Retainer bearing with multiple rolling bodies

Abstract

The utility model provides a retainer bearing with a plurality of rolling bodies. The retainer bearing comprises a bearing body base, a roller raceway groove is formed in the middle of an inner hole of the bearing body base, an end face roller raceway is arranged on the bottom end face of the inner hole of the bearing body base, a first retainer is arranged in the end face roller raceway, and a second retainer is arranged in the roller raceway groove. A bearing mandrel body is arranged on the inner bottom end face of the bearing body base, the bottom face of an axis flange of the bearing mandrel body is used for bearing the stress face of the first retainer, a bearing mandrel cooling composite ring is arranged on the upper end face of the axis flange of the bearing mandrel body, and the top end of the bearing mandrel cooling composite ring abuts against a third retainer. And the third retainer and the first retainer are arranged in a mirror image manner by taking the second retainer as a central axis. The supporting device can support the rotary table bearing which rotates rapidly, and the friction coefficient of the bearing in the movement process is reduced.

Description

Technical Field

[0001] The utility model mainly relates to the technical field of bearings, and in particular to a cage bearing with multiple rolling elements. Background Art

[0002] At higher rotational speeds, the turntable bearing is often designed as a rolling bearing, wherein different designs can be used in a manner coordinated with the bearing load.

[0003] Traditional rotating shaft bearings often support fast-running oil-cooled bearings through two radially arranged upper and lower cages in the bearing. In this method, in order to reduce the workload of the cage rollers, a large number of rollers need to be placed in the cage, which makes it difficult to effectively reduce the friction coefficient during bearing movement. Utility Model Content

[0004] The utility model mainly provides a cage bearing with multiple rolling elements to solve the technical problems raised in the above background technology.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] A cage bearing with multiple rolling elements comprises a bearing body base, a roller raceway groove is arranged in the middle of the inner hole of the bearing body base, an end face roller raceway is arranged on the bottom end face of the inner hole of the bearing body base, a first cage is arranged in the end face roller raceway, and a second cage is arranged in the roller raceway groove;

[0007] A bearing shaft body is provided on the inner bottom end face of the bearing body base, the bottom face of the axial flange of the bearing shaft body is used to receive the force-bearing face of the first retaining frame, a bearing shaft cooling composite ring is provided on the upper end face of the axial flange of the bearing shaft body, the top end of the bearing shaft cooling composite ring is abutted against the third retaining frame, and the third retaining frame and the first retaining frame are symmetrically arranged on the upper and lower sides of the second retaining frame.

[0008] Furthermore, the bottom outer ring of the bearing body base is provided with a mounting hole, and the top end is provided with an end cover connection hole.

[0009] Furthermore, a temperature measuring head mounting hole is provided inside the bearing body base, and a skeleton oil seal for sealing lubricating oil is provided at the bottom of the bearing body base.

[0010] Furthermore, an O-ring sealing groove is provided on the top surface of the bearing body base.

[0011] Furthermore, the inner diameter surface of the bearing shaft cooling compound ring and the threaded surface of the shaft flange are both provided with O-ring sealing grooves, bolts are passed through the bearing shaft cooling compound ring to the upper end surface of the shaft flange for threading, and the outer ring diameter surface of the bearing shaft cooling compound ring and the axial flange diameter surface of the bearing shaft body are combined to form an axial roller support surface.

[0012] Furthermore, a plurality of threaded holes are provided on the bottom surface of the axial flange and the upper end surface of the axial flange of the bearing shaft body.

[0013] Furthermore, the top surface and the bottom surface of the second retaining frame are both provided with roller holes, and rollers are inserted into the roller holes.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] Firstly, the utility model adopts the arrangement of the first retainer and the third retainer in the bearing, and cooperates with the second retainer between the first retainer and the third retainer to bear the load of the bearing operation from multiple directions, thereby reducing the number of rollers in a single retainer and reducing the friction coefficient of the rollers in a single retainer.

[0016] Secondly, the utility model increases the reserve of lubricant in the bearing by providing a plurality of retainers and storing lubricant in the roller holes and the gaps between the rollers, thereby improving the heat dissipation of the bearing and meeting the high load requirements of the turntable bearing.

