CN219432295U - Full-load bearing - Google Patents

Abstract

The embodiment of the utility model discloses a full-load bearing, which comprises the following components: a bearing body having a raceway formed therein; the roller assembly is arranged in the roller path and comprises a first roller and a second roller, and the first roller and the second roller are respectively and rotatably connected with the bearing body; the first roller is provided with a first surface, the second roller is provided with a second surface, an oleophobic layer is arranged on the first surface, and the first roller is in contact with the second roller through the oleophobic layer. According to the full-load bearing provided by the embodiment of the utility model, the oil-repellent layer is arranged on the surface of the first roller, so that the lubricant can slide at the interface on the surface of the oil-repellent layer, the lubricant is effectively sucked between the first roller and the second roller, the friction force between the rollers is reduced, and the service life of the full-load bearing is prolonged.

Description

Full-load bearing

Technical Field

The utility model relates to the technical field of fluid lubrication and full-complement bearings, in particular to a full-complement bearing.

Background

The full-load bearing is a bearing component mainly used under high load, and is mainly used in high load bearing situations such as wind power system support and the like. In order to increase the radial load capacity of a full-load bearing, it is common to remove the bearing cage and increase the number of rollers so that the plurality of rollers within the full-load bearing contact each other. However, in the working process of the full-load bearing, because adjacent rollers can relatively move at the same speed and opposite directions, and the entrainment speed between the adjacent rollers is zero, effective entrainment of the lubricant in the full-load bearing cannot be realized among the rollers, and the lubricant is difficult to lubricate among the rollers, so that the friction force of the rollers is increased, the rollers are easy to wear, the bearing is damaged, and the service life of the full-load bearing is shortened.

In order to improve the abrasion caused by zero entrainment between rollers of a full-load bearing, effective lubrication is formed by utilizing the thermal viscosity wedge effect formed by the lubricant between the rollers under the high-speed movement at present, however, the method can only realize effective lubrication between the rollers under the working conditions of high speed, heavy load and the like, and cannot realize effective lubrication under the condition that the thermal effects of low speed, light load, bearing start-stop stage and the like are not obvious.

Disclosure of Invention

In order to overcome at least part of the defects and shortcomings in the prior art, the embodiment of the utility model provides a full-load bearing, wherein an oleophobic layer is arranged on the surface of a first roller, so that the lubricant can slide at an interface on the surface of the oleophobic layer, the lubricant is effectively sucked between the first roller and a second roller, the friction force between the rollers is reduced, and the service life of the full-load bearing is prolonged.

Specifically, the embodiment of the utility model provides a full-load bearing, which comprises the following components: the bearing body comprises a bearing inner ring and a bearing outer ring, wherein the bearing inner ring is arranged adjacent to one side of the center of the bearing outer ring, and a rollaway nest is formed between the bearing inner ring and the bearing outer ring; the roller assembly is arranged in the roller path and comprises a plurality of first rollers and a plurality of second rollers, and the plurality of first rollers and the plurality of second rollers are alternately arranged and respectively connected with the bearing body in a rotating way; wherein each first roller of the plurality of first rollers comprises a first surface, and an intermediate layer and an oleophobic layer disposed in sequence on the first surface.

In addition, the embodiment of the utility model also provides a full-load bearing, which comprises: a bearing body having a raceway formed therein; the roller assembly is arranged in the roller path and comprises a first roller and a second roller, and the first roller and the second roller are respectively and rotatably connected with the bearing body; the first roller is provided with a first surface, the second roller is provided with a second surface, an oleophobic layer is arranged on the first surface, and the first roller is in contact with the second roller through the oleophobic layer.

In one embodiment of the present utility model, the first rollers are provided in plurality, the second rollers are provided in plurality, and the plurality of first rollers and the plurality of second rollers are alternately provided in the raceway.

In one embodiment of the utility model, the first roller includes an intermediate layer thereon, the oleophobic layer being attached to the first surface by the intermediate layer.

In one embodiment of the utility model, the first surface is provided with micropores, and the oleophobic layer is provided in the micropores.

In one embodiment of the utility model, the oleophobic layer is a fluorinated diamond-like coating.

In one embodiment of the utility model, the bearing body includes a flange disposed on opposite sides of the raceway in a first direction; the first direction is parallel to an axial direction of the bearing body.

