Laser cutting equipment for maintenance of coal mining machine

Abstract

The invention belongs to the technical field of coal cutter maintenance, and particularly relates to laser cutting equipment for coal cutter maintenance, the laser cutting equipment comprises a mounting seat and a control panel arranged on the upper side wall of the mounting seat, the upper side wall of the mounting seat is fixedly connected with a PLC, and the upper side wall of the mounting seat is fixedly connected with a fixing frame; the side wall of the fixing frame is fixedly connected with a vertical electric push rod, and the moving end of the vertical electric push rod penetrates through the fixing frame. In the process of cutting and maintaining the coal mining machine by the laser cutting equipment, dust particles attached to an optical component can be automatically cleaned after the optical component of the laser cutting equipment is detected to be blocked by the dust particles, so that the dust particles are prevented from blocking and scattering part of laser beams, and the laser cutting equipment is prevented from being damaged. And meanwhile, the slag adhering phenomenon caused by blocking and scattering of laser beams on the surface of the part is automatically removed, and the appearance quality of the cut part is guaranteed.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mining machine maintenance, and in particular relates to a laser cutting device for coal mining machine maintenance. Background Art

[0002] Coal mining machine is the main coal mining machine used in coal mine production. The working environment of coal mining machine is harsh and needs to be frequently disassembled and repaired. During the repair process, it is necessary to use a cutting device to cut the damaged plate. Nowadays, laser cutting has the characteristics of good cutting quality, high cutting efficiency, and a wide variety of cutting materials, which makes laser cutting the main cutting method in heavy industry. Laser cutting uses a high-power density laser beam to irradiate the cut material, so that the material is quickly heated to the gasification temperature and evaporated to form holes. As the light beam moves on the material, the holes continuously form slits to complete the cutting of the material. For example, a laser cutting device for coal mining machinery maintenance is proposed in patent announcement number CN 114619155B.

[0003] When using existing laser cutting equipment, due to the large size and weight of some parts of the coal mining machine and the inconvenience of transportation, the coal mining machine usually needs to be repaired at the construction site. During the use of the laser cutting equipment, dust will adhere to the optical components of the laser cutting equipment, such as focusing lenses, etc. Dust particles will block and scatter part of the laser beam, affecting the laser energy transmission and cutting effect, so that the slag generated during the cutting process cannot be effectively blown away from the cutting area. The slag adheres to the cutting edge to form slag hanging, which not only affects the appearance quality of the cut part, but also may interfere with the welding process for some workpieces that need to be welded or processed later, reducing the welding quality and even causing welding defects.

[0004] Therefore, a laser cutting device for coal mining machine maintenance is proposed to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a laser cutting device for coal mining machine maintenance in view of the above problems.

[0006] To achieve the above object, the present invention adopts the following technical solutions: a laser cutting device for coal mining machine maintenance, comprising a mounting seat and a control panel arranged on the upper side wall of the mounting seat, the upper side wall of the mounting seat is fixedly connected to a PLC controller, the upper side wall of the mounting seat is fixedly connected to a fixing frame, the side wall of the fixing frame is fixedly connected to a vertical electric push rod, the moving end of the vertical electric push rod passes through the fixing frame and is fixedly connected to a linear motor, and also includes:

[0007] A moving plate, fixedly connected to the moving end of the linear motor, a laser cutting head is fixedly connected to the lower side wall of the moving plate, a detection and scraping assembly is connected to the lower side wall of the moving plate, and the detection and scraping assembly is electrically connected to the PLC controller;

[0008] A cleaning component, arranged on the side wall of the movable plate, for cleaning dust attached to the surface of the laser cutting head;

[0009] The pre-processing component is arranged on the side wall of the movable plate and is located behind the laser cutting head.

