A composite wear-resistant steel plate material composite welding device

Abstract

The application discloses a composite wear-resistant steel plate material composite welding device, and belongs to the field of laser welding, which comprises a turnover plate, a laser welding head and an electric arc welding head are fixedly installed on the front face of the turnover plate, a supporting frame is arranged above the turnover plate, an electric push rod is fixedly connected below the supporting frame, a connecting plate is fixedly connected to the lower end of the electric push rod, a lifting frame is fixedly connected below the connecting plate, and a rotating shaft is penetratingly and rotatably connected to the right side of the lifting frame. The baffle and the cover are arranged to protect the laser welding head and the electric arc welding head, the laser welding head and the electric arc welding head are in a flat state and are accommodated in the baffle and the cover in an idle state, and when the laser welding head and the electric arc welding head are needed to be used, the laser welding head and the electric arc welding head are moved out of the baffle and the cover when descending and approaching the steel plate, and the laser welding head and the electric arc welding head are conveniently protected in the idle state.

Description

Technical Field

[0001] This application relates to the field of laser welding, and more specifically, to a composite welding device for wear-resistant steel plates. Background Technology

[0002] Welding technology is one of the key technologies in engineering manufacturing. Laser welding technology is widely used in aerospace, high-speed train, and automotive industries due to its outstanding advantages such as high energy density, fast welding speed, large weld depth-to-width ratio, good joint performance, and small weld deformation. However, these advantages are greatly reduced when laser welding non-ferrous metal alloys with high reflectivity. Based on the characteristics of the alloy material being processed, using a laser alone as a heat source is difficult to weld thick alloy structures. Furthermore, the excessively high cooling rate during welding can cause welding defects. The laser-arc hybrid welding method organically combines the two heat sources, laser and arc, improving laser energy absorption and arc stability through their interaction.

[0003] Patent document CN114918545B discloses a composite wear-resistant steel plate welding device. This invention relates to a composite wear-resistant steel plate welding device, including a workbench and an electric slide rail mounted on the upper end of the workbench. It also includes a composite welding module mounted on the upper end of the electric slide rail, which drives the composite welding module to move back and forth. The composite welding module employs a welding design combining laser and electric arc. The composite welding module oscillates back and forth as it moves with the electric slide rail, and the distance between the composite welding module and the steel plate is adaptively adjusted according to the weld depth. While the aforementioned application uses a laser and electric arc welding method to weld steel plates, the laser welding head and electric arc welding head are always exposed. During prolonged use, they are prone to dust accumulation or damage from external impacts. This makes it inconvenient to release the laser welding head and electric arc welding head when welding steel plates, and it does not provide adequate protection for the laser welding head and electric arc welding head. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a composite wear-resistant steel plate welding device, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, this application provides a composite wear-resistant steel plate welding device, including a flipping plate. A laser welding head and an arc welding head are fixedly installed on the front of the flipping plate. A support frame is provided above the flipping plate, and an electric push rod is fixedly connected below the support frame. A connecting piece is fixedly connected to the lower end of the electric push rod, and a lifting frame is fixedly connected below the connecting piece. A rotating shaft is rotatably connected through the right side of the lifting frame. The rotating shaft is rotatably connected through the right side of the flipping plate. A spring telescopic rod and a limiting telescopic rod are fixedly connected below the support frame. A mounting plate is fixedly connected to the lower end of the spring telescopic rod and the limiting telescopic rod. A rack is fixedly connected to the lower end of the mounting plate. A first gear meshes with the front of the rack. The first gear is fixedly connected to the right end of the rotating shaft. A top plate is fixedly connected to the lower end of the rack. A limiting plate is provided above the top plate. The limiting plate is fixedly connected to the right side of the lifting frame. A baffle is fixedly connected to the front of the lifting frame. A cover is hinged to the front of the baffle. A switch assembly for opening the cover is installed on the right side of the cover. A limiting assembly for preventing the laser welding head from colliding with the steel plate is installed below the lifting frame.

