CN217462892U - Self-lubricating joint bearing with replaceable inner ring - Google Patents

Abstract

The utility model discloses a self-lubricating joint bearing of removable inner circle, including bearing inner race and bearing inner circle, the bearing inner circle is the split type structure of assembling of at least by half first inner circle and the half inner circle butt joint amalgamation formation of second, and has constructed first self-lubricating liner and second self-lubricating liner on the ectosphere of half first inner circle and the half inner circle of second respectively. The utility model discloses because first half inner circle and the half inner circle of second are split type structure, consequently, when the self-lubricating liner takes place wearing and tearing, need not to change the complete set of bearing or destroy the bearing frame, only need to dismantle first half inner circle and the half inner circle of second get off, and it can to establish corresponding first self-lubricating liner and second self-lubricating liner again in first half inner circle and the half inner circle of second. Therefore, the maintenance or replacement cost of the bearing can be reduced, and the market competitiveness of the self-lubricating joint bearing product can be improved.

Description

Self-lubricating joint bearing with replaceable inner ring

Technical Field

The utility model relates to a bearing technical field, concretely relates to self-lubricating joint bearing of removable inner circle.

Background

The bearing frame is packed into with the outer lane when present self-lubricating joint bearing installation uses, because current self-lubricating joint bearing's self-lubricating liner sets up on the interior sphere of outer lane, in use because the liner wearing and tearing, has to change complete set of bearing, and bearing is torn open in addition and is traded and can produce the destruction to the bearing frame. The bearing seat is generally complex in shape and high in value, so that the maintenance or replacement cost is high.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art, the utility model provides a self-lubricating joint bearing of removable inner circle, it mainly solves prior art's self-lubricating joint bearing maintenance or the higher technical problem of replacement cost.

In order to achieve the purpose, the utility model is realized by the following technical proposal:

the utility model provides a self-lubricating joint bearing of removable inner circle, includes bearing inner race and bearing inner circle, and the bearing inner circle is the split type structure of assembling that is formed by half first inner circle and half second inner circle butt joint amalgamation at least, and has constructed first self-lubricating liner and second self-lubricating liner on the ectosphere of half first inner circle and half second inner circle respectively.

Furthermore, the first half inner ring and the second half inner ring are both in a semicircular structure, and the first half inner ring and the second half inner ring are in butt joint and are spliced to form a bearing inner ring in a full-circle structure.

Furthermore, a first arc-shaped groove with two ends respectively extending to two butt joint end faces of the first half inner ring is formed in the outer spherical surface of the first half inner ring, a second arc-shaped groove with two ends respectively extending to two butt joint end faces of the second half inner ring is formed in the outer spherical surface of the second half inner ring, when the first half inner ring and the second half inner ring are in butt joint to form a bearing inner ring of a full-circle structure, the first arc-shaped groove and the second arc-shaped groove are in butt joint to form a closed annular groove structure, and the first self-lubricating liner and the second self-lubricating liner are respectively built in the first arc-shaped groove and the second arc-shaped groove.

Furthermore, the groove depth of the first arc-shaped groove and the second arc-shaped groove is 0.2 mm-0.6 mm.

Further, the built-up surfaces of the first and second self-lubricating liners on the outer spherical surfaces of the respective first and second half inner rings are sized to cover at least the contact surface between the bearing outer ring and the bearing inner ring after being fitted in place.

Further, the first self-lubricating liner and the second self-lubricating liner are both of high polymer material liner structures.

Based on the same invention concept, the utility model also provides a production method of the self-lubricating spherical plain bearing of removable inner circle of above arbitrary, including the following step:

s1, prefabricating a first half inner ring and a second half inner ring which can be butted and spliced to form a bearing inner ring with a full-circle structure; a first arc-shaped groove and a second arc-shaped groove which can be butted to form a closed annular groove structure are respectively arranged on the outer spherical surfaces of the first half inner ring and the second half inner ring;

s2, constructing a first self-lubricating liner and a second self-lubricating liner in the first arc-shaped groove of the first half inner ring and the second arc-shaped groove of the second half inner ring respectively;

s3, first half inner rings with first self-lubricating liners built on the outer spherical surfaces are firstly installed into inner holes of the bearing outer rings, and then second half inner rings with second self-lubricating liners built on the outer spherical surfaces are installed into vacant positions of the inner holes of the bearing outer rings, so that the first half inner rings and the second half inner rings are in butt joint to form bearing inner rings of a full-circle structure.

