CN220893673U

CN220893673U - Rotor dynamic balance testing device

Info

Publication number: CN220893673U
Application number: CN202322851179.9U
Authority: CN
Inventors: 杨章智; 温雄宇; 张平
Original assignee: Chengdu Precision Motor Co ltd
Current assignee: Chengdu Precision Motor Co ltd
Priority date: 2023-10-24
Filing date: 2023-10-24
Publication date: 2024-05-03
Anticipated expiration: 2033-10-24

Abstract

The utility model belongs to the field of motor testing. In view of the problems of poor flexibility and inconvenient installation of a rotor in the existing testing device, the utility model discloses a rotor dynamic balance testing device, which comprises a base; the two supporting seats are symmetrically arranged on the base; the upper end of the supporting seat is provided with a bearing groove for bearing the rotor; the adjusting assembly is used for adjusting the distance between the two supporting seats; the motor is arranged between the two supporting seats; the output end of the motor is connected with a rotating wheel; the rotating wheel is connected with the rotor through a belt; and the lifting assembly is connected with the motor to drive the motor to move up and down. The testing device can be adjusted according to the length of the rotor, and the rotor is convenient to install.

Description

Rotor dynamic balance testing device

Technical Field

The utility model belongs to the field of motor testing, and particularly relates to a rotor dynamic balance testing device.

Background

The rotor of motor is the core part of motor, and the rotor when rotating around the axle center, because the mass distribution of relative axle center is uneven and produce centrifugal force, and this kind of uneven effect causes vibrations, produces noise and accelerates wearing and tearing of axle when the rotor, influences the use experience of product and life-span of product, consequently, the rotor of motor need carry out dynamic balance test to the rotor in the in-process of production processing to the convenience guarantees the steady use of rotor.

Currently, for a specific structure of the existing rotor dynamic balance testing device, reference may be made to a rotor dynamic balance testing system of a turbo generator with the patent application number CN 201020190648.7.

The dynamic balance testing device has the following problems in the actual testing process:

1. The dynamic balance testing device cannot be adjusted according to the size and the length of the rotor because the size and the length of the rotor in the motor are different, so that the problem of poor flexibility exists;

2. The rotor is difficult to install.

Disclosure of Invention

In view of the problems of poor flexibility and inconvenient installation of the rotor in the actual testing process of the conventional rotor dynamic balance device, one of the purposes of the present utility model is to provide a rotor dynamic balance testing device, which can avoid the problem that the rotor moves to two sides and is convenient to install.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

A rotor dynamic balance testing device comprises a base; the two supporting seats are symmetrically arranged on the base; the upper end of the supporting seat is provided with a bearing groove for bearing the rotor; the adjusting assembly is used for adjusting the distance between the two supporting seats; the motor is arranged between the two supporting seats; the output end of the motor is connected with a rotating wheel; the rotating wheel is connected with the rotor through a belt; and the lifting assembly is connected with the motor to drive the motor to move up and down.

In one of the technical schemes disclosed by the utility model, the base is provided with a linear guide rail; the support seat is arranged on the linear guide rail in a sliding manner.

In one of the technical solutions disclosed in the present utility model, the adjusting assembly includes: the screw threads on two sides of the double-ended screw rod are opposite in rotation direction; the driven gear is arranged at one end of the double-end screw rod; the driving gear is matched with the driven gear; the driving motor is connected with the driving gear; the two supporting seats are respectively provided with threaded holes matched with threads on two sides of the double-ended screw rod; the double-headed screw rod penetrates through the threaded hole.

In one of the technical schemes disclosed by the utility model, two double-headed screws are symmetrically arranged on two sides of the supporting seat.

In one of the technical schemes disclosed by the utility model, the lifting component is an electric telescopic rod.

In one of the technical schemes disclosed by the utility model, the bearing groove is V-shaped.

In one of the technical solutions disclosed in the utility model, a baffle is arranged at one side of the bearing groove away from the rotor.

In one of the technical schemes disclosed by the utility model, a plurality of rotatable carrier rollers are arranged on the groove walls of the bearing grooves.

In one of the technical schemes disclosed by the utility model, the bottom of the base is provided with supporting legs; the region of the base between the two supporting seats is provided with a channel penetrating through the base; the motor is arranged in the projection area of the channel, namely, the motor can move up and down along the channel.

