CN218370106U

CN218370106U - Rolling element with good sealing performance

Info

Publication number: CN218370106U
Application number: CN202220898804.8U
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: 2023-01-24
Anticipated expiration: 2032-04-18

Abstract

The application relates to the technical field of material conveying, in particular to a rolling element with good sealing performance, which comprises a shell, a ball and an elastic sealing element. The inner part of the shell is provided with an installation cavity, the bottom wall of the installation cavity forms a first annular rib extending inwards, and the first annular rib forms an installation hole communicated with the installation cavity; the ball is arranged in the mounting cavity, and part of the ball extends out of the bottom side of the first annular rib from the mounting hole; the elastic sealing element is installed in the installation cavity and comprises a wear-resistant ring which is abutted to the outer surface of the ball, one end of the wear-resistant ring forms a filling part which extends into the installation hole, and the hole wall of the installation hole and the outer surface of the ball clamp the filling part. The application of the rolling element, the packing portion of wear-resisting ring can reduce impurity and get into the installation cavity by the clearance between ball surface and the mounting hole pore wall, improves sealed effect, reduces the phenomenon of ball card in the installation cavity and takes place.

Description

Rolling element with good sealing performance

Technical Field

The application relates to the technical field of material conveying, in particular to a rolling body with good 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 element can be applied to a material conveying device, for example, the rolling element can be applied to a scraper conveyor, the scraper conveyor is a conveying device for conveying coal and materials, generally, the scraper conveyor comprises a chain and a scraper arranged on the chain, the chain can drive the scraper to move along a chute, and the rolling element 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.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides a rolling element that leakproofness is good, and the packing portion of wear-resisting ring can reduce impurity and get into the installation intracavity by the clearance between ball surface and the mounting hole pore wall, improves sealed effect, reduces the phenomenon of ball card in the installation intracavity and takes place, the effectual problem of having solved existence among the prior art.

In order to solve the above problems, the present application provides a rolling element having good sealing performance, comprising:

the mounting structure comprises a shell, a first fixing piece and a second fixing piece, wherein a mounting cavity is formed in the shell, a first annular rib extending inwards is formed on the bottom wall of the mounting cavity, and a mounting hole communicated with the mounting cavity is formed in the first annular rib;

the ball is arranged in the mounting cavity, and part of the ball extends out of the bottom side of the first annular rib from the mounting hole;

the elastic sealing element is installed in the installation cavity and comprises a wear-resistant ring abutting against the outer surface of the ball, one end of the wear-resistant ring forms a filling part extending into the installation hole, and the filling part is clamped between the hole wall of the installation hole and the outer surface of the ball.

Further, the bottom surface of the filling part is higher than the bottom surface of the annular rib.

Further, the hole wall of the mounting hole extends in the vertical direction.

Further, the elastic sealing element further comprises an elastic ring, the elastic ring abuts against the wear-resistant ring, and the inner wall of the installation cavity supports the elastic ring.

Furthermore, an annular cavity is formed between the inner side of the wear-resisting ring and the outer side of the ball, and the elastic ring abuts against the part of the wear-resisting ring, which is provided with the annular cavity.

Furthermore, the annular cavity is provided with a plurality of annular cavities, the elastic rings are provided with a plurality of annular cavities, the bottom wall of the annular cavity close to the mounting hole extends towards the mounting hole to form the filling part, and at least one elastic ring abuts against the annular cavity close to the mounting hole.

Further, the wear-resistant ring further has an abutting portion abutting against the first annular rib.

Furthermore, the side wall of the installation cavity is provided with a second annular rib extending inwards, the second annular rib divides the installation cavity into a first cavity and a second cavity, the first cavity is located below the second cavity, and the elastic sealing element is installed in the first cavity.

Furthermore, one end, far away from the mounting hole, of the wear-resistant ring extends towards the inner wall of the mounting cavity to form a flange, the elastic sealing element further comprises an elastic ring, the elastic ring abuts against the wear-resistant ring, and the inner wall of the mounting cavity supports the elastic ring; the elastic ring is abutted against the flanging, so that the flanging is abutted against the second annular rib.

Further, the wear-resistant ring is a polytetrafluoroethylene wear-resistant ring.

