Stator-rotor resistance machine

Abstract

The utility model discloses a stator and rotor resistance machine which comprises a test base, a liquid flow resistance assembly and a torque test assembly, the surface of the test base is provided with a motor frame, an operation panel and a coupler rotatably installed on the surface of the motor frame, the other end of the coupler is connected with a shaft rod, and the shaft rod is connected with a motor. The liquid flow resistance assembly and the torque testing assembly are fixed on the surface of the testing base, and the liquid flow resistance assembly comprises a circulating liquid box, a pump box, a hydraulic sensor and an electromagnetic flow limiting valve communicated with an inner cavity of the circulating liquid box. According to the utility model, the oil flow is controlled through the pump box and the electromagnetic flow-limiting valve, the load is accurately adjusted, the stable and adjustable stator and rotor load can be provided, different test conditions can be adapted, and the oil is used as a medium, so that the gear pump system can keep higher stability in a high-temperature environment; and the instability phenomenon caused by friction overheating of a traditional brake type load structure is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor performance test technical field, concretely is a kind of stator and rotor resistance machine. BACKGROUND

[0002] Stator and rotor resistance machine is a kind of equipment commonly used in mechanical experiment and test, mainly for measuring the resistance or torque that rotor is subjected to in the process of rotation. It simulates the actual working condition in mechanical system by applying certain load, detects the performance, efficiency of rotor and the interaction with other mechanical components. Such equipment is widely used in motor, wind turbine, aerospace, automobile and other fields, for evaluating the performance and energy efficiency of rotating parts.

[0003] The existing stator and rotor resistance machine usually adopts brake system, such as drum brake, disc brake, etc., to simulate the load of motor by friction. These traditional structures provide different loads by adjusting the pressure or friction of brake, so as to test the output performance of motor. In these systems, friction is usually realized by the contact between brake disc and brake pad, and the load intensity is controlled by adjusting brake force. This method is widely used in motor load test, life test and other fields.

[0004] Defects of traditional technical solutions:

[0005] Temperature and stability problems: traditional brake system is prone to overheating in long-time operation or high-temperature environment, which leads to unstable friction and affects the adjustment accuracy of load and the reliability of test results. Especially in high-temperature environment, brake materials may appear thermal decay or aging, causing load out of control or instability.

[0006] Insufficient durability: traditional brake structure is prone to performance degradation in continuous use due to the constant wear of friction surface, which affects the durability and long-term stability of the system. Especially in high-load, high-frequency test environment, the wear of brake system is more serious, which limits its service life.

[0007] Inaccurate load adjustment: traditional system provides load adjustment through mechanical friction, which has certain adjustment error, especially when precise control of load is required, it may not provide sufficient accurate adjustment. Due to the inconsistency of friction coefficient, the load changes unstably, which affects the accuracy of test results.

[0008] Through the above defects, the existing traditional stator and rotor resistance machine is prone to problems such as overheating and unstable load in high-temperature and long-time work, and the durability and accuracy of the system are limited. Therefore, a more stable, accurate and durable load adjustment scheme is needed to replace the existing brake friction type load system. CONTENT OF UTILITY MODEL

[0009] The present invention aims to solve the technical problems existing in the prior art or related technologies.

[0010] The purpose of this invention is to provide a stator-rotor resistance tester that overcomes problems such as overheating and frictional wear inherent in traditional load structures by improving the load adjustment method and enhancing the system's stability and durability. Through a fluid resistance component and precise hydraulic adjustment, adjustable, stable, and efficient motor load testing is achieved.

[0011] A stator-rotor resistance tester includes: a test base, a fluid flow resistance component, and a torque testing component. The surface of the test base is provided with a motor frame, an operation panel, and a coupling rotatably mounted on the surface of the motor frame. The other end of the coupling is connected to a shaft. The fluid flow resistance component and the torque testing component are fixed to the surface of the test base. The fluid flow resistance component includes a circulating fluid tank, a pump box, a hydraulic sensor, and an electromagnetic flow limiting valve communicating with the inner cavity of the circulating fluid tank. The pump box is fixed to the surface of the circulating fluid tank. Pipelines communicating with the inner cavity of the circulating fluid tank and the end of the electromagnetic flow limiting valve are respectively provided on both sides of the pump box. Two mutually meshing conveying teeth are provided on the inner side of the pump box. A hydraulic sensor is provided at the connection end between the pump box and the electromagnetic flow limiting valve. One end of the shaft is connected to one of the conveying teeth.

[0012] By adopting the above technical solution, the pump box and electromagnetic flow limiting valve provide an adjustable and stable load through precise regulation of oil flow. This design allows the load intensity during the test process to be precisely adjusted according to actual needs, thereby avoiding the performance instability problem caused by overheating in traditional brake friction systems.

[0013] In a preferred embodiment, the present invention can be further configured such that: the motor frame on the test base surface is used for positioning the motor to be tested, and one end of the coupling is provided with a bushing that connects to the stator and rotor of the motor to be tested.

