Laser cladding device for inner wall of oil cylinder

Abstract

The invention relates to the technical field of laser cladding devices, in particular to an oil cylinder inner wall laser cladding device which comprises a sliding rail, a rotating table installed at one end of the sliding rail, a moving table installed at the other end of the sliding rail, a supporting arm installed at one end of the moving table, a laser cladding head installed at one end of the supporting arm, an outer sleeve, a rotating mechanism and an annular tooth frame. The outer sleeve fixedly sleeves one end of the support arm, and the swing mechanism is rotatably connected to the outer side wall of the outer sleeve. According to the device, through the arrangement of the swing mechanism, when the oil cylinder rotates forwards, the cleaning brush module is driven to rotate reversely, meanwhile, when the cleaning brush module rotates reversely, the swing mechanism is driven to rotate reversely, and when the cleaning brush module moves relative to the oil cylinder, the to-be-machined position of the inner wall of the oil cylinder is cleaned; slag splashed to a to-be-machined area during machining of the laser cladding head is cleaned, the influence of the slag on a cladding layer is avoided, and the cladding effect on the inner wall of the oil cylinder is improved.

Description

Technical Field

[0001] The invention relates to the technical field of laser cladding devices, in particular to a laser cladding device for the inner wall of an oil cylinder. Background Art

[0002] Laser cladding is a new surface modification technology. It forms a metallurgically bonded cladding layer on the surface of the base material by adding cladding material to the surface of the substrate and using a high-energy-density laser beam to melt it together with a thin layer on the surface of the substrate. Through laser cladding technology, the surface coating of the inner hole of the cylinder can improve the wear resistance and corrosion resistance of the cylinder. Due to the high hardness and corrosion resistance of the laser cladding layer, the service life of the cylinder can be significantly improved. It has a wide range of applications. Laser cladding processing can be applied to cylinders of various materials and shapes, and can be flexibly applied to different production environments. It is different from traditional cladding. Compared with traditional machining methods, laser cladding processing does not require the use of a large amount of cutting fluid, abrasives and other substances, so it is more environmentally friendly and reduces energy consumption. When the laser cladding machine is working, the metal powder sprayed on the processing surface is melted by laser to form a cladding layer. When the powder is sprayed out, splashing slag will be formed. When it processes the inner wall of the cylinder, the slag will be collected on the inner wall of the cylinder even if it does not adhere to the inner wall of the cylinder. Therefore, in the subsequent cladding, the slag is mixed between the inner wall of the cylinder and the cladding layer, affecting the connection effect between the cladding layer and the inner wall of the cylinder. A laser cladding device for the inner wall of the cylinder is needed. Summary of the invention

[0003] The purpose of the present invention is to provide a laser cladding device for the inner wall of an oil cylinder to solve the problems raised in the above-mentioned background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: A laser cladding device for the inner wall of an oil cylinder comprises a slide rail, a rotating table is installed at one end of the slide rail, a moving table is installed at the other end of the slide rail, a support arm is installed at one end of the moving table, a laser cladding head is installed at one end of the support arm, and further comprises An outer sleeve is fixedly sleeved on one end of the support arm; A swivel mechanism is rotatably connected to the outer wall of the outer sleeve, the swivel mechanism also includes a swivel frame, the swivel frame is rotatably sleeved with the outer sleeve, a plurality of cradles are annularly and equidistantly fixedly connected to the outer wall of the swivel frame, one end of the cradle is rotatably connected to a cleaning brush module, and a transmission module is transmission-connected between the other end of the cradle and the cleaning brush module; The annular gear frame is fixedly sleeved on the outer sleeve, and the annular gear frame is transmission-connected to the transmission module.

[0005] Furthermore, the cradle includes a main rod, one end of which is fixedly connected to the outer wall of the rotating frame, the other end of the main rod is rotatably connected to a secondary rod, a torsion spring is fixedly connected between the other end of the main rod and the secondary rod, and one end of the secondary rod is rotatably connected to the cleaning brush module.

[0006] Furthermore, the cleaning brush module includes a brush roller, one end of which is fixedly connected to a contact wheel 1, one end of the auxiliary rod is fixedly connected to a rotating seat 1, the bottom end of the rotating seat 1 is rotatably connected to a contact wheel 2, the contact wheel 2 is in contact and extrusion with the contact wheel 1, and a plurality of bristle groups are installed on the outer side wall of the other end of the brush roller, and the plurality of bristle groups are truncated into a cone shape as a whole.

