Crossed roller isolation block and crossed roller bearing

Abstract

The utility model discloses a crossed roller isolation block and a crossed roller bearing, and belongs to the technical field of bearing roller isolation. The isolation block comprises a block body, the two sides of the block body are provided with limiting concave faces, the curvature of each limiting concave face is a, the curvature of each roller is b, a is larger than b, through grooves are formed in the circumferential faces of the block body, and each through groove is formed in the center of the corresponding circumferential face. And the oil storage groove is formed in the limiting concave surface. The technical problem that the lubricating gap of an existing isolation block is small is solved.

Description

Technical Field

[0001] This utility model relates to the field of bearing roller isolation technology, and in particular to a cross roller isolation block and a cross roller bearing. Background Technology

[0002] Crossed roller bearings employ a cross-arrangement, meaning the rollers are placed at 90° intervals, allowing the bearing to simultaneously withstand radial and axial forces, resulting in high overall load-bearing capacity. Due to the cross-arrangement of the rollers, traditional cages are difficult to use in crossed roller bearings, and even with a cage, it is challenging to properly install and arrange the crossed rollers. Therefore, spacers are used to separate the rollers.

[0003] Spacers are located between adjacent rollers to ensure that the rollers do not come into contact with each other or rub against each other during rolling, thus maintaining smooth roller movement. Unlike cages, which are formed into pockets within the overall structure and have a relatively stable structure, allowing for clearance between the spacers and rollers to facilitate lubrication, in crossed roller bearings, each roller is limited by two independent spacers on either side. During rotation, the spacers are in close contact with the roller, resulting in a small clearance between them, making it difficult for lubricating oil to pass through and provide lubrication. Therefore, current spacers suffer from the technical problem of insufficient lubrication clearance. Utility Model Content

[0004] The main purpose of this utility model is to provide a cross roller separator and a cross roller bearing, which aims to solve the technical problem of the small lubrication gap between the separator and the roller.

[0005] To achieve the above objectives, the present invention proposes a cross roller separator block for isolating rollers, comprising:

[0006] A block has limiting concave surfaces on both sides, the curvature of the limiting concave surfaces is a, the curvature of the roller is b, a>b, and a through groove is formed on the circumferential surface of the block, with each through groove being formed at the center of each circumferential surface.

[0007] An oil storage tank is formed within the limiting concave surface.

[0008] Optionally, in one embodiment of the present invention, the four through grooves are arc-shaped grooves, so that the block forms four columnar corners, and the oil storage tank includes a first oil storage tank opened in the core of the limiting concave surface and a second oil storage tank at the columnar corner of the limiting concave surface.

[0009] Optionally, in one embodiment of the present invention, the block is further provided with a first oil guiding passage, which extends from the first oil storage tank to the through groove.

[0010] Optionally, in one embodiment of the present invention, the block is further provided with a second oil guiding passage, which extends from the second oil storage tank to the peripheral surface.

[0011] Optionally, in one embodiment of the present invention, the second oil guiding passage gradually expands from the second oil storage tank to the circumferential surface.

[0012] Optionally, in one embodiment of the present invention, some of the oil storage tanks are circular blind hole oil storage tanks, and some of the oil storage tanks are circular stepped blind hole oil storage tanks.

[0013] Optionally, in one embodiment of the present invention, the periphery of the oil storage tank is rounded.

[0014] Optionally, in one embodiment of the present invention, the through groove and the columnar corner are smoothly connected.

[0015] Optionally, in one embodiment of this utility model, the isolation block is an integral structure.

[0016] To achieve the above objectives, this utility model also proposes a crossed roller bearing, including the spacer block described above.

[0017] Compared with the prior art, this utility model can achieve at least the following beneficial effects. Each isolation block has two limiting concave surfaces, each of which contacts and limits the movement of a roller. One of the two limiting concave surfaces forms an inward curve in the horizontal direction, and the other forms an inward curve in the vertical direction, to facilitate the limiting of the intersecting rollers. It should be noted that the horizontal and vertical directions mentioned here are for ease of understanding and are not limitations on the limiting concave surfaces. If the rollers are not arranged in a positive horizontal and positive vertical direction, the opening of the limiting concave surfaces can be adjusted accordingly based on the arrangement of the rollers. Because the limiting concave surface contacts the curved surface of the roller, to ensure a suitable lubrication clearance between them, the curvature of the limiting concave surface is designed to be greater than that of the roller. This results in a greater degree of bending of the limiting concave surface than the roller. When the roller abuts against the limiting concave surface, a larger lubrication clearance exists in the middle between the two surfaces, allowing sufficient lubricating oil to flow between them and ensuring effective lubrication of the roller. This solves the technical problem of insufficient lubrication clearance in current separators. Furthermore, an oil reservoir is provided on the limiting concave surface. This reservoir allows some lubricating oil to be temporarily stored as it flows through the lubrication clearance, supplying oil to the roller surface during rotation and ensuring smooth roller rotation. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of the cross roller isolation block of this utility model;

[0020] Figure 2 This is a structural schematic diagram of a cross roller isolation block of this utility model from another angle;

[0021] Figure 3 This is a front view of a cross roller separator block according to the present invention;

[0022] Figure 4 This is a top view of the spacer block in contact with the roller.

