An excavator bulldozer blade bracket welding device

Abstract

The present invention discloses a welding device for the bulldozer blade bracket of an excavator, belonging to the technical field of welding and processing of bulldozer blade brackets. A welding device for the bulldozer blade bracket of an excavator includes a base, and two slidable moving frames are correspondingly arranged inside the base. Two arc-shaped frames are fixedly installed on the surface of the top end of any one of the moving frames. An arc-shaped block matching with the arc-shaped frames is slidably connected to the surfaces of the two arc-shaped frames. A shovel plate is placed on the surfaces of the two arc-shaped blocks. Two rotating grooves are correspondingly formed in the inner side surface of any one of the arc-shaped blocks. A rotating block is rotatably connected to the inside of the rotating grooves. A clamping groove for fixedly limiting the shovel plate is formed on the end surface of the rotating block. Compared with the traditional welding process, this welding device ensures the stability during the welding process of the bracket body and the shovel plate, improves the welding precision at the contact part between the arc-shaped plate and the shovel plate, thereby improving the welding speed and welding quality, and reducing the labor intensity of workers.

Description

Technical Field

[0001] The present invention relates to the technical field of welding processing of a bulldozer blade support, and more specifically, to a welding device for an excavator bulldozer blade support. Background Art

[0002] An excavator bulldozer blade is an important working device used for earthwork pushing and leveling operations under various working conditions. The bulldozer blade is connected to the excavator through a support. Before assembling the bulldozer blade to the excavator, the bulldozer blade support needs to be welded on the outer surface of the bulldozer blade, and a welding device is required for welding the support on the outer surface of the bulldozer blade.

[0003] There are mainly two traditional methods for welding a bulldozer blade support, but both methods have certain limitations. The first method is to cover the bulldozer blade on the ground with the outer surface of the bulldozer blade facing upwards. The support is lifted by an external hoisting device and transported to the outer surface of the bulldozer blade, and then the operator welds the contact part between the support and the bulldozer blade through a welding head. However, this method is easily affected by external factors such as wind, resulting in shaking when the support contacts the surface of the bulldozer blade, thereby affecting the accuracy of the welding position, reducing the welding speed and welding quality. The second method is to place the bulldozer blade on a erected support frame with the outer surface of the bulldozer blade facing downwards, and then place the support from below the bulldozer blade. Due to the limited space at the bottom, the operator needs to curl up the body for welding, which not only increases the labor intensity but also easily causes fatigue of the operator, further affecting the welding efficiency and quality. Summary of the Invention

[0004] The purpose of the present invention is to provide a welding device for an excavator bulldozer blade support to solve the problems raised in the above background art:

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] An earthmoving shovel support welding device for an excavator, comprising a base. Inside the base, two slidable moving frames are correspondingly arranged. On the top surface of any one of the moving frames, two arc-shaped frames are fixedly installed correspondingly. A matching arc-shaped block is slidably connected to the surfaces of the two arc-shaped frames. A shovel plate is placed on the surfaces of the two arc-shaped blocks. Two rotating grooves are correspondingly opened on the inner side surface of any one of the arc-shaped blocks. A rotating block is rotatably connected to the inside of the rotating groove. A clamping groove for fixing and limiting the shovel plate is opened on the end surface of the rotating block. A fixing frame is fixedly installed on the side surface of any one of the moving frames. A receiving frame is fixedly connected to the surfaces of the two fixing frames. A matching extraction frame is slidably connected to the inside of the two receiving frames. A placing groove is opened on the surface of the extraction frame. A support body is placed inside the placing groove. Arc-shaped plates matching the shovel plate are fixedly installed on the end surfaces of one ends of the two support bodies. A welding gun is placed on the surface of one of the receiving frames.