[0007] Furthermore, the transmission module includes a transmission shaft 1 and a transmission shaft 2, the transmission shaft 1 is fixedly connected to the main rod, the transmission shaft 2 is rotatably connected to the other end of the auxiliary rod, the transmission shaft 1 is rotatably connected to a transmission gear 2, one end of the transmission shaft 2 is fixedly sleeved with a transmission gear 3, one end of the auxiliary rod is rotatably connected to the outer side wall of one end of the auxiliary rod, one end of the transmission shaft 3 is fixedly connected with a transmission gear 4, the transmission shaft 3 is transmission-connected to the transmission shaft 2, one end of the brush roller is fixedly sleeved with a transmission gear 1, the transmission gear 1 is meshed with the transmission gear 4, and the transmission gear 2 is meshed with the annular gear rack.

[0008] Furthermore, the second transmission shaft and the third transmission shaft are both fixedly sleeved with pulleys, and a belt is connected between the two pulleys for transmission.

[0009] Furthermore, the inner wall of the brush roller is slidably connected with a pull rod, one end of the pull rod is fixedly connected with a pull frame, and the other end of the brush roller is provided with a flat slot, and the flat slot is used to avoid the pull frame.

[0010] Furthermore, a rotating seat 2 is fixedly connected to the middle position of the auxiliary rod, one end of the rotating seat 2 is rotatably connected to a pry rod, the other end of the pull rod is fixedly connected to two clips, one end of the pry rod is provided with a plug-in end, the plug-in end is located between the two clips, the other end of the pry rod is provided with a ring end, one end of the outer wall of the outer sleeve is fixedly connected to a limiting ring frame, and a tension spring is fixedly connected between the pry rod and the auxiliary rod.

[0011] Furthermore, one side wall of the limiting ring frame is spiral-shaped, and a step portion is provided on one side wall of the limiting ring frame.

[0012] Further, the outer wall of the outer sleeve is fixedly connected with a comb frame, one end of the comb frame is fixedly connected with a plurality of comb teeth, and the comb teeth are U-shaped.

[0013] Furthermore, a knocking frame is fixedly connected to the outer wall of the limiting ring frame, a plurality of knocking rods are fixedly connected to one end of the knocking frame at equal distances, and a contact portion is provided on the auxiliary rod, and the contact portion is used to interfere with the knocking rod.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Through the setting of the rotary mechanism, the oil cylinder is fixedly installed on the rotating table. The rotating table drives the oil cylinder to rotate forward. The movable table drives the laser cladding head to penetrate into the oil cylinder through the support arm, and the movable table drives the laser cladding head to move outward from the oil cylinder. With the forward rotation of the oil cylinder, the laser cladding head gradually clads the inner wall of the oil cylinder in a spiral shape. When the oil cylinder rotates forward, it drives the cleaning brush module to rotate in the opposite direction. At the same time, when the cleaning brush module rotates in the opposite direction, it drives the rotary mechanism to rotate in the opposite direction. When the cleaning brush module moves relative to the oil cylinder, it cleans the position to be processed on the inner wall of the oil cylinder, so that the slag splashed to the processing area during the laser cladding head processing is cleaned, so as to avoid the influence of the slag on the cladding layer and improve the cladding effect on the inner wall of the oil cylinder. 2. Through the setting of the cleaning brush module, when the oil cylinder rotates forward, the friction of the inner wall of the oil cylinder drives the contact wheel 2 to rotate forward, and the forward rotation of the contact wheel 2 drives the brush roller to rotate in the opposite direction through the contact wheel 1. Through the frustum-shaped setting of the hair group on the brush roller, when the brush roller is squeezed and contacted with the inner wall of the oil cylinder, the hair group on the brush roller is deformed in contact with the oil cylinder, so that the contact surface between the brush roller and the inner wall of the oil cylinder is trapezoidal, so that when the brush roller rotates, the slag is moved from the other end of the brush roller to one end, thereby moving the slag away from the laser cladding head to avoid slag accumulation; 3. Through the setting of the transmission module and the cradle, when the brush roller rotates in the reverse direction, the transmission gear 1 drives the transmission gear 4 to rotate forward, the transmission gear 4 drives the transmission shaft 2 to rotate forward through the transmission shaft 3, and the transmission shaft 2 drives the transmission gear 2 to rotate in the reverse direction through the transmission gear 3. Through the meshing of the transmission gear 2 and the annular gear rack, the rotary rack is driven to rotate in the reverse direction, so that multiple cleaning brush modules revolve in the reverse direction. Through the setting of the rotation connection between the main rod and the auxiliary rod, after the cleaning brush module contacts the inner wall of the oil cylinder, the auxiliary rod deflects relative to the main rod under extrusion. Through the setting of the torsion spring, the cleaning brush module is convenient for the extrusion contact with the inner wall of the oil cylinder. The reverse revolution of multiple cleaning brush modules cleans the slag to the right, thereby cleaning the slag at the position to be processed to the right in the direction away from the laser cladding head. 4. Through the setting of the combing frame and the knocking frame, when the brush roller passes over the combing frame, the hair group on the brush roller is combed by the comb teeth, so as to facilitate the cleaning of the slag stuck on the brush roller. Through the setting of multiple knocking rods on the knocking frame, when the rocking frame passes over the knocking frame, the contact part collides with multiple knocking rods in turn, thereby driving the brush roller to shake, which is convenient for shaking out the slag on the brush roller and facilitating the brush roller to clean the processing area again after one revolution. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the oil cylinder and cladding layer during processing; Figure 3 It is a schematic structural diagram of one end of the support arm in the present invention; Figure 4 It is a schematic diagram of the outer sleeve structure in the present invention; Figure 5 It is a schematic diagram of the structure of the rotary mechanism in the present invention; Figure 6 It is a schematic diagram of the rotary frame structure of the present invention; Figure 7 It is a front view structural schematic diagram of the rotary frame in the present invention; Figure 8 It is a schematic diagram of the brush roller structure of the present invention; Fig. 9 It is a schematic diagram of the structure of the cradle and the transmission module in the present invention; Fig.10 It is a schematic diagram of the pull rod structure in the present invention; Fig.11 It is a schematic diagram of the pry bar structure in the present invention.

