Auxiliary device for welding steel components and high-precision welding method

Abstract

The present invention relates to the technical field of steel component welding, and specifically to an auxiliary device for steel component welding and a high-precision welding method. The auxiliary device includes a support table, two groups of clamping mechanisms, an alignment mechanism, a positioning mechanism and a driving mechanism. The two groups of clamping mechanisms are installed on the table, and are respectively used to clamp two groups of steel components to be welded. The alignment mechanism is fixedly connected to the clamping mechanism, and is used to drive the clamping mechanism to move so that the two groups of steel components are aligned to form a weld. The positioning mechanism is used to position the welding device so that the welding point of the welding device is always on the weld. The driving mechanism is used to drive the welding device to move along the weld direction. The present invention can clamp and position the steel components, align the welding positions of the steel components to be welded, prevent the unstable welding or local deformation and weld defects caused by the offset of the steel components during the welding process, and improve the accuracy and aesthetics of the steel component welding.

Description

Technical Field

[0001] The invention relates to the technical field of steel component welding, and in particular to an auxiliary device for steel component welding and a high-precision welding method for steel component welding. Background Art

[0002] In the steel structure manufacturing and construction industry, welding is a core process step, and ensuring the quality of welding directly affects the stability and safety of the structure. Therefore, the design and application of auxiliary devices are particularly important. Existing auxiliary devices for steel structure welding are mainly used to position, fix and support welded parts, but there are some technical defects in actual applications, such as: Low precision: Many existing fixtures and support devices are not accurate enough during use, resulting in excessive welding gaps and inaccurate docking of welded parts, resulting in reduced welding quality. Difficult installation and adjustment: The installation and adjustment process of some auxiliary devices is cumbersome and time-consuming, which not only affects welding efficiency, but also increases the labor intensity of operators. Insufficient stability: During the welding process, when affected by welding heat or other external forces, the existing auxiliary devices sometimes cannot maintain sufficient stability, which can easily lead to accuracy deviations.

[0003] The Chinese invention patent with the publication number of CN107262990B proposes a large linear movable steel component welding device, wherein a second slide rail is installed on the top of the frame, a welding machine part is slidably connected to the second slide rail, the welding machine part is driven by the second driving part to slide back and forth along the second slide rail, a first sliding part is installed on the second slide rail, a second sliding part is installed on the welding machine part, the second sliding part and the first sliding part are slidably matched, a first groove is opened in the first sliding part, a first plate body is installed in the first groove, a plurality of parallel arranged first convex strips are installed on the first plate body, a second groove is formed between two adjacent first convex strips, a plurality of parallel arranged second convex strips are installed on the second slide part, the second convex strip and the second groove are slidably matched, and a spring part is installed in the second convex strip. The present invention prevents the welding machine part from being offset when sliding, thereby improving the welding accuracy of the steel component.

[0004] Although the above invention patent solves the problem that the welding machine is prone to offset during the welding process, the unstable support of the steel structure during welding causes the weld to offset, and during inclined welding, the welding machine has difficulty in uniformly welding the weld during the welding process, which are still problems that need to be solved urgently. Summary of the invention

[0005] Based on this, it is necessary to propose an auxiliary device for steel component welding and a high-precision welding method to address the problems in the existing steel component welding, such as inaccurate welding position, unstable steel component support resulting in low steel component welding quality, and difficulty in uniform welding when the steel component is tilted.

[0006] The present invention is achieved through the following technical solutions: an auxiliary device for welding steel components comprises a support platform, two groups of clamping mechanisms, an alignment mechanism, a positioning mechanism and a driving mechanism.

[0007] The support platform includes a table top and a lifting assembly, and the lifting assembly is used to drive the table top to move up and down.

[0008] Two groups of clamping mechanisms are installed on the table, and are respectively used to clamp two groups of steel components to be welded.

[0009] The alignment mechanism is fixedly connected to the clamping mechanism and is used to drive the clamping mechanism to move so as to align the two groups of steel components to form a weld.

[0010] The positioning mechanism is used to position the welding device so that the welding point of the welding device is always on the weld.

[0011] The driving mechanism is used to drive the welding device to move along the welding seam direction.

[0012] The above-mentioned auxiliary device for welding steel components can clamp and position the steel components, align the welding positions of the steel components to be welded, and prevent the welding from being unstable or causing local deformation and weld defects due to the deviation of the steel components during the welding process. In addition, by limiting the positioning rod and driving the limiting rod to move along the weld direction, the welding point of the welding device is always on the weld, thereby improving the accuracy of steel component welding, and further improving the welding quality and aesthetics of welding.

