Coal mining machine roller maintenance overturning platform

Abstract

The invention belongs to the technical field of coal mine machinery maintenance equipment, and particularly relates to a coal mining machine roller maintenance turnover platform which comprises a base, a square hollow stand column is fixedly connected to the upper surface of the base, and moving through holes are formed in the outer walls of the two sides of the square hollow stand column. The maintenance overturning platform has the functions of maintenance height adjustment and air purification, the coal mining machine roller has the automatic fastening function in the overturning process, the position of the roller can be matched with the height of maintenance personnel through maintenance height adjustment, the maintenance personnel can conveniently maintain the roller, and the maintenance efficiency is improved. Smoke drifting during welding maintenance can be avoided through air purification, the environmental protection property of the platform is improved, the working comfort of maintenance personnel can be improved, the maintenance quality of the roller of the coal mining machine is guaranteed, in addition, the labor intensity of the maintenance personnel is reduced through automatic fastening of the roller, and the maintenance efficiency is improved. Meanwhile, the condition that the roller cannot be maintained due to local shielding all the time after being overturned does not exist, and the comprehensiveness and efficiency of roller maintenance are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mine machinery maintenance equipment, and in particular relates to a coal mining machine drum maintenance turning platform. Background Art

[0002] During the use of the coal mining machine drum, the cutting teeth are easily damaged due to direct contact with coal and rock, and are subjected to huge friction and impact forces. The drum body may be broken and damaged due to uneven force or encountering hard foreign objects. After these damages occur, they can be repaired by replacing the cutting teeth, welding and repairing the drum body. The reason for maintenance is, on the one hand, to restore the performance of the coal mining machine and ensure efficient coal mining operations, and on the other hand, to reduce costs and avoid the high cost of replacing new drums. At the same time, timely maintenance can reduce safety hazards, prevent accidents caused by drum failures, and ensure the safety of coal mine production and the lives of workers.

[0003] At present, in the process of coal mining machine drum maintenance, in order to facilitate operation and improve maintenance efficiency, coal mining machine drum turning equipment is used. For example, the patent authorization announcement number CN216966821U discloses a coal mining machine drum maintenance turning platform. However, when the coal mining machine drum is repaired on the maintenance turning platform, it is still necessary to manually tighten the coal mining machine drum in a time-consuming and laborious manner, which not only increases the labor workload of the coal mining machine drum maintenance operation and affects the convenience and efficiency of maintenance, but also causes the bottom of the coal mining machine drum to always contact with the placement platform, and cannot be effectively turned over, so that the bottom of the coal mining machine drum cannot be exposed for maintenance, thereby affecting the comprehensiveness of maintenance and the reliability of the use of the turning platform;

[0004] In addition, when the existing coal mining machine drum is undergoing welding maintenance on the maintenance turning platform, the smoke generated often floats everywhere, which greatly affects the performance of the maintenance turning platform in the coal mining machine drum maintenance work in terms of environmental protection and reduces its environmental performance. From the perspective of maintenance personnel, once these drifting welding fumes are inhaled, it is easy to cause physical discomfort, and this discomfort will cause the maintenance personnel to reduce the accuracy when repairing the coal mining machine drum, which in turn has an adverse effect on the maintenance quality of the coal mining machine drum.

[0005] Therefore, a coal mining machine drum maintenance flipping platform is proposed to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a coal mining machine drum maintenance turning platform in view of the above problems.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a coal mining machine drum maintenance and turning platform, comprising a base, the upper surface of the base is fixedly connected with a square hollow column, the outer walls on both sides of the square hollow column are provided with movable through holes, and the hole walls of the two movable through holes are slidably connected with a hollow box, the outer wall of the hollow box is fixedly connected with a screw barrel sleeve, the inner wall of the screw barrel sleeve is threadedly connected with a screw, the two ends of the screw are respectively connected to the two ends of the square hollow column through rolling bearings, the top end of the screw passes through the upper surface of the square hollow column and is fixedly connected with a driven gear, and the top outer wall of the square hollow column is fixedly connected with a driving component and an air purification mechanism;

[0008] A circular hole is opened at the side end of the hollow box, and a load-bearing bearing is fixedly connected to the hole wall of the circular hole, a rotating column is fixedly connected to the inner wall of the inner ring of the load-bearing bearing, a first self-locking motor is fixedly connected to the outer wall of the hollow box, an output end of the first self-locking motor passes through the inner wall of the hollow box and is fixedly connected to the inner end of the rotating column, a U-shaped welding maintenance flip platform is fixedly sleeved on the outer end of the rotating column, and a limiting mechanism is connected to the inner wall of the U-shaped welding maintenance flip platform;

[0009] The side end of the U-shaped welding maintenance turning platform is fixedly connected with an arc rod, the side end of the arc rod is provided with a through hole, and the hole wall of the through hole is connected with a balancing mechanism;

[0010] The upper surface of the base is fixedly connected with a mounting plate, the outer surface of the mounting plate is fixedly connected with a PLC controller, and the input end of the PLC controller is electrically connected with a control switch.