[0023] Explanation of icon numbers:

[0024] 100, block; 110, limiting concave surface; 120, through groove; 130, lubrication gap; 140, columnar edge; 200, roller; 310, first oil reservoir; 320, second oil reservoir; 410, first oil guide passage; 420, second oil guide passage;

[0025] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "connection," "fixing," etc., should be interpreted broadly. For example, "fixing" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] Reference Figures 1-4 This utility model proposes a cross roller 200 isolation block for isolating the rollers 200, comprising:

[0031] Block 100, with limiting concave surfaces 110 on both sides of block 100, the curvature of limiting concave surfaces 110 is a, the curvature of roller 200 is b, a>b, and through grooves 120 are opened on the circumferential surface of block 100, with each through groove 120 being opened at the center of each circumferential surface.

[0032] An oil storage tank is provided within the limiting concave surface 110.

[0033] Each isolation block 100 has two limiting concave surfaces 110, each of which contacts and limits the movement of a roller 200. One of the limiting concave surfaces 110 is concave in the horizontal direction, and the other is concave in the vertical direction, to facilitate the limiting of the intersecting rollers 200. It should be noted that the horizontal and vertical directions mentioned here are for ease of understanding and are not limitations on the limiting concave surfaces 110. If the rollers 200 are not arranged in a perfectly horizontal or perfectly vertical direction, the opening of the limiting concave surfaces 110 can be adjusted accordingly based on the arrangement of the rollers 200. Since the limiting concave surface 110 contacts the curved surface of the roller 200, in order to ensure a suitable lubrication gap 130 between the limiting concave surface 110 and the roller 200, the curvature a of the limiting concave surface 110 is designed to be greater than the curvature b of the roller 200. This results in a greater degree of curvature of the limiting concave surface 110 than that of the roller 200. When the roller 200 abuts against the limiting concave surface 110, a larger lubrication gap 130 will be generated between the limiting concave surface 110 and the roller 200. During the rotation of the bearing, this lubrication gap 130 will not shrink further, so that sufficient lubricating oil can flow between the limiting concave surface 110 and the roller 200, ensuring the lubrication effect of the roller 200 and solving the technical problem of the small lubrication gap 130 in the current isolation block. In addition, an oil reservoir is provided on the limiting concave surface 110. After the oil reservoir is provided, when the lubricating oil flows through the lubrication gap 130, some of the lubricating oil can be temporarily stored in the oil reservoir. The lubricating oil in the oil reservoir supplies oil to the surface of the roller 200 during the rotation of the roller 200, ensuring the smoothness of the rotation of the roller 200.

[0034] Understandably, the curvature difference between the limiting concave surface 110 and the roller 200 is not necessarily better the larger it is; it needs to be controlled within a certain range. When the curvature difference increases, the lubrication gap 130 between the limiting concave surface 110 and the roller 200 also increases. However, the spacer block also has the function of wrapping around the roller 200 to a certain extent to limit its movement. If the curvature difference increases excessively, the wrapping effect of the limiting concave surface 110 on the roller 200 will decrease, thus affecting the limiting effect. Therefore, the curvature difference can be specifically determined according to the specific bearing size, roller size, bearing rotation requirements, etc.

[0035] Furthermore, the oil storage tank includes a first oil storage tank 310 and a second oil storage tank 320, wherein the first oil storage tank 310 is located in the core of the limiting concave surface 110, and the second oil storage tank 320 is located at the columnar corner 140 of the limiting concave surface 110.

[0036] A through groove 120 is formed on the circumferential surface of the block 100. The through groove 120 is arc-shaped, which causes the block 100 to form four columnar corners 140. Since the curvature of the limiting concave surface 110 is greater than that of the roller 200, and the columnar corners 140 are located at the edge of the limiting concave surface 110, the contact between the columnar corners 140 and the roller 200 is relatively tight when the roller 200 contacts the limiting concave surface 110. A second oil reservoir 320 is formed at this connection surface, which can produce a better lubrication effect on the roller 200.

[0037] After the through groove 120 is created, a large gap exists between the through groove 120 and the roller 200. Therefore, lubricating oil can enter the limiting recess 110 through the gap between the through groove 120 and the roller 200, ensuring that there is sufficient lubricating oil flowing between the roller 200 and the spacer block. In addition, the more flow paths the lubricating oil has, the faster the lubricating oil flows between the roller 200 and the spacer block. Besides lubrication, the rapid flow of lubricating oil can also achieve rapid heat dissipation between the roller 200 and the spacer block.

[0038] Furthermore, the through groove 120 not only enables a lightweight design for the isolation block but also optimizes its load-bearing structure. During the high-speed operation of the bearing, the rollers 200 compress the isolation block, generating significant force. The isolation block is roughly radial in shape, and the force borne by the core of the isolation block can be effectively dispersed to the surrounding area, preventing deformation of the isolation block caused by prolonged operation of the rollers 200.

