Welding retainer and bearing

Abstract

The utility model discloses a welding retainer and a bearing, and the welding retainer comprises a welding main body which is an arc section; the adjacent welding main bodies are connected through the first welding parts in a welding mode, and the multiple welding main bodies are welded to be of an open circular ring structure; and the second welding piece is welded to the end, close to the opening, of the welding body located at the end of the open circular ring structure. The retainer is formed by splicing and welding the multiple sections of welding main bodies, so that the corresponding number of welding main bodies can be selected according to different size requirements, the retainer is modularly arranged, that is, the retainer can be processed by splicing and welding the welding main bodies, the first welding parts and the second welding parts, and the cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bearing processing, in particular to a welding retainer and a bearing. Background Art

[0002] Bearing is an important component in modern mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient of the mechanical rotating body during movement, and ensure the rotation accuracy of the mechanical rotating body.

[0003] A bearing generally consists of four parts: an inner ring, an outer ring, rolling elements and a cage. The inner ring cooperates with the shaft and rotates with the shaft; the outer ring cooperates with the bearing seat and plays a supporting role; the rolling elements are evenly distributed between the inner and outer rings with the help of the cage, and their shape, size and number directly affect the performance and life of the rolling bearing; the cage, also known as the bearing cage or bearing retainer, refers to a bearing part that partially wraps all or part of the rolling elements and moves with them. It is used to isolate the rolling elements, enable the rolling elements to be evenly distributed along the circumference of the bearing and keep the rolling elements in the bearing, and usually guides the rolling elements to rotate for lubrication.

[0004] Currently, the cage is formed by butt welding material strips that meet the size requirements to form a cage with the required inner diameter. Due to the different sizes of bearings, cages of different sizes need to be processed, which requires multiple different processing molds, resulting in high costs.

[0005] Therefore, how to provide a welding cage and obtain cages of different sizes by splicing to reduce costs is a technical problem that needs to be solved urgently by skilled technicians. Utility Model Content

[0006] In view of this, the utility model provides a welding cage, which can obtain cages of different sizes by splicing to reduce costs. In addition, the utility model also provides a bearing having the welding cage.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A welding cage, comprising:

[0009] A welding body, wherein the welding body is a circular arc segment;

[0010] A first welding piece, wherein adjacent welding bodies are welded and connected by the first welding piece, and a plurality of welding bodies are welded into an open circular ring structure;

[0011] A second welding piece is welded to one end of the welding body located at the end of the open circular ring structure and close to the opening.

[0012] Preferably, in the above-mentioned welding retainer, the welding body is arranged with a plurality of circumferentially closed ball pockets along the extension direction, and the ball pockets at the ends of the welding body are circumferentially open structures, the first welding piece connects the ends of adjacent welding bodies, and the first welding piece is used to close the open ball pockets.

[0013] Preferably, in the above-mentioned welding retainer, the welding body comprises:

[0014] A first side wall and a second side wall, wherein the first side wall and the second side wall are arranged concentrically, and the first side wall is located at an inner circle of the second side wall;

[0015] A connecting beam connects the first side wall and the second side wall, and the connecting beam is arranged along the radial direction of the welding body, a circumferentially closed ball pocket is formed between adjacent connecting beams and the first side wall and the second side wall, and a circumferentially open ball pocket is formed between the connecting beam at the end and the first side wall and the second side wall.

[0016] Preferably, in the above-mentioned welding holder, the first welding member comprises a first main body, one side of the first main body has a first butt welding groove, and the other side has a second butt welding groove;

[0017] The first side walls of two adjacent welding bodies are welded to the first butt welding groove, and the second side walls of two adjacent welding bodies are welded to the second butt welding groove.

[0018] Preferably, in the above-mentioned welding retainer, the first side wall of the welding body abuts against the first main body, and solder is provided on the surface of the first side wall away from the second side wall, on the surface of the second side wall away from the first side wall and in the first butt welding groove.

