JPH027606B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Field of Industrial Application The present invention relates to a drive device for a reaping device in a harvester that reaps and threshes grain culms.

(b) Prior art Conventionally, a threshing device with a feed chain stretched outside is mounted on one side of a machine base having a traveling device, a driving section is provided at the front of the other side, and a threshing device is installed in front of the threshing device. A reaping device and a conveying device for supplying the stock end of the reaped grain culm to the feed chain of the threshing device and the ear side to the supply port are provided, and the clipper-type cutting blade of the reaping device is attached to the reaping frame, and the reaping device It is already known that the movable blades of the blade are arranged as a pair on the left and right, and that they are interlocked and connected to the crank arms at both ends of the shaft, and that a raking ring is provided on the upper part of the left and right movable blades for raking the grain culm toward the center. It is being

(c) Problems to be Solved by the Invention Since the shaft for driving the cutting blade in the cutting blade drive device of the known harvester was disposed near the rear of the pre-processing device, the crank rod became extremely long. If the strength is not increased, when compressive force is applied, it will bend and it will be difficult to perform accurate transmission, and when the grain culm conveying device transports the harvested grain culms, especially long culms, the stock base will be attached to one crank rod. Once it got caught, the transportation posture was disturbed.

In addition, in the case where a pair of left and right scraping wheels are provided, the longitudinal drive shaft that transmits power to them is biased towards the feed chain side of the reaping frame, so the transmission case housing the drive shaft is used to scrape the grain culm. When loading or transporting the harvested grain culms, the movement of the stock base was obstructed, the grain culm posture was disturbed, and transportation jams occurred, which disrupted the grain culm supply posture to the threshing device, resulting in broken culms and ears. There were problems such as frequent cuts.

Furthermore, the reaping device must drive not only the cutting blades but also the grain culm lifting device, raking device, etc.
When a pair of left and right movable blades is used, it is necessary to have two transmission systems, and this transmission system and the transmission system of the grain culm conveying device are intertwined in a narrow space, and the grain is not properly driven while the reaping device is being accurately driven. It was difficult to secure a culm migration route.

(d) Means for solving the problems The present invention includes a threshing device with a feed chain stretched outside on one side of a machine base having a traveling device, and a driving section on the other side. , a reaping device and a grain culm conveying device are provided in front of the threshing device for supplying the stock base of the reaped grain culm to the feed chain of the threshing device and supplying the ear side to the supply port, and a clipper-type reaping device for the reaping device is provided. The blades are attached to the reaping frame, and at least the movable blades of the reaping blades are arranged as a pair of left and right blades,
A harvesting machine in which a raking ring for raking the grain culm toward the center is provided above the left and right movable blades, and a stock raking chain is arranged from above the raking wheel to below the starting end of the grain culm conveying device. In this case, a drive shaft for transmitting power to the movable blade, the raking wheel, and the stock raking chain is installed in a pretreatment transmission tube with the front and back direction, and the pretreatment transmission tube is located on the side opposite to the feed chain with respect to the reaping frame in plan view. A bevel gear case is attached to the lower end of the chain, and a shaft is extended to both sides from the bevel gear case, and the crank arms attached to both ends of this shaft are The above-mentioned problem was solved by interlockingly connecting the movable blade and supporting the scraping wheel and the drive shaft of the stock scraping chain upwardly in the bevel gear case.

(E) Function When performing reaping and threshing work, the movable blades on the left and right sides of the cutting blade are individually moved on both sides of the bevel gear case by shafts extending to both sides from the bevel gear case at the bottom of the pretreatment transmission cylinder and crank arms fixed to the shafts. is driven through a transmission system of the blade, and is located above the bevel gear case, that is, above the cutting blade transmission system, and
A scraping wheel and a stock scraping chain are driven between the left and right transmission systems using the left and right crank arms as driving parts.

Then, the stalk part of the harvested grain culm is scraped into the central part of the cutting blade by the raking wheel and the stalk scraping chain, that is, between the transmission systems of the left and right movable blades, and The combing chain is driven above the transmission system of the movable blade, and the harvested grain culm is transferred from the rear end of the stocking chain to the starting end of the grain culm conveying device, and the harvested grain culm is transferred to the starting end of the grain culm conveying device. It is transferred to the feed chain, and the panicle side is inserted into the feed port.

When the harvested grain culm is transported by the grain culm transport device, the pretreatment transmission tube is biased to the opposite side of the feed chain, and the shaft that drives the movable blade extends from the bevel gear box attached to the lower end of the pretreatment transmission tube. Since the shaft is driven by the crank mechanism, the stock end of the grain culm being transported does not collide with the pretreatment transmission cylinder and the bevel gear box, and the transporting posture of the grain culm is not disturbed.

