CN112343932A - Elastic coupling based on irregular inner ring - Google Patents
Elastic coupling based on irregular inner ring Download PDFInfo
- Publication number
- CN112343932A CN112343932A CN202011332030.4A CN202011332030A CN112343932A CN 112343932 A CN112343932 A CN 112343932A CN 202011332030 A CN202011332030 A CN 202011332030A CN 112343932 A CN112343932 A CN 112343932A
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- China
- Prior art keywords
- driven
- inner ring
- limiting cover
- diameter
- connecting piece
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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
- F16D7/00—Slip couplings, e.g. slipping on overload, for absorbing shock
- F16D7/002—Slip couplings, e.g. slipping on overload, for absorbing shock the torque being transmitted and limited by yielding of an elastomeric race
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Flexible Shafts (AREA)
Abstract
The invention provides an elastic coupling based on an irregular inner ring, which comprises an external protective shell assembly and an internal transmission assembly, wherein the external protective shell assembly comprises a driven shell and a limiting cover body, one end of the driven shell is inserted into the limiting cover body and is fixedly connected with the limiting cover body, the internal transmission assembly comprises a transmission element and a connecting piece, a main body of the transmission element can axially move and is positioned in the limiting cover body, and the connecting piece is positioned in the driven shell; the connecting structure of the combination of the roller and the flexible inner ring is adopted, the slight vibration of the driving shaft rod can be filtered by the self rotation of the roller in the flexible inner ring, and the vibration of the overload protection of the engine can be reduced by the deformation of the flexible inner ring.
Description
Technical Field
The invention relates to a coupling for transmitting torque of power components such as an engine and a motor, in particular to an elastic coupling based on an irregular inner ring.
Background
The coupling is used as a core part for transmitting power in the mechanical field, has a wide application field, and is generally connected with a driving shaft and a driven shaft to transmit torque to enable the driving shaft and the driven shaft to rotate together.
For example, CN204168106U discloses a flexible magnetic attraction type burning-proof coupling, which adopts a magnetic attraction manner to fixedly connect driving pieces and transmission pieces of two couplings together, when the power of the motor is insufficient to drive the working machine to operate, the maximum power of the motor overcomes the magnetic attraction to disconnect the couplings, thereby preventing the motor from being burnt out and realizing the overload protection function; CN111237354A discloses an overload protection structure for a coupling, which is provided with a shear spacer shaft so that when the coupling bears an overload torque, the shear spacer shaft is sheared at a shear groove, thereby protecting the safe operation of unit equipment, and if the unit operation needs to be recovered, the shear spacer shaft is replaced and installed in place again.
However, the coupling in the prior art has a poor effect of isolating slight vibration caused by normal movement of the engine, and the coupling cannot be reconnected immediately after being disconnected due to overload, so that inconvenience still exists in actual operation.
Disclosure of Invention
In view of the above, the invention provides an elastic coupling based on an irregular inner ring, which adopts a connection structure combining a roller and a flexible inner ring, wherein the roller rotates in the flexible inner ring to filter slight vibration of a driving shaft rod, and the deformation of the flexible inner ring can realize the reduction of vibration of overload protection of an engine.
