CN215762818U - Bearing bush with repairable structure - Google Patents
Bearing bush with repairable structure Download PDFInfo
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- CN215762818U CN215762818U CN202121773654.XU CN202121773654U CN215762818U CN 215762818 U CN215762818 U CN 215762818U CN 202121773654 U CN202121773654 U CN 202121773654U CN 215762818 U CN215762818 U CN 215762818U
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Abstract
The utility model discloses a bearing bush with a repairable structure, and belongs to the technical field of bearing bushes. The bearing bush comprises an upper bearing bush, a lower bearing bush and a fixing part, wherein the upper bearing bush and the lower bearing bush are of semicircular cylindrical structures, and the upper bearing bush and the lower bearing bush are spliced through the fixing part to form the circular cylindrical bearing bush; mounting parts are arranged on two sides of the end part of the upper bearing bush, first positioning holes are formed in the mounting parts, and second positioning holes corresponding to the first positioning holes are formed in the plane of the upper end of the lower bearing bush; the fixing part is arranged in the first positioning hole and the second positioning hole; alloy layers are arranged on the inner walls of the upper bearing bush and the lower bearing bush. The inner wall of the bearing bush is provided with the connecting groove for connecting the alloy layer, so that the problem that the alloy layer is too thin and the connecting strength of the bearing bush is not enough is solved, a surfacing process can be adopted to replace a recasting processing process in the repair of slight abrasion, the processing cost is saved, and the repair efficiency is improved.
Description
Technical Field
The utility model relates to the technical field of bearing bush repair, in particular to a bearing bush with a repairable structure.
Background
The bearing bush is the part of the sliding bearing contacted with the shaft neck, is in the shape of a tile-shaped semi-cylindrical surface and is generally made of wear-resistant materials such as bronze, antifriction alloy and the like. After the bearing bush is used, the alloy part of the bearing bush is often damaged due to friction, so that the need of repair is often met. Usually, the alloy part of the bearing bush can only be completely removed from the alloy layer on the inner wall of the bearing bush, and then the bearing bush is repaired in a pouring mode, so that a large amount of repairing time is consumed, and more alloy materials are consumed.
When the slightly worn bearing bush is repaired, the repairing effect is not ideal because the connecting strength of the bearing bush body and the alloy part is not enough. Therefore, how to realize that the bearing bush has repair conditions in light abrasion by improving the structure of the bearing bush becomes a technical problem which needs to be solved urgently.
Through retrieval, the prior art discloses a welding repair method of a tin-based bearing alloy bearing bush (application No. 201420447039.3, application date: 2014 8/8), the application provides a bearing bush, the bearing bush comprises an arc-shaped bearing bush body, the bearing bush body comprises a plurality of oil grooves, oil inlet holes and positioning convex grooves, the oil grooves are arranged on the surface of the bearing bush body at intervals in parallel, the oil inlet holes penetrate through the bearing bush body and are arranged in the oil grooves, the positioning flanges are arranged at two ends of the bearing bush body, the bearing bush body comprises an arc-shaped steel backing layer and an antifriction layer, and the antifriction layer is attached to and covered on the inner surface of the steel backing layer and is connected with the steel backing layer in an integrated forming mode.
The bearing bush provided by the application has the advantages of strong bearing capacity, strong wear resistance, high heat resistance, good heat conductivity, accurate positioning and the like. However, the wear-reducing layer where the alloy part is located in the application adopts a design of being integrally formed with the bearing bush steel backing, the steel backing and the wear-reducing layer are made of different materials, the strength of the connecting position of the two layers can be weakened, and the bearing bush can be only poured again even if the wear-reducing layer is slightly worn.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The utility model aims to overcome the defect that a bearing bush in the prior art is not easy to repair when an alloy part is slightly worn, and provides a bearing bush with a repairable structure.
2. Technical scheme
In order to achieve the purpose, the technical scheme provided by the utility model is as follows:
the utility model discloses a bearing bush with a repairable structure, which comprises an upper bearing bush, a lower bearing bush and a fixing part, wherein the upper bearing bush and the lower bearing bush are of semicircular cylindrical structures, and the upper bearing bush and the lower bearing bush are spliced through the fixing part to form the circular cylindrical bearing bush;
mounting parts are arranged on two sides of the end part of the upper bearing bush, first positioning holes are formed in the mounting parts, and second positioning holes corresponding to the first positioning holes are formed in the plane of the upper end of the lower bearing bush; the fixing part is arranged in the first positioning hole and the second positioning hole and is used for fixedly splicing the upper bearing bush and the lower bearing bush;
alloy layers are arranged on the inner walls of the upper bearing bush and the lower bearing bush, and the alloy layers are of repairable structures;
the inner walls of the upper bearing bush and the lower bearing bush are provided with connecting grooves along the axial direction, and the width of the notches of the connecting grooves is smaller than that of the groove bottoms, so that the alloy layer and the connecting grooves form positioning fit.
Further, the width of the connecting groove gradually decreases from the notch to the groove bottom.
Furthermore, the connecting groove is provided with a plurality of, and is a plurality of connecting groove is central symmetry around the axis of axle bush and distributes.
Further, the depth of the connecting groove is set to be 4-5 mm.
Further, an oil groove is formed in the bottom of the inner side of the lower bearing bush and extends along the length direction of the lower bearing bush.
Further, the fixing member is provided as a bolt and/or a pin.
3. Advantageous effects
Compared with the prior art, the technical scheme provided by the utility model has the following beneficial effects:
(1) the utility model relates to a bearing bush repairing structure which comprises an upper bearing bush, a lower bearing bush and a fixing part, wherein the upper bearing bush and the lower bearing bush are of semicircular cylindrical structures, and the upper bearing bush and the lower bearing bush are spliced through a positioning part to form the circular cylindrical bearing bush. The installation parts are arranged on two sides of the end part of the upper bearing bush, first positioning holes are formed in the installation parts, second positioning holes corresponding to the first positioning holes are formed in the plane of the upper end of the lower bearing bush, and the fixing part is installed in the first positioning holes and the second positioning holes. The inner wall of the bearing bush is provided with the connecting groove for connecting with the alloy layer, so that the problem that the alloy layer is too thin and the connecting strength of the bearing bush is not enough is solved, and the alloy layer formed after surfacing is not easy to fall off. In the repair of slight abrasion, the bearing bush can adopt a surfacing process to replace a recasting processing process, so that the processing cost is saved and the repair efficiency is improved.
(2) According to the bearing bush repairing structure, the width of the connecting groove is gradually reduced from the groove opening to the groove bottom, so that the situation that the width of the groove body is suddenly changed to be matched with the alloy layer to generate two or even a plurality of connecting surfaces is avoided, the internal stress of the alloy layer is favorably released in the repairing process, and the connecting strength of the alloy layer is improved. In addition, the processing difficulty of the connecting groove can be obviously reduced, and the process cost is reduced.
Drawings
FIG. 1 is a cross-sectional view of a repair construction of the utility model.
The reference numerals in the schematic drawings illustrate:
1. an upper bearing bush; 10. an installation part; 11. a first positioning hole; 2. a lower bearing bush; 20. a second positioning hole; 3. a fixing member; 4. An alloy layer; 5. connecting grooves; 6. an oil groove.
Detailed Description
For a further understanding of the utility model, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples.
The structure, proportion, size and the like shown in the drawings are only used for matching with the content disclosed in the specification, so that the person skilled in the art can understand and read the description, and the description is not used for limiting the limit condition of the implementation of the utility model, so the method has no technical essence, and any structural modification, proportion relation change or size adjustment still falls within the scope of the technical content disclosed by the utility model without affecting the effect and the achievable purpose of the utility model. In addition, the terms "upper", "lower", "left", "right" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.
Example 1
The bearing shell is a component used for connecting a sliding bearing and a shaft journal, and an alloy layer at the joint of the bearing shell can be abraded to a certain extent in the long-term use process. When the wear degree of the alloy layer is large, the alloy layer of the bearing bush needs to be completely machined, and then the alloy layer is cast again; when the alloy layer is worn to a lesser extent, the work time is wasted if the alloy layer is poured again.
The bearing bush generally comprises two pieces of structures, namely an upper bearing bush and a lower bearing bush; when the diameter of the inner wall of the bearing bush is too large, the bearing bush can also be formed by a three-piece structure, and the radian of the projection of the outer edge of each bearing bush on the end face is 120 degrees. The bearing bush used in the embodiment is a bearing bush with two-piece structure, namely an upper bearing bush and a lower bearing bush, and the repairable structure of the bearing bush is an alloy layer of the bearing bush.
In order to replace the mode of recasting for processing, the method can be matched with a build-up welding mode for repairing the worn alloy layer. It should be noted that, since the thickness of the alloy layer 4 is small, the alloy layer 4 needs to be cut to remove the oil stain layer before the overlay welding, and thus, when repairing the bush integrally formed with the alloy layer 4, the alloy layer 4 is too thin and the connection strength with the bush is not sufficient, so that the alloy layer is likely to partially fall off after the overlay welding. Therefore, in the embodiment, the product defects possibly generated by the surfacing process are considered, and the alloy layer 4 on the bearing shell can be repaired by using the surfacing process by increasing the connection strength of the alloy layer and the bearing shell.
