Lightweight bearing retainer for high-speed rotation and bearing

Abstract

The utility model discloses a lightweight bearing retainer for high-speed rotation, and relates to the technical field of bearings. Comprising an annular body; the window beam is arranged in the circumferential direction of the annular body. An oil groove for lubricating oil to flow is formed in the window beam in the outer circumferential direction of the annular body; an oil storage hole used for storing lubricating oil is formed in the end face of one side, in the axial direction of the annular body, of the window beam. The oil storage hole extends by a preset distance towards the end face of the other side, in the axial direction of the annular body, of the window beam and does not penetrate through the window beam. The bearing frames are connected between the two adjacent window beams and protrude out of the end faces, in the axial direction of the annular body, of the window beams, and pocket grooves used for bearing rolling bodies are formed in the bearing frames; the oil storage holes and the oil grooves are formed, so that the lubricating space of lubricating oil can be increased, the heat dissipation performance is improved, and the weight of the retainer can be reduced; and a window beam is arranged between every two adjacent bearing frames, so that the mechanical strength of the retainer is ensured.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, and in particular relates to a lightweight bearing retainer and a bearing for high-speed rotation. Background Art

[0002] A bearing cage is a bearing component that wraps all or part of the rolling elements inside the bearing and moves with them. It is used to isolate the rolling elements and usually guide the rolling elements and keep them in the bearing.

[0003] Due to the different roller structures and the fact that the bearing cage is in a complex load and high-speed rotation condition, the corresponding bearing cage will also undergo adaptive changes, requiring the bearing cage itself to withstand large centrifugal forces, impact forces, and vibration forces. The bearing cage is easily subjected to the above forces, which may cause large friction between the bearing cage and the rolling element and generate large heat. It is necessary to dissipate heat from the bearing cage in a timely manner. In the prior art, oil lubrication is usually used for heat dissipation. However, due to the small gap between the cage and the inner and outer rings, the lubricating oil cannot fully flow between the cage and the inner and outer rings.

[0004] In order to adapt to high-speed rotation, the bearing cage needs to be appropriately lightened. However, weight reduction will also affect the structure of the bearing cage, causing the mechanical strength of the bearing cage to decrease. How to achieve mechanical strength of the bearing cage while reducing the weight of the bearing cage is a technical problem that needs to be solved. Utility Model Content

[0005] The utility model provides a lightweight bearing retainer and a bearing for high-speed rotation, so as to solve the problems that the existing bearing retainer has a small gap with the inner and outer rings, resulting in insufficient lubrication, and the contradiction between achieving lightweight of the bearing retainer and maintaining mechanical strength.

[0006] The technical solution adopted by the utility model is:

[0007] A lightweight bearing cage for high-speed rotation, comprising:

[0008] Ring body;

[0009] A window beam, wherein the window beam is arranged along the circumferential direction of the annular body; an oil groove for the flow of lubricating oil is opened in the window beam along the outer circumferential direction of the annular body; an oil storage hole for storing lubricating oil is provided at an end surface of the window beam along one side of the axial direction of the annular body, and the oil storage hole extends a preset distance toward the end surface of the window beam along the other side of the axial direction of the annular body and does not penetrate the window beam;

[0010] A bearing frame is connected between two adjacent window beams and protrudes from the end surface of the window beam along the axial direction of the annular body, and a pocket groove for bearing a rolling body is provided in the bearing frame.

[0011] With such arrangement, a bearing frame for connecting rolling elements between two adjacent window beams is provided, and an oil groove and an oil storage hole are respectively provided on the window beam, and the oil groove is provided on the outer circumferential surface of the window beam along the annular body, so that the lubricating oil can flow evenly between the end face of the window beam and the bearing frame, and between the pocket groove and the window beam, thereby playing a good guiding role for the lubricating oil, and the oil storage hole is provided on the end face of the oil groove along the axial direction of the annular body, and the oil storage hole is completely isolated from the oil groove, and the lubricating oil overflows the oil storage hole and flows into the oil groove, which can store a certain amount of lubricating oil, increase the lubrication space of the lubricating oil, improve the heat dissipation performance of the retaining frame, and at the same time reduce the weight of the entire retaining frame; since window beams are respectively provided at both ends of each bearing frame, only the oil groove and the oil storage hole for the circulation of the lubricating oil are provided on the window beam, which will not reduce the bearing capacity of the bearing frame, and the mechanical strength of the retaining frame is further guaranteed by the connection of the window beams.

