A tool for overhauling a coal mining machine component

Abstract

The present application belongs to the technical field of welding, and particularly relates to a tool for overhauling a coal mining machine component, comprising an electric guide rail and a mounting seat arranged above the electric guide rail, wherein the electric guide rail is in transmission connection with the mounting seat, a side wall of the electric guide rail is fixedly provided with a welding machine and a control cabinet, the welding machine and the electric guide rail are both in electrical connection with the control cabinet, and the tool further comprises a positioning groove, which is arranged at the top center of the mounting seat and is provided with a clamping and fixing mechanism at the groove bottom; a top plate is arranged above the mounting seat, the electric guide rail is provided with a supporting and lifting mechanism and is fixedly connected with the top plate through the supporting and lifting mechanism. The tool can weld and fix the drum of the coal mining machine, and automatically indicates the position of defects of the drum before welding, thereby assisting in improving the convenience and efficiency of welding.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of welding, and particularly relates to a tool for overhauling a coal mining machine component. BACKGROUND

[0002] A coal mining machine drum is a key component of coal mining operation and undertakes important tasks such as coal cutting and coal loading. In long-term high-intensity work, the cutting tooth seat and the blade of the drum are prone to wear and tear and cracks, which affect the coal mining efficiency and quality. Overhauling and welding become a key link for restoring the performance of the drum. The damaged parts can be repaired to put the drum into use again.

[0003] At present, when the coal mining machine drum is welded and repaired, the coal mining machine drum needs to be first disassembled from the coal mining machine, cleaned, then installed on a special tool, and the defects existing on the drum are checked, and then the defects are welded and repaired. For example, a tool for overhauling a coal mining machine component is disclosed in patent No. CN219665608U.

[0004] The coal mining machine drum includes a drum body, a blade, a cutting tooth seat, a cutting tooth and other components, which have a relatively complex shape (as shown in the drawing), making it difficult for personnel to find defects before welding, and the defect position is more likely to be missed, affecting the welding and repair effect of the coal mining machine drum. It is more cumbersome to detect the coal mining machine drum by a special detection device, which affects the efficiency of welding and repair. Figure 1 SUMMARY

[0005] The purpose of the present application is to provide a tool for overhauling a coal mining machine component.

[0006] To achieve the above purpose, the following technical scheme is adopted: a tool for overhauling a coal mining machine component, comprising an electric guide rail and a mounting seat arranged above the electric guide rail, the electric guide rail is in transmission connection with the mounting seat, the side wall of the electric guide rail is fixedly installed with a welding machine and a control cabinet, the welding machine and the electric guide rail are in electrical connection with the control cabinet, and further comprising:

[0007] A positioning groove is arranged at the top center of the mounting seat, and a clamping and fixing mechanism is installed at the groove bottom of the positioning groove;

[0008] A top plate is arranged above the mounting seat, the electric guide rail is installed with a supporting and lifting mechanism, and the supporting and lifting mechanism is in fixed connection with the top plate;

[0009] An outer sleeve is arranged below the top plate, the top plate is installed with a rotary driving mechanism, and the rotary driving mechanism is in connection with the outer sleeve;

[0010] ​An electric heater is arranged inside the outer sleeve coaxially with the positioning groove, and is fixedly installed at the bottom of the top plate.

[0011] A plurality of heat conduction detection units are installed on the side wall of the outer sleeve.

[0012] A vacuumizing unit is installed at the top of the top plate, and the suction end of the vacuumizing unit is connected with the inside of the outer sleeve, and a cleaning mechanism connected with the air outlet end of the vacuumizing unit is installed at the bottom of the outer sleeve.

[0013] A plurality of indication units are installed at the top of the cleaning mechanism, each heat conduction detection unit is electrically connected with a corresponding indication unit through a control cabinet, and the support lifting mechanism, the rotary driving mechanism, the vacuumizing unit, the electric heater and the cleaning mechanism are electrically connected with the control cabinet.

[0014] Preferably, the clamping and fixing mechanism comprises a strip-shaped slot formed in the bottom of the positioning groove, two sliding blocks are slidably arranged in the inside of the strip-shaped slot, opposite two slot walls of the strip-shaped slot are fixedly inserted with transverse electric oil cylinders, and the telescopic ends of the two transverse electric oil cylinders are fixedly connected with the side walls of the same side sliding blocks, a pressing column is fixedly installed at the top of each sliding block, and the two transverse electric oil cylinders are electrically connected with the control cabinet.

[0015] Preferably, the support lifting mechanism comprises a support seat arranged above the top plate, a plurality of support rods are fixedly arranged between the end surface of the support seat and the electric guide rail, a vertical electric oil cylinder is fixedly inserted with the end surface of the support seat, and the telescopic end of the vertical electric oil cylinder is fixedly connected with the top plate.

[0016] Preferably, the rotary driving mechanism comprises a speed reducer motor fixedly installed at the top of the top plate, the output shaft of the speed reducer motor is rotatably connected with the end surface of the top plate, a driving gear is installed on the output shaft of the speed reducer motor, the driving gear is in meshing transmission with the upper end of the outer side wall of the outer sleeve, and the speed reducer motor is electrically connected with the control cabinet.

