A middle groove wear-resistant layer plasma surfacing processing device

Abstract

The application discloses a middle groove wear-resistant layer plasma surfacing processing device and belongs to the technical field of surfacing processing. The middle groove wear-resistant layer plasma surfacing processing device comprises a base, the upper end of the base is fixedly connected with a welding table, the inside of the welding table is provided with a movable plate, the upper end of the movable plate is rotationally connected with a plurality of supporting balls, the inside bottom end of the welding table is rotationally connected with a rotating shaft, and the outer wall of the rotating shaft is fixedly provided with a movable rod. The motor drives the rotating shaft and the movable rod to rotate, the connecting rod A, the moving rod and the L-shaped rod A are cooperated, the clamping roller first clamps and centers the workpiece in front and back, then the connecting rod B and the connecting rod C are cooperated to drive the sliding block and the moving frame to move inward, the clamping plate drives the workpiece to be clamped from the left and right sides, the accurate positioning and the multidirectional stable clamping of the workpiece on the welding table are effectively ensured, the workpiece is prevented from being deviated in the welding process, and the positioning precision and the welding quality of the surfacing processing are improved.

Description

Technical Field

[0001] This invention belongs to the field of surfacing processing technology, specifically relating to a plasma surfacing processing device for a wear-resistant layer in a central groove. Background Technology

[0002] The plasma cladding process for the wear-resistant layer of the central trough is used in the industry. The central trough is the core load-bearing component of the scraper conveyor. Under the complex working conditions in underground coal mines, it is subjected to friction and impact from the conveyed materials and the squeezing and scraping of coal gangue for a long time. The surface is prone to wear failure, which directly affects the overall service life of the scraper conveyor. Therefore, the industry generally adopts the plasma cladding process to prepare a wear-resistant layer on the working surface of the central trough, thereby improving the wear resistance of the central trough and extending its service life.

[0003] CN122400956A discloses a welding platform for overlay welding of the middle groove of a scraper conveyor, which relates to the field of welding equipment technology. The platform includes a straight slide rail and a floating platform set at both ends of the straight slide rail. A bearing platform is provided on one side of the floating platform to support the middle groove horizontally, and a support mechanism is provided on the floating platform to slightly lift the middle groove from the bearing platform.

[0004] The device slightly lifts the end plate of the central groove through a support mechanism, separating the bottom of the central groove from the supporting platform. This welding platform can accommodate central grooves of different weights. In conjunction with a movable lateral component, it drives a positioning mechanism to perform rolling centering correction on the slightly lifted central groove, ensuring that the central groove can be accurately positioned on the welding platform before cladding. However, it only relies on the positioning wheels and support frame to support and clamp the end plate from both sides. The bottom of the workpiece lacks stable support that fits against the welding table surface. This may cause the workpiece to shake or shift when subjected to welding stress and thermal deformation during plasma cladding, affecting the uniformity of the weld bead formation and the welding quality. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this invention provides a plasma overlay welding device for the wear-resistant layer of a central tank, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, the present invention provides a plasma overlay welding processing device for a wear-resistant layer in a central groove, including a base, a welding table fixedly connected to the upper end of the base, a movable plate being provided inside the welding table, and a plurality of support balls being rotatably connected to the upper end of the movable plate. The welding station has a rotating shaft rotatably connected to its inner bottom end. A movable rod is fixedly sleeved on the outer wall of the rotating shaft. Both ends of the movable rod are hinged to connecting rod A via pins. The other end of connecting rod A is hinged to a moving rod. An L-shaped rod A is movably sleeved on the outer wall of the moving rod. The lower end of the L-shaped rod A slides through the side of the welding station. The other end of the L-shaped rod A is fixedly connected to a rectangular frame. Multiple clamping rollers are rotatably connected to the inner side of the rectangular frame. Connecting rods B and C are respectively hinged to the outer walls of the moving rod and the L-shaped rod A. A slider is hinged to the other end of connecting rods B and C. The left and right sides of the welding station slide through the L-shaped rod B. A moving frame is fixedly connected to the inner side of the L-shaped rod B. The slider is slidably connected inside the moving frame. A clamping plate is fixedly connected to the upper end of the L-shaped rod B.

