Welding auxiliary device for automatic forming of steel plate cutting weld groove

Abstract

The welding auxiliary device comprises a guide rail, a cantilever and a rotating shaft, the guide rail is sleeved with a sliding sleeve, a connecting sleeve is connected to the upper portion of the sliding sleeve in an up-down sliding mode, and a vertical plate is fixedly connected to the outer wall of the connecting sleeve through a connecting arm; and one end of the cantilever is rotationally connected with the bottom of the vertical plate up and down. A vertical plate, a cantilever, a telescopic driver, a sliding block, a rotating shaft and a grinding wheel are arranged, one end of the cantilever is rotationally connected with the bottom of the vertical plate, the rotating shaft is connected to the cantilever through the sliding block, the rotating shaft is connected to the bottom of the vertical plate, one end of the rotating shaft is connected with the grinding wheel, and the telescopic driver is used for controlling the cantilever to swing up and down; by means of the arrangement, the device can directly conduct groove forming treatment on two aligned steel plates on a welding platform, a welding machine can directly conduct filler welding on formed grooves, manual grinding treatment is not needed, and the butt welding efficiency of the steel plates is greatly improved.

Description

Technical Field

[0001] This invention relates to the field of steel plate welding, and more particularly to a welding auxiliary device for automatically forming weld bevels in steel plate cutting. Background Technology

[0002] When splicing and welding steel plates, a welding machine and a welding platform are required. During the splicing and welding process, two steel plates are placed flat on the welding platform, and then one side of the two steel plates is brought together and fixed on the welding platform. Then, the welding machine is used to weld the butt joint of the two steel plates. In order to ensure the strength of the connection between the two steel plates after welding, the steel plates need to be beveled before welding. The greater the thickness of the steel plate, the deeper the bevel needs to be.

[0003] Currently, beveling steel plates typically involves manually grinding one end of a single steel plate using a grinder. After grinding, two plates are aligned and a bevel is formed at their joint. A welding machine is then used to filler the bevel. However, manually beveling thicker (harder) steel plates is time-consuming and laborious, and the resulting bevel is often irregular, affecting the weld strength. Existing technology includes equipment that directly beveles two butt-jointed steel plates. This equipment uses a single grinding wheel, requiring multiple reciprocating motions to complete the beveling process, resulting in low efficiency.

[0004] Therefore, this invention proposes a welding auxiliary device for automatically forming weld bevels in steel plate cutting. Summary of the Invention

[0005] The purpose of this invention is to provide a welding auxiliary device for automatically forming weld bevels in steel plate cutting in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: A welding auxiliary device for automatically forming weld bevels in steel plate cutting includes a guide rail, a cantilever, and a rotating shaft. A sliding sleeve is fitted on the guide rail, and a connecting sleeve is slidably connected above the sliding sleeve. A vertical plate is fixedly connected to the outer wall of the connecting sleeve via a connecting arm. One end of the cantilever is rotatably connected to the bottom of the vertical plate. At least three sliders are provided on the cantilever, distributed along its length. The sliders are elastically slidably connected to the cantilever, and the sliding direction is along the length of the cantilever. A rotating shaft is provided through the sliders and the bottom of the vertical plate. A grinding wheel is detachably connected to one end of the rotating shaft. All grinding wheels located on the front side of the cantilever are coplanar, and their outer diameter gradually increases backward along the length of the cantilever. The cantilever is rotatably connected to one side of the vertical plate via a telescopic actuator.

[0007] As a further description of the above technical solution: A slide rail is provided through one side of the cantilever, and the slider is slidably disposed in the slide rail. Adjacent sliders are connected by springs, and the end of the slide rail near the vertical plate is also connected to the adjacent slider by springs.

[0008] As a further description of the above technical solution: The number of rotating shafts is four, and a passive pulley is fixedly connected to the other end of each shaft. A passive pulley is also rotatably connected to the back of the cantilever via a fixed shaft. The fixed shaft is located near the bottom of the vertical plate. A motor is fixedly connected to the front of the vertical plate near the top. An active pulley is also fixedly connected to the output shaft of the motor. The active pulley is connected to the passive pulley via a transmission belt. A tensioning pulley adapted to the transmission belt is connected to one side of the vertical plate via a support arm.

