CN107687481B - Universal coupling - Google Patents
Universal coupling Download PDFInfo
- Publication number
- CN107687481B CN107687481B CN201710595904.7A CN201710595904A CN107687481B CN 107687481 B CN107687481 B CN 107687481B CN 201710595904 A CN201710595904 A CN 201710595904A CN 107687481 B CN107687481 B CN 107687481B
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- CN
- China
- Prior art keywords
- shaft
- ball hinge
- universal joint
- coupling
- joint according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 230000008878 coupling Effects 0.000 title claims abstract description 76
- 238000010168 coupling process Methods 0.000 title claims abstract description 76
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 76
- 238000009434 installation Methods 0.000 claims abstract description 10
- 230000005540 biological transmission Effects 0.000 abstract description 21
- 230000008859 change Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 3
- 238000005096 rolling process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000005242 forging Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
- F16D3/26—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected
- F16D3/44—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected the intermediate member being connected to the coupling parts by ridges, pins, balls, or the like guided in grooves or between cogs
- F16D3/46—Hooke's joints or other joints with an equivalent intermediate member to which each coupling part is pivotally or slidably connected the intermediate member being connected to the coupling parts by ridges, pins, balls, or the like guided in grooves or between cogs each coupling part embracing grooves or ridges on the intermediate member
Abstract
The invention discloses a universal coupling, which is characterized by comprising: the two ends of the connecting shaft rod are respectively provided with an installation shaft hole which is vertical to the axial direction of the connecting shaft rod, and the two installation shaft holes are vertical to each other; a pin shaft is arranged in the mounting shaft hole, and the diameter of the pin shaft is smaller than that of the mounting shaft hole; two coupling members, each of which is connected to one end of the coupling rod by one of the pins; the middle part of the pin shaft is sleeved with a ball hinge ferrule, the ball hinge ferrule is provided with a spherical outer surface, the middle part of the mounting shaft hole is provided with a ball hinge support part, and the ball hinge ferrule is connected with the ball hinge support part in a spherical matching way. The universal shaft coupler provided by the invention can change the torque transmission direction, has a simple structure and is easy to process and manufacture.
Description
Technical Field
The invention relates to the technical field of transmission equipment, in particular to a universal coupling.
Background
The universal joint is a mechanical part for connecting two shafts (a driving shaft and a driven shaft) in different mechanisms by using the characteristics of the mechanisms so as to enable the shafts to rotate together to transmit torque. The universal coupling can enable two transmission shafts with different shafts (namely, the axes of the two transmission shafts have an included angle) to realize continuous rotation of the two connected transmission shafts, and reliably transmit torque and motion. The biggest characteristics of universal joint are: the structure has larger angle and direction compensation capability, compact structure and high transmission efficiency. In the high-speed heavy-load power transmission, the universal coupling also has the effects of buffering, damping and improving the dynamic performance of a shaft system. The universal coupling is respectively connected with the driving shaft and the driven shaft. The cross shaft in prior art universal couplings is a key drive component. The integrally formed cross shaft needs die forging processing, but the die forging processing is difficult and high in cost.
Disclosure of Invention
The embodiment of the invention provides a universal coupling, which adopts a coupling rod to replace the existing cross shaft, and solves the problem of cross shaft processing difficulty of the universal shaft coupling in the prior art.
The embodiment of the invention provides a universal coupling, which comprises:
the two ends of the connecting shaft rod are respectively provided with an installation shaft hole which is vertical to the axial direction of the connecting shaft rod, and the two installation shaft holes are vertical to each other; a pin shaft is arranged in the mounting shaft hole, and the diameter of the pin shaft is smaller than that of the mounting shaft hole;
two coupling members, each of which is connected to one end of the coupling rod by one of the pins;
the middle part of the pin shaft is sleeved with a ball hinge ferrule, the ball hinge ferrule is provided with a spherical outer surface, the middle part of the mounting shaft hole is provided with a ball hinge support part, and the ball hinge ferrule is connected with the ball hinge support part in a spherical matching way.
Optionally, the end of the coupling rod is in spherical engagement with the coupling member.
Optionally, the coupling member is a sleeve, and a gap is formed at a joint between the coupling rod and the coupling member.
Optionally, two ends of the pin shaft are respectively connected to the tabs of the coupling member.
Optionally, the surface of the tab near the coupling rod is a bevel or an inner tapered surface.
Alternatively, the ends of the ball hinge supports extend in the axial direction of the mounting shaft hole to form an inner tapered support surface having an inner diameter gradually increasing.
Optionally, the inwardly tapered support surfaces of both of the ball hinge supports are the same size and shape.
Optionally, a stepped limiting block is disposed in the mounting shaft hole at one end of the ball hinge support, and the stepped limiting block extends in a direction away from the ball hinge support to form an inner tapered support surface.