[0013] Furthermore, the clamping mechanism includes a clamping base and two groups of clamping assemblies. The two groups of clamping assemblies are symmetrically mounted on the clamping base. The clamping assembly includes a fixed bracket, a driving gear, two driven gears 1, two swing arms 1, two swing arms 2 and two clamping rods. The fixed bracket is fixedly connected to the clamping base, and the driving gear is rotatably connected to the fixed bracket. The two driven gears 1 are symmetrically mounted on the fixed bracket. The two driven gears 1 are meshed, and the driving gear is meshed with one of the driven gears 1. One end of the swing arm 1 is fixedly connected to the driven gear 1, and the other end is rotatably connected to one end of the clamping rod. One end of the swing arm 2 is rotatably connected to the fixed bracket, and the other end is rotatably connected to the clamping rod.

[0014] Furthermore, the alignment mechanism includes two reference plates, two rotating rods, an electric telescopic rod and an adjusting rod. The two reference plates are relatively mounted on the table, one end of the rotating rod is slidably connected to the table, and the other end is rotatably connected to the reference plate. Both ends of the electric telescopic rod are respectively fixedly connected to the rotating rod. Both ends of the adjusting rod are respectively rotatably connected to the two clamping mechanisms.

[0015] Furthermore, the positioning mechanism includes a positioning rod, a positioning wheel, two groups of positioning plates, a positioning plate adjustment assembly, an auxiliary wheel group 1 and an auxiliary wheel group 2. One end of the positioning rod is rotatably connected to the table top, and the other end is rotatably connected to the positioning wheel. The two groups of positioning plates are installed on the table top, and the two groups of positioning plates are symmetrically arranged relative to the positioning rod. The positioning plate adjustment assembly is used to adjust the position and direction of the positioning plates so that the two groups of positioning plates are respectively attached to the surfaces of the two groups of steel components.

[0016] Further, the auxiliary wheel set 1 includes a slider 1, a support rod 1, two auxiliary wheels 1, and a fastening assembly 1. The slider 1 is slidably connected to the positioning rod. The support rod 1 passes through the slider 1 and is fixedly connected to the slider 1, and the support rod 1 is vertically arranged with the positioning rod. The two auxiliary wheels 1 are symmetrically mounted at both ends of the support rod 1. The fastening assembly 1 is used to fasten the slider 1 to the positioning rod when the two auxiliary wheels 1 are respectively abutted against the two sets of positioning plates.

[0017] Furthermore, the auxiliary wheel set 2 includes a slider 2, a support rod 2, two auxiliary wheels 2, and a fastening assembly 2. The slider 2 is slidably connected to the positioning rod. The support rod 2 passes through the slider 2 and is fixedly connected to the slider 2, and the support rod 2 is vertically arranged to the positioning rod. The two auxiliary wheels 2 are symmetrically installed at both ends of the support rod 2. The fastening assembly 2 is used to fasten the slider 2 to the positioning rod when the two auxiliary wheels 2 are respectively abutted on the two sets of positioning plates. And the two auxiliary wheels 2 are respectively arranged in parallel with the two auxiliary wheels 1, and the spacing between the two auxiliary wheels 2 is greater than the spacing between the two auxiliary wheels 1.

[0018] Furthermore, the positioning plate comprises a bottom plate and a plurality of movable plates, wherein the plurality of movable plates are arranged in parallel and rotatably connected to the bottom plate.

[0019] Further, the positioning plate adjustment assembly includes a base plate adjustment assembly and a movable plate adjustment assembly. The base plate adjustment assembly includes. The movable plate adjustment assembly includes a center rod, a triangular support rod 1, a triangular support rod 2, a fastening assembly 3, and a fastening assembly 4. The center rod is fixedly connected to the table top. One end of the triangular support rod 1 is slidably connected to the center rod, and the other two ends are rotatably connected to the two base plates respectively. One end of the triangular support rod 2 is slidably connected to the center rod, and the other two ends are rotatably connected to the two base plates respectively. And the length of the triangular support rod 2 is greater than that of the triangular support rod 1. The movable plate adjustment assembly includes two racks, two adjustment gears, and a plurality of driven gears 2. The adjustment gears are rotatably mounted on the center rod. The racks are respectively meshed with the adjustment gears, and the racks are slidably connected to the base plate. The driven gear 2 is rotatably mounted on the movable plate, and the driven gear 2 is meshed with the racks.

