A vibration isolation end cover and motor thereof

Abstract

The present invention discloses a vibration-isolating end cap, which is cast from a damping material body, a metal transition ring, and an end cap body. The metal transition ring adopts a lobed structure, consisting of a plurality of circumferentially distributed lobes. The lobes are arranged on the outer circumference of the end cap body, and damping material is cast between the lobes and the end cap body to form a whole. Also disclosed is a vibration-isolating motor based on the vibration-isolating end cap. The present invention utilizes the principle of multi-layer damping and vibration isolation to effectively reduce vibration transmitted from the motor bearings and rotor to the motor feet. The present invention can be widely used in fields with strict requirements on motor vibration.

Description

Technical Field

[0001] The invention belongs to the technical field of motor vibration isolation, and particularly relates to a vibration isolation end cover of a motor and a motor using the end cover. Background Art

[0002] The end cover and stator housing of traditional motor structures are generally rigidly connected. The vibration caused by the eccentricity of the stator-rotor air gap, the imbalance of the rotor or the bearing itself has little energy attenuation on the path from the end cover to the stator housing, and is further transmitted through the machine foot, resulting in excessive vibration noise of the machine foot. Summary of the Invention

[0003] One of the purposes of the present invention is to provide a vibration isolation end cover for a motor, which can effectively reduce the vibration transmitted from the motor stator to the motor foot without reducing the motor power density or increasing the motor weight.

[0004] The technical solution adopted by the present invention to solve its technical problems is: a vibration isolation end cover, which is cast by a damping material body, a metal transition ring and an end cover body. The metal transition ring is composed of a number of petals evenly distributed along the circumferential direction. The damping material body is filled between the petals and the outer circular side of the end cover body to form a whole after solidification. The damping material body covers the metal transition ring to form a circular ring arranged outside the end cover body.

[0005] The vibration isolation end cover has a circular ring consisting of one layer or multiple layers.

[0006] In the vibration isolation end cover, the contact surface between the metal transition ring and the damping material body is a sawtooth structure or a concave-convex groove structure.

[0007] The damping material of the vibration isolation end cover is a polyurethane material that meets both structural strength and excellent damping performance.

[0008] The vibration isolation end cover has the end cover main body and the surface of the petal body both coated with adhesive glue.

[0009] A second object of the present invention is to provide a vibration isolation motor, which is composed of a stator and rotor assembly, a bearing and the above-mentioned vibration isolation end cover.

[0010] The beneficial effects of the present invention are:

[0011] The vibration isolation end cover of the present invention is cast by a metal transition ring with a petal structure, a damping material and an end cover body, and utilizes the multi-layer damping vibration isolation principle to effectively reduce the vibration transmitted from the motor rotor and bearing to the motor foot.

[0012] The motor of the present invention increases the damping of the stator and rotor vibration transmission path by arranging a vibration isolation structure on the end cover, thereby reducing the transmission of rotor and bearing vibration to the outside of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic structural diagram of the vibration isolation end cover of the present invention;

[0014] Figure 2 is a cross-sectional view of the vibration isolation end cover of the present invention;

[0015] Figure 3 Schematic diagram of the structure of the metal transition ring of the present invention.

[0016] The reference numerals are: 1—damping material body, 2—metal transition ring, 3—end cover body. 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 and Figure 3 As shown, the present invention discloses a vibration isolation end cover, which is cast by a damping material body 1, a metal transition ring 2 and an end cover main body 3. The metal transition ring 2 adopts a petal structure, which is composed of a plurality of petal bodies distributed along the circumferential direction to prevent component deformation caused by differences in thermal expansion coefficients of different materials during the casting process. The damping material 1 is cast between the petal bodies and the end cover main body 3 and solidified into a whole, and finally the damping material body 1 and the metal transition ring 2 form a circular ring arranged outside the end cover main body 3.

[0019] The circular ring formed by the damping material body 1 and the metal transition ring 2 has one or more layers, and the contact surface between the metal transition ring 2 and the damping material body 1 is a serrated structure or a concave-convex groove structure. The damping material body 1 is made of polyurethane material that meets both structural strength and excellent damping performance, and adhesive glue is coated on the surface of the end cover main body 3 and the petal body 2.

[0020] The present invention discloses a vibration isolation motor comprising a stator and rotor assembly, bearings, and the aforementioned vibration isolation end caps. To manufacture the end caps, the metal transition ring 2 and the end cap body 3 are first secured using a tool, and adhesive is applied to each contact surface. Finally, the damping material body 1 is cast and cured to form a single unit. The cast end caps enclose the adhesive.

[0021] The motor with end cover vibration isolation design provided by the present invention can be widely used in fields with strict requirements on motor vibration performance.

[0022] 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 vibration isolation end cover, characterized in that: The invention is casted from a damping material body (1), a metal transition ring (2) and an end cover body (3); the metal transition ring (2) is composed of a plurality of lobes evenly distributed along the circumference; the damping material body (1) made of polyurethane is filled between the lobes and the outer circumference of the end cover body (3); the surfaces of the end cover body (3) and the lobes are coated with adhesive glue; the damping material body (1) covers the metal transition ring (2) to form a multi-layer circular ring arranged outside the end cover body (3); the contact surface between the metal transition ring (2) and the damping material body (1) is a sawtooth structure or a concave-convex groove structure.

2. A vibration isolation motor, characterized in that: The invention is composed of a stator and rotor assembly, a bearing and the vibration isolation end cover as claimed in claim 1.

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