Disassembling and assembling equipment for overhauling large synchronous machine and disassembling and assembling method of disassembling and assembling equipment

Abstract

The invention belongs to the technical field of mine equipment maintenance, and particularly relates to dismounting and mounting equipment for large synchronous machine maintenance and a dismounting and mounting method of the dismounting and mounting equipment for large synchronous machine maintenance. The right end of a rotor supporting left base is connected with one end of a stator supporting base, and the other end of the stator supporting base is connected with the left end of a rotor supporting right base; the front end and the rear end of the upper portion of the stator supporting base are connected with the stator supporting base through bolts respectively, left sliding rails and right sliding rails are fixed to the front end and the rear end of the upper portion of the left rotor supporting base and the front end and the rear end of the upper portion of the right rotor supporting base respectively, the two left sliding rails are connected with the left rotor supporting base, and the two right sliding rails are connected with the right rotor supporting base. Cuboid holes are formed in the rotor left supporting seat and the rotor right supporting seat from the top to the middle, a jack is placed in the cuboid hole in the middle, a rotor supporting block is slidably mounted in the cuboid hole in the top, and visual scales and infrared detectors are arranged in front of and behind the rotor supporting block. According to the device and method, manpower and intelligence are combined, the labor intensity of workers is reduced, the dangerous intensity is reduced, and the disassembly and assembly time is shortened.

Description

Technical Field

[0001] The invention belongs to the technical field of mine equipment maintenance, and in particular relates to a disassembly and assembly device for maintenance of a large synchronous machine and a disassembly and assembly method thereof. Background Art

[0002] After being drilled, blasted, shoveled, transported, crushed and screened, the ore enters the large mill for grinding. The large mill is generally driven by two large synchronous machines. The two large synchronous machines drive the left and right small gears, which jointly drive the large gear. The large gear drives the large mill cylinder to operate. The large synchronous machine includes a rotor and a stator. After a long period of use, it needs to be overhauled. If the stator coil is grounded, burned, or sparked, or the rotor winding (coil) is grounded, burned, or sparked, resulting in a large synchronous machine failure, the large synchronous machine needs to be disassembled and the large synchronous machine rotor is pulled out from the stator. This is defined as core pulling. Then the large synchronous machine is overhauled, that is, the stator coil, rotor winding (coil) and bearing replacement and other overhaul operations are carried out; after the overhaul is completed, the stator and rotor of the large synchronous machine need to be assembled, which is defined as core entry; in the process of core pulling and core entry, due to the small gap between the stator and rotor of the large synchronous machine, large size, heavy weight, high precision and difficulty in lifting, the insulation performance of the stator coil and rotor winding (coil) will be damaged if not handled with care, resulting in a decrease in the insulation performance of the stator coil and rotor winding (coil). Core pulling and core entry operations have always been a technical difficulty in the maintenance of large synchronous machines.

[0003] Currently, two overhead cranes are used for core pulling and core insertion operations on large synchronous machines. Workers are required to use wire ropes to tie the stators and rotors of large synchronous machines for disassembly and assembly. The overhead cranes have a large lifting stroke and are difficult to center. Any slight asynchrony in the operation of the two overhead cranes will cause serious damage to the insulation performance of the stator and rotor windings (coils) of the large synchronous machines. At the same time, there are major safety hazards such as crooked lifting of the overhead cranes, asynchronous lifting, high-altitude operations and overloaded lifting loads. The alignment, disassembly and assembly of workers are cumbersome and time-consuming, with high labor intensity, high risk and low maintenance efficiency. Summary of the Invention

[0004] The purpose of the present invention is to provide a disassembly and assembly device and a disassembly and assembly method for the maintenance of large synchronous machines, so as to solve the problems of large lifting stroke of the overhead crane, difficulty in centering, serious damage to the insulation performance of the stator and rotor windings (coils) of the large synchronous machine due to slight asynchrony in the operation of the two overhead cranes, tedious and time-consuming centering, assembly and disassembly for workers, high labor intensity, high risk and low maintenance efficiency.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A disassembly and assembly equipment for overhauling a large synchronous machine comprises a stator support base, a rotor support left base and a rotor support right base, the right end of the rotor support left base is connected to one end of the stator support base, and the other end of the stator support base is connected to the left end of the rotor support right base, multiple groups of base plates are welded on the left and right sides below the stator support base, a bolt hole is opened in the center of the base plate, a top screw is installed in the bolt hole, and the front and rear ends above the stator support base are respectively connected to the stator support seat by bolts, multiple groups of base plates are welded front and back below the rotor support left base and the rotor support right base, a bolt hole is opened in the center of the base plate, a top screw is installed in the bolt hole, the front and rear ends above the rotor support left base are fixed with a left slide rail, and the front and rear ends above the rotor support right base are fixed with a right slide rail Rails, each left slide rail and right slide rail are slidably connected to two sliders, the top ends of the four sliders on the two left slide rails are connected to the same rotor left support seat by bolts, and the top ends of the four sliders on the two right slide rails are connected to the same rotor right support seat by bolts, and rectangular holes are provided from the top to the middle of the left rotor support seat and the right rotor support seat, a jack is placed in the rectangular hole in the middle, the front and top surfaces are open, and the other surfaces are closed, and the rotor support block is slidably installed in the rectangular hole on the top, and the rotor support block can slide up and down in the left rotor support seat and the right rotor support seat. The upper surface of the rotor support block is semicircular, and the top end of the rotor support block is higher than the left rotor support seat and the right rotor support seat. Visual scales and infrared detectors are provided at the front and back of the rotor support block.

[0006] Preferably, the rotor support left base and the stator support base, as well as the stator support base and the rotor support right base are connected through a connecting unit, and the connecting unit includes a connecting boss and a connecting recess, the connecting boss is a "convex" type, and the connecting recess is a "concave" type, the connecting boss and the connecting recess are embedded in a clearance fit, and the two ends are fixed by bolts.

[0007] Preferably, the stator support base, the left rotor support base and the right rotor support base all include an upper base plate and a lower base plate, and hollow square steel is welded between the upper base plate and the lower base plate.

[0008] Preferably, the cross section of the stator support seat is an isosceles trapezoid, comprising an upper base plate and a lower base plate, a frame is welded between the upper base plate and the lower base plate, and inclined plates are welded on both sides.

[0009] Preferably, the two sides of the left slider are symmetrical along the center line of the left slide rail, and the two sides of the right slider are symmetrical along the center line of the right slide rail. The cross-sections of the left slider and the right slider are both polygonal, and the inner corners of the bottom end of the left slider abut against the left slide rail, and the inner corners of the bottom end of the right slider abut against the right slide rail.