[0007] According to the above technical solution, the L-shaped rod A has a receiving groove inside, and a spring A is fixedly connected inside the receiving groove. The other end of the spring A is fixedly connected to one end of the moving rod.

[0008] According to the above technical solution, a through groove is provided at the upper end of the welding table, and the support ball moves through the through groove.

[0009] According to the above technical solution, the inner side of the clamping roller protrudes from the inner end of the rectangular frame, and the rectangular frame and the clamping roller are located on the front and rear sides of the welding table.

[0010] According to the above technical solution, an L-shaped frame is fixedly connected to the bottom of the welding table. A groove is provided at the top of the L-shaped frame. A support block is slidably connected inside the groove. Rollers are mounted at the top and bottom of the support block. A buffer block is slidably connected inside the vertical end of the L-shaped frame. A spring B is fixedly connected between the bottom of the buffer block and the bottom of the L-shaped frame. Movable telescopic rods slide through both sides of the welding table. A movable frame is fixedly connected to the inner end of the movable telescopic rod. A linkage shaft is rotatably connected to the side of the support block. The linkage shaft is slidably connected inside the movable frame. A linkage rod is fixedly connected to the bottom of the clamping plate. The outer end of the movable telescopic rod is fixedly connected to the inner side of the linkage rod.

[0011] According to the above technical solution, a spring C is fixedly connected to the inner side of the welding table, and the other end of the spring C is fixedly connected to the movable frame.

[0012] According to the above technical solution, the movable plate is slidably connected inside the welding station, and the roller on the upper side of the support block is in contact with the bottom of the movable plate.

[0013] According to the above technical solution, a fixed box is fixedly connected to the upper end of the base, a gear is rotatably connected to the inner side of the fixed box, a rotating rod is fixedly connected to the inner side of the gear, a protective cover is fixedly sleeved on the outer wall of the rotating rod, a toothed plate slides through the inner side of the fixed box, a connecting rod B is fixedly connected to the inner end of the toothed plate, the other end of the connecting rod B is located inside the welding table and is hinged to a connecting rod D, and the other end of the connecting rod D is hinged to the bottom of the buffer block.

[0014] According to the above technical solution, movable grooves are provided on the left and right sides of the welding table, and the middle part of the connecting rod B is slidably connected to the inner wall of the movable groove.

[0015] The advantages of this application are: (1) This application uses a motor to drive the rotating shaft and movable rod to rotate. Through the cooperation of connecting rod A, moving rod and L-shaped rod A, the clamping roller first clamps and centers the workpiece from front to back. Then, through the cooperation of connecting rod B and connecting rod C, the slider and moving frame are driven to move inward, which drives the clamping plate to clamp the workpiece from the left and right sides. This effectively ensures the accurate positioning and multi-directional stable clamping of the workpiece on the welding table, avoids the workpiece from shifting during the welding process, and improves the positioning accuracy and welding quality of the surfacing process.

[0016] (2) When the clamping plate moves inward, the linkage rod drives the movable telescopic rod and the movable frame to move, pushing the support block to rise along the slide to lift the workpiece. After clamping, the support block falls onto the buffer block under the weight of the workpiece, and the support ball retracts to make the workpiece fit against the welding table surface to ensure welding stability, thus improving the convenience of operation and welding stability.

[0017] (3) When the buffer block descends, the connecting rod D pushes the connecting rod B and the toothed plate to slide outward, driving the gear and the rotating rod to rotate and lift the protective cover. During the welding process, a protective barrier is automatically formed to block the welding slag splash and arc radiation. The protective cover is automatically opened and closed according to the workpiece clamping state, which effectively improves the safety protection level and operation convenience of the equipment. Attached Figure Description

[0018] Figure 1 This is an overall diagram of the invention; Figure 2 This is a partial perspective view of the present invention; Figure 3 This is a top sectional view of the present invention; Figure 4 This is the invention Figure 3 Enlarged view of point A in the middle; Figure 5 This is a side sectional view of the present invention; Figure 6 This is the invention Figure 5 Enlarged view at point B in the middle; Figure 7 This is the invention Figure 5 Enlarged view at point C; Figure 8 This is the invention Figure 5 Enlarged view of point D in the middle.

