An electric device for shaftless rotor skewing of a generator

Abstract

The utility model provides a kind of electric device for generator shaftless rotor skew, including upper plate, movable plate, twist cover, twist cover assembly, support rod, shaftless rotor, twist main body, support column, lower plate, base, electronic positioner, support seat, twist main body assembly, transmission shaft, rotary transmission device, motor and push rod type hydraulic cylinder;The upper plate, movable plate, lower plate are sequentially arranged from top to bottom;The upper plate is connected between the lower plate by support column;The movable plate is connected with the upper plate by push rod type hydraulic cylinder;The present technical solution can realize shaftless rotor skew semi-automation, reduce labor intensity.

Description

Technical Field

[0001] This utility model relates to the field of shaftless rotor technology for generators, and in particular to an electric device for skewing shaftless rotors in generators. Background Technology

[0002] In traditional designs, harmonics are often weakened by varying the distribution and spacing of different windings. However, tooth harmonics are difficult to eliminate by changing the windings. In such cases, skewing the stator slots by one tooth pitch became a common method for improving voltage waveforms in the early days. The magnetic poles remained in a straight slot state, resulting in minimal change in magnetic permeability as the poles swept across the slot openings, thus improving the voltage waveform to some extent. However, for small generators without a single integrated casing, the use of stator slot skew is severely limited because the tension bolts for the front and rear end covers must pass through straight holes in the stator core. Utility Model Content

[0003] In view of this, the purpose of this utility model is to provide an electric device for skewing the shaftless rotor of a generator, so as to realize semi-automatic skewing of the shaftless rotor and reduce labor intensity.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: an electric device for skewing a shaftless rotor of a generator, comprising an upper plate (1), a movable plate (2), a torsion cover (3), a torsion cover assembly (4), a support rod (5), a shaftless rotor (6), a torsion body (7), a support column (8), a lower plate (9), a base (10), an electronic limiter (11), a support seat (12), a torsion body assembly (13), a transmission shaft (14), a rotary transmission device (15), a motor (16), and a push rod type hydraulic cylinder (17); The upper plate (1), the movable plate (2), and the lower plate (9) are arranged sequentially from top to bottom; the upper plate (1) and the lower plate (9) are connected by a support column (8); the movable plate (2) is connected to the upper plate (1) by a push rod type hydraulic cylinder (17); The torsion cover (3), torsion cover assembly (4), motor (16), electronic limiter (11) and rotary transmission device (15) are fixed to the movable plate (2), and the base (10) is fixed to the lower plate (9) and placed directly on the ground; the shaftless rotor (6) is placed on the base (10); The drive shaft (14) is fixed on the movable plate (2) via the support base (12), the torsion body assembly (13) is fixed on the torsion body (7), and then the torsion body (7) and the torsion cover (3) are fixed on the movable plate (2).

[0005] In a preferred embodiment: before twisting, the shaftless rotor (6) is placed on the base (10), and the movable plate (2) is pushed to the upper end face of the shaftless rotor (6) by a push rod hydraulic cylinder (17).

[0006] In a preferred embodiment: during the twisting process, the motor (16) rotates to drive the rotary transmission device (15), pushing the twisting body to rotate until it reaches the required angle and hits the limit. Then, the movable plate (2) presses down and stops for 3 to 5 seconds before retracting.

[0007] In a preferred embodiment: both the upper plate (1) and the lower plate (9) are provided with connecting holes (18), and the two ends of the support column (8) are respectively inserted into the connecting holes (18).

[0008] Compared with the prior art, the present invention has the following beneficial effects: 1. This device has the advantages of skewing the shaftless rotor, convenient operation, high safety, and low labor intensity.

[0009] 2. Achieve semi-automatic shaftless rotor skewing, reducing labor intensity.

[0010] 3. Improve production efficiency and overcome the disadvantage of poor winding after rotor skewing. Attached Figure Description

[0011] Figure 1 This is a front view of a preferred embodiment of the present invention; Figure 2 This is a top view of a preferred embodiment of the present invention; Reference numerals: 1 Upper plate, 2 Movable plate, 3 Torsion cover, 4 Torsion cover assembly, 5 Support rod, 6 Shaftless rotor, 7 Torsion body, 8 Support column, 9 Lower plate, 10 Base, 11 Electronic limiter, 12 Support seat, 13 Torsion body assembly, 14 Drive shaft, 15 Rotary transmission device, 16 Motor, 17 Push rod type hydraulic cylinder, 18 Connection hole. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of this application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0014] It should be noted that the terminology used herein is for the purpose of describing particular implementations only and is not intended to limit the exemplary implementations according to this application; as used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise; furthermore, it should be understood that when the terms “comprising” and / or “including” are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0015] An electric device for shaftless rotor skew in generators, reference Figure 1-2 It includes an upper plate 1, a movable plate 2, a torsion cover 3, a torsion cover assembly 4, a support rod 5, a shaftless rotor 6, a torsion body 7, a support column 8, a lower plate 9, a base 10, an electronic limiter 11, a support seat 12, a torsion body assembly 13, a transmission shaft 14, a rotary transmission device 15, a motor 16, and a push rod type hydraulic cylinder 17. The upper plate 1, the movable plate 2, and the lower plate 9 are arranged sequentially from top to bottom; the upper plate 1 and the lower plate 9 are connected by a support column 8; the movable plate 2 is connected to the upper plate 1 by a push rod type hydraulic cylinder 17; The torsion cover 3, torsion cover assembly 4, motor 16, electronic limiter 11 and rotary transmission device 15 are fixed to the movable plate 2, and the base 10 is fixed to the lower plate 9 and placed directly on the ground; the shaftless rotor 6 is placed on the base 10. The drive shaft 14 is fixed to the movable plate 2 via the support base 12, the torsion body assembly 13 is fixed to the torsion body 7, and then the torsion body 7 and the torsion cover 3 are fixed to the movable plate 2.

