JPS5928907Y2 - Grand power take-off device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a ground power extraction device for extracting power proportional to traveling speed in a tractor capable of four-wheel drive by extracting power from a transmission to front wheels.

Conventionally, the ground power take-off shaft has been fixed facing forward or backward, so when using two types of work equipment at the same time, such as a fertilizer spreader and a seed rooter, depending on the work equipment, There are some items that require removal from the machine and others that require two axes close to the rear, and there are cases where it is not possible to handle them sufficiently and it is difficult to perform simultaneous operations.

Therefore, the present invention provides a ground power take-off device with one side on one side.
By installing two power take-off shafts on both sides of fJ and changing the mounting of the ground power take-off device case to the front and back, the power take-off shaft can be protruded in the front-rear direction while maintaining the power take-off to the front wheels. It is also possible to
It is an object of the present invention to provide a power take-off device which is configured so that two C pieces can protrude in close proximity to each other, thereby eliminating the above-mentioned drawbacks.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the tractor 1 has front wheels 2 and rear wheels 3.
A KH engine 6 is mounted at the front of the fuselage 5, and a main mission case 7 and a sub-mission case 9 are located in the middle and rear of the fuselage 5.

Both mission cases 7.9 contain, as shown in Figure 2,
A main transmission 10, an auxiliary transmission 11, and a PTO transmission 12 each consisting of a large number of shifter gears are provided, and the rotation of the engine 6 is transferred via a clutch 13 to a differential transmission via the main transmission 10 and the auxiliary transmission 11. gear shaft 1
The power is further transmitted to the rear wheels 3 via the rear axle 16, and is also transmitted via the PTO subshaft 19 to a power take-off shaft 20 protruding from the rear of the case 9.

On the other hand, power is transmitted from the sub-transmission device 11 to the ground power extraction device 22 via a shifter gear 21 rotatably supported by the PTO sub-shaft 19.
1 can also disengage the gear 23 of the power take-off device 22 to cut off power transmission.

Further, the first power take-off shaft 25 fixed to the gear 23 is connected to a front axle 28 via a front wheel drive shaft 27 disposed in a drive case 26, and the axle 28 is connected to the front wheel 2.

- Also, as shown in detail in FIGS. 3 and 4, the gear 23 is fixed to the case 29 of the ground power take-off device 22, and the first power take-off shaft 25, which is positioned by a collar 30, is attached to one side. bearing 31 so as to protrude into
A shaft 32 protruding from both sides and constituting a second power take-off shaft 32a and a third power take-off shaft 32b is rotatably supported by a bearing 31.

A gear 33 is fixed to the shaft 32 by a collar 30 and positioned so as to always mesh with the gear 23, and the gear 33 has the same number of teeth as the gear 23.

Further, the case 29 is fixed to the lower part of the sub-transmission case 9 by a large number of bolts 35, and the bolts 35 are connected to the first power take-off shaft 25 and the second and third power take-off shafts 32a, 3.
2b are arranged at equal distances from the axis 32.

That is, even if the case 22 is installed in the opposite direction, the axes of the power take-off shafts 25, 32 are interchanged so that they are in the same position.

In the figure, 36 indicates a cap 37, a retaining ring 39, a holder 40, and an oil seal.

Since the present invention has the above configuration, the rotation of the engine 6 is controlled by the clutch 13, the main transmission 10, and the auxiliary transmission 11.
and is transmitted to the rear wheels 3 via the rear axle 16, and is branched from the sub-transmission device 11 to the shifter gear 2.
If the case 29 of the ground power take-off device 22 is fixed to the sub-transmission case 9 as shown in FIGS. 3 and 4, the rotation of the shifter gear 21 will be transmitted to the gear 23. The rotation is further transmitted from the first power take-off shaft 25 to the front wheel drive shaft 27, and the rotation that is synchronized with the rear wheels 3 is transmitted to the front wheels 2 via the front axle 28.

At the same time, the rotation of the gear 23 is transmitted to the gear 33, which rotates the second power take-off shaft 32a and the third power take-off shaft 32b, which protrude in the front-rear direction, at the same speed as the first power take-off shaft 25.

When the broken case 29 of the ground power take-off device 22 is removed from the auxiliary transmission case 9, the front and back are reversed, and the case 29 is reattached using the bolts 35, it becomes as shown in FIG.

That is, the rotation of the shifter gear 21 is transmitted to the gear 33,
The second power take-off shaft 3 projects rearward and transmits power from the third power take-off shaft 32b to the front wheel drive shaft 27.
2a rotates at the same speed.

At the same time, a first power take-off shaft 25 protrudes rearward in the vicinity of the second power take-off shaft 32a via the gear 23.
rotates at the same speed as the second and third power take-off shafts 32.

As explained above, according to the present invention, by simply attaching the case 29 of the ground power take-off device 22 in the front-rear direction, the power take-off shafts 32a and 32b can be moved in the front-rear direction while maintaining power take-off to the front wheels 2. Since it can be protruded or the extraction shafts 25 and 32a can be protruded close to the rear, it can be used with any two types of working machines with simple operation, and can be used for fertilization and seeding work. Simultaneous tasks such as these can be carried out easily.

[Brief explanation of the drawing]

FIG. 1 is an overall side view showing a tractor to which the present invention is applied, FIG. 2 is a system diagram showing its power transmission system, and FIG. 3 is a partially sectional front view showing a gland power take-off device.
FIG. 4 is a plan sectional view thereof, and FIG. 5 is a plan sectional view showing the state in which it is installed with the front and back reversed. 1...Tractor, 2...Front wheel, 3...
... Rear wheel, 10.11 ... Transmission device, 22
...Gland power take-off device, 25...
・First power take-off shaft, 29...Case, 32・
... shaft, 32a ... second power take-off shaft,
32b...Third power take-off shaft.

Claims (1)

[Scope of utility model registration request] For a four-wheel drive tractor capable of driving the front wheels via a gland power take-off device provided branching off from a transmission device for the rear wheels, a first power take-off projecting to one side of the ground power take-off device is provided. A shaft and shafts constituting the second and third power take-off shafts protruding on both sides are provided, and these shafts are connected so as to rotate at the same speed, and the case of the ground power take-off device is arranged front and rear oppositely. A ground power take-off device that is installed on the aircraft body so that the axes of each of the axes are interchanged and are in the same position even if the ground power take-off device is installed on the aircraft.