CN214953652U - Brushless motor test bench - Google Patents

Abstract

A brushless motor test bench comprises a dynamometer main frame, wherein a tested motor universal shell and a dynamometer head are mounted on the dynamometer main frame, the tested motor universal shell is in linkage connection with the dynamometer head, the tested motor universal shell is connected with a tested motor driver, the tested motor driver and the dynamometer head are both connected with an alternating current and direct current power supply, the dynamometer head is connected with a torque and rotating speed power meter, the torque and rotating speed power meter is connected with a dynamometer main frame, the tested motor universal shell comprises a shell sleeve formed by detachably assembling a semicircular upper sleeve and a semicircular lower sleeve, the inner wall of the shell sleeve is of a cylindrical structure, and a motor stator is directly fixed in the shell sleeve or is fixed in the shell sleeve through a stator fastener; and end covers serving as bearing ends of the motor rotor are arranged at two ends of the shell sleeve, and a Hall reversing circuit board is mounted on one end cover.

Description

Brushless motor test bench

Technical Field

The utility model belongs to the technical field of the motor performance test, concretely relates to brushless motor test rack.

Background

Dc motors have good mechanical and regulation properties, but dc motors using brush commutation are complex in construction and are subject to mechanical friction. The brushless direct current motor adopts an electronic commutation circuit to realize motor commutation, retains the advantages of the direct current motor, has the advantages of convenient maintenance, reliable operation and long service life, and is increasingly widely used in recent years.

In recent years, a lot of researches on brushless direct current motors have been carried out in China, the influence of rotor magnetic steel of the brushless direct current motors on the performance characteristics of the motors is researched, the influence of stator configuration of the brushless direct current motors and the influence of stator topology on the performance characteristics of the motors are also researched, a certain research part in the motors is required to be replaced continuously in the research process, a new scheme is provided under the existing method, a set of matched motor shell needs to be designed, and the motor shell is connected with test equipment for testing after being assembled in a factory. The method is tedious and time-consuming, and seriously influences the research efficiency.

Disclosure of Invention

For solving the above-mentioned problem that prior art exists, the utility model provides a can conveniently change the motor internals, brushless motor test rack that the commonality is high.

The utility model adopts the technical proposal that:

the utility model provides a brushless motor test rack, includes the dynamometer machine body frame, install on the dynamometer machine body frame and be surveyed general shell of motor, dynamometer head, it is connected with the linkage of dynamometer head to be surveyed the general shell of motor, it is connected with being surveyed motor drive to be surveyed the general shell of motor, be surveyed motor drive with the dynamometer head all is connected with alternating current and direct current power supply, the dynamometer head is connected with moment of torsion rotational speed power appearance, moment of torsion rotational speed power appearance and dynamometer machine owner are connected, its characterized in that: the universal shell of the tested motor comprises a shell sleeve formed by detachably assembling a semicircular upper sleeve and a semicircular lower sleeve, the inner wall of the shell sleeve is of a cylindrical structure, and a motor stator is directly fixed in the shell sleeve or is fixed in the shell sleeve through a stator fastener; and end covers serving as bearing ends of the motor rotor are arranged at two ends of the shell sleeve, and a Hall reversing circuit board is mounted on one end cover. The utility model discloses it is the same rather than the internal diameter to be accepted by the general shell of survey motor, but structure, overall arrangement inequality various decide the rotor part, also can accept to be less than its internal diameter, structure, overall arrangement inequality various decide the rotor part, moreover through this kind of semi-circular structure, can be convenient take out the inside motor part of casing and change.

Furthermore, a plurality of temperature probes of a temperature detection device are fixedly connected to the universal shell of the tested motor, and the temperature detection device is connected with the dynamometer host.

Further, the temperature probe is mounted on one end cover. The temperature probe can detect the temperature rising characteristic of the motor for fixed point positions, the position of the temperature probe can be manually modified, and gaps are reserved at the shell.

Further, the temperature detection equipment is powered by external 5V direct current.

Furthermore, the temperature detection equipment is connected with a dynamometer host machine through a usb interface or an external 5V power supply.

Furthermore, the tested motor driver is electrically connected with a phase line and a Hall line of the tested motor.

Furthermore, a potentiometer which directly rotates to control the rotating speed of the motor is arranged on the tested motor driver, or the tested motor driver is connected with a dynamometer main machine through RS485, and the rotating speed of the motor is controlled through the dynamometer main machine.

