CN114803369A

CN114803369A - Rolling element with stable sealing performance

Info

Publication number: CN114803369A
Application number: CN202210405022.0A
Authority: CN
Inventors: 张晓峰; 马兰英; 亓鹏
Original assignee: Shandong Lingxiyuan Technology Development Co ltd
Current assignee: Shandong Lingxiyuan Technology Development Co ltd
Priority date: 2022-04-18
Filing date: 2022-04-18
Publication date: 2022-07-29

Abstract

The application relates to the technical field of material conveying, in particular to a rolling body with stable sealing performance, which comprises a shell, a ball and an elastic sealing element. The shell comprises a shell body and a bottom cover, the shell body is provided with an installation cavity, the bottom cover is inserted into the bottom of the shell body in an interference mode in the vertical direction, and the bottom cover is provided with an installation channel communicated with the installation cavity; the ball penetrates into the mounting cavity and the mounting channel, and part of the ball extends out of the mounting channel; the elastic sealing element comprises a wear-resisting ring, the wear-resisting ring is arranged in the mounting channel, and the bottom cover extrudes the wear-resisting ring on the outer surface of the ball. The rolling element of this application, the binding power that the bottom was applyed to wear-resisting ring is more balanced, can improve the reliability of wear-resisting ring and ball butt, and then improves the sealed stability of wear-resisting ring, reduces impurity and gets into installation passageway and installation intracavity, improves the rolling smoothness nature of ball, reduces the phenomenon that the ball blocked and takes place.

Description

Rolling element with stable sealing performance

Technical Field

The application relates to the technical field of material conveying, in particular to a rolling body with stable sealing performance.

Background

The applicant has developed a rolling element comprising a housing and a ball mounted in the housing and having a bottom side partially protruding from the housing, the rolling element being capable of rolling movement by the ball. The rolling body can be applied to a material conveying device, for example, the rolling body can be applied to a scraper conveyor, the scraper conveyor is a conveying device for conveying coal and materials, generally comprises a chain and a scraper arranged on the chain, the chain can drive the scraper to move along a chute, and the rolling body can be arranged at the bottom of the scraper so as to reduce the running resistance of the scraper. However, the scraper conveyor is usually used in a coal mine and other scenes with poor environmental cleanliness, and the chute usually contains impurities such as coal dust, sludge and the like. The scraper blade is at the operation in-process, and impurity gets into in the shell easily, and the impurity of piling up in the shell can increase the running resistance of ball, makes the ball block and is difficult to rotate even.

Disclosure of Invention

In order to solve the technical problem, the application provides a rolling element that leakproofness is stable, and the binding force that the bottom was applyed to wear-resisting ring is more balanced, can improve the reliability of wear-resisting ring with the ball butt, and then improves the sealed stability of wear-resisting ring, reduces impurity entering installation passageway and installation intracavity, the effectual problem that exists among the prior art of having solved.

In order to solve the above problems, the present application provides a rolling element with stable sealing performance, including a housing, balls, and an elastic seal. The shell comprises a shell body and a bottom cover, the shell body is provided with an installation cavity, the bottom cover is inserted into the bottom of the shell body in an interference mode in the vertical direction, and the bottom cover is provided with an installation channel communicated with the installation cavity; the ball penetrates into the mounting cavity and the mounting channel, and part of the ball extends out of the mounting channel; the elastic sealing element comprises a wear-resisting ring, the wear-resisting ring is arranged in the mounting channel, and the bottom cover extrudes the wear-resisting ring on the outer surface of the ball.

Furthermore, the shell body comprises a shell body and a supporting seat arranged on the shell body, the shell body is an elastic shell body, the supporting seat is provided with a supporting surface for supporting balls, and the bottom cover is inserted into the bottom of the elastic shell body in an interference mode in the vertical direction.

Furthermore, the elastic shell body and the supporting seat are integrally cast.

Furthermore, the bottom cover is provided with an annular convex rib protruding outwards, and the inner wall of the elastic shell body is provided with an annular groove for the annular convex rib to be inserted and matched.

Furthermore, the inner wall of the shell body is provided with a limiting boss protruding inwards, and the top of the bottom cover is abutted against the limiting boss.

Further, the top of the bottom cover is provided with a first annular rib extending towards the balls, the bottom of the bottom cover is provided with a second annular rib extending towards the balls, and the first annular rib and the second annular rib clamp the wear-resisting ring.

Further, the wear ring has a partition portion that partitions the ball and the second annular rib.

Furthermore, the elastic sealing element also comprises an elastic ring which is abutted against the wear-resistant ring, and the inner wall of the installation channel supports the elastic ring.

Further, the elastic rings are provided in plurality, and the side wall of the installation passage is protruded toward the balls to form a step, which supports the plurality of elastic rings.

Furthermore, the elastic shell body is a polyurethane shell body.

The beneficial effects of this application lie in, the bottom interference inserts shell body bottom in vertical direction, shell body inner wall laminates in the bottom, thereby produce horizontal restrictive force to the bottom, this restrictive force is applied in the whole side of bottom through the whole inner wall of shell body, the inner wall of bottom installation passageway is again applyed this restrictive force in wear-resisting ring, thereby even extrude the surface at the ball with wear-resisting ring, and then improve the reliability of wear-resisting ring and ball butt, and then improve the sealed stability of wear-resisting ring, reduce external impurity and get into installation passageway and installation intracavity. The rolling element with stable sealing performance effectively solves the problems existing in the prior art.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic perspective view of a rolling element according to an embodiment of the present application.

Fig. 2 is a front view of a rolling element according to an embodiment of the present application.

Fig. 3 is a schematic cross-sectional structure diagram of a rolling element in an embodiment of the present application.

Wherein: 1. a housing; 11. a shell body; 111. a mounting cavity; 112. a housing body; 113. a supporting seat; 114. an annular groove; 115. a limiting boss; 12. a bottom cover; 121. installing a channel; 122. an annular convex rib; 123. a first annular rib; 124. a second annular rib; 125. a step; 2. a ball bearing; 3. an elastomeric seal; 31. a wear ring; 311. a partition portion; 32. an elastic ring.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

It should be noted that in the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and thus the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; either directly or indirectly through intervening media, either internally or in any other relationship. However, the direct connection means that the two bodies are not connected to each other by the intermediate structure but connected to each other by the connecting structure to form a whole. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the present application, as shown in fig. 1 to 3, a rolling element with stable sealing performance is provided, which includes a housing 1, balls 2, and an elastic seal 3. The shell 1 comprises a shell body 11 and a bottom cover 12, wherein the shell body 11 is provided with a mounting cavity 111, the bottom cover 12 is inserted into the bottom of the shell body 11 in a vertical interference mode, and the bottom cover 12 is provided with a mounting channel 121 communicated with the mounting cavity 111; the ball 2 penetrates into the mounting cavity 111 and the mounting channel 121, and part of the ball 2 extends out of the mounting channel 121; the elastic sealing member 3 includes a wear-resistant ring 31, the wear-resistant ring 31 is mounted in the mounting passage 121, and the bottom cover 12 presses the wear-resistant ring 31 against the outer surface of the ball 2.

The utility model provides a rolling element, bottom cover 12 is in the interference of vertical direction and is inserted shell 11 bottom, shell 11 inner wall laminates in bottom cover 12, thereby produce horizontal constraining force to bottom cover 12, this constraining force is applyed in the whole side of bottom cover 12 through the whole inner wall of shell 11, the inner wall of bottom cover 12 installation channel 121 again with this constraining force applys in wear-resisting ring 31, thereby the even surface that extrudes wear-resisting ring 31 at ball 2, and then improve the reliability that wear-resisting ring 31 and ball 2 butt, and then improve the sealed stability of wear-resisting ring. The wear-resistant ring 31 abuts against the ball 2, so that a gap between the inner wall of the mounting channel 121 and the ball 2 can be shielded, and further, the foreign matters entering the mounting channel 121 and the mounting cavity 111 from the gap can be reduced. In addition, impurities are easily attached to the part of the ball 2 extending out of the mounting channel 121, and the impurities can follow the ball 2 to move towards the mounting channel 121 during the rolling process of the ball 2. Wear-resisting ring 31 can block ball 2 and bring impurity into installation passageway 121 and installation cavity 111, can also strike off the impurity on rolling body surface to reduce impurity and get into in installation passageway 121 and the installation cavity 111, improve the rolling smoothness nature of ball 2, reduce the phenomenon that ball 2 blocked and take place.

In addition, compared with the threaded connection, after the bottom cover 12 is inserted into the bottom of the shell body 11 in an interference manner, the bottom cover 12 is not easy to loosen, the shell body 11 and the bottom cover 12 are connected more tightly, and impurities are not easy to enter between the bottom cover 12 and the inner wall of the shell body 11. Particularly, the rolling body is easy to be impacted and vibrate in the operation process, the bottom cover 12 can bear the load of torque, axial force or the combination of the torque and the axial force in the interference insertion connection mode, and under the impact vibration load, the bottom cover 12 can be effectively connected to the shell body 11 and is not easy to fall off, so that the rolling body can work more reliably.

In a preferred embodiment, more specifically, the housing 11 includes a housing body 112 and a support base 113 mounted on the housing body 112, the housing body 112 is an elastic housing body, the support base 113 has a support surface for supporting the balls 2, and the bottom cover 12 is inserted into the bottom of the elastic housing body in a vertical direction.

After the bottom cover 12 is inserted into the elastic shell body in an interference manner, the elastic shell body generates elastic restoring force, and under the action of the elastic restoring force, the elastic shell body compresses the bottom cover 12 on the wear-resistant ring 31, so that the wear-resistant ring 31 can be compressed on the balls 2, and the sealing performance of the wear-resistant ring 31 is further improved.

The rolling element is at the operation in-process, and ball 2 receives external impact force easily, and under the effect of impact force, bottom 12 can utilize the elastic deformation of elasticity casing body to remove in a plurality of directions to drive ball 2 and remove in a plurality of directions, prevent that ball 2 and bottom 12 from extruding firmly in casing body 112 and leading to ball 2 to be difficult to at the installation passageway 121 internal rotation, improve ball 2 at the rolling smoothness nature and the flexibility of installation passageway 121. In addition, when the bottom cover 12 moves in the transverse direction, the elastic shell body can be attached to the bottom cover 12 under the action of the elastic restoring force of the elastic shell body, so that the gap between the bottom cover 12 and the elastic shell body can be reduced, and the sealing performance is improved.

In addition, the elasticity shell body can play the effect of damping to bottom 12 in many directions, and then plays the effect of damping to ball 2, improves the stability of ball 2 roll operation.

It should be noted that the form of the elastic shell body is not limited in this embodiment. In one embodiment, the elastic shell body is elastic as a whole. In another embodiment, the elastic shell body comprises an elastic layer and a rigid layer provided outside the elastic layer.

For the connection between the elastic shell body and the supporting seat 113, in a preferred embodiment, more specifically, the elastic shell body and the supporting seat 113 are integrally cast. Adopt the integrated into one piece shaping mode of pouring, it is more convenient that elasticity shell body and supporting seat 113 are connected, easily processing, machining efficiency is high. And supporting seat 113 and elasticity shell body firm in connection are difficult for the separation, and supporting seat 113 can effectively support the roll of ball 2.

It should be noted that the connection manner between the elastic shell body and the supporting seat 113 is not limited to the above-mentioned embodiment. In an alternative embodiment, the supporting base 113 is bonded to the elastic shell body.

For the connection between the bottom cover 12 and the elastic shell body, more specifically, the bottom cover 12 has an outwardly protruding annular rib 122 on the outer side, and the elastic shell body has an annular groove 114 on the inner wall for the annular rib 122 to be inserted into. In the embodiment shown in fig. 3, during the process of inserting the bottom cap 12 into the bottom of the elastic housing body in the vertical direction, the elastic housing body can be deformed by the pressing of the annular rib 122, so that the annular rib 122 is inserted into the annular groove 114. After the annular rib 122 is inserted into the annular groove 114, the annular groove 114 realizes the positioning of the bottom cover 12, and the accuracy of the installation position of the bottom cover 12 in the elastic shell body is improved.

