A laser cladding device for the inner wall of a pipe

Abstract

The invention discloses a laser cladding device for the inner wall of a pipe fitting, belonging to the technical field of laser cladding. The invention arranges a radial support and stabilization mechanism to adjust the clamping stability of a transmission pipe, on the one hand, to meet the relative rotation with the inner wall of the cladding pipe, on the other hand, to meet the ability to slide relative to the inner wall of the cladding pipe axially outward, and is suitable for inner walls of pipes with different inner diameters, thereby increasing the support stability of the transmission pipe, avoiding the change in the distance between the cladding nozzle and the inner wall of the cladding pipe caused by its deformation, increasing the accuracy of the thickness of the cladding coating and the homogeneity of the coating, and improving the cladding quality; at the same time, the radial support and stabilization mechanism includes two groups of radial adjustment seats with radially adjustable installation positions for installing the transmission pipe, and the transmission pipe is adjusted and installed according to the inner wall diameter of the pipe and the preset distance between the cladding nozzle and the inner wall before cladding, and has the characteristics of convenient adjustment and installation and stable cladding.

Description

Technical Field

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

[0002] Laser cladding, also known as laser melting or laser cladding, is a new surface modification technology. It forms a metallurgically bonded cladding layer on the surface of the base by adding cladding material to the surface of the base material and using a high-energy-density laser beam to melt it together with a thin layer on the surface of the base material.

[0003] When performing laser cladding on the inner wall of a pipeline to add an anti-corrosion and wear-resistant layer for protection, the prior art generally installs a cladding nozzle at one end of a transmission tube, transmits laser, cladding powder and protective gas in the transmission tube, and clamps one end of the transmission tube through a robot or a clamping mechanism and inserts it into a rotatably installed pipeline to spray the cladding coating on the inner wall of the pipeline, such as the cladding method shown in Chinese patent CN202011106940.0. When the pipeline is long, the transmission tube will inevitably be distorted and deformed due to gravity, which will change the distance between the cladding nozzle and the inner wall of the pipeline, resulting in deviations in the thickness of the cladding coating and uneven texture, affecting the cladding quality; at the same time, in the process of cladding the inner wall of the pipeline, the powder is instantly melted and exposed to the air, and is easily cracked due to the influence of thermal expansion and contraction, affecting the quality of the cladding coating.

[0004] Based on the above problems, the present invention proposes a laser cladding device for the inner wall of a pipe. Summary of the invention

[0005] In view of the problems in the above technical background, the purpose of the present invention is to provide a laser cladding equipment for the inner wall of pipe fittings, which systematically solves the problem mentioned in the background technology that the transmission tube is easily affected by deformation when the pipeline is long. The distance between the cladding nozzle and the inner wall of the pipeline causes the cladding coating thickness to deviate, the texture to be uneven and prone to cracks.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is:

[0007] A laser cladding device for the inner wall of a pipe fitting comprises a driving device box and a pipe clamping seat provided on one side of the driving device box, a cladding pipe is installed on the pipe clamping seat, a base is connected to one side of the driving device box, a sliding mechanism is installed on the base, two groups of radial adjustment seats coaxial with the cladding pipe are symmetrically installed on the top of the sliding mechanism, a transmission pipe and an exhaust pipe are installed through the two groups of radial adjustment seats, and the transmission pipe can be radially adjusted at the position where the radial adjustment seat passes through; a cladding nozzle is installed at the end of the transmission pipe, and the inner side of the cladding nozzle A radial support stabilization mechanism is symmetrically installed on the transmission pipe, which can rotate and slide relative to the inner wall of the cladding pipe. The radial support stabilization mechanism includes two groups of radial adjustment seats and a telescopic support adjustment mechanism that realizes telescopic support by adjusting the distance between the two groups of radial adjustment seats, wherein the transmission pipe is parallel to the axis of the cladding pipe; the end of the exhaust pipe passes through the radial adjustment seat on the inner side of the cladding nozzle and is connected to the annular exhaust piece installed on one side of the radial adjustment seat; a heating mechanism with an adjustable distance from the outer wall of the cladding pipe is installed on one side of the drive equipment box.

