Assembly tool for blades and bearings on generator rotor

Abstract

The present invention discloses an assembly tool for fan blades and bearings on a generator rotor in the technical field of generator rotor assembly, comprising a bearing pressure block and a fan blade pressure block, the bearing pressure block and the fan blade pressure block forming an integral structure, the outer circular edge of the top of the receiving ring is connected to the bottom inner ring surface of the limiting baffle, the receiving ring, the limiting baffle and the bearing pressure surface are arranged to form a cylindrical cavity with an opening on one side vertical side wall; the bearing pressure surface is parallel to the bottom plane of the receiving ring and the top pressure ring, and the vertical axes coincide with each other, so that all bearings and fan blades can be press-fitted onto the driving shaft of the generator rotor by only one press-fit, thereby improving efficiency, and each generator rotor can be assembled by only one press-fit, so that the fan blades and bearings are pressed at the same time by a hydraulic press during press-fitting, and are subjected to the same force direction and force, thereby ensuring that the bearings and fan blades will not be deflected and subjected to force during press-fitting.

Description

Technical Field

[0001] The invention relates to the technical field of generator rotor assembly, in particular to an assembly tool for blades and bearings on a generator rotor. Background Art

[0002] The rotating part of the rotor generator is mainly composed of conductive rotor windings, magnetic iron core, rotor shaft extension, guard ring, center ring and fan blades.

[0003] In the production of generator rotors, the rotor windings need to be made first. After the winding components are assembled, the rotor blades and bearings are pressed into place. Blades, fans, and wind blades all refer to the fan blades of the generator set. The fan blades and bearings belong to the later process. Therefore, during assembly, workers need to ensure quality while also being efficient to prepare for the subsequent assembly of the generator set. The current press-fit production method has the following problems:

[0004] In the conventional assembly method, the rotor winding of the generator rotor needs to be pressed twice. The first press: first, you need to take the fan blades and align the fan blades on the rotating shaft of the rotor winding. Use a special tooling fixture to match the fan blades, then press down the hydraulic press, the fan blades fall into place, and wait for the hydraulic pressure of the hydraulic press to recover.

[0005] Second press-fitting: Reusing the bearing also requires a special tooling fixture for the bearing, because the structure and shape of the bearing and the fan blade are completely different, and the stress points are also completely different. Different tooling is needed to install the bearing. When the hydraulic pressure of the same hydraulic press is raised to the required pressure, the assembled bearing is aligned with the rotor shaft, the hydraulic press presses down, presses the bearing into place, and the hydraulic pressure rises again. The entire process step needs to go through two operations, which is cumbersome and inefficient. Because the press-fitting tool is a pneumatic device, the operator needs press-fitting assistance. For the sake of work efficiency, the press-fitting speed is too fast, which may cause hand injury and pose a safety hazard. The most important thing is that it needs to be pressed twice, which is cumbersome. In addition, the hydraulic press needs to press down with greater pressure each time. Each time the press-fitting is performed, the generator rotor will also be subjected to force, and slight offsets are inevitable. This manual operation method cannot ensure that the bearing and the fan blade are coaxial. Once the axis is deviated during press-fitting, it will cause the generator set to rotate deviated, and deflection may occur during subsequent use.

[0006] Based on this, the present invention designs an assembly tool for blades and bearings on a generator rotor to solve the above problems. Summary of the Invention

[0007] The object of the present invention is to provide an assembly tool for fan blades and bearings on a generator rotor, which can press-fit all bearings and fan blades onto the drive shaft of the generator rotor only by press-fitting them in sequence, thereby improving efficiency. Each generator rotor can be assembled only once, and because it is only pressed once, the fan blades and bearings are subjected to the same force direction and strength during press-fitting, ensuring that the bearings and fan blades will not be deflected or subjected to force during press-fitting.

[0008] The present invention is implemented as follows: an assembly tool for blades and bearings on a generator rotor, comprising:

[0009] A bearing pressing block and a fan blade pressing block, wherein the bearing pressing block and the fan blade pressing block form an integral structure;

[0010] The bearing pressure block is a truncated cone-shaped structure with a through-axis hole on its vertical axis. The bottom surface of the bearing pressure block is the bearing pressure surface. A limit baffle is provided on the bottom of the bearing pressure block, which is vertically raised downward. The limit baffle is an annular vertical plate and vertically surrounds the arc edge of the bearing pressure surface.