In addition, when the ball 2 receives external impact force, the bottom cover 12 moves along with the ball 2 under the action of the impact force, meanwhile, the annular convex rib 122 generates pressure to the annular groove 114 to deform the annular groove 114, after the impact force disappears, the annular groove 114 recovers to the original shape under the action of the elastic force, and the annular convex rib 122 is promoted to recover to the original position, namely, the bottom cover 12 and the ball 2 recover to the original position, so that the stability of the bottom cover 12 and the elastic shell body in matching is further improved, and the gap between the bottom cover 12 and the elastic shell body is reduced.

In a preferred embodiment, more specifically, the inner wall of the housing 11 has a limiting boss 115 protruding inward, and the top of the bottom cover 12 abuts against the limiting boss 115. In the rolling process of the balls 2, when the balls encounter an obstacle or are impacted in the vertical direction, the force is transmitted to the bottom cover 12 through the balls 2 and the wear-resistant ring 31, as shown in fig. 3, the limiting boss 115 can limit the bottom cover 12 to improve the stability of the installation position of the bottom cover 12, further improve the stability of the installation position of the wear-resistant ring 31 installed in the installation channel 121, and enable the wear-resistant ring 31 to be effectively attached to the balls 2 to improve the sealing performance. Furthermore, when the bottom cover 12 is installed, the limit boss 115 can limit the bottom cover 12 so as to install the bottom cover 12 in place, and thus the balls 2 and the wear ring 31.

As for the structure of the bottom cover 12, more specifically, the top of the bottom cover 12 has a first annular rib 123 extending toward the balls 2, the bottom of the bottom cover 12 has a second annular rib 124 extending toward the balls 2, and the first annular rib 123 and the second annular rib 124 hold the wear-resistant ring 31. As shown in fig. 3, the first annular rib 123 and the second annular rib 124 can prevent the wear-resistant ring 31 from being detached from the mounting channel 121, especially when the ball 2 rolls, the wear-resistant ring 31 is easy to move under the driving of the ball 2, and the first annular rib 123 and the second annular rib 124 can prevent the wear-resistant ring 31 from moving in the vertical direction, so as to improve the stability of the mounting position of the wear-resistant ring 31, further improve the reliability of the attachment of the wear-resistant ring 31 and the ball 2, and improve the sealing performance of the wear-resistant ring 31.

More specifically, the wear ring 31 has a partition portion 311, and the partition portion 311 partitions the ball 2 and the second annular rib 124. As shown in fig. 3, when the ball 2 rolls, the partition 311 can scrape off impurities on the outer surface of the ball 2, thereby reducing the occurrence of impurity blockage at the mounting channel 121 and further reducing the impurities entering the mounting channel 121 and the mounting cavity 111. In addition, the partition 311 restrains the balls 2 in the lateral direction, prevents the balls 2 from directly striking the second annular rib 124 during operation, and buffers the impact of the balls 2 on the bottom cover 12. Moreover, when the balls 2 rotate in the mounting channels 121, the wear-resistant ring 31 can prevent the balls 2 from directly rubbing against the second annular rib 124, and reduce the wear of the bottom cover 12.

As for the form of the elastic sealing member 3, more specifically, the elastic sealing member 3 further includes an elastic ring 32, the elastic ring 32 abuts against the wear-resistant ring 31, and the inner wall of the installation passage 121 supports the elastic ring 32. As shown in fig. 3, under the elastic force of the elastic ring 32, the wear-resistant ring 31 can be tightly attached to the ball 2, so as to further reduce the gap between the inner side of the wear-resistant ring 31 and the outer surface of the ball 2, which is beneficial for the wear-resistant ring 31 to scrape off impurities on the outer surface of the ball 2. In particular, during the rolling process of the ball 2, the wear-resistant ring 31 and the ball 2 are continuously rubbed, after long-time use, the wear-resistant ring 31 is worn to a certain extent, so that a gap exists between the wear-resistant ring 31 and the ball 2, and the elastic ring 32 can clamp the wear-resistant ring 31 to compensate the wear-resistant ring 31, reduce the gap between the wear-resistant ring 31 and the ball 2, improve the sealing performance, prolong the service life of the whole elastic sealing element 3 and reduce the replacement times.

