CN211855696U

CN211855696U - Rotor dynamic balance test system

Info

Publication number: CN211855696U
Application number: CN202020221041.4U
Authority: CN
Inventors: 牛多邦; 李泽炜; 潘晓博
Original assignee: Suzhou Gorem Intelligent Technology Co Ltd
Current assignee: Suzhou Gorem Intelligent Technology Co Ltd
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-11-03
Anticipated expiration: 2030-02-27

Abstract

The utility model discloses a rotor dynamic balance test system belongs to motor test equipment technical field, including test seat and rotor, the top fixed mounting of test seat has two bearing frames, every all install a plurality of sensors on the bearing frame, just one side fixed mounting at test seat top has test motor, test motor's drive end passes through the one end transmission of shaft coupling with the rotor and links to each other, the bearing frame comprises movable bearing and dead bearing, the top at the test seat is fixed to the dead bearing, just movable bearing sliding connection is in the top of dead bearing, one side fixed mounting of dead bearing has the electro-magnet, one side fixed mounting that the dead bearing was kept away from to the electro-magnet has the base block, the top fixed mounting of base block has the guide pillar. The utility model provides a comparatively troublesome problem of dismouting process of rotor on the bearing frame among the current rotor dynamic balance test system, be favorable to promoting the efficiency of software testing of rotor.

Description

Rotor dynamic balance test system

Technical Field

The utility model relates to a motor test equipment technical field especially relates to a rotor dynamic balance test system.

Background

The vibration of the generator rotor is various, and common vibration faults are rotor mass unbalance, misalignment of an axis, shaft bending, shaft crack, bearing loosening, foundation deformation, oil film whirling, higher harmonic vibration, random vibration and the like. The statistics of the vibration fault diagnosis result show that 90% of the excitation force causing the excessive vibration is the unbalanced force of the rotor, so the dynamic balance treatment of the rotor is the most important vibration elimination work on site.

At present, the dynamic balance technology of part of domestic generator manufacturers only stays in the traditional single-surface three-point weight test method stage, the method is mainly carried out by depending on the experience of workers, the starting times are more, the correction period is long, and therefore the waste of manpower, material resources and energy resources, the delay of the construction period and the like are caused.

To above-mentioned problem, utility model patent of publication No. CN201716154U discloses a turbine generator rotor dynamic balance test system for originally, should accomplish in the workshop in advance at the work of installing the scene completion, reduced the product and used the scene and appear because of vibration, noise scheduling problem that rotor balance caused. The outgoing quality of the rotor is improved.

However, the following problems still exist in the practical application of the patent: the lifting work of the rotor on the bearing seat needs to repeatedly rotate the bolt on the bearing seat to realize the dismounting of the rotor on the bearing seat, and the problems of complex operation and influence on the testing efficiency exist, so that a dynamic balance testing system for the rotor needs to be designed urgently.

SUMMERY OF THE UTILITY MODEL

The purpose of the utility model is to solve the shortcoming that exists among the prior art, if: the existing rotor dynamic balance test system has the problems that the rotor can be dismounted on the bearing seat by repeatedly rotating the bolt on the bearing seat, and the operation is complicated and the test efficiency is influenced.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a rotor dynamic balance test system comprises a test seat and a rotor, wherein two bearing seats are fixedly arranged at the top of the test seat, a plurality of sensors are arranged on each bearing seat, and one side of the top of the test seat is fixedly provided with a test motor, the driving end of the test motor is connected with one end of the rotor in a transmission way through a coupler, the bearing seat consists of a movable bearing and a fixed bearing, the fixed bearing is fixed at the top of the test seat, the movable bearing is connected above the fixed bearing in a sliding way, one side of the fixed bearing is fixedly provided with an electromagnet, a base block is fixedly arranged on one side of the electromagnet far away from the fixed bearing, a guide post is fixedly arranged on the top of the base block, one side of the movable bearing is fixedly provided with a silicon steel block, one side of the silicon steel block, which is far away from the movable bearing, is fixedly provided with a guide sleeve which is sleeved on the guide pillar in a sliding manner, and one side of the silicon steel block, which is opposite to the electromagnet, is concavely provided with a notch.

Preferably, the bottom of the movable bearing is symmetrically and concavely provided with two slots, the top of the fixed bearing is fixedly provided with a cutting, and the cutting is inserted in the slots in a sliding manner.