[0010] Preferably, the detection and scraping assembly includes a vertical plate fixedly connected to the lower side wall of the moving plate, the right side wall of the vertical plate is fixedly connected to a control motor, the output end of the control motor passes through the vertical plate and is fixedly connected to a connecting frame, the lower end of the connecting frame is fixedly connected to a placement plate, the side wall of the placement plate is connected to a placement rod through a positioning assembly, the upper end of the placement rod is fixedly connected to a horizontal cylinder, and the front inner wall of the horizontal cylinder is fixedly connected to a sliding block through a spring, the lower inner wall of the horizontal cylinder is fixedly connected to a trigger switch, the trigger switch is electrically connected to a PLC controller, and the upper side wall of the sliding block A square plate is fixedly connected, and a guide port matching the square plate is opened on the upper side wall of the horizontal cylinder. The upper end of the square plate extends out of the guide port and is fixedly connected to a cutting plate. A trigger block is fixedly connected to the left side wall of the cutting plate. The front side wall of the trigger block is an inclined structure. A groove is opened on the upper side wall of the trigger block, and a connecting ring is fixedly connected to the inner wall of the groove. A vertical frame is inserted in the connecting ring, and the upper end of the vertical frame extends out of the groove and is fixedly connected to a conical block, and a control switch is fixedly connected to the lower inner wall of the groove, and the control switch is electrically connected to the positioning component through a PLC controller.

[0011] Preferably, the positioning assembly includes a positioning cylinder fixedly connected to the upper side wall of the placement plate, the lower inner wall of the positioning cylinder is fixedly connected to a positioning block through a spring, the right side wall of the positioning block is provided with a transverse groove, and a positioning electric push rod is inserted into the transverse groove, the control switch is electrically connected to the positioning electric push rod through a PLC controller, the movable end of the positioning electric push rod is fixedly connected to a rough block, and the right side inner wall of the positioning cylinder is inlaid with a rough plate that matches the rough block.

[0012] Preferably, the cleaning component includes a cleaning electric push rod fixedly connected to the upper side wall of the movable plate, the moving end of the cleaning electric push rod passes through the movable plate and is fixedly connected to an angle motor, the output end of the angle motor is fixedly connected to a rotating plate, the side wall of the rotating plate is rotatably connected to a dust suction pipe, the upper end of the dust suction pipe is fixedly connected to an arc tube, and the upper side wall of the arc tube is provided with a plurality of dust suction holes, the upper inner wall of the arc tube is fixedly connected with bristles, the lower side wall of the rotating plate is fixedly connected with a micro-cleaning motor, the output end of the micro-cleaning motor is transmission-connected to the dust suction pipe via a bevel gear transmission assembly, the lower side wall of the movable plate is fixedly connected with a micro-dust pump, and the air inlet end of the micro-dust pump is rotatably connected to the lower end of the dust suction pipe.

[0013] Preferably, the pretreatment component includes an annular box fixedly connected to the lower side wall of the movable plate, a metering pump is fixedly connected to the inner wall of the annular box, a feed end of the metering pump is connected to the annular box, a discharge end of the metering pump is fixedly connected to a nozzle, an ultrasonic sensor is fixedly connected to the lower side wall of the mounting seat, and the ultrasonic sensor is electrically connected to the PLC controller.

[0014] Preferably, a small electric push rod is fixedly connected to the lower side wall of the movable plate, a mobile end of the small electric push rod is fixedly connected to an electric grinding wheel, an upper side wall of the electric grinding wheel is fixedly connected to a conductive frame, the conductive frame is electrically connected to an external power supply, an induction plate is fixedly connected to the lower side wall of the movable plate, a conductive block is inlaid on the side wall of the induction plate close to the conductive frame, a warning light is fixedly connected to the rear side wall of the movable plate, and the warning light is electrically connected to the conductive block.

[0015] Preferably, a gloss meter is fixedly connected to the lower side wall of the annular box, and a probe of the gloss meter is arranged downward.

[0016] Preferably, a dust cover is fixedly connected to the lower side wall of the movable plate, and the dust cover is arranged above the arc tube.

[0017] Compared with the existing technology, the advantages of a laser cutting device for coal mining machine maintenance are:

[0018] 1. Through the detection and scraping components and cleaning components set up, during the process of laser cutting equipment cutting and repairing the coal mining machine, after detecting that there are dust particles blocking the optical components of the laser cutting equipment, the dust particles attached to the optical components can be automatically cleaned, avoiding the dust particles from blocking and scattering part of the laser beam. At the same time, the slag phenomenon formed on the surface of the component due to the blocking and scattering of the laser beam is automatically cleaned, ensuring the appearance quality of the cut parts.