[0019] Explanation of key figure labels: 1. Base; 2. Welding table; 3. Movable plate; 4. Support ball; 51. Rotating shaft; 52. Movable rod; 53. Connecting rod A; 54. Moving rod; 55. L-shaped rod A; 56. Rectangular frame; 57. Clamping roller; 58. Connecting rod B; 59. Connecting rod C; 510. Slider; 511. Moving frame; 512. L-shaped rod B; 513. Clamping plate; 514. Spring A; 61. L-shaped frame; 62. Slide groove; 63. Support block; 64. Roller; 65. Buffer block; 66. Movable telescopic rod; 67. Movable frame; 68. Linkage shaft; 69. Linkage rod; 611. Spring C; 71. Fixed box; 72. Gear; 73. Rotating rod; 74. Protective cover; 75. Tooth plate; 76. Connecting rod B; 78. Connecting rod D; 79. Movable groove. Detailed Implementation

[0020] 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.

[0021] Example 1, as Figures 1-6 As shown, a plasma overlay welding device for a wear-resistant layer in a central groove includes a base 1, a welding table 2 fixedly connected to the upper end of the base 1, a movable plate 3 inside the welding table 2, and multiple support balls 4 rotatably connected to the upper end of the movable plate 3. A rotating shaft 51 is rotatably connected to the bottom of the welding table 2. A movable rod 52 is fixedly sleeved on the outer wall of the rotating shaft 51. The two ends of the movable rod 52 are hinged to a connecting rod A53 via pins. The other end of the connecting rod A53 is hinged to a moving rod 54. An L-shaped rod A55 is movably sleeved on the outer wall of the moving rod 54. The lower end of the L-shaped rod A55 slides through the side of the welding table 2. The other end of the L-shaped rod A55 is fixedly connected to a rectangular frame 56. The inner side of the rectangular frame 56 is rotatably connected to... There are multiple clamping rollers 57. The outer walls of the moving rod 54 and the L-shaped rod A55 are respectively hinged to connecting rods B58 and C59. The other ends of connecting rods B58 and C59 are hinged to sliders 510. The left and right sides of the welding table 2 are slidably connected to L-shaped rods B512. The inner side of the L-shaped rod B512 is fixedly connected to a moving frame 511. The slider 510 is slidably connected inside the moving frame 511. The upper end of the L-shaped rod B512 is fixedly connected to a clamping plate 513.

[0022] The L-shaped rod A55 has an internal receiving groove, and a spring A514 is fixedly connected inside the receiving groove. The other end of the spring A514 is fixedly connected to one end of the moving rod 54. By setting the spring A514, after the clamping roller 57 presses against the workpiece, the moving rod 54 can compress the spring A514 when it continues to move inward, providing clearance space for the sliding of the moving rod 54 relative to the L-shaped rod A55. This allows the relative displacement between the moving rod 54 and the L-shaped rod A55 to drive the connecting rod B58 and the connecting rod C59 to work together, thereby realizing the subsequent clamping action of the clamping plate 513.

[0023] The upper end of the welding table 2 is provided with a through groove, through which the support ball 4 moves. By setting the through groove, a movement channel is provided for the support ball 4 to extend and retract from the upper surface of the welding table 2, so that the support ball 4 can extend out of the through groove to support the workpiece or retract into the through groove to make the workpiece fit against the upper surface of the welding table 2 under the drive of the movable plate 3, thereby realizing the switching between flexible support and stable placement of the workpiece on the welding table 2.

[0024] The inner side of the clamping roller 57 protrudes from the inner end of the rectangular frame 56. The rectangular frame 56 and the clamping roller 57 are located on the front and rear sides of the welding table 2. By protruding the inner side of the clamping roller 57 from the inner end of the rectangular frame 56, the clamping roller 57 can preferentially contact the front and rear sides of the workpiece for clamping and centering. After the clamping roller 57 is pressed against the workpiece, the rectangular frame 56 acts as a limiting structure to prevent the clamping roller 57 from excessively squeezing the workpiece.

