Anti-deformation pressing mechanism

Abstract

The utility model belongs to the technical field of steam turbine rotors, and particularly relates to an anti-deformation pressing mechanism which comprises a main shaft body, a bearing shaft is fixedly installed in the middle of the main shaft body, a rotor is fixedly installed at the left end of the main shaft body, and impellers are evenly and fixedly installed on the circumferential surface of the main shaft body. And a connecting plate is fixedly installed on the circumferential surface of the right side of the main shaft body, a first lead screw is rotationally installed at the front end of the right side of the connecting plate, and a second lead screw is rotationally installed at the upper end of the right side of the connecting plate. According to the device, a worker fixedly installs the connecting plate on the circumferential surface of the right side of the main shaft body, then drives the first fixing plate, the second fixing plate and the third fixing plate to rotate by rotating the first lead screw, the second lead screw and the third lead screw, and then drives the two-way lead screw to rotate through the rotating block; and then the two-way screw rod drives the upper clamping plate and the lower clamping plate to move in opposite directions in the rotating process of the two-way screw rod.

Description

Technical Field

[0001] This utility model relates to the field of steam turbine rotor technology, specifically to an anti-deformation clamping mechanism. Background Technology

[0002] Steam turbines are crucial equipment in thermal power plants, closely impacting their profitability. The rotor, the assembly of all rotating parts within a steam turbine, is the core component that directly affects the efficient operation of the turbine. When the turbine rotor experiences mass imbalance or deformation, it will vibrate under the influence of unbalanced forces. This fault can cause serious damage, increasing the threat to turbine operation safety and raising equipment maintenance costs.

[0003] The existing method uses a lathe chuck to hold one end of the turbine rotor and a central roller frame to support the end of the turbine rotor for machining. However, the weight of the turbine rotor is concentrated in the middle of the rotor. During the operation of the turbine, this will cause a large load on the turbine rotor journal, increasing the probability of turbine rotor journal deformation, thereby causing equipment damage and affecting work efficiency. Utility Model Content

[0004] The main objective of this disclosure is to provide an anti-deformation clamping mechanism to effectively solve the problems raised by the inventors in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] An anti-deformation clamping mechanism includes a main shaft, a receiving shaft fixedly installed in the middle of the main shaft, a rotor fixedly installed at the left end of the main shaft, impellers uniformly fixedly installed on the circumferential surface of the main shaft, a connecting plate fixedly installed on the right circumferential surface of the main shaft, a first lead screw rotatably installed at the front right end of the connecting plate, a second lead screw rotatably installed at the upper right end of the connecting plate, and a third lead screw rotatably installed at the rear right end of the connecting plate. A first fixing plate is threadedly connected to the circumferential surface of the first lead screw, a second fixing plate is threadedly connected to the circumferential surface of the second lead screw, and a third fixing plate is threadedly connected to the circumferential surface of the third lead screw. A guide rod is fixedly installed on the left side inside the first, second, and third fixing plates. An upper clamping plate is movably sleeved on the upper side of the circumferential surface of the guide rod, and a lower clamping plate is movably sleeved on the lower side of the circumferential surface of the guide rod. A bidirectional lead screw is threadedly connected to the right side of the first, second, and third fixing plates, and a rotating block is fixedly installed at the upper end of the bidirectional lead screw.

[0007] Preferably, a reinforcing plate is symmetrically fixedly installed on the right circumferential surface of the spindle body. A limiting groove is formed in the middle of the opposite side of the upper clamping plate and the lower clamping plate, and the reinforcing plate is movably installed in the limiting groove. The reinforcing plate can improve the rigidity of the spindle journal, and at the same time, the upper clamping plate and the lower clamping plate can be movably engaged with the reinforcing plate through the limiting groove, thereby reducing the probability of spindle deformation.

[0008] Preferably, the first, second, and third lead screws have uniformly formed connecting holes on their circumferential surfaces, and these connecting holes are respectively adapted to the first, second, and third fixing plates. This allows the first, second, and third lead screws to move along the right side of the spindle body during rotation, and vice versa. This adjustment adjusts the clamping and fixing positions of the upper and lower clamping plates on the spindle body, increasing the stability of the spindle body.