[0016] In the figure: 100, slide rail; 110, rotating table; 200, moving table; 210, support arm; 220, laser cladding head; 300, outer sleeve; 310, comb frame; 311, comb teeth; 320, knock frame; 321, knock rod; 330, limit ring frame; 331, step portion; 400, rotary mechanism; 410, rotary frame; 420, cradle; 421, main rod; 422, auxiliary rod; 423, contact portion; 424, rotating seat 1; 425, torsion spring; 426, rotating seat 2; 430, cleaning brush mold Block; 431, brush roller; 432, flat notch; 433, transmission gear one; 434, contact wheel one; 440, pull rod; 441, clip; 442, pull frame; 450, transmission module; 451, transmission shaft one; 452, transmission gear two; 453, transmission shaft two; 454, transmission gear three; 455, pulley; 456, transmission shaft three; 457, transmission gear four; 460, pry bar; 461, ring end; 462, plug end; 463, tension spring; 470, contact wheel two; 500, ring gear frame. DETAILED DESCRIPTION

[0017] 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.

[0018] See also Figures 1 to 8 In the embodiment of the present invention, a laser cladding device for the inner wall of an oil cylinder includes a slide rail 100, a rotating table 110 is installed at one end of the slide rail 100, a moving table 200 is installed at the other end of the slide rail 100, a support arm 210 is installed at one end of the moving table 200, a laser cladding head 220 is installed at one end of the support arm 210, and an outer sleeve 300, a rotary mechanism 400 and an annular gear rack 500 are also included. The outer sleeve 300 is fixedly sleeved at one end of the support arm 210, and the rotary mechanism 400 is rotatably connected to the outer sleeve 300. The outer wall of the sleeve 300, the rotating mechanism 400 also includes a rotating frame 410, the rotating frame 410 is rotatably sleeved with the outer sleeve 300, and the outer wall of the rotating frame 410 is annularly equidistantly fixed with multiple cradles 420, one end of the cradle 420 is rotatably connected to the cleaning brush module 430, and the other end of the cradle 420 is transmission-connected to the cleaning brush module 430 with a transmission module 450, and the annular gear frame 500 is fixedly sleeved on the outer sleeve 300, and the annular gear frame 500 and the transmission module 450 are transmission-connected.

