CN110925321B - Eccentric coupling with adjustable eccentric distance - Google Patents
Eccentric coupling with adjustable eccentric distance Download PDFInfo
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- CN110925321B CN110925321B CN201911378240.4A CN201911378240A CN110925321B CN 110925321 B CN110925321 B CN 110925321B CN 201911378240 A CN201911378240 A CN 201911378240A CN 110925321 B CN110925321 B CN 110925321B
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- disc
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- 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
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/12—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted for accumulation of energy to absorb shocks or vibration
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Abstract
The invention discloses an eccentric coupling with adjustable eccentricity, which is characterized in that a driving disc, a driven disc and a transition disc are connected together through a double-sided connecting rod, when a driving shaft drives the driving disc to eccentrically rotate, a connecting shaft of the driven disc slides in a chute of the double-sided connecting rod, so that the eccentric connecting shaft is realized, no start-stop impact can be realized.
Description
Technical Field
The invention belongs to the field of couplings, and particularly relates to an eccentric coupling with an adjustable eccentric distance.
Background
A coupling is a common mechanical component that couples a drive shaft and a driven shaft for common rotation to transmit motion and torque. The common universal coupling can only transmit torque and cannot bear axial force, so that the application range of the universal coupling is limited. Currently, the known coupling mainly comprises forms or types of rigidity, sleeves, clamping shells, flanges, gears, rollers and the like, and can be reasonably selected according to the specific conditions of transmission force. The sleeve coupling is generally used for fixing the nut or the screw rod, the torque of the sleeve coupling is utilized for screwing the nut or the screw rod, however, the sleeve coupling belongs to a rigid coupling, in the existing sleeve coupling, the sleeve is fixedly connected, so when the nut or the screw rod is screwed by the rigid sleeve coupling which is fixedly connected, when the sleeve is directly contacted with the nut or the screw rod, the torque of the sleeve is not well controlled because the coupling is rotated, the sleeve is fixed on the lower coupling head, and therefore, the sleeve is difficult to accurately sleeve the nut, and can be sleeved on the nut or the screw rod after colliding with the nut or the screw rod and is screwed. The sleeve and the nut or the screw are easy to be damaged by multiple collisions in the screwing process, and the service life of the coupler is reduced.
Patent application number CN201520021345.5 discloses a quincuncial eccentric coupling, including action wheel fixer, left rotation ring, intermediate junction ring, right rotation ring, from driving wheel fixer, connecting rod and bolt, the action wheel fixer passes through the bolt fastening in left side of left rotation ring, from driving wheel fixer passes through the bolt fastening in right side of right rotation ring, intermediate junction ring is connected in left rotation ring and right rotation ring respectively through the connecting rod. The center of action wheel fixer is equipped with the driving shaft fixed orifices, is equipped with the clamp plate in the driving shaft fixed orifices, is equipped with the several bolt hole uniformly around the driving shaft fixed orifices, is equipped with the bolt on the bolt hole. The center of the left rotating ring is provided with a round hole, the round hole is smaller than a driving shaft fixing hole of the driving wheel fixer, bolt holes corresponding to the bolt holes on the driving wheel fixer are arranged around the round hole, and quincuncial five connecting shafts are uniformly arranged outside the bolt holes on the right side surface of the round hole. The center of the middle connecting ring is provided with a round hole, and two sides of the middle connecting ring are provided with quincuncial five connecting shafts. The center of driven wheel fixer is equipped with driven shaft fixed orifices, is equipped with the clamp plate in the driven shaft fixed orifices, is equipped with the several bolt hole uniformly around driven shaft fixed orifices, is equipped with the bolt on the bolt hole. The center of the right rotating ring is provided with a round hole, the round hole is smaller than a driven shaft fixing hole of the driven wheel fixer, bolt holes corresponding to the bolt holes on the driven wheel fixer are arranged around the round hole, and quincuncial five connecting shafts are uniformly arranged outside the bolt holes on the left side face of the round hole. The connecting rod is designed to be 8-shaped, two ends of the connecting rod are respectively provided with a shaft hole, and the shaft holes are internally provided with the needle rollers and the needle roller sleeves, so that friction force can be reduced, and the rotating shaft can rotate more flexibly. The length of the connecting rod is smaller than the distance between two adjacent connecting shafts. Compared with the prior art, the quincuncial eccentric coupling provided by the invention has the advantages of small friction force, stable rotation, high safety and long service life, and can bear axial force and transmit torque. However, the eccentricity of the driving wheel and the driven wheel is not adjustable because the axle center distance of the driving wheel fixer and the driven wheel fixer is fixed. In some machines using couplings, the operation timing device vibrates, so that the relative positions of the axes of the driving shaft and the driven shaft tend to change, and if a coupling with non-adjustable eccentricity is selected, the shearing force generated by long-time operation is easy to damage the coupling.