[0017] Preferably, each heat conduction detection unit comprises a detection electromagnetic push rod fixedly inserted with the side wall of the outer sleeve, a heat insulation cylinder is fixedly installed at the telescopic end of the detection electromagnetic push rod, an insulating heat conduction piston is slidably arranged in the inside of the heat insulation cylinder, two springs are fixedly arranged between the inside top of the heat insulation cylinder and the insulating heat conduction piston, an insulating cover is fixedly installed at the top of the insulating heat conduction piston, a thermal sensitive element is fixedly installed in the inside of the insulating cover, one end of the thermal sensitive element is in contact with the end surface of the insulating heat conduction piston, and the thermal sensitive element and the detection electromagnetic push rod are electrically connected with the control cabinet.

[0018] Preferably, the vacuum unit comprises a suction pump mounted on one side of the top of the top plate, the suction end of the suction pump is fixedly provided with an air suction pipe, and the air suction end of the air suction pipe penetrates the top plate and is connected with the inside of the sleeve; the air outlet end of the suction pump is fixedly provided with an air outlet pipe; the suction pump is electrically connected with the control cabinet.

[0019] Preferably, the cleaning mechanism comprises a hollow ring fixedly installed at the bottom of the sleeve, the inside of the hollow ring is fixedly provided with an annular partition plate, the side wall of the annular partition plate is provided with a plurality of air holes, and the inside of each air hole is fixedly provided with a first normally closed electromagnetic valve; the inner wall of the hollow ring is fixedly provided with a tapered air jet pipe communicated with each air hole; the side wall of the air suction pipe is fixedly provided with a branch suction pipe; the pipe wall of the air outlet pipe is fixedly provided with a branch pipe communicated with the inside of the hollow ring; the inside of the branch suction pipe and the branch pipe is provided with a first normally open electromagnetic valve; the inside of the air suction pipe and the air outlet pipe is provided with a second normally closed electromagnetic valve, one of the second normally closed electromagnetic valves is arranged at the air suction end of the air suction pipe, and the other second normally closed electromagnetic valve is arranged at the air outlet end of the air outlet pipe; each of the first normally closed electromagnetic valves, the two first normally open electromagnetic valves and the two second normally closed electromagnetic valves are electrically connected with the control cabinet.

[0020] Preferably, each of the indication units comprises a magnetic isolation cylinder fixedly installed at the top of the hollow ring, the inside of the magnetic isolation cylinder is fixedly provided with an indication electromagnetic push rod, the telescopic end of the indication electromagnetic push rod is fixedly provided with an insulating block, the top of the insulating block is fixedly provided with a conductive rod, the inside of the magnetic isolation cylinder is slidably provided with an insulating installation piston above the conductive rod, the bottom of the insulating installation piston is fixedly provided with a conductive sleeve matched with the conductive rod, the inner wall of the side of the hollow ring away from the annular partition plate is fixedly provided with a circular sleeve, the inside of the circular sleeve is slidably provided with a horizontal push piston, the side wall of the side of the horizontal push piston away from the annular partition plate is fixedly provided with a marker rod, the side wall of the hollow ring is provided with a push-out hole matched with the marker rod, the inside of the circular sleeve away from the marker rod is provided with a second normally open electromagnetic valve, the conductive rod and the conductive sleeve are electrically connected with the second normally open electromagnetic valve through the control cabinet, and the indication electromagnetic push rod is electrically connected with the control cabinet.

[0021] Compared with the prior art, the tool for overhauling the parts of the coal mining machine has the advantages that:

[0022] 1. Through the cooperation of the electric guide rail, mounting seat, control cabinet and welding machine, the coal mining machine drum can be welded and repaired, and through the cooperation of the positioning groove and clamping fixing mechanism, the coal mining machine drum can be fixed before welding to ensure the stability during welding, and through the cooperation of the top plate, supporting lifting mechanism, outer sleeve, electric heater and multiple heat conduction detection units, the cracks and wear defects on the coal mining machine drum can be quickly and comprehensively inspected before welding, so that defects can be minimized and the convenience and efficiency of welding can be improved, and the preheating of the coal mining machine drum before welding can reduce the influence of thermal stress on the coal mining machine drum during welding.

[0023] 2. Through the vacuum pumping unit, the air inside the outer sleeve can be pumped out before welding to reduce the influence of air on the accuracy of heat conduction detection, and the cleaning mechanism can further remove dust, water and other substances that may exist on the surface of the coal mining machine drum before welding.

