CN210949781U - Variable speed transmission device for tractor - Google Patents
Variable speed transmission device for tractor Download PDFInfo
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- CN210949781U CN210949781U CN201921234770.7U CN201921234770U CN210949781U CN 210949781 U CN210949781 U CN 210949781U CN 201921234770 U CN201921234770 U CN 201921234770U CN 210949781 U CN210949781 U CN 210949781U
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Abstract
A variable speed drive for a tractor comprising: a main transmission, an auxiliary transmission and a transfer case idler; the main speed variator and the auxiliary speed variator are arranged in sequence from front to back, wherein one end of the main speed variator is connected with a front transmission case of the tractor, one end of the auxiliary speed variator is connected with a rear axle of the tractor, and an idler wheel of the transfer case is connected with the transfer case of the tractor. 16 gears can be realized through the combination of the main transmission device and the auxiliary transmission device; the main speed change device adopts a synchronizer to shift without stopping, so that the shifting impact and the shifting force are small, and the working efficiency is high; the auxiliary transmission driven shaft and the bevel pinion in the auxiliary transmission device are integrated, and the low-gear driven gear and the high-low gear meshing sleeve cantilever are arranged at the front end of the auxiliary transmission driven shaft, so that the structure is compact, and the axial size of the transmission device is effectively shortened. The driving gear of the transfer case is meshed with the idler on the idler shaft of the transfer case, so that the occupied space is small, and the speed ratio is convenient to adjust.
Description
Technical Field
The utility model belongs to the tractor field relates to a variable speed transmission for tractor.
Background
At present, various high and medium power tractors produced at home and abroad require various configurations of a transmission system in order to meet the requirements of different operations in different markets, and the configurations of synchronous reversing, power shifting, crawling gears and the like have requirements. It is difficult to provide a universal drive train in the prior art, and only different drive trains can be developed to meet these functions. Therefore, in order to effectively reduce the manufacturing cost, it is urgently needed to develop a variable speed transmission device for a general tractor, which is configured with front boxes with different functional modules to form gearboxes with different functions so as to meet the market demands.
The patent application of the utility model, tractor gearbox, published by the State intellectual Property office 2016, 5, month and 18, has the patent number ZL201410175340.8, and is closer to the content of the patent application. A tractor gearbox in this patent, including box, main controlling device, main speed change mechanism and vice speed change mechanism, main speed change mechanism includes as power input's primary shaft, the jackshaft that is on a parallel with the primary shaft setting, with secondary shaft and the reverse gear axle that the primary shaft coaxial axis set up, vice speed change mechanism is including can realizing carrying out the planetary gear who keeps off, low gear or crawl the fender regulation to main speed change mechanism output speed, planetary gear include planetary gear spline circle, crawl the fender ring gear and be used for connecting the joint tooth cover of output shaft, the joint tooth cover realizes keeping off, low gear or crawl the fender rotational speed transform through gear shaft, planetary gear spline circle and the crawl fender ring gear of position removal meshing transmission secondary shaft respectively. This gearbox contains a planetary gear arrangement with high, low or creep gear adjustment, differing from the present patent application in the number and function of the gears.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a compact rational in infrastructure can be with the integrative variable speed transmission of main variable speed, auxiliary transmission, transfer case idler shaft integration simultaneously.
The technical scheme of the utility model is that: a variable speed drive for a tractor comprising: a main transmission, an auxiliary transmission and a transfer case idler; the main transmission device and the auxiliary transmission device are sequentially arranged from front to back, wherein one end of the main transmission device is connected with a front transmission case of a tractor, one end of the auxiliary transmission device is connected with a rear axle of the tractor, an idler pulley of the transfer case is connected with the transfer case of the tractor, a main transmission driving shaft and a main transmission driven shaft are arranged in the main transmission device, an auxiliary transmission driving shaft and an auxiliary transmission driven shaft are arranged in the auxiliary transmission device, an idler shaft of the transfer case is arranged in the auxiliary transmission device, and a power output shaft penetrates through the main transmission driving shaft and the auxiliary transmission driving.
