Device for reinforcing rigidity and reducing vibration of high-speed motor

Abstract

The utility model provides a device for reinforcing rigidity and reducing vibration of a high-speed motor, which comprises angle steel, the left and right ends of the angle steel are welded with strip-shaped bottom plates on the left and right sides of a base bottom plate in the horizontal direction, the bottom of the angle steel is welded with the base bottom plate, and the front of the angle steel is welded with a base end plate. One end of the angle steel reinforcing rib is welded on the angle steel, the other end of the angle steel reinforcing rib is welded with a bearing mounting spigot circle of the engine base end plate, a high-speed motor rotor is mounted on the bearing seat through a bearing, and the middle part of the angle steel reinforcing rib is welded with the inner side of the engine base end plate; and the other side is welded with the base side plate. Motor rigidity can be enhanced and vibration can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of motor manufacturing technology, specifically a device for strengthening the rigidity and reducing vibration of high-speed motors. Background Technology

[0002] In general, the frame of a high-speed motor (2-pole or 4-pole motor or high-speed variable frequency motor) is fitted with the bearing housing via an end cover. To enhance rigidity, the end cover is made of thick steel plate. However, due to size limitations, the end plate of the frame cannot be reinforced further, and there are two mating points: the frame and the end cover, and the end cover and the bearing housing, resulting in cumulative errors. Since motor assembly involves multiple lifting, assembly, and transportation processes, insufficient rigidity of the end cover and frame will lead to deformation of the frame's stop and mounting feet. During motor operation, vibrations caused by rotor eccentricity and electromagnetic forces will be transmitted to the frame, and insufficient rigidity will fail to effectively suppress these vibrations.

[0003] It is evident that the existing high-speed motor structure has two mating points: the outer circle of the end cover and the frame, and the inner circle of the end cover and the bearing housing. The cumulative error is large, resulting in misalignment. Furthermore, the end plate of the frame has no space to strengthen its rigidity, making it unable to effectively suppress vibration. Summary of the Invention

[0004] This invention provides a device for strengthening the rigidity and reducing vibration of a high-speed motor, thereby addressing the technical deficiencies of the prior art.

[0005] To solve the above-mentioned technical problems, the present invention provides a device for strengthening the rigidity and reducing vibration of a high-speed motor. The device includes an angle steel, with its left and right ends horizontally welded to the elongated base plates on the left and right sides of the base plate, its bottom welded to the base plate, and its front welded to the end plate of the base plate. It also includes an angle steel reinforcing rib, one end of which is welded to the angle steel, and the other end welded to the bearing mounting stop circle of the end plate of the base plate. The high-speed motor rotor is mounted on a bearing seat via a bearing. The middle portion of the angle steel reinforcing rib is welded to the inner side of the end plate of the base plate. The device also includes an arc-shaped plate, one side of which is welded to the end plate of the base plate at its right angle, and the other side welded to the side plate of the base plate.

[0006] Specifically, the outer diameter of the high-speed motor rotor is smaller than the diameter of the bearing housing, and the bearing housing directly mates with the machine base.

[0007] Specifically, the outer diameter of the high-speed motor rotor is larger than the diameter of the bearing housing. An end cover is added between the machine base and the bearing housing. The outer circle of the end cover is smaller than the inner circle of the machine base end plate. An end cover reinforcing rib is provided to connect the outer circle of the end cover and the inner circle of the machine base end plate.

[0008] Specifically, the angle steel is 50*5 angle steel Q235-B.

[0009] Specifically, there are two angle steels in total, one at the front and one at the back.

[0010] Specifically, the angle steel reinforcing rib is made of 16*25 flat steel Q235-B.

[0011] Specifically, two angle steel reinforcing ribs are welded to the center of the angle steel at one end, and one angle steel reinforcing rib is welded to the left and right ends of the angle steel at one end. There is a bent plate reinforcing rib connecting the bent plate on the long strip base plate on the left and right sides to the bearing mounting stop circle of the machine base end plate.

[0012] Specifically, the curved plate is made of 25 steel plate Q235-B, with two plates on the left and right sides of one end of the machine base, and four plates in total, front and back.

[0013] Specifically, the radius of the arc shape of the arc plate is the same as the width of the air inlet.

[0014] Specifically, the upper half of the machine base end plate has a small inner circle, and a bearing cover plate is provided to fit with the small inner circle of the upper half of the machine base end plate.

[0015] Due to the inclusion of angle steel, angle steel reinforcing ribs, end cap reinforcing ribs, and arc-shaped plates, this utility model offers the following advantages:

[0016] 1. By eliminating the end cover, this utility model reduces the gap of at least 5 microns between the end cover and the base, as well as the resulting eccentricity, thus lowering the vibration value caused by rotor eccentricity. The base is reinforced with angle steel, angle steel reinforcing ribs, and arc plates, which increases its rigidity and prevents deformation of the base during hoisting, assembly, and transportation in the motor production process. At the same time, as the most important structural component, it reduces the vibration value caused by rotor and electromagnetic force.

