CN210240396U - Guide positioning device for spiral spring of planetary gearbox - Google Patents
Guide positioning device for spiral spring of planetary gearbox Download PDFInfo
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- CN210240396U CN210240396U CN201920887328.8U CN201920887328U CN210240396U CN 210240396 U CN210240396 U CN 210240396U CN 201920887328 U CN201920887328 U CN 201920887328U CN 210240396 U CN210240396 U CN 210240396U
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- supporting part
- spiral spring
- positioning device
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Abstract
The utility model discloses a planetary transmission coil spring guiding orientation device relates to gearbox technical field, and it keeps off the piston including reversing gear piston, annular isolation frame and one, and coil spring one end is passed annular isolation frame and is kept off the piston and offset with reversing gear, and the other end is supported by the guiding orientation unit that keeps off the piston, and the first inner step of the piston that reverses gear outwards extends and forms first supporting part, and first supporting part extends to the outward flange of the piston that reverses gear, and first supporting part sets up the first recess that inserts coil spring. The utility model provides a current planetary gearbox coil spring guiding orientation device's guiding orientation reliability poor, lead to the problem that coil spring easily bends.
Description
Technical Field
The utility model belongs to the technical field of the gearbox technique and specifically relates to a planetary gearbox coil spring guiding orientation device.
Background
The return of the planetary gearbox piston is realized by a return spring, and in order to avoid the return spring from generating play during working, a corresponding spring positioning structure is usually arranged in the gearbox. As shown in fig. 1, in a conventional planetary transmission using a plurality of circumferentially distributed coil springs 3 as return springs, a guiding and positioning device of the coil springs 3 includes an annular isolation frame 2 installed in a casing 1, a first gear piston 5, a spring pin 4, a reverse gear piston 7, the annular isolation frame 2 and a first gear cylinder 6 are coaxially installed, the first gear piston 5 is installed in the first gear cylinder 6, the right end of the annular isolation frame 2 is adjacent to the left end of the cylinder body, and the annular isolation frame 2 fixed in the casing 1 is provided with a plurality of guiding and positioning holes axially penetrating through the frame body corresponding to the coil springs 3; during installation, the spiral spring 3 penetrates through the guide positioning hole of the annular isolation frame 2 until one end of the spiral spring 3 abuts against the end face of the reverse gear piston 7, the spring pin shaft 4 penetrates through the other end of the spiral spring 3, and finally the first gear piston 5 and the first gear oil cylinder 6 are installed and compressed. The guide positioning device for the spiral spring of the planetary gearbox has the following defects: the guiding and positioning reliability is poor, as shown in fig. 2, no guiding and positioning hole is formed on the contact surface of the reverse gear piston 7 and the coil spring 3, only one middle guiding and positioning support is arranged on the annular isolation frame 2, and during initial installation, one end of the coil spring 3, which is abutted against the reverse gear piston 7, may be bent obliquely, as shown in fig. 3; when the piston reciprocates axially, two ends swing up and down, namely swing in the circumferential direction, and the impact force of the reverse gear piston 7 easily causes the helical spring 3 to be bent to cause failure and parts matched with the helical spring to be associated to fail in the long-term frequent gear shifting process of the gearbox.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a planetary gearbox coil spring guiding orientation device, this kind of device can solve current planetary gearbox coil spring guiding orientation device's guiding orientation reliability poor, leads to the problem that coil spring easily bends.
In order to solve the above problem, the utility model discloses a technical scheme is: the planetary gearbox helical spring guiding and positioning device comprises a reverse gear piston, an annular isolating frame and a first gear piston, wherein one end of the helical spring penetrates through the annular isolating frame to be abutted to the reverse gear piston, the other end of the helical spring is supported by a guiding and positioning unit of the first gear piston, a first inner end step of the reverse gear piston extends outwards to form a first supporting part, the first supporting part extends to the outer edge of the reverse gear piston, and a first groove inserted into the helical spring is formed in the first supporting part.
In the technical scheme of the above planetary transmission case helical spring guiding and positioning device, a more specific technical scheme may also be that: the guiding and positioning unit comprises a second supporting part formed by outwards extending a second inner end step of the first blocking piston, the second supporting part extends to the outer edge of the first blocking piston, and a second groove inserted into the other end of the spiral spring is formed in the second supporting part.
Further, the spiral spring is in clearance fit with the inner walls of the first groove and the second groove.