[0039] Furthermore, in one embodiment, the block 100 also has a first oil guiding passage 410, which connects the first oil storage tank 310 and the through groove 120. The number of first oil guiding passages 410 can be one or more, preferably two. Specifically, the two first oil guiding passages 410 are located on both sides of the first oil storage tank 310 and are symmetrical. The first oil guiding passage 410 in each limiting concave surface 110 corresponds to the bending direction of the limiting concave surface 110. For example, if the limiting concave surface 110 is bent in the horizontal direction, then the first oil guiding passage 410 in the limiting concave surface 110 is in the horizontal direction, so that lubricating oil can enter or flow out of the first oil storage tank 310 through the first oil guiding passage 410.

[0040] Furthermore, the block 100 also has a second oil guiding passage 420, which connects the second oil reservoir 320 and the peripheral surface of the block 100. Unlike the first oil reservoir 310, the second oil reservoir 320 is located at the corner of the limiting concave surface 110, and its contact with the roller 200 is relatively tight. Therefore, it is difficult for the second oil reservoir 320 to complete oil storage during the free flow of lubricating oil. For this reason, the second oil guiding passage 420 is provided to connect the second oil reservoir 320 to the peripheral surface, so that the lubricating oil can enter the second oil reservoir 320 through the second oil guiding passage 420. Unlike the first oil guide passage 410, each second oil reservoir 320 is connected to only one second oil guide passage 420, and the connection between the second oil guide passage 420 and the second oil reservoir 320 is narrower, while the connection between the second oil guide passage 420 and the circumferential surface is wider. That is, the second oil guide passage 420 gradually expands from the second oil reservoir 320 to the circumferential surface to facilitate the flow of lubricating oil into the second oil reservoir 320 and restrict the flow of lubricating oil out of the second oil reservoir 320.

[0041] Furthermore, the structure of the oil reservoir can be either a circular blind hole structure or a circular stepped blind hole structure. In one embodiment, one of the two first oil reservoirs 310 has a circular blind hole structure, and the other has a circular stepped blind hole structure; both second oil reservoirs 320 have circular blind hole structures. To prevent the formation of flow dead zones within the oil reservoirs, the depth of the oil reservoirs should not be too deep; a depth of 1-3 mm can be selected. If the oil reservoir is too deep, a flow dead zone may form at the bottom of the oil reservoir. The lubricating oil in the flow dead zone does not participate in the overall lubricating oil flow within the bearing, which has an adverse effect on the lubrication of the bearing.

[0042] Furthermore, in another embodiment, to reduce friction between the oil reservoir and the roller 200, the periphery of the oil reservoir can be designed as a rounded corner, reducing friction while preventing wear and scratches caused by friction between the edge of the oil reservoir and the roller 200 during rotation. The through groove 120 and the columnar corner 140 are connected to form the peripheral surface of the block 100. To facilitate the flow of lubricating oil and reduce friction during the movement of the isolation block, the through groove 120 and the columnar corner 140 are smoothly connected.

[0043] In addition, to ensure the structural strength of the isolation block, each structure in the isolation block is processed and formed on the basis of the overall structure, avoiding the formation of seams or weak points on the surface of the isolation block, so as to improve the service life of the isolation block.

[0044] To achieve the above objectives, a crossed roller 200 bearing is also proposed, comprising an inner ring, an outer ring, rollers 200, and a spacer block as described above. Specifically, the specific structure of the spacer block refers to the above embodiments. Since this bearing adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated here.

[0045] The above are merely optional embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of the specification and drawings of this utility model, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A cross roller separator block for isolating rollers, characterized in that, include: A block has limiting concave surfaces on both sides, the curvature of the limiting concave surfaces is a, the curvature of the roller is b, a>b, and a through groove is formed on the circumferential surface of the block, with each through groove being formed at the center of each circumferential surface. An oil storage tank is formed within the limiting concave surface.

2. The cross roller separator block as described in claim 1, characterized in that, The four through grooves are arc-shaped grooves, which make the block form four columnar corners. The oil storage tank includes a first oil storage tank opened in the core of the limiting concave surface and a second oil storage tank at the columnar corner of the limiting concave surface.

3. The cross roller separator block as described in claim 2, characterized in that, The block also has a first oil guiding passage, which extends from the first oil storage tank to the through groove.

4. The cross roller separator block as described in claim 3, characterized in that, The block also has a second oil guiding passage, which extends from the second oil storage tank to the peripheral surface.

5. The cross roller separator block as described in claim 4, characterized in that, The second oil guiding passage gradually expands from the second oil reservoir to the circumferential surface.

6. The cross roller separator block as described in claim 1, characterized in that, Some of the oil storage tanks are circular blind hole oil storage tanks, and some of the oil storage tanks are circular stepped blind hole oil storage tanks.

7. The cross roller separator block as described in claim 1, characterized in that, The perimeter of the oil storage tank is rounded.

8. The cross roller separator block as described in claim 2, characterized in that, The through groove is smoothly connected to the columnar corner.

9. The cross roller separator block as described in claim 2, characterized in that, The isolation block is a single, integral structure.

10. A crossed roller bearing, characterized in that, Includes the isolation block as described in any one of claims 1-9.

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