Gap adjusting device for guide bearing bush of hydraulic generator

Abstract

The utility model relates to the technical field of guide bearing bush adjustment, and discloses a hydro-generator guide bearing bush gap adjusting device which comprises a shaft collar and a machine shell and further comprises a bearing bush body arranged on the right side of the shaft collar, the right side of the bearing bush body is fixedly connected with an inclined block, the surface of the machine shell is fixedly connected with a supporting block, and the inclined block is fixedly connected with the supporting block. The top of the supporting block is fixedly connected with a fixing frame. The folding plates are fixed to the front side and the rear side of the fixing frame, the opposite sides of the front folding plate and the rear folding plate are rotationally connected with a two-way screw rod, and the front portion and the rear portion of the surface of the two-way screw rod are in threaded connection with movable blocks; according to the utility model, force can be applied to the inclined block, so that the inclined block can push the bearing bush body so as to conveniently adjust the gap between the bearing bush body and the shaft collar, and meanwhile, after adjustment, the attaching plate can be driven to move, so that one end of the attaching plate is attached to one side of the shaft collar; therefore, a user can conveniently observe the gap between the shaft collar and the bearing bush body.

Description

Technical Field

[0001] The utility model relates to the technical field of guide bearing bush adjustment, in particular to a gap adjustment device for a guide bearing bush of a hydrogenerator. Background Technique

[0002] The guide bearing of a vertical hydrogenerator is used to bear the radial mechanical unbalance force and electromagnetic unbalance force of the rotating part of the unit, so that the axis of the unit swings within the specified value range, which plays an important role in the stable operation of the unit. Usually, the guide bearing is installed in the oil sump of the center body of the frame and consists of multiple sector-shaped swing pads. To ensure that the bearing bush is not burned during operation, an oil film gap must be designed between the bearing bush and the journal according to national standards.

[0003] After retrieval, for example, a Chinese patent document discloses a bearing bush of a hydrogenerator with adjustable gap

Publication No.: CN219911008U

[0004] The bearing bush disclosed in this patent can adjust the distance between the bearing bush and the journal, and after adjustment, the screw can be limited by the cooperation of a toothed ring and a gear to prevent the bearing bush from loosening after adjustment. Although the screw can be limited by the cooperation of the toothed ring and the gear, the limit is achieved by the elastic force of the spring itself. However, after long-term use, the spring will reduce its elastic potential energy, thereby affecting subsequent use. Content of the Utility Model

[0005] The purpose of the utility model is to provide a gap adjustment device for a guide bearing bush of a hydrogenerator to solve the problems existing in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A gap adjustment device for a guide bearing bush of a hydrogenerator, including a journal and a casing, further including:

[0007] A bearing bush body arranged on the right side of the journal, an inclined block is fixedly connected to the right side of the bearing bush body, a support block is fixedly connected to the surface of the casing, and a fixed frame is fixedly connected to the top of the support block;

[0008] Folded plates fixed on the front and rear sides of the fixing frame, and a bidirectional screw is rotatably connected to the opposite sides of the front and rear folded plates. The front and rear sides of the surface of the bidirectional screw are both threadedly connected with movable blocks. The upper and lower sides of the movable blocks are both hinged with support rods. The other end of the upper support rod is hinged to the top inside the fixing frame, and the other end of the lower support rod is hinged with a wedge block;

[0009] A force application structure arranged inside the fixing frame and used to drive the bidirectional screw to rotate. The top of the bearing shell body is fixedly connected with a fixing plate, and a fitting plate is movably connected inside the fixing plate.

[0010] Preferably, the force application structure includes a crank, a worm rotatably connected inside the top end of the fixing frame, and a worm gear fixed on the surface of the bidirectional screw. One side of the worm gear is meshed with one side of the worm.

[0011] Preferably, a fixing rod is fixed between the front and rear folded plates. The front and rear sides of the surface of the fixing rod are both movably connected with fixing sleeves. One side of the fixing sleeve is fixed to one side of the movable block.

[0012] Preferably, the length of the fitting plate is adapted to the width of the bearing shell body, and a push plate is fixed to the top of one end of the fitting plate.

[0013] Preferably, T-shaped grooves are formed in the front and rear sides of the right side of the inclined block, and T-shaped blocks for sliding inside the T-shaped grooves are fixed to the front and rear sides of the left side of the wedge block.