[0019] Specifically, the oil cylinder is fixedly installed on the rotating table 110, and the rotating table 110 drives the oil cylinder to rotate forwardly. The movable table 200 drives the laser cladding head 220 to penetrate into the oil cylinder through the supporting arm 210, and the movable table 200 drives the laser cladding head 220 to move outward from the oil cylinder. In conjunction with the forward rotation of the oil cylinder, the laser cladding head 220 gradually clads the inner wall of the oil cylinder outward in a spiral shape. When the oil cylinder rotates forwardly, it drives the cleaning brush module 430 to rotate in the opposite direction. At the same time, when the cleaning brush module 430 rotates in the opposite direction, it drives the rotary mechanism 400 to rotate in the opposite direction. When the cleaning brush module 430 moves relative to the oil cylinder, it cleans the position to be processed on the inner wall of the oil cylinder, so that the slag splashed to the area to be processed during the processing of the laser cladding head 220 is cleaned, so as to avoid the influence of the slag on the cladding layer and improve the cladding effect on the inner wall of the oil cylinder.

[0020] Embodiment 1 like Figures 4 to 10As shown, in the present embodiment, the cradle 420 comprises a main rod 421, one end of the main rod 421 is fixedly connected to the outer side wall of the rotating frame 410, the other end of the main rod 421 is rotatably connected to a sub-rod 422, a torsion spring 425 is fixedly connected between the other end of the main rod 421 and the sub-rod 422, one end of the sub-rod 422 is rotatably connected to a cleaning brush module 430, the cleaning brush module 430 comprises a brush roller 431, one end of the brush roller 431 is fixedly connected to a contact wheel 1 434, one end of the sub-rod 422 is fixedly connected to a rotating seat 1 424, the bottom end of the rotating seat 1 424 is rotatably connected to a contact wheel 2 470, the contact wheel 2 470 is in contact and extrusion with the contact wheel 1 434, a plurality of hair groups are installed on the outer side wall of the other end of the brush roller 431, and the plurality of hair groups are integrally truncated into a cone shape, and the material of the hair groups is silicone material, thereby improving the high temperature resistance of the hair groups, and the transmission module 450 It includes a transmission shaft 1 451 and a transmission shaft 2 453. The transmission shaft 1 451 is fixedly connected to the main rod 421. The transmission shaft 2 453 is rotatably connected to the other end of the auxiliary rod 422. The transmission shaft 1 451 is rotatably connected to the transmission gear 2 452. One end of the transmission shaft 2 453 is fixedly sleeved with a transmission gear 3 454. One end of the auxiliary rod 422 is rotatably connected to the outer wall of the transmission shaft 3 456. One end of the transmission shaft 3 456 is fixedly connected with a transmission gear 4 457. The transmission shaft 3 456 is transmission-connected to the transmission shaft 2 453. One end of the brush roller 431 is fixedly sleeved with a transmission gear 1 433. The transmission gear 1 433 is meshed with the transmission gear 4 457. The transmission gear 2 452 is meshed with the annular gear rack 500. The transmission shaft 2 453 and the transmission shaft 3 456 are both fixedly sleeved with pulleys 455. A belt is transmission-connected between the two pulleys 455.

[0021] In specific implementation, when the oil cylinder rotates forward, the friction of the inner wall of the oil cylinder drives the contact wheel 2 470 to rotate forward, and the forward rotation of the contact wheel 2 470 drives the brush roller 431 to rotate in the opposite direction through the contact wheel 1 434. The frustum-shaped arrangement of the hair group on the brush roller 431 causes the brush roller 431 to be squeezed and contacted with the inner wall of the oil cylinder. The hair group on the brush roller 431 is deformed in contact with the oil cylinder, so that the contact surface between the brush roller 431 and the inner wall of the oil cylinder is trapezoidal, so that when the brush roller 431 rotates, the slag is moved from the other end of the brush roller 431 to one end, thereby moving the slag away from the laser cladding head 220 to avoid slag accumulation. When the brush roller 431 rotates in the reverse direction, the transmission gear 457 is driven to rotate forwardly through the transmission gear 1 433. The transmission gear 457 drives the transmission shaft 2 453 to rotate forwardly through the transmission shaft 3 456. The transmission shaft 2 453 drives the transmission gear 2 452 to rotate in the reverse direction through the transmission gear 3 454. The engagement of the transmission gear 2 452 with the annular gear rack 500 drives the rotating rack 410 to rotate in the reverse direction, so that the multiple cleaning brush modules 430 revolve in the reverse direction. Through the setting of the rotation connection between the main rod 421 and the auxiliary rod 422, after the cleaning brush module 430 contacts the inner wall of the oil cylinder, the auxiliary rod 422 is deflected relative to the main rod 421 under extrusion. Through the setting of the torsion spring 425, the cleaning brush module 430 is convenient for being extruded and contacted with the inner wall of the oil cylinder. The reverse revolution of the multiple cleaning brush modules 430 cleans the slag to the right, thereby cleaning the slag at the position to be processed to the right in the direction away from the laser cladding head 220.