The beneficial effects of this application lie in, its elastic sealing element's wear ring butt in the ball, can reduce external impurity and get into the installation intracavity, and then reduce ball running resistance, reduce the phenomenon of ball card in the installation intracavity and take place. Moreover, the elastic sealing element can apply pressure to the wear-resisting ring through elastic deformation, and the wear-resisting ring is pressed on the outer surface of the ball, so that the abrasion of the wear-resisting ring is compensated, the wear-resisting ring is attached to the ball, and the sealing performance is improved. In addition, the filling part of the wear-resistant ring stretches into the mounting hole, the hole wall of the mounting hole and the ball outer surface clamp the filling part, impurities can be reduced, the impurities enter the mounting cavity through a gap between the ball outer surface and the hole wall of the mounting hole, and the sealing effect is further improved. And the filling part can restrain the ball in the transverse direction, so that the ball is prevented from directly impacting the hole wall of the mounting hole in the operation process, and the impact force of the ball on the shell is buffered. In addition, the filling part can scrape impurities on the outer surface of the ball, and the impurities brought into the mounting cavity by the ball are reduced. The rolling element that the leakproofness is good of this application has effectually solved the problem that exists among 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.

Fig. 4 is a partially enlarged schematic view of a portion a of fig. 3.

Wherein: 1. a housing; 101. a mounting cavity; 1011. a first chamber; 1012. a second chamber; 102. a first annular rib; 103. mounting holes; 104. a second annular rib; 2. a ball bearing; 3. an elastomeric seal; 301. a wear ring; 3011. a filling section; 3012. an annular cavity; 3013. an abutting portion; 3014. flanging; 302. 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 otherwise than as specifically described herein and, therefore, the scope of the present application should not be 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 4, a rolling element having good sealing performance is provided, which includes a housing 1, balls 2, and an elastic seal member 3. The inner part of the shell 1 is provided with a mounting cavity 101, the bottom wall of the mounting cavity 101 is provided with a first annular rib 102 extending inwards, and the first annular rib 102 is provided with a mounting hole 103 communicated with the mounting cavity 101; the ball 2 is arranged in the mounting cavity 101, and part of the ball 2 extends out of the bottom side of the first annular rib 102 from the mounting hole 103; the elastic seal 3 is mounted in the mounting cavity 101, the elastic seal 3 includes a wear ring 301 abutting against the outer surface of the ball 2, a filling part 3011 extending into the mounting hole 103 is formed at one end of the wear ring 301, and the filling part 3011 is sandwiched between the hole wall of the mounting hole 103 and the outer surface of the ball 2.

According to the rolling body, the wear-resistant ring 301 of the elastic sealing element 3 is abutted against the ball 2, so that the foreign matters entering the mounting cavity 101 can be reduced; and, the part that ball 2 stretches out the shell 1 bottom side adheres to external impurity easily, and ball 2 is at the roll in-process, and impurity moves towards installation cavity 101 along with ball 2 easily, and wear-resisting ring 301 can block the adnexed impurity of ball 2 and get into in installation cavity 101, and then reduces ball 2 running resistance, and the phenomenon that reduces ball 2 card in installation cavity 101 takes place. Furthermore, during the operation of the ball 2, the wear-resistant ring 301 and the ball 2 are continuously rubbed, after long-term use, the wear-resistant ring 301 is worn to a certain extent, so that a gap exists between the wear-resistant ring 301 and the ball 2, and the elastic sealing element 3 can apply pressure to the wear-resistant ring 301 through elastic deformation, so that the wear-resistant ring 301 is pressed on the outer surface of the ball 2 to compensate the wear of the wear-resistant ring 301, the wear-resistant ring 301 is attached to the ball 2, and the sealing performance is improved.

The filling part 3011 of the wear-resistant ring 301 extends into the mounting hole 103, the hole wall of the mounting hole 103 and the outer surface of the ball 2 clamp the filling part 3011, impurities can be prevented from entering the mounting cavity 101 through a gap between the outer surface of the ball 2 and the hole wall of the mounting hole 103, and the sealing effect is further improved. When the filling portion 3011 is worn, the filling portion 3011 can be attached to the outer surface of the ball 2 by the elastic compensation of the elastic seal 3, and the service life of the filling portion 3011 is extended. In addition, the filling part 3011 can restrain the ball 2 in the lateral direction, prevent the ball 2 from directly impacting the hole wall of the mounting hole 103 during operation, and buffer the impact force of the ball 2 on the housing 1. When the ball 2 rotates in the mounting hole 103, the filling portion 3011 can prevent the ball 2 from directly rubbing against the hole wall of the mounting hole 103, and reduce the wear of the hole wall of the mounting hole 103. In addition, impurities are easily adhered to the outer surface of the ball 2 in the running process, and when the ball 2 rolls, the filling part 3011 can scrape the impurities on the outer surface of the ball 2, so that the impurities brought into the mounting cavity 101 by the ball 2 are reduced.

