JPS602747Y2 - Harvester grain culm weeding device - Google Patents

Description

[Detailed description of the invention] This invention is a self-propelled harvester that splits the husks planted in the field while removing tangles from the tips, and sends them through the culm lifting mechanism to the reaping and delivery section. This relates to a culm weeding device for weeding, in particular, a weeding device in which multiple tines of an endless chain move upward from the bottom along the forward direction of the harvester.

A chain mechanism is provided to support the weeding chain mechanism and to provide power to the weeds when separating the cut culms that enter the pulling mechanism while pulling up the culms, and the non-cut culms that do not enter the pulling mechanism. This enables transmission with a simple structure.

It is a prior art technique to provide a weeding chain mechanism in which multiple tines of an endless chain move upward from the bottom along the forward direction of the harvester at the front of the culm pulling mechanism, as in the case of Kono. 51-161326, the weeding chain mechanism in this prior art is such that the position of the lower end of the weeding chain mechanism can be adjusted in the front-rear direction with respect to the drive shaft on the rear surface of the culm lifting mechanism. Therefore, the weeding chain mechanism here can only be installed outside the culm lifting mechanism.In other words, the weeding chain mechanism can only extend the culm by its width. Since it protrudes outside of the pulling mechanism, the width of the harvester at the front of the harvester increases, and it is not possible to install a plurality of weed chain mechanisms within the width of the front of the harvester.

The present invention provides a method for mounting a plurality of weeding chain mechanisms within the width of the front body of a harvesting machine in such a way that the lower end of each of the weeding chain mechanisms can be adjusted in position in the front-rear direction.
By supporting each weeding chain mechanism at the front part of the culm pulling mechanism, it is possible to provide a plurality of weeding chain mechanisms within the body width at the front of the harvester, and at the same time, at the front of the harvester, This allows the width of the aircraft to be reduced.

Next, a drawing of an embodiment in which the present invention is applied to a combine harvester will be explained. In the figure, 1 indicates a combine machine body having running rollers 2, and a foot chain 3 is provided on the upper surface of the machine body 1. A threshing section 4 is provided, and a culm pretreatment section 7 is provided in front of the threshing section 4 via frames 5 and 6 that protrude from the top and bottom of the machine body 1.

This pre-processing section 7 includes a plurality of (four in this embodiment) culm lifting mechanisms 8 attached to the front ends of the frames 5 and 6 with their upper parts tilted backwards, and a reaping mechanism attached to the lower frame 6. It consists of a mechanism 9, a stock head conveyance mechanism 10 located above it, and two rows of top and bottom tip conveyance mechanisms 11.12. A connecting line 13 is arranged at a position inclined forward at an appropriate angle θ with respect to the field scene 14, and between the rear ends of these lines and the foot chain 3, the stock base of the cut culm is held. A vertical conveyance mechanism 15 and two rows of upper and lower rows of ear tip conveyance mechanisms 16 and 17 are mounted for feeding the tip to the foot chain 3.

The plurality of lifting mechanisms 8 are arranged as a pair and form a culm passage 18, 18 between them, while a large number of tines 19 are provided in an endless chain installed in the case so as to be able to rise and fall freely, and the tines 19 are connected to a combine harvester. The tines 19 of each pulling mechanism 8 are arranged to move upwardly in the shell culm passage 18, 18 in a direction perpendicular to the traveling direction of the
It is configured to stand up when moving through a shell culm passage 18.18 formed between a pair of pulling mechanisms, and is located at the lower front and both culm passages 18.18 of the pulling mechanisms 8, 8 on both left and right sides of the combine. The adjacent pulling mechanisms 8 between
, 8 are provided with grass branches 2G, 20° 20, which are attached to the lower frame 6, respectively.

21.21.21 is a weed cutting mechanism provided at the rear position of each of the weed cutting bodies 29, that is, in front of the non-working side of each pulling mechanism 8, which is opposite to the working side where the tines 19 move in an upright state. The weeding check 721 has a box-shaped case 22 and upper and lower sprockets 23.2 in the case 22.
Each of these weeding cheno mechanisms 21 consists of an endless chain 25 wound between two weeding chains 25, and each of these weeding cheno mechanisms 21 is such that its chines 25 are perpendicular to the tines 19 in the pulling mechanism 8, that is, parallel to the direction of movement of the combine harvester, and The lower end of the grass divider 20 is located at the rear surface of the grass divider 20.

One of the left and right outer surfaces in the machine width direction of the upper frame 5 that supports the upper part of each of the lifting mechanisms 8 (for example, the left outer surface with respect to the direction of movement of the combine harvester)
, a cenocase 26 that protrudes forward of the lifting mechanism 8, and an arm 17 that also projects forward of the lifting mechanism 8 on the other outer surface (for example, the right outer surface with respect to the direction of movement of the combine harvester). respectively arranged, and the corresponding Cheno case 2
The upper part of each weeding chino mechanism 21 is attached to the tubular body 28 installed between the tip of the weeding chino mechanism 21 and the arm 27, while the chino 25 in the case 22 of each weeding chino mechanism 21 is
By transmitting power from the transmission shaft 30 in the upper frame 5 to the shaft 29 inserted into the tubular body 28 via the bevel gear pair 31 and the chino 32 in the chino case 26, the power is transmitted upward from below as shown by arrow A in the figure. The endless chain 25 is provided with a large number of tines 33 at appropriate intervals, and the tines 33 are configured to move while protruding from the case 22 on the upper surface of the front surface of the combine. .