[0011] In the above-mentioned coal mining machine drum maintenance and turning platform, the driving assembly includes a second self-locking motor fixedly connected to the outer wall of the top end of the square hollow column, the output end of the second self-locking motor is fixedly connected to a driving gear meshing with the driven gear, and the upper surface of the square hollow column is fixedly connected to an electric hydraulic rod.

[0012] In the above-mentioned coal mining machine drum maintenance and turning platform, the limiting mechanism includes a fixed cover and a movable cover, the outer wall of the fixed cover is fixedly connected to the inner wall of one side of the U-shaped welding maintenance and turning platform, the outer wall of the movable cover is in movably contact with the inner wall of the other side of the U-shaped welding maintenance and turning platform, the outer wall of the movable cover is fixedly connected to a multi-stage electric hydraulic push rod, the outer wall of the U-shaped welding maintenance and turning platform is provided with a mounting hole that matches the outer surface of the multi-stage electric hydraulic push rod, the fixed cover and the movable cover are provided with circular holes on the opposite sides, and the hole walls of the circular holes are connected to support covers through rotating bearings, the inner walls of the two support covers are respectively fixedly connected to a third self-locking motor and a fourth self-locking motor, the bottom end of the third self-locking motor is fixedly connected to the inner wall of the U-shaped welding maintenance and turning platform, and the fixed end of the fourth self-locking motor is fixedly connected to the inner wall of the movable cover.

[0013] In the above-mentioned coal mining machine drum maintenance and turning platform, the output ends of the third self-locking motor and the fourth self-locking motor are fixedly connected to rectangular blocks, the inner wall of the support cover is provided with a connecting groove matching the rectangular block, and a plurality of rubber anti-sliding blocks are fixedly embedded on the opposite sides of the two support covers, and a plurality of universal ball bearings are fixedly connected to the end of the support cover away from the rubber anti-sliding block.

[0014] In the above-mentioned coal mining machine drum maintenance and turning platform, the air purification mechanism includes a hollow plate fixedly connected to the outer wall of the top end of the square hollow column, the lower surface of the hollow plate is provided with a plurality of air inlet holes, the upper surface of the hollow plate is fixedly connected to a purification box, the inner wall of the purification box is fixedly connected to an air pump, the air inlet end of the air pump passes through the bottom end of the purification box and the top end of the hollow plate, and is connected to the internal cavity of the hollow plate, the inner wall of the purification box is fixedly connected to two mesh partitions, the outer walls of the two mesh partitions are jointly and movably connected to an activated carbon composite filter element, the top of the purification box is provided with a rectangular hole, and the hole wall of the rectangular hole is connected to a sealing cover that matches the top end of the activated carbon composite filter element, the top of the sealing cover is fixedly connected to the top end of the purification box by bolts, the side end of the purification box is fixedly connected to an exhaust bellows, and the inner wall of the exhaust bellows is fixedly connected to two directional iron wires.

[0015] In the above-mentioned coal mining machine drum maintenance and turning platform, the balancing mechanism includes a mounting bearing fixedly connected to the inner wall of the through hole on the arc rod, the inner wall of the mounting bearing is fixedly connected to a fixing tube, the two ends of the fixing tube are respectively fixedly connected to a conductive slip ring and a connecting ring, the outer wall of the connecting ring is fixedly connected to a steel wire rope, the moving end of the electric hydraulic rod is fixedly connected to a hollow moving block, the inner wall of the hollow moving block is slidably connected to a T-shaped block, the side end of the transverse rod of the T-shaped block passes through the outer wall of the hollow moving block and is fixedly connected to the top of the steel wire rope, the side end of the hollow moving block is provided with a connecting hole and a rectangular hole matching the outer wall of the transverse rod of the T-shaped block, and the hole wall of the connecting hole is fixedly connected to a push switch.

[0016] In the above-mentioned coal mining machine drum maintenance and turning platform, the outer wall of the wire rope is movably connected with a fixed pulley, the bottom end of the fixed pulley is fixedly connected to the upper surface of the hollow plate, and the outer wall of the transverse rod of the T-shaped block is movably sleeved with a return spring.

