CN217055968U - Moulding type self-lubricating joint bearing - Google Patents
Moulding type self-lubricating joint bearing Download PDFInfo
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- CN217055968U CN217055968U CN202220864058.0U CN202220864058U CN217055968U CN 217055968 U CN217055968 U CN 217055968U CN 202220864058 U CN202220864058 U CN 202220864058U CN 217055968 U CN217055968 U CN 217055968U
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- 238000000465 moulding Methods 0.000 title claims abstract description 18
- 238000001746 injection moulding Methods 0.000 claims abstract description 13
- 229920001903 high density polyethylene Polymers 0.000 claims abstract description 8
- 239000000243 solution Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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Abstract
The utility model discloses a mould type self-lubricating joint bearing, including inner circle, outer lane and the self-lubricating moulding liner of injection moulding between inner circle and outer lane of coaxial setting, the interior sphere of outer lane has middle curved surface portion and the side curved surface portion that is located middle curved surface portion both sides, and the camber of middle curved surface portion is greater than the camber of side curved surface portion. The utility model discloses because the camber of middle curved surface portion is greater than the camber of side curved surface portion, the die cavity size that can increase between inner circle and the outer lane on the one hand is with the thickness of bodiness self-lubricating slip form plastic liner, and on the other hand, the sphere can be so that injection moulding's self-lubricating slip form plastic liner can not produce the phenomenon of skidding and then improve joint bearing's stability in use about the direction relatively in the outer lane of variable curvature structure.
Description
Technical Field
The utility model relates to a bearing technical field, concretely relates to mould type self-lubricating joint bearing.
Background
Self-lubricating joint bearings are more selected for use in the joint bearing in the aviation field to meet the requirements of aviation products on long service life and high environmental adaptability, and meanwhile, the fine joint bearings are required to be used in many occasions such as low-power turboshaft engines for the purpose of weight reduction. The existing molded self-lubricating spherical plain bearing forms a molded gasket between the spherical surfaces of an inner ring and an outer ring of the spherical plain bearing through an injection molding process, but the molded gasket formed between the spherical surfaces of the inner ring and the outer ring through injection molding of the molded spherical plain bearing in the prior art possibly has the phenomenon that the molded gasket slips relative to the outer ring in the use process of the spherical plain bearing, so that the use stability of the spherical plain bearing is influenced.
SUMMERY OF THE UTILITY MODEL
To prior art not enough, the utility model provides a mould type self-lubricating joint bearing, what its main solution was moulded the mould liner among the current joint bearing probably produces the technical problem of the defect of skidding in relative outer lane.
In order to achieve the purpose, the utility model is realized by the following technical proposal:
a molding type self-lubricating spherical plain bearing comprises an inner ring, an outer ring and a self-lubricating molding liner, wherein the inner ring and the outer ring are coaxially arranged, the self-lubricating molding liner is formed between the inner ring and the outer ring in an injection molding mode, the inner spherical surface of the outer ring is provided with a middle curved surface part and side curved surface parts located on two sides of the middle curved surface part, and the curvature of the middle curved surface part is larger than that of the side curved surface parts.
Further, the curvature of the inner spherical surface of the inner race is greater than the curvature of the side curved surface portion of the inner spherical surface of the outer race and less than the curvature of the middle curved surface portion of the inner spherical surface of the outer race.
Further, defining the width of the outer ring as H, the inner spherical surface of the outer ring is configured to form a minimum gap thickness t1 between H/15-H/5 and the outer spherical surface of the inner ring, and the inner spherical surface of the outer ring is configured to form a maximum gap thickness t2 between H/2 and the outer spherical surface of the inner ring.
Further, the inner spherical surface of the outer race is configured to have a minimum gap thickness t1 between it and the outer spherical surface of the inner race at H/10.
Further, t1 is 0.279 ± 0.076mm, and t1< t2<0.559 mm.
