CN214465701U - Split type sun gear mechanism for overload protection - Google Patents
Split type sun gear mechanism for overload protection Download PDFInfo
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- CN214465701U CN214465701U CN202120259033.3U CN202120259033U CN214465701U CN 214465701 U CN214465701 U CN 214465701U CN 202120259033 U CN202120259033 U CN 202120259033U CN 214465701 U CN214465701 U CN 214465701U
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- sun gear
- gear
- overload protection
- pin
- spline
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Abstract
The utility model discloses a split type sun gear mechanism for overload protection, which comprises a sun gear spline section, wherein the sun gear spline section and the sun gear section are arranged in a pin hole through a cylindrical pin, the cylindrical pin is locked by a pressing device at the input end side, and a locking connecting pin shaft is arranged along the central axis; the utility model discloses a split type sun gear mechanism for overload protection, when the transmission output was suddenly overloaded, the biography of the gear part of sun gear and the hookup of spline part was turned round and is became invalid, and the gear part and the spline part of sun gear are equipped with radial positioning tang simultaneously, and make its axial compress tightly through axial stop device, and after cylindric lock biography turned round and became invalid, two parts were independently idle and can not break away from, and the gear pair only idles, has protected the driving medium in the system; the transmission pin is broken inside the sun gear after failure and is protected by the pressing device so as not to run out, and abnormality can be found in time after the gear idles so as to be processed, thereby reducing loss to the maximum extent.
Description
Technical Field
The utility model relates to a mechanical design, processing, assembly field specifically are a split type sun gear mechanism for overload protection.
Background
Under the traditional condition, when a tooth part or a spline is damaged after the sun gear is overloaded and fails, the gear teeth break into the shaft system, the planet gear, the bearing and the like can be damaged, even the gear teeth break into the box body, the whole gear box is seriously damaged, meanwhile, the time period for replacing the sun gear is long, and the needed materials and the needed processes are more. In some specific mechanisms, when an external sudden working condition occurs, the planetary transmission device can be ensured to be self-protected without overload or after instantaneous overload, and the damage to transmission parts is reduced. The split type sun gear mechanism with the overload protection function is specially designed.
In the mechanism, a gear part and a spline part of a sun gear are connected through a cylindrical pin to transmit torque in a set value, so that the safety coefficient of a torsion transmission pin is smaller than the safety coefficients of the gear part and the spline part of the sun gear, and the safety coefficient of the torsion transmission pin is smaller than the use safety coefficient of the planetary transmission system which is damaged by an external burst working condition. When the output end of the transmission device is suddenly overloaded, the connecting part of the torque transmission pin fails, and the gear pair idles, so that a transmission part in the system is protected.
The intensity of selling is less than the intensity of gear and spline in the design, can guarantee when the overload torque is too big, at first the damage be the round pin, the round pin damages the back simultaneously and can not fly out by closing device protection in the sun gear is inside, can not cause secondary damage to spline and gear, consequently longer accessory processing and change cycle after having avoidd spline and gear damage, and only need simple carry out quick replacement to the round pin can, so not only very big maintenance phase after having shortened equipment overload trouble, the higher operating rate of equipment has been guaranteed, equipment cost of maintenance has still been reduced by a wide margin simultaneously.
The gear part and the spline part are provided with positioning rabbets, and the gear part and the spline part are axially pressed through an axial limiting device, and when the cylindrical pin fails to transmit torque, the two parts independently idle and cannot be separated, so that a sun gear and other transmission parts are protected (in addition, two ends of a common sun gear are provided with axial limiting mechanisms such as spherical jacking blocks and the like);
for this purpose, a split sun gear for overload protection is proposed.
SUMMERY OF THE UTILITY MODEL
To prior art's not enough, the utility model provides a split type sun gear mechanism for overload protection, the utility model provides a following technical scheme: the sun gear spline section and the sun gear section are arranged in a pin hole through a cylindrical pin, the cylindrical pin is locked at the input end side by using a pressing device, and a locking connection pin shaft is arranged along the central axis.
Preferably, the sun gear section is mounted at the right end of the spline section of the sun gear.
Preferably, the locking connecting pin shaft is arranged right below the spline section of the sun wheel and the gear section of the sun wheel.
Preferably, the cylindrical pins are distributed along the circumference, one part of the whole pressing device presses the cylindrical pins, and the other part of the whole pressing device is arranged on the left side of the sun wheel.
Preferably, the cylindrical pin is positioned at the right end of the pressing device.