[0025] When the above equipment is used to weld the middle groove plate, it is first placed on the upper end of the support ball 4 on the upper side of the welding table 2. Then, the motor connected to the bottom of the base 1 is started, which drives the rotating shaft 51 to rotate counterclockwise. The rotating shaft 51 drives the movable rod 52 to rotate counterclockwise. The movable rod 52 pushes the moving rod 54 to slide inward to the inside of the welding table 2 through the connecting rod A53. The moving rod 54 drives the L-shaped rod A55 and the rectangular frame 56 to move inward to the inside of the welding table 2. The clamping roller 57 inside the rectangular frame 56 clamps and positions the workpiece from the front and rear sides of the middle groove plate. After the clamping roller 57 clamps and centers the middle groove plate, the movable rod 52 continues to rotate and continues to pull the moving rod 54 towards the inside of the welding table 2 through the connecting rod A53. At this time, the L-shaped rod A55 cannot continue to move. Then the moving rod 54 will slide outward from the receiving groove inside the L-shaped rod A55. As a result, one end of the connecting rod B58 and connecting rod C59, which are respectively hinged to the outside of the moving rod 54 and the L-shaped rod A55, will move away from each other. Then the connecting rod B58 and connecting rod C59 will pull the slider 510, which is hinged to the other end of them, towards the middle of the welding table 2. Then the slider 510 will drive the moving frame 511 to move inward. The moving frame 511 drives the L-shaped rod B512 and the clamping plate 513 to move horizontally inward. The clamping plate 513 further clamps and positions the workpiece from both sides of the central groove plate. With the front and rear clamping of the clamping roller 57 and the support of the support ball 4, the workpiece is stably clamped in multiple directions in the horizontal direction. Once the middle channel plate is clamped and fixed, the plasma welding equipment is started to perform plasma welding on the surface of the middle channel plate to form a wear-resistant layer.

[0026] Example 2, as Figure 5 , Figure 7 As shown, based on Embodiment 1, an L-shaped frame 61 is fixedly connected to the bottom of the welding table 2. A groove 62 is provided at the top of the L-shaped frame 61. A support block 63 is slidably connected inside the groove 62. Rollers 64 are mounted on the upper and lower ends of the support block 63. A buffer block 65 is slidably connected inside the vertical end of the L-shaped frame 61. A spring B is fixedly connected between the bottom of the buffer block 65 and the bottom of the L-shaped frame 61. Movable telescopic rods 66 slide through both sides of the welding table 2. A movable frame 67 is fixedly connected to the inner end of the movable telescopic rod 66. A linkage shaft 68 is rotatably connected to the side of the support block 63. The linkage shaft 68 is slidably connected inside the movable frame 67. A linkage rod 69 is fixedly connected to the bottom of the clamping plate 513. The outer end of the movable telescopic rod 66 is fixedly connected to the inner side of the linkage rod 69.

[0027] A spring C611 is fixedly connected to the inner side of the welding table 2, and the other end of the spring C611 is fixedly connected to the movable frame 67.

[0028] The movable plate 3 is slidably connected inside the welding table 2. The roller 64 on the upper side of the support block 63 is in contact with the bottom of the movable plate 3. By setting the movable plate 3 to be slidably connected inside the welding table 2 and in contact with the roller 64 on the upper side of the support block 63 at its bottom, the roller 64 can smoothly push the movable plate 3 up when the support block 63 slides upward along the slide groove 62. The rolling contact between the roller 64 and the bottom of the movable plate 3 reduces frictional resistance and ensures the smooth lifting and lowering of the movable plate 3.