[0017] In the above-mentioned coal mining machine drum maintenance and turning platform, a plurality of right-angle reinforcement blocks are fixedly connected to the upper surface of the base, and the side walls of the right-angle reinforcement blocks are fixedly connected to the outer walls of the square hollow columns.

[0018] Compared with the existing technology, the advantages of a coal mining machine drum maintenance flip platform are:

[0019] 1. Through the screw, drive assembly and U-shaped welding maintenance flip platform, when the coal mining machine drum is welded and repaired on the maintenance flip platform, the electric hydraulic rod pulls the wire rope and the arc rod to balance the forces at both ends of the U-shaped welding maintenance flip platform, avoiding long-term unilateral force deformation of the platform and improving the stability of the placement of the coal mining machine drum. At the same time, the drive assembly cooperates with the screw, screw barrel sleeve and hollow box to adjust the height of the coal mining machine drum on the U-shaped welding maintenance flip platform, so that the height of the coal mining machine drum matches the height of the maintenance personnel, thereby facilitating the maintenance work and improving the welding maintenance efficiency and the comfort of the maintenance personnel.

[0020] 2. Through the air purification mechanism, when the coal mining machine drum is welded and maintained on the maintenance flip platform, the air purification mechanism can absorb the smoke generated by the welding of the coal mining machine drum to avoid smoke pollution of the environment and discomfort to the maintenance personnel. In the high temperature environment in summer, clean air can be sprayed to the maintenance personnel to cool down, so that the maintenance personnel can work comfortably, improve the accuracy of welding maintenance and ensure the quality of maintenance.

[0021] 3. By setting up the first self-locking motor, U-shaped welding maintenance flipping platform and limiting mechanism, when the coal mining machine drum needs to be flipped over for maintenance, the coal mining machine drum is first clamped by the limiting mechanism, and then the first self-locking motor is started. The first self-locking motor rotates the U-shaped welding maintenance flipping platform 180 degrees through the rotating column, and drives the coal mining machine drum to flip. The limiting mechanism can automatically tighten the coal mining machine drum during the flipping process, without manual operation, saving time and effort. This mechanism enables the coal mining machine drum maintenance flipping platform to have the function of automatic tightening during the flipping process, and no manual assistance is required, which reduces the labor intensity of maintenance personnel. At the same time, after the coal mining machine drum is flipped, there is no situation where part of it is always blocked and cannot be repaired, which improves the comprehensiveness of coal mining machine drum maintenance, as well as the convenience and efficiency of coal mining machine drum maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a coal mining machine drum maintenance turning platform provided by the present invention;

[0023] Figure 2 It is a structural schematic diagram of an air purification mechanism in a coal mining machine drum maintenance turning platform provided by the present invention;

[0024] Figure 3 It is a partial structural schematic diagram of a limiting mechanism in a coal mining machine drum maintenance turning platform provided by the present invention;

[0025] Figure 4 It is a structural schematic diagram of a balancing mechanism in a coal mining machine drum maintenance turning platform provided by the present invention;

[0026] Figure 5 It is a structural schematic diagram of an exhaust bellows in a coal mining machine drum maintenance turning platform provided by the present invention;

[0027] Figure 6 It is a structural schematic diagram of a rubber anti-sliding block part in a coal mining machine drum maintenance and turning platform provided by the present invention;

[0028] Figure 7 The present invention is a schematic structural diagram of a U-shaped welded maintenance and turning platform in a coal mining machine drum maintenance and turning platform provided by the present invention.

