Welding and positioning device for cutting pick holder of roller of coal mining machine

Abstract

The invention belongs to the technical field of coal mining machine cutting pick holder welding equipment, and particularly relates to a coal mining machine roller cutting pick holder welding positioning device which comprises a supporting plate, the bottom end of the supporting plate is fixedly connected with a fixing frame, and the bottom end of the fixing frame is fixedly connected with a lifting mechanism. According to the welding and positioning device for the cutting pick holder of the coal cutter roller, the function of automatically and accurately positioning the welding angle is achieved when the cutting pick holder and the coal cutter roller are welded, and the welding and positioning device for the cutting pick holder of the coal cutter roller further has the height adjusting function, so that the convenience and efficiency of welding and mounting of the cutting pick holder and the coal cutter roller can be improved, and the labor intensity of welding personnel is reduced; in addition, the coal cutter roller cutting tooth seat welding positioning device further has the functions of continuously cooling a welding area and purifying welding smoke dust, welding angle positioning deformation of the cutting tooth sleeve can be effectively prevented through continuous cooling of the welding area, the welding quality can be improved, and the using reliability and the environmental protection performance of the device can be improved.

Description

Technical Field

[0001] The invention belongs to the technical field of coal mining machine pick seat welding equipment, and in particular relates to a coal mining machine drum pick seat welding positioning device. Background Art

[0002] The pick seat of a coal mining machine is an important component of the coal mining machine drum. It is a component used to install and fix the picks. It is usually block-shaped or has a special geometric shape. Its structure has holes or slots for installing the picks, which can ensure that the picks are firmly in the working position during the coal mining process. The pick seat is generally made of high-strength metal materials, such as alloy steel, to withstand the huge cutting force and impact force during coal mining. Its main function is to ensure that the picks can be accurately and firmly positioned to effectively carry out coal cutting work. In the process of welding the pick seat to the coal mining machine drum, a positioning device is required to position the pick seat according to the design size to ensure the accuracy of the pick seat welding. For example, the patent authorization announcement number is CN107042382B, which discloses a coal mining machine drum pick seat welding positioner.

[0003] At present, the welding process of the pick seat of the coal mining machine drum needs to measure the welding angle of the pick seat through a positioning device, and after the welding angle is positioned, it is limited by a fixture or manual, and finally welded by welding equipment. In addition, when the pick seat is welded at the bottom area, due to the limitation of the welding angle, it is necessary to use equipment to adjust the placement angle of the coal mining machine drum so that the staff can reliably weld the bottom area of ​​the pick seat, which makes the welding positioning process of the pick seat too cumbersome, not only affecting the convenience and efficiency of the welding and installation of the pick seat and the coal mining machine drum, but also increasing the labor intensity of the welders;

[0004] In addition, during the welding process, the pick seat is affected by the high welding temperature, and the temperature of the position of the pick seat near the weld will rise sharply, causing the range of the welding heat affected zone to expand. This local thermal expansion is very likely to cause excessive deformation of the weld and its surrounding areas, thereby interfering with the positioning effect of the pick seat, affecting the quality of the pick seat welding, and even affecting the reliability of the use of the coal mining machine drum pick seat.

[0005] Therefore, we propose a coal mining machine drum pick seat welding positioning device to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a welding positioning device for a pick seat of a coal mining machine drum in view of the above problems.

[0007] To achieve the above object, the present invention adopts the following technical solutions: a coal mining machine drum pick seat welding positioning device, comprising a support plate, the bottom end of the support plate is fixedly connected to a fixing frame, and the bottom end of the fixing frame is fixedly connected to a lifting mechanism;

[0008] A circular groove is formed on the upper surface of the support plate, and a first bearing is fixedly embedded in the groove wall of the circular groove, and a roller positioning mechanism is fixedly connected to the inner wall of the first bearing;

[0009] The outer wall of the support plate is fixedly connected with a driving mechanism for rotating the roller positioning mechanism;

[0010] The outer walls on both sides of the support plate are respectively fixedly connected with a mounting frame and a purification box, the inner wall of the mounting frame is fixedly connected with an industrial computer, the top of the mounting frame is fixedly connected with a touch screen control panel, the upper surface of the purification box is fixedly connected with a mechanical arm, and the operating end of the mechanical arm is fixedly connected with a pick seat positioning auxiliary mechanism;

[0011] The outer wall of the mechanical arm is fixedly connected to a cutting tooth seat welding area cooling mechanism;

[0012] A smoke and dust removal mechanism is arranged inside the purification box.

[0013] In the above-mentioned coal mining machine drum pick seat welding and positioning device, the lifting mechanism includes an electric hydraulic rod fixedly connected to the lower surface of the fixed frame, the fixed end of the electric hydraulic rod is fixedly sleeved with a support frame, the upper surface of the support frame is provided with a plurality of limiting through holes, and the hole walls of the limiting through holes are movably connected with a T-shaped guide rod, and the top end of the T-shaped guide rod is fixedly connected to the lower surface of the fixed frame.

