Laser repairing equipment for gear tooth surface fatigue cracks

Abstract

The invention relates to the technical field of gear laser repairing, in particular to gear tooth surface fatigue crack laser repairing equipment which comprises a base, a connecting cavity is formed in the upper end of the base, a connecting disc is arranged in the connecting cavity, a supporting mechanism is arranged at the upper end of the connecting disc, and a gear is supported through the supporting mechanism; a plurality of clamping mechanisms are arranged in the upper end of the connecting disc, the lower ends of the clamping mechanisms extend out of the connecting disc to be fixedly connected with pull ropes, and the pull ropes are fixedly installed at the lower end of the connecting cavity; the gear to be repaired is clamped through the clamping mechanism, the gear is fed to the upper end of the base through the connecting disc, the tooth surface of the gear is repaired through the laser repairing mechanism, after repairing is completed, the connecting disc moves downwards, clamping of the gear is canceled through the clamping mechanism, and when a new gear is added again through the pushing mechanism, the gear is repaired. And the repaired gear is pushed out of the base through the guide cavity, an operator does not need to manually and frequently assemble and disassemble the gear, and operation is convenient, fast and efficient.

Description

Technical Field

[0001] The invention relates to the technical field of gear laser repair, in particular to a laser repair device for gear tooth surface fatigue cracks. Background Art

[0002] Laser shock peening technology is a high-tech technology that uses plasma shock waves generated by strong laser beams to improve the fatigue resistance, wear resistance and corrosion resistance of metal materials. It has outstanding advantages such as non-contact, no heat-affected zone, strong controllability and significant strengthening effect.

[0003] For example, the Chinese patent with announcement number CN112404732A discloses a mold fatigue crack laser repair device, including a base and a support plate, wherein the base is provided with a cavity, a screw is rotatably connected in the cavity, a first gear is fixedly sleeved on the screw, a second gear meshing with the first gear is provided in the cavity, the second gear and the inner wall of the cavity are rotatably connected via a rotating rod, one end of the rotating rod passes through the inner wall of the cavity and is fixedly connected with a knob, one end of the knob is slidably inserted with a clamping rod, and a plurality of clamping grooves corresponding to the clamping rod are arranged around the outer wall of the base.

[0004] However, the above scheme has the following shortcomings: in the above patent, the rotating rod is driven to rotate by turning the knob, the screw is driven to rotate by the meshing of the first gear and the second gear, the support plate is driven to move up and down by the threaded sleeve, and the laser repairer is adjusted to repair the gear tooth surface by the laser repairer. However, when a large number of gear surfaces need to be repaired, the operator is required to manually load and unload the gears frequently, which is cumbersome to operate. For this reason, we have launched a laser repair device for fatigue cracks on gear tooth surfaces. Summary of the invention

[0005] The purpose of the present invention is to provide a laser repair device for fatigue cracks on gear tooth surfaces to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A laser repair device for fatigue cracks on gear tooth surfaces, comprising a base, a connecting cavity is provided in the upper end of the base, a connecting disk is provided in the connecting cavity, a supporting mechanism is provided at the upper end of the connecting disk, the gear is supported by the supporting mechanism, a plurality of clamping mechanisms are provided in the upper end of the connecting disk, the lower end of the clamping mechanism extends out of the connecting disk and is fixedly connected to a pull rope, the pull rope is fixedly installed at the lower end of the connecting cavity, when the pull rope moves upward through the connecting disk, the clamping mechanism is pulled by the pull rope, and the gear is clamped by the pulled clamping mechanisms;

[0008] A laser repair mechanism is fixedly connected to the upper end of the base, and the gear tooth surface is repaired by the laser repair mechanism. A storage mechanism is provided on the upper end of the base, and the gear to be repaired is stored by the storage mechanism. A guide cavity is opened in the base, and one end of the guide cavity is connected to the external environment. A pushing mechanism is movably connected in the guide cavity, and the gear in the storage mechanism is pushed into the upper end of the supporting mechanism by the pushing mechanism. Two telescopic cylinders are fixedly connected to the lower end of the base, and the output end of the telescopic cylinder extends into the connecting cavity and is fixedly connected to the lower end of the connecting plate.

