Testing tool for reluctance type rotary transformer stator

Abstract

The utility model provides a reluctance type rotary transformer stator test tool, and relates to the technical field of rotary transformers. The testing tool comprises a base, a motor, a reluctance type rotary transformer rotor, a switching positioning structure and a coaxial limiting table, the base is provided with a lifting structure, the top of the lifting structure is provided with a motor groove, and the motor is arranged in the motor groove. The reluctance type rotary transformer rotor is detachably connected with a transmission shaft of the motor through a switching positioning structure, and the reluctance type rotary transformer rotor and the transmission shaft are coaxial; the coaxial limiting table comprises a supporting structure and a limiting table body, the limiting table body comprises a stator containing table and two shrinkage limiting structures, a through hole is formed in the middle of the stator containing table, the supporting structure is fixedly connected with the base and the stator containing table, and the two shrinkage limiting structures are arranged on the side, away from the base, of the stator containing table. The tool provides a device capable of testing the stator, and by applying the tool, the situation that the stator which does not meet the standard participates in the overall assembly of the reluctance type rotary transformer can be avoided.

Description

Technical Field

[0001] This application relates to the field of rotary transformer technology, and in particular to a stator testing fixture for a reluctance rotary transformer. Background Technology

[0002] In the field of rotary transformers, reluctance rotary transformers have the advantages of reliability, simple structure, and ease of manufacturing, and are widely used in applications requiring high reliability, such as new energy vehicles. The excitation winding and output winding of a reluctance rotary transformer are both located on the stator. Through a special concave-convex design of the rotor shape, the air gap becomes uneven, resulting in a magnetic field that changes with the rotation angle and air gap permeability. This causes the air gap magnetic field to change in the same way, allowing the output winding to output a sine or cosine signal.

[0003] The special shape design not only requires extremely high accuracy in the rotor's shape and size, but also necessitates ensuring the uniformity and symmetry of the stator's inner wall. Traditional testing involves testing the entire assembled reluctance rotary transformer; if it fails, the entire unit is considered defective, easily wasting standard-compliant rotors and other components. Therefore, it is necessary to test the stator beforehand.

[0004] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0005] This application provides a stator testing fixture for a reluctance rotary transformer, which at least to a certain extent provides a fixture that can pre-test the rotor of the reluctance rotary transformer, thereby avoiding the participation of non-standard stators in the assembly of the reluctance rotary transformer and reducing the waste of rotors and other accessories.

[0006] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.

[0007] According to one aspect of this application, a stator testing fixture for a reluctance rotary transformer is provided, comprising: a base, a motor, a reluctance rotary transformer rotor, a transition positioning structure, and a coaxial limiting stage; wherein, the base has a lifting structure, the top of the lifting structure has a motor slot, and the motor is disposed in the motor slot; the reluctance rotary transformer rotor is detachably connected to the drive shaft of the motor through the transition positioning structure, and the reluctance rotary transformer rotor is coaxial with the drive shaft; the coaxial limiting stage includes a support structure and a limiting stage, the limiting stage includes a stator placement platform and two retractable limiting structures, the stator placement platform has a through hole at its middle position, the support structure is fixedly connected to the base and the stator placement platform, and the two retractable limiting structures are disposed on the side of the stator placement platform away from the base; the through hole allows the transition positioning structure to move through along the axial direction of the drive shaft, the axis of the two retractable limiting structures is the same as the axis of the drive shaft, and each retractable limiting structure moves toward or away from the axis.

[0008] By configuring a coaxial limiting stage, which includes a stator placement stage and two retractable limiting structures, the stator to be tested (the stator of the reluctance rotary transformer, hereinafter referred to as the stator) can be fixed on the stator placement stage, thereby forming a reluctance rotary transformer with the rotor of the reluctance rotary transformer (hereinafter referred to as the rotor). When the rotor can rotate with the motor, the working state of the reluctance rotary transformer can be simulated, thereby testing the stator to be tested and detecting whether the stator meets the standard. This can prevent non-standard stators from participating in the overall assembly of the reluctance rotary transformer, thereby reducing the waste of the rotor and other components.

[0009] Furthermore, by configuring through holes and a lifting platform, the rotor can be easily replaced for testing different types of stators.

[0010] Furthermore, by setting two shrinkage limiting structures, the tooling can be configured with different stators, thereby testing stators of different sizes while maintaining the stability of the stator.

[0011] Furthermore, by setting up a motor slot, the motor's position on the base can be made more stable and less prone to shaking, thereby making the test results of the test subject more accurate and more reliable.

[0012] In one embodiment of this application, both of the contraction limiting structures are arc-shaped, and the arcs are bent toward the axis.

