JPH0432914Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention spans a frame in an arch shape across the upper parts of each of a plurality of lifting devices, and
A vertically adjustable conveying device for supplying the reaped grain culm from these lifting devices to the threshing device is connected to an ear-end locking conveyance mechanism provided on the reaping frame side, a stump base conveyance chain, and a reaped grain culm from the conveyor frame. The present invention relates to a front conveyance structure for a combine harvester, which includes a rail member disposed close to a stock conveyance chain via an inverted U-shaped frame that bypasses the conveyance path upward.

[Conventional technology]

Conventionally, as described above, there is a structure in which an inverted U-shaped frame is provided on a vertically adjustable conveying device, as shown in, for example, Japanese Utility Model Application Publication No. 56-73244.

[Problem that the invention attempts to solve]

Generally, the size of the inverted U-shaped frame is set to a size that does not allow the tips of the grain to come into contact with each other even when the grain culm is long, in order not to increase the size of the conveying device.
However, when harvesting a species of rice with an extremely long culm, or when harvesting is done intentionally so that the grain is handled deeply, the tip of the harvested grain culm collides with the inverted U-shaped frame. There is room for improvement as granulation may occur.

The purpose of the present invention is to make it as difficult as possible to cause shedding even when the tip of the harvested grain culm comes into contact with the inverted U-shaped frame by rationally modifying the front conveyance structure.

[Means for solving problems]

The present invention is characterized in that in the above-mentioned transport structure, a cord from an electric device provided in the pulling device is tightened by a belt clamp made of an elastic body along the frame, and the free end of the belt clamp is tightened along the frame. The function and effect of the inverted U-shaped frame are as follows.

[Effect]

In other words, if the above characteristics are configured as shown in FIG. After being elastically tilted upward at the end portion 18a, the tip passes under the inverted U-shaped frame 12 with the tip lying down.

[Name of invention]

Therefore, by simply extending the free end of the belt clamp that originally tightens the cord to the rear, the tip of the grain culm can be gently lowered to avoid collision with the rigid inverted U-shaped frame. It became less likely that grains would break off.

〔Example〕

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

As shown in FIGS. 1 and 2, a reaping pretreatment section B is connected to the front end of a crawler traveling body A equipped with a threshing device 1 so as to be movable up and down by a hydraulic cylinder 4 to constitute a combine harvester.

The reaping pre-processing section B
A reaping frame 5 pivotally attached to the reaping frame 5, a pair of left and right pulling devices 6a and 6b provided at the front of the reaping frame 5, a clipper-type reaping device 7 for cutting the base of the planted grain culm, and a It consists of a conveying device C for feeding harvested grain culms to a feed chain 8 provided on the side of the threshing device 1. The handling depth can be adjusted by adjusting the swing.

Further, the conveyance device C includes a tip locking conveyance mechanism 9 which is provided with a large number of locking claws 9a on an endless rotating band.
, stock transfer chain 10a, and clamping rail 1
The clamping rail 10b is provided via an inverted U-shaped frame 12 which detours the harvested grain culm transport path upward from the transport device frame 11.

The combine harvester is configured to electrically detect the culm length of the grain culm and automatically adjust the handling depth based on the detection result.

That is, as shown in FIG. 3, the pipe-shaped frame 13 is extended in an arch shape over the upper parts of the pair of left and right lifting devices 6a and 6b, and the U-shaped cover 14, which is opened downward, is frame 1
3, and a contact type culm length sensor 15 is provided on the left lifting device 6b in the vertical direction.
There is one. Moreover, these sensors 15, 15, 1
The cord 16 from 5 is arranged along the pipe frame 13 and is drawn from the right side of the reaping pretreatment section B to the control box 17 of the boarding operation section D formed at the front right side of the machine body. .

The control box 17 is configured to operate, based on the detection results of the sensors 15, 15, 15, to drive a hydraulic cylinder (not shown) that swings the conveying device C up and down.

The inverted U-shaped frame 12 is manufactured to a size that does not allow the tips of long culms to come into contact with each other, so when harvesting rice, etc. with extremely long culms,
The tip of the harvested grain culm may come into collisional contact with the frame 12, causing shedding, and the combine harvester has been modified to make it difficult for such shedding to occur. That is, the pipe frame 13
In order to arrange the cord 16 along By providing the front part of the U-shaped frame 12, the harvested grain culm K is folded down at the beginning of conveyance so that the tip part is elastically directed toward the conveyance direction at the free end, and then the inverted U-shaped frame 12 is installed. 1
2 with the tip lying down, thereby avoiding collisional contact between the tip and the frame 12.

The belt clamp 18 has a sawtooth locking surface 18b formed on its inner surface, and a swinging lock piece 18c that can engage with the locking surface 18b is provided at the opening at the end. It is constructed so that it can be tightened by inserting the belt portion 18A. Further, the distal end portion of the belt portion 18A is referred to as a free end portion 18a.

[Another example]

In addition to the embodiments described above, the belt clamp 18 of the present invention may be made of a spring plate material, and the cord is not a cord for controlling the cutting depth, but a cord from an ultrasonic sensor or the like for controlling the cutting height. It's okay to be.

[Brief explanation of drawings]

The drawings show an embodiment of the front conveyance structure of a combine harvester according to the present invention, FIG. 1 is a side view showing the front conveyance structure of the combine, FIG. 2 is a plan view showing the front conveyance structure of the combine, and FIG. 3 is a belt FIG. 4 is a schematic side view showing the attached state of the clamp, and FIG. 4 is a perspective view of the belt clamp. 1... Threshing device, 5... Reaping frame, 6...
Lifting device, 9... Spear tip locking conveyance mechanism, 10a...
...Stock conveyance chain, 10b...Rail member, 1
DESCRIPTION OF SYMBOLS 1... Conveyance device frame, 12... Inverted U-shaped frame, 13... Frame, 15... Electrical equipment, 1
8... Belt-shaped clamp, 18a... Free end of the clamp.

Claims (1)

[Scope of utility model registration request] A frame 13 is extended over the upper parts of each of the plurality of lifting devices 6 in an arch shape, and a vertically adjustable conveying device is provided for supplying the harvested grain stems from these lifting devices 6 to the threshing device 1. , the ear tip locking conveyance mechanism 9 provided on the side of the reaping frame 5, the stock conveyance chain 10a, and the stock conveyance chain via the inverted U-shaped frame 12 that bypasses the harvested grain culm conveyance path upward from the conveyor frame 11. A belt clamp 18 made of an elastic material is used to guide a cord 16 from an electric device 15 provided in the lifting device 6 along the frame 13. The front conveyance structure of the combine is tightened by the belt clamp 18, and the free end 18a of the belt clamp 18 is extended rearward to be installed at the front of the inverted U-shaped frame 12.