[0029] When the above-mentioned equipment is used, the clamping plate 513 moves inward and drives the linkage rod 69 to move inward at the same time. The linkage rod 69 first squeezes the movable telescopic rod 66 to retract it. When it retracts to the bottom, it pushes the movable frame 67 to move inward and stretches the spring C611. When the movable frame 67 moves inward, it pushes the support block 63 to slide upward along the slide groove 62 at the upper end of the L-shaped frame 61 through the linkage shaft 68. The rollers 64 at the upper and lower ends of the support block 63 roll along the slide groove 62 to reduce sliding friction and make the support block 63 move more smoothly. When the clamping plate 513 contacts and clamps the workpiece on both sides, the support block 63 moves to the vertical end of the L-shaped frame 61. The support block 63 moves downward under the weight of the workpiece, and the roller 64 at its bottom falls to the top of the buffer block 65. The roller 64 on the upper side of the support block 63 also descends, and the movable plate 3 supported by the upper roller 64 and the support ball 4 on the upper end of the movable plate 3 also move downward and are retracted into the interior of the welding table 2 through the through groove, so that the bottom of the workpiece fits with the upper end of the welding table 2, thereby ensuring the stability during welding. When welding is completed, the clamping plate 513 moves outward to reset. Before the workpiece is removed, the support block 63, roller 64 and buffer block 65 cannot rise. At this time, the linkage rod 69 drives the movable telescopic rod 66 to extend, while the movable frame 67 remains stationary and the spring C611 remains in a stretched state, waiting for the workpiece to be removed. When the workpiece is removed, the pressure on the upper end of the support block 63 disappears, the spring B pushes the buffer block 65 to reset upward, the buffer block 65 pushes the roller 64 at the bottom of the support block 63 to move upward, the support block 63 slides upward along the slide groove 62 to reset, the roller 64 on the upper side of the support block 63 pushes the movable plate 3 and the support ball 4 to move upward to reset, and the support ball 4 extends out of the upper end face of the welding table 2 again to prepare for the next workpiece placement; At the same time, spring C611 assists in pushing the movable frame 67 to reset. The movable frame 67 cooperates with the support block 63 through the linkage shaft 68, so that the support block 63 is stably reset to the outer slide groove 62 section of the L-shaped frame 61. The linkage rod 69 drives the movable telescopic rod 66 to retract and reset, the clamping plate 513 is fully opened, the equipment returns to the initial state, and waits for the next round of workpiece clamping and welding operations.

[0030] Example 3, as Figure 2 , Figure 5 , Figure 7-8 As shown, based on Embodiment 1, a fixed box 71 is fixedly connected to the upper end of the base 1. A gear 72 is rotatably connected to the inner side of the fixed box 71. A rotating rod 73 is fixedly connected to the inner side of the gear 72. A protective cover 74 is fixedly sleeved on the outer wall of the rotating rod 73. A toothed plate 75 slides through the inner side of the fixed box 71. A connecting rod B76 is fixedly connected to the inner end of the toothed plate 75. The other end of the connecting rod B76 is located inside the welding table 2 and is hinged to a connecting rod D78. The other end of the connecting rod D78 is hinged to the bottom of the buffer block 65.

[0031] The welding table 2 has movable grooves 79 on both sides. The middle part of the connecting rod B76 is slidably connected to the inner wall of the movable groove 79. By setting the movable groove 79, a movement channel and guide are provided for the horizontal sliding of the connecting rod B76 as it moves up and down with the buffer block 65. This allows the connecting rod B76 to slide smoothly outward or inward along the movable groove 79, converting the vertical lifting motion of the buffer block 65 into the horizontal movement of the toothed plate 75, which drives the gear 72 and the protective cover 74 to rotate.