[0012] The utility model also has the following additional technical features:

[0013] The distance between the arc surfaces formed between the two sides of the window beam along the circumference of the annular body and the supporting frame gradually increases from the inner diameter to the outer diameter of the annular body.

[0014] With such arrangement, the area of ​​one side of the window beam along the outer circumference direction of the annular body is larger than the area of ​​one side along the inner circumference direction of the annular body, further increasing the mechanical strength of the connection between the two sides of the window beam and the bearing frame.

[0015] The window beam has an outer arc surface arranged along the outer circumference direction of the annular body and an inner arc surface arranged along the inner circumference direction of the annular body;

[0016] The outer arc surface is provided with the oil groove, and / or the inner arc surface is provided with the oil groove.

[0017] With such arrangement, at least one oil groove for the circulation of lubricating oil is arranged along the circumferential direction of the annular body of the window beam, which further increases the circulation area of ​​the oil groove, increases the flow rate of the lubricating oil, and improves the heat dissipation efficiency.

[0018] The oil groove is provided with circular arc chamfers on both sides along the circumference of the annular body; a guiding inclined surface for guiding out the lubricating oil is formed between the circular arc chamfers and the inner circular arc surface or the outer circular arc surface.

[0019] With such a configuration, the circular chamfer and the guide slope further guide the lubricating oil, so that the lubricating oil first passes through the guide slope and then through the circular chamfer to smoothly enter the oil groove, and flows out smoothly through the circular chamfer and the guide slope of the oil groove, thereby speeding up the lubrication process and further improving the lubrication rate.

[0020] The supporting frame includes a base frame and a claw; the claw is symmetrically connected to the top of the base frame and protrudes from one end of the window beam along the axial direction of the annular body, and the base frame protrudes from the other end of the window beam along the circumferential direction of the annular body; the base frame and the claw form the pocket groove for carrying the rolling body.

[0021] With such an arrangement, the claw and the base frame respectively protrude in the end face direction of the window beam, so that the connection space between the claw and the base frame is increased, which can accommodate a variety of different types of rolling bodies, and flow channels are formed between the claw and the window beam, and between the base frame and the window beam, thereby further increasing the flow area of ​​the lubricating oil; the base frame protrudes a certain distance from the bottom end of the window beam, so that the rolling body can be on a different horizontal plane than the window beam, and the lubricating oil flows through the oil groove into the pocket groove to cover most of the area of ​​the rolling body, thereby further improving the heat dissipation effect and heat dissipation efficiency.

[0022] The claw is bent toward the inner side of the groove, and the projection of the claw along the axial direction of the annular body is a trumpet-shaped structure.

[0023] With such arrangement, the claws are bent toward the inner side of the pocket groove so as to wrap around and clamp both sides of the rolling body.

[0024] A step surface is formed between the claw and the base frame so that a preset gap exists between the claw and the rolling body; and a circular arc chamfer is arranged at a position of the step surface close to the claw.

[0025] With such an arrangement, due to the presence of the step surface, a certain gap is created between the rolling body and the inner wall of the pocket claw, so that a tiny gap is formed between the carrier frame and the rolling body, making it easier for the lubricating oil overflowing from the oil groove to flow through the oil groove into the pocket groove, and then flow further from the inside of the pocket groove into between the rolling body and the pocket groove, thereby increasing the lubrication of the rolling body and improving the lubrication effect.

[0026] A circular arc transition surface is formed between the base frame and the window beam, and a transition plane is provided between the circular arc transition surfaces.

[0027] In such a configuration, since the base frame protrudes from the end face of the window beam, an arc transition surface is formed on the connecting surface between the base frame and the window beam, which facilitates the lubricating oil to flow through the arc transition surface after overflowing from the oil tank; in order to enable the base frame to be stably placed on the platform, a transition plane is provided at the bottom of the base frame.

