JPS5837803B2 - reaping harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a reaping harvester in which a clipper-type reaping device that reciprocates a movable cutting blade in the lateral direction is provided at the front of the machine body.
It mainly concerns small-sized reaping and harvesting machines.

As an example of the conventional technology for a cutting blade drive device used in a reaping harvester, there is a technology disclosed in Japanese Utility Model Application Publication No. 49-49031.

This is connected to the drive mechanism on the machine side, and the power is first transmitted from the tip of the main drive shaft extending toward the front of the machine to the drive shaft in the vertical position, and from this drive shaft to the pulling device or clipper type reaping device. Because the power was distributed between the two, the configuration had the following disadvantages:

Although the main drive shaft extends close to the clipper-type reaping device, the reaping device is driven through another drive shaft, resulting in a complicated structure and large power loss. The drive shaft in the vertical position located in the vertical space of the mold reaping device has been an obstacle to inspection and adjustment work of the crank mechanism for driving the cutting blade.

Furthermore, Japanese Utility Model Application Publication No. 51-10240 shows a structure in which a cylindrical frame is extended from the fuselage and a transmission shaft is installed coaxially with the frame. Since a horizontal shaft is interposed between the two, the drive structure of the clipper type reaping device is also complicated.

The present invention has been made with the above points in mind, and an object of the present invention is to rationally improve the drive structure of a clipper type reaping device and provide a reaping harvester with a simple drive structure of the reaping device.

The technical means taken by the present invention is to provide a cylindrical frame that runs along the longitudinal direction of the machine, one end of which is swingably supported on the traveling vehicle body, and the other end of which is attached to the support frame of the reaping device, which is driven toward the machine body. A transmission shaft interlocked with the mechanism is installed inside the transmission shaft, and is extended forward from the other end of the cylindrical frame at the tip of the transmission shaft, and a crank arm for driving the cutting blade is directly attached to this extended shaft portion. The movable cutting blade is driven from the rear side thereof, and the following effects are achieved.

Incidentally, the crank arm described in the present invention represents a concept including an eccentric rotating cam and the like.

According to the present invention, the distal end of the internal power transmission shaft is extended from the front end of the cylindrical frame whose rear end is pivotally supported on the traveling vehicle body, and the crank arm for driving the cutting blade is attached to this transmission shaft. Since the clipper type reaping device is directly driven by the transmission shaft (power extraction shaft) extending toward the
Compared to driving via a complicated transmission mechanism for distributing driving force provided at the tip of the transmission shaft, as is done in Japanese Patent No. 10240, the structure can be extremely simple. We have now been able to provide a reaping harvester that has little power loss and is easy to maintain and inspect.

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

The figure shows a machine body in which a threshing device 2, an engine 3, etc. are mounted on left and right crawler traveling devices 1, 1, and a stem culm pulling device 4 and a clipper-type reaping device 5 are juxtaposed in the front and back. This shows a walking type combine harvester.

As shown in FIGS. 2 and 3, the pulling device 4 engages locking claws 7 at regular intervals on the rotating chain 6.
・・・・・・・・・・・・ is attached, and this locking claw 7...
With the distal end portion of ..
. . . is configured to shift upward.

As shown in FIGS. 4 and 5, the reaping device 5 is configured to reciprocate a movable cutting blade 5b in the horizontal direction on a horizontally suspended fixed blade 5a.

Therefore, while traveling, this combine pulls up the planted stem culm with the locking claw 1 of the lifting device 4, and uses the reaping device 5 to raise the planted stem culm. While reaping the base end, the reaped stem culm is transported rearward by the cooperation of the upper ear tip locking and transporting device 9 and the lower stock head clamping and transporting device 10, and
After the grain is changed to a sideways posture at the end of the conveyance, it is delivered to the feed chain 11 of the threshing device 2, and handled and threshed while being held and conveyed by the feed chain 11.