[0009] Preferably, the supporting mechanism comprises a square rod, the square rod is movably connected to the upper end of the connecting plate, the lower end of the square rod extends out of the connecting plate, the upper end of the square rod is fixedly connected to the cross-shaped supporting rod, and the upper end of the connecting plate is provided with a storage groove corresponding to the cross-shaped supporting rod.

[0010] Preferably, the clamping mechanism includes a clamping plate, which is arranged on the upper side of the connecting disk, and the lower end of the clamping plate is fixedly connected to the cross-shaped connecting rod, and the cross-shaped connecting rod is slidably connected in the cross-shaped slide groove, and the cross-shaped slide groove is opened in the upper end of the connecting disk, and a connecting spring is fixedly connected in the cross-shaped slide groove, and the other end of the connecting spring is fixedly connected to the cross-shaped connecting rod.

[0011] Preferably, the lower end of the cross-shaped connecting rod extends out of the connecting plate and is movably connected to an I-shaped rod, one end of the I-shaped rod is fixedly connected to the pull rope, a support spring is sleeved on the outside of the I-shaped rod, one end of the support spring is fixedly connected to the cross-shaped connecting rod, and the other end is fixedly connected to the I-shaped rod.

[0012] Preferably, the laser repair mechanism includes a support column, a first screw rod is movably connected to the upper end of the support column, the upper end of the first screw rod is fixedly connected to the output end of the first motor, the first motor is fixedly installed on the upper end of the support column, a first cross bar is movably sleeved on the outer side of the support column, and the first cross bar is connected to the first screw rod.

[0013] Preferably, a through groove is provided in the upper end of the first cross bar, and a second screw rod is movably connected in the through groove, one end of the second screw rod extends out of the first cross bar and is fixedly connected to the output end of the second motor, a second cross bar is screwed on the outer side of the second screw rod, and a third screw rod is movably connected to the lower end of the second cross bar, a connecting block is screwed on the outer side of the third screw rod, one end of the third screw rod extends out of the second cross bar and is fixedly connected to the output end of the third motor, and the lower end of the connecting block is fixedly connected to the laser repairer.

[0014] Preferably, the storage mechanism comprises a storage box, the storage box is fixedly connected to the upper end of the base, the lower end of the base is communicated with the guide cavity, and the upper end of the storage box is clamped with a box cover.

[0015] Preferably, the pushing material mechanism includes a U-shaped plate, the U-shaped plate is movably connected in the guide cavity, the U-shaped plate is fixedly connected to a folding plate at one end away from the connecting cavity, the folding plate is fixedly connected to the guide cavity at one end away from the U-shaped plate, the inner side of the U-shaped plate is movably connected to a limiting plate, the limiting plate is provided with a stopper close to the side of the U-shaped plate, and the stopper is fixedly connected to the inner side of the U-shaped plate.

[0016] Preferably, a transmission motor is fixedly connected inside the lower end of the U-shaped plate, a transmission gear is fixedly connected to the output end of the transmission motor, the transmission gear is slidably connected in a T-shaped tooth groove, and the T-shaped tooth groove is opened in the lower end of the guide cavity.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention stores the gears to be repaired through a storage mechanism, sends the gears to be repaired to the upper end of the supporting mechanism through a pushing mechanism, clamps the gears to be repaired through a clamping mechanism, sends the gears to the upper end of the base through a connecting disk, repairs the gear tooth surface through a laser repair mechanism, and after the repair is completed, the connecting disk moves downward, the clamping mechanism cancels the clamping of the gear, and when the pushing mechanism adds a new gear again, the repaired gear is pushed out of the base through the guide cavity. There is no need for operators to manually load and unload the gears frequently, and the operation is convenient and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the cross-sectional structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the cross-sectional structure of the connection disk of the present invention;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of the connection relationship between the connecting plate and the cross-shaped support rod of the present invention;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the connection disk of the present invention;

[0022] Figure 5 It is a cross-sectional structural schematic diagram of the connection relationship between the U-shaped plate and the folding plate of the present invention;

[0023] Figure 6 It is a schematic diagram of the top structure of the present invention.