[0019] 2. Through the pre-treatment components, when the laser cutting equipment is used to cut the cutting parts, the light-absorbing coating of appropriate thickness can be automatically sprayed on the metal material with higher reflectivity according to the material of the cutting parts, so as to promote the laser to penetrate the material surface better and enhance the material's absorption of the laser, thereby achieving efficient and high-quality cutting.

[0020] 3. By setting up a gloss meter, when the light-absorbing coating is applied to the surface of the cutting part and the cutting part is cut by laser cutting equipment, the curing degree of the light-absorbing coating can be automatically detected, thereby avoiding the problem that the light-absorbing coating is cut before it is completely cured. The uncured coating is affected by the impact of the laser and the heat generated during the cutting process, causing irregular deformation and flow, resulting in a significant increase in the roughness of the cutting surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a laser cutting device for coal mining machine maintenance provided by the present invention;

[0022] Figure 2 It is a structural schematic diagram of a pre-processing component in a laser cutting device for coal mining machine maintenance provided by the present invention;

[0023] Figure 3 It is a structural schematic diagram of a cleaning component in a laser cutting device for coal mining machine maintenance provided by the present invention;

[0024] Figure 4 It is a schematic diagram of the positional relationship between a cutting plate and a trigger block in a laser cutting device for coal mining machine maintenance provided by the present invention;

[0025] Figure 5 It is a schematic diagram of the internal structure of a horizontal cylinder in a laser cutting device for coal mining machine maintenance provided by the present invention;

[0026] Figure 6 It is a structural schematic diagram of a positioning component in a laser cutting device for coal mining machine maintenance provided by the present invention;

[0027] Figure 7 It is a right view of a cutting plate and a trigger block in a laser cutting device for coal mining machine maintenance provided by the present invention;

[0028] Figure 8 The invention provides a laser cutting device for coal mining machine maintenance. Figure 7 Enlarged schematic diagram of part A.

[0029] In the figure: 1 mounting base, 2 control panel, 3 PLC controller, 4 fixing frame, 5 vertical electric push rod, 6 linear motor, 7 moving plate, 8 laser cutting head, 9 detection scraping assembly, 91 vertical plate, 92 control motor, 10 connecting frame, 11 placement plate, 12 placement rod, 13 horizontal cylinder, 14 sliding block, 15 trigger switch, 16 square plate, 17 cutting plate, 18 trigger block, 19 connecting ring, 20 vertical frame, 21 conical block, 22 control switch, 23 positioning assembly, 231 positioning cylinder, 232 positioning block, 24 Positioning electric push rod, 25 rough block, 26 rough plate, 27 cleaning component, 271 cleaning electric push rod, 272 angle motor, 28 rotating plate, 29 dust suction pipe, 30 arc pipe, 31 bristles, 32 micro cleaning motor, 33 micro dust suction pump, 34 pretreatment component, 341 ring box, 342 metering pump, 35 nozzle, 36 ultrasonic sensor, 37 small electric push rod, 38 electric grinding wheel, 39 conductive frame, 40 induction plate, 41 conductive block, 42 ​​warning light, 43 gloss meter, 44 dust cover. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] like Figure 1-Figure 8 As shown, a laser cutting device for coal mining machine maintenance includes a mounting base 1 and a control panel 2 arranged on the upper side wall of the mounting base 1, a PLC controller 3 is fixedly connected to the upper side wall of the mounting base 1, a fixing frame 4 is fixedly connected to the upper side wall of the mounting base 1, a vertical electric push rod 5 is fixedly connected to the side wall of the fixing frame 4, a moving end of the vertical electric push rod 5 passes through the fixing frame 4 and is fixedly connected to a linear motor 6, and also includes:

