CN215861565U - Gearbox and agricultural machine - Google Patents
Gearbox and agricultural machine Download PDFInfo
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- CN215861565U CN215861565U CN202120853611.6U CN202120853611U CN215861565U CN 215861565 U CN215861565 U CN 215861565U CN 202120853611 U CN202120853611 U CN 202120853611U CN 215861565 U CN215861565 U CN 215861565U
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Abstract
The utility model provides a gearbox for agricultural machinery, which comprises a box body, a first shaft and a second shaft, wherein the first shaft is arranged in the box body, the second shaft is arranged in parallel with the first shaft, and the first shaft is sequentially provided with low-speed transmission teeth, fourth-gear fixed teeth, third-gear fixed teeth, second-gear fixed teeth and first-gear fixed teeth; the second shaft is provided with a fourth gear duplex tooth, a third gear duplex tooth, a second gear duplex tooth and a first gear duplex tooth which can be respectively meshed with the fourth gear fixed tooth, the third gear fixed tooth, the second gear fixed tooth and the first gear fixed tooth; the end parts of the first shaft and the second shaft are also provided with PTO output parts used for providing power for additional machines. The gearbox of this structure, during operation, the gearbox provides power for agricultural machine's walking except, still provides changeable power for additional machines through PTO output, compares with the gearbox of current structure, and its function is more complete and complete, and the structure is simple compacter to and the little advantage of transmission loss. In addition, the utility model also provides agricultural machinery.
Description
Technical Field
The utility model relates to the field of agricultural machinery, in particular to a gearbox and agricultural machinery.
Background
The speed variator consists of speed variator, speed-varying transmission mechanism and operating mechanism, and is also called speed variator, which can change the speed and torque of engine and can change the transmission ratio between output shaft and input shaft.
In the field of passenger vehicles, the gear box is updated and replaced more quickly, the technology is more and more advanced, but in the field of agricultural machinery, due to factors in various aspects such as cost and the like, the gear box widely used on the agricultural machinery at present generally has a series of problems of large power loss, complex structure, single function, incapability of providing power for additional machines and tools and the like.
In summary, how to provide a gearbox which has small power loss, simple and compact structure and complete functions and can independently provide power for additional machines and tools, and an agricultural machine comprising the gearbox, become technical problems which need to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the utility model is as follows: the gearbox has the advantages of small power loss, simple and compact structure, complete functions and capability of independently providing power for the additional machine tool, and the agricultural machine comprising the gearbox.
The solution of the utility model is realized by the following steps: the utility model provides a gearbox for agricultural machinery, which comprises a box body, a first shaft and a second shaft, wherein the first shaft is arranged in the box body, the second shaft is arranged in parallel with the first shaft, and the first shaft is sequentially provided with low-speed transmission teeth, fourth-gear fixed teeth, third-gear fixed teeth, second-gear fixed teeth and first-gear fixed teeth; the second shaft is provided with a fourth gear duplex tooth, a third gear duplex tooth, a second gear duplex tooth and a first gear duplex tooth which can be respectively meshed with the fourth gear fixed tooth, the third gear fixed tooth, the second gear fixed tooth and the first gear fixed tooth; the end parts of the first shaft and the second shaft are also provided with PTO output parts used for providing power for additional machines. The gearbox of this structure, during operation, the gearbox provides power for agricultural machine's walking except, still provides changeable power for additional machines through PTO output, compares with the gearbox of current structure, and its function is more complete and complete, and the structure is simple more compact, and still has the transmission loss and little, advantage that the transmission efficiency is high.
In addition to the above, another technical solution of the present invention is that the PTO output portion includes an input double tooth disposed on the one shaft, and the input double tooth is disposed at an end of the first-gear fixed tooth away from the second-gear double tooth.
In addition to the above, another technical solution of the present invention is that the PTO output portion further includes an output shaft fixedly disposed on the casing, the output shaft is provided with a low-speed driven tooth and a high-speed driven tooth which are always engaged with the input double tooth, and an output acting tooth is further disposed between the low-speed driven tooth and the high-speed driven tooth.
On the basis, the output action teeth are also sleeved with output tooth engaging sleeves, and the output tooth engaging sleeves can slide left and right on the output action teeth.
On the basis, the other technical scheme of the utility model is that a shifting fork groove is also formed in the output tooth joint sleeve, and an output shifting fork for driving the output tooth joint sleeve to move is arranged in the shifting fork groove.
