Generator puller

Abstract

The utility model provides a special tool of generator draws out rotor belongs to generator maintenance technical field, including generator casing and rotor, and the rotor is inlaid in the inner chamber of generator casing along the direction of horizontal direction and is inserted, it further includes: support assembly, guide post, moving plate, adjusting seat, support rod and clamping plate, the guide post is connected with support assembly, and the guide post is straightly arranged along the direction of horizontal direction, moving plate is slidably sleeved on the guide post, adjusting seat is fixedly installed at the bottom of moving plate, support rod is provided with two, and two support rods are distributed with adjusting seat as the week symmetry. The utility model is provided with the guiding function for the rotor extraction, can guarantee that the rotor always keeps the displacement in the horizontal direction in the process of separating from the inner chamber of generator casing, avoids the end of the rotor sinking and affecting the extraction of the part of not separating, can guarantee the part of not separating of the rotor along the horizontal direction smoothly drawing out, avoids the scratch with generator casing and affects the maintenance.

Description

Technical Field

[0001] This utility model belongs to the field of generator maintenance technology, specifically relating to a special tool for removing and puncturing the rotor of a generator. Background Technology

[0002] The generator rotor is supported by sliding bearings at the regulating and excitation ends. When carrying out generator maintenance work, the generator rotor needs to be pulled out from inside the generator stator in order to inspect the stator and rotor cores.

[0003] In related technology (Chinese utility model patent with announcement number CN217394841U), a special tool for extracting a generator rotor is disclosed, including a first support unit, a fixed base plate, fixed frames disposed on both sides of the top of the fixed base plate, a connecting plate disposed between the two fixed frames, a main body unit disposed on the top left side of the fixed base plate, a slider unit disposed at the bottom of the inner cavity of the main body unit, and a transmission unit disposed at the lower end between the two fixed frames. The transmission unit drives the rotor body to move outward of the outer shell, and the rotor body drives the sliding plate to move to one side. The sliding plate is made of 4 mm thick steel plate, which allows the sliding plate to withstand the weight of the rotor body without deformation. At the same time, by activating a cylinder, the cylinder drives the movable plate and the movable rod to move up and down, and the movable rod drives the support plate to move up and down to adjust the support height, avoiding instability of the rotor body, thereby ensuring the safety of the rotor body and the iron core.

[0004] In current generator rotor extraction and inspection operations, because the rotor itself has a certain mass, the rotor is pulled by lifting ropes alone. There is a lack of a pulling guide mechanism for the rotor ends. As a result, the end of the rotor that is pulled out of the generator body first is prone to sinking. This sinking problem then has an adverse effect on the part of the rotor that has not yet been pulled out of the generator body, hindering its smooth extraction and causing great inconvenience to generator maintenance work. Utility Model Content

[0005] To address the problem in existing generator rotor removal and inspection techniques that rely solely on hoisting ropes, the lack of a guiding mechanism for the rotor's extraction leads to the initial detachment sinking, hindering the extraction of the remaining portion and causing significant inconvenience for generator maintenance. This invention provides a specialized tool for removing generator rotors, incorporating a guiding function to ensure the rotor maintains a horizontal displacement throughout its detachment from the generator housing. This prevents the initial detachment from sinking and affecting the extraction of the remaining portion, and ensures the remaining portion is smoothly extracted horizontally, avoiding friction with the generator housing and ensuring smooth maintenance. The specific technical solution is as follows:

[0006] A special tool for extracting a generator rotor includes a generator housing and a rotor, the rotor being horizontally insertable and detachable within the inner cavity of the generator housing. It also includes: a support assembly; a guide post, a movable plate, an adjusting seat, support rods, and a clamping plate. The guide post is connected to the support assembly and is horizontally aligned. The movable plate is slidably fitted onto the guide post. The adjusting seat is fixedly installed at the bottom end of the movable plate. Two support rods are provided, symmetrically distributed around the adjusting seat. The clamping plate is installed at the free end of the support rods.

[0007] The two clamping plates are tightly fitted and positioned on the right end side wall of the rotor.

[0008] In the above technical solution, the shape of the clamping plate is set to arc.