[0010] Preferably, the left rotor support seat and the right rotor support seat are both irregular structures, which are symmetrical in the vertical direction and are composed of a bottom cuboid, a right-angled trapezoid and a top cuboid from bottom to top. The bottom surface of the right-angled trapezoid is the same as the top surface of the bottom cuboid, and the length and width of the bottom surface of the top cuboid are less than or equal to the length and width of the corresponding top surface of the right-angled trapezoid.

[0011] Preferably, a gasket is provided between the left base of the rotor support and the left slide rail, and a gasket is provided between the right base of the rotor support and the right slide rail.

[0012] Preferably, limit blocks are welded on both sides of the left slide rail and the right slide rail, lubricating grease is added between the left slide rail and the left slider, and lubricating grease is added between the right slide rail and the right slider.

[0013] A disassembly and assembly method for overhauling a large synchronous machine based on the above disassembly and assembly equipment is described in detail as follows: S1: When a large synchronous machine's stator coil is grounded, burned, or sparked, or a rotor winding coil is grounded, burned, or sparked, or a large synchronous machine has been used for 8 to 10 years and needs to be overhauled and disassembled, the large synchronous machine rotor winding is pulled out from the cylindrical center hole of the stator. The disassembly steps are as follows: (1) Place a foundation pad under each set of top screws of the rotor support left base, the rotor support right base and the stator support base, and level the rotor support left base and the stator support base through the top screws and the foundation pad, and level the rotor support right base and the stator support base through the top screws and the foundation pad, so that the stator support base, the rotor support left base and the rotor support right base are on the same horizontal plane; (2) Measure and adjust the levelness of the stator support seat, the left rotor support base and the right rotor support base to make the levelness less than 0.1mm; manually push the left rotor support seat to the leftmost position of the left rotor support base, measure and adjust the levelness of the left rotor support seat to make the levelness less than 0.1mm; push the left rotor support seat to the rightmost position close to the position of the large synchronous machine stator, push the right rotor support seat to the rightmost position of the right rotor support base, measure and adjust the levelness of the right rotor support seat to make the levelness less than 0.1mm, and push the right rotor support seat to the leftmost position close to the position of the large synchronous machine stator; (3) Remove the four anchor bolts of the large synchronous machine stator, use the crane to lift the large synchronous machine to be overhauled (damaged) as a whole through the wire rope and place it on the stator support seat, and align the left and right main shafts of the rotor with the left and right rotor support seats respectively; adjust the left and right positions of the right and left rotor support seats and the up and down positions of the jack so that the rotor winding (coil) is located in the center of the stator cylindrical center hole, and the distance between the two sides of the rotor winding (coil) and the two sides of the stator cylindrical center hole is equal, that is, the horizontal center and vertical center of the rotor winding (coil) and the stator cylindrical center hole coincide, ensuring that the left and right and up and down gaps between the stator cylindrical center hole and the rotor winding (coil) are uniform; then lift the large synchronous machine as a whole and place it on the stator support seat, and place the left and right main shafts of the rotor on the left and right rotor support seats respectively. The crane is gradually loosened, and then the lifting wire rope is removed and the crane is removed; (4) Adjust the height of the jack in the left rotor support seat, align it with the visual scale and infrared detector in front and behind the left rotor support block, automatically detect and clearly observe the rising and falling height of the left rotor support block and the center position of the rotor spindle, automatically detect and accurately measure the up and down sliding distance of the left rotor support block in the left rotor support seat, so as to facilitate the adjustment of the center height of the rotor spindle above the left rotor support block, so that the left rotor support block is raised or lowered, and finally the center of the left rotor spindle is consistent with the left center of the stator; adjust the height of the jack in the right rotor support seat, align it with the visual scale and infrared detector in front and behind the right rotor support block The instrument can automatically detect and clearly observe the rising and falling height of the rotor right support block and the center position of the rotor spindle, automatically detect and accurately measure the up and down sliding distance of the rotor right support block in the rotor right support seat, and facilitate the adjustment of the center height of the rotor spindle above the rotor right support block, so as to raise or lower the rotor right support block, and finally make the center of the rotor right spindle consistent with the right center of the stator; at the same time, slowly push the rotor right support seat and the rotor left support seat to the right, so that the winding on the rotor spindle gradually and slowly exits the outside of the cylindrical center hole of the large synchronous machine stator, and finally make the winding on the rotor spindle completely exit the cylindrical center hole of the stator; (5) Use a crane to tie the main shafts on both sides of the rotor winding (coil) through a wire rope and lift the large synchronous machine rotor. Lift the damaged large synchronous machine rotor right shaft on the rotor right support block semicircle on the rotor right support seat, so that the rotor right support block bears 70% to 100% of the rotor weight. Gradually lift the crane wire rope to gradually reduce the force on the rotor right support block on the rotor right support seat to 10% to 30% of the rotor weight. Then slowly push the rotor right support seat to the right away from the large synchronous machine stator, so that the rotor right support block on the rotor right support seat Reduce the force on the support block to 0-30% of the rotor weight; slowly push the right support seat of the rotor to the right, slowly withdraw the rotor main shaft from the center hole of the large synchronous machine stator, and gradually lift the damaged large synchronous machine rotor, gradually separate the left end of the rotor main shaft from the semicircle of the rotor left support block on the left support seat of the rotor; gradually raise the crane wire rope to reduce the weight of the rotor supported by the semicircle of the left and right support blocks to 0%-10%, and finally to 0% of the rotor weight, then slowly lift the rotor and move the crane to move the rotor to the repair workshop; (6) Push the right support seat of the rotor to the rightmost position, and push the left support seat of the rotor to the leftmost position. At this point, the disassembly (core pulling) of the entire large synchronous machine is completed; S2: After the large synchronous machine is overhauled, that is, after the stator coil (part) or rotor winding (part) is replaced, the stator and rotor of the large synchronous machine need to be assembled. The specific steps are as follows: (1) Place a foundation pad under each set of top screws of the rotor support left base, the rotor support right base and the stator support base, and level the rotor support left base and the stator support base through the top screws and the foundation pad, and level the rotor support right base and the stator support base through the top screws and the foundation pad, so that the stator support base, the rotor support left base and the rotor support right base are on the same horizontal plane; (2) Measure and adjust the levelness of the stator support seat, the left rotor support base, and the right rotor support base to make them level less than 0.1 mm. Use an overhead crane to hoist the overhauled large synchronous machine stator onto the front and rear sets of stator support seats through a steel wire rope, and fix them to the stator support seats with hexagonal bolts. (3) Manually push the left rotor support to the leftmost position of the left rotor support base, measure the horizontality of the left rotor support, adjust it to make the horizontality less than 0.1mm, push it to the rightmost position close to the large synchronous machine stator position, push the right rotor support to the rightmost position of the right rotor support base, measure the horizontality of the right rotor support, adjust it to make the horizontality less than 0.1mm, use the crane to hoist the overhauled large synchronous machine rotor right shaft through the wire rope and place it on the semicircle of the rotor right support block on the rotor right support base, so that the rotor right support block bears 10% of the rotor weight, and gradually lower the crane wire rope to make the rotor right support on the rotor right support base The block is subjected to a force of 10-20% of the rotor weight. The rotor right support seat is slowly pushed manually to a position close to the large synchronous machine stator, so that the rotor right support block on the rotor right support seat is subjected to a force of 20-30% of the rotor weight; the rotor right support seat is slowly pushed, and the rotor main shaft is slowly pushed into the center hole of the large synchronous machine stator, and the left end of the rotor main shaft is placed on the semicircle of the rotor left support block on the rotor left support seat. The crane wire rope is gradually lowered so that the semicircle of the rotor left support block and the semicircle of the rotor right support block bear 30%-70% of the rotor weight, and finally bear 100% of the rotor weight. The lifting wire rope is removed and the crane is removed; (4) Adjust the height of the jack in the left rotor support seat, align it with the visual scale and infrared detector in front and behind the left rotor support block, automatically detect and clearly observe the rising and falling height of the left rotor support block and the center position of the rotor spindle, automatically detect and accurately measure the sliding distance of the left rotor support block in the left rotor support seat, so as to facilitate the adjustment of the center height of the rotor spindle above the left rotor support block. Raise or lower the left rotor support block, and finally make the center of the left rotor spindle consistent with or overlap with the left center of the stator; adjust the height of the jack in the right rotor support seat, align the visual scale and infrared detector in front and behind the right rotor support block, automatically detect and clearly observe the rising and falling height of the right rotor support block and the center position of the rotor spindle, automatically detect and accurately measure the up and down sliding distance of the right rotor support block in the right rotor support seat, so as to facilitate the adjustment of the center height of the rotor spindle above the right rotor support block, raise or lower the right rotor support block, and finally make the center of the right rotor spindle consistent with the right center of the stator; simultaneously push the right rotor support seat and the left rotor support seat to the left, so that the rotor spindle gradually and slowly enters the cylindrical center hole of the stator of the large synchronous machine, and slowly makes the winding on the rotor spindle completely enter the cylindrical center hole of the stator and be located in the center of the cylindrical center hole of the stator; (5) Adjust the left and right positions of the rotor right support and the left support, as well as the up and down positions of the jack, so that the rotor winding (coil) is located in the center of the stator cylindrical center hole, and the distances between the two sides of the rotor winding (coil) and the two sides of the stator cylindrical center hole are equal, that is, the horizontal and vertical centers of the rotor winding (coil) and the stator cylindrical center hole coincide, ensuring that the left and right and up and down gaps between the stator cylindrical center hole and the rotor winding (coil) are uniform. At this point, the entire large synchronous machine assembly (core insertion) work is completed.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) Use the bottom plate and top screw to level the left rotor support base and the stator support base, as well as the right rotor support base and the stator support base, to improve the horizontality of the left rotor support base and the stator support base, as well as the right rotor support base, and to improve the accuracy of the alignment of the rotor and the stator; (2) The left rotor support seat and the right rotor support seat are moved by the slide rail in combination with the slider, which is easy to operate. At the same time, the slider has a polygonal cross-section and can withstand a large tipping moment to prevent the left rotor support seat, the right rotor support seat and the slider from tipping over; (3) The height of the rotor support block is adjusted by the jack, and the rising and falling height of the rotor support block and the center position of the rotor spindle are detected and observed by combining a visual scale and an infrared detector to improve the efficiency of assembly and disassembly; (4) The various structures of the device are interrelated, coordinated and interact with each other to achieve continuous and precise assembly and disassembly, stabilize the assembly and disassembly speed, accurately meet the assembly and disassembly requirements, and solve the problems of high risk factor of high-altitude operation, high labor intensity, crooked lifting and low maintenance efficiency; (5) This method is simple to operate and optimizes and improves the traditional disassembly and assembly sequence. After the rotor is placed, the height and bearing capacity of the rotor support block are adjusted, and the left rotor support seat and the right rotor support seat are slowly moved to center and remove the rotor and stator. The combination of manual and intelligent methods avoids the problems of large overhead crane lifting stroke, difficulty in centering, and slight missynchronization of the two overhead cranes, which may cause serious damage to the insulation performance of the stator and rotor windings (coils) of large synchronous machines. It reduces unnecessary links, reduces the labor intensity and risk intensity of workers, shortens the disassembly and assembly time, improves the overall maintenance efficiency, and protects the insulation layer and key parts of the motor at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the structure of an embodiment of the present invention; Figure 2 Schematic diagram of the connection relationship between the stator support base and the stator support seat in an embodiment of the present invention; Figure 3 Schematic diagram of the structure of the stator support seat in an embodiment of the present invention; Figure 4 This is a schematic structural diagram of the rotor right support seat in an embodiment of the present invention; Figure 5 Schematic diagram of the structure of the left slider or the right slider in an embodiment of the present invention; Figure 6 This is a structural diagram of a connecting unit in an embodiment of the present invention; Figure 7Schematic diagram of the connection between the stator support base and the stator during disassembly and renovation during maintenance in an embodiment of the present invention; Figure 8 This is a front view of the disassembly and renovation process during maintenance in an embodiment of the present invention; Figure 9 This is a top view of the disassembly and decoration process during maintenance in an embodiment of the present invention.

