Bearing cover plate and generator assembly with same

Abstract

The utility model relates to the field of generators, in particular to a bearing cover plate and a generator assembly with the same. Comprising a cover plate body which is provided with an assembly hole. A water retaining mechanism is arranged on the cover plate body; the water retaining mechanism comprises a drainage component arranged on the cover plate body; the drainage part comprises a drainage strip arranged on the cover plate body; through the arrangement of the water retaining mechanism, muddy water around the bearing can be drained, and the muddy water is reduced or prevented from flowing into the bearing.

Description

Technical Field

[0001] The utility model relates to the field of generators, in particular to a bearing cover plate and a generator assembly having the bearing cover plate. Background Art

[0002] The AC generator is the main power supply part of the automobile, and the front-end bearing of the generator is the main transmission part. Among the after-sales failure modes of the bearings, mud and water entering the bearings is one of the main failure modes.

[0003] Therefore, how to improve the bearing sealing performance is currently a research direction to improve the after-sales quality of generators.

[0004] When installing the bearing, the bearing is generally fixed by a bearing cover plate. The main function of the bearing cover plate is to fix the front end bearing by tightening with screws to limit the axial displacement of the bearing.

[0005] There are two ways to improve the sealing performance of existing generator bearings. The first is to improve the sealing performance of the bearing itself.

[0006] The second method is to set sealing parts around the bearing, such as sealing rubber, sealing parts, etc.

[0007] The first method relies on the bearing manufacturer to optimize the sealing lip structure, such as using a three-lip sealing structure. This method only relies on a single bearing part.

[0008] The second type is that the generator manufacturers design according to the motor structure and add sealing parts. This type of sealing design is generally more complicated. For example, the addition of new sealing parts requires increasing the generator assembly process and increasing the difficulty of parts processing (the generator needs to be equipped with a structure that cooperates with the sealing parts. Considering the matching accuracy, generally the matching parts need to be fine-machined).

[0009] In addition, the reliability of parts is insufficient, such as the sealing rubber is prone to aging.

[0010] For example, the content disclosed in Patent 201920206976.2-Long-life generator bearing seal.

[0011] In order to improve at least one of the above problems, it is necessary to optimize the design of the existing bearing sealing method. Utility Model Content

[0012] The utility model aims to provide a bearing cover plate structure which can reduce muddy water from entering into the bearing.

[0013] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0014] A bearing cover plate comprises a cover plate body, wherein the cover plate body is provided with an assembly hole;

[0015] The cover plate body is provided with a water retaining mechanism;

[0016] The water retaining mechanism comprises a drainage component arranged on the cover plate body;

[0017] The drainage component includes a drainage strip arranged on the cover plate body.

[0018] The drainage component includes a plurality of drainage strips, and each of the drainage strips is symmetrically distributed at intervals on the cover plate body.

[0019] Each of the drainage strips comprises two single drainage strips, and the two single drainage strips are arranged to intersect each other; and each of the drainage strips is V-shaped in horizontal projection.

[0020] The water retaining mechanism further comprises a retaining platform component disposed on the cover plate body; the retaining platform component comprises a water retaining ring rib; the water retaining ring rib is arranged at the edge of the assembly hole.

[0021] The retaining platform component also includes a transition frustum arranged on the cover plate body, and the transition frustum extends from a side of the water retaining ring rib away from the assembly hole to a side away from the sleeve assembly hole.

[0022] The transition truncated cone has a flow guide slope at one end away from the water retaining ring rib.

[0023] The transition cone is distributed in the area between the drainage component and the water retaining ring rib; the drainage strips are distributed around the transition cone.

[0024] The cover plate body is provided with a positioning notch.

[0025] The cover plate body is provided with a mounting and fixing hole.

[0026] A generator assembly comprises the bearing cover plate; the inner diameter of the water retaining ring rib on the bearing cover plate is larger than the outer diameter of the inner ring of the bearing adjacent to the bearing cover plate.

