阅读说明：本技术 一种五轮拖拉机 (Five-wheel tractor ) 是由 刘恩丰 于 2020-08-17 设计创作，主要内容包括：本发明涉及农机领域,具体的说是一种五轮拖拉机,拖拉机内设有发动机、离合器、五轮变速箱、第五轮以及提升装置。五轮变速箱包括输入轴、倒档中间轴和输出轴。输入轴上安装有倒档主动齿轮、高档主动齿轮和低档主动齿轮。倒档中间轴上安装有倒档中间齿轮。输出轴上安装有倒档从动齿轮、高档从动齿轮和低档从动齿轮。倒档从动齿轮一侧设有第一啮合套,高档从动齿轮和低档从动齿轮之间仅设有第二啮合套。所输入轴的后端通过离合器连接到所述发动机上,输出轴的前端连接第五轮。所述提升装置用于第五轮的提升或下降。本发明操作方便,工作效率高,安全可靠。(The invention relates to the field of agricultural machinery, in particular to a five-wheel tractor, wherein an engine, a clutch, a five-wheel gearbox, a fifth wheel and a lifting device are arranged in the tractor. The five-wheel gearbox comprises an input shaft, a reverse gear intermediate shaft and an output shaft. The input shaft is provided with a reverse gear driving gear, a high-gear driving gear and a low-gear driving gear. The reverse intermediate shaft is provided with a reverse intermediate gear. The output shaft is provided with a reverse driven gear, a high-grade driven gear and a low-grade driven gear. A first meshing sleeve is arranged on one side of the reverse driven gear, and only a second meshing sleeve is arranged between the high-grade driven gear and the low-grade driven gear. The rear end of the input shaft is connected to the engine through a clutch, and the front end of the output shaft is connected with a fifth wheel. The lifting device is used for lifting or lowering the fifth wheel. The invention has the advantages of convenient operation, high working efficiency, safety and reliability.)

1. The utility model provides a five-wheeled tractor, includes the tractor, be equipped with engine, clutch, fifth wheel and hoisting device in the tractor, hoisting device is used for the promotion or the decline of fifth wheel, its characterized in that: the transmission is characterized by further comprising a five-wheel transmission, wherein the five-wheel transmission comprises an input shaft, a reverse intermediate shaft and an output shaft, a reverse driving gear, a high-gear driving gear and a low-gear driving gear are mounted on the input shaft, a reverse intermediate gear meshed with the reverse driving gear is mounted on the reverse intermediate shaft, a reverse driven gear, a high-gear driven gear and a low-gear driven gear are mounted on the output shaft and respectively meshed with the reverse intermediate gear, the high-gear driving gear and the low-gear driving gear, a first meshing sleeve is arranged on one side of the reverse driven gear, only a second meshing sleeve is arranged between the high-gear driven gear and the low-gear driven gear, the rear end of the input shaft is connected to the engine through the clutch, and the front end of the output shaft is connected with the fifth wheel.

2. The five-wheeled tractor according to claim 1, wherein: the fifth wheel is mounted on an axle which is connected to the output shaft by a universal joint.

3. The five-wheeled tractor according to claim 1, wherein: the lifting device is a hydraulic lifting device.

4. A five-wheeled tractor according to claim 3, wherein: the hydraulic lifting device comprises a connecting rod, a lifting arm, an oil cylinder connecting arm, a rotating shaft, a hydraulic oil cylinder and an oil cylinder seat, wherein the hydraulic oil cylinder is fixed on the tractor through the oil cylinder seat, the oil cylinder connecting arm and the lifting arm are rotatably installed on the rotating shaft, the oil cylinder connecting arm is connected to the hydraulic oil cylinder, the lifting arm is hinged to the upper end of the connecting rod, and the lower end of the connecting rod is hinged to the axle.

5. The five-wheeled tractor according to claim 1, wherein: the reverse gear driven gear is arranged close to the rear end of the output shaft, and the first meshing sleeve is arranged on the front side of the reverse gear driven gear.

6. The five-wheeled tractor according to claim 1, wherein: the reverse gear driven gear is arranged close to the front end of the output shaft, and the first meshing sleeve is arranged on the rear side of the reverse gear driven gear.

7. The five-wheeled tractor according to any one of claims 1 to 6, wherein: and the first meshing sleeve and the second meshing sleeve are respectively provided with a first shifting fork and a second shifting fork.

Technical Field

The invention relates to the field of agricultural machinery, in particular to a five-wheel tractor.