[0017] Thirdly, the utility model arranges the axial roller support surface of the second retaining frame so that the inner hole of the bearing body base and the inner wall of the bearing shaft body are perpendicular, thereby eliminating the need for a tool to extend into the bearing for processing, thereby reducing the precision requirements for bearing grinding.

[0018] The present invention will be explained in detail below with reference to the accompanying drawings and specific embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the utility model;

[0020] Figure 2 It is a cross-sectional view of the utility model;

[0021] Figure 3 It is an exploded view of the utility model;

[0022] Figure 4 It is a structural schematic diagram of the bearing spindle body of the utility model.

[0023] In the figure: 1. bearing body base; 11. roller raceway groove; 12. end face roller raceway; 13. mounting hole; 14. end cover connecting hole; 2. first retaining frame; 3. skeleton oil seal; 4. bearing spindle body; 41. upper end face of shaft flange; 42. bottom face of shaft flange; 5. third retaining frame; 6. bearing spindle cooling composite ring; 7. second retaining frame; 71. roller; 8. end cover. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described in more detail below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings, but the present invention can be implemented in different forms and is not limited to the embodiments described in the text. On the contrary, these embodiments are provided to make the content disclosed in the present invention more thorough and comprehensive.

[0025] It should be noted that when an element is referred to as being "fixed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this article are for illustrative purposes only.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which the present invention belongs. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0027] For examples, please refer to the attached Figure 1-4 A cage bearing with multiple rolling elements comprises a bearing body base 1, a roller raceway groove 11 is arranged in the middle of the inner hole of the bearing body base 1, an end face roller raceway 12 is arranged on the bottom end face of the inner hole of the bearing body base 1, a first cage 2 is arranged in the end face roller raceway 12, and a second cage 7 is arranged in the roller raceway groove 11;

[0028] A bearing shaft body 4 is provided on the inner bottom end face of the bearing body base 1, and the bottom surface 42 of the axial flange of the bearing shaft body 4 is used to receive the force-bearing surface of the first retaining frame 2. A bearing shaft cooling compound ring 6 is provided on the upper end face 41 of the axial flange of the bearing shaft body 4, and the top end of the bearing shaft cooling compound ring 6 is abutted against the third retaining frame 5. The third retaining frame 5 and the first retaining frame 2 are symmetrically arranged with the second retaining frame 7 as the center axis.

[0029] For details, please refer to the attached Figure 2 and 3 The bottom outer ring of the bearing body base 1 is provided with a mounting hole 13, and the top end is provided with an end cover connection hole 14;

[0030] A temperature measuring head mounting hole is provided inside the bearing body base 1, and a skeleton oil seal 3 for sealing lubricating oil is provided at the bottom of the bearing body base 1;

[0031] The top surface of the bearing body base 1 is provided with an O-ring sealing groove;

[0032] It should be noted that, in this embodiment, the bolt enters into the mounting hole 13 through the threaded hole on the bearing spindle body 4, thereby completing the docking between the bearing spindle body 4 and the bearing body base 1, and the bolt enters into the end cover connecting hole 14 through the threaded hole on the end cover 8, thereby completing the connection between the end cover 8 and the bearing body base 1;

[0033] Furthermore, the temperature measuring head is inserted into the temperature measuring head mounting hole so as to perform temperature detection through the temperature measuring head;

[0034] Furthermore, the bearing body base 1 accommodates an O-ring through an O-ring sealing groove so as to perform sealing through the O-ring.

[0035] For details, please refer to the attached Figure 3 and 4 The inner diameter surface of the bearing spindle cooling compound ring 6 and the threaded surface of the spindle flange are both provided with O-type sealing grooves, and the bolts are passed through the bearing spindle cooling compound ring 6 to the upper end surface 41 of the shaft flange for threaded engagement, and the outer ring diameter surface of the bearing spindle cooling compound ring 6 and the axial flange diameter surface 23 of the bearing spindle body 4 are combined into an axial roller support surface 61;

[0036] The shaft flange bottom surface 42 and the shaft flange upper end surface 41 of the bearing shaft body 4 are provided with a plurality of threaded holes;

[0037] The top and bottom surfaces of the second retainer 7 are both provided with roller holes, and rollers 71 are inserted into the roller holes;

[0038] It should be noted that, in the present embodiment, roller holes are provided on the top surface and the bottom surface of the second retaining frame 7 so as to stably accommodate the rollers 71 .