[0009] As a further description of the above technical solution: The tensioning wheel includes a support shaft, a support pulley, and a spring. A positioning plate is fixedly connected to one side of the support arm. The support shaft is disposed through the surface of the positioning plate and the two are slidably connected. A connecting plate is fixedly connected to one end of the support shaft. A positioning shaft that is rotatably connected to the support pulley is fixedly connected to one side of the connecting plate. A baffle is fixedly connected to the other end of the support shaft. The spring is sleeved on the support shaft and located between the baffle and the positioning plate.

[0010] As a further description of the above technical solution: The slider is fixedly connected to two ends with a limiting shaft one sleeved in the support spring, and the slide rail is fixedly connected to one end near the vertical plate with a limiting shaft two sleeved in the support spring.

[0011] As a further description of the above technical solution: The front side of the vertical plate is rotatably connected to a base near the middle. The telescopic actuator is an electric push rod and is fixedly connected to one side of the base. The output shaft end of the telescopic actuator is rotatably connected to one side of the cantilever.

[0012] As a further description of the above technical solution: A protective cover is detachably connected to the front side of the cantilever. The grinding wheel is located inside the protective cover and extends downward from the bottom of the protective cover. A dust collection box is fixedly connected to the top wall of the protective cover, and an air inlet pipe is fixedly connected to the rear end of the protective cover.

[0013] As a further description of the above technical solution: The top wall of the sliding sleeve is fixedly connected to a guide post fitted inside the connecting sleeve. The top of the guide post is fixedly connected to a mounting plate. The top of the mounting plate is fixedly connected to a second motor. The output shaft of the second motor is fixedly connected to a lead screw. The outer wall of the connecting sleeve is fixedly connected to a first threaded sleeve fitted outside the lead screw via a connecting rod.

[0014] As a further description of the above technical solution: The guide rail is fixedly connected to two end support plates, and a base plate is fixedly connected to the bottom end of the support plates. A suspension plate is fixedly connected to one side of the sliding sleeve, and a threaded sleeve II is fixedly connected to the bottom of the suspension plate. A drive shaft is threaded through the threaded sleeve II and screwed into the threaded sleeve II. A vertical plate is fixedly connected to the top of the base plate and rotatably connected to one end of the drive shaft. One side of one of the vertical plates is fixedly connected to an output shaft and a motor III that is fixedly connected to one end of the drive shaft.

[0015] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In this invention, a vertical plate, a cantilever, a telescopic driver, a slider, a rotating shaft, and a grinding wheel are provided. One end of the cantilever is rotatably connected to the bottom of the vertical plate. A rotating shaft is connected to the cantilever via a slider. A rotating shaft is connected to the bottom of the vertical plate. One end of the rotating shaft is connected to a grinding wheel. The telescopic driver is used to control the up-and-down swing of the cantilever. This configuration allows the device to directly perform beveling processing on two aligned steel plates on a welding platform, enabling the welding machine to directly perform filler welding on the formed bevel. This not only eliminates the need for manual grinding but also greatly improves the efficiency of butt welding of steel plates.

[0016] 2. In this invention, the row of sliders on the cantilever is elastically sliding. When the cantilever swings down, it drives the row of grinding wheels on it to swing down and perform beveling and grinding on the butt joint of the two steel plates. Each grinding wheel grinds a certain amount of material, meaning that the grinding operations of each grinding wheel do not interfere with each other. Therefore, when the sliding sleeve moves at a certain speed, the flatness of the beveling can be guaranteed. In addition, because the sliders have the function of elastic sliding, they can adaptively move to protect against overload when the grinding wheels are overloaded, thus ensuring the safety of the grinding operation of this device.