[0009] In the above technical solution, the distance between the two clamping plates can be adjusted by an adjustment assembly, which includes: a groove, a lead screw, a slider, and a moving block. The groove is formed on the lower surface of the adjustment seat; the lead screw is rotatably connected to the inner cavity of the groove, and the lead screw is symmetrically provided with external threads in opposite directions; two sliders are provided, and the two sliders are symmetrically threaded onto the lead screw; the moving block is installed at the bottom end of the slider.

[0010] The support rod is vertically installed on the side wall of the movable block.

[0011] In the above technical solution, the front end of the lead screw extends out of the side wall of the adjustment seat and is equipped with a drive block, and the drive block has a through hole.

[0012] In the above technical solution, the support assembly includes: a base, an I-beam, a mounting plate, and a vertical plate. The base is connected to the right end of the guide column, and the guide column is perpendicular to the left side wall of the base. Two I-beams are provided, and the two I-beams are respectively installed on the front and rear side walls of the base. Two mounting plates are provided, and the two mounting plates are arranged correspondingly above and below each other. The mounting plate at the top is fixedly connected to the bottom end of the I-beam. The vertical plate is vertically installed between the two mounting plates.

[0013] The above technical solution also includes a reinforcing plate, which is vertically installed between the two mounting plates and is vertically connected to the side wall of the upright plate.

[0014] The above technical solution also includes: a gantry crane, an electric hoist, and a lifting rope. The gantry crane is arranged along the length of the generator casing; the electric hoist is movably arranged at the gantry crane; one end of the lifting rope is connected to the electric hoist, and the other end of the lifting rope is sleeved on the rotor.

[0015] In the above technical solution, the cross-section of the guide column is set to rectangle.

[0016] In the above technical solution, two guide posts are provided, and the two guide posts are symmetrically distributed relative to the moving plate.

[0017] The generator rotor extraction tool of this utility model has the following advantages compared with the prior art:

[0018] I. In the process of removing and inspecting the motor rotor, the rotor is pulled by a hoisting rope alone. Due to the lack of an end-pulling guide mechanism, the end of the rotor that detaches first tends to sink, affecting the extraction of the remaining part and causing great inconvenience to generator maintenance. This utility model is equipped with a rotor extraction guide function, which can ensure that the rotor maintains horizontal displacement throughout the process of detaching from the generator housing cavity. This avoids the problem of the end of the rotor that detaches first sinking and affecting the extraction of the remaining part. Furthermore, it can ensure that the remaining part of the rotor is smoothly extracted in the horizontal direction, avoiding scratches with the generator housing and affecting maintenance.

[0019] Second, in the technical solution of this utility model, two sets of clamping plates are used to tightly clamp the end of the rotor, thereby achieving effective support for the end of the rotor. When the rotor is displaced to the right due to force, the support rod and the moving plate can be driven to move to the right synchronously, providing precise guidance for the end of the rotor to detach from the generator body first. This ensures that the rotor always moves smoothly and linearly in the horizontal direction throughout the entire extraction process, effectively avoiding operational obstacles and potential equipment damage caused by end sinking or offset, and improving the stability and reliability of operation.

[0020] Third, in this utility model, the distance between the two clamping plates can be adjusted to adapt to the needs of extraction positioning and guidance of rotors of different specifications. Compared with two sets of clamping plates in a fixed position, which can only achieve the positioning and guidance function of clamping plates of fixed specifications, this enhances the flexibility of the device, significantly improves its adaptability to the needs of rotor extraction operation under various working conditions, and effectively expands the application range of the device.

[0021] Fourth, in this utility model, the guide column with a rectangular cross-section design structurally ensures that the moving plate can always maintain an upright state when moving relative to the guide column, effectively avoiding tilting. The two sets of symmetrically distributed guide columns construct a stable mechanical support system, providing a solid foundation for the horizontal movement of the moving plate. When the moving plate moves smoothly, it further drives the adjusting seat and the clamping plate connected to it to move precisely and straight in the horizontal direction, ensuring the stability and reliability of the entire mechanical operation process, and providing a strong guarantee for the efficient implementation of the rotor straight extraction operation. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the generator housing of this utility model;

[0023] Figure 2 This is a schematic diagram of the lifting rope of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the base of this utility model;

[0025] Figure 4 This is a bottom view of the tank structure of this utility model;

