CN216343516U - Eccentric connection structure - Google Patents
Eccentric connection structure Download PDFInfo
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- CN216343516U CN216343516U CN202120248719.2U CN202120248719U CN216343516U CN 216343516 U CN216343516 U CN 216343516U CN 202120248719 U CN202120248719 U CN 202120248719U CN 216343516 U CN216343516 U CN 216343516U
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- spherical
- connecting rod
- joint
- end cover
- eccentric
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- 239000000314 lubricant Substances 0.000 claims description 4
- 230000007246 mechanism Effects 0.000 abstract description 9
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- 239000003208 petroleum Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000033001 locomotion Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model discloses an eccentric connecting structure, which belongs to the field of connecting structures and is mainly applied to the technical field of petroleum machinery; one end of the first connecting rod is fixedly connected with a second connecting rod, two ends of the first connecting rod and the second connecting rod, which are far away from the joint of the first connecting rod and the second connecting rod, are respectively provided with a convex spherical structure, and the spherical structures are respectively matched with the concave spherical contours of the spherical shaft seat and the spherical end cover; a first joint is fixedly connected to one side, away from the first connecting rod, of the spherical structure of the first connecting rod, a second joint is fixedly connected to one side, away from the second connecting rod, of the spherical structure of the second connecting rod, and the first joint and the second joint are fixedly connected with the spherical end cover through screws respectively; when the external mechanisms on the two sides are eccentric and not coaxial, the eccentric connection structure can realize the connection of the external mechanisms on the two sides and transfer bidirectional axial load, and simultaneously does not influence the respective rotation states of the external mechanisms on the two sides.
Description
Technical Field
The utility model relates to the field of connection structures, in particular to an eccentric connection structure which is mainly applied to the technical field of petroleum machinery.
Background
In the current petroleum machinery field, the eccentric connection structure is mainly a universal shaft, such as a cross hinged universal shaft, a ball cage type universal shaft and the like, and when the connection structure is connected with mechanisms on two sides, the connection structure can realize deflection at a certain angle, but can transmit torque while connecting, namely, can transmit force and torque, so that the motion state of the mechanisms on two sides can be changed. Common universal shaft structures cannot transmit only force but not torque.
SUMMERY OF THE UTILITY MODEL
The utility model aims to: the eccentric connection structure can realize connection of the external structures on two sides and transfer bidirectional axial load when the external mechanisms on two sides are eccentric and not coaxial, and simultaneously does not influence respective rotation states of the external mechanisms on two sides.
The purpose of the utility model is realized by the following technical scheme: an eccentric connecting structure comprises a first connecting rod, wherein one end of the first connecting rod is fixedly connected with a second connecting rod, two ends of the first connecting rod and the second connecting rod, which are far away from the joint of the first connecting rod and the second connecting rod, are respectively provided with a convex spherical structure, and the spherical structures are respectively matched with concave spherical contours of a spherical shaft seat and a spherical end cover; one side fixedly connected with first joint that the first connecting rod was kept away from to the spherical structure of first connecting rod, one side fixedly connected with second joint that the second connecting rod was kept away from to the spherical structure of second connecting rod, first joint and second joint are respectively through screw and spherical end cover fixed connection.
Furthermore, the spherical end cover is provided with an inner spherical surface which is respectively matched with the shapes of the first joint and the second joint, and the spherical end cover and the spherical shaft seat form a complete ball socket structure together.
Furthermore, four cavities are formed in contact surfaces between the spherical structures protruding from the two ends of the first connecting rod and the second connecting rod and between the spherical shaft seat and the spherical end cover; the four cavities are respectively arranged in an annular space between the spherical shaft seat and the spherical end cover and an end space between the spherical shaft seat and the joint spherical structure; the spherical structures protruding from the two ends of the first connecting rod and the second connecting rod are in four-point angular contact with the spherical shaft seat and the spherical end cover.
Further, the cavity stores a lubricant therein.
Further, the spherical centers of the spherical profiles of the spherical axle seat and the spherical end cap are not spatially concentric.
Further, the first connecting rod and the second connecting rod are connected through threads.
Furthermore, the centers of the inner parts of the first joint and the second joint are both provided with a through hole.
Understandably, the external threads of each joint can be changed into connection forms with the same effect according to different requirements, such as pin shafts, sliding grooves, clamping pieces and the like.