[0024] 3. Through the indication unit, the detection results of the heat conduction detection unit can be automatically indicated at each defect position in cooperation with the cleaning mechanism and vacuum pumping unit, so that the position of the defect on the coal mining machine drum can be quickly positioned by manual operation, and the convenience of welding and repair can be further improved. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a perspective structural schematic view of the coal mining machine drum provided by the present application;

[0026] Figure 2 is a structural schematic view of a tooling fixture for repairing a coal mining machine component provided by the present application;

[0027] Figure 3 is a structural schematic view of a mounting seat of a tooling fixture for repairing a coal mining machine component provided by the present application;

[0028] Figure 4 is a structural schematic view of the internal structure of the mounting seat of the tooling fixture for repairing a coal mining machine component provided by the present application;

[0029] Figure 5 is a structural schematic view of the internal structure of the outer sleeve of the tooling fixture for repairing a coal mining machine component provided by the present application;

[0030] Figure 6 is a connection structure schematic view of the heat conduction detection unit and the outer sleeve of the tooling fixture for repairing a coal mining machine component provided by the present application;

[0031] Figure 7 is a structural schematic view of the internal structure of the heat conduction detection unit of the tooling fixture for repairing a coal mining machine component provided by the present application;

[0032] Figure 8 is a structural schematic view of a vacuum unit of a tooling fixture for overhauling a coal mining machine component provided by the present application;

[0033] Figure 9 is a structural schematic view of a vacuum unit of a tooling fixture for overhauling a coal mining machine component provided by the present application; Figure 5 is an enlarged view of the structure of the V part in the middle.

[0034] In the figure: 1 electric guide rail, 2 mounting seat, 3 welding machine, 4 control cabinet, 5 positioning groove, 6 clamping and fixing mechanism, 61 bar-shaped groove, 62 sliding block, 63 transverse electric oil cylinder, 64 abutting column, 65 notch groove, 7 top plate, 8 supporting and lifting mechanism, 81 supporting rod, 82 supporting seat, 83 vertical electric oil cylinder, 9 outer sleeve, 10 rotary driving mechanism, 101 speed reduction motor, 102 driving gear, 11 electric heater, 12 heat conduction detection unit, 121 detection electromagnetic push rod, 122 heat insulation cylinder, 123 insulated heat conduction piston, 124 spring, 125 insulating cover, 126 thermosensitive element, 13 vacuum unit, 131 suction pump, 132 air suction pipe, 133 air outlet pipe, 14 cleaning mechanism, 141 hollow circular ring, 142 annular partition plate, 143 air hole, 144 first normally closed electromagnetic valve, 145 conical air jet pipe, 146 separate suction pipe, 147 separate flow pipe, 148 first normally open electromagnetic valve, 149 second normally closed electromagnetic valve, 15 indication unit, 151 magnetic isolation cylinder, 152 indication electromagnetic push rod, 153 insulating block, 154 conductive rod, 155 insulating mounting piston, 156 conductive sleeve, 157 circular sleeve, 158 transverse push piston, 159 marking rod, 16 push-out hole, 17 second normally open electromagnetic valve. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0036] As Figures 1-9As shown, a coal winning machine component overhauls tool, including electric guide rail 1 and setting on the electric guide rail 1 above the mounting seat 2, electric guide rail 1 with mounting seat 2 transmission connection, electric guide rail 1's side wall fixedly installed with welding machine 3 and control cabinet 4, welding machine 3 and electric guide rail 1 are electrically connected with control cabinet 4, still include: positioning groove 5, positioning groove 5 is opened in the top center of mounting seat 2, the groove bottom of positioning groove 5 is installed with clamping fixed mechanism 6, clamping fixed mechanism 6 includes the strip-shaped groove 61 opened in the bottom of positioning groove 5, the inside of strip-shaped groove 61 is slidably provided with two sliders 62, the opposite two groove walls of strip-shaped groove 61 are fixedly inserted with transverse electric oil cylinder 63, and the telescopic ends of the two transverse electric oil cylinders 63 are fixedly connected with the side wall of the same side slider 62, the top of the two sliders 62 is fixedly installed with the abutting column 64, the two transverse electric oil cylinders 63 are electrically connected with the control cabinet 4, the end face of mounting seat 2 is provided with the notched groove 65 communicated with positioning groove 5, the notched groove 65 is convenient for accurately indicating the angle of the installed drum, electric guide rail 1 includes screw rod, screw nut, bearing, driving part, moving part and other components, the driving part drives the screw rod to rotate, the moving part is driven to move by the screw nut, the mounting seat 2 is installed on the moving part, so that the mounting seat 2 can move stably, this is the existing mature technology, so here is not repeated.

[0037] The top plate 7 is arranged above the mounting seat 2, the electric guide rail 1 is provided with the supporting lifting mechanism 8, and is fixedly connected with the top plate 7 through the supporting lifting mechanism 8, the supporting lifting mechanism 8 includes the supporting seat 82 arranged above the top plate 7, a plurality of supporting rods 81 are fixedly arranged between the supporting seat 82 and the end face of the electric guide rail 1, the vertical electric oil cylinder 83 is fixedly inserted into the end face of the supporting seat 82, and the telescopic end of the vertical electric oil cylinder 83 is fixedly connected with the top plate 7, the vertical electric oil cylinder 83 is electrically connected with the control cabinet 4.

[0038] The outer sleeve 9 is arranged below the top plate 7, the top plate 7 is provided with the rotary driving mechanism 10, and is connected with the outer sleeve 9 through the rotary driving mechanism 10, the rotary driving mechanism 10 includes the reduction motor 101 fixedly installed on the top of the top plate 7, the output shaft of the reduction motor 101 is rotatably connected with the end face of the top plate 7, the output shaft of the reduction motor 101 is provided with the driving gear 102, the driving gear 102 is in meshing transmission with the outer side wall upper end of the outer sleeve 9, the reduction motor 101 is electrically connected with the control cabinet 4, the side wall of the outer sleeve 9 is provided with the card teeth matched with the driving gear 102, and the driving gear 102 drives the outer sleeve 9 to rotate through the card teeth.

