Steel plate welding auxiliary splicing device

Abstract

The utility model relates to the technical field of splicing plate, disclose a kind of steel plate welding auxiliary splicing device, to solve the problem of steel structure field splicing welding height difference deviation, alignment precision is low and difficult to adapt stress change, core is to guarantee splicing steel plate quality by residual stress data adjusting device, device contains the bottom plate with base, top surface is fixedly connected two symmetrical L-shaped fixed plate for placing splicing steel plate;L-shaped fixed plate two sides are equipped with electric push cylinder, cooperation clamping block and so on cooperation clamping adjusting assembly, can drive steel plate horizontal alignment, strain gauge on clamping block is connected with external device, real-time transmission residual stress data;Cross slide and slider of L-shaped fixed plate drive side edge clamping plate, slider bottom is cooperated with meshing gear through rectangular bar, rack plate, combined with driving motor, bevel gear and form synchronous clamping adjusting assembly, can adjust clamping force according to stress data.

Description

Technical Field

[0001] This utility model relates to the field of splicing plate technology, and in particular to a steel plate welding auxiliary splicing device. Background Technology

[0002] In the field of steel structure engineering, the accuracy of steel structure layout and processing, the control of factory alignment, and the quality of on-site splicing are crucial to ensuring the overall structural safety. This is especially true in the construction of large steel structures such as bridges and factories, where steel beams and plates need to be spliced ​​and welded on temporary on-site supports. After welding, residual stress is generated in the weld zone, significantly reducing the plasticity of the steel structure connections, weakening the overall load-bearing capacity, and even leading to deformation or brittle fracture risks during later use. Therefore, the accuracy control and residual stress monitoring of the steel plate splicing and welding process are of significant engineering importance.

[0003] There are significant technical shortcomings in existing on-site steel structure splicing and welding operations: First, when components are transported to the site for splicing, height deviations in the steel plates to be spliced ​​are easily caused by factors such as installation errors of temporary supports and deformation during component transportation. If this deviation is not effectively eliminated, it will directly affect the subsequent welding accuracy. Second, the alignment of spliced ​​steel plates currently relies heavily on manual operation, which is not only inefficient but also makes it difficult to ensure the flatness and coaxiality of the spliced ​​surfaces. This can lead to further exacerbation of residual deformation after welding due to initial alignment errors, causing problems such as steel beam tilting and unstable structural connections. In addition, existing operating methods cannot make real-time corrections to the splicing position or welding process based on changes in residual stress, making it difficult to fundamentally solve the construction quality risks caused by welding residual stress and insufficient splicing accuracy. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a steel plate welding auxiliary splicing device, which aims to improve the problems of existing steel structure on-site splicing and welding operations that are prone to height difference deviations, difficulty in ensuring the flatness and coaxiality of the splicing surface, and inability to cope with residual stress changes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a steel plate welding auxiliary splicing device, comprising a base plate, two L-shaped fixing plates symmetrically distributed along the length of the base plate being fixedly attached to the top surface of the base plate, a steel plate to be spliced ​​being placed on the top of any L-shaped fixing plate, and a mating clamping adjustment assembly being installed on the opposite sides of the two L-shaped fixing plates, the mating clamping adjustment assembly being used to drive the two steel plates to be spliced ​​to move horizontally to achieve splicing alignment, and a strain gauge for monitoring the welding residual stress of the steel plates to be spliced ​​being installed on the mating clamping adjustment assembly; two cross grooves are formed on the top surface of each L-shaped fixing plate, the two cross grooves being symmetrically distributed along the width of the L-shaped fixing plate, a cross slider being slidably disposed in each cross groove, and a side clamping plate being fixedly attached to the top surface of each cross slider; two side clamping plates on the same L-shaped fixing plate... The holding plates are used to clamp the corresponding steel plates to be spliced; short rectangular rods are fixed to the bottom surfaces of the cross slider behind the left L-shaped fixing plate and the cross slider in front of the right L-shaped fixing plate, and a second rack plate is fixed to the bottom end of each short rectangular rod; long rectangular rods are fixed to the bottom surfaces of the cross slider in front of the left L-shaped fixing plate and the cross slider behind the right L-shaped fixing plate, and a first rack plate is fixed to the bottom end of each long rectangular rod; a meshing gear is meshed between each first rack plate and the corresponding second rack plate, and a rotating shaft is fixed to the middle of each meshing gear. Each rotating shaft passes through and rotatably mounts on the corresponding L-shaped fixing plate; a synchronous clamping adjustment assembly is provided between the two rotating shafts and the base plate. The synchronous clamping adjustment assembly is used to drive the two rotating shafts to rotate synchronously, and through the meshing gears, the first rack plate and the second rack plate, the side clamping plate clamps the steel plates to be spliced.