[0011] The through-axis hole penetrates the bearing pressure surface;

[0012] The fan blade pressure block includes a receiving ring and a top pressure ring. The receiving ring is an open flat circular ring, and the top pressure ring is an open annular vertical plate. The top pressure ring protrudes downward on the inner ring edge of the bottom of the receiving ring. The notch axes of the receiving ring, the top pressure ring and the limit baffle coincide.

[0013] The outer edge of the top of the receiving ring is connected to the inner ring surface of the bottom of the limit baffle, and the receiving ring, the limit baffle and the bearing pressure surface are arranged to form a cylindrical cavity with a vertical side wall opening on one side;

[0014] The bearing pressure surface is parallel to the bottom planes of the receiving ring and the top pressure ring, and the vertical axes of the bearing pressure block, the bearing pressure surface, the receiving ring and the top pressure ring coincide with each other.

[0015] Furthermore, two arc-shaped guide blocks are protruding downward on the bearing pressure surface, and the two guide blocks are symmetrically arranged on both sides of the arc-shaped side wall opening of the limit baffle. The two guide blocks are arranged on the edge of the outer wall of the bearing pressure surface, and the inner bottom edges of the two guide blocks are provided with guide arc edges, and the guide arc edges are circular arc chamfers. The height difference between the bottom of the guide block and the receiving ring is greater than the height of the bearing.

[0016] Furthermore, the bearing pressure surface includes a yield ring groove, a connecting platform and a pushing platform. The yield ring groove is an annular groove that is recessed upward on the bearing pressure surface, and the pushing platform is an annular boss that is protruding downward. The yield ring groove is sleeved on the outer circle of the pushing platform, and the connecting platform is an arc-shaped annular surface flush with the pushing platform. The connecting platform is arranged at the opening of the limit baffle, and the projections of the limit baffle and the connecting platform on the bearing pressure surface form a complete circular ring. The connecting platform is connected between the openings of the two guide blocks.

[0017] Furthermore, the limit baffle is a semicircular annular plate, the outer side wall of the limit baffle is flush with the outer side wall of the bearing pressure block, the arc-shaped side wall opening of the limit baffle is a semicircular opening, and the inner ring diameter of the vertical side wall of the limit baffle is larger than the outer diameter of the bearing installed on the generator rotor;

[0018] The height h of the limit baffle is greater than the height of the bearing, and the height difference does not exceed one-fifth of the height of the bearing.

[0019] Furthermore, the inner ring diameters of the receiving ring and the top pressure ring are the same, and the inner ring diameters of the receiving ring and the top pressure ring are larger than the diameter of the drive shaft, and the aperture of the through-shaft hole is larger than the diameter of the drive shaft; the outer ring diameter of the receiving ring is larger than the outer diameter of the bearing mounted on the generator rotor;

[0020] The opening width c of the receiving ring and the top pressure ring is larger than the diameter of the drive shaft, and the outer diameter of the top pressure ring is within the diameter range of the inner and outer rings of the blade seat on the fan blade.

[0021] The beneficial effects of the present invention are as follows: 1. The present invention can push the fan blades and bearings into place at the same time with only one push through the bearing pressing block and the fan blade pressing block under the push of the hydraulic press, thereby avoiding directional error of the secondary push and ensuring synchronous pushing of the fan blades and bearings;

[0022] 2. Moreover, this device is pushed by the tooling fixture. Once pushed, the parts are in place, which effectively improves the assembly efficiency. There is no need to repeatedly disassemble and assemble different fixtures, thus avoiding disassembly and assembly errors. There is also no need to wait for the hydraulic press to return pressure during the assembly process. The assembly can be completed in one go. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 Schematic diagram of the bearing pressure surface at the bottom of the bearing pressure block of the present invention;

[0026] Figure 3 This is a schematic diagram of the cooperation between the limit baffle and the fan blade pressing block of the present invention;

[0027] Figure 4 A top view of the limit baffle and the fan blade pressing block of the present invention;

[0028] Figure 5 This is a schematic diagram of the bearing pressure surface structure of the present invention;

[0029] Figure 6 This is a bottom view of the bearing pressure surface of the present invention;

[0030] Figure 7 This is a schematic diagram of the overall installation structure of the device and the generator of the present invention;

