Dismounting tool for press-mounted stator

Abstract

The dismounting tool comprises a base, an upper cover, a rotating rod, a rotating piece and a plurality of sliding pieces, the rotating piece is composed of a plurality of rotating pieces, the rotating rod is enclosed by the rotating pieces, the outer sides of the rotating pieces are in an arc shape, the distances between the two ends of the outer sides of the rotating pieces and the rotating rod are different, and the rotating piece is of a rotational symmetry structure; the rotating rod is rotationally connected with the base and the upper cover, a sliding block is formed at the bottom end of each sliding piece, a plurality of sliding grooves are formed in the surface of the base, one end of each sliding groove penetrates to the periphery of the base, and each sliding block is clamped and embedded in the sliding groove; a containing groove is formed in the bottom end of each sliding groove, an elastic piece is arranged in each containing groove, the sliding pieces abut against the peripheries of the rotating pieces all the time under the action of the elastic pieces, and the rotating rod and the multiple rotating pieces rotate to drive the sliding pieces to slide outwards. The stator disassembling tool has the advantages that the stator disassembling tool is simple in structure, and the process of disassembling the stator from the casing is simple and convenient to operate.

Description

Technical Field

[0001] The utility model relates to the technical field of generator disassembly, in particular to a disassembly tool for a press-fit stator. Background Art

[0002] The generator consists of two parts: the stator and the rotor. The stator is installed in the casing and has an interference fit with the casing. When installing the stator, the stator is installed by heating the casing. The stator structure includes punching sheets, windings and connecting wires. The thickness of each punching sheet is 0.3mm. Adjacent punching sheets are connected by bonding. The windings are led out at both ends of the punching sheets to form winding coils, and the inner radius of the winding coils is only 0.36mm away from the inner radius of the punching sheets. During disassembly, due to the large interference between the stator and the casing, force needs to be applied to the punching sheets but the windings must not be damaged.

[0003] The existing stator disassembly tooling includes a screw, a guide plate, a nut, a claw, a plugging plate and a fixed plate. When disassembling the stator, the plugging plate is installed at the center hole of the casing, and the guide plate is screwed in from the lower end of the screw. One end of each claw is inserted into the annular groove at the lower end of the guide plate, and the other end is inserted into the corresponding raised portion at the lower end of the stator. Among them, the four claws are evenly installed under the 36 raised portions of the stator, and each tooth is installed with a raised portion between them, and care is taken not to damage the winding. The fixed plate is installed to fix the claws, and the fixed plate is pressed by the nut, and the casing to be disassembled and the stator are heated to a preset temperature as a whole. The casing is made of aluminum material. After being heated to the preset temperature, the expansion of its inner hole is greater than the expansion of the outer circle of the stator, thereby reducing the interference of the stator. Rotate the screw to drive the guide plate to carry the claws to move linearly upward along the screw, and the stator can be pulled out of the casing, thereby realizing the removal of the stator from the casing. The existing generator stator disassembly tooling has a complex structure and a cumbersome disassembly operation process, which needs to be improved. Utility Model Content

[0004] The utility model aims to provide a stator disassembly tool with a simple structure and a simple stator disassembly process in a casing.

[0005] The cam is an axially parallel structure of the plurality of sliding members, the cam being abutted against the outer edges of the plurality of sliding members and being able to move relative to each other to move with the cam being able to move relative to each other.

[0006] Preferably, the end of the rotating piece with a larger outer distance from the rotating rod is the first end of the rotating piece, the end of the rotating piece with a smaller outer distance from the rotating rod is the second end of the rotating piece, and the first end of the rotating piece is arranged to form a limiting portion.

[0007] Preferably, the distance between the first end of the rotating piece and the outer periphery of the rotating rod is set to "L", the distance between the second end of the rotating piece and the outer periphery of the rotating rod is set to "D", and the distance of the sliding member sliding outward is "T" and meets 2mm. <T=L-D<4mm。

[0008] Preferably, one end of the sliding member close to the rotating piece is a vertically arranged abutment portion, the bottom end of the abutment portion is embedded in the receiving groove, and the two ends of the elastic member in the receiving groove are respectively abutted against the inner side wall of the limiting plate and the base.