In one embodiment of the utility model, the bearing body comprises a bearing inner ring and a bearing outer ring, the bearing inner ring is arranged adjacent to one side of the center of the bearing outer ring, the bearing inner ring is rotationally connected with the bearing outer ring through the roller assembly, the flange is connected with one side of the bearing outer ring adjacent to the center, and the raceway is formed among the bearing inner ring, the bearing outer ring and the flange.

In one embodiment of the present utility model, the first roller and the second roller are of spherical structure, and the surface of the first roller is the first surface.

In one embodiment of the present utility model, the first roller and the second roller are cylindrical structures, and the side surface of the first roller is the first surface.

The technical scheme can have one or more of the following advantages: according to the embodiment of the utility model, the roller assembly is arranged in the roller path of the bearing body, and comprises the first roller provided with the oleophobic layer and the second roller not provided with the oleophobic layer, so that when the full-load bearing is operated, the lubricant added in the roller path can generate interface sliding on the surface of the oleophobic layer, the entrainment speed of the lubricant between the first roller and the second roller is no longer zero, and the lubricant between the first roller and the second roller is effectively lubricated through entrainment, the friction force of the roller assembly is reduced, and the service life of the full-load bearing is prolonged; in addition, the oleophobic layer can penetrate into the micropores of the first roller surface, which can still maintain the slip properties of the first roller surface when the oleophobic layer wears.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic perspective view of a full-load bearing according to an embodiment of the present utility model.

Fig. 2 is a schematic structural diagram of the full-load bearing shown in fig. 1 from a top view.

FIG. 3 is a schematic cross-sectional structural view of section A-A of the full complement bearing shown in FIG. 2.

Fig. 4 is an enlarged schematic view of the B region of the full complement bearing shown in fig. 3.

Fig. 5 is a schematic view of a part of the first roller of the full complement bearing shown in fig. 1.

Fig. 6 is a schematic cross-sectional structural view of the first roller of the full complement bearing shown in fig. 5.

Fig. 7a is a schematic diagram of the internal operation principle of a conventional full-load bearing.

Fig. 7b is a schematic diagram of the internal operation principle of the full-load bearing according to the embodiment of the present utility model.

Fig. 8 is a schematic structural view of the porous material layer of the full complement bearing shown in fig. 1.

Detailed Description

In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model. The present utility model may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the utility model, whereby the utility model is not limited to the specific embodiments disclosed below.

In the description of the embodiments of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the embodiments of the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "mounted" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

As shown in fig. 1, an embodiment of the present utility model provides a full complement bearing 1. The full complement bearing 1 comprises, for example, a bearing body 100 and a roller assembly 200.

In one embodiment of the present utility model, as shown in fig. 2, 3 and 5, the bearing body 100 includes a bearing inner ring 110 and a bearing outer ring 120, where the bearing inner ring 110 and the bearing outer ring 120 are both annular, and the bearing inner ring 110 and the bearing outer ring 120 are disposed concentrically, for example, and the bearing inner ring 110 is disposed adjacent to the axis of the bearing outer ring 120, and a raceway 101 is formed between a side of the bearing outer ring 120 near the axis and a side of the bearing inner ring 110 far from the axis. The roller assembly 200 includes, for example, a plurality of first rollers 210 and a plurality of second rollers 220, the plurality of first rollers 210 and the plurality of second rollers 220 being alternately disposed with each other within the raceway 101, for example, the raceway 101 being filled with a lubricant. Referring to fig. 5, the first roller 210 is provided with a first surface 211, the first surface 211 is provided with an oleophobic layer 212, the lubricant moves along with the first roller 210 and the second roller 220 during the operation of the bearing body 100, the lubricant generates interface sliding on the surface of the oleophobic layer 212, and the movement speed of the lubricant is smaller than that of the first roller 210 at this time, so that the lubricant can form effective lubrication between the first roller 210 and the second roller 220 through entrainment, thereby reducing the friction force between the rollers.