[0026] Figures 1 to 4 In the middle, 1. Generator housing, 2. Rotor, 3. Base, 4. Guide column, 5. Moving plate, 6. Adjusting seat, 7. Slot, 8. Lead screw, 9. Sliding block, 10. Moving block, 11. Support rod, 12. Clamping plate, 13. Drive block, 14. Insertion hole, 15. I-beam, 16. Vertical plate, 17. Mounting plate, 18. Reinforcing plate, 19. Gantry crane, 20. Electric hoist, 21. Lifting rope. Detailed Implementation

[0027] The following are specific implementation cases and appendices. Figures 1 to 4 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0028] This generator rotor extraction tool includes a generator housing 1 and a rotor 2. The rotor 2 can be easily inserted and removed horizontally from the inner cavity of the generator housing 1. In actual operation, this tool can fully utilize its efficiency when it is necessary to disassemble the rotor 2 from the generator housing 1. The tool is equipped with a support assembly, as well as key components such as guide columns 4, a moving plate 5, an adjusting seat 6, a support rod 11, and a clamping plate 12. The guide columns 4 are firmly connected to the support assembly and are arranged horizontally. The cross-section of the guide columns 4 is rectangular. This ingenious design fundamentally ensures that the moving plate 5 can always maintain an upright state when moving relative to the guide columns 4, effectively avoiding tilting. Moreover, there are two guide columns 4, and the two guide columns 4 are symmetrically distributed relative to the moving plate 5. The two sets of symmetrically distributed guide columns 4 construct a stable mechanical support system for the horizontal movement of the moving plate 5. The movement provides a solid foundation for stability. When the moving plate 5 moves smoothly, it further drives the adjusting seat 6 and the clamping plate 12 connected to it to move precisely and straight in the horizontal direction, ensuring the stability and reliability of the entire mechanical operation process. This effectively ensures that the rotor 2 can be pulled out efficiently in a straight state. This structural design effectively solves the problem that in the motor rotor extraction and inspection operation, the traditional method of pulling the rotor with a hoisting rope lacks an end extraction guide mechanism, which causes the end of the rotor that detaches first to sink, thus affecting the extraction of the part that has not detached, and causing great inconvenience to the generator maintenance. This equipment can ensure that the rotor 2 maintains horizontal displacement during the process of detaching from the inner cavity of the generator housing 1, avoiding the problem of the end of the rotor 2 that detaches first sinking and affecting the extraction of the part that has not detached. At the same time, it avoids the part of the rotor 2 that has not detached from the generator housing 1 from rubbing against it, ensuring that the maintenance work is carried out smoothly.

[0029] Specifically, the movable plate 5 is slidably sleeved on the guide column 4, enabling its subsequent flexible movement; the adjusting seat 6 is fixedly installed at the bottom of the movable plate 5, and when the movable plate 5 moves, the adjusting seat 6 also moves synchronously; there are two support rods 11, symmetrically distributed around the adjusting seat 6; the clamping plate 12 is installed at the free end of the support rod 11, and the shape of the clamping plate 12 is set as arc, with the two clamping plates 12 tightly fitted and positioned at the right end side wall of the rotor 2; by tightly clamping the end of the rotor 2 with the two sets of clamping plates 12, effective support for the end of the rotor 2 is achieved; when the rotor 2 is subsequently displaced to the right due to force, it can drive the support rod 11 and the movable plate 5 to move synchronously to the right, providing precise guidance for the end of the rotor 2 to detach from the generator body first, ensuring that the rotor 2 always moves smoothly and linearly in the horizontal direction throughout the entire extraction process, effectively avoiding operational obstacles and potential equipment damage caused by end sinking or offset, and greatly improving the stability and reliability of operation.

