Hydraulic machinery continuously variable transmission device

Abstract

The invention discloses a hydraulic machinery continuously variable transmission device. The hydraulic machinery continuously variable transmission device comprises an engine, a gearbox box body, a gearbox input shaft and a gearbox output shaft, wherein the gearbox input shaft and the gearbox output shaft are installed on the gearbox box body due to bearing supporting; the gearbox input shaft andthe gearbox output shaft can both rotate around the axes of themselves, and a rear axle box input shaft is installed in a rear axle box; the gearbox output shaft is connected with the rear axle box input shaft; the rear end of the engine is connected with the front end of the gearbox input shaft; the gearbox input shaft is connected with a mechanical transmission portion and a hydraulic transmission portion; the power of the engine is transmitted to the gearbox input shaft and then is divided into two ways to be transmitted; and the power in one way is transmitted through the mechanical transmission portion, and the power in the other way is transmitted through the hydraulic transmission portion. The hydraulic machinery continuously variable transmission device has the following advantagesthat the hydraulic and mechanical power dividing transmission technology is adopted, the power of the engine is divided into two ways for transmission, the power in one way is transmitted through a mechanical way, the power in the other way is transmitted through a hydraulic way, the structure is simple, and continuously variable speeds in area segments can be achieved.

Description

technical field

[0001] The invention belongs to the field of tractors, and relates to a variable speed transmission system of a tractor, in particular to a hydraulic mechanical stepless transmission device. Background technique

[0002] Mechanical gear shifting tractors adopt sliding gear shifting, meshing sleeve shifting, and synchronizer shifting. This type of tractor is complex to operate, and the power needs to be cut off during the shifting process. The transmission ratio is discontinuous, resulting in high fuel consumption and low operating efficiency. Power shifting tractors have continuous power during the gear shifting process, and the operation is relatively simple, but the transmission ratio is discontinuous, so it is impossible to select the appropriate transmission ratio according to the vehicle load, and the engine cannot work in the best state. The transmission system is complicated and the price of the tractor is high. .

[0003] The working principle of hyd...

Examples

Embodiment 1

[0031] Such as figure 1 As shown, a hydraulic mechanical continuously variable transmission device includes a gearbox case 6 and a rear axle case 14, a hydraulic continuously variable transmission 4 is installed on the front end of the gearbox case 6, and the gearbox case 6 is supported by a bearing The gearbox input shaft 3 and the gearbox output shaft 10 are installed, and both the gearbox input shaft 3 and the gearbox output shaft 10 can rotate around their own axes. The hydraulic continuously variable transmission 4 is located below the gearbox input shaft 3, and the rear axle box 14 A rear axle box input shaft 17 is installed inside, and the gearbox output shaft 10 is connected to the rear axle box input shaft 17 .

[0032] The front end of the gearbox input shaft 3 is connected to the rear end of the engine 1, and a first sensor 2 is installed near the gearbox input shaft 3. The first sensor 2 measures the speed of the gearbox input shaft 3, and the speed is named n3.

...

Embodiment 2

[0052] The same part as that of Embodiment 1 has been discussed in detail in Embodiment 1, and will not be repeated here. Compared with Embodiment 1, this embodiment is modified as follows:

[0053] Such as Figure 4 As shown, the gear z12 is fixedly installed on the transmission output shaft 10, the transmission output shaft 10 is connected with the third clutch k3, and the third clutch k3 is connected with the gear z14 and the gear z15.

[0054] The gear z12 is meshed with a gear z13, and the gear z15 is meshed with a gear z14 and a gear z16.

[0055] The gearbox is provided with 3 gear positions, which are L gear, H gear and R gear respectively. L gear is composed of gear z10 meshing with gear z11, H gear is composed of gear z12 meshing with gear z13, and R gear is composed of gear z15 meshing with gear z11. The gear z14 and the gear z16 are meshed, and the first clutch k1, the second clutch k2 and the third clutch k3 are used to switch.

technical field

[0001] The invention belongs to the field of tractors, and relates to a variable speed transmission system of a tractor, in particular to a hydraulic mechanical stepless transmission device. Background technique

[0002] Mechanical gear shifting tractors adopt sliding gear shifting, meshing sleeve shifting, and synchronizer shifting. This type of tractor is complex to operate, and the power needs to be cut off during the shifting process. The transmission ratio is discontinuous, resulting in high fuel consumption and low operating efficiency. Power shifting tractors have continuous power during the gear shifting process, and the operation is relatively simple, but the transmission ratio is discontinuous, so it is impossible to select the appropriate transmission ratio according to the vehicle load, and the engine cannot work in the best state. The transmission system is complicated and the price of the tractor is high. .

[0003] The working principle of hyd...

Examples

Embodiment 1

[0031] Such as figure 1 As shown, a hydraulic mechanical continuously variable transmission device includes a gearbox case 6 and a rear axle case 14, a hydraulic continuously variable transmission 4 is installed on the front end of the gearbox case 6, and the gearbox case 6 is supported by a bearing The gearbox input shaft 3 and the gearbox output shaft 10 are installed, and both the gearbox input shaft 3 and the gearbox output shaft 10 can rotate around their own axes. The hydraulic continuously variable transmission 4 is located below the gearbox input shaft 3, and the rear axle box 14 A rear axle box input shaft 17 is installed inside, and the gearbox output shaft 10 is connected to the rear axle box input shaft 17 .

[0032] The front end of the gearbox input shaft 3 is connected to the rear end of the engine 1, and a first sensor 2 is installed near the gearbox input shaft 3. The first sensor 2 measures the speed of the gearbox input shaft 3, and the speed is named n3.

...

Embodiment 2

[0052] The same part as that of Embodiment 1 has been discussed in detail in Embodiment 1, and will not be repeated here. Compared with Embodiment 1, this embodiment is modified as follows:

[0053] Such as Figure 4 As shown, the gear z12 is fixedly installed on the transmission output shaft 10, the transmission output shaft 10 is connected with the third clutch k3, and the third clutch k3 is connected with the gear z14 and the gear z15.

[0054] The gear z12 is meshed with a gear z13, and the gear z15 is meshed with a gear z14 and a gear z16.

[0055] The gearbox is provided with 3 gear positions, which are L gear, H gear and R gear respectively. L gear is composed of gear z10 meshing with gear z11, H gear is composed of gear z12 meshing with gear z13, and R gear is composed of gear z15 meshing with gear z11. The gear z14 and the gear z16 are meshed, and the first clutch k1, the second clutch k2 and the third clutch k3 are used to switch.

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