[0006] Preferably, a base plate is provided below the laser welding head and the arc welding head, and an electric slide rail is fixedly installed above the base plate.

[0007] Preferably, a sliding seat is slidably connected above the electric slide rail, and the sliding seat is fixedly connected to the lower part of the support frame.

[0008] Preferably, the switch assembly includes a rotating column, which is fixedly connected to the right side of the baffle. A swing bar is fixedly connected above the rotating column, and an arc-shaped toothed plate is fixedly connected to the upper end of the swing bar. A second gear meshes above the arc-shaped toothed plate, and the second gear is fixedly connected to the right side of the baffle. A support plate is fixedly connected to the right side of the baffle, and a tension spring is elastically connected between the support plate and the swing bar.

[0009] Preferably, the switch assembly further includes a top actuating seat, which is fixedly connected to the front of the rotating shaft, and a lifting rod is fixedly connected to the left side of the top actuating seat.

[0010] Preferably, a limit block is provided below the swing bar, and the limit block is fixedly connected to the right side of the baffle.

[0011] Preferably, the limiting component includes a rotating rod that passes through and is rotatably connected to the left and right sides of the lifting frame. A limiting strip is fixedly connected to the outer surface of the rotating rod. There are two limiting strips, and rollers are rotatably connected to opposite sides of the two limiting strips.

[0012] Preferably, the limiting component further includes a third gear, which is fixedly connected to the outer surface of the rotating shaft, and a fourth gear meshes below the third gear, which is fixedly connected to the outer surface of the rotating rod.

[0013] The advantages of this application are:

[0014] (1) This application provides protection for laser welding head and arc welding head by setting up baffles and covers. When the laser welding head and arc welding head are idle, they are flat and stored in the baffles and covers. When the laser welding head and arc welding head are needed, they will move out from the baffles and covers as they descend and approach the steel plate. This provides protection for the laser welding head and arc welding head when idle.

[0015] (2) This application uses a switch assembly to open and close the shield. The shield will be closed when the laser welding head and the arc welding head are completely flat. When the shield is in a flat position with a certain angle, the shield is in the open position, which facilitates the inspection and maintenance of the laser welding head and the arc welding head.

[0016] (3) This application uses a limiting component to contact the surface of the steel plate to prevent the laser welding head and the arc welding head from colliding with the steel plate when they descend. The limiting component will be laid flat or vertical as the laser welding head and the arc welding head are adjusted, which can free up more space in the idle state to facilitate loading and unloading. Attached Figure Description

[0017] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a right view of the overall structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the overall structure of the present invention in its open state;

[0021] Figure 4 This is a rear view of the overall structure of the present invention in the open state;

[0022] Figure 5 This is a schematic diagram of the overall structure of the present invention in its recycling state;

[0023] Figure 6 This is the invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0024] Figure 7 This is the invention Figure 3 Enlarged schematic diagram of the structure at point B;

[0025] Figure 8 This is the invention Figure 4 Enlarged schematic diagram of the structure at point C;

[0026] Figure 9 This is the invention Figure 5 Enlarged schematic diagram of the structure at point D.

[0027] In the above image,

[0028] 1. Flip plate; 2. Laser welding head; 3. Arc welding head; 4. Support frame; 401. Electric push rod; 402. Lifting frame; 403. Rotating shaft; 404. Connecting piece; 405. Spring telescopic rod; 406. Limiting telescopic rod; 407. Mounting piece; 408. Rack; 409. First gear; 410. Top piece; 411. Limiting piece; 412. Baffle; 413. Cover; 5. Switch assembly; 501. Rotating column; 502. Swing bar; 503. Arc-shaped toothed plate; 504. Second gear; 505. Support plate; 506. Tension spring; 507. Pushing seat; 508. Lifting rod; 509. Limiting block; 6. Limiting assembly; 601. Rotating rod; 602. Limiting bar; 603. Roller; 604. Third gear; 605. Fourth gear; 7. Base plate; 8. Electric slide rail; 9. Sliding seat. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the purposes of describing embodiments of this application herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0031] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0032] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0033] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0034] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments. Example

