阅读说明：本技术 一种拖拉机多档位五轮传动机构 (Multi-gear five-wheel transmission mechanism of tractor ) 是由 刘恩丰 于 2020-08-17 设计创作，主要内容包括：本发明涉及传动装置领域,具体的说是一种拖拉机多档位五轮传动机构,拖拉机内设有第五轮和五轮变速箱。五轮变速箱包括输入轴、倒档中间轴、输出中间轴、后输出轴和前输出轴。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。后输出轴上安装有变档主动齿轮、倒档从动齿轮、高档从动齿轮和低档从动齿轮。前输出轴上安装有变档从动齿轮,输出中间轴上安装有变档中间齿轮一和变档中间齿轮二,后输出轴前端与所述前输出轴的后端通过第三啮合套连接或断开,变档从动齿轮一侧设有与第三啮合套联动的第四啮合套。本发明操作方便,工作效率高,安全可靠。(The invention relates to the field of transmission devices, in particular to a multi-gear five-wheel transmission mechanism of a tractor, wherein a fifth wheel and a five-wheel gearbox are arranged in the tractor. The five-wheel gearbox comprises an input shaft, a reverse intermediate shaft, an output intermediate shaft, a rear output shaft and a front 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. And the rear output shaft is provided with a gear-shifting driving gear, a reverse driven gear, a high-grade driven gear and a low-grade driven gear. The front output shaft is provided with a gear shifting driven gear, the output intermediate shaft is provided with a gear shifting intermediate gear I and a gear shifting intermediate gear II, the front end of the rear output shaft is connected or disconnected with the rear end of the front output shaft through a third meshing sleeve, and one side of the gear shifting driven gear is provided with a fourth meshing sleeve which is linked with the third meshing sleeve. The invention has the advantages of convenient operation, high working efficiency, safety and reliability.)

1. The utility model provides a tractor many gears five-wheel drive mechanism, includes fifth wheel, its characterized in that: the five-wheel gearbox comprises an input shaft, a reverse intermediate shaft, an output intermediate shaft, a rear output shaft and a front output shaft, wherein a reverse driving gear, a high-grade driving gear and a low-grade driving gear are installed on the input shaft, a reverse intermediate gear meshed with the reverse driving gear is installed on the reverse intermediate shaft, a shift driving gear, a reverse driven gear, a high-grade driven gear and a low-grade driven gear are installed on the rear output shaft and respectively meshed with the reverse intermediate gear, the high-grade driving gear and the low-grade driving gear, the shift driving gear is fixedly installed on the rear output shaft, a first meshing sleeve is arranged on one side of the reverse driven gear, a second meshing sleeve is arranged between the high-grade driven gear and the low-grade driven gear, and a shift driven gear is installed on the front output shaft, the output intermediate shaft is provided with a first gear shifting intermediate gear and a second gear shifting intermediate gear which are respectively meshed with the gear shifting driving gear and the gear shifting driven gear, the front end of the rear output shaft and the rear end of the front output shaft are connected or disconnected through a third meshing sleeve, one side of the gear shifting driven gear is provided with a fourth meshing sleeve, the third meshing sleeve and the fourth meshing sleeve are mutually linked, when the third meshing sleeve is moved to connect the rear output shaft and the front output shaft, the fourth meshing sleeve is far away from the gear shifting driven gear, when the third meshing sleeve is moved to disconnect the rear output shaft and the front output shaft, the fourth meshing sleeve is close to the gear shifting driven gear, and the front end of the front output shaft is connected with the fifth wheel.

2. The tractor capable of selecting the rotation speed of the fifth wheel through multiple gears as claimed in claim 1, wherein: the front end of the rear output shaft and the rear end of the front output shaft are respectively provided with a spline hub, when the third meshing sleeve moves backwards to the spline hub at the front end of the rear output shaft, one part of the third meshing sleeve is still meshed with the spline hub at the rear end of the front output shaft, namely, the rear output shaft and the front output shaft are connected when the third meshing sleeve moves backwards, and when the third meshing sleeve moves forwards to the spline hub at the rear end of the front output shaft, the rear output shaft and the front output shaft are disconnected.

