Bearing end plate

Abstract

The utility model provides a bearing end plate. The bearing end plate comprises an inner bearing end plate, an outer bearing end plate and a sealing device. A bearing is supported inside the inner bearing end plate in the radial direction. An outer bearing end plate is located on the axial outer side of the inner bearing end plate and detachably installed on the inner bearing end plate, and a shaft sealing piece is installed on the radial inner portion of the outer bearing end plate. A sealing device is arranged between the inner bearing end plate and the outer bearing end plate. By the adoption of the bearing end plate, the operation process of replacing a shaft sealing piece can be simplified, the operation time is shortened, and meanwhile a shaft and a pump can be protected against damage.

Description

Technical Field

[0001] The utility model relates to mechanical parts, in particular to a split bearing end plate. Background Art

[0002] The main function of the shaft seal (also called shaft seal, oil seal or lip seal) is to prevent the oil inside the pump from leaking to the outside, and also to prevent external contaminants from entering the pump. It is essential to keep the pump clean and extend its service life. The bearing provides support for the shaft of the pump, can withstand high loads, reduce friction and wear on the shaft, and ensure stable operation of the pump. The bearing end plate fixes the bearing and keeps the bearing in place. The shaft seal can only be replaced by removing the bearing end plate.

[0003] After long-term use or after a durability test, the shaft seal may have the risk of leakage and / or wear, for example, and thus may need to be replaced.

[0004] Before removing the shaft seal, it is usually necessary to remove some related parts. The high-pressure assembly and the tappet body are among these parts that need to be removed. This is mainly because the elastic element between the two will exert a large force on the rotating shaft. Finally, the bearing end plate needs to be removed.

[0005] The bearing end plate is usually an integral component. When the shaft seal needs to be replaced, the bearing end plate needs to be removed. In addition, some bearing end plates are often formed as an integral component with the outer ring of the bearing, so not only will there be great resistance during removal, but after being removed, the bearing will not be able to support the force on the shaft, which will cause damage to the shaft and even the pump body. In order to remove the bearing end plate, these surrounding components also need to be removed, so the removal process is not only time-consuming but also requires the use of special tools.

[0006] Therefore, there is a need in the art for a solution to facilitate replacement of shaft seals. Utility Model Content

[0007] The technical problem to be solved by the utility model is to simplify the replacement process of the shaft sealing element.

[0008] In order to solve the above technical problems, the utility model provides a bearing end plate. The bearing end plate comprises an inner bearing end plate, an outer bearing end plate and a sealing device. A bearing is supported radially inwardly of the inner bearing end plate. The outer bearing end plate is located axially outwardly of the inner bearing end plate and is detachably mounted on the inner bearing end plate, and a shaft seal is mounted radially inwardly of the outer bearing end plate. The sealing device is arranged between the inner bearing end plate and the outer bearing end plate.

[0009] According to a preferred embodiment of the present utility model, the outer bearing end plate is fixed to the inner bearing end plate by a plurality of screws.

[0010] According to a preferred embodiment of the utility model, a groove is provided on the mating end surfaces of the inner bearing end plate and the outer bearing end plate, along one of the inner circumferences of the inner bearing end plate and the outer bearing end plate, and a flange is provided along the other of the inner circumferences of the inner bearing end plate and the outer bearing end plate, and the flange is accommodated in the groove in a shape-fitting manner.

[0011] According to a preferred embodiment of the utility model, the flange is a boss extending axially on the inner periphery of one of the inner bearing end plate and the outer bearing end plate, and the groove is an expansion groove expanding radially on the inner periphery of the other of the inner bearing end plate and the outer bearing end plate.

[0012] According to a preferred embodiment of the utility model, the sealing device is an annular sealing ring.

[0013] According to a preferred embodiment of the utility model, threads are provided on the outer peripheral side of the flange and on the side of the groove that cooperates with the outer peripheral side of the flange, so that the outer bearing end plate and the inner bearing end plate are screwed together through the threads.

[0014] According to a preferred embodiment of the present utility model, the sealing device is a sealant applied on the thread.

[0015] According to a preferred embodiment of the present utility model, the shaft seal is a rotating shaft lip seal.

[0016] According to a preferred embodiment of the present invention, the inner bearing end plate is made of steel.