[0035] See Figures 1-9This embodiment provides a composite wear-resistant steel plate welding device, including a flipping plate 1 with a relatively thick thickness. A laser welding head 2 and an arc welding head 3 are fixedly installed on the front of the flipping plate 1. The laser welding head 2 and the arc welding head 3 are used for laser-arc composite welding of the composite wear-resistant steel plate, which is existing technology. A support frame 4 is provided above the flipping plate 1. The support frame 4 is L-shaped. Two electric push rods 401 are fixedly connected below the support frame 4. Two connecting plates 404 are fixedly connected to the lower end of the electric push rods 401. A lifting frame 402 is U-shaped and fixedly connected below the connecting plates 404. The right side of the lifting frame 402 is through and rotates. A rotating shaft 403 is connected to the lifting frame 402 from the right side. Bearings are installed between the rotating shaft 403 and the left and right sides of the lifting frame 402. The rotating shaft 403 is fixedly connected to the right side of the flipping plate 1. Rotation of the rotating shaft 403 can cause the flipping plate 1 to flip. A spring telescopic rod 405 and a limiting telescopic rod 406 are fixedly connected below the support frame 4. The spring telescopic rod 405 is normally in a retracted state. When the spring telescopic rod 405 extends, it stretches the internal spring. When the spring telescopic rod 405 is released, it automatically retracts under the action of the internal spring. A mounting plate 407 is fixedly connected to the lower ends of the spring telescopic rod 405 and the limiting telescopic rod 406. The limiting telescopic rod 406 has... The body is a common telescopic rod used to limit the lifting range of the mounting plate 407. A rack 408 is fixedly connected to the lower end of the mounting plate 407, with the tooth surface of the rack 408 facing forward. A first gear 409 is meshed on the front of the rack 408. The first gear 409 is fixedly connected to the right end of the rotating shaft 403. A top plate 410 is fixedly connected to the lower end of the rack 408. A limit plate 411 is provided above the top plate 410. The limit plate 411 is used to hold the top plate 410 and pull the rack 408 downward to ensure the downward rolling range of the first gear 409 on the rack 408. The limit plate 411 is fixedly connected to the right side of the lifting frame 402. Two baffles 412 are fixedly connected to the front of the lifting frame 402. A baffle 413 is hinged to the baffle plate 412. The hinge point between the baffle 413 and the baffle plate 412 is located at the upper corner of the front of the baffle plate 412. The baffle 413 can be flipped up. A switch assembly 5 for opening the baffle 413 is installed on the right side of the baffle 412. A limiting assembly 6 for preventing the laser welding head 2 from colliding with the steel plate is installed below the lifting frame 402. The limiting assembly 6 can contact the steel plate first after the laser welding head 2 and the arc welding head 3 descend, so that the laser welding head 2 and the arc welding head 3 maintain a suitable distance from the surface of the steel plate for laser-arc composite welding. A base plate 7 is provided below the laser welding head 2 and the arc welding head 3. The base plate 7 is used to place the composite wear-resistant steel plate to be welded.The composite wear-resistant steel plate is clamped and fixed below the laser welding head 2 and the arc welding head 3 by setting external clamps on the base plate 7. An electric slide rail 8 is fixedly installed above the base plate 7, and a sliding seat 9 is slidably connected above the electric slide rail 8. The electric slide rail 8 can drive the sliding seat 9 to slide back and forth. This is existing technology. The sliding seat 9 is fixedly connected to the lower part of the support frame 4. By sliding the sliding seat 9 back and forth on the electric slide rail 8, the support frame 4 is driven to move the laser welding head 2 and the arc welding head 3 back and forth, so as to perform moving welding at the weld position of the composite wear-resistant steel plate.