[0006] Preferably, the synchronous clamping adjustment assembly includes a drive motor, a driving bevel gear, and two driven bevel gears; the drive motor runs vertically through and is fixed in the middle of the base plate, and the driving bevel gear is fixed to the power output end of the drive motor; the two driven bevel gears are located on both sides of the driving bevel gear and mesh with the driving bevel gear, and each driven bevel gear is fixed to the bottom end of the corresponding rotating shaft.

[0007] Preferably, the mating clamping adjustment assembly includes an electric push cylinder, a fixed connecting plate, and a mating clamping block; the electric push cylinder extends horizontally through and is fixed to the side wall of the L-shaped fixed plate, the fixed connecting plate is fixed to the telescopic end of the electric push cylinder, the mating clamping block is fixed to the side of the fixed connecting plate facing the steel plate to be spliced, and the strain gauge is installed on the side of the mating clamping block facing the steel plate to be spliced.

[0008] Preferably, a guide rod is arranged parallel to each side of the electric push cylinder. Each guide rod passes through and slides on the side wall of the L-shaped fixed plate in a horizontal direction, and the end of each guide rod near the fixed connecting plate is fixedly connected to the fixed connecting plate to limit the movement trajectory of the fixed connecting plate.

[0009] Preferably, the clamping block is provided with a beveled surface on the side facing the steel plate to be spliced, the beveled surface is adapted to the side of the steel plate to be spliced, and a plurality of processing clamping grooves are evenly provided on the beveled surface, the processing clamping grooves extending along the length direction of the beveled surface.

[0010] Preferably, both the first rack plate and the second rack plate are arranged in a horizontal direction, and the tooth surfaces of the first rack plate and the second rack plate on both sides of the same meshing gear are opposite to each other, so as to ensure that when the meshing gear rotates, it can drive the first rack plate and the second rack plate to move in opposite directions.

[0011] Preferably, a triangular reinforcing plate is fixed between each of the side clamping plates and the corresponding cross slider, and the two right-angled sides of the triangular reinforcing plate are respectively attached and fixed to the side surface of the side clamping plate and the top surface of the cross slider.

[0012] Preferably, the strain gauge is connected to an external data acquisition device via a wire to transmit the monitored residual stress data to the external data acquisition device.

[0013] Preferably, a plurality of clamping grooves are evenly provided on the opposite sides of the two side clamping plates on the same L-shaped fixing plate. The extending direction of the clamping grooves is consistent with the length direction of the steel plate to be spliced, which is used to increase the friction between the side clamping plates and the steel plate to be spliced.

[0014] Preferably, a base is fixed at each of the four corners of the bottom surface of the base plate to support the base plate and keep the device level.

[0015] This utility model has the following beneficial effects:

[0016] 1. This utility model provides a unified horizontal support benchmark for the steel plates to be spliced ​​by symmetrically distributed L-shaped fixing plates on the top surface of the base plate. Combined with the base, this ensures the overall levelness of the device, fundamentally avoiding height deviations in the steel plates caused by temporary support errors and component deformation during transportation, thus laying the foundation for subsequent welding accuracy. Furthermore, the electric push cylinder of the clamping and adjusting assembly drives the horizontal movement of the steel plates to be spliced, achieving automated and precise alignment. This significantly improves alignment efficiency while effectively ensuring the flatness and coaxiality of the splicing surface, preventing initial alignment errors from exacerbating residual welding deformation. In addition, strain gauges installed on the clamping blocks monitor the residual stress of the steel plates during welding in real time and transmit the data to external acquisition equipment. Workers can then adjust the splicing position or welding process in real time based on stress changes, reducing potential construction quality hazards caused by residual stress.