[0019] Preferably, in the above-mentioned welding holder, the first main body is a rectangular block, and the top corners of the first welding piece are chamfered;

[0020] And / or, one side of the main body of the first welding piece has a first groove.

[0021] Preferably, in the above-mentioned welding holder, the second welding member comprises a second main body, one side of the second main body has a first welding groove, and the other side has a second welding groove;

[0022] The first side wall of the welding body located at the end of the open circular ring structure close to the opening is welded to the first welding groove, and the second side wall is welded to the second welding groove.

[0023] Preferably, in the above-mentioned welding retainer, the first side wall and the second side wall of the welding body located at the end of the open circular ring structure close to the opening are both against the second body part, and solder is provided in the first welding groove and the second welding groove.

[0024] Preferably, in the above-mentioned welding retainer, the second main body portion has the same shape as the first main body portion, and a height of the second main body portion along the radial direction of the welding body is smaller than a height of the first main body portion along the radial direction of the welding body.

[0025] A bearing comprises the welding retainer described in any one of the above items.

[0026] The utility model discloses a welding retainer, which is formed by splicing and welding multiple sections of welding bodies. Therefore, a corresponding number of welding bodies can be selected according to different size requirements, thereby modularizing the retainer. That is, by splicing and welding the welding body, the first welding part and the second welding part, it can adapt to the processing of retainers of different sizes, which is conducive to reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0028] Figure 1 It is a structural schematic diagram of a welding retainer disclosed in an embodiment of the utility model;

[0029] Figure 2 for Figure 1 A partial enlarged view of middle A;

[0030] Figure 3 for Figure 1 A partial enlarged view of B in the middle;

[0031] Figure 4 It is a partial exploded view of the welding cage disclosed in the embodiment of the utility model;

[0032] Figure 5 It is a structural schematic diagram of a welding main body of a welding retainer disclosed in an embodiment of the utility model;

[0033] Figure 6It is a structural schematic diagram of a first welding part of a welding retainer disclosed in an embodiment of the utility model;

[0034] Figure 7 A diagram showing the position of the solder on the first welding piece of the welding holder disclosed in the embodiment of the utility model;

[0035] Figure 8 It is a structural schematic diagram of the second welding piece of the welding retainer disclosed in the embodiment of the utility model;

[0036] Fig. 9 This is a diagram of the position of the solder on the second welding piece of the welding retainer disclosed in the embodiment of the utility model. DETAILED DESCRIPTION

[0037] The utility model discloses a welding cage, which can obtain cages of different sizes by splicing, thereby reducing the cost. In addition, the utility model also discloses a bearing having the welding cage.

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] In the following, the terms "first" and "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0040] A bearing generally consists of four parts: an inner ring, an outer ring, rolling elements and a cage. The inner ring cooperates with the shaft and rotates with the shaft; the outer ring cooperates with the bearing seat and plays a supporting role; the rolling elements are evenly distributed between the inner and outer rings with the help of the cage, and their shape, size and number directly affect the performance and life of the rolling bearing; the cage, also known as the bearing cage or bearing retainer, refers to a bearing part that partially wraps all or part of the rolling elements and moves with them. It is used to isolate the rolling elements, enable the rolling elements to be evenly distributed along the circumference of the bearing and keep the rolling elements in the bearing, and usually guides the rolling elements to rotate for lubrication.

[0041] Currently, the cage is formed by butt welding material strips that meet the size requirements to form a cage with the required inner diameter. Due to the different sizes of bearings, cages of different sizes need to be processed, which requires multiple different processing molds, resulting in high costs.

[0042] Based on the above problems, the present application discloses a welded cage, which is divided into multiple sections and obtained by splicing and welding to obtain cages of different sizes.

[0043] like Figures 1 to 4 As shown, the welding retainer in the present application includes: a welding body 1 , a first welding part 2 and a second welding part 3 .