Specifically, as shown in fig. 2, 3, 4, and 5, a plurality of first rollers 210 and a plurality of second rollers 220 are each rotatably connected between the bearing outer race 120 and the bearing inner race 110, the first rollers 210 and the second rollers 220 are densely arranged in the raceway 101 and fill the space in the raceway 101, and the bearing inner race 110 and the bearing outer race 120 can be relatively concentrically rotated by the roller assembly 200. When the full-load bearing 1 operates, the bearing inner ring 110 is connected with a transmission shaft, the bearing outer ring 120 is connected with a bearing seat or a load, the bearing outer ring 120 is fixed, and the bearing inner ring 110 rotates and drives the roller assembly 200 to move; or the bearing inner race 110 is fixed, and the bearing outer race 120 rotates and drives the roller assembly 200. The first roller 210 and the second roller 220 are, for example, cylindrical structural rollers, and the outer peripheral surface of the first roller 210 is a first surface 211. In other implementations of the present embodiment, the first roller 210 and the second roller 220 are, for example, each of a ball-shaped structure, and the surface of the first roller 210 is the first surface 211. The lubricant filled in the raceway 101 is, for example, a lubricating oil or grease, and the oleophobic layer 212 and the lubricant have non-wettability/interface slip property, for example, the lubricant and the oleophobic layer 212 are in a combination of wettability/non-wettability.

In one embodiment of the utility model, as shown in FIGS. 5, 6, and 7b, the oleophobic layer 212 is, for example, an F-DLC (Fluorinated Diamond like Carbon, fluorinated diamond-like) coating, or other oleophobic coating that can achieve interfacial slippage. The first roller 210 and the second roller 220 are, for example, steel rollers, and the second roller 220 is provided with a second surface 221 on a surface thereof by an oleophobic layer 212 provided on a first surface 211 of the first roller 210, and the first roller 210 is in contact with the second surface 221 by the oleophobic layer 212. During rotation, the first roller 210 (which may generate an interface slip) and the second roller (which does not have an interface slip) contact each other. The roller assembly 200 further comprises an intermediate layer 213, for example, the intermediate layer 213 being arranged between the first surface 211 and the oleophobic layer 212, the oleophobic layer 212 being connected to a side of the intermediate layer 213 remote from the first surface 211, the intermediate layer 213 being for example a silicon coating for securing the oleophobic layer 212.

In one embodiment of the utility model, oleophobic layer 212 and intermediate layer 213 can be fabricated on first surface 211 by, for example, PVD (Physical Vapor Deposition ), CVD (Chemical Vapor Deposition, chemical vapor deposition) techniques, or other immersion methods. Specifically, in performing the coating preparation, an intermediate layer 213 made of, for example, silicon is first prepared on the first surface 211 of the first roller 210, and the intermediate layer 213 may be tightly bonded to both the first surface 211 and the oleophobic layer 212. Thereafter, for example, on the intermediate layer 213Oleophobic layer 212, which is F-DLC coating, is prepared by, for example, magnetron sputtering technique, by simultaneously introducing CH in a certain proportion into the chamber ₄ (methane) and CF ₄ The (carbon tetrafluoride) gas, in the preparation of the formed coating, fluorine element replaces part of the carbon element position, forming the oleophobic layer 212 of the F-DLC coating.

In one embodiment of the present utility model, as shown in fig. 2, 3 and 4, the bearing body 100 further includes a flange 140, for example. The flange 140 is, for example, a ring shape, and the flange 140 is disposed on two opposite sides of the raceway 101 in a first direction X, which is parallel to the axial direction of the bearing body 100. The flange 140 is connected to the side of the bearing outer ring 120 adjacent to the center, and is located between the bearing outer ring 120 and the bearing inner ring 110, the raceway 101 is located between the bearing inner ring 110, the bearing outer ring 120 and the flange 140, and the flange 140 is used for further limiting the movement range of the roller assembly 200 in the raceway 101, so that the stability of the full-load bearing 1 during operation is improved.

Further, as shown in fig. 5 and 6, for example, a plurality of micropores 214 are formed on the first surface 211 of the first roller 210, and during the preparation process of the oleophobic layer 212, the prepared oleophobic layer 212 can be filled in the micropores 214, so that even if the oleophobic layer 212 is worn under the influence of the working condition of the fully loaded bearing 1 during the operation process, the oleophobic layer 212 inside the micropores 214 can still ensure the sliding property of the first roller 210 after the outside of the oleophobic layer 212 is worn. In addition, due to the arrangement of the oleophobic layer 212, the first roller 210 and the raceway 101 form interface sliding/no-interface sliding contact, so that during operation, friction force between the first roller 210 and the bearing inner ring 110 and the bearing outer ring 120 in the raceway 101 is reduced due to interface effect, and friction force between the first roller 210 is reduced.

