Generator bearing bush dismounting device

Abstract

The utility model provides a generator bearing bush dismounting device which comprises a hoisting column and hoisting equipment, a rigging of the hoisting equipment is connected with the upper end of the hoisting column, the hoisting column is located on one side of a housing of a generator and located above a rotating shaft of the generator, and the lower end of the hoisting column extends horizontally to form a connecting part. And the connecting part can extend into a gap between the housing of the generator and the rotating shaft and is connected with the end part of the bearing bush. According to the hoisting device, the connecting part at the lower end of the hoisting column horizontally extends into the gap between the housing and the rotating shaft of the generator and is fixedly connected with the end part of the bearing bush, so that the horizontal traction force of hoisting equipment is transmitted to the bearing bush, the deflection of the bearing bush is reduced, the bearing bush is prevented from being jammed, and the bearing bush can stably move along the horizontal axial direction; the dismounting efficiency is improved, and the shaft neck is prevented from being damaged; a crane can be adopted as hoisting equipment, a hoisting point does not need to be welded on the housing of the generator, operation is convenient, and damage to the housing caused by dismounting work is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of generator maintenance auxiliary devices, in particular to a generator bearing bush disassembly device. Background Art

[0002] Bearings are essential components for thermal power plant generators. Their smooth inner surface contacts the shaft neck, supporting the rotating shaft. Generator bearings are located within the generator housing and bolted to the housing. To disassemble, first remove the bolts securing the bearings. Then, move the bearings axially away from the housing until they are free from the shaft. Bearings are heavy, and while inside the generator housing, they lack a firm footing, making them difficult to manually pull axially.

[0003] The conventional method involves welding a lifting point to the generator housing above the bearing, attaching a hand chain hoist to the lifting point, and using the hoist's hook to connect the bearing to the generator housing. The bearing is then slowly removed from the generator housing. During this removal process, tension acts on the end of the bearing, generating a torque that can easily cause the bearing to deflect and become stuck on the journal. This necessitates repeated lifting and lowering, each movement requiring only a small distance. This is time-consuming and inefficient, and can also damage the journal. Utility Model Content

[0004] The technical problem to be solved by the utility model is: how to improve the disassembly efficiency of the generator bearing bush.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] The utility model provides a generator bearing disassembly device, comprising a lifting column and a lifting device, wherein the rigging of the lifting device is connected to the upper end of the lifting column, the lifting column is located on one side of the generator cover and above the generator shaft, and the lower end of the lifting column is horizontally extended with a connecting portion, which can be extended into the gap between the generator cover and the shaft and connected to the end of the bearing.

[0007] The beneficial effects of the utility model are:

[0008] By adopting the utility model, the connection part at the lower end of the lifting column extends horizontally into the gap between the generator cover and the rotating shaft, and is fixedly connected to the end of the bearing shell, so that the horizontal traction force of the lifting equipment is transmitted to the bearing shell, the deflection of the bearing shell is reduced, the bearing shell is avoided from being stuck, and the bearing shell can be moved stably along the horizontal axis; the disassembly efficiency is improved and the damage to the shaft neck is avoided; the lifting equipment can use a crane, and there is no need to weld lifting points on the generator cover, the operation is convenient, and the damage to the cover shell caused by the disassembly work is avoided.

[0009] On the basis of the above technical solution, the present invention can also be improved as follows.

[0010] Furthermore, the connecting portion is connected to the bearing shell via bolts.

[0011] The original fastening bolts of the bearing shell can be used. When connecting, the connecting part is fixed to the original bolt hole of the bearing shell, which is convenient for disassembly and assembly without damaging the bearing shell.

[0012] Furthermore, the connecting part includes a horizontal connecting plate and a vertical connecting plate, one edge of the horizontal connecting plate is connected to the lower end of the lifting column, and the other edge of the horizontal connecting plate is connected to the upper part of the vertical connecting plate. The vertical connecting plate is provided with multiple bolt holes, and the bolts are connected to the bearing after passing through the bolt holes on the vertical connecting plate.

[0013] The vertical connecting plate can fit into the end face of the bearing, has good stability, improves the rigidity of the connection, and facilitates the transmission of the above-mentioned second torque to the bearing; the bolt holes on the vertical connecting plate correspond to the bolt holes on the bearing, which facilitates the use of multiple bolts to bear the force together and reduces stress.

[0014] Furthermore, the horizontal connecting plate is trapezoidal, the long bottom side of the horizontal connecting plate is connected to the vertical connecting plate, and the short bottom side of the horizontal connecting plate is connected to the hanging column.

[0015] The connection strength is improved, and the fracture of the welding parts between the horizontal connection plate and the vertical connection plate or the hanging column is avoided.

[0016] Furthermore, the lower end of the hanging column is cylindrical, the short bottom side of the horizontal connecting plate is semicircular, and the short bottom side of the horizontal connecting plate is buckled and welded to one side of the lower end of the hanging column.

