A suspended mobile working platform for automatic welding and an operation method thereof

Abstract

The present invention relates to the technical field of automatic welding equipment for storage tanks, and particularly relates to a suspended mobile working platform for automatic welding and an operation method. The suspended mobile working platform includes a suspended mobile trolley slidably installed on the storage tank body. Platform lifting track frames are detachably installed on the left and right sides of the bottom end of the suspended mobile trolley. An operating platform is arranged inside the bottom end of the platform lifting track frame. A driving member is arranged inside the operating platform, and the driving member is used to drive the operating platform to move up and down on one side of the platform lifting track frame. The suspended mobile trolley moves horizontally along the tank wall plate through rollers driven by a speed reducer. Two platform lifting track frames are respectively hung on both sides of the suspended mobile trolley. The platform lifting track frames are equipped with operating platforms, enabling the equipment to operate simultaneously on both sides of the wall plate. For wall plates with different thicknesses, it can be adjusted to be compatible with different wall plates. At the same time, different slag cleaning intensities can be carried out according to different wall plate thicknesses, and it can automatically follow the welding machine to achieve full-automatic following and automatic welding during the movement.

Description

Technical Field

[0001] The present invention relates to the technical field of automatic welding equipment for storage tanks, and in particular to a hanging mobile working platform for automatic welding and an operation method thereof. Background Art

[0002] Currently, for the welding of the circumferential seams and vertical seams of large storage tanks, a frame structure is mostly used. The storage tank body equipment is relatively complex, which is not conducive to disassembly, assembly and transportation. Moreover, the whole equipment cannot freely move up and down vertically. If a lifting platform is used inside the equipment, in order to be compatible with the length of the vertical seams of the storage tank body, the equipment itself needs to be made very large, increasing the manufacturing cost and installation difficulty. For an automatic welding equipment without a lifting platform, workers need to climb to platforms at different heights of the equipment, increasing the risk of manual operation.

[0003] In the prior art, a patent with the publication number CN105499855B discloses an auxiliary working bin for automatic welding of large storage tanks and its use method, including a rectangular frame, circumferential plate transverse moving rollers, a motor and a speed reducer. The rectangular frame is divided into a front bin and a rear bin, and there is a gap for the circumferential plate to extend between the front and rear bins. The circumferential plate transverse moving rollers are fixedly arranged between the tops of the front and rear bins. The motor drives the circumferential plate transverse moving rollers to rotate through the speed reducer, so that the whole auxiliary working bin for automatic welding of large storage tanks can move along the top of the circumferential plate.

[0004] The above structure uses a frame structure as a whole for welding the storage tank. However, during the welding process, the lifting can only be carried out in a small range within the frame platform, and the flexibility of equipment operation is poor. It cannot take into account the longer vertical seams and cannot realize the automatic welding of circumferential seams and vertical seams. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a hanging mobile working platform for automatic welding and an operation method thereof, so as to solve the problems that during the welding process, the lifting can only be carried out in a small range within the frame platform, the flexibility of equipment operation is poor, the longer vertical seams cannot be taken into account, and the automatic welding of circumferential seams and vertical seams cannot be realized.

[0006] Based on the above purpose, the present invention provides a hanging mobile working platform for automatic welding, including a hanging mobile trolley slidably installed on the storage tank body. Removable platform lifting track frames are installed on the left and right sides at the bottom of the hanging mobile trolley. An operating platform is arranged inside the bottom of the platform lifting track frame, and a driving member is arranged inside the operating platform for driving the operating platform to move up and down on one side of the platform lifting track frame.

[0007] On one side of the top of the hanging mobile pulley, a hanging frame structure is fixedly installed. On one side of the hanging frame structure, a welding track is fixedly installed. Inside the welding track, a welding head for welding is arranged, and a grinding piece is arranged on the welding track. The grinding piece is used for cleaning the weld seams of the circumferential seams and vertical seams of the storage tank body.

[0008] The hanging mobile pulley includes a pulley frame. At the bottom end of the pulley frame, a speed reducer is movably installed. The output end of the speed reducer is fixedly connected with double V-shaped rollers. The double V-shaped rollers are arranged on both sides of the pulley frame. On both sides of the pulley frame, horizontal support plates are slidably installed. At the bottom end of the horizontal support plate, a displacement sensor is fixedly installed. The displacement sensor is electrically connected with the grinding piece. A vertical rod is fixedly installed at the bottom of the pulley frame.

[0009] Preferably, the platform lifting track frame includes a connecting ear plate fixedly installed at the bottom end of the hanging mobile pulley. At the bottom end of the connecting ear plate, a climbing frame beam is fixedly installed. On one side of the climbing frame beam, a transmission rack is fixedly installed. On both sides of the climbing frame beam, sliding rails are provided. At the bottom end inside the sliding rail, a limiting block is fixedly installed.