[0032] In practical use, when the buffer block 65 moves downward, the buffer block 65 drives the connecting rod D78 to move downward. The connecting rod D78 pushes the connecting rod B76 to slide outward along the movable groove 79. The connecting rod B76 drives the toothed plate 75 to slide outward. The toothed plate 75 drives the gear 72 to rotate. The gear 72 drives the rotating rod 73 and the protective cover 74 to rotate and rise. The protective cover 74 rotates from the horizontal storage state to the vertical protection state and covers the welding table 2. During the plasma cladding process, it blocks the slag spatter and arc radiation, protecting the safety of the operators. After welding is completed and the workpiece is removed, the buffer block 65 returns to its original position under the action of the spring B. The buffer block 65 drives the connecting rod D78 to move upward. The connecting rod D78 pulls the connecting rod B76 to slide inward along the movable groove 79 to return to its original position. The toothed plate 75 slides inward to drive the gear 72 to rotate in the opposite direction. The rotating rod 73 and the protective cover 74 rotate in the opposite direction to return to the horizontal storage state, opening up the space above the welding table 2 to facilitate the loading and unloading of the workpiece.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A plasma overlay welding apparatus for a wear-resistant layer in a central groove, comprising a base, characterized in that, A welding table is fixedly connected to the upper end of the base. A movable plate is provided inside the welding table. Multiple support balls are rotatably connected to the upper end of the movable plate. The welding station has a rotating shaft rotatably connected to its inner bottom end. A movable rod is fixedly sleeved on the outer wall of the rotating shaft. Both ends of the movable rod are hinged to connecting rod A via pins. The other end of connecting rod A is hinged to a moving rod. An L-shaped rod A is movably sleeved on the outer wall of the moving rod. The lower end of the L-shaped rod A slides through the side of the welding station. The other end of the L-shaped rod A is fixedly connected to a rectangular frame. Multiple clamping rollers are rotatably connected to the inner side of the rectangular frame. Connecting rods B and C are respectively hinged to the outer walls of the moving rod and the L-shaped rod A. A slider is hinged to the other end of connecting rods B and C. The left and right sides of the welding station slide through the L-shaped rod B. A moving frame is fixedly connected to the inner side of the L-shaped rod B. The slider is slidably connected inside the moving frame. A clamping plate is fixedly connected to the upper end of the L-shaped rod B.

2. The plasma overlay welding apparatus for the wear-resistant layer of the central groove according to claim 1, characterized in that, The L-shaped rod A has a receiving groove inside, and a spring A is fixedly connected inside the receiving groove. The other end of the spring A is fixedly connected to one end of the moving rod.

3. The plasma overlay welding apparatus for the wear-resistant layer of the central groove according to claim 2, characterized in that, The upper end of the welding table is provided with a through groove, through which the support ball moves.

4. The plasma overlay welding apparatus for the wear-resistant layer of the central groove according to claim 3, characterized in that, The inner side of the clamping roller protrudes from the inner end of the rectangular frame, and the rectangular frame and the clamping roller are located on the front and rear sides of the welding table.

5. The plasma overlay welding apparatus for the wear-resistant layer of the central groove according to claim 4, characterized in that, An L-shaped frame is fixedly connected to the bottom of the welding station. A groove is provided at the top of the L-shaped frame, and a support block is slidably connected inside the groove. Rollers are fitted at the top and bottom of the support block. A buffer block is slidably connected inside the vertical end of the L-shaped frame. A spring B is fixedly connected between the bottom of the buffer block and the bottom of the L-shaped frame. Movable telescopic rods slide through both sides of the welding station. A movable frame is fixedly connected to the inner end of the movable telescopic rod. A linkage shaft is rotatably connected to the side of the support block. The linkage shaft is slidably connected inside the movable frame. A linkage rod is fixedly connected to the bottom of the clamping plate. The outer end of the movable telescopic rod is fixedly connected to the inner side of the linkage rod.

6. The plasma overlay welding apparatus for the wear-resistant layer of the central groove according to claim 5, characterized in that, A spring C is fixedly connected to the inner side of the welding station, and the other end of the spring C is fixedly connected to the movable frame.

7. The plasma overlay welding apparatus for the wear-resistant layer of the central groove according to claim 6, characterized in that, The movable plate is slidably connected inside the welding table, and the rollers on the upper side of the support block are in contact with the bottom of the movable plate.

8. The plasma overlay welding apparatus for the wear-resistant layer of the central groove according to claim 1, characterized in that, A fixed box is fixedly connected to the upper end of the base. A gear is rotatably connected to the inner side of the fixed box. A rotating rod is fixedly connected to the inner side of the gear. A protective cover is fixedly sleeved on the outer wall of the rotating rod. A toothed plate slides through the inner side of the fixed box. A connecting rod B is fixedly connected to the inner end of the toothed plate. The other end of the connecting rod B is located inside the welding table and is hinged to a connecting rod D. The other end of the connecting rod D is hinged to the bottom of the buffer block.

9. The plasma overlay welding apparatus for the wear-resistant layer of the central groove according to claim 8, characterized in that, The welding table has movable grooves on its left and right sides, and the middle part of the connecting rod B is slidably connected to the inner wall of the movable groove.

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