[0009] Preferably, the elastic member is configured as a spring.

[0010] Preferably, one end of the abutment portion close to the rotating piece is configured to be an inwardly concave arc shape.

[0011] Preferably, the rotating member is composed of four rotating plates, and four sliding grooves are formed on the surface of the base, and the four sliding grooves are distributed in a "cross" shape on the surface of the base.

[0012] Preferably, the sliding member is arranged in a fan shape.

[0013] Preferably, the base and the upper cover are fixed by bolts.

[0014] From the above description of the utility model, it can be seen that the utility model has the following beneficial effects:

[0015] 1. By rotating the rotating rod to drive the rotating part to rotate, each sliding part can be driven to slide outward to be engaged with the inside of the stator. The disassembly tooling structure of the stator is simple, and the process of disassembling the stator from the casing is very simple.

[0016] 2. A receiving groove is formed at the bottom end of the sliding groove, and a limiting plate portion is provided on one side of the sliding member close to the rotating piece. A spring is provided in the receiving groove, and one end of the spring abuts against the abutting portion so that the abutting portion always maintains an abutting state with the periphery of the rotating piece. When the rotating rod is not rotated, the sliding member can be completely hidden in the sliding groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a cross-sectional view of a disassembly tool for a press-fit stator in an embodiment;

[0018] Figure 2 is a side view of a rotating rod and a rotating member of an embodiment;

[0019] Figure 3 is a top view of the rotating rod and the rotating member of the embodiment;

[0020] Figure 4 is a cross-sectional view of the base, upper cover, rotating rod and rotating member of the embodiment;

[0021] Figure 5 is a top view of the base of the embodiment;

[0022] Figure 6 It is an embodiment Figure 5 Sectional view at AA;

[0023] Figure 7 is a top view of a sliding member of an embodiment;

[0024] Figure 8 is a cross-sectional view of a sliding member and a slider of an embodiment;

[0025] Fig. 9 is a schematic diagram of an embodiment in which a sliding member is located inside a base;

[0026] Fig.10 It is a schematic diagram of the outer periphery of the sliding member of the embodiment sliding out from the base.

[0027] Figure numerals: 1. base; 11. sliding groove; 12. accommodating groove; 13. elastic member; 2. upper cover; 3. rotating rod; 4. rotating member; 41. rotating sheet; 411. first end; 412. second end; 413. limiting portion; 5. sliding member; 51. abutting portion; 6. slider. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer and more understandable, the following is a summary of the technical problems, technical solutions and beneficial effects to be solved by the present invention. Figure 1-10 It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] Reference Figure 1 , Figure 2 and Figure 3 A disassembly tool for a press-fit stator includes a base 1, an upper cover 2, a rotating rod 3, a rotating member 4, and four sliding members 5, wherein the rotating member 4 is composed of four rotating sheets 41, which are surrounded by the outer periphery of the rotating rod 3, and the outer periphery of the rotating sheet 41 is set to an arc shape, and the distances between the two ends of the outer periphery of the rotating sheet 41 and the rotating rod 3 are different, and the rotating member 4 composed of the four rotating sheets 41 presents a rotationally symmetrical structure. The end of the outer periphery of the rotating sheet 41 with a larger distance from the rotating rod 3 is set as a first end 411, and the end of the outer periphery of the rotating sheet 41 with a smaller distance from the rotating rod 3 is set as a second end 412, so that the first end 411 of the rotating sheet 41 is close to the second end 412 of another rotating sheet 41, and a limited position portion 413 is set on the outer periphery of the first end 411 of each rotating member 4.