[0024] In the figure: 1. base; 2. connecting cavity; 3. cross-shaped support rod; 4. connecting plate; 5. guide cavity; 6. support column; 7. first screw; 8. first motor; 9. second screw; 10. first cross bar; 11. second cross bar; 12. connecting block; 13. laser repairer; 14. second motor; 15. pull rope; 16. square rod; 17. folding plate; 18. transmission motor; 19. U-shaped plate; 20. storage box; 21. box cover; 22. cross-shaped connecting rod; 23. I-shaped rod; 24. supporting spring; 25. connecting spring; 26. cross-shaped slide groove; 27. third motor; 28. storage groove; 29. ​​clamping plate; 30. transmission gear; 31. T-shaped tooth groove; 32. block; 33. limit plate; 34. through groove; 35. third screw; 36. telescopic cylinder. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] See also Figure 1-6 , the present invention provides a technical solution:

[0027] Embodiment 1:

[0028] A laser repair device for fatigue cracks on gear tooth surfaces, comprising a base 1, a connecting cavity 2 is provided in the upper end of the base 1, a connecting disk 4 is provided in the connecting cavity 2, the connecting disk 4 drives the gear to be repaired to rise and fall, a supporting mechanism is provided at the upper end of the connecting disk 4, the gear is supported by the supporting mechanism, a plurality of clamping mechanisms are provided in the upper end of the connecting disk 4, the lower end of the clamping mechanism extends out of the connecting disk 4 and is fixedly connected to a pull rope 15, the pull rope 15 is fixedly installed at the lower end of the connecting cavity 2, when the connecting disk 4 moves upward, the pull rope 15 pulls the clamping mechanism, and the gear is clamped by the pulled clamping mechanisms, and when the connecting disk 4 moves downward and returns to the initial position, the clamping mechanism releases the clamping of the gear;

[0029] A laser repair mechanism is fixedly connected to the upper end of the base 1, and the gear tooth surface is repaired by the laser repair mechanism. A storage mechanism is provided on the upper end of the base 1, and the gear to be repaired is stored by the storage mechanism. A guide cavity 5 is opened in the base 1, and one end of the guide cavity 5 is connected to the external environment. A pushing mechanism is movably connected in the guide cavity 5, and the gear in the storage mechanism is pushed into the upper end of the supporting mechanism by the pushing mechanism. Two telescopic cylinders 36 are fixedly connected to the lower end of the base 1, and the output end of the telescopic cylinder 36 extends into the connecting cavity 2 and is fixedly connected to the lower end of the connecting disk 4. By opening the two telescopic cylinders 36, the connecting disk 4 connected to its output end is driven to move upward. As the connecting disk 4 moves, the supporting mechanism will cancel the support for the gear, so that the gear will fall into the upper end of the connecting disk 4, and at the same time, the clamping mechanism clamps the gear under the pull of the pull rope 15.

[0030] Embodiment 2:

[0031] On the basis of Example 1, in order to enable the repaired gear to be pushed out of the guide cavity 5, the supporting mechanism includes a square rod 16, which is movably connected to the upper end of the connecting disk 4, and the lower end of the square rod 16 extends out of the connecting disk 4. The upper end of the square rod 16 is fixedly connected to the cross-shaped support rod 3, and the upper end of the connecting disk 4 is provided with a storage groove 28 corresponding to the cross-shaped support rod 3. By opening the two telescopic cylinders 36, the connecting disk 4 connected to its output end is driven to move upward. With the movement of the connecting disk 4, the cross-shaped connecting rod 22 will be collected into the storage groove 28, and the gear will fall into the upper end of the connecting disk 4. When the square rod 16 contacts the lower end of the connecting cavity 2, the cross-shaped support rod 3 will lift the repaired gear again, control the U-shaped plate 19 to move outward, and under the obstruction of the limit plate 33, the repaired gear will be pushed into the external environment through the guide cavity 5;

