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

Abstract

The invention 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 surface 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] The present invention relates to the technical field of motor manufacturing, in particular to a device for enhancing the rigidity and reducing the vibration of a high-speed motor. Background Art

[0002] The base of a typical high-speed motor (two-pole, four-pole, or high-speed variable-frequency motor) is mated to the bearing housing via an end cap. To enhance rigidity, the end cap is constructed of thick steel. However, due to size limitations, the base end plates cannot be reinforced. Furthermore, there are two key points of fit: the base, the end cap, and the end cap, and the bearing housing. This results in cumulative errors. Because motor assembly requires multiple lifting, assembly, and transportation steps, insufficient rigidity in the end cap and base can lead to deformation of the base stop and anchors. During motor operation, vibrations caused by rotor eccentricity and electromagnetic forces are transmitted to the base, and insufficient rigidity prevents effective vibration suppression.

[0003] It can be seen from this that the existing high-speed motor structure has two problems: the outer circle of the end cover and the machine base, and the inner circle of the end cover and the bearing seat. The cumulative error is large, resulting in non-concentricity. The end plate of the machine base has no space to strengthen the rigidity, and it cannot effectively suppress vibration. Summary of the Invention

[0004] The present invention provides a device for enhancing the rigidity and reducing the vibration of a high-speed motor, so as to solve the technical defects of the above-mentioned prior art.

[0005] In order to solve the above technical problems, the technical solution of the present invention is a device for strengthening the rigidity and reducing vibration of high-speed motors, including angle steel, the left and right ends of the angle steel are horizontally welded to the long strip bottom plates on the left and right sides of the machine base bottom plate, the bottom is welded to the machine base bottom plate, and the front is welded to the machine base end plate, and also includes angle steel reinforcement ribs, one end of the angle steel reinforcement ribs is welded to the angle steel, and the other end is welded to the bearing mounting stop circle of the machine base end plate, the high-speed motor rotor is installed on the bearing seat through the bearing, the middle part of the angle steel reinforcement ribs is welded to the inner side of the machine base end plate, and also includes an arc plate, one side of the arc plate at a right angle is welded to the machine base end plate, and the other side is welded to the machine base side plate.

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

[0007] Specifically, the outer diameter of the high-speed motor rotor is larger than the diameter of the bearing seat, and 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, and an end cover reinforcement rib is provided between 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 in front and one in the back.

[0010] Specifically, the angle steel reinforcement ribs are made of 16*25 flat steel Q235-B.

[0011] Specifically, there are two angle steel reinforcement ribs with one end welded in the middle of the angle steel, and one angle steel reinforcement rib is welded at one end on the left and right ends of the angle steel respectively. There is a bent plate reinforcement rib connecting the bent plates on the long bottom plates on the left and right sides and the bearing mounting stop circle of the machine base end plate.

[0012] Specifically, the arc-shaped plate is made of 25 steel plate Q235-B, with 2 pieces on the left and right sides of one end of the machine base and 4 pieces on the front and back.

[0013] Specifically, the radius of the arc of the arc plate adopts the width of the air inlet.

[0014] Specifically, the upper part of the machine base end plate has an inner circle with a smaller radius, and a bearing upper cover plate is provided to cooperate with the inner circle with a smaller radius of the upper part of the machine base end plate.

[0015] Due to the arrangement of the angle steel, the angle steel reinforcement ribs, the end cover reinforcement ribs and the arc-shaped plate, the present invention has the following beneficial effects:

[0016] 1. By eliminating the end caps, the present invention reduces the gap of at least 5 wires between the end caps and the base, as well as the resulting eccentricity, thereby reducing the vibration caused by rotor eccentricity. The base is reinforced with angle steel, angle steel reinforcement ribs, and curved plates, which improves rigidity and avoids deformation during the motor production process, such as lifting, assembly, and transportation. At the same time, as the most important structural component, it reduces the vibration caused by the rotor and electromagnetic force.

[0017] 2. The end cover is retained, but the end cover reinforcement structure is added and the corresponding parts of the machine base are still reinforced with angle steel, angle steel reinforcement and curved plates. This is still effective in preventing deformation during lifting, installation and operation, and has a significant effect in suppressing vibration; BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings described below only relate to some embodiments of the present application, and are not limitations to the present application.

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

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

[0021] Figure 3 The front view of the end cap of the embodiment of the device for strengthening the rigidity and reducing the vibration of a high-speed motor according to the present invention

[0022] Figure 4 A top view of the end cap in an embodiment of a device for enhancing 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 reinforcement, 4. end cover reinforcement DETAILED DESCRIPTION

[0024] To make the purpose, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions of the embodiments of the present application will be clearly and completely described below in conjunction with the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the described embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

