Lung lobe magnetic shielding machining and overturning auxiliary tool and using method

Abstract

The invention belongs to the field of magnetic shielding, and relates to a lung lobe magnetic shielding machining and overturning auxiliary tool and a using method. The auxiliary tool comprises a bottom frame, a lower supporting plate and an upper pressing plate, the lower supporting plate comprises a lower supporting plate frame, movable supporting plates and a rear side baffle, the lower supporting plate frame comprises a front cross beam, a rear cross beam and a second connecting plate, the front cross beam and the rear cross beam are welded to the two ends of the second connecting plate, the movable supporting plates are installed on the two sides of the second connecting plate, and side face limiting assemblies are movably installed on the outer sides of the rear ends of the movable supporting plates. Cambered surface limiting assemblies are movably mounted on the outer sides of the front ends of the movable supporting plates. The using method of the auxiliary tool comprises the steps that the position of the movable supporting plate is adjusted according to the size of the lung lobe magnetic shield, the positions of the cambered surface limiting assembly and the side face limiting assembly are adjusted to be attached to the outer side face of the lung lobe magnetic shield, the height of the lifting bottom plate is adjusted, and the lung lobe magnetic shield is turned over through a forklift after being machined. The device is ingenious in design, easy to operate and high in safety, and magnetic shielding processing and auxiliary overturning of lung lobes with various radiuses and various head outlet positions can be met.

Description

Technical Field

[0001] The present invention belongs to the technical field of transformer magnetic shielding production, and specifically relates to a lobe magnetic shielding processing and flipping auxiliary tooling and a use method for ultra-high voltage transformers and converter transformers. Background Art

[0002] The lobe magnetic shield is an important component of ultra-high voltage transformers and high-end and low-end converter transformers. It is installed at the upper and lower ends of each core column to attract the main air leakage flux, improve the end leakage flux distribution, and reduce the additional loss of the structural parts and the hot spot temperature rise of the product.

[0003] The lobe magnetic shield consists of a cavity (laminated cardboard), silicon steel sheets, a top cover (laminated cardboard), and side covers. The silicon steel sheets weighing up to 450kg are installed within the laminated cardboard cavity. The lobe magnetic shield's manufacturing process requires high precision, and the top cover is relatively thin (2mm thick), with the side covers secured with only two insulating bolts.

[0004] "Lung lobe magnetic shielding" is an existing product commonly used in this field. The installation order is: place the cavity shell at the bottom; stack and press the silicon steel sheets into the inner layer of the lung lobe-shaped cavity shell; paste and install the upper cover plate; install and paste the side cover plate; flip the lung lobe magnetic shielding as a whole. According to the design structure, the lung lobe magnetic shielding often needs to be flipped 180° before installation, that is, turn one side of the upper cover plate to the bottom and then install it. Therefore, the flipping of the lung lobe magnetic shielding is particularly important. During the flipping process, it must be ensured that the lung lobe magnetic shielding is not damaged, the upper cover plate and the side cover plate are not deformed, and the silicon steel sheets inside the cavity are not loose or slipping. At present, the lung lobe magnetic shielding needs to be reinforced with multiple pull straps and tightened with two channel steels. With the help of a crane and an L-shaped flipping table, the flipping of the lung lobe magnetic shielding is completed after multiple lifting and positioning. It is time-consuming and labor-intensive, and it is easy to bump the lung lobe magnetic shielding. Flipping makes the product quality uncontrollable. Summary of the Invention

[0005] In response to the above technical problems, the present invention provides a lung lobe magnetic shielding processing and flipping auxiliary tooling and a method of use. The technical solutions adopted by the present invention are as follows: The cam is connected to the rear of the vehicle by means of a cam, and the cam is connected to the front of the vehicle by means of a cam, and the cam is connected to the rear of the vehicle by means of a cam, and the cam is connected to the rear of the vehicle by means of a cam. The cam limiter is connected to the front crossbeam in a sliding connection with the front crossbeam, and the cam limiter is connected to the front crossbeam by a screw thread on the top and the screw thread on the bottom. The cam limiter is connected to the front crossbeam by a screw thread on the top and the screw thread on the bottom. The cam limiter is connected to the front crossbeam by a screw thread on the top. The cam limiter is connected to the front crossbeam by a screw thread on the bottom. The cam limiter is connected to the front crossbeam by a screw thread on the

[0006] Preferably, six guide light axes are evenly welded on the rear surface of the rear crossbeam in the length direction, six guide holes are opened on the rear baffle at positions corresponding to the guide light axes, and the rear baffle is detachably mounted on the rear crossbeam through the guide light axes.