[0017] 2. In this utility model, the synchronous clamping adjustment assembly, through the cooperation of a drive motor, an active bevel gear, and a driven bevel gear, can drive two rotating shafts to rotate synchronously. Then, through the linkage of meshing gears and the first and second rack plates with opposing tooth surfaces, the side clamping plate is driven to move stably along the cross slide groove, realizing synchronous clamping of the steel plates to be spliced. The clamping force is uniform and controllable, avoiding excessive local force that could cause deformation of the steel plate. The triangular reinforcing plate between the side clamping plate and the cross slide block can enhance the load-bearing strength of the clamping structure. The clamping mating groove on its opposite surface can increase the friction with the steel plate, further improving the clamping stability. The guide rods on both sides of the electric push cylinder in the clamping adjustment assembly can limit the movement trajectory of the fixed connecting plate, preventing the mating clamping block from shifting. The beveled surface of the mating clamping block is adapted to the side of the steel plate. The superimposed clamping groove design ensures both clamping fit and adaptability to the clamping requirements of steel plates of different specifications. Attached Figure Description

[0018] Figure 1 This is a front-view three-dimensional connection diagram of the present invention;

[0019] Figure 2 This is a top-view three-dimensional connection diagram of the present invention;

[0020] Figure 3 This is a three-dimensional connection diagram of the synchronous clamping and adjusting component, the side clamping plate and the mating clamping and adjusting component of this utility model.

[0021] Figure 4 This is a three-dimensional connection diagram of the synchronous clamping and adjusting component and the side clamping plate of this utility model;

[0022] Figure 5 This is a three-dimensional cross-sectional structural diagram of the synchronous clamping adjustment component and the cooperating clamping adjustment component of this utility model;

[0023] Figure 6 This is a three-dimensional connection diagram of the clamping and adjusting component of this utility model.

[0024] Legend:

[0025] 1. Base plate; 2. Base; 3. L-shaped fixing plate; 4. Meshing gear; 5. Long rectangular rod; 6. First rack plate; 7. Short rectangular rod; 8. Second rack plate; 9. Rotating shaft; 10. Steel plate to be spliced; 11. Triangular reinforcing plate; 12. Side clamping plate; 13. Matching clamping adjustment assembly; 131. Matching clamping block; 132. Guide rod; 133. Fixing connecting plate; 134. Electric push cylinder; 14. Synchronous clamping adjustment assembly; 141. Driven bevel gear; 142. Driven bevel gear; 143. Drive motor; 15. Cross slide groove; 16. Cross slider. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] Reference Figures 1-6This utility model provides an embodiment of a steel plate welding auxiliary splicing device, comprising a base plate 1, two L-shaped fixing plates 3 symmetrically distributed along the length direction of the base plate 1 fixedly to the top surface of the base plate 1, a steel plate 10 to be spliced ​​placed on the top of any L-shaped fixing plate 3, and a mating clamping adjustment component 13 installed on the opposite side of the two L-shaped fixing plates 3, the mating clamping adjustment component 13 being used to drive the two steel plates 10 to be spliced ​​to move in the horizontal direction to achieve splicing alignment, and a strain gauge (the strain gauge is prior art and will not be described in detail) for monitoring the welding residual stress of the steel plate 10 to be spliced ​​is installed on the mating clamping adjustment component 13; two cross grooves 15 are formed on the top surface of each L-shaped fixing plate 3, the two cross grooves 15 being symmetrically distributed along the width direction of the L-shaped fixing plate 3, a cross slider 16 being slidably arranged in each cross groove 15, and a side clamping plate 12 being fixedly provided on the top surface of each cross slider 16, the two side clamping plates 12 on the same L-shaped fixing plate 3. The corresponding steel plates 10 to be spliced ​​are clamped together; short rectangular rods 7 are fixed to the bottom surfaces of the cross slider 16 behind the left L-shaped fixing plate 3 and the cross slider 16 in front of the right L-shaped fixing plate 3, and a second toothed plate 8 is fixed to the bottom end of each short rectangular rod 7; long rectangular rods 5 are fixed to the bottom surfaces of the cross slider 16 in front of the left L-shaped fixing plate 3 and the cross slider 16 behind the right L-shaped fixing plate 3, and a first toothed plate 6 is fixed to the bottom end of each long rectangular rod 5; each first toothed plate 8... A meshing gear 4 is provided between the strip plate 6 and the corresponding second rack plate 8. A rotating shaft 9 is fixed in the middle of each meshing gear 4. Each rotating shaft 9 passes through and is rotatably mounted on the corresponding L-shaped fixed plate 3. A synchronous clamping adjustment assembly 14 is provided between the two rotating shafts 9 and the base plate 1. The synchronous clamping adjustment assembly 14 is used to drive the two rotating shafts 9 to rotate synchronously. Through the cooperation of the meshing gear 4, the first rack plate 6 and the second rack plate 8, the side clamping plate 12 is driven to clamp the steel plate 10 to be spliced.

