CN113800199A

CN113800199A - Rolling body

Info

Publication number: CN113800199A
Application number: CN202110995394.9A
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: 2021-08-27
Filing date: 2021-08-27
Publication date: 2021-12-17
Anticipated expiration: 2041-08-27
Also published as: CN113800199B

Abstract

The invention belongs to the technical field of material conveying devices, and particularly relates to a rolling body which comprises a shell and balls, wherein an installation cavity is formed in the shell, the balls are installed in the installation cavity, and part of the balls extend out of the bottom side of the shell; the shell inner wall has the holding surface, and the top butt of ball is in the holding surface, is equipped with the blowoff hole at the chamber wall of the installation cavity at the edge of holding surface, blowoff hole and installation cavity intercommunication. According to the invention, the balls of the rolling body are directly abutted with the supporting surface, so that impurities entering between the balls and the supporting surface can be reduced, the resistance of the impurities to the rolling of the balls is further reduced, and the abrasion of the impurities to the balls and the supporting surface is reduced. In addition, the sewage draining hole is located at the edge of the supporting surface, so that the efficiency of discharging impurities out of the installation cavity can be improved, and the probability of compacting the impurities in the installation cavity is reduced.

Description

Rolling body

Technical Field

The invention relates to the technical field of material conveying devices, in particular to a rolling body.

Background

At present, the existing rolling bodies generally comprise a housing, and a ball arranged in the housing, wherein the ball partially extends out of the bottom side of the housing and can roll relative to the housing. The rolling elements can be used in material conveying devices to reduce the resistance of the material conveying devices to operate, for example, the rolling elements can be applied to a scraper conveyor, which is a conveying device for conveying coal and materials and generally comprises a chain and scrapers mounted on the chain, and the chain can drive the scrapers to slide on the conveying surface of the scraper conveyor. However, the scraper conveyor is generally used in a coal mine and other scenes with poor environmental cleanliness, and impurities such as coal dust and sludge generally exist on a conveying surface. The scraper blade is at the operation in-process, and impurity gets into the shell easily, and the impurity of piling up in the shell can be compactified gradually, leads to the ball card to be difficult to rotate in the shell, and some impurity that hardness is great moreover causes wearing and tearing to the ball easily.

Disclosure of Invention

In order to solve the technical problems, the invention provides a rolling body which can reduce the probability of impurities being compacted in a housing installation cavity, reduce the abrasion of the impurities to a ball and effectively solve the problems in the prior art.

In order to solve the problems, the invention provides a rolling body, which comprises a shell and a ball, wherein a mounting cavity is formed in the shell, the ball is mounted in the mounting cavity, and part of the ball extends out of the bottom side of the shell; the shell inner wall has the holding surface, and the top butt of ball is in the holding surface, is equipped with the blowoff hole at the chamber wall of the installation cavity at the edge of holding surface, blowoff hole and installation cavity intercommunication.

Furthermore, the edge of the supporting surface is provided with a dirt guide channel, the dirt guide channel forms a part of the mounting cavity, and the sewage discharge hole is formed in the wall of the dirt guide channel.

Furthermore, the edge of the supporting surface is positioned between the upper edge and the lower edge of the sewage guide channel, the distance between the upper edge and the lower edge of the sewage guide channel is H, the distance between the edge of the supporting surface and the lower edge of the sewage guide channel is H, and H is more than or equal to 0.15H and less than or equal to 0.85H.

Further, the outer surface of the ball bearing with at least 0.5mm arc length is exposed in the dirt guiding channel.

Furthermore, the sewage draining hole is formed in the top wall of the installation cavity.

Further, the shell includes shell body and installs in shell body's supporting seat, and shell body is inside to have the installation cavity, and the supporting seat stretches into the installation cavity and has the holding surface, and the side of supporting seat has the dirty passageway of part guide.

Furthermore, the inner surface of the dirt guiding channel enclosed by the shell body is an arc-shaped surface which is recessed towards the far away support seat.

Furthermore, the shell body comprises a shell body and a bottom cover arranged at the bottom of the shell body, the shell body and the bottom cover form at least part of wall of the dirt guiding channel, a sealing element is arranged in a part of installation cavity formed in the bottom cover, and the ball and the bottom cover clamp the sealing element.