[0020] Furthermore, the driving mechanism includes a motor, a gear set, a linear driver and a pressure sensor. The motor is used to drive the positioning wheel to rotate through the gear set. One end of the linear driver is mounted on the positioning rod, and the other end is fixedly connected to the welding device. The pressure sensor is mounted on the auxiliary wheel set 1 or the auxiliary wheel set 2, and is used to detect the pressure signal between the auxiliary wheel set 1 or the auxiliary wheel set 2 and the positioning plate.

[0021] The present invention also provides a high-precision welding method for welding steel components, comprising:

[0022] Move the support table to the position to be welded and fix it.

[0023] Two clamping mechanisms are used to respectively clamp two steel components to be welded.

[0024] The positions of the two clamping mechanisms are adjusted by the alignment mechanism so that the positions of the two steel components are aligned.

[0025] The welding device is positioned by using a positioning mechanism so that the welding point of the welding device is always located on the welds of the two steel components.

[0026] The driving mechanism drives the welding device to move at a uniform speed along the direction of the weld, so that the welding device welds evenly on the weld.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The auxiliary device for welding steel components of the present invention can clamp and position the steel components, align the welding positions of the steel components to be welded, and prevent the welding from being unstable or causing local deformation and weld defects due to the deviation of the steel components during the welding process. In addition, by limiting the positioning rod and driving the limiting rod to move along the weld direction, the welding point of the welding device is always on the weld, thereby improving the accuracy of steel component welding, and further improving the welding quality and aesthetics of welding.

[0029] The present invention drives one of the adjusting gears to rotate, thereby causing the two adjusting gears to rotate relative to each other, thereby driving the two racks to move simultaneously, thereby causing multiple driven gears 2 to rotate synchronously. Among them, the driven gears 2 in the same movable plate rotate in the same direction, and the driven gears 2 in the two movable plates rotate in the opposite direction, thereby causing the movable plates installed on the two bottom plates to rotate relative to each other. The movable plates are synchronously adjusted by the movable plate adjustment assembly, which not only makes the direction of the movable plate more convenient for supporting and guiding the auxiliary wheel group 1 and the auxiliary wheel group 2, but also improves the adjustment efficiency of the movable plate. In addition, the rack can be fixed by locking the adjusting gear, thereby limiting the movable plate and improving the stability of the movable plate support.

[0030] The driving mechanism of the present invention drives the positioning wheel to move at a uniform speed along the direction of the weld by a motor, so that the welding device also moves along the welding direction. The welding device is driven to move in the direction of the weld by a linear driver, so that the welding point of the welding device is directly opposite to the weld, thereby achieving uniform welding of the steel structure and effectively improving the welding accuracy and welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a schematic diagram of the three-dimensional structure of the auxiliary device for welding steel components in Example 1 of the present invention;

[0032] Figure 2 for Figure 1 Schematic diagram of the partial three-dimensional structure of the auxiliary device for welding of steel components;

[0033] Figure 3 for Figure 1 Schematic diagram of the three-dimensional structure of the clamping mechanism;

[0034] Figure 4 for Figure 1 A schematic diagram of the three-dimensional structure of the clamping mechanism and the alignment mechanism;

[0035] Figure 5 for Figure 1 A schematic diagram of the partial three-dimensional structure of the positioning mechanism;

[0036] Figure 6 for Figure 1 Schematic diagram of the partial three-dimensional structure of the positioning mechanism from another perspective.

[0037] In the figure: 1, support table; 11, table top; 12, lifting assembly; 2, clamping mechanism; 21, base; 22, clamping assembly; 221, fixed bracket; 222, driving gear; 223, driven gear 1; 224, swing arm 1; 225, swing arm 2; 226, clamping rod; 3, alignment mechanism; 31, reference plate; 32, rotating rod; 33, electric telescopic rod; 35, adjustment rod; 4, positioning mechanism; 41, positioning rod; 42, positioning wheel; 43, positioning plate; 431, bottom plate; 432, movable plate; 44, positioning plate adjustment assembly; 441, bottom plate adjustment Section assembly; 4411, center rod; 4412, triangular support rod one; 4413, triangular support rod two; 4414, fastening assembly three; 4415, fastening assembly four; 442, movable plate adjustment assembly; 4421, rack; 4422, adjustment gear; 4423, driven gear two; 45, auxiliary wheel set one; 451, slider one; 452, support rod one; 453, auxiliary wheel one; 454, fastening assembly one; 46, auxiliary wheel set two; 461, slider two; 462, support rod two; 463, auxiliary wheel two; 464, fastening assembly two; 5, driving mechanism. DETAILED DESCRIPTION

[0038] 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.

