Insulation sealing structure of motor end cover

Abstract

The utility model provides an insulation sealing structure of a motor end cover, belongs to the technical field of motor accessories, and provides the insulation sealing structure of the motor end cover so as to improve insulation and sealing effects. According to the technical scheme, the insulation sealing structure of the motor end cover comprises the end cover, a bearing chamber and a connecting bolt, a center hole is formed in the center of the end cover, the bearing chamber is installed in the center hole, the bearing chamber is in a T-shaped cylindrical tube shape, the outer wall of a small-diameter tube and the inner end face of a large-diameter tube of the bearing chamber are both coated with Teflon coatings, and the outer wall of the large-diameter tube is coated with Teflon coatings. The inner end face of the large-diameter pipe of the bearing chamber is attached to the outer end face of the contact end cover and fixedly connected with the outer end face of the contact end cover through a plurality of connecting bolts, and a flat washer and a spring washer are arranged on a stud between a nut of each connecting bolt and the outer end face of the large-diameter pipe of the bearing chamber in a sleeved mode.

Description

Technical Field

[0001] This utility model relates to an insulating and sealing structure for a motor end cover, belonging to the technical field of motor accessories, specifically an insulating and sealing structure for a motor end cover. Background Technology

[0002] As a crucial component of a motor, the motor end cover primarily serves to protect the internal structure and insulation materials, enclose the motor space, and prevent the ingress of foreign objects. Simultaneously, the motor end cover plays a vital role in sealing the internal media. During motor operation, factors such as temperature, humidity, and prolonged load operation can easily lead to leakage of internal media like lubricating oil and coolant, resulting in decreased motor performance or even malfunction. Therefore, achieving a proper seal and insulation for the motor end cover is a prerequisite for normal motor operation. The primary function of the insulating end cover is to suppress shaft current generated during motor operation, thereby protecting the bearings from electrolytic corrosion and ensuring normal motor operation.

[0003] To ensure the sealing and insulation of the motor end cover, the gaps between the end cover and other components need to be filled. Otherwise, during motor operation, air, moisture, dust, and other substances may enter the motor, leading to problems such as overheating and unstable operation. In certain environments, it can even damage the motor. Currently, sealing is often achieved by applying sealant to the installation gaps, but the sealing effect is still not ideal. Furthermore, the insulation performance of the motor end cover cannot meet expectations during use, making it unsuitable for applications in special environments. Utility Model Content

[0004] To address one of the aforementioned technical deficiencies, this utility model provides an insulating and sealing structure for a motor end cover to improve insulation and sealing performance.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: an insulating and sealing structure for a motor end cover, including an end cover, a bearing chamber and connecting bolts. The end cover has a central hole, and a bearing chamber is installed in the central hole. The bearing chamber is a T-shaped cylindrical tube. The outer wall of the small-diameter tube and the inner end face of the large-diameter tube of the bearing chamber are coated with Teflon coating. The inner end face of the large-diameter tube of the bearing chamber is in contact with the outer end face of the end cover and is fixedly connected by multiple connecting bolts. A flat washer and a spring washer are fitted on the stud between the nut of the connecting bolt and the outer end face of the large-diameter tube of the bearing chamber.

[0006] The thickness of the Teflon coating is 1-1.5 mm.

[0007] The bearing housing has a through hole on the large-diameter pipe for the stud of the connecting bolt to pass through. An insulating sleeve is fitted on the stud of the connecting bolt and is located inside the through hole.

[0008] The outer end face of the end cap is provided with a groove corresponding to the through hole, and the insulating sleeve extends into the groove.

[0009] An insulating pad is fitted on the stud near the nut of the connecting bolt, and the insulating pad is in close contact with the outer end face of the large diameter pipe of the bearing housing.

[0010] An annular insulating plate is installed between the outer end face of the end cap and the inner end face of the large-diameter pipe of the bearing chamber, and the insulating plate is provided with a round hole for the insulating sleeve and connecting bolt to pass through.

[0011] The exposed gaps at the connection between the end cap and the bearing housing are all coated with sealant.

