Bearing retainer and bearing with same

Abstract

According to the scheme, the bearing retainer comprises a retainer body, the retainer body is provided with a plurality of pockets, rolling bodies are arranged in the pockets, the retainer body comprises a plurality of loading bodies, the pockets are formed in the centers of the loading bodies, and the rolling bodies are arranged in the pockets. The loading body is provided with a first rolling surface facing the bearing inner ring and a second rolling surface facing the bearing outer ring, the loading body comprises shielding parts located at the two ends of the retainer body, and the shielding parts extend towards the first rolling surface and the second rolling surface so that the projection of the shielding parts in the radial direction at least covers two thirds of the rolling bodies. The shielding parts located at the two ends of the retainer main body shield the middle part of the loading body, so that impurities possibly entering the bearing from the two sides of the bearing are blocked, and are matched with a steel wire track to prevent the impurities from entering the space between a pocket hole and the track or entering the pocket hole to cause rotation jamming of a rolling body, so that the action stability of the bearing is improved, and the service life of the bearing is prolonged. The bearing internal structure is protected.

Description

Technical Field

[0001] The present application belongs to the field of bearings, and specifically relates to a bearing retainer and a bearing having the same. Background Art

[0002] As one of the representatives of clean energy, photovoltaic power generation provides endless enjoyment for human green life. Every day as the sun rises, the current converted from solar energy can directly drive washing machines, refrigerators, radios, computers, etc. to work; hot water boiled by solar energy continuously supplies bathrooms and kitchens; if it is rainy, people can use the solar energy stored in the accumulator.

[0003] The current development trend of solar power generation is to use automatic tracking photovoltaic power generation equipment. The various solar panels of this equipment can keep pace with the movement of the sun. Compared with traditional fixed solar photovoltaic power generation equipment that can only generate maximum power for two hours a day, automatic tracking solar panel modules can significantly provide more energy from sunlight radiation.

[0004] In solar power generation equipment, since the adjustment motor movement of the solar power generation equipment has always been in accordance with the same mechanical principle, the motor adjusts the solar panel module to accurately reach each tracking position. The rolling ball bearing ensures the minimum resistance in the tracking movement. In addition, each solar panel module of a set of solar power generation equipment must follow the movement, and many rolling bearings need to be installed and used. The use of rolling bearings is almost irreplaceable.

[0005] According to the shape of the rolling elements, rolling bearings are divided into two categories: ball bearings and roller bearings. Rolling bearings are generally composed of four parts: outer ring, inner ring, rolling element and cage. Cage (i.e. bearing cage, also known as bearing retainer) refers to the bearing part that partially wraps all or part of the rolling elements and moves with them, used to isolate the rolling elements, and usually guides the rolling elements and keeps them in the bearing. Therefore, the cage is a very important component of the bearing, and the structure of the cage directly affects the rotation of the rolling elements, affecting the use effect and service life of the bearing.

[0006] And because solar panels are set up in outdoor environments, the pain points of photovoltaic systems in the industry are currently concentrated on the instability of photovoltaic systems under strong wind conditions. On the one hand, due to the large area of ​​photovoltaic modules under strong wind conditions, photovoltaic modules need to withstand large wind loads. When the wind load is transmitted to the photovoltaic bracket, it exerts a large force on the photovoltaic bracket, which poses a great test to the structural stability. On the other hand, outdoor wind and sand accidentally fall into the bearings, and due to the special low speed of photovoltaic bearings, jamming and other phenomena may occur, affecting the normal use of the bearings and photovoltaic panels. Utility Model Content

[0007] The present application provides a bearing retainer and a bearing having the same. By structurally arranging the retainer and the wire track, the two cooperate with each other so that the bearing has the function of blocking and discharging sand, thereby preventing quicksand from accidentally falling into the bearing and causing the bearing to fail.