[0014] By adopting the above technical solution, the connection between the coupling and the shaft ensures the precise alignment and stable operation of the stator and rotor of the motor under test, effectively avoiding displacement or loosening during the test and guaranteeing the accuracy of the test results.

[0015] In a preferred embodiment, the present invention can be further configured such that: the inner side of the circulating fluid tank is filled with hydraulic oil, and both ends of the pump box are connected to the inner cavity of the circulating fluid tank through oil pipelines, and the hydraulic sensor and the electromagnetic flow limiting valve are located at the outlet port of the pump box.

[0016] By adopting the above technical solution, the combination of pump box and electromagnetic flow limiting valve ensures stable output of hydraulic fluid. The movement of gears in the pump box is effectively controlled by the flow of hydraulic oil, so that it can still provide stable and accurate load control under high temperature and long-term operation, avoiding the overheating and friction problems of traditional braking systems.

[0017] In a preferred embodiment, the present invention can be further configured such that: the two conveying teeth on the inner side of the pump box engage with each other, and the two conveying teeth are arranged symmetrically about the horizontal centerline of the pipelines on both sides of the pump box.

[0018] In a preferred embodiment, the present invention can be further configured such that: the hydraulic sensor is used to monitor the hydraulic pressure at the outlet of the pump box to determine the output torque of the motor under test; and the electromagnetic flow limiting valve is electrically connected to the output end of the operation panel to adjust the pipeline resistance and regulate the motor load intensity.

[0019] By employing the above technical solution, the hydraulic feedback system, composed of a hydraulic sensor and an electromagnetic flow limiting valve, monitors the hydraulic state at the pump box outlet and adjusts the motor's load intensity in real time. This design enables dynamic adjustment of resistance based on changes in the output torque of the motor under test during the testing process, achieving more precise testing and ensuring the accuracy of load regulation.

[0020] In a preferred embodiment, the present invention can be further configured as follows: the inner side of the brake seat is provided with a hydraulic cylinder for perpendicularizing the surface of the brake disc, and the output end of the hydraulic cylinder is provided with a brake pad that abuts against the surface of the brake disc; the strain gauge is used to detect the force state of the rotating seat and the surface of the brake seat.

[0021] By adopting the above technical solutions, the design of the brake holder and strain gauge effectively achieves precise control and monitoring of the surface stress state of the swivel and brake holder. Real-time detection of surface stress by the strain gauge ensures precise matching between the clamping pressure of the brake disc and brake pads and the motor load, providing a reliable torque adjustment scheme for motor torque testing.

[0022] The beneficial effects achieved by this utility model are as follows:

[0023] 1. In this utility model, the oil flow is controlled by the pump box and the electromagnetic flow limiting valve to precisely adjust the load, providing a stable and adjustable stator and rotor load to adapt to different test conditions. Since oil is used as the medium, the gear pump system can maintain high stability in high-temperature environments, avoiding the instability caused by friction overheating in traditional brake-type load structures. Through the combination of hydraulic sensors and electromagnetic flow limiting valves, precise hydraulic feedback and load adjustment are achieved, thereby ensuring the stability and reliability of the test process under different working conditions.

[0024] 2. In this utility model, the design of the fluid flow resistance component enables relatively stable test conditions under high temperature and long-term operation, avoiding the temperature and friction problems of traditional brake structures and improving the durability of the system.

[0025] 3. In this utility model, by setting up a torque testing component structure, under the control of the brake disc held by the brake seat, the rotating seat follows the deflection movement of the brake disc and drives the strain gauge to deflect and deform, thereby realizing the torque adjustment of the motor under test. Attached Figure Description

[0026] Fig. 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0027] Fig. 2 This is a schematic diagram of the fluid flow resistance component structure according to an embodiment of the present invention;

[0028] Fig. 3 This is a schematic diagram of the torque testing component structure according to an embodiment of the present invention.

[0029] Figure label:

[0030] 100. Test base; 110. Motor frame; 120. Control panel; 130. Coupling; 140. Shaft;

[0031] 200. Fluid flow resistance assembly; 210. Circulating fluid tank; 220. Pump box; 230. Hydraulic sensor; 240. Electromagnetic flow limiting valve; 221. Conveying gear;

[0032] 300. Torque testing assembly; 310. Rotary seat; 320. Brake holder; 330. Brake disc; 340. Strain gauge. Detailed Implementation

[0033] 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.

[0034] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0035] The following is in conjunction with the appendix Figs. 1-3 This invention describes a stator-rotor resistance machine provided by some embodiments of the present invention.

[0036] This embodiment provides a stator-rotor resistance tester based on fluid flow resistance control. Its main components include: a test base 100, a fluid flow resistance assembly 200, and a torque test assembly 300. The following is a detailed description of each component:

[0037] Test base 100: The surface is provided with a positioning device motor frame 110, which is used to position the motor to be tested and ensure the stability of the motor during the test;

[0038] It is equipped with an operation panel 120 for operating and controlling the system;

[0039] A coupling 130 is mounted on the surface of the motor frame 110 for connecting to the stator and rotor of the motor under test. One end of the coupling 130 is connected to a shaft 140, which enables linkage with the fluid resistance assembly 200 and the torque testing assembly 300.

