Rotor dynamic balance testing device

Abstract

The utility model discloses a rotor dynamic balance testing device, which relates to the field of testing devices and comprises a base, a support is fixedly arranged at the top end of the base, a fixing assembly used for fixing a rotor is arranged at the top end of the support, a motor is fixedly arranged at the top end of the base, and a driving cover is fixedly arranged at the top end of an output shaft of the motor. An electromagnet is fixedly arranged on the inner wall of the driving cover, a driving disc is arranged in the driving cover, and an iron protrusion is fixedly arranged at the outer end of the driving disc. The motor drives the electromagnet on the inner wall of the driving cover, the electromagnet drives the driving disc to rotate under the action of magnetic force, and the driving disc drives the fixing assembly and the rotor fixed on the fixing assembly through the connecting shaft. The vibration of the motor in the working process does not affect the driving disc or the rotor, so that the testing precision of the rotor is improved.

Description

Technical Field

[0001] The utility model relates to the field of testing devices, in particular to a rotor dynamic balance testing device. Background Art

[0002] In a broad sense, a rotor refers to the part of a mechanical device that can rotate. During the production and processing of the rotor, it is necessary to ensure that the mass of each part of the rotor is evenly distributed. Once the mass distribution is uneven, the dynamic balance of the rotor during rotation will be affected, thereby generating unnecessary vibrations.

[0003] Therefore, in the process of producing and processing rotors in the prior art, as well as repairing and testing rotors of mechanical equipment, it is necessary to test the dynamic balance of the rotors, such as the rotor dynamic balance test device disclosed in the prior art with publication number CN217765356U.

[0004] During the dynamic balancing test of the rotor, it is necessary to drive the rotor to rotate and detect its vibration during the rotation process. The existing technology often drives the tested rotor through a motor, but the motor itself will also vibrate during use. Therefore, the vibration of the motor will interfere with the rotor, thereby affecting the accuracy of the test. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model provides a rotor dynamic balancing test device, which drives the electromagnet on the inner wall of the drive cover through a motor, and the electromagnet drives the drive disk to rotate under the action of magnetic force, and the drive disk drives the fixed component and the rotor fixed on the fixed component through a connecting shaft. The vibration of the motor during operation will not affect the drive disk, let alone the rotor, thereby improving the test accuracy of the rotor and effectively solving the problems in the background technology.

[0006] To achieve the above object, the technical solution adopted by the utility model is: a rotor dynamic balancing test device, comprising a base, a bracket is fixedly provided on the top of the base, and a fixing component for fixing the rotor is provided on the top of the bracket;

[0007] A motor is fixedly provided at the top of the base, a driving cover is fixedly provided at the top of the output shaft of the motor, and an electromagnet is fixedly provided on the inner wall of the driving cover;

[0008] A driving disk is provided inside the driving cover, an iron protrusion is fixedly provided at the outer end of the driving disk, a counterweight is embedded at the top of the driving disk to help the driving disk maintain dynamic balance when rotating, the magnetic force of the electromagnet can absorb the iron protrusion, a connecting shaft is fixedly provided at the top of the driving disk, the top of the connecting shaft extends to the top of the bracket and is fixedly connected to the fixing component.

[0009] Furthermore, a controller is fixedly provided on the top of the base, a display screen is fixedly provided on the front side of the bracket, the motor, the display screen and the electromagnet are all arranged at the output end of the controller, and relevant detection data are displayed on the display screen.

[0010] Furthermore, the fixing assembly comprises a connecting ring fixedly arranged at the top end of the bracket, and a sleeve is arranged at the top end of the connecting ring through a sealing bearing sleeve;

[0011] An annular airbag is provided on the inner wall of the sleeve, and the rotor can be fixed inside the sleeve through the annular airbag. The interior of the annular airbag is communicated with the interior of the connecting ring. An air pressure sensor is provided inside the connecting ring. The air pressure sensor is arranged at the input end of the controller. The air pressure changes inside the connecting ring and the annular airbag can be sensed by the air pressure sensor.

[0012] Furthermore, a closing disk is provided at the bottom end of the bracket by bolts, the air pressure sensor is fixedly provided at the top end of the closing disk, and an air guide tube is fixedly provided at the bottom end of the closing disk, through which air can be input into the connecting ring.

[0013] Furthermore, the top end of the connecting shaft passes through the closing disk and is movably connected to the closing disk through a sealing bearing. A partition is fixedly provided on the top end of the connecting shaft, and the partition is fixed on the inner wall of the sleeve, so that the rotation of the connecting shaft can drive the partition and the sleeve to rotate.

[0014] Furthermore, the annular airbag is located on the top of the partition, and a plurality of connecting tubes are fixedly provided at the bottom of the annular airbag. The bottom ends of the connecting tubes penetrate the partition, so that the air inside the connecting ring can enter the annular airbag through the connecting tubes.