Disclosure of Invention
The invention aims to solve the problem that the eccentricity of an eccentric coupler is difficult to adjust in the prior art, and provides an eccentric coupler with adjustable eccentricity.
In order to achieve the aim, the invention comprises a driving disc, an outer shell, a transition disc, a driven disc, a double-sided connecting rod and a sliding sheet;
the driving disc is of a hexagonal structure, each corner of the hexagonal structure of the driving disc is provided with a driving disc round hole, and the center of the hexagonal structure of the driving disc is fixedly provided with a driving shaft;
the driven plate is of a hexagonal structure, each corner of the hexagonal structure of the driven plate is provided with a connecting shaft, and the center of the hexagonal shape of the driven plate is fixedly provided with a driven shaft;
the double-sided connecting rod comprises a chute, a transition disc connecting shaft is arranged at the back of the chute, and the transition disc connecting shaft is fixedly connected with the chute through a driving disc connecting shaft;
the transition disc comprises a hollow circular ring, a hexagonal structure is arranged on the axial surface of the hollow circular ring, and each corner of the hexagonal structure is provided with a transition disc round hole;
the connecting shaft of the driven plate is arranged in the chute of the double-sided connecting rod, the round hole of the driving plate on the driving plate is sleeved on the connecting shaft of the driving plate on the double-sided connecting rod, and the connecting shaft of the transition plate of the double-sided connecting rod is hinged in the round hole of the transition plate on the transition plate;
the driving disc, the driven disc and the transition disc are all arranged in the outer shell, the driving shaft of the driving disc penetrates through the hollow circular ring of the transition disc to extend out of the front side of the outer shell, and the driven shaft of the driven disc extends out of the back side of the outer shell.
The back of shell body is provided with the gleitbretter spacing groove, and the gleitbretter spacing inslot has the gleitbretter, and the gleitbretter can slide or fix in the gleitbretter spacing inslot, has seted up the centre bore on the gleitbretter, and the driven shaft of driven disc stretches out in the centre bore.
The driven shaft is sleeved with a bearing, and the bearing is fixed in the central hole.
The front of the outer shell is provided with a transition disc nested circular ring, and the hollow circular ring of the transition disc is nested in the transition disc nested circular ring.
A driving shaft positioning hole is formed in the front face of the outer shell, and a driving shaft of the driving disc extends out of the driving shaft positioning hole.
The driving shaft positioning hole is eccentrically arranged relative to the hollow circular ring.
The driving shaft is sleeved with a bearing, and the bearing is fixed in the driving shaft positioning hole.
Compared with the prior art, the driving disc, the driven disc and the transition disc are connected together through the double-sided connecting rod, when the driving shaft drives the driving disc to eccentrically rotate, the connecting shaft of the driven disc slides in the chute of the double-sided connecting rod, so that the eccentric connecting shaft is realized, and when the driving disc rotates, the driven disc only receives tangential force applied by the double-sided connecting rod, so that no start-stop impact can be realized.