[0028] One end of the pocket claw facing away from the base frame has a guiding slope facing the inner side of the pocket groove.

[0029] With such arrangement, the guiding inclined surface of the claw makes it easy for the lubricating oil to flow out through the oil storage hole into the pocket groove. Under the inclined force of the guiding inclined surface of the claw, the lubricating oil can smoothly flow into the interior of the pocket groove through the claw part to fully lubricate the rolling body and the pocket groove.

[0030] The present application also relates to a bearing, comprising the above-mentioned lightweight bearing retainer, inner ring, outer ring and rolling element for high-speed rotation; the bearing retainer is arranged between the inner ring and the outer ring, the rolling element is connected to the pocket of the bearing retainer, and the inner ring and the outer ring are rotatably connected through the rolling element.

[0031] Due to the adoption of the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0032] A lightweight bearing retainer for high-speed rotation comprises an annular body; the window beam is arranged along the circumference of the annular body; the window beam is provided with an oil groove for the flow of lubricating oil along the outer circumferential direction of the annular body; the window beam has an oil storage hole for storing lubricating oil at the end face along one axial side of the annular body, the oil storage hole extends a preset distance toward the other end face of the window beam along the axial direction of the annular body and does not penetrate the window beam; the bearing frame is connected between two adjacent window beams and protrudes from the end face of the window beam along the axial direction of the annular body, and the bearing frame has a pocket groove for carrying rolling elements.

[0033] A window beam is arranged between the bearing frames that carry the rolling bodies. The window beam is a solid structure as a whole, which can increase the connection strength of the bearing frames. In order to further achieve the lubrication effect, an oil groove and an oil storage hole are respectively arranged on the window beam, and the oil groove and the oil storage hole are not connected. The oil groove is arranged on the outer circumferential surface of the window beam along the annular body, so that the lubricating oil can flow evenly between the end face of the window beam and the bearing frame, and between the pocket groove and the window beam. The oil storage hole is arranged on the axial end face of the oil groove along the annular body. The lubricating oil stored in the oil storage hole flows into the oil groove through the oil storage hole after overflowing, which can store a certain amount of lubricating oil, increase the lubrication space of the lubricating oil, improve the heat dissipation performance of the retaining frame, and reduce the weight of the entire retaining frame. Since window beams are respectively arranged at both ends of each bearing frame, only the oil groove and the oil storage hole for the circulation of the lubricating oil are arranged on the window beam, which will not reduce the bearing capacity of the bearing frame, and further ensure the mechanical strength of the retaining frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0035] Figure 1 This is a side view of a lightweight bearing cage for high-speed rotation according to one embodiment of the utility model;

[0036] Figure 2 for Figure 1 A partial enlarged view of the middle A;

[0037] Figure 3 This is a top view of a lightweight bearing cage for high-speed rotation according to one embodiment of the utility model;

[0038] Figure 4 A side view of a lightweight bearing cage for high-speed rotation in another embodiment of the utility model;

[0039] In the figure,

[0040] 1 annular body, 2 window beam, 3 bearing frame, 4 oil storage hole, 5 oil groove, 6 pocket claw, 7 bottom frame, 8 guide inclined surface, 9 guide inclined surface, 10 step surface, 11 pocket groove. DETAILED DESCRIPTION

[0041] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0042] In addition, in the description of the present invention, it should be understood that the terms "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" 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 the present invention can be understood according to specific circumstances.

[0044] In the present utility model, unless otherwise clearly specified and limited, the first feature "above" or "below" the 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 "implementation method", "example", "one embodiment", "example" or "specific example" 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 utility model. 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.

[0045] In order to more clearly illustrate the overall concept of the present invention, a detailed description is given below in the form of examples in conjunction with the accompanying drawings.

