CN215110337U - Tractor power high gear and power reversing transmission device - Google Patents
Tractor power high gear and power reversing transmission device Download PDFInfo
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- CN215110337U CN215110337U CN202120584906.8U CN202120584906U CN215110337U CN 215110337 U CN215110337 U CN 215110337U CN 202120584906 U CN202120584906 U CN 202120584906U CN 215110337 U CN215110337 U CN 215110337U
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Abstract
The tractor power high gear and power reversing transmission device is composed of a high gear reversing input shaft, a reversing output shaft, a high gear reversing driven shaft, an idler wheel assembly and the like which are arranged in a box body, wherein 3 clutches are mounted on the high gear reversing input shaft to realize the power high gear and power reversing functions. The transmission device is combined with a tractor gearbox, can transmit the power of an engine to a rear axle, a front axle and a PTO device, realizes 24 forward gears and 12 reverse gears, is simple and convenient to shift and reverse, is convenient to operate, has high transmission efficiency and wide speed range, and improves the adaptability of tractor operation and the convenience of operation.
Description
Technical Field
The utility model belongs to the technical field of the tractor, a tractor power high gear and power reversing transmission are related to.
Background
The power shifting and power reversing technology of the tractor can realize shifting or reversing without cutting off power, is convenient and quick to operate, and is widely applied to European and American tractors. The power high-low gear (Hi-Lo) technology is simple in structure and convenient to control because the on-load switching is only carried out between two gears, and is applied to domestic tractors of multiple manufacturers and popular with users.
The invention patent of the national intellectual property office in 2017, 9, 15 and published as 'gearbox assembly with power high and low gear and power reversing' for tractor, the patent application numbers are as follows: 201710593810.6, the gearbox is internally provided with a power reversing device, a power high-low gear, a four-gear main gear and a two-gear auxiliary gear in sequence, the box body is long, and the processing and the assembly are inconvenient; the invention patent 'a tractor power reversing and power high-low gear gearbox transmission mechanism' published by the national intellectual property office in 2019, 3, month and 22, has the patent application numbers of: 201811639217.1, a power reversing gear, a power high-low gear, a four-gear main gear and an auxiliary gear are sequentially arranged in the gearbox; the power reversing and power high-low gear clutches of the two are arranged in series in R, Hi and Lo modes except the position difference on the driving shaft and the driven shaft, the Hi gear with high rotating speed is positioned in the middle of the shaft, and the oil stirring loss is large.
Disclosure of Invention
The invention aims to provide a tractor power high gear and power reversing transmission device which is simple and convenient in gear shifting and reversing, wide in speed range, convenient to operate, efficient in transmission and convenient to assemble.
In order to realize the technical purpose, the adopted technical scheme is as follows: the tractor power high gear and power reversing transmission device consists of a high gear reversing input shaft, a reversing output shaft, a high gear reversing driven shaft, an idler assembly, a high gear driving gear, a high gear driven gear, a reverse gear driving gear, a reverse gear driven gear, a normally engaged driving gear and a normally engaged driven gear which are arranged in a box body;
one end of a high-gear reversing input shaft is connected with an engine and supported on a box body through a bearing, the other end of the high-gear reversing input shaft is supported in one end of a reversing output shaft through a bearing, the other end of the reversing output shaft is connected with a gearbox input shaft through a connecting sleeve, and the axes of the high-gear reversing input shaft, the reversing output shaft and the gearbox input shaft form a shaft system on the same straight line; the power output shaft sequentially penetrates through the transmission input shaft and the reversing output shaft and is connected with the other end of the high-gear reversing input shaft through the spline sleeve, and the high-gear reversing input shaft and the high-gear reversing driven shaft are arranged in parallel;
a high-gear driving gear and a reverse-gear driving gear are sleeved on the high-gear reversing input shaft in an empty mode, and a high-gear clutch, a reverse-gear clutch and a low-gear clutch are fixedly and sequentially installed, wherein the high-gear clutch is close to the front end face of the box body, and the reverse-gear clutch is located in the middle and fixed with the low-gear clutch; when the high-gear clutch is engaged, the high-gear driving gear and the high-gear reversing input shaft are connected into a whole; when the reverse gear clutch is engaged, the reverse gear driving gear is connected with the high gear reversing input shaft into a whole; when the low-gear clutch is engaged, the high-gear reversing input shaft and the reversing output shaft are connected into a whole;
the reversing output shaft is arranged in the middle of the box body through a supporting bearing, and a normally meshed driven gear is fixed on the reversing output shaft;
two ends of a high-gear reversing driven shaft are supported on the box body through bearings, a high-gear driven gear, a reverse-gear driven gear and a normally-meshed driving gear are sequentially keyed on the high-gear reversing driven shaft from front to back, the high-gear driven gear is meshed with the high-gear driving gear, and the normally-meshed driving gear is meshed with the normally-meshed driven gear;
the reverse driving gear and the reverse driven gear are meshed with an idler wheel of the idler wheel assembly respectively.
