Tool for overhauling bearing of steam turbine

Abstract

The utility model discloses a tool for overhauling a steam turbine bearing. The tool comprises a bottom plate, a mounting plate, a lifting mechanism and two sets of positioning mechanisms. One side of the bottom plate is arranged on the ground, the other side of the bottom plate is connected with one end of the lifting mechanism, the other end of the lifting mechanism is connected with the mounting plate, and the bottom plate and the mounting plate are arranged in parallel; each positioning mechanism comprises a side plate, a positioning plate and a moving assembly. The two side plates, the two positioning plates and the two moving assemblies are oppositely arranged. The two side plates are connected to the side, away from the bottom plate, of the mounting plate and located at the two ends of the mounting plate correspondingly. The two positioning plates are connected with the two side plates through moving assemblies correspondingly and are in sliding connection with the mounting plate. The two positioning plates are both configured to abut against the steam turbine bearing. The technical effect that the steam turbine bearing is more stable during overhauling is achieved, and the convenience of the steam turbine bearing during overhauling is improved.

Description

A tooling for overhauling steam turbine bearings Technical Field

[0001] This application relates to the field of turbine bearing maintenance technology, and in particular to a tooling for turbine bearing maintenance. Background Technology

[0002] Steam turbine bearings are an important component of steam turbines, mainly divided into two categories: support bearings and thrust bearings. Support bearings, also known as radial bearings, primarily support the weight of the rotor, determine its radial position, ensure concentricity between the rotor and stator, align the centerlines of all rotor components, and withstand the impact forces of rotor vibration. Lubrication minimizes frictional losses generated on the bearings during rotor operation.

[0003] After prolonged use, steam turbines require maintenance. When maintaining small and medium-sized steam turbines, it has been found that using a crane to lift and move the various components and place them on a designated maintenance platform for maintenance is inconvenient. This makes the turbine bearings unstable during maintenance, reducing the practicality of the tooling. Therefore, this application proposes a tooling for steam turbine bearing maintenance to solve the above problems. Summary of the Invention

[0004] This application provides a tooling solution for turbine bearing maintenance, which solves the problem in the prior art where it is inconvenient to position the turbine bearing, resulting in instability during maintenance and reducing the practicality of the tooling. This solution achieves a more stable turbine bearing during maintenance and improves the convenience of maintenance.

[0005] This utility model provides a tooling for overhauling turbine bearings, including a base plate, a mounting plate, a lifting mechanism, and two sets of positioning mechanisms. One side of the base plate is disposed on the ground, and the other side of the base plate is connected to one end of the lifting mechanism. The other end of the lifting mechanism is connected to the mounting plate, and the base plate and the mounting plate are arranged parallel to each other. Each of the two sets of positioning mechanisms includes a side plate, a positioning plate, and a moving component. The two side plates, the two positioning plates, and the two moving components are respectively arranged opposite to each other. The two side plates are each connected to the side of the mounting plate away from the base plate and are located at both ends of the mounting plate. The two positioning plates are respectively connected to the two side plates through the moving components and are slidably connected to the mounting plate. Both positioning plates are configured to abut against the turbine bearing.

[0006] In one possible implementation, the lifting mechanism includes a fixed plate, a first driving member, a first transmission assembly, a first screw, two hinged rods, and two threaded sleeves; the fixed plate has a cavity, the first screw is disposed in the cavity, and the first screw is rotatably connected to the fixed plate; the first driving member is disposed on the fixed plate, the output end of the first driving member is connected to one end of the first transmission assembly, and the other end of the first transmission assembly is connected to the first screw; the two threaded sleeves are spaced apart and rotatably connected to the first screw; one end of each of the two hinged rods is hinged to one of the two threaded sleeves, and the other end of each of the two hinged rods is connected to the mounting plate.

[0007] In one possible implementation, the moving component includes a second driving member, a second transmission component, a mounting sleeve, a second screw, a fixing block, and a mounting frame; the mounting frame is connected to the side plate; the mounting frame has a cavity, and the second transmission component is disposed within the cavity; the side plate has a through hole, one end of the second screw passes through the through hole and is connected to the positioning plate, and the other end of the second screw is fitted with the fixing block; the mounting sleeve is fitted onto the second screw and rotatably connected to the second screw, the mounting sleeve is disposed inside the mounting frame, and the inner side of the mounting sleeve has a thread that mates with the second screw; the second driving member is disposed on the mounting frame, the output end of the second driving member is connected to one end of the second transmission component, and the other end of the second transmission component is connected to the mounting shaft.