[0039] The electric heater 11 is arranged inside the outer sleeve 9 and coaxial with the positioning groove 5, and is fixedly installed at the bottom of the top plate 7. A plurality of heat conduction detection units 12 are installed on the side wall of the outer sleeve 9. Each heat conduction detection unit 12 comprises a detection electromagnetic push rod 121 fixedly inserted into the side wall of the outer sleeve 9. The telescopic end of the detection electromagnetic push rod 121 is fixedly installed with a heat insulation cylinder 122. An insulating heat conduction piston 123 is slidably arranged inside the heat insulation cylinder 122. Two springs 124 are fixedly arranged between the insulating heat conduction piston 123 and the inner top of the heat insulation cylinder 122. An insulating cover 125 is fixedly installed at the top of the insulating heat conduction piston 123. A thermosensitive element 126 is fixedly installed inside the insulating cover 125. One end of the thermosensitive element 126 is in contact with the end face of the insulating heat conduction piston 123. The thermosensitive element 126 and the detection electromagnetic push rod 121 are electrically connected with the control cabinet 4. The thermosensitive element 126 has a resistance that decreases with the increase of temperature in the range of 10-200℃.

[0040] The vacuumizing unit 13 is installed at the top of the top plate 7, and the suction end of the vacuumizing unit 13 is in communication with the inside of the outer sleeve 9. The bottom of the outer sleeve 9 is installed with a cleaning mechanism 14 in communication with the air outlet end of the vacuumizing unit 13. The vacuumizing unit 13 comprises a suction pump 131 installed at one side of the top of the top plate 7. The suction end of the suction pump 131 is fixedly installed with a suction pipe 132. The air inlet end of the suction pipe 132 penetrates through the top plate 7 and is in communication with the inside of the outer sleeve 9. The air outlet end of the suction pump 131 is fixedly installed with an air outlet pipe 133. The suction pump 131 is electrically connected with the control cabinet 4. The suction pump 131 works to suck out the air inside the outer sleeve 9 through the suction pipe 132.

[0041] The cleaning mechanism 14 comprises a hollow ring 141 fixedly installed at the bottom of the outer cover 9, an annular partition plate 142 is fixedly installed inside the hollow ring 141, a plurality of air holes 143 are formed in the side wall of the annular partition plate 142, and a first normally closed electromagnetic valve 144 is fixedly installed inside each air hole 143; a conical air jet pipe 145 in communication with each air hole 143 is fixedly inserted into the inner wall of the hollow ring 141; a branch suction pipe 146 is fixedly inserted into the side wall of the air suction pipe 132; a branch flow pipe 147 is fixedly inserted into the pipe wall of the air outlet pipe 133 and is in communication with the inside of the hollow ring 141; a first normally open electromagnetic valve 148 is installed inside the branch suction pipe 146 and the branch flow pipe 147; a second normally closed electromagnetic valve 149 is installed inside the air suction pipe 132 and the air outlet pipe 133, one of the second normally closed electromagnetic valves 149 is arranged at the air inlet end of the air suction pipe 132, and the other second normally closed electromagnetic valve 149 is arranged at the air outlet end of the air outlet pipe 133; each first normally closed electromagnetic valve 144, the two first normally open electromagnetic valves 148 and the two second normally closed electromagnetic valves 149 are electrically connected with the control cabinet 4; and the inlet hole diameter of the conical air jet pipe 145 is larger than the outlet hole diameter, so as to improve the jet pressure and speed of the airflow and improve the cleaning effect of the water, dust and the like on the surface of the roller.

[0042] A plurality of indicating units 15 are mounted on the top of the cleaning mechanism 14. Each thermal conductivity detection unit 12 is electrically connected to the corresponding indicating unit 15 through the control cabinet 4. The supporting lifting mechanism 8, the rotating drive mechanism 10, the vacuum unit 13, the electric heater 11 and the cleaning mechanism 14 are electrically connected to the control cabinet 4. Each indicating unit 15 includes a magnetic isolation cylinder 151 fixedly mounted on the top of the hollow ring 141. An indicating electromagnetic push rod 152 is fixedly mounted inside the magnetic isolation cylinder 151. An insulating block 153 is fixedly mounted on the telescopic end of the indicating electromagnetic push rod 152, and a conductive rod 154 is fixedly mounted on the top of the insulating block 153. An insulating mounting piston 155 is slidably provided at a position above the conductive rod 154 inside the magnetic isolation cylinder 151, and a conductive sleeve 156 matching the conductive rod 154 is fixedly mounted on the bottom of the insulating mounting piston 155. A circular sleeve 156 is fixedly mounted on the inner wall of the hollow ring 141 away from the annular partition 142. 57, and a horizontal push piston 158 is provided for sliding inside the circular sleeve 157, and a marking rod 159 is fixedly installed on the side wall of the horizontal push piston 158 away from the annular partition 142, and a push-out hole 16 matching the marking rod 159 is opened on the side wall of the hollow circular ring 141, and a second normally open solenoid valve 17 is installed at a position inside the circular sleeve 157 away from the side of the marking rod 159, and the conductive rod 154 and the conductive sleeve 156 are electrically connected to the second normally open solenoid valve 17 through the control cabinet 4, and the indicating electromagnetic push rod 152 is electrically connected to the control cabinet 4. After each maintenance is completed, a thin rod or other tool is used to push the insulating installation piston 155 back and reset it through the opening at the top of the magnetic isolation cylinder 151. The detection electromagnetic push rod 121 and the indicating electromagnetic push rod 152 both include components such as a cylinder, a telescopic rod, an electromagnetic component, a permanent magnet, and an elastic element. After the electromagnetic component is energized, the permanent magnet will be repelled by the action of like-charge repulsion, thereby driving the telescopic rod to extend.