[0017] It is convenient to increase the weld length and improve the connection strength.

[0018] Furthermore, the vertical connecting plate is arc-shaped, and the center of the vertical connecting plate coincides with the axis of the bearing shell.

[0019] A plurality of bolt holes can be provided on the vertical connecting plate and correspond one by one to the bolt holes on the bearing bush, thereby avoiding interference between the middle portion of the lower edge of the vertical connecting plate and the rotating shaft.

[0020] Furthermore, a reinforcing plate is provided at the lower portion of the hanging column. The reinforcing plate is located above the vertical connecting plate, and the reinforcing plate is fixedly connected to the vertical connecting plate.

[0021] The vertical connecting plates are connected by the reinforcing plates and the horizontal connecting plates, thereby improving the structural strength and avoiding fracture at the welding position between the vertical connecting plates and the horizontal connecting plates.

[0022] Furthermore, the reinforcing plate is L-shaped, one end of the reinforcing plate extends horizontally and is fixedly connected to the lower part of the hanging column, and the other end of the reinforcing plate extends downward and is fixedly connected to the vertical connecting plate.

[0023] It is convenient to increase the distance between the reinforcement plate and the horizontal connecting plate, thereby improving the structural stability.

[0024] Furthermore, one end of the reinforcing plate is welded to the lower part of the hanging column, and the other end of the reinforcing plate is welded to the vertical connecting plate.

[0025] Easy to assemble and high structural strength.

[0026] Furthermore, one edge of the horizontal connecting plate is welded to the lower end of the hanging column, and the other edge of the horizontal connecting plate is welded to the upper part of the vertical connecting plate.

[0027] Easy to assemble and high structural strength.

[0028] Furthermore, the lifting equipment is a crane; a lifting ring is provided at the upper end of the lifting column, and the lifting hook of the crane is connected to the lifting ring.

[0029] The crane is a standing equipment in the factory. It is easy to operate and does not require new equipment, thus saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of the present utility model.

[0031] Figure 2 for Figure 1 Left view of .

[0032] In the accompanying drawings, the technical features represented by the reference numerals are as follows:

[0033] 1-bearing; 2-lifting column; 3-connecting part; 4-lifting equipment; 5-rotating shaft; 6-cover; 7-horizontal connecting plate; 8-vertical connecting plate; 9-reinforcement plate; 10-lifting ring. DETAILED DESCRIPTION

[0034] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0035] This utility model refers to Figure 1-2 .

[0036] The utility model provides a generator bearing disassembly device, including a lifting column 2 and a lifting device 4, wherein the rigging of the lifting device 4 is connected to the upper end of the lifting column 2, and the lifting column 2 is located on one side of the generator cover 6 and above the generator shaft 5. The lower end of the lifting column 2 is horizontally extended with a connecting portion 3, and the connecting portion 3 can be extended into the gap between the generator cover 6 and the shaft 5 and connected to the end of the bearing 1.

[0037] principle:

[0038] The housing 6, shaft 5, and bearing 1 are all existing components of the generator. The smooth inner surface of the bearing 1 fits against the shaft 5. The end of the bearing 1 is provided with a flange structure, which is connected to the housing 6 via fastening bolts. The gap between the housing 6 and the shaft 5 accommodates the bearing 1 and the flange structure at the end of the bearing 1. The generator is conventional.

[0039] After removing the fastening bolts of the bearing bush 1, when disassembling the bearing bush 1, extend the connecting portion 3 of the lifting column 2 into the gap between the generator cover 6 and the shaft 5 and connect it to the end of the bearing bush 1; the lifting equipment 4 first pulls the lifting column 2 upward, and the upward lifting traction force generates a first torque on the bearing bush 1 ( Figure 1 The first moment causes the outer end of the bearing 1 to lift slightly; then the hoisting device 4 moves horizontally away from the generator, and the hoisting traction force on the hoisting column 2 generates a horizontal component force, which generates a second moment on the hoisting column 2 ( Figure 1 In the counterclockwise direction), the second torque is transmitted to the bearing 1, which can partially offset the first torque, reduce the deflection of the bearing 1, and avoid the two ends of the bearing 1 being stuck in the gap between the rotating shaft 5 and the cover 6; thus, under the traction of the horizontal movement of the lifting equipment 4, the bearing 1 can move stably along the horizontal axis until it leaves the cover 6 of the generator.

[0040] By adopting the utility model, the connecting portion 3 at the lower end of the lifting column 2 is horizontally extended into the gap between the generator cover 6 and the rotating shaft 5, and is fixedly connected to the end of the bearing 1, thereby transmitting the horizontal traction force of the lifting equipment 4 to the bearing 1, reducing the deflection of the bearing 1, avoiding the jamming of the bearing 1, and allowing the bearing 1 to move stably along the horizontal axis; improving the disassembly efficiency and avoiding damage to the journal; the lifting equipment 4 can use a crane, and there is no need to weld lifting points on the generator cover 6, which is easy to operate and avoids damage to the cover 6 caused by the disassembly work.