The pulling device 4, the reaping device 5, the ear tip locking and conveying device 9, and the stock clamping and conveying device 10 have one end pivotally connected to a transmission case 12 to which the power of the engine 3 is transmitted, and It is supported via a cylindrical frame 13 to which a support frame 5A of the reaping device 5 is attached to the other end, and is configured to be raised and lowered as a whole as the cylindrical frame 13 swings up and down. There is.

Next, the drive structure of the reaping device 5 and the pulling device 4 will be explained. Inside the cylindrical frame 13 is a transmission shaft 14 that is interlocked with a gear transmission mechanism (not shown) in the mission case 12. , is installed concentrically with this frame 13 and extending toward the front of the aircraft.

A vertical shaft 15 is interlocked with the intermediate portion of the transmission shaft 14 via a bevel gear mechanism, and the lifting device 40
The input shaft 16 is interlocked and connected via a bevel gear mechanism.

Further, a crank-shaped arm 17 is fixed to a tip shaft portion 14a of the transmission shaft 14 extending further forward from the end of the cylindrical frame 13, and a crank-shaped arm 17 is fixed to the tip shaft portion 14a of the transmission shaft 14 extending further forward from the end of the cylindrical frame 13. The provided plate body 18 is formed with a vertically elongated hole 18a into which the free end of the crank-shaped arm 17 is inserted, so that as the crank arm 17 rotates, the movable cutting blade 5b is A crank mechanism 19 for reciprocating movement is configured.

In the embodiment, the lifting case 8 and the crank mechanism 19 are arranged at substantially the same position in the lateral force direction, as shown in FIG. A covering effect is exerted on the mechanism L5 to make it difficult for the stem culm to be raised and reaped to come into contact with the crank mechanism.

Furthermore, the movable cutting blade 5b of the reaping device 5 and the tip of the transmission shaft 14 are directly connected via the crank mechanism U. As described in the embodiment, if the movable cutting blade 5b is connected to the intermediate position in the lateral direction, the movable cutting blade 5b can be easily reciprocated without any difficulty.

Furthermore, in order to introduce the power from the transmission shaft 14 to the pulling device 4, as described in the embodiment, if the power is taken out from the middle part of the transmission shaft 14, for example, it can be taken out from the tip of the transmission shaft 14 where the crank mechanism 19 is installed. Compared to the above, the location where the crank mechanism 19 is installed can be maintained in a large space where other devices are not present, and inspection and adjustment of the crank mechanism 19 can be performed more easily.

[Brief explanation of the drawing]

The drawings show an embodiment of the reaping harvester according to the present invention, in which Fig. 1 is an overall side view, Fig. 2 is a schematic diagram showing the power transmission structure, Fig. 3 is a schematic plan view of the pulling reaping section, and Fig. 4 is a schematic diagram showing the power transmission structure. The figure is a vertical side view showing the drive structure of the reaping device, and FIG. 5 is a front view thereof. 4... Stem culm pulling device, 5... Reaping device, 5A... Reaping device support frame, 5b...
...Movable cutting blade, 7...Latching claw, 8...
...Lifting case, 13...Tubular frame, 1
4...Transmission shaft, 14a...Extended shaft portion, 17...Crank arm.

Claims (1)

[Scope of Claims] 1. A clipper-type reaping device 5 that reciprocates the movable cutting blade 5b in the lateral direction is mounted on a reaping/harvesting machine installed at the front of the vehicle body, and one end is attached to the vehicle body. A transmission shaft 14 is connected to a cylindrical frame 13 along the longitudinal direction of the traveling vehicle body, which is swingably supported on the other end and has a support frame 5A of the reaping device 5 attached to the other end. The distal end of the transmission shaft 14 is extended forward from the other end of the cylindrical frame 13, and the mower blade drive crank arm 17 is directly attached to the extended shaft portion 14a. A reaping harvester in which the cutting blade 5b is driven from the rear side. 2. The reaping harvester according to claim 1, wherein the movable cutting blade 5b is provided with the cutting blade driving crank arm 17 at an intermediate position in the width direction of the movable cutting blade 5b.