[0043] The operating principle of the present invention is described as follows: After the drum removed from the coal mining machine is cleaned, the drum is placed on the mounting base 2 so that the drum body ( Figure 1 The head end of the cylinder is marked as a Figure 1 The position marked b in the figure is placed in the positioning groove 5, and then the clamping and fixing button on the control cabinet 4 is activated. At this time, the control cabinet 4 will control the two horizontal electric cylinders 63 to work at a timer. The two horizontal electric cylinders 63 can drive the two slide blocks 62 to move in opposite directions, thereby driving the two pressure columns 64 to move in opposite directions. After the timing of the horizontal electric cylinders 63 is completed, the side walls of the two pressure columns 64 are against the inner wall of the drum, thereby fixing the drum. After the drum is fixed, the control cabinet 4 controls the electric guide rail 1 to work at a timer. The electric guide rail 1 can drive the mounting seat 2 to move. After the electric guide rail 1 finishes working, the mounting seat 2 is directly below the top plate 7, and then the inspection button of the control cabinet 4 is activated.

[0044] When the inspection button of the control cabinet 4 is started, the control cabinet 4 controls the vertical electric oil cylinder 83 to work regularly, the vertical electric oil cylinder 83 drives the top plate 7 to move downward with the outer sleeve 9, at the same time, the control cabinet 4 controls the suction pump 131, the first normally closed electromagnetic valve 144 inside each air hole 143, the second normally open electromagnetic valve 17 inside each circular sleeve 157 and the reduction motor 101 to work, when the suction pump 131 works, its suction end will suck the external air through the air suction pipe 132 and the branch suction pipe 146, and then input the air flow into the hollow ring 141 through the air outlet pipe 133 and the branch flow pipe 147, and finally blow out from each conical air jet pipe 145 through each air hole 143, while the reduction motor 101 works, it can drive the outer sleeve 9 to rotate at a constant speed through the driving gear 102, when each conical air jet pipe 145 moves to the position of the roller, the air flow blown out from each conical air jet pipe 145 will blow to the surface of the roller, so as to blow off the water and dust (the water remaining after washing the roller in the previous process and the dust adhered to the surface of the roller when moving to the mounting seat 2) that may exist on the surface of the roller, by removing the water and dust as much as possible, the influence of water, dust and other factors on the welding repair work of the roller can be avoided, when the vertical electric oil cylinder 83 works regularly, the bottom of the hollow ring 141 will abut against the top of the mounting seat 2, and the outer sleeve 9 will be sleeved outside the roller, at the same time, the electric heater 11 will be inserted into the inside of the roller, and the bottom of the top plate 7 will abut against the end of the roller (the position marked with c in the figure, the bottom of the top plate 7 is integrally formed with an annular protrusion matching the diameter of the roller barrel, which is used for pressing and fixing the roller) Figure 1 ;

