JPH0947133A - Transmission device for reaping part in combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the practice of high-performance combine operations by attaching a raking in unit in a transmitting support cylinder for supporting and transmitting a power to a raising up device located on the medial side of a combine harvester for multiple row reaping, shortening the front and rear length of a reaping part, suppressing the overhang from a machine body and improving the front and rear weight balance of the machine body. SOLUTION: This transmission device for a reaping part in a combine harvester is obtained by supporting and transmitting a power to the upper part of a raising up device 21 located on the medial side with a transmitting and supporting cylinder 6 standing from a transmission case at the rear of a reaping blade and attaching a raking in unit S2 to the outer periphery in the intermediate part of the transmitting and supporting cylinder 6, in the combine harvester equipped with plural raising up devices 20, 21 and 22 stood in front of the reaping blade, left and right raking in conveying units, arranged at the rear of the raising up devices located on both left and right sides and formed into the V shape when viewed in a plane and capable of feeding reaped grain culms from a joining part thereof to a threshing part.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power transmission device for a mowing section in a multiple-row mowing combine, and more specifically, it is equipped with a scraping body on a power transmission support tube for supporting and transmitting a middle-side pulling device. The front-rear length is shortened, the overhang from the machine is suppressed, the front-rear weight balance of the machine is improved, and high-performance combine work can be performed, and the middle-side pulling device is supported on the upper part of the transmission support cylinder. The present invention relates to a harvesting section transmission device in a combine, which enables detachable connection of the bending transmission support cylinders so that the upper side of the scraping body can be largely released and maintenance work can be performed easily and efficiently.

[0002]

2. Description of the Related Art A combine harvester for performing multiple-row cutting of grain culms to be planted in a field, such as three or four rows, has a plurality of raising devices standing upright in front of a cutting blade and left and right raising devices. Each of the scraping carriers is arranged in a V shape in a plan view to form a confluence part of the harvested culm, and the scraping body is provided behind the middle raising device. The grain culm transporting route is configured so as to scrape the grain culm toward the scraping carrier side. In addition, such a raising device of the mowing section is designed to be driven upward by being instructed by each transmission support cylinder extending upward from a transmission case laterally provided at the rear of the cutting blade.

However, in the conventional reaping section having a V-shaped grain culm conveying path, a transmission support tube connected to the upper part of the pulling device in the middle is behind the scraper on the front side of the merging section. Since the scraping body and the merging portion cannot be brought close to each other because they are erected, as shown in FIG. 5 (B), the scraping conveying body is steeply inclined with the gap between them. As a result of being provided, the front and rear length of the mowing part becomes long, and there is a drawback that it largely overhangs forward from the machine body, which deteriorates the front-rear weight balance of the machine body.

[0004]

SUMMARY OF THE INVENTION The present invention has been made in view of the above situation and was devised to solve the conventional drawbacks, and the purpose thereof is to support and drive the middle-side pulling device. By attaching the scraping body to the transmission support cylinder and bringing the confluence part of the scraping conveying body close to the scraping body, the front-rear length of the cutting section is shortened and the overhang from the machine body is suppressed to suppress the machine body. The front-rear weight balance is improved, and high-performance combine work can be performed, and a bending transmission support tube that supports the middle-side elevating device is detachably connected to the upper portion of the transmission support tube to attach the scraper body. An object of the present invention is to provide a mowing section transmission device in a combine that can open the upper part largely and perform maintenance work easily and efficiently.

[0005]

In order to solve the above problems, a first technical means adopted by the present invention is to install a plurality of raising devices upright in front of a cutting blade, and to rear the raising devices on both left and right sides thereof. In the combine in which the left and right scraping conveyors are formed in a V shape in a plan view and the cut grain culms are fed from the confluent portion to the threshing portion, the pulling device located on the inside of the left and right pulling devices is provided. The upper part of the device is supported and driven by a transmission support cylinder rising from a transmission case at the rear of the cutting blade, and a scraping part is rotatably attached to the outer periphery of the middle part of the transmission support cylinder. According to a second technical means, the scraping body mounted on the transmission support cylinder has a scraping belt and a scraping wheel attached to upper and lower stages on a mounting wheel that is externally fitted and assembled to the transmission supporting cylinder in a divided manner. The third technical means is that the inner pulling device is And it is characterized in that it is supported via a bending transmission supporting cylinder which is removably connected to the upper portion of the transmission support sleeve having a scraping ring.

[0006]

Embodiments of the present invention will be described in detail with reference to the accompanying drawings. 1 to 5, 1
Is provided with a multi-row reaping section 2 and a threshing section 3 sequentially from the front on one side of a machine base 1b having a crawler type traveling device 1a, and a control section 4 including an operation handle 4a is provided on the other side. The harvester 2
Is a transmission case 2b provided laterally at the base of a mowing frame 2a having a grass body 2d, and a transmission support frame 2c is obliquely installed rearward and upward. The hydraulic cylinder mechanism 1 supports the movable support portion 1d so as to be tiltable, and the middle portion of the transmission support frame 2c is supported.
It is mounted and supported so that it can be moved up and down by f. And
The input pulley 1e provided on the rotation support portion 1d is arranged and supported on the mowing frame 2a through a transmission mechanism including a transmission support frame 2c and a transmission case configured in the transmission case 2b and a gear group. Article pulling device 20, 21,
22 and the pulling-up devices 20, 22 on both sides, and the scraping conveyors S1, S3 respectively arranged behind the pulling-up devices 20, 22, and the pulling-up devices 21 at the center.
The rear scraping body S2 and the cutting blade 2e supported below the scraping body S2 are driven.