[0017] 3. In this invention, a protective cover is set above a row of grinding wheels, and a dust collection box is set on the top of the protective cover. The dust collection box and the protective box are connected. When the dust collection box generates suction, it can absorb the dust generated by the grinding wheels to avoid dust pollution. Then, an air inlet pipe is fixedly connected to the rear end of the protective box. After the air is introduced through the pipe, it can blow air onto the formed bevel, which has the function of cleaning the bevel, thereby ensuring the quality of the weld after welding. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the welding auxiliary device for automatically forming weld bevels in steel plate cutting, as proposed in this invention. Figure 2 for Figure 1 A schematic diagram of the bottom structure; Figure 3 for Figure 1 Rear structural diagram; Figure 4 for Figure 3 A magnified structural diagram of the central "a" section; Figure 5 for Figure 3 A magnified structural diagram of the central "b" section; Figure 6 for Figure 3 A magnified structural diagram of the central "c" shape; Figure 7 This is a schematic diagram of the tensioning wheel of a welding auxiliary device for automatic beveling of steel plate weld seams proposed in this invention; Figure 8 for Figure 1 A schematic diagram of the disassembled protective shield. Figure 9 for Figure 8 A schematic diagram of the structure on the back.

[0019] Legend: 1. Guide rail; 11. Support plate; 111. Base plate; 1111. Vertical plate; 2. Sliding sleeve; 21. Guide post; 211. Mounting plate; 22. Suspension plate; 221. Threaded sleeve II; 3. Connecting sleeve; 31. Threaded sleeve I; 4. Vertical plate; 41. Support plate; 411. Positioning plate; 5. Cantilever; 51. Slide rail; 511. Limiting shaft II; 52. Fixed shaft; 6. Rotating shaft; 7. Slider; 71. Limiting shaft I; 8. Grinding wheel; 9. Telescopic actuator; 101. Support spring; 102. 103 Passive pulley; 1031 Drive pulley; 104 Transmission belt; 105 Machine base; 106 Tensioner pulley; 1061 Support shaft; 10611 Connecting plate; 106111 Positioning shaft; 10612 Baffle; 1062 Support pulley; 1063 Spring; 107 Motor II; 1071 Lead screw; 108 Motor III; 109 Protective cover; 1091 Dust collection box; 1092 Air inlet pipe; 110 Transmission shaft. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1 Please see Figure 1-9 A welding auxiliary device for automatically forming weld bevels in steel plate cutting includes a guide rail 1, a cantilever 5, and a rotating shaft 6. The guide rail 1 supports the device. A sliding sleeve 2 is fitted on the guide rail 1. A connecting sleeve 3 is slidably connected above the sliding sleeve 2. In a specific implementation, a guide post 21 fitted inside the connecting sleeve 3 is fixedly connected to the top wall of the sliding sleeve 2. The guide post 21 and the connecting sleeve 3 are slidably connected. A mounting plate 211 is fixedly connected to the top of the guide post 21. A second motor 107 is fixedly connected to the top of the mounting plate 211. A lead screw 1071 is fixedly connected to the output shaft of the second motor 107. A first threaded sleeve 31 fitted outside the lead screw 1071 is fixedly connected to the outer wall of the connecting sleeve 3 through a connecting rod. The second motor 107 provides driving force to the rotation of the lead screw 1071. The second motor 107 is a servo motor. When the lead screw 1071 rotates, it can drive the first threaded sleeve 31 to move up and down by rotation, which in turn drives the connecting sleeve 3 to move up and down relative to the sliding sleeve 2.

[0022] A vertical plate 4 is fixedly connected to the outer wall of the connecting sleeve 3 via a connecting arm. One end of the cantilever 5 is rotatably connected to the bottom of the vertical plate 4. Specifically, a sleeve is fixedly connected to the bottom end of the vertical plate 4, and a connecting hole is provided at one end of the cantilever 5, which is fitted onto the outside of the sleeve. A bearing is provided between the connecting hole and the sleeve. At least three sliders 7 are provided on the cantilever 5, which are distributed along its length. The sliders 7 and the cantilever 5 are elastically slidably connected, and the sliding direction is along the length of the cantilever 5. In a preferred embodiment, a slide rail 51 is provided through one side of the cantilever 5, and the sliders 7 are slidably disposed in the slide rail 51. The sliders 7 and the slide rail 51 are slidably connected, and adjacent sliders 7 are connected by a support spring 101. The end of the slide rail 51 near the vertical plate 4 is also connected to the adjacent slider 7 by a support spring 101. The support spring 101 allows the sliders 7 to slide elastically within the slide rail 51.