The main gear shifting device comprises: a main variable speed driving shaft and a main variable speed driven shaft; the two shafts are arranged up and down in a plane: a first gear driving gear, a second gear driving gear, a third gear driving gear and a fourth gear driving gear are fixedly arranged on the main speed change driving shaft; two shifting synchronizer assemblies are fixedly arranged on the main variable speed driven shaft, and an I-gear driven gear, an II-gear driven gear, an III-gear driven gear and an IV-gear driven gear are arranged on the idle sleeve.
And the I-gear driving gear 1, the II-gear driving gear, the III-gear driving gear and the IV-gear driving gear on the main speed change driving shaft are meshed with the I-gear driven gear, the II-gear driven gear, the III-gear driven gear and the IV-gear driven gear on the main speed change driven shaft respectively.
The engaging sleeves of the two shifting synchronizer assemblies on the main speed changing driven shaft can slide left and right along the axial direction to selectively engage with the connecting teeth on the adjacent gears.
The subtransmission device includes: the auxiliary variable-speed driving shaft and the auxiliary variable-speed driven shaft are arranged up and down in a plane; a normally meshed driven gear, a low-gear driving gear, a middle-first gear driving gear and a middle-second gear driving gear are fixedly arranged on the auxiliary speed change driving shaft; the auxiliary variable-speed driven shaft is fixedly provided with a middle-gear driven gear and a middle-gear driven gear, the low-gear driven gear is arranged in a free sleeve, the auxiliary variable-speed driven shaft and the bevel pinion are integrated, and the normally-meshed driving gear and the main variable-speed driven shaft are integrated.
A normally meshed driving gear, a low gear driving gear, a middle first gear driving gear and a middle second gear driving gear on the auxiliary speed change driving shaft are meshed with a normally meshed driven gear, a low gear driven gear, a middle first gear driven gear and a middle second gear driven gear respectively; and a middle gear meshing sleeve is mounted on the auxiliary transmission driving shaft and can slide left and right along the axial direction to selectively engage with the connecting teeth on the adjacent gear.
And the high-low gear meshing sleeve is mounted on the auxiliary transmission driven shaft and can slide left and right along the axial direction to selectively engage with the connecting teeth on the adjacent gear.
A transfer case driving gear is installed between a first-gear driven gear and a second-gear driven gear on the auxiliary variable speed driven shaft, two conical bearings are arranged at two ends of the first-gear driven gear and the second-gear driven gear on the auxiliary variable speed driven shaft, and a low-gear driven gear and a high-low gear meshing sleeve cantilever are arranged at the front end of the auxiliary variable speed driven shaft.
The transfer case idler shaft is arranged below the auxiliary transmission driven shaft, a transfer case idler is arranged on the transfer case idler shaft, and the transfer case driving gear is meshed with the transfer case idler.
The power output shaft is sleeved in the main speed change driving shaft and the auxiliary speed change driving shaft.
The utility model adopts the above technical scheme can reach following positive effect after: the speed change transmission device for the tractor adopts the arrangement mode, has compact structure and can transmit power to the rear axle, the front axle and the power output shaft of the tractor. 16 gears can be realized through the combination of the main transmission device and the auxiliary transmission device; the main speed change device adopts a synchronizer to shift gears, so that the gears can be shifted without stopping, the gear shifting impact and the gear shifting force are small, and the working efficiency is high; the auxiliary transmission driven shaft and the bevel pinion in the auxiliary transmission device are integrated, and the low-gear driven gear and the high-low gear meshing sleeve cantilever are arranged at the front end of the auxiliary transmission driven shaft, so that the structure is compact, and the axial size of the transmission device is effectively shortened. The transfer case driving gear is arranged between the first-gear driven gear and the second-gear driven gear and meshed with an idler wheel arranged on a transfer case idler shaft below the auxiliary transmission driven shaft, so that the occupied space is small, and the speed ratio is convenient to adjust.