Furthermore, the driving shaft and the driven shaft are sleeved with the bearings, rolling friction with smaller friction coefficient is generated during rotation, and the connection is tight.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the driving disk and the transition disk according to the present invention;
FIG. 3 is a schematic diagram of an active disc structure according to the present invention;
FIG. 4 is a schematic view of the structure of the outer casing according to the present invention;
FIG. 5 is a schematic diagram of a transition disc structure according to the present invention;
FIG. 6 is a schematic view of the structure of the driven disc in the present invention;
FIG. 7 is a schematic view of a double-sided connecting rod structure according to the present invention;
FIG. 8 is a schematic view of a sliding vane structure according to the present invention;
in the figure, a driving disk, a casing body, a transition disk, a driven disk, a double-sided connecting rod, a sliding sheet, a driving shaft positioning hole, a sliding sheet limiting groove, a driving shaft, a driven shaft, a central hole, a driving disk round hole, a transition disk nested circular ring, a hollow circular ring, a transition disk round hole, a connecting shaft, a driving disk connecting shaft, a transition disk connecting shaft and a sliding chute.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1 and 2, the present invention includes a driving disk 1, an outer housing 2, a transition disk 3, a driven disk 4, a double-sided link 5, and a slide 6.
Referring to fig. 3, the driving disk 1 has a hexagonal structure, a driving disk circular hole 12 is formed in each corner of the hexagonal structure of the driving disk 1, and a driving shaft 7 is fixed at the center of the hexagonal structure of the driving disk 1.
Referring to fig. 6, the driven plate 4 has a hexagonal structure, a coupling shaft 16 is provided at each corner of the hexagonal structure of the driven plate 4, and a driven shaft 10 is fixed to the center of the hexagonal shape of the driven plate 4.
Referring to fig. 7, the double-sided connecting rod 5 includes a chute 19, a transition disc connecting shaft 18 is disposed at the back of the chute 19, and the transition disc connecting shaft 18 is fixedly connected with the chute 19 through a driving disc connecting shaft 17.
Referring to fig. 5, the transition disc 3 comprises a hollow circular ring 14, a hexagonal structure is arranged on the axial surface of the hollow circular ring 14, and a transition disc round hole 15 is formed in each corner of the hexagonal structure.
Referring to fig. 6, the connecting shaft 16 of the driven plate 4 is arranged in the chute 19 of the double-sided connecting rod 5, the driving plate round hole 12 on the driving plate 1 is sleeved on the driving plate connecting shaft 17 on the double-sided connecting rod 5, and the transition plate connecting shaft 18 of the double-sided connecting rod 5 is hinged in the transition plate round hole 15 on the transition plate 3.
Referring to fig. 1 and 2, the driving disk 1, the driven disk 4 and the transition disk 3 are all disposed in the outer casing 2, the driving shaft 7 of the driving disk 1 extends from the front of the outer casing 2 through the hollow circular ring 14 of the transition disk 3, and the driven shaft 10 of the driven disk 4 extends from the rear of the outer casing 2.
Referring to fig. 1, 2, 4 and 8, a slide limiting groove 9 is formed in the back of the outer casing 2, a slide 6 is arranged in the slide limiting groove 9, the slide 6 can slide or be fixed in the slide limiting groove 9, a central hole 11 is formed in the slide 6, and a driven shaft 10 of the driven disc 4 extends out of the central hole 11. The driven shaft 10 is sleeved with a bearing, and the bearing is fixed in the central hole 11. The front of the outer shell 2 is provided with a transition disc nesting circular ring 13, and a hollow circular ring 14 of the transition disc 3 is nested in the transition disc nesting circular ring 13. The front of the outer shell 2 is provided with a driving shaft positioning hole 8, and a driving shaft 7 of the driving disc 1 extends out of the driving shaft positioning hole 8. The drive shaft positioning hole 8 is eccentrically arranged relative to the hollow circular ring 14. The driving shaft 7 is sleeved with a bearing, and the bearing is fixed in the driving shaft positioning hole 8.