[0022] Embodiment 2 like Figures 6 to 11 As shown, in this embodiment, the inner wall of the brush roller 431 is slidably connected with a pull rod 440, one end of the pull rod 440 is fixedly connected with a pull frame 442, and the other end of the brush roller 431 is provided with a flat notch 432, which is used to avoid the pull frame 442, and the middle position of the auxiliary rod 422 is fixedly connected with a rotating seat 426, one end of the rotating seat 426 is rotatably connected with a pry bar 460, and the other end of the pull rod 440 is fixedly connected with two clips 441, and one end of the pry bar 460 is provided with a plug end 462, and the plug end 462 is located between the two clips 441, and the other end of the pry bar 460 is provided with a ring end 461, and the outer sleeve 300 is provided with a ring end 461. One end of the side wall is fixedly connected to a limiting ring frame 330, a tension spring 463 is fixedly connected between the pry rod 460 and the auxiliary rod 422, one side wall of the limiting ring frame 330 is spiral, a step portion 331 is provided on one side wall of the limiting ring frame 330, the outer side wall of the outer sleeve 300 is fixedly connected to a comb frame 310, one end of the comb frame 310 is fixedly connected to a plurality of comb teeth 311, and the comb teeth 311 are U-shaped, the outer side wall of the limiting ring frame 330 is fixedly connected to a knocking frame 320, one end of the knocking frame 320 is equidistantly fixedly connected to a plurality of knocking rods 321, and a contact portion 423 is provided on the auxiliary rod 422, and the contact portion 423 is used to interfere with the knocking rod 321.

[0023] When the cradle 420 is moved to the right side of the step portion 331, the limiting ring frame 330 squeezes the annular end 461, so that the plug-in end 462 of the pry bar 460 drives the pull rod 440 to move backward. When the pull rod 440 moves backward, it drives the pull frame 442 to move backward. The backward movement of the pull frame 442 pulls the hair group at the other end of the brush roller 431 backward, thereby avoiding the hair group on the brush roller 431 from contacting the molten pool below the laser cladding head 220. At the same time, through the spiral setting of one side wall of the limiting ring frame 330, the limiting ring frame 330 is spirally matched with one end of the cladding layer. When the cradle 420 passes over the step portion 331 and moves to the right side of the step portion 331, the limiting ring frame 330 relaxes the squeezing of the annular end 461, and the tension spring 463 pulls The pry bar 460 drives the pull rod 440 to move forward, so that the pull frame 442 releases the constraint on the hair group at the other end of the brush roller 431, so that the brush roller 431 can clean the area to be processed on the right side just below the laser cladding head 220. Through the setting of the comb frame 310, when the brush roller 431 passes over the comb frame 310, the hair group on the brush roller 431 is combed by the comb teeth 311, so as to facilitate the cleaning of the slag stuck on the brush roller 431. Through the setting of multiple knocking rods 321 on the knocking frame 320, when the rocking frame 420 passes over the knocking frame 320, the contact part 423 collides with the multiple knocking rods 321 in turn, so as to drive the brush roller 431 to shake, so as to facilitate the shaking out of the slag on the brush roller 431, and facilitate the brush roller 431 to clean the area to be processed again after one revolution.

[0024] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates. In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A laser cladding device for the inner wall of an oil cylinder, comprising a slide rail (100), a rotating table (110) being mounted on one end of the slide rail (100), a moving table (200) being mounted on the other end of the slide rail (100), a support arm (210) being mounted on one end of the moving table (200), and a laser cladding head (220) being mounted on one end of the support arm (210), characterized in that: Also includes: An outer sleeve (300) is fixedly sleeved on one end of the support arm (210); A swivel mechanism (400) is rotatably connected to the outer wall of the outer sleeve (300), the swivel mechanism (400) further comprising a swivel frame (410), the swivel frame (410) being rotatably sleeved with the outer sleeve (300), a plurality of cradles (420) being annularly equidistantly fixed to the outer wall of the swivel frame (410), one end of the cradle (420) being rotatably connected to a cleaning brush module (430), and a transmission module (450) being transmission-connected between the other end of the cradle (420) and the cleaning brush module (430); The annular gear frame (500) is fixedly sleeved on the outer sleeve (300), and the annular gear frame (500) is transmission-connected to the transmission module (450).