[0032] The movable plate 7 is fixedly connected to the movable end of the linear motor 6, the lower side wall of the movable plate 7 is fixedly connected with a laser cutting head 8, the lower side wall of the movable plate 7 is connected with a detection and scraping component 9, the detection and scraping component 9 is electrically connected to the PLC controller 3, the detection and scraping component 9 includes a vertical plate 91 fixedly connected to the lower side wall of the movable plate 7, the right side wall of the vertical plate 91 is fixedly connected with a control motor 92, the output end of the control motor 92 passes through the vertical plate 91, and is fixedly connected with a connecting frame 10, the lower end of the connecting frame 10 is fixedly connected with a placing plate 11, the side wall of the placing plate 11 is connected with a placing rod 12 through a positioning component 23, the upper end of the placing rod 12 is fixedly connected with a horizontal cylinder 13, and the front inner wall of the horizontal cylinder 13 is fixedly connected with a sliding block 14 through a spring, and the lower inner wall of the horizontal cylinder 13 A trigger switch 15 is fixedly connected, and the trigger switch 15 is electrically connected to the PLC controller 3. A square plate 16 is fixedly connected to the upper side wall of the sliding block 14. A guide opening matching the square plate 16 is provided on the upper side wall of the horizontal cylinder 13. The upper end of the square plate 16 extends out of the guide opening and is fixedly connected to a cutting plate 17. A trigger block 18 is fixedly connected to the left side wall of the cutting plate 17. The front side wall of the trigger block 18 is an inclined structure. A groove is provided on the upper side wall of the trigger block 18, and a connecting ring 19 is fixedly connected to the inner wall of the groove. A vertical frame 20 is inserted in the connecting ring 19. The upper end of the vertical frame 20 extends out of the groove and is fixedly connected to a conical block 21. A control switch 22 is fixedly connected to the lower inner wall of the groove. The control switch 22 is electrically connected to the positioning component 23 through the PLC controller 3.

[0033] The cleaning component 27 is arranged on the side wall of the movable plate 7 and is used to clean the dust attached to the surface of the laser cutting head 8. The cleaning component 27 includes a cleaning electric push rod 271 fixedly connected to the upper side wall of the movable plate 7. The moving end of the cleaning electric push rod 271 passes through the movable plate 7 and is fixedly connected to an angle motor 272. The output end of the angle motor 272 is fixedly connected to a rotating plate 28. The side wall of the rotating plate 28 is rotatably connected to a dust suction pipe 29. The upper end of the dust suction pipe 29 is fixedly connected to an arc tube 30, and a plurality of dust suction holes are opened on the upper side wall of the arc tube 30. The upper inner wall of the arc tube 30 is fixedly connected to bristles 31. The lower side wall of the rotating plate 28 is fixedly connected to a micro A micro cleaning motor 32 is provided, the output end of the micro cleaning motor 32 is connected to the dust suction pipe 29 through a bevel gear transmission assembly, a micro dust suction pump 33 is fixedly connected to the lower side wall of the movable plate 7, and the air inlet end of the micro dust suction pump 33 is rotatably connected to the lower end of the dust suction pipe 29. When the laser cutting equipment is cutting and repairing the coal mining machine, after detecting that there are dust particles blocking the optical parts of the laser cutting equipment, the dust particles attached to the optical parts can be automatically cleaned, thereby preventing the dust particles from blocking and scattering part of the laser beam, and automatically cleaning the slag phenomenon formed on the surface of the parts due to the blocking and scattering of the laser beam, thereby ensuring the appearance quality of the cut parts;

[0034] The pretreatment component 34 is arranged on the side wall of the movable plate 7 and is located behind the laser cutting head 8. The pretreatment component 34 includes an annular box 341 fixedly connected to the lower side wall of the movable plate 7. The inner wall of the annular box 341 is fixedly connected with a metering pump 342. The feed end of the metering pump 342 is connected to the annular box 341. The discharge end of the metering pump 342 is fixedly connected with a nozzle 35. The lower side wall of the mounting seat 1 is fixedly connected with an ultrasonic sensor 36. The ultrasonic sensor 36 is electrically connected to the PLC controller 3. When the cutting piece is cut by the laser cutting equipment, a light-absorbing coating of a suitable thickness can be automatically sprayed on the metal material with a higher reflectivity according to the material of the cutting piece, so as to promote the laser to penetrate the material surface better and enhance the material's absorption of the laser, thereby achieving efficient and high-quality cutting.

[0035] The positioning assembly 23 includes a positioning cylinder 231 fixedly connected to the upper side wall of the placement plate 11, and the lower inner wall of the positioning cylinder 231 is fixedly connected to a positioning block 232 through a spring. The right side wall of the positioning block 232 is provided with a transverse groove, and a positioning electric push rod 24 is inserted into the transverse groove. The control switch 22 is electrically connected to the positioning electric push rod 24 through the PLC controller 3, and the moving end of the positioning electric push rod 24 is fixedly connected to a rough block 25. The right side inner wall of the positioning cylinder 231 is inlaid with a rough plate 26 that matches the rough block 25, which can automatically fix the position of the cutting plate 17 according to the thickness of the cutting piece.

