CN108518405A - A kind of transmission shaft and key drive mechanism - Google Patents
A kind of transmission shaft and key drive mechanism Download PDFInfo
- Publication number
- CN108518405A CN108518405A CN201810525758.5A CN201810525758A CN108518405A CN 108518405 A CN108518405 A CN 108518405A CN 201810525758 A CN201810525758 A CN 201810525758A CN 108518405 A CN108518405 A CN 108518405A
- Authority
- CN
- China
- Prior art keywords
- matrix
- keyway
- transmission shaft
- rotation stop
- section
- 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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Classifications
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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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
Abstract
The present invention relates to a kind of transmission shaft and key drive mechanisms.Key drive mechanism includes transmission shaft and the axle sleeve that is set on transmission shaft, the transmission shaft includes matrix, matrix has the rotation stop section for coordinating with axle sleeve rotation stop, the periphery of rotation stop section is equipped with the axially extending keyway along matrix, the axle sleeve is equipped with the mating groove being adapted to keyway at position corresponding with the keyway of transmission shaft, driving key is equipped in keyway and mating groove, the keyway is curved surface along the section of the axial direction perpendicular to matrix, and the driving key has the face adapted being adapted to the curved surface.Keyway is curved surface along the section of the axial direction perpendicular to matrix, the contact area that driving key and keyway can be increased eliminates the right angle on the cell wall of keyway, avoids stress concentration phenomenon, the abrasion between driving key and keyway can be reduced simultaneously, extend the service life of transmission shaft.
Description
Technical field
The present invention relates to a kind of transmission shaft and key drive mechanisms.
Background technology
Transmission shaft is common actuated element in mechanical equipment, can be turned round with the output axis connection of power-equipment with being driven
Square.Axle sleeve is equipped between existing transmission shaft and output shaft, transmission shaft is connect with output shaft by keyway arrangements, ordinary circumstance
Under, it is set there are one axially extending keyway in the corresponding position of transmission shaft and axle sleeve, driving key is installed in keyway to realize
The transmission of torque.But when a keyway and driving key cooperation, only has one stress point of keyway on transmission shaft, needing high-torque
When transmission, stress concentration phenomenon can be generated at keyway, the keyway of transmission shaft is made to deform.
Application publication number is CN105587747A, and data of publication of application is that the Chinese invention patent application of 2016.05.18 discloses
A kind of shaft end is equipped with the Large-torsion transmisson axis of gear structure, which includes transmission shaft body（That is matrix）, pass
One end of moving axis ontology is the rotation stop section for coordinating with axle sleeve rotation stop, and the excircle of rotation stop section is laid at least two along base
The axially extending keyway of body.
Above-mentioned shaft end is equipped with the Large-torsion transmisson axis of gear structure by being evenly distributed with extremely on the excircle of transmission shaft body
Few two keyways can make torque be distributed more balance, uniform stabilization in the circumferential direction of transmission shaft.But keyway is transversal
Face is rectangle, between the bottom wall and side wall of keyway be right angle transition, by keyway arrangements transmit torque when, the bottom wall of keyway with
It will appear stress concentration between side wall, while the cell wall of driving key and keyway is easy to happen abrasion, influence transmission shaft uses the longevity
Life.
Invention content
The purpose of the present invention is to provide a kind of transmission shafts, and the cross section to solve the keyway of transmission shaft in the prior art is
Rectangle, the problem of being right angle transition, stress concentration is will appear between bottom wall and side wall between the bottom wall and side wall of keyway；The present invention
Additionally provide a kind of key drive mechanism using the transmission shaft.
In order to solve the above-mentioned technical problem, the technical solution of transmission shaft of the invention is：
There is the rotation stop section for coordinating with axle sleeve rotation stop, the periphery of rotation stop section to be equipped with edge for a kind of transmission shaft, including matrix, matrix
The axially extending keyway of matrix, the keyway are curved surface along the section of the axial direction perpendicular to matrix.
The advantageous effect of the technical solution is：Keyway is curved surface along the section of the axial direction perpendicular to matrix, can be with
The contact area for increasing driving key and keyway, eliminates the right angle on the cell wall of keyway, avoids stress concentration phenomenon, while can
To reduce the abrasion between driving key and keyway, the service life of transmission shaft is extended.
The keyway is arc surface along the section of the axial direction perpendicular to matrix.Arc surface is easy to process.
The keyway at least there are two and be uniformly distributed along the circumferential direction of matrix.Keyway is uniformly distributed along the circumferential direction of matrix, is passed
Moving axis uniform force in the circumferential, avoids torque from being applied to the side of transmission shaft and stress concentration occur.
The rotation stop section is located at the end at the axial both ends of matrix, and described matrix further includes positioned at the axial middle part of matrix
Guide rod section, the outer diameter of the rotation stop section are less than the outer diameter of guide rod section, are connected by changeover portion between guide rod section and rotation stop section, transition
The outer diameter of section gradually increases along rotation stop section to the direction of guide rod section.Guide rod section is connect with rotation stop section by changeover portion, changeover portion
Outer diameter gradually increases, transmission shaft entirety rounding off, stress concentration occurs when avoiding using multi-diameter shaft, can improve transmission shaft
Load-carrying ability extends the service life of transmission shaft.
The changeover portion is circular platform type structure.The changeover portion processing of circular platform type structure is simple.
The technical solution of key drive mechanism of the present invention is：
A kind of key drive mechanism, including transmission shaft and the axle sleeve being set on transmission shaft, the transmission shaft includes matrix, matrix tool
It is useful for the rotation stop section coordinated with axle sleeve rotation stop, the periphery of rotation stop section is equipped with the axially extending keyway along matrix, the axle sleeve
It is equipped with the mating groove being adapted to keyway at position corresponding with the keyway of transmission shaft, driving key is equipped in keyway and mating groove,
The keyway is curved surface along the section of the axial direction perpendicular to matrix, and the driving key has the adaptation being adapted to the curved surface
Face.
The advantageous effect of the technical solution is：Keyway is curved surface along the section of the axial direction perpendicular to matrix, can be with
The contact area for increasing driving key and keyway, eliminates the right angle on the cell wall of keyway, avoids stress concentration phenomenon, while can
To reduce the abrasion between driving key and keyway, the service life of transmission shaft is extended.
The keyway is arc surface along the section of the axial direction perpendicular to matrix.Arc surface is easy to process.
The keyway at least there are two and be uniformly distributed along the circumferential direction of matrix.Keyway is uniformly distributed along the circumferential direction of matrix, is passed
Moving axis uniform force in the circumferential, avoids torque from being applied to the side of transmission shaft and stress concentration occur.
The rotation stop section is located at the end at the axial both ends of matrix, and described matrix further includes positioned at the axial middle part of matrix
Guide rod section, the outer diameter of the rotation stop section are less than the outer diameter of guide rod section, are connected by changeover portion between guide rod section and rotation stop section, transition
The outer diameter of section gradually increases along rotation stop section to the direction of guide rod section.Guide rod section is connect with rotation stop section by changeover portion, changeover portion
Outer diameter gradually increases, transmission shaft entirety rounding off, stress concentration occurs when avoiding using multi-diameter shaft, can improve transmission shaft
Load-carrying ability extends the service life of transmission shaft.
The changeover portion is circular platform type structure.The changeover portion processing of circular platform type structure is simple.
Description of the drawings
Fig. 1 is the structural schematic diagram of the transmission shaft of the embodiment 1 of the key drive mechanism of the present invention；
Fig. 2 is the sectional view along line A-A of the transmission shaft of Fig. 1；
Fig. 3 is the structural schematic diagram of the axle sleeve of the embodiment 1 of the key drive mechanism of the present invention；
Fig. 4 is the structural schematic diagram of the driving key of the embodiment 1 of the key drive mechanism of the present invention；
Fig. 5 is the assembling schematic diagram of the embodiment 1 of the key drive mechanism of the present invention；
Fig. 6 is the structural schematic diagram of the transmission shaft of the embodiment 3 of the key drive mechanism of the present invention.
It is respectively marked in figure：1. guide rod section；2. rotation stop section；3. changeover portion；4. keyway；5. centre bore；6. threaded hole；7. axis
Set；8. driving key；9. transmission shaft.