Preferably, a controller is fixedly mounted on one side of the test seat, and the controller is electrically connected with the two electromagnets.

Preferably, the slot is internally and symmetrically and fixedly provided with two guide bars, and the insertion bar is symmetrically provided with two sliding holes for slidably sleeving the guide bars in a penetrating manner.

Preferably, each guide pillar is in threaded sleeve connection with a limiting cap, and a threaded through hole for the guide pillar to be in threaded sleeve connection is formed in the limiting cap in a penetrating mode.

Preferably, a return spring is fixedly mounted at the top of the base block, and the guide sleeve is connected with the top end of the return spring.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model realizes the fixation of the tight state of the movable bearing and the fixed bearing by the cooperation of the silicon steel block and the electromagnet, ensures the smooth proceeding of the test process, and can limit the position of the silicon steel block by the limit cap, thereby ensuring the stable connection between the movable bearing and the fixed bearing;

2. the utility model discloses in, only need spacing cap of rotating to higher position, can make silicon steel piece go up the slip after the electro-magnet outage through reset spring, make the fixed bearing break away from with the movable bearing, can pull down the rotor from the bearing frame this moment, the dismouting process is simple and convenient.

Drawings

Fig. 1 is a schematic structural diagram of a dynamic balance testing system for a rotor according to the present invention;

fig. 2 is a cross-sectional view of a side surface of a bearing seat in the dynamic balance testing system for a rotor according to the present invention;

fig. 3 is a top view of a stop cap in the rotor dynamic balance testing system provided by the present invention;

fig. 4 is an enlarged view of a structure of fig. 1.

In the figure: the test device comprises a test seat 1, a test motor 2, a coupler 3, a rotor 4, a movable bearing 5, a fixed bearing 6, a sensor 7, a silicon steel block 8, an electromagnet 9, a controller 10, a guide pillar 11, a guide sleeve 12, a return spring 13, a base block 14, a limiting cap 15, a notch 16, a cutting strip 17, a threaded through hole 18, a guide strip 19 and a slot 20.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", 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 simplicity of description, and do not indicate or imply that the device or element being 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.

Referring to fig. 1-4, a rotor dynamic balance test system comprises a test base 1 and a rotor 4, two bearing seats are fixedly installed at the top of the test base 1, each bearing seat is provided with a plurality of sensors 7, a test motor 2 is fixedly installed at one side of the top of the test base 1, a drive end of the test motor 2 is in transmission connection with one end of the rotor 4 through a coupler 3, each bearing seat is composed of a movable bearing 5 and a fixed bearing 6, the fixed bearing 6 is fixed at the top of the test base 1, the movable bearing 5 is in sliding connection with the upper portion of the fixed bearing 6, an electromagnet 9 is fixedly installed at one side of the fixed bearing 6, a base block 14 is fixedly installed at one side of the electromagnet 9 far away from the fixed bearing 6, a guide pillar 11 is fixedly installed at the top of the base block 14, a silicon steel block 8 is fixedly installed at one side of the movable bearing 5, a guide sleeve 12 sleeved on the guide pillar 11, and one side of the silicon steel block 8 opposite to the electromagnet 9 is concavely provided with a notch 16.

It should be noted that, when it is needed to install, the power of the electromagnet 9 can be controlled to be cut off, at this time, the magnetic force between the electromagnet 9 and the silicon steel block 8 is lost, the movable bearing 5 can be slid upwards to enable the movable bearing 5 and the fixed bearing 6 to have a certain distance therebetween, at this time, the end parts of the two ends of the rotor are respectively inserted above the two fixed bearings 6, and the two movable bearings 5 are released to enable the movable bearing 5 to descend due to gravity until the movable bearing abuts against the fixed bearing 6, at this time, the silicon steel block 8 and the electromagnet 9 are sleeved on the end part of the rotor 4 through the notch 16 without influencing the free rotation of the rotor 4, the two electromagnets 9 are controlled to be electrified to enable the electromagnet 9 to adsorb and fix the silicon steel block 8, and the driving end of the testing motor 2 is connected with the rotor 4 through the coupling 3, at this time, the testing can be performed, the sliding process of the silicon steel block 8 can be, and controlling the two electromagnets 9 to be powered off, and at the moment, the two movable bearings 5 can be pulled upwards so as to detach the rotor 4 from the two bearing seats;