Further, a heat dissipation system is arranged on the dynamometer head.

Further, the universal shell of the tested motor is connected with the dynamometer head through a coupler.

Further, the universal shell of the tested motor is fixed on a dynamometer rack through a mounting and calibrating clamp.

The utility model has the advantages that:

1. the utility model discloses can be in the certain condition, to each type of motor stator, electric motor rotor changes the test, reduces research preparation time, improves research efficiency.

2. The utility model discloses can carry out dynamic loading through host computer software to the motor, the motor of being convenient for carries out the operating mode simulation.

Drawings

Fig. 1 is a schematic diagram of the principle structure of the present invention.

Fig. 2 is an explosion structure diagram of the universal casing of the tested motor of the present invention.

In the figure: 1. the tested motor is provided with a universal shell; 2. a coupling; 3. a dynamometer head; 4. installing a calibration clamp; 5. a heat dissipation system; 6. a temperature detection device; 7. a dynamometer machine rack; 8. a motor driver to be tested; 9. an AC/DC power supply; 10. a torque, rotational speed and power meter; 11. a dynamometer main machine; 12. a front end cover; 13. a stator fastener; 14. an upper sleeve; 15. a lower sleeve; 16. and a rear end cap.

Detailed Description

The present invention will be further described with reference to the following specific embodiments, but the present invention is not limited to these specific embodiments. It will be recognized by those skilled in the art that the present invention encompasses all alternatives, modifications, and equivalents as may be included within the scope of the claims.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Referring to fig. 1 and 2, the embodiment provides a brushless motor test bench, which includes a universal casing 1 for a tested motor; a dynamometer head 3; installing a calibration clamp 4; a coupler 2; a heat dissipation system 5; a temperature detection device 6; a dynamometer gantry 7; a tested motor driver 8; an AC/DC power supply 9; a dynamometer host 11; torque tachometer 10. The universal shell 1 of the tested motor is in linkage connection with the dynamometer head 3 through the coupler 2, the universal shell 1 of the tested motor and the dynamometer head 3 are installed on the dynamometer rack 7, and the universal shell 1 of the tested motor is fixed on the dynamometer rack 7 through the installation and calibration clamp 4. The universal shell 1 of the tested motor is connected with a driver 8 of the tested motor, the driver 8 of the tested motor and the dynamometer head 3 are both connected with an alternating current-direct current power supply 9, the dynamometer head 3 is connected with a torque rotating speed power meter 10, the torque rotating speed power meter 10 is connected with a dynamometer host 11, a plurality of temperature probes of a temperature detection device 6 are fixedly connected to the universal shell 1 of the tested motor, and the temperature detection device 6 is connected with the dynamometer host 11. And the heat dissipation system 5 is connected with the dynamometer head 3 and used for dissipating heat for the dynamometer head 3 during working. The utility model provides a cooling system 5, temperature-detecting equipment 6, dynamometer machine rack 7, by measuring motor driver 8, alternating current-direct current power supply 9, dynamometer main unit 11, electronic equipment such as torque, rotational speed and power appearance 10 all can adopt general type equipment.

The universal shell 1 of the motor to be tested comprises a shell sleeve formed by detachably assembling a semicircular upper sleeve 14 and a semicircular lower sleeve 15, the inner diameter and the outer diameter of the semicircular upper sleeve 14 and the semicircular lower sleeve 15 are equal, and the two are positioned by a positioning pin and connected by a screw. The inner wall of the shell sleeve is of a cylindrical structure, and a motor stator is directly fixed in the shell sleeve or fixed in the shell sleeve through a stator fastener 13; the two ends of the casing sleeve are respectively provided with an end cover as a bearing end of the motor rotor, and the end covers are a coin end cover 12 and a rear end cover 16. And a Hall reversing circuit board is mounted on the rear end cover 16. The temperature probe is arranged on the rear end cover 16, the temperature probe can detect the temperature rising characteristics of the motor for fixed point positions, the position of the temperature probe can be manually modified, and gaps are reserved at the shell. The utility model discloses it is the same rather than the internal diameter to be accepted by the general shell of survey motor, but structure, overall arrangement inequality various decide the rotor part, also can accept to be less than its internal diameter, structure, overall arrangement inequality various decide the rotor part, moreover through this kind of semi-circular structure, can be convenient take out the inside motor part of casing and change. A motor stator and a motor rotor are assembled in the universal shell 1 of the tested motor, namely the tested motor is a brushless motor, the tested motor and the dynamometer head 3 are both placed on the dynamometer rack 7, and the position of the tested motor can be adjusted by installing the calibration clamp 4. The utility model discloses a biggest characteristics just can improve motor internal part research efficiency of software testing, can change some key research parts of processing to after the cooperation is assembled into the motor by the general shell of motor under test, test fast.