The high-gear clutch, the reverse-gear clutch and the low-gear clutch are wet multi-plate clutches.
The reversing output shaft is a hollow gear shaft.
The constant mesh driven gear is positioned between the two support bearings and is integrated with the reversing output shaft.
The idler assembly is composed of an idler shell, an idler shaft and an idler, the idler shaft is fixed on the idler shell, the idler is sleeved on the idler shaft in an empty mode through a bearing, and the idler shell is fixed on the box body through bolts.
The idler assembly is fixed in the middle of the left side face of the box body through a bolt.
The invention has the beneficial effects that: the power high gear and power reversing transmission device of the tractor adopts the arrangement mode, the power high gear and power reversing functions can be realized simultaneously, the transmission route is clear, the structure is compact, and the universality of parts is strong. The device is combined with a gearbox (12 speed), 24 forward gears and 12 reverse gears can be realized, and the operation adaptability is good; the power high gear and the power reversing are arranged in front of the gearbox, the load torque is relatively small during reversing, the control is convenient, and the reversing smoothness is good; meanwhile, a high-gear clutch, a reverse gear clutch and a low-gear clutch are arranged on one shaft of the high-gear reversing input shaft, and high-low power gear shifting and power reversing functions can be simultaneously realized by only using 3 clutches, so that the structure is compact; particularly, the high-gear clutch is close to the front end face of the box body, so that the high-gear with high rotation speed is close to the box body, the shearing effect on oil is small, and meanwhile, each clutch is positioned above the lubricating oil level of the transmission system, so that the oil stirring loss is reduced, and the heat balance of the transmission system is facilitated; the reverse gear clutch is positioned in the middle and fixed with the low gear clutch to form a power reversing clutch, and a clutch shell can be adopted, so that the processing and the entering of lubricating oil are facilitated; after the low-gear clutch is engaged, the high-gear reversing input shaft and the reversing output shaft are connected into a whole, the power of an engine can be directly input into the gearbox, and the transmission efficiency is high; the reverse gear driving and driven gear with relatively small transmission torque is positioned in the middle of the shaft, so that the deformation of the shaft can be reduced; the reverse gear idler wheel assembly is fixed in the middle of the left side face of the box body through a bolt, so that the assembly of the high-gear reversing input shaft and the high-gear reversing driven shaft is facilitated, the states of the clutches can be observed through windows of the reverse gear idler wheel assembly, and the overhaul is facilitated.
Drawings
Fig. 1 is a schematic view of the present invention.
Detailed Description
As shown in fig. 1, the tractor power high gear and power reversing transmission device is composed of a high gear reversing input shaft S1, a reversing output shaft S1, a high gear reversing driven shaft S3, an idler assembly T4, a high gear driving gear 1, a high gear driven gear 6, a reverse gear driving gear 2, a reverse gear driven gear 7, a normally engaged driving gear 10 and a normally engaged driven gear 3 which are arranged in a box body.
One end of a high-gear reversing input shaft S1 is connected with an engine, the other end of the high-gear reversing input shaft S1 is connected with a power output shaft S5, a reversing output shaft S2 is connected with a gearbox input shaft S4, the axes of the high-gear reversing input shaft S1, the reversing output shaft S2 and the gearbox input shaft S4 form a shaft system on a straight line, and the high-gear reversing input shaft and a high-gear reversing driven shaft are arranged in parallel; the power output shaft S5 passes through the inside of the gearbox input shaft S4 and the reversing output shaft S2 and is connected with the high-gear reversing input shaft S1 and the other end through the spline sleeve 4.