[0039] The specific operation mode of the utility model is as follows:

[0040] When the bearing is in use, relative rotation occurs between the bearing body base 1 and the bearing shaft body 4, and the rollers 71 on the first retaining frame 2, the second retaining frame 7 and the third retaining frame 5 roll. Since the third retaining frame 5 and the first retaining frame 2 are mirror-imaged with the second retaining frame 7 as the central axis, the friction between the bearing shaft cooling compound ring 6 and the bearing shaft body 4, as well as the friction between the end face roller raceway 12 of the bearing body base 1 and the axial flange bottom surface 42 of the bearing shaft body 4 are reduced. At the same time, through the setting of the third retaining frame 5, the friction between the bearing shaft cooling compound ring 6, the circumferential diameter surface of the bearing shaft body 4 and the roller raceway groove 11 of the bearing body base 1 is reduced, so that the fast-rotating turntable bearing can be supported in the above manner and the friction coefficient during the bearing movement is reduced.

[0041] The above description of the utility model in combination with the accompanying drawings is an exemplary description. Obviously, the specific implementation of the utility model is not limited to the above-mentioned method. As long as the non-substantial improvements are made by adopting the method concept and technical solution of the utility model, or the concept and technical solution of the utility model are directly applied to other occasions without improvement, they are all within the protection scope of the utility model.

Claims

1. A cage bearing having a plurality of rolling elements, comprising a bearing body base (1), characterized in that: A roller raceway groove (11) is provided in the middle of the inner hole of the bearing body base (1), an end face roller raceway (12) is provided at the bottom end face of the inner hole of the bearing body base (1), a first retainer (2) is provided in the end face roller raceway (12), and a second retainer (7) is provided in the roller raceway groove (11); A bearing shaft body (4) is provided on the inner bottom end surface of the bearing body base (1); the bottom surface (42) of the axial flange of the bearing shaft body (4) is used to receive the force-bearing surface of the first retaining frame (2); the upper end surface (41) of the axial flange of the bearing shaft body (4) is provided with a bearing shaft cooling composite ring (6); the top end of the bearing shaft cooling composite ring (6) is abutted against the third retaining frame (5).

2. A cage bearing having a plurality of rolling elements according to claim 1, characterized in that: The outer ring at the bottom of the bearing body base (1) is provided with a mounting hole (13), and the top end is provided with an end cover connection hole (14).

3. A cage bearing having a plurality of rolling elements according to claim 1, characterized in that: A temperature measuring head mounting hole is provided inside the bearing body base (1), and a skeleton oil seal (3) for sealing lubricating oil is provided at the bottom of the bearing body base (1).

4. A cage bearing having a plurality of rolling elements according to claim 1, characterized in that: The top surface of the bearing body base (1) is provided with an O-ring sealing groove.

5. A cage bearing having a plurality of rolling elements according to claim 1, characterized in that: The inner diameter surface of the bearing shaft cooling compound ring (6) and the threaded surface of the shaft flange are both provided with O-shaped sealing grooves, bolts are passed through the bearing shaft cooling compound ring (6) and connected to the upper end surface (41) of the shaft flange for threaded engagement, and the outer ring diameter surface of the bearing shaft cooling compound ring (6) and the axial flange diameter surface (23) of the bearing shaft body (4) are combined to form an axial roller support surface (61).

6. A cage bearing having a plurality of rolling elements according to claim 1, characterized in that: The bottom surface (42) of the axial flange and the upper end surface (41) of the axial flange of the bearing shaft body (4) are provided with a plurality of threaded holes.

7. A cage bearing having a plurality of rolling elements according to claim 1, characterized in that: The top surface and the bottom surface of the second retaining frame (7) are both provided with roller holes, and rollers (71) are inserted into the roller holes.

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