The technical scheme adopted by the invention is as follows: an elastic coupling based on an irregular inner ring is characterized by comprising an external protection shell assembly and an internal transmission assembly, wherein the external protection shell assembly comprises a driven shell and a limiting cover body, one end of the driven shell is inserted into the limiting cover body and fixedly connected with the limiting cover body, specifically, the driven shell can be connected in a conventional connection mode of bolts and nuts or directly connected in a threaded mode, the internal transmission assembly comprises a transmission element and a connecting piece, a main body of the transmission element can axially move and is positioned in the limiting cover body, and the connecting piece is positioned in the driven shell;
the connecting piece is composed of a connecting ring body and a flexible inner ring, the connecting ring body is of a circular structure, a plurality of limiting grooves are formed in the peripheral surface of the connecting ring body along the axial direction, the flexible inner ring is of a barrel-type structure, the cross section of the flexible inner ring is an approximately triangular circle formed by connecting three sections of same arc lines end to end, when the connecting piece is installed inside the driven shell, the connecting piece is fixedly connected with the driven shell relatively through the connecting ring body, and the flexible inner ring is located at one end close to the limiting cover body; a plurality of through holes are circumferentially arrayed on the outer wall of the flexible inner ring;
the driving part main body is of a cylindrical structure, an annular bulge is integrally formed on the peripheral surface of the cylindrical structure, three linkage shafts axially extend on one end face of the cylindrical structure, the three linkage shafts are distributed in a circumferential array mode, a roller is arranged at the end part of each linkage shaft, and the center of each roller is sleeved on a central shaft formed at the end part of each linkage shaft; the outer diameter of the annular bulge is larger than the minimum inner diameter at the port of the limiting cover body and larger than the inner diameter of the first inner diameter section of the driven shell;
and the three rollers of the driving part are all positioned inside the flexible inner ring of the connecting piece, and the diameter of the smallest circle surrounding the three rollers is the same as that of the largest inner diameter circle of the flexible inner ring.
The driven casing internal diameter divide into the great first internal diameter section of diameter and the less second internal diameter section of diameter, be formed with the step face between first internal diameter section and the second internal diameter section, just it closes on in the first internal diameter section be provided with multichannel axial arch on the internal face of step face, when the connecting piece is installed inside the driven casing, the external diameter of the connection ring body of connecting piece with first internal diameter section internal diameter looks adaptation, just the terminal surface butt of connecting the ring body is in on the step face in the driven casing, the protruding card of axial inside the driven casing is established in the spacing recess.
The internal diameter of spacing lid one end is less than the external diameter of driven casing, the internal diameter of the other end are greater than or equal to the external diameter of driven casing, when driven casing and spacing lid fixed connection, the barrel outer wall of driven casing stretches into the inside one section distance of spacing lid, when driver part installs inside the spacing lid, the protruding screens of annular is located between the tip of the little internal diameter of spacing lid and the tip of driven casing.
The width of the axial bulge is slightly smaller than that of the limiting groove, when the axial bulge is assembled in the limiting groove, elastic materials such as rubber are filled on two sides of the axial bulge, so that the connection relation between the connecting piece and the driven shell is changed from a pure rigid structure to be adaptable to micro-amplitude deformation, and the overload protection and shock absorption performance of the coupling is further enhanced.
The elastic coupling has the advantages that:
1. slight vibration of engines and other power machines in normal operation can be filtered through the rotation of the rollers and the elasticity of the universal driving shaft;
2. the flexible inner ring has the shock absorption effect of sudden change of torque when the engine is started, and when the torque is too large, the deformation of the flexible inner ring can enable the roller to change positions to realize overload protection, and after the overload protection, the deformation of the flexible inner ring is recovered, so that the coupler can immediately enter a normal working state.
Drawings
FIG. 1 is a schematic view of the overall construction of the coupling of the present invention;
FIG. 2 is a schematic cross-sectional view of the coupling of the present invention;
FIG. 3 is a schematic illustration of an exploded construction of the coupling of the present invention;
FIG. 4 is a schematic view of the connector structure of the present invention;
FIG. 5 is a schematic view of the drive member of the present invention;
in the figure: 1. the device comprises a driven shell, 2, a limiting cover body, 3, a driving part, 4, a connecting piece, 5, a flexible inner ring, 6, a connecting ring body, 7, a limiting groove, 8, an annular bulge, 9, a linkage shaft, 10 and a roller.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the disclosure herein.
Referring to the drawings, the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, so as to be understood and read by those skilled in the art, and are not used to limit the conditions that the present disclosure can be implemented, so that the present disclosure has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the disclosure of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. Meanwhile, the positional limitation terms used in the present specification are for clarity of description only, and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship therebetween may be regarded as the scope of the present invention without substantial changes in the technical content.