[0010] Preferably, the driving member includes an installation shell fixedly installed inside the working platform. On both sides of the installation shell, pulley broken shaft protection plates are fixedly installed. The pulley broken shaft protection plates are slidably installed on the outside of the climbing frame beam. Inside the pulley broken shaft protection plate, an anti-broken shaft protection plate is fixedly installed. On one side of the anti-broken shaft protection plate, a pressing wheel is rotatably installed. The pressing wheel abuts against one side of the transmission rack. On the other side of the transmission rack, a gear is meshingly rotated. The gear is rotatably installed on one side of the anti-broken shaft protection plate. A first motor is fixedly installed inside the installation shell. The output end of the first motor is fixedly connected with the gear.

[0011] Preferably, a differential anti-falling device is further arranged on the anti-broken shaft protection plate. On the differential anti-falling device, a toothed disc meshing with the transmission rack is arranged. The differential anti-falling device is located below the gear.

[0012] Preferably, two second attaching wheels arranged in a mirror image are fixedly installed on one side of the climbing frame beam. Inside the vertical rod, a first attaching wheel is movably installed. The second attaching wheel and the first attaching wheel are arranged in an up-and-down correspondence, and both the second attaching wheel and the first attaching wheel abut against one side of the storage tank body.

[0013] Preferably, the hanging frame structure includes a track hanging frame fixedly installed on the hanging mobile pulley. Anti-falling devices are fixedly installed at the tops of the track hanging frames. And on one side of the track hanging frame, a hanging frame is fixedly installed. The welding track is fixedly installed on both sides of the hanging frame.

[0014] Preferably, the welding track includes track rods fixedly installed on both sides of the suspension bracket. Magnets are fixedly installed on both sides of the track rods, and a welding seat is slidably installed outside the track rods. A support frame is fixedly installed on the top of the welding seat, and a grinding member is fixedly installed on one side of the support frame. The grinding member is located above the welding head.

[0015] Preferably, the grinding member includes a frame seat fixedly installed on one side of the support frame. A spring seat is fixedly installed inside the frame seat, and an electromagnet is arranged inside the spring seat. The electromagnet is electrically connected to a displacement sensor. The welding head is sleeved on one end of the spring seat, and a magnet block corresponding to the electromagnet is arranged on one side of the welding head;

[0016] One side of the magnet block abuts against a friction wheel. A sliding rod is slidably installed on one side of the friction wheel, and the sliding rod is installed on the inner wall of the frame seat. The other side of the friction wheel abuts against a round roller. A second motor is fixedly installed outside the frame seat, and the output end of the second motor is fixedly connected to one end of the round roller.

[0017] Preferably, the round roller includes an upper cylinder and a lower cylinder. The output end of the second motor is fixedly connected to the top end of the upper cylinder. The friction coefficient of the upper cylinder is smaller than that of the lower cylinder. The magnetic pole of the magnet block is the same as the magnetic pole of the magnetic field generated by the electromagnet.

[0018] The embodiment of the present specification also provides an operation method of the above-mentioned suspension mobile working platform for automatic welding, including the following steps:

[0019] After the suspension mobile trolley is assembled on the ground, it is lifted by a crane and placed on the upper end face of the wall plate of the storage tank body. Adjust the first attaching wheel on the suspension mobile trolley to make it fully close to the wall plate. Assemble the platform lifting track frame and the working platform on the ground. Lift the two side platform lifting track frames together with the working platform to the installation positions of the suspension mobile trolley by a crane respectively, and connect and fix them with pin shafts. Lift the hanging frame structure to the installation position of the suspension mobile trolley and connect it with bolts, and lift the welding track carrying the welding head and the grinding member to the hanging point of the hanging frame structure for hanging;

[0020] When vertical weld seam welding operation is required, move the operation platform to raise it to the uppermost position of the vertical weld. After reaching the position, the worker pulls the welding track a certain distance away from the wall plate from the hanging rack structure to ensure that there is no friction or collision between the welding track and the wall plate of the storage tank body. After moving the hanging mobile pulley to the vertical weld welding position, the worker pushes the welding track towards the wall plate to make the welding track as close to the wall plate as possible. Then, the two side magnets make it adsorbed on the wall plate surface. During the tightening process, the operation platform descends controllably from top to bottom, and the welding head descends synchronously and controllably on the welding track until all the magnets on the track are fixed. Then, the operation platform together with the welding head on the welding track rises to the highest position of the upper end face of the wall plate. At this time, the welding preparation work is completed;

[0021] Start the welding equipment. The operation platform automatically welds from top to bottom synchronously according to the welding speed of the welding head. When reaching the bottom weld position, stop welding, and at the same time, the operation platform stops moving. During the welding process, the welding tracks on both sides of the wall plate can operate simultaneously. After welding, the operation platform moves upward, and the angle grinder in the upper frame of the welding seat contacts the weld, so that the second motor in the grinding part drives the round roller to rotate. Based on friction transmission, the round roller drives the friction wheel and the magnet block to rotate simultaneously, and the angle grinder outside the magnet block rotates to polish and clean the vertical weld;