Furthermore, the bottom cover comprises an upper cover body and a lower cover body abutted to the bottom surface of the upper cover body, the upper surface of the upper cover body forms part of the inner surface of the dirt guiding channel, and a sealing element is arranged in a part of mounting cavity formed in the lower cover body.

Furthermore, the supporting seat is a polytetrafluoroethylene plastic supporting seat.

The invention has the advantages that the ball is directly abutted with the supporting surface, so that impurities entering between the ball and the supporting surface can be reduced, the resistance of the impurities to the rolling of the ball is further reduced, and the abrasion of the impurities to the ball and the supporting surface is reduced. In addition, the sewage draining hole is located at the edge of the supporting surface, so that the efficiency of discharging impurities out of the installation cavity can be improved, and the probability of compacting the impurities in the installation cavity is reduced. The rolling body of the invention effectively solves the problems existing in the prior art.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:

fig. 1 is a front view schematically showing a rolling element according to an embodiment of the present invention.

Fig. 2 is a schematic cross-sectional view of a rolling element according to an embodiment of the present invention.

FIG. 3 is a schematic view of a part of a sectional structure of a rolling element mounted on a scraper according to an embodiment of the present invention.

Wherein: 1. a housing; 11. a mounting cavity; 12. a sewage draining hole; 13. a dirt guiding channel; 14. a housing body; 141. a shell body; 142. a bottom cover; 1421. an upper cover body; 1422. a lower cover body; 15. a supporting seat; 16. an arc-shaped surface; 2. a ball bearing; 3. and a seal.

Detailed Description

In order to more clearly explain the overall concept of the present invention, 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 invention, however, the present invention may be practiced in other ways than those specifically described herein, and thus the scope of the present invention is not limited by the specific embodiments disclosed below.

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

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; 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 meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, 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 an intermediate. In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean 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 invention. 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 invention, as shown in fig. 1 and fig. 2, a rolling body is provided, which comprises a housing 1 and a ball 2, wherein a mounting cavity 11 is formed inside the housing 1, the ball 2 is mounted in the mounting cavity 11, and the ball 2 partially extends out of the bottom side of the housing 1; the inner wall of the shell 1 is provided with a supporting surface, the top of the ball 2 is abutted to the supporting surface, a sewage discharge hole 12 is formed in the wall of the mounting cavity 11 at the edge of the supporting surface, and the sewage discharge hole 12 is communicated with the mounting cavity 11.

When the rolling body runs, impurities easily enter the installation cavity 11 and are gradually accumulated in the installation cavity 11, on one hand, the impurities entering the installation cavity 11 can generate thrust on the impurities in the installation cavity 11, and part of the impurities can be discharged from the sewage discharge hole 12 under the action of the thrust; on the other hand, the rotation of the ball 2 can give a moving force to the impurities in the mounting cavity 11, and the moving force can promote the impurities in the mounting cavity 11 to be discharged from the sewage discharge hole 12; on the other hand, the rolling body can generate vibration during operation, and the vibration can make impurities have certain loose fluidity in the mounting cavity 11, so that the impurities can be promoted to be discharged from the sewage discharge hole 12.

In the rolling process of the ball 2, external impurities are easily attached to the outer surface of the ball 2 and enter the mounting cavity 11 along with the rolling of the ball 2. Ball 2 and the direct butt of holding surface can reduce the clearance between ball 2 and the holding surface, and the impurity between 2 surfaces of ball can receive the hindrance when moving the edge of holding surface, and partial impurity can be followed ball 2 and scraped off on the surface to reduce the impurity that gets into between ball 2 and the holding surface, and then reduce the resistance that impurity rolled the cause to ball 2. Especially for impurities containing substances with higher hardness, the impurities are not easy to enter between the bearing surface and the ball 2, so that the abrasion of the impurities on the ball 2 and the bearing surface can be reduced. Most of the impurities on the outer surface of the ball 2 are scraped off, and a small amount of impurities are attached to the outer surface of the ball 2, such as micro powder having a lubricating effect, fluid coal slurry, and the like, so that the support surface and the ball 2 can be lubricated in an auxiliary manner.