Optionally, two ends of the ball hinge support are respectively provided with a support positioning cylinder for rotationally matching with the pin shaft, and the inner diameter of the support positioning cylinder is larger than the outer diameter of the pin shaft.
Optionally, the support positioning cylinder has an internally tapered support surface.
The universal shaft coupler provided by the embodiment of the invention can change the transmission direction of the torque, has a simple structure and is easy to process and manufacture.
Drawings
Features, advantages and technical effects of exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
Fig. 1 is an exploded view of a universal joint according to an embodiment of the present invention.
Fig. 2 is an exploded view of a universal joint according to another embodiment of the present invention.
Fig. 3 is an exploded view schematically showing a universal joint according to still another embodiment of the present invention.
In the drawings, the drawings are not necessarily to scale.
Description of the labeling:
100. a coupling rod; 110. installing the shaft hole; 111. a stepped limiting block; 120. a pin shaft; 121. a ball-hinged ferrule; 122. a ball-jointed support; 123. a supporting and positioning cylinder;
200. a coupling member; 210. tab for fixing a terminal
Detailed Description
The embodiments of the present invention will be described in further detail with reference to the drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the described embodiments.
In the description of the present invention, it should be noted that unless otherwise specified, the indicated orientations or positional relationships are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the indicated devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention.
The following embodiments describe the technical solutions of the universal couplings according to the embodiments of the present invention, but the following embodiments do not limit the protection scope of the technical solutions of the present invention.
As shown in fig. 1, the universal joint according to the embodiment of the present invention includes a coupling rod 100 and a coupling member 200, and the coupling member 200 is installed at both ends of the coupling rod 100.
Two ends of the connecting rod 100 are respectively provided with an installation shaft hole 110 which is vertical to the axial direction of the connecting rod 100, and the two installation shaft holes 110 are vertical to each other; a pin shaft 120 is arranged in the mounting shaft hole 110, and the diameter of the pin shaft 120 is smaller than that of the mounting shaft hole 110; the coupling member 200 has two, each of which is connected to one end of the coupling rod 100 by one pin shaft 120; one of the coupling members 200 is used for connecting with a driving shaft, the other coupling member 200 is used for connecting with a driven shaft, the power on the driving shaft is transmitted to the driven shaft through the power transmission function of the coupling shaft 100, and the driving shaft and the driven shaft can be arranged in an angle (instead of a straight line), so that the change of the transmission direction of the torque is realized;
the length and diameter of the mounting shaft hole 110, and the gap between the mounting shaft hole 110 and the pin shaft 120 determine the maximum angle of the coupling rod 100 relative to the coupling member 200, and if a larger steering angle is required, the length of the mounting shaft hole 110 needs to be reduced, or the diameter of the mounting shaft hole 110 needs to be increased, or the gap between the mounting shaft hole 110 and the pin shaft 120 needs to be increased; the sum of the maximum steering angles between the coupling rod 100 and the coupling members 200 at both ends is the maximum steering angle in the entire power transmission process of the universal joint.
Wherein, a ball hinge ferrule 121 is sleeved on the middle part of the pin shaft 120, the ball hinge ferrule 121 has a spherical outer surface, a ball hinge support 122 is installed on the middle part of the installation shaft hole 110, and the ball hinge ferrule 121 and the ball hinge support 122 are connected in a spherical matching manner. The ball joint collar 121 and the ball joint support 122 are engaged in a ball joint manner, so that the pin 120 can freely rotate within a certain angle range relative to the ball joint support 122, and the rotation of the pin 120 drives the coupling rod 100 to rotate, thereby changing the direction of power transmission.
In the universal shaft coupling provided by the embodiment of the invention, the coupling member 200, the coupling shaft 100, the pin shaft 120 inside the coupling shaft, the ball hinge collar 121 on the pin shaft 120 and the ball hinge support 122 have simple structures, are easy to process and manufacture, and can change the transmission direction of torque.
Optionally, in the universal joint provided by the embodiment of the present invention, the end of the coupling rod 100 is in spherical fit with the coupling member 200, wherein the end of the coupling rod 100 is set to be a spherical surface, and the coupling member 200 is correspondingly set to be a concave spherical surface, so that the end of the coupling rod 100 can be automatically positioned while the spherical fit is performed, thereby preventing the coupling rod 100 from moving along the axial direction of the pin shaft 120, and ensuring the stability of the power transmission process.
Alternatively, in the universal joint provided by the embodiment of the present invention, the coupling member 200 is a sleeve, the joint between the coupling shaft 100 and the coupling member 200 has a gap, and the end of the coupling shaft 100 is received by a large space of the sleeve structure, so that the coupling shaft 100 can deflect within a certain angle range relative to the coupling member 200, thereby changing the power transmission direction.