[0036] A small electric push rod 37 is fixedly connected to the lower side wall of the movable plate 7, and an electric grinding wheel 38 is fixedly connected to the movable end of the small electric push rod 37. A conductive frame 39 is fixedly connected to the upper side wall of the electric grinding wheel 38, and the conductive frame 39 is electrically connected to an external power supply. An induction plate 40 is fixedly connected to the lower side wall of the movable plate 7, and a conductive block 41 is inlaid on the side wall of the induction plate 40 close to the conductive frame 39. A warning light 42 is fixedly connected to the rear side wall of the movable plate 7, and the warning light 42 is electrically connected to the conductive block 41, which can automatically clean the dust and impurities on the surface of the cutting piece and automatically detect the degree of wear of the electric grinding wheel 38.

[0037] The lower side wall of the annular box 341 is fixedly connected to a gloss meter 43, and the probe of the gloss meter 43 is set downward. When the light-absorbing coating is coated on the surface of the cutting piece and the cutting piece is cut by laser cutting equipment, the curing degree of the light-absorbing coating can be automatically detected, thereby avoiding the problem that cutting is performed before the light-absorbing coating is completely cured, and the uncured coating is affected by the impact of the laser and the heat generated during the cutting process, causing irregular deformation and flow, resulting in a significant increase in the roughness of the cutting surface.

[0038] A dust cover 44 is fixedly connected to the lower side wall of the movable plate 7 . The dust cover 44 is arranged above the arc tube 30 to prevent external dust from being adsorbed on the surface of the bristles 31 .

[0039] The operating principle of the present invention is now described as follows: the laser cutting equipment is placed on the surface of the workpiece to be cut by the coal mining machine. Then, the operator transmits an electrical signal to the PLC controller 3 through the control panel 2. After receiving the electrical signal, the PLC controller 3 first controls the ultrasonic sensor 36 to work. The ultrasonic sensor 36 first detects the material of the workpiece to be cut below (after the ultrasonic wave enters the metal material, it will propagate inside the metal in the form of longitudinal waves, transverse waves, etc. The physical properties of the metal material, such as density and elastic modulus, will affect the propagation speed and propagation path of the ultrasonic wave. Generally speaking, the greater the density and the higher the elastic modulus of the metal material, the faster the ultrasonic wave propagates therein. When the ultrasonic wave propagates in the metal material and encounters the interface of different media, for example, it encounters defects inside the metal, such as cracks, pores, inclusions, etc., the interface between the metal and other materials, or the boundary of the metal, etc., part of the ultrasonic wave will be reflected back. These reflected ultrasonic waves carry information about the internal structure of the metal. The receiving part of the sensor will receive the reflected ultrasonic wave signal and convert it into an electrical signal. By analyzing and processing these electrical signals, relevant information inside the metal material can be obtained);

