Fastened Rotating Rectifier

Abstract

The utility model discloses a fastening type rotating rectifier, including an iron sheet sleeved on a motor drive shaft, the end surface of the iron sheet axially opening a plurality of equidistant annularly distributed mounting grooves, each of the mounting grooves is provided with a mounting plate, a rectifier body is fixed on the outside of each mounting plate, the outside of the mounting plate axially penetrates two mirror-symmetrical countersunk holes, and each countersunk hole is provided with a fastener connected to the iron sheet. The utility model connects the rectifier body to the mounting groove on the iron sheet through the mounting plate, and through the rotating block, support shaft, spring, sleeve, threaded groove, threaded block, rotating shaft, positioning groove and positioning block, so that the rectifier body and the motor can be easily disassembled and assembled, and there is no need to disassemble the stator and rotor on the motor before disassembling the rectifier body.

Description

Technical Field

[0001] The utility model relates to the technical field of rectifiers, in particular to a fastening type rotating rectifier. Background Art

[0002] At present, the rotating rectifier is an important component of the brushless excitation synchronous motor. The rotating rectifier rectifies the three-phase AC power emitted by the AC exciter coaxial with the synchronous motor into DC to provide excitation power for the synchronous motor. The rotating rectifier is installed on the shaft of the synchronous motor. When the synchronous motor is running, the rotating rectifier will rotate with the synchronous motor. Therefore, the rotating rectifier must be able to withstand a large centrifugal force and a certain mechanical vibration force, and at the same time withstand the thermal effect force generated by the rectification of the components. Once the rotating rectifier fails, the synchronous motor will not be able to operate normally, so the rotating rectifier is a key link in the brushless synchronous motor.

[0003] The traditional way of fixing the rotating rectifier is to fix it directly on the iron core with bolts and nuts. The advantage of this fixing method is that it is simple to process and manufacture, but the disadvantage is that it is poor in maintainability and requires the motor rotor and stator to be separated. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a fastening type rotating rectifier.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a fastened rotating rectifier, comprising an iron sheet sleeved on a motor drive shaft, the end face of the iron sheet axially opening a plurality of equidistant annular mounting grooves, each of the mounting grooves being provided with a mounting plate, a rectifier body being fixed on the outside of each mounting plate, two mirror-symmetrical countersunk holes axially passing through the outside of the mounting plate, each of the countersunk holes being provided with a fastener connected to the iron sheet.

[0006] As a further description of the above technical solution: a through hole passes through the central axis of the iron sheet, the iron sheet is sleeved on the driving shaft through the through hole, and a key slot for clamping a key cap is provided in the through hole, and the iron sheet is fixed to the outer edge of the driving shaft through the key slot and the key cap.

[0007] As a further description of the above technical solution: the fastener includes a rotary block movably connected in the countersunk hole, a cross groove is axially provided on the outside of the rotary block, a support shaft is concentrically fixed on the inner side of the rotary block, a sleeve is movably sleeved on the outside of the support shaft, the sleeve is axially slidably sleeved in the countersunk hole, and the end of the sleeve is axially fixed to the inner wall of the mounting groove, the inner wall of the mounting groove has two mirror-symmetrical thread grooves axially provided, each of the thread grooves corresponds concentrically to a sleeve, each of the thread grooves is threadedly connected to a threaded block, the threaded block is movably connected to the support shaft, and the end of the threaded block is fixedly connected to a rubber pad abutting the inner wall of the thread groove.

[0008] As a further description of the above technical solution: a blind hole is axially opened at the center of the end of the support shaft, a spring is axially fixed in the blind hole, the end of the spring is fixedly connected to the rotating shaft, the rotating shaft is axially slidably connected in the blind hole, and the end of the rotating shaft is rotationally connected to the threaded block.

[0009] As a further description of the above technical solution: the inner wall axis of the blind hole is provided with two mirror-symmetrical sliding grooves, each of which is slidably connected to a slider, and the slider is fixedly connected to the rotating shaft.

[0010] As a further description of the above technical solution: a number of equidistant and annularly distributed positioning blocks are axially fixed to the outer side of the threaded block, and a plurality of positioning grooves adapted to the positioning blocks are axially provided at the end of the support shaft.

