Synchronous motor test tool

Abstract

The utility model relates to the technical field of dynamic balance testing of synchronous motors, in particular to a synchronous motor testing tool which comprises a synchronous motor, a resonance detection mechanism arranged on a testing platform and a load testing mechanism arranged on the resonance detection mechanism. The resonance detection mechanism comprises a pressure-resistant base arranged on the test platform, two positioning rods arranged in the pressure-resistant base, a base arranged outside the two positioning rods and two cross beams arranged on the base; and the load test mechanism comprises a sliding table arranged on the two cross beams. By arranging the resonance detection mechanism on the test platform and arranging the load test mechanism capable of testing the synchronous motor in the resonance detection mechanism, when the motor is fixed, the dynamic balance of the constant-voltage motor is detected by simulating the movement of the motor in different vibration amplitude states, so that the test rigidity of the motor can be effectively improved, and the test efficiency of the synchronous motor is improved. And the precision of the dynamic balance test in the simulated bumpy state can be improved.

Description

Technical Field

[0001] This utility model relates to the field of synchronous motor dynamic balancing testing technology, specifically a synchronous motor testing fixture. Background Technology

[0002] A synchronous motor is a component that integrates rotation and stillness, electromagnetic change and mechanical motion to realize the conversion of electrical energy and mechanical energy. According to different excitation methods, synchronous motors can be divided into electrically excited synchronous motors and permanent magnet synchronous motors. In order to detect the actual operating efficiency of a synchronous motor, it is necessary to test its performance.

[0003] Currently, there is a dynamic balancing test in the testing of synchronous motors. However, this dynamic balancing test requires setting the motor on a test platform and testing the synchronous motor under load using a frequency converter. However, the basic rigidity of this test is insufficient, and it cannot simulate the dynamic balance of the motor under actual bumpy conditions.

[0004] In view of this, a synchronous motor testing fixture was designed to solve the above problems. Utility Model Content

[0005] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted by this utility model is as follows:

[0007] A synchronous motor testing fixture includes a synchronous motor, a resonance detection mechanism mounted on a testing platform, and a load testing mechanism mounted on the resonance detection mechanism. The resonance detection mechanism includes a compression base mounted on the testing platform, two positioning rods mounted inside the compression base, a base mounted outside the two positioning rods, and two crossbeams mounted on the base. The load testing mechanism includes a slide table mounted on the two crossbeams, a column mounted inside the slide table, a shaft mounted in two bearings at the bottom of the column, and a load-bearing wheel mounted on the outer end of the shaft.

[0008] In a preferred embodiment, the present invention can be further configured such that the load testing mechanism also includes a speed control component disposed at the bottom of the column;

[0009] The speed control component includes a main outer plate, on which two screws are provided, and on which the two screws are provided a secondary outer plate, an adjusting screw installed inside the main outer plate, and a speed reduction pad located at the bottom of the adjusting screw.

[0010] In a preferred embodiment, the present invention can be further configured such that: both the inner end of the shaft and the outer end of the synchronous motor's internal transmission shaft are provided with multi-wedge pulleys, and belts are connected to the two multi-wedge pulleys for transmission.

[0011] In a preferred embodiment, the present invention can be further configured as follows: the load testing mechanism further includes two pins movably installed in two holes inside the slide table, the column is movably installed inside the slide table, and a top plate is installed on the top of the column;

[0012] The bottom of the slide is equipped with a base plate, and a second locking bolt is movably installed inside the top plate, with the threaded section of the second locking bolt adapted to the inside of the base plate.

[0013] In a preferred embodiment, the present invention can be further configured such that the resonance detection mechanism also includes a bottom spring and a top spring disposed outside the positioning rod;

[0014] There are two bottom springs and two top springs, and pressure plates are installed on the top of the two top springs;

[0015] The bottom of the top spring is pressed against the top of the base, and the top of the bottom spring is pressed against the bottom of the base.

[0016] In a preferred embodiment, the present invention can be further configured such that: the resonance detection mechanism is mounted on the top plate of the compression machine base and a first locking bolt is movably mounted in the top plate;

[0017] The bottom end of the first locking bolt is pressed against the top of the pressure plate.