[0008] A radial support stabilization mechanism is provided to adjust the clamping stability of the transmission tube. The mechanism is suitable for the inner walls of pipes with different inner diameters. The transmission tube can also move outward during the clamping and supporting process. The transmission tube is installed through a radial adjustment seat. Before cladding, the transmission tube is adjusted and installed according to the inner wall diameter of the pipe and the preset distance between the cladding nozzle and the inner wall. The mechanism has the characteristics of convenient adjustment and installation and stable cladding.

[0009] By setting up a heating mechanism, the function of radially adjusting the distance from the outer wall of the pipeline is met, and the pipeline is preheated to increase the strength of the adsorption of the sprayed molten powder on the inner wall of the pipeline, while controlling the temperature to drop slowly to avoid cracks.

[0010] Furthermore, the radial adjustment seat includes a positioning column, a scale, an I-shaped slider, a pointer and a positioning bolt. The positioning column is axially penetrated by a radial slot passing through the center of a circle, and the I-shaped slider is slidably mounted on the radial slot. The outer plate of the I-shaped slider is fixed by installing the positioning bolt. At the same time, the pointer is connected to the middle of the outer plate of the I-shaped slider, and the scale parallel to the radial slot is installed on one side surface of the positioning column at the outer end of the pointer.

[0011] Furthermore, protective plates are symmetrically provided on the front and back of the base, a plurality of slide rails are symmetrically installed in the middle part above the base, the sliding mechanism is slidably installed on the plurality of slide rails, the sliding mechanism includes a servo motor, a second threaded rod and a trapezoidal slide, the servo motor is installed on a side plate provided on the other side of the base, the output end of the servo motor passes through the side plate and is connected to the second threaded rod, the second threaded rod passes through a thread and is installed on the trapezoidal slide, the bottom of the trapezoidal slide is slidably installed on the plurality of slide rails through a plurality of slide grooves symmetrically provided, retaining rings are symmetrically provided on both sides of the top of the trapezoidal slide, and the positioning columns included in the radial adjustment seat are installed on the retaining rings.

[0012] Furthermore, the transmission pipe is passed through and fixedly installed on the I-shaped slider included in the radial adjustment seat symmetrically installed on the top of the sliding mechanism, the transmission pipe is passed through and fixedly installed on the I-shaped slider included in the radial adjustment seat close to the side of the cladding nozzle, and at the same time, the transmission pipe is passed through and axially slidably installed on the I-shaped slider included in another group of radial adjustment seats, the exhaust pipe is passed through and installed on the positioning columns included in four groups of radial adjustment seats, and the exhaust pipe is made of a hose material.

[0013] Furthermore, the radial support stabilization mechanism includes two groups of positioning columns on which the telescopic support adjustment mechanism is installed, and the telescopic support adjustment mechanism includes a telescopic support unit symmetrically installed between the two groups of positioning columns and a rotational stretching unit for controlling the spacing between the two groups of positioning columns, and the telescopic support unit is telescoped and extended along with the change of the spacing between the two groups of positioning columns.

[0014] Furthermore, the telescopic support unit includes multiple support rods, multiple rotating seats and universal ball seats. The two groups of positioning columns are symmetrically provided with multiple annularly distributed rotating grooves facing each other. One end of the support rod is rotatably installed in the rotating groove, and the other end of the symmetrically installed support rod is rotatably installed at the bottom of the rotating seat. The universal ball seat is installed on the top of the rotating seat.

[0015] Furthermore, the rotating stretching unit includes two L-shaped pull rods, a traction ring and a rotating drum. The outer section of the positioning column facing away from the cladding nozzle is provided with an external thread, and the inner side of one end of the rotating drum is rotatably mounted on the external thread by means of an internal thread. One end of the rotating drum is provided with an annular groove for mounting the traction ring, and one side surface of the traction ring is symmetrically connected to one end of the two pull rods, and the other ends of the two pull rods are mounted on the outer side wall of another positioning column.

[0016] Furthermore, the outer end of the rotating drum is provided with anti-slip grooves, and the scales respectively included in the two groups of radial adjustment seats are symmetrically installed on the outer sides facing each other of the two groups of positioning columns.