Drawings
Fig. 1 is a schematic structural view of a variable speed transmission device for a tractor according to the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples. As shown in fig. 1, a variable speed drive for a tractor includes: a main transmission B1, a range transmission B2, a transfer case idler 18; a main speed change device B1 and an auxiliary speed change device B2 are sequentially arranged, wherein one end of the main speed change device B1 is connected with front transmission cases of different functional modules of a tractor, one end of the auxiliary speed change device B2 is connected with a rear axle of the tractor, an idle gear 18 of a transfer case is connected with a transfer case of the tractor, a main speed change driving shaft S1 and a main speed change driven shaft S2 are arranged in the main speed change device B1, an auxiliary speed change driving shaft S3 and an auxiliary speed change driven shaft S4 are arranged in an auxiliary speed change device B2, and a transfer case idle shaft S5 and a power output shaft S6 penetrate through the main speed change driving shaft S1 and the auxiliary speed change driving shaft.
The main transmission B1 includes: a main transmission driving shaft S1 and a main transmission driven shaft S2; the two shafts are arranged up and down in a plane: the main speed change driving shaft S1 is fixedly provided with a first-gear driving gear 1, a second-gear driving gear 3, a third-gear driving gear 5 and a fourth-gear driving gear 7; and S2 on the driving and driven shaft is fixedly provided with two shifting synchronizer assemblies 19, and an idle sleeve is provided with a first-gear driven gear 2, a second-gear driven gear 4, a third-gear driven gear 6 and a fourth-gear driven gear 8.
And the I-gear driving gear 1, the II-gear driving gear 3, the III-gear driving gear 5 and the IV-gear driving gear 7 on the main transmission driving shaft S1 are meshed with the I-gear driven gear 2, the II-gear driven gear 4, the III-gear driven gear 6 and the IV-gear driven gear 8 on the main transmission driven shaft S2 respectively.
The sleeves of the two shift synchronizer assemblies 19 on the main transmission driven shaft S2 can slide left and right in the axial direction to selectively engage with the connecting teeth on the adjacent gears.
The subtransmission device B2 includes: the auxiliary speed change driving shaft S3 and the auxiliary speed change driven shaft S4 are arranged up and down in a plane; a normally meshed driven gear 10, a low-gear driving gear 11, a hollow mounted first-gear driving gear 13 and a second-gear driving gear 15 are fixedly mounted on the auxiliary speed change driving shaft S3; the auxiliary variable-speed driven shaft S4 is fixedly provided with a middle-first-gear driven gear 14 and a middle-2-gear driven gear 16, a low-gear driven gear 12 is arranged in an empty sleeve mode, the auxiliary variable-speed driven shaft S4 and the bevel pinion 20 are integrated, and the normally meshed driving gear 9 and the main variable-speed driven shaft S3 are integrated.
The normally meshed driving gear 9, the low gear driving gear 11, the first middle gear driving gear 13 and the second middle gear driving gear 15 on the auxiliary transmission driving shaft S3 are meshed with the normally meshed driven gear 10, the low gear driven gear 12, the first middle gear driven gear 14 and the second middle gear driven gear 16 respectively; the range shaft S3 has a middle gear sleeve 21 mounted thereon, and the middle gear sleeve 21 is axially slidable left and right to selectively engage with the connecting teeth on the adjacent gear.
The sub-transmission driven shaft S4 is provided with a high-low gear engaging sleeve 22, and the high-low gear engaging sleeve 22 can slide left and right in the axial direction to selectively engage with the connecting teeth on the adjacent gear.
A transfer case driving gear 17 is mounted between the first-gear driven gear 14 and the second-gear driven gear 16 on the auxiliary transmission driven shaft S4, two conical bearings are arranged at two ends of the first-gear driven gear 14 and the second-gear driven gear 16 on the auxiliary transmission driven shaft S4, and the low-gear driven gear 12 and the high-low gear meshing sleeve 22 are arranged at the front end of the auxiliary transmission driven shaft S4 in a cantilever mode.