[0009] Preferably, the maximum inner diameter of the upper clamping plate and the lower clamping plate is greater than the maximum outer diameter of the right side of the spindle body; this allows the upper clamping plate and the lower clamping plate to clamp the journals of spindle bodies with different diameters more stably, thereby improving the applicability of the upper clamping plate and the lower clamping plate.

[0010] Preferably, the upper end of the bidirectional lead screw passes through the circumferential surfaces of the first fixed plate, the second fixed plate, and the third fixed plate; this allows the operator to more easily and conveniently rotate the bidirectional lead screw via the rotating block, thereby quickly clamping and fixing the right side of the spindle body through the upper and lower clamping plates.

[0011] Preferably, the vertical cross-sectional dimensions of the reinforcing plate are consistent with the vertical cross-sectional dimensions of the limiting groove; this can reduce the gap between the reinforcing plate and the limiting groove, thereby allowing the upper clamping plate and the lower clamping plate to be more stably engaged with the limiting groove, thus improving the stability of the right journal of the spindle body through the limiting groove.

[0012] In view of this, compared with the prior art, the beneficial effects of this utility model are:

[0013] (i) In this application, the operator fixes the connecting plate on the right circumferential surface of the spindle body, and then rotates the first lead screw, the second lead screw and the third lead screw to rotate the first fixed plate, the second fixed plate and the third fixed plate respectively. Then, the rotating block rotates the bidirectional lead screw. During the rotation of the bidirectional lead screw, the upper clamping plate and the lower clamping plate move in opposite directions, so that the opposite side of the upper clamping plate and the lower clamping plate is in contact with the right circumferential surface of the spindle body. Thus, the upper clamping plate and the lower clamping plate clamp and fix the spindle body, increase the stability of the spindle body journal and reduce the deformation of the spindle body.

[0014] (ii) In this application, a reinforcing plate 17 is symmetrically fixedly installed on the right circumferential surface of the spindle body 1. Then, the operator rotates the bidirectional lead screw through the rotating block, thereby quickly clamping and fixing the reinforcing plate symmetrically fixedly installed on the right side of the spindle body through the upper clamping plate and the lower clamping plate, thereby improving the robustness of the spindle journal through the reinforcing plate. Attached Figure Description

[0015] Figure 1 The figure shown is a schematic diagram of the overall structure provided by this utility model;

[0016] Figure 2 The image shown is a right view of the present invention.

[0017] Figure 3 The diagram shown is a schematic representation of the overall structure of the connecting plate provided by this utility model.

[0018] Figure 4 The figure shown is a schematic cross-sectional view of the present invention.

[0019] Icons: 1. Main shaft; 2. Receiving shaft; 3. Rotor; 4. Impeller; 5. Connecting plate; 6. First lead screw; 7. Second lead screw; 8. Third lead screw; 9. First fixing plate; 10. Second fixing plate; 11. Third fixing plate; 12. Guide rod; 13. Upper clamping plate; 14. Lower clamping plate; 15. Bidirectional lead screw; 16. Rotating block; 17. Reinforcing plate; 18. Limiting groove. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-4 The present invention provides the following embodiments:

[0022] An anti-deformation clamping mechanism includes a main shaft 1, a receiving shaft 2 fixedly mounted in the middle of the main shaft 1, a rotor 3 fixedly mounted at the left end of the main shaft 1, impellers 4 uniformly fixedly mounted on the circumferential surface of the main shaft 1, a connecting plate 5 fixedly mounted on the right circumferential surface of the main shaft 1, a first lead screw 6 rotatably mounted at the front right end of the connecting plate 5, a second lead screw 7 rotatably mounted at the upper right end of the connecting plate 5, and a third lead screw 8 rotatably mounted at the rear right end of the connecting plate 5. A first fixing plate 9 is threadedly connected to the circumferential surface of the first lead screw 6, and the second lead screw 7... A second fixing plate 10 is threaded onto the circumferential surface of the first fixing plate 9, the second fixing plate 10, and the third fixing plate 11 is threaded onto the circumferential surface of the third lead screw 8. A guide rod 12 is fixedly installed on the left side inside the first fixing plate 9, the second fixing plate 10, and the third fixing plate 11. An upper clamping plate 13 is movably sleeved on the upper side of the circumferential surface of the guide rod 12, and a lower clamping plate 14 is movably sleeved on the lower side of the circumferential surface of the guide rod 12. A bidirectional lead screw 15 is threaded onto the right side of the first fixing plate 9, the second fixing plate 10, and the third fixing plate 11. A rotating block 1 is fixedly installed at the upper end of the bidirectional lead screw 15. 6. The operator fixes the connecting plate 5 to the right circumferential surface of the spindle body 1, and then rotates the first lead screw 6, the second lead screw 7, and the third lead screw 8 to rotate the first fixing plate 9, the second fixing plate 10, and the third fixing plate 11. This causes the first fixing plate 9, along with the upper clamping plate 13 and the lower clamping plate 14, to move to the right circumferential surface of the spindle body 1 away from the connecting plate 5, and the third fixing plate 11, along with the upper clamping plate 13 and the lower clamping plate 14, to move to the right circumferential surface of the spindle body 1 closer to the connecting plate 5. Position the second fixing plate 10 between the first fixing plate 9 and the third fixing plate 11. Then, rotate the bidirectional lead screw 15 via the rotating block 16. During the rotation of the bidirectional lead screw 15, move the upper clamping plate 13 and the lower clamping plate 14 in opposite directions. Then, bring the opposite sides of the upper clamping plate 13 and the lower clamping plate 14 into contact with the right circumferential surface of the spindle body 1. This allows the upper clamping plate 13 and the lower clamping plate 14 to clamp and fix the spindle body 1, increasing the stability of the spindle body 1 journal and reducing the deformation of the spindle body 1.

[0023] Specifically, a reinforcing plate 17 is symmetrically fixedly installed on the right circumferential surface of the spindle body 1. A limiting groove 18 is opened in the middle of the opposite side of the upper clamping plate 13 and the lower clamping plate 14. The reinforcing plate 17 is movably installed in the limiting groove 18. By symmetrically fixing the reinforcing plate 17 on the right circumferential surface of the spindle body 1 and then movably installing the reinforcing plate 17 in the limiting groove 18, the robustness of the journal of the spindle body 1 can be improved by the reinforcing plate 17.

[0024] Specifically, the circumferential surfaces of the first lead screw 6, the second lead screw 7, and the third lead screw 8 are uniformly provided with connecting holes, which are adapted to the first fixing plate 9, the second fixing plate 10, and the third fixing plate 11, respectively. By providing connecting holes on the circumferential surfaces of the first lead screw 6, the second lead screw 7, and the third lead screw 8, the first fixing plate 9 can be moved to the right side of the spindle 1 during the rotation of the first lead screw 6, the second fixing plate 10 can be moved to the right side of the spindle 1 during the rotation of the second lead screw 7, and the third fixing plate 11 can be moved to the right side of the spindle 1 during the rotation of the third lead screw 8. This allows the first lead screw 6, the second lead screw 7, and the third lead screw 8 to move the first fixing plate 9, the second fixing plate 10, and the third fixing plate 11 to the right side of the spindle 1, respectively.

[0025] Specifically, the maximum inner diameter of the upper clamping plate 13 and the lower clamping plate 14 is greater than the maximum outer diameter of the right side of the spindle body 1. By making the maximum inner diameter of the upper clamping plate 13 and the lower clamping plate 14 greater than the maximum outer diameter of the right side of the spindle body 1, the upper clamping plate 13 and the lower clamping plate 14 can clamp the journals of the spindle body 1 with different diameters more stably.

[0026] Specifically, the upper end of the bidirectional lead screw 15 passes through the circumferential surfaces of the first fixed plate 9, the second fixed plate 10, and the third fixed plate 11. Allowing the upper end of the bidirectional lead screw 15 to pass through the circumferential surfaces of the first fixed plate 9, the second fixed plate 10, and the third fixed plate 11 makes it easier and more convenient for workers to rotate the bidirectional lead screw 15 using the rotating block 16.

[0027] Specifically, the vertical cross-sectional dimensions of the reinforcing plate 17 are consistent with those of the limiting groove 18. By making the vertical cross-sectional dimensions of the reinforcing plate 17 consistent with those of the limiting groove 18, the gap between the reinforcing plate 17 and the limiting groove 18 can be reduced, thereby allowing the upper clamping plate 13 and the lower clamping plate 14 to be more stably engaged with the limiting groove 18.