[0007] Preferably, the upper pressure plate includes two upper steel beams arranged in parallel, the upper steel beam at the front end is shorter than the upper steel beam at the rear end, a pair of upper pressure plate fork grooves are fixedly installed between the two upper steel beams, and several lower steel beams are fixedly installed between the two upper steel beams, and several rubber pads are evenly distributed and fixed on the lower surface of each lower steel beam.

[0008] Preferably, the upper pressure plate includes an upper pressure plate beam, a pair of upper pressure plate fork grooves are fixedly arranged in the middle of the upper surface of the upper pressure plate beam, a number of upper pressure plate straight tooth forks are welded to the front side surface of the upper pressure plate beam, and a phenolic cloth board is fixedly arranged on the lower surface of each upper pressure plate straight tooth fork.

[0009] Preferably, the surfaces of the second connecting plate and the movable support plate are both assembled with phenolic cloth plates via nylon countersunk screws.

[0010] Preferably, a pair of fork guide grooves are symmetrically welded to the lower surfaces of the front crossbeam and the rear crossbeam respectively.

[0011] Preferably, the base frame includes columns and connecting plate 1 assembled into one body, the connecting plate 1 is a hollow flat plate, the front length of the connecting plate 1 is smaller than the rear length, the number of the columns is six, three columns are evenly installed on the front and rear sides of the length direction of the connecting plate 1, the upper end of the column passes through the connecting plate 1 and extends upward for a section from the top of the connecting plate 1, the lower end of the column is installed with a walking wheel, and the upper end of the column is processed with a circular ring-shaped support seat.

[0012] A method for using a lung lobe magnetic shielding processing and flipping auxiliary tooling, applied to the aforementioned lung lobe magnetic shielding processing and flipping auxiliary tooling, comprises the following steps: Place the base frame on the ground, place the lower support plate on the base frame, adjust the position of the movable support plate according to the size of the lung lobe magnetic shield and the grounding position, place the lung lobe cavity shell on the movable support plate and the second connecting plate, adjust the position of the arc limit assembly to be close to the outer side of the arc segment of the lung lobe magnetic shield, adjust the position of the side limit assembly to be close to the outer side of the straight segment of the lung lobe magnetic shield, adjust the height of the lifting base plate according to the height of the step at the end of the lung lobe magnetic shield, and detachably install the lifting base plate on the rear crossbeam, install and lock the rear baffle, and stack and press the silicon steel sheets into the interior of the lung lobe cavity shell; After the silicon steel sheets are stacked and pressed, the upper cover is installed; the rear baffle is removed, and the side cover is installed to complete the processing of the magnetic shielding of the lung lobe; Reinstall and tighten the rear baffle to securely secure the lobe magnetic shield. With the help of a forklift and auxiliary tooling, the magnetic shielding of the lung lobe is flipped over.

[0013] Preferably, the upper fork of the forklift lifts the upper pressure plate, the upper fork is subjected to downward pressure, and the sensor reading of the upper fork is negative; the lower fork lifts the lower support plate and the lung lobe magnetic shield on the lower support plate, and the upper fork and the lower fork move toward each other; the upper fork places the upper pressure plate on the lung lobe magnetic shield, the upper fork is not subjected to force and the pressure returns to zero; the upper fork and the lower fork continue to move toward each other to generate a clamping force, and the sensor reading of the upper fork is positive.

[0014] Preferably, during the flipping process of the pulmonary lobe magnetic shield, if the sensor reading of the upper fork changes beyond a set threshold, the current state is maintained and the machine is shut down.