[0017] Furthermore, the exhaust member is an exhaust ring, an annular air duct is provided inside the exhaust ring, and a plurality of exhaust holes connected to the annular air duct are evenly provided on the outside of the exhaust ring, one end of the exhaust pipe is connected to the annular air duct, and the other end of the exhaust pipe is connected to the external exhaust system.

[0018] Furthermore, the heating mechanism includes a fixed seat, a T-shaped slider, a first threaded rod, a frame plate, a plurality of combustion nozzles and a gas pipe, the fixed seat is installed on the radially outer side of the pipe clamping seat, the slider is slidably installed in the fixed seat through a T-shaped slide groove, and the first threaded rod is rotatably installed in the T-shaped slide groove, and the first threaded rod is threadedly installed on the slider, a handle is connected to the top of the first threaded rod, the outer end of the slider is connected to the frame plate, and a plurality of the combustion nozzles are evenly installed on the bottom of the frame plate, and the gas pipe connected to the plurality of combustion nozzles is installed on the frame plate, and an adjusting knob for controlling the flow of the gas pipe is installed on the frame plate.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] In the present invention, two groups of radial adjustment seats coaxial with the cladding pipeline are symmetrically installed on the top of the sliding mechanism, and the transmission pipe and the exhaust pipe are installed through the two groups of radial adjustment seats, and the transmission pipe can be radially adjusted at the position where the radial adjustment seat penetrates; a cladding nozzle is installed at the end of the transmission pipe, and at the same time, a radial support stabilization mechanism that can rotate and slide relative to the inner wall of the cladding pipeline is symmetrically installed on the transmission pipe inside the cladding nozzle, and the radial support stabilization mechanism includes two groups of radial adjustment seats and a telescopic support adjustment mechanism that realizes telescopic support by adjusting the distance between the two groups of radial adjustment seats, wherein the transmission pipe is parallel to the axis of the cladding pipeline; the end of the exhaust pipe penetrates the radial adjustment seat inside the cladding nozzle and is connected to a ring-shaped exhaust member installed on one side of the radial adjustment seat; a radial adjustment member that can be adjusted to the cladding pipeline is installed on one side of the driving device box The invention relates to a heating mechanism for adjusting the distance between the outer wall and the transmission pipe; a radial support and stabilization mechanism is provided to adjust the clamping stability of the transmission pipe, which can satisfy the relative rotation with the inner wall of the cladding pipe on the one hand, and can satisfy the relative sliding between the axial outside and the inner wall of the cladding pipe on the other hand. At the same time, it is suitable for the inner walls of pipes with different inner diameters, thereby increasing the support stability of the transmission pipe and avoiding the change of the distance between the cladding nozzle and the inner wall of the cladding pipe caused by its deformation, thereby increasing the accuracy of the thickness of the cladding coating and the homogeneity of the coating, and improving the cladding quality; at the same time, the radial support and stabilization mechanism includes two sets of radial adjustment seats with radially adjustable installation positions for installing the transmission pipe. Before cladding, the transmission pipe is adjusted and installed according to the inner wall diameter of the pipe and the preset distance between the cladding nozzle and the inner wall, which has the characteristics of convenient adjustment and installation and stable cladding. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1A three-dimensional diagram of a laser cladding device provided in an embodiment of the present invention;

[0022] Figure 2 A stereoscopic diagram of a laser cladding device provided in an embodiment of the present invention removing a cladding pipeline;

[0023] Figure 3 A partially exploded perspective view of a heating mechanism provided in an embodiment of the present invention;

[0024] Figure 4 A three-dimensional diagram of the installation of a half-section of a cladding pipeline and a transmission pipe, an exhaust pipe, a sliding mechanism, two sets of radial adjustment seats and a radial support stabilization mechanism provided by an embodiment of the present invention;

[0025] Figure 5 An exploded perspective view of a transmission pipe, an exhaust pipe, a sliding mechanism and two sets of radial adjustment seats provided in an embodiment of the present invention;

[0026] Figure 6 A stereoscopic diagram of the installation of a transmission pipe, an exhaust pipe and a radial support and stabilization mechanism provided in an embodiment of the present invention;

