Center positioning device of main shaft of water-turbine generator set

Abstract

The utility model is suitable for the technical field of hydraulic generator auxiliary devices, and provides a central positioning device of a main shaft of a hydraulic generator set. The three grooves are axially formed in the outer side wall of the positioning sleeve at equal intervals; the self-locking lead screw rotates on the inner side wall of the groove; the bevel gear is arranged at one end of the self-locking lead screw; the moving table is fixed on a nut seat on the self-locking lead screw through a nut; the positioning rod is integrally formed in the center of the outer side wall of the moving table; the main shaft penetrating hole is formed in the center of the outer side wall of the positioning sleeve; the three self-locking lead screws synchronously rotate after the rotating ring is rotated, the three positioning rods synchronously move towards the outer side of a bearing on the main shaft of the water-turbine generator set and clamp the bearing, the positioning sleeve is positioned on the coaxial line of the center of the main shaft through the self-locking characteristic of the self-locking lead screws, positioning operation is simple and convenient, and only the handle needs to axially move.

Description

Technical Field

[0001] The utility model belongs to the technical field of auxiliary devices for hydro-generators, in particular to a center positioning device for a main shaft of a hydro-generator set. Background Art

[0002] A hydro-turbine generator set refers to a hydroelectric power generation equipment consisting of a turbine, a hydro-turbine generator and its ancillary equipment. The main shaft is the main transmission shaft in the hydro-turbine generator, and a water wheel for water drive is installed at the end of the main shaft. In order to prevent the main shaft from shaking due to the water wheel during operation, a support device will be added to the end of the main shaft close to the water wheel.

[0003] When installing the existing main shaft support device of a hydro-turbine generator set, it is difficult to ensure that the ground is consistent with the rotation axis of the hydro-turbine generator, which makes it difficult to keep the main shaft support device consistent with the center of the main shaft when installing. After the installation is completed, the main shaft will vibrate significantly due to the influence of the support device and the water wheel, thereby greatly increasing the failure rate of the hydro-turbine generator set.

[0004] Therefore, a center positioning device for the main shaft of a hydro-generator set is proposed. Utility Model Content

[0005] The utility model provides a center positioning device for a main shaft of a hydro-generator set, aiming to solve the above-mentioned problem.

[0006] The utility model is achieved as follows: a center positioning device for the main shaft of a hydro-turbine generator set, comprising: a positioning sleeve; three grooves axially opened at equal intervals on the outer wall of the positioning sleeve; a self-locking screw rotating on the inner wall of the groove; a bevel gear provided at one end of the self-locking screw; and a movable platform fixed to the nut seat on the self-locking screw by a nut; a positioning rod integrally formed at the central position of the outer wall of the movable platform; a main shaft through-hole opened at the central position of the outer wall of the positioning sleeve; and a swivel provided at a position on one side of the outer wall of the positioning sleeve close to the groove; a slip ring integrally formed on the outer wall of the swivel, the slip ring and the positioning sleeve being slidably connected; a bevel gear ring provided on the outer wall of the swivel adjacent to the slip ring on one side; and a handle embedded in the outer wall of the swivel adjacent to the slip ring on the other side.

[0007] A center positioning device for the main shaft of a hydro-generator set also includes a support column welded to the bottom of the positioning sleeve; a column sleeve sleeved on the outside of the support column; a threaded hole opened on the outer wall of the support column; a fastening hole opened on the outer wall of the column sleeve; and a fastening nut threadedly engaged with the inside of the fastening hole.

[0008] Preferably, the bevel gear and the bevel gear ring are connected by gear teeth meshing.

[0009] Preferably, an annular sliding groove is provided on the outer side wall of the positioning sleeve close to the outer side of the slip ring.

[0010] Preferably, the movable platform and the positioning rod are combined to form a T-shaped structure.

[0011] Preferably, the fastening nut passes through the fastening hole.

[0012] Preferably, a mounting hole is provided on the top of the column sleeve, and the column sleeve and the support column match and fit together.

[0013] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0014] By rotating the swivel, the three self-locking screws can be rotated synchronously, and the three positioning rods can be moved synchronously to the outside of the bearing on the main shaft of the hydro-turbine generator set and clamped. The self-locking characteristics of the self-locking screws are used to position the positioning sleeve on the coaxial line with the center of the main shaft. The positioning operation is simple and convenient. Only the handle needs to be moved axially. The positioning sleeve is supported by the support column and the column sleeve to support the main shaft of the hydro-turbine generator set, thereby ensuring the stable rotation of the main shaft of the hydro-turbine generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of the utility model;

[0016] Figure 2 This is a schematic diagram of the support column and column sleeve structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the explosion of the swivel of the utility model;

[0018] Figure 4 This is a cross-sectional view of the positioning sleeve of the utility model;

[0019] Figure 5 This utility model Figure 1 A in the enlarged view.