[0008] The technical solution adopted in this application is:

[0009] A bearing retainer comprises: a retainer body, wherein the retainer body is provided with a plurality of pockets, rolling bodies are provided in the pockets, the retainer body comprises a plurality of mounting bodies, the pockets are provided at the center of the mounting bodies, the mounting bodies are provided with a first rolling surface facing the inner ring of the bearing and a second rolling surface facing the outer ring of the bearing, and the first rolling surface is symmetrically arranged with the second rolling surface, and the mounting body comprises a shielding portion located at both ends of the retainer body, the shielding portion extends toward the first rolling surface and the second rolling surface so that the projection of the shielding portion in the radial direction covers at least two-thirds of the rolling body.

[0010] By providing a shielding portion, and the shielding portion extending toward the first rolling surface and the second rolling surface, the shielding portions located at both ends of the retaining frame body shield the middle part of the carrier, and further providing the shielding portion so that the projection in the radial direction covers at least two-thirds of the rolling body, it can block impurities that may enter the bearing from both sides of the bearing, and prevent them from entering between the pocket and the track or entering the pocket to cause the rolling body to rotate jammed, thereby improving the stability of the bearing, protecting the internal structure of the bearing, and ensuring the service life of the bearing.

[0011] In a preferred implementation of a bearing retainer, the shielding portion is provided with an expanded diameter section, and the width of the expanded diameter section gradually decreases from the center of the shielding portion to the two ends. The two ends of the carrier may be the shielding portion as a whole, so that the overall protection effect of the central structure of the carrier is better, or a part of the two ends of the carrier may be extended toward the first rolling surface and the second rolling surface as the shielding portion. It can be understood that the first rolling surface and the second rolling surface mentioned here refer to the inner ring and the outer ring of the bearing facing the two sides of the retainer. In addition, the two ends of the carrier may also be provided with a part as a shielding portion, which can also play a shielding effect. Since the pocket hole is located at the center of the carrier, its inner wall needs to contact with the rolling element to limit it. From a radial point of view, the end points of the two ends of the carrier to the part that coincides with the projection of the inner wall of the pocket hole can maintain the same width as the pocket hole. The central part of the two ends of the carrier is set as a shielding portion, and its width gradually decreases from the center to the two ends. Then the central part is used as an expanded diameter section relative to the entire shielding portion, and since the rolling element protrudes from the pocket hole, the expanded diameter section plays a shielding role on the protruding part while also improving the bearing strength of the retainer as a whole to the rolling element.

[0012] In a preferred implementation of a bearing retainer, the width of the shielding portion is greater than the width of the pocket. In the prior art, in order to reduce the rolling friction of the rolling body, the contact area between the pocket and the rolling body is reduced to make the rotation of the rolling body smoother. However, as the contact area decreases, there may be a gap or void between the rolling body and the pocket. If impurities or quicksand fall into the gap, it is difficult to find and clean. In one embodiment, the width of the shielding portion is set to be greater than the width of the pocket, so that the projection of the shielding portion can completely cover the pocket in the radial direction, thereby preventing impurities from falling into the pocket or the gap between the pocket and the rolling body from both ends of the retainer. At the same time, the existence of the shielding portion can prevent impurities or other structures from bumping against the rolling body when the wind is strong, further protecting the rolling body and keeping it in a stable working state.

[0013] A bearing is provided with a retainer as described in any of the above items, and the bearing also includes a wire track, which is distributed on the inner ring and outer ring of the retainer body, and the shielding part is in contact with the wire track. The wire track is provided to make the overall structure of the bearing more compact and have a small cross-sectional area. It adopts a four-point angular contact geometric structure, which saves space extremely, can withstand forces in any direction, can withstand axial and radial loads, and can withstand a certain overturning moment, which is conducive to the complete matching of the track and the rolling element diameter to ensure a better rolling condition, and its interior is elastic and has strong impact resistance. It is light in weight, simple in structure, requires a small installation space, is easy to repair and replace, has low cost, and has good use effect. However, since the retainer and the rolling element are exposed after the wire track is assembled, and there are many gaps between the retainer and the rolling element and the wire track, it is not conducive to maintaining the internal environment of the retainer. Therefore, the shielding part is provided to abut against the wire track. On the one hand, the side wall of the wire track does not contact the rolling element, and on the other hand, the shielding part does not contact the rolling element. The abutment between the two does not affect the limit of the pocket and the movement of the rolling element, and at the same time has a better shielding and protection effect on the internal structure.