In summary, due to the adoption of the technical scheme, the utility model has the following positive technical effects:
1. the utility model can realize that when the external mechanisms on the two sides are eccentric and not coaxial, the external structures on the two sides can be connected to transmit bidirectional axial load without influencing the respective rotating states of the external mechanisms on the two sides.
2. The utility model can greatly improve the transmission efficiency of the eccentric connection structure, and can prolong the service life of the working pair on the premise of ensuring the basic transmission effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other relevant drawings can be obtained according to the drawings without inventive effort, wherein:
FIG. 1 is a schematic view of an eccentric coupling structure;
FIG. 2 is a schematic view of the eccentric connection structure in a deflection angle operation state;
FIG. 3 is a schematic view of a structure at a ball socket on one side;
FIG. 4 is a schematic view of the structure at the ball socket in a state of only tension deflection angle operation on one side;
the labels in the figure are: 1-a first connecting rod; 2-a first joint; 3-a spherical end cap; 4-a second connecting rod; 5-a second linker; 6-spherical shaft seat; 7-a screw; 101-a cavity; a-direction of tension; b-contact surface.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention are described in further detail below with reference to examples.
Example one
As shown in fig. 1 to 4, the eccentric connection structure disclosed in the present invention comprises a first connection rod 1, wherein one end of the first connection rod 1 is fixedly connected with a second connection rod 4, two ends of the first connection rod 1 and the second connection rod 4, which are away from the connection between the two, are respectively provided with a convex spherical structure, and the spherical structures are respectively matched with concave spherical contours of a spherical shaft seat 6 and a spherical end cover 3; a first joint 2 is fixedly connected to one side, away from the first connecting rod 1, of the spherical structure of the first connecting rod 1, a second joint 5 is fixedly connected to one side, away from the second connecting rod 4, of the spherical structure of the second connecting rod 4, and the first joint 2 and the second joint 5 are fixedly connected with a spherical end cover 3 through screws 7 respectively; the first connecting rod 1 and the second connecting rod 4 are fixedly connected and can be selectively connected by threads, two ends of each connecting rod are respectively provided with a convex spherical structure, and the spherical structures are respectively matched with the concave spherical profiles of the spherical shaft seat 6 and the spherical end cover 3 to realize free deflection under a certain angle.
Furthermore, the spherical end cover 3 is provided with an inner spherical surface which is respectively matched with the shapes of the first joint 2 and the second joint 5, and the spherical end cover 3 and the spherical shaft seat 6 together form a complete ball socket structure; the first joint 2 and the second joint 5 are both connected with the spherical end cover 3 through screws 7; the spherical end cover 3 is provided with an inner spherical surface which forms a complete right ball socket and a complete left ball socket together with the spherical shaft seats 6 arranged in the first joint 2 and the second joint 5; the first connecting rod 1 and the second connecting rod 4 are connected through threads, two ends of each connecting rod are provided with convex spherical structures, and the spherical structures are respectively matched with concave spherical profiles of the spherical shaft seat 6 and the spherical end cover 3 to realize free deflection under a certain angle.
Furthermore, four cavities 101 are formed in contact surfaces between the spherical structures protruding from the two ends of the first connecting rod 1 and the second connecting rod 4 and the spherical shaft seat 6 and the spherical end cover 3; the four cavities 101 are respectively arranged in an annular space between the spherical shaft seat 6 and the spherical end cover 3 and an end space between the spherical shaft seat 6 and the joint spherical structure; the spherical structures protruding from the two ends of the first connecting rod 1 and the second connecting rod 4, the spherical shaft seat 6 and the spherical end cover 3 are in a four-point angular contact state; the convex spherical structures at the two ends of the connecting rod are not complete spherical surfaces, the spherical surfaces are partially removed from the end surface at the tail end and the cylindrical profile surface coaxial with the connecting rod, a four-point angular contact state is formed, axial force and radial force can be simultaneously borne in the four-point angular contact state, and potential resistance in reciprocating deflection motion can be reduced.
Further, the cavity 101 stores lubricant therein; the incomplete spherical contour, together with the spherical shaft seat 6, the spherical end cover 3 and the joint, forms a cavity 101 for storing lubricant, further reducing resistance during movement and protecting moving parts.