As shown in fig. 1, the bearing shell used in this embodiment is a two-piece bearing shell structure, and the two-piece bearing shell is firstly fixed to an integrated structure and then repaired. The embodiment provides a bearing bush with a repairable structure, which comprises an upper bearing bush 1, a lower bearing bush 2 and a fixing part 3, wherein the upper bearing bush 1 and the lower bearing bush 2 are both in a semicircular column structure, the upper bearing bush 1 and the lower bearing bush 2 are spliced through a positioning part to form a circular column-shaped bearing bush, namely, the upper bearing bush 1 and the lower bearing bush 2 are connected into a whole along the axial direction to form a circular column structure of the bearing bush. The installation parts 10 are arranged on two sides of the end part of the upper bearing bush 1, specifically, groove bodies are axially arranged on two arc side surfaces of the upper bearing bush 1, the bottom of each groove body forms a groove bottom, and the plane of each groove bottom is the installation part 10 in the embodiment. All seted up first locating hole 11 on the installation department 10, the second locating hole 20 corresponding with first locating hole 11 is seted up along axial upper end plane to lower bearing bush 2, and fixed part 3 installs in first locating hole 11 and second locating hole 20 for fixed upper bearing bush 1 and the lower bearing bush 2 of concatenation to form the body structure of bearing bush. The inner walls of the upper bearing bush 1 and the lower bearing bush 2 are provided with an alloy layer 4 with a certain thickness, the thickness of the alloy layer 4 is matched with the size of the bearing bush, and the alloy layer 4 is of a repairable structure.
In the embodiment, the inner walls of the upper bearing bush 1 and the lower bearing bush 2 are provided with the connecting groove 5 along the axial direction, the connecting groove 5 is used for connecting the alloy layer 4 on the bearing bush, and the connecting groove 5 can increase the contact area between the alloy layer 4 and the inner wall of the bearing bush, so that the connecting strength between the alloy layer 4 and the inner wall of the bearing bush is improved. The connecting groove 5 can be provided with a plurality of, and a plurality of connecting grooves 5 are central symmetry distribution around the axis of axle bush to form stable connection structure.
The width of the groove bottom of the connecting groove 5 in the embodiment is larger than the width of the groove opening, the groove opening is the opening of the connecting groove 5 on the inner wall of the bearing bush, the bottom of the connecting groove 5 is opposite to the groove opening, and the connecting groove 5 with the shape is arranged to form a certain buckling structure with the connecting groove 5 when the alloy layer 4 is filled in the connecting groove 5, so that the connecting strength of the alloy layer 4 and the bearing bush is increased.
In order to further improve the connection strength of the connection groove 5 and the alloy layer 4, the width of the connection groove 5 in the present embodiment gradually decreases from the notch to the groove bottom. The connecting groove 5 arranged in this way avoids the sudden change of the width of the groove body and the matching of two or even more connecting surfaces with the alloy layer 4. The temperature is higher when the alloy layer 4 is repaired by the surfacing process and is normal temperature after cooling, and if the connecting groove 5 is matched with the alloy layer 4 to form a plurality of surfaces, the internal stress of the alloy layer 4 is not released, so that the connecting strength of the alloy layer 4 is reduced. In addition, for the connecting groove 5 with gradually changed groove body width, the processing difficulty is obviously reduced, and the process cost is reduced.
The connecting groove 5 is used as a connecting part between the bearing bush body and the alloy layer 4, and the depth of the groove body ensures the connecting strength between the alloy layer 4 and the bearing bush. However, the excessive depth will damage the tile shaft body structure and consume too much alloy layer material, thereby causing a great increase in production cost. In this embodiment, the depth of the connecting groove 5 is set to 4 mm-5 mm, so that the amount of alloy in the alloy layer 4 is reduced to the maximum extent on the premise of ensuring the connection strength, thereby reducing the processing cost.
When the bearing bush is used, impurities such as oil stains are attached to the alloy layer 4, so that the abrasion of the alloy layer 4 is increased, and the service life of the bearing bush is seriously influenced. For impurity such as holding greasy dirt, oil groove 6 has been seted up to this embodiment in the inboard bottom of lower axle bush 2, and the oil groove extends along 2 length direction of lower axle bush, and length direction is the axial of axle bush promptly. The position that sets up oil groove 6 like this can make impurity such as greasy dirt get into oil groove 6 through the curved surface structure of lower bearing bush 2 inner wall, has increased oil groove 6's practicality.
In this embodiment, the upper bearing bush 1 is connected with the lower bearing bush 2 through the fixing part 3, the fixing part 3 is arranged to be a bolt or a pin, and the bolt and the pin are used simultaneously, the connection fixing effect that can be achieved through the bolt connection is better, but the bolt fixing needs to set a threaded hole on the bearing bush, namely, the second positioning hole 20 and the second positioning hole 20 are threaded holes, the processing of the threaded hole is more time-consuming than the pin hole, the precision requirement is higher, and the positioning effect of the pin is better than that of the bolt.