[0023] A rotating shaft 6 is provided through the slider 7 and the bottom of the vertical plate 4. In specific implementation, a limiting hole is provided in the middle of the slider 7 and sleeved outside the rotating shaft 6. A bearing is provided between the limiting hole and the rotating shaft 6. The sleeve at the bottom of the vertical plate 4 is sleeved outside the rotating shaft 6 and a bearing is provided between the sleeve and the rotating shaft 6. A grinding wheel 8 is detachably connected to one end of the rotating shaft 6. The outer circumference of the grinding wheel 8 is V-shaped. This V-shape can directly bevel two spliced ​​steel plates. All grinding wheels 8 located on the front side of the cantilever 5 are coplanar and their outer diameter gradually increases backward along the length of the cantilever 5. During manufacturing, the height of the grinding wheels 8 can be adjusted by the up-and-down swing of the cantilever 5. When the bottoms of all the grinding wheels 8 are collinear, the cantilever 5 is in an upward tilt relative to the plane. When all the grinding wheels 8 are grinding sequentially, the cantilever 5 is still in an upward tilt relative to the horizontal plane. The upward tilt angle is controlled within the range of 5-8 degrees. This tilt state allows the grinding wheels 8 on the cantilever 5 to have an adaptive movement compensation function. The grinding of all the grinding wheels 8 on the cantilever 5 does not interfere with each other. At the same time, it has the function of overload protection for the grinding wheels 8. That is, when a certain grinding wheel 8 on the cantilever 5 is overloaded, it will move backward and upward under the action of resistance, thereby reducing the grinding resistance. Thus, one sliding stroke of the sliding sleeve 2 on the guide rail 1 can enable all the grinding wheels 8 to perform beveling and grinding on the two mating steel plates.

[0024] In this embodiment, the two ends of the slider 7 are fixedly connected to a limiting shaft 71 sleeved in the support spring 101, and the end of the slide 51 near the vertical plate 4 is fixedly connected to a limiting shaft 511 sleeved in the support spring 101. The setting of the limiting shaft 71 ensures that there is a minimum distance between adjacent sliders 7. This minimum distance ensures that the grinding wheels 8 corresponding to adjacent sliders 7 will not collide or interfere with each other. Specifically, when adjacent sliders 7 approach each other, the opposite ends of the limiting shaft 71 on them will abut against each other. This setting has the function of anti-collision protection for the grinding wheels 8.

[0025] Among them, the cantilever 5 is rotatably connected to one side of the vertical plate 4 through the telescopic actuator 9, and the function of the telescopic actuator 9 is to control the vertical plate 4 to swing up and down.

[0026] Specifically, the front side of the vertical plate 4 is rotatably connected to the base 105 near the middle. Specifically, a rod shaft is fixedly connected to one side of the vertical plate 4, and a positioning sleeve fitted outside the rod shaft is fixedly connected to the front side of the vertical plate 4. The positioning sleeve and the rod shaft are rotatably connected. The telescopic actuator 9 is an electric push rod and is fixedly connected to one side of the base 105. This electric push rod adopts a structure with servo control function. The output shaft end of the telescopic actuator 9 is rotatably connected to one side of the cantilever 5. Specifically, an ear plate is fixedly connected to one side of the cantilever 5, and a connecting shaft that is rotatably connected to the output shaft end of the telescopic actuator 9 is fixedly connected to one side of the ear plate. When the telescopic actuator 9 is activated, it can control the cantilever 5 to swing up and down.