[0040] When the PLC controller 3 detects the material of the workpiece to be cut through the ultrasonic sensor 36, the PLC controller 3 will control the small electric push rod 37 to work, and the small electric push rod 37 will drive the electric grinding wheel 38 to move downward together, and a pressure sensor is provided between the small electric push rod 37 and the electric grinding wheel 38. After the electric grinding wheel 38 contacts the workpiece to be polished, it will be detected by the pressure sensor. When the pressure sensor detects that the extrusion force between the electric grinding wheel 38 and the workpiece to be polished reaches a set threshold, the pressure sensor will control the small electric push rod 37 to stop working through the PLC controller 3 (the electric grinding wheel 38 will drive the conductive frame 39 to move together during the downward movement. When the electric grinding wheel 3 When the wear is serious, the electric grinding wheel 38 needs to drive the conductive frame 39 to move downward a farther distance, so that the pressure sensor detects the set threshold value and controls the small electric push rod 37 to stop working. At this time, the electric grinding wheel 38 will drive the conductive frame 39 to contact with the conductive block 41, and the conductive frame 39 is electrically connected to the external power supply, and the conductive block 41 is electrically connected to the PLC controller 3. When the conductive frame 39 and the conductive block 41 are in contact, an electrical signal will be transmitted to the PLC controller 3, and the PLC controller 3 will control the warning light 42 to work, reminding the operator to replace the worn electric grinding wheel 38 in time. When the PLC controller 3 receives the electrical signal from the pressure sensor, the PLC controller 3 will control the electric The electric grinding wheel 38 rotates and controls the linear motor 6 to work. The linear motor 6 drives the electric grinding wheel 38 to work together. The electric grinding wheel 38 is used to clean the impurities at the cutting part of the cutting part. During the movement of the electric grinding wheel 38, the PLC controller 3 controls the metering pump 342 to work. The metering pump 342 sprays the light-absorbing coating inside the annular box 341 to the surface of the cutting part through the nozzle 35, and the PLC controller 3 controls the working efficiency of the metering pump 342 according to the material of the metal (the thickness of the light-absorbing coating of aluminum and aluminum alloy products is usually 10-50 microns, the thickness of the light-absorbing coating of copper and copper alloy is about 15-60 microns, the common carbon steel for construction, the alloy steel for ordinary mechanical processing and other steel The thickness of the light-absorbing coating of the product is generally between 20-80 microns, and the thickness of the light-absorbing coating in the laser cutting of titanium and titanium alloy products is roughly between 10-40 microns). After the light-absorbing coating is sprayed, the operator can use a hot air gun or an infrared lamp or other drying equipment to dry it, and during the drying process, the curing degree of the light-absorbing coating is detected every thirty seconds by the gloss meter 43 (the gloss meter 43 usually has a light source with a specific wavelength and intensity. When the light-absorbing coating is detected, the light source will emit light to irradiate the surface of the coating. After the light irradiates the surface of the light-absorbing coating, it will reflect according to the reflective characteristics of the coating surface. The surface of the cured coating is smooth and uniform, and the reflected light is relatively concentrated and regular;The surface of the uncured coating is rough, and the reflected light will scatter in all directions. The receiving device of the gloss meter 43 will collect the reflected light. According to the intensity, angle and other information of the received reflected light, the gloss meter 43 calculates through the built-in algorithm to obtain a value representing the glossiness of the coating. This value is generally expressed in gloss units GU. Different gloss meters 43 may have different calculation methods and calibration standards, but in general, the glossiness value is determined based on the characteristics of the reflected light. Each light-absorbing coating material has a rough glossiness value range after being fully cured, which is determined through a large number of tests and practical application experience. For example, the glossiness value of a specific light-absorbing coating material may be between 20-30GU after being cured);

[0041] When the gloss meter 43 detects that the light-absorbing coating is cured, the gloss meter 43 will transmit an electrical signal to the PLC controller 3, and the PLC controller 3 will control the small electric push rod 37 to drive the electric grinding wheel 38 to move upward to the initial position, and drive the control motor 92 to work. The control motor 92 will drive the connecting frame 10 to be set vertically, and then the PLC controller 3 controls the vertical electric push rod 5 to drive the laser cutting head 8 to move downward to the set position, so that the distance between the laser cutting head 8 and the plate is about 8-15 mm, and then the PLC controller 3 controls the linear motor 6 and the laser cutting head 8 to work together, and uses the linear motor 6 to drive the laser cutting head 8 to cut the plate below. At the same time, the linear motor 6 will drive the connecting frame 10 and the placement plate 11 to move backward together through the moving plate 7 (the connecting frame 10 will pass through the cut seam of the plate). The placing plate 11 will drive the cutting plate 17 and the trigger block 18 to move together, and the inclined surface of the trigger block 18 will first contact the part to be cut. When the trigger block 18 contacts the part to be cut, under the action of the inclined surface of the trigger block 18, the trigger block 18 will drive the cutting plate 17 and the placing rod 12 to move downward. When the trigger block 18 moves to the bottom of the part to be cut, the plate will be squeezed to the conical block 21, and the conical block 21 will drive the vertical frame 20 to move downward. The vertical frame 20 is used to squeeze the control switch 22, and the control switch 22 will control the positioning electric push rod 24 to work through the PLC controller 3. The positioning electric push rod 24 will drive the rough block 25 to contact the rough plate 26, and the friction between the rough block 25 and the rough plate 26 fixes the positions of the positioning block 232, the placing rod 12, the trigger block 18 and the cutting plate 17;