The technical scheme has the following advantages or beneficial effects:
in the molding type self-lubricating spherical plain bearing of the utility model, the inner spherical surface of the outer ring of the spherical plain bearing consists of a middle curved surface part and side curved surface parts positioned at the two sides of the middle curved surface part, meanwhile, the curvature of the middle curved surface part is configured to be larger than that of the side curved surface part, so that, so that the self-lubricating molding gasket formed between the spherical surfaces of the inner ring and the outer ring by the injection molding process can be firmly adhered to the inner spherical surface of the outer ring after the injection molding and the solidification, and in addition, because the curvature of the middle curved surface part is larger than that of the side curved surface part, on one hand, the size of a cavity between the inner ring and the outer ring can be increased to thicken the thickness of the self-lubricating slip-form plastic liner, and on the other hand, the inner spherical surface of the outer ring of the variable curvature structure can prevent the self-lubricating slip-form plastic liner which is subjected to injection molding from slipping in the left and right directions relative to the outer ring, so that the use stability of the knuckle bearing is improved.
Drawings
Fig. 1 is a side view of a structure of a molding-type self-lubricating spherical plain bearing according to a first embodiment of the present invention.
Fig. 2 is a sectional view a-a in fig. 1.
Fig. 3 is a cross-sectional view of the matching structure of the inner ring and the outer ring of the one-mold self-lubricating spherical plain bearing according to the embodiment of the present invention.
Fig. 4 is a structural side view of a molding-type self-lubricating spherical plain bearing according to a second embodiment of the present invention.
Fig. 5 is a sectional view B-B in fig. 4.
Description of reference numerals:
1. the self-lubricating slip form plastic liner comprises an inner ring, 2 an outer ring, 3 a self-lubricating slip form plastic liner, 21 a middle curved surface part, 22 and side curved surface parts.
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 should 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 orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element 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.
Example one
Referring to fig. 1 to 3, an embodiment of the present invention provides a molded self-lubricating spherical plain bearing, which includes an inner ring 1, an outer ring 2 coaxially disposed, and a self-lubricating molded gasket 3 injection-molded between the inner ring 1 and the outer ring 2, wherein an inner spherical surface of the outer ring 2 has a middle curved surface portion 21 and side curved surface portions 22 located at two sides of the middle curved surface portion 21, and a curvature of the middle curved surface portion 21 is greater than a curvature of the side curved surface portions 22. It is understood that, in the present embodiment, the inner spherical surface of the outer race 2 of the spherical plain bearing is composed of the middle curved surface portion 21 and the side curved surface portions 22 located at both sides of the middle curved surface portion 21, and at the same time, the curvature of the middle curved surface portion 21 is configured to be larger than the curvature of the side curved surface portions 22, so that the self-lubricating molding liner 3 formed between the spherical surfaces of the inner race 1 and the outer race 2 by the injection molding process can be firmly adhered to the inner spherical surface of the outer race 2 after the injection molding is solidified, and since the curvature of the middle curved surface portion 21 is larger than the curvature of the side curved surface portions 22, on the one hand, the size of the cavity between the inner race 1 and the outer race 2 can be increased to thicken the thickness of the self-lubricating molding liner 3, and on the other hand, the inner spherical surface of the outer race of the variable curvature structure can prevent the self-lubricating molding liner 3 from slipping in the left and right direction as shown in fig. 2 with respect to the outer race 2, thereby improving the use stability of the joint bearing.
Referring to fig. 1 to 3, in a preferred embodiment, the curvature of the outer spherical surface of the inner race 1 is greater than the curvature of the side curved surface portions 22 on the inner spherical surface of the outer race 2 and less than the curvature of the middle curved surface portion 21 on the inner spherical surface of the outer race 2.
Referring to fig. 1 to 3, in a preferred embodiment, the width of the outer ring 2 is defined as H, the inner spherical surface of the outer ring 2 is configured to form a minimum gap thickness t1 between H/15-H/5 and the outer spherical surface of the inner ring 1, and the inner spherical surface of the outer ring 2 is configured to form a maximum gap thickness t2 between H/2 and the outer spherical surface of the inner ring 1. In the present embodiment, it is preferable that the inner spherical surface of the outer race 2 is configured to have a minimum gap thickness t1 formed between the inner spherical surface of the inner race 1 and the outer spherical surface at H/10. However, it should be understood by those skilled in the art that in other embodiments, the minimum gap thickness t1 formed between the inner spherical surface of the outer race 2 and the outer spherical surface of the inner race 1 is not limited to H/10 (left and/or right) of the width of the outer race 2 specifically disclosed in the present embodiment, and may be at other width positions.