The transfer case idler shaft S5 is arranged below the auxiliary transmission driven shaft S4, a transfer case idler 18 is mounted on the transfer case idler shaft S5, and the transfer case driving gear 17 is meshed with the transfer case idler 18.
The power output shaft S6 is sleeved in the main gear drive shaft S1 and the auxiliary gear drive shaft S3.
The power of the tractor is divided into two paths to be transmitted through the speed changing device of the tractor, and the paths are as follows:
the first path is transmitted from the power output shaft S6 to the power output device to drive the power output shaft of the tractor.
The second path is transmitted from the power source to the main transmission B1 through the main transmission axle shaft S1.
The main transmission B1 can realize four different gears according to the state of two shifting synchronizer assemblies 19 on the main transmission driven shaft S2, and the power transmission path of each gear is as follows:
i, blocking: the shift synchronizer assembly 19 slides rightward to engage with the connecting teeth of the I-speed driven gear 2, and the other shift synchronizer assembly 19 on the main transmission driven shaft S2 does not engage with the connecting teeth of the adjacent gear. Power is provided by a main gear driving shaft S1 → a I gear driving gear 1 → a I gear driven gear 2 → a shift synchronizer assembly 19 → a main gear driven shaft S2.
II, gear shifting: the shift synchronizer assembly 19 slides leftwardly to engage with the connecting teeth on the second-speed driven gear 4, and the other shift synchronizer assembly 19 on the main shift driven shaft S2 does not engage with the connecting teeth of the adjacent gear. Power is provided by the main shift driving shaft S1 → the II gear driving gear 3 → the II gear driven gear 4 → the shift synchronizer assembly 19 → the main shift driven shaft S2.
And III, blocking: the shift synchronizer assembly 19 slides rightward to engage with the connecting teeth on the driven gear 6 of the third gear, and the other shift synchronizer assembly 19 on the main shift driven shaft S2 does not engage with the connecting teeth of the adjacent gear. Power is provided by the main shift driving shaft S1 → the III gear driving gear 5 → the III gear driven gear 6 → the shift synchronizer assembly 19 → the main shift driven shaft S2.
And IV, gear shifting: the shift synchronizer assembly 19 slides leftwards to engage with the connecting teeth on the driven gear 8 of the IV gear, and the other shift synchronizer assembly 19 on the main shift driven shaft S6 does not engage with the connecting teeth of the adjacent gear. Power is provided by the main shift driving shaft S1 → the IV gear driving gear 7 → the IV gear driven gear 8 → the shift synchronizer assembly 19 → the main shift driven shaft S2.
Power is transmitted to the main shift driven shaft S2, and then from the main shift driven shaft S2 to the subtransmission B2. The subtransmission device B2 can realize four different shift stages according to the states of the high-low range sleeve 22 on the subtransmission driven shaft S4 and the medium-range sleeve 21 on the subtransmission driving shaft S3, and the power transmission path of each shift stage is as follows:
low gear: the high-low gear sleeve 22 on the sub-transmission driven shaft S4 slides rightward and engages with the connecting teeth on the low-low gear driven gear 12, and the middle gear sleeve 21 on the sub-transmission driving shaft S3 does not engage with the connecting teeth of the adjacent gear. The power is transmitted from the main shift driven shaft S2 → the constant mesh driving gear 9 → the constant mesh driven gear 10 → the auxiliary shift driving shaft S3 → the low gear driving gear 11 → the low gear driven gear 12 → the high and low gear engaging sleeve 22 → the auxiliary shift driven shaft S4 → the bevel pinion 15 → the rear axle of the tractor.