[0046] The utility model relates to a lightweight bearing cage for high-speed rotation, such as Figure 1-4 As shown, it includes an annular body 1; a window beam 2, which is arranged along the circumference of the annular body 1; an oil groove 5 for the flow of lubricating oil is opened in the window beam 2 along the outer circumferential direction of the annular body 1; the window beam 2 has an oil storage hole 4 for storing lubricating oil at the end face of one side of the axial direction of the annular body 1, and the oil storage hole 4 extends toward the other side end face of the window beam 2 along the axial direction of the annular body 1 by a preset distance and does not penetrate the window beam 2; a supporting frame 3, which is connected between two adjacent window beams 2 and protrudes from the end face of the window beam 2 along the axial direction of the annular body 1, and the supporting frame 3 has a pocket groove 11 for carrying rolling elements.

[0047] Preferably, the entire retainer is formed by injection molding, and the retainer can be made of PA46 material or PEEK material.

[0048] like Figure 1 and Figure 3 as well as Figure 4As shown, the ring body 1 is an annular structure, the inner side of the ring body 1 is used to connect the inner ring, and the outer side of the ring body 1 is used to connect the outer ring. The ring body 1 is installed with rolling bodies, and the inner ring and the outer ring are rotatably connected through the rolling bodies; the ring body 1 includes a window beam 2 and a bearing frame 3, and the window beam 2 and the bearing frame 3 are arranged at intervals along the circumferential direction of the ring body 1, that is, a bearing frame 3 is connected between two adjacent window beams 2, or a window beam 2 is connected between two adjacent bearing frames 3; the rolling body is installed in the pocket groove 11 located in the bearing frame 3, as shown in FIG. Figure 2 As shown, an oil groove 5 for circulating lubricating oil and an oil storage hole 4 for storing lubricating oil are provided on the window beam 2. The oil storage hole 4 is not connected to the oil groove 5. The lubricating oil in the oil groove 5 flows from the end face of the carrier frame 3 into the pocket groove 11 inside the carrier frame 3, and the lubricating oil in the oil storage hole 4 flows out from the oil storage hole 4 to the oil groove 5 and the pocket groove 11 in the carrier frame 3, so that the lubricating oil can flow evenly along the end face and circumferential direction of the retaining frame, thereby improving the lubrication effect; moreover, the provision of the oil groove 5 and the oil storage hole 4 can further reduce the weight of the retaining frame; the carrier frame 3 protrudes from the two ends of the window beam 2 along the axial direction of the annular body 1, so that a non-level structure is formed between the two ends of the carrier frame 3 and the window beam 2, and a partial hollow structure appears, thereby further reducing the overall weight of the retaining frame.

[0049] Therefore, a bearing frame 3 carrying a rolling body is connected between two adjacent window beams 2, and an oil groove 5 and an oil storage hole 4 are respectively arranged on the window beam 2, and the oil groove 5 is arranged on the outer circumferential surface of the window beam 2 along the annular body 1, so that the lubricating oil can flow evenly along the end face of the window beam 2 and the bearing frame 3, and between the pocket groove 11 and the window beam 2, which plays a good guiding role for the lubricating oil, and the oil storage hole 4 is arranged on the axial end face of the oil groove 5 along the annular body 1, which is completely isolated from the oil groove 5, so that the overflowing lubricating oil flows into the oil groove 5 through the oil storage hole 4, which can store a certain amount of lubricating oil, increase the lubrication space of the lubricating oil, improve the heat dissipation performance of the retaining frame, and reduce the weight of the entire retaining frame; since window beams 2 are respectively arranged at both ends of each bearing frame 3, only the oil groove 5 and the oil storage hole 4 for the circulation of lubricating oil are arranged on the window beam 2, which will not reduce the bearing capacity of the bearing frame 3, and further ensure the mechanical strength of the retaining frame.

[0050] As a preferred embodiment, the distance between the arc surfaces formed between the two sides of the window beam 2 along the circumference of the annular body 1 and the supporting frame 3 gradually increases from the inner diameter to the outer diameter of the annular body 1 .

[0051] like Figure 3As shown in the structural diagram of the window beam 2, it can be seen that the two side connections of the window beam 2 and the bearing frame 3 form an arc shape, and the two sides of the window beam 2 have arc surfaces, and the arc lines where the arc surfaces are located gradually spread to both sides from the inner wall to the outer wall of the ring body 1, so that the projections of the arc surfaces on both sides of the window beam 2 along the axial direction of the ring body 1 are trumpet-shaped structures. The area of ​​one side of the window beam 2 along the outer circumference direction of the ring body 1 is larger than the area of ​​one side along the inner circumference direction of the ring body 1, further increasing the mechanical strength of the connection between the two sides of the window beam 2 and the bearing frame 3.