3. The tractor capable of selecting the rotation speed of the fifth wheel through multiple gears as claimed in claim 2, wherein: the fourth meshing sleeve is arranged on the rear side of the gear shifting driven gear.

4. The tractor capable of selecting the rotation speed of the fifth wheel through multiple gears as claimed in claim 1, wherein: the front end of the rear output shaft and the rear end of the front output shaft are respectively provided with a spline hub, when the third meshing sleeve moves backwards to the spline hub at the front end of the rear output shaft, the rear output shaft and the front output shaft are disconnected, when the third meshing sleeve moves forwards to the spline hub at the rear end of the front output shaft, a part of the third meshing sleeve is still meshed with the spline hub at the front end of the rear output shaft, namely, the rear output shaft and the front output shaft are connected when the third meshing sleeve moves forwards.

5. The tractor capable of selecting the rotation speed of the fifth wheel in multiple gears as claimed in claim 4, wherein: the fourth meshing sleeve is arranged on the front side of the gear shifting driven gear.

6. A tractor capable of selecting the rotation speed of a fifth wheel through multiple gears according to any one of claims 1 to 5, characterized in that: the first meshing sleeve, the second meshing sleeve, the third meshing sleeve and the fourth meshing sleeve are respectively provided with a first shifting fork, a second shifting fork, a third shifting fork and a fourth shifting fork.

7. A tractor capable of selecting the rotation speed of a fifth wheel through multiple gears according to any one of claims 1 to 5, characterized in that: the rear end of the input shaft is connected to the engine through a clutch.

8. A tractor capable of selecting the rotation speed of a fifth wheel through multiple gears according to any one of claims 1 to 5, characterized in that: the fifth wheel is mounted on an axle which is connected to the front output shaft by a universal joint.

9. The tractor capable of selecting the rotation speed of the fifth wheel with multiple gears as claimed in claim 8, wherein: a connecting device that the third fork and the fourth fork are to be connected to each other.

Technical Field

The invention relates to the field of transmission devices, in particular to a multi-gear five-wheel transmission mechanism of a 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 multi-gear five-wheel transmission mechanism of a tractor, which is capable of selecting the rotating speed of a fifth wheel in multiple gears.

The invention relates to a multi-gear five-wheel transmission mechanism of a tractor, which comprises a five-wheel gearbox and a fifth wheel. The five-wheel gearbox comprises an input shaft, a reverse intermediate shaft, an output intermediate shaft, a rear output shaft and a front 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. The rear output shaft is provided with a gear shifting driving gear, and a reverse gear driven gear, a high gear driven gear and a low gear driven gear which are respectively meshed with the reverse gear intermediate gear, the high gear driving gear and the low gear driving gear, and the gear shifting driving gear is fixedly arranged on the rear output shaft. And a first meshing sleeve is arranged on one side of the reverse driven gear, and a second meshing sleeve is arranged between the high-gear driven gear and the low-gear driven gear. And the front output shaft is provided with a gear-shifting driven gear. And a first gear shifting intermediate gear and a second gear shifting intermediate gear which are respectively meshed with the gear shifting driving gear and the gear shifting driven gear are arranged on the output intermediate shaft. The front end of the rear output shaft and the rear end of the front output shaft are connected or disconnected through a third meshing sleeve, and a fourth meshing sleeve is arranged on one side of the gear shifting driven gear. The third meshing sleeve and the fourth meshing sleeve are mutually linked. When the third meshing sleeve is moved to connect the rear output shaft and the front output shaft, the fourth meshing sleeve is far away from the gear-shifting driven gear; when the third meshing sleeve is moved to disconnect the rear output shaft from the front output shaft, the fourth meshing sleeve is close to the gear shifting driven gear. The front end of the front output shaft is connected with the fifth wheel.