Alternatively, in the universal joint according to the embodiment of the present invention, the surface of the tab 210 near the coupling rod 100 is provided with a bevel or an inner tapered surface to adapt the coupling rod 100 to rotate under the action of the ball joint collar 121 and the ball joint support 122, so as to avoid the tab 210 colliding with the coupling rod 100.
Optionally, in the universal joint provided by the embodiment of the present invention, two ends of the pin 120 are respectively connected to the tabs 210 of the coupling member 200, the tabs 210 are generally arranged in pairs, and the two ends of the pin 120 are fixedly connected through the tabs 210, so that the position of the pin 120 is determined, and the pin 120 is prevented from moving. In practice, the tab 210 may not be provided, and the connecting end of the coupling member 200 is a bowl-shaped structure, and the pin 120 is transversely and fixedly connected to the connecting end of the bowl-shaped structure.
Optionally, in the universal joint provided by the embodiment of the present invention, the end of the ball hinge support 122 extends along the axial direction of the mounting axle hole 110 to form an inner tapered support surface with an inner diameter gradually increasing, and the inner tapered support surface can form a rolling connection surface with the pin 120, so that during the deflection transmission process of the coupling rod 100, the mounting axle hole 110 of the coupling rod 100 does not directly contact with the pin 120, and forms a rolling connection with the pin 120 through the inner tapered support surface, and further, the power is transmitted to the mounting axle hole 110 through the inner tapered support surface, so that the power transmission effect is better, and the damage to the mounting axle hole 110 is reduced.
Alternatively, in the universal joint provided by the embodiment of the present invention, the size and the shape of the inner conical supporting surfaces of the two spherical hinge supports 122 are the same, so that the power transmission between the two ends of the coupling rod 100 and the coupling member 200 is more balanced and stable, and the phenomena of different wear of the two ends and the coupling rod jumping during the power transmission process caused by the different sizes and the different shapes of the inner conical supporting surfaces at the two ends are avoided.
As shown in fig. 3, optionally, in the universal joint provided in the embodiment of the present invention, a step-shaped limiting block 111 is disposed in the installation shaft hole 110 at one end of the ball hinge support 122, and the step-shaped limiting block 111 extends in a direction away from the ball hinge support 122 to form an inner tapered supporting surface, and the step-shaped limiting block 111 not only limits the position of the ball hinge support 122, but also forms a rolling connection with the pin shaft 120 through the inner tapered supporting surface on the step-shaped limiting block 111; it should be noted that the stepped stopper 111 can be provided only at one end of the ball hinge support 122 in the mounting shaft hole 110, and the stepped stopper 111 cannot be provided at the other end at the same time.
As shown in fig. 2, in the universal joint according to the embodiment of the present invention, a supporting and positioning cylinder 123 is respectively disposed at two ends of the ball hinge support 122 for rotatably engaging with the pin 120, and an inner diameter of the supporting and positioning cylinder 123 is larger than an outer diameter of the pin 120. The support positioning cylinders 123 at the two ends of the ball-joint support 122 can position the ball-joint support 122 in two directions, so that the ball-joint support positioning member 122 cannot move axially and radially in the mounting shaft hole 110, thereby ensuring stable power transmission between the coupling member 200 and the coupling shaft 100.
Alternatively, in the universal joint according to the embodiment of the present invention, the supporting and positioning cylinder 123 has an inner tapered supporting surface, so that the supporting and positioning cylinder 123 not only positions the ball-hinged supporting member 122, but also can achieve a rolling fit with the pin shaft 120 through the inner tapered supporting surface, so that the pin shaft 120 achieves power transmission with the mounting shaft hole 110 through the supporting and positioning cylinder 123.
While the invention has been described with reference to a preferred embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A universal joint, comprising:
the connecting rod comprises a connecting rod (100), two ends of the connecting rod are respectively provided with an installation shaft hole (110) which is vertical to the axial direction of the connecting rod (100), and the two installation shaft holes (110) are vertical to each other; a pin shaft (120) is arranged in the mounting shaft hole (110), and the diameter of the pin shaft (120) is smaller than that of the mounting shaft hole (110);
two coupling members (200) each connected to one end of the coupling shaft (100) by one of the pins (120);
the middle of the pin shaft (120) is sleeved with a ball hinge ferrule (121), the ball hinge ferrule (121) is provided with a spherical outer surface, a ball hinge support (122) is arranged in the middle of the mounting shaft hole (110), and the ball hinge ferrule (121) and the ball hinge support (122) are connected in a spherical matching mode.
2. The universal joint according to claim 1,
the end of the coupling rod (100) is matched with the coupling member (200) through a spherical surface.
3. The universal joint according to claim 1,
the coupling member (200) is a sleeve, and a gap is formed at the joint between the coupling shaft (100) and the coupling member (200).