The outer shell 2 of the invention is a rigid whole, the driving disc 1 and the transition disc 3 are arranged on the rigid outer shell 2, the axes of the driving disc 1 and the transition disc 3 are fixed, the driving disc and the transition disc can rotate around the axes of the driving disc and the transition disc, and the connection part can rotate by connecting the driving disc 1 and the transition disc 3 through double-sided connecting rods 5. The distance between the axle center of the driving shaft and the axle center of the connecting shaft of the driving disc 1 is L1, the distance between the axle center of the hollow circular ring 14 of the transition disc 3 and the axle center of the connecting shaft 16 of the transition disc 3 is L2, the eccentric distance between the axle center of the driving shaft 7 and the axle center of the hollow circular ring 14 of the transition disc 3 is L3, the distance between the axle center of the connecting shaft of the driving disc 1 and the axle center of the connecting shaft of the transition disc 3 is L4, l1=l2, l3=l4, and when the driving disc 1 rotates, the driving disc 1, the transition disc 3, the outer shell 2 and the double-sided connecting rod 5 form a parallel four-bar mechanism, so that the double-sided connecting rod is parallel to the eccentric surface of the mechanism when rotating. The rotation of the driving disc 1 is transmitted to the driven disc 4 through the duplex connecting rod, and the driven disc 4 is driven to rotate at a constant speed. The moving direction of the sliding vane 6 is the same as the moving direction of the connecting shaft outside the driven plate 4 in the sliding vane limiting groove 9, and the moving sliding vane 6 can enable the driven plate 4 to move up and down, so that the eccentricity is adjustable when the driving shaft 7 and the driven shaft 10 rotate, and the driven shaft 7 has the characteristic of floating.
The length of the chute 19 of the double-sided connecting rod 5 is not limited by the original structure, and the eccentricity can be adjusted from zero by lengthening the chute 19.
The invention does not generate radial force on the driving shaft 7 and the driven shaft 10 in the transmission process, the friction in the transmission process is mainly rolling friction, most of constituent parts are rigid bodies, and no start-stop impact exists, so that the transmission is reliable, the part loss is small, the rotation is stable, the safety is high, and the service life is long.
The eccentricity adjustment of the invention is realized by adjusting the position of the sliding vane in the sliding vane limiting hole.
The driving disc 1 rotates to drive the transition disc 3 to rotate at a constant speed, the driving disc 1 and the transition disc 3 are connected through the double-sided connecting rod 5, under the constraint of the driving disc 1 and the transition disc 3, the double-sided connecting rod 5 is kept parallel to the eccentric surfaces of the driving shaft 7 and the driven shaft 10 in the following rotation process, and the double-sided connecting rod 5 drives the driven disc 4 to rotate at a constant speed, so that the constant speed rotation of the driving shaft 7 and the driven shaft 10 is realized. The position of the sliding vane 6 is adjusted in the rotating process, so that the eccentricity of the axle center of the driving shaft and the axle center of the driven shaft can be adjusted.
Claims (6)
1. The eccentric coupling with the adjustable eccentricity is characterized by comprising a driving disc (1), an outer shell (2), a transition disc (3), a driven disc (4), a double-sided connecting rod (5) and a sliding sheet (6);
the driving disc (1) is of a hexagonal structure, each corner of the hexagonal structure of the driving disc (1) is provided with a driving disc round hole (12), and the center of the hexagonal structure of the driving disc (1) is fixedly provided with a driving shaft (7);
the driven plate (4) is of a hexagonal structure, each corner of the hexagonal structure of the driven plate (4) is provided with a connecting shaft (16), and the center of the hexagon of the driven plate (4) is fixedly provided with a driven shaft (10);
the double-sided connecting rod (5) comprises a sliding groove (19), a transition disc connecting shaft (18) is arranged at the back of the sliding groove (19), and the transition disc connecting shaft (18) is fixedly connected with the sliding groove (19) through a driving disc connecting shaft (17);
the transition disc (3) comprises a hollow circular ring (14), a hexagonal structure is arranged on the axial surface of the hollow circular ring (14), and each corner of the hexagonal structure is provided with a transition disc round hole (15);
the connecting shaft (16) of the driven plate (4) is arranged in the sliding groove (19) of the double-sided connecting rod (5), the driving plate round hole (12) on the driving plate (1) is sleeved on the driving plate connecting shaft (17) on the double-sided connecting rod (5), and the transition plate connecting shaft (18) of the double-sided connecting rod (5) is hinged in the transition plate round hole (15) on the transition plate (3);
the driving disc (1), the driven disc (4) and the transition disc (3) are all arranged in the outer shell (2), a driving shaft (7) of the driving disc (1) penetrates through a hollow circular ring (14) of the transition disc (3) to extend out of the front side of the outer shell (2), and a driven shaft (10) of the driven disc (4) extends out of the back side of the outer shell (2);
the front surface of the outer shell (2) is provided with a transition disc nesting circular ring (13), and a hollow circular ring (14) of the transition disc (3) is nested in the transition disc nesting circular ring (13);
when the driving disc (1) rotates, the driving disc (1), the transition disc (3), the outer shell (2) and the double-sided connecting rod (5) form a parallel four-bar mechanism, so that the double-sided connecting rod is parallel to an eccentric surface of the mechanism during rotation, and the rotation of the driving disc (1) is transmitted to the driven disc (4) through the double-linked connecting rod to drive the driven disc (4) to rotate at the same speed.