Further, in step S1, prefabricating the bearing inner ring of the integral full-circle structure, then uniformly dividing the bearing inner ring into two halves along the axial direction of the bearing inner ring by wire cutting, then filling each butt joint end face of the first half inner ring and the second half inner ring with a high polymer material, and milling the high polymer material on each butt joint end face by machining, so that the bearing inner ring of the full-circle structure can be formed after the first half inner ring and the second half inner ring are butt-jointed and spliced.

Further, in step S2, polymer materials are sprayed in the first arc-shaped groove of the first half inner ring and the second arc-shaped groove of the second half inner ring through a spraying process, after the polymer materials are solidified, the polymer materials formed in the first arc-shaped groove and the second arc-shaped groove are turned to form a first self-lubricating liner and a second self-lubricating liner which are matched with the inner spherical surface of the bearing outer ring on the outer spherical surfaces of the first half inner ring and the second half inner ring respectively.

Further, in step S1 and/or step S2, a positioning tool for positioning the first half inner ring and the second half inner ring is provided, the positioning tool comprises a mandrel, an end cover and a bolt, the outer diameter of the mandrel is matched with the inner diameter of a through hole of a bearing inner ring formed by splicing the first half inner ring and the second half inner ring, an abutting end portion is formed at one end of the mandrel, the end cover is connected to the other end, far away from the abutting end portion, of the mandrel through the bolt, and the first half inner ring and the second half inner ring are clamped and fastened through mutual matching of the abutting end portion and the end cover to be positioned on the mandrel in a clasping mode.

The technical scheme has the following advantages or beneficial effects:

in the self-lubricating spherical plain bearing with the replaceable inner ring, the bearing inner ring is of a split type assembly structure formed by butt joint and assembly of the first half inner ring and the second half inner ring, and compared with the spherical plain bearing with the self-lubricating liner arranged on the inner spherical surface of the bearing outer ring in the prior art, the first self-lubricating liner and the second self-lubricating liner are respectively constructed on the outer spherical surfaces of the first half inner ring and the second half inner ring, so that the self-lubricating spherical plain bearing with the replaceable inner ring is formed, when in use, the bearing outer ring can be rotated into the bearing seat, then the first half inner ring constructed with the first self-lubricating liner and the second half inner ring constructed with the second self-lubricating liner are successively arranged into the bearing outer ring, because the first half inner ring and the second half inner ring are of the split type structure, when the self-lubricating liners are worn, the whole bearing does not need to be replaced or the bearing seat is damaged, only the first half inner ring and the second half inner ring need to be disassembled, and the corresponding first self-lubricating liner and the second self-lubricating liner are reconstructed on the first half inner ring and the second half inner ring or the first half inner ring and the second half inner ring which are newly replaced and constructed with the first self-lubricating liner and the second self-lubricating liner are reconstructed. Therefore, the maintenance or replacement cost of the bearing can be reduced, and the market competitiveness of the self-lubricating joint bearing product can be improved.

Drawings

Fig. 1 is a schematic perspective view of a self-lubricating spherical plain bearing according to an embodiment of the present invention.

Fig. 2 is a structural section view of the self-lubricating spherical plain bearing according to the embodiment of the present invention.

Fig. 3 is a first state diagram of an assembly process of the self-lubricating spherical plain bearing according to the embodiment of the present invention.

Fig. 4 is a state diagram of an assembly process of the self-lubricating spherical plain bearing according to the embodiment of the present invention.

Fig. 5 is a schematic perspective view of the first half inner ring and the second half inner ring positioned on the positioning tool according to the embodiment of the present invention.

Fig. 6 is a schematic view of another angle three-dimensional structure of the first half inner ring and the second half inner ring positioned on the positioning tool according to the embodiment of the present invention.

Fig. 7 is a sectional view of a first half inner ring and a second half inner ring positioned on a positioning tool according to an embodiment of the present invention.