[0015] Beneficial effects of the present invention: The auxiliary tooling and usage method of the present invention are cleverly designed. The auxiliary tooling adopts a movable active support plate, side limit assembly and arc limit assembly, and fixes the lung lobe magnetic shielding through six-point limit without damaging the insulation or shifting. The auxiliary tooling has a simple structure, is easy to operate and has high safety. It can meet the processing and auxiliary flipping of lung lobe magnetic shielding with various radii and various protruding positions, and can effectively improve work efficiency. It can not only be used in the transformer and converter transformer industries, but can also be used for the flipping of semi-circular fine-machined parts, and has a broad application prospect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 This is an exploded schematic diagram of the auxiliary tooling for processing and turning over the lung lobe magnetic shielding according to the first embodiment of the present invention; Figure 2 1 is a schematic diagram of the three-dimensional structure of the base frame according to the first embodiment of the present invention; Figure 3 is a top view of the chassis of the first embodiment of the present invention; Figure 4 1 is a schematic diagram of the three-dimensional structure of the lower support plate of the first embodiment of the present invention; Figure 5 1 is an exploded schematic diagram of the lower support plate of the first embodiment of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the lower support plate frame according to the first embodiment of the present invention from a top view; Figure 7 This is a schematic diagram of the three-dimensional structure of the lower support plate frame according to the first embodiment of the present invention when viewed from above; Figure 8 This is an exploded schematic diagram of the installation of the rear baffle of the first embodiment of the present invention; Figure 9 1 is a schematic diagram of the three-dimensional structure of the arc surface limiting assembly according to the first embodiment of the present invention; Figure 10 1 is a schematic diagram of the three-dimensional structure of the side limit assembly according to the first embodiment of the present invention; Figure 11 1 is an exploded schematic diagram of a movable support plate according to a first embodiment of the present invention; Figure 12 This is a cross-sectional view of the installation and matching of the rear end of the movable support plate according to the first embodiment of the present invention; Figure 13 1 is an exploded schematic diagram of the lifting base plate of the first embodiment of the present invention; Figure 14 This is a partial three-dimensional structural diagram of the lower mounting plate of the first embodiment of the present invention; Figure 15This is a partial three-dimensional structural diagram of the upper lifting plate of the first embodiment of the present invention; Figure 16 1 is a three-dimensional structural diagram of the upper pressing plate 1 of the first embodiment of the present invention; Figure 17 This is a three-dimensional structural diagram of the upper pressing plate 2 of the second embodiment of the present invention; Figure 18 Schematic diagram of flipping using machining and flipping auxiliary tooling in accordance with the third embodiment of the present invention; In the figure, 1 is the magnetic shield of the lung lobe, 2 is the base, 3 is the lower support plate, 4 is the upper pressure plate 1, 5 is the column, 6 is the connecting plate 1, 7 is the walking wheel, 8 is the supporting seat, 9 is the lower support plate frame, 10 is the movable support plate, 11 is the rear side baffle, 12 is the lifting bottom plate, 13 is the arc limit assembly, 14 is the side limit assembly, 15 is the light rod, 16 is the fork guide groove, 17 is the rear crossbeam, 18 is the front crossbeam, 19 is the connecting plate 2, 20 is the reinforcement frame, 21 is the slide groove 1, 22 is the slide groove 2. 23 is a quick steel lock, 24 is the inner surface of the rear baffle, 25 is the bottom edge of the inner surface of the rear baffle, 26 is a reinforcing rib, 27 is an upper lifting plate, 28 is a lower mounting plate, 29 is a screw rod, 30 is a wedge block, 31 is a coupling, 32 is a crank handle, 33 is a nut block, 34 is a lifting slope, 35 is an upper steel beam, 36 is a fork groove of the upper pressure plate, 37 is a lower steel beam, 38 is a rubber pad, 39 is a two-fork groove of the upper pressure plate, 40 is a two-beam upper pressure plate, and 41 is a two-straight-tooth fork of the upper pressure plate. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, but not all of the embodiments. Example 1

[0018] like Figure 1 As shown, a lung lobe magnetic shield processing and flipping auxiliary tooling and a method of use include a base frame 2, a lower support plate 3 and an upper pressure plate 4 placed in sequence from bottom to top, and the lung lobe magnetic shield 1 is placed on the lower support plate 3.

[0019] like Figure 2 、 3As shown, the base frame 2 is placed on the ground, and includes a column 5 and a connecting plate 6 assembled into one body. The connecting plate 6 is a hollow flat plate. The hollow structure not only saves materials but also reduces its own weight. The front length of the connecting plate 6 is smaller than the rear length. The structure of the connecting plate 6 that is shorter in front and longer in the rear matches the lower support plate 3. There are six columns 5. The upper ends of the six columns 5 pass through the connecting plate 6 respectively, and the columns 5 extend upward for a section at the top of the connecting plate 6. The lower end of the column 5 is equipped with a running wheel 7. The running wheel 7 facilitates the overall movement of the base frame 2. The upper end of the column 5 is welded or integrally formed with a circular ring-shaped support seat 8. The diameter of the support seat 8 is larger than the diameter of the column 5. The lower support plate 3 can be placed more stably on the support seat 8. Three columns 5 are evenly installed on the front and rear sides of the connecting plate 6 in the longitudinal direction. The six columns 5 realize six-point support for the connecting plate 6, which is convenient for the lifting and clamping equipment to fork the lower support plate 3 from below; the dispersed six points provide uniform and stable support force for the semicircular structure of the lung lobe magnetic shield 1 on the lower support plate 3.