[0014] Preferably, a support plate is fixedly connected to the top inside the fixing frame, and the inside of the support plate is rotatably connected to the surface of the bidirectional screw.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] Through the threaded connection between the surface of the bidirectional screw and the threads inside the front and rear movable blocks, the present utility model can apply force to the support rods, so that the two lower support rods can drive the wedge block to move up and down, thereby applying force to the inclined block, enabling the inclined block to push the bearing shell body, facilitating the adjustment of the gap between the bearing shell body and the shaft collar. At the same time, after the adjustment, it can drive the fitting plate to move, so that one end of the fitting plate is in contact with one side of the shaft collar, thus facilitating the user to observe the gap between the shaft collar and the bearing shell body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a three-dimensional structural schematic diagram of the present utility model;

[0018] Figure 2 is a right-view structural schematic diagram of the present utility model;

[0019] Figure 3 It is a schematic diagram of the partial left view structure in the present utility model;

[0020] Figure 4 It is a schematic diagram of the partial right view structure in the present utility model.

[0021] In the figure: 1. Shaft collar; 2. Machine housing; 3. Journal bearing body; 4. Inclined block; 5. Fixed frame; 6. Folding plate; 7. Bidirectional screw; 8. Movable block; 9. Support rod; 10. Wedge block; 11. Force application structure; 111. Crank; 112. Worm; 113. Worm gear; 12. Fixed plate; 13. Fitting plate; 14. Support block; 15. Fixed rod; 16. Fixed sleeve; 17. T-shaped block; 18. T-shaped groove; 19. Support plate. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4 As shown, a gap adjustment device for a guide bearing of a hydrogenerator includes a shaft collar 1 and a machine housing 2. A journal bearing body 3 is arranged on the right side of the shaft collar 1. An inclined block 4 is fixedly connected to the right side of the journal bearing body 3. A support block 14 is fixedly connected to the surface of the machine housing 2. A fixed frame 5 is fixedly connected to the top of the support block 14. Folding plates 6 are fixedly connected to both the front and rear sides of the fixed frame 5. A bidirectional screw 7 is rotatably connected to the opposite sides of the front and rear folding plates 6. Movable blocks 8 are threadedly connected to both the front and rear sides of the surface of the bidirectional screw 7. Support rods 9 are hinged to both the upper and lower sides of the movable block 8. The other end of the upper support rod 9 is hinged to the top inside the fixed frame 5. The other end of the lower support rod 9 is hinged to a wedge block 10. A force application structure 11 for driving the bidirectional screw 7 to rotate is arranged inside the fixed frame 5. A fixed plate 12 is fixedly connected to the top of the journal bearing body 3. A fitting plate 13 is movably connected inside the fixed plate 12.

[0024] The force application structure 11 includes a crank 111, a worm 112, and a worm gear 113. The surface of the worm 112 is rotatably connected to the inside of the top end of the fixed frame 5. The top end of the worm 112 is fixed to the bottom of the crank 111. The worm gear 113 is fixed at the middle position on the surface of the bidirectional screw 7. One side of the worm gear 113 is meshed with one side of the worm 112. Thus, when driving the bidirectional screw 7 to rotate, the crank 111 can be rotated to drive the worm 112 to rotate, and at the same time drive the worm gear 113 to rotate, and then drive the bidirectional screw 7 to rotate. At the same time, through the setting of the force application structure 11, the rotation of the bidirectional screw 7 can also be locked.

[0025] A fixing rod 15 is fixed between the front and rear folding plates 6. Fixing sleeves 16 are movably connected to the front and rear of the surface of the fixing rod 15. One side of the fixing sleeve 16 is fixed to one side of the movable block 8. Thus, the front and rear movable blocks 8 can be limited, facilitating their movement towards each other or in opposite directions.

[0026] The length of the fitting plate 13 is adapted to the width of the bearing shell body 3. A push plate is fixed to the top of one end of the fitting plate 13. Thus, it is convenient to drive the fitting plate 13 to move to facilitate subsequent understanding of the distance between the gaps.