[0018] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0019] 1. This utility model sets up a resonance detection mechanism on a test platform, and sets up a load test mechanism for testing synchronous motors within the resonance detection mechanism. When the motor is fixed, the dynamic balance of the motor under constant voltage is detected by simulating the movement of the motor under different vibration amplitudes. This can effectively improve the test stiffness of the motor and improve the accuracy of dynamic balance test under simulated bumpy conditions.

[0020] 2. This utility model utilizes the column to gradually apply pressure to the shaft and load-bearing wheel when the synchronous motor is fixed and resonance does not occur. At this time, the synchronous motor can be subjected to dynamic balance test under gradual pressure in a static state. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the test of this utility model;

[0022] Figure 2 This is an exploded schematic diagram of the resonance detection mechanism of this utility model;

[0023] Figure 3 This is a schematic diagram of the load testing mechanism of this utility model;

[0024] Figure 4 This is a schematic diagram of the speed control component of this utility model;

[0025] Figure 5 This utility model Figure 4 Enlarged diagram of point A in the middle.

[0026] Figure label:

[0027] 100. Resonance detection mechanism; 110. Compression base; 120. Positioning rod; 130. Bottom spring; 140. Top spring; 150. Top plate; 160. First locking bolt; 170. Base; 180. Crossbeam; 190. Belt;

[0028] 200. Load testing mechanism; 210. Slide table; 220. Pin; 230. Base plate; 240. Column; 250. Top plate; 260. Second locking bolt; 270. Shaft; 280. Load wheel; 290. Speed ​​control assembly; 291. Main outer plate; 292. Secondary outer plate; 293. Adjusting screw; 294. Speed ​​reduction pad;

[0029] 300. Synchronous motor. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0031] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0032] The following describes, with reference to the accompanying drawings, some embodiments of a synchronous motor testing fixture provided by this utility model. Example 1

[0033] Combination Figures 1-5 As shown, the present invention provides a synchronous motor testing fixture, including a synchronous motor 300, a resonance detection mechanism 100 disposed on a test platform, and a load testing mechanism 200 disposed on the resonance detection mechanism 100. The resonance detection mechanism 100 is fixed to the test platform by bolts and is used to simulate a bumpy test state for the synchronous motor 300. The load testing mechanism 200 is used to perform a dynamic balance test of the synchronous motor 300 under gradual pressure in a stationary state.

[0034] The resonance testing mechanism 100 includes a compression base 110 set on the test platform, two positioning rods 120 set inside the compression base 110, a bottom spring 130 and a top spring 140 set outside the positioning rods 120, a base 170 set outside the two positioning rods 120, and two crossbeams 180 set on the base 170.

[0035] The load testing mechanism 200 includes a slide 210 mounted on two crossbeams 180, a column 240 mounted inside the slide 210, a shaft 270 mounted in two bearings at the bottom of the column 240, a load wheel 280 mounted on the outer end of the shaft 270, and a speed control assembly 290 mounted at the bottom of the column 240.

[0036] The speed control assembly 290 includes a main outer plate 291, on which two screws are provided, and on which two screws are secondary outer plates 292 are provided, an adjusting screw 293 is installed inside the main outer plate 291, and a speed reduction pad 294 is provided at the bottom of the adjusting screw 293.

[0037] Currently, the dynamic balancing test platform for synchronous motors suffers from insufficient rigidity, cannot simulate the bumpy motion of the motor, and cannot perform dynamic balancing tests under gradually increasing pressure.

[0038] The device is fixed to the test platform by bolts. At this time, the pressure-resistant base 110, the two positioning rods 120 and the base 170 can provide sufficient rigidity for the synchronous motor 300. As the first locking bolt 160 descends and pushes the pressure plate down, the two top springs 140 will cooperate with the two bottom springs 130 to provide elastic support of different strengths for the base 170. At this time, the base 170 can provide a resonance platform for the synchronous motor 300 under different bumpy conditions.

