CN210769893U - Telescopic rotary transmission shaft structure - Google Patents
Telescopic rotary transmission shaft structure Download PDFInfo
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- CN210769893U CN210769893U CN201921852983.6U CN201921852983U CN210769893U CN 210769893 U CN210769893 U CN 210769893U CN 201921852983 U CN201921852983 U CN 201921852983U CN 210769893 U CN210769893 U CN 210769893U
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- spline shaft
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- spline
- transmission spline
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Abstract
The utility model discloses a telescopic rotary transmission shaft structure, which comprises a transmission spline shaft group and a locking part arranged on the transmission spline shaft group and close to a power output end; the transmission spline shaft group comprises three transmission spline shafts extending from a power input end to a power output end, namely a first transmission spline shaft, a second transmission spline shaft and a third transmission spline shaft; a groove extending along the length direction of the third transmission spline shaft is prefabricated in the circumferential direction of the third transmission spline shaft; the locking member engages the groove of the third drive spline shaft to limit disengagement of the third drive spline shaft from the second drive spline shaft. The utility model discloses a transmission shaft structure forms into nested sliding connection structure each other with three transmission integral key shafts, relies on the meshing of spline to accomplish power transmission simultaneously, requires to realize transmission shaft length freely to adjust according to the wheel interval change of difference, novel structure, flexible effectual, power transmission are not influenced.
Description
Technical Field
The utility model relates to the technical field of agricultural machinery, especially, relate to a scalable rotating transmission shaft structure is used in agricultural machine power transmission.
Background
With the development of science and technology and the increasing demand of people for food, agriculture enters the mechanical production era, developed agricultural machinery basically replaces manual operation, and high efficiency and good operation effect brought by the agricultural machinery are achievements of the era and the science and technology development.
In the prior art, agricultural machinery generally needs to be provided with a power mechanism, and power output by the power mechanism is transmitted to wheels through a transmission shaft so that the agricultural machinery can walk; due to the difference of ridge distances, the transmission shaft is required to have a telescopic function, the distance between wheels is adjusted by the telescopic function of the transmission shaft, and the power transmission effect can not be influenced after the adjustment.
The transmission shaft adjusting structure in the prior art is too complicated, and the stability and the precision of the positioning structure after adjustment are not high, so that the technical personnel in the field need to improve the transmission shaft to be suitable for the use of the transmission power of the agricultural machinery in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel structure, have flexible function, integrated scalable rotatory transmission shaft structure that has locking part.
In order to achieve the above object, the present invention provides the following technical solutions:
the utility model discloses a scalable rotatory transmission shaft structure, include:
the transmission spline shaft set is provided with a power input end in transmission connection with an external power output mechanism and a power output end in transmission connection with the wheels; and
the locking component is arranged on the transmission spline shaft group and close to the power output end;
the transmission spline shaft group comprises three transmission spline shafts extending from a power input end to a power output end, namely a first transmission spline shaft, a second transmission spline shaft and a third transmission spline shaft;
one end, far away from the second transmission spline shaft, of the first transmission spline shaft is formed as the power input end, and one end, far away from the second transmission spline shaft, of the third transmission spline shaft is formed as the power output end;
a groove extending along the length direction of the third transmission spline shaft is prefabricated in the circumferential direction of the third transmission spline shaft;
the locking member engages the groove of the third drive spline shaft to limit disengagement of the third drive spline shaft from the second drive spline shaft.
Further, the first transmission spline shaft comprises a main body and a spline body formed on the main body and far away from the power input end;
the end part of the main body, which is far away from one end of the spline body, is provided with a first cross-axle type universal coupling in a transmission way through a chain wheel, and the first cross-axle type universal coupling is in transmission connection with an external power output mechanism to form the power input end;
the main body is of a cylindrical structure, a first sliding cavity is formed in the main body, and a first spline groove is formed in the surface of the spline body;
the joint of the main body and the spline body is provided with a ring platform;
the surface of the second transmission spline shaft is provided with a second spline groove matched with the first spline groove, and the second transmission spline shaft is connected in the first transmission spline shaft in a sliding manner;
a baffle is welded and fixed at the end part of the second transmission spline shaft extending into the main body;
when the second transmission spline shaft slides along the first transmission spline shaft, the separation of the second transmission spline shaft from the first transmission spline shaft is limited through the baffle and the ring platform;
the second transmission spline shaft receives the power transmitted by the first transmission spline shaft through the meshing of the second spline groove and the first spline groove and rotates.