In addition, since foreign substances easily enter the installation cavity 11 from a gap between the outer surface of the ball 2 and the inner wall of the housing 1, most of the foreign substances enter the space of the edge of the support surface first. As shown in fig. 2, the dirt discharge hole 12 is located at the edge of the supporting surface, and most of the impurities can be discharged from the dirt discharge hole 12 before entering the gap between the supporting surface and the ball 2, so that the efficiency of discharging the impurities out of the installation cavity 11 can be improved, and the probability of compacting the impurities in the installation cavity 11 is reduced. And for impurities containing substances with higher hardness, most of the impurities can be discharged from the sewage holes 12 at the edge of the supporting surface before the impurities move between the supporting surface and the ball 2, so that the abrasion of the impurities on the ball 2 and the supporting surface is further reduced.

In a preferred embodiment, the edge of the support surface is further provided with a dirt-guiding channel 13, the dirt-guiding channel 13 forms a part of the mounting chamber 11, and the dirt discharge hole 12 is provided in the wall of the dirt-guiding channel 13. In the embodiment shown in fig. 2, the dirt guiding channel 13 provides a flowing space for the impurities, and especially the vibration generated by the rolling elements during the operation can promote the impurities to flow in the dirt guiding channel 13, which is beneficial for the impurities to be in a loose state, thereby further preventing the impurities from being compacted in the installation cavity 11 and facilitating the impurities to be discharged from the dirt discharging hole 12.

In addition, as shown in the embodiment of fig. 3, the rolling bodies may be installed on a scraper having a dirt storage chamber, and the dirt discharge hole 12 communicates the dirt storage chamber with the dirt guide passage 13. Specifically, in some scenes that impurities contain liquid such as water (mainly water generated by spray dust fall), when the scraper blade is turned over to the ball 2 upwards in the operation process, the impurities in the sewage guide channel 13 enter the sewage storage cavity from the sewage discharge hole 12 under the action of self weight. When the scraper blade is turned over again until the ball 2 faces downwards, the water in the impurities in the sewage storage cavity is easy to flow back into the sewage guide channel 13 under the action of the vibration and the dead weight of the scraper blade due to the large liquidity of the liquid. Lead dirty passageway 13 and provide the space that flows for liquid, liquid can flow in leading dirty passageway 13 to dilute and lead the impurity in dirty passageway 13, further increase the holistic mobility of impurity, prevent the impurity compaction, the impurity after diluting in addition reduces ball 2's resistance.

For the embodiment shown in fig. 2, more specifically, the edge of the supporting surface is located between the upper edge and the lower edge of the dirt guiding channel 13, the distance between the upper edge and the lower edge of the dirt guiding channel 13 is H, and the distance between the edge of the supporting surface and the lower edge of the dirt guiding channel 13 is H, wherein H is greater than or equal to 0.15H and less than or equal to 0.85H.

Under the vibration action of the rolling bodies, a part of impurities are discharged from the sewage discharge hole 12, and a part of impurities in the sewage guide channel 13 are easy to stratify to a certain degree, the impurities with relatively high density are easy to gather at the bottom of the sewage guide channel 13, and the impurities with relatively low density are easy to gather at the top of the sewage guide channel 13. Specifically, in a scene where the impurities contain liquid such as moisture, solid impurities with relatively high density are likely to be collected at the bottom of the dirt guiding channel 13, slurry impurities with relatively low density are likely to be collected at the middle of the dirt guiding channel 13, and liquid impurities with lower density are likely to be collected at the top of the dirt guiding channel 13. The probability that the edge of holding surface contacted pulpous state impurity is bigger, and ball 2 is when the holding surface rotates, and the impurity of pulpous state can play lubricated effect to ball 2 to improve the smoothness nature of the operation of ball 2, reduce the wearing and tearing of ball 2.

More specifically, at least 0.5mm arc length of the outer surface of the ball 2 is exposed in the dirt guiding passage 13. In the embodiment shown in fig. 2, during the operation of the rolling element, a part of foreign matters may be attached to the outer surface of the ball 2 and enter the mounting cavity 11 along with the rolling of the ball 2. Ball 2 is when rolling, and the impurity on its surface can take place the friction with leading other impurity in dirty passageway 13 to do benefit to and strike off the impurity of 2 surfaces of ball, the impurity that reduces 2 surfaces of ball enters into between ball 2 and the holding surface, and then reduces the resistance that impurity rolled the production to ball 2, and reduces the wearing and tearing of impurity to ball 2 and supporting seat 15.