[0007] By adopting the above technical solution, the shovel plate is lifted by an external hoisting device and placed on the surfaces of the two arc-shaped blocks. After being placed on the surfaces of the arc-shaped blocks, the shovel plate is fixed by the clamping groove. The two gears rotate to drive the arc-shaped teeth to rotate, so that the two arc-shaped blocks rotate to drive the shovel plate to flip. Then, the two support bodies are placed inside the two placing grooves. The support bodies are pushed towards the shovel plate by personnel. At this time, the support bodies move on the surfaces of the rollers to drive the arc-shaped plates to move. When the arc-shaped plates contact the positions to be welded with the shovel plate, the elastic pieces clamp and fix the support bodies. At this time, the arc-shaped plates and the shovel plate are in matching contact with each other. Then, the personnel pick up the welding gun and weld the contact parts of the arc-shaped plates and the shovel plate. Compared with the traditional welding process, this welding device improves the welding precision of the contact parts of the arc-shaped plates and the shovel plate, thereby improving the welding speed and welding quality, and reducing the labor intensity of workers.

[0008] Preferably, arc-shaped sliding grooves are opened on the surfaces of any one of the arc-shaped frames. A pulley device is arranged between the arc-shaped sliding grooves and the arc-shaped blocks. The arc-shaped blocks are slidably connected to the arc-shaped frames through the cooperation of the pulley device and the arc-shaped sliding grooves.

[0009] By adopting the above technical solution, the setting of the pulley device ensures that the arc-shaped blocks move more smoothly and smoothly on the surfaces of the arc-shaped frames.

[0010] Preferably, a slot is opened inside any one of the moving frames. A rotating shaft is rotatably connected to the inner wall of the slot. A gear is coaxially fixedly installed on the surface of the rotating shaft. Arc-shaped teeth meshing with the gear are fixedly installed on the outer surface of the arc-shaped block.

[0011] Preferably, a spring shaft is provided on the surface of the rotating block. The rotating block is rotatably connected to the rotating groove through the spring shaft. Slots are formed on the side surfaces of the arc-shaped block and the rotating block, and a pin for fixing the rotating block is inserted into the slot.

[0012] By adopting the above technical solution, after the pin is inserted into the slot, it is used to fix the rotating block.

[0013] Preferably, a notch is formed on the end surface of the extraction rack. An elastic piece for locking the bracket body is rotatably connected inside the notch. An elastic return shaft is arranged between the elastic piece and the notch. The elastic piece is rotatably connected to the notch through the elastic return shaft, and a dial is fixedly installed on the surface of the elastic piece.

[0014] By adopting the above technical solution, when the arc-shaped plate contacts the position to be welded with the shovel plate, the pushing of the bracket body is stopped, and then the bracket body is clamped and fixed by the elastic piece.

[0015] Preferably, a first motor is fixedly installed on the surface of one of the moving frames. The output end of the first motor is fixedly connected to a rotating shaft. Splines and key barrels are respectively fixedly installed at one ends of the two rotating shafts, and the splines and key barrels are matched and inserted.

[0016] By adopting the above technical solution, through the design of the splines and key barrels, when the two moving frames move towards each other or in opposite directions, the power transmission of the rotating shaft can be ensured.

[0017] Preferably, a roller is rotatably connected to the inner bottom surface of the placement groove. When the bracket body moves in the placement groove through the roller, the movement of the bracket body is made more stable and smooth.

[0018] Preferably, counterweight frames are fixedly installed on both side surfaces of the base. The counterweight frames are used for the overall balance of the device. A placement buckle is fixedly installed on the surface of one of the storage frames, and the welding gun is placed on the surface of the storage frame through the placement buckle.

[0019] By adopting the above technical solution, the counterweight frames ensure more stability during the welding process of the large bulldozer blade.

[0020] Preferably, a bidirectional lead screw is rotatably connected inside the base, and the surface of the bidirectional lead screw is threadedly connected to the two moving frames.

[0021] By adopting the above technical solution, when the second motor rotates to drive the bidirectional lead screw to rotate, the two moving frames move towards each other or in opposite directions, so that the two arc-shaped blocks move along with the moving frames. According to the specifications of the shovel plate, the two arc-shaped blocks are adjusted to adapt to the shovel plate, thereby increasing the versatility and practical production applicability of the device.

[0022] Preferably, a second motor is fixedly installed on one end surface of the base, and the output end of the second motor is fixedly connected to one end of a bidirectional lead screw.