[0008] In one possible implementation, the lifting mechanism further includes four telescopic rods; the four telescopic rods are evenly arranged around the base plate, and the two ends of the four telescopic rods are respectively connected to the base plate and the mounting plate.

[0009] In one possible implementation, the first transmission component includes a first bevel gear and a second bevel gear; the first bevel gear meshes with the second bevel gear, and both the first bevel gear and the second bevel gear are disposed within the cavity; the first bevel gear is connected to the output end of the first drive member; and the second bevel gear is connected to the end of the first screw.

[0010] In one possible implementation, the second transmission component includes a first gear and a second gear; the first gear and the second gear mesh, and both the first gear and the second gear are disposed within the mounting bracket; the first gear is connected to the output end of the second drive member, and the first gear is sleeved on a rotating shaft, the rotating shaft being rotatably connected to the mounting bracket; the second gear is connected to the outside of the mounting sleeve.

[0011] In one possible implementation, the positioning mechanism further includes an anti-slip pad; the two positioning plates are both configured with an arc structure on their adjacent sides; the anti-slip pad is disposed at the arc structure and abuts against the turbine bearing.

[0012] One or more technical solutions provided in this application have at least the following technical effects:

[0013] This utility model embodiment employs a tooling for overhauling steam turbine bearings, comprising a base plate, a mounting plate, a lifting mechanism, and two sets of positioning mechanisms. One side of the base plate is positioned on the ground, and the other side of the base plate is connected to one end of the lifting mechanism. The other end of the lifting mechanism is connected to the mounting plate, and the base plate and mounting plate are arranged parallel to each other. The lifting mechanism enables the tooling to be raised and lowered, facilitating positioning operations for workers. Each of the two positioning mechanisms includes a side plate, a positioning plate, and a moving component. The two side plates, two positioning plates, and two moving components are respectively arranged opposite to each other. The two side plates are each connected to the side of the mounting plate away from the base plate and are located at both ends of the mounting plate. The two positioning plates are connected to the two side plates respectively through the moving components and are slidably connected to the mounting plate. Both positioning plates are configured to abut against the steam turbine bearing. The positioning plates enable the positioning of the steam turbine bearing, and the moving components allow for flexible adjustment according to the bearing's dimensions. This application solves the problem in the prior art that it is inconvenient to perform positioning processing on turbine bearings, which makes the turbine bearings unstable during maintenance and reduces the practicality of the tooling. It achieves a more stable technical effect for turbine bearings during maintenance and improves the convenience of turbine bearing maintenance. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 is an isometric view of a tooling for turbine bearing overhaul provided in an embodiment of this application;

[0016] Figure 2 is an isometric view of a tooling for turbine bearing overhaul provided in an embodiment of this application;

[0017] Figure 3 is an isometric view of the positioning mechanism provided in the embodiment of this application.

[0018] Icons: 1-Base plate; 2-Mounting plate; 3-Lifting mechanism; 31-Fixed plate; 32-First driving component; 33-First transmission assembly; 331-First bevel gear; 332-Second bevel gear; 34-First screw; 35-Hinge rod; 36-Screw sleeve; 37-Telescopic rod; 4-Positioning mechanism; 41-Side plate; 42-Positioning plate; 43-Moving assembly; 431-Second driving component; 432-Second transmission assembly; 4321-First gear; 4322-Second gear; 433-Mounting sleeve; 434-Second screw; 435-Mounting bracket; 436-Fixed block. Detailed Implementation

[0019] 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, not all, of the embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0020] In the description of the embodiments of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing the embodiments of this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this utility model can be understood according to the specific circumstances.

[0021] This utility model embodiment provides a tooling for overhauling turbine bearings, as shown in Figures 1-3. It includes a base plate 1, a mounting plate 2, a lifting mechanism 3, and two sets of positioning mechanisms 4. One side of the base plate 1 is positioned on the ground, and the other side of the base plate 1 is connected to one end of the lifting mechanism 3. The other end of the lifting mechanism 3 is connected to the mounting plate 2, and the base plate 1 and the mounting plate 2 are arranged parallel to each other. Each of the two sets of positioning mechanisms 4 includes a side plate 41, a positioning plate 42, and a moving component 43. The two side plates 41, the two positioning plates 42, and the two moving components 43 are respectively arranged opposite to each other. The two side plates 41 are each connected to the side of the mounting plate 2 away from the base plate 1 and are located at both ends of the mounting plate 2. The two positioning plates 42 are connected to the two side plates 41 respectively through the moving components 43 and are slidably connected to the mounting plate 2. Both positioning plates 42 are configured to abut against the turbine bearing.