2. The laser cladding device for the inner wall of a cylinder according to claim 1, characterized in that: The cradle (420) comprises a main rod (421), one end of the main rod (421) is fixedly connected to the outer side wall of the rotating frame (410), the other end of the main rod (421) is rotatably connected to a secondary rod (422), a torsion spring (425) is fixedly connected between the other end of the main rod (421) and the secondary rod (422), and one end of the secondary rod (422) is rotatably connected to the cleaning brush module (430).

3. The laser cladding device for the inner wall of a cylinder according to claim 2, characterized in that: The cleaning brush module (430) comprises a brush roller (431), one end of the brush roller (431) is fixedly connected to a contact wheel 1 (434), one end of the auxiliary rod (422) is fixedly connected to a rotating seat 1 (424), the bottom end of the rotating seat 1 (424) is rotatably connected to a contact wheel 2 (470), the contact wheel 2 (470) and the contact wheel 1 (434) are in contact and extrusion, and a plurality of bristle groups are mounted on the outer side wall of the other end of the brush roller (431), and the plurality of bristle groups are integrally truncated into a cone shape.

4. The laser cladding device for the inner wall of a cylinder according to claim 3 is characterized in that: The transmission module (450) comprises a transmission shaft 1 (451) and a transmission shaft 2 (453); the transmission shaft 1 (451) is fixedly connected to the main rod (421); the transmission shaft 2 (453) is rotatably connected to the other end of the auxiliary rod (422); the transmission shaft 1 (451) is rotatably connected to a transmission gear 2 (452); one end of the transmission shaft 2 (453) is fixedly sleeved with a transmission gear 3 (454); one end of the auxiliary rod (422) is The outer wall is rotatably connected to a transmission shaft three (456), one end of the transmission shaft three (456) is fixedly connected to a transmission gear four (457), the transmission shaft three (456) is transmission-connected to the transmission shaft two (453), one end of the brush roller (431) is fixedly sleeved with a transmission gear one (433), the transmission gear one (433) is meshed with the transmission gear four (457), and the transmission gear two (452) is meshed with the annular gear rack (500).

5. The laser cladding device for the inner wall of a cylinder according to claim 4, characterized in that: The second transmission shaft (453) and the third transmission shaft (456) are both fixedly sleeved with pulleys (455), and a belt is connected between the two pulleys (455) for transmission.

6. The laser cladding device for the inner wall of a cylinder according to claim 4, characterized in that: The inner wall of the brush roller (431) is slidably connected to a pull rod (440), one end of the pull rod (440) is fixedly connected to a pull frame (442), and the other end of the brush roller (431) is provided with a flat notch (432), and the flat notch (432) is used to avoid the pull frame (442).

7. The laser cladding device for the inner wall of a cylinder according to claim 6, characterized in that: A second rotating seat (426) is fixedly connected to the middle position of the auxiliary rod (422), one end of the second rotating seat (426) is rotatably connected to a pry bar (460), the other end of the pull rod (440) is fixedly connected to two clips (441), one end of the pry bar (460) is provided with a plug end (462), the plug end (462) is located between the two clips (441), the other end of the pry bar (460) is provided with a ring end (461), one end of the outer wall of the outer sleeve (300) is fixedly connected to a limiting ring frame (330), and a tension spring (463) is fixedly connected between the pry bar (460) and the auxiliary rod (422).

8. The laser cladding device for the inner wall of a cylinder according to claim 7, characterized in that: One side wall of the limiting ring frame (330) is spiral-shaped, and a step portion (331) is provided on one side wall of the limiting ring frame (330).

9. The laser cladding device for the inner wall of a cylinder according to claim 7, characterized in that: A comb frame (310) is fixedly connected to the outer wall of the outer sleeve (300), and one end of the comb frame (310) is fixedly connected to a plurality of comb teeth (311), wherein the comb teeth (311) are U-shaped.

10. The laser cladding device for the inner wall of a cylinder according to claim 7, characterized in that: The outer wall of the limiting ring frame (330) is fixedly connected to a knocking frame (320), one end of the knocking frame (320) is fixedly connected to a plurality of knocking rods (321) at equal distances, and a contact portion (423) is provided on the auxiliary rod (422), and the contact portion (423) is used to interfere with the knocking rod (321).

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