[0045] Before the control cabinet 4 controls the vertical electric oil cylinder 83 to work regularly for 5 seconds, the control cabinet 4 will control the reduction motor 101 to stop working (when the roller is installed into the positioning groove 5, the angle of the roller is accurate, Figure 1 the position of the roller needs to be aligned with the notch groove 65), after the reduction motor 101 stops working, the position of each detection electromagnetic push rod 121 on the side wall of the outer sleeve 9 is aligned with the position of each cutting tooth on the roller (the position marked with d in the figure, the position of the roller needs to be aligned with the notch groove 65) Figure 1, and the control cabinet 4 controls each first normally closed solenoid valve 144 and each second normally open solenoid valve 17 to stop working after the timing work of the vertical electric cylinder 83 is completed, and simultaneously controls the two first normally open solenoid valves 148 and the two second normally closed solenoid valves 149 to work regularly. At this time, the suction end of the suction pump 131 will extract the air inside the jacket 9 through the suction pipe 132, and discharge the air inside the jacket 9 through the outlet pipe 133. As the air inside the jacket 9 is discharged, a high vacuum state is formed inside the jacket 9 (an annular seal is provided at the bottom of the hollow ring 141 to ensure that the hollow ring 141 and the mounting seat 2 are sealed after they are against each other. Secondly, a sealing member is also provided at the rotating connection between the jacket 9 and the top plate 7). Seal to prevent air from entering from here), after the control cabinet 4 controls the first normally open solenoid valve 148 and the second normally closed solenoid valve 149 to work at the end of the timer, the control cabinet 4 controls the suction pump 131 to stop working at the same time, and at the same time controls the electric heater 11 to work, and the electric heater 11 can heat the air inside the cylinder of the drum (because the top plate 7 is against the drum, and one end of the drum mark a is against the bottom of the positioning groove 5, the air inside the cylinder of the drum will not be sucked out by the suction pump 131, so that the air can be heated by the electric heater 11, and the heat is transferred to the cylinder of the drum in conjunction with the heat radiation, and because the air outside the drum is sucked away, the influence of the heat transfer of the air outside the drum on the heat conduction detection can be minimized), at this time the inner wall of the cylinder is heated, and the heated heat will pass through the blades of the drum ( Figure 1 The position marked f in the middle is transmitted to each pick on the drum. After the control cabinet 4 controls the electric heater 11 to work for 10 seconds, the control cabinet 4 will control each detection electromagnetic push rod 121 to work. Each detection electromagnetic push rod 121 will push its own insulation tube 122 to be inserted into the outer side of the corresponding pick on the drum, and make the pick contact with the insulating heat-conducting piston 123;

[0046] When the control cabinet 4 controls the detection electromagnetic push rod 121 to work, the control cabinet 4 will control each indicating electromagnetic push rod 152 to pass the same current as the current in the connecting circuit of the thermal element 126 and the indicating electromagnetic push rod 152 in the same stage during the last repair of the roller (for example, after the last welding repair of the roller, the control cabinet 4 makes the electric heater 11 heat the roller according to the above steps, and at the same time, the control cabinet 4 controls the detection electromagnetic push rod 121 to work, and after the electric heater 11 works for 2 minutes, the control cabinet 4 connects the connecting circuit of each thermal element 126 and the measuring circuit of the control cabinet 4, the measuring circuit of the control cabinet 4 can detect the current in the connecting circuit of each thermal element 126, record and store the detected current, and then during the welding repair of the roller this time, the control cabinet 4 controls each indicating electromagnetic push rod 152 to pass the same current as the current in the connecting circuit of each thermal element 126 recorded and stored by the control cabinet 4 last time), at this time, the indicating electromagnetic push rod 152 will push the same side of the insulating installation piston 155 up through the same side of the conductive rod 154, because the current passed into the indicating electromagnetic push rod 152 this time is the same as the current passed into the connecting circuit of the thermal element 126 in the same stage after the last welding repair, so each insulating installation piston 155 will move to the same height as the insulating installation piston 155 corresponding to each thermal element 126 in the same stage after the last welding repair, after the indicating electromagnetic push rod 152 works for 5 seconds, the control cabinet 4 controls the indicating electromagnetic push rod 152 to stop working, and during the welding repair of the roller this time, after the control cabinet 4 controls the electric heater 11 to work for 2 minutes, the control cabinet 4 will control each indicating electromagnetic push rod 152 to connect with each thermal element 126, if the roller picks, blades and other parts are excessively worn, cracked or deformed, the wear will reduce the contact area of the picks and the same side of the insulating heat-conducting piston 123, so that less heat can be conducted to the position of the thermal element 126 in the same time (i.e. 2 minutes), the air in the crack will delay the conduction of heat, so it will also cause less heat to be conducted to the thermal element 126 in the same time, the deformation will cause the picks to be out of alignment with the heat insulation cylinder 122, so that the picks cannot be in contact with the insulating heat-conducting piston 123, affecting the heat conduction to the insulating heat-conducting piston 123, therefore, the temperature of the thermal element 126 at the position with defects will be lower than the temperature of the thermal element 126 after the last welding repair, and the decrease of the temperature of the thermal element 126 will cause the resistance of the thermal element 126 to increase (the resistance of the thermal element 126 decreases with the increase of the temperature in the range of 10℃ to 200℃), so after the control cabinet 4 connects the connecting circuit of the thermal element 126 and the corresponding indicating electromagnetic push rod 152, the current passed into the indicating electromagnetic push rod 152 becomes smaller, so the conductive rod 154 cannot move to the height of the conductive rod 154 corresponding to the thermal element 126 last time,That is, in this welding maintenance of the drum, the conductive rod 154 corresponding to the defective position cannot contact the conductive sleeve 156, while the conductive rod 154 corresponding to the position not requiring welding maintenance can contact the conductive sleeve 156 on the same side after moving upward.