[0027] In this embodiment, a protective cover 109 is detachably connected to the front side of the cantilever 5. Specifically, a flange is welded to one end of the aforementioned connecting shaft, and a threaded hole is opened on the back of the protective cover 109, which is opposite to the mounting hole on the flange. The flange and the protective cover 109 can be fixedly connected by using screws. The grinding wheel 8 is located inside the protective cover 109 and extends downward from the bottom of the protective cover 109. The screws are removed, and then the protective cover 109 is lifted to remove it. The function of the protective cover 109 is to prevent dust generated during grinding by the grinding wheel 8 from splashing. A dust collection box 1091 is fixedly connected to the top wall of the protective cover 109. The function of the dust collection box 1091 is to suck away the dust inside the protective cover 109. In specific implementation, multiple adapter pipes are fixedly connected to the top wall of the dust collection box 1091, and then the multiple adapter pipes are connected to a multi-port pipe through a corrugated pipe. Then, one port of the multi-port pipe is connected to the negative pressure dust removal pipeline through a pipeline.

[0028] The protective cover 109 is fixedly connected to an air inlet pipe 1092 at its rear end. The function of the air inlet pipe 1092 is to spray air into the protective cover 109, specifically into the formed bevel groove. The purpose is to blow out the residue in the formed bevel groove. The blown-out residue will be directly sucked away by the dust collection box 1091. When in use, the air inlet pipe 1092 is connected to an external air supply pipeline with a certain air pressure through a hose.

[0029] In this embodiment, the grinding wheel 8 is a beveled wheel with a coaxial positioning groove on one side. The positioning groove has through holes distributed around it. One end of the rotating shaft 6 is fixedly connected to a disc that fits into the positioning groove. The disc has threaded holes that are opposite to the through holes. The grinding wheel 8 can be fixedly connected to the disc by bolts. The grinding wheel 8 can be removed after the bolts are removed, which makes the grinding wheel 8 easy to replace.

[0030] In this embodiment, there are four rotating shafts 6, and a passive pulley 102 is fixedly connected to the other end of each shaft. The back of the cantilever 5 is also rotatably connected to the passive pulley 102 via a fixed shaft 52. The fixed shaft 52 is located near the bottom of the vertical plate 4. A motor 103 is fixedly connected to the front of the vertical plate 4 near the top. The output shaft of the motor 103 is also fixedly connected to an active pulley 1031. The active pulley 1031 is connected to the passive pulley 102 via a transmission belt 104. The outer diameter of each passive pulley 102 can be the same or different (determined according to the speed requirement of the corresponding grinding wheel 8). A tensioning wheel 106 adapted to the transmission belt 104 is connected to one side of the vertical plate 4 via a support arm 41. The function of the tensioning wheel 106 is to tension the transmission belt 104. When the motor 103 starts, it can drive the transmission belt 104 to rotate via the active pulley 1031.

[0031] The tensioning wheel 106 includes a support shaft 1061, a support pulley 1062, and a spring 1063. A positioning plate 411 is fixedly connected to one side of the support arm 41. The support shaft 1061 is slidably connected to the surface of the positioning plate 411. A connecting plate 10611 is fixedly connected to one end of the support shaft 10611. A positioning shaft 106111, which is rotatably connected to the support pulley 1062, is fixedly connected to one side of the connecting plate 10611. A baffle 10612 is fixedly connected to the other end of the support shaft 1061. The spring 1063 is sleeved on the support shaft 1061 and located between the baffle 10612 and the positioning plate 411. The spring 1063 applies an axial elastic thrust to the support shaft 1061 through the baffle 10612. The support shaft 1061 drives the support pulley 1062 to press against the outer wall of the transmission belt 104. The spring 1063 ensures that the transmission belt 104 remains taut when the slider 7 slides. In this embodiment, support plates 11 are fixedly connected to both ends of the guide rail 1, and a base plate 111 is fixedly connected to the bottom end of the support plate 11. Mounting holes are provided on the base plate 111. The base plate is mounted on the steel plate welding workbench via mounting bolts and mounting holes. The welding workbench is a steel plate support platform in the intelligent welding system. The intelligent welding system includes an automatic or semi-automatic arc welding machine or other related welding equipment that is movably connected to the welding workbench. When the automatic or semi-automatic arc welding machine moves, it can weld two steel plates together. A suspension plate 22 is fixedly connected to one side of the sliding sleeve 2, and a threaded sleeve 221 is fixedly connected to the bottom of the suspension plate 22. A through sleeve 221 passes through the threaded sleeve 221. A drive shaft 110 is provided, which is screwed and connected to a threaded sleeve 221. A vertical plate 1111 is fixedly connected to the top of the base plate 111 and rotatably connected to one end of the drive shaft 110. A motor 108, which is fixedly connected to one end of the drive shaft 110, is fixedly connected to one side of the vertical plate 1111. The motor 108 is a servo motor and provides driving force to the rotation of the drive shaft 110. When the drive shaft 110 rotates, it can indirectly drive the sliding sleeve 2 to move along the guide rail 1 through the threaded sleeve 221. By adjusting the rotation speed of the drive shaft 110, the movement speed of the sliding sleeve 2 can be controlled, and thus the movement speed of the grinding wheel 8 can be adjusted.