[0027] Figure 7 The transmission pipe, exhaust pipe and radial support stabilization mechanism provided in the embodiment of the present invention are partially separated and installed in a three-dimensional manner. Figure 1 ;

[0028] Figure 8 The transmission pipe, exhaust pipe and radial support stabilization mechanism provided in the embodiment of the present invention are partially separated and installed in a three-dimensional manner. Figure 2 ;

[0029] Fig. 9 A partially cutaway installation stereoscopic diagram of the transmission pipe, exhaust pipe and radial support and stabilization mechanism provided in an embodiment of the present invention.

[0030] In the figure: 1, drive equipment box; 2, pipe clamping seat; 3, base; 301, side plate; 4, slide rail; 5, protective plate; 6, servo motor; 7, cladding pipe; 8, fixed seat; 9, T-shaped slide; 10, slider; 11, first threaded rod; 111, handle; 12, shelf; 13, combustion nozzle; 14, gas pipe; 141, adjustment knob; 15, second threaded rod; 16, trapezoidal slide; 161, slide; 17, clamping ring; 18, positioning column; 1 9. Radial slide groove; 20. Scale; 21. I-shaped slide block; 211. Pointer; 212. Positioning bolt; 22. Transmission pipe; 221. Cladding nozzle; 23. Exhaust pipe; 24. Rotating groove; 25. Support rod; 26. Rotating seat; 27. Universal ball seat; 28. Pull rod; 29. ​​Traction ring; 30. External thread; 31. Rotating drum; 32. Internal thread; 33. Annular groove; 34. Anti-skid pattern; 35. Pumping ring; 351. Annular airway; 36. Pumping hole. DETAILED DESCRIPTION

[0031] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0032] Embodiment 1

[0033] like Figure 1-9 As shown, a laser cladding device for the inner wall of a pipe fitting comprises a driving device box 1 and a pipe clamping seat 2 provided on one side of the driving device box 1, a cladding pipe 7 is installed on the pipe clamping seat 2, a base 3 is connected to one side of the driving device box 1, a sliding mechanism is installed on the base 3, two groups of radial adjustment seats coaxial with the cladding pipe 7 are symmetrically installed on the top of the sliding mechanism, a transmission pipe 22 and an exhaust pipe 23 are installed through the two groups of radial adjustment seats, a laser generating device can be installed in the transmission pipe 22, which belongs to the prior art, and a delivery and distribution device is installed in the transmission pipe 22 The transmission pipe 22 is radially adjustable at the radial adjustment seat penetration position. The two sets of radial adjustment seats on the outside play the role of adjusting the radial installation position of the transmission pipe 22, so as to control the distance between the cladding nozzle 221 and the inner wall of the cladding pipe 7; on the other hand, they play the role of clamping and pulling the transmission pipe 22 to move outward during the cladding process, so as to ensure that the inner wall of the cladding pipe 7 is clad and covered with a coating; the cladding nozzle 22 is installed at the end of the transmission pipe 22. 1. At the same time, a radial support stabilizing mechanism that can rotate and slide relative to the inner wall of the cladding pipe 7 is symmetrically installed on the transmission pipe 22 inside the cladding nozzle 221. The radial support stabilizing mechanism includes two groups of radial adjustment seats and a telescopic support adjustment mechanism that realizes telescopic support by adjusting the distance between the two groups of radial adjustment seats, wherein the transmission pipe 22 is parallel to the axis of the cladding pipe 7; the end of the exhaust pipe 23 passes through the radial adjustment seat inside the cladding nozzle 221 and is connected to the annular exhaust member installed on one side of the radial adjustment seat; a heating mechanism that can adjust the distance from the outer wall of the cladding pipe 7 is installed on one side of the driving device box 1. The telescopic support adjustment mechanism plays the role of installing the transmission pipe 22 and clamping and supporting the transmission pipe 22 on the one hand, and on the other hand, it satisfies the axial sliding and relative rotation with the inner wall of the cladding pipe 7, increases the stability of movement, and can also cooperate with the two groups of radial adjustment seats on the outside to adjust the radial installation position of the transmission pipe 22, so as to control the distance between the cladding nozzle 221 and the inner wall of the cladding pipe 7, and finally avoid the problem of uneven thickness of the cladding coating caused by gravity deformation of the transmission pipe.

