阅读说明：本技术 一种发电机磁钢性能检测装置 (Generator magnetic steel performance detection device ) 是由 邓为 于 2019-11-01 设计创作，主要内容包括：本申请属于发电机测试技术领域,特别涉及一种发电机磁钢性能检测装置。所述装置包括转轴与衬套,转轴的前端连接有磁钢组件,转轴的后端与拖动台的输出轴键连接,转轴的中间部分通过轴承安装在外套内,外套的前端连接有定子安装盘,外套的后端连接拖动台,定子安装盘用于与永磁机定子组件的止口配合连接；衬套的内环通过键固定套接在所述转轴的前端,衬套的外环设置有键槽,用于安装被测的磁钢组件,磁钢组件安装到衬套上并被带动旋转时,永磁机定子组件的绕组能够切割磁钢组件产生的磁场,从而对磁钢性能进行检测。该检测装置操作方便、省时省力,提高了生产效率,降低了制造成本,减轻了操作人员的劳动强度。(The application belongs to the technical field of generator testing, and particularly relates to a generator magnetic steel performance detection device. The device comprises a rotating shaft and a bushing, wherein the front end of the rotating shaft is connected with a magnetic steel assembly, the rear end of the rotating shaft is connected with an output shaft key of a dragging table, the middle part of the rotating shaft is arranged in an outer sleeve through a bearing, the front end of the outer sleeve is connected with a stator mounting disc, the rear end of the outer sleeve is connected with the dragging table, and the stator mounting disc is used for being matched and connected with a spigot of a permanent magnet machine stator assembly; the inner ring of bush passes through the fixed cup joint of key the front end of pivot, the outer loop of bush is provided with the keyway for the installation magnet steel assembly who is surveyed, when magnet steel assembly installs on the bush and is driven the rotation, the magnetic field that magnet steel assembly produced can be cut to permanent magnet machine stator module's winding to detect the magnet steel performance. The detection device is convenient to operate, time-saving and labor-saving, improves the production efficiency, reduces the manufacturing cost and lightens the labor intensity of operators.)

1. The utility model provides a generator magnet steel performance detection device which characterized in that includes:

the rotating shaft (18) comprises a front end and a rear end along the axial direction, the front end of the rotating shaft (18) is connected with the magnetic steel assembly (2), the rear end of the rotating shaft (18) is connected with an output shaft key of the dragging table (10), the middle part of the rotating shaft (18) is installed in the outer sleeve (6) through a bearing, the front end of the outer sleeve (6) is connected with the stator installation disc (4), the rear end of the outer sleeve (6) is connected with the dragging table (10), and the stator installation disc (4) is used for being matched and connected with a spigot of the permanent magnet motor stator assembly (3);

bushing (21), its inner ring passes through key (19) and fixes cup jointing the front end of pivot (18), the outer loop of bushing (21) is provided with the keyway for install magnet steel assembly (2) that measurands, when magnet steel assembly (2) are installed on bushing (21) and are driven rotatoryly, the magnetic field that magnet steel assembly (2) produced can be cut to the winding of permanent magnet machine stator subassembly (3), through the output line output voltage detection magnet steel performance of permanent magnet machine stator subassembly (3).

2. The generator magnetic steel performance detection device according to claim 1, wherein the middle portion of the rotating shaft includes a limiting disc with an enlarged outer diameter, a step surface formed at a front end of the limiting disc is used for limiting the bushing (21), and a step surface formed at a rear end of the limiting disc is used for limiting the bearing.

3. The generator magnetic steel performance detection device according to claim 2, wherein the bearing includes a front bearing (16) and a rear bearing (14), an inner ring (15) and an outer ring (7) are disposed between the two bearings, the inner ring (15) is sleeved on the rotating shaft (18) and used for supporting and limiting the inner rings of the two bearings, the outer ring (7) is sleeved in the outer sleeve and used for supporting and limiting the outer rings of the two bearings, and the limiting disc is located at the front end of the front bearing (16).

4. Generator magnetic steel performance detection device according to claim 3, wherein the rear end of the rear bearing (14) is axially limited by a nut (12) screwed on the rotating shaft (18).

5. Generator magnetic steel performance detection device according to claim 4, characterized in that the shaft (18) is provided with a keyway at the mounting nut (12) where an internally toothed lock washer (13) is mounted, said nut being fixed by mounting a fuse on the lock washer (13) and the nut (12).

6. The generator magnetic steel performance detection device according to claim 2, wherein a screw thread is arranged at the front end of the limiting disc of the rotating shaft (18), and the magnetic steel assembly (2) and the bushing (21) are axially limited by a compression screw (20).