In one embodiment of the present utility model, as shown in fig. 7a, a plurality of third rollers 400 made of steel are provided in a conventional full-load bearing, for example, the plurality of third rollers 400 are in contact with each other, and the plurality of third rollers 400 are filled with the lubricant; when the third rollers 400 rotate, for example, the adjacent two third rollers 400 rotate in the same direction and at the same speed, the lubricant moves along with the third rollers 400 on the surfaces of the third rollers 400, and since the rotation speeds of the adjacent two third rollers 400 are equal and the movement directions of the surfaces between the two third rollers 400 are opposite, the entrainment speed between the adjacent two third rollers 400 is zero, the lubricant cannot effectively lubricate between the adjacent third rollers 400 through effective entrainment, and the plurality of third rollers 400 are easy to wear during rotation.

Further, as shown in fig. 5, 7a and 7b, compared with the conventional full-load bearing, in the full-load bearing 1 provided by the embodiment of the present utility model, the first rollers 210 provided with the oleophobic layer 212 and the second rollers 220 not provided with the oleophobic layer 212 are alternately arranged, the contact form without interface sliding and capable of generating interface sliding is formed between the first rollers 210 and the second rollers 220, and during operation, the lubricant firstly rotates along with the second rollers 220 to enter between the second rollers 220 and the first rollers 210, and the movement direction and the rotation speed of the lubricant on the surface of the second rollers 220 are consistent with those of the second rollers 220. Since the oil-repellent layer 212 is disposed on the first roller 210, when the lubricant contacts the oil-repellent layer 212, the moving speed of the lubricant is less than the rotating speed of the first roller 210, and the moving direction of the lubricant is affected by the overall lubrication state, which may be identical to or opposite to the rotating direction of the first roller 210. At this point, the entrainment rate of the lubricant is no longer zero, the lubricant may form an effective entrainment, and a spring-loaded lubrication contact is established between the first roller 210 and the second roller 220, thereby reducing friction between the roller assemblies 200 and increasing the service life of the full complement bearing 1.

Still further, the lubricant in the conventional full-load bearing and the lubricant in the full-load bearing 1 provided by the embodiment of the present utility model were observed by optical interference. The contact area between the rollers in the conventional full-load bearing without interface sliding contact is worn after operation, and the contact area between the first roller 210 and the second roller 220 of the full-load bearing 1 with interface sliding/without interface sliding contact forms a typical elastohydrodynamic lubricating oil film morphology, namely, the full-load bearing 1 provided by the embodiment of the utility model can realize effective lubrication, thereby prolonging the service life of the full-load bearing 1.

In one embodiment of the present utility model, as shown in fig. 3, 4, 5 and 8, the bearing body 100 further includes a porous material layer 130, the porous material layer 130 is provided with densely arranged air holes 131 inside, and the porous material layer 130 is disposed on a surface of the raceway 101, which contacts the first roller 210 and the second roller 220, so that an interface sliding effect of the first roller 210 and the second roller 220 in the raceway 101 is further improved through a hybrid running structure. Specifically, the side of the bearing inner race 110 adjacent to the raceway 101 is provided with a third surface 111, for example, and the side of the bearing outer race 120 adjacent to the raceway 101 is provided with a fourth surface 121, for example, when the bearing inner race 110 is fixed to another device, the bearing outer race 120 is used for rotation, and the porous material layer 130 is provided on the third surface 111. Referring to fig. 4, for example, the bearing inner ring 110 is provided with air inlet holes 102 at the side, the air inlet holes 102 are communicated with air holes 131 of the porous material layer 130, so that compressed air can be introduced from the air inlet holes 102, flows in the air holes 131 of the porous material 130, flows out from the surface of the porous material 130 adjacent to one side of the raceway 101, and forms a layer of air film 132 on the surface of the porous material layer 130. Because the lubricant does not have wettability when contacting with air, the lubricant is easy to generate interface sliding on the surface of the air film 132, thereby further improving the interface sliding capability between the roller assembly 200 and the roller path 101, realizing ultra-low friction between the roller assembly 200 and the roller path 101, forming interface sliding/sliding contact and interface sliding/non-sliding contact, ensuring that the interface sliding effect exists in the full-load bearing 1, and further reducing the friction when the full-load bearing 1 operates. In other embodiments of the utility model, for example when the bearing outer ring 120 is fixed, the porous material layer 130 may for example be provided only on the fourth surface 111, when the bearing inner ring 110 is used for rotation, the bearing outer ring 120 being provided with air inlet holes 102 for example at the sides.