[0030] Reference Figure 4-Figure 8 The surface of the base 1 is provided with four sliding grooves 11, each of which penetrates to the periphery of the base 1, and the four sliding grooves 11 are arranged in a "cross" shape on the surface of the base 1. Correspondingly, a slider 6 is arranged at the bottom of each sliding member 5, and the sliding member 5 is arranged in a fan shape, and the slider 6 is located at the center of the bottom end of the sliding member 5. The slider 6 at the bottom end of each sliding member 5 is embedded in the sliding groove 11, so that each sliding member 5 maintains a sliding connection with the base 1.

[0031] The rotating rod 3 is rotatably arranged on the base 1, so that each sliding member 5 surrounds the rotating member 4. In order to keep the sliding members 5 and the rotating piece 41 in contact with each other, a receiving groove 12 is formed at the bottom end of the sliding groove 11, and a contact portion 51 is vertically formed at one end of the sliding member 5 close to the rotating piece 41, so that the bottom end of the contact portion 51 is embedded in the receiving groove 12. An elastic member 13 such as a spring is arranged in the receiving groove 12, so that the two ends of the spring are respectively in contact with the inner side wall of the base 1 and the contact portion 51, so that the sliding member 5 is always in contact with the periphery of the rotating piece 41 under the action of the spring force. Finally, the upper cover 2 is placed above the sliding member 5 and rotatably connected to the rotating rod 3, and the upper cover 2 and the base 1 are fixed by bolt locking, so that the peripheral surface of the upper cover 2 is flush with the peripheral surface of the base 1. Since the sum of the height dimensions of the receiving groove 12 and the sliding groove 11 is greater than the height dimension of the contact portion 51, a certain distance is maintained between the bottom surface of the upper cover 2 and the top surface of the sliding member 5, so as to facilitate the smooth sliding of the sliding member 5. Fixing the upper cover 2 and the base 1 by bolt locking not only provides firm fixation but also has the advantage of being easy to disassemble.

[0032] Refer to Figure 3 , Fig. 9 and Fig.10 , when the rotating rod 3 is rotated to drive the rotating member 4 to revolve until the limiting portion 413 of the first end 411 of each rotating piece 41 is in contact with the contact portion 51 at one end of the sliding member 5, each sliding member 5 slides outwards under the driving action of each rotating piece 41, and the contact portion 51 on the side of the sliding member 5 close to the rotating piece 41 gradually compresses the spring. The distance dimension between the first end 411 of the rotating piece 41 and the periphery of the rotating rod 3 is set as "L", the distance dimension between the second end 412 of the rotating piece 41 and the periphery of the rotating rod 3 is set as "D", and the relationship between the distance dimensions of the first end 411 and the second end 412 of the rotating piece 41 and the periphery of the rotating rod 3 satisfies 2mm < L - D < 4mm. The distance dimension of the outward sliding of the sliding member 5 is "T". Since the distance dimension T of the outward sliding of the sliding member 5 = L - D, the distance dimension of the revolution of the rotating piece 41 to drive the sliding member 5 to slide outwards satisfies 2mm < T < 4mm; so that the sliding member 5 slides to protrude a suitable dimension, so that there is a good clamping effect between the outside of the sliding member 5 and the stator. In addition, in order to facilitate the rotation of the rotating piece 41 to drive the sliding member 5 to slide, the surface of the contact portion 51 facing the rotating piece 41 is formed into a concave arc shape, so that the contact between the sliding member 5 and the rotating piece 41 has a better fitting effect.

[0033] The specific implementation principle of the embodiment of the present application is: the rotating member 4 is rotatably set on the base 1, the slider 6 at the bottom end of each sliding member 5 is embedded in the sliding groove 11, and the abutment portion 51 at one end of the sliding member 5 abuts against the periphery of the rotating piece 41 under the action of the spring; the upper cover 2 is placed above the base 1 and the outer periphery of the upper cover 2 is flush with the outer periphery of the base 1, and the rotating rod 3 is kept rotatably connected to the upper cover 2.