[0016] Explanation of the accompanying symbols: 1. stator support base; 101. first upper base plate; 102. first lower base plate; 2. stator support base; 201. second upper base plate; 202. second lower base plate; 203. skeleton; 204. inclined plate; 3. stator; 4. rotor; 5. rotor left support block; 6. left screw jack; 7. rotor left support base; 701. bottom rectangular parallelepiped; 702. right-angled trapezoid; 703. top rectangular parallelepiped; 8. left slide rail; 9. rotor support left base; 10. top screw; 11. positioning pin; 12. connecting unit; 121. connecting boss; 122. connecting recess; 13. rotor right support block; 14. right screw jack; 15. rotor right support base; 16. right slide rail; 17. rotor support right base; 18. left slider; 19. right slider; 20. bottom plate; 21. hollow square steel. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0018] The stator 3 of the large synchronous machine has the dimensions of 4115mm in length, 1550mm in width and 4226mm in height respectively. There is a cylindrical hole in the middle of the stator 3 with the dimensions of Φ2650×1550mm. There are shell and anchor bolt holes on the outside. The cylindrical hole in the middle of the stator 3 is used to install the large synchronous machine rotor 4. The rotor has a cylindrical shape with the dimensions of Φ2650×5463.5mm. The middle is the rotor shaft with the dimensions of (Φ355~Φ585)×5463.5mm. The rotor winding (coil) is assembled in the middle of the rotor shaft with the cylindrical shape and the dimensions of Φ2650×900mm. The following disassembly and assembly equipment and methods are provided for the maintenance of this large synchronous machine.