[0041] Furthermore, the connecting portion 3 is connected to the bearing shell 1 by bolts.

[0042] The original fastening bolts of the bearing shell 1 can be utilized. When connecting, the connecting portion 3 is fixed to the original bolt hole of the bearing shell 1, which is convenient for disassembly and assembly without destroying the bearing shell 1.

[0043] Further, such as Figure 2 As shown: the connecting part 3 includes a horizontal connecting plate 7 and a vertical connecting plate 8, one edge of the horizontal connecting plate 7 is connected to the lower end of the lifting column 2, and the other edge of the horizontal connecting plate 7 is connected to the upper part of the vertical connecting plate 8, and a plurality of bolt holes are provided on the vertical connecting plate 8, and the bolts pass through the bolt holes on the vertical connecting plate 8 and are connected to the bearing 1.

[0044] The vertical connecting plate 8 can be fitted to the end face of the bearing 1, has good stability, improves the rigidity of the connection, and facilitates the transmission of the above-mentioned second torque to the bearing 1; the bolt holes on the vertical connecting plate 8 correspond to the bolt holes on the bearing 1, which facilitates the use of multiple bolts to bear the force together and reduces stress.

[0045] Furthermore, the horizontal connecting plate 7 is trapezoidal in shape, the long bottom side of the horizontal connecting plate 7 is connected to the vertical connecting plate 8 , and the short bottom side of the horizontal connecting plate 7 is connected to the hanging column 2 .

[0046] The connection strength is improved, and the fracture of the welding parts of the horizontal connection plate 7 and the vertical connection plate 8 or the hanging column 2 is avoided.

[0047] Furthermore, the lower end of the hanging column 2 is cylindrical, the short bottom side of the horizontal connecting plate 7 is semicircular, and the short bottom side of the horizontal connecting plate 7 is buckled and welded to one side of the lower end of the hanging column 2.

[0048] It is convenient to increase the weld length and improve the connection strength.

[0049] Furthermore, the vertical connecting plate 8 is arc-shaped, and the center of the vertical connecting plate 8 coincides with the axis of the bearing shell 1 .

[0050] A plurality of bolt holes may be provided on the vertical connecting plate 8 , and correspond one by one to the bolt holes on the bearing bush 1 , thereby avoiding interference between the middle portion of the lower edge of the vertical connecting plate 8 and the rotating shaft 5 .

[0051] Furthermore, a reinforcing plate 9 is provided at the lower portion of the hanging column 2 . The reinforcing plate 9 is located above the vertical connecting plate 8 , and the reinforcing plate 9 is fixedly connected to the vertical connecting plate 8 .

[0052] The vertical connecting plates 8 are connected together by the reinforcing plates 9 and the horizontal connecting plates 7 , thereby improving the structural strength and preventing the vertical connecting plates 8 and the horizontal connecting plates 7 from being broken at the welding position.

[0053] Furthermore, the reinforcing plate 9 is L-shaped, one end of the reinforcing plate 9 extends horizontally and is fixedly connected to the lower part of the hanging column 2, and the other end of the reinforcing plate 9 extends downward and is fixedly connected to the vertical connecting plate 8.

[0054] This facilitates increasing the distance between the reinforcing plate 9 and the horizontal connecting plate 7 and improves structural stability.

[0055] Furthermore, one end of the reinforcing plate 9 is welded to the lower portion of the hanging column 2 , and the other end of the reinforcing plate 9 is welded to the vertical connecting plate 8 .

[0056] Easy to assemble and high structural strength.

[0057] Furthermore, one edge of the horizontal connecting plate 7 is welded to the lower end of the hanging column 2 , and the other edge of the horizontal connecting plate 7 is welded to the upper portion of the vertical connecting plate 8 .

[0058] Easy to assemble and high structural strength.

[0059] Furthermore, the hoisting device 4 is a crane; a lifting ring 10 is provided at the upper end of the hoisting column 2, and a lifting hook of the crane is connected to the lifting ring 10.

[0060] The crane is a standing equipment in the factory. It is easy to operate and does not require new equipment, thus saving costs.

[0061] In the description of the present invention, it should be understood that if there are descriptive terms indicating orientation, direction or positional relationship, such as: "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., the orientation or positional relationship indicated in this specification is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of understanding the present invention and simplifying the description, and does not indicate or imply that the referred part, element or whole 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.

