A thermal spraying device for repairing a rotating shaft of an electric machine

Abstract

The utility model relates to the field of thermal spraying discloses a kind of thermal spraying devices for motor rotating shaft repair, including support, the top of the support is fixedly connected with connecting frame, the outer wall of connecting frame is hinged with hinge, the outer wall of connecting frame is provided with connecting mechanism, the connecting mechanism includes slider A, the inner wall of slider A is slidably connected in the outer wall of connecting frame, the outer wall of slider A is fixedly connected with connecting plate, the extension end of slider A is fixedly connected with slider B, the inner wall of connecting plate is fixedly connected with flame gun head, the top of flame gun head is fixedly connected with connecting pipe.In the utility model, four groups of slider A and slider B of connecting mechanism are slid along connecting frame, cooperating connecting plate drives flame gun head to move, and the meshing design of gear ring and tooth block, both through rotating gear ring realizes the synchronous position adjustment of four groups of flame gun head, finally ensure that motor rotating shaft is evenly heated when thermal spraying.

Description

Technical Field

[0001] This utility model relates to the field of thermal spraying, and in particular to a thermal spraying device for repairing motor shafts. Background Technology

[0002] The thermal spraying device for motor shaft repair is a specialized device that uses thermal spraying technology to spray molten coating material onto the surface of a damaged motor shaft through a high-speed airflow, thereby achieving shaft dimensional repair, surface strengthening, or defect filling. It is widely used in the fields of motor maintenance and component repair, and can extend the service life of motor shafts and reduce equipment replacement costs.

[0003] When repairing a motor shaft using existing thermal spraying equipment, the process typically involves first removing the motor shaft from the motor body, transporting it to a designated work area, and securing it to a rotating worktable. Then, the position and angle of the thermal spray gun are adjusted according to the extent of the shaft damage, ensuring the nozzle is aligned with the area to be repaired. Simultaneously, the fuel supply line and compressed air line are connected. The rotating worktable is then started to rotate the motor shaft at a uniform speed. The thermal spray gun is then activated, and the internal combustion mechanism heats the coating material to a molten state. Under the action of compressed air, the molten material forms a high-speed jet of particles that evenly covers the shaft surface. During spraying, the operator manually controls the thermal spray gun to move slowly along the shaft axis to ensure uniform coating thickness. Once the preset thickness is achieved, the thermal spray gun and rotating worktable are turned off sequentially. The repair work is completed after the coating cools.

[0004] During the above-mentioned use, the position and movement of the thermal spray gun mainly rely on manual control, which makes it difficult to ensure that the gun head and the surface of the rotating shaft maintain a constant distance. This can easily lead to uneven coating thickness and poor uniformity of heating and coating material adhesion on the rotating shaft surface. Therefore, a thermal spraying device for motor shaft repair has been developed to address the above-mentioned problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a thermal spraying device for repairing motor shafts, aiming to solve the problem in the prior art that "the position and movement of the thermal spraying gun mainly depend on manual control, which easily leads to uneven coating thickness and poor uniformity of heating and coating material adhesion on the shaft surface".

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a thermal spraying device for repairing motor shafts, comprising a bracket, a connecting frame fixedly connected to the top of the bracket, a hinge hinged to the outer wall of the connecting frame, and a connecting mechanism provided on the outer wall of the connecting frame;

[0007] The connecting mechanism includes a slider A, the inner wall of which is slidably connected to the outer wall of the connecting frame, a connecting plate fixedly connected to the outer wall of the slider A, a slider B fixedly connected to the extension end of the slider A, a flame gun head fixedly connected to the inner wall of the connecting plate, and a connecting pipe fixedly connected to the top of the flame gun head.

[0008] As a further description of the above technical solution: the inner wall of the slider B is provided with a groove, the inner wall of the groove is rotatably connected to a screw, the outer wall of the screw is threadedly connected to a threaded slider, and the outer wall of the threaded slider is fixedly connected to a toothed block.