Description of reference numerals:

1. bearing inner race, 2, bearing inner race, 3, first self-lubricating liner, 4, second self-lubricating liner, 5, location frock, 21, first half inner race, 22, half inner race of second, 51, dabber, 52, end cover, 53, bolt, 211, first arc recess, 221, second arc recess, 511, butt tip.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1 to 7, an embodiment of the present invention provides a self-lubricating spherical plain bearing with a replaceable inner ring, which includes a bearing outer ring 1 and a bearing inner ring 2, wherein the bearing inner ring 2 is a split type assembly structure formed by at least butt-jointing and assembling a first half inner ring 21 and a second half inner ring 22, and a first self-lubricating liner 3 and a second self-lubricating liner 4 are respectively built on the outer spherical surfaces of the first half inner ring 21 and the second half inner ring 22. It can be understood that, in this embodiment, the bearing inner ring 2 is a split assembly structure formed by butt-jointing and assembling the first half inner ring 21 and the second half inner ring 22, and compared with the joint bearing in which the self-lubricating liner is disposed on the inner spherical surface of the bearing outer ring in the prior art, the first self-lubricating liner 3 and the second self-lubricating liner 4 are respectively configured on the outer spherical surfaces of the first half inner ring 21 and the second half inner ring 22, so as to form the self-lubricating joint bearing with replaceable inner rings, when in use, the bearing outer ring 1 can be rotated into the bearing seat, then the first half inner ring 21 configured with the first self-lubricating liner 3 and the second half inner ring 22 configured with the second self-lubricating liner 4 are sequentially installed into the bearing outer ring 1, because the first half inner ring 21 and the second half inner ring 22 are split structures, when the self-lubricating liners are worn, there is no need to replace the whole bearing or destroy the bearing seat, only the first half inner ring 21 and the second half inner ring 22 need to be detached, and the corresponding first self-lubricating liner 3 and second self-lubricating liner 4 are reconstructed on the first half inner ring 21 and the second half inner ring 22 or the first half inner ring 21 and the second half inner ring 22 with the first self-lubricating liner 3 and the second self-lubricating liner 4 are reconstructed. Therefore, the maintenance or replacement cost of the bearing can be reduced, and the market competitiveness of the self-lubricating joint bearing product can be improved.

Referring to fig. 1 and fig. 2, in a preferred embodiment, the first half inner ring 21 and the second half inner ring 22 are both semi-circular structures, and the first half inner ring 21 and the second half inner ring 22 are butt-jointed to form the bearing inner ring 2 with a full-circle structure.

Referring to fig. 1 to 7, in a preferred embodiment, the outer spherical surface of the first half inner ring 21 is provided with a first arc-shaped groove 211 having two ends respectively extending to two joint end surfaces of the first half inner ring 21, the outer spherical surface of the second half inner ring 22 is provided with a second arc-shaped groove 221 having two ends respectively extending to two joint end surfaces of the second half inner ring 22, when the first half inner ring 21 and the second half inner ring 22 are jointed and spliced to form the bearing inner ring 2 of a full circle structure, the first arc-shaped groove 211 and the second arc-shaped groove 221 are jointed and spliced to form a closed annular groove structure, and the first self-lubricating liner 3 and the second self-lubricating liner 4 are respectively built in the first arc-shaped groove 211 and the second arc-shaped groove 221. It is understood that, in the present embodiment, by providing the first arc-shaped groove 211 and the second arc-shaped groove 221 on the outer spherical surface of the first inner half ring 21 and the outer spherical surface of the second inner half ring 22, respectively, the first self-lubricating liner 3 and the second self-lubricating liner 4 can be more firmly bonded in the first arc-shaped groove 211 and the second arc-shaped groove 221, respectively.

Referring to fig. 5 to 7, in a preferred embodiment, the first arc-shaped groove 211 and the second arc-shaped groove 221 have a groove depth of 0.2mm to 0.6 mm. In the present embodiment, it is preferable that the groove depths of the first arc-shaped groove 211 and the second arc-shaped groove 221 are configured to be 0.4 mm.