[0023] By adopting the above technical solution, the rotation of the second motor can adjust the adaptation between the two arc-shaped blocks and the shovel plate.

[0024] Compared with the prior art, the beneficial effects of the present invention are:

[0025] 1) When the welding device for the bulldozer shovel support of the present excavator is in use, the shovel plate is lifted by an external hoisting device and placed on the surfaces of the two arc-shaped blocks. After being placed on the surfaces of the arc-shaped blocks, the shovel plate is fixed through the card slots. The two gears rotate to drive the arc-shaped teeth to rotate, so that the two arc-shaped blocks rotate to drive the shovel plate to flip. Then, the two support bodies are placed into the two placement grooves. By pushing the support bodies towards the shovel plate by personnel, at this time, the support bodies move on the surfaces of the rollers to drive the arc-shaped plates to move. When the arc-shaped plates contact the positions where the shovel plate needs to be welded, the elastic pieces clamp and fix the support bodies. At this time, the arc-shaped plates and the shovel plate are in mutual matching contact. Then, the operator picks up the welding gun and welds the contact parts between the arc-shaped plates and the shovel plate. Compared with the traditional welding process, this welding device improves the welding precision of the contact parts between the arc-shaped plates and the shovel plate, thereby improving the welding speed and welding quality, and reducing the labor intensity of workers.

[0026] 2) When the welding device for the bulldozer shovel support of the present excavator is in use, during the welding process of the shovel plate and the support body, the stability of the shovel plate and the support body is always maintained, so as to realize the smoothness of the contact part between the shovel plate and the arc-shaped plate. When the welding gun welds the contact part between the shovel plate and the arc-shaped plate, the smoothness during the welding process is ensured, and the welding precision of the contact part between the arc-shaped plate and the shovel plate is further improved.

[0027] 3) When the welding device for the bulldozer shovel support of the present excavator is in use, the second motor rotates to drive the bidirectional lead screw to rotate, so that the two moving frames move towards each other or in opposite directions, and the two arc-shaped blocks move along with the moving frames. According to the specifications of the shovel plate, the adaptation between the two arc-shaped blocks and the shovel plate is adjusted, thereby increasing the versatility and practicality of the device in actual production. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 is a schematic diagram of the position structure of the base and the moving frame of the present invention;

[0030] Figure 3 is a schematic diagram of the position structure of the arc-shaped frame and the arc-shaped blocks of the present invention;

[0031] Figure 4Schematic diagram of the positions of the rotating groove and the rotating block of the present invention;

[0032] Figure 5 Schematic diagram of the position of the arc-shaped teeth of the present invention;

[0033] Figure 6 Schematic diagram of the rotating block structure of the present invention;

[0034] Figure 7 Schematic diagram of the mating structure of the spline and the key barrel of the present invention;

[0035] Figure 8 Schematic diagram of the placement position of the bracket body of the present invention;

[0036] Figure 9 Schematic diagram of the opening position of the placement groove of the present invention.

[0037] Explanation of the reference numerals in the figure: 1. Base; 2. Moving frame; 3. Arc-shaped frame; 4. Arc-shaped sliding groove; 5. Arc-shaped block; 6. Pulley device; 7. Rotating groove; 8. Rotating block; 9. Card slot; 10. Shoveling plate; 11. Fixed frame; 12. Storage rack; 13. Pulling rack; 14. Placement groove; 15. Elastic sheet; 16. Slotted opening; 17. Rotating shaft; 18. Gear; 19. Arc-shaped teeth; 20. Spring shaft; 21. Slot; 22. Pin; 23. Notch; 24. Elastic reset shaft; 25. Paddle; 26. Roller; 27. Welding gun; 28. Placement buckle; 29. Bracket body; 30. Arc-shaped plate; 31. Spline; 32. Key barrel; 33. First motor; 34. Bi-directional lead screw; 35. Second motor; 36. Counterweight frame. Detailed implementation manners