[0022] When welding the circumferential weld seam of the wall plate, the welding head is on the annular track between the upper and lower wall plates and is not connected to the operation platform. Move the operation platform up and down to the welding position of the circumferential weld, and then start the hanging mobile pulley to reach the position where the welding head is located. Start the welding head on the welding seat to weld. The hanging mobile pulley moves horizontally along the circumferential weld following the welding speed of the welding head of the welding machine until the circumferential weld welding is completed. When the hanging mobile pulley returns along the original path, use the angle grinder on the welding seat to contact and polish the circumferential weld;

[0023] When the thickness of the arm plate during welding is relatively large, adjust the first pressing wheel on the hanging mobile pulley to make it fully close to the wall plate. Under the action of the displacement sensor on one side of the horizontal support plate, after the electromagnet is energized, the magnetic field poles generated push the angle grinder outside the magnet block towards the wall plate. Under the action of the wall plate, the angle grinder in the grinding part is closer to the arm plate weld. At the same time, the magnet block and the friction wheel move in the spring seat. By using the fact that the friction coefficient of the upper cylinder is less than that of the lower cylinder, the friction coefficient of the friction wheel is large in the lower cylinder part, and the angle grinder has a faster polishing efficiency. Thus, when the arm plate is relatively thick, the weld can be further strengthened and cleaned.

[0024] The beneficial effects of the present invention:

[0025] The roller driven by a speed reducer enables the suspended mobile trolley to move horizontally along the tank wall panel. While moving, the guiding performance of the wheel rim is taken into account. To improve the stability of the platform suspension and prevent the platform from tipping over horizontally, horizontal wheels are used to support both sides of the platform top, enabling the platform to move smoothly. In addition, two platform lifting track frames are respectively hung on both sides of the suspended mobile trolley, and an operation platform is equipped on the platform lifting track frame, enabling the equipment to operate simultaneously on both sides of the wall panel. For wall panels with different thicknesses, the operation platform can accommodate different wall panels by adjusting the width of both sides of the platform, and at the same time, perform different slag cleaning intensities according to different wall panel thicknesses. During circumferential and vertical welding operations, it can follow the movement of the welding machine to achieve full-automatic following and automatic welding. Brief Description of the Drawings

[0026] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only those of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0027] Figure 1 It is a three-dimensional structural schematic diagram of the whole of the present invention;

[0028] Figure 2 It is a front-view structural schematic diagram of the whole of the present invention;

[0029] Figure 3 It is a three-dimensional structural schematic diagram of the suspended mobile trolley of the present invention;

[0030] Figure 4 It is a three-dimensional structural schematic diagram of the platform lifting track frame and the operation platform of the present invention;

[0031] Figure 5 For the present invention Figure 4 It is an enlarged structural schematic diagram of part A in the present invention;

[0032] Figure 6 It is a three-dimensional structural schematic diagram of the platform lifting track frame of the present invention;

[0033] Figure 7 It is a three-dimensional structural schematic diagram of the welding track of the present invention;

[0034] Figure 8 It is a connection structural schematic diagram of the welding seat and the track of the present invention;

[0035] Figure 9 It is an internal structural schematic diagram of the frame seat of the present invention.

[0036] The marks in the figure are:

[0037] 1. Suspended mobile pulley; 11. Pulley frame; 12. Horizontal support plate; 13. Reducer; 14. Double V-shaped roller; 15. Displacement sensor; 16. Vertical rod; 17. First attaching wheel; 2. Platform lifting track frame; 21. Connecting ear plate; 22. Slide rail; 23. Transmission rack; 24. Limit stop; 25. Climbing frame beam; 26. Second attaching wheel; 3. Working platform; 31. First motor; 32. Tightening wheel; 33. Anti-breakshaft guard plate; 34. Differential anti-falling device; 35. Installation shell; 36. Pulley breakshaft guard plate; 37. Gear; 4. Storage tank body; 5. Hanging frame structure; 51. Track hanging frame; 52. Anti-falling device; 53. Suspension frame; 6. Welding track; 61. Track rod; 62. Magnet; 63. Welding seat; 64. Welding head; 67. Support frame; 7. Grinding part; 71. Frame seat; 72. Electromagnet; 73. Spring seat; 74. Angle grinder head; 75. Friction wheel; 76. Slide bar; 77. Second motor; 78. Round roller; 79. Magnet block; 8. Driving part; 9. Upper cylinder; 10. Lower cylinder. Detailed implementation manners

[0038] To make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments.