[0014] In the above-mentioned coal mining machine drum pick seat welding positioning device, the drum positioning mechanism includes a liquid storage cylinder fixedly connected to the inner wall of the inner ring of the first bearing, the top of the liquid storage cylinder is fixedly connected to a hollow turntable, the top of the hollow turntable is fixedly connected to two connecting pipes, the tops of the two connecting pipes are fixedly connected to a storage cylinder, the outer wall of the storage cylinder is fixedly connected to the upper surface of the hollow turntable, the side wall of the storage cylinder is provided with a through hole, and the hole wall of the through hole is movably connected to a moving rod, the two side ends of the moving rod are respectively fixedly connected to a sealing rubber block and an arc clamping plate, the outer wall of the sealing rubber block is connected to the receiving The inner wall of the liquid storage cylinder is in sealing and movable contact, the outer wall of the arc-shaped clamping plate is fixedly connected with a rubber anti-slip sheet, the inner wall of the fixed frame is fixedly connected with an electric push rod, the top of the electric push rod passes through the inner wall of the liquid storage cylinder and is fixedly sleeved with a second bearing, the top of the second bearing is fixedly sleeved with a sealing rubber cover, the outer wall of the sealing rubber cover is in sealing and movable contact with the inner wall of the liquid storage cylinder, the moving end of the electric push rod is movably sleeved with a third bearing, the bottom end outer wall of the liquid storage cylinder is provided with a fixed through hole for installing the third bearing, and the interiors of the liquid storage cylinder, the hollow turntable and the two storage cylinders are commonly filled with a hydraulic oil layer.

[0015] In the above-mentioned coal mining machine drum pick seat welding and positioning device, a plurality of universal ball bearings are fixedly connected to the outer wall of the bottom end of the hollow turntable, the outer wall of the universal ball bearings is rollingly connected to the groove wall of the circular groove, and the upper surface of the hollow turntable and the upper surface of the support plate are on the same horizontal plane.

[0016] In the above-mentioned coal mining machine drum pick seat welding and positioning device, the driving mechanism includes a U-shaped frame fixedly connected to the lower surface of the support plate, the inner wall of the U-shaped frame is fixedly connected to a driving motor, the output end of the driving motor passes through the lower surface of the U-shaped frame and is fixedly connected to a gear, and the outer wall of the liquid storage cylinder is fixedly sleeved with an external gear ring that meshes with the gears.

[0017] In the above-mentioned coal mining machine drum pick seat welding positioning device, the pick seat positioning auxiliary mechanism includes a hollow cylinder fixedly connected to the operating end of the mechanical arm, the outer wall of the bottom end of the hollow cylinder is fixedly sleeved with a rubber retaining ring, the outer wall of the rubber retaining ring is fixedly sleeved with an expansion sleeve, the cylinder wall of the hollow cylinder located on the inner side of the expansion sleeve is provided with a vent, the outer wall of the hollow cylinder is fixedly connected with a positioning plate, and the outer wall of the hollow cylinder is fixedly connected with a three-way reversing solenoid valve.

[0018] In the above-mentioned welding and positioning device for the pick seat of a coal mining machine drum, the smoke and dust removal mechanism includes an activated carbon filter plate fixedly connected to the inner wall of a purification box, a composite filter plate is fixedly connected to the lower surface of the activated carbon filter plate, a hollow annular cavity is opened inside the support plate, a plurality of air inlets are opened on the top of the hollow annular cavity, an L-shaped conduit is fixedly connected to the cavity wall of the hollow annular cavity, an air outlet end of the L-shaped conduit passes through the inner wall of the purification box, the activated carbon filter plate and the lower surface of the composite filter plate, a threaded hole is opened on the outer wall of the bottom end of the purification box, and a sealing plug is threadedly connected to the hole wall of the threaded hole, an L-shaped bracket is fixedly connected to the outer wall of the purification box, an air pump is fixedly embedded in the outer wall of the L-shaped bracket, and the air inlet end of the air pump passes through the inner wall of the top of the purification box.

[0019] In the above-mentioned coal mining machine drum pick seat welding positioning device, the pick seat welding area cooling mechanism includes a plurality of guide rings fixedly connected to the outer wall of the mechanical arm, the inner walls of the plurality of guide rings are commonly connected with a hose, the air outlet end of the hose is fixedly connected to the air inlet end of the three-way reversing solenoid valve, the outer air outlet end of the three-way reversing solenoid valve is fixedly connected with a Y-shaped rubber tube, the inner wall of the Y-shaped rubber tube is fixedly connected with a plurality of positioning iron wires, the bottom end of the hose is fixedly connected with a cooling box, the side wall of the cooling box is fixedly embedded with a plurality of semiconductor refrigeration plates, the cooling sides of the plurality of semiconductor refrigeration plates are commonly fixedly connected with a metal heat-conducting frame, the heat dissipation sides of the plurality of semiconductor refrigeration plates are commonly fixedly connected with a heat sink, and the bottom end of the cooling box is fixedly connected with the air outlet end of the vacuum pump.