[0039] It should be noted that when a component is referred to as being "mounted on" another component, it may be directly on the other component or there may be a central component. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a central component at the same time. When a component is considered to be "fixed to" another component, it may be directly fixed on the other component or there may be a central component at the same time.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present invention belongs. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "or / and" used herein includes any and all combinations of one or more of the related listed items.

[0041] Example 1: Please refer to Figure 1-Figure 6 This embodiment provides an auxiliary device for welding steel components, which is used to support two groups of steel components to be welded and drive the welding device to move to achieve welding of the steel components. The auxiliary device includes: a support platform 1, two groups of clamping mechanisms 2, an alignment mechanism 3, a positioning mechanism 4 and a driving mechanism 5.

[0042] The support table 1 includes a table top 11 and a lifting component 12, and the lifting component 12 is used to drive the table top 11 to move up and down. The table top 11 can be made of steel, aluminum alloy, steel-wood composite material, ceramic plate, etc. This embodiment uses a steel table top 11, which has high strength and heat resistance, and can withstand large-volume and large-mass steel components and high-temperature pressure generated during welding. In this embodiment, the table top 11 includes a plane for supporting or standing and a boss for installing the positioning mechanism 4 and the driving mechanism 5. The lifting component 12 can be a scissor-type lift, a hydraulic lift, a gear or chain lift, etc. In this embodiment, a scissor-type lift is used, which not only has a wide range of adjustable heights, but also has a stable support, providing stable support for precise welding.

[0043] Two groups of clamping mechanisms 2 are installed on the table 11, and are respectively used to clamp two groups of steel components to be welded. The clamping mechanism 2 includes a clamping base 21 and two groups of clamping assemblies 22. The two groups of clamping assemblies 22 are symmetrically installed on the clamping base 21. The clamping assembly 22 includes a fixed bracket 221, a driving gear 222, two driven gears 1 223, two swing arms 1 224, two swing arms 225 and two clamping rods 226. The fixed bracket 221 is fixedly connected to the clamping base 21, and the driving gear 222 is rotatably connected to the fixed bracket 221. The two driven gears 1 223 are symmetrically installed on the fixed bracket 221. The two driven gears 1 223 are meshed, and the driving gear 222 is meshed with one of the driven gears 1 223. One end of the swing arm 1 224 is fixedly connected to the driven gear 1 223, and the other end is rotatably connected to one end of the clamping rod 226. One end of the second swing arm 225 is rotatably connected to the fixed bracket 221 , and the other end is rotatably connected to the clamping rod 226 .

[0044] In the actual welding process, the driving gear 222 is rotated to drive the two driven gears 1 223 to rotate synchronously in the opposite direction. Since the swing arm 1 224, the swing arm 225 and the clamping rod 226 together form a parallel four-bar linkage structure, the driven gear 1 223 drives the two swing arms 1 224 and the two swing arms 225 to rotate synchronously when rotating, so that the two clamping rods 226 rotate synchronously to open or tighten. Figure 2 As shown, when the driving gear 222 is rotated clockwise, the two clamping rods 226 can be driven to be tightened synchronously and firmly clamped on the steel component.

[0045] The alignment mechanism 3 is fixedly connected to the clamping mechanism 2, and is used to drive the clamping mechanism 2 to move so that the two groups of steel components are aligned to form a weld. After the two clamping mechanisms 2 clamp the two steel components respectively, the positions of the clamping mechanisms 2 are adjusted by the alignment mechanism 3 so that the two clamping mechanisms 2 are positioned relative to each other, and then the two groups of steel components are positioned relative to each other, and the positions to be welded of the two groups of steel components are mutually attached to form a weld.