[0039] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 and Figure 9 shown, a suspended mobile working platform for automatic welding includes a suspended mobile pulley 1 slidably installed on a storage tank body 4. Platform lifting track frames 2 are detachably installed on the left and right sides of the bottom end of the suspended mobile pulley 1. An inner side of the bottom end of the platform lifting track frame 2 is provided with a working platform 3. A driving part 8 is arranged inside the working platform 3, and the driving part 8 drives the working platform 3 to move up and down on one side of the platform lifting track frame 2;

[0040] A hanging frame structure 5 is fixedly installed on the top of one side of the suspended mobile pulley 1. A welding track 6 is fixedly installed on one side of the hanging frame structure 5. A welding head 64 for welding is arranged inside the welding track 6, and a grinding part 7 is arranged on the welding track 6. The grinding part 7 is used for cleaning the weld seams of the circumferential seam and vertical seam of the storage tank body 4;

[0041] The hanging mobile pulley 1 includes a pulley frame 11. A speed reducer 13 is movably installed at the bottom end of the pulley frame 11. The output end of the speed reducer 13 is fixedly connected to a double-V roller 14. The double-V roller 14 is arranged on both sides of the pulley frame 11. Horizontal support plates 12 are slidably installed on both sides of the pulley frame 11. A displacement sensor 15 is fixedly installed at the bottom end of the horizontal support plate 12. The displacement sensor 15 is electrically connected to the grinding member 7. A vertical rod 16 is fixedly installed at the bottom of the pulley frame 11.

[0042] In this embodiment, the double-V roller 14 driven by the speed reducer 13 realizes the lateral movement of the hanging mobile pulley 1 on the storage tank body 4. In order to improve the stability of the platform suspension and prevent the platform from tipping horizontally, the first attaching wheels 17 are used to support both sides of the top of the platform, so that the platform can move smoothly. And two platform lifting track frames 2 are respectively installed on both sides of the hanging mobile pulley 1. The working platform 3 on one side of the platform lifting track frame 2 is convenient for operation, and the equipment can realize simultaneous operation on both sides of the wall plate. For different wall plate thicknesses, the working platform 3 can accommodate different wall plates by adjusting the width of both sides of the platform. At the same time, according to different wall plate thicknesses, the grinding members 7 on the welding track 6 perform different slag cleaning intensities.

[0043] When welding the vertical weld seam of the wall plate, start the welding equipment. The working platform 3 automatically welds from top to bottom synchronously according to the welding speed of the welding head 64. When reaching the bottom weld position, stop welding, and at the same time, the working platform 3 stops moving. During the welding process, the welding tracks 6 on both sides of the wall plate can work simultaneously.

[0044] When welding the circumferential weld seam of the wall plate, the welding head 64 is on the circular track between the upper and lower wall plates and is not connected to the working platform 3. Move the working platform 3 up and down to the welding position of the circumferential weld. Then start the hanging mobile pulley 1 to reach the position where the welding head 64 is located, and start the welding head 64 on the welding seat 63 to weld. The hanging mobile pulley 1 moves horizontally along the circumferential weld with the welding speed of the welding head 64 until the circumferential weld welding is completed.

[0045] As an implementation method, as Figure 3 、 Figure 4 、 Figure 5 and Figure 6 shown, the platform lifting track frame 2 includes a connecting ear plate 21 fixedly installed at the bottom end of the hanging mobile pulley 1. A climbing frame beam 25 is fixedly installed at the bottom end of the connecting ear plate 21. A transmission rack 23 is fixedly installed on one side of the climbing frame beam 25. Slide rails 22 are opened on both sides of the climbing frame beam 25. A limit stop block 24 is fixedly installed at the bottom end inside the slide rail 22.

[0046] The limit stop block 24 blocks and limits the working platform 3 at the upper and lower extreme positions to prevent the working platform 3 from sliding out of the track.

[0047] Among them, the driving member 8 includes an installation shell 35 fixedly installed inside the operation platform 3. Pulley shaft-breaking protection plates 36 are fixedly installed on both sides of the installation shell 35. The pulley shaft-breaking protection plates 36 are slidably installed on the outside of the climbing frame beam 25. An anti-shaft-breaking protection plate 33 is fixedly installed inside the pulley shaft-breaking protection plates 36. A tightening wheel 32 is rotatably installed on one side of the anti-shaft-breaking protection plate 33. The tightening wheel 32 abuts against one side of the transmission rack 23. A gear 37 is meshed and rotated on the other side of the transmission rack 23. The gear 37 is rotatably installed on one side of the anti-shaft-breaking protection plate 33. A first motor 31 is fixedly installed inside the installation shell 35. The output end of the first motor 31 is fixedly connected to the gear 37.

[0048] In this embodiment, the first motor 31 drives the gear 37 to rotate. The gear 37 meshes with the transmission rack 23 on the climbing frame beam 25. The transmission rack 23 abuts against one side of the tightening wheel 32 to enhance stability and prevent tooth skipping during movement, thereby driving the pulley shaft-breaking protection plates 36 on both sides of the operation platform 3 to move on the slide rail 22, and then realizing the up and down movement of one side of the platform lifting track frame 2.

[0049] As an implementation manner, as Figure 4 、 Figure 5 shown, a differential anti-falling device 34 is further provided on the anti-shaft-breaking protection plate 33. A toothed disc meshing with the transmission rack 23 is provided on the differential anti-falling device 34. The differential anti-falling device 34 is located below the gear 37.

