Shaft grounding ring convenient to install

Abstract

The utility model relates to a shaft grounding ring convenient to install, which comprises an annular shell, an upper support plate, a lower support plate and a conductive fiber bundle, one end of the conductive fiber bundle is provided with an installation piece, the lower support plate is provided with at least two grooves, the installation piece is arranged in the grooves, the upper support plate is arranged on the upper side of the lower support plate, and the lower support plate is arranged on the lower side of the annular shell. The upper supporting plate and the lower supporting plate are both arranged in the annular shell, the annular shell is provided with a fixing part protruding inwards, and the fixing part abuts against the upper supporting plate. The problems that an existing carbon fiber grounding ring is inconvenient to install and not firm in structure are solved.

Description

Technical Field

[0001] The utility model relates to an axially grounded ring which is convenient to install. Background Art

[0002] A carbon fiber grounded ring is a part used to solve the problem of electric corrosion of the bearings of a variable-frequency motor, and usually has a conductive fiber bundle arranged therein. The carbon fiber grounded ring is installed in the motor, and its annular outer periphery is press-fitted and assembled with the hole of the motor housing with an interference fit. The inner side of the ring contacts the motor rotating shaft through the conductive fiber to form an axial current path. When the motor is working, the high-frequency voltage difference on the rotating shaft is conducted to the motor housing and then released to the ground through the motor housing, so as to avoid the axial current being released to the motor housing through the motor bearing, resulting in high-frequency electric corrosion between the bearing balls and the bearing bush, damaging the bearing and reducing the bearing life.

[0003] The existing carbon fiber grounded ring is not convenient to install, and its structure cannot take into account the good fixation of the conductive fiber bundle and a more convenient installation effect at the same time. Therefore, an axially grounded ring which is convenient to install is needed, with more convenient installation and a more firm structure. Summary of the Utility Model

[0004] The purpose of the utility model is to solve the above-mentioned deficiencies of the prior art, and provide an axially grounded ring which is convenient to install. By setting the matching structure of the mounting member and the groove and the fixing portion protruding inside the annular housing, it solves the problems of inconvenient installation and unstable structure of the existing carbon fiber grounded ring. The following are the specific solutions:

[0005] An axially grounded ring includes an annular housing, an upper support plate, a lower support plate and a conductive fiber bundle. One end of the conductive fiber bundle is provided with a mounting member. At least two grooves are provided on the lower support plate. The mounting member is arranged in the grooves. The upper support plate is arranged on the upper side of the lower support plate. Both the upper support plate and the lower support plate are arranged inside the annular housing. The annular housing is provided with a fixing portion protruding inwards, and the fixing portion abuts against the upper support plate.

[0006] The inside of the groove is provided with a conductive adhesive, and the conductive adhesive can be selectively added to further enhance the fixing effect.

[0007] The mounting member is provided with protrusions along the circumferential direction of the outer surface, which can better cooperate with the conductive adhesive to complete the fixation of the fiber bundle.

[0008] The protrusions abut against the inner surface of the groove, and a radian is provided at the connection between the protrusions and the mounting member, which further cooperates with the conductive adhesive to complete the fixation of the fiber bundle.

[0009] For better electrical conductivity, the material of the annular housing is aluminum alloy.

[0010] For better electrical conductivity, the materials of both the upper support plate and the lower support plate are aluminum alloy.

[0011] The outer diameters of the upper support plate and the lower support plate are the same, which can better fix the fiber bundle.

[0012] Furthermore, the groove is circumferentially arranged on the lower support plate with the center of the lower support plate as the axis.

[0013] The fixing part is a continuous annular structure or a cylindrical structure formed by curling and crimping, which further strengthens the fixing effect on the upper and lower support plates.

[0014] Beneficial effects: By setting the matching structure of the installation part and the groove, after the operator puts the conductive fiber bundle into the groove, the conductive adhesive can be selectively added, and then the upper support plate is covered for overall installation, which is faster and more convenient;

[0015] By setting the fixing part protruding inside the annular shell, it solves the problems of inconvenient installation and structural instability of the existing carbon fiber grounding ring. Moreover, the fixing part protruding inside the annular shell can turn the upper edge of the aluminum shell inward and rivet it through the riveting and flanging process. In this way, the upper and lower support plates are fixed, forming a greater pressing force, and the installation is faster and more firm. Description of the Drawings

[0016] Figure 1 is a three-dimensional perspective schematic diagram of an axially grounded ring that is convenient for installation;

[0017] Figure 2 is an exploded perspective schematic diagram of an axially grounded ring that is convenient for installation;

