing rod; 36, auxiliary connecting rod; 361, auxiliary clamping plate; 362, mushroom protrusion; 37, connecting screw; 4, auxiliary part; 41, sliding long rod; 42, push spring; 43, movable plate; 431, connecting plate; 432, material pipe; 4321, arc-shaped cutout groove; 433, fixed side plate; 44, third rotating rod; 441, torsion spring; 45, friction wheel; 46, observation device. DETAILED DESCRIPTION

[0038] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application, that is, the described examples are only a part of the examples of the present application, but not all the examples. The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations.

[0039] The following detailed description of embodiments of the application provided in the accompanying drawings is not intended to limit the scope of the application as claimed, but merely represents selected embodiments of the application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments of the application, without making creative efforts, fall within the scope of protection of the application.

[0040] The specific embodiments of the application are described below with reference to the accompanying drawings. Figures 1-11 A connecting device for steel structure comprises

[0041] The flexible hanging piece 1 comprises an elastic bending rod 11 made of elastic material such as rubber, etc. A plurality of bending grooves 12 are arranged on both sides of the middle part of the elastic bending rod 11. The bending grooves 12 on both sides are arranged in a straight line array in a staggered and staggered manner, forming a fishbone-like structure. When bending, the extrusion between materials can be reduced to the maximum, and the welding surface is as close as possible.

[0042] The laser welding mechanism 3 comprises a support disc 26, the support disc 26 is provided with symmetrically arranged rotating support rods 261 on both sides, the side of the support disc 26 away from the elastic bending rod 11 is provided with a laser emitter 33, the laser emitter 33 is a prior art, mainly a device for welding operation by using laser, which is not described here, at the same time, the form of the emission end and the laser line adopted in the drawing is not the actual structure, nor the emission length, only the position relationship is shown, the emission direction of the laser emitter 33 is perpendicular to the axis of the support disc 26, the rotating part is arranged between the laser emitter 33 and the support disc 26, which is used to rotate the laser emitter 33 around the central axis of the rotating support rod 261, the rotating part comprises a fixed plate 32, the laser emitter 33 is fixedly connected to the middle part of the fixed plate 32, the both sides of the fixed plate 32 are provided with extension rods 34, the end of the extension rod 34 away from the fixed plate 32 is provided with a second rotating rod 31, the axis of the second rotating rod 31 is parallel to the fixed plate 32, the end of the second rotating rod 31 close to the support disc 26 is rotatably connected to the rotating support rod 261; the rotating part further comprises two groups of clamping assemblies, the clamping assembly comprises a main clamping plate 35, an auxiliary connecting rod 36, an auxiliary clamping plate 361 and a connecting screw 37, the main clamping plate 35 on one clamping assembly is vertically and fixedly connected to the support disc 26, the auxiliary clamping plate 361 is arranged on one side of the main clamping plate 35, the auxiliary clamping plate 361 clamps the laser emitter 33 in cooperation with the main clamping plate 35, the auxiliary connecting rod 36 is arranged on one side of the main clamping plate 35, the auxiliary connecting rod 36 fixed to one side of the support disc 26 is fixed to the support disc 26, the end of the auxiliary connecting rod 36 is provided with a mushroom-shaped protrusion 362, the mushroom-shaped protrusion 362 penetrates into and is slidably connected to one side of the auxiliary clamping plate 361, a T-shaped slot type sliding buckle structure can also be used, the guide direction of the mushroom-shaped protrusion 362 is the same as the direction of the auxiliary clamping plate 361 clamping the laser emitter 33, the connecting screw 37 connects the auxiliary clamping plate 361 and the main clamping plate 35, the main clamping plate 35 and the auxiliary connecting rod 36 on the other clamping assembly are fixed to the side of the support disc 26 away from the elastic bending rod 11 by an auxiliary fixing rod 351, which is used to fix the laser emitter 33 after being rotated around the axis of the rotating support rod 261;