Furthermore, the spherical centers of the spherical profiles of the spherical shaft seat 6 and the spherical end cover 3 are not concentric in space; the spherical centers of the spherical profiles of the spherical shaft seat 6 and the spherical end cover 3 are not concentric in space, and the spherical centers of the two are at a small distance, so that when the eccentric connection structure is pulled or pressed, the eccentric connection structure is stressed on one side of the ball socket, and the other side of the eccentric connection structure is not stressed, and the abrasion condition of parts can be effectively improved.
Further, the first connecting rod 1 and the second connecting rod 4 are connected through threads.
Furthermore, the centers of the inner parts of the first joint 2 and the second joint 5 are both provided with a through hole; the first joint 2 and the second joint 5 are both provided with a through hole for disassembling the spherical shaft seat 6, so that the spherical shaft seat 6 and the spherical end cover 3 are convenient to replace as main wearing parts.
It should be noted that: the utility model relates to the external screw thread of each joint, which can be changed into other screw thread connection forms according to different requirements; the first connecting rod 1 and the second connecting rod 4 are connected through threads, and the length of the connecting rods can be adjusted according to the required eccentricity so as to adapt to the requirements of different eccentricities.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents and improvements made by those skilled in the art within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. An eccentric connection structure, characterized in that: the connecting structure comprises a first connecting rod (1), wherein one end of the first connecting rod (1) is fixedly connected with a second connecting rod (4), two ends, far away from the joint of the first connecting rod (1) and the second connecting rod (4), of the first connecting rod and the second connecting rod are respectively provided with a convex spherical structure, and the spherical structures are respectively matched with the concave spherical contours of a spherical shaft seat (6) and a spherical end cover (3); one side fixedly connected with first joint (2) that first connecting rod (1) was kept away from to the spherical structure of first connecting rod (1), one side fixedly connected with second joint (5) that second connecting rod (4) was kept away from to the spherical structure of second connecting rod (4), first joint (2) and second joint (5) are respectively through screw (7) and spherical end cover (3) fixed connection.
2. An eccentric connecting structure according to claim 1, wherein: the spherical end cover (3) is provided with an inner spherical surface which is respectively matched with the shapes of the first joint (2) and the second joint (5), and the spherical end cover (3) and the spherical shaft seat (6) jointly form a complete ball socket structure.
3. An eccentric connecting structure according to claim 1, wherein: four cavities (101) are formed in contact surfaces between the spherical structures protruding from the two ends of the first connecting rod (1) and the second connecting rod (4) and the spherical shaft seat (6) and the spherical end cover (3); the four cavities (101) are respectively arranged in an annular space between the spherical shaft seat (6) and the spherical end cover (3) and an end space between the spherical shaft seat (6) and the joint spherical structure; the spherical structures protruding from the two ends of the first connecting rod (1) and the second connecting rod (4), the spherical shaft seat (6) and the spherical end cover (3) are in a four-point angular contact state.
4. An eccentric connecting structure according to claim 3, wherein: the cavity (101) stores lubricant therein.
5. An eccentric connecting structure according to claim 1, wherein: the spherical centers of the spherical profiles of the spherical shaft seat (6) and the spherical end cover (3) are not concentric in space.
6. An eccentric connecting structure according to claim 1, wherein: the first connecting rod (1) and the second connecting rod (4) are connected through threads.
7. An eccentric connecting structure according to claim 1, wherein: the centers of the inner parts of the first joint (2) and the second joint (5) are both provided with a through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120248719.2U CN216343516U (en) | 2021-01-28 | 2021-01-28 | Eccentric connection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120248719.2U CN216343516U (en) | 2021-01-28 | 2021-01-28 | Eccentric connection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216343516U true CN216343516U (en) | 2022-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120248719.2U Active CN216343516U (en) | 2021-01-28 | 2021-01-28 | Eccentric connection structure |
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| CN (1) | CN216343516U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114770474A (en) * | 2022-05-10 | 2022-07-22 | 燕山大学 | Ball ring nested parallel stable platform of 3-RRR spherical mechanism and use method |
-
2021
- 2021-01-28 CN CN202120248719.2U patent/CN216343516U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114770474A (en) * | 2022-05-10 | 2022-07-22 | 燕山大学 | Ball ring nested parallel stable platform of 3-RRR spherical mechanism and use method |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: An eccentric connection structure Granted publication date: 20220419 Pledgee: Chengdu Rural Commercial Bank Co.,Ltd. Xindu Sanhe Branch Pledgor: Greek Energy Technology Co.,Ltd. Chengdu Registration number: Y2024980007906 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |