Support device for generator rotor maintenance

Abstract

The utility model discloses a supporting device for generator rotor maintenance, which comprises a bottom plate, and further comprises a supporting unit which comprises an axial adjusting assembly arranged at the upper end of the bottom plate and used for supporting a generator rotor, and a rotation switching assembly which is inserted into the upper part of the axial adjusting assembly in a sliding manner and used for axially rotating and guiding the rotor; and the jacking unit is arranged at the upper part of the rotary switching assembly and is used for limiting the rotor erected at the upper end of the rotary switching assembly. According to the utility model, the rotary switching assembly is finely adjusted along the axial direction of the rotor through the axial adjusting assembly, so that the rotary switching assembly can be aligned with a supporting part of the rotor, then the rotor is put down to the upper end of the rotary switching assembly, and in the whole adjusting process, the whole relatively heavy supporting device does not need to be moved and adjusted; and a large amount of manpower is saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to generator overhauls technical field, concretely is a kind of supporting device for generator rotor overhaul. BACKGROUND

[0002] Coal power unit energy saving and consumption reducing reconstruction, heating reconstruction and flexibility reconstruction all propose flexible operation requirement to generator, in recent years, with 600MW level water hydrogen hydrogen generator depth peak shaving, frequent start-stop and other flexible operation become new normal, domestic major power generation groups and power plant reflect that stator slot wedge loosening, stator coil end loosening, stator core loosening, temperature anomaly, stator end vibration, rotor interturn short circuit, rotor coil end deformation, hydrogen leakage, oil leakage and other abnormal conditions present multiple, serious situation, replacement stator coil, insulating water guide pipe, repair stator core and rotor return factory heavy insulation etc.

[0003] However, the existing supporting device for generator rotor overhaul usually adopts integral fixed type, cannot fine-tune the support part of supporting device along the axial direction of rotor, since the rotor shaft support parts of different generators are different, and the position of rotor placed by crane exists deviation each time, so that crane needs to move and adjust the entire supporting device along the axial direction of rotor according to the support part of rotor before placing the generator rotor needing overhaul on supporting device each time, a large amount of manpower is consumed.

[0004] In addition, during supporting the rotor by the existing supporting device, the upper part of rotor lacks corresponding limiting mechanism, and there is the risk of rotor falling off from the supporting device.

[0005] The above content is only used to assist understanding of the technical scheme of the application, and does not represent that the above content is the closest prior art. UTILITY MODEL CONTENT

[0006] The utility model aims at providing a kind of supporting device for generator rotor overhaul, to solve the problem that the existing supporting device usually adopts integral fixed type, cannot fine-tune the support part of supporting device along the axial direction of rotor, lead to consume a large amount of manpower each time to adjust the position of entire supporting device, in addition, the upper part of rotor lacks corresponding limiting mechanism, and there is the problem of rotor falling off from the supporting device.

[0007] To achieve the above object, the utility model provides the following technical scheme:

[0008] A kind of supporting device for generator rotor overhaul, including bottom plate, still include:

[0009] The support unit comprises an axial adjustment assembly arranged on the upper end of the base plate for supporting the generator rotor, and a rotation switching assembly slidingly connected to the upper portion of the axial adjustment assembly for guiding the axial rotation of the rotor;

[0010] The top-tightening unit is arranged on the upper portion of the rotation switching assembly for limiting the rotor arranged on the upper end of the rotation switching assembly.

[0011] Further, the axial adjustment assembly comprises:

[0012] The support frame is arranged in two groups and arranged on the upper portion of the base plate near the two ends for supporting the two ends of the generator rotor;

[0013] The guide plate is fixedly connected to the upper end of each group of support frames for guiding the fine adjustment of the rotation switching assembly;

[0014] The limiting plate is fixedly connected to the two ends of the guide plate for limiting the movement of the rotation switching assembly.

[0015] Further, the rotation switching assembly comprises:

[0016] The mounting frame is slidingly connected to the upper portion of the guide plate, and the lower end of the mounting frame located outside the guide plate is provided with a guide groove matched with the guide plate;

[0017] The guide roller is arranged in two groups inside the mounting frame for supporting the shaft of the generator rotor;

[0018] The first screw rod is threadedly connected inside the mounting frame between the two groups of guide plates for driving the mounting frame to adjust the position along the guide plate, and the inside of the mounting frame located outside the first screw rod is provided with a first screw hole matched with the first screw rod.