More specifically, the elastic ring 32 is provided in plurality, and the side wall of the mounting passage 121 is protruded toward the ball 2 to form a step 125, and the step 125 supports the plurality of elastic rings 32. As shown in fig. 3, the step 125 can form a plurality of laterally extending faces and vertically extending faces on the inner wall of the mounting channel 121 to support the plurality of elastic rings 32, respectively. The step 125 can separate the plurality of elastic rings 32 as compared to stacking the plurality of elastic rings 32 vertically in sequence. When the wear-resistant ring 31 is partially worn, the elastic ring 32 corresponding to the local position is elastically restored to compensate the wear-resistant ring 31. Since the step 125 can separate the plurality of elastic rings 32, the elastic restoring force of the elastic ring 32 at the local position can be reduced to make other elastic rings 32 deviate from the installation position of the elastic ring 32, so that the stability of the installation position of the elastic ring 32 is improved, and the compensation effect of the elastic ring 32 on the wear-resistant ring 31 is further improved.

As for the form of the elastic body, more specifically, the elastic body is a polyurethane body 112. The polyurethane shell body 112 has good elastic resilience, good vibration damping performance and light weight, and can reduce the overall weight of the rolling body.

The material of the wear ring 31 is not limited in the present application. In one embodiment, the wear ring 31 is a polytetrafluoroethylene wear ring.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.

Claims

1. A rolling element with stable sealing performance is characterized by comprising:

the shell comprises a shell body and a bottom cover, the shell body is provided with a mounting cavity, the bottom cover is inserted into the bottom of the shell body in an interference mode in the vertical direction, and the bottom cover is provided with a mounting channel communicated with the mounting cavity;

the ball penetrates into the mounting cavity and the mounting channel, and part of the ball extends out of the mounting channel;

an elastomeric seal including a wear ring mounted to the mounting channel, the bottom cap pressing the wear ring against an outer surface of the ball.

2. The rolling element with stable sealing performance according to claim 1, wherein the housing comprises a housing body and a support seat mounted on the housing body, the housing body is an elastic housing body, the support seat has a support surface for supporting the ball, and the bottom cover is inserted into the bottom of the elastic housing body in a vertical interference manner.

3. The rolling element with stable sealing performance as claimed in claim 2, wherein the elastic shell body and the supporting seat are integrally cast.

4. The rolling element with stable sealing performance as claimed in claim 2, wherein the bottom cover is provided with an annular rib protruding outwards on the outer side, and the inner wall of the elastic shell body is provided with an annular groove for the annular rib to be inserted and matched.

5. The rolling element with stable sealing performance as claimed in claim 1, wherein the inner wall of the shell body is provided with a limiting boss protruding inwards, and the top of the bottom cover abuts against the limiting boss.

6. The rolling element with stable sealing performance of claim 1, wherein the top of the bottom cover is provided with a first annular rib extending towards the balls, the bottom of the bottom cover is provided with a second annular rib extending towards the balls, and the first annular rib and the second annular rib clamp the wear-resistant ring.

7. The rolling body with stabilized sealing according to claim 6, characterized in that the wear ring has a partition which separates the balls and the second annular rib.

8. The rolling body with stable sealing performance of any one of claims 1 to 7, wherein the elastic sealing element further comprises an elastic ring abutting against the wear-resistant ring, and the inner wall of the installation channel supports the elastic ring.

9. The rolling element with stable sealing performance according to claim 8, wherein the elastic ring is provided in plurality, and the side wall of the installation channel is protruded toward the ball to form a step, and the step supports a plurality of the elastic rings.

10. The rolling element with stable sealing performance according to any one of claims 2 to 4, wherein the elastic shell body is a polyurethane shell body.