[0052] As a preferred embodiment, the window beam 2 has an outer arc surface arranged along the outer circumferential direction of the annular body 1 and an inner arc surface arranged along the inner circumferential direction of the annular body 1; the outer arc surface is provided with the oil groove 5, and / or the inner arc surface is provided with the oil groove 5.

[0053] The specific arrangement of the oil groove 5 is not limited in this embodiment. In this embodiment, the arrangement of the oil groove 5 of the window beam 2 has the following three embodiments:

[0054] Embodiment 1: An oil groove 5 is provided on the outer arc surface of the window beam 2; the outer arc surface forms the outer wall of the window beam 2, the oil groove 5 penetrates the outer arc surface of the window beam 2 along the radial direction of the window beam 2, the oil groove 5 is distributed along the outer circumferential direction of the window beam 2, and extends a preset distance on the window beam 2 along the axial direction of the annular body 1, and the side of the oil groove 5 facing the claw 6 described below penetrates the window beam 2, such as Figure 2 In the orientation shown, the top of the oil groove 5 has an opening, and the oil groove 5 and the oil storage hole 4 are staggered in the radial direction of the annular body 1, so that the oil storage hole 4 and the oil groove 5 are not connected, and the vertical height value of the oil storage hole 4 is smaller than the vertical height value of the oil groove 5.

[0055] Embodiment 2: An oil groove 5 is provided on the inner arc surface of the window beam 2; the inner arc surface forms the inner wall of the window beam 2, and the oil groove 5 penetrates the inner arc surface of the window beam 2 along the radial direction of the window beam 2, the oil groove 5 is distributed along the inner circumferential direction of the window beam 2, and extends a preset distance on the window beam 2 along the axial direction of the annular body 1, the top of the oil groove 5 has an opening, the oil groove 5 and the oil storage hole 4 are staggered along the radial direction of the annular body 1, so that the oil storage hole 4 and the oil groove 5 are not connected, and the vertical height value of the oil storage hole 4 is smaller than the vertical height value of the oil groove 5.

[0056] Embodiment 3: Oil grooves 5 are provided on both the outer arc surface and the inner arc surface. Figure 3 As shown, since the area of ​​the inner arc surface is smaller than that of the outer arc surface, the notch of the oil groove 5 on the inner arc surface can be made smaller than the notch of the oil groove 5 on the outer arc surface.

[0057] In the above three embodiments, at least one oil groove 5 for circulating lubricating oil is provided along the circumferential direction of the annular body 1 of the window beam 2. When the oil grooves 5 are provided on both the inner arc surface and the outer arc surface of the window beam 2, the number of the oil grooves 5 is increased. Since the area of ​​the outer arc surface is larger than that of the inner arc surface, the opening area of ​​the oil groove 5 provided on the outer arc surface can be larger than that of the oil groove 5 provided on the inner arc surface, thereby further increasing the circulation area of ​​the oil groove 5, increasing the flow rate of the lubricating oil, and improving the heat dissipation efficiency.

[0058] As a preferred embodiment, Figure 1 and Figure 2 As shown, the oil groove 5 is provided with circular chamfers on both sides along the circumference of the annular body 1; a guide slope 8 for guiding the lubricating oil is formed between the circular chamfer and the inner arc surface or the outer arc surface. The bottom and side surfaces of the oil groove 5 are both planar structures, and the side surfaces of the oil groove 5 are formed with circular chamfers. In this configuration, the circular chamfers and the guide slopes 8 further guide the lubricating oil, so that the lubricating oil first passes through the guide slope 8 and then passes through the circular chamfers to smoothly enter the oil groove 5, and flows out smoothly through the circular chamfers of the oil groove 5 and the guide slopes 8, which speeds up the lubrication process and further improves the lubrication rate.