From the above description, the beneficial effects of the utility model are as follows:

the distance between the supporting seats is adjusted by arranging the adjusting component, so that the rotor with different lengths can be adapted; meanwhile, the lifting assembly drives the motor to move up and down, so that the tension and the relaxation of the belt are controlled, the rotor can be conveniently taken out and installed, and the motor and the rotor are matched, so that the rotor can be rapidly subjected to dynamic balance test; further, the bearing groove of the supporting seat is designed into a V shape, so that the bearing groove can adapt to rotors with different sizes; meanwhile, a baffle is arranged on one side of the bearing groove far away from the rotor, so that the rotor can be limited, and the stability of the test is improved; finally, the grooves return sth. to its owner or decline a gift of the carrying grooves are provided with rotatable carrier rollers, so that the rotor is more stable in rotation.

Drawings

In order to more clearly illustrate the embodiments of the application or the technical solutions in the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the application and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic three-dimensional structure of the present utility model.

Fig. 2 is a schematic side view of the present utility model.

Fig. 3 is a schematic cross-sectional structure of the present utility model.

Reference numerals: 1-a base; 11-linear guide rail; 12-supporting legs; 13-channel; 2-a supporting seat; 21-a carrying groove; 22-baffle; 23-carrier rollers; 3-an adjustment assembly; 31-double-ended screw; 32-a driven gear; 33-a drive gear; 34-a drive motor; 4-an electric motor; 41-a rotating wheel; 42-a belt; 5-lifting assembly.

Detailed Description

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in various different ways without departing from the spirit or scope of the present invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

Embodiments of the present utility model will be described in detail below with reference to the accompanying drawings.

The embodiment of the utility model discloses a rotor dynamic balance testing device, which has the structure shown in figures 1-3 and comprises a base 1, a supporting seat 2, an adjusting component 3, a motor 4 and a lifting component 5.

Specifically, the upper surface of the base 1 is provided with two parallel linear guides 11. The two supporting seats 2 are slidably arranged on the linear guide rail 11, and the upper end of the supporting seat 2 is provided with a bearing groove 21 for bearing the rotating shafts at the two ends of the rotor to be tested. The adjusting component 3 is connected with the supporting seat 2 and is used for driving the supporting seat 2 to move so as to adjust the distance between the two supporting seats 2. The motor 4 is arranged at the middle part of the two supporting seats 2, and the output end of the motor 4 is provided with a rotating wheel 41; when tested, the wheel 41 and the rotor are connected by a belt 42 to rotate the rotor. The lifting assembly 5 is used for driving the motor 4 to move up and down.

Before actual testing, the supporting seat 2 is driven to move along the linear guide rail 11 by the adjusting component 3 based on the length of the rotor, so that the distance between the supporting seats 2 is adjusted, then, the rotor is placed on the supporting seat 2, the lifting component 5 is started, the motor 4 is driven to move downwards, and the belt 42 is tensioned, so that testing can be performed; when the test is completed, the lifting assembly 5 drives the motor 4 to move upwards, so that the belt 42 is loosened, and the rotor 2 can be taken out.

By adopting the structure, the testing device disclosed by the embodiment of the utility model can carry out adaptive adjustment according to the length of the rotor and is convenient for installing the rotor, so that the flexibility of the testing device is improved.

More specifically, the bearing groove 21 is designed in a V-shape, so that it is possible to accommodate different sizes of rotating shafts, to improve the flexibility of the test device. Considering that the rotor easily slides relatively with the bearing groove 21 when rotating, the end of the bearing groove 21 far away from the rotor is also provided with a baffle 22 to limit the rotor.

More specifically, a rotatable carrier roller 23 is further arranged on the wall of the bearing groove 21, so that the rotor rotates more stably during rotation, and testing work is facilitated.

In some embodiments, the adjustment assembly 3 includes a double-ended screw 31, a driven gear 32, a driving gear 33, and a drive motor 34.

Wherein the threads on both sides of the double-ended screw 31 are opposite in rotation direction; correspondingly, the two supporting seats 2 are respectively provided with threaded holes matched with threads on two sides of the double-headed screw 31; the double-headed screw 31 is inserted into the screw hole. The driven gear 32 is provided at one end of the double-headed screw 31. The driving gear 33 and the driven gear 32 are disposed in cooperation. The driving motor 34 is connected to the driving gear 33 to drive the driving gear 33 to rotate.

By adopting the structure, the driving gear 33 is driven to rotate by the driving motor 34, so that the driven gear 33 is driven to rotate, the double-headed screw 31 is driven to rotate, and the two support seats 2 are made to move in opposite directions or deviate from each other by the threads which are opposite to each other at the two ends of the double-headed screw 31, so that the distance between the support seats 2 is adjusted.