[0029] In the figure: 1 base, 2 square hollow column, 3 moving through hole, 4 hollow box, 5 screw sleeve, 6 driving assembly, 61 second self-locking motor, 62 driving gear, 63 electric hydraulic rod, 7 air purification mechanism, 71 hollow plate, 72 air inlet, 73 purification box, 74 air pump, 75 mesh partition, 76 activated carbon composite filter element, 77 sealing cover, 78 exhaust bellows, 79 directional wire, 8 limit mechanism, 81 fixed cover, 82 movable cover, 83 multi-stage electric hydraulic push rod, 84 support cover, 85 third self-locking motor, 86 fourth self-locking Motor, 9 balancing mechanism, 91 mounting bearing, 92 fixing tube, 93 conductive slip ring, 94 connecting ring, 95 wire rope, 96 hollow moving block, 97 T-shaped block, 98 push switch, 10 screw, 11 driven gear, 12 load-bearing bearing, 13 rotating column, 14 first self-locking motor, 15 U-shaped welding maintenance turning platform, 16 arc rod, 17 mounting plate, 18 PLC controller, 19 control switch, 20 rectangular block, 21 rubber anti-sliding block, 22 universal ball, 23 fixed pulley, 24 reset spring, 25 right-angle reinforcement block. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] like Figure 1-Figure 7As shown, a coal mining machine drum maintenance and turning platform comprises a base 1, the upper surface of the base 1 is fixedly connected with a square hollow column 2, the outer walls of both sides of the square hollow column 2 are provided with movable through holes 3, and the hole walls of the two movable through holes 3 are slidably connected with a hollow box 4, the outer wall of the hollow box 4 is fixedly connected with a screw barrel sleeve 5, the inner wall of the screw barrel sleeve 5 is threadedly connected with a screw rod 10, the two ends of the screw rod 10 are respectively connected to the two ends of the square hollow column 2 through rolling bearings, the top of the screw rod 10 passes through the upper surface of the square hollow column 2 and is fixedly connected with a driven gear 11, the top outer wall of the square hollow column 2 is fixedly connected with a driving assembly 6 and an air purification mechanism 7, the driving assembly 6 comprises a second self-locking motor 61 fixedly connected to the top outer wall of the square hollow column 2, the output end of the second self-locking motor 61 is fixedly connected with a driving gear 62 meshing with the driven gear 11, and the upper surface of the square hollow column 2 is fixedly connected with an electric hydraulic rod 63.

[0032] The air purification mechanism 7 includes a hollow plate 71 fixedly connected to the outer wall of the top of the square hollow column 2, a plurality of air inlet holes 72 are provided on the lower surface of the hollow plate 71, a purification box 73 is fixedly connected to the upper surface of the hollow plate 71, an air pump 74 is fixedly connected to the inner wall of the purification box 73, an air inlet end of the air pump 74 passes through the bottom end of the purification box 73 and the top of the hollow plate 71, and is connected to the internal cavity of the hollow plate 71, two mesh partitions 75 are fixedly connected to the inner wall of the purification box 73, an activated carbon composite filter element 76 is movably connected to the outer walls of the two mesh partitions 75, and a rectangular filter element 76 is provided on the top of the purification box 73. shaped hole, and the hole wall of the rectangular hole is connected with a sealing cover 77 which matches with the top of the activated carbon composite filter element 76, the top of the sealing cover 77 is fixedly connected to the top of the purification box 73 by bolts, the side end of the purification box 73 is fixedly connected with an exhaust bellows 78, and the inner wall of the exhaust bellows 78 is fixedly connected with two directional iron wires 79. This mechanism enables the coal mining machine drum maintenance and turning platform to have the function of air purification, which avoids the smoke from drifting during welding maintenance, not only improves the environmental protection of the coal mining machine drum maintenance and turning platform, but also improves the working comfort of the maintenance personnel, thereby ensuring the quality of coal mining machine drum maintenance.

[0033] A circular hole is opened at the side end of the hollow box 4, and a load-bearing bearing 12 is fixedly connected to the hole wall of the circular hole, and a rotating column 13 is fixedly connected to the inner wall of the inner ring of the load-bearing bearing 12. A first self-locking motor 14 is fixedly connected to the outer wall of the hollow box 4. The output end of the first self-locking motor 14 passes through the inner wall of the hollow box 4 and is fixedly connected to the inner side end of the rotating column 13. A U-shaped welding maintenance flip platform 15 is fixedly sleeved on the outer end of the rotating column 13. The inner wall of the U-shaped welding maintenance flip platform 15 is connected to a limiting mechanism 8, and the limiting mechanism 8 includes a fixed cover The outer wall of the fixed cover 81 is fixedly connected to the inner wall of one side of the U-shaped welding maintenance flip platform 15, and the outer wall of the movable cover 82 is in movable contact with the inner wall of the other side of the U-shaped welding maintenance flip platform 15. The outer wall of the movable cover 82 is fixedly connected to the multi-stage electric hydraulic push rod 83, and the outer wall of the U-shaped welding maintenance flip platform 15 is provided with a mounting hole that matches the outer surface of the multi-stage electric hydraulic push rod 83. The fixed cover 81 and the movable cover 82 are both provided with a circular hole on the opposite side, and the hole wall of the circular hole is connected by a rotating bearing. There is a support cover 84, and the inner walls of the two support covers 84 are respectively fixedly connected with a third self-locking motor 85 and a fourth self-locking motor 86, the bottom end of the third self-locking motor 85 is fixedly connected to the inner wall of the U-shaped welding maintenance turning platform 15, and the fixed end of the fourth self-locking motor 86 is fixedly connected to the inner wall of the movable cover 82, and the output ends of the third self-locking motor 85 and the fourth self-locking motor 86 are both fixedly connected with a rectangular block 20, and the inner wall of the support cover 84 is provided with a connecting groove matched with the rectangular block 20, and the opposite sides of the two support covers 84 are fixedly embedded with a plurality of rubber anti-slip blocks 21, and the end of the support cover 84 away from the rubber anti-slip block 21 is fixedly connected with a plurality of universal balls 22, and the universal balls 22 can support the support cover 84 and facilitate the rotation of the support cover 84. This mechanism enables the coal mining machine drum maintenance turning platform to have the function of automatic tightening during the turning process, and no manual assistance is required, thereby reducing the labor intensity of maintenance personnel. At the same time, after the coal mining machine drum is turned over, there is no situation where the local area is always blocked and cannot be repaired, thereby improving the comprehensiveness of coal mining machine drum maintenance.

