Stator base circle measuring device

Abstract

The utility model relates to the technical field of water turbine assembly, in particular to a stator base circle measuring device which comprises a supporting platform, a base arranged on the supporting platform, a central column fixed in the center of the base and a reinforcing assembly used for fixing the base on the supporting platform. The rotating assembly is used for pushing the measuring assembly to rotate so as to measure the circle of the stator base; according to the utility model, through the arrangement of the rotating assembly and the measuring assembly, the circle measurement of the stator base can be rapidly realized, the working efficiency is high, the structure is relatively simple, and the manufacturing cost is reduced; the supporting assembly is arranged to support the rotating assembly, the rotating assembly can be installed at any needed position, the equipment stability is good, and the measurement precision is improved.

Description

Technical Field

[0001] This utility model relates to the field of water turbine assembly technology, and in particular to a stator base circle measuring device. Background Technology

[0002] The stator is an important component of a hydro turbine unit and a major part of its magnetic circuit. The roundness of the stator's inner circle and its coaxiality with the base ring plate are essential conditions for ensuring the normal operation of the hydro turbine unit. Currently, in the stator assembly process of hydropower station turbines, a roundness measuring frame is usually used as the main tool for stator assembly. It is used to check the roundness of the stator base ring plate, check whether the pigeon tail ribs are distributed around the circumference of the stator, and check the roundness of the inner diameter of the stator laminations.

[0003] Existing stator base roundness measuring devices, such as the one disclosed in patent number CN 113566058 A, include a stator roundness measuring device and its usage method. The device includes a support platform installed in the stator base pit, a base installed on the support platform, and a support fixed to the upper end of the base. A central column is vertically mounted on the support, coaxial with the stator base. A central body is sleeved on the outside of the central column, capable of vertically raising and lowering along the axis of the central column and horizontally rotating around the axis of the central column. Measuring arms and balance arms are respectively arranged on the radial sides of the central body, symmetrically arranged and located on the same plane. A measuring instrument is installed at the outer end of the measuring arm, used to acquire readings of the measured point. A drive motor is fixedly mounted on the base, with its output end connected to one end of a transmission mechanism, and the other end of the transmission mechanism connected to the central body. This invention is easy to install and operate, utilizes a motor to drive the lifting arm, has good stability, high measurement accuracy, and meets the stator assembly quality requirements.

[0004] The transmission mechanism of the above-mentioned device is relatively complex, and its movement and rotation process is not very smooth, which affects the efficiency of measuring circles. In addition, the entire circle measuring frame has many components and parts, the mechanism is relatively complex, the manufacturing cycle is long, and the manufacturing cost is high. Summary of the Invention

[0005] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a stator base circle measuring device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a stator base circle measuring device, including a support platform, a base mounted on the support platform, a central column fixed at the center of the base, and further including...

[0008] A reinforcement component for securing the base to the support platform;

[0009] A rotating assembly is used to drive a measuring assembly to rotate in order to measure the circle of a stator base. The rotating assembly includes a cylinder sleeved outside the central column, inner ring plates disposed at the upper and lower ends of the cylinder, a guide ring connected to the inner ring plates by a bolt, a balancing part disposed on one side of the cylinder, and a connecting part for mounting the measuring assembly.

[0010] A support component, located below the rotating component, is used to support the rotation of the rotating component.

[0011] Furthermore, the reinforcement component includes multiple positioning blocks arranged in a ring array on the support platform, an extension block corresponding to the positioning plate located on the outer edge of the base, and two bolts screwed to the positioning blocks and the extension blocks.

[0012] Furthermore, the reinforcement assembly also includes a plurality of raised blocks arranged in a ring array on the support platform, a pressing plate connected to the raised blocks and having one end abutting against the base, and bolts passing through the pressing plate and screwed to the support platform.

[0013] Furthermore, the balancing part includes a frame connected to the outer wall of the cylinder, a reinforcing rod intersecting the frame, a counterweight block disposed on the side of the frame away from the cylinder, and a lifting lug disposed on the top of the frame.

[0014] Furthermore, the connecting part includes a second frame connected to the outer wall of the cylinder, a second reinforcing rod intersecting on the second frame, and a second lifting lug on the top of the second frame.

[0015] Furthermore, the measuring assembly includes a cylinder disposed on the side of the second frame away from the cylinder body, a mounting bracket connecting the cylinder and the second frame, a longitudinal plate connected to the cylinder, measuring arms spaced apart on the longitudinal plate, and a dial indicator mounted on the measuring arms.