The first gear is selected: the intermediate gear sleeve 21 on the subtransmission drive shaft S3 slides leftward to engage with the connecting teeth on the intermediate drive gear 13, and the high-low gear sleeve 22 on the subtransmission driven shaft S4 does not engage with the connecting teeth of the adjacent gear. The power is transmitted by the main gear driven shaft S2 → the constant mesh driving gear 9 → the constant mesh driven gear 10 → the auxiliary gear driving shaft S3 → the middle gear engaging sleeve 21 → the middle gear driving gear 13 → the middle gear driven gear 14 → the auxiliary gear driven shaft S4 → the small bevel gear 15 → the tractor rear axle.
And (3) middle-second grade: the intermediate gear sleeve 21 on the sub-transmission driving shaft S3 slides rightward to engage with the connecting teeth on the intermediate gear driving gear 15, and the high-low gear sleeve 22 on the sub-transmission driven shaft S4 does not engage with the connecting teeth of the adjacent gear. The power is transmitted by the main gear driven shaft S2 → the constant mesh driving gear 9 → the constant mesh driven gear 10 → the auxiliary gear driving shaft S3 → the middle gear engaging sleeve 21 → the middle gear driving gear 15 → the middle gear driven gear 16 → the auxiliary gear driven shaft S4 → the small bevel gear 15 → the tractor rear axle.
High gear: the high-low gear sleeve 22 on the sub-transmission driven shaft S4 slides leftwards to be engaged with the connecting teeth on the normally meshed driving gear 9 on the main transmission driven shaft S2, and the middle gear sleeve 21 on the sub-transmission driving shaft S3 is not engaged with the connecting teeth of the adjacent gear. The power is transmitted by the main gear driven shaft S2 → the constant mesh driving gear 9 → the high-low gear engaging sleeve 22 → the auxiliary gear driven shaft S4 → the small bevel gear 15 → the tractor rear axle.
With each gear achieved by the range transmission B2, tractor power is transmitted to the range driven shaft S4, some of which passes through the transfer case drive gear 17 → transfer case idler gear 18 → transfer case → tractor front axle.
The combination of the main transmission device B1 and the auxiliary transmission device B2 can realize the transmission of power to the rear axle and the front axle of the tractor, and can realize 16 different gears.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that various changes, modifications and substitutions can be made without departing from the spirit and scope of the present invention. All changes, modifications, equivalents and the like which come within the spirit of the invention are intended to be embraced therein.
Claims (10)
1. A variable speed drive for a tractor comprising: a main transmission (B1), a sub-transmission (B2), a transfer case idler (18); the method is characterized in that: the main transmission device (B1) and the auxiliary transmission device (B2) are sequentially arranged from front to back, wherein one end of the main transmission device (B1) is connected with a front transmission case of a tractor, one end of the auxiliary transmission device (B2) is connected with a rear axle of the tractor, an idler gear (18) of a transfer case is connected with the transfer case of the tractor, a main transmission driving shaft (S1) and a main transmission driven shaft (S2) are arranged in the main transmission device (B1), an auxiliary transmission driving shaft (S3) and an auxiliary transmission driven shaft (S4) are arranged in the auxiliary transmission device (B2), an idler shaft (S5) of the transfer case is arranged, and a power output shaft (S6) penetrates through the main transmission driving shaft (S1) and the auxiliary transmission driving shaft (S3.
2. A variable speed drive for a tractor according to claim 1, wherein: the main transmission device (B1) includes: a main shift driving shaft (S1) and a main shift driven shaft (S2); the two shafts are arranged up and down in a plane: a first-gear driving gear (1), a second-gear driving gear (3), a third-gear driving gear (5) and a fourth-gear driving gear (7) are fixedly mounted on the main speed change driving shaft (S1); two shifting synchronizer assemblies (19) are fixedly arranged on the main speed change driven shaft (S2), and an I-gear driven gear (2), an II-gear driven gear (4), an III-gear driven gear (6) and an IV-gear driven gear (8) are arranged on the idle sleeve.