Fig. 1 is a schematic view showing the overall structure of the coupling of the present invention, fig. 2 is a schematic view showing the sectional structure of the coupling of the present invention, and fig. 3 is a schematic view showing the exploded structure of the coupling of the present invention; with reference to fig. 1-3, the elastic coupling based on the irregular inner ring of the present invention includes an external protective shell assembly and an internal transmission assembly, wherein the external protective shell assembly is formed by fixedly connecting a driven shell 1 and a limiting cover 2, specifically, the external protective shell assembly can be connected by a conventional connection manner of bolts and nuts or directly by threads, as shown in the figure, an inner diameter of one end of the limiting cover 2 is smaller than an outer diameter of the driven shell 1, an inner diameter of the other end of the limiting cover 2 is greater than or equal to an outer diameter of the driven shell 1, and when the driven shell 1 is fixedly connected with the limiting cover 2, an outer wall of a cylinder of the driven shell 1 extends into the limiting cover 2 for a; the internal transmission assembly comprises a transmission element 3 and a connecting piece 4, the main body of the transmission element 3 is movably positioned inside the limiting cover body 2, the main body can extend out or retract so that one end of the main body can selectively extend into or be separated from the inside of the connecting piece 4, and the connecting piece 4 is positioned inside the driven shell 1.
As shown in fig. 4, which is a schematic view of the structure of the connecting element of the present invention, the connecting element 4 is composed of a connecting ring body 6 and a flexible inner ring 5, the connecting ring body 6 is a circular ring structure, the outer circumferential surface of the connecting ring body is axially provided with a plurality of limiting grooves 7, the flexible inner ring 5 is a cylinder structure, the cross section of the flexible inner ring is a triangle-like circle formed by connecting three sections of the same arc lines end to end, the outer wall of the flexible inner ring 5 is circumferentially provided with a plurality of through holes, and the through holes reinforce the elasticity of the flexible inner ring 5. Driven 1 internal diameter of casing divide into the great first internal diameter section of diameter and the less second internal diameter section of diameter, be formed with the step face between first internal diameter section and the second internal diameter section, just it closes on in the first internal diameter section be provided with multichannel axial bulge on the internal face of step face, when connecting piece 4 is installed inside driven casing 1, the external diameter of the connection ring body 6 of connecting piece 4 with first internal diameter section internal diameter looks adaptation, just the terminal surface butt of connecting ring body 6 is in on the step face in driven casing 1, the protruding card of axial inside of driven casing 1 is established in spacing recess 7, the prevention connecting piece 4 is at the inside rotary motion of driven casing 1.
Preferably, the width of the axial protrusion is slightly smaller than that of the limiting groove, and when the axial protrusion is fitted in the limiting groove, the two sides of the axial protrusion are filled with an elastic material, such as rubber, so that the connection relationship between the connecting member 4 and the driven housing 1 is changed from a pure rigid structure to be adaptable to slight deformation, thereby further enhancing the overload protection and shock absorption performance of the coupling.
As shown in fig. 5, which is a schematic structural diagram of the driving component of the present invention, a main body of the driving component 3 is a cylindrical structure, an annular protrusion 8 is integrally formed on an outer peripheral surface of the cylindrical structure, three linkage shafts 9 axially extend from one end surface of the cylindrical structure, the three linkage shafts 9 are circumferentially distributed in an array manner, a roller 10 is arranged at an end of each linkage shaft 9, and a center of the roller 10 is sleeved on a central shaft formed at an end of the linkage shaft 9; the outer diameter of the annular bulge 8 is larger than the minimum inner diameter at the port of the limit cover body 2 and is larger than the inner diameter of the first inner diameter section of the driven shell 1.