[0016] Furthermore, the support assembly includes a ring seat sleeved on the central column, a rolling support portion provided on the ring seat for supporting the rotating assembly, and four bolts for fixing the rolling support portion on the ring seat.

[0017] Furthermore, the rolling support includes a bottom ring plate, a top ring plate disposed on the bottom ring plate, an annular groove formed on the top ring plate, and balls disposed in the annular groove.

[0018] The stator base circle measuring device proposed in this utility model has the following advantages:

[0019] This invention enables rapid measurement of the circle of a stator base by setting up a rotating component and a measuring component, resulting in high work efficiency and a relatively simple structure, thus reducing manufacturing costs. By setting up a support component to support the rotating component, the rotating component can be installed at any desired position, ensuring good equipment stability and improving measurement accuracy. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a schematic diagram of the reinforcement components;

[0023] Figure 4 Side view of the reinforced component;

[0024] Figure 5 The other side view of the reinforced component; Detailed Implementation

[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example, refer to Figure 1-5 A stator base circularity measuring device includes a support platform 1, a base 2 disposed on the support platform 1, and a central column 3 fixed at the center of the base 2.

[0027] Reinforcing component 4, which is used to fix the base 2 to the support platform 1;

[0028] The rotating assembly 5 is used to drive the measuring assembly 6 to rotate in order to measure the circle of the stator base. The rotating assembly 5 includes a cylindrical body 501 sleeved on the outside of the central column 3, an inner ring plate 502 disposed at the upper and lower ends of the cylindrical body 501, a guide ring 504 connected to the inner ring plate 502 by a bolt 503, a balancing part 505 disposed on one side of the cylindrical body 501, and a connecting part 506 for mounting the measuring assembly 6. Preferably, in this embodiment, the guide ring 504 is rotatably connected to the central column 3.

[0029] Support component 7, located below rotating component 5, is used to support the rotation of rotating component 5.

[0030] This invention, by setting up a rotating component 5 and a measuring component 6, can quickly measure the circle of the stator base, which is highly efficient and has a relatively simple structure, reducing manufacturing costs. By setting up a supporting component 7 to support the rotating component 5, the rotating component 5 can be installed in any required position, which improves the stability of the equipment and enhances the measurement accuracy.

[0031] In an optional embodiment of this utility model, the reinforcement component 4 includes a plurality of positioning blocks 401 arranged in a ring array on the support platform 1, an extension block 402 corresponding to the positioning plate 401 and disposed on the outer edge of the base 2, and a second bolt 403 for screwing the positioning blocks 401 and the extension blocks 402. The positioning blocks 401 and the extension blocks 402 are screwed together by the second bolt 403 to achieve radial positioning of the base 2.

[0032] In an optional embodiment of this utility model, the reinforcement component 4 further includes a plurality of raised blocks 404 arranged in a ring array on the support platform 1, a pressing plate 405 connected to the raised blocks 404 and with one end abutting against the base 2, and a bolt 406 passing through the pressing plate 405 and screwed to the support platform 1. The pressing plate 405 is pressed against the upper surface of the base 2 by the bolt 406 screwed to the support platform 1, thereby achieving axial positioning of the base 2.

[0033] In an optional embodiment of this utility model, the balancing part 505 includes a frame 5051 connected to the outer wall of the cylinder 501, a reinforcing rod 5052 crosswise arranged on the frame 5051, a counterweight 5053 arranged on the side of the frame 5051 away from the cylinder 501, and a lifting lug 5054 arranged on the top of the frame 5051. The stability of the frame 5051 can be improved by setting the reinforcing rod 5052. In the actual measurement process, the number of counterweights 5053 can be adjusted according to actual needs to balance the weight of the connecting part 506 and the measuring component 6, thereby improving the measurement accuracy.

[0034] In an optional embodiment of this utility model, the connecting part 506 includes a second frame 5061 connected to the outer wall of the cylinder 501, a second reinforcing rod 5062 crosswise arranged on the second frame 5061, and a second lifting lug 5063 arranged on the top of the second frame 5061. In actual assembly, the first lifting lug 5054 and the second lifting lug 5063 are used to quickly lift the rotating component 5 onto the central column 3 to improve the efficiency of measuring the circle of the stator base.

[0035] In an optional embodiment of this utility model, the measuring component 6 includes a cylinder 601 disposed on the side of the frame 2 5061 away from the cylinder 501, a mounting bracket 602 connecting the cylinder 601 and the frame 2 5061, a longitudinal plate 603 connected to the cylinder 601, measuring arms 604 spaced apart on the longitudinal plate 603, and dial indicators 605 mounted on the measuring arms 604. Preferably, in this embodiment, there are four dial indicators 605. By driving the longitudinal plate 603 to move by the cylinder 601, the measuring arms 604 and dial indicators 605 can be moved to the corresponding positions for rapid circle measurement.