[0014] In a preferred implementation of the bearing, the projection of the shielding portion in the radial direction covers the steel wire track. The steel wire track and the rolling element are provided with a contact point. When the projection of the shielding portion in the radial direction covers the steel wire track, that is, the shielding portion continues to extend on the basis of abutting against the steel wire track, while protecting the internal rolling element, the steel wire track is also protected, and it is also conducive to strengthening the limiting effect of the steel wire track.

[0015] In a preferred implementation of the bearing, the wire track is provided with a guide slope, which is used to guide the wind and sand to flow to the outer ring of the bearing. By providing the guide slope, the wind and sand and other impurities at the bearing are guided to flow to the outer ring of the bearing to avoid entering the shaft and the inner ring of the bearing or falling into the inner ring of the bearing to cause jamming.

[0016] In a preferred implementation of the bearing, the width of the side of the wire track close to the cage is smaller than the width of the side away from the cage so that the side wall of the wire track forms a guide slope. The guide slope is formed by improving the structure of the wire track itself, the processing method is simple, and because it is the direction of the side wall of the wire track that is changed, the contact between the wire track and the rolling element is not affected.

[0017] In a preferred implementation of the bearing, the wire track is provided with a guide groove, and the guide groove is only provided on the wire track located on the outer ring of the bearing. The guide groove centrally guides impurities located on the wire track to prevent them from entering the cage. When the guide groove is only provided on the outer ring of the bearing, the impurities are prevented from falling between the shaft and the bearing through the guide groove, causing a cleaning burden and affecting the movement of the rolling element.

[0018] In a preferred implementation of the bearing, the outer wall of the wire track is concave to form a guide groove. The guide groove is formed by improving the structure of the wire track itself, the processing method is simple, and the outer wall of the wire track and the rolling element do not contact each other, which should not affect the original application effect of the wire track and the rolling element.

[0019] In a preferred implementation of the bearing, the wire track is provided with breaks at intervals, and the ends of the guide grooves are connected to the breaks. On the one hand, the wire track is provided with breaks, and during the rotation process, impurities can be discharged from the breaks due to gravity. On the other hand, the ends of the guide grooves are connected to the breaks, and impurities accumulated in the guide grooves can flow to the breaks and be discharged.

[0020] Due to the adoption of the above technical solution, the beneficial effects achieved by this application are as follows:

[0021] By providing a shielding portion, and the shielding portion extending toward the first rolling surface and the second rolling surface, the shielding portions located at both ends of the retaining frame body shield the middle part of the carrier, and further providing the shielding portion so that the projection in the radial direction covers at least two-thirds of the rolling body, it can block impurities that may enter the bearing from both sides of the bearing, and prevent them from entering between the pocket and the track or entering the pocket to cause the rolling body to rotate jammed, thereby improving the stability of the bearing, protecting the internal structure of the bearing, and ensuring the service life of the bearing.

[0022] It should be noted that, in this embodiment, the rolling element is circular, and the contact portion between the pocket and the rolling element shields the rolling element to a certain extent. Since the pocket is located at the center of the carrier, the shielding portion is located at both ends, that is, the shielding portion shields the rolling element twice on the basis of the pocket. In the prior art, in order to reduce the rolling friction of the rolling element, the contact area between the pocket and the rolling element is reduced to make the rotation of the rolling element smoother. However, as the contact area decreases, there may be a gap or void between the rolling element and the pocket. If impurities or quicksand fall into the gap, it is difficult to find and clean. In one embodiment, the width of the shielding portion is set to be greater than the width of the pocket, so that the projection of the shielding portion can completely cover the pocket in the radial direction, thereby preventing impurities from falling into the pocket from both ends of the retaining frame or the gap between the pocket and the rolling element. At the same time, the existence of the shielding portion can prevent impurities or other structures from bumping against the rolling element when the wind is strong, further protecting the rolling element and keeping it in a stable working state. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 This is a structural schematic diagram of a bearing in one embodiment of the utility model;

[0025] Figure 2 for Figure 1 A magnified view of part A;

[0026] Figure 3 It is a cross-sectional view of an embodiment of the present invention.

[0027] Description of reference numerals:

[0028] 1-cage, 11-pocket, 12-rolling element, 13-shielding portion, 14-expanded diameter section;

[0029] 2-wire track, 21-guide slope, 22-guide groove, 23-fracture. DETAILED DESCRIPTION

[0030] In order to more clearly illustrate the overall concept of the present application, a detailed description is given below in an illustrative manner in conjunction with the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment may be combined with each other without conflict.

[0032] In addition, in the description of the present application, it should be understood that the orientations or positional relationships indicated by the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0033] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0034] In the present application, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments or examples.

[0035] The present application provides a bearing retainer, such as Figures 1 to 3 As shown, it includes: a retainer 1 main body, and the retainer 1 main body is provided with a plurality of pockets 11, and rolling bodies 12 are arranged in the pockets 11. The retainer 1 main body includes a plurality of loading bodies, and the pocket 11 is arranged at the center of the loading body. The loading body is provided with a first rolling surface facing the inner ring of the bearing and a second rolling surface facing the outer ring of the bearing, and the first rolling surface is symmetrically arranged with the second rolling surface. The loading body includes a shielding portion 13 located at both ends of the retainer 1 main body, and the shielding portion 13 extends toward the first rolling surface and the second rolling surface so that the projection of the shielding portion 13 in the radial direction covers at least two-thirds of the rolling body 12.

[0036] By providing a shielding portion 13, and the shielding portion 13 extends toward the first rolling surface and the second rolling surface, the shielding portions 13 located at both ends of the retaining frame 1 main body form a shield for the middle part of the carrier, and further providing the shielding portion 13 so that the radial projection covers at least two-thirds of the rolling element 12, it can block impurities that may enter the bearing from both sides of the bearing, and prevent them from entering between the pocket 11 and the track or entering the pocket 11 to cause the rolling element 12 to rotate and jam, thereby improving the stability of the bearing, protecting the internal structure of the bearing, and ensuring the service life of the bearing.

[0037] It should be noted that, in this embodiment, the rolling body 12 is circular, and the contact portion between the pocket 11 and the rolling body 12 provides a certain shielding to the rolling body 12. Since the pocket 11 is located at the center of the carrier, the shielding portion 13 is located at both ends, that is, the shielding portion 13 provides a second shielding to the rolling body 12 on the basis of the pocket 11. In the prior art, in order to reduce the rolling friction of the rolling body 12, the contact area between the pocket 11 and the rolling body 12 is reduced to make the rotation of the rolling body 12 smoother. However, as the contact area decreases, there may be gaps or voids between the rolling body 12 and the pocket 11. If impurities or quicksand fall into the gaps, it is difficult to find and clean them. In one embodiment, the width of the shielding portion 13 is set to be greater than the width of the pocket 11, so that the projection of the shielding portion 13 can completely cover the pocket 11 in the radial direction, thereby preventing impurities from falling into the pocket 11 or the gap between the pocket 11 and the rolling body 12 from both ends of the retaining frame 1. At the same time, the existence of the shielding portion 13 can prevent impurities or other structures from colliding with the rolling body 12 when the wind is strong, thereby further protecting the rolling body 12 and keeping it in a stable working state.

[0038] Preferably, in order to avoid structural damage to the retainer 1, the retainer 1 may be made of a wear-resistant flexible material.