In a preferred embodiment, more specifically, the bottom surface of the filling portion 3011 is higher than the bottom surface of the annular rib. As shown in fig. 4, the filling part 3011 has a space for storing impurities below it, and the impurities can adhere to the bottom surface of the filling part 3011 to be stored in the space below the filling part 3011, thereby further filling the gap between the outer surface of the ball 2 and the wall of the mounting hole 103 to block other impurities from entering the mounting cavity 101. Especially, in the case that some impurities are caught between the filling part 3011 and the hole wall of the mounting hole 103, the impurities can better block other impurities from entering the mounting cavity 101 through the gap between the filling part 3011 and the hole wall of the mounting hole 103.

With regard to the structure of the mounting hole 103, in the preferred embodiment, further specifically, the hole wall of the mounting hole 103 extends in the vertical direction. As shown in fig. 4, the filling portion 3011 is more effective in adhering to the wall of the mounting hole 103, and a gap is less likely to occur.

Regarding the structure of the elastic sealing member 3, in a preferred embodiment, more specifically, the elastic sealing member 3 further includes an elastic ring 302, the elastic ring 302 abuts against the wear-resistant ring 301, and the elastic ring 302 is supported by the inner wall of the installation cavity 101. The elastic sealing element 3 compensates for the wear-resistant ring 301 through the elastic ring 302, that is, when the wear-resistant ring 301 is worn, the elastic ring 302 can apply pressure to the wear-resistant ring 301 through elastic deformation, and the wear-resistant ring 301 is pressed on the outer surface of the ball 2 to compensate for the wear-resistant ring 301, so that the gap between the wear-resistant ring 301 and the ball 2 is reduced, and the sealing performance is improved. The elastic ring 302 and the wear-resistant ring 301 are split, and the elastic ring 302 is more flexible and not easy to be limited when elastically deformed.

The form of the elastic seal 3 is not limited to the above embodiment, and for example, the elastic seal 3 may be integrated, that is, the elastic member of the elastic seal 3 and the wear ring 301 may be integrated.

For the embodiment shown in fig. 4, more specifically, an annular cavity 3012 is formed between the inner side of the wear-resistant ring 301 and the outer side of the ball 2, and the elastic ring 302 abuts against the portion of the wear-resistant ring 301 where the annular cavity 3012 is formed. The wear-resisting ring 301 has a small thickness at the annular cavity 3012 and is more easily deformed, and the elastic ring 302 is more easily used for pressing the wear-resisting ring 301 against the balls 2 at the annular cavity 3012, so that the gap between the wear-resisting ring 301 and the balls 2 is reduced, and the sealing effect is improved. Moreover, on the premise of meeting the sealing requirement, the annular cavity 3012 can reduce the contact area between the wear-resistant ring 301 and the balls 2, reduce the resistance of the wear-resistant ring 301 to the balls 2, and improve the rolling smoothness of the balls 2.

With the embodiment shown in fig. 4, more specifically, there are a plurality of annular cavities 3012 and a plurality of elastic rings 302, the bottom wall of the annular cavity 3012 near the mounting hole 103 extends toward the mounting hole 103 to form a filling portion, and at least one elastic ring 302 abuts against the annular cavity 3012 near the mounting hole 103. As shown in fig. 4, when the elastic ring 302 applies an elastic force to the annular cavity 3012 close to the mounting hole 103, on one hand, the elastic force can be transmitted to the wear-resistant ring 301 in the transverse direction, and the wear-resistant ring 301 can be attached to the outer surface of the ball 2 more closely; on the other hand, since the annular cavity 3012 provides a space for deformation of the wear-resistant ring 301, the force applied by the elastic ring 302 to the wear-resistant ring 301 can be transmitted downward to further make the filling portion 3011 more closely fit to the outer surface of the ball 2.

In the structure of the wear-resistant ring 301, more specifically, the wear-resistant ring 301 further includes the contact portion 3013, and the contact portion 3013 contacts the first annular rib 102. As shown in fig. 3 and 4, the first annular rib 102 provides a lateral supporting force to the wear-resistant ring 301 through the filling portion 3011, provides a vertical supporting force to the wear-resistant ring 301 through the abutting portion 3013, and also provides an oblique upward supporting force to the wear-resistant ring 301, so that the wear-resistant ring 301 can better fit to the ball 2. Further, the contact portion 3013 makes the gap between the wear ring 301 and the housing 1 more tortuous, which increases the difficulty of impurities entering the mounting cavity 101, and further improves the sealing effect.