Specific implementation mode
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The embodiment 1 of the key drive mechanism of the present invention as shown in Figures 1 to 5, including transmission shaft 9 and is set in transmission shaft 9
On axle sleeve 7, transmission shaft 9 is equipped with keyway 4, is equipped with mating groove at the position corresponding with keyway 4 on axle sleeve 7, keyway 4 with match
It closes and is equipped with driving key 8 in slot.Transmission shaft 9 includes matrix, and matrix has the guide rod section 1 at the axial middle part for being located at matrix and is located at base
The rotation stop section 2 at the axial both ends of body, rotation stop section 2 are used to coordinate to transmit torque with 7 rotation stop of axle sleeve；In other embodiments, only
The middle part of matrix can also be located at by turning section 2, can also be only located at the end of matrix axial direction one end.
Matrix generally cylindrical structure, the outer diameter of rotation stop section 2 are less than the outer diameter of guide rod section 1, rotation stop section 2 and guide rod section 1
Between connected by changeover portion 3, the outer diameter of changeover portion 3 gradually increases along rotation stop section 2 to the direction of guide rod section 1.In the present embodiment
In, changeover portion 3 is circular platform type structure, and the outer diameter at the both ends of changeover portion 3 is outer with the outer diameter of rotation stop section 2 and guide rod section 1 respectively
Diameter correspondent equal.
One of rotation stop section 2 at axial both ends of matrix be equipped with centre bore 5, another equipped with threaded hole 6, in
The heart, threaded hole 6 are connect convenient for transmission shaft with other equipment when heart hole 5 facilitates transmission shaft to process.The periphery of rotation stop section 2 is equipped with
Along the axially extending keyway 4 of rotation stop section 2, one end of keyway 4 extends to the axial end face of rotation stop section 2, the other end is extended to the over
Cross the axial end face of section 3.In the present embodiment, there are three keyway 4 is uniformly distributed along the circumferential direction of rotation stop section 2, transmission shaft 9 can be made
Uniform force in the circumferential avoids torque from being applied to the side of transmission shaft 9 and stress concentration occur；In other embodiments, key
Slot 4 or the other quantities such as one, two, four or six are specifically determined according to the specification of transmission shaft.
Keyway 4 is curved surface along the section of the axial direction perpendicular to matrix, can increase the contact surface of driving key 8 and keyway
Product, eliminates the right angle on cell wall, avoids stress concentration phenomenon, while can reduce the abrasion between driving key 8 and keyway,
Extend the service life of transmission shaft 9.In the present embodiment, the cell wall of keyway 4 is arc surface, and arc surface is easy to process.
The generally cube columnar structures of driving key 8, driving key 8 have for the face adapted with the cooperation of the cell wall of keyway 4, should
Face adapted is arc surface, by arc transition between the two neighboring side of driving key 8, avoids the occurrence of corner angle, matching on axle sleeve 9
It is the U-type groove being adapted to driving key 8 to close slot, passes through arc transition between the slot bottom and cell wall of U-type groove.
The present invention key drive mechanism embodiment 2, with embodiment 1 difference lies in：In embodiment 1 keyway along perpendicular to
The section of the axial direction of matrix is arc surface, and in the present embodiment, keyway is along the section of the axial direction perpendicular to matrix
It can be ellipsoid.
The present invention key drive mechanism embodiment 3 as shown in fig. 6, with embodiment 1 difference lies in：It is passed in embodiment 1
The changeover portion of moving axis be circular platform type structure to realize that outer diameter gradually increases along the direction of rotation stop section to guide rod section, in the present embodiment
In, the peripheral surface of round platform is curved surface, rounding off.
The present invention also provides a kind of embodiment of transmission shaft, any reality of concrete structure and above-mentioned key drive mechanism
The concrete structure for applying the transmission shaft in example is identical, and details are not described herein again.
Claims (10)
1. a kind of transmission shaft, including matrix, matrix has the rotation stop section for coordinating with axle sleeve rotation stop, and the periphery of rotation stop section is equipped with
Along the axially extending keyway of matrix, it is characterised in that：The keyway is curved surface along the section of the axial direction perpendicular to matrix.
2. transmission shaft according to claim 1, it is characterised in that：The keyway is cut along the axial direction perpendicular to matrix
Face is arc surface.
3. transmission shaft according to claim 1 or 2, it is characterised in that：The keyway at least there are two and along the week of matrix
To being uniformly distributed.