[0032] Working principle: Before use, the transmission shaft 110 is rotated to bring the grinding wheel 8 close to one side of the welding worktable, while ensuring that the cantilever 5 is in an upward tilted state, so that the height of the bottom of the row of grinding wheels 8 increases sequentially from front to back. Two steel plates to be joined are placed on the welding worktable, and then the opposite sides of the two steel plates are aligned and abutted, ensuring that the butt joint of the two steel plates is located on the vertical surface of the grinding wheel 8. The two steel plates are then pressed and fixed using the clamping tool on the welding worktable. Based on the thickness of the steel plates and the height of the bevel, the motor 107 is controlled to rotate, driving the lead screw 1071 to rotate. Under the drive of the lead screw 1071, the connecting sleeve 3 descends, causing the vertical plate 4 to descend. As the vertical plate 4 descends, it causes the grinding wheels 8 below it to descend to a certain distance below the top surface of the steel plate. This distance is the first layer forming depth of the bevel. Then... The telescopic actuator 9 controls the cantilever 5 to swing down at a certain angle, so that the bottom height of the grinding wheel 8 is lower than the bottom height of the grinding wheel 8 in front of it. Thus, the foremost grinding wheel 8 on the cantilever 5 is the second bevel forming grinding station, and the two grinding wheels 8 behind it are the third and fourth bevel forming grinding stations. Then, the drive shaft 110 is controlled to rotate, and the sliding sleeve 2 of the threaded sleeve 221 moves along the guide rail 1. When the grinding wheel 8 below the vertical plate 4 contacts one end of the gap between the two mating steel plates, the first layer of bevel depth is formed. As the grinding wheel 8 continues to move, the subsequent grinding wheels 8 will perform sequential groove widening processing on the bevel, and then form a complete bevel. During the grinding process, the grinding wheels 8 on the cantilever 5 use the elastic force of the support spring 101 to enable each grinding wheel 8 to complete the processing of the corresponding bevel depth.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A welding auxiliary device for automatic beveling of weld seams in steel plate cutting, comprising a guide rail (1), a cantilever (5), and a rotating shaft (6), characterized in that, A sliding sleeve (2) is fitted on the guide rail (1). A connecting sleeve (3) is slidably connected above the sliding sleeve (2). A vertical plate (4) is fixedly connected to the outer wall of the connecting sleeve (3) through a connecting arm. One end of the cantilever (5) is rotatably connected to the bottom of the vertical plate (4). At least three sliders (7) are provided on the cantilever (5) along its length direction. The sliders (7) and the cantilever (5) are elastically slidably connected and the sliding direction is along the length direction of the cantilever (5). A rotating shaft (6) is provided through the sliders (7) and the bottom of the vertical plate (4). A grinding wheel (8) is detachably connected to one end of the rotating shaft (6). All the grinding wheels (8) located on the front side of the cantilever (5) are coplanar and their outer diameter gradually increases backward along the length direction of the cantilever (5). The cantilever (5) is rotatably connected to one side of the vertical plate (4) through a telescopic driver (9).

2. The welding auxiliary device for automatic beveling of steel plate weld seams according to claim 1, characterized in that, A slide rail (51) is provided through one side of the cantilever (5). The slider (7) is slidably disposed in the slide rail (51). Adjacent sliders (7) are connected by a support spring (101). The end of the slide rail (51) near the vertical plate (4) and the adjacent slider (7) are also connected by a support spring (101).