In further detail with respect to the embodiment shown in fig. 3, the side wall of the mounting chamber 101 has a second annular rib 104 extending inwardly, the second annular rib 104 divides the mounting chamber 101 into a first chamber 1011 and a second chamber 1012, the first chamber 1011 is located below the second chamber 1012, and the elastic sealing member 3 is mounted in the first chamber 1011.

The second annular rib 104 can limit the elastic sealing member 3 in the first cavity 1011 to make the elastic sealing member 3 closer to the mounting hole 103, and particularly, under the limitation of the second annular rib 104, the filling part 3011 can be more reliably located in the mounting hole 103 to reduce the impurities entering the mounting cavity 101 from the mounting hole 103. In addition, the second chamber 1012 may be provided with a lubricating medium to improve rolling performance of the balls 2. For example, a plurality of sub-beads may be provided in the second chamber 1012, the sub-beads being abutted against an inner wall of the second chamber 1012, and the balls 2 being abutted on the sub-beads and rolling with respect to the sub-beads, so as to reduce rolling resistance of the balls 2. Of course, other configurations for the second chamber 1012 may be provided as desired. The installation cavity 101 is divided into two cavities by the second annular rib 104, so that different structures can be conveniently arranged in the installation cavity 101, the mutual interference between the structure in the first cavity 1011 and the structure in the second cavity 1012 can be reduced, and the functions of the structures can be exerted.

Regarding the structure of the wear-resistant ring 301, more specifically, one end of the wear-resistant ring 301 away from the mounting hole 103 extends towards the inner wall of the mounting cavity 101 to form a flange 3014, and the elastic ring 302 abuts against the flange 3014, so that the flange 3014 abuts against the second annular rib 104. On one hand, the elastic ring 302 exerts a transverse force on the wear-resistant ring 301, on the other hand, a vertical force is exerted on the wear-resistant ring 301 through the turned-over edge 3014, and the resultant force of the transverse force and the vertical force can act on the position where the top of the wear-resistant ring 301 is abutted to the ball 2, so that the reliability that the top of the wear-resistant ring 301 is abutted to the ball 2 can be improved, and impurities are further reduced from entering the second chamber 1012.

Regarding the material of the wear-resistant ring 301, in a preferred embodiment, the wear-resistant ring 301 is further specifically made of teflon. The polytetrafluoroethylene wear-resistant ring 301 has good wear resistance, long service life, low friction coefficient and small resistance to the running of the ball 2.

The orientation in the present application is based on a state in which the balls 2 are facing downward with respect to the housing 1. In addition, the material of the elastic ring 302 is not limited in the present application, for example, the elastic ring 302 is made of silicone.

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 to which the present application pertains. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

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

2. The rolling element according to claim 1, wherein a bottom surface of the filling portion is higher than a bottom surface of the annular rib.

3. The rolling element of claim 1, wherein the wall of the mounting hole extends in a vertical direction.

4. The rolling element with good sealing performance as claimed in claim 1, wherein the elastic sealing element further comprises an elastic ring, the elastic ring abuts against the wear-resistant ring, and the inner wall of the mounting cavity supports the elastic ring.

5. The rolling element of claim 4, wherein an annular cavity is formed between the inner side of the wear-resistant ring and the outer side of the ball, and the elastic ring abuts against the part of the wear-resistant ring where the annular cavity is arranged.

6. The rolling element with good sealing performance as claimed in claim 5, wherein a plurality of annular cavities are provided, and a plurality of elastic rings are provided, the bottom wall of the annular cavity close to the mounting hole extends towards the mounting hole to form the filling part, and at least one elastic ring abuts against the annular cavity close to the mounting hole.

7. The rolling element with good sealing performance as claimed in claim 1 or 6, wherein the wear-resistant ring further has an abutting portion abutting against the first annular rib.

8. The rolling element of claim 1, wherein the side wall of the mounting cavity has a second annular rib extending inwardly, the second annular rib dividing the mounting cavity into a first chamber and a second chamber, the first chamber being located below the second chamber, the resilient seal being mounted to the first chamber.

9. The rolling element with good sealing performance as claimed in claim 8, wherein one end of the wear-resistant ring away from the mounting hole extends towards the inner wall of the mounting cavity to form a flange, the elastic sealing element further comprises an elastic ring, the elastic ring abuts against the wear-resistant ring, and the inner wall of the mounting cavity supports the elastic ring;

the elastic ring is abutted against the flanging, so that the flanging is abutted against the second annular rib.

10. The rolling element of claim 1, wherein the wear ring is a teflon wear ring.