More specifically, the two double-headed screws 31 are symmetrically disposed at both sides of the support base 2, with the purpose of improving the stability of the movement of the support base 2.

As a specific implementation manner of the above embodiment, the lifting assembly 5 is an electric telescopic rod, and it is understood that the lifting assembly 5 may be another linear motion mechanism such as an air cylinder, a hydraulic cylinder, a ball screw, etc., and the embodiment is not limited thereto.

More specifically, the bottom of the base 1 is provided with support legs 12. The region of the base 1 between the support seats 2 is provided with a channel 13 through the base 1. Wherein the motor 4 is arranged in the projection area of the channel 13, i.e. the motor 4 can be moved up and down along the channel 13, thereby facilitating the installation work. The top of the base 1 is also provided with side plates at the two ends of the linear guide rail 11 respectively, and the two ends of the double-headed screw 31 are connected with the side plates in a rotating way respectively.

The working principle of the embodiment of the utility model is as follows:

Before testing, based on the length of the rotor, the driving motor 34 is controlled to rotate so as to drive the double-headed screw 31 to rotate, so that the supporting seats 2 do opposite or opposite movement, and the distance between the supporting seats 2 corresponds to the length of the rotor; after the adjustment is completed, the rotor is placed in the bearing groove 21 of the bearing seat 2; subsequently, the lifting assembly 5 is started to drive the motor 5 to move downwards, so that the belt 42 is tensioned, and the rotor can be driven to rotate; when the test is completed, the lifting assembly 5 drives the motor 4 to move upwards, so that the belt 42 is loosened, and the rotor can be taken out.

As can be seen from the above description, the embodiment of the utility model has the following beneficial effects:

The distance between the supporting seats 2 is adjusted by arranging the adjusting component 3, so that the rotor with different lengths can be adapted; meanwhile, the lifting assembly 5 drives the motor 4 to move up and down, so that the tension and the relaxation of the belt 42 are controlled, the rotor can be conveniently taken out and installed, and the motor and the belt are matched, so that the rotor can be rapidly subjected to dynamic balance test; further, the bearing groove 21 of the supporting seat 2 is designed into a V shape, so that the rotor with different sizes can be adapted; meanwhile, a baffle 22 is arranged on one side of the bearing groove 21 away from the rotor, so that the rotor can be limited, and the stability of the test is improved; finally, the grooves return sth. to its owner or decline a gift of the carrying groove 21 are provided with rotatable idlers 23, so that the rotor is smoother in rotation.

The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the utility model, and is not meant to limit the scope of the utility model, but to limit the utility model to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. A rotor dynamic balance testing device, comprising:

A base;

The two supporting seats are symmetrically arranged on the base; the upper end of the supporting seat is provided with a bearing groove for bearing the rotor;

the adjusting assembly is used for adjusting the distance between the two supporting seats;

The motor is arranged between the two supporting seats; the output end of the motor is connected with a rotating wheel; the rotating wheel is connected with the rotor through a belt;

And the lifting assembly is connected with the motor to drive the motor to move up and down.

2. The rotor dynamic balance testing device of claim 1, wherein the base is provided with a linear guide rail; the support seat is arranged on the linear guide rail in a sliding manner.

3. The rotor dynamic balance testing device of claim 2, wherein the adjustment assembly comprises:

the screw threads on two sides of the double-ended screw rod are opposite in rotation direction;

The driven gear is arranged at one end of the double-end screw rod;

the driving gear is matched with the driven gear;

The driving motor is connected with the driving gear;

The two supporting seats are respectively provided with threaded holes matched with threads on two sides of the double-ended screw rod;

The double-headed screw rod penetrates through the threaded hole.

4. The rotor dynamic balance testing device according to claim 3, wherein the number of the double-headed screws is two, and the double-headed screws are symmetrically arranged on two sides of the supporting seat.

5. The rotor dynamic balance testing device of claim 1, wherein the lifting assembly is an electric telescopic rod.

6. The rotor dynamic balance testing device of claim 1, wherein the bearing groove is V-shaped.

7. The rotor dynamic balance testing device of claim 6, wherein a baffle is disposed on a side of the bearing groove away from the rotor.

8. The rotor dynamic balance testing device of claim 6 or 7, wherein a plurality of rotatable carrier rollers are provided on a wall of the carrying groove.

9. The rotor dynamic balance testing device of claim 1, wherein the bottom of the base is provided with supporting legs; the region of the base between the two supporting seats is provided with a channel penetrating through the base; the motor is arranged in the projection area of the channel.