[0039] In one embodiment, the shielding portion 13 is provided with an expanded diameter section 14 , and the expanded diameter section 14 gradually decreases in width from the center of the shielding portion 13 toward both ends.

[0040] It should be noted that the two ends of the carrier can be used as the shielding portion 13 as a whole, so that the overall protection effect of the central structure of the carrier is better, or a part of the two ends of the carrier can be used as the shielding portion 13 to extend toward the first rolling surface and the second rolling surface. It can be understood that the first rolling surface and the second rolling surface mentioned here refer to the inner ring and the outer ring of the bearing facing the two sides of the retainer 1. In addition, the two ends of the carrier can also be partially set as the shielding portion 13, which can also play a shielding effect. Since the pocket 11 is located at the center of the carrier, its inner wall needs to contact with the rolling body 12 to limit it. From the radial direction, the end points of the two ends of the carrier to the part that overlaps with the projection of the inner wall of the pocket 11 can maintain the same width as the pocket 11. The central part of the two ends of the carrier is set as the shielding portion 13, and its width gradually decreases from the center to the two ends. Then the central part is used as the expanded diameter section 14 relative to the entire shielding portion 13. Since the rolling body 12 protrudes from the pocket 11, the expanded diameter section 14 can not only shield the protruding part, but also improve the bearing strength of the retainer 1 for the rolling body 12 as a whole.

[0041] The present application also provides a bearing, which is provided with a retaining frame 1 as described in any of the above embodiments, and further includes a wire track 2, which is distributed on the inner ring and outer ring of the retaining frame 1 body, and the shielding portion 13 abuts against the wire track 2.

[0042] The wire track 2 is provided to make the overall structure of the bearing more compact and have a small cross-sectional area. It adopts a four-point angular contact geometric structure, which is extremely space-saving and can withstand forces in any direction, axial and radial loads, and a certain overturning moment. It is conducive to the complete matching of the diameter of the track and the rolling element 12 to ensure a better rolling condition. It is elastic inside and has strong impact resistance. It is light in weight, simple in structure, requires a small installation space, and is easy to repair and replace, low in cost, and has a good use effect. However, after the wire track 2 is assembled, the retainer 1 and the rolling element 12 are exposed, and there are many gaps between the retainer 1 and the rolling element 12 and the wire track 2, which is not conducive to maintaining the internal environment of the retainer 1. Therefore, a shielding portion 13 is provided to abut against the wire track 2. On the one hand, the side wall of the wire track 2 does not contact the rolling element 12, and on the other hand, the shielding portion 13 does not contact the rolling element 12. The abutment between the two does not affect the limit of the pocket 11 and the movement of the rolling element 12, and at the same time has a better shielding and protection effect on the internal structure.

[0043] Furthermore, the projection of the shielding portion 13 in the radial direction covers the steel track 2. The steel track 2 and the rolling element 12 are provided with a contact point. When the projection of the shielding portion 13 in the radial direction covers the steel track 2, that is, the shielding portion 13 continues to extend on the basis of abutting against the steel track 2, while protecting the internal rolling element 12, the steel track 2 is also protected, and it is also beneficial to strengthen the limiting effect of the steel track 2.

[0044] In one embodiment, the wire track 2 is provided with a guide slope 21, which is used to guide the wind and sand to flow toward the outer ring of the bearing. By providing the guide slope 21, the wind and sand and other impurities at the bearing are guided to flow toward the outer ring of the bearing to avoid entering the shaft and the inner ring of the bearing or falling into the inner ring of the bearing to cause jamming.

[0045] Furthermore, the width of the side of the steel track 2 close to the retainer 1 is smaller than the width of the side away from the retainer 1 so that the side wall of the steel track 2 forms a guide slope 21. The guide slope 21 is formed by improving the structure of the steel track 2 itself, and the processing method is simple. Since the direction of the side wall of the steel track 2 is changed, the contact between the steel track 2 and the rolling body 12 is not affected.