[0009] As a further description of the above technical solution: the inner wall of the slider B is fixedly connected to a limiting rod, and the inner wall of the toothed block is slidably connected to the outer wall of the limiting rod.

[0010] As a further description of the above technical solution: the number of the connecting mechanisms is four sets, and the four sets of connecting mechanisms are arranged in a ring around the outer wall of the connecting frame at equal intervals.

[0011] As a further description of the above technical solution: the connecting frame is arranged in two sections, the connecting frames are hinged to each other by hinges, and the inner wall of the interface end of the connecting frame is threaded with bolts.

[0012] As a further description of the above technical solution: a toothed ring is inserted into the outer wall of the toothed block, and the toothed ring is arranged in two sections and is hinged to each other by a hinge.

[0013] As a further description of the above technical solution: the tooth block is arc-shaped, and the teeth on the inner wall of the tooth block mesh with the teeth on the outer wall of the tooth ring.

[0014] As a further description of the above technical solution: the bottom of the bracket is triangular, and a motor shaft is provided inside the ring of the connecting frame.

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

[0016] 1. In this utility model, the four sets of sliders A and B of the connecting mechanism slide along the connecting frame, and together with the connecting plate, drive the flame gun head to move. The meshing design of the toothed ring and the toothed block realizes the synchronous position adjustment of the four sets of flame gun heads by rotating the toothed ring, which ultimately ensures that the motor shaft is heated evenly during thermal spraying.

[0017] 2. In this utility model, by rotating the screw, the toothed block moves along the limiting rod and disengages from the toothed ring, thereby realizing the independent adjustment of a single flame gun head. At the same time, the four sets of equally spaced flame gun heads, together with the fuel transported by the connecting pipe, meet the repair needs of different positions and improve repair efficiency and quality. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the overall structure of a thermal spraying device for repairing motor shafts proposed in this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the connecting frame of the thermal spraying device for repairing motor shafts proposed in this utility model;

[0020] Figure 3 This is a schematic diagram of the connecting frame structure of a thermal spraying device for repairing motor shafts proposed in this utility model;

[0021] Figure 4 This is a schematic diagram of the connection mechanism of a thermal spraying device for repairing motor shafts proposed in this utility model;

[0022] Figure 5 This is a schematic diagram of the gear ring structure of a thermal spraying device for repairing motor shafts proposed in this utility model.

[0023] Legend:

[0024] 1. Bracket; 2. Connecting frame; 3. Hinge; 4. Bolt; 5. Connecting mechanism; 511. Slider A; 512. Connecting plate; 513. Slider B; 514. Groove; 515. Screw; 516. Threaded slider; 517. Tooth block; 518. Limiting rod; 6. Flame gun head; 7. Connecting pipe; 8. Toothed ring; 9. Motor shaft. Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0026] Reference Figures 1-3This utility model provides an embodiment of a thermal spraying device for repairing motor shafts, comprising a bracket 1. The bracket 1 is triangular in shape to enhance the overall stability of the device. A connecting frame 2 is fixedly connected to the top of the bracket 1, providing a base for the installation and movement of the flame gun head 6. A hinge 3 is hinged to the outer wall of the connecting frame 2, allowing the connecting frame 2 to open and close flexibly for fitting the motor shaft 9. A connecting mechanism 5 is provided on the outer wall of the connecting frame 2, used for installing and adjusting the position of the flame gun head 6. The connecting mechanism 5 includes a slider A511, which can slide along the connecting frame 2 to adjust the position of the flame gun head 6. The inner wall of the slider A511 is slidably connected to the outer wall of the connecting frame 2. A connecting plate 512 is fixedly connected to the outer wall of the slider A511, used for fixing the slider A511 and the flame gun head 6. A slider B513 is fixedly connected to the extension end of the slider A511, which moves synchronously with the slider A511 and is used for installing teeth. Block 517, the inner wall of the connecting plate 512 is fixedly connected to a flame gun head 6, the flame gun head 6 is the executing component for thermal spraying, the top of the flame gun head 6 is fixedly connected to a connecting pipe 7, the connecting pipe 7 is used to transport the fuel required for thermal spraying, the connecting frame 2 is set in two sections, the connecting frame 2 is hinged to each other by a hinge 3, the inner wall of the interface end of the connecting frame 2 is threaded with a bolt 4, the bolt 4 is used to fix the two sections of the connecting frame 2 when closing the connecting frame 2, and a toothed ring 8 is inserted into the outer wall of the toothed block 517, the tooth... The rotation of ring 8 can drive the toothed block 517 to move synchronously. The toothed ring 8 is set in two sections and is hinged to each other by hinge 3. The toothed ring 8 is easy to fit the motor shaft 9 and can cooperate with the toothed block 517 to achieve synchronous adjustment. The toothed block 517 is arc-shaped, and the teeth on the inner wall of the toothed block 517 mesh with the teeth on the outer wall of the toothed ring 8. The meshing of the toothed block 517 and the toothed ring 8 can realize the linkage between the two. The bottom of the bracket 1 is triangular, and the motor shaft 9 is set in the ring of the connecting frame 2. The motor shaft 9 is the object of thermal spraying repair.