[0017] 2. The end caps are retained, but the end caps are reinforced with additional reinforcing ribs, and the corresponding parts of the machine base are reinforced with angle steel, angle steel reinforcing ribs, and arc plates. This is still effective in preventing deformation during hoisting, assembly, and operation, and the vibration suppression effect is obvious. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings of the embodiments will be briefly described below. Obviously, the drawings described below only relate to some embodiments of this application, and are not intended to limit this application.

[0019] Figure 1 This is a front view of a device for strengthening the rigidity and reducing vibration of a high-speed motor according to the present invention.

[0020] Figure 2 This is a top view of a device for strengthening the rigidity and reducing vibration of a high-speed motor according to the present invention.

[0021] Figure 3 This is a front view of the end cap in an embodiment of the device for reinforcing the rigidity and reducing vibration of a high-speed motor according to the present invention.

[0022] Figure 4 This is a top view of the end cap in an embodiment of the device for reinforcing the rigidity and reducing vibration of a high-speed motor according to the present invention.

[0023] Among them, 1. curved plate, 2. angle steel, 3. angle steel reinforcing rib, 4. end cap reinforcing rib. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the described embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0025] Unless otherwise defined, the technical or scientific terms used herein shall have the ordinary meaning as understood by a person of ordinary skill in the art to which this application pertains.

[0026] Please see Figure 1 and Figure 2 This utility model provides a device for strengthening the rigidity and reducing vibration of a high-speed motor. It includes an angle steel 2, with its left and right ends horizontally welded to the elongated base plates on the left and right sides of the base plate, its bottom welded to the base plate, and its front welded to the end plate of the base plate. It also includes an angle steel reinforcing rib 3, one end of which is welded to the angle steel 2, and the other end welded to the bearing mounting stop circle of the end plate of the base plate. The high-speed motor rotor is mounted on a bearing seat via a bearing. The middle portion of the angle steel reinforcing rib 3 is welded to the inner side of the end plate of the base plate. Finally, it includes an arc-shaped plate 1, one side of which is welded to the end plate of the base plate at a right angle, and the other side welded to the side plate of the base plate. Angle steel 2, matched to the size of the motor base, is the most basic component. Its function is to connect and fix the left and right long base plates, the base base plate, and the base end plate into a whole, effectively reducing deformation of the motor base. It also serves as the base and support point for the angle steel reinforcing rib 3. The angle steel reinforcing rib 3 mainly thickens the base end plate and connects with angle steel 2 and other components of the motor base to enhance rigidity. The right angle of the arc plate 1 is welded to the base end plate on one side and to the base side plate on the other side, forming a locally strong connection, providing effective support and greatly enhancing rigidity. The above three reinforcing components are selected according to the size of the motor base, and the detailed data in the examples are not limited. The rigidity of the motor base is significantly improved, the components and assembly are simplified, and more importantly, the vibration of the high-speed motor is effectively reduced.

[0027] Specifically, the outer diameter of the high-speed motor rotor is smaller than the diameter of the bearing housing. The bearing housing directly mates with the machine base. The outer ring of the end cover mates with the inner ring of the machine base end plate, and the inner ring of the end cover mates with the bearing housing. The end cover serves as a transition but is detrimental to vibration. By eliminating the end cover, the gap of at least 5 microns between the end cover and the machine base, and between the end cover and the bearing housing, as well as the resulting eccentricity, are reduced, thereby lowering the vibration value caused by rotor eccentricity.

[0028] like Figure 3 , Figure 4 As shown, specifically, the outer diameter of the high-speed motor rotor is larger than the diameter of the bearing housing. An end cover is added between the base and the bearing housing. The outer circle of the end cover is smaller than the inner circle of the base end plate. An end cover reinforcing rib 4 is provided between the outer circle of the end cover and the inner circle of the base end plate. Although the end cover is retained, the diameter of the end cover is smaller than that of a conventional end cover. The end cover reinforcing rib 4 is connected between the outer circle of the end cover and the inner circle of the base end plate. In addition to maintaining the connection between the end cover and the base, a channel is also reserved for the entry and exit of the angle steel reinforcing rib 3. The angle steel 2 and the arc plate 1 are implemented according to the above scheme according to the corresponding dimensions.

[0029] Specifically, the angle steel 2 is 50*5 angle steel Q235-B. This type of steel has good toughness and can absorb energy and deform to a certain extent without breaking when subjected to impact or vibration, thus improving the structure's earthquake resistance and wind resistance.

[0030] Specifically, there are two angle steels 2 in total, which further optimizes rigidity and reduces vibration.

[0031] Specifically, the angle steel reinforcing rib 3 is made of 16*25 flat steel Q235-B. Q235-B steel has high yield strength and tensile strength, and the cross-sectional shape of 16*25 flat steel can better disperse stress when subjected to pressure and tension.