Referring now to fig. 1-3, in one preferred embodiment, t1 is 0.279 ± 0.076mm and t1< t2<0.559 mm. The design is such that the self-lubricating slip-form plastic liner 3 after injection molding in the joint bearing can meet the relevant requirements of AS81820 standard on the thickness of the molded liner from the structure. The cured self-lubricating molding liner 3 has better bearing capacity, can bear no less than 90Mpa of dynamic load, no less than 200Mpa of static load and less than 0.1 of friction coefficient, can stably work at the temperature of minus 55 ℃ to 180 ℃, and has the calendar life of more than 20 years.
The inner spherical surface of the outer ring 2 is also provided with an inward concave notch, so that the self-lubricating molding gasket 3 which is formed between the spherical surfaces of the inner ring 1 and the outer ring 2 in an injection molding mode can be stably connected to the inner spherical surface of the outer ring 2, and the self-lubricating molding gasket 3 has a good anti-rotation effect in the circumferential direction of the joint bearing.
In addition, the material of the self-lubricating molding liner 3 is the prior art, and the corresponding polymer molding liner material in the joint bearing in the prior art can be directly selected for use, and the description is omitted here.
Example two
Referring to fig. 4 and fig. 5, the difference between the present embodiment and the first embodiment is that the specific structure of the outer ring 2 is different, and in the present embodiment, the outer ring 2 is an anisotropic space structure, however, it should be understood by those skilled in the art that in other embodiments, the specific structure of the outer ring 2 may also be a part structure with other shapes, and is not limited to the specific structure disclosed in the present embodiment or the conventional revolving structure, and those skilled in the art can specifically design the overall structure of the outer ring 2 according to specific needs.
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 making creative efforts fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides a mould type self-lubricating joint bearing, includes inner circle (1), outer lane (2) and the self-lubricating slipform plastic liner (3) of injection moulding between inner circle (1) and outer lane (2) of coaxial setting, its characterized in that: the inner spherical surface of the outer ring (2) is provided with a middle curved surface part (21) and side curved surface parts (22) positioned at two sides of the middle curved surface part (21), and the curvature of the middle curved surface part (21) is larger than that of the side curved surface parts (22).
2. A moulding-type self-lubricating spherical plain bearing according to claim 1, characterized in that: the curvature of the outer spherical surface of the inner ring (1) is larger than that of the side curved surface part (22) on the inner spherical surface of the outer ring (2) and smaller than that of the middle curved surface part (21) on the inner spherical surface of the outer ring (2).
3. A moulding-type self-lubricating spherical plain bearing according to claim 1 or 2, characterized in that: the width of the outer ring (2) is defined as H, the inner spherical surface of the outer ring (2) is configured to form a minimum gap thickness t1 between the position H/15-H/5 and the outer spherical surface of the inner ring (1), and the inner spherical surface of the outer ring (2) is configured to form a maximum gap thickness t2 between the position H/2 and the outer spherical surface of the inner ring (1).
4. A self-lubricating spherical bearing of the moulding type according to claim 3, characterized in that: the inner spherical surface of the outer race (2) is configured to form a minimum clearance thickness t1 between the inner and outer spherical surfaces of the inner race (1) at H/10.
5. A self-lubricating spherical bearing of the moulding type according to claim 3, characterized in that: t1 ═ 0.279 ± 0.076mm, and t1< t2<0.559 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220864058.0U CN217055968U (en) | 2022-04-15 | 2022-04-15 | Moulding type self-lubricating joint bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220864058.0U CN217055968U (en) | 2022-04-15 | 2022-04-15 | Moulding type self-lubricating joint bearing |
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| CN217055968U true CN217055968U (en) | 2022-07-26 |
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| CN202220864058.0U Active CN217055968U (en) | 2022-04-15 | 2022-04-15 | Moulding type self-lubricating joint bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114701122A (en) * | 2022-04-15 | 2022-07-05 | 福建龙溪轴承(集团)股份有限公司 | Molding die of molding type joint bearing |
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2022
- 2022-04-15 CN CN202220864058.0U patent/CN217055968U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114701122A (en) * | 2022-04-15 | 2022-07-05 | 福建龙溪轴承(集团)股份有限公司 | Molding die of molding type joint bearing |
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