2. The eccentric coupling with the adjustable eccentricity according to claim 1, wherein a sliding vane limit groove (9) is formed in the back surface of the outer casing (2), a sliding vane (6) is arranged in the sliding vane limit groove (9), the sliding vane (6) can slide or be fixed in the sliding vane limit groove (9), a central hole (11) is formed in the sliding vane (6), and a driven shaft (10) of the driven disc (4) extends out of the central hole (11).
3. An eccentric coupling with adjustable eccentricity as claimed in claim 2, characterized in that the driven shaft (10) is provided with a bearing, which is fixed in the central bore (11).
4. An eccentric coupling with adjustable eccentricity according to claim 1, characterized in that the front side of the outer housing (2) is provided with a drive shaft positioning hole (8), and the drive shaft (7) of the drive disc (1) extends out from the drive shaft positioning hole (8).
5. An eccentric coupling with adjustable eccentricity as claimed in claim 4, characterized in that the drive shaft positioning hole (8) is arranged eccentrically with respect to the hollow ring (14).
6. An eccentric coupling with adjustable eccentricity as claimed in claim 4, characterized in that the driving shaft (7) is provided with bearings which are fixed in the driving shaft positioning holes (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911378240.4A CN110925321B (en) | 2019-12-27 | 2019-12-27 | Eccentric coupling with adjustable eccentric distance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911378240.4A CN110925321B (en) | 2019-12-27 | 2019-12-27 | Eccentric coupling with adjustable eccentric distance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110925321A CN110925321A (en) | 2020-03-27 |
| CN110925321B true CN110925321B (en) | 2023-07-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911378240.4A Active CN110925321B (en) | 2019-12-27 | 2019-12-27 | Eccentric coupling with adjustable eccentric distance |
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| CN (1) | CN110925321B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005273841A (en) * | 2004-03-26 | 2005-10-06 | Nix Inc | Oldham coupling |
| JP2007162837A (en) * | 2005-12-14 | 2007-06-28 | Ntn Corp | Shaft coupling |
| CN201973124U (en) * | 2011-01-14 | 2011-09-14 | 徐俊玉 | Eccentric compensation coupler |
| WO2014127660A1 (en) * | 2013-02-25 | 2014-08-28 | Dong Dong | Continuous speed changer |
| WO2018019790A1 (en) * | 2016-07-25 | 2018-02-01 | Valeo Siemens Eautomotive Germany Gmbh | Torque-transmitting shaft connection and production method |
| CN211599318U (en) * | 2019-12-27 | 2020-09-29 | 长安大学 | Eccentric coupling with adjustable eccentricity |
-
2019
- 2019-12-27 CN CN201911378240.4A patent/CN110925321B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005273841A (en) * | 2004-03-26 | 2005-10-06 | Nix Inc | Oldham coupling |
| JP2007162837A (en) * | 2005-12-14 | 2007-06-28 | Ntn Corp | Shaft coupling |
| CN201973124U (en) * | 2011-01-14 | 2011-09-14 | 徐俊玉 | Eccentric compensation coupler |
| WO2014127660A1 (en) * | 2013-02-25 | 2014-08-28 | Dong Dong | Continuous speed changer |
| WO2018019790A1 (en) * | 2016-07-25 | 2018-02-01 | Valeo Siemens Eautomotive Germany Gmbh | Torque-transmitting shaft connection and production method |
| CN211599318U (en) * | 2019-12-27 | 2020-09-29 | 长安大学 | Eccentric coupling with adjustable eccentricity |
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| Publication number | Publication date |
|---|---|
| CN110925321A (en) | 2020-03-27 |
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