Furthermore, the outer side surface of the first supporting part is provided with a first opening communicated with the first groove, and the outer side surface of the second supporting part is provided with a second opening communicated with the second groove.
Further, the width of the first opening and the second opening is smaller than the diameter of the spiral spring.
Furthermore, the joint of the first groove inner wall and the first opening is provided with a chamfer, and the joint of the second groove inner wall and the second opening is provided with a chamfer.
Furthermore, one end of the guiding and positioning unit is abutted against the spring pin shaft of the first blocking piston, and the other end of the spring pin shaft is inserted into the spiral spring.
Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has: the reverse gear piston is provided with the supporting part with the groove, the spiral spring can be inserted into the groove, the spiral spring can be accurately positioned and effectively supported, the supporting points of the spiral spring are increased, the spiral spring cannot be shifted and bent due to bending of initial installation deviation or frequent reciprocating movement of the reverse gear piston, and the reliability and the stability of guiding and positioning of the spiral spring are improved; meanwhile, the risk point of failure of one part is reduced, the association failure of other parts caused by the failure of the spiral spring is avoided, and the safety is higher; the planetary gearbox is novel in structure, reasonable in arrangement, universal and suitable for various types and multi-tonnage planetary gearboxes.
Drawings
Fig. 1 is a schematic view of a guiding and positioning structure of a conventional coil spring.
Fig. 2 is a schematic view of the reverse piston structure of fig. 1.
Fig. 3 is a schematic view of the coil spring of fig. 1 swinging.
Fig. 4 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 5 is a perspective view of embodiment 1 of the present invention.
Fig. 6 is a schematic structural view of a reverse gear piston in embodiment 1 of the present invention.
Fig. 7 is a schematic structural view of embodiment 2 of the present invention.
Fig. 8 is a schematic structural view of a first-catch piston according to embodiment 2 of the present invention.
Detailed Description
The invention will be described in more detail with reference to the following embodiments:
example 1
The planetary gearbox helical spring guiding and positioning device shown in fig. 4 and 5 comprises a reverse gear piston 17, an annular isolation frame 12 and a first gear piston 15 which are installed in a box body 11, wherein a first gear oil cylinder 16, the annular isolation frame 12 and the reverse gear piston 17 are coaxially installed in the box body 11, the reverse gear piston 17 is installed at the reverse gear oil cylinder of the box body 11, the annular isolation frame 12 is fixed in the box body 11, the first gear piston 15 is installed in the first gear oil cylinder 16, the right end of the annular isolation frame 12 is adjacent to the left end of the first gear oil cylinder 16, and a plurality of helical springs 13 are circumferentially arranged in the box body 11; one end of a spiral spring 13 penetrates through the annular isolation frame 12 to abut against a reverse gear piston 17, the other end of the spiral spring is supported by a guiding and positioning unit, the guiding and positioning unit of the embodiment is a spring pin 14, one end of the spring pin 14 abuts against a first gear piston 15, the other end of the spring pin 14 is inserted into the spiral spring 13, and one end of the spiral spring 13 penetrates through the annular isolation frame 12 to abut against the reverse gear piston 17; as shown in fig. 6, a first inner end step 17-2 of the reverse gear piston 17 radially extends outwards to form a first supporting portion 17-1 corresponding to the coil spring 13 group, the first supporting portion 17-1 extends to the outer edge of the reverse gear piston 17, a vacant position is formed between the side walls of the adjacent first supporting portions 17-1, each first supporting portion 17-1 is provided with a first groove 17-11, each first groove 17-11 is a circular groove, the coil spring 13 is in clearance fit with the inner wall of the first groove 17-11, a first opening communicated with the first groove 17-11 is arranged on the outer side surface of the first supporting portion 17-1, the width of the first opening is smaller than the diameter of the coil spring 13, and a chamfer is arranged at the joint of the inner wall of the first groove 17-11 and the first opening. During installation, the spiral spring 13 penetrates through the guide positioning hole of the annular isolation frame 12 and penetrates into the first groove 17-11 of the reverse gear piston 17, the spring pin shaft 14 penetrates into the spiral spring 13, finally the first gear piston 15 and the first gear oil cylinder 16 are coaxially installed in the box body 11, the spiral spring 13 is guided and positioned through the guide positioning hole and the first groove 17-11, bending cannot be caused during initial installation, meanwhile, bending cannot be caused due to random movement in the circumferential direction, and stability and reliability of the spiral spring are improved.