[0032] Specifically, two of the angle steel reinforcing ribs 3 are welded at one end to the center of the angle steel 2, and one of the angle steel reinforcing ribs 3 is welded at one end to the left and right ends of the angle steel 2. There is one bent plate reinforcing rib between the bent plate on the long strip base plate on the left and right sides and the bearing mounting stop circle on the machine base end plate. By selecting the position, angle and quantity, a balance is achieved between rigidity and cost. At the same time, the space between the bent plate and the bearing mounting stop circle is further utilized to set the reinforcing ribs.

[0033] Specifically, the arc-shaped plate 1 is made of Q235-B 25 steel plate. There are two plates on the left and right sides of one end of the machine base, and four plates in total, front and back. The 25 steel plate is relatively thin, with a regular shape. The steel plate produced by hot rolling process has high dimensional accuracy, a smooth surface, and is easy to form. Furthermore, Q235-B steel has good plasticity and is suitable for various cold and hot working operations, such as cutting, bending, drilling, and stamping, which can meet the requirements of component shape and size in different engineering scenarios.

[0034] Specifically, the radius of the arc 1 of the arc plate is the same as the width of the air inlet, which reduces the impact on ventilation while effectively supporting and strengthening rigidity.

[0035] Specifically, the upper half of the machine base end plate has a small inner circle. A bearing cover plate is provided to fit with the small inner circle of the upper half of the machine base end plate. After the end cover is removed, but a window for maintenance needs to be reserved, the upper half of the machine base end plate still has a smaller inner circle. At this time, a cover plate is needed for sealing. The cover plate plays a role in sealing and sound insulation.

[0036] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present utility model and are not intended to limit the present utility model. Any changes or modifications to the above embodiments within the scope of the essential spirit of the present utility model will fall within the scope of the claims of the present utility model.

Claims

1. A device for strengthening the rigidity and reducing vibration of a high-speed motor, characterized in that... The system includes angle steel (2), the left and right ends of which are horizontally welded to the long strip base plates on the left and right sides of the base plate, the bottom of which is welded to the base plate, and the front of which is welded to the end plate of the base. It also includes angle steel reinforcing ribs (3), one end of which is welded to the angle steel (2), and the other end is welded to the bearing mounting stop circle of the end plate of the base. The high-speed motor rotor is mounted on the bearing seat through the bearing. The middle part of the angle steel reinforcing ribs (3) is welded to the inner side of the end plate of the base. It also includes an arc plate (1), one side of which is welded to the end plate of the base, and the other side of which is welded to the side plate of the base.

2. The device for strengthening the rigidity and reducing vibration of a high-speed motor according to claim 1, characterized in that... The outer diameter of the high-speed motor rotor is smaller than the diameter of the bearing housing, and the bearing housing directly mates with the machine base.

3. The device for strengthening the rigidity and reducing vibration of a high-speed motor according to claim 1, characterized in that... The outer diameter of the high-speed motor rotor is larger than the diameter of the bearing seat. An end cover is added between the machine base and the bearing seat. The outer circle of the end cover is smaller than the inner circle of the machine base end plate. An end cover reinforcing rib (4) is provided between the outer circle of the end cover and the inner circle of the machine base end plate.

4. The device for strengthening the rigidity and reducing vibration of a high-speed motor according to claim 1, characterized in that... The angle steel (2) is 50*5 angle steel Q235-B.

5. The device for strengthening the rigidity and reducing vibration of a high-speed motor according to claim 1, characterized in that... There are two angle steels (2) in total, one at the front and one at the back.

6. The device for strengthening the rigidity and reducing vibration of a high-speed motor according to claim 1, characterized in that... The angle steel reinforcing bar (3) is made of 16*25 flat steel Q235-B.

7. The device for strengthening the rigidity and reducing vibration of a high-speed motor according to claim 1, characterized in that... Two of the angle steel reinforcing ribs (3) are welded at one end to the center of the angle steel (2). One of the angle steel reinforcing ribs (3) is welded at one end to the left and right ends of the angle steel (2). There is a bent plate reinforcing rib connecting the bent plate on the long strip base plate on the left and right sides with the bearing mounting stop circle of the machine base end plate.

8. The device for strengthening the rigidity and reducing vibration of a high-speed motor according to claim 1, characterized in that... The arc-shaped plate (1) is made of 25 steel plate Q235-B, with two plates on the left and right sides of one end of the machine base, and four plates in total at the front and back.

9. The device for strengthening the rigidity and reducing vibration of a high-speed motor according to any one of claims 1 to 8, characterized in that... The radius of the arc (1) of the arc plate is the same as the width of the air inlet.

10. A device for strengthening the rigidity and reducing vibration of a high-speed motor according to claim 2, characterized in that... The upper half of the machine base end plate has a small inner circle, and a bearing cover plate is provided to fit with the small inner circle of the upper half of the machine base end plate.

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