[0028] The synchronous clamping adjustment assembly 14 includes a drive motor 143, a driving bevel gear 142, and two driven bevel gears 141. The drive motor 143 extends vertically through and is fixed in the middle of the base plate 1. The driving bevel gear 142 is fixed to the power output end of the drive motor 143. The two driven bevel gears 141 are located on both sides of the driving bevel gear 142 and mesh with it. Each driven bevel gear 141 is fixed to the bottom end of the corresponding rotating shaft 9. The mating clamping adjustment assembly 13 includes an electric push cylinder 134, a fixed connecting plate 133, and a mating clamping block 131. The electric push cylinder 134 extends horizontally through and is fixed to the side wall of the L-shaped fixed plate 3. The fixed connecting plate 133 is fixed to the telescopic end of the electric push cylinder 134. The mating clamping block 131 is fixed to the side of the fixed connecting plate 133 facing the steel plate 10 to be spliced. A strain gauge is installed on the mating clamping block 131. Facing the side of the steel plate 10 to be spliced; a guide rod 132 is arranged parallel to each other on both sides of the electric push cylinder 134. Each guide rod 132 is horizontally inserted and slidably mounted on the side wall of the L-shaped fixed plate 3. The end of each guide rod 132 near the fixed connecting plate 133 is fixedly connected to the fixed connecting plate 133 to limit the movement trajectory of the fixed connecting plate 133. The clamping block 131 is set with a beveled surface facing the side of the steel plate 10 to be spliced. The beveled surface is adapted to the side of the steel plate 10 to be spliced. Several processing clamping grooves are evenly opened on the beveled surface and extend along the length of the beveled surface. The first rack plate 6 and the second rack plate 8 are both set in the horizontal direction. The tooth surfaces of the first rack plate 6 and the second rack plate 8 on both sides of the same meshing gear 4 are opposite to each other to ensure that the first rack plate 6 and the second rack plate 8 can move in opposite directions when the meshing gear 4 rotates.

[0029] Each side clamping plate 12 is fixedly provided with a triangular reinforcing plate 11 between itself and the corresponding cross slider 16. The two right-angled sides of the triangular reinforcing plate 11 are respectively attached to the side of the side clamping plate 12 and the top surface of the cross slider 16. The strain gauge is connected to an external data acquisition device through wires to transmit the monitored residual stress data to the external data acquisition device. Several clamping grooves are evenly provided on the opposite sides of the two side clamping plates 12 on the same L-shaped fixing plate 3. The extension direction of the clamping grooves is consistent with the length direction of the steel plate 10 to be spliced, which is used to increase the friction between the side clamping plate 12 and the steel plate 10 to be spliced. A base 2 is fixed at each of the four corners of the bottom surface of the base plate 1 to support the base plate 1 and keep the overall device level.

[0030] The specific implementation method is as follows: First, the device is initialized and the steel plates 10 to be spliced ​​are placed: confirm that the four bases 2 on the bottom surface of the base plate 1 are placed stably, the electric push cylinder 134 and guide rod 132 of the clamping adjustment component 13 are in the retracted reset state, the drive motor 143 of the synchronous clamping adjustment component 14 is de-energized, and the side clamping plate 12 is in the open state; check that the strain gauges on the non-contact surfaces of each clamping block 131 are firmly attached and connected normally to the external data acquisition equipment; place the two steel plates 10 to be spliced ​​on the top surfaces of the two L-shaped fixing plates 3 respectively, and initially adjust the position of the steel plates so that the edges to be welded are roughly aligned;