[0047] After the control cabinet 4 controls the electric heater 11 to work for 2 minutes, the control cabinet 4 immediately controls the electric heater 11 to stop working and controls the suction pump 131 to work again. At the same time, the control cabinet 4 connects the connection circuit of each second normally open electromagnetic valve 17 and the corresponding conductive rod 154 and conductive sleeve 156. For the position of the drum with defects, since the conductive rod 154 and the conductive sleeve 156 are not in contact, the connection circuit of the corresponding second normally open electromagnetic valve 17 and the conductive rod 154 and the conductive sleeve 156 remains disconnected. At this time, the valve plate of the second normally open electromagnetic valve 17 remains open, while for the position without defects, since the conductive rod 154 and the conductive sleeve 156 are in contact, the corresponding second normally open electromagnetic valve 17 is normally powered. At this time, the valve plate of the second normally open electromagnetic valve 17 remains closed, so the air delivered by the suction pump 131 into the hollow circular ring 141 will enter the inside of the circular sleeve 157 corresponding to each defective position of the drum, thereby pushing each horizontal push piston 158 to move the marker rod 159 outward of the hollow circular ring 141. After the suction pump 131 works for 10 seconds, the control cabinet 4 controls the suction pump 131 to stop working and controls the connection circuit of each second normally open electromagnetic valve 17 and the corresponding conductive rod 154 and conductive sleeve 156 to be disconnected, and at the same time controls each first normally closed electromagnetic valve 144 to work for 3 seconds. (Excess air in the hollow circular ring 141 can be discharged through the air vent hole 143 and the conical jet pipe 145 to avoid excess air from pushing the horizontal push piston 158 in the circular sleeve 157 corresponding to the position of the drum without defects.) Since only the marker rod 159 corresponding to each defective position of the drum is pushed out, the worker can find the defects on the corresponding position of the drum by the position of the extended marker rod 159. Not only can the position of the drum with defects be accurately indicated, but also the indication of the defective position can be continuously maintained during the welding repair process to prevent the worker from missing the defective position.

[0048] After the control cabinet 4 controls the connection circuit of each second normally open electromagnetic valve 17 and the corresponding conductive rod 154 and conductive sleeve 156 to be disconnected, the control cabinet 4 controls each detection electromagnetic push rod 121 to be powered off and controls the vertical electric oil cylinder 83 to work for a certain time after 2 seconds of delay, so that the top plate 7 drives the outer sleeve 9 to move back to the reset position. Then the worker uses the welding machine 3 and according to the position indicated by each marker rod 159, sequentially welds each defective position of the drum.

[0049] After the welding repair is completed, a record button on the control cabinet 4 is pressed, the control cabinet 4 controls the entire device to execute the above steps until, after the electric heater 11 works for 2 minutes, the control cabinet 4 connects the connection loop of each thermistor 126 and the measuring circuit of the control cabinet 4, the measuring circuit of the control cabinet 4 can detect the current in the connection loop of each thermistor 126, record and store the detected current, so that the current can be compared next time the roller is welded and repaired, and thus the welding and repairing work of the roller is completed, after the work is completed, the roller is detached from the mounting seat 2, and then each marking rod 159 and each insulating mounting piston 155 is pushed back to the reset position, so as to facilitate the next maintenance use.

[0050] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A tool for overhauling a coal mining machine component, comprising an electric guide rail (1) and a mounting seat (2) arranged above the electric guide rail (1), the electric guide rail (1) being in transmission connection with the mounting seat (2), a side wall of the electric guide rail (1) being fixedly provided with a welding machine (3) and a control cabinet (4), the welding machine (3) and the electric guide rail (1) both being in electrical connection with the control cabinet (4), characterized in that, Also includes: Positioning groove (5), open in the top center of the mounting seat (2), the groove bottom of the positioning groove (5) is installed with clamping fixed mechanism (6); Top plate (7), arranged above the mounting seat (2), the electric guide rail (1) is installed with support lifting mechanism (8), and is fixedly connected with the top plate (7) through the support lifting mechanism (8); Sleeve (9), arranged below the top plate (7), the top plate (7) is installed with rotary drive mechanism (10), and is connected with the sleeve (9) through the rotary drive mechanism (10); Electric heater (11), arranged inside the sleeve (9), coaxial with the positioning groove (5), the electric heater (11) is fixedly installed at the bottom of the top plate (7); A plurality of heat conduction detection units (12) are installed on the side wall of the sleeve (9); Vacuumizing unit (13), installed on the top of the top plate (7), and the suction end of the vacuumizing unit (13) is communicated with the inside of the sleeve (9), the bottom of the sleeve (9) is installed with cleaning mechanism (14) communicated with the outlet end of the vacuumizing unit (13); A plurality of indication units (15) are installed on the top of the cleaning mechanism (14), each of the heat conduction detection units (12) is electrically connected with the corresponding indication unit (15) through the control cabinet (4), and the support lifting mechanism (8), the rotary drive mechanism (10), the vacuumizing unit (13), the electric heater (11) and the cleaning mechanism (14) are electrically connected with the control cabinet (4); Each of the heat conduction detection units (12) comprises a detection electromagnetic push rod (121) fixedly inserted into the side wall of the sleeve (9), the telescopic end of the detection electromagnetic push rod (121) is fixedly installed with a heat insulation cylinder (122), and the inside of the heat insulation cylinder (122) is slidably provided with an insulating heat conducting piston (123), two springs (124) are fixedly arranged between the insulating heat conducting piston (123) and the inner top of the heat insulation cylinder (122), an insulating cover (125) is fixedly installed on the top of the insulating heat conducting piston (123), a thermosensitive element (126) is fixedly installed in the inside of the insulating cover (125), one end of the thermosensitive element (126) is in contact with the end face of the insulating heat conducting piston (123), and the thermosensitive element (126) and the detection electromagnetic push rod (121) are electrically connected with the control cabinet (4); The vacuumizing unit (13) comprises a suction pump (131) installed on one side of the top of the top plate (7), the suction end of the suction pump (131) is fixedly installed with an air suction pipe (132), the air suction pipe (132) penetrates through the top plate (7) and is communicated with the inside of the sleeve (9), the outlet end of the suction pump (131) is fixedly installed with an air outlet pipe (133), and the suction pump (131) is electrically connected with the control cabinet (4); The cleaning mechanism (14) includes a hollow ring (141) fixedly installed at the bottom of the sleeve (9), an annular partition (142) is fixedly installed inside the hollow ring (141), a plurality of air holes (143) are formed in the side wall of the annular partition (142), and a first normally closed electromagnetic valve (144) is fixedly installed inside each air hole (143); a tapered air jet pipe (145) in communication with each air hole (143) is fixedly inserted into the inner wall of the hollow ring (141); a branch suction pipe (146) is fixedly inserted into the side wall of the air suction pipe (132); a branch flow pipe (147) is fixedly inserted into the pipe wall of the air outlet pipe (133) and is in communication with the inside of the hollow ring (141); the first normally open electromagnetic valve (148) is installed inside the branch suction pipe (146) and the branch flow pipe (147); the second normally closed electromagnetic valve (149) is installed inside the air suction pipe (132) and the air outlet pipe (133); one of the second normally closed electromagnetic valves (149) is arranged at the air inlet end of the air suction pipe (132), and the other second normally closed electromagnetic valve (149) is arranged at the air outlet end of the air outlet pipe (133); and each of the first normally closed electromagnetic valve (144), the two first normally open electromagnetic valves (148) and the two second normally closed electromagnetic valves (149) is electrically connected with the control cabinet (4).