[0046] In one embodiment, the wire track 2 is provided with a guide groove 22, and the guide groove 22 is only provided on the wire track 2 located on the outer ring of the bearing. The guide groove 22 centrally guides the impurities located on the wire track 2 to prevent them from entering the retaining frame 1. When the guide groove 22 is only provided on the outer ring of the bearing, the impurities are prevented from falling between the shaft and the bearing through the guide groove 22, causing a cleaning burden and affecting the movement of the rolling element 12.

[0047] Furthermore, the outer wall of the steel wire track 2 is concave to form a guide groove 22. By improving the structure of the steel wire track 2 to form the guide groove 22, the processing method is simple, and the outer wall of the steel wire track 2 and the rolling body 12 are not in contact, and the original application effect of the steel wire track 2 and the rolling body 12 should not be affected.

[0048] In one embodiment, the steel wire track 2 is provided with breaks 23 at intervals, and the ends of the guide grooves 22 are connected to the breaks 23. On the one hand, the steel wire track 2 is provided with the breaks 23, and during the rotation process, impurities can be discharged from the breaks 23 due to gravity. On the other hand, the ends of the guide grooves 22 are connected to the breaks 23, and impurities accumulated in the guide grooves 22 can flow to the breaks 23 for discharge.

[0049] Preferably, since the sizes of impurities such as gravel vary in different environments, the width of the guide groove 22 in the present application solution can be set according to the size of the impurity particles in the actual application scenario of the bearing.

[0050] Anything not described in this application can be achieved by adopting or drawing on existing technologies.

[0051] The various embodiments in this specification are described in a progressive manner, and the same or similar parts between the various embodiments can be referenced to each other, and each embodiment focuses on the differences from other embodiments.

[0052] The above is only an embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various changes and variations. 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 bearing retainer, characterized in that: include: A retainer body, and the retainer body is provided with a plurality of pockets, rolling bodies are provided in the pockets, the retainer body includes a plurality of loading bodies, the pockets are provided at the center of the loading body, the loading body is provided with a first rolling surface facing the inner ring of the bearing and a second rolling surface facing the outer ring of the bearing, and the first rolling surface is symmetrically arranged with the second rolling surface, the loading body includes a shielding portion located at both ends of the retainer body, the shielding portion extends toward the first rolling surface and the second rolling surface so that the projection of the shielding portion in the radial direction covers at least two-thirds of the rolling body.

2. A bearing retainer according to claim 1, characterized in that: The shielding portion is provided with an expanded diameter section, and the expanded diameter section gradually decreases in width from the center of the shielding portion to both ends.

3. A bearing retainer according to claim 1, characterized in that: The width of the shielding portion is greater than the width of the pocket.

4. A bearing, characterized in that: The bearing is provided with a retaining frame as described in any one of claims 1 to 3, and the bearing further comprises a steel wire track, the steel wire track is distributed on the inner ring and the outer ring of the retaining frame body, and the shielding portion abuts against the steel wire track.

5. A bearing according to claim 4, characterized in that: The projection of the shielding portion in the radial direction covers the steel wire track.

6. A bearing according to claim 4, characterized in that: The wire track is provided with a guide slope, and the guide slope is used to guide the wind and sand to flow toward the outer ring of the bearing.

7. A bearing according to claim 6, characterized in that: The width of the side of the steel wire track close to the retaining frame is smaller than the width of the side away from the retaining frame so that the side wall of the steel wire track forms the guiding inclined surface.

8. A bearing according to claim 4, characterized in that: The steel wire track is provided with a guide groove, and the guide groove is only provided on the steel wire track located at the outer ring of the bearing.

9. A bearing according to claim 8, characterized in that: The outer wall of the steel wire track is concave to form the guide groove.

10. A bearing according to claim 8, characterized in that: The wire track is provided with breaks at intervals, and the ends of the guide grooves are connected to the breaks.

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