[0032] The clamping mechanism includes a clamping plate 29, which is arranged on the upper side of the connecting disk 4. The lower end of the clamping plate 29 is fixedly connected to the cross-shaped connecting rod 22, and the cross-shaped connecting rod 22 is slidably connected to the cross-shaped sliding groove 26. The cross-shaped sliding groove 26 is opened in the upper end of the connecting disk 4. A connecting spring 25 is fixedly connected in the cross-shaped sliding groove 26, and the other end of the connecting spring 25 is fixedly connected to the cross-shaped connecting rod 22. The two telescopic cylinders 36 are opened to drive the connecting disk 4 connected to its output end to move upward. With the movement of the connecting disk 4, the cross-shaped connecting rod 22 will be collected in the storage groove 28. When the connecting disk 4 moves upward, the pull rope 15 will pull the I-shaped rod 23. Under the elastic force of the supporting spring 24, the I-shaped rod 23 will drive the cross-shaped connecting rod 22 to move along the cross-shaped sliding groove 26 when it is pulled. At this time, the connecting spring 25 will be compressed, and the movement of the cross-shaped connecting rod 22 drives the clamping plate 29 to move, and the gear is clamped by the four clamping plates 29 moving inward synchronously;

[0033] The lower end of the cross-shaped connecting rod 22 extends out of the connecting plate 4, and is movably connected with an I-shaped rod 23, one end of the I-shaped rod 23 is fixedly connected to the pull rope 15, and a support spring 24 is sleeved on the outer side of the I-shaped rod 23, one end of the support spring 24 is fixedly connected to the cross-shaped connecting rod 22, and the other end is fixedly connected to the I-shaped rod 23, the elastic force of the support spring 24 is greater than the elastic force of the connecting spring 25, and the laser repair mechanism includes a support column 6, a first screw rod 7 is movably connected inside the upper end of the support column 6, the upper end of the first screw rod 7 is fixedly connected to the output end of the first motor 8, the first motor 8 is fixedly installed on the upper end of the support column 6, a first cross bar 10 is movably sleeved on the outer side of the support column 6, and the first cross bar 10 is connected to the first screw 7, and the first screw rod 7 connected to its output end is driven to start rotating by turning on the first motor 8, and the rotation of the first screw 7 drives the first cross bar 10 screwed thereto to move up and down;

[0034] A through slot 34 is provided in the upper end of the first cross bar 10, and a second screw rod 9 is movably connected in the through slot 34. One end of the second screw rod 9 extends out of the first cross bar 10 and is fixedly connected to the output end of the second motor 14. A second cross bar 11 is screwed to the outer side of the second screw rod 9. A third screw rod 35 is movably connected to the lower end of the second cross bar 11. A connecting block 12 is screwed to the outer side of the third screw rod 35. One end of the third screw rod 35 extends out of the second cross bar 11 and is fixedly connected to the output end of the third motor 27. The lower end of the connecting block 12 is fixedly connected to the laser repairer 13. The lower end of the second cross bar 11 is U-shaped for connecting the third screw rod 35. The third motor 27 is started to drive the third screw rod 35 to rotate, and the rotation of the third screw rod 35 drives the connecting block 12 to move along the lower end of the second cross bar 11.

[0035] The storage mechanism includes a storage box 20, which is fixedly connected to the upper end of the base 1, and the lower end of the base 1 is connected to the guide cavity 5. The upper end of the storage box 20 is clamped with a box cover 21. The box cover 21 is opened to place the gears to be repaired in the storage box 20 in sequence. After the placement is completed, the box cover 21 is re-covered on the upper end of the storage box 20, and the gear located at the lower side of the storage box 20 will fall into the U-shaped plate 19 first;

[0036] The pushing mechanism includes a U-shaped plate 19, which is movably connected to the guide cavity 5. The end of the U-shaped plate 19 away from the connecting cavity 2 is fixedly connected to the folding plate 17, and the end of the folding plate 17 away from the U-shaped plate 19 is fixedly connected to the guide cavity 5. The inner side of the U-shaped plate 19 is movably connected to a limit plate 33, and the limit plate 33 is provided with a stopper 32 near the side of the U-shaped plate 19. The stopper 32 is fixedly connected to the inner side of the U-shaped plate 19, and the stopper 32 is used to limit the limit plate 33 so that the limit plate 33 can rotate clockwise. , but cannot rotate counterclockwise. A transmission motor 18 is fixedly connected to the lower end of the U-shaped plate 19, and a transmission gear 30 is fixedly connected to the output end of the transmission motor 18. The transmission gear 30 is slidably connected to the T-shaped tooth groove 31. The T-shaped tooth groove 31 is opened in the lower end of the guide cavity 5. Turn on the transmission motor 18 to drive the transmission gear 30 connected to its output end to start rotating. Since the transmission gear 30 is engaged in the T-shaped tooth groove 31, the U-shaped plate 19 will move into the connecting cavity 2 during the rotation of the transmission gear 30.