[0027] The advantages of the utility model are:

[0028] The utility model discloses a bearing cover plate and a generator assembly having the bearing cover plate.

[0029] The utility model can drain muddy water around the bearing by setting the water retaining mechanism, thereby reducing or preventing muddy water from flowing into the bearing. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The following is a brief description of the contents expressed in each of the drawings of the utility model specification and the marks in the drawings:

[0031] Figure 1 It is a stereogram of the utility model from the first viewing angle.

[0032] Figure 2 It is a stereoscopic diagram of the utility model from a second viewing angle.

[0033] Figure 3 It is a top view of the utility model.

[0034] Figure 4 It is a cross-sectional view of the utility model.

[0035] The marks in the above figure are:

[0036] 1. Cover plate body, 1-1. Water retaining mechanism, 2. Assembly hole, 3. Drainage component, 31. Drainage strip, 311. Single drainage strip, 4. Transition cone, 41. Guide slope, 5. Water retaining rib, 6. Positioning notch, 7. Installation and fixing hole. DETAILED DESCRIPTION

[0037] The specific implementation methods of the present utility model will be further explained in detail below by describing the optimal embodiments with reference to the accompanying drawings.

[0038] A bearing cover plate comprises a cover plate body 1, wherein the cover plate body 1 is provided with an assembly hole 2; the cover plate body 1 is provided with a water retaining mechanism 1-1; the utility model can drain muddy water around the bearing through the setting of the water retaining mechanism 1-1, thereby reducing or preventing muddy water from flowing into the bearing.

[0039] The utility model mainly optimizes the structure of the bearing cover plate. The cover plate body 1 of the utility model is the main structure of the bearing cover plate. A water retaining mechanism 1-1 is provided on the cover plate body 1. The water retaining mechanism 1-1 plays a good blocking and isolating role, preventing muddy water from moving along the end surface of the cover plate body 1, thereby preventing muddy water from entering the assembly hole 2, thereby preventing muddy water from entering the bearing in the assembly hole 2.

[0040] At the same time, in the utility model, the water retaining mechanism 1-1 includes a drainage component 3 arranged on the cover body 1; the drainage component 3 includes a drainage strip 31 arranged on the cover body 1; the drainage strip 31, as the name implies, plays a drainage role, which facilitates the control of the movement direction of muddy water. At the same time, in essence, the drainage strip 31 acts as a blocking block, plays a flow blocking role, and prevents muddy water from flowing into the assembly hole 2.

[0041] Furthermore, in the utility model, the drainage component 3 includes a plurality of drainage strips 31, and the plurality of drainage strips 31 are distributed at the edge of the cover body 1, which play a good blocking role. At the same time, in the utility model, each of the drainage strips 31 is symmetrically distributed on the cover body 1 at intervals; here, the symmetry of the arrangement position of the drainage strips 31 can be ensured, thereby ensuring the overall dynamic balance of the generator.

[0042] Furthermore, in the utility model, each of the drainage strips 31 includes two single drainage strips 311, and the two single drainage strips 311 are arranged to intersect each other; the horizontal projection of each drainage strip 31 is V-shaped; the V-shaped drainage strip 31 can better block the mud and water, and can also play a better drainage role, facilitating the rapid discharge of mud and water.

[0043] Furthermore, in the utility model, the water retaining mechanism 1-1 also includes a retaining platform component arranged on the cover plate body 1; the retaining platform component includes a water retaining ring rib 5; the water retaining ring rib 5 is arranged at the edge of the assembly hole 2; in the utility model, the water retaining ring rib 5 is mainly used in conjunction with the drainage strip 31 to play a secondary blocking role, so that the muddy water flowing into the gap between adjacent drainage strips 31 is blocked and diverted again, thereby playing a better protective role.