4. transmission shaft according to claim 1 or 2, it is characterised in that：The rotation stop section is located at the axial both ends of matrix
End, described matrix further include the guide rod section positioned at the axial middle part of matrix, and the outer diameter of the rotation stop section is less than the outer of guide rod section
Diameter is connected between guide rod section and rotation stop section by changeover portion, and the outer diameter of changeover portion gradually increases along rotation stop section to the direction of guide rod section
Greatly.
5. transmission shaft according to claim 4, it is characterised in that：The changeover portion is circular platform type structure.
6. a kind of key drive mechanism, including transmission shaft and the axle sleeve being set on transmission shaft, the transmission shaft includes matrix, matrix
With the rotation stop section for coordinating with axle sleeve rotation stop, the periphery of rotation stop section is equipped with the axially extending keyway along matrix, the axis
It is placed on the mating groove for being equipped at position corresponding with the keyway of transmission shaft and being adapted to keyway, transmission is equipped in keyway and mating groove
Key, it is characterised in that：The keyway is curved surface along the section of the axial direction perpendicular to matrix, the driving key have with it is described
The face adapted of curved surface adaptation.
7. key drive mechanism according to claim 6, it is characterised in that：The keyway is along the axial direction perpendicular to matrix
Section be arc surface.
8. the key drive mechanism described according to claim 6 or 7, it is characterised in that：The keyway at least there are two and along matrix
Circumferential direction be uniformly distributed.
9. the key drive mechanism described according to claim 6 or 7, it is characterised in that：The rotation stop section is located at axial the two of matrix
The end at end, described matrix further include the guide rod section positioned at the axial middle part of matrix, and the outer diameter of the rotation stop section is less than guide rod section
Outer diameter, connected by changeover portion between guide rod section and rotation stop section, the outer diameter of changeover portion along rotation stop section to the direction of guide rod section by
It is cumulative big.
10. key drive mechanism according to claim 9, it is characterised in that：The changeover portion is circular platform type structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810525758.5A CN108518405A (en) | 2018-05-28 | 2018-05-28 | A kind of transmission shaft and key drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810525758.5A CN108518405A (en) | 2018-05-28 | 2018-05-28 | A kind of transmission shaft and key drive mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108518405A true CN108518405A (en) | 2018-09-11 |
Family
ID=63427782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810525758.5A Pending CN108518405A (en) | 2018-05-28 | 2018-05-28 | A kind of transmission shaft and key drive mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108518405A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700824A (en) * | 2021-07-28 | 2021-11-26 | 东风汽车集团股份有限公司 | Camshaft, engine and vehicle |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203201994U (en) * | 2013-04-24 | 2013-09-18 | 宁波创世轴业有限公司 | Gear shaft |
| CN203895343U (en) * | 2014-05-30 | 2014-10-22 | 江山市森源电器有限公司 | Locking mechanism for indoor high-voltage isolating switch |
| CN106523513A (en) * | 2016-12-30 | 2017-03-22 | 苏州沃诺斯精密机械有限公司 | Transmission connecting shaft |
| CN207195284U (en) * | 2017-09-25 | 2018-04-06 | 珠海格力电器股份有限公司 | Impeller transmission structure and centrifugal compressor |
| CN208348275U (en) * | 2018-05-28 | 2019-01-08 | 河南森源电气股份有限公司 | Transmission shaft and key drive mechanism |
-
2018
- 2018-05-28 CN CN201810525758.5A patent/CN108518405A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203201994U (en) * | 2013-04-24 | 2013-09-18 | 宁波创世轴业有限公司 | Gear shaft |
| CN203895343U (en) * | 2014-05-30 | 2014-10-22 | 江山市森源电器有限公司 | Locking mechanism for indoor high-voltage isolating switch |
| CN106523513A (en) * | 2016-12-30 | 2017-03-22 | 苏州沃诺斯精密机械有限公司 | Transmission connecting shaft |
| CN207195284U (en) * | 2017-09-25 | 2018-04-06 | 珠海格力电器股份有限公司 | Impeller transmission structure and centrifugal compressor |
| CN208348275U (en) * | 2018-05-28 | 2019-01-08 | 河南森源电气股份有限公司 | Transmission shaft and key drive mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113700824A (en) * | 2021-07-28 | 2021-11-26 | 东风汽车集团股份有限公司 | Camshaft, engine and vehicle |
| CN113700824B (en) * | 2021-07-28 | 2023-12-19 | 东风汽车集团股份有限公司 | Camshaft, engine and vehicle |
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