Further, a second sliding cavity is formed inside the second transmission spline shaft;
the third transmission spline shaft is connected in the second transmission spline shaft in a sliding manner;
the surface of the third transmission spline shaft is provided with a third spline groove;
the third spline grooves and the second spline grooves are matched to form meshing, and the third transmission spline shaft receives power transmitted by the second transmission spline shaft through the meshing of the third spline grooves and the second spline grooves and rotates;
a groove is milled at the protruding position of any one third spline groove of the third transmission spline shaft;
the end part of the second transmission spline shaft is provided with the locking component along the radial direction;
the locking component is a fastening bolt;
the locking member end is embedded in the groove.
Furthermore, the tip of third transmission integral key shaft has linked firmly second cross axle type universal joint, second cross axle type universal joint is connected with the wheel transmission in order to form power take off end.
In the technical scheme, the utility model provides a scalable rotatory transmission shaft structure has following beneficial effect:
the utility model discloses a transmission shaft structure forms into nested sliding connection structure each other with three transmission integral key shafts, relies on the meshing of spline to accomplish power transmission simultaneously, requires to realize transmission shaft length freely to adjust according to the wheel interval change of difference, novel structure, flexible effectual, power transmission are not influenced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to these drawings.
Fig. 1 is a schematic structural view of a retractable rotary transmission shaft structure provided in an embodiment of the present invention;
fig. 2 is a front view of a retractable rotary transmission shaft structure provided in an embodiment of the present invention;
FIG. 3 is a sectional view taken along line A-A of FIG. 2;
fig. 4 is a schematic structural view of a third transmission spline shaft of the retractable rotary transmission shaft structure provided in the embodiment of the present invention.
Description of reference numerals:
1. a first drive spline shaft; 2. a second drive spline shaft; 3. a third drive spline shaft; 4. a locking member; 5. a sprocket;
101. a main body; 102. a spline body; 103. a first spline groove; 104. a first cross-axle type universal coupling; 105. a ring platform; 106. a first sliding chamber;
201. a second spline groove; 202. a baffle plate; 203. a second sliding chamber;
301. a third spline groove; 302. a second cross-shaft type universal coupling; 303. a groove.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
See fig. 1-4;
the utility model discloses a scalable rotatory transmission shaft structure, include:
the transmission spline shaft set is provided with a power input end in transmission connection with an external power output mechanism and a power output end in transmission connection with the wheels; and
the locking component 4 is arranged on the transmission spline shaft group and close to the power output end;
the transmission spline shaft group comprises three transmission spline shafts extending from a power input end to a power output end, namely a first transmission spline shaft 1, a second transmission spline shaft 2 and a third transmission spline shaft 3;
one end of the first transmission spline shaft 1, which is far away from the second transmission spline shaft 2, is formed as a power input end, and one end of the third transmission spline shaft 3, which is far away from the second transmission spline shaft 2, is formed as a power output end;
the third transmission spline shaft 3 is pre-formed with a groove 303 extending in the length direction of the third transmission spline shaft 3 in the circumferential direction;
locking members 4 engage grooves 303 of third drive spline shaft 3 to restrict third drive spline shaft 3 from disengaging from second drive spline shaft 2.
The transmission shaft structure of the embodiment can change the length of the transmission shaft and smoothly transmit power in a mode that three transmission spline shafts are connected in a sliding mode along the axial direction of the transmission spline shafts and form a meshing connection structure in a circumferential direction in a spline mode, and the length of the transmission shaft can be changed in a sliding mode when the agricultural machine automatically adjusts the distance between the wheels. Meanwhile, in order to avoid the three transmission spline shafts from being separated when sliding, a locking part capable of locking the transmission spline shafts is designed to ensure normal work.