[0031] The electric push cylinders 134 on opposite sides of the two L-shaped fixing plates 3 are activated. The telescopic ends of the electric push cylinders 134 extend and drive the mating clamping blocks 131 to move toward the steel plates 10 to be spliced ​​via the fixing connecting plate 133. The left electric push cylinder 134 pushes the left steel plate to the right and the right electric push cylinder 134 pushes the right steel plate to the left to achieve automatic alignment. The guide rods 132 on both sides of the electric push cylinders 134 slide along the L-shaped fixing plates 3 with the fixing connecting plate 133 to prevent displacement. At the same time, the strain gauge monitors the stress of the mating clamping blocks 131 in real time. If the stress rises evenly and stably, the alignment is normal. If the stress changes abruptly, the steel plates need to be fine-tuned. If the stress does not change significantly, the position of the clamping blocks 131 or the state of the strain gauge is checked.

[0032] After the steel plates are aligned, the drive motor 143 on the base plate 1 is started. The drive motor 143 drives the active bevel gear 142 to rotate. The active bevel gear 142 meshes and drives the two driven bevel gears 141 to rotate synchronously in opposite directions. The driven bevel gears 141 drive the corresponding rotating shaft 9 to rotate. The rotating shaft 9 drives the meshing gear 4 to rotate. The meshing gear 4 meshes with the first rack plate 6 and the second rack plate 8 on both sides, causing the first rack plate 6 and the second rack plate 8 to move relative to each other. The long rectangular rod 5 and the short rectangular rod 7 drive the cross slider 16 to slide along the cross groove 15 of the L-shaped fixed plate 3. Finally, the side clamping plate 12 moves closer to the steel plate 10 to be spliced ​​and fits tightly against the side. The clamping grooves on the opposite surfaces of the side clamping plate 12 increase friction, and the triangular reinforcing plate 11 enhances the strength of the clamping plate.

[0033] Finally, welding is performed. During the process, strain gauges continuously monitor the stress of the clamping block 131. If the stress is stable, the operation continues. If the stress fluctuates abnormally, it is determined whether the clamping assembly needs to be fine-tuned. After welding is completed, the strain gauge data acquisition equipment is turned off. The drive motor 143 is started to reverse, and the side clamping plate 12 is opened through the synchronous clamping adjustment assembly 14. The electric push cylinder 134 is started to retract, which drives the clamping block 131 to reset. The welded steel plate is removed from the L-shaped fixed plate 3, and the surface of the device is cleaned.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A steel plate welding auxiliary splicing device, comprising a base plate (1), characterized in that: Two L-shaped fixing plates (3) symmetrically distributed along the length of the base plate (1) are fixed to the top surface of the base plate (1). A steel plate (10) to be spliced ​​is placed on the top of any L-shaped fixing plate (3). A clamping adjustment component (13) is installed on the opposite side of the two L-shaped fixing plates (3). The clamping adjustment component (13) is used to drive the two steel plates (10) to be spliced ​​to move in the horizontal direction to achieve splicing alignment. A strain gauge for monitoring the welding residual stress of the steel plate (10) to be spliced ​​is installed on the clamping adjustment component (13). Each L-shaped fixing plate (3) has two cross grooves (15) on its top surface. The two cross grooves (15) are symmetrically distributed along the width direction of the L-shaped fixing plate (3). Each cross groove (15) has a cross slider (16) slidably disposed in it. Each cross slider (16) has a side clamping plate (12) fixed on its top surface. The two side clamping plates (12) on the same L-shaped fixing plate (3) cooperate to clamp the corresponding steel plate (10) to be spliced. Short rectangular rods (7) are fixed to the bottom surfaces of the cross slider (16) behind the left L-shaped fixing plate (3) and the cross slider (16) in front of the right L-shaped fixing plate (3), and a second rack plate (8) is fixed to the bottom end of each of the short rectangular rods (7); long rectangular rods (5) are fixed to the bottom surfaces of the cross slider (16) in front of the left L-shaped fixing plate (3) and the cross slider (16) behind the right L-shaped fixing plate (3), and a first rack plate (6) is fixed to the bottom end of each of the long rectangular rods (5); each first rack plate (6) and the corresponding second rack Meshing gears (4) are meshed between the plates (8), and a rotating shaft (9) is fixed in the middle of each meshing gear (4). Each rotating shaft (9) passes through and rotates on the corresponding L-shaped fixed plate (3). A synchronous clamping adjustment assembly (14) is provided between the two rotating shafts (9) and the base plate (1). The synchronous clamping adjustment assembly (14) is used to drive the two rotating shafts (9) to rotate synchronously. Through the cooperation of the meshing gears (4), the first rack plate (6) and the second rack plate (8), the side clamping plate (12) is driven to clamp the steel plate (10) to be spliced.