[0030] The distance between the two clamping plates 12 can be flexibly adjusted by an adjustment assembly; the adjustment assembly includes a groove 7, a lead screw 8, a slider 9, and a moving block 10; the groove 7 is located on the lower surface of the adjustment seat 6, providing space for the installation of subsequent components; the lead screw 8 is rotatably connected to the inner cavity of the groove 7 via a bearing, and the lead screw 8 has symmetrically arranged external threads in opposite directions; there are two sliders 9, symmetrically arranged and threaded onto the lead screw 8; the moving block 10 is installed at the bottom end of the slider 9, and the support rod 11 is vertically installed on the side wall of the moving block 10; by rotating the lead screw 8, due to the characteristics of its external thread, the two sliders 9 will move relative to or opposite to each other along the lead screw 8, thereby realizing the adjustment of the distance between the two clamping plates 12; The front end of the rod 8 extends out of the side wall of the adjusting seat 6 and is equipped with a drive block 13. The drive block 13 has a through hole 14, which allows the operator to insert a tool into the through hole 14 to rotate the drive block 13, thereby rotating the lead screw 8, which further improves the convenience of adjustment. This adjustable spacing design allows the equipment to adapt to the needs of rotor 2 extraction and positioning guidance of different specifications. Compared with the two sets of clamps 12 in fixed positions, which can only achieve the positioning and guiding function of rotor 2 of fixed specifications, this utility model significantly enhances the flexibility of the device, greatly improves its adaptability to the needs of rotor 2 extraction operation under various working conditions, and effectively expands the application range of the device.

[0031] The support assembly includes a base 3, an I-beam 15, a mounting plate 17, and a vertical plate 16. The base 3 is connected to the right end of the guide column 4, and the guide column 4 is perpendicular to the left side wall of the base 3. This connection method ensures the horizontal stability of the guide column 4. Two I-beams 15 are provided and installed on the front and rear side walls of the base 3, respectively, providing reliable connection points for the installation of subsequent components. Two mounting plates 17 are provided, corresponding to each other, with the top mounting plate 17 fixedly connected to the bottom end of the I-beam 15. The vertical plate 16 is vertically installed between the two mounting plates 17, further enhancing the stability and structural strength of the support assembly. In addition, a reinforcing plate 18 is included, which is vertically installed between the two mounting plates 17 and vertically connected to the side wall of the vertical plate 16. The cooperation of multiple components enables the support assembly to withstand greater pressure and weight, providing a solid guarantee for the stable operation of the entire equipment.

[0032] The equipment is also equipped with a gantry crane 19, an electric hoist 20, and a lifting rope 21. The gantry crane 19 is set along the length of the generator casing 1, providing a track for the movement of the electric hoist 20. The electric hoist 20 is moved at the gantry crane 19 and can move flexibly on the gantry crane 19. One end of the lifting rope 21 is connected to the electric hoist 20, and the other end is sleeved on the rotor 2. During the process of pulling the rotor through, it can provide additional traction and guidance to the rotor 2, further ensuring the accuracy and stability of the operation.

[0033] It is worth noting that in this application, the generator housing 1 and rotor 2 are existing technology components, which are the same as the housing and rotor body in Chinese utility model patent with publication number CN217394841U. They will not be described or limited here. The lead screw 8 is a self-locking lead screw 8 available on the market. It can self-lock when it stops rotating and will not be affected by external forces to rotate. Its outer wall is provided with symmetrical and opposite external threads. It is a commonly used model on the market. It will not be described or limited here. The gantry crane 19 is a commonly used gantry crane on the market, and the electric hoist 20 is a commonly used component of the gantry crane 19. Both are commonly used components on the market. They only need to meet the usage requirements of driving the electric hoist 20 in the corresponding direction in this application. The model of the above-mentioned existing components will not be limited or described in detail here.

[0034] The working principle of the generator rotor extraction tool in this embodiment is as follows:

[0035] First, the rotor 2 is connected to the clamping plate 12: the rod-shaped tool passes through the insertion hole 14, and the driving block 13 drives the lead screw 8 to rotate, so that the two sliders 9 symmetrically arranged on the lead screw 8 gradually move closer, so that the two sets of moving blocks 10, support rods 11 and clamping plates 12 gradually move closer, until the two sets of clamping plates 12 are tightly attached and positioned at the right end of the rotor 2, thereby achieving a stable connection between the two clamping plates 12 and the right end of the rotor 2.

[0036] The electric hoist 20 moves to the right along the length of the gantry crane 19, driving the hoisting rope 21 to drive the rotor 2 to move to the right. At this time, the clamping plate 12 drives the support rod 11, the moving block 10, the adjusting seat 6, and the moving plate 5 to move to the right at the same time. The moving plate 5 maintains horizontal movement under the guiding and limiting action of the two guide columns 4, which ensures that the first part of the rotor 2 is pulled out is guided by the horizontal direction and maintains stable movement, so as not to cause the right end of the rotor 2 to sink downward, thereby ensuring that the rotor 2 can continue to be pulled out of the inner cavity of the generator housing 1 in the horizontal direction.

