High speed motor dynamometer

Abstract

This application discloses a high-speed motor dynamometer device including a base, a secondary test motor, a torque sensor, a shaft box, and a diaphragm coupling sequentially connected along the axial direction on the base, and a mounting seat and an adjustment mechanism located on one side of the diaphragm coupling. The mounting seat is used to mount the main test motor, which can be connected to the diaphragm coupling. The adjustment mechanism is connected to the mounting seat and is used to drive the mounting seat to slide under external force. When installing the diaphragm coupling at one end of the shaft box, the adjustment mechanism can be used to move the mounting seat and the main test motor away from the secondary test motor, providing more installation space for the diaphragm coupling. After installation, the main test motor can be brought closer to the diaphragm coupling for docking, which can improve assembly efficiency and assembly accuracy.

Description

Technical Field

[0001] This application relates to the field of motor testing equipment, and in particular to a high-speed motor dynamometer. Background Technology

[0002] As a core device for converting electrical energy into mechanical energy, electric motors are widely used in industry, transportation, and home appliances. Their performance directly affects the reliability, energy efficiency, and lifespan of the equipment. After production, rigorous performance testing is required to ensure compliance with design standards and prevent malfunctions caused by insulation aging, bearing wear, winding short circuits, and other issues. With the development of sensor technology and digital signal processing technology, modern testing systems can achieve real-time data acquisition, remote monitoring, and intelligent analysis, significantly improving testing efficiency and accuracy. They can quickly process dynamic parameters such as torque and speed. Currently, in motor testing equipment, the main test motor and the auxiliary test motor are generally connected by a coupling, and the distance between the two motors is not adjustable, affecting the installation of the coupling. Utility Model Content

[0003] This application proposes a high-speed motor dynamometer device that can adjust the distance between the main test motor and the auxiliary test motor, providing a larger installation space for the coupling and improving assembly efficiency.

[0004] This application proposes a high-speed motor dynamometer device, comprising:

[0005] Base;

[0006] The accompanying motor is located at one end of the base;

[0007] A torque sensor is located on the output shaft of the accompanying motor.

[0008] The axle box includes a housing mounted on the base and a drive shaft passing through the housing. One end of the drive shaft is connected to the end of the torque sensor away from the accompanying motor.

[0009] A diaphragm coupling is connected to the drive shaft;

[0010] The mounting base is slidably disposed on the base for mounting the main test motor, and the sliding direction is along the axial direction;

[0011] An adjustment mechanism is provided on the base and connected to the mounting base. The adjustment mechanism is used to drive the mounting base to slide under external force.

[0012] In some embodiments, the high-speed motor measuring device further includes a guide rail parallel to the base and a slider disposed at the bottom of the mounting base, the slider being slidably connected to the guide rail, the length direction of the guide rail being along the axial direction.

[0013] In some embodiments, the adjustment mechanism further includes:

[0014] A lead screw is arranged axially and located between the guide rails, and the lead screw is rotatably mounted on the base;

[0015] The nut engages with the lead screw and is connected to the mounting base.

[0016] In some embodiments, the high-speed motor dynamometer further includes a drive motor, which is mounted on the base and connected to the lead screw to drive the lead screw to rotate.

[0017] In some embodiments, the adjustment mechanism further includes an adjustment handwheel connected to the lead screw for driving the lead screw to rotate.

[0018] In some embodiments, the adjustment mechanism further includes a transmission assembly connecting the handwheel and the lead screw.

[0019] In some embodiments, the transmission assembly includes a worm gear disposed at one end of the lead screw and a worm cooperating with the worm gear, the worm being vertically arranged and the handwheel being disposed at the upper end of the worm.

[0020] In some embodiments, the transmission assembly includes a first bevel gear disposed at one end of the lead screw, a second bevel gear meshing with the first bevel gear, and a central shaft disposed at the center of the second bevel gear, the central shaft being vertically arranged, and the handwheel being disposed at the upper end of the central shaft.