In a scene in which the impurities include substances having a lubricating effect such as coal slime, a small amount of impurities such as fine powder having a lubricating effect and fluid-like coal slime adhere to the outer surface of the balls 2 after most of the impurities are scraped off, and the impurities enter between the balls 2 and the support surface along with the rotation of the balls 2, so that the balls 2 can be lubricated. Furthermore, the balls 2 can apply a force to move the impurities in the sewage guide channel 13 during the rolling process, so that the flowability of the impurities is improved, and the impurities can be more easily discharged out of the sewage discharge hole 12. In addition, in some impurity contain the scene of liquid such as moisture, the moisture that gets into leads dirty passageway 13 can contact ball 2 and take away ball 2 partly heat to cool down ball 2, prevent that the impurity from agglomerating.

In the preferred embodiment, further specifically, the waste hole 12 is provided in the top wall of the installation chamber 11. In the embodiment shown in fig. 2, during the operation of the rolling element, impurities enter the installation cavity 11 from the bottom side of the housing 1, on one hand, the impurities gradually accumulate upwards as the impurities in the installation cavity 11 increase, and on the other hand, the balls 2 are more likely to drive the impurities to move upwards when rolling, so that the impurities are more likely to be discharged from the sewage discharge hole 12 formed in the top wall of the installation cavity 11.

In addition, as in the embodiment shown in fig. 3, the rolling body may be mounted on a scraper having a dirt storage chamber, the dirt discharge hole 12 communicates the dirt storage chamber and the dirt guide passage 13, and in this scenario, the dirt storage chamber may be disposed above the dirt discharge hole 12. Specifically, in some scenes that impurities contain liquid such as water, the sewage guide channel 13, the sewage discharge hole 12 and the sewage storage cavity are almost in the same vertical direction, and when the scraper blade is turned over to enable the ball 2 to face upwards in the operation process, the impurities in the sewage guide channel 13 can more easily enter the sewage storage cavity from the sewage discharge hole 12 under the action of self weight. When the scraper blade overturns again to ball 2 when down, because the mobility of liquid is big, the moisture in the impurity of storing up dirty intracavity flows back more easily in leading dirty passageway 13 under the effect of scraper blade vibration and dead weight to dilute the impurity in leading dirty passageway 13.

It should be noted that the arrangement of the waste hole 12 is not limited to the above embodiment, and in another embodiment, the waste hole 12 is arranged on the side wall of the installation cavity 11.

In a preferred embodiment, more specifically, the housing 1 includes a housing body 14 and a support seat 15 mounted on the housing body 14, the housing body 14 has a mounting cavity 11 therein, the support seat 15 extends into the mounting cavity 11 and has a support surface, and a portion of the dirt guiding channel 13 is arranged on a side of the support seat 15.

Housing body 14 and supporting seat 15 are split type, according to the design demand, and supporting seat 15 and housing body 14 can be processed into required structure respectively to reduce the processing degree of difficulty, can select suitable material to process moreover respectively, for example, supporting seat 15 can adopt the material that has the lubrication action, with the rolling performance that improves ball 2, and housing body 14 can adopt the lower material of cost. In addition, the support seat 15 and the ball 2 can generate heat in the friction process, and in the scene that impurities contain liquid such as water, the liquid in the dirt guide channel 13 can contact the support seat 15 so as to cool the support seat 15.

More specifically, the inner surface of the housing body 14 enclosing the dirt guiding channel 13 is an arc-shaped surface 16 recessed away from the support seat 15. As the embodiment shown in fig. 2, the impurities in the sewage guide channel 13 can move towards the sewage discharge hole 12 along the arc-shaped surface 16, the arc-shaped surface 16 can prevent the impurities from being blocked in the sewage guide channel 13, the flowability of the impurities in the sewage guide channel 13 can be improved, the blockage phenomenon of the sewage guide channel 13 is reduced, and the impurities are more easily discharged from the sewage discharge hole 12.

As for the structure of the housing body 14, more specifically, the housing body 14 includes a housing body 141 and a bottom cover 142 installed at the bottom of the housing body 141, the housing body 141 and the bottom cover 142 form at least a part of the wall of the dirt guiding channel 13, a sealing member 3 is provided in a part of the installation cavity 11 formed inside the bottom cover 142, and the sealing member 3 is held by the balls 2 and the bottom cover 142. As shown in the embodiment of fig. 2, the sealing member 3 can reduce the gap between the balls 2 and the bottom cover 142, thereby further reducing the entrance of impurities from the bottom of the housing 1 into the mounting chamber 11. Meanwhile, the housing body 141 and the bottom cover 142 may be respectively processed with corresponding structures to form at least a portion of the wall of the dirt guiding passage 13, which can reduce the processing difficulty.