[0050] In this embodiment, by using the toothed disc meshing with the transmission rack 23 provided on the differential anti-falling device 34, the operation platform 3 outside the platform lifting track frame 2 is prevented from descending, and it is locked instantly when the shaft breaks and falls, preventing the whole platform from falling and enhancing the overall safety.

[0051] As an implementation manner, as Figure 1 、 Figure 2 、 Figure 3 shown, two second attaching wheels 26 arranged in a mirror image are fixedly installed on one side of the climbing frame beam 25. A first attaching wheel 17 is movably installed inside the vertical rod 16. The second attaching wheels 26 and the first attaching wheel 17 are arranged corresponding to each other up and down, and both the second attaching wheels 26 and the first attaching wheel 17 abut against one side of the storage tank body 4.

[0052] In this embodiment, through the second attaching wheels 26 and the first attaching wheel 17, while the suspension moving trolley 1 moves as a whole, the guiding performance of the wheel rim is taken into account. In order to improve the suspension stability of the operation platform 3 and prevent horizontal overturning, when the double V-shaped rollers 14 driven by the speed reducer 13 are used to realize the lateral movement of the suspension moving trolley 1 on the storage tank body 4, with the assistance of the second attaching wheels 26 and the first attaching wheel 17, the operation platform 3 can move smoothly.

[0053] As an implementation manner, asFigure 2 , Figure 3 , Figure 7 As shown in Figure 7 , the hanging rack structure 5 includes a track hanging rack 51 fixedly installed on the hanging mobile trolley 1. Anti-falling devices 52 are fixedly installed on the tops of the track hanging racks 51, and a suspension rack 53 is fixedly installed on one side of the track hanging rack 51. Welding tracks 6 are fixedly installed on both sides of the suspension rack 53.

[0054] In this embodiment, the anti-falling device 52 is connected to the personnel on the operation platform 3, and this component plays the role of preventing personnel from falling and hanging the welding track 6.

[0055] As an implementation manner, as shown in Figure 1 , Figure 2 , Figure 7 , Figure 8 As shown in Figure 8 , the welding track 6 includes track rods 61 fixedly installed on both sides of the suspension rack 53. Magnets 62 are fixedly installed on both sides of the track rods 61, and a welding seat 63 is slidably installed outside the track rods 61. A welding head 64 is fixedly installed outside the welding seat 63. A support frame 67 is fixedly installed on the top of the welding seat 63. A grinding member 7 is fixedly installed on one side of the support frame 67, and the grinding member 7 is located above the welding head 64.

[0056] In this embodiment, when welding the vertical weld seam of the wall plate, the whole track is adsorbed on the surface of the storage tank body 4 through a number of magnets 62. Start the welding equipment, and the operation platform 3 automatically welds from top to bottom synchronously according to the welding speed of the welding head 64. When reaching the bottom weld position, stop welding, and at the same time, the operation platform 3 stops moving. During the welding process, the welding tracks 6 on both sides of the wall plate can work simultaneously;

[0057] When welding the circumferential weld seam of the wall plate, the welding head 64 is on the circumferential track between the upper and lower wall plates and is not connected to the operation platform 3. Move the operation platform 3 up and down to the welding position of the circumferential weld, then start the hanging mobile trolley 1 to reach the position where the welding head 64 is located, and start the welding head 64 on the welding seat 63 to weld. The hanging mobile trolley 1 moves horizontally along the circumferential weld with the welding speed of the welding head 64 until the circumferential weld welding is completed;

[0058] As an implementation manner, as shown in Figure 7 , Figure 8 and Figure 9 As shown in Figure 9 , the grinding member 7 includes a frame seat 71 fixedly installed on one side of the support frame 67. A spring seat 73 is fixedly installed inside the frame seat 71. An electromagnet 72 is arranged inside the spring seat 73. The electromagnet 72 is electrically connected to the displacement sensor 15. The welding head 64 is sleeved on one end of the spring seat 73, and a magnet block 79 corresponding to the electromagnet 72 is arranged on one side of the welding head 64;

[0059] One side of the magnet block 79 is abutted against a friction wheel 75. A sliding rod 76 is slidably installed on one side of the friction wheel 75. The sliding rod 76 is installed on the inner wall of the frame base 71. A round roller 78 is abutted against the other side of the friction wheel 75. A second motor 77 is fixedly installed outside the frame base 71. The output end of the second motor 77 is fixedly connected to one end of the round roller 78.

[0060] In this embodiment, after the circumferential welding or vertical welding seam of the wall panel is welded, the second motor 77 in the grinding member 7 drives the round roller 78 to rotate. Based on friction transmission, the round roller 78 drives the friction wheel 75 and the magnet block 79 to rotate simultaneously, and the angle grinder 74 outside the magnet block 79 rotates to grind and clean the welding seam.

[0061] As an implementation manner, as Figure 7 , Figure 8 and Figure 9 shown, the round roller 78 includes an upper cylinder 9 and a lower cylinder 10. The output end of the second motor 77 is fixedly connected to the top end of the upper cylinder 9. The friction coefficient of the upper cylinder 9 is less than that of the lower cylinder 10. The magnetic pole of the magnet block 79 is the same as the magnetic pole of the magnetic field generated by the electromagnet 72.