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

[0026] See also Figure 1 and Figure 2 The technical solution of the present invention is a device for strengthening the rigidity and reducing vibration of high-speed motors, including angle steel 2, the left and right ends of the angle steel 2 are horizontally welded to the long bottom plates on the left and right sides of the machine base bottom plate, the bottom is welded to the machine base bottom plate, and the front is welded to the machine base end plate, and also includes angle steel reinforcement ribs 3, one end of the angle steel reinforcement rib 3 is welded to the angle steel 2, and the other end is welded to the bearing mounting stop circle of the machine base end plate. The high-speed motor rotor is installed on the bearing seat through the bearing, and the middle part of the angle steel reinforcement rib 3 is welded to the inner side of the machine base end plate. It also includes an arc plate 1, one side of the arc plate 1 at a right angle is welded to the machine base end plate, and the other side is welded to the machine base side plate. Angle steel 2 is matched to the size of the base and is the most basic component. Its function is to connect and fix the long bottom plates on the left and right sides, the base bottom plate, and the base end plates to form a whole, effectively reducing the deformation of the base. At the same time, it serves as the base and support point of angle steel reinforcement rib 3. Angle steel reinforcement rib 3 mainly thickens the base end plate and connects with angle steel 2 and other parts of the base to enhance rigidity. The right angle of 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 local strong connection, forming effective support and greatly enhancing rigidity. The above three reinforcement components are selected according to the size of the motor base, and the detailed data of the examples are not limited. The rigidity of the base is significantly improved, the parts and assembly are simplified, and more importantly, it can effectively reduce the vibration of the high-speed motor.

[0027] Specifically, the outer diameter of the high-speed motor rotor is smaller than the diameter of the bearing seat. The bearing seat is directly matched with the machine base. The outer ring of the end cover is matched with the inner ring of the machine base end plate. The inner ring of the end cover is matched with the bearing seat. The end cover plays a transitional role, but is not conducive to vibration. After the end cover is cancelled, the gap of at least 5 wires and the eccentricity generated by the matching of the end cover and the machine base, and the end cover and the bearing seat are reduced, thereby reducing the value of vibration 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 seat, and 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, and an end cover reinforcement rib 4 is provided to connect between the outer circle of the end cover and the inner circle of the machine base end plate. Although the end cover is retained, the diameter of the end cover is smaller than that of the conventional end cover. The end cover reinforcement rib 4 is connected between the outer circle of the end cover and the inner circle of the machine base end plate. In addition to keeping the end cover connected to the machine base, a channel is also reserved for the angle steel reinforcement rib 3 to enter and exit. 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 a 50*5 angle steel Q235-B. This type of steel has good toughness and can absorb energy and produce a certain deformation without breaking when subjected to impact or vibration, thereby improving the earthquake resistance and wind resistance of the structure.

[0030] Specifically, there are two angle steels 2 in total, front and back, which are further optimized to improve rigidity and reduce vibration.

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

[0032] Specifically, the angle steel reinforcement ribs 3 have two ends welded at one end in the middle of the angle steel 2, and the angle steel reinforcement ribs 3 have one end welded to the left and right ends of the angle steel 2 respectively. There is a bent plate reinforcement rib connecting the bent plates on the long bottom plates on the left and right sides and the bearing mounting stop circle of 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 reinforcement ribs.

[0033] Specifically, the curved plate 1 is made of 25-grade Q235-B steel plate, with two pieces on each side of the base and four pieces on the front and back. The 25-grade steel plate is relatively thin and has a regular shape. Produced through a hot rolling process, the steel plate 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, meeting the shape and size requirements of components in different engineering scenarios.

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

[0035] Specifically, the upper part of the machine base end plate has an inner circle with a smaller radius, and a bearing upper cover plate is provided to cooperate with the inner circle with a smaller radius of the upper part of the machine base end plate. After the end cover is removed, a maintenance window needs to be reserved, so the upper part of the machine base end plate still has an inner circle with a reduced radius. At this time, a cover plate is needed for sealing, and the cover plate plays a role of sealing and sound insulation.

[0036] Those skilled in the art should recognize that the above embodiments are merely intended to illustrate the present invention and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

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

2. The device for increasing 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 seat, and the bearing seat is directly matched with the machine base.

3. The device for increasing 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 seat and the bearing seat. The outer circle of the end cover is smaller than the inner circle of the machine seat end plate. An end cover reinforcement rib (4) is provided and connected between the outer circle of the end cover and the inner circle of the machine seat end plate.

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

5. The device for increasing 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 increasing rigidity and reducing vibration of a high-speed motor according to claim 1, characterized in that The angle steel reinforcement rib (3) is made of 16*25 flat steel Q235-B.

7. The device for increasing rigidity and reducing vibration of a high-speed motor according to claim 1, characterized in that The angle steel reinforcement ribs (3) have two ends welded to the center of the angle steel (2), and the angle steel reinforcement ribs (3) have one end welded to the left and right ends of the angle steel (2). There is a bent plate reinforcement rib connected between the bent plates on the left and right long bottom plates and the bearing mounting stop circle of the machine base end plate.

8. The device for increasing 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 2 pieces on the left and right sides of one end of the machine base and 4 pieces on the front and back.

9. The device for increasing 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 adopts the width size of the air inlet.

10. The device for increasing rigidity and reducing vibration of a high-speed motor according to claim 2, characterized in that The upper part of the machine base end plate has an inner circle with a smaller radius, and a bearing upper cover plate is provided to match the inner circle with a smaller radius of the upper part of the machine base end plate.

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