[0031] Figure 8 This is a schematic diagram of the fan blade structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the assembly of the generator, fan blades and bearings of the present invention;

[0033] Figure 10 This is an exploded view of the assembly of the motor, fan blades and bearings of the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0035] 1-bearing pressure block, 11-limit baffle, 12-guide block, 13-through shaft hole, 14-guide arc edge, 2-fan blade pressure block, 21-receiving ring, 22-top pressure ring, 3-bearing pressure surface, 31-yield ring groove, 32-connection platform, 33-pushing platform, 4-generator rotor, 41-fan blade, 411-fan blade seat, 412-fan blade center hole, 42-bearing, 421-bearing pin, 43-drive shaft. DETAILED DESCRIPTION

[0036] See also Figures 1 to 10 As shown, the present invention provides a technical solution: an assembly tool for blades and bearings on a generator rotor, comprising:

[0037] The bearing pressing block 1 and the fan blade pressing block 2 form an integral structure;

[0038] The bearing pressing block 1 is a truncated cone-shaped structure, with a through-axis hole 13 provided on its vertical axis. The bottom surface of the bearing pressing block 1 is the bearing pressing surface 3. A limit baffle 11 is provided on the bottom of the bearing pressing block 1, which is vertically raised downward. The limit baffle 11 is an annular vertical plate, and the limit baffle 11 is vertically downward and surrounds the arc edge of the bearing pressing surface 3.

[0039] The through-axis hole 13 penetrates the bearing pressure surface 3;

[0040] The fan blade pressing block 2 includes a receiving ring 21 and a top pressure ring 22. The receiving ring 21 is an open flat circular ring, and the top pressure ring 22 is an open annular vertical plate. The top pressure ring 22 protrudes downward at the inner ring edge of the bottom of the receiving ring 21. The axes of the notches of the receiving ring 21, the top pressure ring 22 and the limit baffle 11 coincide with each other.

[0041] The outer edge of the top of the receiving ring 21 is connected to the inner ring surface of the bottom of the limit baffle 11. The receiving ring 21, the limit baffle 11 and the bearing pressure surface 3 are arranged to form a cylindrical cavity with a vertical sidewall opening on one side.

[0042] The bearing pressure surface 3 is parallel to the bottom planes of the receiving ring 21 and the top pressure ring 22, and the vertical axes of the bearing pressure block 1, the bearing pressure surface 3, the receiving ring 21 and the top pressure ring 22 coincide with each other. The bearing 42 and the fan blade 41 can be press-fitted onto the drive shaft 43 of the generator rotor 4 only by press-fitting in sequence, thereby improving efficiency. Each generator rotor 4 can be assembled by press-fitting only once, and because it is press-fitted only once, the fan blade 41 and the bearing 42 are press-fitted at the same time by the hydraulic press, and the force direction and strength are the same, ensuring that the bearing 42 and the fan blade 41 will not be deflected and subjected to force during press-fitting.

[0043] Among them, two arc-shaped guide blocks 12 are further protruded downward on the bearing pressure surface 3, and the two guide blocks 12 are symmetrically arranged on both sides of the arc-shaped side wall opening of the limit baffle 11. The two guide blocks 12 are arranged on the outer wall edge of the bearing pressure surface 3, and the inner bottom edges of the two guide blocks 12 are provided with guide arc edges 14, and the guide arc edges 14 are circular arc chamfers. The height difference between the bottom of the guide block 12 and the receiving ring 21 is greater than the height of the bearing 42. The guide block 12 facilitates the horizontal limitation of the bearing 42 to prevent the bearing 42 from being forced to bounce open, and the bearing 42 can also horizontally exit the cavity of the limit baffle 11 due to the height difference;

[0044] The bearing pressure surface 3 includes a yield ring groove 31, a connecting platform 32 and a pushing platform 33. The yield ring groove 31 is an annular groove that is recessed upward on the bearing pressure surface 3, and the pushing platform 33 is an annular boss that protrudes downward. The yield ring groove 31 is sleeved on the outer circle of the pushing platform 33, and the connecting platform 32 is an arc-shaped annular surface flush with the pushing platform 33. The connecting platform 32 is arranged at the opening of the limit baffle 11. The projection of the limit baffle 11 and the connecting platform 32 on the bearing pressure surface 3 forms a complete circular ring. The connecting platform 32 is connected between the openings of the two guide blocks 12, which is convenient for the bearing pressure surface 3 to push the top plane of the bearing 42, and also makes the outer ring and the ball of the bearing 42 free from force, but the inner ring of the bearing 42 is evenly subjected to the pushing force of the annular surface, ensuring that the bearing 42 is evenly pushed downward, so that it is assembled balanced with the drive shaft 43;