[0034] The side end of the U-shaped welding maintenance flip platform 15 is fixedly connected with an arc rod 16, and a through hole is opened at the side end of the arc rod 16, and a balancing mechanism 9 is connected to the hole wall of the through hole. The balancing mechanism 9 includes a mounting bearing 91 fixedly connected to the inner wall of the through hole on the arc rod 16, and the inner wall of the mounting bearing 91 is fixedly connected to a fixing tube 92, and the two ends of the fixing tube 92 are respectively fixedly connected with a conductive slip ring 93 and a connecting ring 94, and the conductive slip ring 93 is used for the circuit coordination in the rotating structure of the device to avoid the entanglement of the wires of the energized equipment in the rotating structure of the device, and ensure the reliability of the device in the energized circuit. The outer wall of the connecting ring 94 is fixedly connected with a wire rope 95, and the moving end of the electric hydraulic rod 63 is fixedly connected with a hollow moving block 96, and the inner wall of the hollow moving block 96 is slidably connected with a T-shaped block 97. The outer wall is movably connected with a fixed pulley 23, and the bottom end of the fixed pulley 23 is fixedly connected to the upper surface of the hollow plate 71. The outer wall of the transverse rod of the T-shaped block 97 is movably sleeved with a return spring 24. The elastic force of the return spring 24 can facilitate the T-shaped block 97 to reset in the hollow moving block 96. The side end of the transverse rod of the T-shaped block 97 passes through the outer wall of the hollow moving block 96 and is fixedly connected to the top of the wire rope 95. The side end of the hollow moving block 96 is provided with a connecting hole and a rectangular hole matching the outer wall of the transverse rod of the T-shaped block 97, and the hole wall of the connecting hole is fixedly connected with a press switch 98. By operating the switch 19, the moving end of the electric hydraulic rod 63 is controlled to retract, so that the wire rope 95 pulls the arc rod 16 again, ensuring that the U-shaped welding maintenance flip platform 15 is force balanced, which can improve the stability of the use of the U-shaped welding maintenance flip platform 15.

[0035] A mounting plate 17 is fixedly connected to the upper surface of the base 1, a PLC controller 18 is fixedly connected to the outer surface of the mounting plate 17, an input end of the PLC controller 18 is electrically connected to a control switch 19, a plurality of right-angle reinforcement blocks 25 are fixedly connected to the upper surface of the base 1, side walls of the right-angle reinforcement blocks 25 are fixedly connected to the outer walls of the square hollow columns 2, the right-angle reinforcement blocks 25 can improve the stability of the connection between the base 1 and the square hollow columns 2, the second self-locking motor 62, the multi-stage electric hydraulic push rod 83, the third self-locking motor 85, the fourth self-locking motor 86 and the first self-locking motor 14 are electrically connected to the PLC controller 18, the air pump 74 is electrically connected to an external power supply by pressing the switch 98, and the above-mentioned power-on equipment and electrical connections are prior art and will not be repeated here.

