Sealing structure of IP66 protection grade motor

Abstract

The utility model discloses a sealing structure of an IP66 protection grade motor, which comprises a motor shaft, an end cover sleeved on the periphery of the motor shaft, a sealing ring I and a sealing ring II, and curved paths of the sealing ring I and the sealing ring II can be matched with curved paths of the end cover in a concave-convex manner to form sealing. According to the utility model, the sealing ring I and the sealing ring II are matched with the curved path of the end cover in a concave-convex manner to form sealing, and the sealing effect is improved, so that the overall protection grade of the motor is improved, and the protection grade IP66 can be reached.

Description

Technical Field

[0001] The utility model relates to the technical field of electric motors, in particular to a sealing structure of an electric motor with an IP66 protection grade. Background Art

[0002] Electric motors are a common mechanical device in everyday life. They convert electrical energy into mechanical energy. They use an energized coil to generate a rotating magnetic field, which acts on the rotor to create a magneto-electrodynamic torque. Electric motors primarily consist of a stator and a rotor. The direction of the force exerted on the current-carrying conductor in the magnetic field is related to the direction of the current and the magnetic flux lines. The working principle of the electric motor is that the magnetic field exerts force on the current, causing the motor to rotate. Currently, the sealing effect of electric motors with a protection level of IP55 or above is not very good. With economic and technological development, especially the rapid development of high-tech, higher performance requirements are being placed on electric motor products. Motors operating in some harsh environments need to meet IP66 protection requirements to meet operational requirements. Existing motors with an IP55 protection level suffer from inadequate sealing at the shaft penetration when operating in dusty, outdoor, or marine environments, which can easily damage the bearings. Utility Model Content

[0003] The purpose of the utility model is to provide a sealing structure for an IP66 protection grade motor to solve the technical problem of insufficient sealing at the shaft penetration point / to solve the technical problems existing in the above-mentioned prior art.

[0004] In order to achieve the above purpose, the specific technical solutions of the present utility model are as follows:

[0005] A sealing structure for an IP66 protection grade electric motor comprises a motor shaft and an end cover sleeved on the outer periphery of the motor shaft, as well as a first sealing ring and a second sealing ring. The curved paths of the first sealing ring and the second sealing ring can cooperate with the curved path of the end cover to form a seal.

[0006] Preferably, the sealing ring 1 and the sealing ring 2 have a curved path formed by a concave-convex structure, which can cooperate with the concave-convex curved path of the end cover to form a seal, and the gap between the curved paths is 0.35-0.5mm.

[0007] Preferably, the second sealing ring is tightly mounted on the machine shaft by interference fit and can rotate together with the machine shaft. The first sealing ring is composed of two semicircular rings. The first sealing ring and the second sealing ring are matched with each other through the outer circle and the plane and fixedly connected by bolts.

[0008] Preferably, the machine shaft is movably connected to the outer peripheral end cover through a bearing, the inner ring of the bearing is sleeved on the end of the machine shaft by interference fit, and the outer ring is installed on the end cover.

[0009] The utility model has the following advantages:

[0010] The utility model has a simple structure and is easy to process. The sealing is formed by the coordination of the curved concave and convex paths, so that the sealing effect of the motor is better and the protection grade of IP66 is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] Explanation of the markings in the figure: 1. End cover; 2. Bearing; 3. Crankshaft; 4. Sealing ring 1; 5. Sealing ring 2; 6. Bolt. DETAILED DESCRIPTION

[0013] In order to better understand the purpose, structure and function of the present invention, the sealing structure of an IP66 protection grade motor of the present invention is further described in detail below with reference to the accompanying drawings.

[0014] like Figure 1 As shown, the present invention provides a sealing structure for an IP66 protection grade electric motor, comprising a motor shaft 3, an end cover 1 sleeved around the outer periphery of the shaft 3, and a sealing ring 1 4 and a sealing ring 2 5. The sealing ring 1 4 and the sealing ring 2 5 can closely cooperate with the shaft 3 and the end cover 1 to form a seal.

[0015] The crankshaft 3 is movably connected to the outer end cover 1 through the bearing 2. The inner ring of the bearing 2 is sleeved on the end of the crankshaft 3 by interference fit, and the outer ring is installed on the end cover 1.

[0016] The sealing ring 2 5 is tightly fitted on the machine shaft 3 by interference fit and can rotate with the machine shaft 3. The contact surface between the sealing ring 2 5 and the end cover 1 is provided with a concave-convex structure. The curved path formed by it can match the concave-convex curved path on the end cover 1 to form a seal. The gap between the curved paths is 0.35-0.5mm.

[0017] Sealing ring 1 (4) consists of two semicircular rings. Its contact surface with end cap (1) features a concave-convex structure. The curved paths formed by these structures mate with the curved paths on end cap (1) to form a seal. The gap between the curved paths is 0.35-0.5 mm. Sealing ring 1 (4) and sealing ring 2 (5) are fixedly connected by bolts (6) through their outer circle and flat surface.

[0018] The beneficial effects of the utility model are:

[0019] The utility model forms a seal by cooperating the sealing ring 1 4, the sealing ring 2 5 and the curved concave-convex of the end cover 1, thereby improving the sealing effect, thereby improving the overall protection level of the motor to reach the protection level IP66.

[0020] It is understood that the present invention is described by way of certain embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. Furthermore, under the guidance of the present invention, these features and embodiments may be modified to suit specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are intended to be protected by the present invention.

Claims

1. A sealing structure for an IP66 protection grade electric motor, comprising a motor shaft (3), an end cover (1) sleeved on the outer periphery of the motor shaft (3), and a sealing ring 1 (4) and a sealing ring 2 (5), characterized in that: The curved paths of the sealing ring 1 (4) and the sealing ring 2 (5) can cooperate with the curved paths of the end cover (1) in a concave-convex manner to form a seal.

2. The sealing structure of an IP66 protection grade motor according to claim 1, characterized in that: The sealing ring 1 (4) and the sealing ring 2 (5) have a curved path formed by a concave-convex structure, which can cooperate with the concave-convex curved path of the end cover (1) to form a seal, and the gap between the curved paths is 0.35-0.5mm.

3. The sealing structure of an IP66 protection grade motor according to claim 1, characterized in that: The second sealing ring (5) is tightly mounted on the machine shaft (3) by means of interference fit and can rotate together with the machine shaft (3). The first sealing ring (4) is composed of two semicircular rings. The first sealing ring (4) and the second sealing ring (5) are fixedly connected by bolts (6) with their outer circles and planes fitted together.

4. The sealing structure of an IP66 protection grade motor according to claim 1, characterized in that: The machine shaft (3) is movably connected to the outer peripheral end cover (1) through a bearing (2); the inner ring of the bearing (2) is sleeved on the end of the machine shaft (3) by means of an interference fit, and the outer ring is mounted on the end cover (1).

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