4. The universal joint according to any of claims 1 to 3,
and two ends of the pin shaft (120) are respectively connected to the lugs (210) of the coupling member (200).
5. The universal joint according to claim 4,
the surface of the lug (210) close to one side of the connecting shaft rod (100) is a bevel surface or an inner conical surface.
6. The universal joint according to claim 1,
the ends of the ball hinge supports (122) extend in the axial direction of the mounting shaft hole (110) to form an inner tapered support surface having an inner diameter gradually increasing.
7. The universal joint according to claim 6,
the inner tapered support surfaces of the two ball-joint supports (122) are the same size and shape.
8. The universal joint according to claim 1, 6 or 7,
a step-shaped limiting block (111) is arranged in the mounting shaft hole (110) at one end of the ball hinge support piece (122), and the step-shaped limiting block (111) extends towards the direction far away from the ball hinge support piece (122) to form an inner conical support surface.
9. The universal joint according to claim 1,
the two ends of the ball hinged support (122) are respectively provided with a supporting and positioning cylinder (123) which is used for being matched with the pin shaft (120) in a rotating way, and the inner diameter of the supporting and positioning cylinder (123) is larger than the outer diameter of the pin shaft (120).
10. The universal joint according to claim 9,
the supporting and positioning cylinder (123) is provided with an inner conical supporting surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595904.7A CN107687481B (en) | 2017-07-20 | 2017-07-20 | Universal coupling |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710595904.7A CN107687481B (en) | 2017-07-20 | 2017-07-20 | Universal coupling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107687481A CN107687481A (en) | 2018-02-13 |
| CN107687481B true CN107687481B (en) | 2019-12-27 |
Family
ID=61152927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710595904.7A Active CN107687481B (en) | 2017-07-20 | 2017-07-20 | Universal coupling |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107687481B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109253179A (en) * | 2018-09-21 | 2019-01-22 | 北京金风科创风电设备有限公司 | Rigid coupling and wind generating set |
| CN109108582A (en) * | 2018-09-28 | 2019-01-01 | 江苏数字鹰科技股份有限公司 | A kind of unmanned plane loading member hinges interconnecting piece manufacturing method |
| CN109108581B (en) * | 2018-09-28 | 2023-06-16 | 江苏数字鹰科技股份有限公司 | Manufacturing method of carrier assembly body connecting part for unmanned aerial vehicle |
| CN110386330B (en) * | 2019-08-20 | 2021-02-05 | 刘云飞 | Portable blood sampling case of clinical laboratory |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5477614A (en) * | 1992-06-30 | 1995-12-26 | Tokai Rubber Industries, Ltd. | Method for producing a sliding type coupling device having slidable member with gap-filling portion |
| US5807010A (en) * | 1994-02-07 | 1998-09-15 | Illinois Tool Works Inc. | Pivotal ball-end link |
| US6176379B1 (en) * | 1999-01-29 | 2001-01-23 | Westinghouse Air Brake Company | Ball and race assembly including a one piece race member integrally formed with the ball |
| CN202579179U (en) * | 2012-04-28 | 2012-12-05 | 重庆玖博机电有限公司 | Universal joint connecting rod assembly of screw pump |
| CN104813030A (en) * | 2012-12-04 | 2015-07-29 | 麦格纳动力系巴德霍姆堡有限责任公司 | Electric motor-driven motor-vehicle vacuum pump, and drive shaft for a motor-vehicle vacuum pump |
| CN205013286U (en) * | 2015-09-30 | 2016-02-03 | 耐驰（兰州）泵业有限公司 | A round pin formula universal joint for single -screw pump |
-
2017
- 2017-07-20 CN CN201710595904.7A patent/CN107687481B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5477614A (en) * | 1992-06-30 | 1995-12-26 | Tokai Rubber Industries, Ltd. | Method for producing a sliding type coupling device having slidable member with gap-filling portion |
| US5807010A (en) * | 1994-02-07 | 1998-09-15 | Illinois Tool Works Inc. | Pivotal ball-end link |
| US6176379B1 (en) * | 1999-01-29 | 2001-01-23 | Westinghouse Air Brake Company | Ball and race assembly including a one piece race member integrally formed with the ball |
| CN202579179U (en) * | 2012-04-28 | 2012-12-05 | 重庆玖博机电有限公司 | Universal joint connecting rod assembly of screw pump |
| CN104813030A (en) * | 2012-12-04 | 2015-07-29 | 麦格纳动力系巴德霍姆堡有限责任公司 | Electric motor-driven motor-vehicle vacuum pump, and drive shaft for a motor-vehicle vacuum pump |
| CN205013286U (en) * | 2015-09-30 | 2016-02-03 | 耐驰（兰州）泵业有限公司 | A round pin formula universal joint for single -screw pump |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107687481A (en) | 2018-02-13 |
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