Load equipment for detecting energy-saving motor

Abstract

The utility model discloses load equipment for energy-saving motor detection, which comprises a base, a mounting rack is arranged on the base, a driving shaft and a driven shaft are rotatably arranged on the mounting rack, a magnetic coupler is connected between the driving shaft and the driven shaft, one end of the driven shaft far away from the magnetic coupler is provided with a friction disc, and the friction disc is connected with the driving shaft. And a pressurizing piece for applying resistance to the friction disc is arranged on the base. The load equipment for energy-saving motor detection is simple in structure, enables the motor shaft and the friction disc to be in a flexible connection state, and can automatically slip when the load is too large, thereby playing a role in protecting the motor, preventing the motor from being damaged due to overheating, and being convenient to use.

Description

Technical Field

[0001] This utility model relates to the technical field of motor testing equipment, specifically a load device for testing energy-saving motors. Background Technology

[0002] The electricity used in mining operations is generally purchased from external sources. Electricity consumption flows to production equipment, pump rooms, living support facilities, and some losses. Motors account for 75% of the electricity consumption, and as production increases and mining progresses, electricity consumption increases year by year.

[0003] Electric motors play a crucial role in mine hoisting, ventilation, compressed air, and drainage. Therefore, selecting new materials and processes to improve the energy conversion density of electric motors is a key issue in the application of power semiconductor converter technology. Currently, to ensure the high precision, ease of use, low torque ripple, low noise, sensorless operation, and miniaturization of experimental AC drives, continuous motor testing is necessary. Existing motor testing load loading principles involve applying resistance to the motor through external equipment (such as hydraulic pumps or electric motors) to simulate resistance or loads encountered in actual working environments. This method is mainly used to evaluate and optimize motor performance, including its maximum output power, speed range, and efficiency. However, this load loading method uses a rigid connection between shafts, which can easily lead to excessive motor overheating and even burnout when the load is too large. Therefore, this application provides an energy-saving motor testing load device to solve the above problems. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the existing defects and provide an energy-saving load device for testing motors. It has a simple structure and puts the motor shaft and friction disc in a soft connection state. It can automatically slip when the load is too large, thereby protecting the motor and preventing the motor from overheating and being damaged. It is easy to use and can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a load device for testing energy-saving motors, comprising a base, a mounting bracket on the base, a drive shaft and a driven shaft rotatably mounted on the mounting bracket, and a magnetic coupler connecting the drive shaft and the driven shaft, a friction disc being provided at the end of the driven shaft away from the magnetic coupler, and a pressure member being provided on the base to apply resistance to the friction disc.

[0006] As a preferred embodiment of this invention, a slot is provided at the end of the drive shaft away from the magnetic coupler.

[0007] As a preferred technical solution of this utility model, the pressurizing component includes a horizontally arranged hydraulic cylinder, the telescopic end of the hydraulic cylinder is provided with a push plate, the side of the push plate corresponding to the friction disc is provided with an elastic column, and the end of the elastic column away from the push plate is provided with a friction plate that contacts the friction disc.

[0008] As a preferred technical solution of this utility model, the side of the push plate is provided with an elastic column II, and the telescopic end of the elastic column II is provided with a pressure sensor that contacts the friction plate.

[0009] As a preferred embodiment of this utility model, the upper surface of the base is provided with uniformly distributed mounting holes.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] The energy-saving motor testing load device of this utility model has a simple structure, which puts the motor shaft and the friction disc in a soft connection state. It can automatically slip when the load is too large, thereby protecting the motor and preventing the motor from overheating and being damaged. It is easy to use. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 for Figure 1 A schematic diagram of the right-side view structure;

[0014] Figure 3 This is a schematic diagram of the load device mounted on the testing platform.

[0015] In the diagram: 1. Base, 2. Mounting bracket, 3. Drive shaft, 31. Slot, 4. Driven shaft, 41. Friction disc, 5. Magnetic coupler, 6. Hydraulic cylinder, 7. Push plate, 71. Elastic column one, 72. Friction plate, 8. Elastic column two, 81. Pressure sensor. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-3This utility model provides a technical solution: a load device for testing energy-saving motors, including a base 1, a mounting bracket 2 on the base 1, a drive shaft 3 and a driven shaft 4 rotatably mounted on the mounting bracket 2, and a magnetic coupler 5 connecting the drive shaft 3 and the driven shaft 4. A friction disc 41 is provided at the end of the driven shaft 4 away from the magnetic coupler 5. A pressure-applying component is provided on the base 1 to apply resistance to the friction disc 41. The pressure-applying component applies pressure to the friction disc 41, thereby increasing the motor load. When the load is too large, the magnetic coupler 5 slips, thereby protecting the motor.