[0020] like Figure 4-15 As shown, the lower support plate 3 includes a lower support plate frame 9, a movable support plate 10 and a rear side baffle 11, and the movable support plate 10 and the rear side baffle 11 are movably mounted on the lower support plate frame 9. The lower support plate frame 9 includes a front crossbeam 18, a rear crossbeam 17, a second connecting plate 19 and a reinforcement frame 20. A number of weight-reducing holes are provided on the rear crossbeam 17 and the second connecting plate 19. The middle position of the front crossbeam 18 and the rear crossbeam 17 in the longitudinal direction is welded to the two ends of the second connecting plate 19. The left and right sides of the second connecting plate 19 are respectively welded with reinforcement frames 20. The front end of the reinforcement frame 20 is welded to the two ends of the front crossbeam 18, and the rear end of the reinforcement frame 20 is welded to the connecting corner of the rear crossbeam 17 and the second connecting plate 19. The cross section of the rear crossbeam 17 is a U-shaped groove structure, which is used to install the lifting base plate 12. The rear baffle 11 is detachably installed on the rear side of the U-shaped groove structure of the rear crossbeam 17 through the guide light axis. The height of the rear baffle 11 must ensure that it can block the thickest lung lobe magnetic shield 1. The back of the rear baffle 11 is provided with a reinforcing rib 26 with a weight-reducing hole. The cross section of the rear baffle 11 is a special-shaped structure with a bend. The inner surface 24 of the rear baffle and the bottom edge 25 of the rear baffle are integrally formed and vertically adjacent to each other to form a bend. There is a gap between the bottom edge 25 of the rear baffle and the upper surface of the upper lifting plate 27 to avoid interference with the bottom fiberglass board in the lung lobe magnetic shield 1. The inner surface 24 of the rear baffle is insulated. Weight-reducing holes are provided on the inner surface 24 of the rear baffle and the reinforcing rib 26.

[0021] The left and right ends of the front side of the U-shaped groove structure of the rear crossbeam 17 in the longitudinal direction are each provided with a slide groove 21 with an L-shaped cross-section, and the left and right ends of the front crossbeam 18 are each provided with a slide groove 22 with an L-shaped cross-section; six guide light axes are evenly distributed and fixedly welded on the rear surface of the U-shaped groove structure in the longitudinal direction of the rear crossbeam 17, and six guide holes are opened on the rear baffle 11 at positions corresponding to the guide light axes. The guide light axis is a common molded part in this field. The guide light axis includes a light rod 15 and a quick steel lock 23 sleeved on the light rod 15. The light rod 15 passes through the guide holes on the rear baffle 11. Quick steel locks 23 are set on the light rods 15 on both sides of the rear baffle 11. The locking force of a single quick steel lock 23 is 300kg. The detachable installation of the rear baffle 11 is realized through the guide light axis, and the front and rear positions are adjusted by using the rear baffle 11 to firmly press the lung lobe magnetic shield 1. The guide optical axis, combined with the rear baffle 11, ensures a flat end surface for the silicon steel sheet. During flipping, the rear baffle 11 supports the flat surface of the lobe magnetic shield 1. The lower surfaces of the front and rear crossbeams 18 and 17 are machined with raised structures at both ends, corresponding to the upper ends of the columns 5, enabling quick and accurate docking and positioning of the lower support frame 9 and the base frame 2. A pair of fork guide slots 16 are symmetrically welded to the lower surfaces of the front and rear crossbeams 18 and 17, respectively. These four fork guide slots 16 correspond to the forks of the flipper.