(F) Embodiment To explain in more detail the embodiment of the present invention shown in the drawings, 1 is a threshing device mounted on one side of a combine machine base, and an operation panel is installed on the other side of the machine base in order from the front. , cockpit, grain tank, engine, etc. In addition, a grain culm conveying device 2 and a reaping device 3 are provided in front of the threshing device 1, and the reaping device 3 consists of a weeding body 4..., a grain culm pulling body 5..., a cutting blade 6, and a pair of right and left raking wheels. 7, 7, a pair of left and right ear-side raking bands 8, 8, which form a V-shape with the center at the rear and are stretched between the front and rear V pulleys 10, 10, and the front part of one raking wheel 7. The grain culm conveying device 2 is composed of a stock head clamping chain 9 wound around a sprocket attached to a shaft. The handling depth can be adjusted by moving the conveyor 11 up and down around the horizontal axis 13.

Further, the cutting blade 6 is constituted by a pair of left and right clipper blades 14a, 14b which are formed in a V-shape with the center being rearward, and these clipper blades 14a,
The inner end of the fixed blade 15 of 14b is connected to the reaping frame 16.
The movable blade 19 is attached to a bracket 17 protruding from the middle support frame 16a, and its outer end is fixed to the side frame 16b. A drive arm 20 protrudes rearward from the blade 19
The left and right movable blades 19, 19 are interlocked and connected to a shaft 24 via a transmission system consisting of a bell crank 21, a rod 22, and a crank arm 23 so that the left and right movable blades 19, 19 are reciprocated separately and in opposite directions.

The shaft 24 has a midway portion supported by a bevel gear case 24a, and extends largely toward the feed chain side of the threshing device 1 and briefly extends toward the opposite side. 24
a′, 24a″, and a horizontal shaft 13 having a pulley 25 connects bevel gears 13a, 13a, pretreatment drive shaft 26, and bevel gears 24b, 24.
b, the bevel gear case 24
a is a pretreatment transmission cylinder 2 with a pretreatment drive shaft 26 installed therein;
6a, and the pre-treated transmission cylinder 2
6a is offset to the side opposite to the feed chain of the threshing device 1 with respect to the reaping frame 16 as shown in FIG. are doing.

Further, the drive shaft 9a extending upward from the bevel gear case 24a extends upward and supports the drive shaft 9a that drives the stock scraping chain 9, and the drive shafts 9a mesh with each other. Transmission gear 9
The left and right rods 22, which drive the movable blade 19,
Reference numeral 22 is located at the lower part of the stock root conveying route as shown in FIG. 1 and on both sides as shown in FIGS. The stock removal chain 9 rotates above the rods 22, 22 as shown in FIG. 1 in a side view, and between the left and right rods 22, 22 as shown in FIG. 3 in a plan view.

27 and 28 are culm guides.

Next, to explain the operation, the threshing device 1, the traveling device, the grain culm pulling body 5, the grain culm conveying device 2, the pulley 25, etc. are driven by the engine via an appropriate transmission, and the horizontal shaft 13 is the pretreatment drive shaft. A shaft 24 driven by a shaft 26 via bevel gears 24b, 24b is driven by crank arms 23, 23 at both ends to drive left and right movable blades 19, 1 via rods 22, 22.
The drive arms 20, 20 of 9 are reciprocated left and right, and the chain 9 is moved to the bevel gear case 2.
It is driven by a drive shaft 9a above 4a.

Then, as the machine advances, the grain culm pulling body 5 raises the standing grain culms that have been parted by the weed cutting body 4, and the left and right clipper blades 14a, 14b reap the stock base.

At this time, the left and right clipper blades 14a and 14b cut both sides of the width of the machine in front of the center, and as they reach the center, they sequentially cut back in order. In other words, the crank arms 23, 23 move the reaping frame 1 to the center of the width of the machine.
The hair is scraped toward the scraping path a formed at the upper part between the rods 22, 22 that operate on both sides of the hair clipper 6, and the ear side scraping band is along the slope of the clipper blades 14a, 14b. 8 and 8, respectively, are raked diagonally toward the rear center in an orderly standing posture. Next, the grain culm that has been sent back by the stock raking chain 9 is conveyed and supplied to the threshing device 1 by the grain culm conveying device 2.
At that time, the stock part of the grain stem to be transported is connected to the bevel gear case 24a, the pretreatment transmission cylinder 26a, and the rod 2.
There is no conflict with 2.

Also, when the harvested grain culm is raked by the raking wheels 7, 7 and the ear-side raking bands 8, 8, the left and right clipper blades 1
Although mud and straw debris enters between the central end portions of the clipper blades 14a and 14b, a triangular gap 〓b is provided between the central end portions of the clipper blades 14a and 14b.
The mud and straw scraps that are stirred up along with the grain culms fall between the above areas.
It will not fall down and be scraped together with the grain culm.
In addition, although the left and right movable blades 19, 19 are driven separately, their transmission systems are located below both sides, so there is no obstruction to the movement of the stock base, and the grain culm is cleaned in an orderly manner. You can move backwards in a uniform position. Further, since the left and right movable blades 19, 19 reciprocate in opposite directions, vibrations caused by the reciprocating movement of the movable blades 19, 19 can be canceled out. When the clipper blades 14a or 14b are worn out, only one needs to be replaced.