[0017] According to a preferred embodiment of the present invention, the inner bearing end plate and the outer bearing end plate are made of the same or different materials.

[0018] By adopting the bearing end plate of the utility model, the shaft seal can be easily replaced while maintaining the existing customer interface unchanged, thereby simplifying the operation steps, saving operation time, and protecting the pump or the rotating shaft from damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to enable those skilled in the art to more fully understand the present invention, the specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] Figure 1 It is an assembly cross-sectional view of a bearing end plate of an embodiment of the utility model;

[0021] Figure 2 is based on Figure 1 A perspective view of an inner bearing end plate of the bearing end plates of the illustrated embodiment; and

[0022] Figure 3 is based on Figure 1 A perspective view of an outer bearing end plate of the bearing end plates of the illustrated embodiment. DETAILED DESCRIPTION

[0023] In order to make the present invention clearer, a specific embodiment of the present invention is described in detail below with reference to the accompanying drawings, but the present invention is not limited to this embodiment.

[0024] According to the inventive concept of the utility model, the integral bearing end plate is configured as two parts, the inner bearing end plate and the outer bearing end plate, so that the shaft seal is located in the outer bearing end plate, so when the shaft seal needs to be replaced, only the outer bearing end plate needs to be removed. The bearing is located in the inner bearing end plate, and when the shaft seal is replaced, the inner bearing end plate does not need to be removed, so the shaft and the bearing can continue to be maintained to protect the shaft and the pump from damage.

[0025] Combine the following Figures 1 to 3 A specific embodiment of the present invention is described in detail, wherein Figure 1 This is a cross-sectional view of a split bearing end plate 1 of an embodiment of the utility model. Figure 2 is a three-dimensional view of the inner bearing end plate 11 of this embodiment, and Figure 3 FIG. 1 is a perspective view of the outer bearing end plate 12 of this embodiment. Figures 1 to 3 As shown, the split bearing end plate 1 includes an inner bearing end plate 11 and an outer bearing end plate 12 which are separated along the axial direction. The inner bearing end plate 11 is assembled to the pump housing, and the outer bearing end plate 12 is located axially outside the inner bearing end plate 12 relative to the pump body. The inner bearing end plate 11 and the outer bearing end plate 12 are detachably fixed together. For example, by Figure 1 The shaft seal 15 is usually a rotary shaft lip seal. The shaft seal 15 is accommodated in the radial inner part of the outer bearing end plate 12. When it needs to be replaced, the outer bearing end plate 12 can be removed from the inner bearing end plate 11. In addition, the bearing 16 is located in the radial inner part of the inner bearing end plate 11. For example, Figure 1 As shown, the inner bearing end plate 11 is axially supported by a boss formed on the inner periphery of the inner bearing end plate 11. Therefore, when replacing the shaft seal 15, only the outer bearing end plate 12 needs to be disassembled, and the inner bearing end plate 11 is not disassembled and still holds the bearing 16, so that the shaft subjected to the force applied by the high-pressure component can be supported, thereby protecting the shaft, thereby protecting the pump body from damage.

[0026] according to Figures 1 to 3 In the embodiment shown, the inner bearing end plate 11 and the outer bearing end plate 12 are connected by a concave-convex structure (from Figure 1This concave-convex structure can not only assist in guiding when installing the outer bearing end plate 12 to the inner bearing end plate 11, so that the outer bearing end plate 12 can be accurately matched to the inner bearing end plate 11, but also improve the sealing effect through the tortuous connection end surface.

[0027] according to Figures 1 to 3 In the embodiment shown, a sealing device is provided on the mating surface between the inner bearing end plate 11 and the outer bearing end plate 12, for example Figure 1 The sealing ring 14 is shown. The sealing ring 14 is preferably arranged on the inner side of the screw 13, that is, on the side closer to the axis X of the rotating shaft, but the specific arrangement position of the sealing device is not limited. Figure 1 In the illustrated embodiment, the sealing ring 14 is arranged at the corners on the concave-convex matching surfaces of the inner bearing end plate 11 and the outer bearing end plate 12 .

[0028] As mentioned above, combined Figures 1 to 3 A specific embodiment of the present invention is generally described, but the present invention is not limited thereto. Various modifications may be made based on the inventive concept of the present invention, and these modifications may constitute one or more modified embodiments of the present invention alone or in combination with each other.