[0019] like Figure 1As shown, a disassembly and assembly device for overhauling a large synchronous machine includes a stator support base 1, a rotor support left base 9, and a rotor support right base 17. The stator support base 1, the rotor support left base 9, and the rotor support right base 17 all include a first upper base plate 101 and a first lower base plate 102. A hollow square steel 21 is welded between the first upper base plate 101 and the first lower base plate 102. The stator support base 1 is a rectangular parallelepiped with an outer dimension of 4960 mm, 1750 mm, and 300 mm in length, width, and height, respectively. The first upper base plate and the second lower base plate are both 25 mm steel plates. The length, width and height of the hollow square steel 21 are 200mm, 200mm and 9.0mm respectively. The spacing of the hollow square steel 21 is 1500mm. The welding method is continuous welding and the welding height is greater than 10mm. In order to reduce weight and cost, the stator support base 1 is hollow in the middle and the width of the base around it is 300mm. The left base 9 of the rotor support is a rectangular parallelepiped with an outer dimension of 4035mm, 1680mm and 270mm respectively. The first upper base plate and the second lower base plate are both 20mm-30mm steel plates. The hollow square steel 21 is The length, width and height are 200mm, 200mm and 9.0mm respectively, and the spacing between the hollow square steel 21 is 1000-2000mm; the rotor support right base 17 is a rectangular parallelepiped, and the length, width and height of the outer dimensions are 6885mm, 1680mm and 270mm respectively. The first upper base plate and the second lower base plate are both 20mm-30mm steel plates. The length, width and height of the hollow square steel 21 are 200mm, 200mm and 9.0mm respectively, and the spacing between the hollow square steel 21 is 1000-2000mm; the right end of the rotor support left base 9 is connected to the stator support One end of the support base 1 is connected, and the other end of the stator support base 1 is connected to the left end of the rotor support right base 17. Four groups of base plates 20 are welded on the left and right sides of the stator support base 1. The length, width and height of the base plate 20 are 300mm, 300mm and 30mm respectively. A bolt hole is opened in the center of the base plate 20, and a top screw 10 is installed in the bolt hole; the supporting strength of the stator support base, the rotor support left base and the rotor support right base is improved by hollow square steel, and the stability of the overall structure is enhanced; the horizontality of the stator support base is adjusted by the top screw and the base plate to improve the accuracy of core entry and core pulling.

[0020] like Figure 2-3 As shown, the front and rear ends of the upper portion of the stator support base 1 are respectively connected to the stator support base 2 by bolts; the cross-section of the stator support base 2 is an isosceles trapezoid, comprising a second upper base plate 201 and a second lower base plate 202, a frame 203 welded between the second upper base plate and the second lower base plate, and inclined plates 204 welded on both sides; the second upper base plate 201, the second lower base plate 202 and the frame 203 of the stator support base 2 are all 25 mm steel plates; the stator support base utilizes the stability of the isosceles trapezoidal structure and combines internal frame welding to enhance the strength of the stator support base.

[0021] like Figure 1-4 As shown, four groups of bottom plates 20 are welded before and after below the left base 9 of the rotor support, and the length, width and height of the bottom plate 20 are 300mm, 300mm and 30mm respectively. A bolt hole is opened in the center of the bottom plate 20, and a top screw 10 is installed in the bolt hole. Five groups of bottom plates 20 are welded before and after below the right base 17 of the rotor support, and the length, width and height of the bottom plate 20 are 300mm, 300mm and 30mm respectively. A bolt hole is opened in the center of the bottom plate 20, and a top screw 10 is installed in the bolt hole. The left slide rail 8 is fixed at both ends above the left base 9 of the rotor support, and the width and height of the left slide rail 8 are 170mm and 90mm respectively, the length is 4035mm, and the spacing is 1400mm. The right slide rail is fixed at both ends above the right base 17 of the rotor support 16. A gasket is provided between the rotor support left base 9 and the left slide rail 8, and a gasket is provided between the rotor support right base 17 and the right slide rail 16; each left slide rail 8 is slidably connected to two left sliders 18, and the top ends of the four left sliders 18 on the two left slide rails 8 are connected to the same rotor left support seat 7 by bolts, and each right slide rail 16 is slidably connected to two right sliders 19, and the top ends of the four right sliders 19 on the two right slide rails 16 are connected to the same rotor right support seat 15 by bolts. The rotor left support seat 7 and the rotor right support seat 15 are both irregular structures, and the structure is symmetrical in the vertical direction. From bottom to top, they are composed of a bottom cuboid 701, a right-angled trapezoid 702 and a top cuboid 703. The bottom surface of the right-angled trapezoid 702 is connected to the bottom cuboid. The top surfaces of 701 are the same, the length and width of the bottom surface of the top rectangular parallelepiped 703 are less than or equal to the length and width of the top surface of the corresponding right-angled trapezoid 702, the rotor left support seat 7 and the rotor right support seat 15 are both provided with rectangular parallelepiped holes from the top of the top rectangular parallelepiped to the bottom end of the middle right-angled trapezoid, the left screw jack 6 is placed in the rectangular parallelepiped hole in the middle of the rotor left support seat 7, the front and the top surface are open, and the other surfaces are closed, the rotor left support block 5 is slidably installed in the rectangular parallelepiped hole at the top, and the rotor left support block 5 can slide up and down in the rotor left support seat 7, the right screw jack 14 is placed in the rectangular parallelepiped hole in the middle of the rotor right support seat 15, the rotor right support block 13 is slidably installed in the rectangular parallelepiped hole at the top, and the rotor right support block 13 is in the rotor right support seat 15 It can slide up and down, and the upper surfaces of the left rotor support block 5 and the right rotor support block 13 are both semicircular. The top ends of the left rotor support block 5 and the right rotor support block 13 are higher than the left rotor support seat 7 and the right rotor support seat 15. Visual scales and infrared detectors are set in front and behind the left rotor support block 5 and the right rotor support block 13; the horizontality of the left rotor support base and the right rotor support base are adjusted by the top screw and the bottom plate to improve the accuracy of core entry and core pulling; the left rotor support seat is convenient to move through the cooperation of the left slide rail and the left slider, and the right rotor support seat is convenient to move in combination with the right slide rail and the right slider, which is simple to operate, saves time and effort, and improves efficiency; the height is adjusted by the left screw jack, the left rotor support block, the right screw jack, and the right rotor support block to improve accuracy.