[0022] For example, a limiting groove is provided on the mounting plate 2, and a limiting rod is connected to one end of the positioning plate 42 near the mounting plate 2. The limiting rod is set in the limiting groove and can slide within the limiting groove. By utilizing the cooperation between the limiting groove and the limiting rod, the positioning plate 42 can be limited when moving, making the positioning plate 42 more stable when moving.

[0023] For example, the tooling for turbine bearing maintenance also includes multiple rollers connected to the side of the base plate 1 near the ground to support the tooling and move it.

[0024] In this embodiment of the application, as shown in Figures 1-3, the lifting mechanism 3 includes a fixed plate 31, a first driving member 32, a first transmission assembly 33, a first screw 34, two hinge rods 35, and two threaded sleeves 36. The fixed plate 31 has a cavity, the first screw 34 is disposed in the cavity, and the first screw 34 is rotatably connected to the fixed plate 31. The first driving member 32 is disposed on the fixed plate 31, the output end of the first driving member 32 is connected to one end of the first transmission assembly 33, and the other end of the first transmission assembly 33 is connected to the first screw 34. The two threaded sleeves 36 are spaced apart and sleeved on the first screw 34, and are rotatably connected to the first screw 34. One end of each of the two hinge rods 35 is hinged to the two threaded sleeves 36, and the other end of each of the two hinge rods 35 is connected to the positioning plate 42.

[0025] For example, in use, the first drive unit 32 is activated to drive the first bevel gear 331 to rotate. Since the first bevel gear 331 and the second bevel gear 332 mesh with each other, the second bevel gear 332 drives the screw to rotate, which in turn drives the two screw sleeves 36 to move. The movement of the screw sleeves 36 can drive the hinge rod 35 to move. Therefore, with the cooperation of the telescopic rod 37, the hinge rod 35 drives the mounting plate 2 to move up and down, thereby achieving the purpose of lifting the turbine bearing, making the turbine bearing more convenient and efficient to maintain.

[0026] For example, the telescopic rod 37 has a self-locking function.

[0027] In this embodiment of the application, as shown in Figures 1-3, the moving component 43 includes a second driving member 431, a second transmission component, a mounting sleeve 433, a second screw 434, a fixing block 436, and a mounting frame 435; the mounting frame 435 is connected to the side plate 41; the mounting frame 435 has a cavity, and the second transmission component is disposed in the cavity; the side plate 41 has a through hole, one end of the second screw 434 passes through the through hole and is connected to the positioning plate 42, and the other end of the second screw 434 is fitted with the fixing block 436; the mounting sleeve 433 is fitted on the second screw 434 and is rotatably connected to the second screw 434, the mounting sleeve 433 is disposed inside the mounting frame 435, and the inner side of the mounting sleeve 433 has a thread that mates with the second screw 434; the second driving member 431 is disposed on the mounting frame 435, the output end of the second driving member 431 is connected to one end of the second transmission component, and the other end of the second transmission component is connected to the mounting shaft.

[0028] For example, in use, a crane is used to hoist the turbine bearing above the mounting plate 2. Then, the second drive unit 431 is activated to drive the first gear 4321 to rotate. Since the first gear 4321 and the second gear 4322 mesh with each other, under the limitation of the limit rail and the limit block, the second gear 4322 can drive the mounting sleeve 433 to rotate. Since the mounting sleeve 433 is threadedly connected to the second screw 434, the second screw 434 can drive the positioning plate 42 to move. The two positioning plates 42 can position the turbine bearing, thereby making the turbine bearing more stable during maintenance.

[0029] For example, the positioning plate 42 has an arc-shaped design, which makes the positioning effect of the turbine bearing better. At the same time, the inner side of the positioning plate 42 is provided with a plastic anti-slip pad, which makes it less likely to damage the turbine bearing when positioning the turbine bearing, thereby greatly improving the safety of the tooling during use.