Example 2
As shown in fig. 7 and 8, the guiding and positioning unit in this embodiment includes a second supporting portion 24-1 formed by extending outward a second inner end step 24-2 of the first catch piston 24, the second supporting portion 24-1 extends to an outer edge of the first catch piston 24, a vacant space is formed between side walls of adjacent second supporting portions 24-1, and each second supporting portion 24-1 is provided with a second groove 24-11. The second groove 24-11 is a circular groove, the spiral spring 23 is in clearance fit with the inner wall of the second groove 24-11, a second opening communicated with the second groove 24-11 is arranged on the outer side surface of the second supporting portion 24-1, the width of the second opening is smaller than the diameter of the spiral spring 23, and a chamfer is arranged at the joint of the inner wall of the second groove 24-11 and the second opening. During installation, the reverse gear piston 26 is installed at the reverse gear oil cylinder of the box body 21, the annular isolation frame 22 is coaxially installed in the box body 21, the spiral spring 23 penetrates through the guiding positioning hole of the annular isolation frame 22 and penetrates into the first groove of the reverse gear piston 26, the first gear piston 24 and the first gear oil cylinder 25 are coaxially installed in the box body 21, the second groove 24-11 of the first gear piston 24 is aligned with the spiral spring 23, and the spiral spring 23 is guided and positioned through the first groove, the guiding positioning hole and the second groove 24-11, so that the stability and the reliability of the reverse gear piston are improved. Other features are the same as those of embodiment 1.
Claims (7)
1. The utility model provides a planetary transmission box coil spring guiding orientation device, includes reverse gear piston, annular isolation frame and a fender piston, and coil spring one end is passed annular isolation frame with reverse gear piston offsets, and the other end by the guiding orientation unit who keeps off the piston supports its characterized in that: the first inner end step of the reverse gear piston extends outwards to form a first supporting portion, the first supporting portion extends to the outer edge of the reverse gear piston, and a first groove inserted into the spiral spring is formed in the first supporting portion.
2. The planetary transmission helical spring guide positioning device of claim 1, wherein: the guiding and positioning unit comprises a second supporting part formed by outwards extending a second inner end step of the first blocking piston, the second supporting part extends to the outer edge of the first blocking piston, and a second groove inserted into the other end of the spiral spring is formed in the second supporting part.
3. The planetary transmission helical spring guide positioning device of claim 2, wherein: the spiral spring is in clearance fit with the inner walls of the first groove and the second groove.
4. A planetary transmission helical spring guide positioning device as in claim 3 wherein: the outer side surface of the first supporting part is provided with a first opening communicated with the first groove, and the outer side surface of the second supporting part is provided with a second opening communicated with the second groove.
5. The planetary transmission helical spring guide positioning device of claim 4, wherein: the width of the first opening and the second opening is smaller than the diameter of the spiral spring.
6. The planetary transmission helical spring guide positioning device of claim 5, wherein: the first groove inner wall and the first opening joint are provided with chamfers, and the second groove inner wall and the second opening joint are provided with chamfers.
7. The planetary transmission helical spring guide positioning device of claim 1, wherein: the guiding and positioning unit is a spring pin shaft with one end abutting against the first blocking piston, and the other end of the spring pin shaft is inserted into the spiral spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920887328.8U CN210240396U (en) | 2019-06-13 | 2019-06-13 | Guide positioning device for spiral spring of planetary gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920887328.8U CN210240396U (en) | 2019-06-13 | 2019-06-13 | Guide positioning device for spiral spring of planetary gearbox |
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| Publication Number | Publication Date |
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| CN210240396U true CN210240396U (en) | 2020-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920887328.8U Active CN210240396U (en) | 2019-06-13 | 2019-06-13 | Guide positioning device for spiral spring of planetary gearbox |
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| CN (1) | CN210240396U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090739A (en) * | 2021-04-27 | 2021-07-09 | 柳工柳州传动件有限公司 | Planetary gearbox and engineering machinery |
-
2019
- 2019-06-13 CN CN201920887328.8U patent/CN210240396U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113090739A (en) * | 2021-04-27 | 2021-07-09 | 柳工柳州传动件有限公司 | Planetary gearbox and engineering machinery |
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