[0021] In some embodiments, the mounting base is provided with a through hole for the shaft of the main test motor to pass through, and mounting holes arranged around the through hole.

[0022] In some embodiments, the high-speed motor dynamometer further includes a protective cover disposed on the base, wherein the accompanying motor, torque sensor, axle box and diaphragm coupling are located inside the protective cover, and one end of the diaphragm coupling away from the drive shaft passes through the protective cover.

[0023] The high-speed motor dynamometer device in this embodiment includes a base, a secondary test motor, a torque sensor, a shaft box, and a diaphragm coupling connected sequentially along the axial direction on the base, and a mounting seat and an adjustment mechanism located on one side of the diaphragm coupling. The mounting seat is used to mount the main test motor, which can be connected to the diaphragm coupling. The adjustment mechanism is connected to the mounting seat and is used to drive the mounting seat to slide under external force. When installing the diaphragm coupling at one end of the shaft box, the adjustment mechanism can be used to move the mounting seat and the main test motor away from the secondary test motor, providing more installation space for the diaphragm coupling. After installation, the main test motor can be brought closer to the diaphragm coupling for docking, which can improve assembly efficiency and assembly accuracy. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of a high-speed motor dynamometer device in one embodiment of this application;

[0025] Figure 2 This is a cross-sectional view of a high-speed motor dynamometer device in one embodiment of this application;

[0026] Figure 3 This is a top view of a high-speed motor dynamometer device in one embodiment of this application;

[0027] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The solutions in the embodiments of this application will be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments in this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0029] It should be noted that all directional indicators in the embodiments of this application, such as up, down, left, right, front, back, etc., are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0030] It should also be noted that when a component is described as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is described as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0031] Furthermore, the descriptions involving "first," "second," etc., in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0032] This application proposes a high-speed motor dynamometer measuring device, referring to... Figures 1 to 3The high-speed motor dynamometer includes: a base 10; a secondary test motor 21 located at one end of the base 10; a torque sensor 22 located on the output shaft of the secondary test motor 21; a shaft housing 23, including a housing on the base 10 and a drive shaft passing through the housing, one end of the drive shaft being connected to the end of the torque sensor 22 away from the secondary test motor 21; a diaphragm coupling 24 connected to the drive shaft; a mounting base 25 slidably mounted on the base 10 for mounting the main test motor, with the sliding direction along the axial direction; and an adjustment mechanism located on the base 10 and connected to the mounting base 25, used to drive the mounting base 25 to slide under external force. When installing the diaphragm coupling at one end of the shaft housing 23, the adjustment mechanism can be used to move the mounting base 25 and the main test motor away from the secondary test motor 21, providing more installation space for the diaphragm coupling 24. After installation, the main test motor can be brought closer to the diaphragm coupling 24 for docking, which can improve assembly efficiency and assembly accuracy.

[0033] In this embodiment, the base 10 can be a cast iron platform with T-slots for mounting and fixing the main test motor, auxiliary test motor 21, torque sensor 22, and other equipment. The diaphragm coupling 24 consists of at least one diaphragm and two bushings. The diaphragm is fastened to the bushings with pins and generally will not loosen or cause backlash between the diaphragm and bushings. It can compensate for axial, radial, and angular misalignment between the driving and driven motors caused by manufacturing errors, installation errors, load deformation, and temperature rise changes. The diaphragm coupling 24 is a flexible coupling with metal elastic elements. It relies on the metal coupling diaphragm to connect the driving and driven motors and transmit torque, and has the advantages of elastic vibration reduction, no noise, and no need for lubrication. The coupling is applicable to a speed range of 20,000-32,000 rpm. It provides significant length and angular deflection compensation, with an axial range of ±3mm and an angular range of 1-3°. Bearings are provided on the opposite side walls of the shaft box 23, and the drive shaft is fitted with the bearings.