Referring to fig. 1 to 4 of the drawings, in a preferred embodiment, the building surfaces of the first and second self-lubricating liners 3, 4 on the outer spherical surfaces of the respective first and second half- cones 21, 22 are sized so as to cover at least the contact surfaces between the bearing outer ring 1 and the bearing inner ring 2 when assembled in place. When the self-lubricating spherical plain bearing is used, the outer spherical surface of the bearing inner ring 2 and the inner spherical surface of the bearing outer ring 1 are not in direct contact, but are in contact through the first self-lubricating liner 3 and the second self-lubricating liner 4 to generate a lubricating effect.

Referring to fig. 1 to 4 of the drawings, in a preferred embodiment, the first self-lubricating liner 3 and the second self-lubricating liner 4 are both of a polymeric liner structure. In the present embodiment, the polymer material for forming the self-lubricating liner is the prior art, and for example, a formula material for forming the self-lubricating liner is disclosed in the document CN 102408711A. The polymer material of this embodiment may also be selected from polymer materials used in the prior art for molding the mold liner.

Referring to fig. 1 to 7, an embodiment of the present invention further provides a method for producing a self-lubricating spherical plain bearing with a replaceable inner ring, including the following steps:

s1, prefabricating a first half inner ring 21 and a second half inner ring 22 which can be butted and spliced to form a bearing inner ring 2 with a full-circle structure; a first arc-shaped groove 211 and a second arc-shaped groove 221 which can be butted to form a closed annular groove structure are respectively arranged on the outer spherical surfaces of the first half inner ring 21 and the second half inner ring 22;

s2, building a first self-lubricating liner 3 and a second self-lubricating liner 4 in the first arc-shaped groove 211 of the first inner half ring 21 and the second arc-shaped groove 221 of the second inner half ring 22, respectively;

s3, the first half inner ring 21 with the first self-lubricating liner 3 on the outer spherical surface is firstly arranged in the inner hole of the bearing outer ring 1, and then the second half inner ring 22 with the second self-lubricating liner 4 on the outer spherical surface is arranged in the vacant position of the inner hole of the bearing outer ring 1, so that the first half inner ring 21 and the second half inner ring 22 are spliced to form the bearing inner ring 2 with a full circle structure.

Referring to fig. 1 to 7, in a preferred embodiment, in step S1, a bearing inner ring 2 with an integral full circle structure is prefabricated, then the bearing inner ring 2 is uniformly split into two halves along an axial direction of the bearing inner ring 2 by wire cutting, then each butt joint end surface of the first half inner ring 21 and the second half inner ring 22 is filled with a polymer material, and then the polymer material on each butt joint end surface is milled flat by machining, so that the bearing inner ring 2 with the full circle structure can be formed after the first half inner ring 21 and the second half inner ring 22 are butt-jointed and spliced. The bearing inner ring 2 is split by the wire cutting method to form the first half inner ring 21 and the second half inner ring 22, which is convenient and fast, and is beneficial to reducing the production cost, but the parts of the butt joint end surfaces of the first half inner ring 21 and the second half inner ring 22, which are lost by the wire cutting, need to be made of high polymer materials. However, it should be understood by those skilled in the art that in other embodiments, the first half inner ring 21 and the second half inner ring 22 are not limited to the specific manufacturing method disclosed in this embodiment, and may be formed by other methods, for example, a wire-cut expendable portion is directly reserved in the prefabricated bearing inner ring 2, so that the first half inner ring 21 and the second half inner ring 22 formed by cutting through a wire-cut may be directly split to form the bearing inner ring 2 with a full-circle structure. Or the first half inner ring 21 and the second half inner ring 22 of the bearing inner ring 2 which can be directly spliced to form a whole round structure are respectively prefabricated directly through finish machining.

Referring to fig. 5 to 7, in a preferred embodiment, in step S2, a spray gun is used to spray polymer material into the first arc-shaped groove 211 of the first half inner ring 21 and the second arc-shaped groove 221 of the second half inner ring 22, and after the polymer material is solidified, the polymer material formed in the first arc-shaped groove 211 and the second arc-shaped groove 221 is turned to form a first self-lubricating liner 3 and a second self-lubricating liner 4 respectively on the outer spherical surfaces of the first half inner ring 21 and the second half inner ring 22, which are matched with the inner spherical surface of the bearing outer ring 1.