[0036] The operating principle of the present invention is described as follows: when the damaged shearer drum needs welding repair, first move the damaged shearer drum to the U-shaped welding repair flip platform 15, then place the shearer drum on the support cover 84 at the fixed cover 81. At this time, due to the heavy weight of the shearer drum, a slight deformation will be found on the side of the U-shaped welding repair flip platform 15 away from the rotating column 13. This deformation will pull the T-shaped block 97 to move through the wire rope 95 of the balancing mechanism 9. When the hollow moving block 96 moves, the T-shaped block 97 will not The reset spring 24 and the push switch 98 will be squeezed. When the push switch 98 is powered on, the air purification mechanism 7 will be started. At the same time, the powered push switch 98 also sends an electrical signal to the PLC controller 18. The PLC controller 18 controls the moving end of the electric hydraulic rod 63 to retract a certain distance. In the early stage of the retraction of the moving end of the electric hydraulic rod 63, the moving rod of the electric hydraulic rod 63 drives the hollow moving block 96 to move. The hollow moving block 96 pulls the wire rope 95 through the T-shaped block 97, and the tension of the wire rope 95 is used to pull the connecting ring 94 The tension on the connecting ring 94 acts on the fixed tube 92, and then the fixed tube 92 can pull the arc rod 16 upward, and the fixed wire rod 16 causes the side of the U-shaped welding maintenance flip platform 15 away from the rotating column 13 to also be pulled upward. The upward pulling force of the arc rod 16 balances the squeezing of the rotating column 13 by the gravity of the U-shaped welding maintenance flip platform 15 and the coal mining machine drum, and balances the forces on both sides of the U-shaped welding maintenance flip platform 15. At this time, the staff suspends the retraction of the electric hydraulic rod 63 by operating the switch 19, so that the wire rod 16 can be pulled upward. The rope 95 keeps the arc rod 16 pulled, further preventing the U-shaped welding maintenance flip platform 15 from being deformed and damaged by the gravity of the coal mining machine drum on one side due to being located at the rotating column 13 for a long time, and can improve the stability of the coal mining machine drum placed on the U-shaped welding maintenance flip platform 15. When the U-shaped welding maintenance flip platform 15 is not placed on the coal mining machine drum, the pressure exerted by the U-shaped welding maintenance flip platform 15 on the rotating column 13 is small, and the rotating column 13 can reliably support the U-shaped welding maintenance flip platform 15.

[0037] Next, during the process of welding and repairing the coal mining machine drum, if the height of the coal mining machine drum does not match the height of the maintenance personnel, causing inconvenience in maintenance, the maintenance personnel will start the second self-locking motor 61 by operating the switch 19 and the PLC controller 18. The second self-locking motor 61 rotates the screw 10 counterclockwise or clockwise through the driving gear 62 and the driven gear 11. Then, the rotating screw 10 can adjust the height of the screw barrel sleeve 5 and the hollow box 4. When the height of the hollow box 4 is adjusted, the height of the U-shaped welding maintenance flip platform 15 can be driven by the rotating column 13 to adjust the height, so that the height of the coal mining machine drum on the U-shaped welding maintenance flip platform 15 matches the height of the maintenance personnel, thereby facilitating the maintenance personnel to repair the damaged During maintenance of the coal mining machine drum, after the height of the U-shaped welding maintenance flipping platform 15 is appropriate, the second self-locking motor 61 is controlled to stop rotating. Since the second self-locking motor 61 has the self-locking ability, the U-shaped welding maintenance flipping platform 15 with adjusted height will not change. At the same time, the moving end of the electric hydraulic rod 63 is controlled to retract by operating the switch 19, so that the wire rope 95 pulls the arc rod 16 again to ensure that the force of the U-shaped welding maintenance flipping platform 15 is balanced. This mechanism enables the coal mining machine drum maintenance flipping platform to have the function of adjusting the maintenance height, so that maintenance personnel can conveniently repair the coal mining machine drum, improve the efficiency of coal mining machine drum welding maintenance, and improve the working comfort of maintenance personnel.

[0038] During the welding and maintenance of the coal mining machine drum, the air pump 74 of the air purification mechanism 7 is powered on by pressing the switch 98, and the air pump 74 sucks the smoke generated by the welding and maintenance of the coal mining machine drum through the hollow plate 71 and the air inlet 72. The smoke is adsorbed and retained by the activated carbon composite filter element 76 in the purification box 73, and finally the clean air is discharged through the exhaust bellows 78. At this time, the smoke generated by the welding and maintenance of the coal mining machine drum can be prevented from dispersing and polluting the environment, and the maintenance personnel can be prevented from feeling uncomfortable by inhaling welding smoke for a long time. Moreover, in the high temperature environment in summer, the maintenance personnel control the exhaust direction of the exhaust bellows 78 through the directional iron wire 79. The directional iron wire 79 has the characteristic of arbitrary bending. By bending the directional iron wire 79, the exhaust direction of the exhaust bellows 78 can be stabilized, so that the clean air in the exhaust bellows 78 is sprayed toward the maintenance personnel, which is convenient for the maintenance personnel to cool down, and then the maintenance personnel can work comfortably in the high temperature environment in summer. After the maintenance personnel work comfortably, they can also improve the accuracy of the welding and maintenance of the coal mining machine drum and ensure the maintenance quality of the coal mining machine drum.