On the basis, the output shaft is further sleeved with a driven gear bushing, and the low-speed driven gear and the high-speed driven gear are respectively sleeved on the driven gear bushing.
On the basis, the driven gear bushing comprises a first driven gear bushing and a second driven gear bushing which are arranged oppositely, one end, close to the second driven gear bushing, of the first driven gear bushing abuts against one side of the output action tooth, and one end, close to the first driven gear bushing, of the second driven gear bushing abuts against the other side of the output action tooth.
On the basis, the output action teeth are fixedly connected with the output shaft, and when the output action teeth rotate, the output shaft is driven to rotate, so that power output is realized.
On the basis, the two shafts are respectively provided with low-speed fixed teeth and high-speed and low-speed sliding teeth; the gearbox further comprises a rear drive shaft, the rear drive shaft is provided with tail end transmission teeth which can be used for being meshed with the high-low speed sliding teeth, and one end of each tail end transmission tooth is further provided with a driving bevel gear and a separating and combining tooth.
In another aspect, the utility model further provides an agricultural machine, which includes a gearbox, and the gearbox is the gearbox described above.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate an embodiment of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
FIG. 1 is a schematic cross-sectional view of a transmission of the present invention.
The corresponding relation of the reference signs is as follows:
1 clutch shaft 2 and connecting sleeve 3 shaft
4 low-speed transmission gear 5 four-gear fixed gear 51 four-gear duplex gear
6 three-gear fixed tooth 61, three-gear double-gear and 7-gear fixed tooth
71 second-gear duplex gear 8 first-gear fixed gear 81 first-gear duplex gear
9 output flange 10 rear drive shaft
12 second-gear engaging sleeve 121 second-gear action tooth 13 engaging and disengaging tooth
14 three-gear and four-gear engaging sleeve 141 three-gear and four-gear acting teeth
15 high-speed fixed teeth of end transmission teeth 17 of driving bevel gear 16
18 high-low speed sliding teeth 19 low speed fixed teeth 20 biaxial
21 first joystick 22 second joystick 23PTO output
P1 input double-tooth P2 low-speed driven tooth P3 output shifting fork
P4 output tooth engaging sleeve P5 output action tooth P6 high speed driven tooth
P7 first driven gear bush P8 output shaft P9 second driven gear bush
Detailed Description
The present invention will now be described in detail with reference to the drawings, which are given by way of illustration and explanation only and should not be construed to limit the scope of the present invention in any way. Furthermore, features from embodiments in this document and from different embodiments may be combined accordingly by a person skilled in the art from the description in this document.
The embodiment of the utility model is as follows, please refer to the gearbox shown in fig. 1, which is used for agricultural machinery and specifically comprises a box body, a first shaft 3 arranged in the box body, and a second shaft 20 arranged in parallel with the first shaft 3, wherein a low-speed transmission gear 4, a four-gear fixed gear 5, a three-gear fixed gear 6, a two-gear fixed gear 7 and a first-gear fixed gear 8 are sequentially arranged on the first shaft 3 from left to right; a fourth-gear duplex tooth 51, a third-gear duplex tooth 61, a second-gear duplex tooth 71 and a first-gear duplex tooth 81 which can be respectively meshed with the fourth-gear fixed tooth 5, the third-gear fixed tooth 6, the second-gear fixed tooth 7 and the first-gear fixed tooth 8 are sequentially arranged on the second shaft 20 from left to right; the ends of the primary shaft 3 and the secondary shaft 20, in particular the right end as shown in the figure, are also provided with a PTO output 23 for powering an additional implement, in particular a rotary tiller or the like, via which PTO (power take off) output power is provided. The gearbox of this structure, during operation, the gearbox provides power for agricultural machine's walking except, still provides changeable power for additional machines through PTO output 23, compares with the gearbox of current structure, and its function is more complete and complete, and the structure is simple more compact, and still has the transmission loss and little, advantage that the transmission efficiency is high.
In addition to the above-described embodiment, in another embodiment of the present invention, as shown in fig. 1, the PTO output portion 23 includes an input double tooth P1 provided on the shaft 3, and an input double tooth P1 is provided at an end of the first-gear fixed tooth 8 facing away from the second-gear double tooth 71, that is, a right end in the drawing.