As shown in fig. 2, when the driving member 3 is mounted inside the limit cover 2, the annular protrusion is locked between the end of the small inner diameter of the limit cover 2 and the end of the driven housing 1, so as to prevent the driving member 3 from disengaging from the coupling and to allow the driving member 3 to have a certain axial movement range.
Referring to fig. 1 to 5, when the driving member 3 of the present invention is installed inside the connecting member 4, the three rollers 10 of the driving member 3 are all located inside the flexible inner ring 5 of the connecting member 4, and the diameter of the smallest circle surrounding the three rollers 10 is the same as the diameter of the largest inner diameter circle of the flexible inner ring 5, that is, when the flexible inner ring 5 is not deformed, the relative positions of the three rollers 10 inside the flexible inner ring 5 cannot be changed, and when the torque of the driving member 3 is too large, the flexible inner ring 5 can be deformed, so that the rollers 10 rotate at the positions inside the flexible inner ring 5, but the flexible inner ring does not rotate or slightly rotates as a whole, so as to achieve the overload protection and the screening vibration effect.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the invention, and it should be understood by those skilled in the art that various modifications and changes in equivalent structure or equivalent flow, or direct or indirect application to other related fields without creative efforts based on the technical solutions of the present invention may be made within the scope of the present invention.
Claims (6)
1. An elastic coupling based on an irregular inner ring is characterized by comprising an external protective shell assembly and an internal transmission assembly, wherein the external protective shell assembly comprises a driven shell and a limiting cover body, one end of the driven shell is inserted into the limiting cover body and fixedly connected with the limiting cover body, the internal transmission assembly comprises a transmission element and a connecting piece, a main body of the transmission element can axially move and is positioned in the limiting cover body, and the connecting piece is positioned in the driven shell;
the connecting piece is composed of a connecting ring body and a flexible inner ring, the connecting ring body is of a circular structure, a plurality of limiting grooves are formed in the peripheral surface of the connecting ring body along the axial direction, the flexible inner ring is of a barrel-type structure, the cross section of the flexible inner ring is an approximately triangular circle formed by connecting three sections of same arc lines end to end, when the connecting piece is installed inside the driven shell, the connecting piece is fixedly connected with the driven shell relatively through the connecting ring body, and the flexible inner ring is located at one end close to the limiting cover body;
the driving part main body is of a cylindrical structure, an annular bulge is integrally formed on the peripheral surface of the cylindrical structure, three linkage shafts axially extend on one end face of the cylindrical structure, the three linkage shafts are distributed in a circumferential array mode, a roller is arranged at the end part of each linkage shaft, and the center of each roller is sleeved on a central shaft formed at the end part of each linkage shaft; the outer diameter of the annular bulge is larger than the minimum inner diameter at the port of the limiting cover body and larger than the inner diameter of the first inner diameter section of the driven shell;
and the three rollers of the driving part are all positioned inside the flexible inner ring of the connecting piece, and the diameter of the smallest circle surrounding the three rollers is the same as that of the largest inner diameter circle of the flexible inner ring.
2. The shaft coupling of claim 1, characterized in that, driven casing internal diameter divide into the great first internal diameter section of diameter and the less second internal diameter section of diameter, be formed with the step face between first internal diameter section and the second internal diameter section, just be provided with multichannel axial arch in the first internal diameter section on the internal wall face that closes on the step face, when the connecting piece was installed inside driven casing, the external diameter of the connection ring body of connecting piece with first internal diameter section internal diameter looks adaptation, just the terminal surface butt of connecting the ring body is in on the step face in the driven casing, the protruding card of axial of driven casing inside is established in the spacing recess.
3. The coupling according to claim 2, wherein the inner diameter of one end of the limiting cover is smaller than the outer diameter of the driven housing, the inner diameter of the other end of the limiting cover is greater than or equal to the outer diameter of the driven housing, when the driven housing is fixedly connected with the limiting cover, the outer wall of the cylinder of the driven housing extends into the limiting cover for a certain distance, and when the driving part is installed inside the limiting cover, the annular protrusion is clamped between the end of the small inner diameter of the limiting cover and the end of the driven housing.