Preferably, the first transmission spline shaft 1 in the present embodiment includes a main body 101, and a spline body 102 formed on the main body 101 away from the power input end;
the end part of one end of the main body 101, which is far away from the spline body 102, is in transmission connection with a first cross-axle type universal coupling 104 through a chain wheel 5, and the first cross-axle type universal coupling 104 is in transmission connection with an external power output mechanism to form a power input end;
the main body 101 is a cylindrical structure with a first sliding cavity 106 formed inside, and a first spline groove 103 is formed on the surface of the spline body 102;
the joint of the main body 101 and the spline body 102 is provided with a ring platform 105;
the surface of the second transmission spline shaft 2 is provided with a second spline groove 201 matched with the first spline groove 103, and the second transmission spline shaft 2 is connected in the first transmission spline shaft 1 in a sliding manner;
a baffle plate 202 is welded and fixed at the end part of the second transmission spline shaft 2 extending into the main body 101;
when the second transmission spline shaft 2 slides along the first transmission spline shaft 1, the separation of the second transmission spline shaft 2 from the first transmission spline shaft 1 is limited by the baffle plate 202 and the annular platform 105;
second drive spline shaft 2 receives the power transmitted from first drive spline shaft 1 and rotates by the engagement of second spline grooves 201 with first spline grooves 103.
In addition, a second sliding cavity 203 is formed inside the second transmission spline shaft 1;
the third transmission spline shaft 3 is connected in the second transmission spline shaft 2 in a sliding manner;
the surface of the third transmission spline shaft 3 is provided with a third spline groove 301;
the third spline grooves 301 and the second spline grooves 201 are matched to form engagement, and the third transmission spline shaft 3 receives power transmitted by the second transmission spline shaft 2 through the engagement of the third spline grooves 301 and the second spline grooves 202 and rotates;
a groove 303 is milled at the protruding position of any third spline groove 301 of the third transmission spline shaft 3;
the end part of the second transmission spline shaft 2 is provided with a locking part 4 along the radial direction;
the locking member 4 is a fastening bolt;
the end of the locking member 4 is fitted into the groove 303.
The present embodiment specifically describes the structure of three transmission spline shafts, namely, the first transmission spline shaft 1, the second transmission spline shaft 2, and the third transmission spline shaft 3; the first drive spline shaft 1 includes a main body 101 and a spline body 102 integrally formed with the main body 101, the main body 101 serves as a sliding and limiting member, and an annular table 105 is provided at an end portion thereof, and the second drive spline shaft 2 is limited from completely disengaging by forming an overlapping structure with a stopper 202 of the second drive spline shaft 2, thereby ensuring safety of sliding. Similarly, the third transmission spline shaft 3 and the second transmission spline shaft 2 allow the locking member 4 to slide in the groove 303 by milling the groove 303 on the third transmission spline shaft 3, and form locking by the limit relationship between the locking member 4 and the edge of the groove 303, so that the third transmission spline shaft 3 can be prevented from completely separating when sliding, and the safety is further improved.
Preferably, in this embodiment, the end of the third transmission spline shaft 3 is fixedly connected with a second cross-shaped shaft type universal coupling 302, and the second cross-shaped shaft type universal coupling 302 is in transmission connection with a wheel to form a power output end.
The power input and the power output of the present embodiment are both in transmission connection in the form of a universal joint cross type coupling, which is one of the most commonly used couplings. By using the structural characteristics of the device, two shafts which are not on the same axis or have larger folding angles or larger axial movement can continuously rotate at the same angular speed, and the torque and the movement can be reliably transmitted.
In the technical scheme, the utility model provides a scalable rotatory transmission shaft structure has following beneficial effect:
the utility model discloses a transmission shaft structure forms into nested sliding connection structure each other with three transmission integral key shafts, relies on the meshing of spline to accomplish power transmission simultaneously, requires to realize transmission shaft length freely to adjust according to the wheel interval change of difference, novel structure, flexible effectual, power transmission are not influenced.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the present invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (4)
1. Scalable rotatory transmission shaft structure, its characterized in that includes:
the transmission spline shaft set is provided with a power input end in transmission connection with an external power output mechanism and a power output end in transmission connection with the wheels; and
the locking component (4) is arranged on the transmission spline shaft group and close to the power output end;
the transmission spline shaft group comprises three transmission spline shafts extending from a power input end to a power output end, namely a first transmission spline shaft (1), a second transmission spline shaft (2) and a third transmission spline shaft (3);
one end, far away from the second transmission spline shaft (2), of the first transmission spline shaft (1) is formed as the power input end, and one end, far away from the second transmission spline shaft (2), of the third transmission spline shaft (3) is formed as the power output end;
the third transmission spline shaft (3) is circumferentially pre-formed with a groove (303) extending in the length direction of the third transmission spline shaft (3);
the locking member (4) engages with the groove of the third drive spline shaft (3) to restrict the third drive spline shaft (3) from disengaging from the second drive spline shaft (2).