[0027] Reference Figures 3-5 The inner wall of slider B513 has a slot 514, which provides installation space for screw 515. Screw 515 is rotatably connected to the inner wall of slot 514. Rotation of screw 515 can drive threaded slider 516 to move. Threaded slider 516 is threadedly connected to the outer wall of screw 515. Movement of threaded slider 516 can drive toothed block 517 to move. Toothed block 517 is fixedly connected to the outer wall of threaded slider 516. Toothed block 517 can be synchronously adjusted or individually adjusted by meshing or disengaging with toothed ring 8. Limit rod 518 is fixedly connected to the inner wall of slider B513. Limit rod 518 is used to limit the movement direction of toothed block 517. The inner wall of toothed block 517 is slidably connected to the outer wall of limit rod 518. There are four sets of connecting mechanisms 5. The four sets of connecting mechanisms 5 are arranged in an evenly spaced ring on the outer wall of connecting frame 2. The four sets of connecting mechanisms 5 can ensure that the motor shaft 9 is heated evenly.

[0028] Working principle: When in use, the staff first place the triangular bracket 1 at the bottom of the motor shaft 9 to ensure the overall stability of the device. Then, by loosening the bolt 4 that is threaded on the inner wall of the interface end of the connecting frame 2, the two-section connecting frame 2 is opened using the hinge 3, so that the motor shaft 9 passes through the connecting frame 2 and is in its ring. Then, the connecting frame 2 is closed and the bolt 4 is tightened again to complete the fixation.

[0029] At the same time, the toothed ring 8, which is also in two sections and is hinged by the hinge 3, is opened and fitted onto the outside of the motor shaft 9, and then the toothed ring 8 is closed so that it is in an appropriate position inside the connecting frame 2. When the motor shaft 9 is inconvenient to disassemble, the thermal spraying operation can begin. If the position of the flame gun head 6 needs to be adjusted synchronously, the operator can rotate the gear ring 8 according to the position of the motor shaft 9 that needs to be thermally sprayed. Since the teeth on the inner wall of the toothed block 517 on the four sets of sliders B513 of the connecting mechanism 5 mesh with the teeth on the outer wall of the gear ring 8, and the toothed block 517 is arc-shaped, the rotation of the gear ring 8 will drive the four sets of toothed blocks 517 to move synchronously. Then, through the threaded slider 516, screw 515 and slot 514, the slider B513 will slide along the outer wall of the connecting frame 2. When the slider B513 moves, it will drive the slider A511 fixedly connected to it to slide synchronously on the outer wall of the connecting frame 2. The slider A511 will drive the flame gun head 6 to move through the connecting plate 512, so as to realize the synchronous adjustment of the position of the four sets of flame gun heads 6. The uniformity of heating during the thermal spraying of the motor shaft 9 is ensured by the four sets of equally spaced flame gun heads 6.