[0036] In practical use, the two composite wear-resistant steel plates to be welded are first placed on the base plate 7 and clamped at the correct height using external fixtures, ensuring the weld seam between the composite wear-resistant steel plates is below the lifting frame 402. When welding is required, the electric push rod 401 is activated to extend it. The extension of the electric push rod 401 pushes the connecting plate 404 down, which in turn lowers the lifting frame 402. The lowering of the lifting frame 402 then lowers the rotating shaft 403, which in turn lowers the first gear 409. At this time, the first gear 409 will roll on the rack 408, causing the first gear 409 to rotate forward during descent. This forward rotation of the first gear 409 will drive the rotating shaft 403 to rotate forward, which in turn will cause the flipping plate 1 to flip forward. The flipping plate 1 will then cause the laser welding head 2 and the arc welding head 3 to flip from a flat position to a vertically downward position, thus moving them out from the baffle 412 and the cover 413 and aligning them with the composite wear-resistant steel plate on the base plate 7, ready for welding. As the lifting frame 402 descends, it will also cause the limiting plate 411 to descend. After descending to a certain height, it will press against the top plate 410. At this time, as the lifting frame 402 descends, it will drive the limiting plate 411 to lower the top plate 410, which in turn pulls the rack 408 and the mounting plate 407 to descend with the lifting frame 402. This will cause the spring telescopic rod 405 and the limiting telescopic rod 406 to extend. The descent of the first gear 409 will not cause it to roll on the rack 408, thus limiting the rotation angle of the first gear 409 during the descent process, causing it to rotate 90 degrees to adjust the laser welding head 2 and the arc welding head 3 from a horizontal position to a vertical position. At this time, the electric push rod 401 continues to push the connecting rod. The connecting piece 404 lowers the lifting frame 402 to allow the vertical laser welding head 2 and arc welding head 3 to approach the composite wear-resistant steel plate. By activating the laser welding head 2 and arc welding head 3, laser-arc composite welding is performed on the weld between the two composite wear-resistant steel plates. At the same time, the electric slide rail 8 is activated, which drives the sliding seat 9 to slide back and forth, thereby moving the support frame 4 back and forth. The back and forth movement of the support frame 4 drives the electric push rod 401 and the lifting frame 402 to move the laser welding head 2 and arc welding head 3 back and forth, so as to perform back-and-forth welding at the weld position of the composite wear-resistant steel plate. Example

[0037] See Figures 2-9 The switch assembly 5 includes a rotating column 501, which is fixedly connected to the right side of the baffle 412. The rotating column 501 is mounted on the right side of the baffle 412. A swing bar 502 is fixedly connected above the rotating column 501. An arc-shaped toothed plate 503 is fixedly connected to the upper end of the swing bar 502. The arc center of the arc-shaped toothed plate 503 is located on the rotation axis of the rotating column 501. A second gear 504 meshes above the arc-shaped toothed plate 503. The center of the second gear 504 is located on the hinge axis between the baffle 413 and the baffle 412. The second gear 504 is fixedly connected to the right side of the baffle 413. A support plate 505 is fixedly connected to the right side of the baffle 412. A tension spring 506 is elastically connected between the support plate 505 and the swing bar 502. The upper end of the tension spring 506 is fixedly connected below the swing bar 502, and the lower end of the tension spring 506 is fixedly connected above the support plate 505. Under normal conditions, 506 applies a pulling force to bring the swing bar 502 close to the support plate 505. The switch assembly 5 also includes a top seat 507, which is L-shaped and fixedly connected to the front of the rotating shaft 403. The rotation of the rotating shaft 403 can drive the top seat 507 to rotate. A lifting rod 508 is fixedly connected to the left side of the top seat 507. The lifting rod 508 can contact and press the swing bar 502 to lift it upward. The contact position between the lifting rod 508 and the swing bar 502 is close to the rotating column 501. A limit block 509 is provided below the swing bar 502. The limit block 509 is used to limit the swing bar 502 so that when the tension spring 506 applies a pulling force to pull the swing bar 502 toward the support plate 505, the swing bar 502 will rest on the limit block 509. The limit block 509 is fixedly connected to the right side of the baffle 412 and is located on the right side of the baffle 412.