[0038] Example 1: Please refer to Figure 1 - Figure 9, An earthmoving shovel support welding device for an excavator, comprising a base 1. Inside the base 1, two slidable moving frames 2 are correspondingly arranged. The moving frames 2 match the base 1 to ensure a stable movement process of the moving frames 2 within the base 1. On the top surface of any one of the moving frames 2, two arc-shaped frames 3 are fixedly installed correspondingly. The arc-shaped frames 3 are semi-circular arc frames. A matching arc-shaped block 5 is slidably connected to the surfaces of the two arc-shaped frames 3. The arc-shaped block 5 moves around the center of the semi-circular arc frame. A shovel plate 10 is placed on the surfaces of the two arc-shaped blocks 5. The shovel plate 10 is a conventional shovel arc plate in the prior art. On the inner side surface of any one of the arc-shaped blocks 5, two rotating grooves 7 are correspondingly opened. Inside the rotating grooves 7, rotating blocks 8 are rotatably connected. On the end surface of the rotating block 8, a clamping groove 9 for fixing and limiting the shovel plate 10 is opened. On the side surface of any one of the moving frames 2, a fixing frame 11 is fixedly installed. A receiving frame 12 is fixedly connected to the surfaces of the two fixing frames 11. A matching pulling frame 13 is slidably connected to the inside of the two receiving frames 12. A placing groove 14 is opened on the surface of the pulling frame 13. According to the welding position of the shovel plate 10, the pulling frame 13 is pulled so that the position of the placing groove 14 corresponds to the welding position of the shovel plate 10. A support body 29 is placed inside the placing groove 14. On the end surface of one end of the two support bodies 29, arc-shaped plates 30 matching the shovel plate 10 are fixedly installed. A welding gun 27 is placed on the surface of one of the receiving frames 12. The welding gun 27 is a conventional welding head in the prior art. The shovel plate 10 is lifted by an external hoisting device and placed on the surfaces of the two arc-shaped blocks 5. After being placed on the surfaces of the arc-shaped blocks 5, the shovel plate 10 is fixed by the clamping groove 9. The two gears 18 rotate to drive the arc-shaped teeth 19 to rotate, and then the two arc-shaped blocks 5 rotate to drive the shovel plate 10 to flip. Then, the two support bodies 29 are placed inside the two placing grooves 14. By a person pushing the support body 29 towards the shovel plate 10, at this time, the support body 29 moves on the surface of the roller 26 to drive the arc-shaped plate 30 to move. When the arc-shaped plate 30 contacts the position where the shovel plate 10 needs to be welded, the elastic piece 15 clamps and fixes the support body 29. At this time, the arc-shaped plate 30 and the shovel plate 10 are in mutual matching contact. Then, the person picks up the welding gun 27 and welds the contact part between the arc-shaped plate 30 and the shovel plate 10. Compared with the traditional welding process, this welding device improves the welding precision of the contact part between the arc-shaped plate 30 and the shovel plate 10, thereby improving the welding speed and welding quality, and reducing the labor intensity of workers; during the welding process of the shovel plate 10 and the support body 29 by this device, the stability of the shovel plate 10 and the support body 29 is always maintained, thereby realizing the stability of the contact part between the shovel plate 10 and the arc-shaped plate 30. When the welding gun 27 welds the contact part between the shovel plate 10 and the arc-shaped plate 30, the stability during the welding process is ensured, and the welding precision of the contact part between the arc-shaped plate 30 and the shovel plate 10 is further improved.

[0039] An arc-shaped chute 4 is provided on the surface of any one of the arc-shaped frames 3. A pulley device 6 is provided between the arc-shaped chute 4 and the arc-shaped block 5. The arc-shaped block 5 is slidably connected to the arc-shaped frame 3 through the cooperation of the pulley device 6 with the arc-shaped chute 4. The setting of the pulley device 6 ensures that the arc-shaped block 5 moves more smoothly on the surface of the arc-shaped frame 3.

[0040] A slot 16 is provided inside any one of the movable frames 2. A rotating shaft 17 is rotatably connected to the inner wall of the slot 16. A gear 18 is coaxially and fixedly installed on the surface of the rotating shaft 17. An arc-shaped tooth 19 meshing with the gear 18 is fixedly installed on the outer surface of the arc-shaped block 5.