[0019] Further, the guide plate and the guide groove are both arranged in a T shape for limiting the mounting frame on the upper end of the support frame.

[0020] Further, one end of the first screw rod is fixedly connected with a first rotating rod for adjusting the rotation of the first screw rod;

[0021] The other end of the first screw rod is fixedly connected with a limiting ring, and the limiting ring is rotatably connected in one of the limiting plates for limiting the first screw rod.

[0022] Further, the top-tightening unit comprises:

[0023] The insertion rod is arranged in an n shape and slidingly connected inside the mounting frame near the two ends, and the inside of the mounting frame is provided with a sinking groove for accommodating the insertion rod;

[0024] The second threaded hole extends from one side of the mounting frame into the recessed groove;

[0025] The second screw is threaded into the second threaded hole and is used to tighten the insertion rod. The second screw is fixedly connected to a second rotating rod at one end relative to the insertion rod and is used to adjust the rotation of the second screw.

[0026] The support rod is provided in two sets, which are fixedly connected to both sides inside the insertion rod respectively, and a fixed shaft is fixedly connected to one end of the support rod;

[0027] The pressure roller is rotatably sleeved on the outside of the fixed shaft and is used to press the upper part of the generator rotor.

[0028] Furthermore, a reinforcing rod is fixedly connected to one end of the support rod relative to the fixed shaft, and the upper end of the reinforcing rod is fixedly connected to the top of the insertion rod to reinforce the support rod.

[0029] Compared with the prior art, the beneficial effects of this utility model are:

[0030] 1. This utility model uses an axial adjustment component to finely adjust the rotary switching component along the rotor's axial direction, so that the rotary switching component can be aligned with the rotor's support part. Then, the rotor is lowered to the top of the rotary switching component. The entire adjustment process does not require moving and adjusting the entire bulky support device, saving a lot of manpower. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0032] Figure 2 For the present utility model in Figure 1 Enlarged view of point A in the middle;

[0033] Figure 3 This diagram shows the fit between the support unit and the clamping unit of this utility model.

[0034] Figure 4 This is a schematic diagram of the internal structure of the rotary switching component of this utility model;

[0035] Figure 5 This is a schematic diagram of the axial adjustment component of this utility model.

[0036] Reference numerals: 100, base plate; 1, support unit; 11, rotation switching assembly; 111, mounting frame; 112, guide roller; 113, first threaded hole; 114, guide groove; 115, first screw; 1151, first rotating rod; 1152, limiting ring; 116, sinking groove; 117, second threaded hole; 12, axial adjustment assembly; 121, bracket; 122, limiting plate; 123, guide plate; 2, tightening unit; 21, insertion rod; 22, second screw; 221, second rotating rod; 23, support rod; 24, fixed shaft; 25, pressure roller; 26, reinforcing rod. Detailed Implementation

[0037] 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.

[0038] Please see Figures 1-5 This utility model provides a technical solution:

[0039] A support device for generator rotor maintenance includes a base plate 100, and further includes:

[0040] The support unit 1 includes an axial adjustment assembly 12 located on the upper end of the base plate 100 for supporting the generator rotor, and a rotation switching assembly 11 slidably connected to the upper part of the axial adjustment assembly 12 for axial rotation guidance of the rotor.

[0041] The clamping unit 2 is located on the upper part of the rotary switching assembly 11 and is used to limit the rotor mounted on the upper end of the rotary switching assembly 11.

[0042] It should be noted that when the crane lifts the generator rotor that needs to be inspected to the top of the support unit 1, if it is found that there is a deviation between the position of the rotor to be lowered and the position of the support unit 1, the rotary switching component 11 can be finely adjusted along the axis of the rotor by adjusting the axial component 12 so that the rotary switching component 11 can be aligned with the support part of the rotor. Then the rotor is lowered to the top of the rotary switching component 11. The entire adjustment process does not require moving and adjusting the entire relatively bulky support device, saving a lot of manpower.