In addition to the above embodiments, in another embodiment of the present invention, as shown in fig. 1, PTO output portion 23 further includes an output shaft P8 fixedly disposed on the casing, specifically, fixedly disposed at an end portion of the casing, output shaft P8 is provided with a low-speed driven tooth P2 and a high-speed driven tooth P6 which are always meshed with input double tooth P1, and an output acting tooth P5 is further disposed between low-speed driven tooth P2 and high-speed driven tooth P6.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1, an output dog engaging sleeve P4 is further sleeved on the output action dog P5, specifically on the periphery of the output action dog P5, and the output dog engaging sleeve P4 can slide left and right on the output action dog P5.
In another embodiment of the present invention, as shown in fig. 1, a fork slot is further disposed on the output tooth engaging sleeve P4, and an output fork P3 for driving the output tooth engaging sleeve P4 to move left and right is disposed in the fork slot.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1, a driven gear bushing is further sleeved on the output shaft P8, the low-speed driven gear P2 and the high-speed driven gear P6 are respectively sleeved on the driven gear bushing, and when the low-speed driven gear P2 and the high-speed driven gear P6 rotate under the action of the input double-link gear P1, the low-speed driven gear P2 and the high-speed driven gear P6 rotate in the driven gear bushing.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1, the driven-gear bushing specifically includes a first driven-gear bushing P7 and a second driven-gear bushing P9 which are disposed oppositely, the first driven-gear bushing P7 is close to one end of the second driven-gear bushing P9, i.e., the left end shown in the figure abuts against one side of the output-acting tooth P5, i.e., the right side of the output-acting tooth P5, and the second driven-gear bushing P9 is close to one end of the first driven-gear bushing P7, i.e., the right end shown in the figure abuts against the other side of the output-acting tooth P5, i.e., the right side shown in the figure.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1, the output acting tooth P5 is fixedly connected to the output shaft P8, specifically, may be integrally designed with the output shaft P8, or may be fixed to the output shaft P8 through a spline or other connection manner, and when the output acting tooth P5 rotates, the output shaft P8 is driven to rotate, so as to implement power output.
On the basis of the above embodiment, in another embodiment of the present invention, as shown in fig. 1, the two shafts 20 are further respectively provided with a low-speed fixed tooth 19 and a high-speed low-speed sliding tooth 18; the gearbox further comprises a rear drive shaft 10, the rear drive shaft 10 is provided with tail end transmission teeth 16 which can be used for being meshed with the high-speed and low-speed sliding teeth 18, and one end of each tail end transmission tooth 16 is further provided with a driving bevel gear 15 and a separating and combining tooth 13.
In addition, the transmission further includes an output flange 9, a second gear engaging sleeve 12, a second gear engaging tooth 121, a third and fourth gear engaging tooth 141, a first operating lever 21, a second operating lever 22, and the like.
The transmission principle of the gearbox part is as follows:
the engine is matched with the clutch shaft 1, torque is transmitted to a shaft 3 through the connecting sleeve 2, the duplex teeth are matched with the shaft 3 in a clearance fit mode, and no torque is transmitted. The fourth gear, the third gear, the second gear and the first gear are respectively fixed on a shaft 3 and always receive torque. The four-gear duplex teeth and the three-gear duplex teeth are assembled on the second shaft 20 respectively, and are in clearance fit with the second shaft 20, and the four-gear, the three-gear, the two-gear and the one-gear duplex teeth are engaged with the four-gear duplex teeth, the three-gear duplex teeth, the two-gear duplex teeth 1 and the one-gear duplex teeth respectively all the time. The first-gear second-gear fixed teeth 7 and the third-gear fourth-gear fixed teeth 5 are matched with the second shaft 20 through splines, and the first-gear second-gear sliding teeth and the third-gear fourth-gear sliding teeth are respectively and constantly meshed with the first-gear second-gear fixed teeth 7 and the third-gear fourth-gear fixed teeth 5. When the third and fourth gear sleeve 14 slides to the left, the fourth gear duplex teeth transmit torque to the third and fourth gear sleeve 14 and, at the same time, to the third and fourth gear fixed sleeve, thereby transmitting torque to the second shaft 20. At this time, the high-speed fixed gear 17 is connected with the two shafts 20 through splines to obtain torque. When the high-low speed sliding teeth 18 slide to the right, the torque of the high-speed fixed teeth 17 is received and transmitted to the end gear 16. When the high-low speed sliding teeth 18 slide to the right, the torque is transmitted to the double teeth through the high-speed fixed teeth 17, transmitted to the low-speed fixed teeth 19 through the double teeth, and transmitted to the end transmission teeth 16 through the high-low speed sliding teeth 18.