7. The generator magnetic steel performance detection device according to claim 1, wherein the front end and the rear end of the stator mounting plate (4) are provided with concentric step surfaces, the step surfaces at the front end are matched with an excircle spigot of the permanent magnet motor stator assembly (3), and the step surfaces at the rear end are matched with an inner hole spigot of the outer sleeve (6).

8. The generator magnetic steel performance detection device according to claim 1, wherein the rear end of the outer sleeve (6) is connected with the dragging table (10) through a flange (8).

Technical Field

The application belongs to the technical field of generator testing, and particularly relates to a generator magnetic steel performance detection device.

Background

In the aviation motor manufacturing industry, after the total assembly of the three-level alternating-current generator is completed, 100% of performance tests are required to judge whether the whole machine meets the design requirements. Generally, the first stage of the three-stage generator is a permanent magnet machine, the second stage is an exciter, and the third stage is a main generator.

Fig. 1 is a schematic structural diagram of a certain aviation three-stage ac generator (hereinafter referred to as a motor), in which 1 is a motor body, 2 is a magnetic steel assembly, 3 is a permanent magnet motor stator assembly, as a first-stage permanent magnet motor, a rotor of the motor is a magnetic steel assembly, referring to fig. 2, a through-body key slot is formed in a position L2-1 of the magnetic steel assembly, and a through-hole is formed in a position phi 2-1 of the magnetic steel assembly. The electricity will be used as the exciter input to the second stage, which outputs to excite the third stage to generate electricity. Therefore, the magnetic steel component on the first-stage rotor is a source of energy of the whole generator, and whether the performance of the magnetic steel meets the requirement is an important judgment basis for whether the performance of one three-stage alternating-current generator can reach the standard.

The existing detection on the performance of the magnetic steel is to mount the magnetic steel on a motor rotor, carry out a complete machine test after the assembly of a generator is completed, if the voltage of a permanent magnet machine is unqualified, decompose the generator, detach a magnetic steel component with unqualified performance, replace a new magnetic steel component, test again until qualified, closely relate to the consistency of the quality of the magnetic steel in the whole process, have fewer times of repetition for the magnetic steel with good performance, repeat a plurality of times for the magnetic steel with larger performance difference, and in repeated disassembly and assembly, more fasteners cannot be reused due to deformation, damage and other reasons, thereby causing the problems of delay of the production period and scrapping of components.

The biggest problem of the traditional magnetic steel performance detection method is that: the method is only suitable for small-batch production in the research and development stage, and has the advantages of labor and time consumption for large-batch production, lower production efficiency, large scrapped quantity of components, high manufacturing cost and obvious defects.

Disclosure of Invention

In order to solve at least one of above-mentioned technical problem, this application provides a generator magnet steel performance detection device for accomplishing the performance detection of tertiary alternator magnet steel of aviation to guarantee to make accurate judgement to the magnet steel performance of the generator of will packing into, avoid the repetitive work and the spare part that the dismouting caused to scrap, the device includes:

the rotating shaft comprises a front end and a rear end along the axial direction, the front end of the rotating shaft is connected with a magnetic steel assembly, the rear end of the rotating shaft is connected with an output shaft key of the dragging table, the middle part of the rotating shaft is installed in the outer sleeve through a bearing, the front end of the outer sleeve is connected with a stator installation disc, the rear end of the outer sleeve is connected with the dragging table, and the stator installation disc is used for being matched and connected with a spigot of a permanent magnet machine stator assembly;

the utility model discloses a magnetic steel assembly, including the pivot, the outer loop of bush, its inner ring passes through the fixed cup joint of key the front end of pivot, and the outer loop of bush is provided with the keyway for the installation is surveyed magnetic steel assembly, when magnetic steel assembly installs on the bush and is driven rotatoryly, the magnetic field that magnetic steel assembly produced can be cut to permanent magnet machine stator module's winding, through permanent magnet machine stator module's output line output voltage detects the magnet steel performance.

Preferably, the middle part of the rotating shaft comprises a limiting disc with an enlarged outer diameter, a step surface formed at the front end of the limiting disc is used for limiting the bushing, and a step surface formed at the rear end of the limiting disc is used for limiting the bearing.

Preferably, the bearing comprises a front bearing and a rear bearing, an inner ring and an outer ring are arranged between the two bearings, the inner ring is sleeved on the rotating shaft and used for supporting and limiting the bearing inner rings of the two bearings, the outer ring is sleeved in the outer sleeve and used for supporting and limiting the bearing outer rings of the two bearings, and the limiting disc is located at the front end of the front bearing.