[0044] At the same time, in the utility model, the water retaining rib 5 is coaxially arranged with the assembly hole 2; such a setting can avoid the existence of the water retaining rib 5 affecting the subsequent assembly and operation of the bearing; and also avoid installation interference between the subsequent bearing cover plate and adjacent components.

[0045] Meanwhile, in actual design, the inner diameter of the water retaining rib 5 is required to be larger than the outer diameter of the corresponding bearing inner ring; such a setting can avoid the interference between the rotation of the bearing and the cover plate body 1.

[0046] Furthermore, in the utility model, the baffle component also includes a transition cone 4 arranged on the cover body 1, and the transition cone 4 extends from the side of the water retaining ring rib 5 away from the assembly hole 2 to the side away from the sleeve assembly hole 2; the transition cone 4 plays a good bridging and connecting role, and its basic role is to play a blocking role, reducing the water flow of muddy water entering the water retaining ring rib 5, and at the same time, the transition cone 4 also plays a reinforcing role, which can ensure the structural strength of the cover body 1 to a certain extent.

[0047] In addition, the transition cone 4 here also plays a secondary flow blocking role, and can cooperate with the drainage strip 31 to better block the flow of muddy water to the assembly hole 2.

[0048] At the same time, in the utility model, the transition cone 4 is provided with a guide slope 41 at one end away from the water retaining ring rib 5; the setting of the guide slope 41 facilitates the water between the transition cone 4 and the drainage strip 31 to be drained to the top of the transition cone 4, and finally diverted and drained through the water retaining ring; at the same time, in the utility model, the drainage strips 31 in the drainage component 3 are distributed around the transition cone 4; such a setting makes the transition cone 4 in the area before each drainage strip 31 and the water retaining ring rib 5, so that the three have a coordinated cooperation, first of all The three cooperate with each other to form a step on the cover body 1, thereby preventing mud and water from flowing into the assembly hole 2 along the end face of the cover body 1; at the same time, in the utility model, the drainage strip 31 plays a primary blocking and drainage role, and the setting of the transition cone 4 and the guide slope 41 plays a secondary blocking and drainage role. Subsequently, the water between the transition cone 4 and the drainage strip 31 enters the water retaining rib 5 through the transition cone 4; and the water retaining rib 5 plays the final blocking and diversion role, which is equivalent to having a three-level blocking and drainage role, and finally preventing water from entering the assembly hole 2.

[0049] Furthermore, in the utility model, a positioning notch 6 is provided on the cover plate body 1; the setting of the positioning notch 6 in the utility model plays the best installation positioning role. During subsequent use, the positioning notch 6 cooperates with the protrusion on the inner side of the end cover, thereby ensuring the accuracy and stability of the installation position of the bearing cover plate inside the end cover; at the same time, in actual design, a positioning notch 6 is provided around the cover plate body 1; that is, a positioning notch 6 can be provided at the edges of the cover plate body 1, which can better ensure the accuracy of the installation position of the bearing cover plate and avoid the offset rotation of the bearing cover plate inside the end cover.

[0050] Furthermore, in the present invention, the cover body 1 is provided with mounting holes 7; one mounting hole 7 is provided at each of the four corners of the cover body 1, and can be subsequently fixed in the end cover by screws or bolts.

[0051] A generator assembly includes the bearing cover plate; based on the setting of the bearing cover plate, the risk of water ingress into the bearing using the bearing cover plate can be reduced; at the same time, the inner diameter of the water retaining rib 5 on the bearing cover plate is larger than the outer diameter of the inner ring of the bearing adjacent to the bearing cover plate; the interference between the installation and subsequent operation of the components can be reduced.

[0052] specific:

[0053] The utility model discloses a bearing cover plate, which mainly comprises a cover plate body 1, on which a water retaining mechanism 1-1 is arranged; the water retaining mechanism 1-1 comprises a drainage strip 31, a transition truncated cone 4 and a water retaining ring rib 5.