[0030] When the position of a single slider A511 needs to be adjusted, the operator can rotate the screw 515 rotatably connected in the groove 514 on the inner wall of slider B513, causing the threaded slider 516, which is threadedly connected to the outer wall of the screw 515, to move along the screw 515. The threaded slider 516 drives the toothed block 517 to slide along the limiting rod 518 fixedly connected to the inner wall of slider B513 until the outer wall of the toothed block 517 disengages from the outer wall of the toothed ring 8 and the teeth no longer mesh. At this point, the positions of slider A511 and slider B513 can be moved separately. After adjusting to the appropriate position, the screw 515 is rotated in the opposite direction to make the toothed block 517 re-mesh and fix with the toothed ring 8. Then, fuel is introduced through the connecting pipe 7 fixedly connected to the top of the flame gun head 6, and the flame gun head 6 is started to perform thermal spraying repair work on the motor shaft 9.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A thermal spraying device for repairing a rotating shaft of an electric machine, comprising a support (1), characterized in that: The top of the bracket (1) is fixedly connected to a connecting frame (2), the outer wall of the connecting frame (2) is hinged with a hinge (3), and the outer wall of the connecting frame (2) is provided with a connecting mechanism (5); The connecting mechanism (5) includes a slider A (511), the inner wall of which is slidably connected to the outer wall of the connecting frame (2), a connecting plate (512) is fixedly connected to the outer wall of the slider A (511), a slider B (513) is fixedly connected to the extended end of the slider A (511), a flame gun head (6) is fixedly connected to the inner wall of the connecting plate (512), and a connecting pipe (7) is fixedly connected to the top of the flame gun head (6).

2. A thermal spraying apparatus for repairing a rotating shaft of an electric machine according to claim 1, characterized in that: The inner wall of the slider B (513) is provided with a slot (514), and a screw (515) is rotatably connected to the inner wall of the slot (514). A threaded slider (516) is threadedly connected to the outer wall of the screw (515), and a toothed block (517) is fixedly connected to the outer wall of the threaded slider (516).

3. A thermal spraying apparatus for repairing a rotating shaft of an electric machine according to claim 2, characterized in that: The inner wall of the slider B (513) is fixedly connected to the limiting rod (518), and the inner wall of the toothed block (517) is slidably connected to the outer wall of the limiting rod (518).

4. The thermal spraying apparatus for repairing a rotating shaft of an electric machine according to claim 1, characterized in that: The number of the connecting mechanisms (5) is four sets, and the four sets of connecting mechanisms (5) are arranged in a ring around the outer wall of the connecting frame (2) at equal intervals.

5. A thermal spraying apparatus for repairing a rotating shaft of an electric machine according to claim 1, characterized in that: The connecting frame (2) is arranged in two sections. The connecting frame (2) is hinged to each other by a hinge (3). The inner wall of the interface end of the connecting frame (2) is threaded with a bolt (4).

6. A thermal spraying apparatus for repairing a rotating shaft of an electric machine according to claim 2, characterized in that: A toothed ring (8) is inserted into the outer wall of the toothed block (517). The toothed ring (8) is arranged in two sections and is hinged to each other by a hinge (3).

7. A thermal spraying apparatus for repairing a rotating shaft of an electric machine according to claim 2, characterized in that: The tooth block (517) is arc-shaped, and the teeth on the inner wall of the tooth block (517) mesh with the teeth on the outer wall of the tooth ring (8).

8. A thermal spraying apparatus for repairing a rotating shaft of an electric machine according to claim 1, characterized in that: The bottom of the bracket (1) is triangular, and a motor shaft (9) is provided inside the ring of the connecting frame (2).

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