Preferably, a spline hub is mounted to the front end of the rear output shaft and the rear end of the front output shaft, respectively. When the third meshing sleeve moves backwards to the spline hub at the front end of the rear output shaft, one part of the third meshing sleeve is still meshed with the spline hub at the rear end of the front output shaft, namely, the third meshing sleeve connects the rear output shaft with the front output shaft when moving backwards; when the third meshing sleeve moves forwards to the spline hub at the rear end of the front output shaft, the rear output shaft and the front output shaft are disconnected.

Preferably, the fourth sleeve is installed at a rear side of the shift driven gear.

Preferably, a spline hub is mounted to the front end of the rear output shaft and the rear end of the front output shaft, respectively. When the third meshing sleeve moves backwards to the spline hub at the front end of the rear output shaft, the rear output shaft and the front output shaft are disconnected; when the third meshing sleeve moves forwards to the spline hub at the rear end of the front output shaft, one part of the third meshing sleeve is still meshed with the spline hub at the front end of the rear output shaft, namely, the third meshing sleeve moves forwards to connect the rear output shaft and the front output shaft.

Preferably, the fourth sleeve is installed at a front side of the shift driven gear.

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

Preferably, the rear end of the input shaft is connected to the engine through a clutch.

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

Preferably, a connecting device that the third fork and the fourth fork are connected to each other.

The invention has the beneficial effects that: the tractor is provided with the five-wheel gearbox 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, and the tractor is convenient to operate, high in working efficiency, safe and reliable. The fifth wheel can output four forward gears of a first gear, a second gear, a third gear and a fourth gear and two reverse gears of a first reverse gear and a second reverse gear, namely six different gears, and can meet the requirements of the fifth wheel of the tractor on different gears during turning.

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 top plan view of the fifth wheel transmission portion of FIG. 1;

FIG. 3 is a schematic structural view of a fifth speed transmission case portion in a second embodiment of the present invention;

in the figure: 1. the input shaft 11, a reverse gear driving gear 12, a high-gear driving gear 13 and a low-gear driving gear; 2. a reverse intermediate shaft 21 and a reverse intermediate gear; 3. an output intermediate shaft 31, a first gear shifting intermediate gear 32 and a second gear shifting intermediate gear; 4. a rear output shaft 41, a reverse driven gear 42, a high-grade driven gear 43, a low-grade driven gear 44, a shift driving gear 45, a first meshing sleeve 46, a second meshing sleeve 47, a first shifting fork 48 and a second shifting fork; 5. a front output shaft 51, a gear-shifting driven gear 52, a third meshing sleeve 53, a fourth meshing sleeve 54, a third shifting fork 55, a fourth shifting fork 56 and a spline hub; 6. a fifth wheel; 7. an axle; 8. a universal joint.

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.

The first embodiment:

as shown in fig. 1 and 2, the multi-gear five-wheel transmission mechanism of the tractor according to the present invention includes a five-wheel gearbox and a fifth wheel 6. The five-wheel gearbox comprises an input shaft 1, a reverse intermediate shaft 2, an output intermediate shaft 3, a rear output shaft 4 and a front output shaft 5. The rear end of the input shaft 1 is connected to the engine through a clutch. The fifth wheel 6 is mounted on an axle 7, which axle 7 is connected to the front output shaft 5 by a universal joint 8.

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 rear output shaft 4 is provided with a shift driving gear 44, and a reverse driven gear 41, a high driven gear 42 and a low driven gear 43 which are respectively engaged with the reverse intermediate gear 21, the high driving gear 12 and the low driving gear 13, and the shift driving gear 44 is fixedly installed on the rear output shaft 4. A first meshing sleeve 45 is arranged on one side of the reverse driven gear 41, and only a second meshing sleeve 46 is arranged between the high-gear driven gear 42 and the low-gear driven gear 43. The first engaging sleeve 45 and the second engaging sleeve 46 are respectively provided with a first shifting fork 47 and a second shifting fork 48 for controlling the front and back movement thereof. The front output shaft 5 is provided with a shift driven gear 51. The output intermediate shaft 3 is provided with a first gear shifting intermediate gear 31 and a second gear shifting intermediate gear 32 which are respectively meshed with the gear shifting driving gear 44 and the gear shifting driven gear 51.