[0040] Hydraulic flow resistance assembly 200 includes a circulating fluid tank 210, a pump housing 220, and a hydraulic sensor 230. Hydraulic fluid is injected into the circulating fluid tank 210. The circulating fluid tank is connected to the pump housing 220 and an electromagnetic flow limiting valve 240 via pipelines to control the fluid flow rate. The pump housing contains two meshing delivery teeth 221, and the hydraulic sensor 230 monitors the fluid flow to adjust the hydraulic flow resistance in real time.

[0041] The flow rate of the oil is controlled by the electromagnetic flow limiting valve 240, and the rotation of the conveying gear 221 in the pump box is precisely adjusted, thereby providing a precise load to the rotor.

[0042] Torque Test Component 300:

[0043] It includes a rotating base 310, a brake holder 320, and a brake disc 330. The rotating base 310 clamps the surface of the brake disc 330 through a hydraulic cylinder and a clamping structure, so that the brake holder 320 and the brake disc 330 move synchronously. The brake holder 320 drives the strain gauge 340 to deflect, and the torque is measured by the change of the electrical signal of the strain gauge 340.

[0044] The strain gauge 340 is fixed on the swivel and is used to monitor the torque changes generated during motor load.

[0045] Working principle: During testing, the motor under test is connected to the hydraulic flow resistance assembly 200 via a coupling. The gear conveying teeth 221 in the hydraulic flow resistance assembly adjust the load intensity through the flow of hydraulic oil. The hydraulic sensor 230 monitors the oil flow in real time, and the electromagnetic flow limiting valve 240 adjusts the oil flow rate, thereby precisely controlling the load on the stator and rotor. The torque testing assembly 300 monitors the torque generated by the motor during the test through the strain gauge 340, and further stabilizes the test process by adjusting the clamping pressure.

[0046] 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.

[0047] 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 stator-rotor resistance machine, characterized in that, include: The test base (100), the fluid flow resistance assembly (200), and the torque testing assembly (300) are provided. The surface of the test base (100) is provided with a motor frame (110), an operation panel (120), and a coupling (130) rotatably mounted on the surface of the motor frame (110). The other end of the coupling (130) is connected to a shaft (140). The fluid flow resistance assembly (200) and the torque testing assembly (300) are fixed to the surface of the test base (100). The fluid flow resistance assembly (200) includes a circulating fluid tank (210), a pump box (220), and a hydraulic sensor (…). 230) and an electromagnetic flow limiting valve (240) communicating with the inner cavity of the circulating liquid tank (210). The pump box (220) is fixed on the surface of the circulating liquid tank (210). The two sides of the pump box (220) are respectively provided with pipelines communicating with the inner cavity of the circulating liquid tank (210) and the end of the electromagnetic flow limiting valve (240). The inner side of the pump box (220) is provided with two mutually meshing conveying teeth (221). The connection end of the pump box (220) and the electromagnetic flow limiting valve (240) is provided with a hydraulic sensor (230). One end of the shaft (140) is connected to one of the conveying teeth (221). The torque testing assembly (300) includes a rotating base (310), a brake holder (320), a brake disc (330), and a strain gauge (340) fixed to one end of the rotating base (310). The other end of the strain gauge (340) is fixedly connected to the surface of the test base (100). The brake holder (320) is fixed to the surface of the rotating base (310), and the brake disc (330) is fixed to the surface of the shaft (140) and rotatably mounted on the inside of the rotating base (310).

2. The stator-rotor resistance machine according to claim 1, characterized in that, The test base (100) has a motor frame (110) on its surface for positioning the motor to be tested, and one end of the coupling (130) is provided with a bushing that connects to the stator and rotor of the motor to be tested.

3. A stator-rotor resistance machine according to claim 1, characterized in that, Hydraulic oil is added to the inside of the circulating liquid tank (210), and the two ends of the pump box (220) are connected to the inner cavity of the circulating liquid tank (210) through oil pipelines. The hydraulic sensor (230) and the electromagnetic flow limiting valve (240) are located at the liquid outlet port of the pump box (220).

4. A stator-rotor resistance machine according to claim 1, characterized in that, The two conveying teeth (221) inside the pump box (220) are mutually driven and meshed, and the two conveying teeth (221) are symmetrically arranged about the horizontal center line of the pipeline on both sides of the pump box (220).

5. A stator-rotor resistance machine according to claim 1, characterized in that, The hydraulic sensor (230) is used to monitor the hydraulic pressure at the outlet of the pump box (220) to determine the output torque of the motor under test. The electromagnetic flow limiting valve (240) is electrically connected to the output end of the operation panel (120) and is used to adjust the pipeline resistance to adjust the motor load intensity.

6. A stator-rotor resistance machine according to claim 1, characterized in that, The inner side of the brake holder (320) is provided with a hydraulic cylinder for perpendicularly rotating the surface of the brake disc (330), and the output end of the hydraulic cylinder is provided with a brake pad that abuts against the surface of the brake disc (330). The strain gauge (340) is used to detect the force state of the rotating seat (310) and the surface of the brake holder (320).

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