[0011] The utility model has the following beneficial effects:

[0012] Compared with the prior art, the fastened rotating rectifier connects the rectifier body to the mounting groove on the iron sheet through a mounting plate, and through a rotating block, a support shaft, a spring, a sleeve, a threaded groove, a threaded block, a rotating shaft, a positioning groove and a positioning block, so that the rectifier body and the motor can be easily disassembled and assembled, without the need to disassemble the stator and rotor on the motor before disassembling the rectifier body. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a three-dimensional diagram of the overall structure of the fastening type rotary rectifier proposed by the utility model;

[0014] Figure 2 It is a side cross-sectional view of the connection between the mounting plate and the iron sheet of the fastening type rotating rectifier proposed by the utility model;

[0015] Figure 3 The utility model provides a fastening type rotary rectifier Figure 2 A magnified view of the structure at center.

[0016] Legend:

[0017] 1. Iron sheet; 2. Mounting groove; 3. Rectifier body; 4. Mounting plate; 5. Countersunk hole; 6. Rotary block; 7. Cross groove; 8. Bushing; 9. Support shaft; 10. Slide groove; 11. Spring; 12. Blind hole; 13. Slider; 14. Positioning groove; 15. Positioning block; 16. Threaded groove; 17. Threaded block; 18. Rubber pad; 19. Rotating shaft. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Reference Figures 1 to 3 The utility model provides a fastening type rotary rectifier: it includes an iron sheet 1 sleeved on the motor drive shaft, a through hole is axially passed through the center of the iron sheet 1, the iron sheet 1 is sleeved on the drive shaft through the through hole, and a keyway for clamping a key cap is provided in the through hole, the iron sheet 1 is fixed to the outer edge of the drive shaft through the keyway and the key cap, a plurality of equidistant annular mounting grooves 2 are axially provided on the end face of the iron sheet 1, a mounting plate 4 is provided in each mounting groove 2, a rectifier body 3 is fixed on the outside of each mounting plate 4, two mirror-symmetrical countersunk holes 5 are axially passed through the outside of the mounting plate 4, and a fastener connected to the iron sheet 1 is provided in each countersunk mouth; the fastener includes a rotary block 6 movably connected in the countersunk hole 5, a cross groove 7 is axially provided on the outside of the rotary block 6, a support shaft 9 is concentrically fixed on the inside of the rotary block 6, a sleeve 8 is movably sleeved on the outside of the support shaft 9, the sleeve 8 is axially slidably sleeved in the countersunk hole 5, and the end of the sleeve 8 is axially fixed to the mounting groove 2 The inner wall of the mounting groove 2 is axially provided with two mirror-symmetrical thread grooves 16, each thread groove 16 is concentrically corresponding to a sleeve 8, each thread groove 16 is threadedly connected with a thread block 17, the thread block 17 is movably connected to the support shaft 9, the end of the thread block 17 is fixedly connected with a rubber pad 18 abutting the inner wall of the thread groove 16, a blind hole 12 is axially provided at the end center of the support shaft 9, a spring 11 is axially fixed in the blind hole 12, the end of the spring 11 is fixedly connected to the rotating shaft 19, the rotating shaft 19 is axially slidably connected in the blind hole 12, the end of the rotating shaft 19 is rotatably connected with the thread block 17, the inner wall axis of the blind hole 12 is provided with two mirror-symmetrical sliding grooves 10, each sliding groove 10 is slidably connected with a slider 13, the slider 13 is fixedly connected to the rotating shaft 19, a plurality of equidistant annularly distributed positioning blocks 15 are axially fixed on the outer side of the thread block 17, and a plurality of positioning grooves 14 adapted to the positioning blocks 15 are axially provided at the end of the support shaft 9.