[0034] like Figure 4-8As shown, the radial adjustment seat includes a positioning column 18, a scale 20, an I-shaped slider 21, a pointer 211 and a positioning bolt 212. The positioning column 18 axially penetrates a radial slot 19 passing through the center of the circle. An I-shaped slider 21 is slidably installed on the radial slot 19. The outer plate of the I-shaped slider 21 is fixed by installing a positioning bolt 212. At the same time, a pointer 211 is connected to the middle of the outer plate of the I-shaped slider 21. A scale 20 parallel to the radial slot 19 is installed on one side of the positioning column 18 at the outer end of the pointer 211. The radial installation position of the transmission pipe 22 installed thereon is controlled by controlling the position of the I-shaped slider 21, thereby driving the terminal cladding nozzle 221 to move, thereby controlling the distance between the cladding nozzle 221 and the inner wall of the cladding pipe 7. The convenience of control and adjustment is increased by setting the scale 20. At the same time, it is fixed and installed by the positioning bolt 212. The installation is stable to avoid sliding during operation.

[0035] like Figure 1 , 2 As shown in , 4, and 5, a protective plate 5 is symmetrically arranged on the front and back of the base 3. The safety protection performance is increased by setting the protective plate 5. A plurality of slide rails 4 are symmetrically installed on the middle part of the upper part of the base 3. A sliding mechanism is slidably installed on the plurality of slide rails 4. The sliding mechanism includes a servo motor 6, a second threaded rod 15, and a trapezoidal slide 16. The servo motor 6 is installed on a side plate 301 provided on the other side of the base 3. The output end of the servo motor 6 penetrates the side plate 301 to connect the second threaded rod 15. The second threaded rod 15 penetrates the thread and is installed on the trapezoidal slide 16. The bottom of the trapezoidal slide 16 is slidably installed on multiple slide rails 4 by symmetrically providing multiple slide grooves 161. The second threaded rod 15 is driven to rotate by controlling the servo motor 6. The second threaded rod 15 pushes the trapezoidal slide 16 to move to one side. The trapezoidal slide 16 drives the positioning column 18 located above to move, thereby achieving the effect of controlling the movement of the transmission tube 22. Snap rings 17 are symmetrically provided on both sides of the top of the trapezoidal slide 16. The positioning column 18 included in the radial adjustment seat is installed on the snap ring 17. The stability of sliding is increased by setting the slide rail 4 and the slide groove 161.

[0036] like Figure 4 , 5As shown, the transmission pipe 22 is fixedly installed on the I-shaped slider 21 included in the radial adjustment seat symmetrically installed on the top of the sliding mechanism, and the radial adjustment seat located thereon is driven to move by the sliding mechanism, and finally the purpose of pulling the transmission pipe 22 and the cladding nozzle 221 installed at its end is achieved to move outward, so as to achieve uniform cladding spraying coverage of the inner wall of the cladding pipe 7, the transmission pipe 22 is fixedly installed on the I-shaped slider 21 included in the radial adjustment seat close to the side of the cladding nozzle 221, and at the same time, the transmission pipe 22 is installed on the I-shaped slider 21 included in another group of radial adjustment seats axially slidably, and the other group of radial adjustment seats can slide relative to the transmission pipe 22, so as to provide action conditions for the telescopic support of the radial support stabilization mechanism, and the exhaust pipe 23 is installed on the positioning column 18 included in the four groups of radial adjustment seats, and the exhaust pipe 23 is made of hose material to avoid pulling and limiting during the expansion and contraction of the structure.

[0037] like Figure 6-9 As shown, the radial support stabilization mechanism includes a telescopic support adjustment mechanism installed on two groups of positioning columns 18, and the telescopic support adjustment mechanism includes a telescopic support unit symmetrically installed between the two groups of positioning columns 18 and a rotating stretching unit for controlling the distance between the two groups of positioning columns 18. The telescopic support unit is telescoped and extended along with the change of the distance between the two groups of positioning columns 18. The distance between the two groups of positioning columns 18 is controlled by the rotating stretching unit, thereby achieving the purpose of controlling the telescopic support radius of the telescopic support unit.