[0022] The movable pallet 10 is arranged in pairs on the left and right, respectively located on the outside of the connecting plate 6, including a movable pallet frame of a semi-trapezoidal structure, and the lower surfaces of both ends of the movable pallet frame are integrally formed with movable pallet frame sliders, the size and shape of the movable pallet frame slider at the rear end are matched with the slide groove 1 21 on the rear cross beam 17, and the size and shape of the movable pallet frame slider at the front end are matched with the slide groove 22 on the front cross beam 18, a movable pallet frame limiting rod is provided at the front end of the movable pallet frame slider, the front end of the movable pallet frame limiting rod is connected to the movable pallet frame locking knob, and the front sides of the rear cross beam 17 and the front cross beam 18 are respectively provided with movable pallet frame limiting long grooves that match the movable pallet frame limiting rod. The movable pallet's sliders are inserted into slots 1 and 2, respectively. The movable pallet's limiting rods extend through the movable pallet's limiting slots, enabling the movable pallet 10 to slide horizontally on the rear and front beams 17 and 18. This allows the movable pallet 10 to accommodate different sizes of the lung magnetic shield 1, avoiding any grounding wire outlet holes, and supporting the weight of most silicon steel sheets. The upper surface of the movable pallet 10 is insulated, and the insulation layer is also hollowed out to facilitate threading.

[0023] The arc-shaped limit assembly 13 is arranged in pairs on the left and right, respectively located on the outside of a pair of movable support plates 10, and includes a triangular arc-shaped limit plate. A arc-shaped limit slider is rotatably mounted on the lower portion of a middle corner of the arc-shaped limit plate. The size and shape of the arc-shaped limit slider match the second slide groove 22 on the front crossbeam 18. A arc-shaped limit rod is mounted on the front side of the arc-shaped limit slider. The front end of the arc-shaped limit rod is connected to the arc-shaped limit locking knob. The front side of the front crossbeam 18 is provided with an arc-shaped limit slot that matches the arc-shaped limit rod. Arc-shaped limit wheels are rotatably mounted at the corners of the two ends of the arc-shaped limit plate. The arc-shaped limit slider is inserted into the second slide groove 22, and the arc-shaped limit rod passes through the arc-shaped limit slot, thereby realizing the horizontal sliding of the arc-shaped limit assembly 13 on the front crossbeam 18. The pair of arc-shaped limit wheels fit the outer surface of the arc segment of the lobe magnetic shield 1.

[0024] The side limit assemblies 14 are arranged in pairs, one on each side, and are located outside a pair of movable support plates 10. They include side limit sliders and side limit wheels mounted above the side limit sliders. The size and shape of the side limit sliders match the slot 1 21 on the rear crossbeam 17. A side limit rod is mounted on the front side of the side limit sliders, the front end of which is connected to the side limit locking knob. A side limit slot is defined on the front side of the rear crossbeam 17, which matches the side limit rod. The side limit sliders are inserted into the slot 1 21, and the side limit rod passes through the side limit slot, enabling the side limit assembly 14 to slide horizontally on the rear crossbeam 17. The side limit wheels contact the outer surface of the straight section of the lobe magnetic shield 1.

[0025] The arc surface limiting wheel and the side limiting wheel can be round rollers made of POM material.

[0026] The lifting base plate 12 includes an upper lifting plate 27, a lower mounting plate 28, a plurality of screw rods 29, a plurality of wedge blocks 30, a crank handle 32, and a coupling 31. The lifting base plate 12 and the rear baffle 11 are designed to be separated. The lifting base plate 12 will not affect the removal and installation of the rear baffle 11. The upper lifting plate 27 and the lower mounting plate 28 are rectangular boxes that are arranged in a movable upper and lower snap-fitting manner. The upper surface of the upper lifting plate 27 is insulated, and the inner surfaces of the upper lifting plate 27 and the lower mounting plate 28 are smoothed to facilitate disassembly and cleaning and avoid the accumulation of metal powder. The plurality of screw rods 29 are connected to each other through a coupling 31. The outer ends of the screw rods 29 at both ends are rotatably mounted on the two ends of the lower mounting plate 28 through bearings. The outer end of the screw rod 29 at one end extends outward and is fixedly connected to the crank handle 32. The screw rod 29 is rotated by operating the crank handle 32. Several parallel pairs of wedge blocks 30 are evenly distributed and movably mounted in a rectangular box. A pair of wedge blocks 30 are fixedly connected at both ends to a nut block 33, which is threadedly connected to a screw rod 29. A lifting ramp 34 is integrally formed on the lower surface of the upper lifting plate 27. The position and shape of the lifting ramp 34 match the wedge blocks 30, and the adjacent surfaces of the lifting ramp 34 and the wedge blocks 30 are smoothed to reduce friction. The straight end surface of the lung lobe magnetic shield 1 has a stepped structure at the bottom. To accommodate the different sizes of the stepped structure, an adjustable lifting base plate 12 is designed. By rotating the screw rod 29, the wedge blocks 30 are driven horizontally. The lifting ramp 34, which corresponds to the wedge blocks 30, can achieve the overall lifting of the upper lifting plate 27. The lifting base plate 12 has a built-in leveling function and can be used continuously after leveling once, greatly improving production efficiency. The design of the lifting base plate 12 is suitable for the stepped structure of all sizes of lung lobe magnetic shields 1.