[0034] When the stator in the generator needs to be disassembled by the tool for disassembling the press-fit stator, the rotating rod 3 is passed through the through hole on the surface of the casing from the bottom to the top, so that the disassembly tool is inserted into the stator. The rotating shaft of the hydraulic cylinder drives the rotating rod 3 to rotate clockwise, thereby driving each rotating piece 41 to revolve, and the sliding member 5 slides outward under the action of each rotating piece 41, so that each sliding member 5 abuts against the top surface of the stator; finally, the hydraulic press applies downward pressure to the rotating rod 3, thereby driving the disassembly tool to disengage the positioning from the casing, so as to disassemble the stator from the casing. After the stator is disassembled from the casing, the rotating rod 3 and the rotating member 4 are rotated counterclockwise, and each sliding member 5 abuts against the outer side of the rotating piece 41 near the second end 412 under the action of the spring, so that each sliding member 5 is completely hidden in the sliding groove 11, so that the disassembly tool can be separated from the stator.

[0035] The utility model is described above by way of example in conjunction with the accompanying drawings. It is obvious that the specific implementation of the utility model is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all protected by the utility model.

Claims

1. A disassembly tool for a press-fit stator, characterized in that: It comprises a base, an upper cover, a rotating rod, a rotating member and a plurality of sliding members, wherein the rotating member is composed of a plurality of rotating sheets, the plurality of rotating sheets enclose the rotating rod, the outer side of the rotating sheet is in an arc shape, the distances between the two ends of the outer side of the rotating sheet and the rotating rod are different, and the rotating member is in a rotationally symmetrical structure; The rotating rod is rotatably connected to the base and the upper cover respectively, the rotating member and the sliding member are located between the base and the upper cover, the base is fixedly connected to the upper cover, a slider is provided at the bottom end of each sliding member, a plurality of sliding grooves are formed on the surface of the base, one end of the sliding groove passes through the periphery of the base, and each slider is embedded in the sliding groove; The bottom end of each sliding groove is formed with a receiving groove, and an elastic member is arranged in the receiving groove. Under the action of the elastic member, the sliding member is always in contact with the periphery of the rotating piece. The rotating rod and the rotating pieces rotate to drive the sliding member to slide outward.

2. The disassembly tool for a press-fit stator according to claim 1, characterized in that: The end of the rotating piece with a larger outer distance from the rotating rod is the first end of the rotating piece, and the end of the rotating piece with a smaller outer distance from the rotating rod is the second end of the rotating piece. The first end of the rotating piece is arranged to form a limiting portion.

3. The disassembly tool for a press-fit stator according to claim 2, characterized in that: The distance between the first end of the rotating piece and the outer periphery of the rotating rod is set to "L", the distance between the second end of the rotating piece and the outer periphery of the rotating rod is set to "D", and the distance of the sliding member sliding outward is "T" and meets 2mm <T=L-D<4mm。 4. The disassembly tool for a press-fit stator according to claim 1, characterized in that: One end of the sliding member close to the rotating piece is a vertically arranged abutment portion, the bottom end of the abutment portion is embedded in the receiving groove, and the two ends of the elastic member in the receiving groove are respectively abutted against the inner side wall of the limiting plate and the base.

5. The disassembly tool for a press-fit stator according to claim 4, characterized in that: The elastic member is configured as a spring.

6. The disassembly tool for a press-fit stator according to claim 4, characterized in that: One end of the abutting portion close to the rotating piece is configured to be an inwardly concave arc shape.

7. The disassembly tool for a press-fit stator according to claim 2, characterized in that: The rotating member is composed of four rotating plates, and four sliding grooves are formed on the surface of the base. The four sliding grooves are distributed in a "cross" shape on the surface of the base.

8. The disassembly tool for a press-fit stator according to claim 7, characterized in that: The sliding member is arranged in a fan shape.

9. The disassembly tool for a press-fit stator according to claim 1, characterized in that: The base and the upper cover are fixed by bolts.

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