[0013] By configuring the shrinkage limiting structure to be all arc-shaped, the stator can be more securely fixed.

[0014] In one embodiment of this application, it further includes a speed regulating device, which is electrically connected to the motor.

[0015] By configuring a speed adjustment device, the performance of the quanta under test can be tested at different speeds, so as to comprehensively test the quanta under test.

[0016] In one embodiment of this application, it further includes: a support column and a shrinkage limiting structure; the support column is disposed on the base, and the shrinkage limiting structure is disposed on the support column, the shrinkage limiting structure being used to fix the top of the reluctance rotary transformer rotor in the radial direction.

[0017] By configuring support columns and a shrinkage limiting structure, the stability of the rotor's position during testing can be ensured, preventing rotor swaying and thus ensuring the accuracy and reliability of the test.

[0018] In one embodiment of this application, the retraction limiting structure includes: a telescopic crossbar, a bearing, and a positioning rod; the telescopic crossbar is rotatably connected to the support column; the bearing is fixedly disposed at the end of the telescopic crossbar away from the support column and is in the same direction as the axis of the reluctance rotary transformer rotor; one end of the positioning rod is fixedly connected to the shaft of the bearing, and the other end is detachably connected to the top of the reluctance rotary transformer rotor.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0021] Figure 1 A schematic diagram of a stator testing fixture for a reluctance rotary transformer according to one embodiment of this application is shown;

[0022] Figure 2 This diagram illustrates a lifting structure in one embodiment of the present application;

[0023] Figure 3 This diagram illustrates a stator testing fixture for a reluctance rotary transformer according to another embodiment of this application. Detailed Implementation

[0024] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided to make this application more comprehensive and complete, and to fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0025] Furthermore, the accompanying drawings are merely illustrative of this application and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore, repeated descriptions of them will be omitted.

[0026] The stator testing fixture for a reluctance rotary transformer in one embodiment of this application can be used as follows: Figure 1 and Figure 2 As shown, the stator testing fixture for the reluctance rotary transformer includes: a base 1, a motor 2, a rotor of the reluctance rotary transformer 3, a transfer positioning structure 4, and a coaxial limiting stage 5.

[0027] The base 1 has a lifting structure 11, and the top of the lifting structure 11 has a motor slot 111, in which the motor 2 is disposed.

[0028] The rotor 3 of the reluctance rotary transformer is detachably connected to the drive shaft 21 of the motor 2 through the transfer positioning structure 4, and the rotor 3 of the reluctance rotary transformer is coaxial with the drive shaft 21.

[0029] The coaxial limiting platform 5 includes a support structure 51 and a limiting platform 52. The limiting platform 52 includes a stator placement platform 521 and two shrinking limiting structures 522. The stator placement platform 521 has a through hole 5211 in the middle position. The support structure 51 is fixedly connected to the base 1 and the stator placement platform 521. The two shrinking limiting structures 522 are located on the side of the stator placement platform 521 away from the base 1.

[0030] The through hole 5211 allows the adapter positioning structure 4 to move along the axial direction of the drive shaft 21. The axes of the two retraction limiting structures 522 are the same as the axis of the drive shaft 21, and each retraction limiting structure 522 moves toward or away from the axis.

[0031] It should be noted that, Figure 1 The rotor 3 of the reluctance rotary transformer is depicted as having a circular cross-section only as an example, intended solely to facilitate the demonstration of the overall structure of the tooling.

[0032] The embodiments of this application do not limit how the lifting structure 11 is specifically implemented; for example, it can be implemented by a hydraulic device.

[0033] The embodiments of this application do not limit how the two shrinkage limiting structures 522 are specifically shrinked, thereby moving towards or away from the axis. For example, a slide rail can be provided on the top surface of the stator placement platform 521, and a slider can be fixedly engaged at the bottom of the shrinkage limiting structure 522, and the slider can be pushed and pulled by a push-pull device.

[0034] By configuring a coaxial limiting stage, which includes a stator placement platform and two retractable limiting structures, the stator to be tested can be fixed on the stator placement platform, thus forming a reluctance rotary transformer with the rotor of the reluctance rotary transformer. When the rotor can rotate with the motor, the working state of the reluctance rotary transformer can be simulated, thereby testing the stator to be tested and detecting whether the stator meets the standard. This can prevent non-standard stators from participating in the overall assembly of the reluctance rotary transformer, thereby reducing the waste of rotors and other components.

[0035] Furthermore, by configuring through holes and a lifting platform, the rotor can be easily replaced for testing different types of stators.