[0030] In this embodiment of the application, as shown in Figures 1-3, the lifting mechanism 3 further includes four telescopic rods 37; the four telescopic rods 37 are evenly arranged around the base plate 1, and the two ends of the four telescopic rods 37 are respectively connected to the base plate 1 and the mounting plate 2.

[0031] In this embodiment of the application, as shown in Figures 1-3, the moving component 43 further includes a limiting track and a limiting block; the limiting track is connected to the mounting frame 435, the limiting block is connected to the outside of the mounting sleeve 433, and the limiting block is slidably connected to the limiting track.

[0032] For example, the inner diameter of the limiting track is larger than the outer diameter of the limiting block, and the limiting track and the limiting block form a sliding structure. In use, the mutual cooperation between the limiting track and the limiting block can limit the rotation of the rotating cavity, making the rotating cavity more stable during rotation.

[0033] In this embodiment of the application, as shown in Figures 1-3, the first transmission component 33 includes a first bevel gear 331 and a second bevel gear 332; the first bevel gear 331 meshes with the second bevel gear 332, and both the first bevel gear 331 and the second bevel gear 332 are disposed in a cavity; the first bevel gear 331 is connected to the output end of the first drive member 32; and the second bevel gear 332 is connected to the end of the first screw 34.

[0034] In this embodiment of the application, as shown in Figures 1-3, the second transmission component includes a first gear 4321 and a second gear 4322; the first gear 4321 and the second gear 4322 mesh, and both the first gear 4321 and the second gear 4322 are disposed within the mounting bracket 435; the first gear 4321 is connected to the output end of the second driving member 431, and the first gear 4321 is sleeved on the rotating shaft, and the rotating shaft is rotatably connected to the mounting bracket 435; the second gear 4322 is connected to the outside of the mounting sleeve 433.

[0035] In this embodiment of the application, as shown in Figures 1-3, the positioning mechanism 4 also includes an anti-slip pad; the two positioning plates 42 are both set with an arc structure on the side that is close to each other; the anti-slip pad is set at the arc structure and abuts against the turbine bearing.

[0036] This utility model embodiment provides a tooling for overhauling steam turbine bearings, and its working process is as follows:

[0037] Workers used a crane to hoist the turbine bearing onto the mounting plate 2. Then, they activated the second drive unit 431 to rotate the first gear 4321. Since the first gear 4321 and the second gear 4322 meshed with each other, the second gear 4322 could rotate the mounting sleeve 433 under the limit of the limit rail and the limit block. Since the mounting sleeve 433 was threadedly connected to the second screw 434, the second screw 434 could move the positioning plate 42. The two positioning plates 42 could position the turbine bearing, making the turbine bearing more stable during maintenance.

[0038] The first drive unit 32 is activated to drive the first bevel gear 331 to rotate. Since the first bevel gear 331 and the second bevel gear 332 mesh with each other, the second bevel gear 332 drives the screw to rotate, which in turn drives the two screw sleeves 36 to move. The movement of the screw sleeves 36 can drive the hinge rod 35 to move. Therefore, with the cooperation of the telescopic rod 37, the hinge rod 35 drives the mounting plate 2 to move up and down, thereby achieving the purpose of lifting the turbine bearing, making the turbine bearing more convenient and efficient to maintain.

[0039] The various embodiments in this specification are described in a progressive manner. For the same or similar parts between the various embodiments, please refer to each other. Each embodiment focuses on describing the differences from other embodiments.

[0040] The above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit this application. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of this application.

Claims

1. A tooling for overhauling steam turbine bearings, characterized in that, It includes a base plate (1), a mounting plate (2), a lifting mechanism (3), and two sets of positioning mechanisms (4); one side of the base plate (1) is set on the ground, and the other side of the base plate (1) is connected to one end of the lifting mechanism (3), and the other end of the lifting mechanism (3) is connected to the mounting plate (2), and the base plate (1) and the mounting plate (2) are arranged in parallel; each of the two sets of positioning mechanisms (4) includes a side plate (41), a positioning plate (42), and a moving component (43); the two side plates (41) and the positioning mechanism (42) are arranged in parallel. The plate (41), the two positioning plates (42), and the two moving components (43) are respectively arranged opposite to each other; the two side plates (41) are connected to the side of the mounting plate (2) away from the bottom plate (1) and are respectively located at both ends of the mounting plate (2); the two positioning plates (42) are respectively connected to the two side plates (41) through the moving components (43) and are slidably connected to the mounting plate (2); the two positioning plates (42) are both configured to abut against the turbine bearing.