[0018] Furthermore, a slot 31 is provided at the end of the drive shaft 3 away from the magnetic coupler 5 for connecting an external connecting shaft.

[0019] Furthermore, the pressurizing component includes a horizontally arranged hydraulic cylinder 6. The telescopic end of the hydraulic cylinder 6 is provided with a push plate 7. The side of the push plate 7 corresponding to the friction disc 41 is provided with an elastic column 71. The end of the elastic column 71 away from the push plate 7 is provided with a friction plate 72 that contacts the friction disc 41. During the motor detection process, the hydraulic cylinder 6 is controlled to shorten, and the hydraulic cylinder 6 drives the push plate 7 to move. The push plate 7 applies pressure to the friction plate 72 through the elastic column 71, increasing the friction between the friction plate 72 and the friction disc 41, thereby achieving the function of adjusting the load.

[0020] Furthermore, the side of the push plate 7 is provided with an elastic column 2 8, and the telescopic end of the elastic column 2 8 is provided with a pressure sensor 81 that contacts the friction plate 72. When the push plate 7 moves, the elastic column 2 8 is squeezed and squeezes the pressure sensor 81. The pressure sensor 81 transmits the data to the external controller, so that the pressure value can be displayed in real time.

[0021] Furthermore, the upper surface of the base 1 is provided with evenly distributed mounting holes, which facilitates the installation of the base 1 onto the testing platform.

[0022] Both elastic column 1 (71) and elastic column 2 (8) are telescopic rod structures with internal springs.

[0023] The pressure sensor 81 used in this invention is a commonly used electronic component in the prior art. Its working method and circuit structure are well-known technologies and will not be described in detail here. The pressure sensor 81 is electrically connected to an external controller.

[0024] When using:

[0025] like Figure 3 As shown, the load device is installed on the testing platform, and the connecting shaft of the testing platform is engaged with the slot 31.

[0026] During the motor testing process, the hydraulic cylinder 6 is shortened, and the hydraulic cylinder 6 drives the push plate 7 to move. The push plate 7 applies pressure to the friction plate 72 through the elastic column 71, increasing the friction between the friction plate 72 and the friction disc 41, thereby achieving the function of adjusting the load.

[0027] As the push plate 7 moves, the elastic column 8 is squeezed and then squeezes the pressure sensor 81. The pressure sensor 81 transmits the data to the external controller, so that the pressure value can be displayed in real time.

[0028] When the pressure is too high, under the action of the magnetic coupler 5, the motor drives the drive shaft 3 to rotate normally through the connecting shaft, and slippage occurs between the driven shaft 4 and the drive shaft 3, thereby avoiding the situation where the motor is overloaded and burns out.

[0029] This utility model has a simple structure, which puts the motor shaft and the friction disc 41 in a soft connection state. It can automatically slip when the load is too large, thereby protecting the motor and preventing the motor from overheating and being damaged. It is easy to use.

[0030] The parts not disclosed in this utility model are all prior art, and their specific structures, materials, and working principles will not be described in detail. Although embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of this utility model, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An energy-saving motor detection load device comprising a base (1), characterized in that: The base (1) is provided with a mounting rack (2), the mounting rack (2) is provided with a driving shaft (3) and a driven shaft (4) which are rotatably arranged, and a magnetic coupler (5) is connected between the driving shaft (3) and the driven shaft (4), one end of the driven shaft (4) away from the magnetic coupler (5) is provided with a friction disc (41), and the base (1) is provided with a pressure applying part for applying resistance to the friction disc (41).

2. The load device for detecting an energy-saving motor according to claim 1, characterized by: The driving shaft (3) is provided with a clamping groove (31) at one end away from the magnetic coupler (5).

3. The load device for detecting an energy-saving motor according to claim 1, characterized by: The pressure applying part comprises a horizontally arranged hydraulic cylinder (6), the telescopic end of the hydraulic cylinder (6) is provided with a push plate (7), the side of the push plate (7) corresponding to the friction disc (41) is provided with an elastic column I (71), and one end of the elastic column I (71) away from the push plate (7) is provided with a friction sheet (72) in contact with the friction disc (41).

4. The load device for detecting an energy-saving motor according to claim 3, characterized by: The side of the push plate (7) is provided with an elastic column II (8), and the telescopic end of the elastic column II (8) is provided with a pressure sensor (81) in contact with the friction sheet (72).

5. The load device for detecting an energy-saving motor according to claim 1, characterized by: The upper surface of the base (1) is provided with uniformly distributed mounting holes.

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