[0022] A further embodiment of the present invention is as follows: Figure 5 As shown, the left slider 18 is symmetrical along the center line of the left slide rail 8 on both sides, the cross-section of the left slider 18 is a polygon, and the inner corners of the bottom end of the left slider 18 abut against the left slide rail 8, and the right slider 19 is symmetrical along the center line of the right slide rail 16 on both sides, the cross-section of the right slider 19 is a polygon, and the inner corners of the bottom end of the right slider 19 abut against the right slide rail 16; through the polygonal design of the left and right sliders, the overturning moment borne by the left and right slide rails is increased, the left and right support seats of the rotor are prevented from tipping over, and the stability and safety of the device are improved.

[0023] A further embodiment of the present invention is as follows: Figure 1 、 6 As shown, the rotor support left base 9 and the stator support base 1, as well as the stator support base 1 and the rotor support right base 17 are connected by a connecting unit 12. The connecting unit 12 includes a connecting boss 121 and a connecting recess 122. The connecting boss 121 is a "convex" type, and the connecting recess 122 is a "concave" type. The connecting boss 121 and the connecting recess 122 are embedded and clearance-matched, and the two ends are fixed by positioning pins 11. The horizontal end of the connecting boss 121 is welded to the rotor support left base 9, and the horizontal end of the matching connecting recess 122 is welded to one end of the stator support base 1. The connecting boss 121 and the connecting recess 122 are embedded and clearance-matched, and the two ends are fixed by positioning pins 11. The connection method of the stator support base 1 and the rotor support right base 17 is the same as the connection method of the rotor support left base 9 and the stator support base 1; the embedded design of the connecting boss and the connecting recess in the connecting unit facilitates installation and disassembly of the device and convenient maintenance. At the same time, the connecting boss and the connecting recess are easier to adjust the levelness, shortening the leveling time.