Preferably, the rear end of the rear bearing is axially limited by a nut screwed on the rotating shaft.

Preferably, the rotary shaft is provided with a key groove at which a lock washer with internal teeth is mounted at a mounting nut, and the nut is fixed by mounting a fuse on the lock washer and the nut.

Preferably, the front end of the limiting disc of the rotating shaft is provided with threads, and the magnetic steel component and the bushing are axially limited through a compression screw.

Preferably, the front end and the rear end of the stator mounting disc are both provided with concentric step surfaces, the step surfaces at the front end are matched with an excircle spigot of a stator assembly of the permanent magnet machine, and the step surfaces at the rear end are matched with an inner hole spigot of the outer sleeve.

Preferably, the rear end of the outer sleeve is connected with the dragging table through a flange plate.

The application provides a generator magnet steel performance detection device is fit for big magnetic steel component detection in batches, will wait to detect the magnetic steel component and detect in advance on the device, and the complete machine is gone into to qualified repacking, rejects in advance to the unqualified magnetic steel component of performance, needn't assemble into the complete machine one by one and detect, can effectual reduction repeatability work, improve work efficiency, reduce manufacturing cost, can effectively alleviate operating personnel's intensity of labour moreover.

Drawings

FIG. 1 is a schematic view of an aero three-stage alternator configuration.

Fig. 2 is a schematic structural diagram of a magnetic steel assembly.

Fig. 3 is a schematic structural diagram of an embodiment of the magnetic steel performance detection device for a generator according to the present application.

Fig. 4 is a schematic structural view of the stator mounting plate according to the embodiment shown in fig. 3 of the present application.

Fig. 5 is a schematic view of the structure of the rotating shaft of the embodiment shown in fig. 2 of the present application.

FIG. 6 is a schematic view of section A-A of the embodiment of the present application shown in FIG. 5.

FIG. 7 is a schematic view of section B-B of the embodiment of FIG. 5 of the present application.

The motor comprises a motor body 1, a magnetic steel component 2, a permanent magnet motor stator component 3, a stator mounting plate 4, a screw 5, an outer sleeve 6, an outer ring 7, a flange 8, a nut 9, a dragging table 10, a screw 11, a nut 12, a stop washer 13, a rear bearing 14, an inner ring 15, a front bearing 16, a screw 17, a rotating shaft 18, a key 19, a compression screw 20, a bush 21, a key 22 and a permanent magnet motor stator outgoing line A.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the accompanying drawings in the embodiments of the present application. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are some, but not all embodiments of the present application. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application, and should not be construed as limiting the present application. All other embodiments obtained by a person of ordinary skill in the art without any inventive work based on the embodiments in the present application are within the scope of protection of the present application. Embodiments of the present application will be described in detail below with reference to the drawings.

The invention aims to provide a generator magnetic steel performance detection device, as shown in fig. 3, for convenience of description, the left side is defined as a front end, the right side is defined as a rear end, and the detection device is suitable for all parts and components, and comprises the following components:

the rotating shaft 18 comprises a front end and a rear end along the axial direction, the front end of the rotating shaft 18 is connected with the magnetic steel component 2, the rear end of the rotating shaft 18 is connected with an output shaft key of the dragging table 10, the middle part of the rotating shaft 18 is installed in the outer sleeve 6 through a bearing, the front end of the outer sleeve 6 is connected with the stator mounting disc 4, the rear end of the outer sleeve 6 is connected with the dragging table 10, and the stator mounting disc 4 is used for being matched and connected with a spigot of the permanent magnet motor stator component 3;

bush 21, its inner ring passes through key 19 fixed cup joint and is in the front end of pivot 18, and bush 21's outer loop is provided with the keyway for the installation magnet steel assembly 2 that is surveyed, when magnet steel assembly 2 was installed on bush 21 and was driven rotatoryly, the magnetic field that magnet steel assembly 2 produced can be cut to permanent magnet machine stator module 3's winding, through permanent magnet machine stator module 3's output line output voltage detects the magnet steel performance.

In the present application, the dragging table 10 is a conventional device for providing a rotational force, and the screw/elastic washer, the nut/flat washer, the lock washer 13, the front bearing 16, the rear bearing 14, the key 19, and the key 22 are standard components, commercially available, and other components are described below. The dragging table 10 has an internal spline (involute) structure and an internal spigot, is concentrically butted with external equipment, and is connected with the external equipment through a plurality of studs uniformly distributed.