[0020] In the figure: 1. Positioning sleeve; 2. Groove; 3. Self-locking screw; 4. Bevel gear; 5. Moving table; 6. Positioning rod; 7. Spindle through hole; 8. Swivel; 9. Slip ring; 10. Bevel gear ring; 11. Handle; 12. Support column; 13. Column sleeve; 14. Threaded hole; 15. Fastening hole; 16. Fastening nut. DETAILED DESCRIPTION

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the application are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0022] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0023] The present invention provides a device for centering the main shaft of a hydro-generator set. Figure 1-5 As shown, it includes a positioning sleeve 1, three grooves 2 are provided on the outer wall of one side of the positioning sleeve 1 at equal intervals in the axial direction, and the inner side walls of the three grooves 2 are rotatably connected with a self-locking screw 3, one end of the self-locking screw 3 is provided with a bevel gear 4, and the nut seat on the self-locking screw 3 is fixedly connected to a moving platform 5 through a nut, and a positioning rod 6 is integrally formed at the central position of the outer wall of one side of the moving platform 5. The moving platform 5 and the positioning rod 6 are combined to form a T-shaped structure, a main shaft through-hole 7 is provided at the central position of the outer wall of one side of the positioning sleeve 1, a swivel 8 is provided on the outer wall of one side of the positioning sleeve 1 near the outer side of the three grooves 2, and a slip ring 9 is integrally formed on the outer wall of one side of the swivel 8. The outer wall of the positioning sleeve 1 is close to the outer side of the three grooves 2. An annular groove is provided on the outer side of the near slip ring 9, and the slip ring 9 and the positioning sleeve 1 are slidingly connected. A bevel gear ring 10 is welded on the outer wall of the swivel 8 adjacent to the slip ring 9, and a handle 11 is welded on the outer wall of the other side of the swivel 8 adjacent to the slip ring 9. A support column 12 is welded to the bottom of the positioning sleeve 1, and a column sleeve 13 is provided on the outer side of the support column 12. A mounting hole is provided on the top of the column sleeve 13, and the column sleeve 13 and the support column 12 match each other. A threaded hole 14 is provided on the outer wall of one side of the support column 12, and a fastening hole 15 is provided on the outer wall of one side of the column sleeve 13. The inside of the threaded hole 14 is screwed with a fastening nut 16, and the fastening nut 16 passes through the fastening hole 15.

[0024] It should be noted that, since the existing support device of the main shaft of the hydro-turbine generator set is difficult to be consistent with the center of the main shaft during installation, the main shaft will vibrate greatly after installation due to the influence of the support device and the water wheel, thereby greatly increasing the failure rate of the hydro-turbine generator set. In this embodiment, the three self-locking screws 3 are rotated synchronously by rotating the swivel 8, and the three positioning rods 6 are moved synchronously toward the outside of the bearing on the main shaft of the hydro-turbine generator set and clamped. The self-locking characteristics of the self-locking screw 3 are utilized to position the positioning sleeve 1 on the coaxial line with the center of the main shaft. The positioning operation is simple and convenient. It is only necessary to move the handle 11 axially. The support of the positioning sleeve 1 by the support column 12 and the column sleeve 13 is achieved to support the main shaft of the hydro-turbine generator set, thereby ensuring the stable rotation of the main shaft of the hydro-turbine generator set.

[0025] Specifically, in this embodiment, this solution mainly includes a positioning rod 6. When in use, the main shaft through-hole 7 on the positioning sleeve 1 is sleeved on the outer side of the main shaft bearing of the hydro-generator set. At this time, hold the handle 11 and rotate it in a circle. The slip ring 9 slides on the positioning sleeve 1, so that the swivel 8 moves axially on the positioning sleeve 1, and the bevel gear ring 10 on the swivel 8 moves synchronously. The bevel gear ring 10 is connected with the bevel gear 4 through the meshing connection between the bevel gear ring 10 and the bevel gear 4. After the bevel gear 4 rotates, it drives the self-locking screw 3 to rotate synchronously. The three self-locking screws 3 rotate synchronously, and the moving platform 5 on the self-locking screw 3 moves toward the bearing on the main shaft of the hydro-generator set, and makes one end of the positioning rod 6 contact and squeeze with the outer side wall of the bearing, and the three positioning rods 6 are used to realize the positioning sleeve 1 in the water Positioning on the main shaft of the turbine generator set. At this time, the position of the column sleeve 13 is adjusted according to the ground height, the column sleeve 13 is raised and lowered on the outside of the support column 12, and the fastening nut 16 is passed through the fastening hole 15 and then screwed into the threaded hole 14 to achieve the connection and fixation between the support column 12 and the column sleeve 13. When the column sleeve 13 contacts the ground, the column sleeve 13 is fixed to the ground. The positioning sleeve 1 is supported by the support column 12 and the column sleeve 13, which can support the main shaft of the turbine generator set and ensure the stable rotation of the main shaft of the turbine generator set. When the support column 12 and the column sleeve 13 are fixed, and the bottom of the column sleeve 13 cannot contact the ground, a gasket of matching height can be added to the bottom of the column sleeve 13, so that the support column 12 and the column sleeve 13 can provide supporting force for the positioning sleeve 1.