[0039] During the welding maintenance of the coal mining machine drum, the third self-locking motor 85 is controlled to rotate slowly by operating the switch 19 and the PLC controller 18. The third self-locking motor 85 causes the support cover 84 to rotate on the fixed cover 81, thereby adjusting the position of the coal mining machine drum. At this time, due to the heavy weight of the coal mining machine drum, the friction force at the contact point between the coal mining machine drum and the support cover 84 surface is large. At the same time, with the rubber anti-sliding block 21, it can prevent the coal mining machine drum from falling when it rotates slowly. Then, after the coal mining machine drum rotates into place, the third self-locking motor 85 is controlled to stop rotating, so that the maintenance personnel can fully repair the side walls and top surface of the coal mining machine drum. When it is necessary to repair the bottom of the coal mining machine drum, the multi-stage electric hydraulic push rod 83 is controlled to extend by operating the switch 19 and the PLC controller 18. The multi-stage electric hydraulic push rod 83 pushes the movable cover 82 close to the coal mining machine drum. Finally, the movable cover 82 pushes the support cover 84 to clamp the top of the coal mining machine drum. The two support covers 84 The shearer drum can be reliably clamped, and the first self-locking motor 14 is controlled to rotate 180 degrees at this time. The first self-locking motor 14 drives the U-shaped welding maintenance flipping platform 15 to rotate 180 degrees through the rotating column 13 to realize the flipping of the shearer drum. After flipping, the multi-stage electric hydraulic push rod 83 is controlled to shrink. After the multi-stage electric hydraulic push rod 83 shrinks, it drives the shearer drum to move down through the movable cover 82, so that the shearer drum is away from the fixed cover 81, and it is convenient for maintenance personnel to maintain the top of the shearer drum after flipping. The entire shearer drum flipping and maintenance process does not require manual tightening, and the shearer drum can be fully repaired after flipping. The mechanism enables the shearer drum maintenance flipping platform to have the function of automatic tightening during the flipping process, and no manual assistance is required, which reduces the labor intensity of maintenance personnel. At the same time, after the shearer drum is flipped, there is no situation where part of it is always blocked and cannot be repaired, which improves the comprehensiveness of the shearer drum maintenance, as well as the convenience and efficiency of the shearer drum maintenance.

[0040] 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 coal mining machine drum maintenance and turning platform, comprising a base (1), characterized in that: The upper surface of the base (1) is fixedly connected to a square hollow column (2), and the outer walls on both sides of the square hollow column (2) are provided with movable through holes (3), and the hole walls of the two movable through holes (3) are slidably connected to a hollow box (4), and the outer wall of the hollow box (4) is fixedly connected to a screw barrel sleeve (5), and the inner wall of the screw barrel sleeve (5) is threadedly connected to a screw rod (10), and the two ends of the screw rod (10) are respectively connected to the two ends of the square hollow column (2) through rolling bearings, and the top end of the screw rod (10) passes through the upper surface of the square hollow column (2) and is fixedly connected to a driven gear (11), and the top outer wall of the square hollow column (2) is fixedly connected to a driving component (6) and an air purification mechanism (7); A circular hole is opened at the side end of the hollow box (4), and a load-bearing bearing (12) is fixedly connected to the hole wall of the circular hole, and a rotating column (13) is fixedly connected to the inner wall of the inner ring of the load-bearing bearing (12), and a first self-locking motor (14) is fixedly connected to the outer wall of the hollow box (4), and the output end of the first self-locking motor (14) passes through the inner wall of the hollow box (4) and is fixedly connected to the inner side end of the rotating column (13), and a U-shaped welding maintenance flip platform (15) is fixedly sleeved on the outer end of the rotating column (13), and the inner wall of the U-shaped welding maintenance flip platform (15) is connected to a limiting mechanism (8); The side end of the U-shaped welding maintenance turning platform (15) is fixedly connected to an arc rod (16), the side end of the arc rod (16) is provided with a through hole, and the hole wall of the through hole is connected to a balancing mechanism (9); The upper surface of the base (1) is fixedly connected to a mounting plate (17), the outer surface of the mounting plate (17) is fixedly connected to a PLC controller (18), and the input end of the PLC controller (18) is electrically connected to a control switch (19).

2. A coal mining machine drum maintenance turning platform according to claim 1, characterized in that: The driving assembly (6) comprises a second self-locking motor (61) fixedly connected to the outer wall of the top end of the square hollow column (2); the output end of the second self-locking motor (61) is fixedly connected to a driving gear (62) meshing with a driven gear (11); and the upper surface of the square hollow column (2) is fixedly connected to an electric hydraulic rod (63).

