Balance calibration device for fan rotor

Abstract

The utility model discloses a fan rotor balance calibration device, belongs to the field of fan auxiliary equipment, and solves the problems that the fan rotor shakes during rotation due to the radial clearance of a bearing, and the balance performance is influenced. The device comprises a hollow pedestal, a bearing is arranged in the hollow pedestal, a plurality of adjusting grooves are evenly formed in the side wall of the hollow pedestal along the circumference, adjusting bolts capable of freely moving are installed in the adjusting grooves in a penetrating mode, the bottoms of the adjusting bolts are connected with one ends of arc-shaped elastic pieces, and the other ends of the arc-shaped elastic pieces abut against the inner wall of the hollow pedestal. The outer wall of the arc-shaped elastic piece abuts against the bearing. The fan rotor balancing device is stable in operation, safe and reliable, enables the fan rotor to effectively keep balance during movement, improves the balancing performance of the fan rotor, and has extremely high generalization performance.

Description

Technical Field

[0001] This utility model belongs to the field of fan auxiliary equipment, specifically relating to a fan rotor balancing calibration device. Background Technology

[0002] A fan is a machine that uses input mechanical energy to increase gas pressure and discharge gas; it is a type of driven fluid machinery. In China, "fan" is a common abbreviation for gas compression and gas transportation machinery. Commonly used fans include ventilators, blowers, and wind turbines. Fans are widely used in factories, mines, tunnels, cooling towers, vehicles, ships, and buildings for ventilation, dust removal, and cooling; in boilers and industrial furnaces for ventilation and induced draft; in air conditioning equipment and household appliances for cooling and ventilation; in grain drying and conveying; as a wind source for wind tunnels; and for inflating and propelling hovercraft.

[0003] Currently, when a fan is in use, it mainly relies on its internal rotor to drive the fan blades to generate airflow. Because the fan rotor rotates at high speed during operation, bearings are needed to connect it to reduce mechanical friction between the rotor and the contact surface. However, there is radial clearance between the outer and inner rings of the bearing, which can easily cause slight wobbling during rotation, thus affecting the balance performance of the fan rotor and causing increased wear on the fan. Utility Model Content

[0004] This invention provides a fan rotor balancing calibration device to solve the problem of fan rotor shaking during rotation caused by radial clearance of bearings, which affects the balance performance.

[0005] The technical solution of this utility model is: a fan rotor balancing calibration device, including a hollow platform, a bearing is provided inside the hollow platform, a plurality of adjusting grooves are evenly provided along the circumference of the side wall of the hollow platform, and an adjusting bolt that can move freely is installed through the adjusting groove. The bottom of the adjusting bolt is connected to one end of an arc-shaped elastic sheet, the other end of the arc-shaped elastic sheet abuts against the inner wall of the hollow platform, and the outer wall of the arc-shaped elastic sheet abuts against the bearing.

[0006] As a further improvement of this utility model, the inner ring of the bearing is provided with an extension sleeve, the outer wall of the extension sleeve is provided with an arc-shaped groove, and the outer wall of the arc-shaped elastic sheet abuts against the arc-shaped groove.

[0007] As a further improvement of this utility model, a scale strip is provided on the side of the head of the adjusting bolt to achieve precise adjustment of the adjusting bolt. A reference plate is provided on the adjusting groove, and the reference plate corresponds to the scale plate. Precise adjustment of the adjusting bolt can be achieved through the reference plate.

[0008] The beneficial effects of this invention are as follows: This invention provides support to the inner ring of the bearing and the outer hollow base through multiple arc-shaped elastic plates. The elastic force of the arc-shaped elastic plates constrains the inner ring of the bearing. When the fan rotor rotates at high speed, the constraint force of the arc-shaped elastic plates stabilizes their rotation. This invention also allows for precise adjustment of the arc-shaped elastic plates via adjusting bolts and their graduated strips, thereby changing the constraint force on the inner ring of the bearing at different positions. This allows the invention to meet the operating conditions of the fan at different angles, preventing radial force imbalance between the outer and inner rings of the bearing, which can lead to large fluctuations in radial clearance and damage to the movement and contact surface smoothness between the raceways and rollers. This invention is stable and reliable in operation, effectively maintaining the balance of the fan rotor during movement, improving the balance performance of the fan rotor, and has strong applicability. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of the structure of this utility model;

[0010] Figure 2 This is a side sectional view of the present invention;

[0011] Figure 3 This is a partially enlarged view of the present invention.