[0038] In practical use, when the first gear 409 descends and rolls on the rack 408, its forward rotation during descent drives the pusher seat 507 to lower the lifting rod 508. At this time, the lifting rod 508 moves away from the swing bar 502, thus removing its support. The tension spring 506 then applies tension, pulling the swing bar 502 towards the support plate 505. The swing bar 502 then moves the arc-shaped toothed plate 503 forward, which in turn drives the second gear 504 to rotate backward, thereby driving the baffle 413. The baffle 412 is lifted upwards. When the welding of the composite wear-resistant steel plate is completed, the electric push rod 401 retracts, driving the connecting plate 404 to raise the lifting frame 402. The descent of the lifting frame 402 drives the rotating shaft 403 and the first gear 409 to rise. The rise of the lifting frame 402 also drives the limiting plate 411 to rise. At this time, the extended spring telescopic rod 405 will gradually retract, thereby pulling the mounting plate 407 and the rack 408 so that the top plate 410 will always press against the limiting plate 411 and rise with it. When it rises to the state where the spring telescopic rod 405 is fully retracted, As the lifting frame 402 rises, the second gear 504 rolls on the rack 408, causing the rotating shaft 403 to rotate backward during the ascent. The rotating shaft 403 then drives the flipping plate 1 to flip the laser welding head 2 and the arc welding head 3 backward, turning them from vertical downward to a horizontal position. During the backward rotation of the rotating shaft 403, the top seat 507 is driven to lift the lifting rod 508 upward. When the lifting rod 508 is raised to the point of contacting the swing bar 502, the laser welding head 2 and the arc welding head 3 will flip to a near-horizontal position. At this time, the laser welding head 2 and the arc welding head 3... It will point to the front to facilitate maintenance and replacement. As the lifting frame 402 continues to rise, the rotating shaft 403 continues to rotate backward, which will drive the top seat 507 and the lifting rod 508 to continue to rise and push the swing bar 502 upward. The swing bar 502 will drive the arc-shaped toothed plate 503 to move the second gear 504 to rotate to the front, thereby driving the cover 413 to close downward on the baffle 412. When the laser welding head 2 and the arc welding head 3 are flipped to a completely horizontal state, the cover 413 will fall down to cover the laser welding head 2 and the arc welding head 3, thus playing a protective role. Example

[0039] See Figures 3-8The limiting component 6 includes a rotating rod 601, which is rotatably connected to the left and right sides of the lifting frame 402. A bearing is provided between the rotating rod 601 and the lifting frame 402. Two limiting strips 602 are fixedly connected to the outer surface of the rotating rod 601. The two limiting strips 602 are respectively provided on the left and right sides of the lifting frame 402. Rollers 603 are rotatably connected to the opposite sides of the two limiting strips 602. The rollers 603 are used to contact the composite wear-resistant steel plate and roll on its surface. When the rollers 603 contact the composite wear-resistant steel plate, a certain distance is left between the laser welding head 2 and the arc welding head 3 and the composite wear-resistant steel plate. The limiting component 6 also includes a third gear 604, which is fixedly connected to the outer surface of the rotating shaft 403. A fourth gear 605 meshes below the third gear 604. The third gear 604 and the fourth gear 605 are provided on the left side of the lifting frame 402. The fourth gear 605 is fixedly connected to the outer surface of the rotating rod 601.

[0040] In practical use, when the first gear 409 descends and rolls on the rack 408, it drives the rotating shaft 403 to rotate forward during its descent. Simultaneously, the rotation of the rotating shaft 403 forward drives the third gear 604 to rotate forward, which in turn drives the fourth gear 605 to rotate backward. The backward rotation of the fourth gear 605 causes the limiting strip 602 to flip downward, adjusting it from a flat position to a vertical position. This causes the roller 603 to face downward. As the lifting frame 402 descends and the vertical laser welding head 2 and arc welding head 3 approach the composite wear-resistant steel plate, the roller 603 will first contact the composite wear-resistant steel plate, thus limiting the laser welding head 2 and arc welding head 3 and maintaining a safe welding distance between them to prevent them from colliding with the composite wear-resistant steel plate during their descent.