[0026] In a further preferred embodiment of the present invention, Figure 4 As shown, the bevel gear 4 and the bevel gear ring 10 are connected via gear tooth meshing.

[0027] In this embodiment, the bevel gear ring 10 rotates through the meshing connection between the bevel gear 4 and the bevel gear ring 10, and the bevel gear ring 10 drives the bevel gear 4 to rotate. The three bevel gears 4 rotate synchronously, so that the three self-locking screws 3 rotate synchronously, and then the positioning rod 6 moves synchronously toward the bearing on the main shaft of the hydro-generator set, so that the device is positioned on the main shaft bearing of the hydro-generator set, thereby supporting the main shaft of the hydro-generator set.

[0028] It should be noted that for the aforementioned embodiments, for simplicity of description, they are all expressed as a series of action combinations. However, those skilled in the art should be aware that the present invention is not limited by the order of the actions described, because according to the present invention, certain steps may be performed in other orders or simultaneously. Secondly, those skilled in the art should also be aware that the embodiments described in this specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the present invention.

[0029] In the several embodiments provided in this application, it should be understood that the disclosed devices can be implemented in other ways. For example, the device embodiments described above are merely illustrative, such as the division of the above-mentioned units. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the coupling or communication connection between each other shown or discussed can be through some interfaces, and the indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0030] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0031] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the scope of protection of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope to be protected by the present invention. Although the present invention has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the present invention according to the circumstances without conflict, without making any creative work, so as to obtain different other technical solutions that do not deviate from the concept of the present invention in essence, and these technical solutions also fall within the scope to be protected by the present invention.

Claims

1. A center positioning device for the main shaft of a hydro-generator set, characterized in that: include: Positioning sleeve (1); Three grooves (2) are axially arranged at equal intervals on the outer side wall of the positioning sleeve (1); A self-locking screw (3) rotates on the inner side wall of the groove (2); a bevel gear (4) provided at one end of the self-locking screw (3); and A movable platform (5) fixed to a nut seat on the self-locking screw (3) via a nut; A positioning rod (6) integrally formed at the center of the outer side wall of the movable platform (5); A main shaft through hole (7) is provided at the center of the outer side wall of the positioning sleeve (1); and A rotating ring (8) is provided on the outer wall of the positioning sleeve (1) at a position close to one side of the groove (2); A slip ring (9) is integrally formed on the outer wall of the rotating ring (8), and the slip ring (9) and the positioning sleeve (1) are slidably connected; a conical gear ring (10) provided on the outer wall of the rotating ring (8) adjacent to the slip ring (9); and A handle (11) is embedded in the outer wall of the rotating ring (8) adjacent to the other side of the sliding ring (9).

2. A center positioning device for a main shaft of a hydro-generator set according to claim 1, characterized in that: It also includes a support column (12) welded to the bottom of the positioning sleeve (1); A column sleeve (13) sleeved on the outside of the support column (12); A threaded hole (14) is provided on the outer side wall of the support column (12); A fastening hole (15) is provided on the outer side wall of the column sleeve (13); A fastening nut (16) is screwed into the fastening hole (15).

3. The center positioning device for the main shaft of a hydro-generator set according to claim 1, characterized in that: The bevel gear (4) and the bevel gear ring (10) are connected via gear teeth meshing.

4. The center positioning device for the main shaft of a hydro-generator set according to claim 1, characterized in that: An annular sliding groove is provided on the outer side wall of the positioning sleeve (1) near the outer side of the slip ring (9).

5. The center positioning device for the main shaft of a hydro-generator set according to claim 1, characterized in that: The movable platform (5) and the positioning rod (6) are combined to form a T-shaped structure.

6. The center positioning device for the main shaft of a hydro-generator set according to claim 2, characterized in that: The fastening nut (16) passes through the fastening hole (15).

7. The center positioning device for the main shaft of a hydro-generator set according to claim 2, characterized in that: A mounting hole is provided on the top of the column sleeve (13), and the column sleeve (13) and the support column (12) are matched and fitted.

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