[0042] When there is a lot of dust on the surface of the laser cutting head 8, the laser energy transmission and cutting effect are affected, so that the slag generated during the cutting process cannot be effectively blown away from the cutting area, and the slag adheres to the cutting edge to form slag. The cutting plate 17 will cut the slag during the movement. When the cutting plate 17 contacts the slag and cuts, the cutting plate 17 will drive the sliding block 14 to move through the square plate 16, so that the sliding block 14 slides in the horizontal cylinder 13. During the sliding process of the sliding block 14 in the horizontal cylinder 13, it will squeeze the trigger switch 15, and the trigger switch 15 will send an electrical signal to the PLC controller 3. After receiving the electrical signal, the PLC controller 3 indicates that there is a lot of dust attached to the surface of the laser cutting head 8. The PLC controller 3 will control the linear motor 6 to move back, and drive the control motor 92 to drive the connecting frame 10 to detach from the cutting gap of the plate. Then the PLC controller 3 controls the vertical electric push rod 5 to drive the linear motor 6 and the laser cutting head 8 to move upward to the set position. Then the PLC controller 3 controls the cleaning electric push rod 271 to work, and the cleaning electric push rod 271 drives the angle motor 272 and the rotating plate 28 to move downward a certain distance. Then the PLC controller 3 controls the angle motor 272 to work, and the angle motor 272 drives the rotating plate 28 to rotate. The rotating plate 28 drives the arc tube 30 to rotate to the bottom of the laser cutting head 8. Then the PLC controller 3 controls the cleaning electric push rod 271 to work, so that the cleaning electric push rod 271 drives the arc tube 30 to move upward, so that the bristles 31 contact the laser cutting head 8. Then the PLC controller 3 controls the micro-cleaning motor 32 and the micro-dust pump 33 to work at the same time. The micro-cleaning motor 32 controls the rotation of the dust suction pipe 29 and the arc tube 30 through the bevel gear transmission assembly, and uses the bristles 31 on the surface of the arc tube 30 to clean up the dust attached to the surface of the laser cutting head 8. At the same time, the micro-dust pump 33 is used to discharge the cleaned dust, thereby ensuring the cutting performance of the laser cutting head 8.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A laser cutting device for coal mining machine maintenance, comprising a mounting seat (1) and a control panel (2) arranged on the upper side wall of the mounting seat (1), wherein the upper side wall of the mounting seat (1) is fixedly connected to a PLC controller (3), the upper side wall of the mounting seat (1) is fixedly connected to a fixing frame (4), the side wall of the fixing frame (4) is fixedly connected to a vertical electric push rod (5), the moving end of the vertical electric push rod (5) passes through the fixing frame (4) and is fixedly connected to a linear motor (6), characterized in that: Also includes: A movable plate (7) is fixedly connected to the movable end of the linear motor (6); a laser cutting head (8) is fixedly connected to the lower side wall of the movable plate (7); a detection and scraping component (9) is connected to the lower side wall of the movable plate (7); and the detection and scraping component (9) is electrically connected to the PLC controller (3); A cleaning component (27), arranged on the side wall of the movable plate (7), and used for cleaning dust attached to the surface of the laser cutting head (8); The pre-processing component (34) is arranged on the side wall of the movable plate (7) and is located behind the laser cutting head (8).

2. The laser cutting equipment for coal mining machine maintenance according to claim 1, characterized in that: The detection and scraping assembly (9) comprises a vertical plate (91) fixedly connected to the lower side wall of the moving plate (7); the right side wall of the vertical plate (91) is fixedly connected to a control motor (92); the output end of the control motor (92) passes through the vertical plate (91) and is fixedly connected to a connecting frame (10); the lower end of the connecting frame (10) is fixedly connected to a placement plate (11); the side wall of the placement plate (11) is connected to a placement rod (12) through a positioning assembly (23); the upper end of the placement rod (12) is fixedly connected to a transverse cylinder (13); the front inner wall of the transverse cylinder (13) is fixedly connected to a sliding block (14) through a spring; the lower inner wall of the transverse cylinder (13) is fixedly connected to a trigger switch (15); the trigger switch (15) is electrically connected to a PLC controller (3); the sliding block (14) ) is fixedly connected to the upper side wall of the horizontal cylinder (13), a guide opening matching the square plate (16) is provided on the upper side wall of the horizontal cylinder (13), the upper end of the square plate (16) extends out of the guide opening and is fixedly connected to a cutting plate (17), a trigger block (18) is fixedly connected to the left side wall of the cutting plate (17), the front side wall of the trigger block (18) is an inclined structure, a groove is provided on the upper side wall of the trigger block (18), and a connecting ring (19) is fixedly connected to the inner wall of the groove, a vertical frame (20) is inserted into the connecting ring (19), the upper end of the vertical frame (20) extends out of the groove and is fixedly connected to a conical block (21), and a control switch (22) is fixedly connected to the lower inner wall of the groove, and the control switch (22) is electrically connected to the positioning component (23) through the PLC controller (3).