[0015] Compared with the prior art, the utility model provides a rotor dynamic balancing test device, which has the following beneficial effects:

[0016] The driving cover is driven to rotate by a motor, and drives the electromagnet on the inner wall of the driving cover. The electromagnet absorbs the iron protrusions under the action of magnetic force and drives the driving disk to rotate. The driving disk drives the fixed component and the rotor fixed on the fixed component through the connecting shaft to perform a dynamic balance test. Since the driving disk is not in direct contact with the driving cover, the vibration of the motor during operation will not affect the driving disk, let alone the rotor, thereby improving the test accuracy of the rotor. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is the overall structure diagram of the utility model;

[0018] Figure 2 This is the internal structure diagram of the fixed component of the utility model;

[0019] Figure 3 It is a cross-sectional view of the bracket of the utility model;

[0020] Figure 4 This is an exploded view of the drive disc and drive cover of the utility model;

[0021] Figure 5 This is a system diagram of the utility model.

[0022] In the figure: 1. base; 2. controller; 3. motor; 4. display screen; 5. drive cover; 6. fixing assembly; 601. sleeve; 602. annular airbag; 603. partition; 604. connecting pipe; 605. connecting ring; 7. bracket; 8. electromagnet; 9. drive disk; 10. iron protrusion; 11. connecting shaft; 12. closing disk; 13. air pressure sensor; 14. air guide tube. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention will be further described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] like Figure 1-5 As shown, the utility model provides a rotor dynamic balancing test device, comprising a base 1, a bracket 7 is fixedly provided on the top of the base 1, and a fixing component 6 for fixing the rotor is provided on the top of the bracket 7;

[0025] A motor 3 is fixedly disposed on the top of the base 1, a driving cover 5 is fixedly disposed on the top of the output shaft of the motor 3, and an electromagnet 8 is fixedly disposed on the inner wall of the driving cover 5;

[0026] A driving disk 9 is provided inside the driving cover 5, and an iron protrusion 10 is fixedly provided at the outer end of the driving disk 9. A counterweight block is embedded at the top of the driving disk 9 to adjust the mass distribution of the driving disk 9. Even if the iron protrusion 10 is fixed, the whole formed by the driving disk 9 and the iron protrusion 10 can maintain dynamic balance during rotation. The magnetic force of the electromagnet 8 can absorb the iron protrusion 10. A connecting shaft 11 is fixedly provided at the top of the driving disk 9. The top of the connecting shaft 11 extends to the top of the bracket 7 and is fixedly connected to the fixing component 6.

[0027] During the test, the rotor to be tested is fixed on the fixing assembly 6, and then the motor 3 is turned on. The driving cover 5 is driven to rotate by the motor 3, and the electromagnet 8 fixed on the inner wall of the driving cover 5 rotates under the drive of the driving cover 5, and the driving disk 9 is located inside the driving cover 5. The iron protrusion 10 at the outer end of the driving disk 9 will be driven and move with the electromagnet 8 after being attracted by the magnetic force of the electromagnet 8, thereby driving the driving disk 9 and the connecting shaft 11 to rotate. The driving disk 9 rotates and drives the connecting shaft 11 and the fixing assembly 6 to rotate, thereby driving the rotor and performing a dynamic balancing test of the rotor. In this way, since the driving disk 9 is not in direct contact with the driving cover 5, the vibration of the motor 3 during operation will not affect the driving disk 9, let alone the rotor, thereby improving the test accuracy of the rotor.

[0028] In order to determine the dynamic balance of the rotor, Figure 1 , 2 As shown in , 3 and 5, a controller 2 is fixedly provided on the top of the base 1, a display screen 4 is fixedly provided on the front side of the bracket 7, the motor 3, the display screen 4 and the electromagnet 8 are all arranged at the output end of the controller 2, and the relevant detection data are displayed on the display screen 4.

[0029] The fixing assembly 6 comprises a connecting ring 605 fixedly arranged at the top of the bracket 7, and a sleeve 601 is arranged at the top of the connecting ring 605 through a sealing bearing sleeve;

[0030] An annular airbag 602 is provided on the inner wall of the sleeve 601, and the rotor can be fixed inside the sleeve 601 through the annular airbag 602. The interior of the annular airbag 602 is connected to the interior of the connecting ring 605. An air pressure sensor 13 is provided inside the connecting ring 605. The air pressure sensor 13 is arranged at the input end of the controller 2. The air pressure changes inside the connecting ring 605 and the annular airbag 602 can be sensed through the air pressure sensor 13.