2. A tool for servicing a component of a coal mining machine according to claim 1, characterised in that, The clamping and fixing mechanism (6) includes a strip-shaped groove (61) formed in the bottom of the positioning groove (5), two sliding blocks (62) are slidably arranged in the strip-shaped groove (61), transverse electric oil cylinders (63) are fixedly inserted into the opposite groove walls of the strip-shaped groove (61), and the telescopic ends of the two transverse electric oil cylinders (63) are fixedly connected with the side walls of the same side sliding blocks (62); abutting columns (64) are fixedly installed on the top of each of the two sliding blocks (62); and the two transverse electric oil cylinders (63) are electrically connected with the control cabinet (4).

3. A tool for servicing a component of a coal mining machine according to claim 1, wherein, The supporting and lifting mechanism (8) includes a supporting seat (82) arranged above the top plate (7), a plurality of supporting rods (81) are fixedly arranged between the end surface of the supporting seat (82) and the end surface of the electric guide rail (1), a vertical electric oil cylinder (83) is fixedly inserted into the end surface of the supporting seat (82), and the telescopic end of the vertical electric oil cylinder (83) is fixedly connected with the top plate (7); and the vertical electric oil cylinder (83) is electrically connected with the control cabinet (4).

4. A tooling apparatus for servicing a component of a coal mining machine according to claim 1, characterised in that, The rotary driving mechanism (10) includes a reduction motor (101) fixedly installed at the top of the top plate (7), the output shaft of the reduction motor (101) is rotatably connected with the end surface of the top plate (7), a driving gear (102) is installed on the output shaft of the reduction motor (101), the driving gear (102) is in meshing transmission with the outer side wall upper end of the sleeve (9), and the reduction motor (101) is electrically connected with the control cabinet (4).

5. A tool for servicing a component of a coal mining machine according to claim 1, wherein, Each of the indication units (15) comprises a magnetic isolation cylinder (151) fixedly installed on the top of the hollow ring (141), the inside of the magnetic isolation cylinder (151) is fixedly installed with an indication electromagnetic push rod (152), the telescopic end of the indication electromagnetic push rod (152) is fixedly installed with an insulating block (153), the top of the insulating block (153) is fixedly installed with a conductive rod (154), the inside of the magnetic isolation cylinder (151) is slidably provided with an insulating installation piston (155) above the conductive rod (154), the bottom of the insulating installation piston (155) is fixedly installed with a conductive sleeve (156) matched with the conductive rod (154), the inner wall of the hollow ring (141) away from the annular partition (142) is fixedly installed with a circular sleeve (157), the inside of the circular sleeve (157) is slidably provided with a horizontal push piston (158), the side wall of the horizontal push piston (158) away from the annular partition (142) is fixedly installed with a marker rod (159), the side wall of the hollow ring (141) is provided with a push-out hole (16) matched with the marker rod (159), the inside of the circular sleeve (157) is installed with a second normally open electromagnetic valve (17) away from the marker rod (159), the conductive rod (154) and the conductive sleeve (156) are electrically connected with the second normally open electromagnetic valve (17) through the control cabinet (4), and the indication electromagnetic push rod (152) is electrically connected with the control cabinet (4).

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