2. The tooling for overhauling turbine bearings according to claim 1, characterized in that, The lifting mechanism (3) includes a fixed plate (31), a first driving member (32), a first transmission assembly (33), a first screw (34), two hinge rods (35), and two screw sleeves (36). The fixed plate (31) has a cavity, and the first screw (34) is disposed in the cavity and is rotatably connected to the fixed plate (31). The first driving member (32) is disposed on the fixed plate (31), and the output end of the first driving member (32) is connected to one end of the first transmission assembly (33), and the other end of the first transmission assembly (33) is connected to the first screw (34). The two screw sleeves (36) are spaced apart and sleeved on the first screw (34) and are rotatably connected to the first screw (34). One end of each of the two hinge rods (35) is hinged to the two screw sleeves (36), and the other end of each of the two hinge rods (35) is connected to the mounting plate (2).

3. The tooling for overhauling turbine bearings according to claim 1, characterized in that, The moving component (43) includes a second driving member (431), a second transmission component, a mounting sleeve (433), a second screw (434), a fixing block (436), and a mounting bracket (435); the mounting bracket (435) is connected to the side plate (41); the mounting bracket (435) has a cavity, and the second transmission component is disposed in the cavity; the side plate (41) has a through hole, one end of the second screw (434) passes through the through hole and is connected to the positioning plate (42), and the other end of the second screw (434) is sleeved with the second driving member (431), the second transmission component (434), the second driving member (434), the second transmission component (435), the second driving member (434), the second driving member (434), the second driving member (435), the second transmission component (436), the second driving member (434), the second driving member (435), the second driving member (434), the fixing block (436), and the mounting bracket (435); the mounting bracket (435) is connected to the side plate (41); the mounting bracket (435) has a cavity, and the second transmission component (435) is disposed in the cavity; the side plate (41) has a through hole, one end of the second screw (434) passes through the through hole and is connected to the positioning plate (42), and the other end of the second screw (434) is sleeved with the second driving member (431), the second transmission component (434), the second driving member (435), the second transmission component (436), the second driving member ... driving member (436), the second driving member (435), the second driving member (436), the second driving member (4 Fixed block (436); The mounting sleeve (433) is sleeved on the second screw (434) and rotatably connected to the second screw (434). The mounting sleeve (433) is disposed inside the mounting bracket (435), and the inner side of the mounting sleeve (433) is provided with a thread that mates with the second screw (434); The second driving member (431) is disposed on the mounting bracket (435). The output end of the second driving member (431) is connected to one end of the second transmission assembly, and the other end of the second transmission assembly is connected to the mounting shaft.

4. The tooling for overhauling turbine bearings according to claim 1, characterized in that, The lifting mechanism (3) also includes four telescopic rods (37); the four telescopic rods (37) are evenly arranged around the base plate (1), and the two ends of the four telescopic rods (37) are respectively connected to the base plate (1) and the mounting plate (2).

5. The tooling for overhauling turbine bearings according to claim 2, characterized in that, The first transmission assembly (33) includes a first bevel gear (331) and a second bevel gear (332); the first bevel gear (331) meshes with the second bevel gear (332), and both the first bevel gear (331) and the second bevel gear (332) are disposed in the cavity; the first bevel gear (331) is connected to the output end of the first drive member (32); the second bevel gear (332) is connected to the end of the first screw (34).

6. The tooling for overhauling turbine bearings according to claim 3, characterized in that, The second transmission assembly includes a first gear (4321) and a second gear (4322); the first gear (4321) and the second gear (4322) mesh, and both the first gear (4321) and the second gear (4322) are disposed within the mounting bracket (435); the first gear (4321) is connected to the output end of the second drive member (431), and the first gear (4321) is sleeved on a rotating shaft, which is rotatably connected to the mounting bracket (435); the second gear (4322) is connected to the outside of the mounting sleeve (433).

7. The tooling for overhauling turbine bearings according to claim 1, characterized in that, The positioning mechanism (4) also includes an anti-slip pad; the two positioning plates (42) are both set with an arc structure on the side that is close to each other; the anti-slip pad is set at the arc structure and abuts against the turbine bearing.

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