The high-gear reversing input shaft S1 is supported at one end by a bearing on the left end face of the case H1 and at the other end by a bearing in the reversing output shaft S2. A high-gear driving gear 1 and a reverse-gear driving gear 2 are mounted on the high-gear reversing input shaft S1 in a hollow sleeve mode, a high-gear clutch Hi, a reverse-gear clutch R and a low-gear clutch Lo are fixedly mounted on the high-gear reversing input shaft S1, the high-gear clutch Hi is close to the front end face of a box H1, and the reverse-gear clutch R is located in the middle and fixed with the low-gear clutch Lo. The high clutch Hi, the reverse clutch R, and the low clutch Lo are wet multiplate clutches. When the high-gear clutch Hi is engaged, the high-gear driving gear 1 and the high-gear reversing input shaft S1 are connected into a whole; when the reverse clutch R is engaged, the reverse drive gear 2 is integrated with the high-gear reversing input shaft S1; when the low clutch Lo is engaged, the high reversing input shaft S1 and the reversing output shaft S2 are connected together.
The reversing output shaft S2 is arranged on a partition wall in the box body H1 through two rows of supporting bearings and is in key joint with the input shaft S4 of the gearbox through a connecting sleeve 11; the reversing output shaft S2 is fixed with a constant mesh driven gear 3, and the constant mesh driven gear 3 is positioned between two rows of support bearings and is integrated with the reversing output shaft S2.
The high-gear reversing driven shaft S3 is sequentially keyed with a high-gear driven gear 6, a reverse-gear driven gear 7 and a normally-meshed driving gear 10, wherein the high-gear driven gear 6 is meshed with the high-gear driving gear 1, and the normally-meshed driving gear 10 is meshed with the normally-meshed driven gear 3.
The idler assembly T4 is composed of an idler housing 9, an idler shaft S6 and an idler 8, the idler shaft S6 is fixed on the idler housing 9, and the idler 8 is freely sleeved on the idler shaft S6 through a bearing and is meshed with the reverse drive gear 2 and the reverse driven gear 7 respectively. The idler case 9 is fixed to the left side surface of the case H1 by bolts.
The working principle of the invention is as follows:
the power of the engine can be transmitted by the tractor power high gear and power reversing transmission device in two ways. The transmission path is as follows:
the first path of power is transmitted from the engine to the power output shaft S5 through the high-gear reversing input shaft S1 and the spline sleeve 4, and drives the tractor power output device PTO, so that independent power output is realized.
The second power path is transmitted from the engine to the high clutch Hi, the reverse clutch R and the low clutch Lo through the high reverse input shaft S1, and 2 forward gears and 1 reverse gear can be realized according to different engagement states, and the power transmission path of each gear is as follows:
high power gear: the high clutch Hi is engaged while the reverse clutch R and the low clutch Lo are disengaged, and power is transmitted from the high reversing input shaft S1 → the high clutch Hi → the high drive gear 1 → the high driven gear 6 → the high reversing driven shaft S3 → the normally engaged drive gear 10 → the normally engaged driven gear 3 → the reversing output shaft S2 → the connecting sleeve 11 → the transmission input shaft S4 → the transmission T3.
And (3) normal forward gear: the low clutch Lo is engaged while the reverse clutch R and the high clutch Hi are disengaged, and power is transmitted from the high changeover input shaft S1 → the low clutch Lo → the changeover output shaft S2 → the connecting sleeve 11 → the transmission input shaft S4 → the transmission T3.
Reverse gear: the reverse clutch R is engaged while the high clutch Hi and the low clutch Lo are disengaged, and power is transmitted from the high reversing input shaft S1 → the reverse clutch R → the reverse drive gear 2 → the reverse idler 8 → the reverse driven gear 7 → the high reversing driven shaft S3 → the constant mesh drive gear 10 → the constant mesh driven gear 3 → the reversing output shaft S2 → the connecting sleeve 11 → the transmission input shaft S4 → the transmission T3.
