CN208348275U - Transmission shaft and key drive mechanism - Google Patents
Transmission shaft and key drive mechanism Download PDFInfo
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- CN208348275U CN208348275U CN201820803965.8U CN201820803965U CN208348275U CN 208348275 U CN208348275 U CN 208348275U CN 201820803965 U CN201820803965 U CN 201820803965U CN 208348275 U CN208348275 U CN 208348275U
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- matrix
- keyway
- transmission shaft
- rotation stop
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Abstract
The utility model 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 cooperating 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, it can reduce the abrasion between driving key and keyway simultaneously, extend the service life of transmission shaft.
Description
Technical field
The utility model relates to a kind of transmission shaft and key drive mechanisms.
Background technique
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 equipped with an axially extending keyway in the corresponding position of transmission shaft and axle sleeve, driving key is installed in keyway to realize
The transmitting 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, deforms the keyway of transmission shaft.
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 (i.e. matrix), passes
One end of moving axis ontology is the rotation stop section for cooperating 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 and
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.
Utility model content
The purpose of this utility model is to provide a kind of transmission shaft, to solve the transversal of the keyway of transmission shaft in the prior art
Face is rectangle, is right angle transition between the bottom wall and side wall of keyway, will appear the problems in stress collection between bottom wall and side wall；This
Utility model additionally provides a kind of key drive mechanism using the transmission shaft.
In order to solve the above-mentioned technical problem, the technical solution of the transmission shaft of the utility model are as follows:
A kind of transmission shaft, including matrix, matrix have the rotation stop section for cooperating with axle sleeve rotation stop, and the periphery of rotation stop section is set
There is the axially extending keyway along matrix, the keyway is curved surface along the section of the axial direction perpendicular to matrix.
The beneficial 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 of the axial 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 between guide rod section and rotation stop section by changeover portion, transition
The outer diameter of section is gradually increased along the direction of rotation stop section to guide rod section.Guide rod section is connect with rotation stop section by changeover portion, changeover portion
Outer diameter is gradually increased, transmission shaft entirety rounding off, stress concentration occurs when avoiding using multi-diameter shaft, transmission shaft can be improved
Load-carrying ability extends the service life of transmission shaft.
The changeover portion is circular platform type structure.The processing is simple for the changeover portion of circular platform type structure.
The technical solution of the key drive mechanism of the utility model are as follows:
A kind of key drive mechanism, including transmission shaft and the axle sleeve being set on transmission shaft, the transmission shaft includes matrix, base
Body has the rotation stop section for cooperating with axle sleeve rotation stop, and the periphery of rotation stop section is equipped with the axially extending keyway along matrix, described
Axle sleeve is equipped with the mating groove being adapted to keyway at position corresponding with the keyway of transmission shaft, is equipped with transmission in keyway and mating groove
Key, the keyway be curved surface along the section of the axial direction perpendicular to matrix, and the driving key has to be adapted to the curved surface
Face adapted.
The beneficial 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 of the axial 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 between guide rod section and rotation stop section by changeover portion, transition
The outer diameter of section is gradually increased along the direction of rotation stop section to guide rod section.Guide rod section is connect with rotation stop section by changeover portion, changeover portion
Outer diameter is gradually increased, transmission shaft entirety rounding off, stress concentration occurs when avoiding using multi-diameter shaft, transmission shaft can be improved
Load-carrying ability extends the service life of transmission shaft.
The changeover portion is circular platform type structure.The processing is simple for the changeover portion of circular platform type structure.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the transmission shaft of the embodiment 1 of the key drive mechanism of the utility model；
Fig. 2 is the cross-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 utility model；
Fig. 4 is the structural schematic diagram of the driving key of the embodiment 1 of the key drive mechanism of the utility model；
Fig. 5 is the assembling schematic diagram of the embodiment 1 of the key drive mechanism of the utility model；
Fig. 6 is the structural schematic diagram of the transmission shaft of the embodiment 3 of the key drive mechanism of the utility model.
It is respectively marked in figure: 1. guide rod sections；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 embodiment
The embodiments of the present invention is described further with reference to the accompanying drawing.
The embodiment 1 of the key drive mechanism of the utility model as shown in Figures 1 to 5, including transmission shaft 9 and is set in biography
Axle sleeve 7 on moving axis 9, transmission shaft 9 are equipped with keyway 4, are equipped with mating groove, keyway at the position corresponding with keyway 4 on axle sleeve 7
4 is interior equipped with driving key 8 with mating groove.Transmission shaft 9 includes matrix, and matrix has 1 He of guide rod section positioned at the axial middle part of matrix
Positioned at the rotation stop section 2 of the axial ends of matrix, rotation stop section 2 is used to cooperate with 7 rotation stop of axle sleeve to transmit torque；In other embodiments
In, rotation stop section 2 can also be located at the middle part of matrix, 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 is gradually increased along the direction of rotation stop section 2 to 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 is equal to each other.
One of them of the rotation stop section 2 of the axial ends of matrix be equipped with centre bore 5, another be equipped with threaded hole 6, in
Heart hole 5 facilitates transmission shaft when processing to the heart, and threaded hole 6 connect convenient for transmission shaft with other equipment.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 Yu 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, passes through arc transition between the two neighboring side of driving key 8, avoids the occurrence of corner angle, matching on axle sleeve 9
Closing slot is the U-type groove being adapted to driving key 8, passes through arc transition between the slot bottom and cell wall of U-type groove.
The embodiment 2 of the key drive mechanism of the utility model, the difference from embodiment 1 is that: keyway is along vertical in embodiment 1
It is directly arc surface in the section of the axial direction of matrix, in the present embodiment, keyway is cut along the axial direction perpendicular to matrix
Face may be ellipsoid.
The embodiment 3 of the key drive mechanism of the utility model as shown in fig. 6, the difference from embodiment 1 is that: embodiment 1
The changeover portion of middle transmission shaft is circular platform type structure to realize that outer diameter is gradually increased along the direction of rotation stop section to guide rod section, in this implementation
In example, the outer peripheral surface of rotary table is curved surface, rounding off.
The utility model additionally provides a kind of embodiment of transmission shaft, times of specific structure and above-mentioned key drive mechanism
The specific structure of transmission shaft in one embodiment 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 cooperating 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 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 cooperating 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, is equipped with transmission 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. key drive mechanism 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. key drive mechanism 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 between guide rod section and rotation stop section by changeover portion, 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 |
|---|---|---|---|
| CN201820803965.8U CN208348275U (en) | 2018-05-28 | 2018-05-28 | Transmission shaft and key drive mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820803965.8U CN208348275U (en) | 2018-05-28 | 2018-05-28 | Transmission shaft and key drive mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208348275U true CN208348275U (en) | 2019-01-08 |
Family
ID=64891141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820803965.8U Active CN208348275U (en) | 2018-05-28 | 2018-05-28 | Transmission shaft and key drive mechanism |
Country Status (1)
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|---|---|
| CN (1) | CN208348275U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518405A (en) * | 2018-05-28 | 2018-09-11 | 河南森源电气股份有限公司 | A kind of transmission shaft and key drive mechanism |
-
2018
- 2018-05-28 CN CN201820803965.8U patent/CN208348275U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518405A (en) * | 2018-05-28 | 2018-09-11 | 河南森源电气股份有限公司 | A kind of transmission shaft and key drive mechanism |
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