The pull-up devices 20 and 22 on both sides of the pull-up device 20 and 22 have their upper ends erected from the transmission case 2b.
While being supported by f, each of the raising claws 2g is caused to move in the pulling direction by an internally mounted transmission shaft. Further, the pulling-up device 21 on the inner side is the pulling-up transmission supporting device 5
The power transmission support cylinder 6 having the bending power transmission shaft and the like therein is located close to the back of the pulling device 21 to support and transmit the upper portion of the pulling device 21 in a bent state toward the front side.

As shown in FIG. 1, the transmission support cylinder 6 includes a lower cylinder 60 having a front end portion projecting from the transmission case 2b bent upward, and a lower cylinder 60 connected to the lower cylinder 60 and inclined forward. As shown in FIG. 3, a middle cylinder 61 and a bending case 62 in which the bevel gears 6c, 6c at the ends of the transmission shafts 6a, 6b are fitted in the meshed state at the upper end thereof are supported between the upper cases 21a. The transmission support cylinder 63 is formed, and the bending transmission support cylinder 63 is provided near the back surface of the pulling device 21 in a substantially parallel manner. Further, in the middle cylinder 61, the scraping body S2 mounted on the outer periphery of the middle part thereof has the scraping conveying bodies S1, S.
It is erected so that it has the same inclination angle as 3 forward. As a result, the transmission support cylinder 6 also serves as a rotation wheel mounting shaft for the star wheel-shaped scraping wheel 5a and the scraping belt 5b, the belt pulley 5c of the scraping belt 5b, or a mounting frame for the culm guide 5d. Behind the scraping body S2, it is designed to be widely opened without interposing the transmission support cylinder 6 for transmitting the inner pulling device 21 and the like unlike the conventional one.

Therefore, the confluence portion of the cut culms formed at the end portions of the stocker chains 7a, 7b and the spike-side tainchien 7c, 7d of the scraping carriers S1, S3 arranged in a V-shape in plan view. G can be brought as close to the scraping body S2 as possible. Reference numerals 7e and 7f denote the above-mentioned take-in carriers S1 and S.
It is a drive sprocket that drives 3 in the transport direction, and is pivotally supported by the transmission case 2b. As a result, FIG.
As shown in (A), the conveying angles of the scraping conveyors S1 and S3 can be made gentler than those shown in (B) of the figure, and the start ends of the feed chains 3a of the merging section G and the threshing section 3 can be made. Similarly, the handling depth chain 8 installed between the parts can also be provided with a gentle inclination, and the front-rear length L1 of the mowing part 2 can be made shorter than L2 in the same figure (B) to suppress overhang from the machine body. In addition to downsizing the reaping section 2 with a simple structure, the front-rear weight balance of the machine body is improved to enable high-performance combine work.

Further, since the bending case 62 of the bending transmission support cylinder 63 is detachably connected to the flange 61a formed on the upper portion of the middle cylinder 61 via the mounting bolt 61b, the pulling device 21 and the like are removed. When performing maintenance work such as inspection and repair, the pulling device 21 is bent to the transmission shaft 6
3 and 3 are integrally removed to largely open the upper part of the scraping body S2 so that the above work can be easily performed.

On the other hand, the handling depth chain 8 has the stock side chain 8a and the spike side chain 8b arranged in the upper and lower stages, the end portion of which is rotatably supported by the rotation support portion 1d, and the front end side is culled. According to the above, by vertically moving the holding position variably and carrying it by pinching, the grain culm is transferred to the feed chain 3a with an appropriate handling depth, and a good threshing operation can be performed.

As shown in FIGS. 3 and 4, the concrete structure of the scraping member S2 is such that mounting brackets 65, 6 are mounted on the outer periphery of the middle portion of the middle cylinder 61 with appropriate vertical intervals with mounting screws 64.
5, the mounting wheel 50 is rotatably supported between the mounting brackets 65, 65, and the belt pulley 5c of the scraping belt 5b is attached to and detached from the upper end of the mounting wheel 50 with the mounting screw 5e. Mounting wheel 50
Is equipped with a scraping wheel 5a at its lower end. Then, by engaging the star wheel-shaped scraping wheel 7 rotatably driven at the front end of the scraping carrier S1 with the scraping wheel 5a,
The scraping body S2 is driven to rotate. The drive pulley 5f that stretches the front of the take-in belt 5b is pivotally supported by a mounting arm 5g extending from a mounting bracket 65.