2. Telescopic rotating driveshaft structure according to claim 1, characterized in that the first drive spline shaft (1) comprises a main body (101) and a spline body (102) formed in the main body (101) remote from the power input;
the end part of one end, far away from the spline body (102), of the main body (101) is in transmission connection with a first cross-shaft type universal coupling (104) through a chain wheel (5), and the first cross-shaft type universal coupling (104) is in transmission connection with an external power output mechanism to form a power input end;
the main body (101) is of a cylindrical structure, a first sliding cavity (106) is formed in the main body, and a first spline groove (103) is formed in the surface of the spline body (102);
the joint of the main body (101) and the spline body (102) is provided with a ring platform (105);
the surface of the second transmission spline shaft (2) is provided with a second spline groove (201) matched with the first spline groove (103), and the second transmission spline shaft (2) is connected in the first transmission spline shaft (1) in a sliding way;
a baffle plate (202) is welded and fixed at the end part of the second transmission spline shaft (2) extending into the main body (101);
when the second transmission spline shaft (2) slides along the first transmission spline shaft (1), the separation of the second transmission spline shaft (2) from the first transmission spline shaft (1) is limited by the baffle (202) and the annular table (105);
the second transmission spline shaft (2) receives power transmitted by the first transmission spline shaft (1) through the meshing of the second spline grooves (201) and the first spline grooves (103) and rotates.
3. The telescopic rotary drive shaft structure according to claim 2, wherein the second drive spline shaft (2) is internally formed with a second sliding cavity (203);
the third transmission spline shaft (3) is connected in the second transmission spline shaft (2) in a sliding manner;
the surface of the third transmission spline shaft (3) is provided with a third spline groove (301);
the third spline grooves (301) and the second spline grooves (201) are matched to form meshing, and the third transmission spline shaft (3) receives power transmitted by the second transmission spline shaft (2) through the meshing of the third spline grooves (301) and the second spline grooves (201) and rotates;
a groove (303) is milled at the protruding position of any one third spline groove (301) of the third transmission spline shaft (3);
the end part of the second transmission spline shaft (2) is provided with the locking part (4) along the radial direction;
the locking component (4) is a fastening bolt;
the end of the locking part (4) is embedded in the groove (303).
4. A telescopic rotating transmission shaft structure according to claim 3, characterized in that the end of the third transmission spline shaft (3) is fixedly connected with a second cross-shaft universal coupling (302), the second cross-shaft universal coupling (302) being in transmission connection with a wheel to form the power take-off.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921852983.6U CN210769893U (en) | 2019-10-30 | 2019-10-30 | Telescopic rotary transmission shaft structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921852983.6U CN210769893U (en) | 2019-10-30 | 2019-10-30 | Telescopic rotary transmission shaft structure |
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| Publication Number | Publication Date |
|---|---|
| CN210769893U true CN210769893U (en) | 2020-06-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921852983.6U Active CN210769893U (en) | 2019-10-30 | 2019-10-30 | Telescopic rotary transmission shaft structure |
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| Country | Link |
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| CN (1) | CN210769893U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431912A (en) * | 2020-11-25 | 2021-03-02 | 合肥众甫工业技术有限公司 | Transmission mechanism based on telescopic variable distance |
-
2019
- 2019-10-30 CN CN201921852983.6U patent/CN210769893U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112431912A (en) * | 2020-11-25 | 2021-03-02 | 合肥众甫工业技术有限公司 | Transmission mechanism based on telescopic variable distance |
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