[0041] A spring shaft 20 is provided on the surface of the rotating block 8. The spring shaft 20 is a conventional spring shaft 20 in the prior art. The rotating block 8 is rotatably connected to the rotating slot 7 through the spring shaft 20. Insertion slots 21 are provided on the side surfaces of the arc-shaped block 5 and the rotating block 8. A pin 22 for fixing the rotating block 8 is inserted into the insertion slot 21. After the pin 22 is inserted into the insertion slot 21, it is used to fix the rotating block 8.

[0042] A notch 23 is provided on the end surface of the extraction frame 13. An elastic piece 15 for locking the bracket body 29 is rotatably connected inside the notch 23. The elastic piece 15 is a conventional elastic piece 15 in the prior art. An elastic return shaft 24 is provided between the elastic piece 15 and the notch 23. The elastic piece 15 is rotatably connected to the notch 23 through the elastic return shaft 24. A dial 25 is fixedly installed on the surface of the elastic piece 15. When the arc-shaped plate 30 contacts the position to be welded with the shovel plate 10, the pushing of the bracket body 29 is stopped, and then the bracket body 29 is clamped and fixed through the elastic piece 15.

[0043] A first motor 33 is fixedly installed on the surface of one of the movable frames 2. The first motor 33 is a conventional forward and reverse motor in the prior art. The output end of the first motor 33 is fixedly connected to the rotating shaft 17. A spline 31 and a key barrel 32 are respectively fixedly installed at one ends of the two rotating shafts 17. The spline 31 and the key barrel 32 are matched and inserted. Through the design of the spline 31 and the key barrel 32, the two movable frames 2 moving towards each other or in opposite directions can ensure the power transmission of the rotating shaft 17.

[0044] A roller 26 is rotatably connected to the inner bottom surface of the placement groove 14. When the bracket body 29 moves in the placement groove 14 through the roller 26, the movement of the bracket body 29 becomes more stable and smooth.

[0045] Counterweight frames 36 are fixedly installed on both side surfaces of the base 1. The counterweight frames 36 are used for the overall balance of the device. A placement buckle 28 is fixedly installed on the surface of one of the storage frames 12. The welding gun 27 is placed on the surface of the storage frame 12 through the placement buckle 28.