[0043] Furthermore, after placing the rotor shaft on the upper end of the rotation switching assembly 11, the lower part of the clamping unit 2 is pushed downward into the rotation switching assembly 11, so that the clamping unit 2 is clamped against the upper end of the rotor shaft, ensuring that the rotor will not fall off the upper part of the rotation switching assembly 11 when the rotation switching assembly 11 adjusts the rotor rotation.

[0044] As an improvement, such as Figures 1-2 As shown, the axial adjustment assembly 12 includes;

[0045] The bracket 121 has two sets, which are respectively placed on the upper part of the base plate 100 near both ends, and are used to support both ends of the generator rotor.

[0046] Guide plates 123 are fixedly connected in two sets at the upper end of each set of brackets 121, and are used to guide the fine adjustment of the rotary switching assembly 11.

[0047] The limiting plate 122 is fixedly connected to both ends of the guide plate 123 and is used to limit the movement of the rotation switching assembly 11.

[0048] Furthermore, such as Figure 2 , Figure 4 As shown, the rotation switching component 11 includes:

[0049] Mounting frame 111 is slidably connected to the upper part of guide plate 123. The lower end of mounting frame 111 and located outside guide plate 123 is provided with guide groove 114 adapted to guide plate 123.

[0050] The guide rollers 112 are provided in two sets inside the mounting frame 111 for supporting the generator rotor shaft. A motor for driving the guide rollers 112 to rotate is installed on one side of the mounting frame 111. The motor is not shown in the figure.

[0051] The first screw 115 is threadedly connected inside the mounting frame 111 and located between the two sets of guide plates 123, and is used to drive the mounting frame 111 to adjust its position along the guide plates 123. The mounting frame 111 is provided with a first threaded hole 113 that matches the first screw 115 inside and outside the first screw 115.

[0052] Furthermore, both the guide plate 123 and the guide groove 114 are T-shaped, which serves to limit the mounting frame 111 to the upper end of the bracket 121.

[0053] Wherein, one end of the first screw 115 is fixedly connected to a first rotating rod 1151, which is used to adjust the rotation of the first screw 115;

[0054] The other end of the first screw 115 is fixedly connected to a limiting ring 1152, which is rotatably connected inside one of the limiting plates 122 to limit the first screw 115.

[0055] As an improvement, such as Figures 2-4 As shown, the clamping unit 2 includes:

[0056] The insertion rod 21 is shaped like n and slides up and down into the mounting frame 111 near both ends. The mounting frame 111 is provided with a recessed groove 116 for accommodating the insertion rod 21.

[0057] The second threaded hole 117 extends from one side of the mounting frame 111 into the recessed groove 116;

[0058] The second screw 22 is threaded into the second threaded hole 117 and is used to tighten the insertion rod 21. The second screw 22 is fixedly connected to one end of the insertion rod 21 with a second rotating rod 221 for rotating and adjusting the second screw 22.

[0059] The support rod 23 is provided in two sets, which are respectively fixedly connected to the two sides inside the insertion rod 21. One end of the support rod 23 is fixedly connected to a fixed shaft 24.

[0060] The pressure roller 25 is rotatably sleeved on the outside of the fixed shaft 24 and is used to press the upper part of the generator rotor.

[0061] Furthermore, a reinforcing rod 26 is fixedly connected to one end of the support rod 23 relative to the fixed shaft 24. The upper end of the reinforcing rod 26 is fixedly connected to the top of the insertion rod 21 to reinforce the support rod 23.

[0062] It should be noted that, in the specific implementation process of this utility model, if... Figures 1-3 , Figure 5 As shown, initially, the insertion rod 21 is not inserted into the sinking trough 116. When the crane lifts the rotor of the generator to be repaired directly above the two guide rollers 112, if there is an axial deviation between the rotor shaft and the corresponding mounting frame 111, the first rotating rod 1151 is rotated. The first rotating rod 1151 drives the first screw 115 to rotate. The first screw 115 drives the mounting frame 111 to move along the guide plate 123 under the action of the thread tangential force between the first threaded hole 113. When the mounting frame 111 moves to the position corresponding to the axial support of the rotor, the crane lowers the rotor between the two adjacent guide rollers 112 to complete the rotor lowering work. The entire adjustment process only requires fine adjustment of the mounting frame 111, without the need to adjust the bracket 121 as a whole, saving manpower.