This embodiment 8 performance of motor driver under test will be higher than the performance of the actual motor under test, connect the phase line and the hall line of motor under test respectively, have the potentiometre can direct rotation control motor speed on the motor driver under test 8, also can be connected with dynamometer host computer 11 through RS485, through the host computer control motor speed of writing oneself to can realize dynamic loading, operating mode simulation.

This embodiment temperature-detecting equipment adopts outside 5V direct current power supply, can use usb and host computer usb interface connection during the power supply, also can be with external 5V power.

The utility model discloses when not testing, the motor element is not packed into in the general casing of motor under test 1, and motor phase line interface disconnection on the motor driver 8 under test still keeps connecting hall wiring mouth. When the test bench is used, firstly, the tested motor needs to be assembled, firstly, the mounting and calibrating clamp 4 can be loosened, the universal casing 1 of the tested motor is taken down, then, the casing is opened, the motor stator and the motor rotor are respectively placed, and then, the whole tested motor is assembled. The Hall reversing circuit board of the brushless direct current motor needs to have a certain corresponding relation with the installation position of the stator, and if the position is incorrect, the Hall reversing circuit board can be adjusted to the correct position by opening the rear end cover of the shell. After the tested motor is assembled, the tested motor is placed on a dynamometer bench 7, the tested motor is adjusted to the position of the same axis as the dynamometer head by adjusting, installing and calibrating the clamp 4, and then the tested motor and the dynamometer head are connected with each other by using the coupler 2. And finally, connecting the phase line of the tested motor with the driver 8 of the tested motor to finish the installation and carry out corresponding test.

Claims (10)

1. The utility model provides a brushless motor test rack, includes the dynamometer machine body frame, install on the dynamometer machine body frame and be surveyed general shell of motor, dynamometer head, it is connected with the linkage of dynamometer head to be surveyed the general shell of motor, it is connected with being surveyed motor drive to be surveyed the general shell of motor, be surveyed motor drive with the dynamometer head all is connected with alternating current and direct current power supply, the dynamometer head is connected with moment of torsion rotational speed power appearance, moment of torsion rotational speed power appearance and dynamometer machine owner are connected, its characterized in that: the universal shell of the tested motor comprises a shell sleeve formed by detachably assembling a semicircular upper sleeve and a semicircular lower sleeve, the inner wall of the shell sleeve is of a cylindrical structure, and a motor stator is directly fixed in the shell sleeve or is fixed in the shell sleeve through a stator fastener; and end covers serving as bearing ends of the motor rotor are arranged at two ends of the shell sleeve, and a Hall reversing circuit board is mounted on one end cover.

2. A brushless motor test rig according to claim 1, wherein: and the universal shell of the tested motor is fixedly connected with a plurality of temperature probes of temperature detection equipment, and the temperature detection equipment is connected with a dynamometer host.

3. A brushless motor test rig according to claim 2, wherein: the temperature probe is mounted on one end cover.

4. A brushless motor test rig according to claim 2, wherein: the temperature detection equipment is powered by external 5V direct current.

5. A brushless motor test rig according to claim 4, wherein: the temperature detection equipment is connected with the dynamometer host through a usb interface or an external 5V power supply.

6. A brushless motor test rig according to claim 1, wherein: and the tested motor driver is electrically connected with a phase line and a Hall line of the tested motor.

7. A brushless motor test rig according to claim 6, wherein: the tested motor driver is provided with a potentiometer which directly rotates to control the rotating speed of the motor, or is connected with the dynamometer main machine through RS485, and the rotating speed of the motor is controlled through the dynamometer main machine.

8. A brushless motor test rig according to claim 1, wherein: and a heat dissipation system is arranged on the dynamometer head.

9. A brushless motor test rig according to claim 1, wherein: the universal shell of the tested motor is connected with the dynamometer head through a coupler.

10. A brushless motor test rig according to claim 1, wherein: the universal shell of the tested motor is fixed on the dynamometer rack through a mounting and calibrating clamp.

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