[0029] Preferably, Figure 1 It is shown that the inner bearing end plate 11 and the outer bearing end plate 12 are detachably fixed together by screws 13, but any detachable fixing method is not limited. For example, the inner bearing end plate 11 and the outer bearing end plate 12 can be snapped together. Alternatively, the inner bearing end plate 11 and the outer bearing end plate 12 can be screwed together by threads.

[0030] Figure 1 The inner bearing end plate 11 and the outer bearing end plate 12 shown in the figure cooperate with each other through the concave-convex structure. Figures 2 to 3 As shown, the inner circumference of the inner bearing end plate 11 is provided with a groove 111 on the side that cooperates with the outer bearing end plate 12, and the groove 111 is an expansion groove that expands the inner diameter of the inner bearing end plate 11. The inner circumference of the outer bearing end plate 12 is provided with a flange 121 on the side that cooperates with the inner bearing end plate 11, and the flange 121 is a circumferential flange extending from the inner circumference of the outer bearing end plate 12 and along the axial direction of the outer bearing end plate 12. The depth of the groove 111 of the inner bearing end plate 11 is consistent with the height of the flange 121 of the outer bearing end plate 12, so that the flange 121 of the outer bearing end plate 12 is just received in the groove 111 of the inner bearing end plate 11. In the process of the flange 121 of the outer bearing end plate 12 being inserted into the groove 111 of the inner bearing end plate 11, the flange 121 also plays a guiding role. Optionally, the arrangement positions of the groove and the flange may be interchanged, that is, the groove may be arranged on the outer bearing end plate 12 , and the flange may be arranged on the inner bearing end plate 11 .

[0031] In addition, the thickness of the shaft seal 15 along the axial direction X is preferably equal to or less than the thickness of the inner circumferential surface of the outer bearing end plate 12 along the axial direction X, thereby enabling the shaft seal 15 to be completely accommodated in the outer bearing end plate 12, thereby ensuring that the shaft seal 15 can be replaced by disassembling the outer bearing end plate 12.

[0032] like Figure 1 As shown, a boss for axially supporting the bearing 16 is provided on the bearing side of the inner bearing end plate 11 so that after the outer bearing end plate 12 is removed, the inner bearing end plate 11 is not affected and still supports the bearing 16, thereby protecting the shaft and the pump from damage.

[0033] However, the inner bearing end plate 11 and the outer bearing end plate 12 may also be butted against each other through flat end surfaces, that is, the existing integrated bearing end plate is separated into the inner bearing end plate 11 and the outer bearing end plate 12 along a plane perpendicular to the axis X of the rotating shaft, and then the two are fixed together, for example, by screws. In this case, it may be considered to provide guide components on the mating end surfaces of the inner bearing end plate 11 and the outer bearing end plate 12, such as guide pins and guide grooves, respectively, to ensure the alignment accuracy when the two are installed together.

[0034] As an optional way to detachably fix the inner bearing end plate 11 and the outer bearing end plate 12 together, a thread may be provided on the concave-convex structure, thereby directly screwing the inner bearing end plate 11 and the outer bearing end plate 12 together. Specifically, a thread may be provided on the outer peripheral side of the groove 111 of the inner bearing end plate 11, and a matching thread may be correspondingly provided on the outer peripheral side of the flange 121 of the outer bearing end plate 12, thereby screwing the outer bearing end plate 12 to the inner bearing end plate 11 by means of a threaded connection. In this case, screws may be used or not. As a preferred embodiment, sealing between the two may be achieved by applying sealant on the thread, that is, the sealing device may be a sealant.

[0035] Regardless of which connection method is used, the sealing between the inner bearing end plate 11 and the outer bearing end plate 12 must be ensured.

[0036] according to Figures 1 to 3 In an embodiment, the sealing device between the inner bearing end plate 11 and the outer bearing end plate 12 is a sealing ring 14, which is a preferred embodiment. The material of the sealing ring 14 is preferably rubber. According to another preferred embodiment, a sealant can be applied between the inner bearing end plate 11 and the outer bearing end plate 12. The sealant can be applied to the entire surface of the inner bearing end plate 11 and the outer bearing end plate 12 that cooperate with each other or only to a portion of the surface. In an embodiment in which the inner bearing end plate 11 and the outer bearing end plate 12 are screwed together by threads, the sealant is preferably applied to the threads.