[0062] In addition, if there are order description terms, such as "first", "second", etc., their use in this specification is to facilitate understanding or simplify the description. For example, in order to distinguish multiple technical features with the same type or function, but they have to be mentioned separately, this specification may use prefix or suffix order description terms to distinguish them. Therefore, it cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of such features. In the description of this utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0063] In the present invention, if terms describing the relative functional relationship of structures are used, such as "install", "connect", "connect", "fix", etc., they should be understood in a broad sense unless otherwise clearly specified and limited. For example, "install", "connect", "connect", etc. can be fixed connections, detachable connections, or integrated; can be mechanical connections or electrical connections; can be direct connections or indirect connections through an intermediate medium, can be internal connections between two elements or interactive relationships between two elements; "fix" can be fixed to form an integral body, or can be detachably fixed through fasteners; can be directly fixed or fixed through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above-mentioned descriptive terms in the present invention can be understood according to the specific circumstances, the context, the coherence of the preceding and following texts, etc.

[0064] In this utility model, if descriptive terms with ancillary or connecting meaning appear, for example, a first feature being "on" or "below" a second feature, these should not be interpreted as limiting unless otherwise expressly specified or limited. For example, "on" or "below" may refer to direct contact between the first and second features, or indirect contact between the first and second features through an intermediary. Those skilled in the art will understand the specific meanings of these descriptive terms in this utility model based on the specific circumstances, context, and coherence of the preceding and following texts.

[0065] Furthermore, when a first feature is “above,” “above,” or “above” a second feature, it may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. When a first feature is “below,” “below,” or “below” a second feature, it may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0066] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and combine the different embodiments, examples and features of different embodiments and examples described in this specification, unless there is any contradiction, and these combinations or combinations should all fall within the scope summarized by the present invention.

[0067] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are illustrative and cannot be understood as limiting the present invention. Changes, modifications, substitutions and variations of the above embodiments made by ordinary technicians in the field within the scope of information available from public channels and in combination with the technical inspiration given by the application documents are still within the scope of protection of the present application.

Claims

1. A generator bearing disassembly device, characterized by: The invention comprises a hoisting column (2) and a hoisting device (4), wherein the rigging of the hoisting device (4) is connected to the upper end of the hoisting column (2), the hoisting column (2) is located on one side of the generator housing (6) and above the generator shaft (5), and the lower end of the hoisting column (2) is provided with a connecting portion (3) extending horizontally, and the connecting portion (3) can extend into the gap between the generator housing (6) and the shaft (5) and be connected to the end of the bearing bush (1); The connecting portion (3) is connected to the bearing bush (1) via bolts; The connecting portion (3) includes a horizontal connecting plate (7) and a vertical connecting plate (8), one edge of the horizontal connecting plate (7) is connected to the lower end of the hanging column (2), and the other edge of the horizontal connecting plate (7) is connected to the upper part of the vertical connecting plate (8), and the vertical connecting plate (8) is provided with a plurality of bolt holes, and the bolts pass through the bolt holes on the vertical connecting plate (8) and are connected to the bearing bush (1); The vertical connecting plate (8) is arc-shaped, and the center of the vertical connecting plate (8) coincides with the axis of the bearing bush (1); A reinforcing plate (9) is further provided at the lower portion of the hanging column (2). The reinforcing plate (9) is located above the vertical connecting plate (8), and the reinforcing plate (9) is fixedly connected to the vertical connecting plate (8).

2. The generator bearing shell disassembly device according to claim 1, characterized in that: The horizontal connecting plate (7) is trapezoidal in shape, the long bottom side of the horizontal connecting plate (7) is connected to the vertical connecting plate (8), and the short bottom side of the horizontal connecting plate (7) is connected to the hanging column (2).

3. The generator bearing bush disassembly device according to claim 2, characterized in that: The lower end of the hanging column (2) is cylindrical, the short bottom side of the horizontal connecting plate (7) is semicircular, and the short bottom side of the horizontal connecting plate (7) is buckled and welded to one side of the lower end of the hanging column (2).

4. The generator bearing bush disassembly device according to claim 1, characterized in that: The reinforcing plate (9) is L-shaped, one end of the reinforcing plate (9) extends horizontally and is fixedly connected to the lower part of the hanging column (2), and the other end of the reinforcing plate (9) extends downward and is fixedly connected to the vertical connecting plate (8).

5. The generator bearing bush disassembly device according to claim 4, characterized in that: One end of the reinforcing plate (9) is welded to the lower part of the hanging column (2), and the other end of the reinforcing plate (9) is welded to the vertical connecting plate (8); one edge of the horizontal connecting plate (7) is welded to the lower end of the hanging column (2), and the other edge of the horizontal connecting plate (7) is welded to the upper part of the vertical connecting plate (8).

6. The generator bearing bush disassembly device according to claim 1, characterized in that: The hoisting device (4) is a crane; a lifting ring (10) is provided at the upper end of the hoisting column (2), and a lifting hook of the crane is connected to the lifting ring (10).

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