Referring to fig. 5 to 7, in a preferred embodiment, in step S1 and/or step S2, a positioning tool 5 for positioning a first half inner ring 21 and a second half inner ring 22 is provided, the positioning tool 5 includes a mandrel 51, an end cap 52 and a bolt 53, an outer diameter of the mandrel 51 is matched with an inner diameter of a through hole of a bearing inner ring 2 formed by splicing the first half inner ring 21 and the second half inner ring 22, an abutting end 511 is formed at one end of the mandrel 51, the end cap 52 is connected to the other end of the mandrel 51 far away from the abutting end 511 by the bolt 53, and the first half inner ring 21 and the second half inner ring 22 are clamped and positioned on the mandrel 51 by mutual matching of the abutting end 511 and the end cap 52. It can be understood that, the positioning tool 5 can clamp and fix the first half inner ring 21 and the second half inner ring 22, and then the first arc-shaped groove 211 and the second arc-shaped groove 221 can be quickly and conveniently machined on the outer spherical surfaces of the first half inner ring 21 and the second half inner ring 22. And after the first arc-shaped groove 211 and the second arc-shaped groove 221 of the first half inner ring 21 and the second half inner ring 22 are respectively sprayed with the high polymer material and cured and molded, the first half inner ring 21 and the second half inner ring 22 can be clamped and fixed through the positioning tool 5, and then the first self-lubricating liner 3 and the second self-lubricating liner 4 on the outer spherical surfaces of the first half inner ring 21 and the second half inner ring 22 can be quickly and conveniently machined to be matched with the inner spherical surface of the bearing outer ring 1.

The above-mentioned embodiments are only used for illustrating the technical solution of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; these modifications and substitutions do not depart from the spirit and scope of the embodiments of the present invention, and therefore, all other embodiments obtained by those skilled in the art without any creative effort fall within the protection scope of the present invention.

Claims (6)

1. The utility model provides a self-lubricating joint bearing of removable inner circle, includes bearing inner race (2), its characterized in that: the bearing inner ring (2) is a split type assembling structure formed by butt joint and splicing of at least a first half inner ring (21) and a second half inner ring (22), and a first self-lubricating liner (3) and a second self-lubricating liner (4) are respectively constructed on the outer spherical surfaces of the first half inner ring (21) and the second half inner ring (22).

2. The self-lubricating spherical plain bearing with a replaceable inner ring according to claim 1, wherein: the first half inner ring (21) and the second half inner ring (22) are both in a semicircular structure, and the first half inner ring (21) and the second half inner ring (22) are spliced to form the bearing inner ring (2) in a full-circle structure.

3. The self-lubricating spherical plain bearing with a replaceable inner ring according to claim 1, wherein: the bearing inner ring is characterized in that a first arc-shaped groove (211) with two ends extending to two butt joint end faces of the first half inner ring (21) is formed in the outer spherical surface of the first half inner ring (21), a second arc-shaped groove (221) with two ends extending to two butt joint end faces of the second half inner ring (22) is formed in the outer spherical surface of the second half inner ring (22), when the first half inner ring (21) and the second half inner ring (22) are in butt joint and spliced to form a bearing inner ring (2) of a full-circle structure, the first arc-shaped groove (211) and the second arc-shaped groove (221) are in butt joint and spliced to form a closed annular groove structure, and the first self-lubricating gasket (3) and the second self-lubricating gasket (4) are respectively built in the first arc-shaped groove (211) and the second arc-shaped groove (221).

4. The self-lubricating spherical bearing with replaceable inner ring according to claim 3, wherein: the groove depth of the first arc-shaped groove (211) and the second arc-shaped groove (221) is 0.2 mm-0.6 mm.

5. The self-lubricating spherical plain bearing with a replaceable inner ring according to claim 3, wherein: the building surfaces of the first self-lubricating liner (3) and the second self-lubricating liner (4) on the outer spherical surfaces of the corresponding first half inner ring (21) and second half inner ring (22) are sized to cover at least the contact surface between the bearing outer ring (1) and the bearing inner ring (2) when assembled in place.

6. The self-lubricating spherical plain bearing with a replaceable inner ring according to any one of claims 1 to 5, wherein: the first self-lubricating liner (3) and the second self-lubricating liner (4) are both made of high polymer material liner structures.

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