[0020] Compared with the existing technology, the advantages of a coal mining machine drum pick seat welding positioning device are:

[0021] 1. Through the touch-screen control panel, industrial computer, drive mechanism and mechanical arm, when the coal mining machine drum needs to weld a pick seat, firstly, the multiple pick seat welding positions on the coal mining machine drum are labeled in sequence through the touch-screen control panel, industrial computer and the programming software pre-installed in the industrial computer, and multiple label icons are arranged in sequence on the screen of the touch-screen control panel. At the same time, according to the requirements and specifications of the design drawings, a control program for the control of the mechanical arm is written for each label separately. Through these control programs, the operation of the mechanical arm can be automatically controlled. When a pick seat welding position on the coal mining machine drum needs to be positioned and welded with a pick seat of a corresponding angle, the staff first touches the label icon corresponding to the welding position of the pick seat on the coal mining machine drum on the touch-screen control panel, and then the industrial computer automatically runs the control program of the mechanical arm in the label, and The pick seat at the operating end of the robotic arm is adjusted to a welding angle that meets the design standards, and finally the adjusted pick seat is moved to the welding position of the coal mining machine drum, thereby completing the purpose of automatic and precise positioning of the pick seat. At the same time, the coal mining machine drum is positioned by the drum positioning mechanism. When the pick seat is welded, the hollow turntable is controlled by the driving mechanism to rotate and adjust the posture of the coal mining machine drum, so that the welding position of the pick seat of the coal mining machine drum is close to the robotic arm. This can avoid the situation where the welding position of the pick seat of the coal mining machine drum is too far away from the robotic arm, resulting in the robotic arm not accurately positioning the welding angle of the pick seat to be welded. This mechanism enables the pick seat to be welded to the coal mining machine drum with the function of automatic and precise positioning of the welding angle, which not only improves the convenience and efficiency of the welding and installation of the pick seat and the coal mining machine drum, but also reduces the labor intensity of welders.

[0022] 2. Through the provided lifting mechanism, when the pick seat to be welded is welded on the coal mining machine drum, especially when the lower part of the pick seat is welded and fixed, the staff controls the movement of the electric hydraulic rod through the touch screen control panel and the industrial computer, and the electric hydraulic rod pushes the fixed frame to rise, and the fixed frame pushes the support plate to rise in height, and the support plate drives the coal mining machine drum to rise in height, thereby exposing the bottom of the pick seat to be welded on the coal mining machine drum to the staff, so that it is convenient for the staff to perform welding operations on the bottom area of ​​the pick seat through welding equipment, and there is no need to flip the coal mining machine drum, which saves time and effort. The mechanism enables the coal mining machine drum pick seat welding positioning device to have the function of height adjustment, which is convenient for the bottom of the pick seat to be exposed to the staff, and the bottom area of ​​the pick seat can be conveniently welded without flipping the coal mining machine drum, which not only improves the convenience and efficiency of welding and installation of the pick seat and the coal mining machine drum, but also reduces the labor intensity of welders.

[0023] 3. Through the setting of the cooling mechanism and smoke removal mechanism in the welding area of ​​the pick seat, during the welding process of the pick seat, the cooling mechanism in the welding area of ​​the pick seat cools down the air delivered by the vacuum pump, and the cooled air is then delivered to the top and bottom of the pick seat welding through the Y-shaped rubber tube, and the two air outlet ends of the Y-shaped rubber tube are used to spray cold air on the upper and lower sides of the welding position of the pick seat to be welded to cool down, and effectively improve the welding quality of the pick seat, and during the suction process of the vacuum pump, the smoke generated by welding is sucked through the L-shaped duct, hollow annular cavity and air inlet, and after the smoke is delivered to the purification box, it is filtered and purified by the composite filter element plate and the activated carbon filter element plate, and finally the clean air is delivered to the cooling box to ensure the environmental protection effect of the device. This mechanism enables the coal mining machine drum pick seat welding positioning device to have the function of continuous cooling of the welding area and purification of welding smoke, and the continuous cooling of the welding area can not only effectively prevent the pick sleeve welding angle positioning deformation, but also improve the welding quality, as well as the reliability and environmental protection performance of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a structural schematic diagram of a coal mining machine drum pick seat welding positioning device provided by the present invention;

[0025] Figure 2 It is a structural schematic diagram of a drum positioning mechanism in a coal mining machine drum pick seat welding positioning device provided by the present invention;

[0026] Figure 3 It is a partially enlarged structural schematic diagram of a coal mining machine drum pick seat welding positioning device provided by the present invention;

[0027] Figure 4 It is a structural schematic diagram of the operating end portion of a mechanical arm in a coal mining machine drum pick seat welding positioning device provided by the present invention;

[0028] Figure 5 It is a structural schematic diagram of the arc-shaped clamping plate part of a coal mining machine drum pick seat welding positioning device provided by the present invention;

[0029] Figure 6 It is a structural schematic diagram of a pick seat positioning auxiliary mechanism in a pick seat welding positioning device for a coal mining machine drum provided by the present invention;

[0030] Figure 7 It is a schematic structural diagram of a cross-section of a cooling box in a welding and positioning device for a pick seat of a coal mining machine drum provided by the present invention;

[0031] Figure 8 The present invention is a schematic structural diagram of a smoke and dust removal mechanism in a welding and positioning device for a pick seat of a coal mining machine drum.