wherein, the bottom of the movable bearing 5 is symmetrically provided with two slots 20, the top of the fixed bearing 6 is fixedly provided with an inserting strip 17, and the inserting strip 17 is inserted in the slots 20 in a sliding way;

it should be noted that, during the sliding process, the movable bearing 5 will slide along the insert 17 through the slot 20, so as to guide the adjustment process of the movable bearing 5;

wherein, one side of the test seat 1 is fixedly provided with a controller 10, and the controller 10 is electrically connected with the two electromagnets 9;

it should be noted that the controller 10 can control the energization of the two electromagnets 9, and has the characteristic of convenient control;

two guide bars 19 are symmetrically and fixedly arranged in the slot 20, and two sliding holes for slidably sleeving the guide bars 19 are symmetrically formed in the inserting bar 17 in a penetrating manner;

it should be noted that, in the process of sliding the insert 17 in the slot 20, the guide effect of the two guide strips 19 is beneficial to improving the guide effect in the process of sliding the movable bearing 5 to the fixed bearing 6;

wherein, each guide post 11 is sleeved with a limit cap 15 through threads, and a threaded through hole 18 for sleeving the guide post 11 through threads is arranged on the limit cap 15 in a penetrating manner;

it should be noted that the position of the silicon steel block 8 can be limited by the limiting cap 15, and the limiting cap 15 can be rotated until abutting against the guide sleeve 12 when the fixed bearing 6 and the movable bearing 5 are tightly attached, so that the stable connection between the movable bearing 5 and the fixed bearing 6 is ensured;

wherein, the top of the base block 14 is fixedly provided with a return spring 13, and the guide sleeve 12 is connected with the top end of the return spring 13;

it should be noted that, after the electromagnet 9 is powered off, the silicon steel block 8 slides upwards through the return spring 13, so that the fixed bearing 6 is separated from the movable bearing 5, and at this time, the rotor 4 can be detached from the bearing seat, and the detachment process is simple and convenient.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The utility model provides a rotor dynamic balance test system, includes test seat (1) and rotor (4), the top fixed mounting of test seat (1) has two bearing framves, every all install a plurality of sensors (7) on the bearing frame, just one side fixed mounting at test seat (1) top has test motor (2), the drive end of test motor (2) passes through shaft coupling (3) and links to each other with the one end transmission of rotor (4), its characterized in that, the bearing frame comprises movable bearing (5) and fixed bearing (6), fixed bearing (6) are fixed at the top of test seat (1), just movable bearing (5) sliding connection is in the top of fixed bearing (6), one side fixed mounting of fixed bearing (6) has electro-magnet (9), one side fixed mounting that fixed bearing (6) were kept away from in electro-magnet (9) has base block (14), the top fixed mounting of base block (14) has guide pillar (11), one side fixed mounting of movable bearing (5) has silicon steel piece (8), one side fixed mounting that movable bearing (5) were kept away from in silicon steel piece (8) has guide pin bushing (12) that the slip cup jointed on guide pillar (11), just one side that silicon steel piece (8) and electro-magnet (9) are relative all concave is equipped with notch (16).

2. The rotor dynamic balance test system of claim 1, wherein the bottom of the dynamic bearing (5) is symmetrically provided with two slots (20) in a concave manner, the top of the fixed bearing (6) is fixedly provided with a slip (17), and the slip (17) is inserted into the slots (20) in a sliding manner.

3. The rotor dynamic balance test system according to claim 1, characterized in that a controller (10) is fixedly installed on one side of the test base (1), and the controller (10) is electrically connected with the two electromagnets (9).

4. The rotor dynamic balance test system of claim 2, characterized in that two guide bars (19) are symmetrically and fixedly installed in the slot (20), and two sliding holes for slidably sleeving the guide bars (19) are symmetrically formed in the inserting bar (17) in a penetrating manner.

5. The rotor dynamic balance test system of claim 1, characterized in that each guide post (11) is sleeved with a limit cap (15) in a threaded manner, and a threaded through hole (18) for being sleeved with the guide post (11) in a threaded manner is formed in the limit cap (15) in a penetrating manner.

6. The rotor dynamic balance test system of claim 1, characterized in that a return spring (13) is fixedly mounted on the top of the base block (14), and the guide sleeve (12) is connected with the top end of the return spring (13).