As described above, the present invention includes a threshing device 1 on one side of which a feed chain is stretched on the outside of a machine base having a traveling device, and a driving section is provided on the front portion of the other side. At the front is a reaping device 3 and a grain culm conveying device 2 that supplies the stock base of the harvested grain culm to the feed chain of the threshing device 1 and supplies the ear side to the supply port.
, the clipper-type cutting blade 6 of the reaping device 3 is attached to the reaping frame 16, and at least the movable blades 19, 19 of the cutting blade 6 are arranged as a pair of left and right,
Scraping wheels 7, 7 for raking the grain culms toward the center are provided above the left and right movable blades 19, 19, and the raking wheels 7
In a harvester in which a stock raking chain 9 is disposed extending from above to below the starting end of the grain culm conveying device, the drive shaft 26 that transmits power to the movable blade 19, the raking wheel 7, and the stock stock raking chain 9 is moved back and forth. Pretreatment transmission cylinder 26 as a direction
a, and the pretreatment transmission cylinder 26a is deviated from the reaping frame 16 to the side opposite to the feed chain in a plan view, and is suspended down to the rear of the stock scraping chain 9, and a bevel gear case 24a is attached to the lower end of the pretreatment transmission cylinder 26a. Attachment, the shaft 24 is extended to both sides from the bevel gear case 24a, and the crank arms 23 attached to both ends of the shaft 24 are interlocked and connected to the left and right movable blades 19, 19, and the bevel gear case 24a is raked into the bevel gear case 24a. Since the drive shaft 9a of the wheel 7 and the stock raking chain 9 is supported by protruding upward, the crank arms 23, 23 are supported even though the left and right movable blades 19, 19 are driven by separate transmission systems. It operates below the end of the original raking chain 9, that is, close to the movable blade 19, so the crank rod can be shortened and the movable blade can be accurately driven even with a thin one. The left and right movable blades 19, 19 are driven on both sides of the bevel gear case 24a below, and the bevel gear case 24a of the shaft 24 to which these crank arms 23, 23 are attached is attached to the lower part of the pretreatment transmission cylinder 26a. and the raking wheel 7
In combination with raking the grain culm toward the center, the stock base of the grain culm to be raked can be raked in an orderly manner without being disturbed by the transmission system of the movable blades 19, 19. It is possible to prevent the grain culm from clogging the raking path and from greatly disturbing the posture of the grain culm.

In addition, the driving parts of the base raking chains 9, 9 are arranged at a higher position than the transmission system of the movable blade 19, and although the configuration is simple, the base raking chains 9 are driven without interfering with the transmission system. Thus, stock removal and transportation can be carried out accurately.

[Brief explanation of drawings]

The drawings show one embodiment of the invention,
Fig. 1 is a side view of the front of the combine, Fig. 2 is a plan view of the reaping section, Fig. 3 is a plan view of the reaping rake section, Fig. 4 is a perspective view of a part of the cutting blade, and Fig. 5 is a plan view of the same as above. 6...Mowing blade, 7...Rake ring, 8...Ear side raking band, 9...Stock base raking chain, 9a...Drive shaft, 1
4a, 14a... Clipper blade, 20... Drive arm, 22... Rod, 23... Crank arm,
24...Shaft, 24a...Bevel gear case, 26
a...Pre-treated transmission cylinder.

Claims (1)

[Claims] 1 A threshing device 1 with a feed chain stretched outside is mounted on one side of a machine base having a traveling device, a driving section is provided on the front part of the other side, and a reaping device 3 and a reaping device 3 are installed in front of the threshing device 1. A grain culm conveying device 2 is provided for supplying the stock end of the harvested grain culm to the feed chain of the thresher 1 and the ear side to the supply port, and the clipper-type cutting blade 6 of the reaping device 3 is attached to the reaping frame 16. At least the movable blade 1 of the cutting blade 6 is installed.
9 and 19 are a pair of left and right, and the left and right movable blades 1
Scraping wheels 7, 7 for raking the grain culms toward the center are provided on the upper parts of the culms 9, 19, and a stock raking chain 9 is provided extending from above the raking wheels 7 to below the starting end of the grain culm conveying device. In this harvester, the drive shaft 26 that transmits power to the movable blade 19, the raking wheel 7, and the stock raking chain 9 is installed in the pretreatment transmission cylinder 26a with the front and back direction, and the pretreatment transmission cylinder 26a is shown in a plan view. It is deviated to the side opposite to the feed chain with respect to the reaping frame 16, and is made to hang downward to the rear of the stock raking chain 9, and a bevel gear case 24a is attached to the lower end thereof, and the shaft 24 is extended to both sides from the bevel gear case 24a. The crank arms 23 attached to both ends of this shaft 24 are interlocked and connected to the left and right movable blades 19, 19, and the drive shafts 9a of the scraping wheels 7 and stock scraping chain 9 are connected upward to the bevel gear case 24a. A reaping drive device for a harvester, characterized in that the reaping drive device is protruded from the support.