3. The welding auxiliary device for automatic beveling of steel plate weld seams according to claim 2, characterized in that, The number of the rotating shafts (6) is four and the other end of each shaft is fixedly connected to a passive pulley (102). The back of the cantilever (5) is also rotatably connected to a passive pulley (102) via a fixed shaft (52). The fixed shaft (52) is located near the bottom of the vertical plate (4). The front side of the vertical plate (4) is fixedly connected to a motor (103) near the top. The output shaft of the motor (103) is also fixedly connected to an active pulley (1031). The active pulley (1031) is connected to the passive pulley (102) via a transmission belt (104). One side of the vertical plate (4) is connected to a tensioning pulley (106) that is compatible with the transmission belt (104) via a support arm (41).

4. The welding auxiliary device for automatic beveling of steel plate weld seams according to claim 3, characterized in that, The tensioning wheel (106) includes a support shaft (1061), a support pulley (1062), and a spring (1063). A positioning plate (411) is fixedly connected to one side of the support arm (41). The support shaft (1061) is provided through the plate surface of the positioning plate (411) and the two are slidably connected. A connecting plate (10611) is fixedly connected to one end of the support shaft (10611). A positioning shaft (106111) that is rotatably connected to the support pulley (1062) is fixedly connected to one side of the connecting plate (10611). A baffle (10612) is fixedly connected to the other end of the support shaft (1061). The spring (1063) is sleeved on the support shaft (1061) and located between the baffle (10612) and the positioning plate (411).

5. The welding auxiliary device for automatic beveling of steel plate weld seams according to claim 2, characterized in that, The slider (7) is fixedly connected to two ends of a limiting shaft (71) sleeved in a support spring (101), and the slide (51) is fixedly connected to one end near the vertical plate (4) with a limiting shaft (511) sleeved in a support spring (101).

6. The welding auxiliary device for automatic beveling of steel plate weld seams according to claim 1, characterized in that, The front side of the vertical plate (4) is rotatably connected to a base (105) near the middle. The telescopic actuator (9) is an electric push rod and is fixedly connected to one side of the base (105). The output shaft end of the telescopic actuator (9) is rotatably connected to one side of the cantilever (5).

7. The welding auxiliary device for automatic beveling of steel plate weld seams according to claim 1, characterized in that, The front side of the cantilever (5) is detachably connected to a protective cover (109). The grinding wheel (8) is located inside the protective cover (109) and extends downward from the bottom of the protective cover (109). A dust collection box (1091) is fixedly connected to the top wall of the protective cover (109), and an air inlet pipe (1092) is fixedly connected to the rear end of the protective cover (109).

8. The welding auxiliary device for automatic beveling of steel plate weld seams according to claim 1, characterized in that, The top wall of the sliding sleeve (2) is fixedly connected to a guide post (21) sleeved in the connecting sleeve (3). The top of the guide post (21) is fixedly connected to an mounting plate (211). The top of the mounting plate (211) is fixedly connected to a second motor (107). The output shaft of the second motor (107) is fixedly connected to a lead screw (1071). The outer wall of the connecting sleeve (3) is fixedly connected to a first threaded sleeve (31) sleeved outside the lead screw (1071) via a connecting rod.

9. The welding auxiliary device for automatic beveling of steel plate weld seams according to claim 1, characterized in that, The guide rail (1) is fixedly connected to two ends of a support plate (11), and the bottom end of the support plate (11) is fixedly connected to a base plate (111). The sliding sleeve (2) is fixedly connected to one side of a suspension plate (22), and the bottom of the suspension plate (22) is fixedly connected to a threaded sleeve (221). A drive shaft (110) is sleeved through the threaded sleeve (221), and the drive shaft (110) and the threaded sleeve (221) are screwed together. The top of the base plate (111) is fixedly connected to a vertical plate (1111) that is rotatably connected to one end of the drive shaft (110). One side of one of the vertical plates (1111) is fixedly connected to an output shaft and a motor (108) that is fixedly connected to one end of the drive shaft (110).

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