[0032] In the figure: 1 support plate, 2 fixed frame, 3 lifting mechanism, 31 electric hydraulic rod, 32 support frame, 33 T-shaped guide rod, 4 first bearing, 5 roller positioning mechanism, 51 liquid storage cylinder, 52 hollow turntable, 53 connecting pipe, 54 storage cylinder, 55 moving rod, 56 sealing rubber block, 57 arc clamping plate, 58 rubber anti-slip sheet, 59 electric push rod, 510 second bearing, 511 sealing rubber cover, 512 third bearing, 513 hydraulic oil layer, 6 driving mechanism, 61 U-shaped frame, 62 driving motor, 63 gear, 64 outer gear ring, 7 pick seat positioning auxiliary mechanism, 71 hollow cylinder, 72 rubber retaining ring , 73 expansion sleeve, 74 vent, 75 positioning plate, 76 three-way reversing solenoid valve, 8 cooling mechanism in welding area of ​​pick seat, 81 guide ring, 82 hose, 83 Y-shaped rubber tube, 84 positioning wire, 85 cooling box, 86 semiconductor refrigeration plate, 87 metal heat conducting frame, 88 heat sink, 9 smoke removal mechanism, 91 activated carbon filter element plate, 92 composite filter element plate, 93 hollow annular cavity, 94 air inlet, 95 L-shaped conduit, 96 sealing plug, 97 L-shaped bracket, 98 vacuum pump, 10 mounting frame, 11 purification box, 12 industrial computer, 13 touch screen control panel, 14 mechanical arm, 15 universal ball bearing. DETAILED DESCRIPTION

[0033] 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.

[0034] like Figure 1-Figure 8 As shown, a coal mining machine drum pick seat welding positioning device includes a support plate 1, the bottom end of the support plate 1 is fixedly connected to a fixed frame 2, the bottom end of the fixed frame 2 is fixedly connected to a lifting mechanism 3, the lifting mechanism 3 includes an electric hydraulic rod 31 fixedly connected to the lower surface of the fixed frame 2, the fixed end of the electric hydraulic rod 31 is fixedly sleeved with a support frame 32, the upper surface of the support frame 32 is provided with a plurality of limiting through holes, and the hole walls of the limiting through holes are movably connected with T-shaped guide rods 33, and the top end of the T-shaped guide rod 33 is fixedly connected to the lower surface of the fixed frame 2.

[0035] A circular groove is provided on the upper surface of the support plate 1, and a first bearing 4 is fixedly embedded in the groove wall of the circular groove, and a roller positioning mechanism 5 is fixedly connected to the inner wall of the first bearing 4. The roller positioning mechanism 5 includes a liquid storage cylinder 51 fixedly connected to the inner wall of the inner ring of the first bearing 4, and the top of the liquid storage cylinder 51 is fixedly connected to a hollow turntable 52, and the outer wall of the bottom end of the hollow turntable 52 is fixedly connected to a plurality of universal balls 15, and the outer wall of the universal balls 15 is rollingly connected to the groove wall of the circular groove. The upper surface of the hollow turntable 52 and the upper surface of the support plate 1 are on the same horizontal plane, and the top of the hollow turntable 52 is fixedly connected to two connecting pipes 53, and the tops of the two connecting pipes 53 are fixedly connected to a storage cylinder 54, and the outer wall of the storage cylinder 54 is fixedly connected to the upper surface of the hollow turntable 52, and the side wall of the storage cylinder 54 is provided with a through hole, and the hole wall of the through hole is movably connected with a movable The movable rod 55 and the two side ends of the movable rod 55 are respectively fixedly connected with a sealing rubber block 56 and an arc-shaped clamping plate 57, the outer wall of the sealing rubber block 56 is in sealing and movable contact with the inner wall of the storage cylinder 54, the outer wall of the arc-shaped clamping plate 57 is fixedly connected with a rubber anti-slip sheet 58, the inner wall of the fixed frame 2 is fixedly connected with an electric push rod 59, the top end of the electric push rod 59 passes through the inner wall of the liquid storage cylinder 51 and is fixedly sleeved with a second bearing 510, the top of the second bearing 510 is fixedly sleeved with a sealing rubber cover 511, the outer wall of the sealing rubber cover 511 is in sealing and movable contact with the inner wall of the liquid storage cylinder 51, the moving end of the electric push rod 59 is movably sleeved with a third bearing 512, the bottom end outer wall of the liquid storage cylinder 51 is provided with a fixed through hole for installing the third bearing 512, and the interior of the liquid storage cylinder 51, the hollow turntable 52 and the two storage cylinders 54 are commonly filled with a hydraulic oil layer 513.

[0036] The outer wall of the support plate 1 is fixedly connected to a driving mechanism 6 for rotating the roller positioning mechanism 5. The driving mechanism 6 includes a U-shaped frame 61 fixedly connected to the lower surface of the support plate 1, and the inner wall of the U-shaped frame 61 is fixedly connected to a driving motor 62. The output end of the driving motor 62 passes through the lower surface of the U-shaped frame 61 and is fixedly connected to a gear 63. The outer wall of the liquid storage cylinder 51 is fixedly sleeved with an external gear ring 64 that meshes with the gear 63.