[0037] Working principle: when in use, open the box cover 21 and place the gears that need to be repaired in the storage box 20 in turn. After placement, cover the box cover 21 on the upper end of the storage box 20 again, and the gear located at the lowermost side of the storage box 20 will first fall into the U-shaped plate 19. At this time, turn on the transmission motor 18 to drive the transmission gear 30 connected to its output end to start rotating. Since the transmission gear 30 is engaged in the T-shaped tooth groove 31, during the rotation of the transmission gear 30, the U-shaped plate 19 will move into the connecting cavity 2, and the movement of the U-shaped plate 19 will drive the gear inside it to start moving, and finally push the gear into the upper end of the cross-shaped support rod 3. At the same time, when the U-shaped plate 19 moves, it will drive the folding plate 17 to unfold, and the storage box 20 is blocked by the folding plate 17;

[0038] The transmission motor 18 drives the transmission gear 30 to rotate counterclockwise, so that the U-shaped plate 19 returns to its original position. When the gear moves to the gear at the upper end of the cross-shaped support rod 3 and contacts it, the limit plate 33 will open to make way for the gear. After the U-shaped plate 19 returns to its original position, the folding plate 17 is folded together again, and the gear located in the storage box 20 will fall back into the inner side of the U-shaped plate 19;

[0039] By opening the two telescopic cylinders 36, the connecting disk 4 connected to its output end is driven to move upward. As the connecting disk 4 moves, the cross-shaped connecting rod 22 will be stored in the storage groove 28, and the gear will fall into the upper end of the connecting disk 4. When the connecting disk 4 moves upward, the pull rope 15 will pull the I-shaped rod 23. Under the elastic force of the supporting spring 24, the I-shaped rod 23 will drive the cross-shaped connecting rod 22 to move along the cross-shaped slide groove 26 when it is pulled. At this time, the connecting spring 25 will be compressed, and the movement of the cross-shaped connecting rod 22 drives the clamping plate 29 to move. The four clamping plates 29 move inward synchronously to clamp the gear. When the clamping is completed, as the connecting disk 4 continues to move, the I-shaped rod 23 will start to move. When the connecting disk 4 drives the gear to move to the upper end of the base 1, the connecting disk 4 stops moving.

[0040] By turning on the first motor 8 to drive the first screw 7 to start rotating, the first cross bar 10 can be moved downward along the support column 6. By turning on the second motor 14 to drive the second screw 9 to rotate, the second cross bar 11 moves back and forth. By turning on the third motor 27 to drive the third screw 35 to rotate, the connecting block 12 moves back and forth, and the laser repairer 13 can be controlled back and forth. The tooth surface of the gear can be repaired by the laser repairer 13. After the repair is completed, the connecting plate 4 is driven back to the initial position by the telescopic cylinder 36. At this time, under the elastic force of the connecting spring 25, the four cross-shaped connecting rods 22 return to their original positions, so that the clamping plate 29 cancels the clamping of the gear. At the same time, when the square rod 16 contacts the lower end of the connecting cavity 2, the cross-shaped support rod 3 will lift the repaired gear again and control the U-shaped plate 19 to move outward. Under the obstruction of the limit plate 33, the repaired gear will be pushed into the external environment through the guide cavity 5, and the gear to be repaired located on the inner side of the U-shaped plate 19 will fall back into the upper end of the cross-shaped support rod 3.

[0041] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A laser repair device for fatigue cracks on gear tooth surfaces, comprising a base, characterized in that: A connecting cavity is provided in the upper end of the base, a connecting disk is provided in the connecting cavity, a supporting mechanism is provided at the upper end of the connecting disk, the gear is supported by the supporting mechanism, a plurality of clamping mechanisms are provided in the upper end of the connecting disk, the lower end of the clamping mechanism extends out of the connecting disk and is fixedly connected to a pull rope, the pull rope is fixedly installed at the lower end of the connecting cavity, when the pull rope moves upward through the connecting disk, the clamping mechanism is pulled by the pull rope, and the gear is clamped by the plurality of clamping mechanisms after being pulled; A laser repair mechanism is fixedly connected to the upper end of the base, and the gear tooth surface is repaired by the laser repair mechanism. A storage mechanism is provided on the upper end of the base, and the gear to be repaired is stored by the storage mechanism. A guide cavity is opened in the base, and one end of the guide cavity is connected to the external environment. A pushing mechanism is movably connected in the guide cavity, and the gear in the storage mechanism is pushed into the upper end of the supporting mechanism by the pushing mechanism. Two telescopic cylinders are fixedly connected to the lower end of the base, and the output end of the telescopic cylinder extends into the connecting cavity and is fixedly connected to the lower end of the connecting plate.