Preferably, in the present embodiment, the first positioning hole 11 formed in one side of the upper shell 1 is a threaded hole, the first positioning hole 11 formed in the other side is a pin hole, and the second positioning hole 20 is provided as a threaded hole and a pin hole corresponding to the first positioning hole 11. The advantage that is provided with screw hole and pinhole simultaneously is, can carry out preliminary location with the bolt earlier, and it is more convenient when squeezing into the pin again to the location effect of pin is better than the bolt, thereby when guaranteeing upper bearing bush 1 and 2 joint strength of lower bearing bush, has increased the efficiency of bolt installation.
It should be noted that the upper bearing shell 1 and the lower bearing shell 2 are matched along the axial direction, so that the upper bearing shell 1 is provided with first positioning holes 11 at two axial ends, and correspondingly, the lower bearing shell 2 is provided with second positioning holes 20 at two axial ends. Since the connection of the two axial ends of the upper and lower bearing shells 1 and 2 is the same, the present embodiment will be described only with respect to the connection of one end of the upper and lower bearing shells 1 and 2.
Example 2
For large bearing bushes with large inner wall diameter sizes, the bearing bushes can also be composed of three structures, the radian of the projection of the outer edge of each bearing bush on the end face is 120 degrees, and for the bearing bushes with the three structures, the modes of the fixing pieces and the positioning holes can refer to the bearing bushes with the two structures when the splicing structures of the bearing bushes are composed. But the position of the mounting part for forming the positioning hole is different from that of the bearing bush with a two-piece structure.
The embodiment is still described with respect to the connection structure of one axial end of the bearing shell, and the connection structure of the other end of the bearing shell may adopt the same or similar structure. The bearing bush of the embodiment is provided with three pieces of structures, and three pairs of connecting surfaces can be generated during connection, so that three mounting parts respectively correspond to the three pairs of connecting surfaces.
The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the utility model, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the utility model.
Claims (6)
1. The utility model provides a axle bush with but repair structure which characterized in that: the bearing bush comprises an upper bearing bush, a lower bearing bush and a fixing part, wherein the upper bearing bush and the lower bearing bush are of semicircular cylindrical structures, and the upper bearing bush and the lower bearing bush are spliced through the fixing part to form the circular cylindrical bearing bush;
mounting parts are arranged on two sides of the end part of the upper bearing bush, first positioning holes are formed in the mounting parts, and second positioning holes corresponding to the first positioning holes are formed in the plane of the upper end of the lower bearing bush; the fixing part is arranged in the first positioning hole and the second positioning hole and is used for fixedly splicing the upper bearing bush and the lower bearing bush;
alloy layers are arranged on the inner walls of the upper bearing bush and the lower bearing bush, and the alloy layers are of repairable structures;
the inner walls of the upper bearing bush and the lower bearing bush are provided with connecting grooves along the axial direction, and the width of the notches of the connecting grooves is smaller than that of the groove bottoms, so that the alloy layer and the connecting grooves form positioning fit.
2. A bearing shell with a repairable structure according to claim 1, wherein: the width of the connecting groove gradually decreases from the notch to the groove bottom.
3. A bearing shell with a repairable structure according to claim 2, wherein: the spread groove is provided with a plurality ofly, and is a plurality ofly the spread groove is central symmetry around the axis of axle bush and distributes.
4. A bearing shell with a repairable structure according to claim 3, wherein: the depth of the connecting groove is set to be 4-5 mm.
5. A bearing shell with a repairable structure according to claim 1, wherein: an oil groove is formed in the bottom of the inner side of the lower bearing bush and extends along the length direction of the lower bearing bush.
6. A bearing shell with a repairable structure according to claim 1, wherein: the fixing part is provided as a bolt and/or a pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121773654.XU CN215762818U (en) | 2021-07-30 | 2021-07-30 | Bearing bush with repairable structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121773654.XU CN215762818U (en) | 2021-07-30 | 2021-07-30 | Bearing bush with repairable structure |
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| Publication Number | Publication Date |
|---|---|
| CN215762818U true CN215762818U (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121773654.XU Active CN215762818U (en) | 2021-07-30 | 2021-07-30 | Bearing bush with repairable structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030958A (en) * | 2022-06-06 | 2022-09-09 | 浙江江南石化机械有限公司 | High-density melting pump silver bush and processing method and equipment thereof |
-
2021
- 2021-07-30 CN CN202121773654.XU patent/CN215762818U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115030958A (en) * | 2022-06-06 | 2022-09-09 | 浙江江南石化机械有限公司 | High-density melting pump silver bush and processing method and equipment thereof |
| CN115030958B (en) * | 2022-06-06 | 2024-02-13 | 浙江江南石化机械有限公司 | High-density melting pump silver bearing bush and processing method and equipment thereof |
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