[0027] like Figure 16 As shown, the upper pressure plate 4 comprises an upper steel beam 35, an upper pressure plate fork groove 36, a lower steel beam 37, and rubber pads 38. Two upper steel beams 35 are arranged in parallel, with the front upper steel beam 35 being shorter than the rear upper steel beam 35. A pair of upper pressure plate fork grooves 36 are bolted (or welded) between the upper surfaces of the two upper steel beams 35. Several lower steel beams 37 are bolted between the upper surfaces of the two upper steel beams 35. Several rubber pads 38 are uniformly bonded (or bolted) to the lower surface of each lower steel beam 37, which serve as insulating and anti-slip contacts. The number and tilt of the lower steel beams 37 can be flexibly adjusted based on their contact position with the lobe magnetic shield 1. Long mounting slots are provided on the left and right sides of the upper steel beams 35 along their length to facilitate adjustment of the mounting position of the lower steel beams 37. The upper steel beam 35 and the lower steel beam 37 can be made of a "X" shaped steel plate. When installed, the opening of the upper steel beam 35 faces downward and the opening of the lower steel beam 37 faces upward. The upper pressure plate 4 of the comb-shaped structure is light and suitable for the special shape of the lobe magnetic shield 1.

[0028] Components that come into contact with the lobe magnetic shield (e.g., connecting plate 2 19 and movable support plate 10) are fixed with phenolic cloth panels to prevent scratches on the lobe magnetic shield. During assembly, the lower middle surface of the cavity housing rests against the phenolic cloth panels. The panels are installed using nylon countersunk screws, which should be sunk 2mm into the surface to prevent damage to the lobe magnetic shield. Example 2

[0029] like Figure 17 As shown, the second embodiment of the present invention provides a structural design for an upper pressing plate 2 that differs from the first upper pressing plate 4. The upper pressing plate 2 includes an upper pressing plate second fork groove 39, an upper pressing plate second crossbeam 40, an upper pressing plate second straight tine fork 41, and a second rubber pad. A pair of upper pressing plate second fork grooves 39 are welded to the upper surface of the upper pressing plate second crossbeam 40, and a plurality of upper pressing plate second straight tine forks 41 are welded to the front surface of the upper pressing plate second crossbeam 40. A phenolic cloth sheet is bonded (or bolted) to the lower surface of each upper pressing plate second straight tine fork 41. Example 3

[0030] like Figure 18 As shown, the auxiliary tooling for processing and flipping the lung lobe magnetic shielding and the method of use described in the first and second embodiments are as follows: Place the base frame 2 on the ground. Use a forklift to place the lower support plate 3 on the base frame 2. Adjust the position of the movable support plate 10 according to the size of the lung magnetic shield 1. Place the lung-shaped cavity shell on the movable support plate 10 and connecting plate 2 19. Adjust the arc limit assembly 13 to fit closely against the outer side of the arc segment of the lung magnetic shield 1. Adjust the side limit assembly 14 to fit closely against the outer side of the straight segment of the lung magnetic shield 1. Adjust the lifting base plate 12 to the appropriate height and bolt it (removably) into the U-shaped groove structure of the rear crossbeam 17. Install and tighten the rear baffle 11 via the guide light shaft. Lay the silicon steel sheets into the interior of the lung-shaped cavity shell. After the silicon steel sheets are placed, glue and install the upper cover plate. Remove the rear baffle 11 via the guide light shaft and glue and install the side cover plate. This completes the lung magnetic shield 1. Finally, install and tighten the rear baffle 11 again via the guide light shaft to securely secure the lung magnetic shield 1.