In summary, in the embodiment of the present utility model, the roller assembly is disposed in the raceway of the bearing body, where the roller assembly includes a plurality of first rollers that are disposed with the oil-repellent layer and a plurality of second rollers that are not disposed with the oil-repellent layer, and the plurality of first rollers and the plurality of second rollers are alternately disposed in the raceway, so that when the full-load bearing is operated, the lubricant added in the raceway can generate interface sliding on the surface of the oil-repellent layer, so that the entrainment speed of the lubricant between the first rollers and the second rollers is no longer zero, and further, the lubricant between the first rollers and the second rollers forms effective lubrication through entrainment, thereby reducing the friction force of the roller assembly and improving the service life of the full-load bearing; in addition, the oleophobic layer can penetrate into the micropores of the first roller surface, which can still maintain the slip properties of the first roller surface when the oleophobic layer wears.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for the sake of brevity, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above embodiments only represent a few embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of the utility model should be assessed as that of the appended claims.

Claims (10)

1. A full complement bearing (1), characterized by comprising:

the bearing comprises a bearing body (100) and a bearing outer ring (120), wherein the bearing inner ring (110) is arranged adjacent to one side of the center of the bearing outer ring (120), and a raceway (101) is formed between the bearing inner ring (110) and the bearing outer ring (120);

a roller assembly (200) disposed within the raceway (101), the roller assembly (200) comprising a plurality of first rollers (210) and a plurality of second rollers (220), the plurality of first rollers (210) and the plurality of second rollers (220) being alternately disposed with respect to each other and being respectively rotatably coupled to the bearing body (100);

wherein each first roller (210) of the plurality of first rollers (210) comprises a first surface (211), and an intermediate layer (213) and an oleophobic layer (212) disposed in sequence on the first surface (211).

2. A full complement bearing (1), characterized by comprising:

a bearing body (100) in which a raceway (101) is formed;

a roller assembly (200) disposed within the raceway (101), the roller assembly (200) comprising a first roller (210) and a second roller (220), the first roller (210) and the second roller (220) being rotatably coupled to the bearing body (100), respectively;

the first roller (210) is provided with a first surface (211), the second roller (220) is provided with a second surface (221), an oleophobic layer (212) is arranged on the first surface (211), and the first roller (210) is contacted with the second roller (220) through the oleophobic layer (212) on the second surface (221).

3. The full complement bearing (1) according to claim 2, wherein the first rollers (210) are provided in plurality and the second rollers (220) are provided in plurality, the plurality of first rollers (210) and the plurality of second rollers (220) being alternately arranged in the raceway (101) with each other.

4. The full complement bearing (1) according to claim 2, characterized in that the first roller (210) comprises an intermediate layer (213) thereon, the oleophobic layer (212) being connected to the first surface (211) by means of the intermediate layer (213).

5. The full complement bearing (1) according to claim 2, characterized in that the first surface (211) is provided with micro-pores (214), the micro-pores (214) being provided with the oleophobic layer (212).

6. The full complement bearing (1) according to claim 2, wherein the oleophobic layer (212) is a fluorinated diamond-like coating.

7. The full complement bearing (1) according to claim 2, wherein the bearing body (100) comprises a flange (140), the flange (140) being arranged on opposite sides of the raceway (101) in a first direction; the first direction is parallel to an axial direction of the bearing body (100).

8. The full complement bearing (1) of claim 7 wherein the bearing body (100) comprises a bearing inner race (110) and a bearing outer race (120), the bearing inner race (110) disposed adjacent a central side of the bearing outer race (120), the bearing inner race (110) rotationally coupled to the bearing outer race (120) by the roller assembly (200), the flange (140) coupled to a side of the bearing outer race (120) adjacent the center, the raceway (101) formed between the bearing inner race (110), the bearing outer race (120) and the flange (140).

9. The full complement bearing (1) according to claim 2, wherein the first roller (210) and the second roller (220) are of spherical structure, the surface of the first roller (210) being the first surface (211).

10. The full complement bearing (1) according to claim 2, wherein the first roller (210) and the second roller (220) are of cylindrical configuration, the first roller (210) being flanked by the first surface (211).