[0046] The alignment mechanism 3 includes two reference plates 31, two rotating rods 32 and an adjusting rod 35. The two reference plates 31 are relatively mounted on the table 11, the two clamping bases 21 are respectively fixedly connected to the reference plates 31, and the clamping direction of the clamping mechanism 2 is perpendicular to the direction of the two reference plates 31. One end of the rotating rod 32 is slidably connected to the table 11, and the other end is rotatably connected to the reference plate 31. The two ends of the electric telescopic rod 33 are respectively fixedly connected to the rotating rod 32. The two ends of the adjusting rod 35 are respectively rotatably connected to the two clamping mechanisms 2.

[0047] In the actual welding process, after the two clamping mechanisms 2 clamp the steel components respectively, the two rotating rods 32 are driven to approach each other by the electric telescopic rod 33, so that the two reference plates 31 fit each other, and the contact edges of the two reference plates 31 are set as curved surfaces or special shapes, so as to guide the reference plates 31 and the clamping mechanisms 2, so that the two clamping mechanisms 2 are in the same direction, and then the two steel components are positioned relative to each other, so as to achieve the preliminary positioning of the steel components. Subsequently, the spacing between the two clamping mechanisms 2 is driven by the adjustment rod 35 to align the welding positions of the two steel components. In other embodiments, a lifting assembly 12 can also be installed between one of the clamping bases 21 and the reference plate 31, so that the heights of the two clamping bases 21 are different, which is convenient for adjusting the angle between the two steel components.

[0048] The positioning mechanism 4 is used to position the welding device so that the welding point of the welding device is always located on the weld.

[0049] The positioning mechanism 4 includes a positioning rod 41, a positioning wheel 42, two groups of positioning plates 43, a positioning plate adjustment assembly 44, an auxiliary wheel group 1 45 and an auxiliary wheel group 2 46. One end of the positioning rod 41 is rotatably connected to the table 11, and the other end is rotatably connected to the positioning wheel 42. The two groups of positioning plates 43 are installed on the table 11, and the two groups of positioning plates 43 are symmetrically arranged relative to the positioning rod 41. The positioning plate adjustment assembly 44 is used to adjust the position and direction of the positioning plates 43 so that the two groups of positioning plates 43 are respectively attached to the surfaces of the two groups of steel components. The positioning plates 43 include a bottom plate 431 and a plurality of movable plates 432. The plurality of movable plates 432 are arranged in parallel and rotatably connected to the bottom plate 431.

[0050] The positioning plate adjustment assembly 44 includes a bottom plate adjustment assembly 441 and a movable plate adjustment assembly 442. The bottom plate adjustment assembly 441 is used to adjust the positions of the two bottom plates 431 so that the two bottom plates 431 fit the two steel members respectively. The movable plate adjustment assembly is used to adjust a plurality of movable plates 432 so that the plurality of movable plates 432 rotate synchronously and the movable plates 432 on the two bottom plates 431 rotate in opposite directions. The bottom plate adjustment assembly 441 includes a center rod 4411, a triangular support rod 1 4412, a triangular support rod 2 4413, a fastening assembly 3 4414, and a fastening assembly 4 4415. The center rod 4411 is fixedly connected to the table 11. One end of the triangular support rod 1 4412 is slidably connected to the center rod 4411, and the other two ends are rotatably connected to the two bottom plates 431 respectively. One end of the triangular support rod 2 4413 is slidably connected to the center rod 4411, and the other two ends are rotatably connected to the two bottom plates 431 respectively. Furthermore, the length of the second triangular support rod 4413 is greater than that of the first triangular support rod 4412 .

[0051] During the actual welding process, first loosen the fastening components three 4414 and the fastening components four 4415, and move the triangular support rod one 4412 and the triangular support rod two 4413 downward along the direction of the center rod 4411, respectively, until the two ends of the bottom of the triangular support rod one 4412 and the triangular support rod two 4413 respectively abut against the bottom plate 431, so that the two bottom plates 431 are completely fitted on the two steel components, and then lock the fastening components three 4414 and the fastening components four 4415 to adjust and fix the position of the bottom plate 431.

[0052] The movable plate adjustment assembly 442 includes two racks 4421, two adjustment gears 4422, and a plurality of driven gears 4423. The adjustment gears 4422 are rotatably mounted on the center rod 4411. The racks 4421 are respectively meshed with the adjustment gears 4422, and the racks 4421 are slidably connected to the bottom plate 431. The driven gears 4423 are respectively rotatably mounted on the movable plate 432, and the driven gears 4423 are meshed with the racks 4421.