[0059] As a preferred embodiment, Figure 1 and Figure 3 as well as Figure 4 As shown, the supporting frame 3 includes a base frame 7 and a claw 6; the claw 6 is symmetrically connected to the top of the base frame 7 and protrudes from one end of the window beam 2 along the axial direction of the annular body 1, and the base frame 7 protrudes from the other end of the window beam 2 along the circumferential direction of the annular body 1; the base frame 7 and the claw 6 form the pocket groove 11 for carrying the rolling body.

[0060] The base frame 7 and the claw 6 constitute the structure of the bearing frame 3. The claw 6 and the base frame 7 are connected to form an integrated structure. There is a pocket groove 11 inside the claw 6 and the base frame 7. When in use, the rolling body is installed in the pocket groove 11. The base frame 7 is used to carry the bottom of the rolling body, and the claw 6 is used to clamp the two sides of the rolling body in the radial direction, respectively playing the role of positioning and supporting the rolling body. Since the claw 6 and the base frame 7 are respectively protruding from the end surface direction of the window beam 2, the connection space between the claw 6 and the base frame 7 is increased, which can adapt to a variety of different types of rolling bodies, and a flow channel is formed between the claw 6 and the window beam 2, and between the base frame 7 and the window beam 2, so as to further increase the flow area of ​​the lubricating oil;

[0061] In addition, the conventional base frame 7 is flush with the end surface of the window beam 2, resulting in the rolling element and the window beam 2 being almost at the same horizontal plane upwards, resulting in the lubricating oil flowing between the window beam 2 and the rolling element to cover only part of the rolling element or a smaller area of ​​the rolling element, mainly concentrated in the bottom area of ​​the rolling element facing the base frame 7. In the present application, the base frame 7 is protruded from the bottom end of the window beam 2 by a certain distance, so that the rolling element and the window beam 2 are not at the same horizontal plane. In addition, an oil groove 5 is provided in the window beam 2. The lubricating oil flows through the oil groove 5 to the pocket groove 11 to cover most of the area of ​​the rolling element, thereby enhancing the lubrication uniformity of the lubricating oil and further improving the heat dissipation effect and heat dissipation efficiency.

[0062] As a preferred embodiment, Figure 1 and Figure 2 as well as Figure 4 As shown, the claw 6 is bent toward the inner side of the pocket groove 11, and the projection of the claw 6 along the axial direction of the ring body 1 is a trumpet-shaped structure. The claw 6 is bent toward the inner side of the pocket groove 11 so as to wrap and clamp the two sides of the rolling body.

[0063] As a preferred embodiment, Figure 1 and Figure 4 As shown, a step surface 10 is formed between the claw 6 and the base frame 7 so that there is a preset gap between the claw 6 and the rolling body; the step surface 10 is provided with an arc chamfer at a position close to the claw 6.

[0064] A step surface 10 is formed between the claw 6 and the base frame 7, and the step surface 10 protrudes toward the inner side of the pocket groove 11, so that when the rolling body is installed in the pocket groove 11, due to the existence of the step surface 10, there is a certain gap between the rolling body and the inner wall of the claw 6. The size of the gap is the width of the step surface 10. The purpose is to form a small gap between the carrier 3 and the rolling body, so that the lubricating oil overflowing from the oil groove 5 can flow through the oil groove 5 into the pocket groove 11, and can further flow from the inside of the pocket groove 11 into the gap between the rolling body and the pocket groove 11, thereby increasing the lubrication of the rolling body, further improving the uniformity of lubrication, and improving the lubrication effect.

[0065] As a preferred embodiment, Figure 1 As shown, an arc transition surface is formed between the base frame 7 and the window beam 2, and a transition plane is provided between the arc transition surfaces.

[0066] Since the base frame 7 protrudes from the end face of the window beam 2, an arc transition surface is formed on the connecting surface between the base frame 7 and the window beam 2, so that the lubricating oil can flow through the arc transition surface after overflowing from the oil tank 5; in order to enable the base frame 7 to be stably placed on the platform, a transition plane is provided at the bottom of the base frame 7.