[0043] The movable part is arranged between the elastic bending rod 11 and the support disc 26, and is used to assist the support disc 26 to be guided and moved by the elastic bending rod 11; beneficially, the movable part comprises a rotating wheel 251, the rotating wheel 251 is arranged between the support disc 26 and the elastic bending rod 11, the rotating wheel 251 is a groove wheel structure, the side groove of the rotating wheel 251 abuts against the elastic bending rod 11, a first rotating rod 2511 is arranged on the axis of the rotating wheel 251 and penetrates the rotating wheel 251, a connecting long plate 24 is arranged on both sides of the first rotating rod 2511, an extension plate 25 is arranged between the connecting long plate 24 and the support disc 26, a rotating motor 244 is further arranged on the connecting long plate 24, and the rotating motor 244 is used to drive the first rotating rod 2511 to rotate the rotating wheel 251; sliding transverse grooves 241 are arranged at both ends of the connecting long plate 24, the sliding transverse grooves 241 are axially away from the flexible hanging piece 1, a sliding column 231 is arranged between two groups of opposite sliding transverse grooves 241, the sliding column 231 penetrates and is slidingly connected to the sliding transverse grooves 241, a tension spring 242 is arranged at an end of the sliding transverse groove 241 away from the elastic bending rod 11, the tension spring 242 is fixedly connected to the sliding column 231, a connecting extension block 232 is arranged in the middle of the sliding column 231, a connecting notched ring 23 is arranged on the connecting extension block 232, and the connecting notched ring 23 buckles the elastic bending rod 11 on the periphery side;

[0044] The rotating adjusting part 2 is arranged on one side of the elastic bending rod 11 close to the movable part, and is used to assist the laser welding mechanism 3 to rotate around the central axis of the flexible hanging piece 1;

[0045] Beneficially, the rotating adjusting part 2 comprises two groups of elastic adjusting rods 22, the elastic adjusting rods 22 are arranged on one side of the connecting long plate 24 close to the elastic bending rod 11, the elastic adjusting rods 22 are parallel to the axis of the elastic bending rod 11, rotating rings 21 are further arranged at both ends of the elastic bending rod 11, the rotating rings 21 are rotatably connected to the elastic bending rod 11, movable rolling balls 222 are arranged at both ends of the elastic adjusting rods 22, the movable rolling balls 222 are rollingly connected to the rotating rings 21, the elastic adjusting rods 22 penetrate and are slidingly connected to the adjacent movable rolling balls 222, the push springs 221 are arranged between the rotating rings 21 and the ends of the elastic adjusting rods 22 and are penetrated by the elastic adjusting rods 22, the adjusting knobs 211 are arranged on one side of the rotating ring 21 close to the holding handle 14, the connecting sliding blocks 243 are arranged in the middle of the connecting long plate 24, and the elastic adjusting rods 22 penetrate and are slidingly connected to the connecting sliding blocks 243.

[0046] In the implementation, the rotating ring 21 can be rotated by adjusting the adjusting knob 211, and the elastic adjusting rods 22 between the rotating rings 21 are rotated along the axis of the flexible hanging piece 1 when the rotating ring 21 rotates. Since the laser emitter 33 is far away from the welding area, only a small adjustment is needed to achieve a large range of welding point movement. That is, the elastic adjusting rods 22 drive the laser emitter 33 on the laser welding mechanism 3 to rotate. Since the elastic bending rod 11 is bent, the rotation of the rotating ring 21 causes the two groups of elastic adjusting rods 22 to rotate, resulting in different lengths between the two rotating rings 21. By pressing the thrust spring 221 and the rolling ball 222, the angle between the elastic adjusting rods 22 and the rotating ring 21 is adjusted, so that the length of the elastic adjusting rod 22 between the rotating rings 21 is adjusted, better matching the support of the laser welding mechanism 3, and the problem of welding point deviation when the elastic bending rod 11 is bent too much or bent too much is solved.

[0047] Beneficially, the middle axis of the elastic bending rod 11 is provided with a elastic middle rod 13. Since the structure of the elastic bending rod 11 is prone to sagging under the action of gravity when mounted on the equipment, the elastic middle rod 13 with supporting property is inserted to greatly avoid sagging. The elastic middle rod 13 is inserted and slidingly connected to the elastic bending rod 11, and the elastic bending rod 11 is provided with a holding handle 14 at both ends, which is convenient for holding.

[0048] Beneficially, the laser welding mechanism 3 is also provided with an auxiliary part 4, which is used to supplement welding materials, such as connecting metals, etc. It is a general laser welding technology, so it is not described here. The auxiliary part 4 includes a sliding long rod 41, a through hole 321 is provided on the fixed plate 32, the sliding long rod 41 penetrates and slidingly connects to the through hole 321, a rotating fixed nail 322 is provided on one side of the fixed plate 32, the rotating fixed nail 322 penetrates the through hole 321 and abuts against the sliding long rod 41, one end of the sliding long rod 41 away from the blocking end of the laser emitter 33 is provided with a movable plate 43, the movable plate 43 and the fixed plate 32 are provided with a pushing spring 42 penetrated by the sliding long rod 41, one end of the movable plate 43 is provided with a connecting plate 431, the middle of the connecting plate 431 is provided with a material pipe 432, and the axis of the connecting plate 431 intersects with one point of the ray of the laser emitter 33; the connecting plate 431 is also provided with a fixed side plate 433, the middle of the material pipe 432 is provided with an arc-shaped notch groove 4321, the fixed side plate 433 is provided with a third rotating rod 44, the middle of the third rotating rod 44 is provided with a friction wheel 45, the friction wheel 45 is rotatingly connected to the third rotating rod 44, the friction wheel 45 and the fixed side plate 433 are provided with a torsion spring 441 penetrated by the third rotating rod 44, one tangent direction of the friction wheel 45 is parallel to the axis of the material pipe 432, and the friction wheel 45 penetrates into the arc-shaped notch groove 4321, which is convenient for abutting and conveying materials.