[0044] Among them, the welding body 1 is an arc segment; the curvature of the arc of the welding body 1 and the corresponding diameter of the arc can be set according to different needs. It can be understood that during the splicing process, after the welding body 1 is spliced, the obtained retaining frame can be processed by rolling and rounding, so as to obtain a retaining frame with roundness that meets the requirements.

[0045] During the splicing process of multiple welding bodies 1, adjacent welding bodies 1 are welded and connected by the first welding piece 2, and multiple welding bodies 1 are welded into an open circular ring structure. It can be understood that the welded retainer obtained by welding in the present application is a circular ring structure with an opening. By providing an opening on the retainer, it is convenient to assemble the retainer with the inner ring and the outer ring.

[0046] Since the welding retainer in the present application is an open structure, during the welding process of multiple welding bodies 1, there is a welding body 1 located at the end, that is, at the opening, which can be connected in such a way that only one side of the welding body 1 is connected to the adjacent welding body 1 through the first welding piece 2, while the other side is not connected to the first welding piece 2. Based on this, in order to ensure the integrity of the entire welding retainer, the second welding piece 3 is welded to the end of the welding body 1 located at the end of the open circular ring structure close to the opening.

[0047] The welded retainer disclosed in the present application is formed by splicing and welding multiple sections of welding bodies 1. Therefore, the corresponding number of welding bodies 1 can be selected according to different size requirements, thereby modularizing the retainer. That is, the welding body 1, the first welding part 2 and the second welding part 3 can be spliced ​​and welded to adapt to the processing of retainers of different sizes, which is conducive to reducing costs.

[0048] like Figure 5 As shown, in some embodiments, a plurality of circumferentially closed ball pockets are arranged along the extension direction of the welding body 1, which are denoted as the first ball pockets 14, and the ball pockets at the ends of the welding body 1 are circumferentially open structures, which are denoted as the second ball pockets 15. The first welding component 2 connects the ends of adjacent welding bodies 1, and the first welding component 2 is used to close the open ball pockets, that is, to close the second ball pockets 15, so that the second ball pockets 15 form circumferentially closed ball pockets.

[0049] The present application discloses a structure of an end portion of a welding body 1 and a structure of an end portion of the welding body 1 after being welded with a first welding member 2. Those skilled in the art will appreciate that the structure of the end portion of the welding body 1 may be set according to different needs.

[0050] Exemplarily, the welding body 1 includes: a first side wall 11 , a second side wall 12 and a connecting beam 13 .

[0051] The first side wall 11 and the second side wall 12 are arranged concentrically, and the first side wall 11 is located in the inner circle of the second side wall 12; the specific sizes and materials of the first side wall 11 and the second side wall 12 can be set according to different needs and are not specifically limited here.

[0052] After the first side wall 11 and the second side wall 12 are arranged concentrically, an annular structure is formed, and the connecting beam 13 is arranged along the radial direction of the annular structure, and the two ends of the connecting beam 13 are respectively connected to the first side wall 11 and the second side wall 12, so that a circumferentially closed ball pocket is formed between the adjacent connecting beams 13, the first side wall 11 and the second side wall 12, that is, the first ball pocket 14. In some embodiments, the connecting beams 13 are evenly arranged along the circumference of the welding body 1, and a circumferentially open ball pocket is formed between the connecting beam 13 at the end of the first side wall 11 and the first side wall 11 and the second side wall 12, that is, the second ball pocket 15. It should be noted that the circumferential size of the second ball pocket 15 is the same as the circumferential size of the first ball pocket 14, and the only difference is that the second ball pocket 15 has one less connecting beam 13 than the first ball pocket 14.

[0053] The shape and size of the connecting beam 13 can be set according to different needs, and the shape of the ball pocket can be changed by changing the shape of the side of the connecting beam 13 facing the adjacent connecting beam 13. In some embodiments, adjacent connecting beams 13 are symmetrically arranged about the ball pocket therebetween.