Compared with the prior art, the utility model discloses possess following beneficial effect: according to the split type sun wheel mechanism for overload protection, when the output end of a transmission device is suddenly overloaded, a torque transmission pin connected with a gear part and a spline part of a sun wheel fails, meanwhile, the gear part and the spline part of the sun wheel are provided with radial positioning rabbets and are axially compressed through an axial limiting device, and after the torque transmission of a cylindrical pin fails, the two parts independently idle and cannot be separated, a gear pair only idles, and a transmission part in a system is protected; the transmission pin is broken inside the sun gear after failure and is protected by the pressing device so as not to run out, and abnormality can be found in time after the gear idles so as to be processed, thereby reducing loss to the maximum extent.
Drawings
Fig. 1 is a schematic view of a split type sun wheel structure of the present invention;
in the figure: 1. a sun gear spline section; 2. a sun gear segment; 3. a pressing device; 4. a cylindrical pin; 5. and locking and connecting the pin shaft.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1, a split type sun gear mechanism for overload protection comprises a sun gear spline section 1, wherein the sun gear spline section 1 and a sun gear section 2 are arranged in a pin hole through a cylindrical pin 4, the cylindrical pin 4 is locked at the input end side by using a pressing device 3, and a locking connecting pin shaft 5 is arranged along the central axis.
The sun gear section 2 is arranged at the right end of the sun gear spline section 1.
And the locking connecting pin shaft 5 is arranged right below the spline section 1 of the sun wheel and the gear section 2 of the sun wheel.
The cylindrical pins 4 are distributed along the circumference, one part of the whole pressing device 3 presses the cylindrical pins 4, and the other part is arranged on the left side of the sun wheel.
The cylindrical pin 4 is located at the right end of the pressing device 3.
It should be noted that the sun gear spline section 1 and the sun gear section 2 are arranged in the pin hole through the cylindrical pin 4, the cylindrical pin 4 is locked by the pressing device 3 at the input end side, in order to prevent the two parts from being separated after the cylindrical pin 4 fails, the locking connecting pin shaft 5 is arranged along the central axis, and the pressing of the pressing device 3 is realized by the plug, the cover plate and the left round nut at the pin end surface;
according to the split type sun wheel mechanism for overload protection, when the output end of a transmission device is suddenly overloaded, a torque transmission pin connected with a gear part and a spline part of a sun wheel fails, meanwhile, the gear part and the spline part of the sun wheel are provided with radial positioning rabbets and are axially compressed through an axial limiting device, and after the torque transmission of a cylindrical pin fails, the two parts independently idle and cannot be separated, a gear pair only idles, and a transmission part in a system is protected; the transmission pin is broken inside the sun gear after failure and is protected by the pressing device so as not to run out, and abnormality can be found in time after the gear idles so as to be processed, thereby reducing loss to the maximum extent.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A split type sun gear mechanism for overload protection, includes sun gear spline section (1), its characterized in that: the sun gear spline section (1) and the sun gear section (2) are arranged in the pin hole through the cylindrical pin (4), the cylindrical pin (4) is locked by the pressing device (3) on the input end side, and the locking connecting pin shaft (5) is arranged along the central axis.
2. The split sun gear mechanism for overload protection according to claim 1, wherein: the sun gear section (2) is arranged at the right end of the sun gear spline section (1).
3. The split sun gear mechanism for overload protection according to claim 1, wherein: and the locking connecting pin shaft (5) is arranged right below the spline section (1) of the sun wheel and the gear section (2) of the sun wheel.
4. The split sun gear mechanism for overload protection according to claim 1, wherein: the cylindrical pins (4) are distributed along the circumference, one part of the whole pressing device (3) presses the cylindrical pins (4), and the other part of the whole pressing device is arranged on the left side of the sun gear.
5. The split sun gear mechanism for overload protection according to claim 1, wherein: the cylindrical pin (4) is positioned at the right end of the pressing device (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120259033.3U CN214465701U (en) | 2021-01-29 | 2021-01-29 | Split type sun gear mechanism for overload protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120259033.3U CN214465701U (en) | 2021-01-29 | 2021-01-29 | Split type sun gear mechanism for overload protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214465701U true CN214465701U (en) | 2021-10-22 |
Family
ID=78117016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120259033.3U Active CN214465701U (en) | 2021-01-29 | 2021-01-29 | Split type sun gear mechanism for overload protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214465701U (en) |
-
2021
- 2021-01-29 CN CN202120259033.3U patent/CN214465701U/en active Active
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