3. A coal mining machine drum maintenance turning platform according to claim 1, characterized in that: The limiting mechanism (8) comprises a fixed cover (81) and a movable cover (82), the outer wall of the fixed cover (81) being fixedly connected to the inner wall of one side of the U-shaped welding maintenance flip platform (15), the outer wall of the movable cover (82) being in movable contact with the inner wall of the other side of the U-shaped welding maintenance flip platform (15), the outer wall of the movable cover (82) being fixedly connected to a multi-stage electric hydraulic push rod (83), the outer wall of the U-shaped welding maintenance flip platform (15) being provided with a surface matching the multi-stage electric hydraulic push rod (83) The fixed cover (81) and the movable cover (82) are provided with circular holes on opposite sides, and the hole wall of the circular hole is connected to a support cover (84) through a rotating bearing, and the inner walls of the two support covers (84) are respectively fixedly connected to a third self-locking motor (85) and a fourth self-locking motor (86), the bottom end of the third self-locking motor (85) is fixedly connected to the inner wall of the U-shaped welding maintenance flip platform (15), and the fixed end of the fourth self-locking motor (86) is fixedly connected to the inner wall of the movable cover (82).

4. A coal mining machine drum maintenance turning platform according to claim 3, characterized in that: The output ends of the third self-locking motor (85) and the fourth self-locking motor (86) are both fixedly connected to a rectangular block (20); the inner wall of the support cover (84) is provided with a connection groove that matches the rectangular block (20); a plurality of rubber anti-sliding blocks (21) are fixedly embedded on opposite sides of the two support covers (84); and a plurality of universal balls (22) are fixedly connected to one end of the support cover (84) away from the rubber anti-sliding blocks (21).

5. A coal mining machine drum maintenance turning platform according to claim 1, characterized in that: The air purification mechanism (7) comprises a hollow plate (71) fixedly connected to the outer wall of the top end of the square hollow column (2); a plurality of air inlet holes (72) are provided on the lower surface of the hollow plate (71); a purification box (73) is fixedly connected to the upper surface of the hollow plate (71); an air pump (74) is fixedly connected to the inner wall of the purification box (73); an air inlet end of the air pump (74) passes through the bottom end of the purification box (73) and the top end of the hollow plate (71) and is connected to the inner cavity of the hollow plate (71); and the inner wall of the purification box (73) is fixedly connected to Two mesh partitions (75), the outer walls of the two mesh partitions (75) are movably connected to an activated carbon composite filter element (76), the top of the purification box (73) is provided with a rectangular hole, and the hole wall of the rectangular hole is connected to a cover (77) that matches the top of the activated carbon composite filter element (76), the top of the cover (77) is fixedly connected to the top of the purification box (73) by bolts, the side end of the purification box (73) is fixedly connected to an exhaust bellows (78), and the inner wall of the exhaust bellows (78) is fixedly connected to two directional iron wires (79).

6. A coal mining machine drum maintenance and turning platform according to claim 2, characterized in that: The balancing mechanism (9) comprises a mounting bearing (91) fixedly connected to the inner wall of the through hole on the arc rod (16); the inner wall of the mounting bearing (91) is fixedly connected to a fixing tube (92); the two ends of the fixing tube (92) are respectively fixedly connected to a conductive slip ring (93) and a connecting ring (94); the outer wall of the connecting ring (94) is fixedly connected to a steel wire rope (95); the movable end of the electric hydraulic rod (63) is fixedly connected to a hollow moving block (96); the inner wall of the hollow moving block (96) is slidably connected to a T-shaped block (97); the side end of the transverse rod of the T-shaped block (97) passes through the outer wall of the hollow moving block (96) and is fixedly connected to the top end of the steel wire rope (95); the side end of the hollow moving block (96) is provided with a connecting hole and a rectangular hole matching the outer wall of the transverse rod of the T-shaped block (97); and the hole wall of the connecting hole is fixedly connected to a push switch (98).

7. A coal mining machine drum maintenance and turning platform according to claim 6, characterized in that: The outer wall of the steel wire rope (95) is movably connected to a fixed pulley (23), the bottom end of the fixed pulley (23) is fixedly connected to the upper surface of the hollow plate (71), and the outer wall of the transverse rod of the T-shaped block (97) is movably sleeved with a return spring (24).

8. A coal mining machine drum maintenance and turning platform according to claim 1, characterized in that: A plurality of right-angle reinforcement blocks (25) are fixedly connected to the upper surface of the base (1), and the side walls of the right-angle reinforcement blocks (25) are fixedly connected to the outer walls of the square hollow columns (2).

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