[0037] This utility model is equipped with a guiding function for the extraction of rotor 2, which can ensure that rotor 2 maintains horizontal displacement during the process of detaching from the inner cavity of generator housing 1, avoids the problem of the end of rotor 2 sinking first and affecting the extraction of the part that has not detached, and can also ensure that the part of rotor 2 that has not detached is smoothly extracted in the horizontal direction, avoiding scratching with generator housing 1 and affecting maintenance.

[0038] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0039] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0040] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.

[0041] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0042] Unless otherwise stated, the term "multiple" means two or more.

[0043] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0044] The term "and / or" describes the relationship between objects, indicating that there can be three relationships. For example, A and / or B means: A or B, or A and B.

[0045] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A special tool for extracting and removing the rotor of a generator, comprising a generator housing (1) and a rotor (2), wherein the rotor (2) is horizontally insertable and detachable within the cavity of the generator housing (1), characterized in that: Also includes: Support components; Guide post (4), the guide post (4) is connected to the support assembly, and the guide post (4) is set straight in the horizontal direction; The movable plate (5) is slidably sleeved on the guide post (4); Adjustment seat (6), the adjustment seat (6) is fixedly installed at the bottom end of the movable plate (5); Support rod (11), two support rods (11) are provided, and the two support rods (11) are symmetrically distributed around the adjusting seat (6); A clamping plate (12) is installed at the free end of the support rod (11); The two clamps (12) are tightly fitted and positioned on the right side wall of the rotor (2).

2. The special tool for extracting and piercing the rotor of a generator according to claim 1, characterized in that: The shape of the clamp (12) is set to be arc-shaped.

3. The special tool for extracting and piercing the rotor of a generator according to claim 1, characterized in that: The distance between the two clamps (12) can be adjusted by an adjustment assembly, the adjustment assembly comprising: The groove (7) is located on the lower surface of the adjusting seat (6); A lead screw (8) is rotatably connected to the inner cavity of the groove (7), and the lead screw (8) is symmetrically provided with external threads in opposite directions; Slider (9), two sliders (9) are provided, and the two sliders (9) are symmetrical and threaded onto the lead screw (8); A movable block (10) is mounted on the bottom end of the slider (9); The support rod (11) is vertically installed on the side wall of the movable block (10).

4. The special tool for extracting and piercing the rotor of a generator according to claim 3, characterized in that: The front end of the lead screw (8) extends out of the side wall of the adjusting seat (6) and is equipped with a drive block (13), and the drive block (13) has a through hole (14).

5. The special tool for extracting and piercing the rotor of a generator according to claim 1, characterized in that: The support components include: The seat (3) is connected to the right end of the guide post (4), and the guide post (4) is perpendicular to the left side wall of the seat (3). I-beams (15), two I-beams (15) are provided, and the two I-beams (15) are respectively installed on the front and rear side walls of the base (3); Mounting plate (17), there are two mounting plates (17), and the two mounting plates (17) are arranged vertically and vertically, and the mounting plate (17) at the top is fixedly connected to the bottom end of the I-beam (15); A vertical plate (16) is vertically installed between two mounting plates (17).

6. The special tool for extracting and piercing the rotor of a generator according to claim 5, characterized in that: Also includes: A reinforcing plate (18) is vertically installed between two mounting plates (17) and is vertically connected to the side wall of the upright plate (16).

7. The special tool for removing and inserting the rotor of a generator according to claim 1, characterized in that: Also includes: A gantry crane (19) is provided along the length of the generator housing (1); An electric hoist (20) is movably mounted at the gantry crane (19); The hoisting rope (21) is connected at one end to the electric hoist (20) and at the other end to the rotor (2).

8. The special tool for removing and inserting the rotor of a generator according to claim 1, characterized in that: The cross-section of the guide post (4) is set to rectangle.

9. The special tool for removing and inserting the rotor of a generator according to claim 1, characterized in that: There are two guide posts (4), and the two guide posts (4) are symmetrically distributed with respect to the moving plate (5).

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