[0027] T-shaped grooves 18 are formed in the front and rear of the right side of the inclined block 4. T-shaped blocks 17 for sliding inside the T-shaped grooves 18 are fixed to the front and rear of the left side of the wedge-shaped block 10. Thus, the moving distance of the wedge-shaped block 10 on the surface of the inclined block 4 can be limited and guided, facilitating subsequent better adjustment.

[0028] A support plate 19 is fixedly connected to the top inside the fixed frame 5. The inside of the support plate 19 is rotatably connected to the surface of the bidirectional screw 7. Thus, the bidirectional screw 7 can be supported and its stability during rotation can be maintained.

[0029] It should be noted that: in this technical solution, technical features such as should be regarded as the prior art. For the specific structures, working principles, possible control methods, and spatial layout methods of these technical features, conventional selections in the art can be adopted, and this technical solution will not be further specifically elaborated.

[0030] Working principle: When in use, when adjusting the gap between the bearing shell body 3 and the shaft collar 1, the bidirectional screw rod 7 can be driven to rotate through the force application structure 11, and the front and rear movable blocks 8 are driven to move towards or away from each other, and the support rod 9 is applied with force, so as to drive the wedge block 10 to move up or down, so as to apply force to the inclined block 4, so as to conveniently drive the bearing shell body 3 to move together, so as to adjust the distance between the shaft collar 1 and the bearing shell body 3. During the adjustment process, the fitting plate 13 can be pushed, and one end of the fitting plate 13 is driven to fit with the right side of the shaft collar 1. Then, the scale marking on the top of the fitting plate 13 can be observed to understand the distance length between the shaft collar 1 and the bearing shell body 3.

[0031] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0032] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gap adjustment device for the guide bearing of a hydrogenerator, comprising a shaft collar (1) and a casing (2), characterized in that, Further included are: A bearing bush body (3) arranged on the right side of the shaft collar (1). A bevel block (4) is fixedly connected to the right side of the bearing bush body (3). A support block (14) is fixedly connected to the surface of the machine housing (2), and a fixing frame (5) is fixedly connected to the top of the support block (14); Folding plates (6) fixed to the front and rear sides of the fixing frame (5). A bidirectional screw (7) is rotatably connected to the facing sides of the front and rear folding plates (6). Movable blocks (8) are threadedly connected to the front and rear of the surface of the bidirectional screw (7). Support rods (9) are hinged to the upper and lower sides of the movable blocks (8). The other end of the upper support rod (9) is hinged to the inner top of the fixing frame (5), and the other end of the lower support rod (9) is hinged to a wedge-shaped block (10); A force application structure (11) arranged inside the fixing frame (5) and used to drive the bidirectional screw (7) to rotate. A fixing plate (12) is fixedly connected to the top of the bearing bush body (3), and a fitting plate (13) is movably connected inside the fixing plate (12).

2. The clearance adjusting device for the guide bearing of a hydrogenerator according to claim 1, characterized in that: The force application structure (11) includes a crank (111), a worm (112) rotatably connected to the inner top of the top end of the fixing frame (5), and a worm gear (113) fixed to the surface of the bidirectional screw (7). One side of the worm gear (113) meshes with one side of the worm (112).

3. A clearance adjustment device for a guide bearing of a hydrogenerator according to claim 1, characterized in that: A fixing rod (15) is fixed between the front and rear folding plates (6). Fixing sleeves (16) are movably connected to the front and rear of the surface of the fixing rod (15). One side of the fixing sleeve (16) is fixed to one side of the movable block (8).

4. A gap adjustment device for a guide bearing of a hydrogenerator according to claim 1, characterized in that: The length of the fitting plate (13) is adapted to the width of the bearing bush body (3). A push plate is fixed to the top of one end of the fitting plate (13).

5. A gap adjustment device for the guide bearing of a hydrogenerator according to claim 1, characterized in that: T-shaped grooves (18) are formed in the front and rear of the right side of the bevel block (4). T-shaped blocks (17) used to slide inside the T-shaped grooves (18) are fixed to the front and rear of the left side of the wedge-shaped block (10).

6. A clearance adjustment device for a guide bearing of a hydro-generator according to claim 1, characterized in that: A support plate (19) is fixedly connected to the inner top of the fixing frame (5). The inside of the support plate (19) is rotatably connected to the surface of the bidirectional screw (7).

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