2. The steel plate welding auxiliary splicing device according to claim 1, characterized in that: The synchronous clamping adjustment assembly (14) includes a drive motor (143), an active bevel gear (142), and two driven bevel gears (141). The drive motor (143) runs vertically through and is fixed in the middle of the base plate (1). The active bevel gear (142) is fixed at the power output end of the drive motor (143). The two driven bevel gears (141) are located on both sides of the active bevel gear (142) and mesh with the active bevel gear (142). Each driven bevel gear (141) is fixed to the bottom end of the corresponding rotating shaft (9).

3. The steel plate welding auxiliary splicing device according to claim 1, characterized in that: The mating clamping adjustment assembly (13) includes an electric push cylinder (134), a fixed connecting plate (133), and a mating clamping block (131). The electric push cylinder (134) passes through and is fixed to the side wall of the L-shaped fixed plate (3) in a horizontal direction. The fixed connecting plate (133) is fixed to the telescopic end of the electric push cylinder (134). The mating clamping block (131) is fixed to the side of the fixed connecting plate (133) facing the steel plate (10) to be spliced. The strain gauge is installed on the side of the mating clamping block (131) facing the steel plate (10) to be spliced.

4. The steel plate welding auxiliary splicing device according to claim 3, characterized in that: A guide rod (132) is arranged parallel to each other on both sides of the electric push cylinder (134). Each guide rod (132) is horizontally inserted and slidably disposed on the side wall of the L-shaped fixed plate (3). The end of each guide rod (132) near the fixed connecting plate (133) is fixedly connected to the fixed connecting plate (133) to limit the movement trajectory of the fixed connecting plate (133).

5. The steel plate welding auxiliary splicing device according to claim 3, characterized in that: The clamping block (131) is set with a beveled surface on the side facing the steel plate (10) to be spliced. The beveled surface is adapted to the side of the steel plate (10) to be spliced, and a number of processing clamping grooves are evenly opened on the beveled surface. The processing clamping grooves extend along the length direction of the beveled surface.

6. The steel plate welding auxiliary splicing device according to claim 1, characterized in that: The first rack plate (6) and the second rack plate (8) are both arranged in the horizontal direction, and the tooth surfaces of the first rack plate (6) and the second rack plate (8) on both sides of the same meshing gear (4) are opposite to each other, so as to ensure that the meshing gear (4) can drive the first rack plate (6) and the second rack plate (8) to move in opposite directions when it rotates.

7. The steel plate welding auxiliary splicing device according to claim 1, characterized in that: Each of the side clamping plates (12) is fixed with a triangular reinforcing plate (11) between it and the corresponding cross slider (16). The two right-angled sides of the triangular reinforcing plate (11) are respectively attached to the side of the side clamping plate (12) and the top surface of the cross slider (16).

8. The steel plate welding auxiliary splicing device according to claim 1, characterized in that: The strain gauge is connected to an external data acquisition device via a wire to transmit the monitored residual stress data to the external data acquisition device.

9. The steel plate welding auxiliary splicing device according to claim 1, characterized in that: On the opposite sides of the two side clamping plates (12) on the same L-shaped fixing plate (3), a number of clamping grooves are evenly provided. The extension direction of the clamping grooves is consistent with the length direction of the steel plate (10) to be spliced, which is used to increase the friction between the side clamping plate (12) and the steel plate (10) to be spliced.

10. The steel plate welding auxiliary splicing device according to claim 1, characterized in that: The base plate (1) is fixed at each of the four corners of its bottom surface with a base (2) for supporting the base plate (1) and keeping the device level.

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