[0034] In some embodiments, the high-speed motor measuring device further includes a guide rail 11 parallel to the base 10 and a slider located at the bottom of the mounting base 25. The slider is slidably connected to the guide rail 11, and the length direction of the guide rail 11 is along the axial direction. In this embodiment, the main measuring motor is mounted on the mounting base 25, which adopts an L-shaped bracket and a lead screw slide design, with a forward and backward movement distance of 600mm. The distance between the end face of the L-shaped bracket and the end face of the coupling is adjustable from 0-400mm, and the overall coaxiality is guaranteed to be ≤0.02mm. The mounting base 25 is provided with a through hole for the shaft of the main measuring motor to pass through, and mounting holes arranged around the through hole. Screws can be installed in the mounting holes to connect with the screw holes on the main measuring motor, thereby fixing the main measuring motor on the mounting base 25.

[0035] In some embodiments, the adjustment mechanism further includes: a lead screw 31, axially arranged and located between the guide rails 11, the lead screw 31 being rotatably mounted on the base 10; and a nut 32, cooperating with the lead screw 31 and connected to the mounting base 25. Additionally, the adjustment mechanism includes an adjustment handwheel 33, connected to the lead screw 31, for driving the lead screw 31 to rotate. The slide table is supported by guide rails 11 on both sides, and the ball screw uses a hand-cranked structure for forward and backward movement. Side positioning plates are installed on both sides to prevent changes in the coaxiality of the motor when the L-shaped bracket moves forward and backward. This allows the motor to be moved forward and backward at any time during installation, ensuring labor savings when the main test motor is replaced later. The design of the positioning plates also eliminates the need for subsequent coaxiality adjustment, achieving a time-saving and labor-saving effect.

[0036] In addition, the high-speed motor dynamometer also includes a drive motor, which is mounted on the base 10 and connected to the lead screw 31 to drive the lead screw 31 to rotate. The adjustment mechanism can also be driven by a motor, with an external motor driving the lead screw 31 to rotate, thereby causing the mounting base 25 to slide, which can save adjustment time. Of course, when using the automatic adjustment function, attention should be paid to the position of the mounting base 25 to avoid interference or collision with the coupling.

[0037] In some embodiments, the adjusting mechanism further includes a transmission assembly 34 connecting the handwheel 33 and the lead screw 31. The transmission assembly 34 includes a worm gear at one end of the lead screw 31 and a worm cooperating with the worm gear. The worm is vertically arranged, and the handwheel 33 is located at the upper end of the worm. Alternatively, the transmission assembly 34 includes a first bevel gear at one end of the lead screw 31, a second bevel gear meshing with the first bevel gear, and a central shaft located at the center of the second bevel gear. The central shaft is vertically arranged, and the handwheel 33 is located at the upper end of the central shaft. In this embodiment, the worm gear or bevel gear set can achieve a reversing function, causing the handwheel 33 to face upwards. Of course, the worm gear also has a certain reduction ratio, which can further improve the adjustment accuracy. The ball screw 31 is a 32mm type, with a diameter of 32mm and a lead of 5mm.

[0038] In some embodiments, the high-speed motor dynamometer also includes a protective cover 12 mounted on the base 10. The auxiliary test motor 21, torque sensor 22, axle box 23, and diaphragm coupling 24 are located inside the protective cover 12, with the end of the diaphragm coupling away from the drive shaft passing through the protective cover 12. In this embodiment, due to the significant wind noise caused by high speed, the auxiliary test motor 21, torque sensor 22, axle box 23, and coupling can be completely covered to reduce equipment noise. The protective cover 12 on the auxiliary test motor side is made of sound-insulating material to prevent internal noise from being transmitted to the environment. A lifting ring is installed on the upper part of the protective cover 12 for easy future inspection and maintenance. Explosion-proof glass is installed on the side for easy observation of the internal operation. In addition, a movable protective cover 12 is installed on the main test motor side, and a lifting ring is also installed on the top. A crane is used for hoisting during daily use.

