JPH056743Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a pulling device for a reaping harvester, and more specifically, to each of a plurality of pulling devices provided in a reaping harvester for multiple row cutting. This invention relates to an improvement in a transmission path for transmitting power from a horizontal drive shaft disposed at the upper part of these lifting devices.

[Conventional technology]

Conventionally, a reaping/harvesting machine having a transmission path configured as described above has a plurality of pulling devices 3 provided in a pre-processing section of a combine harvester, for example, as shown in FIG.
In addition to disposing a horizontal drive shaft 12 on the upper part of each, the pulling device 3... has an input shaft 3a protruding from the upper part of each toward the back side, and a transmission shaft 15 provided downward from the drive shaft 12. , each axis Q′,
They are interlocked and connected via a bevel gear mechanism 16 with the angle formed by R' set to 90 degrees.

[Problem that the invention attempts to solve]

In general, it is desirable to reduce the vertical dimension of a lifting device installed in a combine harvester or the like to lower the upper end level in order to widen the front field of view during work and to downsize the vehicle body. However, in a configuration in which the horizontal drive shaft 12 is disposed over the top of each of the lifting devices 3, as shown in FIG. 4, it is necessary to lower the upper end level of the lifting devices 3. Even so, it is impossible to reduce the contact between the raised tip of the grain culm K and the drive shaft 12 to a level that can be avoided, so there is room for improvement.

An object of the present invention is to obtain a configuration in which the upper end level of the lifting device can be lowered as much as possible without significantly modifying the transmission system for the lifting device.

[Means for solving problems]

The feature of this invention is that the angle formed by the axis of the rearwardly protruding input shaft connected to the upper drive sprocket and the axis of the transmission shaft that transmits power to the input shaft from above via a bevel gear mechanism. is set to be smaller than 90 degrees when viewed from the side of the aircraft, and the bevel gear mechanism is disposed on the rear side of the lifting device, and its functions and effects are as follows.

[Effect]

When the above characteristics are configured as shown in FIGS. 1 and 2, for example, the drive shaft 1
2 will be displaced forward with respect to the vehicle body A. Therefore, as shown in the same figure, the levels of the conventional drive shaft center 12 and the drive shaft center 12 of the present invention are set to be approximately equal, and the grain culm When the raising paths of K are compared, the level of the upper limit feed locus S ₁ of the route with the configuration of the present invention can be made higher than the upper limit feed locus S _p of the conventional route.

This is based on the technology of avoiding interference between the tip of the grain culm and the case of the drive shaft 12 to prevent grain from being shed during lifting, and the raising path can be changed only by deviation of the drive shaft center 12. This allows the upper limit feed locus to be increased.

[Effect of idea]

Therefore, by a relatively simple modification of changing the angle of the transmission system with respect to the lifting device, a configuration can be obtained in which the upper end level of the pulling device can be lowered to a level that was previously prevented by the transmission system. It was done.

In particular, in the present invention, in a combine harvester that is equipped with a conveyance system that sends the harvested grain culm to a threshing device installed at a relatively high position, the conveyance system lifts the harvested grain culm at a steep angle. Even in this case, contact between the transmission system for the pulling device and the harvested grain culm can be easily avoided, so it is also possible to shorten the longitudinal length of the combine by configuring the conveyance path in this way.

〔Example〕

Hereinafter, embodiments of the present invention will be described based on the drawings.

As shown in FIG.
A hydraulic cylinder 2 is provided between the vehicle body A and the pre-processing section B to swing up and down the pre-processing section B, and the hydraulic cylinder 2 is connected to the vehicle body A and the pre-processing section B so as to be swingable therearound, thereby configuring a combine harvester as an example of a reaping harvester.

As shown in the same figure and FIG.
are five lifting devices 3 arranged in parallel in the left and right direction...
a clipper-type reaping device 4 for cutting the base of the grain culm;
An auxiliary conveyance device 5 consisting of a rubber belt with protrusions, a pucker 6 that scrapes the stock of the harvested grain culm, and a conveyance device 7 that sends the harvested grain culm from the auxiliary conveyance device 5 to the threshing device 1.
A driver's seat 8 is provided on the right side of the front end of the vehicle body A.

The combine harvester is equipped with five lifting devices 3 in order to make the field of view from the driver's seat 8 as wide as possible.
...The upper end level of each is lowered, and the transmission system for these pulling devices 3 is constructed so as not to come into contact with the tip of the grain culm.

That is, as shown in FIGS. 1 to 3, the pre-processing section B includes the vehicle body
The vehicle has a cylindrical frame 9 connected to the vehicle body A, and a transmission shaft (not shown) for transmitting power from the vehicle body A is installed inside the frame 9.

Further, the power from the transmission shaft installed in the frame 9 is transmitted from the upper side of the pulling device 3 through the transmission shaft 11 installed in the transmission case 10 on the left side of the vehicle body. The power is transmitted to the horizontally arranged drive shaft 12 via a bevel gear mechanism 13, and furthermore, the power from this drive shaft 12 is transmitted to five transmission shafts 15 arranged downward via five bevel gear mechanisms 14... ..., and the input shafts 3a... projecting rearward from the drive sprockets 3S... installed in the upper part of the respective lifting devices 3...
These input shafts are connected to each other via bevel gears 16...
The transmission system is configured so that it is transmitted to Sa...

The position of the drive shaft 12 is shifted forward by setting the angle θ formed by the axis Q of the input shaft 3a and the axis R of the transmission shaft 15 to be smaller than 90 degrees when viewed from the side of the aircraft. This is intended to avoid contact between the case 17 housing the drive shaft 12 and the tip of the grain culm K.

[Another example]

In addition to the above-described embodiments of the present invention, the present invention may be applied to, for example, a binder for multi-row mowing.

Incidentally, although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of drawings]

The drawings show an embodiment of the pulling device for a reaping and harvesting machine according to the present invention, and FIG. 1 is a side view showing the arrangement of the input system of the pulling device, and FIG. 2 is a side view of the front part of the combine. , FIG. 3 is a schematic view showing a transmission system for the lifting device, and FIG. 4 is a side view showing the arrangement of the input system of the conventional lifting device. 3...Lifting device, 3a...Input shaft, 3S...
Drive sprocket, 15...Transmission shaft, 16...Bevel gear, Q...Axis of input shaft, R...Axis of transmission shaft.

Claims (1)

[Scope of utility model registration request] It is formed by an axis Q of an input shaft 3a in a rearwardly projecting state connected to the upper drive sprocket 3s, and an axis R of a transmission shaft 15 that transmits power from above to the input shaft 3a via a bevel gear mechanism 16. A lifting device for a reaping harvester, in which the angle is set to be smaller than 90 degrees when viewed from the side of the machine, and the bevel gear mechanism 16 is disposed on the rear side of the lifting device 3.