[0054] Combination Figure 6 and Figure 7 As shown, the first welding member 2 includes a first main body, one side of the first main body has a first butt welding groove 21, and the other side has a second butt welding groove 22. In some embodiments, the first butt welding groove 21 and the second butt welding groove 22 have the same shape, and the first butt welding groove 21 and the second butt welding groove 22 are symmetrically arranged about the first main body.

[0055] The first side walls 11 of two adjacent welding bodies 1 are welded to the first butt welding groove 21 to realize butt welding of the first side walls 11 of the two adjacent welding bodies 1; the second side walls 12 of two adjacent welding bodies 1 are welded to the second butt welding groove to realize butt welding of the second side walls 12 of the two adjacent welding bodies 1, thereby realizing the welding connection of the two adjacent welding bodies 1 through the first welding part 2.

[0056] The present application discloses a specific structure of a first welding part 2. Those skilled in the art will appreciate that the specific structure of the first welding part 2 can be selected according to different needs, as long as it is possible to weld two adjacent welding bodies 1 together.

[0057] In some embodiments, the thickness of the first welded part 2 along the circumference of the welded retainer may be the same as the thickness of the connecting beam 13 , and the shape of the side of the first welded part 2 facing the ball pocket is the same as the shape of the side of the connecting beam 13 .

[0058] Combination Figure 2 As shown, in the embodiment of the present application, the first welding member 2 protrudes from the welding body 1 along the axial direction of the welding cage to increase the connection strength of the welding. The thickness of the first welding member 2 is not greater than the axial dimension of the roller in the ball pocket along the welding cage to avoid the problem of the bearing using the above welding cage getting stuck during use.

[0059] Combination Figure 2 and Figure 7 As shown, the first side wall 11 of the welding body 1 abuts against the first main body, and the surface of the first side wall 11 away from the second side wall 12, the surface of the second side wall 12 away from the first side wall 11, and the first butt welding groove are all provided with solder 4. Combined with the above description, it can be seen that by providing the first butt welding groove 21 and the second butt welding groove 22 on the first main body, the welding area of ​​two adjacent welding bodies 1 can be increased, and the stability after welding can be improved.

[0060] In some embodiments, the first main body is a rectangular block, and the top corners of the first welded part 2 are chamfered, and the chamfers include but are not limited to arc chamfers or oblique chamfers to reduce the wear of the top corners of the first welded part 2 on other parts. In some embodiments, one side of the main body of the first welded part 2 has a first groove 23. Specifically, the first groove 23 is located on one side of the axial direction of the welding retainer. Since the axial size of the first welded part 2 along the welding retainer is larger than the size of the welding body 1, in order to avoid the first welded part 2 from interfering with the inner and outer rings of the bearing. The shape and size of the first groove 23 can be set according to different needs, and are all within the protection range.

[0061] Combination Figure 8 and Fig. 9 As shown, the second welding member 3 includes a second main body, one side of the second main body has a first welding groove 31, and the other side has a second welding groove 32. In some embodiments, the first welding groove 31 and the second welding groove 32 have the same shape, and the first welding groove 31 and the second welding groove 32 are symmetrically arranged about the second main body.

[0062] The first side wall 11 of the welding body 1 located at the end of the open circular ring structure near the opening is welded to the first welding groove 31, and the second side wall 12 is welded to the second welding groove 32. The ball pocket of the opening is blocked by the second welding member 3, so that the ball pocket of the opening forms a circumferentially closed ball pocket. In some embodiments, the thickness of the second welding member 3 along the circumference of the welding retainer can be the same as the thickness of the connecting beam 13, and the shape of the side of the second welding member 3 facing the ball pocket is the same as the shape of the side of the connecting beam 13.

[0063] In some embodiments, the first side wall 11 and the second side wall 12 of the welding body 1 located at the end of the open circular ring structure near the opening are both against the second body part, and the solder 4 is arranged in the first welding groove 31 and the second welding groove 32. The present application can increase the welding area of ​​the welding body 1 and the second welding part 3 by arranging the solder 4 in the first welding groove 31 and the second welding groove 32, and improve the stability after welding. In addition, placing the solder 4 in the first welding groove 31 and the second welding groove 32 can provide a placement basis for the solder 4, which is conducive to welding.