[0031] With the help of existing forklifts and auxiliary tools, the lobe magnetic shield 1 can be flipped over. The details are as follows: The upper fork of the forklift is equipped with a pull / pressure sensor. In the flip preparation action, the upper fork lifts the upper pressure plate 1 4 or the upper pressure plate 2, the upper fork is subjected to downward pressure, and the sensor reading is negative; the forklift moves to the base frame 2, the lower fork lifts the lower support plate 3 and the lung lobe magnetic shield 1 on the lower support plate 3, and the upper fork and the lower fork move towards each other and align; the forklift moves to place the upper pressure plate 1 4 or the upper pressure plate 2 on the lung lobe magnetic shield 1, and relies on the weight of the upper pressure plate 1 4 or the upper pressure plate 2 to apply a certain pressure to the lung lobe magnetic shield 1. The upper fork is not subjected to force, and the pressure returns to zero; the upper fork and the lower fork continue to move towards each other to generate a clamping force (the magnitude of the clamping force is set according to the bearing capacity of the lung lobe magnetic shield 1), and the pressure sensor reading is positive; The forklift controls the rotation of the upper and lower forks. During the upward flipping and horizontal rotation of the lobe magnetic shield 1, the pressure applied by the upper fork remains unchanged. If the sensor reading changes rapidly (the threshold can be set), the current state is maintained and the machine is shut down immediately. During the downward flipping process, the upper fork becomes the lower fork, and the pressure gradually increases. If the pressure change rate changes drastically, the current state is maintained and the machine is shut down immediately.

[0032] The third embodiment of the present invention is applied to the processing and auxiliary flipping of all types of lobe magnetic shields 1, such as power transformers and converter transformers, and can realize the stacking and flipping of lobe magnetic shields 1 with different radii and thicknesses. The ultimate technical parameters of the lobe magnetic shield 1 are as follows: Maximum dimensions of the lobe magnetic shield 1 (mm): 140*1250*2750; Maximum weight of lobe magnetic shield 1 (t): 1.3; Minimum size of lobe magnetic shield 1 (mm): 108*760*1970; Minimum weight of lobe magnetic shield 1 (t): 0.5.

[0033] In the embodiments of the present invention, technical features not described in detail are all existing technologies or conventional technical means and will not be described in detail here.

[0034] Finally, it should be noted that the above embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them, and the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any person skilled in the art can modify or easily think of changes to the technical solutions described in the above embodiments within the technical scope disclosed by the present invention, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included in the protection scope of the present invention.

Claims

1. A tool for processing and turning over the magnetic shield of the lung lobe, comprising a base frame, a lower support plate and an upper pressing plate placed in sequence from bottom to top, characterized in that: The lower support plate includes a lower support plate frame, a movable support plate and a rear side baffle, the lower support plate frame includes a front crossbeam, a rear crossbeam and a connecting plate 2, the middle position of the front crossbeam and the rear crossbeam is welded to the two ends of the connecting plate 2, the rear side baffle is detachably installed on the rear side of the rear crossbeam, and movable support plates are movably installed on both sides of the connecting plate 2, and the front and rear ends of the movable support plate are respectively slidably connected to the front crossbeam and the rear crossbeam, and a side limit assembly is movably installed on the outer side of the rear end of the movable support plate, a pair of side limit assemblies are slidably connected to the rear crossbeam, and the side limit assembly includes a side limit slider and a side limit wheel installed above the side limit slider, a side limit rod is installed on the front side of the side limit slider, and the front end of the side limit rod is connected to the side limit locking knob; an arc surface limit assembly is movably installed on the outer side of the front end of the movable support plate, and a pair of arc surface limit assemblies are slidably connected to the front crossbeam, and the arc surface limit assembly includes The triangular arc limit plate, the lower part of the middle corner of the arc limit plate is rotatably installed with the arc limit slider, the front side of the arc limit slider is installed with an arc limit rod, and the front end of the arc limit rod is connected to the arc limit locking knob; a lifting base plate is fixedly installed in the length direction of the rear crossbeam, and the lifting base plate includes an upper lifting plate and a lower mounting plate that are movably connected to form a rectangular box body, and a number of screw rods are connected by a coupling. The outer end portions of the screw rods at both ends are rotatably installed at the two ends of the lower mounting plate, and the outer end portion of the screw rod at one end extends outward and is fixedly connected to the crank handle, and a number of parallel pairs of wedge blocks are evenly distributed in the rectangular box body, and a pair of wedge blocks are fixedly connected between the two ends of the wedge block. The nut block is connected to the screw rod threadedly, and the lifting slope is integrally formed on the lower surface of the upper lifting plate, and the position and shape of the lifting slope match the wedge block.