[0020] By connecting the rectifier body 3 to the mounting groove 2 on the iron sheet 1 through the mounting plate 4, and by means of the rotating block 6, the supporting shaft 9, the spring 11, the sleeve 8, the threaded groove 16, the threaded block 17, the rotating shaft 19, the positioning groove 14 and the positioning block 15, it is convenient to disassemble the rectifier body 3 and the motor, without having to disassemble the stator and the rotor on the motor before disassembling the rectifier body 3;

[0021] Working principle: When disassembling the rectifier body 3 and the iron sheet 1, first use a cross screwdriver to insert the cross slot 7 on the rotary block 6, then push the rotary block 6 into the countersunk hole 5, and at the same time drive the rotary block 6 to rotate, so that the rotating shaft 19 is retracted into the blind hole 12 in the support shaft 9, and at the same time the spring 11 is compressed, while the rotary block 6 drives the support shaft 9 to rotate on the threaded block 17, the positioning block 15 is aligned with the positioning groove 14, the positioning block 15 will move into the positioning groove 14, and then the support shaft 9 drives the threaded block 17 to rotate under the action of the positioning block 15 and the positioning groove 14, so that the threaded block 17 moves out of the threaded groove 16, and then the threaded block 17 is connected to the rotary block 6 and taken out together. Yes, then the rectifier body 3 can be removed from the iron sheet through the mounting plate 4. During installation, the organizer body is installed in the mounting groove 2 on the iron sheet through the mounting plate 4, so that the sleeve 8 passes through the countersunk hole 5 on the mounting plate 4, and then the threaded block 17 is put into the countersunk hole 5 and the sleeve 8, and then the rotary block 6 is pushed to move into the countersunk hole 5 while rotating the rotary block 6 so that the positioning block 15 is aligned and inserted into the positioning groove 14, and then the rotary block 6 will drive the threaded block 17 to rotate until the rubber pad 18 at the end of the threaded block 17 abuts against the inner wall of the threaded groove 16, at which time the rotary block 6 will be unable to rotate, and then the rotary block 6 is released, and the rotary block 6 is reset by descending under the action of the spring 11.

[0022] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A fixed type rotary rectifier, comprising an iron sheet (1) sleeved on a motor drive shaft, characterized in that: The end surface of the iron sheet (1) is axially provided with a plurality of equidistant annularly distributed mounting grooves (2), each of the mounting grooves (2) is provided with a mounting plate (4), a rectifier body (3) is fixed to the outside of each mounting plate (4), two mirror-symmetrical countersunk holes (5) are axially penetrated through the outside of the mounting plate (4), and each of the countersunk holes is provided with a fastener connected to the iron sheet (1).

2. The fastened rotary rectifier according to claim 1, characterized in that: A through hole is axially passed through the center of the iron sheet (1), the iron sheet (1) is sleeved on the drive shaft through the through hole, and a key slot for clamping a key cap is provided in the through hole, and the iron sheet (1) is fixed to the outer edge of the drive shaft through the key slot and the key cap.

3. The fastened rotary rectifier according to claim 1, characterized in that: The fastener comprises a rotary block (6) movably connected in the countersunk hole (5), a cross groove (7) is axially provided on the outside of the rotary block (6), a support shaft (9) is coaxially fixed on the inside of the rotary block (6), a sleeve (8) is movably sleeved on the outside of the support shaft (9), the sleeve (8) is axially slidably sleeved in the countersunk hole (5), and the end of the sleeve (8) is axially fixed to the inner wall of the installation groove (2), the inner wall of the installation groove (2) is axially provided with two mirror-symmetrical thread grooves (16), each of the thread grooves (16) corresponds concentrically to one of the sleeves (8), each of the thread grooves (16) is threadedly connected to a thread block (17), the thread block (17) is movably connected to the support shaft (9), and the end of the thread block (17) is fixedly connected to a rubber pad (18) abutting against the inner wall of the thread groove (16).

4. The fastened rotary rectifier according to claim 3, characterized in that: A blind hole (12) is axially provided at the center of the end of the support shaft (9), a spring (11) is axially fixed in the blind hole (12), the end of the spring (11) is fixedly connected to a rotating shaft (19), the rotating shaft (19) is axially slidably connected in the blind hole (12), and the end of the rotating shaft (19) is rotationally connected to the threaded block (17).

5. The fastened rotary rectifier according to claim 4, characterized in that: The inner wall axis of the blind hole (12) is provided with two mirror-symmetrical sliding grooves (10), each of which is slidably connected to a sliding block (13), and the sliding block (13) is fixedly connected to the rotating shaft (19).

6. The fastened rotary rectifier according to claim 3, characterized in that: A plurality of equidistantly annularly distributed positioning blocks (15) are axially fixed to the outer side of the threaded block (17), and a plurality of positioning grooves (14) adapted to the positioning blocks (15) are axially provided at the end of the support shaft (9).

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