[0064] In some embodiments, one side of the main body of the second welding member 3 has a second groove 33. Specifically, the second groove 33 is located on one side of the axial direction of the welding cage. Since the size of the second welding member 3 along the axial direction of the welding cage is larger than the size of the welding body 1, in order to avoid the second welding member 3 from interfering with the inner ring and the outer ring of the bearing. The shape and size of the second groove 33 can be set according to different needs and are all within the protection range.

[0065] It can be seen from the accompanying drawings that the second main body portion has the same shape as the first main body portion, and the height of the second main body portion along the radial direction of the welding main body 1 is less than the height of the first main body portion along the radial direction of the welding main body 1. It should be noted that the shapes and sizes of the first welding part 2 and the second welding part 3 can be set according to different needs and are all within the protection range.

[0066] In addition, the present application also discloses a bearing, including a welded retainer, wherein the welded retainer is the welded retainer disclosed in the above embodiment. Therefore, the bearing having the welded retainer also has all the above technical effects, which will not be described one by one here.

[0067] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0068] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A welding cage, characterized in that: include: A welding body, wherein the welding body is a circular arc segment; A first welding piece, wherein adjacent welding bodies are welded and connected by the first welding piece, and a plurality of welding bodies are welded into an open circular ring structure; A second welding piece is welded to one end of the welding body located at the end of the open circular ring structure and close to the opening.

2. The welding cage according to claim 1, characterized in that: The welding body is provided with a plurality of circumferentially closed ball pockets along the extension direction, and the ball pockets at the ends of the welding body are circumferentially open structures, the first welding piece connects the ends of adjacent welding bodies, and the first welding piece is used to close the open ball pockets.

3. The welding cage according to claim 1, characterized in that: The welding body comprises: A first side wall and a second side wall, wherein the first side wall and the second side wall are arranged concentrically, and the first side wall is located at an inner circle of the second side wall; A connecting beam connects the first side wall and the second side wall, and the connecting beam is arranged along the radial direction of the welding body, a circumferentially closed ball pocket is formed between adjacent connecting beams and the first side wall and the second side wall, and a circumferentially open ball pocket is formed between the connecting beam at the end and the first side wall and the second side wall.

4. The welding cage according to claim 3, characterized in that: The first welding member comprises a first main body, one side of the first main body has a first butt welding groove, and the other side of the first main body has a second butt welding groove; The first side walls of two adjacent welding bodies are welded to the first butt welding groove, and the second side walls of two adjacent welding bodies are welded to the second butt welding groove.

5. The welding cage according to claim 4, characterized in that: The first side wall of the welding body abuts against the first main body portion, and solder is provided on a surface of the first side wall away from the second side wall, a surface of the second side wall away from the first side wall, and in the first butt welding groove.

6. The welding cage according to claim 4, characterized in that: The first main body is a rectangular block, and the top corners of the first welding piece are chamfered; And / or, one side of the main body of the first welding piece has a first groove.

7. The welding cage according to claim 4, characterized in that: The second welding member comprises a second main body, one side of the second main body has a first welding groove, and the other side has a second welding groove; The first side wall of the welding body located at the end of the open circular ring structure close to the opening is welded to the first welding groove, and the second side wall is welded to the second welding groove.

8. The welding cage according to claim 7, characterized in that: The first side wall and the second side wall of the welding body located at the end of the open circular ring structure close to the opening are both against the second body part, and solder is arranged in the first welding groove and the second welding groove.

9. The welding cage according to claim 7, characterized in that: The second main body portion has the same shape as the first main body portion, and a height of the second main body portion along a radial direction of the welding body is smaller than a height of the first main body portion along the radial direction of the welding body.

10. A bearing, characterized in that: Comprising a welding retainer as claimed in any one of claims 1 to 9.

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