Background

A tractor is an important agricultural implement, and when a rear-mounted agricultural implement is mounted for operation, it is generally necessary to turn at the ground, but a four-wheel tractor in the prior art has a large turning radius when turning, and thus has low operation efficiency. Aiming at the problems, in the practical work, a plurality of people artificially modify the four-wheel tractor, only a fifth wheel is additionally arranged in the front of the tractor, the fifth wheel is lifted and descended by utilizing a lifting device, and when the fifth wheel is required to turn, the fifth wheel is forced to rotate by depending on the driving force of a rear wheel so as to turn around and turn the tractor. But only rely on the rear wheel to provide power, just make the fifth wheel power less when rotating, the wheel skids easily when soil texture is comparatively soft or ground is comparatively muddy, and turning power is not enough, and efficiency is lower, and the security performance is relatively poor.

Disclosure of Invention

The invention discloses a five-wheel tractor, which is provided with a five-wheel gearbox for providing power for a fifth wheel and controlling the rotation of the fifth wheel, so that the tractor can have stronger power when turning, the working efficiency is improved, and the tractor is safe and reliable.

The invention relates to a five-wheel tractor which comprises a tractor, wherein an engine, a clutch, a five-wheel gearbox, a fifth wheel and a lifting device are arranged in the tractor. The five-wheel gearbox comprises an input shaft, a reverse gear intermediate shaft and an output shaft. And the input shaft is provided with a reverse gear driving gear, a high-gear driving gear and a low-gear driving gear. And the reverse intermediate shaft is provided with a reverse intermediate gear meshed with the reverse driving gear. And the output shaft is provided with a reverse driven gear, a high-grade driven gear and a low-grade driven gear which are respectively meshed with the reverse intermediate gear, the high-grade driving gear and the low-grade driving gear. And a first meshing sleeve is arranged on one side of the reverse driven gear, and only a second meshing sleeve is arranged between the high-gear driven gear and the low-gear driven gear. The rear end of the input shaft is connected to the engine through the clutch, and the front end of the output shaft is connected with the fifth wheel. The lifting device is used for lifting or lowering the fifth wheel.

Preferably, the fifth wheel is mounted on an axle, the axle being connected to the output shaft by a universal joint.

Preferably, the lifting device is a hydraulic lifting device.

Preferably, the hydraulic lifting device comprises a connecting rod, a lifting arm, an oil cylinder connecting arm, a rotating shaft, a hydraulic oil cylinder and an oil cylinder seat. The hydraulic oil cylinder is fixed on the tractor through the oil cylinder seat. The oil cylinder connecting arm and the lifting arm are rotatably arranged on the rotating shaft, and the oil cylinder connecting arm is connected to the hydraulic oil cylinder. The lifting arm is hinged with the upper end of the connecting rod, and the lower end of the connecting rod is hinged on the axle.

Preferably, the reverse driven gear is disposed near a rear end of the output shaft, and the first meshing sleeve is disposed at a front side of the reverse driven gear.

Preferably, the reverse driven gear is disposed near a front end of the output shaft, and the first engagement sleeve is disposed at a rear side of the reverse driven gear.

Preferably, the first engaging sleeve and the second engaging sleeve are respectively provided with a first shifting fork and a second shifting fork.

The invention has the beneficial effects that: the five-wheel gearbox is arranged to provide power for the fifth wheel and control the rotation of the fifth wheel, so that the tractor can have stronger power when turning. The fifth wheel is lifted or descended by combining the lifting device, so that the tractor can easily realize the pivot turning or straight-going operation. Convenient operation, high working efficiency, safety and reliability.

Drawings

The invention will be further described with reference to the accompanying drawings, which are simplified schematic drawings and illustrate only the basic structure of the invention in a schematic manner and do not constitute a limitation on the invention:

FIG. 1 is a schematic structural diagram of a first embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;

in the figure: 1. the transmission comprises an input shaft, 11, a reverse driving gear, 12, a high-gear driving gear, 13, a low-gear driving gear, 2, a reverse intermediate shaft, 21, a reverse intermediate gear, 3, an output shaft, 31, a reverse driven gear, 32, a high-gear driven gear, 33, a low-gear driven gear, 34, a first meshing sleeve, 35, a second meshing sleeve, 36, a first shifting fork, 37, a second shifting fork, 4, an axle, 5, a universal joint, 61, a connecting rod, 62, a lifting arm, 63, a cylinder connecting arm, 64, a rotating shaft, 65, a hydraulic cylinder, 66, a cylinder seat, 7 and a fifth wheel.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure, as the terms used are used to describe particular embodiments only, and are not intended to limit the exemplary embodiments based on the disclosure.