The front end of the rear output shaft 4 and the rear end of the front output shaft 5 are connected or disconnected with each other through a third meshing sleeve 52, and a fourth meshing sleeve 53 is arranged on one side of the gear shifting driven gear 51. And the third engaging sleeve 52 and the fourth engaging sleeve 53 are respectively provided with a third shifting fork 54 and a fourth shifting fork 55 for controlling the forward and backward movement thereof. The third engaging sleeve 52 and the fourth engaging sleeve 53 are interlocked with each other. When the third engaging sleeve 52 is moved to connect the rear output shaft 4 and the front output shaft 5, the fourth engaging sleeve 53 is moved away from the shift driven gear 51; when the third sleeve 52 is moved to disconnect the rear output shaft 4 from the front output shaft 5, the fourth sleeve 53 approaches the shift driven gear 51, and the front end of the front output shaft 5 is connected to the fifth wheel 6.

Spline hubs 56 are respectively mounted on the front end of the rear output shaft 4 and the rear end of the front output shaft 5. When the third engaging sleeve 52 moves backward to the spline hub 56 at the front end of the rear output shaft 4, a part of the third engaging sleeve is still engaged with the spline hub 56 at the rear end of the front output shaft 5, that is, when the third engaging sleeve 52 moves backward, the rear output shaft 4 and the front output shaft 5 are connected; when the third sleeve 52 moves forward to the spline hub 56 at the rear end of the front output shaft 5, the connection between the rear output shaft 4 and the front output shaft 5 is disconnected. The fourth engaging sleeve 53 is installed at the rear side of the shift driven gear 51, and when the fourth engaging sleeve 53 moves backward, the shift driven gear 51 idles on the front output shaft 5; when the fourth engaging sleeve 53 moves forward, the front output shaft 5 rotates together with the shift driven gear 51.

Second embodiment:

in the second embodiment, the structure is substantially the same as that of the first embodiment except that the third sleeve 52, the spline hub 56, and the fourth sleeve 53 are mounted in different positions and in different manners. The differences are as follows: as shown in fig. 3, spline hubs 56 are respectively installed at the front end of the rear output shaft 4 and the rear end of the front output shaft 5, when the third engaging sleeve 52 moves backward to the spline hub 56 at the front end of the rear output shaft 4, the rear output shaft 4 and the front output shaft 5 are disconnected, and when the third engaging sleeve 52 moves forward to the spline hub 56 at the rear end of the front output shaft 5, a part of the third engaging sleeve is still engaged with the spline hub 56 at the front end of the rear output shaft 4, that is, when the third engaging sleeve 52 moves forward, the rear output shaft 4 and the front output shaft 5 are connected. The fourth sleeve 53 is mounted on the front side of the shift driven gear 51.

The power of the tractor engine is transmitted to the input shaft 1 of the five-wheel gearbox through the clutch, the high-gear driven gear 42 and the low-gear driven gear 43 are driven to rotate through the rotation of the high-gear driving gear 12 and the low-gear driving gear 13 on the input shaft 1, then the rear output shaft 4 is driven to rotate, and the second shifting fork 48 controls the second meshing sleeve 46 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 41 to rotate, and the first shifting fork 47 controls the first meshing sleeve 45 to move back and forth to control the gear engagement or gear picking of the reverse gear. The shift driving gear 44 is fixedly mounted on the rear output shaft 4 so that it always rotates in unison with the rear output shaft 4, and the shift driving gear transmits the power of the rear output shaft 4 to the shift driven gear 51 via the first shift intermediate gear 31 and the second shift intermediate gear 32.