[0016] Before the torsion, the shaftless rotor 6 is placed on the base 10, and the movable plate 2 is pushed to the upper end face of the shaftless rotor 6 by the push rod type hydraulic cylinder 17.

[0017] During the twisting process, the motor 16 rotates, driving the rotary transmission device 15 to push the twisting body to rotate until it reaches the required angle and hits the limit. Then, the movable plate 2 presses down and stays for 3 to 5 seconds before retracting.

[0018] Both the upper plate 1 and the lower plate 9 are provided with connecting holes 18, and the two ends of the support column 8 are respectively inserted into the connecting holes 18.

[0019] Specifically, before twisting, the shaftless rotor 6 is placed on the base 10 of the twisting mechanism. The movable plate 2 is pushed to the upper end face of the shaftless rotor 6 by the push rod hydraulic cylinder 17. During twisting, the motor 16 rotates to drive the rotary transmission device 15, pushing the twisting body to rotate until it reaches the required angle and hits the electronic limiter 11. Then the movable plate 2 presses down and stays for 3 to 5 seconds before retracting.

[0020] The torsion cover assembly 4, electronic limiter 11, and push rod type hydraulic cylinder 17 are fixed to the movable plate 2. The transmission shaft 14 is fixed to the movable plate 2 by the support base 12. The rotary transmission device 15 and motor 16 are fixed to the movable plate 2. The torsion main body assembly 13 is fixed to the torsion main body 7. Then, the torsion main body 7 and the torsion cover 3 are fixed to the movable plate 2. The movable plate 2 is then fixed to the upper plate 1 by the push rod type hydraulic cylinder 17. The base 10 is fixed to the lower plate 9. The upper plate 1 is connected and fixed to the lower plate 9 by the support column 8.

[0021] First, place the shaftless rotor 6 on the base 10. The push rod type hydraulic cylinder pushes the movable plate 2 to the upper end face of the shaftless rotor 6. When the torsion body 7 is 1mm away from the upper end face of the rotor 6, the push rod type hydraulic cylinder stops. The motor 16 drives the rotary transmission device 15 to rotate and form a linkage with the transmission shaft 14, pushing the torsion body 7 to rotate and drive the torsion body assembly 13 to contact the support rod 5 to torsion the shaftless rotor 6. When the torsion body 7 rotates until it reaches the required angle, the transmission shaft 14 will hit the electronic limiter 11 and then be limited. The movable plate 2 will press down and contact the upper end face of the shaftless rotor 6 and pause for 3 to 5 seconds before retracting.

Claims

1. An electric device for shaftless rotor skew in generators, characterized in that: Includes an upper plate (1), a movable plate (2), a torsion cover (3), a torsion cover assembly (4), a support rod (5), a shaftless rotor (6), a torsion body (7), a support column (8), a lower plate (9), a base (10), an electronic limiter (11), a support seat (12), a torsion body assembly (13), a drive shaft (14), a rotary transmission device (15), a motor (16), and a push rod type hydraulic cylinder (17); The upper plate (1), the movable plate (2), and the lower plate (9) are arranged sequentially from top to bottom; the upper plate (1) and the lower plate (9) are connected by a support column (8); the movable plate (2) is connected to the upper plate (1) by a push rod type hydraulic cylinder (17); The torsion cover (3), torsion cover assembly (4), motor (16), electronic limiter (11) and rotary transmission device (15) are fixed to the movable plate (2), and the base (10) is fixed to the lower plate (9) and placed directly on the ground; the shaftless rotor (6) is placed on the base (10); The drive shaft (14) is fixed on the movable plate (2) via the support base (12), the torsion body assembly (13) is fixed on the torsion body (7), and then the torsion body (7) and the torsion cover (3) are fixed on the movable plate (2).

2. The electric device for shaftless rotor skew of a generator according to claim 1, characterized in that: Before the torsion, the shaftless rotor (6) is placed on the base (10), and the movable plate (2) is pushed to the upper end face of the shaftless rotor (6) by the push rod type hydraulic cylinder (17).

3. The electric device for shaftless rotor skew of a generator according to claim 1, characterized in that: When twisting, the motor (16) rotates and drives the rotary transmission device (15) to push the twisting body to rotate until it reaches the required angle and hits the limit. Then the movable plate (2) presses down and stops for 3 to 5 seconds before retracting.

4. An electric device for shaftless rotor skew in a generator according to claim 1, characterized in that: Both the upper plate (1) and the lower plate (9) are provided with connecting holes (18), and the two ends of the support column (8) are respectively inserted into the connecting holes (18).

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