2. The laser repair device for gear tooth surface fatigue cracks according to claim 1, characterized in that: The supporting mechanism includes a square rod, which is movably connected to the upper end of the connecting plate, the lower end of the square rod extends out of the connecting plate, the upper end of the square rod is fixedly connected to the cross-shaped supporting rod, and the upper end of the connecting plate is provided with a storage groove corresponding to the cross-shaped supporting rod.

3. The laser repair device for gear tooth surface fatigue cracks according to claim 1, characterized in that: The clamping mechanism includes a clamping plate, which is arranged on the upper side of the connecting disk. The lower end of the clamping plate is fixedly connected to the cross-shaped connecting rod. The cross-shaped connecting rod is slidably connected in a cross-shaped slide groove. The cross-shaped slide groove is opened in the upper end of the connecting disk. A connecting spring is fixedly connected in the cross-shaped slide groove, and the other end of the connecting spring is fixedly connected to the cross-shaped connecting rod.

4. The laser repair device for gear tooth surface fatigue cracks according to claim 3 is characterized in that: The lower end of the cross-shaped connecting rod extends out of the connecting plate and is movably connected to an I-shaped rod. One end of the I-shaped rod is fixedly connected to the pull rope. A supporting spring is sleeved on the outside of the I-shaped rod. One end of the supporting spring is fixedly connected to the cross-shaped connecting rod, and the other end is fixedly connected to the I-shaped rod.

5. The laser repair device for gear tooth surface fatigue cracks according to claim 1, characterized in that: The laser repair mechanism includes a support column, a first screw rod is movably connected to the upper end of the support column, the upper end of the first screw rod is fixedly connected to the output end of the first motor, the first motor is fixedly installed on the upper end of the support column, a first cross bar is movably sleeved on the outer side of the support column, and the first cross bar is connected to the first screw rod.

6. The laser repair device for gear tooth surface fatigue cracks according to claim 5, characterized in that: A through groove is provided in the upper end of the first cross bar, and a second screw rod is movably connected in the through groove, one end of the second screw rod extends out of the first cross bar and is fixedly connected to the output end of the second motor, a second cross bar is screwed on the outer side of the second screw rod, a third screw rod is movably connected to the lower end of the second cross bar, a connecting block is screwed on the outer side of the third screw rod, one end of the third screw rod extends out of the second cross bar and is fixedly connected to the output end of the third motor, and the lower end of the connecting block is fixedly connected to the laser repairer.

7. The laser repair device for gear tooth surface fatigue cracks according to claim 1, characterized in that: The storage mechanism comprises a material storage box, which is fixedly connected to the upper end of the base, the lower end of the base is communicated with the guide cavity, and the upper end of the material storage box is clamped with a box cover.

8. The laser repair device for gear tooth surface fatigue cracks according to claim 1, characterized in that: The pushing material mechanism includes a U-shaped plate, the U-shaped plate is movably connected in the guide cavity, the U-shaped plate is fixedly connected to a folding plate at one end away from the connecting cavity, the folding plate is fixedly connected to the guide cavity at one end away from the U-shaped plate, the inner side of the U-shaped plate is movably connected to a limiting plate, the limiting plate is provided with a stopper close to the side of the U-shaped plate, and the stopper is fixedly connected to the inner side of the U-shaped plate.

9. The laser repair device for gear tooth surface fatigue cracks according to claim 8, characterized in that: A transmission motor is fixedly connected inside the lower end of the U-shaped plate, a transmission gear is fixedly connected to the output end of the transmission motor, the transmission gear is slidably connected in the T-shaped tooth groove, and the T-shaped tooth groove is opened in the lower end of the guide cavity.

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