[0036] In an optional embodiment of this utility model, the support component 7 includes a ring seat 701 sleeved on the central column 3, a rolling support part 702 provided on the ring seat 701 for supporting the rotating component 5, and a bolt 703 for fixing the rolling support part 702 on the ring seat 701. Preferably, in this embodiment, the ring seat 701 can be fixed to the central column 3 by bolts. After the ring seat 701 is sleeved from the top of the central column 3, it can be fixed to the central column 3 according to actual needs.

[0037] In an optional embodiment of the present invention, the rolling support 702 includes a bottom ring plate 7021, a top ring plate 7022 disposed on the bottom ring plate 7021, an annular groove 7023 formed on the top ring plate 7022, and a ball bearing 7024 disposed in the annular groove 7023. Preferably, in this embodiment, the portion of the ball bearing 7024 extending beyond the annular groove 7023 is used to support the rotating assembly 5, and an appropriate amount of lubricating grease can be placed in the annular groove 7023.

[0038] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

[0039] In the description of this specification, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing the technical solution of this patent and simplifying the description, and 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 on this patent application.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this patent application, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this specification, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; 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 communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this specification according to the specific circumstances.

[0042] In this specification, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A stator base circularity measuring device, comprising a support platform (1), a base (2) disposed on the support platform (1), and a central column (3) fixed at the center of the base (2), characterized in that: It also includes a reinforcement component (4) for securing the base (2) to the support platform (1); A rotating assembly (5) is used to drive the measuring assembly (6) to rotate in order to measure the circle of the stator base. The rotating assembly (5) includes a cylindrical body (501) sleeved on the outside of the central column (3), an inner ring plate (502) disposed at the upper and lower ends of the cylindrical body (501), a guide ring (504) connected to the inner ring plate (502) by a bolt (503), a balancing part (505) disposed on one side of the cylindrical body (501), and a connecting part (506) for mounting the measuring assembly (6). A support component (7) is located below the rotating component (5) and is used to support the rotation of the rotating component (5).

2. The stator base circle measuring device according to claim 1, characterized in that: The reinforcement component (4) includes a plurality of positioning blocks (401) arranged in a ring array on the support platform (1), an extension block (402) corresponding to the positioning block (401) located on the outer edge of the base (2), and bolts (403) screwed to the positioning block (401) and the extension block (402).

3. The stator base circle measuring device according to claim 1, characterized in that: The reinforcement component (4) also includes a plurality of raised blocks (404) arranged in a ring array on the support platform (1), a pressing plate (405) connected to the raised blocks (404) and with one end abutting against the base (2), and a bolt (406) passing through the pressing plate (405) and screwed to the support platform (1).

4. The stator base circle measuring device according to claim 1, characterized in that: The balancing part (505) includes a frame (5051) connected to the outer wall of the cylinder (501), a reinforcing rod (5052) intersecting the frame (5051), a counterweight (5053) on the side of the frame (5051) away from the cylinder (501), and a lifting lug (5054) on the top of the frame (5051).

5. The stator base circle measuring device according to claim 1, characterized in that: The connecting part (506) includes a second frame (5061) connected to the outer wall of the cylinder (501), a second reinforcing rod (5062) intersecting on the second frame (5061), and a second lifting lug (5063) on the top of the second frame (5061).

6. The stator base circle measuring device according to claim 5, characterized in that: The measuring assembly (6) includes a cylinder (601) disposed on the side of the frame two (5061) away from the cylinder (501), a mounting bracket (602) connecting the cylinder (601) and the frame two (5061), a longitudinal plate (603) connected to the cylinder (601), a measuring arm (604) spaced on the longitudinal plate (603), and a dial indicator (605) mounted on the measuring arm (604).

7. The stator base circle measuring device according to claim 1, characterized in that: The support assembly (7) includes a ring seat (701) sleeved on the central column (3), a rolling support part (702) provided on the ring seat (701) for supporting the rotating assembly (5), and four bolts (703) for fixing the rolling support part (702) on the ring seat (701).

8. The stator base circle measuring device according to claim 7, characterized in that: The rolling support (702) includes a bottom ring plate (7021), a top ring plate (7022) provided on the bottom ring plate (7021), an annular groove (7023) opened on the top ring plate (7022), and a ball (7024) provided in the annular groove (7023).

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