[0063] like Figures 2-4As shown, after the rotor is lowered, the insertion rod 21 is inserted into the sinking groove 116 and pushed downward along the sinking groove 116. The insertion rod 21 drives the fixed shaft 24 to move downward through the support rod 23. The fixed shaft 24 drives the pressure roller 25 to press downward against the upper part of the rotor shaft, so that while the lower part of the rotor shaft is supported by the adjacent guide roller 112, the upper part of the rotor shaft is also pressed against by the two adjacent sets of pressure rollers 25. Then, the second rotating rod 221 is rotated, and the second rotating rod 221 drives the second screw 22 to rotate in the second threaded hole 117. Under the action of the thread tangential force between the second screw 22 and the second threaded hole 117, the insertion rod 21 is pressed and positioned, thereby avoiding the risk of the rotor shaft falling off the support device when the guide roller 112 drives the rotor shaft to rotate and switch positions.

[0064] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0065] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A support device for generator rotor maintenance, comprising a base plate (100), characterized in that, Also includes: The support unit (1) includes an axial adjustment assembly (12) located on the upper end of the base plate (100) for supporting the generator rotor, and a rotation switching assembly (11) slidably connected to the upper part of the axial adjustment assembly (12) for axial rotation guidance of the rotor. The clamping unit (2) is located on the upper part of the rotary switching assembly (11) and is used to limit the rotor mounted on the upper end of the rotary switching assembly (11).

2. The support device for generator rotor maintenance according to claim 1, characterized in that: The axial adjustment assembly (12) includes; The bracket (121) has two sets, which are respectively placed on the upper part of the base plate (100) near both ends, and are used to support both ends of the generator rotor; Guide plates (123) are fixedly connected to the upper end of each set of brackets (121) for guiding the fine adjustment of the rotary switching assembly (11); The limiting plate (122) is fixedly connected to both ends of the guide plate (123) and is used to limit the movement of the rotary switching assembly (11).

3. The support device for generator rotor maintenance according to claim 2, characterized in that: The rotation switching component (11) includes: The mounting frame (111) is slidably connected to the upper part of the guide plate (123). The lower end of the mounting frame (111) and the outer side of the guide plate (123) are provided with a guide groove (114) that is adapted to the guide plate (123). Guide rollers (112) are provided in two sets inside the mounting frame (111) for supporting the generator rotor shaft; The first screw (115) is threaded inside the mounting frame (111) and located between the two sets of guide plates (123), and is used to drive the mounting frame (111) to adjust its position along the guide plates (123). The mounting frame (111) is provided with a first threaded hole (113) that matches the first screw (115) inside and outside the first screw (115).

4. A support device for generator rotor maintenance according to claim 3, characterized in that: Both the guide plate (123) and the guide groove (114) are T-shaped, which is to limit the mounting frame (111) to the upper end of the bracket (121).

5. A support device for generator rotor maintenance according to claim 3, characterized in that: One end of the first screw (115) is fixedly connected to a first rotating rod (1151) for adjusting the rotation of the first screw (115); The other end of the first screw (115) is fixedly connected to a limiting ring (1152), which is rotatably connected inside one of the limiting plates (122) to limit the first screw (115).

6. A support device for generator rotor maintenance according to claim 3, characterized in that: The clamping unit (2) includes: The insertion rod (21) is n-shaped and slides up and down into the mounting frame (111) near both ends. The mounting frame (111) has a recessed groove (116) for accommodating the insertion rod (21). The second threaded hole (117) extends from one side of the mounting frame (111) into the recess (116); The second screw (22) is threaded into the second threaded hole (117) and is used to tighten the insert (21). The second screw (22) is fixedly connected to a second rotating rod (221) at one end relative to the insert (21) and is used to rotate and adjust the second screw (22). The support rod (23) is provided in two sets, which are fixedly connected to the two sides inside the insert rod (21) respectively. One end of the support rod (23) is fixedly connected to a fixed shaft (24); The pressure roller (25) is rotatably sleeved on the outside of the fixed shaft (24) and is used to press the upper part of the generator rotor.

7. A support device for generator rotor maintenance according to claim 6, characterized in that: The support rod (23) is fixedly connected to a reinforcing rod (26) at one end relative to the fixed shaft (24). The upper end of the reinforcing rod (26) is fixedly connected to the top of the insert rod (21) to reinforce the support rod (23).

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