[0041] 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 composite wear-resistant steel plate welding device, comprising a flipping plate (1), wherein a laser welding head (2) and an arc welding head (3) are fixedly mounted on the front side of the flipping plate (1), characterized in that, A support frame (4) is provided above the flipping plate (1). An electric push rod (401) is fixedly connected to the lower part of the support frame (4). A connecting piece (404) is fixedly connected to the lower end of the electric push rod (401). A lifting frame (402) is fixedly connected to the lower part of the connecting piece (404). A rotating shaft (403) is rotatably connected through the right side of the lifting frame (402). The rotating shaft (403) is rotatably connected through the right side of the flipping plate (1). A spring telescopic rod (405) and a limiting telescopic rod (406) are fixedly connected to the lower part of the support frame (4). An mounting piece (407) is fixedly connected to the lower end of the spring telescopic rod (405) and the limiting telescopic rod (406). A rack is fixedly connected to the lower end of the mounting piece (407). (408), the rack (408) is meshed with a first gear (409) on the front, the first gear (409) is fixedly connected to the right end of the rotating shaft (403), the rack (408) is fixedly connected to a top plate (410) at the lower end, a limit plate (411) is provided above the top plate (410), the limit plate (411) is fixedly connected to the right side of the lifting frame (402), a baffle (412) is fixedly connected to the front of the lifting frame (402), a cover (413) is hinged to the front of the baffle (412), a switch assembly (5) for opening the cover (413) is assembled on the right side of the cover (413), and a limit assembly (6) for preventing the laser welding head (2) from colliding with the steel plate is assembled below the lifting frame (402). The switch assembly (5) includes a rotating column (501), which is fixedly connected to the right side of the baffle (412). A swing bar (502) is fixedly connected above the rotating column (501). An arc-shaped toothed plate (503) is fixedly connected to the upper end of the swing bar (502). A second gear (504) meshes above the arc-shaped toothed plate (503). The second gear (504) is fixedly connected to the right side of the cover (413). A support plate (505) is fixedly connected to the right side of the baffle (412). A tension spring (506) is elastically connected between the support plate (505) and the swing bar (502). The switch assembly (5) also includes a top actuating seat (507), which is fixedly connected to the front of the rotating shaft (403), and a lifting rod (508) is fixedly connected to the left side of the top actuating seat (507).

2. The composite wear-resistant steel plate welding device according to claim 1, characterized in that, A base plate (7) is provided below the laser welding head (2) and the arc welding head (3), and an electric slide rail (8) is fixedly installed above the base plate (7).

3. The composite wear-resistant steel plate welding device according to claim 2, characterized in that, A sliding seat (9) is slidably connected above the electric slide rail (8), and the sliding seat (9) is fixedly connected to the support frame (4) below.

4. The composite wear-resistant steel plate welding device according to claim 3, characterized in that, A limit block (509) is provided below the swing bar (502), and the limit block (509) is fixedly connected to the right side of the baffle (412).

5. The composite wear-resistant steel plate welding device according to claim 4, characterized in that, The limiting component (6) includes a rotating rod (601), which is connected to the left and right sides of the lifting frame (402) and rotates. A limiting strip (602) is fixedly connected to the outer surface of the rotating rod (601). There are two limiting strips (602), and rollers (603) are rotatably connected to opposite sides of the two limiting strips (602).

6. The composite wear-resistant steel plate welding device according to claim 5, characterized in that, The limiting component (6) also includes a third gear (604), which is fixedly connected to the outer surface of the rotating shaft (403). A fourth gear (605) meshes below the third gear (604), and the fourth gear (605) is fixedly connected to the outer surface of the rotating rod (601).

Images