[0024] like Figure 7-9 As shown, a disassembly and assembly method for overhauling a large synchronous machine based on the above equipment has the following specific steps: S1: When the stator 3 coil of a large synchronous machine is grounded, burned, or sparked, or the rotor winding coil is grounded, burned, or sparked, or when a large synchronous machine has been used for 8 to 10 years and needs to be overhauled and disassembled, pull out the rotor 4 winding of the large synchronous machine from the cylindrical center hole of the stator 4. The disassembly steps are as follows: (1) Place a foundation plate under each set of top screws 10 of the rotor support left base 9, the rotor support right base 17 and the stator support base 1. The thickness of the foundation plate is 10 to 16 mm, the material is Q235 steel plate, and the size is 300 mm × 300 mm. Use the top screws 10 to level the stator support base 1, the rotor support left base 9 and the rotor support right base 17. Level the rotor support left base 9 and the stator support base 1 through the top screws 10 and the foundation plate. Level the rotor support right base 17 and the stator support base 1 through the top screws 10 and the foundation plate, so that the stator support base 1, the rotor support left base 9 and the rotor support right base 17 are on the same horizontal plane. (2) Measure and adjust the levelness of the stator support seat 1, the rotor support left base 9 and the rotor support right base 17 so that their levelness is less than 0.1mm; manually push the rotor left support seat 7 to the leftmost position of the rotor support left base 9 (dashed line position), measure and adjust the levelness of the rotor left support seat 7 so that its levelness is less than 0.1mm; push the rotor left support seat 7 to the rightmost position close to the position of the large synchronous machine stator 3 (solid line position), push the rotor right support seat 15 to the rightmost position of the rotor support right base 17 (dashed line position), measure and adjust the levelness of the rotor right support seat 15 so that its levelness is less than 0.1mm, and push the rotor right support seat 15 to the leftmost position close to the position of the large synchronous machine stator 3 (solid line position); (3) Remove the four anchor bolts of the large synchronous machine stator 3, use a 55-75t overhead crane to lift the large synchronous machine to be overhauled (damaged) as a whole through a Φ30-Φ50mm wire rope and place it on the stator support seat 2, and align the left and right main shafts of the rotor 4 with the rotor left support seat 7 and the rotor right support seat 15 respectively; adjust the left and right positions of the rotor right support seat 15 and the rotor left support seat 7 as well as the upper and lower positions of the left screw jack 6 and the right screw jack 14 so that the rotor 4 winding (coil) is located in the center of the cylindrical center hole of the stator 3, and the two sides of the rotor 4 winding (coil) are aligned. The distance between the sides of the cylindrical center hole of the stator 3 is equal and 325mm, that is, the horizontal center and vertical center of the rotor 4 winding (coil) and the cylindrical center hole of the stator 3 coincide with each other, ensuring that the gap (air gap) between the cylindrical center hole of the stator 3 and the rotor 4 winding (coil) is 0.8-3.2mm, and the left and right and upper and lower gaps are uniform; then the large synchronous machine is hoisted as a whole and placed on the stator support base 2, and the left and right main shafts of the rotor are placed on the left rotor support base 7 and the right rotor support base 15 respectively. The overhead crane is gradually loosened, and then the hoisting wire rope is removed and the overhead crane is removed; (4) Adjust the height of the left screw jack 6 in the left rotor support seat 7, align it with the visual scale and infrared detector in front and behind the left rotor support block 5, automatically detect and clearly observe the rising and falling height of the left rotor support block 5 and the center position of the rotor spindle, automatically detect and accurately measure the up and down sliding distance of the left rotor support block 5 in the left rotor support seat 7, and facilitate the adjustment of the center height of the rotor spindle 4 above the left rotor support block 5, so that the left rotor support block 5 is raised or lowered, and finally the left spindle center of the rotor 4 is consistent with the left center of the stator 3; adjust the height of the right screw jack 14 in the right rotor support seat, align it with the visual scale and infrared detector in front and behind the right rotor support block 13 The instrument automatically detects and clearly observes the rising and falling heights of the rotor right support block 13 and the main shaft center position of the rotor 4, automatically detects and accurately measures the up and down sliding distance of the rotor right support block 13 in the rotor right support seat 15, and is convenient for adjusting the center height of the rotor 4 main shaft above the rotor right support block 13, so as to raise or lower the rotor right support block 13, and finally make the right main shaft center of the rotor 4 consistent with the right center of the stator 3; at the same time, slowly push the rotor right support seat 15 and the rotor left support seat 7 to the right, so that the winding on the main shaft of the rotor 4 gradually and slowly exits the cylindrical center hole of the stator 3 of the large synchronous machine, and finally makes the winding on the main shaft of the rotor 4 completely exit the cylindrical center hole of the stator 3; (5) Use a 55-75t overhead crane to tie the main shafts on both sides of the rotor 4 winding (coil) through a Φ30-Φ50mm wire rope and lift the large synchronous machine rotor 4. Lift the damaged large synchronous machine rotor 4 right shaft on the rotor right support block 13 semicircle on the rotor right support seat 15, so that the rotor right support block 13 bears 70%-100% of the rotor weight. Gradually lift the overhead crane wire rope to gradually reduce the force on the rotor right support block 13 on the rotor right support seat 15 to 10-30% of the rotor 4 weight. Then slowly push the rotor right support seat 15 to the right to a position away from the large synchronous machine stator 3, so that the rotor right support seat The force on the rotor right support block 13 on 15 is reduced to 0-30% of the weight of the rotor 4; the rotor right support seat 15 is slowly pushed to the right, and the main shaft of the rotor 4 is slowly withdrawn from the center hole of the large synchronous machine stator 3, and the damaged large synchronous machine rotor 4 is gradually lifted, and the left end of the main shaft of the rotor 4 is gradually separated from the semicircle of the rotor left support block 5 on the rotor left support seat 7; the crane wire rope is gradually raised to reduce the weight of the rotor 4 borne by the semicircle of the rotor left support block 5 and the semicircle of the rotor right support block 13 to 0%-10%, and finally to 0% of the weight of the rotor 4, and then the rotor 4 is slowly lifted, and the crane is moved to move the rotor 4 to the repair workshop; (6) Push the rotor right support seat 15 to the rightmost position (dashed line position), and push the rotor left support seat 7 to the leftmost position (dashed line position). At this point, the entire large synchronous machine disassembly (core pulling) work is completed; S2: After the large synchronous machine is overhauled, that is, after the stator 3 coils (partially) are replaced or the rotor 4 windings (partially) are replaced, the stator and rotor of the large synchronous machine need to be assembled. The specific steps are as follows: (1) Place a foundation pad under each set of top screws 10 of the rotor support left base 9, the rotor support right base 17 and the stator support base 1, and level the rotor support left base 9 and the stator support base 1 with the top screws 10 and the foundation pad, and level the rotor support right base 17 and the stator support base 1 with the top screws 10 and the foundation pad, so that the stator support base 1, the rotor support left base 9 and the rotor support right base 17 are on the same horizontal plane; (2) Measure and adjust the levelness of the stator support base 1, the rotor support left base 9 and the rotor support right base 17 to make them level less than 0.1mm. Use an overhead crane to hoist the overhauled large synchronous machine stator 3 onto the front and rear sets of stator support bases 2 via steel wire ropes and fix them to the stator support bases 2 with hexagonal bolts. (3) Manually push the left rotor support seat 7 to the leftmost position of the rotor support left base 9 (dashed line position), measure the horizontality of the left rotor support seat 7, adjust it so that its horizontality is less than 0.1mm, push it to the rightmost position close to the position of the large synchronous machine stator 3 (solid line position), push the right rotor support seat 15 to the rightmost position of the rotor support right base 17 (dashed line position), measure the horizontality of the right rotor support seat 15, adjust it so that its horizontality is less than 0.1mm, use a 55-75t overhead crane to hoist the overhauled large synchronous machine rotor 4 right shaft through a Φ30-Φ50mm steel wire rope and place it on the semicircle of the rotor right support block 13 on the rotor right support seat 15, so that the rotor right support block 13 bears 10% of the weight of the rotor 4, and gradually lower the overhead crane steel wire rope to make the overhauled large synchronous machine rotor 4 right shaft hoisted and placed on the semicircle of the rotor right support block 13 on the rotor right support seat 15, so that the rotor right support block 13 bears 10% of the weight of the rotor 4. The rotor right support block 13 on the rotor right support seat 15 is subjected to a force of 10-20% of the weight of the rotor 4. The rotor right support seat 15 is slowly pushed manually to a position close to the large synchronous machine stator 3, so that the rotor right support block 13 on the rotor right support seat 15 is subjected to a force of 20-30% of the weight of the rotor 4; the rotor right support seat 15 is slowly pushed, and the rotor 4 main shaft is slowly pushed into the center hole of the large synchronous machine stator 3, and the left end of the rotor 4 main shaft is placed on the semicircle of the rotor left support block 5 on the rotor left support seat 7, and the overhead crane wire rope is gradually lowered so that the semicircle of the rotor left support block 5 and the semicircle of the rotor right support block 13 bear 30%-70% of the weight of the rotor 4, and finally bear 100% of the weight of the rotor 4, remove the lifting wire rope, and remove the overhead crane; (4) Adjust the height of the left screw jack 6 in the left rotor support seat 7, align it with the visual scale and infrared detector in front and behind the left rotor support block 5, automatically detect and clearly observe the rising and falling height of the left rotor support block 5 and the main shaft center position of the rotor 4, automatically detect and accurately measure the up and down sliding distance of the left rotor support block 5 in the left rotor support seat 7, and facilitate the adjustment of the center height of the rotor main shaft above the left rotor support block 5, so that the left rotor support block 5 is raised or lowered, and finally the left main shaft center of the rotor 4 is consistent with or coincides with the left center of the stator 3; adjust the height of the right screw jack 14 in the right rotor support seat 15, align it with the visual scale and infrared detector in front and behind the right rotor support block 13, Automatically detect and clearly observe the rising and falling heights of the rotor right support block 13 and the center position of the main shaft of the rotor 4, automatically detect and accurately measure the up and down sliding distance of the rotor right support block 13 in the rotor right support seat 15, so as to facilitate the adjustment of the center height of the rotor main shaft above the rotor right support block 13, so as to raise or lower the rotor right support block 13, and finally make the center of the right main shaft of the rotor 4 consistent with the right center of the stator 3; at the same time, push the rotor right support seat 15 and the rotor left support seat 7 to the left, so that the main shaft of the rotor 4 gradually and slowly enters the cylindrical center hole of the stator 3 of the large synchronous machine, and slowly makes the winding on the rotor main shaft completely enter the cylindrical center hole of the stator and be located at the center of the stator cylindrical center hole; (5) Adjust the left and right positions of the rotor right support 15 and the rotor left support 7, as well as the upper and lower positions of the left screw jack 6 and the right screw jack 14, so that the rotor 4 winding (coil) is located in the center of the cylindrical center hole of the stator 3, and the distance between the two sides of the rotor 4 winding (coil) and the two sides of the cylindrical center hole of the stator 3 is equal and is 325mm, that is, the horizontal center and vertical center of the rotor winding (coil) and the stator cylindrical center hole coincide, ensuring that the gap (air gap) between the stator cylindrical center hole and the rotor winding (coil) is 0.8~3.2mm, and the left and right and upper and lower gaps are uniform. At this point, the entire large synchronous machine assembly (core insertion) work is completed.