4. A coupling according to claim 3, further characterized in that the axial projection has a width slightly smaller than the width of the retaining groove, and when the axial projection is fitted in the retaining groove, the axial projection is filled with an elastic material on both sides thereof.
5. The coupling according to claim 1, further characterized in that the driven housing and the limit cover are fixedly connected by bolts and nuts or by threads.
6. A coupling according to claim 1, further characterized in that a plurality of through holes are circumferentially arrayed on the outer wall of said flexible inner ring 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011332030.4A CN112343932B (en) | 2020-11-24 | 2020-11-24 | Elastic coupling based on irregular inner ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011332030.4A CN112343932B (en) | 2020-11-24 | 2020-11-24 | Elastic coupling based on irregular inner ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112343932A true CN112343932A (en) | 2021-02-09 |
| CN112343932B CN112343932B (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011332030.4A Active CN112343932B (en) | 2020-11-24 | 2020-11-24 | Elastic coupling based on irregular inner ring |
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| Country | Link |
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| CN (1) | CN112343932B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503107A (en) * | 2020-11-27 | 2021-03-16 | 徐向荣 | Overload elastic protection coupling |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290823A (en) * | 1999-10-04 | 2001-04-11 | 住友重机械工业株式会社 | Shaft coupling structure with speed changing function |
| JP2007211817A (en) * | 2006-02-07 | 2007-08-23 | Ntn Corp | Constant velocity universal joint with torque transmission wheel |
| CN205780394U (en) * | 2016-05-23 | 2016-12-07 | 中国船舶重工集团公司第七一一研究所 | A kind of extension type shaft coupling |
| CN106763266A (en) * | 2016-12-23 | 2017-05-31 | 浙江众邦机电科技有限公司 | A kind of yielding coupling |
| CN107091279A (en) * | 2017-05-09 | 2017-08-25 | 青岛科技大学 | A kind of interior triadius type angular speed universal coupling |
| CN107110247A (en) * | 2014-11-17 | 2017-08-29 | Ntn株式会社 | Drive force transfer mechanism |
-
2020
- 2020-11-24 CN CN202011332030.4A patent/CN112343932B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1290823A (en) * | 1999-10-04 | 2001-04-11 | 住友重机械工业株式会社 | Shaft coupling structure with speed changing function |
| JP2007211817A (en) * | 2006-02-07 | 2007-08-23 | Ntn Corp | Constant velocity universal joint with torque transmission wheel |
| CN107110247A (en) * | 2014-11-17 | 2017-08-29 | Ntn株式会社 | Drive force transfer mechanism |
| CN205780394U (en) * | 2016-05-23 | 2016-12-07 | 中国船舶重工集团公司第七一一研究所 | A kind of extension type shaft coupling |
| CN106763266A (en) * | 2016-12-23 | 2017-05-31 | 浙江众邦机电科技有限公司 | A kind of yielding coupling |
| CN107091279A (en) * | 2017-05-09 | 2017-08-25 | 青岛科技大学 | A kind of interior triadius type angular speed universal coupling |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112503107A (en) * | 2020-11-27 | 2021-03-16 | 徐向荣 | Overload elastic protection coupling |
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| Publication number | Publication date |
|---|---|
| CN112343932B (en) | 2022-06-03 |
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Effective date of registration: 20220511 Address after: 317511 southeast industrial gathering point, Songmen Town, Wenling City, Taizhou City, Zhejiang Province (in Wenling Xinyue New Material Co., Ltd.) Applicant after: ZHEJIANG ZHEYAN COLD EXTRUSION Co.,Ltd. Address before: 266580 No. 66 Changjiang West Road, Huangdao District, Qingdao, Shandong. Applicant before: Xu Xiangrong |
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