A motor with vibration isolation function

Abstract

The present invention discloses a motor with a vibration isolation function, comprising an inner motor consisting of a rotor assembly, an end cover, and a bearing, and a housing. The inner motor is connected to the housing by welding, shrink fitting, or the like. Vibration isolation feet are symmetrically arranged on the left and right sides of the housing. The vibration isolation feet are an outwardly protruding structure consisting of a metal foot and damping plates and metal plates alternately arranged on the metal foot. The outer wall of the housing is provided with an embedded groove adapted to the damping plates and metal plates. The present invention symmetrically arranges vibration isolation feet consisting of a metal foot and damping plates and metal plates alternately arranged on the left and right sides of the housing. Utilizing the principles of multi-layer vibration isolation and damping isolation, the present invention effectively reduces the vibration transmitted from the motor stator to the motor foot without reducing the motor power density or increasing the motor weight, thereby solving the problem of the difficulty in effectively suppressing electromagnetic vibration in high-power-density motors.

Description

Technical Field

[0001] The present invention belongs to the technical field of motors, and in particular relates to a motor with a vibration isolation function, which is applicable to various motor fields with low vibration requirements. Background Art

[0002] As motors develop faster and faster, their power density and energy density continue to increase, their magnetic fields become more saturated, and their electromagnetic vibrations become more difficult to suppress.

[0003] In traditional motor design, the connection between the casing and the base is generally a rigid connection, and the energy transmitted from the stator core vibration to the base is attenuated very little, resulting in excessive vibration noise from the base.

[0004] Traditional electromagnetic vibration reduction methods mainly focus on optimizing and suppressing the electromagnetic force inside the motor, such as limiting the air gap magnetic flux amplitude, optimizing the magnetic flux waveform, and extending the motor vibration transmission path.

[0005] These measures have the disadvantages of reducing the power density of the motor and increasing the weight of the motor, and the effect of reducing vibration and noise needs to be improved. The purpose of the present invention is to solve the above problems. Summary of the Invention

[0006] The present invention provides a motor with a vibration isolation function, which effectively reduces the vibration transmitted from the motor stator to the motor feet without reducing the power density of the motor or increasing the weight of the motor.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a motor with vibration isolation function, including an inner motor composed of a rotor assembly, an end cover and a bearing, and a casing. The inner motor is connected to the casing by welding, shrink fitting, etc., and vibration isolation feet are symmetrically arranged on the left and right sides of the casing. The vibration isolation feet are an outward convex structure composed of a metal foot and damping plates and metal plates alternately arranged on the metal foot. The outer wall of the casing is provided with an embedded groove adapted to the damping plate and the metal plate.

[0008] The damping plate, metal plate and metal foot of the motor with vibration isolation function are integrally formed by casting or other methods.

[0009] The motor with vibration isolation function has multiple layers of damping plates and metal plates.

[0010] The damping plate and the metal plate of the motor with vibration isolation function are arc-shaped, preferably semicircular or arc-shaped concentric with the center of the metal foot.

[0011] In the motor with vibration isolation function, the contact surface between the damping plate and the metal plate is a sawtooth structure or a concave-convex groove structure, and adhesive glue is further applied to the contact surface.

[0012] The damping plate of the motor with vibration isolation function is made of a damping material that meets both structural strength and excellent damping performance, such as polyurethane material.

[0013] The beneficial effects of the present invention are as follows: the present invention symmetrically arranges vibration isolation feet composed of metal feet and damping plates and metal plates alternately arranged on the metal feet on the left and right sides of the casing, and utilizes the principles of multi-layer vibration isolation and damping vibration isolation to effectively reduce the vibration transmitted from the motor stator to the machine feet without reducing the motor power density or increasing the motor weight, thereby solving the problem that the electromagnetic vibration of high-power density motors is difficult to effectively suppress. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a structural schematic diagram of the vibration isolation foot of the present invention.

[0016] The reference numerals are: 1—inner motor, 2—housing, 3—vibration isolation foot, 3-a—metal plate, 3-b—damping plate, 3-c—metal foot. DETAILED DESCRIPTION

[0017] The present invention will be further described in detail below with reference to the accompanying drawings.

[0018] Reference Figure 1 、 Figure 2 As shown, the present invention discloses a motor with a vibration isolation function, comprising an inner motor 1 consisting of a rotor assembly, an end cover and a bearing, and a casing 2. The inner motor 1 is connected to the casing 2 by welding, shrink fitting, etc., and vibration isolation feet 3 are symmetrically provided on the left and right sides of the casing 2. The vibration isolation feet 3 are an outward convex structure consisting of a metal foot 3-c and a damping plate 3-b and a metal plate 3-a alternately arranged on the metal foot 3-c. The outer wall surface of the casing 2 is provided with an embedded groove adapted to the damping plate 3-b and the metal plate 3-a.

[0019] When assembling the motor of the present invention, the metal plate 3-a and the metal base 3-c are first fixed using tooling, and then each contact surface is coated with adhesive glue. The contact surface between the damping plate 3-b and the metal plate 3-a is a serrated structure or a concave-convex groove structure. A damping material that meets both structural strength and excellent damping performance is selected, such as a damping plate 3-b made of polyurethane material. Finally, the multi-layer damping plate 3-b is cast into one piece and then installed in the corresponding arc-shaped, semicircular, etc. grooves on the left and right sides of the shell 2.

[0020] The connection between the traditional motor casing and the foot is generally a rigid connection, and the energy attenuation of the vibration of the stator core transmitted to the machine foot is very small, which makes the vibration noise of the machine foot too large. The present invention symmetrically arranges a vibration isolation foot 3 composed of a metal foot 3-c and a damping plate 3-b and a metal plate 3-a alternately arranged on the left and right sides of the casing 2. By utilizing the principles of multi-layer vibration isolation and damping vibration isolation, the vibration transmitted from the motor stator to the machine foot is effectively reduced without reducing the power density of the motor or increasing the weight of the motor, thereby solving the problem that the electromagnetic vibration of high-power density motors is difficult to effectively suppress. The motor with a foot vibration isolation design provided by the present invention can be widely used in fields with strict requirements on motor vibration performance.

[0021] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the scope of the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A motor with vibration isolation function, characterized in that: The invention comprises an inner motor (1) composed of a rotor assembly, an end cover and a bearing, and a casing (2), wherein the inner motor (1) is connected to the casing (2) by welding or shrink fitting, and is characterized in that: vibration isolation feet (3) are symmetrically arranged on the left and right sides of the casing (2), and the vibration isolation feet (3) are an outer convex structure composed of a metal foot (3-c) and a damping plate (3-b) and a metal plate (3-a) alternately arranged on the metal foot (3-c). b), the metal plate (3-a) and the metal base (3-c) are integrally formed by casting, the outer wall surface of the housing (2) is provided with an embedding groove adapted to the damping plate (3-b) and the metal plate (3-a), the damping plate (3-b) and the metal plate (3-a) are arc-shaped and multi-layered, the contact surface of the damping plate (3-b) and the metal plate (3-a) is a sawtooth structure or a concave-convex groove structure, the contact surface is coated with adhesive glue, and the damping plate (3-b) is made of polyurethane material.

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