[0054] By arranging four evenly distributed V-shaped drainage strips 31 on the bearing cover plate, when muddy water flows into the periphery of the bearing, it is drained through the V-shaped drainage strips 31 to ensure that the muddy water does not flow into the interior of the bearing.

[0055] At the same time, in order to prevent the V-shaped drainage strip 31 from being unable to fully drain the muddy water when the muddy water splashes, a circular water retaining ring rib 5 is added to the cover plate body 1 to further prevent the muddy water from flowing into the bearing.

[0056] At the same time, in order to facilitate the installation of the bearing cover plate, four positioning notches 6 are arranged on the edges of the cover plate body 1.

[0057] V-shaped drainage strips 31 are evenly distributed on the outer side of the cover body 1. The V-shaped drainage strips 31 guide the mud and water outside so that the mud flows out in the expected direction.

[0058] A water retaining ring rib 5 is arranged at the innermost side of the cover plate body 1 , so that the remaining muddy water that is not fully drained by the V-shaped drainage strip 31 can flow out through the periphery of the water retaining ring rib 5 .

[0059] A transition truncated platform 4 is provided between the V-shaped drainage strip 31 and the water retaining ring rib 5 so that the muddy water that does not flow in from the V-shaped drainage strip 31 can flow out in a desired direction.

[0060] Four circular positioning notches 6 are arranged on the periphery of the inner ring of the bearing to facilitate the installation of the bearing cover plate.

[0061] Summary of the utility model: The utility model optimizes the structure of the bearing cover plate. Such a setting will basically not cause changes to the motor cost, is easy to install, and has a reliable structure.

[0062] On the basis of retaining the installation function of the bearing cover plate, the bearing cover plate structure is optimized to have a certain sealing and protection function for the bearing, thereby improving the bearing sealing ability and greatly reducing the failure mode of the bearing due to mud and water ingress.

[0063] Obviously, the specific implementation of the present invention is not limited by the above-mentioned methods. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, they are all within the protection scope of the present invention.

Claims

1. A bearing cover plate, It is characterized in that It comprises a cover plate body, and the cover plate body is provided with an assembly hole; The cover plate body is provided with a water retaining mechanism; The water retaining mechanism comprises a drainage component arranged on the cover plate body; The drainage component includes a drainage strip arranged on the cover plate body.

2. A bearing cover plate according to claim 1, It is characterized in that The drainage component includes a plurality of drainage strips, and each of the drainage strips is symmetrically distributed at intervals on the cover plate body.

3. A bearing cover plate according to claim 2, It is characterized in that Each of the drainage strips comprises two single drainage strips, and the two single drainage strips are arranged to intersect each other; and each of the drainage strips is V-shaped in horizontal projection.

4. A bearing cover plate according to any one of claims 1 to 3, It is characterized in that The water retaining mechanism further comprises a retaining platform component arranged on the cover plate body; the retaining platform component comprises a water retaining ring rib; the water retaining ring rib is arranged at the edge of the assembly hole.

5. A bearing cover plate according to claim 4, It is characterized in that The retaining platform component also includes a transition frustum arranged on the cover plate body, and the transition frustum extends from a side of the water retaining ring rib away from the assembly hole to a side away from the sleeve assembly hole.

6. A bearing cover plate according to claim 5, It is characterized in that The transition truncated cone has a flow guide slope at one end away from the water retaining ring rib.

7. A bearing cover plate according to claim 5, It is characterized in that The transition cone is distributed in the area between the drainage component and the water retaining ring rib; the drainage strips are distributed around the transition cone.

8. A bearing cover plate according to claim 1, It is characterized in that The cover plate body is provided with a positioning notch.

9. A bearing cover plate according to claim 1, It is characterized in that The cover plate body is provided with a mounting and fixing hole.

10. A generator assembly, It is characterized in that It comprises the bearing cover plate as described in any one of claims 4 to 7; the inner diameter of the water retaining ring rib on the bearing cover plate is larger than the outer diameter of the inner ring of the bearing adjacent to the bearing cover plate.

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