[0062] In this embodiment, when the thickness of the arm plate during welding is relatively large, after the electromagnet 72 is energized, the generated magnetic pole pushes the angle grinder 74 outside the magnet block 79 towards the wall plate. At the same time, the magnet block 79 and the friction wheel 75 move in the spring seat 73 and are located on the lower cylinder 10. Furthermore, by using the fact that the friction coefficient of the upper cylinder 9 is less than that of the lower cylinder 10, the grinding efficiency of the angle grinder 74 is faster, so that when the arm plate is relatively thick, the welding seam can be further strengthened and cleaned.

[0063] As an implementation manner, an operation method of a suspended mobile working platform for automatic welding

[0064] includes the following steps:

[0065] Assemble the suspended mobile trolley 1 on the ground, lift it to the upper end face of the wall plate of the storage tank body 4 by a crane, and adjust the first attaching wheel 17 on the suspended mobile trolley 1 to make it fully close to the wall plate. Assemble the platform lifting track frame 2 and the working platform 3 on the ground, lift the two side platform lifting track frames 2 together with the working platform 3 to the installation position of the suspended mobile trolley 1 by a crane respectively, and connect and fix them with pins. Lift the hanging frame structure 5 to the installation position of the suspended mobile trolley 1 and connect it with bolts, and hoist the welding track 6 carrying the welding head 64 and the grinding member 7 to the hanging point of the hanging frame structure 5 for hanging connection;

[0066] When vertical weld seam welding operation is required, move the operation platform 3 to raise it to the uppermost end of the vertical weld. After reaching the position, the worker pulls the welding track 6 a certain distance away from the wall panel from the hanging structure 5 to ensure that there is no friction or collision between the welding track 6 and the wall panel of the storage tank body 4. After moving the hanging mobile pulley 1 to the vertical weld welding position, the worker pushes the welding track 6 towards the wall panel direction to make the welding track 6 as close to the wall panel as possible. Then, the two side magnets 62 make it adsorbed on the wall panel surface. During the tightening process, the operation platform 3 descends controllably from top to bottom, and the welding head 64 descends synchronously and controllably on the welding track 6 until all the magnets 62 on the track are fixed. Then, the operation platform 3 together with the welding head 64 on the welding track 6 rises to the highest position of the upper end face of the wall panel. At this time, the welding preparation work is completed;

[0067] Start the welding equipment. The operation platform 3 automatically welds from top to bottom synchronously according to the welding speed of the welding head 64. When reaching the bottom weld position, stop welding, and at the same time, the operation platform 3 stops moving. During the welding process, the welding tracks 6 on both sides of the wall panel can operate simultaneously. After welding, the operation platform 3 moves upward. The angle grinder 74 in the upper frame seat 71 of the welding seat 63 contacts the weld, and the second motor 77 in the grinding part 7 drives the round roller 78 to rotate. Based on friction drive, the round roller 78 drives the friction wheel 75 and the magnet block 79 to rotate simultaneously, and the angle grinder 74 outside the magnet block 79 rotates to polish and clean the vertical weld;

[0068] When welding the circumferential weld seam of the wall panel, the welding head 64 is on the annular track between the upper and lower wall panels and is not connected to the operation platform 3. Move the operation platform 3 up and down to the welding position of the circumferential weld. Then start the hanging mobile pulley 1 to reach the position where the welding head 64 is located, and start the welding head 64 on the welding seat 63 to weld. The hanging mobile pulley 1 moves horizontally along the circumferential weld following the welding speed of the welding head 64. Until the circumferential weld welding is completed, when the hanging mobile pulley 1 returns along the original path, use the angle grinder 74 on the welding seat 63 to contact and polish the circumferential weld;

[0069] When the thickness of the arm plate during welding is relatively large, adjust the first pressing wheel 17 on the hanging mobile pulley 1 to make it fully close to the wall panel. Under the action of the displacement sensor 15 on one side of the horizontal support plate 12, after the electromagnet 72 is energized, the magnetic field poles generated push the angle grinder 74 outside the magnet block 79 towards the wall panel direction. Under the action of the wall panel, the angle grinder 74 in the grinding part 7 is closer to the arm plate weld. At the same time, the magnet block 79 and the friction wheel 75 move in the spring seat 73. Using the friction coefficient of the upper cylinder 9 is less than that of the lower cylinder 10, the friction coefficient of the friction wheel 75 is larger in the part of the lower cylinder 10, and the grinding efficiency of the angle grinder 74 is faster. Thus, when the thickness of the arm plate is relatively thick, the weld can be further strengthened and cleaned.

[0070] Those of ordinary skill in the art should understand that any discussion of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention is limited to these examples; under the concept of the present invention, the technical features in the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations in different aspects of the present invention as described above, which are not provided in detail for the sake of brevity.