[0037] The outer walls on both sides of the support plate 1 are respectively fixedly connected with a mounting frame 10 and a purification box 11, the inner wall of the mounting frame 10 is fixedly connected with an industrial computer 12, the top of the mounting frame 10 is fixedly connected with a touch-screen control panel 13, the upper surface of the purification box 11 is fixedly connected with a mechanical arm 14, the operating end of the mechanical arm 14 is fixedly connected with a pick seat positioning auxiliary mechanism 7, the pick seat positioning auxiliary mechanism 7 includes a hollow cylinder 71 fixedly connected to the operating end of the mechanical arm 14, the outer wall of the bottom end of the hollow cylinder 71 is fixedly sleeved with a rubber retaining ring 72, the outer wall of the rubber retaining ring 72 is fixedly sleeved with an expansion sleeve 73, a vent 74 is provided on the cylinder wall of the hollow cylinder 71 located on the inner side of the expansion sleeve 73, a positioning plate 75 is fixedly connected to the outer wall of the hollow cylinder 71, and a three-way reversing solenoid valve 76 is fixedly connected to the outer wall of the hollow cylinder 71. This mechanism can improve the accuracy of the positioning of the welding angle of the pick seat.

[0038] The outer wall of the robot arm 14 is fixedly connected to a cooling mechanism 8 in the welding area of ​​the pick seat, and the cooling mechanism 8 in the welding area of ​​the pick seat includes a plurality of guide rings 81 fixedly connected to the outer wall of the robot arm 14, and the inner walls of the plurality of guide rings 81 are commonly connected to a hose 82, and the air outlet end of the hose 82 is fixedly connected to the air inlet end of the three-way reversing solenoid valve 76, and the outer air outlet end of the three-way reversing solenoid valve 76 is fixedly connected to a Y-shaped rubber tube 83, and the inner wall of the Y-shaped rubber tube 83 is fixedly connected to a plurality of positioning wires 84, and the bottom end of the hose 82 is fixedly connected to a cooling box 85, and the side wall of the cooling box 85 is fixedly embedded with a plurality of semiconductor cooling plates 86, and the cooling sides of the plurality of semiconductor cooling plates 86 are commonly fixedly connected to a metal heat-conducting frame 87, and the heat dissipation sides of the plurality of semiconductor cooling plates 86 are commonly fixedly connected to a heat sink 88, and the bottom end of the cooling box 85 is fixedly connected to the air outlet end of the vacuum pump 98. This mechanism can improve the quality of the pick seat welding.

[0039] A smoke and dust removal mechanism 9 is provided inside the purification box 11, and the smoke and dust removal mechanism 9 includes an activated carbon filter plate 91 fixedly connected to the inner wall of the purification box 11, and a composite filter plate 92 is fixedly connected to the lower surface of the activated carbon filter plate 91. A hollow annular cavity 93 is provided inside the support plate 1, and a plurality of air inlets 94 are provided on the top of the hollow annular cavity 93. An L-shaped conduit 95 is fixedly connected to the cavity wall of the hollow annular cavity 93, and an air outlet end of the L-shaped conduit 95 passes through the inner wall of the purification box 11, the activated carbon filter plate 91 and the lower surface of the composite filter plate 92. A threaded hole is provided on the outer wall of the bottom end of the purification box 11, and a sealing plug 96 is threadedly connected to the hole wall of the threaded hole. An L-shaped bracket 97 is fixedly connected to the outer wall of the purification box 11, and an air pump 98 is fixedly embedded in the outer wall of the L-shaped bracket 97. The air inlet end of the air pump 98 passes through the inner wall of the top of the purification box 11. This mechanism can purify welding smoke and improve the environmental protection performance of the device.

[0040] The touch screen control panel 13 is electrically connected to the input end of the industrial computer 12 through a wire, and the electric hydraulic rod 31, the electric push rod 59, the drive motor 63, the three-way reversing solenoid valve 76, the semiconductor refrigeration plate 86 and the mechanical arm 14 are all connected to the output end of the industrial computer 12 through a wire. The industrial computer 12 runs through an operating system and communicates with external devices through input and output interfaces (such as serial port RS485, parallel port, network port, CAN bus). Users can write control programs on the industrial computer 12 to control and monitor the mechanical arm 14, motor, electric push rod and other equipment. The above-mentioned power-on equipment and telecommunication connections are existing technologies and will not be repeated here.

[0041] The operating principle of the present invention is described as follows: when the coal mining machine drum needs to be welded with a pick seat, first, the touch screen control panel 13, the industrial computer 12 and the programming software pre-installed in the industrial computer 12 are used to set labels for multiple pick seat welding positions on the coal mining machine drum in turn, and multiple label icons are arranged in turn on the screen of the touch screen control panel 13. At the same time, according to the requirements and specifications of the design drawings, a control program for controlling the mechanical arm 14 is written for each label separately. Through these control programs, the operation of the mechanical arm 14 can be automatically controlled. When a pick seat on the coal mining machine drum is welded, When the welding position needs to position the pick seat at a corresponding angle for welding, the staff first touches the number icon corresponding to the welding position of the pick seat on the coal mining machine drum on the touch screen control panel 13, and then the industrial computer 12 automatically runs the control program of the mechanical arm 14 in the number, and adjusts the pick seat at the operating end of the mechanical arm 14 to a welding angle that meets the design standards, and finally moves the adjusted pick seat to the welding position of the coal mining machine drum, thereby completing the purpose of automatic and accurate positioning of the pick seat, and finally welds the positioned pick seat to the coal mining machine drum through welding equipment;