[0025] By adopting the disassembly and assembly equipment and the disassembly and assembly method of the present invention, the assembly and disassembly time of a large synchronous machine is shortened from 5 to 7 days to 1 to 2 days, and the number of people is reduced from 8 to 10 to 3 to 5 people. The operation is automated and one-buttoned, the risk level is reduced by 200 times, the time is shortened by 4 times, the number of people is reduced by 2 times, the difficulty and risk level of assembly and disassembly are reduced, the assembly and disassembly time is shortened, the output of iron ore powder is increased, the production cost is reduced, and the overall maintenance efficiency is improved.

Claims

1. A disassembly and assembly device for overhauling a large synchronous machine, characterized in that: The stator support base comprises a stator support base, a rotor support left base and a rotor support right base, the right end of the rotor support left base is connected to one end of the stator support base, and the other end of the stator support base is connected to the left end of the rotor support right base, multiple groups of base plates are welded on the left and right sides of the stator support base, a bolt hole is opened in the center of the base plate, a top screw is installed in the bolt hole, and the front and rear ends above the stator support base are respectively connected to the stator support seat by bolts, the rotor support left base and the rotor support right base are welded on the front and rear sides, a bolt hole is opened in the center of the base plate, a top screw is installed in the bolt hole, the front and rear ends above the rotor support left base are fixed with the left slide rail, and the front and rear ends above the rotor support right base are fixed with the right slide rail, and each left slide rail and right slide rail are fixed. Two sliders are slidably connected on the slide rails, the top ends of the four sliders on the two left slide rails are connected to the same rotor left support seat by bolts, and the top ends of the four sliders on the two right slide rails are connected to the same rotor right support seat by bolts. Rectangular holes are opened from the top to the middle of the left rotor support seat and the right rotor support seat, and a jack is placed in the rectangular hole in the middle. The front and top surfaces are open, and the other surfaces are closed. The rotor support block is slidably installed in the rectangular hole on the top, and the rotor support block can slide up and down in the left rotor support seat and the right rotor support seat. The upper surface of the rotor support block is semicircular, and the top end of the rotor support block is higher than the left rotor support seat and the right rotor support seat. Visual scales and infrared detectors are provided at the front and back of the rotor support block.

2. The disassembly and assembly equipment for overhauling a large synchronous machine according to claim 1, characterized in that: The rotor support left base and the stator support base, as well as the stator support base and the rotor support right base are all connected through a connecting unit. The connecting unit includes a connecting boss and a connecting recess. The connecting boss is a "convex" type, and the connecting recess is a "concave" type. The connecting boss and the connecting recess are embedded in the clearance fit and are fixed at both ends by bolts.

3. The disassembly and assembly equipment for overhauling a large synchronous machine according to claim 1, characterized in that: The stator support base, the left rotor support base and the right rotor support base all include an upper base plate and a lower base plate, and hollow square steel is welded between the upper base plate and the lower base plate.

4. The disassembly and assembly equipment for overhauling a large synchronous machine according to claim 1, characterized in that: The stator support seat has an isosceles trapezoidal cross section and comprises an upper base plate and a lower base plate. A frame is welded between the upper base plate and the lower base plate, and inclined plates are welded on both sides.

5. The disassembly and assembly equipment for overhauling a large synchronous machine according to claim 1, characterized in that: The two sides of the left slider are symmetrical along the center line of the left slide rail, and the two sides of the right slider are symmetrical along the center line of the right slide rail. The cross-sections of the left slider and the right slider are both polygonal. The inner corners of the bottom end of the left slider abut against the left slide rail, and the inner corners of the bottom end of the right slider abut against the right slide rail.

6. The disassembly and assembly equipment for overhauling a large synchronous machine according to claim 1, characterized in that: The left rotor support seat and the right rotor support seat are both irregular structures, and the structures are symmetrical in the vertical direction. From bottom to top, they are composed of a bottom cuboid, a right-angled trapezoid and a top cuboid. The bottom surface of the right-angled trapezoid is the same as the top surface of the bottom cuboid, and the length and width of the bottom surface of the top cuboid are less than or equal to the length and width of the corresponding top surface of the right-angled trapezoid.

7. The disassembly and assembly equipment for overhauling a large synchronous machine according to claim 1, characterized in that: A gasket is provided between the left rotor support base and the left slide rail, and a gasket is provided between the right rotor support base and the right slide rail.

8. The disassembly and assembly equipment for overhauling a large synchronous machine according to claim 1, characterized in that: Limiting blocks are welded on both sides of the left slide rail and the right slide rail. Lubricating grease is added between the left slide rail and the left slider, and lubricating grease is added between the right slide rail and the right slider.