Regarding the structure of the bottom cover 142, more specifically, the bottom cover 142 includes an upper cover 1421 and a lower cover 1422 abutting against the bottom surface of the upper cover 1421, the upper surface of the upper cover 1421 forms a part of the inner surface of the dirt guiding channel 13, and a part of the installation cavity 11 formed inside the lower cover 1422 is provided with a sealing member 3. The upper cover body 1421 and the lower cover body 1422 are split, can be processed respectively, and can reduce the processing difficulty. Specifically, compared to the case where the arc surface 16 and the cavity for installing the sealing member 3 are simultaneously formed on the integrated bottom cover 142, the arc surface 16 is formed on the upper cover 1421, and the cavity for installing the sealing member 3 is formed on the lower cover 1422, which is easier to process.

It should be noted that the form of the sealing member 3 is not limited in the present invention, and for example, the sealing member 3 may be a sealing ring.

As to the form of the support seat 15, more specifically, the support seat 15 is a teflon plastic support seat 15. The friction coefficient of the polytetrafluoroethylene plastic support seat 15 is low, and the resistance of the ball 2 when rolling on the support surface of the polytetrafluoroethylene plastic support seat 15 is small. Moreover, the polytetrafluoroethylene plastic support seat 15 is high temperature resistant, and when the ball 2 and the polytetrafluoroethylene plastic support seat 15 generate heat through friction, the polytetrafluoroethylene plastic support seat 15 is not easy to damage.

It should be noted that, the improvement of the present invention lies in the structure of the rolling element, and the application scenarios of the rolling element are not limited, and in order to easily understand the technical effects of the rolling element of the present invention, the present specification lists some application scenarios of the rolling element. For example, the description refers to the use of the rolling element in the context of a scraper blade with a dirt storage chamber when describing the technical effect, but the rolling element is not limited to this context.

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. The rolling body is characterized by comprising a shell and a ball, wherein a mounting cavity is formed in the shell, the ball is mounted in the mounting cavity, and part of the ball extends out of the bottom side of the shell; the inner wall of the shell is provided with a supporting surface, the top of the ball is abutted against the supporting surface, a sewage discharge hole is formed in the wall of the mounting cavity at the edge of the supporting surface, and the sewage discharge hole is communicated with the mounting cavity.

2. The rolling element according to claim 1, wherein the edge of the support surface has a dirt-guiding channel forming part of the mounting cavity, the dirt-discharge hole being provided in a wall of the dirt-guiding channel.

3. The rolling element according to claim 2, wherein the edge of the support surface is located between the upper edge and the lower edge of the dirt guiding channel, the distance between the upper edge and the lower edge of the dirt guiding channel is H, the distance between the edge of the support surface and the lower edge of the dirt guiding channel is H, and H is more than or equal to 0.15H and less than or equal to 0.85H.

4. A rolling element as claimed in claim 2 or 3, wherein at least a 0.5mm arc length of the outer surface of the ball is exposed in the dirt-conducting channel.

5. The rolling element of claim 1 or 2, wherein the drain hole is provided in a top wall of the mounting cavity.

6. The rolling element of claim 2, wherein the housing comprises a housing body and a support seat mounted on the housing body, the housing body has the mounting cavity therein, the support seat extends into the mounting cavity and has the support surface, and the support seat has a portion of the dirt guide channel on a side thereof.

7. The rolling element of claim 6, wherein the inner surface of the housing body enclosing the dirt guiding channel is an arc-shaped surface recessed away from the support seat.

8. The rolling element according to claim 6 or 7, wherein the housing body comprises a housing body and a bottom cover mounted at the bottom of the housing body, the housing body and the bottom cover form at least part of the wall of the dirt guiding channel, a sealing member is arranged in a part of the mounting cavity formed inside the bottom cover, and the ball and the bottom cover clamp the sealing member.

9. The rolling element of claim 8, wherein the bottom cover comprises an upper cover body and a lower cover body abutting against the bottom surface of the upper cover body, the upper surface of the upper cover body forms part of the inner surface of the dirt guiding channel, and part of the mounting cavity formed inside the lower cover body is provided with the sealing element.

10. The rolling element of claim 6, wherein the bearing seat is a polytetrafluoroethylene plastic bearing seat.