Magnetic suspension motor twin-dragging centering tool

Abstract

The utility model belongs to the technical field of magnetic suspension motor twin trawling tests, and discloses a magnetic suspension motor twin trawling centering tool, which comprises an annular connecting frame, a plurality of temperature measuring slots are uniformly distributed on the side wall of the annular connecting frame, and fixed bases are fixedly mounted on the two end walls of the annular connecting frame through a plurality of fasteners. The outer diameter of each fixing base is larger than that of the annular connecting frame, and a plurality of fixing holes used for fixing a motor shell are annularly and evenly distributed in the end face of each fixing base. According to the utility model, the centering effect of the motor rotor is improved, the accuracy of the result of the twin-dragging test is ensured, and the safety of testers is also ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic suspension motor towing test, in particular to a magnetic suspension motor towing and centering tool. Background Art

[0002] The magnetic levitation motor towing test is a method of testing the load or characteristics of the motor. During the test, the rotors of the two motors are placed axially opposite to each other and connected by a coupling or other means to test the motors.

[0003] In the Chinese invention patent with patent application number 201310742040.9, a method for calibrating the zero initial angle of a permanent magnet synchronous motor is proposed. The problem in this patent is that the coaxiality of the rotors on the two motors is manually adjusted, but for the magnetic levitation motor, its speed generally exceeds 20,000 RPM, so the coaxiality requirements of the two rotors are relatively high, and the rotors in this patent are difficult to adjust to be completely aligned, so at high speeds, the accuracy of the test results will be affected, and greater vibration and noise will be generated. In severe cases, the coupling may be thrown out, threatening the life safety of the tester. Utility Model Content

[0004] The main technical problem to be solved by the utility model is to provide a magnetic suspension motor towing centering tooling, which improves the centering effect of the motor rotor, ensures the accuracy of the towing test results, and protects the safety of the test personnel.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A magnetic levitation motor alignment tool comprises an annular connecting frame, a plurality of temperature measuring slots are evenly distributed on the side walls of the annular connecting frame, and a fixed base is fixedly installed on both end walls of the annular connecting frame by a plurality of fasteners, the outer diameter of each fixed base is larger than the outer diameter of the annular connecting frame, and a plurality of fixing holes for fixing the motor housing are evenly distributed in an annular shape on the end surface of the fixed base.

[0007] The following is a further optimization of the above technical solution by the utility model:

[0008] A recessed groove is provided on one end face of each of the fixed bases away from the annular connecting frame, the inner diameter of each recessed groove is the same as the inner diameter of the annular connecting frame, the outer diameter of each recessed groove is the same as the outer diameter of the annular connecting frame, all fasteners are arranged in annular intervals around the axis of the annular connecting frame, and each fixing hole is arranged on the outside of the recessed groove.

[0009] Further optimization: each of the fasteners adopts a fastening bolt, and each fastener is detachably connected to the fixed base and the annular connecting frame in a threaded connection manner.

[0010] Further optimization: a plurality of through holes are evenly distributed in a ring shape on the end surface of the fixed base.

[0011] Further optimization: each of the temperature measuring slots is arranged in a long strip shape, and each of the temperature measuring slots passes through the annular connecting frame.

[0012] The utility model adopts the above technical solution and has the following beneficial effects:

[0013] The technical solution adopted by the utility model is ingenious in conception and reasonable in structure. After the rotors on the two test motors are axially arranged relative to each other, the shells of the two test motors are fixed by two fixed bases, thereby improving the centering effect of the rotors on the two test motors by means of rigid connection.

[0014] The utility model has a simple structure, which not only facilitates the centering operation of the rotors on the two test motors, but also has a centering effect that is much better than the centering effect of manual adjustment. Therefore, the setting of the utility model improves the accuracy of the test results, and also avoids the situation that the coupling may be thrown out due to improper installation due to rotor misalignment, thereby ensuring the safety of the test personnel.

[0015] The temperature measuring slots on the annular connecting frame are used to monitor the temperature of the shaft head of the test motor using a temperature measuring gun, so that the test personnel can understand the temperature rise at the shaft head.

[0016] The utility model is further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 It is a schematic diagram of the overall structure in an embodiment of the utility model.

[0019] In the figure: 1-annular connecting frame; 11-temperature measuring slot; 2-fastener; 3-fixing base; 31-fixing hole; 32-sink; 33-through hole. DETAILED DESCRIPTION

[0020] 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 of 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.

[0021] like Figure 1 As shown, a magnetic levitation motor alignment tool comprises an annular connecting frame 1, on the side wall of which a plurality of temperature measuring slots 11 are evenly distributed, and on both end walls of the annular connecting frame 1 a fixed base 3 is fixedly installed by a plurality of fasteners 2, the outer diameter of each fixed base 3 is larger than the outer diameter of the annular connecting frame 1, and on the end surface of the fixed base 3 a plurality of fixing holes 31 for fixing the motor housing are evenly distributed in an annular shape.