[0018] Figure 3 is a side perspective schematic diagram of an axially grounded ring that is convenient for installation;

[0019] Figure 4 is Figure 3 a cross-sectional perspective schematic diagram of;

[0020] Figure 5 is Figure 4 a partial perspective enlarged schematic diagram of;

[0021] In the figure: 1, convexity; 2, upper support plate; 3, lower support plate; 4, conductive fiber bundle; 5, groove; 6, installation part; 7, annular shell; 8, fixing part. Detailed Description of the Embodiment

[0022] To deepen the understanding of the present invention, the present invention will be further described in detail below in combination with the embodiments and the drawings. The embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0023] In this embodiment:

[0024] Please refer to Figures 1-5, A shaft grounding ring, comprising an annular housing 7, an upper support plate 2, a lower support plate 3 and a conductive fiber bundle 4. One end of the conductive fiber bundle 4 is provided with a mounting member 6. At least two grooves 5 are provided on the lower support plate 3. The mounting member 6 is arranged in the groove 5. The upper support plate 2 is arranged on the upper side of the lower support plate 3. Both the upper support plate 2 and the lower support plate 3 are arranged in the annular housing 7. The annular housing 7 is provided with an inwardly protruding fixing portion 8, and the fixing portion 8 abuts against the upper support plate 2.

[0025] The inside of the groove 5 is provided with a conductive adhesive. The mounting member 6 is provided with a protrusion 1 along the outer surface in the circumferential direction. The protrusion 1 abuts against the inner surface of the groove 5. A radian is provided at the connection between the protrusion 1 and the mounting member 6. The material of the annular housing 7 is aluminum alloy. The materials of both the upper support plate 2 and the lower support plate 3 are aluminum alloy. The outer diameters of the upper support plate 2 and the lower support plate 3 are the same. The groove 5 is arranged on the lower support plate 3 in the circumferential direction with the center of the lower support plate 3 as the axis. The fixing portion 8 is a continuous annular structure or a cylindrical structure formed by curling and crimping. The number of conductive fiber bundles 4 is 12. The thickness of the annular housing 7 is 8 mm. The inner diameter of the annular housing 7 is 39 mm. The outer diameter of the annular housing 7 is 62 mm. The conductive fiber bundle 4 protrudes 6 mm from the annular housing.

[0026] Implementation example:

[0027] During installation, there are several grooves 5 on the aluminum alloy lower support plate 3. One conductive fiber bundle 4 assembly is installed in each groove 5. Some positions are tightly pre-fixed. Then, conductive adhesive is applied to the mounting member 6 at the rear of each conductive fiber bundle 4. Then, the upper support plate 2 is covered and pressed tightly. Then, the upper support plate 2 and the lower support plate 3 are installed together into the annular housing 7. The upper edge of the annular housing 7 is turned inward and riveted through a riveting and flanging process to form the fixing portion 8, thereby fixing the upper and lower support plates 3 and the conductive fibers therein in the housing to form an integral component.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the purpose and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. An axial grounding ring, characterized in that, It includes a ring-shaped outer shell, an upper support plate, a lower support plate and a conductive fiber bundle. One end of the conductive fiber bundle is provided with a mounting member. At least two grooves are provided on the lower support plate, and the mounting member is arranged in the grooves. The upper support plate is arranged on the upper side of the lower support plate, and both the upper support plate and the lower support plate are arranged in the ring-shaped outer shell. The ring-shaped outer shell is provided with an inwardly protruding fixing portion, and the fixing portion abuts against the upper support plate.

2. The shaft grounding ring according to claim 1, wherein The inside of the groove is provided with a conductive adhesive.

3. An axial grounding ring according to any one of claims 1-2, characterized in that, The mounting member is circumferentially provided with protrusions along the outer surface.

4. The shaft grounding ring according to claim 3, characterized in that, The protrusions abut against the inner surface of the groove, and a radian is provided at the connection between the protrusions and the mounting member.

5. An axial grounding ring according to claim 1, characterized in that, The material of the ring-shaped outer shell is aluminum alloy.

6. The shaft grounding ring according to claim 1, wherein, The materials of both the upper support plate and the lower support plate are aluminum alloy.

7. An axial grounding ring according to claim 1, characterized in that, The outer diameters of the upper support plate and the lower support plate are the same.

8. An axial grounding ring according to claim 1, characterized in that, The grooves are circumferentially arranged on the lower support plate with the center of the lower support plate as the axis.

9. The shaft grounding ring according to claim 1, wherein The fixing portion is a continuous ring-shaped structure or a cylindrical structure formed by curling and crimping.

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