[0053] In the actual welding process, by driving one of the adjusting gears 4422 to rotate, the two adjusting gears 4422 are relatively rotated, and then the two racks 4421 are driven to move at the same time, so that the multiple driven gears 4423 are synchronously rotated. Among them, the driven gears 4423 in the same movable plate 432 rotate in the same direction, and the driven gears 4423 in the two movable plates 432 rotate in the opposite direction, so that the movable plates 432 installed on the two bottom plates 431 rotate relatively. The movable plate 432 is synchronously adjusted by the movable plate adjustment assembly 442, which not only makes the direction of the movable plate 432 more convenient for supporting and guiding the auxiliary wheel group 1 45 and the auxiliary wheel group 2 46, but also improves the adjustment efficiency of the movable plate 432. In addition, the rack 4421 can be fixed by locking the adjusting gear 4422, and then the movable plate 432 is limited, thereby improving the stability of the support of the movable plate 432.

[0054] Auxiliary wheel set 1 45 includes a slider 1 451, a support rod 1 452, two auxiliary wheels 1 453, and a fastening assembly 1 454. Slider 1 451 is slidably connected to positioning rod 41. Support rod 1 452 passes through slider 1 451 and is fixedly connected to slider 1 451, and support rod 1 452 is vertically arranged to positioning rod 41. Two auxiliary wheels 1 453 are symmetrically mounted at both ends of support rod 1 452. Fastening assembly 1 454 is used to fasten slider 1 451 to positioning rod 41 when the two auxiliary wheels 1 453 are respectively abutted against two groups of positioning plates 43. Auxiliary wheel set 2 46 includes slider 2 461, support rod 2 462, two auxiliary wheels 2 463, and fastening assembly 2 464. Slider 2 461 is slidably connected to positioning rod 41. Support rod 2 462 passes through slider 2 461 and is fixedly connected to slider 2 461, and support rod 2 462 is vertically arranged to positioning rod 41. The two auxiliary wheels 2 463 are symmetrically mounted at both ends of the support rod 2 462. The fastening assembly 2 464 is used to fasten the slider 2 461 to the positioning rod 41 when the two auxiliary wheels 2 463 are respectively abutted against the two sets of positioning plates 43. The two auxiliary wheels 2 463 are respectively arranged parallel to the two auxiliary wheels 1 453, and the spacing between the two auxiliary wheels 2 463 is greater than the spacing between the two auxiliary wheels 1 453.

[0055] Auxiliary wheel set 1 45 and auxiliary wheel set 2 46 can position the positioning rod 41 so that the direction of the positioning rod 41 is just on the bisecting plane of the two steel component surfaces and perpendicular to the weld, so that the welding point always falls on the weld during the welding process. Specifically, taking auxiliary wheel set 1 45 as an example, by adjusting the position of slider 1 451, the two auxiliary wheels 1 453 are respectively abutted on the two positioning plates 43 and are between the two movable plates 432 at the same position, so that the slider 1 451 is just on the bisecting plane of the two steel component surfaces, and under the limit of the movable plate 432, the side of the auxiliary wheel 1 453 is always perpendicular to the side of the bottom plate 431, so that the direction of the positioning wheel 42 can be limited. Similarly, auxiliary wheel set 2 46 can position the positioning rod 41 at different positions so that the positioning rod 41 is on the bisecting plane of the two steel component surfaces as a whole, and finally determines that the welding position can fall on the weld. In other embodiments, in order to ensure that the direction of the positioning rod 41 does not deviate, the number of auxiliary wheels 1 453 and 2 463 can be set to be more, for example, set to four, so that the positioning rod 41 can be more stable and prevent the positioning rod 41 from deflecting along the weld direction. In addition, springs can be installed between auxiliary wheels 1 453 and 2 463 and support rods 1 452 and 2 462 to adjust the pressure of auxiliary wheel set 1 45 and auxiliary wheel set 2 46, and prevent the auxiliary wheels 1 453 and 2 463 from being damaged due to excessive friction.