The operating principle of the PTO output 23 is as follows:
when the joint sleeve slides on the output action tooth P5 to the left and the output action tooth P5 and the low-speed driven tooth P2 are engaged at the same time, the force of the input double-coupling tooth P1 is transmitted to the output shaft P8, and at the moment, low-speed transmission is realized. When the joint sleeve slides right on the output action tooth P5 and the output action tooth P5 and the high-speed driven tooth P6 are simultaneously meshed, the force of the input double-coupling tooth P1 is transmitted to the output shaft P8, and at the moment, high-speed transmission is realized.
The gearbox with the structure can provide power for walking of agricultural machinery and can also provide switchable power for additional machines and tools through the PTO output part 23 during operation as described above.
In another aspect, the utility model further provides an agricultural machine comprising a gearbox, which is specifically the gearbox as described above.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A gearbox is used for agricultural machinery and is characterized by comprising a box body, a first shaft and a second shaft, wherein the first shaft is arranged in the box body, the second shaft is arranged in parallel with the first shaft, and a low-speed transmission gear, a fourth-gear fixed gear, a third-gear fixed gear, a second-gear fixed gear and a first-gear fixed gear are sequentially arranged on the first shaft;
the second shaft is provided with a fourth gear duplex tooth, a third gear duplex tooth, a second gear duplex tooth and a first gear duplex tooth which can be respectively meshed with the fourth gear fixed tooth, the third gear fixed tooth, the second gear fixed tooth and the first gear fixed tooth;
the end parts of the first shaft and the second shaft are also provided with PTO output parts used for providing power for additional machines.
2. The transmission of claim 1, wherein the PTO output includes an input double tooth disposed on the shaft, the input double tooth being disposed at an end of the first gear fixed tooth facing away from the second gear double tooth.
3. A transmission according to claim 2 wherein the PTO output further comprises an output shaft fixedly mounted on the housing, the output shaft having low speed and high speed driven teeth which are in constant mesh with the input dog teeth, and output engagement teeth provided between the low speed and high speed driven teeth.
4. A transmission according to claim 3 wherein the output reaction dog is further provided with an output dog clutch sleeve, the output dog clutch sleeve being slidable left and right on the output reaction dog.
5. The transmission of claim 4, wherein the output gear sleeve further includes a fork slot, and the fork slot includes an output fork for moving the output gear sleeve.
6. The gearbox of claim 5, wherein the output shaft is further sleeved with a driven gear bushing, and the low-speed driven gear and the high-speed driven gear are respectively sleeved on the driven gear bushing.
7. The transmission of claim 6, wherein the driven gear bushing includes a first driven gear bushing and a second driven gear bushing that are disposed opposite to each other, wherein an end of the first driven gear bushing near the second driven gear bushing abuts against one side of the output engagement tooth, and an end of the second driven gear bushing near the first driven gear bushing abuts against the other side of the output engagement tooth.
8. The gearbox of claim 7, wherein the output engagement teeth are fixedly coupled to the output shaft, and when the output engagement teeth rotate, the output shaft is driven to rotate, thereby achieving power output.
9. The gearbox according to claim 1, characterized in that the two shafts are respectively provided with low-speed fixed teeth and high-speed sliding teeth;
the gearbox further comprises a rear drive shaft, the rear drive shaft is provided with tail end transmission teeth which can be used for being meshed with the high-low speed sliding teeth, and one end of each tail end transmission tooth is further provided with a driving bevel gear and a separating and combining tooth.
10. An agricultural machine comprising a gearbox, wherein the gearbox is according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120853611.6U CN215861565U (en) | 2021-04-23 | 2021-04-23 | Gearbox and agricultural machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120853611.6U CN215861565U (en) | 2021-04-23 | 2021-04-23 | Gearbox and agricultural machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215861565U true CN215861565U (en) | 2022-02-18 |
Family
ID=80315427
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120853611.6U Active CN215861565U (en) | 2021-04-23 | 2021-04-23 | Gearbox and agricultural machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215861565U (en) |
-
2021
- 2021-04-23 CN CN202120853611.6U patent/CN215861565U/en active Active
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