[0038] like Figure 6-9 As shown, the telescopic support unit includes a plurality of struts 25, a plurality of rotating seats 26 and a universal ball seat 27. Two groups of positioning columns 18 are symmetrically provided with a plurality of annularly distributed rotating grooves 24 facing each other. One end of the strut 25 is rotatably installed in the rotating groove 24, and the other end of the symmetrically installed strut 25 is rotatably installed at the bottom of the rotating seat 26. A universal ball seat 27 is installed on the top of the rotating seat 26. When the two groups of positioning columns 18 are close to each other, the symmetrically installed struts 25 are lifted up, driving the radial outer side of the rotating seat 26 to be lifted up. The universal ball seat 27 installed on the rotating seat 26 is supported on the inner wall of the cladding pipe 7, thereby achieving a supporting effect. At the same time, the universal ball seat 27 is provided to satisfy the function of relative sliding with the inner wall of the cladding pipe 7 in the axial or circumferential direction.

[0039] like Figure 6-9As shown, the rotating stretching unit includes two L-shaped tie rods 28, a traction ring 29 and a rotating drum 31. The outer section of the positioning column 18 away from the cladding nozzle 221 is provided with an external thread 30. The inner side of one end of the rotating drum 31 is rotatably mounted on the external thread 30 through an internal thread 32. An annular groove 33 for mounting the traction ring 29 is provided at one end of the rotating drum 31. One side of the traction ring 29 is symmetrically connected to one end of the two tie rods 28. The other ends of the two tie rods 28 are mounted on the outer side wall of another positioning column 18. By rotating the rotating drum 31, the internal thread 32 on the inner side of one end is subjected to the reaction force of the external thread 30. The rotating drum 31 is driven to rotate outward, and the traction ring 29 is driven to move outward during the process of rotating outward. Since two L-shaped pull rods 28 are connected to one side of the traction ring 29, and one end of the two L-shaped pull rods 28 is connected to the side wall of another group of positioning columns 18, the purpose of shortening the distance between the two groups of positioning columns 18 by the two L-shaped pull rods 28 is achieved, the distance between the two groups of positioning columns 18 is reduced to achieve the purpose of expansion, and the distance between the two groups of positioning columns 18 is increased to achieve the purpose of reducing the support radius. At the same time, the transmission tube 22 is installed on the I-shaped slider 21 arranged on the inner side of the two groups of positioning columns 18.

[0040] like Figure 7 As shown, the outer end of the rotating drum 31 is provided with anti-slip grooves 34, which increases the comfort of manual rotation. At the same time, the scales 20 respectively included in the two sets of radial adjustment seats are symmetrically installed on the outer sides facing the two sets of positioning columns 18, which is convenient for early identification of adjustment control.

[0041] like Figure 7-9 As shown, the extraction member is an extraction ring 35, an annular air channel 351 is provided inside the extraction ring 35, and multiple extraction holes 36 connected to the annular air channel 351 are evenly provided on the outside of the extraction ring 35. One end of the exhaust pipe 23 is connected to the annular air channel 351, and the other end of the exhaust pipe 23 is connected to the external extraction system. During the cladding process, the powder generated by the cladding is extracted through the extraction holes 36 to the external extraction system for recovery, thereby avoiding waste of materials.