2. The auxiliary tooling for magnetic shielding processing and turning of lung lobes according to claim 1 is characterized in that: Six guide light axes are evenly welded on the rear surface of the rear crossbeam in the length direction, and six guide holes are opened on the rear baffle plate at positions corresponding to the guide light axes. The rear baffle plate is detachably mounted on the rear crossbeam through the guide light axes.

3. The auxiliary tooling for processing and turning the magnetic shield of lung lobes according to claim 2 is characterized in that: The upper pressure plate includes two upper steel beams arranged in parallel, the upper steel beam at the front end is shorter than the upper steel beam at the rear end, a pair of upper pressure plate fork grooves are fixedly installed between the two upper steel beams, and several lower steel beams are fixedly installed between the two upper steel beams, and several rubber pads are evenly distributed and fixed on the lower surface of each lower steel beam.

4. The auxiliary tooling for lung lobe magnetic shielding processing and flipping according to claim 2 is characterized in that: The upper pressure plate includes an upper pressure plate beam, a pair of upper pressure plate fork grooves fixedly arranged in the middle of the upper surface of the upper pressure plate beam, a plurality of upper pressure plate straight tooth forks welded to the front side surface of the upper pressure plate beam, and a phenolic cloth plate fixedly arranged on the lower surface of each upper pressure plate straight tooth fork.

5. The auxiliary tooling for lung lobe magnetic shielding processing and flipping according to claim 2, characterized in that: The surfaces of the second connecting plate and the movable supporting plate are both assembled with phenolic cloth plates through nylon countersunk screws.

6. The auxiliary tooling for processing and turning the magnetic shield of lung lobes according to claim 2, characterized in that: A pair of fork guide grooves are symmetrically welded on the lower surfaces of the front crossbeam and the rear crossbeam.

7. The auxiliary tool for processing and turning the magnetic shield of lung lobes according to claim 2, characterized in that: The base frame includes columns and connecting plate 1 assembled into one body, the connecting plate 1 is a hollow flat plate, the front side length of the connecting plate 1 is smaller than the rear side length, the number of columns is six, and three columns are evenly installed on the front and rear sides of the length direction of the connecting plate 1. The upper end of the column passes through the connecting plate 1 and extends upward for a section from the top of the connecting plate 1. The lower end of the column is installed with a walking wheel, and the upper end of the column is processed with a circular ring-shaped support seat.

8. A method for using a lung lobe magnetic shielding processing and flipping auxiliary tooling, characterized in that: The auxiliary tooling for processing and flipping the magnetic shield of the lung lobe as claimed in claim 2 comprises the following steps: Place the base frame on the ground, place the lower support plate on the base frame, adjust the position of the movable support plate according to the size of the lung lobe magnetic shield and the grounding position, place the lung lobe cavity shell on the movable support plate and the second connecting plate, adjust the position of the arc limit assembly to be close to the outer side of the arc segment of the lung lobe magnetic shield, adjust the position of the side limit assembly to be close to the outer side of the straight segment of the lung lobe magnetic shield, adjust the height of the lifting base plate according to the height of the step at the end of the lung lobe magnetic shield, and detachably install the lifting base plate on the rear crossbeam, install and lock the rear baffle, and stack and press the silicon steel sheets into the interior of the lung lobe cavity shell; After the silicon steel sheets are stacked and pressed, the upper cover is installed; the rear baffle is removed, and the side cover is installed to complete the processing of the magnetic shielding of the lung lobe; Reinstall and tighten the rear baffle to securely secure the lobe magnetic shield. With the help of a forklift and auxiliary tooling, the magnetic shielding of the lung lobe is flipped over.

9. The method for using the auxiliary tool for processing and turning over the magnetic shield of the lung lobe according to claim 8, characterized in that: The upper fork of the forklift lifts the upper pressure plate, and the upper fork is subjected to downward pressure, and the sensor reading of the upper fork is negative; the lower fork lifts the lower support plate and the lung lobe magnetic shield on the lower support plate, and the upper fork and the lower fork move toward each other; the upper fork places the upper pressure plate on the lung lobe magnetic shield, and the upper fork is not subjected to force and the pressure returns to zero; the upper fork and the lower fork continue to move toward each other to generate clamping force, and the sensor reading of the upper fork is positive.

10. The method for using the auxiliary tool for processing and turning over the magnetic shield of the lung lobe according to claim 9, characterized in that: During the flipping process of the lung lobe magnetic shield, if the sensor reading of the upper fork changes beyond the set threshold, the current state will be maintained and the machine will be shut down.

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