[0056] The driving mechanism 5 is used to drive the welding device to move along the direction of the weld. The driving mechanism 5 includes a motor, a gear set, a linear drive and a pressure sensor. The motor is used to drive the positioning wheel 42 to rotate through the gear set. One end of the linear drive is mounted on the positioning rod 41, and the other end is fixedly connected to the welding device. The pressure sensor is mounted on the auxiliary wheel set 1 45 or the auxiliary wheel set 2 46, and is used to detect the pressure signal between the auxiliary wheel 1 453 or the auxiliary wheel set 2 46 and the positioning plate 43. Specifically, the motor drives the positioning wheel 42 to move at a uniform speed along the direction of the weld through the gear set, so that the welding device also moves along the welding direction, and drives the welding device to move in the direction of the weld through the linear drive, so that the welding point of the welding device is directly opposite to the weld, so as to achieve uniform welding of the steel component. In other embodiments, a handheld welding device can also be used for welding, for example, a slide for mounting the welding device is set on the positioning rod 41, and the operator can hold the welding device and press down the welding device to achieve welding of two steel components.

[0057] The auxiliary device for welding steel components of this embodiment can clamp and position the steel components, align the welding positions of the steel components to be welded, and prevent the welding from being unstable or causing local deformation and weld defects due to the deviation of the steel components during the welding process. In addition, by limiting the positioning rod 41 and driving the limiting rod to move along the weld direction, the welding point of the welding device is always on the weld, thereby improving the accuracy of steel component welding, and further improving the welding quality and aesthetics of welding.

[0058] Embodiment 2: This embodiment provides a high-precision welding method for steel component welding, which can be applied to the auxiliary device for steel component welding in Embodiment 1 to achieve high-precision welding of steel components. The welding method includes the following steps:

[0059] Move the support platform 1 to the position to be welded and fix it. The support platform 1 has a fixed support and a universal wheel support. When moving, the universal wheel is driven to move down until the fixed support is higher than the universal wheel, so as to facilitate the pushing of the support platform 1. After the support platform 1 is moved to the preset position, the universal wheel can be folded up and supported by the fixed support, so as to position the support platform 1. Under the gravity of the support platform 1, the welding process can be kept stable.

[0060] Two clamping mechanisms 2 are used to respectively clamp two steel components to be welded.

[0061] The positions of the two clamping mechanisms 2 are adjusted by the alignment mechanism 3 to align the positions of the two steel members. Under the action of the alignment mechanism 3 and the clamping mechanism 2, not only the directions of the two steel members can be adjusted, but also the spacing between the two steel members can be adjusted. When different welding methods are used, corresponding spacing can be reserved to improve the welding quality.

[0062] The positioning mechanism 4 is used to position the welding device so that the welding point of the welding device is always located on the weld seam of the two steel components.

[0063] The driving mechanism 5 drives the welding device to move at a uniform speed along the direction of the weld, so that the welding device welds evenly on the weld.

[0064] The driving mechanism 5 and the positioning mechanism 4 jointly adjust the position and movement trajectory of the welding device so that the welding point always falls on the weld.

[0065] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0066] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An auxiliary device for welding steel components, used to support two groups of steel components to be welded and drive the welding device to move to achieve welding of the steel components, characterized in that: The auxiliary device comprises: A support platform, comprising a table top and a lifting assembly, wherein the lifting assembly is used to drive the table top to move upward and downward; Two sets of clamping mechanisms are installed on the table, and are respectively used to clamp two sets of steel components to be welded; An alignment mechanism is fixedly connected to the clamping mechanism and is used to drive the clamping mechanism to move so that the two groups of steel components are aligned to form a weld; the alignment mechanism includes two reference plates, two rotating rods, an electric telescopic rod and an adjusting rod; the two reference plates are relatively mounted on the table, one end of the rotating rod is slidably connected to the table, and the other end is rotatably connected to the reference plate; both ends of the electric telescopic rod are respectively fixedly connected to the rotating rod; and both ends of the adjusting rod are respectively rotatably connected to the two clamping mechanisms; A positioning mechanism is used to position the welding device so that the welding point of the welding device is always on the weld; the positioning mechanism includes a positioning rod, a positioning wheel, two groups of positioning plates, a positioning plate adjustment assembly, an auxiliary wheel group 1 and an auxiliary wheel group 2; one end of the positioning rod is rotatably connected to the table, and the other end is rotatably connected to the positioning wheel; two groups of positioning plates are installed on the table, and the two groups of positioning plates are symmetrically arranged relative to the positioning rod; the positioning plate adjustment assembly is used to adjust the position and direction of the positioning plates so that the two groups of positioning plates are respectively attached to the surfaces of the two groups of steel components; The auxiliary wheel set 1 comprises a slider 1, a support rod 1, two auxiliary wheels 1, and a fastening assembly 1; the slider 1 is slidably connected to the positioning rod; the support rod 1 passes through the slider 1 and is fixedly connected to the slider 1, and the support rod 1 is vertically arranged with the positioning rod; the two auxiliary wheels 1 are symmetrically mounted at both ends of the support rod 1; the fastening assembly 1 is used to fasten the slider 1 to the positioning rod when the two auxiliary wheels 1 are respectively abutted against the two groups of positioning plates; The positioning plate includes a bottom plate and a plurality of movable plates; the plurality of movable plates are arranged in parallel and rotatably connected to the bottom plate; The positioning plate adjustment assembly includes a base plate adjustment assembly and a movable plate adjustment assembly; the base plate adjustment assembly includes a center rod, a triangular support rod 1, a triangular support rod 2, a fastening assembly 3, and a fastening assembly 4; the center rod is fixedly connected to the table top; one end of the triangular support rod 1 is slidably connected to the center rod, and the other two ends are rotatably connected to the two base plates respectively; one end of the triangular support rod 2 is slidably connected to the center rod, and the other two ends are rotatably connected to the two base plates respectively; and the length of the triangular support rod 2 is greater than that of the triangular support rod 1; the movable plate adjustment assembly includes two racks, two adjusting gears, and a plurality of driven gears 2; the adjusting gears are rotatably mounted on the center rod; the racks are respectively meshed with the adjusting gears, and the racks are slidably connected to the base plate; the driven gear 2 is rotatably mounted on the movable plate, and the driven gear 2 is meshed with the rack; The driving mechanism is used to drive the welding device to move along the welding seam direction.