[0022] The specific use principle of the centering tool is as follows: First, the rotors of two test motors (not shown in the figure) are axially placed and the rotors of the two test motors are roughly adjusted to a coaxial position.

[0023] Then, the housings of the two test motors are fixed to the ends of the two fixed bases 3 respectively, and the centering operation of the rotors of the two test motors is achieved through hard connection.

[0024] Compared with the method of manually performing rotor centering adjustment operations and then connecting them with a coupling, this embodiment uses a hard connection method to align the rotors of the two test motors, which not only effectively improves the centering effect of the two rotors, but also improves the safety of the use of the utility model and ensures the safety of the test personnel.

[0025] Moreover, since the rotor of the magnetic levitation motor is very high, whether the rotor is aligned during the towing test will have a very large impact on the test results. Therefore, the setting of the centering tooling effectively improves the accuracy of the towing test results.

[0026] On the other hand, the effective improvement of the centering effect also avoids the occurrence of large vibration and noise during the operation of the test motor due to large rotor centering errors, and even damage to the rotor.

[0027] Among them, a groove 32 is provided on an end face of each fixed base 3 away from the annular connecting frame 1, the inner diameter of each groove 32 is the same as the inner diameter of the annular connecting frame 1, and the outer diameter of each groove 32 is the same as the outer diameter of the annular connecting frame 1. All fasteners 2 are arranged in a circular interval around the axis of the annular connecting frame 1, and each fixing hole 31 is arranged on the outside of the groove 32.

[0028] In this embodiment, the provision of the recessed groove 32 prevents the nut of the fastener 2 from protruding from the end surface of the fixed base 3, thereby preventing interference between the test motor housing and the fixed base 3, thereby improving the reliability and stability of the test motor fixed on the centering fixture.

[0029] Moreover, each fastener 2 is a fastening bolt, and each fastener 2 is detachably connected to the fixed base 3 and the annular connecting frame 1 in a threaded connection manner.

[0030] In this embodiment, a light hole or a threaded hole is penetrated in the sink 32, and a threaded hole adapted to the fastening bolt is provided on the annular connecting frame 1, and the fixing base 3 is detachably mounted on the end of the annular connecting frame 1 by the fastening bolt.

[0031] In this embodiment, the fixed base 3 can be replaced according to the size of the test motor housing, so that the utility model is suitable for towing tests of test motors of different sizes.

[0032] A plurality of through holes 33 are evenly distributed in a ring shape on the end surface of the fixed base 3 .

[0033] In addition, each temperature measuring slot 11 is arranged in a long strip shape, and each temperature measuring slot 11 passes through the annular connecting frame 1 .

[0034] In this embodiment, the size of the temperature measuring slot 11 is adapted to a temperature measuring gun (not shown in the figure) so that the tip of the temperature measuring gun can measure the temperature of the motor shaft head inside the annular connecting frame 1 through the temperature measuring slot 11 .

[0035] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A magnetic levitation motor towing and centering tool, characterized in that: The invention comprises an annular connecting frame (1), wherein a plurality of temperature measuring slots (11) are evenly distributed on the side wall of the annular connecting frame (1), and a fixing base (3) is fixedly mounted on both end walls of the annular connecting frame (1) via a plurality of fasteners (2), wherein the outer diameter of each fixing base (3) is larger than the outer diameter of the annular connecting frame (1), and a plurality of fixing holes (31) for fixing the motor housing are evenly distributed in an annular shape on the end surface of the fixing base (3).

2. The magnetic levitation motor alignment tool according to claim 1 is characterized in that: A recessed groove (32) is provided on one end surface of each of the fixed bases (3) away from the annular connecting frame (1); the inner diameter of each recessed groove (32) is the same as the inner diameter of the annular connecting frame (1); the outer diameter of each recessed groove (32) is the same as the outer diameter of the annular connecting frame (1); all fasteners (2) are arranged at intervals in an annular pattern around the axis of the annular connecting frame (1); and each fixing hole (31) is arranged on the outside of the recessed groove (32).

3. The magnetic levitation motor alignment tool according to claim 2 is characterized in that: Each of the fasteners (2) is a fastening bolt, and each of the fasteners (2) is detachably connected to the fixed base (3) and the annular connecting frame (1) in a threaded connection manner.

4. The magnetic levitation motor alignment tool according to claim 3 is characterized in that: A plurality of through holes (33) are evenly distributed in a ring shape on the end surface of the fixed base (3).

5. The magnetic levitation motor alignment tool according to claim 4 is characterized in that: Each of the temperature measuring slots (11) is arranged in a long strip shape, and each of the temperature measuring slots (11) passes through the annular connecting frame (1).

Images