[0045] The limit baffle 11 is a semicircular annular plate. The outer wall of the limit baffle 11 is flush with the outer wall of the bearing pressure block 1. The arc-shaped side wall opening of the limit baffle 11 is a semicircular opening. The inner ring diameter of the vertical side wall of the limit baffle 11 is larger than the outer diameter of the bearing 42 installed on the generator rotor.

[0046] The height h of the limit baffle 11 is greater than the height of the bearing 42, and the height difference does not exceed one-fifth of the height of the bearing 42. At the same time, the height of the limit baffle 11 is greater than the sum of the height of the bearing 42 and the height of the limit block 12, ensuring that when the device is lifted, the bearing 42 can horizontally exit the cavity of the limit baffle 11 from below the limit block 12;

[0047] The inner ring diameters of the receiving ring 21 and the pressing ring 22 are the same, and the inner ring diameters of the receiving ring 21 and the pressing ring 22 are larger than the diameter of the drive shaft 43. The aperture of the through-shaft hole 13 is larger than the diameter of the drive shaft 43. The outer ring diameter of the receiving ring 21 is larger than the outer diameter of the bearing 42 mounted on the generator rotor.

[0048] The opening width c of the receiving ring 21 and the top pressure ring 22 is larger than the diameter of the drive shaft 43, and the diameter of the top pressure ring 22 is within the range of the inner and outer ring diameters of the blade seat 411 on the fan blade 41, ensuring that the drive shaft 43 can easily pass through the receiving ring 21 and the top pressure ring 22, and the drive shaft 43 can exit horizontally from the opening, and the receiving ring 21 can lift the bearing 42 at the beginning of assembly to facilitate force pushing.

[0049] In a specific embodiment of the present invention:

[0050] The embodiment of the present invention provides an assembly tool for the blades and bearings on the generator rotor. The technical problem solved by the present invention is that the existing generator rotor windings are complicated to assemble with the blades 41 and bearings 42, with low efficiency, and the operation requires two separate pushes, the pushing direction may be skewed, and the pushing process requires manual replacement and assembly, which poses a safety hazard.

[0051] The technical effects achieved are as follows: 1. The present invention can push the fan blade 41 and the bearing 42 into place at the same time with only one push under the push of the hydraulic press, through the bearing pressing block 1 and the fan blade pressing block 2, thereby avoiding the direction error of the secondary push and ensuring the synchronous pushing of the fan blade 41 and the bearing 42;

[0052] 2. This device is pushed by the jig, which can be pushed once and in one step, so that the assembly efficiency is effectively improved. There is no need to repeatedly disassemble and assemble different jigs, which avoids disassembly and assembly errors. There is also no need to wait for the hydraulic press to return pressure during the assembly process. The assembly can be completed in one go.

[0053] 3. During the assembly process, the device does not require disassembly of the jig, which avoids manual operation when the hydraulic press is in working condition and effectively avoids danger. When the assembled generator rotor 4 is removed after assembly, a lifting device is used, which also does not require manual operation. When hoisting the generator rotor 4, the hydraulic press needs to start the insurance, which is safer and effectively avoids manual operation when the equipment is dangerous.

[0054] The technical solution in the embodiment of the present invention is to solve the above problems, and the overall idea is as follows:

[0055] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0056] During the manufacturing process of the present invention, a cylindrical structure is made as the bearing pressing block 1, and the bottom of the bearing pressing block 1 is the bearing pressing surface 3. The bearing pressing surface 3 has three uneven ring surfaces which are sequentially mounted. The inner ring is a downwardly protruding pushing platform 33, the middle ring is an upwardly concave yielding ring groove 31, and the outermost ring is a downwardly protruding connecting platform 32. The connecting platform 32 and the pushing platform 33 have the same protruding height, and the width and diameter of the yielding ring groove 31 correspond to the positions of the outer ring and ball of the bearing 42 to be installed, so as to prevent the outer ring and ball of the bearing 42 from being subjected to force. A through-axis hole 13 is provided on the vertical axis of the bearing pressing block 1. The through-axis hole 13 vertically penetrates the entire bearing pressing block 1, and the aperture of the through-axis hole 13 is larger than the diameter of the drive shaft 43.