[0067] As a preferred embodiment, Figure 1 and Figure 2 As shown, one end of the claw 6 facing away from the base frame 7 has a guiding inclined surface 9 facing the inner side of the pocket groove 11.

[0068] The guiding bevel 9 of the claw 6 makes it easy for the lubricating oil to flow out into the pocket groove 11 through the oil storage hole 4. Under the inclined force of the guiding bevel 9 of the claw 6, the lubricating oil can smoothly flow into the pocket groove 11 through the claw 6 to fully lubricate the rolling element and the pocket groove 11.

[0069] The present application also relates to a bearing, comprising the above-mentioned lightweight bearing retainer, inner ring, outer ring and rolling body for high-speed rotation; the bearing retainer is arranged between the inner ring and the outer ring, the rolling body is connected to the pocket 11 of the bearing retainer, and the inner ring and the outer ring are rotatably connected through the rolling body.

[0070] The parts not described in the present invention can be realized by adopting or drawing on the existing technology.

[0071] 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.

[0072] The above description is only an embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A lightweight bearing cage for high-speed rotation, characterized in that: include: Ring body; A window beam, wherein the window beam is arranged along the circumferential direction of the annular body; an oil groove for the flow of lubricating oil is opened in the window beam along the outer circumferential direction of the annular body; an oil storage hole for storing lubricating oil is provided at an end surface of the window beam along one side of the axial direction of the annular body, and the oil storage hole extends a preset distance toward the end surface of the window beam along the other side of the axial direction of the annular body and does not penetrate the window beam; A bearing frame is connected between two adjacent window beams and protrudes from the end surface of the window beam along the axial direction of the annular body, and a pocket groove for bearing a rolling body is provided in the bearing frame.

2. A lightweight bearing cage for high-speed rotation according to claim 1, characterized in that: The distance between the arc surfaces formed between the two sides of the window beam along the circumference of the annular body and the supporting frame gradually increases from the inner diameter to the outer diameter of the annular body.

3. A lightweight bearing cage for high-speed rotation according to claim 1, characterized in that: The window beam has an outer arc surface arranged along the outer circumference direction of the annular body and an inner arc surface arranged along the inner circumference direction of the annular body; The outer arc surface is provided with the oil groove, and / or the inner arc surface is provided with the oil groove.

4. A lightweight bearing cage for high-speed rotation according to claim 3, characterized in that: The oil groove is provided with circular arc chamfers on both sides along the circumference of the annular body; a guiding inclined surface for guiding out the lubricating oil is formed between the circular arc chamfers and the inner circular arc surface or the outer circular arc surface.

5. A lightweight bearing cage for high-speed rotation according to claim 1, characterized in that: The supporting frame includes a base frame and a claw; the claw is symmetrically connected to the top of the base frame and protrudes from one end of the window beam along the axial direction of the annular body, and the base frame protrudes from the other end of the window beam along the circumferential direction of the annular body; the base frame and the claw form the pocket groove for carrying the rolling body.

6. A lightweight bearing cage for high-speed rotation according to claim 5, characterized in that: The claw is bent toward the inner side of the groove, and the projection of the claw along the axial direction of the annular body is a trumpet-shaped structure.

7. A lightweight bearing cage for high-speed rotation according to claim 5, characterized in that: A step surface is formed between the claw and the base frame so that a preset gap exists between the claw and the rolling body; and a circular arc chamfer is arranged at a position of the step surface close to the claw.

8. A lightweight bearing cage for high-speed rotation according to claim 5, characterized in that: A circular arc transition surface is formed between the base frame and the window beam, and a transition plane is provided between the circular arc transition surfaces.

9. A lightweight bearing cage for high-speed rotation according to claim 5, characterized in that: One end of the pocket claw away from the base frame has a guiding inclined surface facing the inner side of the pocket groove.

10. A bearing, characterized in that: It comprises a lightweight bearing retainer, inner ring, outer ring and rolling body for high-speed rotation as described in any one of claims 1 to 9; the bearing retainer is arranged between the inner ring and the outer ring, the rolling body is connected to the pocket of the bearing retainer, and the inner ring and the outer ring are rotatably connected through the rolling body.

Images