The mounting ring 50 is molded from a wear-resistant plastic material so as to have a silent metal structure, and is formed into two left and right semicircular parts so that it can be attached to and detached from the outer periphery of the middle cylinder 61. It is possible to easily assemble by externally fitting and by fastening the take-in belt 5b and the take-in wheel 5a to the attaching holes 50a, 50a ... . Further, the take-in belt pulley 5c mounted on the mounting wheel 50
And the mounting hole diameter of the scraping wheel 5a is the same as the flange 6 of the middle cylinder 61.
By forming the outer diameter of 1a and the mounting bracket 65 and the like to be larger, the raising device 21 and the bending transmission support cylinder 6 are formed.
In the state where 3 is integrally removed, the take-in wheel 5a and the take-in belt pulley 5c can be easily inserted and removed from above the middle cylinder 61 so that the disassembling and attaching work can be easily performed. . Further, the attachment wheel 50, which is divided into two left and right semicircular shapes, has a joint surface that is a slope that recedes with respect to the rotation direction R, so that the attachment wheel 50 is accurately joined and winding of weeds, straw, etc. is prevented. I am trying.

In the above configuration, the combine 1 is now
When invading the group of planted culms, it is divided by the vegetation body 2d,
The two-row planted culm that has been raised by the raising devices 20, 21 is
The stock root side is cut by the cutting blade 2e, scraped by the scraping wheel 7 and the scraping body S2 that are paired in a pair on the left and right, and fed backward by the scraping carrier S1 and raised by the pulling device 22. The planting culm for one row thus cut is also cut at the stocker side by the cutting blade 2e and fed backward by the scraping carrier S3, and both carriers S1, S
Depth chain 8 to handle the harvested culm that was merged at the terminating junction G of 3
And is fed to the feed chain 3a via the feed chain 3 and fed to the threshing unit 3 at an appropriate handling depth for threshing.

By the way, in the series of combine operations as described above, the pulling device 21 on the inner side is bent by the bending transmission support cylinder 63.
While being smoothly transmitted by the transmission support cylinder 5 having the above-mentioned structure, the scraping wheel 5a and the scraping belt 5b which are simply assembled to the transmission support cylinder 6 accurately scrape the harvested culm on the middle side. Feed backwards. As a result, since the grain culm conveying path can be arranged so that the confluence part G is as close as possible to the scraping body S2, the front-rear length of the mowing part can be shortened, and the mowing part can be overrun. It prevents hangs and improves the weight balance between the front and rear of the machine, enabling high-performance combine work.

[0016]

As is apparent from the above description, according to the present invention, the scraping body is directly attached to the transmission support cylinder for supporting and transmitting the inner pulling device, so that the transmission support cylinder is hindered. It is possible to smoothly scrape the grain culm without any need, and the confluence part formed by the scraping conveyors on both sides can be provided close to the scraping body side, and the front and rear length of the reaping part can be shortened. It is possible to perform high-performance combine work by suppressing the overhang from and improving the front-rear weight balance of the machine body. Further, by dividing the mounting ring into two parts, the scraping wheel and the scraping belt can be easily assembled to the transmission support cylinder via the mounting ring, and the bending transmission support coupled to the upper part of the transmission support cylinder is provided. By supporting the middle-side pulling device with the barrel detachable, the bending transmission support cylinder can be integrally removed together with the pulling device, and the upper part of the scraping body can be largely released to facilitate maintenance work. And can be done efficiently.

[Brief description of drawings]

FIG. 1 is a side view of a combine harvester.

FIG. 2 is a plan view of FIG.

FIG. 3 is a side sectional view showing a main part of the pulling transmission.

FIG. 4 is a plan view of the mounting wheel.

FIG. 5A is a transport path diagram of the reaping section of the present invention, and FIG. 5B is a transport path diagram of a conventional reaping section.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 combine 2 mowing part 2b transmission case 20, 21, 22 raising device 3 threshing part 5 raising transmission support device 5a scraping wheel 5b scraping belt 6 transmission support cylinder 60 lower cylinder 61 middle cylinder 62 bending case 63 bending transmission support cylinder S1 , S3 scraping carrier S2 scraping body G confluence part

Claims (3)

[Claims] 1. A plurality of raising devices are installed upright in front of the cutting blade,
In the combine for feeding the cut culms to the threshing part from the confluence part, the left and right scraping conveyors arranged behind the pulling devices on both the left and right sides are formed in a V shape in plan view. The upper part of the pulling device located on the inner side of the pulling device is supported and driven by a transmission support cylinder rising from the transmission case at the rear of the cutting blade, and a scraper is rotatably mounted on the outer periphery of the middle part of the transmission support cylinder. A harvesting unit transmission device in a combine characterized by the above. 2. A scraping body mounted on a transmission support cylinder is configured by attaching a scraping belt and a scraping wheel to upper and lower stages on a mounting wheel that is externally fitted and assembled to the transmission support cylinder in a split shape. The reaper section transmission device in a combine according to claim 1, wherein: 3. The medium-side pulling device is supported via a bending transmission support cylinder detachably connected to an upper portion of the transmission support cylinder having a scraping wheel. Mowing unit transmission in combine harvester.