[0057] A limit baffle 11 is vertically installed below the connection platform 32, as shown in FIG. Figure 2 As shown, the limit baffle 11 is vertically connected to the bottom of the bearing block 1, and has the same width as the connecting platform 32, and is a downward vertical semicircular ring surface;

[0058] The bottom of the limit baffle 11 is connected to the fan blade pressing block 2, and one side of the limit baffle 11 is open. The projection of the limit baffle 11 and the connecting platform 32 forms a complete ring, and the limit baffle 11 and the connecting platform 32 each stand on a half ring;

[0059] The protruding heights of the connecting platform 32 and the pushing platform 33 do not exceed 15 mm, and the height h of the limit baffle 11 is greater than the height of the bearing 42. The height of the conventional limit baffle 11 exceeds the height of the bearing 42 and is set according to different installed bearings 42.

[0060] The fan blade pressing block 2 is connected to the bottom of the limiting baffle 11 .

[0061] The fan blade pressing block 2 includes a receiving ring 21 and a top pressure ring 22. The receiving ring 21 is a horizontally arranged annular flat plate, while the top pressure ring 22 is a vertically set annular plate.

[0062] The top pressure ring 22 is vertically set downward at the bottom of the receiving ring 21. Figure 2 and Figure 3 As shown, the vertical side wall of the top pressure ring 22 is perpendicular to the bottom surface of the receiving ring 21, and the receiving ring 21 and the top pressure ring 22 are both provided with an opening on one side, and the opening width c is greater than the diameter of the drive shaft 43, and the difference between the width c and the drive shaft diameter does not exceed 20 mm;

[0063] The openings of the receiving ring 21 and the top pressure ring 22 coincide with the opening axis of the limit baffle 11, and the vertical axes of the inner rings of the limit baffle 11, the receiving ring 21, and the top pressure ring 22 coincide with each other; the opening spacing c between the receiving ring 21 and the top pressure ring 22 is greater than the diameter of the drive shaft 43;

[0064] The inner diameters of the receiving ring 21 and the pressing ring 22 are larger than the diameter of the drive shaft 43, while the outer diameter of the receiving ring 21 is larger than the outer diameter of the bearing 42. This ensures that the receiving ring 21 can support the bearing 42. The inner diameters of the receiving ring 21 and the pressing ring 22 are larger than the inner diameter of the bearing 42.

[0065] And such a structure enables the receiving ring 21, the limiting baffle 11 and the bearing pressure surface 3 to be configured as a cylindrical cavity with a vertical side wall opening, and the opening of the cavity and the limiting baffle 11 each occupy half of the circular ring.

[0066] The top positions on the left and right sides of the limit baffle 11 are each connected to a guide block 12, and the height b of the guide block 12 does not exceed one-fifth of the height of the bearing 42. The top of the guide block 12 is connected to the connecting platform 32, and the annular width of the guide block 12 and the connecting platform 32 are the same. The guide block 12 is also an annular vertical plate. The vertical side wall of one side of the guide block 12 is connected to the limit baffle 11, and the two guide blocks 12 are symmetrically connected to the openings on both sides of the limit baffle 11. At the same time, the inner arc edge of the bottom of the guide block 12 is chamfered to the guide arc edge 14, and the guide arc edge 14 is an arc chamfer inclined toward the inner side of the ring, which is convenient for guiding the bearing 42 and ensuring that the opening width d of the guide arc edge 14 between the guide blocks 12 on both sides is smaller than the outer ring diameter of the bearing 42. The arc surface contacts the bearing 42 first, which is convenient for arc surface guiding of the bearing 42.

[0067] The device installed in this embodiment is the generator rotor 4, which needs to be assembled with the blades 41 and the bearing 42;

[0068] The through hole in the middle of the fan blade 41 that connects with the bearing is the fan blade center hole 412, and the annular surface used by the fan blade 41 to push is the fan blade seat 411;

[0069] A bearing pin 421 is also provided on the bearing 42 to lock the bearing to prevent the outer ring from rotating; there is a drive shaft 43 on the generator rotor 4, which is not only used for transmission, but also requires the fan blades 41 and bearings 42 to be accurately mounted on the drive shaft 43.