[0042] During the welding and positioning process of the pick seat on the coal mining machine drum, the coal mining machine drum is first hoisted onto the hollow turntable 52 by hoisting equipment, and the coal mining machine drum is between the two arc-shaped clamping plates 57. Then the staff starts the electric push rod 59 through the touch screen control panel 13 and the industrial computer 12. The moving end of the electric push rod 59 pushes the second bearing 510 and the sealing rubber cover 511 to move upward, and the sealing rubber cover 511 pushes the hydraulic oil layer 513 in the liquid storage cylinder 51, so that the hollow turntable 52 and the liquid storage cylinder 5 1 and the hydraulic oil in the receiving cylinder 54 push the sealing rubber block 56 to move, and the sealing rubber block 56 pushes the arc clamping plate 57 to move through the moving rod 55, so that the two arc clamping plates 57 clamp the coal mining machine drum, and because the hydraulic oil inside the two receiving cylinders 54 is connected to the hollow turntable 52 through the connecting pipe 53, the amount of hydraulic oil in the two receiving cylinders 54 is the same, thereby causing the coal mining machine drum to be clamped to the center position of the hollow turntable 52 by the arc clamping plate 57, and the positioning of the coal mining machine drum is completed;

[0043] Then the staff puts the pick seat to be welded into the hollow cylinder 71 through the mounting hole for installing the pick, and at this time the staff sends an electrical signal to the industrial computer 12 through the touch screen control panel 13, and the industrial computer 12 controls the vacuum pump 98 and the three-way reversing solenoid valve 76 to be powered on and started, and the air outlet of the vacuum pump 98 delivers air into the hose 82, and enters the hollow cylinder 71 through the three-way reversing solenoid valve 76 that is powered on and reversing, and then the air in the hollow cylinder 71 expands the expansion sleeve 73 through the vent hole 74, and the expanded expansion sleeve 73 can position the pick seat to be welded, so that the pick seat can be stable on the expansion sleeve 73. The worker then accurately adjusts the placement angle of the pick seat by positioning the positioning piece 75, so that the mechanical arm 14 controls the pick seat to be welded to move to the coal mining machine drum for accurate welding angle positioning. After that, the worker touches the number icon on the touch screen control panel 13 according to the corresponding welding position of the pick seat to be welded on the coal mining machine drum, and then the industrial computer 12 controls the mechanical arm 14 to automatically move the accurately positioned pick seat to be welded to the coal mining machine drum. After the positioning of the welding pick seat is completed, the three-way reversing solenoid valve 76 is controlled by the touch screen control panel 13 and the industrial computer 12. The power is turned off, and the air guide direction of the three-way reversing solenoid valve 76 is changed. At this time, the air delivered by the air pump 98 is delivered to the Y-shaped rubber tube 83 through the unpowered three-way reversing solenoid valve 76. Then, the pick seat to be welded with the welding angle positioned is welded to the corresponding welding position of the coal mining machine drum through the welding equipment. After the welding of one pick seat is completed, the above steps are repeated to weld and install the next pick seat, and the next label icon is touched on the touch screen control panel 13 to install the next pick seat to be welded. The industrial computer 12 also controls the drive motor 62 to start, and the drive motor 62 drives the gear 63 through the gear 63. The outer gear ring 64 drives the liquid storage cylinder 51 to rotate a certain angle, and the liquid storage cylinder 51 drives the hollow turntable 52 to rotate a certain angle, so that the upper and lower pick seat welding positions of the coal mining machine drum are close to the mechanical arm 14, which can avoid the situation that the pick seat welding position of the coal mining machine drum is too far away from the mechanical arm 14, causing the mechanical arm 14 to position the welding angle of the pick seat to be welded inaccurately. After the drive motor 62 rotates a certain angle each time, the industrial computer 12 controls the drive motor 62 to stop rotating, and the angle of the hollow turntable 52 controlled by the drive motor 62 can be set in advance in the industrial computer 12;

[0044] In addition, when the pick seat to be welded is welded on the coal mining machine drum, especially when the lower part of the pick seat is welded and fixed, the staff controls the electric hydraulic rod 31 to move through the touch screen control panel 13 and the industrial computer 12, and the electric hydraulic rod 31 pushes the fixing frame 2 to rise, and the fixing frame 2 pushes the support plate 1 to rise in height, and the support plate 1 drives the coal mining machine drum to rise in height, thereby facilitating the bottom of the pick seat to be welded on the coal mining machine drum to be exposed to the staff, so that it is convenient for the staff to perform welding operations on the bottom area of ​​the pick seat through welding equipment, and there is no need to flip the coal mining machine drum, which saves time and effort. The mechanism enables the pick seat to be welded to the coal mining machine drum with automatic and accurate positioning of the welding angle, and the coal mining machine drum pick seat welding positioning device also has a height adjustment function, which is convenient for the pick seat to be exposed to the staff, and the bottom area of ​​the pick seat can be conveniently welded without flipping the coal mining machine drum, which not only improves the convenience and efficiency of welding and installation of the pick seat and the coal mining machine drum, but also reduces the labor intensity of the welders;