[0037] The inner bearing end plate 11 and the outer bearing end plate 12 are usually made of metal materials. Preferably, they are made of steel, such as 45 steel. However, as a split design, the inner bearing end plate 11 and the outer bearing end plate 12 can be made of different materials to reduce the overall component cost while meeting the working conditions. For example, the inner bearing end plate 11 can be made of high-hardness bearing steel, while the outer bearing end plate 12 can be made of other materials with moderate hardness.

[0038] With the split bearing end plate of the utility model, when the shaft seal needs to be replaced, it is only necessary to remove the pump from the engine and then remove the outer bearing end plate. The customer interface is consistent with the existing bearing end plate, and no changes are required to other related structures of the existing bearing end plate.

[0039] The split bearing end plate of the utility model comprises two parts, an inner bearing end plate and an outer bearing end plate, which are detachably fixed. The bearing is installed in the inner bearing end plate, and the shaft seal is installed in the outer bearing end plate. When the shaft seal needs to be replaced, it is only necessary to remove the outer bearing end plate from the inner bearing end plate. Other components are not affected, and the customer interface remains unchanged. In this way, not only can the shaft seal be easily replaced, but also because other components are not affected and the inner bearing end plate can still maintain the rotating shaft, damage to the shaft or pump caused by the action of the high-pressure component is prevented, thereby protecting the shaft and conveniently replacing the shaft seal.

[0040] The above specific embodiments are only used to illustrate the present invention, but not to limit the present invention. Those skilled in the art can make various modifications and variations without departing from the inventive concept of the present invention, so all equivalent technical solutions fall within the protection scope of the present invention, and the protection scope of the present invention is defined by the attached claims.

Claims

1. A bearing end plate (1), characterized in that: The bearing end plate (1) comprises: An inner bearing end plate (11) having a bearing (16) supported radially inwardly thereof; an outer bearing end plate (12) which is located axially outside the inner bearing end plate (11) and is detachably mounted on the inner bearing end plate (11), and a shaft seal (15) is mounted radially inside the outer bearing end plate (12); and A sealing device is arranged between the inner bearing end plate (11) and the outer bearing end plate (12).

2. The bearing end plate (1) according to claim 1, characterized in that: The outer bearing end plate (12) is fixed to the inner bearing end plate (11) by a plurality of screws (13).

3. The bearing end plate (1) according to claim 1, characterized in that: A groove (111) is provided on the mating end surfaces of the inner bearing end plate (11) and the outer bearing end plate (12), along one of the inner circumferences of the inner bearing end plate (11) and the outer bearing end plate (12), and a flange (121) is provided along the other of the inner circumferences of the inner bearing end plate (11) and the outer bearing end plate (12), and the flange (121) is accommodated in the groove (111) in a shape-fitting manner.

4. The bearing end plate (1) according to claim 3, characterized in that: The flange (121) is a boss extending axially on the inner periphery of one of the inner bearing end plate (11) and the outer bearing end plate (12), and the groove (111) is an expansion groove expanding radially on the inner periphery of the other of the inner bearing end plate (11) and the outer bearing end plate (12).

5. The bearing end plate (1) according to any one of claims 1 to 4, characterized in that: The sealing device is an annular sealing ring (14).

6. The bearing end plate (1) according to claim 4, characterized in that: Threads are provided on the outer peripheral side of the flange (121) and on the side of the groove (111) that cooperates with the outer peripheral side of the flange (121), so that the outer bearing end plate (12) and the inner bearing end plate (11) are screwed together through the threads.

7. The bearing end plate (1) according to claim 6, characterized in that The sealing device is a sealant applied on the thread.

8. The bearing end plate (1) according to any one of claims 1 to 4, characterized in that: The shaft seal (15) is a rotating shaft lip seal.

9. The bearing end plate (1) according to any one of claims 1 to 4, characterized in that: The inner bearing end plate (11) is made of steel.

10. The bearing end plate (1) according to any one of claims 1 to 4, characterized in that: The inner bearing end plate (11) and the outer bearing end plate (12) are made of the same or different materials.

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