[0039] When the base 170 is completely locked by the pressure plate, the synchronous motor 300 is running in a non-vibrating state. By controlling the column 240 to drive the shaft 270 and the load wheel 280 to gradually descend, the synchronous motor 300, which is continuously pressed by the belt 190, can simulate its dynamic balance under pressure. Example 2

[0040] Combination Figure 1 and Figure 2 As shown, based on Embodiment 1, the resonance detection mechanism 100 is installed on the top plate 150 on the top of the compression machine base 110 and the first locking bolt 160 is movably installed in the top plate 150.

[0041] The bottom end of the first locking bolt 160 is pressed against the top of the pressure plate.

[0042] Preferably, the compression machine base 110 has an overall U-shaped structure, and the inner wall of the compression machine base 110 is provided with sliders, and the sliders on the inner wall of the compression machine base 110 are adapted to be engaged in two sliding grooves in the base 170.

[0043] The bottom of the pressure-resistant machine base 110 is provided with a pad to increase frictional resistance, and the outside of the base plate of the pressure-resistant machine base 110 is provided with a raised partition.

[0044] There are two bottom springs 130 and two top springs 140, and pressure plates are installed on the top of the two top springs 140.

[0045] The bottom of the top spring 140 is pressed against the top of the base 170, and the top of the bottom spring 130 is pressed against the bottom of the base 170.

[0046] Preferably, the two positioning rods 120 are used to provide vibration protection for the base 170. As the first locking bolt 160 rotates clockwise, the pressure plate pressed by the bottom end of the first locking bolt 160 can press the two top springs 140. Under the pressure of the two bottom springs 130, the base 170 can perform dynamic balance tests on the synchronous motor 300 under different bump amplitudes. Example 3

[0047] Combination Figures 3-5 As shown, in the above embodiment, the load testing mechanism 200 also includes two pins 220 that are movably installed in two holes inside the slide table 210, the column 240 is movably installed inside the slide table 210, and the top of the column 240 is equipped with a top plate 250.

[0048] Preferably, the crossbeam 180 has evenly distributed insertion holes inside, and the slide table 210 adjusts the hole spacing on the two crossbeams 180 through two pins 220.

[0049] The bottom of the slide table 210 is equipped with a base plate 230, and the top plate 250 is movably installed with a second locking bolt 260, and the threaded section of the second locking bolt 260 is adapted to the interior of the base plate 230.

[0050] Preferably, the base plate 230 is fixed to the groove at the bottom of the slide table 210 by two bolts, and the interior of the base plate 230 is provided with a screw hole adapted to the threaded section of the second locking bolt 260.

[0051] The top plate 250 is fixed to the top of the column 240 by two bolts. The top plate 250, together with the second locking bolt 260, provides the column 240 with active lifting and lowering traction.

[0052] Both the inner end of the shaft 270 and the outer end of the inner drive shaft of the synchronous motor 300 are equipped with multi-ribbed pulleys, and belts 190 are connected to the two multi-ribbed pulleys for transmission.

[0053] Preferably, the two multi-ribbed pulleys are provided with evenly distributed annular grooves. According to the pressure required to be applied to the synchronous motor 300, a certain number of belts 190 can be set on the multi-ribbed pulleys to selectively control the pressure on the synchronous motor 300.

[0054] The working principle and usage process of this utility model are as follows: The pressure-resistant base 110 is fixed to the top of the test platform using multiple bolts. Then, the first locking bolt 160 is adjusted. At this time, the bottom end of the first locking bolt 160 will squeeze the pressure plate on the top of the two top springs 140. With the compression of the two top springs 140 and the two bottom springs 130, the base 170 located between the two adjacent sets of top springs 140 and bottom springs 130 can provide shock-absorbing support for the placed synchronous motor 300.

[0055] The overall vibration frequency of the base 170 is controlled by adjusting the compression of the two bottom springs 130 and the two top springs 140. Then, the slide table 210 is slid along the top of the two crossbeams 180 until the slide table 210 fixes the synchronous motor 300. Then, the slide table 210 and the two crossbeams 180 are fixed by the two pins 220. Then, the second locking bolt 260 is controlled to rotate counterclockwise. At this time, the column 240 drives the shaft 270 and the load wheel 280 to lift upward. Then, the belt 190 is connected to the two multi-ribbed pulleys of the shaft 270 and the synchronous motor 300. Then, the second locking bolt 260 is controlled to rotate clockwise until the two multi-ribbed pulleys separate and the light belt 190 is tightened.