[0046] Usage steps of the present invention: When the dozer blade support welding device of this excavator is in use, first pull out the pin 22 from the slot 21. At this time, the rotating block 8 rotates under the action of the spring shaft 20. Lift the blade 10 by an external hoisting device and place it on the surfaces of the two arc-shaped blocks 5. During the placement process, the blade 10 presses against the rotating block 8. At this time, the rotating block 8 rotates and is received into the rotating groove 7. When the rotating block 8 is not pressed, the rotating block 8 resets, and the clamping groove 9 fixes the surface of the blade 10. The first motor 33 rotates to drive the rotating shaft 17 to rotate. Through the mutual matching and insertion of the spline 31 and the key barrel 32, the two gears 18 rotate to drive the arc-shaped teeth 19 to rotate, and then the two arc-shaped blocks 5 rotate to drive the blade 10 to flip. According to the welding position of the blade 10, pull out the pulling frame 13 so that the position of the placement groove 14 corresponds to the welding position of the blade 10. Then place the two bracket bodies 29 into the two placement grooves 14. Push the bracket body 29 in the direction of the blade 10 by personnel. At this time, the bracket body 29 moves on the surface of the roller 26 to drive the arc-shaped plate 30 to move. When the arc-shaped plate 30 contacts the position where the blade 10 needs to be welded, stop pushing the bracket body 29. Then clamp and fix the bracket body 29 through the elastic piece 15. At this time, the arc-shaped plate 30 and the blade 10 are in mutual matching contact. Then the operator picks up the welding gun 27 and welds the contact part between the arc-shaped plate 30 and the blade 10. After welding is completed, first turn the rotating block 8 outwards so that the clamping groove 9 is separated from the blade 10, and then hoist the welded dozer blade by an external hoisting device. This scheme lifts the blade 10 by an external hoisting device and places it on the surfaces of the two arc-shaped blocks 5. After being placed on the surfaces of the arc-shaped blocks 5, the blade 10 is fixed by the clamping groove 9. The two gears 18 rotate to drive the arc-shaped teeth 19 to rotate, and then the two arc-shaped blocks 5 rotate to drive the blade 10 to flip. Then place the two bracket bodies 29 into the two placement grooves 14. Push the bracket body 29 in the direction of the blade 10 by personnel. At this time, the bracket body 29 moves on the surface of the roller 26 to drive the arc-shaped plate 30 to move. When the arc-shaped plate 30 contacts the position where the blade 10 needs to be welded, the elastic piece 15 clamps and fixes the bracket body 29. At this time, the arc-shaped plate 30 and the blade 10 are in mutual matching contact. Then the operator picks up the welding gun 27 and welds the contact part between the arc-shaped plate 30 and the blade 10. Compared with the traditional welding process, this welding device improves the welding precision of the contact part between the arc-shaped plate 30 and the blade 10, thereby improving the welding speed and welding quality, and reducing the labor intensity of workers; during the welding process of the blade 10 and the bracket body 29, the stability of the blade 10 and the bracket body 29 is always maintained, thereby realizing the smoothness of the contact part between the blade 10 and the arc-shaped plate 30. When the welding gun 27 welds the contact part between the blade 10 and the arc-shaped plate 30, the smoothness during the welding process is ensured, and the welding precision of the contact part between the arc-shaped plate 30 and the blade 10 is further improved.

[0047] Embodiment 2: Please refer toFigure 1 - Figure 9 Differing from the basis of Embodiment 1, a bidirectional lead screw 34 is rotatably connected inside the base 1. The surface of the bidirectional lead screw 34 is threadedly connected to the two moving frames 2. By rotating the bidirectional lead screw 34 driven by the second motor 35, the two moving frames 2 move towards each other or in opposite directions, causing the two arc-shaped blocks 5 to move along with the moving frames 2. According to the specifications of the shovel plate 10, the two arc-shaped blocks 5 are adjusted to adapt to the shovel plate 10, thereby increasing the versatility and practical production applicability of the device.

[0048] A second motor 35 is fixedly installed on one end surface of the base 1. The second motor 35 is a conventional forward and reverse motor in the prior art. The output end of the second motor 35 is fixedly connected to one end of the bidirectional lead screw 34. The rotation of the second motor 35 can adjust the two arc-shaped blocks 5 to adapt to the shovel plate 10.

[0049] Usage steps of the present invention: When this welding device for the bulldozer shovel support of an excavator is in use, the sizes of existing excavators are different, and the sizes of the installed bulldozer shovels are also different. When welding shovel plates 10 of different sizes, by rotating the bidirectional lead screw 34 driven by the second motor 35, the two moving frames 2 move towards each other or in opposite directions, causing the two arc-shaped blocks 5 to move along with the moving frames 2, ensuring that the distance between the two arc-shaped blocks 5 can be suitable for the length of the shovel plate 10. This solution rotates the bidirectional lead screw 34 driven by the second motor 35, thereby causing the two moving frames 2 to move towards each other or in opposite directions, causing the two arc-shaped blocks 5 to move along with the moving frames 2. According to the specifications of the shovel plate 10, the two arc-shaped blocks 5 are adjusted to adapt to the shovel plate 10, thereby increasing the versatility and practical production applicability of the device.