[0012] In the diagram: 1. Hollow base; 4. Inner ring of bearing; 7. Adjusting groove; 8. Bearing; 9. Extension sleeve; 10. Arc groove; 11. Adjusting bolt; 12. Arc elastic plate; 13. Reference plate; 14. Scale bar. Detailed Implementation

[0013] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0014] like Figure 1-3 As shown, a fan rotor balancing calibration device includes a hollow base 1, a bearing 8 inside the hollow base 1, and a plurality of adjusting grooves 7 evenly arranged along the circumference of the side wall of the hollow base 1. Adjusting bolts 11 that can move freely are installed through the adjusting grooves 7. The bottom of the adjusting bolts 11 is connected to one end of an arc-shaped elastic plate 12, the other end of the arc-shaped elastic plate 12 abuts against the inner wall of the hollow base 1, and the outer wall of the arc-shaped elastic plate 12 abuts against the bearing 8.

[0015] The inner ring 4 of the bearing 8 is provided with an extension sleeve 9, and the outer wall of the extension sleeve 9 is provided with an arc groove 10. The outer wall of the arc elastic piece 12 abuts against the arc groove 10.

[0016] The outer surface of the adjusting bolt 11 is provided with a scale strip 14, and the adjusting groove 7 is provided with a reference plate 13. The reference plate 13 corresponds to the scale plate 14, and the adjusting bolt 11 can be precisely adjusted through the reference plate 13.

[0017] When the fan rotor rotates at high speed, the arc surface of the arc-shaped elastic plate 12 extends into the interior of the arc-shaped groove 10. By rotating the adjusting bolt 11, the position of one end of the arc-shaped elastic plate 12 can be changed, thereby changing the pressing force of the arc surface of the arc-shaped elastic plate 12 into the interior of the arc-shaped groove 10, thus constraining the inner ring 4 of the bearing. At the same time, when checking the dynamic balance of the fan rotor, the pressing force of the adjusting bolt 11 on the arc-shaped elastic plate 12 can be changed at different positions, thereby changing the pressing force of the arc surface of the arc-shaped elastic plate 12 into the interior of the arc-shaped groove 10, and thus changing the constraint force on the inner ring 4 of the bearing at different positions. The constraint force of the arc surface of the arc-shaped elastic plate 12 makes the rotation of the bearing 8 tend to be stable, so that it can meet the use conditions of the fan at different angles, and avoid the radial force imbalance between the outer ring 3 and the inner ring 4 of the bearing, which would cause large fluctuations in its radial clearance and damage the movement and contact surface smoothness between the raceway 5 and the roller 6.

Claims

1. A fan rotor balancing calibration device comprising a hollow pedestal (1) in which a bearing (8) is arranged, characterised in that: The hollow platform (1) has multiple adjusting grooves (7) evenly arranged along the circumference on its side wall. Adjusting bolts (11) that can move freely are installed through the adjusting grooves (7). The bottom of the adjusting bolts (11) is connected to one end of the arc-shaped elastic sheet (12). The other end of the arc-shaped elastic sheet (12) abuts against the inner wall of the hollow platform (1). The outer wall of the arc-shaped elastic sheet (12) abuts against the bearing (8).

2. A fan rotor balancing and alignment device according to claim 1, wherein: The bearing (8) has an extension sleeve (9) on its inner ring (4), and the outer wall of the extension sleeve (9) has an arc groove (10). The outer wall of the arc elastic sheet (12) abuts against the arc groove (10).

3. A fan rotor balancing and alignment device according to claim 1 or 2, characterised in that: The adjusting bolt (11) has a scale strip (14) on the side of its head, and a reference plate (13) is provided on the adjusting groove (7), with the reference plate (13) corresponding to the scale strip (14).

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