The gearbox T3 is divided into a main transmission and an auxiliary transmission, wherein the main transmission has four gears I, II, III and IV, and the auxiliary transmission has three range gears L, M and H. The combination of power high and power reversing with the gearbox T3 can achieve 24 forward gears and 12 reverse gears, transmitting the engine power to the tractor rear axle and front axle simultaneously.
Claims (6)
1. Tractor power high gear and power switching-over transmission, its characterized in that: the reversing device comprises a high-gear reversing input shaft, a reversing output shaft, a high-gear reversing driven shaft, an idler wheel assembly, a high-gear driving gear, a high-gear driven gear, a reverse gear driving gear, a reverse gear driven gear, a normally meshed driving gear and a normally meshed driven gear which are arranged in a box body;
one end of a high-gear reversing input shaft is connected with an engine and supported on a box body through a bearing, the other end of the high-gear reversing input shaft is supported in one end of a reversing output shaft through a bearing, the other end of the reversing output shaft is connected with a gearbox input shaft through a connecting sleeve, and the axes of the high-gear reversing input shaft, the reversing output shaft and the gearbox input shaft form a shaft system on the same straight line; the power output shaft sequentially penetrates through the transmission input shaft and the reversing output shaft and is connected with the other end of the high-gear reversing input shaft through the spline sleeve, and the high-gear reversing input shaft and the high-gear reversing driven shaft are arranged in parallel;
a high-gear driving gear and a reverse-gear driving gear are sleeved on the high-gear reversing input shaft in an empty mode, and a high-gear clutch, a reverse-gear clutch and a low-gear clutch are fixedly and sequentially installed, wherein the high-gear clutch is close to the front end face of the box body, and the reverse-gear clutch is located in the middle and fixed with the low-gear clutch; when the high-gear clutch is engaged, the high-gear driving gear and the high-gear reversing input shaft are connected into a whole; when the reverse gear clutch is engaged, the reverse gear driving gear is connected with the high gear reversing input shaft into a whole; when the low-gear clutch is engaged, the high-gear reversing input shaft and the reversing output shaft are connected into a whole;
the reversing output shaft is arranged in the middle of the box body through a supporting bearing, and a normally meshed driven gear is fixed on the reversing output shaft;
two ends of a high-gear reversing driven shaft are supported on the box body through bearings, a high-gear driven gear, a reverse-gear driven gear and a normally-meshed driving gear are sequentially keyed on the high-gear reversing driven shaft from front to back, the high-gear driven gear is meshed with the high-gear driving gear, and the normally-meshed driving gear is meshed with the normally-meshed driven gear;
the reverse driving gear and the reverse driven gear are meshed with an idler wheel of the idler wheel assembly respectively.
2. The tractor power high gear and power reversing transmission device according to claim 1, characterized in that: the high-gear clutch, the reverse-gear clutch and the low-gear clutch are wet multi-plate clutches.
3. The tractor power high gear and power reversing transmission device according to claim 1, characterized in that: the reversing output shaft is a hollow gear shaft.
4. The tractor power high gear and power reversing transmission device according to claim 1, characterized in that: the constant mesh driven gear is positioned between the two support bearings and is integrated with the reversing output shaft.
5. The tractor power high gear and power reversing transmission device according to claim 1, characterized in that: the idler assembly is composed of an idler shell, an idler shaft and an idler, the idler shaft is fixed on the idler shell, the idler is sleeved on the idler shaft in an empty mode through a bearing, and the idler shell is fixed on the box body through bolts.
6. The tractor power high gear and power reversing transmission device according to claim 1, characterized in that: the idler assembly is fixed in the middle of the left side face of the box body through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120584906.8U CN215110337U (en) | 2021-03-23 | 2021-03-23 | Tractor power high gear and power reversing transmission device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120584906.8U CN215110337U (en) | 2021-03-23 | 2021-03-23 | Tractor power high gear and power reversing transmission device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215110337U true CN215110337U (en) | 2021-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120584906.8U Active CN215110337U (en) | 2021-03-23 | 2021-03-23 | Tractor power high gear and power reversing transmission device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215110337U (en) |
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2021
- 2021-03-23 CN CN202120584906.8U patent/CN215110337U/en active Active
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