[0042] like Figure 3As shown, the heating mechanism includes a fixed seat 8, a T-shaped slider 10, a first threaded rod 11, a frame plate 12, a plurality of combustion nozzles 13 and a gas pipe 14. The fixed seat 8 is installed on the radial outer side of the pipe clamping seat 2. The slider 10 is slidably installed in the fixed seat 8 through a T-shaped slide groove 9, which increases the sliding stability of the slider 10. At the same time, the first threaded rod 11 is rotatably installed in the T-shaped slide groove 9, and the first threaded rod 11 is threadedly installed on the slider 10. The top of the first threaded rod 11 is connected to a handle 111. The outer end of the slider 10 is connected to a frame plate 12. The bottom of the frame plate 12 is evenly installed with a plurality of combustion nozzles 13. At the same time, the frame plate 12 is installed with a plurality of combustion nozzles 13. The gas pipe 14 of the nozzle 13 is provided, and the frame plate 12 is provided with an adjusting knob 141 for controlling the flow rate of the gas pipe 14. The first threaded rod 11 is driven to rotate by the manual control handle 111. The first threaded rod 11 pushes the slider 10 to slide in the T-shaped slide groove 9, and pushes the frame plate 12 on one side of the slider 10 to move along with it in the radial outside of the cladding pipeline 7, so as to realize the function of controlling the distance between the multiple combustion nozzles 13 and the outer wall of the cladding pipeline 7. At the same time, the gas pipe 14 is connected to the outer gas supply system, and the flame intensity is adjusted by adjusting the knob 141, so as to achieve the purpose of uniformly heating the outer wall of the cladding pipeline 7 and avoid the cracking of the coating caused by too fast cooling of the cladding.

[0043] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A laser cladding device for the inner wall of a pipe, comprising a drive device box (1) and a pipe clamping seat (2) provided on one side of the drive device box (1), wherein a cladding pipe (7) is installed on the pipe clamping seat (2), characterized in that: A base (3) is connected to one side of the driving device box (1), a sliding mechanism is installed on the base (3), two groups of radial adjustment seats coaxial with the cladding pipe (7) are symmetrically installed on the top of the sliding mechanism, a transmission pipe (22) and an exhaust pipe (23) are installed through the two groups of radial adjustment seats, and the transmission pipe (22) can be radially adjusted at the position where the radial adjustment seat passes through; A cladding nozzle (221) is installed at the end of the transmission pipe (22), and a radial support stabilization mechanism that can rotate and slide relative to the inner wall of the cladding pipeline (7) is symmetrically installed on the transmission pipe (22) inside the cladding nozzle (221), the radial support stabilization mechanism comprising two groups of radial adjustment seats and a telescopic support adjustment mechanism that realizes telescopic support by adjusting the distance between the two groups of radial adjustment seats, wherein the transmission pipe (22) is parallel to the axis of the cladding pipeline (7); The end of the exhaust pipe (23) passes through the radial adjustment seat inside the cladding nozzle (221) and is connected to an annular exhaust component installed on one side of the radial adjustment seat; A heating mechanism capable of adjusting the distance between the heating mechanism and the outer wall of the cladding pipe (7) is installed on one side of the driving device box (1); The radial adjustment seat comprises a positioning column (18), a scale (20), an I-shaped slider (21), a pointer (211) and a positioning bolt (212); the positioning column (18) is axially penetrated by a radial sliding groove (19) passing through the center of the circle; The radial support stabilization mechanism comprises two groups of positioning columns (18) on which the telescopic support adjustment mechanism is installed, the telescopic support adjustment mechanism comprises a telescopic support unit symmetrically installed between the two groups of positioning columns (18) and a rotation stretching unit for controlling the distance between the two groups of positioning columns (18), the telescopic support unit is extended and retracted along with the change in the distance between the two groups of positioning columns (18); The rotating stretching unit comprises two L-shaped pull rods (28), a traction ring (29) and a rotating drum (31); an outer section of the positioning column (18) facing away from the cladding nozzle (221) is provided with an external thread (30); the inner side of one end of the rotating drum (31) is rotatably mounted on the external thread (30) via an internal thread (32); one end of the rotating drum (31) is provided with an annular groove (33) for mounting the traction ring (29); one side surface of the traction ring (29) is symmetrically connected to one end of the two pull rods (28); and the other ends of the two pull rods (28) are mounted on the outer side wall of another positioning column (18).

2. The laser cladding equipment for the inner wall of a pipe according to claim 1, characterized in that: The I-shaped slider (21) is slidably mounted on the radial slide groove (19), and the I-shaped slider (21) is fixed on an outer plate thereof by installing the positioning bolt (212). Meanwhile, the pointer (211) is connected to the middle of the outer plate of the I-shaped slider (21), and the scale (20) parallel to the radial slide groove (19) is mounted on one side surface of the positioning column (18) at the outer end of the pointer (211).