[0045] When the pick seat is welded to the coal mining machine drum by the staff through welding equipment, the semiconductor refrigeration plate 86 is started by controlling the touch screen control panel 13 and the industrial computer 12. The cooling side of the semiconductor refrigeration plate 86 can reduce the surface temperature of the metal heat-conducting frame 87. Then the vacuum pump 98 transports the air to the cooling box 85, and the air is cooled by the low-temperature metal heat-conducting frame 87. Finally, the low-temperature air enters the Y-shaped rubber tube 83 through the hose 82 and the three-way reversing solenoid valve 76, and the two air outlet ends of the Y-shaped rubber tube 83 are bent by the staff to the outside of the pick seat to be welded, and the two air outlet ends of the Y-shaped rubber tube 83 are respectively transported to the top and bottom of the welding position of the pick seat to be welded. At the same time, the angles of the two air outlet ends of the Y-shaped rubber tube 83 are stably maintained by bending and positioning the positioning wire 84, which will not cause the unstable jet direction of the air outlet end of the Y-shaped rubber tube 83. At this time, the two air outlet ends of the Y-shaped rubber tube 83 are used to spray cold air on the upper and lower sides of the welding position of the pick seat to be welded to cool down, which can effectively reduce the temperature of the area around the pick seat weld and reduce the range of the heat-affected zone. This local cooling can balance the thermal expansion caused by welding and limit the excessive deformation of the weld and its surrounding areas. When cold air is blown on the upper and lower surfaces of the pick seat welding position, the cooling speed of the weld is accelerated. In addition, during the solidification process of the metal welding liquid molten pool, rapid cooling can inhibit the growth of grains and promote the formation of finer grains, and fine grains can improve the strength and toughness of the weld. Moreover, blowing cold air can also accelerate the solidification speed of the edge of the metal welding liquid molten pool in the pick seat weld, which helps to drive the gas and impurities in the molten pool to the center of the molten pool, making it easier for the gas to escape from the center of the molten pool, while reducing the retention and mixing of impurities at the edge of the weld.

[0046] In addition, during the suction process of the vacuum pump 98, the smoke generated by welding is sucked through the L-shaped duct 95, the hollow annular cavity 93 and the air inlet 94. After the smoke is transported to the purification box 11, it is filtered and purified by the composite filter plate 92 and the activated carbon filter plate 91, and finally the clean air is transported to the cooling box 85 to ensure the environmental protection effect of the device. This mechanism enables the coal mining machine drum pick seat welding positioning device to have the function of continuous cooling of the welding area and purification of welding smoke, and the continuous cooling of the welding area can not only effectively prevent the pick sleeve welding angle positioning deformation, but also improve the welding quality, as well as the reliability and environmental protection performance of the device.

[0047] 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 pick seat welding positioning device, comprising a support plate (1), characterized in that: The bottom end of the support plate (1) is fixedly connected to a fixing frame (2), and the bottom end of the fixing frame (2) is fixedly connected to a lifting mechanism (3); The upper surface of the support plate (1) is provided with a circular groove, and a first bearing (4) is fixedly embedded in the groove wall of the circular groove, and a roller positioning mechanism (5) is fixedly connected to the inner wall of the first bearing (4); The outer wall of the support plate (1) is fixedly connected with a driving mechanism (6) for rotating the roller positioning mechanism (5); The outer walls on both sides of the support plate (1) are respectively fixedly connected with a mounting frame (10) and a purification box (11); the inner wall of the mounting frame (10) is fixedly connected with an industrial computer (12); the top of the mounting frame (10) is fixedly connected with a touch screen control panel (13); the upper surface of the purification box (11) is fixedly connected with a mechanical arm (14); and the operating end of the mechanical arm (14) is fixedly connected with a pick seat positioning auxiliary mechanism (7); The outer wall of the mechanical arm (14) is fixedly connected with a pick seat welding area cooling mechanism (8); A smoke and dust removal mechanism (9) is provided inside the purification box (11).

2. A coal mining machine drum pick seat welding positioning device according to claim 1, characterized in that: The lifting mechanism (3) comprises an electric hydraulic rod (31) fixedly connected to the lower surface of the fixing frame (2); the fixed end of the electric hydraulic rod (31) is fixedly sleeved with a support frame (32); a plurality of position-limiting through holes are provided on the upper surface of the support frame (32); and a T-shaped guide rod (33) is movably connected to the hole wall of the position-limiting through hole; the top end of the T-shaped guide rod (33) is fixedly connected to the lower surface of the fixing frame (2).