[0049] In implementation, first rotate the friction wheel 45 for several turns, then pass the metal strip through the tube of the feeding pipe 432 so that the end of the metal strip is connected to the welding point and the intersection of the laser emission, and then during the movement of the laser welding mechanism 3, the rotation of the torsion spring 441 drives the friction wheel 45 to rub the metal strip in the feeding pipe 432 through the arc-shaped cutting slot 4321 to complete the addition and real-time transportation of the solder, effectively reducing the welding difficulty.

[0050] Beneficially, the connecting plate 431 is also provided with an observation device 46, such as a camera, a polarizing lens, etc., as long as the observation of the welding point can be realized to facilitate the control of the device.

[0051] The implementation method of the present application is as follows:

[0052] The operator first attaches the elastic bending rod 11 to the required welding surface, pulls the holding handle 14 to make the elastic bending rod 11 periphery side attach to the required welding surface to the maximum extent, similar to a rope, then rotates the connecting screw 37 to make the main clamping plate 35 and the auxiliary clamping plate 361 clamped and fixed under the guidance of the mushroom protrusion 362; the laser emitter 33 ray is perpendicular to the axis of the supporting disc 26, and the welding line of the laser welding mechanism 3 is adjusted by rotating the elastic bending rod 11 to directly shoot the welding point, forming a guide rail structure for the movement of the laser welding mechanism 3; due to the structure of the bending groove 12 on the elastic bending rod 11, the bending expansion at the bending part of the flexible hanging piece 1 can be reduced when attaching to the surface, so that the surface is not deformed to a greater extent, and then welding can be performed.

[0053] Start the welding device, and continue to start the rotating motor 244 during welding to make the rotating motor 244 drive the rotating wheel 251 to rotate, which drives the connecting notch ring 23 to slide on the elastic bending rod 11; since the sliding column 231 connected by the connecting extension block 232 on the connecting notch ring 23 is arranged in the sliding transverse groove 241, when the elastic bending rod 11 is bent inward or outward, the sliding column 231 can also be pulled by the sliding transverse groove 241 to adjust the distance between the connecting notch ring 23 and the connecting long plate 24, and the sliding column 231 can also drive the connecting notch ring 23 to swing along the axis of the sliding column 231 to better attach to the elastic bending rod 11 and prevent the laser welding mechanism 3 from falling off the flexible hanging piece 1; at the same time, the elastic adjusting rod 22 pulls the connecting sliding block 243 on the connecting long plate 24 to make the rotating wheel 251 always attach to the elastic bending rod 11, so that the device can be normally mounted on the elastic bending rod 11; through the above operation, the laser emitter 33 can be welded along the guide rail by the movement of the rotating wheel 251, which simplifies the welding process and difficulty;

[0054] Through the above process in the welding, part of the area such as the broken line welding along the track welding, due to the flexible hanging piece 1 can not completely match the surface, so that the laser emitter 33 welding offset, in order to avoid the emergence of the above situation, can be through the adjustment of the dial dial block 211 rotation rotating ring 21, in the rotating ring 21 rotation caused by the rotation of the elastic adjusting rod 22 along the flexible hanging piece 1 axis rotation, due to the laser emitter 33 away from the welding area, only need to fine tuning can realize a larger range of welding point movement, that is, the elastic adjusting rod 22 driven by the laser welding mechanism 3 on the laser emitter 33 rotation, due to the elastic bending rod 11 in the bending, at this time the rotation of the rotating ring 21 two groups of elastic adjusting rod 22 rotation caused by the length between the two rotating ring 21, through the extrusion of the spring 221 and the rolling ball 222 rolling steering adjusting elastic adjusting rod 22 between the angle of the rotating ring 21 cooperation, so that the elastic adjusting rod 22 adjusting the length between the rotating ring 21, to achieve better matching to the support of the laser welding mechanism 3, when the elastic bending rod 11 in the bending too large or bending too large, the problem of welding point offset.