[0071] The present invention is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included within the protection scope of the present invention.

Claims

1. A suspended mobile work platform for automatic welding, comprising a suspended mobile pulley (1) slidably mounted on a storage tank body (4), characterized in that: The left and right sides of the bottom end of the suspended movable pulley (1) are detachably mounted with a platform lifting track frame (2); the inner side of the bottom end of the platform lifting track frame (2) is provided with a working platform (3); the interior of the working platform (3) is provided with a driving member (8); the driving member (8) is used to drive the working platform (3) to move up and down on one side of the platform lifting track frame (2); A hanger structure (5) is fixedly mounted on the top of one side of the suspension movable pulley (1), a welding track (6) is fixedly mounted on one side of the hanger structure (5), a welding head (64) for welding is arranged inside the welding track (6), and a grinding piece (7) is arranged on the welding track (6), and the grinding piece (7) is used to clean the circumferential seam and the vertical seam of the storage tank body (4); The suspended movable pulley (1) comprises a pulley frame (11), a reducer (13) is movably mounted at the bottom end of the pulley frame (11), a double V-shaped roller (14) is fixedly connected to the output end of the reducer (13), and the double V-shaped roller (14) is arranged on both sides of the pulley frame (11), and horizontal support plates (12) are slidably mounted on both sides of the pulley frame (11), a displacement sensor (15) is fixedly mounted at the bottom end of the horizontal support plate (12), and the displacement sensor (15) is electrically connected to the grinding piece (7), and a vertical rod (16) is fixedly mounted at the bottom of the pulley frame (11).

2. A suspended mobile working platform for automatic welding according to claim 1, characterized in that: The platform lifting track frame (2) comprises a connecting ear plate (21) fixedly mounted on the bottom end of the suspended moving pulley (1); a climbing frame beam (25) is fixedly mounted on the bottom end of the connecting ear plate (21); a transmission rack (23) is fixedly mounted on one side of the climbing frame beam (25); slide rails (22) are provided on both sides of the climbing frame beam (25); and a limit stopper (24) is fixedly mounted on the inner bottom end of the slide rail (22).

3. A suspended mobile working platform for automatic welding according to claim 2, characterized in that: The driving member (8) comprises a mounting shell (35) fixedly mounted inside the working platform (3), a pulley shaft breakage protection plate (36) fixedly mounted on both sides of the mounting shell (35), the pulley shaft breakage protection plate (36) being slidably mounted on the outside of the climbing frame beam (25), an anti-shaft breakage protection plate (33) fixedly mounted inside the pulley shaft breakage protection plate (36), a tensioning wheel (32) rotatably mounted on one side of the anti-shaft breakage protection plate (33), the tensioning wheel (32) being in contact with one side of the transmission rack (23), a gear (37) being meshed and rotatably mounted on the other side of the transmission rack (23), the gear (37) being rotatably mounted on one side of the anti-shaft breakage protection plate (33), a first motor (31) fixedly mounted inside the mounting shell (35), the output end of the first motor (31) being fixedly connected to the gear (37).

4. A suspended mobile working platform for automatic welding according to claim 3, characterized in that: The anti-broken shaft guard plate (33) is also provided with a differential anti-drop device (34), and the differential anti-drop device (34) is provided with a toothed disc meshing with the transmission rack (23), and the differential anti-drop device (34) is located below the gear (37).

5. The suspended mobile working platform for automatic welding according to claim 3, characterized in that: Two second wheels (26) arranged in a mirror image are fixedly mounted on one side of the climbing frame beam (25), and a first wheel (17) is movably mounted inside the vertical rod (16). The second wheel (26) and the first wheel (17) are arranged in correspondence with each other up and down, and both the second wheel (26) and the first wheel (17) abut against one side of the storage tank body (4).

6. The suspended mobile working platform for automatic welding according to claim 1, characterized in that: The hanger structure (5) comprises a track hanger (51) fixedly mounted on the suspended moving pulley (1), a fall arrester (52) fixedly mounted on the top of the track hanger (51), a suspension frame (53) fixedly mounted on one side of the track hanger (51), and welding tracks (6) fixedly mounted on both sides of the suspension frame (53).

7. A suspended mobile working platform for automatic welding according to claim 6, characterized in that: The welding track (6) comprises a track rod (61) fixedly mounted on both sides of a suspension frame (53), magnets (62) being fixedly mounted on both sides of the track rod (61), and a welding seat (63) being slidably mounted on the outside of the track rod (61), a support frame (67) being fixedly mounted on the top of the welding seat (63), a grinding piece (7) being fixedly mounted on one side of the support frame (67), and the grinding piece (7) being located above the welding machine head (64).