[0050] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification are only preferred examples of the present invention and are not used to limit the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. An earthmoving shovel support welding device for an excavator, comprising a base (1), characterized in that: Inside the base (1), there are two slidable moving frames (2) correspondingly arranged. On the top surface of any one of the moving frames (2), two arc-shaped frames (3) are fixedly installed correspondingly. The surfaces of the two arc-shaped frames (3) are jointly slidably connected with an arc-shaped block (5) that matches them. On the surfaces of the two arc-shaped blocks (5), a shovel plate (10) is placed. On the inner side surface of any one of the arc-shaped blocks (5), two rotating grooves (7) are correspondingly opened. Inside the rotating groove (7), a rotating block (8) is rotatably connected. On the end surface of the rotating block (8), a clamping groove (9) for fixedly limiting the shovel plate (10) is opened. On the side surface of any one of the moving frames (2), a fixed frame (11) is fixedly installed. The surfaces of the two fixed frames (11) are fixedly connected with a storage rack (12). Inside the two storage racks (12), a drawer rack (13) that matches them is slidably connected. On the surface of the drawer rack (13), a placement groove (14) is opened. Inside the placement groove (14), a bracket body (29) is placed. On the end surfaces of one ends of the two bracket bodies (29), arc-shaped plates (30) that match the shovel plate (10) are fixedly installed. On the surface of one of the storage racks (12), a welding gun (27) is placed; On the surface of the rotating block (8), a spring shaft (20) is arranged. The rotating block (8) is rotatably connected with the rotating groove (7) through the spring shaft (20). On the side surfaces of the arc-shaped block (5) and the rotating block (8), inserting slots (21) are opened. Inside the inserting slots (21), a pin (22) for fixing the rotating block (8) is inserted; On the end surface of the drawer rack (13), a notch (23) is opened. Inside the notch (23), an elastic sheet (15) for locking the bracket body (29) is rotatably connected. Between the elastic sheet (15) and the notch (23), an elastic reset shaft (24) is arranged. The elastic sheet (15) is rotatably connected with the notch (23) through the elastic reset shaft (24). On the surface of the elastic sheet (15), a dial (25) is fixedly installed; On the surface of one of the moving frames (2), a first motor (33) is fixedly installed. The output end of the first motor (33) is fixedly connected with a rotating shaft (17). On one ends of the two rotating shafts (17), a spline (31) and a key barrel (32) are respectively fixedly installed. The spline (31) and the key barrel (32) are inserted and matched with each other.

2. The welding device for the bulldozer blade support of an excavator according to claim 1, characterized in that: On the surface of any one of the arc-shaped frames (3), an arc-shaped sliding groove (4) is opened. Between the arc-shaped sliding groove (4) and the arc-shaped block (5), a pulley device (6) is arranged. The arc-shaped block (5) is slidably connected with the arc-shaped frame (3) through the cooperation of the pulley device (6) and the arc-shaped sliding groove (4).

3. The welding device for the earth-moving shovel support of an excavator according to claim 1, characterized in that: Inside any one of the moving frames (2), a slot (16) is opened. On the inner wall of the slot (16), a rotating shaft (17) is rotatably connected. On the surface of the rotating shaft (17), a gear (18) is coaxially fixedly installed. On the outer surface of the arc-shaped block (5), an arc-shaped tooth (19) that meshes with the gear (18) is fixedly installed.

4. The welding device for the earth-moving shovel support of an excavator according to claim 1, characterized in that: The inner bottom surface of the placement groove (14) is rotatably connected with a roller (26). When the bracket body (29) moves in the placement groove (14) through the roller (26), the movement of the bracket body (29) becomes more stable and smooth.

5. The welding device for the earth-moving shovel support of an excavator according to claim 1, wherein: Both side surfaces of the base (1) are fixedly equipped with counterweight frames (36). The counterweight frames (36) are used for the overall balance of the device. A placement buckle (28) is fixedly installed on the surface of one of the storage racks (12). The welding gun (27) is placed on the surface of the storage rack (12) through the placement buckle (28).

6. The welding device for the earthmoving blade bracket of an excavator according to claim 5, characterized in that: A bidirectional lead screw (34) is rotatably connected inside the base (1). The surface of the bidirectional lead screw (34) is threadedly connected to the two moving frames (2).

7. The welding device for the bulldozer blade support of an excavator according to claim 6, characterized in that: A second motor (35) is fixedly installed on one end surface of the base (1). The output end of the second motor (35) is fixedly connected to one end of the bidirectional lead screw (34).

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