[0056] As the synchronous motor 300 starts, the high-speed rotation of the transmission shaft inside the synchronous motor 300 will cause the multi-wedge pulley at the outer end of the transmission shaft to drive the belt 190, which in turn drives the shaft 270 and the load wheel 280 to rotate. At this time, the belt 190 under the initial pressure can provide test pressure for the dynamic balance of the synchronous motor 300.

[0057] At this time, the base 170 under resonance can provide a simulated external bumpy state for the synchronous motor 300 during actual testing. The reaction force applied to the synchronous motor 300 by the impact force of the resonance of the bottom spring 130 and the top spring 140 can be used to test the relationship between the dynamic balance of the synchronous motor 300 under balanced pressure and the external resonance.

[0058] When the bottom spring 130 and the top spring 140 are fully locked until there is no resonance in the base 170, the column 240 is adjusted to continue to descend, thereby applying a gradual pressure to the transmission shaft inside the synchronous motor 300. At this time, the actual dynamic balance performance of the synchronous motor 300 under different pressure conditions can be simulated.

[0059] In this invention, the term "multiple" refers to two or more items unless otherwise expressly defined. The term "and / or" as used herein includes any and all combinations of one or more of the related listed items. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0060] It should be noted that when a component is referred to as being "assembled on," "mounted on," "fixed to," or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementation.

[0061] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A synchronous motor testing fixture, comprising a synchronous motor (300), characterized in that, It also includes a resonance detection mechanism (100) set on the test platform and a load testing mechanism (200) set on the resonance detection mechanism (100). The resonance detection mechanism (100) includes a compression base (110) set on the test platform, two positioning rods (120) set inside the compression base (110), a base (170) set outside the two positioning rods (120), and two crossbeams (180) set on the base (170). The load testing mechanism (200) includes a slide (210) mounted on two crossbeams (180), a column (240) mounted inside the slide (210), a shaft (270) mounted in two bearings at the bottom of the column (240), and a load wheel (280) mounted on the outer end of the shaft (270).

2. The synchronous motor testing fixture according to claim 1, characterized in that, The load testing mechanism (200) also includes a speed control component (290) disposed at the bottom of the column (240). The speed control assembly (290) includes a main outer plate (291), on which two screws are provided, and on which two screws are secondary outer plates (292), an adjusting screw (293) installed inside the main outer plate (291), and a speed reduction pad (294) provided at the bottom of the adjusting screw (293).

3. The synchronous motor testing fixture according to claim 1, characterized in that, The inner end of the shaft (270) and the outer end of the internal transmission shaft of the synchronous motor (300) are both provided with multi-wedge pulleys, and belts (190) are connected to the two multi-wedge pulleys for transmission.

4. The synchronous motor testing fixture according to claim 1, characterized in that, The load testing mechanism (200) also includes two pins (220) movably installed in two holes inside the slide (210), the column (240) is movably installed inside the slide (210), and a top plate (250) is installed on the top of the column (240). The bottom of the slide (210) is fitted with a base plate (230), and a second locking bolt (260) is movably installed inside the top plate (250), with the threaded section of the second locking bolt (260) adapted to the interior of the base plate (230).

5. The synchronous motor testing fixture according to claim 1, characterized in that, The resonance detection mechanism (100) also includes a bottom spring (130) and a top spring (140) disposed outside the positioning rod (120). The number of bottom springs (130) and top springs (140) are both two, and pressure plates are installed on the top of the two top springs (140); The bottom of the top spring (140) is pressed against the top of the base (170), and the top of the bottom spring (130) is pressed against the bottom of the base (170).

6. The synchronous motor testing fixture according to claim 1, characterized in that, The resonance detection mechanism (100) is installed on the top plate (150) on the top of the compression machine base (110) and the first locking bolt (160) is movably installed in the top plate (150). The bottom end of the first locking bolt (160) is pressed against the top of the pressure plate.

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