[0070] When the present invention is used, the pre-assembled generator rotor 4 and drive shaft 43 are first positioned and pressed. The motor shaft and the rotor core are interference fit, that is, the shaft is large and the hole is small. The positioning and pressing are performed by a hydraulic press to ensure that the position of the generator rotor 4 is stable and the drive shaft 43 is vertically aligned with the pressing end of the hydraulic press.

[0071] Then, the fan blade 41 is mounted on the drive shaft 43, and the drive shaft 43 passes through the center hole 412 of the fan blade. Then, the bearing 42 is pushed into the cavity of the bearing pressure block 1 and the fan blade pressure block 2 from the opening of the limit baffle 11, and the inner hole of the bearing 42 is aligned with the through-shaft hole 13. At this time, the bearing 42 is supported by the receiving ring 21, and the inner hole of the bearing 42 is exposed within the range of the inner ring hole of the top pressure ring 22, which facilitates the docking and installation of the inner ring of the bearing 42 and the drive shaft 43.

[0072] The through-shaft hole 13 of the device is also fitted onto the drive shaft 43, so that the drive shaft 43 passes through the top pressure ring 22, the receiving ring 21, the limit baffle 11 and the bearing pressure block 1 from bottom to top, and the drive shaft 43 is inserted into the through-shaft hole 13; at this time, the bearing 42 is in the cavity between the receiving ring 21 and the bearing pressure surface 3 of the device, and ensure that the lower end face of the top pressure ring 22 is facing the fan blade seat 411;

[0073] Then the hydraulic press presses on the top of the bearing block 1 and pushes it downward. At this time, the bearing block 1 is continuously pushed downward. Under the reverse thrust of the drive shaft 43, the top of the bearing 42 is in contact with the bearing pressure surface 3. At this time, the bearing 42 is separated from the top annular surface of the receiving ring 21.

[0074] During the rising process of the bearing 42, the top of the bearing 42 contacts the guide block 12. The guide arc edge 14 is guided inwardly by the rounded corners, so that the bearing 42 is restricted within the blocking range of the guide block 12 and the limit baffle 11, ensuring that the bearing 42 is at the center of the bearing pressure surface 3. The guide block 12 and the limit baffle 11 prevent the bearing 42 from being ejected by force.

[0075] The outer ring and ball of bearing 42 correspond to the yield ring groove 31. Because there is a certain height gap, the ball and outer ring of bearing 42 do not contact each other with the bearing pressure surface 3, and the outer ring of bearing 42 is limited by the limit baffle 11 and the connecting platform 32 to ensure the accurate position of bearing 42; in this way, when the outer end of drive shaft 43 is aligned with the top plane of bearing pressure block 1, bearing 42 and fan blade 41 are both pushed into place. Such size needs to be set according to the height of bearing 42, the length of drive shaft 43 and the height h of limit baffle 11. The precise size can be customized according to actual needs.

[0076] When the fan blades 41 and bearings 42 are installed in place, the hydraulic press is withdrawn from the pressure so that the bearing pressure block 1 is no longer under pressure, and then the bearing pressure block 1 is lifted upward. At this time, there is a height gap between the bearing 42 and the cavity of the limit baffle 11. The sum of the height b of the guide block 12 and the height of the bearing 42 is less than the height h of the limit baffle 11. In this way, it can be ensured that after the bearing 42 is installed, the device is lifted upward as a whole, so that the bearing 42 is separated from the bearing pressure surface 3. At this time, the bearing 42 can exit the cavity of the bearing pressure block 1 and the fan blade pressure block 2 from the semicircular notch of the limit baffle 11; at the same time, the opening length c of the receiving ring 21 and the top pressure ring 22 is greater than the diameter of the drive shaft 43, and the drive shaft 43 can be easily withdrawn horizontally from the opening of the receiving ring 21 and the top pressure ring 22, and the openings of the receiving ring 21 and the top pressure ring 22 are in the same direction as the opening of the limit baffle 11 and in the same position, so that the device can exit the assembled generator rotor winding along the horizontal direction.

[0077] At this time, the guide block 12 is above the bearing 42 and will not block the bearing 42, which is convenient for operation and simple to use. It is formed in sequence to avoid the fan blades 41 and the bearing 42 being pushed separately, which causes slight deviations in the pushing direction. The device pushes in sequence to ensure that the force direction is consistent, and it has a simple structure and is easy to use.