[0055] Due to the need for part of the welding to add other metal for repair welding, first of all, the friction wheel 45 is rotated several times, and the metal strip is connected to the welding point at the end of the metal strip through the pipe in the material pipe 432 and the intersection of the laser emission. After that, the laser welding mechanism 3 can be moved in the process, and the rotation of the torsion spring 441 can drive the friction wheel 45 to complete the addition and real-time transportation of the solder by frictioning the metal strip in the material pipe 432 through the arc-shaped notch slot 4321, effectively reducing the welding difficulty. At the same time, by adjusting the extrusion of the spring 42 to adjust the position of the sliding long rod 41 on the fixed plate 32, and then fixed by rotating the fixed nail 322, the effect of not affecting the welding quality due to the distance during laser welding is realized, the movement of the welding point is realized, and different welding areas are adapted.

[0056] At the same time, in order to realize the end connection welding of the two groups of pipe materials, when using the above method, the fixed plate 32 on the extension rod 34 is rotated along the rotating support rod 261, so that the laser emitter 33 emitting point is placed vertically on the matching plane. After that, the connecting screw 37 is rotated to make the second group of main clamping plates 35 and auxiliary clamping plates 361 continue to be clamped by the guide action of the mushroom protrusion 362, so that the welding can be continued by using the above method, effectively solving the end connection of the two groups of pipe materials. At the same time, the observation device 46 can better observe the welding effect or assist in welding by using the camera.

[0057] In the description of the application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" and the like should be understood broadly, for example, can be fixedly connected, can be detachably connected, or integrally connected; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0058] The above is only an example and description of the structure of the application. Those skilled in the art of the application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, as long as they do not deviate from the structure of the application or exceed the scope defined by the claims.

Claims

1. A connecting device for steel structures, characterized in that: Comprising A flexible pendant (1) comprising an elastic bending rod (11), a plurality of bending grooves (12) are arranged on both sides of the middle part of the elastic bending rod (11), and the bending grooves (12) on both sides are arranged in a staggered and linear array; A laser welding mechanism (3) comprising a support disc (26), a rotating support rod (261) is symmetrically arranged on both sides of the support disc (26), a laser emitter (33) is arranged on the side of the support disc (26) away from the elastic bending rod (11), the emission direction of the laser emitter (33) is perpendicular to the axis of the support disc (26), a rotating part is arranged between the laser emitter (33) and the support disc (26) to rotate the laser emitter (33) around the central axis of the rotating support rod (261), and a movable part is arranged between the support disc (26) and the elastic bending rod (11) to assist the movement of the support disc (26) guided by the elastic bending rod (11); A rotating adjusting part (2) is arranged on the side of the elastic bending rod (11) close to the movable part to assist the rotation of the laser welding mechanism (3) around the central axis of the flexible pendant (1); The rotating part comprises a fixed plate (32), the laser emitter (33) is fixedly connected to the middle part of the fixed plate (32), an extension rod (34) is arranged on both sides of the fixed plate (32), a second rotating rod (31) is arranged on the end of the extension rod (34) away from the fixed plate (32), the axis of the second rotating rod (31) is parallel to the fixed plate (32), and the end of the second rotating rod (31) close to the support disc (26) is rotatably connected to the rotating support rod (261); The movable part comprises a rotating wheel (251), the rotating wheel (251) is arranged between the support disc (26) and the elastic bending rod (11), the rotating wheel (251) has a groove wheel structure, the side groove of the rotating wheel (251) abuts against the elastic bending rod (11), a first rotating rod (2511) is arranged on the axis of the rotating wheel (251), the first rotating rod (2511) is arranged on both sides of the rotating wheel (251), a connecting long plate (24) is arranged between the first rotating rod (2511) and the support disc (26), a rotating motor (244) is further arranged on the connecting long plate (24), and the rotating motor (244) is used to drive the first rotating rod (2511) to rotate the rotating wheel (251). The rotating adjusting part (2) comprises two groups of elastic adjusting rods (22), which are arranged on one side of the connecting long plate (24) close to the elastic bending rod (11), and are parallel to the axis of the elastic bending rod (11). The two ends of the elastic bending rod (11) are also arranged on the rotating ring (21), which is rotatably connected to the elastic bending rod (11). The two ends of the elastic adjusting rod (22) are provided with movable rolling balls (222), which are rollingly connected to the rotating ring (21). The elastic adjusting rod (22) penetrates and slidingly connects the adjacent movable rolling ball (222). The rotating ring (21) and the end of the elastic adjusting rod (22) are provided with a thrust spring (221) penetrated by the elastic adjusting rod (22). The side of the rotating ring (21) close to the holding handle (14) is provided with an adjusting knob (211). The middle part of the connecting long plate (24) is provided with a connecting sliding block (243), and the elastic adjusting rod (22) penetrates and slidingly connects the connecting sliding block (243).