[0036] Furthermore, by setting two shrinkage limiting structures, the tooling can be configured with different stators, thereby testing stators of different sizes while maintaining the stability of the stator.

[0037] Furthermore, by setting up a motor slot, the motor's position on the base can be made more stable and less prone to shaking, thereby making the test results of the test subject more accurate and more reliable.

[0038] In one embodiment, both contraction limiting structures 522 are arc-shaped, and the arcs bend toward the axis.

[0039] By configuring the shrinkage limiting structure to be all arc-shaped, the stator can be more securely fixed.

[0040] In one embodiment, the stator testing fixture for a reluctance rotary transformer further includes a speed regulating device, which is electrically connected to the motor.

[0041] By configuring a speed adjustment device, the performance of the quanta under test can be tested at different speeds, so as to comprehensively test the quanta under test.

[0042] In one embodiment, such as Figure 3 As shown, the stator testing fixture for the reluctance rotary transformer also includes: a support column 6 and a telescopic limiting structure 7.

[0043] The support column 6 is mounted on the base 1, and the telescopic limiting structure 7 is mounted on the support column 6. The telescopic limiting structure 7 is used to fix the top of the reluctance rotary transformer rotor 3 in the radial direction.

[0044] By configuring support columns and a shrinkage limiting structure, the stability of the rotor's position during testing can be further ensured, preventing rotor swaying and thus ensuring the accuracy and reliability of the test.

[0045] In one embodiment, the telescopic limiting structure 7 includes: a telescopic crossbar 71, a bearing 72, and a positioning rod 73.

[0046] The telescopic crossbar 71 is rotatably connected to the support column 6.

[0047] The bearing 72 is fixedly installed at the end of the telescopic crossbar 71 away from the support column 6, and is in the same direction as the axis of the rotor 3 of the reluctance rotary transformer.

[0048] One end of the positioning rod 73 is fixedly connected to the rotating shaft of the bearing 72, and the other end is detachably connected to the top of the rotor 3 of the reluctance rotary transformer.

[0049] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope of this application is indicated by the appended claims.

Claims

1. A magnetic reluctance resolver stator test fixture, characterized by, The utility model relates to a magnetic resistance type rotary transformer rotor positioning device, including: Base (1), motor (2), magnetic resistance type rotary transformer rotor (3), transfer positioning structure (4) and coaxial limiting platform (5); Among them, the base (1) has a lifting structure (11), the top of the lifting structure (11) has a motor slot (111), the motor (2) is arranged in the motor slot (111); The magnetic resistance type rotary transformer rotor (3) is detachably connected with the transmission shaft (21) of the motor (2) through the transfer positioning structure (4), and the magnetic resistance type rotary transformer rotor (3) is coaxial with the transmission shaft (21); The coaxial limiting platform (5) includes a support structure (51) and a limiting platform (52), the limiting platform (52) includes a stator placement platform (521) and two contraction limiting structures (522), the middle position of the stator placement platform (521) has a through hole (5211), the support structure (51) is fixedly connected with the base (1) and the stator placement platform (521), and the two contraction limiting structures (522) are arranged on the side of the stator placement platform (521) away from the base (1); The through hole (5211) allows the transfer positioning structure (4) to move through in the axial direction of the transmission shaft (21), the axial center of the two contraction limiting structures (522) is same with the axial center of the transmission shaft (21), and each contraction limiting structure (522) moves towards the axial center or away from the axial center.

2. The magnetoresistive resolver stator test fixture of claim 1, wherein, The shape of the two contraction limiting structures (522) is arc-shaped, and the arc-shaped is curved towards the axial center.

3. The magnetoresistive resolver stator test fixture of claim 1, wherein, Further including: A rotating speed adjusting device, which is electrically connected with the motor (2).

4. The magnetoresistive resolver stator test fixture of claim 1, wherein, Further including: Support column (6), telescopic limiting structure (7); The support column (6) is arranged on the base (1), the telescopic limiting structure (7) is arranged on the support column (6), and the telescopic limiting structure (7) is used for fixing the top of the magnetic resistance type rotary transformer rotor (3) in the radial direction.

5. The magnetoresistive resolver stator test fixture of claim 4, wherein, The telescopic limiting structure (7) includes: telescopic cross bar (71), bearing (72) and positioning rod (73); The telescopic cross bar (71) is rotatably connected to the support column (6); The bearing (72) is fixedly arranged at one end of the telescopic cross bar (71) away from the support column (6), and is same with the axial center direction of the magnetic resistance type rotary transformer rotor (3); One end of the positioning rod (73) is fixedly connected with the rotating shaft of the bearing (72), and the other end is detachably connected with the top of the magnetic resistance type rotary transformer rotor.

Images