[0078] In addition, in the description of the present invention, it should be noted that when terms such as "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0079] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An assembly tool for blades and bearings on a generator rotor, characterized in that: include: A bearing pressing block (1) and a fan blade pressing block (2), wherein the bearing pressing block (1) and the fan blade pressing block (2) form an integral structure; The bearing pressing block (1) is a truncated cone-shaped structure, and a through-axis hole (13) is provided on its vertical axis. The bottom surface of the bearing pressing block (1) is a bearing pressing surface (3). A limit baffle (11) is provided on the bottom of the bearing pressing block (1) and vertically protrudes downward. The limit baffle (11) is an annular vertical plate and vertically surrounds the arc edge of the bearing pressing surface (3). The through-axis hole (13) penetrates the bearing pressure surface (3); The fan blade pressing block (2) comprises a receiving ring (21) and a top pressure ring (22), wherein the receiving ring (21) is an open flat plate-shaped circular ring, and the top pressure ring (22) is an open annular vertical plate, and the top pressure ring (22) protrudes downwards on the inner ring edge of the bottom of the receiving ring (21), and the notch axes of the receiving ring (21), the top pressure ring (22) and the limit baffle (11) coincide with each other; The outer circular edge of the top of the receiving ring (21) is connected to the inner ring surface of the bottom of the limiting baffle (11), and the receiving ring (21), the limiting baffle (11) and the bearing pressure surface (3) are arranged to form a cylindrical cavity with a vertical side wall opening on one side; The bearing pressure surface (3) is parallel to the bottom planes of the receiving ring (21) and the top pressure ring (22), and the vertical axes of the bearing pressure block (1), the bearing pressure surface (3), the receiving ring (21) and the top pressure ring (22) coincide with each other; Two arc-shaped guide blocks (12) are also provided on the bearing pressure surface (3) protruding downward. The two guide blocks (12) are symmetrically arranged on both sides of the arc-shaped side wall opening of the limit baffle (11). The two guide blocks (12) are arranged on the outer wall edge of the bearing pressure surface (3), and the inner bottom edges of the two guide blocks (12) are provided with guide arc edges (14). The guide arc edges (14) are circular arc chamfers. The height difference between the bottom of the guide block (12) and the receiving ring (21) is greater than the height of the bearing (42). The bearing pressure surface (3) includes a clearance ring groove (31), a connecting platform (32) and a pushing platform (33). The clearance ring groove (31) is an annular groove that is recessed upward on the bearing pressure surface (3). The pushing platform (33) is an annular boss that is protruding downward. The clearance ring groove (31) is sleeved on the outer circle of the pushing platform (33). The connecting platform (32) is an arc-shaped annular surface flush with the pushing platform (33). The connecting platform (32) is arranged at the opening of the limit baffle (11). The projections of the limit baffle (11) and the connecting platform (32) on the bearing pressure surface (3) form a complete circular ring. The connecting platform (32) is connected between the openings of the two guide blocks (12).

2. The assembly tool for blades and bearings on a generator rotor according to claim 1, characterized in that: The limiting baffle (11) is a semicircular annular plate, the outer side wall of the limiting baffle (11) is flush with the outer side wall of the bearing pressure block (1), the arc-shaped side wall opening of the limiting baffle (11) is a semicircular opening, and the inner ring diameter of the vertical side wall of the limiting baffle (11) is larger than the outer diameter of the bearing (42) installed on the generator rotor; Furthermore, the height h of the limiting baffle (11) is greater than the height of the bearing (42), and the height difference does not exceed one fifth of the height of the bearing (42).

3. The assembly tool for blades and bearings on a generator rotor according to claim 1, characterized in that: The inner ring diameters of the receiving ring (21) and the top pressure ring (22) are the same, and the inner ring diameters of the receiving ring (21) and the top pressure ring (22) are larger than the diameter of the drive shaft (43); the aperture of the through-shaft hole (13) is larger than the diameter of the drive shaft (43); the outer ring diameter of the receiving ring (21) is larger than the outer diameter of the bearing (42) mounted on the generator rotor; The opening width c of the receiving ring (21) and the top pressure ring (22) is greater than the diameter of the drive shaft (43), and the outer diameter of the top pressure ring (22) is within the range of the inner and outer ring diameters of the blade seat (411) on the blade (41).

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