3. The laser cladding equipment for the inner wall of a pipe according to claim 2, characterized in that: A protective plate (5) is symmetrically arranged at the front and rear of the base (3); a plurality of slide rails (4) are symmetrically arranged at the middle of the upper part of the base (3); the sliding mechanism is slidably arranged on the plurality of slide rails (4); the sliding mechanism comprises a servo motor (6), a second threaded rod (15) and a trapezoidal slide (16); the servo motor (6) is mounted on a side plate (301) provided on the other side of the base (3); an output end of the servo motor (6) passes through the side plate (301) to connect the second threaded rod (15); the second threaded rod (15) is threadedly mounted on the trapezoidal slide (16); the bottom of the trapezoidal slide (16) is slidably mounted on the plurality of slide rails (4) by symmetrically arranged multiple slide grooves (161); snap rings (17) are symmetrically arranged on both sides of the top of the trapezoidal slide (16); the positioning column (18) included in the radial adjustment seat is mounted on the snap ring (17).

4. The laser cladding equipment for the inner wall of a pipe according to claim 2, characterized in that: The transmission pipe (22) is fixedly mounted on the I-shaped slider (21) included in the radial adjustment seat symmetrically mounted on the top of the sliding mechanism, the transmission pipe (22) is fixedly mounted on the I-shaped slider (21) included in the radial adjustment seat close to the cladding nozzle (221), and the transmission pipe (22) is axially slidably mounted on the I-shaped slider (21) included in another group of radial adjustment seats, the exhaust pipe (23) is mounted on the positioning columns (18) included in the four groups of radial adjustment seats, and the exhaust pipe (23) is made of a hose material.

5. The laser cladding equipment for the inner wall of a pipe according to claim 1, characterized in that: The telescopic support unit comprises a plurality of support rods (25), a plurality of rotating seats (26) and a universal ball seat (27); two groups of positioning columns (18) are symmetrically provided with a plurality of annularly distributed rotating grooves (24) facing each other; one end of the support rod (25) is rotatably mounted in the rotating groove (24); the other end of the symmetrically mounted support rod (25) is rotatably mounted at the bottom of the rotating seat (26); and the universal ball seat (27) is mounted on the top of the rotating seat (26).

6. The laser cladding equipment for the inner wall of a pipe according to claim 5, characterized in that: The outer end of the rotating drum (31) is provided with anti-slip grooves (34), and the scales (20) respectively included in the two groups of radial adjustment seats are symmetrically installed on the outer sides facing each other of the two groups of positioning columns (18).

7. The laser cladding equipment for the inner wall of a pipe according to claim 1, characterized in that: The extraction member is an extraction ring (35), an annular air passage (351) is provided inside the extraction ring (35), and a plurality of extraction holes (36) connected to the annular air passage (351) are evenly provided on the outside of the extraction ring (35), one end of the exhaust pipe (23) is connected to the annular air passage (351), and the other end of the exhaust pipe (23) is connected to an external extraction system.

8. The laser cladding equipment for the inner wall of a pipe according to claim 1, characterized in that: The heating mechanism comprises a fixed seat (8), a T-shaped slider (10), a first threaded rod (11), a frame plate (12), a plurality of combustion nozzles (13) and a gas pipe (14); the fixed seat (8) is mounted on the radially outer side of the pipe clamping seat (2); the slider (10) is slidably mounted in the fixed seat (8) via a T-shaped slide groove (9); the first threaded rod (11) is rotatably mounted in the T-shaped slide groove (9); the first threaded rod (11) is threadedly mounted on the slider (10); a handle (111) is connected to the top of the first threaded rod (11); the outer end of the slider (10) is connected to the frame plate (12); a plurality of combustion nozzles (13) are evenly mounted on the bottom of the frame plate (12); the gas pipes (14) connected to the plurality of combustion nozzles (13) are mounted on the frame plate (12); and an adjusting knob (141) for controlling the flow of the gas pipe (14) is mounted on the frame plate (12).

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