2. A connecting device for steel structures according to claim 1, characterized in that: The middle axis of the elastic bending rod (11) is provided with a elastic middle rod (13), which penetrates and slidingly connects the elastic bending rod (11). The two ends of the elastic bending rod (11) are provided with a holding handle (14).

3. A connecting device for steel structures according to claim 2, characterized in that: The rotating part further comprises two groups of clamping assemblies, which comprise a main clamping plate (35), an auxiliary connecting rod (36), an auxiliary clamping plate (361) and a connecting screw (37). The main clamping plate (35) on one clamping assembly is vertically and fixedly connected to the support disc (26). The auxiliary clamping plate (361) is arranged on one side of the main clamping plate (35), and cooperates with the main clamping plate (35) to clamp the laser emitter (33). The auxiliary connecting rod (36) is arranged on one side of the main clamping plate (35) and is fixed to the support disc (26). The auxiliary connecting rod (36) is fixed to the support disc (26) on one side of the auxiliary connecting rod (36) fixed to the support disc (26). The auxiliary connecting rod (36) is provided with a mushroom protrusion (362) at one end, which penetrates and slidingly connects one side of the auxiliary clamping plate (361). The guide direction of the mushroom protrusion (362) is the same as the direction of the auxiliary clamping plate (361) clamping the laser emitter (33). The connecting screw (37) connects the auxiliary clamping plate (361) and the main clamping plate (35). The main clamping plate (35) and the auxiliary connecting rod (36) on the other clamping assembly are fixed to the support disc (26) away from the elastic bending rod (11) by an auxiliary fixing rod (351), so as to fix the laser emitter (33) after rotating around the axis of the rotating support rod (261).

4. A connecting device for steel structures according to claim 3, characterized in that: Both ends of the connecting long plate (24) are provided with sliding transverse grooves (241) axially away from the flexible hanging piece (1), two groups of opposite sliding transverse grooves (241) are provided with sliding columns (231), the sliding columns (231) penetrate and slide connect the sliding transverse grooves (241), one end of the sliding transverse grooves (241) away from the elastic bending rod (11) is provided with a tension spring (242), the tension spring (242) is fixedly connected to the sliding column (231), the middle of the sliding column (231) is provided with a connecting extension block (232), the connecting extension block (232) is provided with a connecting notch ring (23), and the connecting notch ring (23) buckles the outer peripheral side of the elastic bending rod (11).

5. The connecting device for steel structures according to claim 3, characterized in that: The laser welding mechanism (3) is further provided with an auxiliary part (4) for supplementing welding auxiliary materials, the auxiliary part (4) comprises a sliding long rod (41), the fixed plate (32) is provided with a through hole (321), the sliding long rod (41) penetrates and slide connects the through hole (321), one side of the fixed plate (32) is provided with a rotating fixed nail (322), the rotating fixed nail (322) penetrates the through hole (321) and abuts against the sliding long rod (41), one end of the sliding long rod (41) away from the laser emitter (33) is provided with a movable plate (43), the movable plate (43) and the fixed plate (32) are provided with a pushing spring (42) penetrated by the sliding long rod (41), one end of the movable plate (43) is provided with a connecting plate (431), the middle of the connecting plate (431) is provided with a material pipe (432), and the axis of the connecting plate (431) intersects with a point of the laser emitter (33).

6. A connecting device for steel structures according to claim 5, characterized in that: The connecting plate (431) is further provided with a fixed side plate (433), the middle of the material pipe (432) is provided with an arc-shaped notch groove (4321), the fixed side plate (433) is provided with a third rotating rod (44), the middle of the third rotating rod (44) is provided with a friction wheel (45), the friction wheel (45) is rotatably connected to the third rotating rod (44), the friction wheel (45) and the fixed side plate (433) are provided with a torsion spring (441) penetrated by the third rotating rod (44), one tangent direction of the friction wheel (45) is parallel to the axis of the material pipe (432), and the friction wheel (45) penetrates into the arc-shaped notch groove (4321).

7. A connecting device for steel structures according to claim 6, characterized in that: The connecting plate (431) is further provided with an observation device (46), and the observation device (46) is used to observe the welding point.

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