8. The suspended mobile working platform for automatic welding according to claim 7, characterized in that: The grinding piece (7) comprises a frame seat (71) fixedly mounted on one side of a support frame (67); a spring seat (73) is fixedly mounted inside the frame seat (71); an electromagnet (72) is arranged inside the spring seat (73); the electromagnet (72) is electrically connected to a displacement sensor (15); a welding head (64) is sleeved on one end of the spring seat (73); a magnet block (79) corresponding to the electromagnet (72) is arranged on one side of the welding head (64); A friction wheel (75) is abutted against one side of the magnet block (79), a slide bar (76) is slidably mounted on one side of the friction wheel (75), and the slide bar (76) is mounted on the inner wall of the frame seat (71), and a round roller (78) is abutted against the other side of the friction wheel (75). A second motor (77) is fixedly mounted on the outside of the frame seat (71), and an output end of the second motor (77) is fixedly connected to one end of the round roller (78).

9. A suspended mobile working platform for automatic welding according to claim 8, characterized in that: The circular roller (78) comprises an upper cylinder (9) and a lower cylinder (10), the output end of the second motor (77) is fixedly connected to the top end of the upper cylinder (9), the friction coefficient of the upper cylinder (9) is smaller than the friction coefficient of the lower cylinder (10), and the magnetic poles of the magnet block (79) are the same as the magnetic poles of the magnetic field generated by the electromagnet (72).

10. An operating method of a suspended mobile work platform for automatic welding, applied to the suspended mobile work platform for automatic welding as claimed in claim 9, characterized in that: The steps include: The suspension movable pulley (1) is assembled on the ground, and is lifted by a crane to the upper end surface of the wall plate of the storage tank body (4) and placed in position. The first contact wheel (17) on the suspension movable pulley (1) is adjusted so that it is fully close to the wall plate. The platform lifting track frame (2) and the working platform (3) are assembled on the ground. The platform lifting track frames (2) on both sides together with the working platform (3) are lifted by a crane to the installation position of the suspension movable pulley (1) and fixed with pins. The bracket structure (5) is lifted to the installation position of the suspension movable pulley (1) and connected with bolts. The welding track (6) carrying the welding machine head (64) and the grinding piece (7) is lifted to the hanging point of the bracket structure (5) for hanging. When it is necessary to perform vertical seam welding, the work platform (3) is moved to rise to the uppermost end of the vertical seam. After reaching the position, the worker pulls the welding track (6) from the bracket structure (5) to a certain distance away from the wall panel to ensure that the welding track (6) does not rub or collide with the wall panel of the tank body (4). After moving the hanging movable pulley (1) to the vertical seam welding position, the worker pushes the welding track (6) toward the wall panel to make the welding track (6) as close to the wall panel as possible, so that the magnets (62) on both sides make it adsorbed on the surface of the wall panel. During the tightening process, the work platform (3) is controllably lowered from top to bottom, and the welding head (64) is synchronously and controllably lowered on the welding track (6) until all the magnets (62) on the track are fixed. Then, the work platform (3) together with the welding head (64) on the welding track (6) rise to the highest point of the upper end surface of the wall panel. At this time, the welding preparation work is completed. The welding equipment is started, and the working platform (3) performs automatic welding from top to bottom synchronously according to the welding speed of the welding head (64). When the welding seam reaches the bottom, the welding is stopped and the working platform (3) stops moving. During the welding process, the welding tracks (6) on both sides of the wall plate can be operated simultaneously. After welding, the working platform (3) moves upward, and the angle grinding head (74) in the upper frame seat (71) of the welding seat (63) is used to contact the weld seam, so that the second motor (77) in the grinding piece (7) drives the round roller (78) to rotate. Based on friction transmission, the round roller (78) drives the friction wheel (75) and the magnet block (79) to rotate simultaneously, and the angle grinding head (74) outside the magnet block (79) rotates to grind and clean the vertical weld seam; When welding the girth weld of the wall plate, the welding head (64) is on the circular track between the upper and lower wall plates, not connected to the working platform (3), the mobile working platform (3) is raised and lowered to the welding position of the girth weld, then the suspended moving pulley (1) is started to reach the position of the welding head (64), the welding head (64) on the welding seat (63) is started to weld, the suspended moving pulley (1) moves horizontally along the girth weld at the welding speed of the welding head (64) until the girth weld is completed, and when the suspended moving pulley (1) returns along the original path, the angle grinder (74) on the welding seat (63) is used to contact and grind the girth weld; When the thickness of the arm plate is large during welding, the first contact wheel (17) on the suspension moving pulley (1) is adjusted to be sufficiently close to the wall plate. After the electromagnet (72) is connected to the current under the action of the displacement sensor (15) on one side of the horizontal support plate (12), the magnetic field poles generated push the angle grinding head (74) outside the magnet block (79) to move toward the wall plate. Under the action of the wall plate, the angle grinding head (74) in the grinding piece (7) and the arm plate weld are made closer. At the same time, the magnet block (79) and the friction wheel (75) move in the spring seat (73). The friction coefficient of the upper column (9) is smaller than that of the lower column (10). The friction coefficient of the friction wheel (75) is large at the lower column (10), and the grinding efficiency of the angle grinding head (74) is faster. Therefore, when the thickness of the arm plate is thick, the welding seam can be further cleaned.

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