When the third shifting fork 54 controls the third meshing sleeve 52 to move backwards, the front output shaft 5 and the rear output shaft 4 are in a connected state; at the same time, the fourth shift fork 55 controls the fourth engaging sleeve 53 to move backward, so that the shift driven gear 51 idles on the front output shaft 5, that is, the front output shaft 5 outputs the power transmitted from the rear output shaft 4, and at this time, the first gear, the second gear or the first reverse gear can be output. When the third shifting fork 54 controls the third meshing sleeve 52 to move forwards, the front output shaft 5 is disconnected with the rear output shaft 4; meanwhile, the fourth shifting fork 55 controls the fourth engaging sleeve 53 to move forward, so that the front output shaft 5 rotates with the shift driven gear 51, that is, the front output shaft 5 outputs the power transmitted by the shift driven gear 51, and at this time, the third gear, the fourth gear or the second reverse gear can be output. Therefore, the fifth wheel 6 of the invention can output four forward gears of first gear, second gear, third gear and fourth gear and two reverse gears of first reverse gear and second reverse gear, which are six different gears, and can meet the requirements of the fifth wheel 6 of the tractor on different gears when turning.

The front end of the front output shaft 5 is connected to an axle 7 provided with a fifth wheel 6 through a universal joint 8, and the fifth wheel 6 can ascend or descend around the universal joint 8 under the action of a lifting device.

In the second embodiment, the structure is substantially the same as that of the first embodiment except that the third sleeve 52, the spline hub 56, and the fourth sleeve 53 are mounted in different positions and in different manners. The differences are as follows: as shown in fig. 3, the front end of the rear output shaft 4 and the rear end of the front output shaft 5 are respectively provided with a spline hub 56, when the third engaging sleeve 52 moves backwards to the spline hub 56 at the front end of the rear output shaft 4, it is entirely positioned on the spline hub 56 at the front end of the rear output shaft 4, and the rear output shaft 4 and the front output shaft 5 are disconnected; when the third sleeve 52 moves forward to the spline hub 56 at the rear end of the front output shaft 5, a part of the third sleeve is still engaged with the spline hub 56 at the front end of the rear output shaft 4, that is, the third sleeve 52 moves forward to connect the rear output shaft 4 and the front output shaft 5. The fourth engaging sleeve 53 is installed on the front side of the shift driven gear 51, and when the fourth engaging sleeve 53 moves backwards, the front output shaft 5 rotates along with the shift driven gear 51; when the fourth sleeve 53 moves forward, the shift driven gear 51 idles on the front output shaft 5.

From the foregoing, the second embodiment differs from the embodiment of the first embodiment only in the shift output mode: when the third shifting fork 54 controls the third meshing sleeve 52 to move forwards, the front output shaft 5 and the rear output shaft 4 are in a connected state; at the same time, the fourth fork 55 controls the fourth sleeve 53 to move forward, so that the shift driven gear 51 idles on the front output shaft 5. That is, the front output shaft 5 outputs the power transmitted by the rear output shaft 4, and at this time, the first gear, the second gear or the first reverse gear can be output. When the third shifting fork 54 controls the third meshing sleeve 52 to move backwards, the front output shaft 5 is disconnected from the rear output shaft 4; at the same time, the fourth shifting fork 55 controls the fourth engaging sleeve 53 to move backwards, so that the front output shaft 5 rotates along with the gear shifting driven gear 51. That is, the front output shaft 5 outputs power transmitted by the variable driven gear, and at this time, third gear, fourth gear, or second reverse gear can be output. Therefore, the fifth wheel 6 of the second embodiment can also output six different forward gears of first gear, second gear, third gear and fourth gear, and two reverse gears of first reverse gear and second reverse gear, and can meet the requirements of the tractor for different gears when the fifth wheel 6 turns.

In the two embodiments, when the third fork 54 controls the third engaging sleeve 52 to move backwards, the fourth fork 55 also controls the fourth engaging sleeve 53 to move backwards; when the third fork 54 controls the third engaging sleeve 52 to move forward, the fourth fork 55 also controls the fourth engaging sleeve 53 to move forward. Therefore, for convenience and safety, a connecting device (not shown) for connecting the third fork 54 and the fourth fork 55 to each other is provided, and the forward or backward movement of the third sleeve 52 and the fourth sleeve 53 can be simultaneously performed by only moving the third fork 54 or the fourth fork 55 or by only moving the connecting device (not shown). Simple, convenient, safe and reliable.

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.