9. A disassembly and assembly method for overhauling a large synchronous machine based on the disassembly and assembly equipment according to claim 1, characterized in that: The specific steps are as follows: S1: When a large synchronous machine's stator coil is grounded, burned, or sparked, or a rotor winding coil is grounded, burned, or sparked, or a large synchronous machine has been used for 8 to 10 years and needs to be overhauled and disassembled, the large synchronous machine rotor winding is pulled out from the cylindrical center hole of the stator. The disassembly steps are as follows: (1) Place a foundation pad under each set of top screws of the rotor support left base, the rotor support right base and the stator support base, and level the rotor support left base and the stator support base through the top screws and the foundation pad, and level the rotor support right base and the stator support base through the top screws and the foundation pad, so that the stator support base, the rotor support left base and the rotor support right base are on the same horizontal plane; (2) Measure and adjust the levelness of the stator support seat, the left rotor support base and the right rotor support base to make the levelness less than 0.1mm; manually push the left rotor support seat to the leftmost position of the left rotor support base, measure and adjust the levelness of the left rotor support seat to make the levelness less than 0.1mm; push the left rotor support seat to the rightmost position close to the position of the large synchronous machine stator, push the right rotor support seat to the rightmost position of the right rotor support base, measure and adjust the levelness of the right rotor support seat to make the levelness less than 0.1mm, and push the right rotor support seat to the leftmost position close to the position of the large synchronous machine stator; (3) Remove the four anchor bolts of the large synchronous machine stator, use the crane to lift the large synchronous machine to be overhauled (damaged) as a whole through the wire rope and place it on the stator support seat, and align the left and right main shafts of the rotor with the left and right rotor support seats respectively; adjust the left and right positions of the right and left rotor support seats and the up and down positions of the jack so that the rotor winding (coil) is located in the center of the stator cylindrical center hole, and the distance between the two sides of the rotor winding (coil) and the two sides of the stator cylindrical center hole is equal, that is, the horizontal center and vertical center of the rotor winding (coil) and the stator cylindrical center hole coincide, ensuring that the left and right and up and down gaps between the stator cylindrical center hole and the rotor winding (coil) are uniform; then lift the large synchronous machine as a whole and place it on the stator support seat, and place the left and right main shafts of the rotor on the left and right rotor support seats respectively. The crane is gradually loosened, and then the lifting wire rope is removed and the crane is removed; (4) Adjust the height of the jack in the left rotor support seat, align it with the visual scale and infrared detector in front and behind the left rotor support block, automatically detect and clearly observe the rising and falling height of the left rotor support block and the center position of the rotor spindle, automatically detect and accurately measure the up and down sliding distance of the left rotor support block in the left rotor support seat, so as to facilitate the adjustment of the center height of the rotor spindle above the left rotor support block, so that the left rotor support block is raised or lowered, and finally the center of the left rotor spindle is consistent with the left center of the stator; adjust the height of the jack in the right rotor support seat, align it with the visual scale and infrared detector in front and behind the right rotor support block The instrument can automatically detect and clearly observe the rising and falling height of the rotor right support block and the center position of the rotor spindle, automatically detect and accurately measure the up and down sliding distance of the rotor right support block in the rotor right support seat, and facilitate the adjustment of the center height of the rotor spindle above the rotor right support block, so as to raise or lower the rotor right support block, and finally make the center of the rotor right spindle consistent with the right center of the stator; at the same time, slowly push the rotor right support seat and the rotor left support seat to the right, so that the winding on the rotor spindle gradually and slowly exits the outside of the cylindrical center hole of the large synchronous machine stator, and finally make the winding on the rotor spindle completely exit the cylindrical center hole of the stator; (5) Use a crane to tie the main shafts on both sides of the rotor winding (coil) through a wire rope and lift the large synchronous machine rotor. Lift the damaged large synchronous machine rotor right shaft on the rotor right support block semicircle on the rotor right support seat, so that the rotor right support block bears 70% to 100% of the rotor weight. Gradually lift the crane wire rope to gradually reduce the force on the rotor right support block on the rotor right support seat to 10% to 30% of the rotor weight. Then slowly push the rotor right support seat to the right away from the large synchronous machine stator, so that the rotor right support block on the rotor right support seat Reduce the force on the support block to 0-30% of the rotor weight; slowly push the right support seat of the rotor to the right, slowly withdraw the rotor main shaft from the center hole of the large synchronous machine stator, and gradually lift the damaged large synchronous machine rotor, gradually separate the left end of the rotor main shaft from the semicircle of the rotor left support block on the left support seat of the rotor; gradually raise the crane wire rope to reduce the weight of the rotor supported by the semicircle of the left and right support blocks to 0%-10%, and finally to 0% of the rotor weight, then slowly lift the rotor and move the crane to move the rotor to the repair workshop; (6) Push the right support seat of the rotor to the rightmost position, and push the left support seat of the rotor to the leftmost position. At this point, the disassembly (core pulling) of the entire large synchronous machine is completed; S2: After the large synchronous machine is overhauled, that is, after the stator coil (part) or rotor winding (part) is replaced, the stator and rotor of the large synchronous machine need to be assembled. The specific steps are as follows: (1) Place a foundation pad under each set of top screws of the rotor support left base, the rotor support right base and the stator support base, and level the rotor support left base and the stator support base through the top screws and the foundation pad, and level the rotor support right base and the stator support base through the top screws and the foundation pad, so that the stator support base, the rotor support left base and the rotor support right base are on the same horizontal plane; (2) Measure and adjust the levelness of the stator support seat, the left rotor support base, and the right rotor support base to make them level less than 0.1 mm. Use an overhead crane to hoist the overhauled large synchronous machine stator onto the front and rear sets of stator support seats through a steel wire rope, and fix them to the stator support seats with hexagonal bolts. (3) Manually push the left rotor support to the leftmost position of the left rotor support base, measure the horizontality of the left rotor support, adjust it to make the horizontality less than 0.1mm, push it to the rightmost position close to the large synchronous machine stator position, push the right rotor support to the rightmost position of the right rotor support base, measure the horizontality of the right rotor support, adjust it to make the horizontality less than 0.1mm, use the crane to hoist the overhauled large synchronous machine rotor right shaft through the wire rope and place it on the semicircle of the rotor right support block on the rotor right support base, so that the rotor right support block bears 10% of the rotor weight, and gradually lower the crane wire rope to make the rotor right support on the rotor right support base The block is subjected to a force of 10-20% of the rotor weight. The rotor right support seat is slowly pushed manually to a position close to the large synchronous machine stator, so that the rotor right support block on the rotor right support seat is subjected to a force of 20-30% of the rotor weight; the rotor right support seat is slowly pushed, and the rotor main shaft is slowly pushed into the center hole of the large synchronous machine stator, and the left end of the rotor main shaft is placed on the semicircle of the rotor left support block on the rotor left support seat. The crane wire rope is gradually lowered so that the semicircle of the rotor left support block and the semicircle of the rotor right support block bear 30%-70% of the rotor weight, and finally bear 100% of the rotor weight. The lifting wire rope is removed and the crane is removed; (4) Adjust the height of the jack in the left rotor support seat, align it with the visual scale and infrared detector in front and behind the left rotor support block, automatically detect and clearly observe the rising and falling height of the left rotor support block and the center position of the rotor spindle, automatically detect and accurately measure the sliding distance of the left rotor support block in the left rotor support seat, so as to facilitate the adjustment of the center height of the rotor spindle above the left rotor support block. Raise or lower the left rotor support block, and finally make the center of the left rotor spindle consistent with or overlap with the left center of the stator; adjust the height of the jack in the right rotor support seat, align the visual scale and infrared detector in front and behind the right rotor support block, automatically detect and clearly observe the rising and falling height of the right rotor support block and the center position of the rotor spindle, automatically detect and accurately measure the up and down sliding distance of the right rotor support block in the right rotor support seat, so as to facilitate the adjustment of the center height of the rotor spindle above the right rotor support block, raise or lower the right rotor support block, and finally make the center of the right rotor spindle consistent with the right center of the stator; simultaneously push the right rotor support seat and the left rotor support seat to the left, so that the rotor spindle gradually and slowly enters the cylindrical center hole of the stator of the large synchronous machine, and slowly makes the winding on the rotor spindle completely enter the cylindrical center hole of the stator and be located in the center of the cylindrical center hole of the stator; (5) Adjust the left and right positions of the rotor right support and the left support, as well as the up and down positions of the jack, so that the rotor winding (coil) is located in the center of the stator cylindrical center hole, and the distances between the two sides of the rotor winding (coil) and the two sides of the stator cylindrical center hole are equal, that is, the horizontal and vertical centers of the rotor winding (coil) and the stator cylindrical center hole coincide, ensuring that the left and right and up and down gaps between the stator cylindrical center hole and the rotor winding (coil) are uniform. At this point, the entire large synchronous machine assembly (core insertion) work is completed.

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