2. The auxiliary device for steel member welding according to claim 1, characterized in that: The clamping mechanism includes a clamping base and two groups of clamping assemblies; the two groups of clamping assemblies are symmetrically installed on the clamping base; the clamping assembly includes a fixed bracket, a driving gear, two driven gears 1, two swing arms 1, two swing arms 2 and two clamping rods; the fixed bracket is fixedly connected to the clamping base, and the driving gear is rotatably connected to the fixed bracket; the two driven gears 1 are symmetrically installed on the fixed bracket; the two driven gears 1 are meshed, and the driving gear is meshed with one of the driven gears 1; one end of the swing arm 1 is fixedly connected to the driven gear 1, and the other end is rotatably connected to one end of the clamping rod; one end of the swing arm 2 is rotatably connected to the fixed bracket, and the other end is rotatably connected to the clamping rod.

3. The auxiliary device for steel member welding according to claim 1, characterized in that: The auxiliary wheel group 2 includes a slider 2, a support rod 2, two auxiliary wheels 2, and a fastening assembly 2; the slider 2 is slidably connected to the positioning rod; the support rod 2 passes through the slider 2 and is fixedly connected to the slider 2, and the support rod 2 is vertically arranged to the positioning rod; the two auxiliary wheels 2 are symmetrically installed at both ends of the support rod 2; the fastening assembly 2 is used to fasten the slider 2 to the positioning rod when the two auxiliary wheels 2 are respectively abutted on the two groups of positioning plates; and the two auxiliary wheels 2 are respectively arranged in parallel with the two auxiliary wheels 1, and the spacing between the two auxiliary wheels 2 is greater than the spacing between the two auxiliary wheels 1.

4. The auxiliary device for welding steel components according to claim 1, characterized in that: The driving mechanism includes a motor, a gear set, a linear driver and a pressure sensor; the motor is used to drive the positioning wheel to rotate through the gear set; one end of the linear driver is installed on the positioning rod, and the other end is fixedly connected to the welding device; the pressure sensor is installed on the auxiliary wheel set one or the auxiliary wheel set two, and is used to detect the pressure signal between the auxiliary wheel set one or the auxiliary wheel set two and the positioning plate.

5. A high-precision welding method for steel component welding, which is applied to an auxiliary device for steel component welding as claimed in any one of claims 1 to 4, characterized in that: The welding method comprises: Move the support table to the position to be welded and fix it; Two clamping mechanisms are used to respectively clamp two steel components to be welded; Adjust the positions of the two clamping mechanisms by an alignment mechanism so that the positions of the two steel components are aligned; The welding device is positioned by using a positioning mechanism so that the welding point of the welding device is always located on the welds of the two steel components; The driving mechanism drives the welding device to move at a uniform speed along the direction of the weld, so that the welding device can weld evenly on the weld.

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