[0012] The insulating and sealing structure of the motor end cover provided by this utility model achieves comprehensive protection of the installation gap through the combination of multiple components, thereby ensuring and improving the insulation and sealing effect of the end cover. Attached Figure Description

[0013] The present invention will now be described in further detail with reference to the accompanying drawings;

[0014] Figure 1 This is a schematic diagram of the structure of this utility model;

[0015] Figure 2 for Figure 1 A magnified structural diagram of part A in the diagram. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are some embodiments of this utility model, but not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0017] like Figure 1-2 As shown, this utility model discloses an insulating and sealing structure for a motor end cover, comprising an end cover 1, a bearing chamber 2, and connecting bolts 3. The end cover 1 has a central hole 4, and the bearing chamber 2 is installed inside the central hole 4. The bearing chamber 2 is a T-shaped cylindrical tube. The outer wall of the small-diameter tube and the inner end face of the large-diameter tube of the bearing chamber 2 are coated with a Teflon coating 5. The Teflon coating 5 has properties such as non-stick, high temperature resistance, low friction, corrosion resistance, anti-sticking and moisture resistance, and high insulation, which greatly improves the insulation performance at the end cover connection. The inner end face of the large-diameter tube of the bearing chamber 2 is in contact with the outer end face of the end cover 1 and is fixedly connected by multiple connecting bolts 3. A flat washer and a spring washer are fitted on the stud between the nut of the connecting bolt 3 and the outer end face of the large-diameter tube of the bearing chamber 2.

[0018] The thickness of the Teflon coating 5 is 1-1.5 mm.

[0019] The bearing chamber 2 has a through hole 6 on its large-diameter pipe for the stud of the connecting bolt 3 to pass through. An insulating sleeve 7 is fitted on the stud of the connecting bolt 3 and is located inside the through hole 6 to further improve the insulation performance.

[0020] The outer end face of the end cap 1 is provided with a groove corresponding to the through hole 6, and the insulating sleeve 7 extends into the groove.

[0021] An insulating pad 8 is fitted on the stud near the nut on the connecting bolt 3, and the insulating pad 8 is in close contact with the outer end face of the large diameter pipe of the bearing chamber 2.

[0022] An annular insulating plate 9 is installed between the outer end face of the end cap 1 and the inner end face of the large-diameter pipe of the bearing chamber 2, and the insulating plate is provided with a round hole for the insulating sleeve 7 and the connecting bolt 3 to pass through.

[0023] The combination of insulating sleeve 7, insulating pad 8 and insulating plate 9 improves the sealing effect of the connection.

[0024] All exposed gaps at the connection between the end cap 1 and the bearing chamber 2 are coated with sealant 10. This includes the exposed gaps at the connection between the insulating plate 9 and the end cap 1 and the bearing chamber 2, which require the application of sealant 10.

[0025] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An insulating and sealing structure for a motor end cover, characterized in that: Includes an end cap (1), a bearing chamber (2) and connecting bolts (3). The end cap (1) has a central hole (4) in the center. The bearing chamber (2) is installed in the central hole (4). The bearing chamber (2) is a T-shaped cylindrical tube. The outer wall of the small diameter tube and the inner end face of the large diameter tube of the bearing chamber (2) are coated with Teflon coating (5). The inner end face of the large diameter tube of the bearing chamber (2) is in contact with the outer end face of the end cap (1) and is fixedly connected by multiple connecting bolts (3). A flat washer and a spring washer are fitted on the stud between the nut of the connecting bolt (3) and the outer end face of the large diameter tube of the bearing chamber (2).

2. The insulating and sealing structure of a motor end cover according to claim 1, characterized in that: The thickness of the Teflon coating (5) is 1-1.5 mm.

3. The insulating and sealing structure of a motor end cover according to claim 1, characterized in that: The bearing chamber (2) has a through hole (6) on its large-diameter pipe for the stud of the connecting bolt (3) to pass through. An insulating sleeve (7) is fitted on the stud of the connecting bolt (3), and the insulating sleeve (7) is located inside the through hole (6).

4. The insulating and sealing structure of a motor end cover according to claim 3, characterized in that: The outer end face of the end cap (1) is provided with a groove corresponding to the through hole (6), and the insulating sleeve (7) extends into the groove.

5. The insulating and sealing structure of a motor end cover according to claim 1, characterized in that: An insulating pad (8) is fitted on the stud near the nut of the connecting bolt (3), and the insulating pad (8) is in close contact with the outer end face of the large diameter pipe of the bearing chamber (2).

6. The insulating and sealing structure of a motor end cover according to claim 3, characterized in that: An annular insulating plate (9) is installed between the outer end face of the end cap (1) and the inner end face of the large-diameter pipe of the bearing chamber (2), and the insulating plate (9) is provided with a round hole for the insulating sleeve (7) and the connecting bolt (3) to pass through.

7. The insulating and sealing structure of a motor end cover according to claim 1, characterized in that: The exposed gaps at the connection between the end cap (1) and the bearing chamber (2) are coated with sealant (10).

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