Then, the base ends of the cheno case 26 and the arm 27 that support the upper part of each weeding chino mechanism 21 are fastened to the upper frame 5 by bolts 34 and 35 so as to be rotatable in the vertical direction. 21, the lower end of which can be adjusted in the front and back direction with respect to the lifting mechanism 8, in other words, the angle of inclination with respect to the field scene 14 can be freely adjusted around its upper part.

In this configuration, as the combine harvester advances, the culm to be planted in the field first enters the culm passage 18 and 18 in the pulling mechanism 8 by the cutting body 20, and the culm passage 18
．． The movable tines 33 in each weed cutting mechanism 21 remove tangles from the tips of the cut and non-cut husks, and the cut culms are divided into After being raised by the weed cutting mechanism 21 and the pulling mechanism 8, it is sent to the reaping mechanism 9, the stock head conveyance mechanism 10, and the ear tip conveyance mechanisms 11 and 12.

In this case, the husks to be planted in the field are lying down, and when reaping and threshing the husks that have fallen down, the lower end of each weeding chain mechanism 21 has a lifting mechanism 8, as shown by the solid line in FIG. If the direction away from the grass, that is, the angle of inclination with respect to the field scene 14 is made gentler, weeding for the fallen culm will start at a location far from the pulling mechanism 8, and the distance to be weeded by the weeding chain mechanism 21 will be longer. Therefore, the weeding effect is high, and it is possible to reliably separate and separate the culms whose tips are significantly tangled due to lodging, and after the culm has been completely removed and separated, the pulling mechanism 8 raises the weeds to an upright state. In addition, in the case of reaping and threshing of upright culms, the tips of the upright culms are less likely to get tangled. If the direction of approaching the pulling mechanism 8, that is, the angle of inclination with respect to the field scene 14 is made steeper as shown by the chain line,
The timing of the start of weeding by the weeding chain mechanism 21 is determined by the pulling mechanism 8.
As the tip approaches the moving tines 33, the time during which it rubs against the moving tines 33 is shortened, and the frequency of culm breakage or ear breakage can be reduced.

In this way, when a plurality of weeding chain mechanisms 21 are mounted on the front part of the culm lifting mechanism 8 so that the inclination angle of each of the weeding chain mechanisms 21 can be adjusted, the present invention provides for each of the weeding chain mechanisms 21 as described above. A chain case 26 that protrudes forward from the culm lifting mechanism 8 is attached to one outer surface of the left and right outer surfaces of the upper frame 5 that supports the upper part of the lifting mechanism 8 in the width direction of the fuselage, and a chain case 26 that projects forward from the culm lifting mechanism 8 is attached to the other outer surface. Similarly, the tubular body 2 is provided with arms 27 that protrude forward from the culm lifting mechanism 8, and is mounted between the chain case 26 and the tips of the arms 27.
Each weeding chain mechanism 21 is attached to the weeding mechanism 8, and the chain case 26 and arm 27 are attached to the upper frame 5 so as to be rotatable in the vertical direction, so that each weeding chain mechanism 21 is positioned outside the pulling mechanism 8. chain case 26
Since the weeding chain mechanisms 21 can be supported by the arm 27, the structure of the supporting part for the plurality of weeding chain mechanisms 21 can be significantly simplified, and the inclination angle of each weeding chain mechanism 21 can be adjusted simultaneously. Because the grass chain mechanism 21 is located in front of the pulling mechanism 8 due to the above-described configuration,
As in the prior art, the weeding chain mechanism 21 is moved by the pulling mechanism 8.
There is no necessity to arrange the weeding chain mechanism 21 on the outside of the pulling mechanism 8, and the weeding chain mechanism 21 can be installed within the width dimension of the pulling mechanism 8. Therefore, the body width at the front of the harvesting machine can be made smaller than that of the prior art. can also be reduced.

The Josui design is such that each weeding chain mechanism 21
A shaft 29 for transmitting power to the weeding chain mechanism 2 is inserted, and power is transmitted to the shaft 29 from the combine machine body side via the chain 732 in the chain case 26.
The power transmission section to the power transmission section 1 can be built into the support mechanism, and a space for providing the power transmission section is not required, and the size can be reduced, and the culm can be prevented from wrapping around the power transmission section, and, The attachment of the sprocket to the chain 732 in the chain case 26 also has the effect of easily changing the rotational speed of each branching chain mechanism 21 by replacing the sprocket.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a side view of the front of the combine, FIG. 2 is a front view of the combine, FIG. 3 is an enlarged view of the weeding chain mechanism, and FIG. FIG. 4 is an enlarged cross-sectional view taken along IV-IV. 1... Combine harvester body, 5... Upper frame, 8... Culm lifting mechanism, 21...
・Grass splitting chain mechanism, 25...Che 7.33...
... Tines, 26 ... Chain case, 27
... Arm, 28 ... Tubular body, 29.
·····shaft.

Claims (1)

[Scope of utility model registration request] In front of the culm lifting mechanism located at the front of the harvester, multiple weeding chain mechanisms equipped with tined chains 7 that rotate vertically parallel to the direction of movement of the harvester are installed to create an impressive culm. In the weeding device, a chain case protruding forward from the culm pulling mechanism is provided on one outer surface of both left and right outer surfaces in the width direction of the machine body divided into the upper frame that supports the upper part of the culm lifting mechanism. Arms protruding forward from the culm lifting mechanism are respectively disposed on the other outer surface, and each of the weeding chain mechanisms is attached to a tubular body mounted between the chain case and the tip of the arm. Attach the chain case and arm to the upper frame so that they can rotate freely in the vertical direction,
Further, a shaft for transmitting power to each weeding chain mechanism is inserted into the tubular body, and the power is transmitted to this shaft from the body side of the harvester through a chain 7 in the chain case. The culm weeding device of the harvester.