3. A coal mining machine drum pick seat welding positioning device according to claim 1, characterized in that: The roller positioning mechanism (5) comprises a liquid storage cylinder (51) fixedly connected to the inner wall of the inner ring of the first bearing (4); the top end of the liquid storage cylinder (51) is fixedly connected to a hollow turntable (52); the top end of the hollow turntable (52) is fixedly connected to two connecting tubes (53); the top ends of the two connecting tubes (53) are fixedly connected to a storage cylinder (54); the outer wall of the storage cylinder (54) is fixedly connected to the upper surface of the hollow turntable (52); a through hole is formed in the side wall of the storage cylinder (54); and a moving rod (55) is movably connected to the hole wall of the through hole; the two side ends of the moving rod (55) are respectively fixedly connected to a sealing rubber block (56) and an arc-shaped clamping plate (57); the outer wall of the sealing rubber block (56) is in sealing and movable contact with the inner wall of the storage cylinder (54); the arc-shaped clamping plate (57) is in sealing and movable contact with the inner wall of the storage cylinder (54); The outer wall of the plate (57) is fixedly connected with a rubber anti-slip sheet (58), the inner wall of the fixed frame (2) is fixedly connected with an electric push rod (59), the top end of the electric push rod (59) passes through the inner wall of the liquid storage cylinder (51) and is fixedly sleeved with a second bearing (510), the top of the second bearing (510) is fixedly sleeved with a sealing rubber cover (511), the outer wall of the sealing rubber cover (511) is in sealing and movable contact with the inner wall of the liquid storage cylinder (51), the movable end of the electric push rod (59) is movably sleeved with a third bearing (512), the outer wall of the bottom end of the liquid storage cylinder (51) is provided with a fixed through hole for installing the third bearing (512), and the interior of the liquid storage cylinder (51), the hollow turntable (52) and the two storage cylinders (54) are collectively filled with a hydraulic oil layer (513).

4. A coal mining machine drum pick seat welding positioning device according to claim 3, characterized in that: A plurality of universal balls (15) are fixedly connected to the outer wall of the bottom end of the hollow turntable (52), and the outer wall of the universal balls (15) is rollingly connected to the groove wall of the circular groove. The upper surface of the hollow turntable (52) and the upper surface of the support plate (1) are on the same horizontal plane.

5. A coal mining machine drum pick seat welding positioning device according to claim 4, characterized in that: The driving mechanism (6) comprises a U-shaped frame (61) fixedly connected to the lower surface of the support plate (1); the inner wall of the U-shaped frame (61) is fixedly connected to a driving motor (62); the output end of the driving motor (62) passes through the lower surface of the U-shaped frame (61) and is fixedly connected to a gear (63); and the outer wall of the liquid storage cylinder (51) is fixedly sleeved with an outer gear ring (64) meshing with the gear (63).

6. A coal mining machine drum pick seat welding positioning device according to claim 1, characterized in that: The pick seat positioning auxiliary mechanism (7) comprises a hollow cylinder (71) fixedly connected to the operating end of the mechanical arm (14); the outer wall of the bottom end of the hollow cylinder (71) is fixedly sleeved with a rubber retaining ring (72); the outer wall of the rubber retaining ring (72) is fixedly sleeved with an expansion sleeve (73); a vent hole (74) is provided on the cylinder wall of the hollow cylinder (71) located inside the expansion sleeve (73); the outer wall of the hollow cylinder (71) is fixedly connected with a positioning plate (75); and the outer wall of the hollow cylinder (71) is fixedly connected with a three-way reversing solenoid valve (76).

7. A coal mining machine drum pick seat welding positioning device according to claim 6, characterized in that: The smoke and dust removal mechanism (9) comprises an activated carbon filter plate (91) fixedly connected to the inner wall of the purification box (11); a composite filter plate (92) is fixedly connected to the lower surface of the activated carbon filter plate (91); a hollow annular cavity (93) is provided inside the support plate (1); a plurality of air inlets (94) are provided at the top of the hollow annular cavity (93); an L-shaped conduit (95) is fixedly connected to the cavity wall of the hollow annular cavity (93); and an air outlet end of the L-shaped conduit (95) is provided. A threaded hole is formed on the outer wall of the bottom end of the purification box (11), which passes through the inner wall of the purification box (11), the activated carbon filter plate (91) and the lower surface of the composite filter plate (92). A sealing plug (96) is threadedly connected to the hole wall of the threaded hole. An L-shaped bracket (97) is fixedly connected to the outer wall of the purification box (11). An air pump (98) is fixedly embedded in the outer wall of the L-shaped bracket (97). The air inlet end of the air pump (98) passes through the inner wall of the top of the purification box (11).

8. A coal mining machine drum pick seat welding positioning device according to claim 7, characterized in that: The cutting tooth seat welding area cooling mechanism (8) comprises a plurality of guide rings (81) fixedly connected to the outer wall of the mechanical arm (14); the inner walls of the plurality of guide rings (81) are commonly connected to a hose (82); the air outlet end of the hose (82) is fixedly connected to the air inlet end of the three-way reversing solenoid valve (76); the outer air outlet end of the three-way reversing solenoid valve (76) is fixedly connected to a Y-shaped rubber tube (83); the inner wall of the Y-shaped rubber tube (83) is fixedly connected to a plurality of positioning The bottom end of the hose (82) is fixedly connected to a cooling box (85), a plurality of semiconductor cooling sheets (86) are fixedly embedded in the side wall of the cooling box (85), the cooling sides of the plurality of semiconductor cooling sheets (86) are fixedly connected to a metal heat-conducting frame (87), the heat-dissipating sides of the plurality of semiconductor cooling sheets (86) are fixedly connected to a heat sink (88), and the bottom end of the cooling box (85) is fixedly connected to the air outlet end of the vacuum pump (98).

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