A protective cover for a generator rotor

Abstract

The utility model discloses a kind of generator rotor processing protective cover, the protective cover is composed of three groups of radian 120° and the arc shell of same size, can be spliced into circular cover body, is fixed with lathe three-jaw hydraulic chuck clamping jaw by mounting portion, linkage is realized.Arc shell is equipped with the positioning through-hole of claw pole adaptation with rotor, when chuck loosens, shell opens to facilitate rotor dismounting;When chuck clamping, shell folds and inserts claw pole clearance, fills gap and outer diameter is less than the outer circle diameter of rotor after processing, the protective cover can prevent iron filings from falling into claw pole clearance of rotor during turning, structure is stable, wear-resistant and durable, easy to install and maintain, significantly improve protection performance and use reliability.

Description

Technical Field

[0001] This utility model relates to the technical field of generator rotor processing equipment, and in particular to a protective cover for generator rotor processing. Background Technology

[0002] During the turning process of generator rotors, the claw pole clearance is easily invaded by metal chips that fly out during the cutting process. Once these chips fall into the rotor claw pole clearance, they may cause the motor rotor to jam during subsequent motor assembly and operation, seriously affecting the motor's performance and service life, and even causing safety accidents. Currently, existing protective measures are insufficient to effectively prevent metal chips from entering the rotor claw pole clearance; therefore, a reliable protective device is urgently needed to solve the above problem. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model proposes a protective cover for generator rotor processing.

[0004] This utility model proposes a protective cover for generator rotor processing, comprising three sets of arc-shaped shells, each with an arc of 120° and the same geometric dimensions. The three sets of arc-shaped shells can be spliced ​​to form a complete circular cover structure. Each set of arc-shaped shells has an adapter mounting part on one end face. The arc-shaped shells can be fixed to the jaws of a three-jaw hydraulic chuck on a lathe through the mounting part to achieve linkage movement with the jaws of the chuck.

[0005] Each of the three sets of arc-shaped housings has multiple sets of positioning through holes adapted to the rotor claw poles;

[0006] When the hydraulic chuck is released, the three sets of arc-shaped housings are in an open state with gaps between them, which facilitates the removal and installation of the rotor;

[0007] When the hydraulic chuck retracts and clamps, the three sets of arc-shaped shells become closed and splice together to form a complete circle; the three sets of arc-shaped shells in the closed state can be embedded in the rotor claw pole gap, fill the rotor claw pole gap, and their outer diameter is smaller than the diameter of the outer circle after the rotor is machined.

[0008] Preferably, the arc-shaped shell is made of high-strength, wear-resistant, and tough alloy steel.

[0009] Preferably, the mounting part is provided with multiple mounting holes, and the arc-shaped housing is fastened to the chuck jaws by bolts passing through the mounting holes and the corresponding holes on the chuck jaws in sequence.

[0010] Preferably, the outer wall of the arc-shaped shell is provided with reinforcing ribs, which are distributed along the arc direction of the arc-shaped shell to enhance the structural strength of the arc-shaped shell and prevent deformation due to stress during processing.

[0011] Preferably, a wear-resistant bushing is provided on the inner wall of the through hole.

[0012] Preferably, a sealing strip is provided on the inner wall of the through hole, and the sealing strip is used to seal the rotor claw pole gap.

[0013] This invention proposes a protective cover for generator rotor machining. By incorporating three sets of arc-shaped housings linked to a lathe's three-jaw hydraulic chuck, these housings can open during rotor loading and unloading and close during machining. The closing fixture then embeds itself into the rotor's jaw gap, filling it completely. Furthermore, the outer diameter of the closing fixture is smaller than the diameter of the rotor's outer diameter after machining. During the rotor's outer diameter machining process, the rotor gap is effectively filled, preventing metal chips from falling into the jaw gap. This effectively controls the occurrence of metal chips falling into the rotor's jaw gap, avoiding subsequent rotor jamming caused by falling metal chips.

[0014] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the structure of this utility model and before rotor positioning;

[0017] Figure 3 This is a schematic diagram of the structure of the present invention after rotor positioning;

[0018] Figure 4 This is a front view of the cover of this utility model in the closed state;

[0019] Figure 5 This is a side view of the cover of this utility model in the closed state;

[0020] Figure 6 This is a front view of the cover of this utility model in the open state;

[0021] Figure 7 This is a side view of the cover of this utility model in the open state;

[0022] The following are the labels in the diagram: 1. Arc-shaped shell; 101. Mounting part; 102. Through hole; 2. Rotor; 201. Rotor claw pole; 202. Claw pole gap. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] like Figures 1-7 The generator rotor machining protective cover shown includes three sets of arc-shaped shells 1, each with a curvature of 120° and identical geometric dimensions. The three sets of arc-shaped shells 1 can be spliced ​​to form a complete circular cover structure. Each set of arc-shaped shells 1 has an adapter mounting part 101 on one end face. Through the mounting part 101, the arc-shaped shell 1 can be fixed to the jaws of a three-jaw hydraulic chuck on a lathe, thereby realizing the linkage movement with the chuck jaws.