3. The laser cutting equipment for coal mining machine maintenance according to claim 2, characterized in that: The positioning assembly (23) comprises a positioning cylinder (231) fixedly connected to the upper side wall of the placement plate (11); a positioning block (232) is fixedly connected to the lower inner wall of the positioning cylinder (231) via a spring; a transverse groove is provided on the right side wall of the positioning block (232), and a positioning electric push rod (24) is inserted into the transverse groove; the control switch (22) is electrically connected to the positioning electric push rod (24) via a PLC controller (3); a rough block (25) is fixedly connected to the movable end of the positioning electric push rod (24); and a rough plate (26) matching the rough block (25) is inlaid on the right side inner wall of the positioning cylinder (231).

4. The laser cutting equipment for coal mining machine maintenance according to claim 1, characterized in that: The cleaning assembly (27) comprises a cleaning electric push rod (271) fixedly connected to the upper side wall of the moving plate (7); the moving end of the cleaning electric push rod (271) passes through the moving plate (7) and is fixedly connected to an angle motor (272); the output end of the angle motor (272) is fixedly connected to a rotating plate (28); the side wall of the rotating plate (28) is rotatably connected to a dust suction pipe (29); the upper end of the dust suction pipe (29) is fixedly connected to an arc pipe (30); and the arc pipe (30) is connected to the rotating plate (28); The upper side wall of the movable plate (7) is provided with a plurality of dust suction holes, the upper inner wall of the arc tube (30) is fixedly connected with bristles (31), the lower side wall of the rotating plate (28) is fixedly connected with a micro cleaning motor (32), the output end of the micro cleaning motor (32) is transmission-connected to the dust suction pipe (29) through a bevel gear transmission assembly, the lower side wall of the movable plate (7) is fixedly connected with a micro dust suction pump (33), and the air inlet end of the micro dust suction pump (33) is rotationally connected to the lower end of the dust suction pipe (29).

5. The laser cutting equipment for coal mining machine maintenance according to claim 1, characterized in that: The pretreatment component (34) comprises an annular box (341) fixedly connected to the lower side wall of the movable plate (7); a metering pump (342) is fixedly connected to the inner wall of the annular box (341); a feed end of the metering pump (342) is connected to the annular box (341); a discharge end of the metering pump (342) is fixedly connected to a nozzle (35); an ultrasonic sensor (36) is fixedly connected to the lower side wall of the mounting seat (1); and the ultrasonic sensor (36) is electrically connected to the PLC controller (3).

6. The laser cutting equipment for coal mining machine maintenance according to claim 5, characterized in that: The lower side wall of the movable plate (7) is fixedly connected to a small electric push rod (37), the movable end of the small electric push rod (37) is fixedly connected to an electric grinding wheel (38), the upper side wall of the electric grinding wheel (38) is fixedly connected to a conductive frame (39), the conductive frame (39) is electrically connected to an external power supply, the lower side wall of the movable plate (7) is fixedly connected to an induction plate (40), the side wall of the induction plate (40) close to the conductive frame (39) is inlaid with a conductive block (41), and the rear side wall of the movable plate (7) is fixedly connected to a warning light (42), the warning light (42) and the conductive block (41) are electrically connected.

7. The laser cutting equipment for coal mining machine maintenance according to claim 6, characterized in that: A gloss meter (43) is fixedly connected to the lower side wall of the annular box (341), and a probe of the gloss meter (43) is arranged downward.

8. The laser cutting equipment for coal mining machine maintenance according to claim 4, characterized in that: A dust cover (44) is fixedly connected to the lower side wall of the movable plate (7), and the dust cover (44) is arranged above the arc tube (30).

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