[0031] The rotor to be tested is placed inside the sleeve 601, and then the annular airbag 602 is inflated. After it expands, the rotor is clamped and fixed inside the sleeve 601. When the fixing assembly 6 is driven to rotate as a whole, the rotor rotates with it. If there is a problem with the dynamic balance of the rotor and causes vibration, the vibration will affect the annular airbag 602, causing the air pressure inside the annular airbag 602 to change, and the more severe the vibration, the greater the amplitude of the air pressure change. The annular airbag 602 is connected to the inside of the connecting ring 605, so the air pressure inside the connecting ring 605 will also change, and the air pressure sensor 13 can sense this air pressure change, and convert the air pressure change into data and display it on the display screen 4. The dynamic balance of the rotor can be intuitively judged through the data on the display screen 4.

[0032] The sleeve 601 can be driven by the rotation of the connecting shaft 11. Figure 2 ,3 As shown in FIG. 5 , a closing plate 12 is provided at the bottom end of the bracket 7 by bolts, the air pressure sensor 13 is fixedly provided at the top of the closing plate 12, and an air guide tube 14 is fixedly provided at the bottom end of the closing plate 12, through which air can be input into the connecting ring 605.

[0033] The top end of the connecting shaft 11 passes through the closing disk 12 and is movably connected to the closing disk 12 via a sealed bearing. A partition 603 is fixedly provided on the top end of the connecting shaft 11, and the partition 603 is fixedly provided on the inner wall of the sleeve 601. Therefore, the rotation of the connecting shaft 11 can drive the partition 603 and the sleeve 601 to rotate.

[0034] The annular airbag 602 is located on the top of the partition 603 , and a plurality of connecting tubes 604 are fixedly provided at the bottom of the annular airbag 602 . The bottom ends of the connecting tubes 604 penetrate the partition 603 , so that the air inside the connecting ring 605 can enter the annular airbag 602 through the connecting tubes 604 .

[0035] When fixing the rotor to be tested, the air is input into the connecting ring 605 through the air guide tube 14 through the closing disk 12, and the air entering the connecting ring 605 enters the annular airbag 602 through the connecting tube 604. The connecting tube 604 connects the annular airbag 602 and the connecting ring 605. Since the top end of the connecting shaft 11 is fixedly connected to the partition 603, the connecting shaft 11 can drive the partition 603 to rotate, and then drive the sleeve 601 to rotate.

[0036] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. The technicians in this industry should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A rotor dynamic balancing test device, comprising a base (1), a bracket (7) being fixedly provided on the top of the base (1), characterized in that: The top end of the bracket (7) is provided with a fixing assembly (6) for fixing the rotor; A motor (3) is fixedly provided at the top of the base (1), a drive cover (5) is fixedly provided at the top of the output shaft of the motor (3), and an electromagnet (8) is fixedly provided on the inner wall of the drive cover (5); A driving disc (9) is provided inside the driving cover (5), an iron protrusion (10) is fixedly provided at the outer end of the driving disc (9), a connecting shaft (11) is fixedly provided at the top end of the driving disc (9), and the top end of the connecting shaft (11) extends to the top of the bracket (7) and is fixedly connected to the fixing assembly (6).

2. The rotor dynamic balancing test device according to claim 1, characterized in that: A counterweight is embedded at the top of the driving disk (9), a controller (2) is fixedly provided at the top of the base (1), a display screen (4) is fixedly provided at the front side of the bracket (7), and the motor (3), display screen (4) and electromagnet (8) are all arranged at the output end of the controller (2).

3. The rotor dynamic balancing test device according to claim 2, characterized in that: The fixing assembly (6) comprises a connecting ring (605) fixedly arranged at the top end of the bracket (7), and a sleeve (601) is arranged at the top end of the connecting ring (605) via a sealing bearing sleeve; An annular airbag (602) is provided on the inner wall of the sleeve (601), the interior of the annular airbag (602) is communicated with the interior of the connecting ring (605), an air pressure sensor (13) is provided inside the connecting ring (605), and the air pressure sensor (13) is arranged at the input end of the controller (2).

4. The rotor dynamic balancing test device according to claim 3, characterized in that: The bottom end of the bracket (7) is provided with a closing plate (12) by means of bolts, the air pressure sensor (13) is fixedly arranged on the top end of the closing plate (12), and the bottom end of the closing plate (12) is fixedly provided with an air guide tube (14).

5. The rotor dynamic balancing test device according to claim 4, characterized in that: The top end of the connecting shaft (11) passes through the closing disk (12) and is movably connected to the closing disk (12) via a sealing bearing. A partition plate (603) is fixedly provided on the top end of the connecting shaft (11), and the partition plate (603) is fixedly provided on the inner wall of the sleeve (601).

6. The rotor dynamic balancing test device according to claim 5, characterized in that: The annular airbag (602) is located on the top of the partition (603), and a plurality of connecting tubes (604) are fixedly provided at the bottom end of the annular airbag (602), and the bottom ends of the connecting tubes (604) penetrate the partition (603).

Images