[0025] Each of the three sets of arc-shaped housings 1 has multiple sets of positioning through holes 102 adapted to the claw poles 201 of the rotor 2. When the hydraulic chuck is released, the three sets of arc-shaped housings 1 are in an open state with gaps between them, facilitating the removal and insertion of the rotor 2; when the hydraulic chuck is retracted and clamped, the three sets of arc-shaped housings 1 are in a closed state, splicing together to form a complete circle; in the closed state, the three sets of arc-shaped housings 1 can be embedded in the claw pole gaps 202 of the rotor 2, filling the claw pole gaps 202 of the rotor 2, and their outer diameter is smaller than the diameter of the outer circle of the rotor 2 after machining.

[0026] Furthermore, the arc-shaped shell 1 is made of high-strength, wear-resistant, and tough alloy steel, which can withstand the impact and friction during processing, thereby improving the service life and protective performance of the protective cover.

[0027] The mounting part 101 is provided with multiple mounting holes. By passing bolts through the mounting holes and the corresponding holes on the chuck jaws in sequence, the arc-shaped housing 1 is fastened to the chuck jaws. This connection method has a simple structure, is easy to install and disassemble, and the connection is firm and reliable.

[0028] The outer wall of the arc-shaped shell 1 is provided with reinforcing ribs, which are distributed along the arc direction of the arc-shaped shell 1 to enhance the structural strength of the arc-shaped shell 1, prevent deformation due to external forces such as cutting forces during processing, and ensure the normal use of the protective cover.

[0029] The inner wall of the through hole 102 is provided with a wear-resistant bushing. The wear-resistant bushing can reduce the friction between the rotor claw pole 201 and the inner wall of the through hole 102, reduce the degree of wear, and extend the service life of the protective cover.

[0030] In addition, a sealing strip is provided on the inner wall of the through hole 102. The sealing strip is used to seal the rotor claw pole gap 202, further preventing iron filings from entering the gap 202 and improving the protection effect.

[0031] In this embodiment, during operation:

[0032] When machining the generator rotor 2 is required, first place the rotor 2 in a suitable position, then control the hydraulic chuck to release. At this time, the three sets of arc-shaped housings 1 are in an open state. Insert the rotor 2, so that the rotor claw poles 201 are inserted into the positioning through holes 102 on the arc-shaped housings 1. Next, start the hydraulic chuck to retract and clamp, and the three sets of arc-shaped housings 1 will close, splicing together to form a complete circle and embedding into the rotor claw pole gaps 202. At this time, the turning of the outer circle of the rotor 2 can begin.

[0033] During the machining process, because the arc-shaped housing 1 fills the rotor claw pole gap 202 and its outer diameter is smaller than the diameter of the outer circle of the rotor 2 after machining, the cutting chips are effectively blocked and cannot enter the rotor claw pole gap 202. At the same time, the wear-resistant bushing and sealing strip of the arc-shaped housing 1 further enhance the protective effect and reduce the risk of component wear and chip intrusion.

[0034] 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," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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. Therefore, they should not be construed as limitations on this utility model.

[0035] 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 utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0036] In this utility model, unless otherwise explicitly 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, an electrical connection, or a connection that allows communication between them; 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 explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0037] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" 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.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A protective cover for generator rotor processing, characterized in that, It includes three sets of arc-shaped shells (1) with an arc of 120° and the same geometric dimensions. The three sets of arc-shaped shells (1) can be spliced ​​to form a complete circular cover structure. Each set of arc-shaped shells (1) has a mounting part (101) on one end face. The arc-shaped shells (1) can be fixed to the jaws of the lathe three-jaw hydraulic chuck through the mounting part (101) to realize the linkage movement with the jaws of the chuck. Each of the three sets of arc-shaped housings (1) has multiple sets of through holes (102) adapted to the rotor claw poles (201). When the hydraulic chuck is released, the three sets of arc-shaped housings (1) are in an open state with gaps between them, which facilitates the removal and installation of the rotor (2); When the hydraulic chuck retracts and clamps, the three sets of arc-shaped shells (1) become closed and are spliced ​​together to form a complete circle; the three sets of arc-shaped shells (1) in the closed state can be embedded in the rotor claw pole gap (202) and fill the rotor claw pole gap (202), and their outer diameter is smaller than the diameter of the outer circle of the rotor (2) after machining.

2. The generator rotor machining protective cover according to claim 1, characterized in that, The arc-shaped shell (1) is made of high-strength, wear-resistant and tough alloy steel.

3. The generator rotor machining protective cover according to claim 1, characterized in that, The mounting part (101) is provided with multiple mounting holes. The arc-shaped housing (1) is fastened to the chuck jaws by passing bolts through the mounting holes and the corresponding holes on the chuck jaws in sequence.

4. The generator rotor machining protective cover according to claim 1, characterized in that, The outer wall of the arc-shaped shell (1) is provided with reinforcing ribs, which are distributed along the arc direction of the arc-shaped shell (1) to enhance the structural strength of the arc-shaped shell (1) and prevent deformation due to force during processing.

5. A protective cover for generator rotor machining according to claim 1, characterized in that, The inner wall of the through hole (102) is provided with a wear-resistant bushing.

6. A protective cover for generator rotor machining according to claim 1, characterized in that, A sealing strip is provided on the inner wall of the through hole (102), and the sealing strip is used to seal the rotor claw pole gap (202).

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