3. A variable speed drive for a tractor according to claim 1, wherein: the transmission is characterized in that a first-gear driving gear (1), a second-gear driving gear (3), a third-gear driving gear (5) and a fourth-gear driving gear (7) on a main transmission driving shaft (S1) are meshed with a first-gear driven gear (2), a second-gear driven gear (4), a third-gear driven gear (6) and a fourth-gear driven gear (8) on a main transmission driven shaft (S2) respectively.
4. A variable speed drive for a tractor according to claim 1, wherein: the meshing sleeves of the two shifting synchronizer assemblies (19) on the main gear driven shaft (S2) can slide left and right along the axial direction.
5. A variable speed drive for a tractor according to claim 1, wherein: the subtransmission device (B2) includes: an auxiliary speed change driving shaft (S3) and an auxiliary speed change driven shaft (S4), wherein the two shafts are arranged up and down in a plane; a normally meshed driven gear (10), a low-gear driving gear (11), a middle-first-gear driving gear (13) and a middle-second-gear driving gear (15) are fixedly arranged on the auxiliary speed change driving shaft (S3); a middle-first-gear driven gear (14) and a middle-second-gear driven gear (16) are fixedly mounted on the auxiliary variable-speed driven shaft (S4), a low-gear driven gear (12) is mounted in a free manner, the auxiliary variable-speed driven shaft (S4) and the bevel pinion (20) are integrated, and the normally-meshed driving gear (9) and the main variable-speed driven shaft (S2) are integrated.
6. A variable speed drive for a tractor according to claim 1, wherein: a normally meshed driving gear (9), a low gear driving gear (11), a first middle gear driving gear (13) and a second middle gear driving gear (15) on the auxiliary speed change driving shaft (S3) are meshed with a normally meshed driven gear (10), a low gear driven gear (12), a first middle gear driven gear (14) and a second middle gear driven gear (16) respectively; a middle gear engaging sleeve (21) is mounted on the auxiliary transmission driving shaft (S3), and the middle gear engaging sleeve (21) can slide left and right along the axial direction.
7. A variable speed drive for a tractor according to claim 1, wherein: and the auxiliary transmission driven shaft (S4) is provided with a high-low gear engaging sleeve (22), and the high-low gear engaging sleeve (22) can slide left and right along the axial direction to selectively engage with the connecting teeth on the adjacent gear.
8. A variable speed drive for a tractor according to claim 1, wherein: a transfer case driving gear (17) is installed between a first-gear driven gear (14) and a second-gear driven gear (16) on the auxiliary transmission driven shaft (S4), two conical bearings are arranged at two ends of the first-gear driven gear (14) and the second-gear driven gear (16) on the auxiliary transmission driven shaft (S4), and a low-gear driven gear (12) and a high-low gear meshing sleeve (22) are arranged at the front end of the auxiliary transmission driven shaft (S4) in a cantilever mode.
9. A variable speed drive for a tractor according to claim 1, wherein: the transfer case idler shaft (S5) is arranged below the auxiliary transmission driven shaft (S4), a transfer case idler (18) is arranged on the transfer case idler shaft (S5), and a transfer case driving gear (17) is meshed with the transfer case idler (18).
10. A variable speed drive for a tractor according to claim 1, wherein: the power output shaft (S6) is sleeved in the main gear drive shaft (S1) and the auxiliary gear drive shaft (S3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921234770.7U CN210949781U (en) | 2019-08-01 | 2019-08-01 | Variable speed transmission device for tractor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921234770.7U CN210949781U (en) | 2019-08-01 | 2019-08-01 | Variable speed transmission device for tractor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210949781U true CN210949781U (en) | 2020-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921234770.7U Active CN210949781U (en) | 2019-08-01 | 2019-08-01 | Variable speed transmission device for tractor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210949781U (en) |
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2019
- 2019-08-01 CN CN201921234770.7U patent/CN210949781U/en active Active
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