[0039] In this embodiment, the workflow of the tunnel construction equipment is as follows:

[0040] The high-speed motor dynamometer device in this embodiment includes a base 10, a secondary test motor 21, a torque sensor 22, a shaft box 23, and a diaphragm coupling 24, which are mounted on the base 10 and connected sequentially along the axial direction. It also includes a mounting base 25 and an adjustment mechanism located on one side of the diaphragm coupling 24. The mounting base 25 is used to mount the main test motor, which can be connected to the diaphragm coupling 24. The adjustment mechanism is connected to the mounting base 25 and is used to drive the mounting base 25 to slide under external force. When installing the diaphragm coupling at one end of the shaft box 23, the adjustment mechanism can be used to move the mounting base 25 and the main test motor away from the secondary test motor 21, providing more installation space for the diaphragm coupling 24. After installation, the main test motor can be brought closer to the diaphragm coupling 24 for docking, improving assembly efficiency and accuracy.

[0041] The above are only some or preferred embodiments of this application. Neither the text nor the drawings should limit the scope of protection of this application. All equivalent structural transformations made using the content of this application's specification and drawings under the overall concept of this application, or direct / indirect applications in other related technical fields, are included within the scope of protection of this application.

Claims

1. A high-speed motor dynamometer, characterized in that, include: Base; The accompanying motor is located at one end of the base; A torque sensor is located on the output shaft of the accompanying motor. The axle box includes a housing mounted on the base and a drive shaft passing through the housing. One end of the drive shaft is connected to the end of the torque sensor away from the accompanying motor. A diaphragm coupling is connected to the drive shaft; The mounting base is slidably disposed on the base for mounting the main test motor, and the sliding direction is along the axial direction; An adjustment mechanism is provided on the base and connected to the mounting base. The adjustment mechanism is used to drive the mounting base to slide under external force.

2. The high-speed motor dynamometer device according to claim 1, characterized in that, The high-speed motor measuring device also includes a guide rail parallel to the base and a slider at the bottom of the mounting base. The slider is slidably connected to the guide rail, and the length direction of the guide rail is along the axial direction.

3. The high-speed motor dynamometer device according to claim 2, characterized in that, The adjustment mechanism also includes: A lead screw is arranged axially and located between the guide rails, and the lead screw is rotatably mounted on the base; The nut engages with the lead screw and is connected to the mounting base.

4. The high-speed motor dynamometer according to claim 3, characterized in that, The high-speed motor dynamometer also includes a drive motor, which is mounted on the base and connected to the lead screw to drive the lead screw to rotate.

5. The high-speed motor dynamometer according to claim 3, characterized in that, The adjustment mechanism also includes an adjustment handwheel connected to the lead screw, used to drive the lead screw to rotate.

6. The high-speed motor dynamometer according to claim 5, characterized in that, The adjustment mechanism also includes a transmission assembly that connects the handwheel and the lead screw.

7. The high-speed motor dynamometer according to claim 6, characterized in that, The transmission assembly includes a worm gear located at one end of the lead screw and a worm cooperating with the worm gear. The worm is vertically arranged, and the handwheel is located at the upper end of the worm.

8. The high-speed motor dynamometer according to claim 6, characterized in that, The transmission assembly includes a first bevel gear located at one end of the lead screw, a second bevel gear meshing with the first bevel gear, and a central shaft located at the center of the second bevel gear. The central shaft is vertically arranged, and the handwheel is located at the upper end of the central shaft.

9. The high-speed motor dynamometer according to claim 1, characterized in that, The mounting base is provided with a through hole for the shaft of the main test motor to pass through, and mounting holes are provided around the through hole.

10. The high-speed motor dynamometer according to claim 1, characterized in that, The high-speed motor dynamometer also includes a protective cover on the base. The accompanying motor, torque sensor, axle box and diaphragm coupling are located inside the protective cover. The end of the diaphragm coupling away from the drive shaft passes through the protective cover.

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