[0028] The working principle of this utility model is as follows: The operator fixes the connecting plate 5 to the right circumferential surface of the main spindle 1, and then rotates the first lead screw 6, the second lead screw 7, and the third lead screw 8 to rotate the first fixing plate 9, the second fixing plate 10, and the third fixing plate 11. This causes the first fixing plate 9, along with the upper clamping plate 13 and the lower clamping plate 14, to move to the right circumferential surface of the main spindle 1 away from the connecting plate 5. Similarly, the third fixing plate 11, along with the upper clamping plate 13 and the lower clamping plate 14, moves to the right circumferential surface of the main spindle 1 closer to the connecting plate 5. Then, the second fixing plate 10 is positioned between the first fixing plate 9 and the third fixing plate 11. Finally, the rotation... Block 16 rotates along with the bidirectional lead screw 15. During the rotation of the bidirectional lead screw 15, the upper clamping plate 13 and the lower clamping plate 14 move in opposite directions, causing the opposite sides of the upper clamping plate 13 and the lower clamping plate 14 to come into contact with the right circumferential surface of the spindle body 1. This clamps and fixes the spindle body 1, increasing the stability of the spindle body 1 journal and reducing the deformation of the spindle body 1. At the same time, a reinforcing plate 17 is symmetrically fixedly installed on the right circumferential surface of the spindle body 1 and then movably installed in the limiting groove 18. The reinforcing plate 17 can improve the robustness of the spindle body 1 journal.

[0029] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0030] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A deformation-resistant clamping mechanism, comprising a main shaft (1), characterized in that: A receiving shaft (2) is fixedly installed in the middle of the main shaft (1). A rotor (3) is fixedly installed at the left end of the main shaft (1). Impellers (4) are evenly fixedly installed on the circumferential surface of the main shaft (1). A connecting plate (5) is fixedly installed on the right circumferential surface of the main shaft (1). A first lead screw (6) is rotatably installed at the front right end of the connecting plate (5). A second lead screw (7) is rotatably installed at the upper right end of the connecting plate (5). A third lead screw (8) is rotatably installed at the rear right end of the connecting plate (5). A first fixing plate (9) is threadedly connected to the circumferential surface of the first lead screw (6). The second lead screw (7) is threadedly connected to the circumferential surface of the second lead screw (7). A second fixing plate (10) is connected to the third fixing plate (11) threaded on the circumferential surface of the third screw (8). A guide rod (12) is fixedly installed on the left side inside the first fixing plate (9), the second fixing plate (10) and the third fixing plate (11). An upper clamping plate (13) is movably sleeved on the upper side of the circumferential surface of the guide rod (12). A lower clamping plate (14) is movably sleeved on the lower side of the circumferential surface of the guide rod (12). A bidirectional screw (15) is threadedly connected to the right side of the first fixing plate (9), the second fixing plate (10) and the third fixing plate (11). A rotating block (16) is fixedly installed at the upper end of the bidirectional screw (15).

2. The anti-deformation clamping mechanism according to claim 1, characterized in that: A reinforcing plate (17) is symmetrically fixedly installed on the right circumferential surface of the main shaft (1). A limiting groove (18) is opened in the middle of the opposite side of the upper clamping plate (13) and the lower clamping plate (14). The reinforcing plate (17) is movably installed in the limiting groove (18).

3. The anti-deformation clamping mechanism according to claim 1, characterized in that: The first lead screw (6), the second lead screw (7) and the third lead screw (8) are provided with connecting holes evenly distributed on their circumferential surfaces, and the connecting holes are respectively adapted to the first fixing plate (9), the second fixing plate (10) and the third fixing plate (11).

4. The anti-deformation clamping mechanism according to claim 1, characterized in that: The maximum inner diameter of the upper clamping plate (13) and the lower clamping plate (14) is greater than the maximum outer diameter of the right side of the main shaft (1).

5. The anti-deformation clamping mechanism according to claim 1, characterized in that: The upper end of the bidirectional lead screw (15) passes through the circumferential surfaces of the first fixing plate (9), the second fixing plate (10) and the third fixing plate (11).

6. The anti-deformation clamping mechanism according to claim 2, characterized in that: The vertical cross-sectional dimensions of the reinforcing plate (17) are the same as those of the limiting groove (18).

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