Fig. 4 is a stator mounting disc, the front end and the rear end of the stator mounting disc 4 are both provided with concentric step surfaces, the step surfaces at the front end are matched with an excircle spigot of the permanent magnet motor stator assembly 3, and the step surfaces at the rear end are matched with an inner hole spigot of the outer sleeve 6, so that concentric positioning is realized.

In the application, the rear end of the outer sleeve 6 is connected with the dragging table 10 through a flange plate 8. The flange 8 is used for realizing the connection of the whole device and the dragging table, and realizes concentric positioning by matching an excircle spigot at the front end with an inner hole of the outer sleeve; the concentric positioning is realized through the matching of the excircle spigot at the rear end and the inner hole of the dragging table; the flange 8 is also provided with a plurality of through holes which are uniformly distributed, and is connected with the outer sleeve 6 through a screw 11 and connected with the dragging platform through a nut 9.

In some alternative embodiments, as shown in fig. 5, the middle portion of the rotating shaft includes a limiting disc with an increased outer diameter, a stepped surface formed at a front end of the limiting disc is used for limiting the bushing 21, and a stepped surface formed at a rear end of the limiting disc is used for limiting the bearing. Referring to fig. 3, the bearing includes a front bearing 16 and a rear bearing 14, an inner ring 15 and an outer ring 7 are disposed between the two bearings, the inner ring 15 is sleeved on the rotating shaft 18 and used for supporting and limiting the bearing inner rings of the two bearings, the outer ring 7 is sleeved in the outer sleeve and used for supporting and limiting the bearing outer rings of the two bearings, and the limiting disc is located at the front end of the front bearing 16. In the present application, the rear end of the rear bearing 14 is axially limited by a nut 12 screwed on the rotating shaft 18.

Referring to fig. 6, the rotary shaft 18 is provided with a key groove at which the internally toothed lock washer 13 is mounted at the mounting nut 12, which is fixed by mounting a fuse on the lock washer 13 and the nut 12.

In the present application, the rotating shaft 18 is a rotating component of the whole set of device, as shown in fig. 5-7, a key slot L18-9 is provided at the position phi 18-1 of the rotating shaft for installing the bushing 21, and the connection is realized through the key 19; the threaded portion of M18-1 is shown for mounting compression screw 20 to act as a compression (test) for magnetic steel assembly 2. Two bearings 14/16 are respectively arranged at two ends of the phi 18-3 position, and an inner ring 15 is arranged between the two bearings; the M18-2 threaded portion is shown for fitting the stop washer 13 and the specialty nut 12, and the grooves of the M18-2 threaded portion are shown for avoiding the internal teeth of the stop washer 13; the external splines (involute) formed by phi 18-6, phi 18-7 and phi 18-8 are arranged at the internal splines of the dragging table.

In this application the spacing dish front end of pivot 18 is provided with the screw thread, will through housing screw 20 magnetic steel component 2 and 21 axial spacing of bush. The compression screw 20 is designed into a hexagonal shape, so that the force is conveniently applied by a wrench during operation.

An application example of the present application is as follows.

In the initial C, S model small-batch production process of a XXX motor developed by a certain model, the performance detection of the magnetic steel adopts the original whole machine detection mode, but the magnetic steel is converted into a D model to enter a batch production state, and the original process method cannot meet the production requirement. And then can realize the magnet steel performance detection of D type product through this application, specific service instruction is as follows:

the first step is as follows: processing the parts and purchasing standard parts;

the second step is that: assembling all the parts and the standard components into a set similar to that shown in fig. 3 (compared with fig. 3, the compression screw 20, the key 22 and the magnetic steel component 2 to be tested are not installed at this time);

the third step: assembling the device on a dragging table;

the fourth step: the magnetic steel component (to be measured) is arranged on the bushing through a key 22 and is fastened by a compression screw 20;

the fifth step: testing (after the dragging table drags the rotor to rotate, the tested magnetic steel generates a rotating magnetic field, after the fixed (process) permanent magnet machine stator winding cuts the magnetic field, voltage is generated in the winding, and the data of the voltage is detected);

and a sixth step: loosening the compression screw and detaching the tested magnetic steel component;

the seventh step: and the fourth step is carried out to test another piece.

… … multiple-time, high-volume testing.

The detection device determined by the patent has the advantages of being convenient to operate, saving time and labor, enabling operators engaged in motor detection to improve production efficiency, being capable of effectively reducing repeated disassembling and assembling work, improving detection efficiency, reducing manufacturing cost and lightening labor intensity of the operators.

Aiming at different tested magnetic steel components, only the corresponding interface process permanent magnet machine stator needs to be changed, the rapid model change in the production process is easy to realize, and the detection device can realize serialization. Easy to popularize and apply and has great practical value.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.