As shown in fig. 1, a five-wheel tractor according to a first embodiment of the present invention includes a tractor, and an engine, a clutch, a five-wheel transmission, a fifth wheel 7, and a lifting device are provided in the tractor. The five-wheel gearbox comprises an input shaft 1, a reverse intermediate shaft 2 and an output shaft 3. The rear end of the input shaft 1 is connected to the engine through the clutch, and the front end of the output shaft 3 is connected to the fifth wheel 7. Said lifting means being used for lifting or lowering the fifth wheel 7.

The input shaft 1 is provided with a reverse gear driving gear 11, a high gear driving gear 12 and a low gear driving gear 13. And a reverse intermediate gear 21 meshed with the reverse driving gear 11 is arranged on the reverse intermediate shaft 2. The output shaft 3 is provided with a reverse driven gear 31, a high driven gear 32 and a low driven gear 33 which are respectively engaged with the reverse intermediate gear 21, the high driving gear 12 and the low driving gear 13. A first engaging sleeve 34 is arranged on one side of the reverse driven gear 31, only a second engaging sleeve 35 is arranged between the high-gear driven gear 32 and the low-gear driven gear 33, and a first shifting fork 36 and a second shifting fork 37 for controlling the first engaging sleeve 34 and the second engaging sleeve 35 to move back and forth are respectively arranged on the first engaging sleeve and the second engaging sleeve. The reverse driven gear 31 is disposed near the rear end of the output shaft 3, and the first sleeve 34 is disposed on the front side of the reverse driven gear 31. The fifth wheel 7 is mounted on an axle 4, which axle 4 is connected to the output shaft 3 by a universal joint 5.

The lifting device is a hydraulic lifting device. The hydraulic lifting device comprises a connecting rod 61, a lifting arm 62, an oil cylinder connecting arm 63, a rotating shaft 64, a hydraulic oil cylinder 65 and an oil cylinder seat 66, wherein the hydraulic oil cylinder 65 is fixed on a tractor through the oil cylinder seat 66, the oil cylinder connecting arm 63 and the lifting arm 62 are rotatably arranged on the rotating shaft 64, the oil cylinder connecting arm 63 is connected onto the hydraulic oil cylinder 65, the lifting arm 62 is hinged to the upper end of the connecting rod 61, and the lower end of the connecting rod 61 is hinged to the axle 4.

The power of an engine of the tractor is transmitted to an input shaft 1 of the five-wheel gearbox through a clutch, a high-gear driven gear 32 and a low-gear driven gear 33 are driven to rotate through the rotation of a high-gear driving gear 12 and a low-gear driving gear 13 on the input shaft 1 so as to drive an output shaft 3 to rotate, and a second shifting fork 37 is used for controlling a second meshing sleeve 35 to move back and forth to output a low gear or a high gear respectively. The reverse gear driving gear 11 on the input shaft 1 drives the reverse gear intermediate gear 21 to rotate, and further drives the reverse gear driven gear 31 to rotate, and the first shifting fork 36 controls the first meshing sleeve 34 to move back and forth to control the gear engagement or gear shifting of the reverse gear. Therefore, the fifth wheel 7 of the present invention can output two forward gears of high gear and low gear and one reverse gear, and can basically meet the gear requirement when the fifth wheel 7 of the tractor turns.

The front end of the output shaft 3 is connected to an axle 4 provided with a fifth wheel 7 through a universal joint 5, and the fifth wheel 7 can ascend or descend around the universal joint 5 under the action of a lifting device. When the tractor runs in a straight line, the fifth wheel 7 is lifted by the lifting device, and the tractor performs normal forward or backward operation; when the tractor needs to turn, particularly needs to turn on the spot or needs to turn in a narrow distance, the fifth wheel 7 is descended by utilizing the lifting device until the front wheel of the tractor is suspended in the air, and then the tractor is turned by matching with different gears of the fifth wheel 7 output by the five-speed gearbox.

As shown in fig. 2, the second embodiment of the present invention is different from the first embodiment described above in that: the reverse driven gear 31 is disposed near the front end of the output shaft 3, and the first sleeve 34 is disposed on the rear side of the reverse driven gear 31.

In the description of the present invention, the terms "front" and "rear" are used with reference to the orientation of the tractor only for the purpose of simplifying the description of the present invention, and should not be construed as limiting the present invention.

In light of the foregoing description of the preferred embodiment of the present invention, it is to be understood that various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.