JP2000092955A - Reaping part for combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve an operation efficiency by simply and rapidly carrying out the release operation of grain culm clogging in the vicinity of a transportation confluence position of reaped grain culm at a reaping part. SOLUTION: Two sets of nipping and transporting mechanisms 6 for nipping and transporting reaped grain culms are opposingly arranged so as to show a truncated chevron shape opening forward when viewed in a plane and installed behind a raising apparatus 1. A longitudinally transporting apparatus for joining and sending reaped grain culms transported by these right and left nipping and transporting mechanisms 6 to a threshing apparatus is laid. A nipping rail 6b is attached to a frame member 13 whose upper end part is fixed to the top of a raising apparatus frame 1A and whose lower end part to a separating lever 17 in the vicinity of a reaping apparatus by bolts respectively. The frame member 13 can be rocked forward around an upper bolt 16 when total three bolts 16, 20 and 20 of one upper bolt and two lower bolts are loosened. The nipping rail 6b can be retreated and moved from a transporting chain 6a.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reaping section of a combine having three or more reaping lines.
TECHNICAL FIELD The present invention relates to a technique that enables simple and quick clogging removal operation when a grain clogging conveyance clogging occurs in a cutting section.

[0002]

2. Description of the Related Art A harvesting section of a combine is provided with a grain culm conveying device that joins the harvested grain culms, aligns the grain culm in a line, and then supplies the grain culm to a threshing apparatus.
For those with more than two strips, the grain transported in the sub-transportation system starting from the rear side of the left-end raising device to the middle of the main transport system placed from the rear of the right-side raising device to the start end of the feed chain. It has a structure for joining culms, a so-called y-shaped transport path in a plan view.

[0003] For example, in Japanese Utility Model Laid-Open No. 5-39240, a grain culm is sandwiched between a main transport system and a sub-transport system between left and right sides of a main transport system and a sub-transport system. In addition, the holding rails are provided on the left and right sides, and the grain stalks cut by the middle left and right strips are joined to the starting end portions of the holding rails. In other words, the combined grain culm of the right two rows and the combined grain culm of the left two rows are further joined in the main transport system at the end of the sub-transport system, so that the four rows of cut grain culms are aligned in a single row in a threshing apparatus. Transported to

[0004]

As described above, in a combine having three or more strips, it is necessary to convey the culm twice or more. Therefore, depending on the volume of the culm, the conveyed portion after confluence, particularly There was a tendency for clogging to occur easily at the junction of the main transfer system and the sub transfer system. If the culm is clogged at the place where it is forcibly joined and conveyed, it will be in a state of being firmly jammed and it will take time to recover, so as shown in the above-mentioned publication, the holding rail is In some cases, a countermeasure is made by performing a backward displacement with the support device included.

[0005] However, as described above, since the holding device for the holding rail is located at a position where it is difficult to operate a finger that has entered the inside of the reaping portion, the operability is not improved in the clogging release structure disclosed in the above publication. However, the number of parts is large and there is room for improvement in terms of cost. SUMMARY OF THE INVENTION An object of the present invention is to improve the work efficiency by enabling easy and quick release of a clogged cereal culm near a junction.

[0006]

[Means for Solving the Problems] [Constitution] In the first invention, two sets of a pinching and conveying mechanism for pinching and transporting a cut culm by a conveying chain and a pinching rail are formed by a front opening C-shape in plan view. It is arranged so as to be opposed to each other so as to assume a shape and provided on the rear side of the raising device, and the harvested grain culm conveyed by these left and right sandwiching conveyance mechanisms is merged and then conveyed toward the threshing device. In the harvesting section of the combine, the holding rail is attached to a frame member whose upper end is located near the upper portion of the raising device and whose lower end is located near the harvesting device, and the frame member is located on the upper side thereof. It is characterized in that it is configured to be able to swing forward about the upper support portion to the reaping frame.

According to a second aspect of the present invention, in the first aspect, a lower support portion of the lower side of the frame member to the cutting frame is divided into left and right bolts and holes through which the bolts pass, to the frame member and the cutting frame. In addition to being arranged and configured, the hole is formed in a long hole that allows the frame member to swing forward around the upper support portion.

According to the structure of the first aspect, the upper end of the frame member to which the holding rail is attached is supported on the cutting frame near the upper part of the raising device and the lower end near the cutting device. In addition, since the frame member is configured to be capable of swinging forward around the upper support portion, when clogging of the grain culm occurs at an intermediate portion of the nipping and transporting mechanism or at a junction of the left and right nipping and transporting mechanisms, By swinging the member forward and moving the holding rail away from the transport chain to increase the space, the clogging release operation can be performed.

The frame member is raised from the vicinity of the mowing device and has a large vertical length over the upper portion of the device. Therefore, to make it swingable, the frame member is provided at the upper end and the lower end of the frame member, that is, at the grain. Since the operation is added to a position outside the clogged portion of the culm, the releasing operation is easier than in the related art in which the releasing operation is required at the clogged portion.

According to the second aspect of the present invention, the lower supporting portion of the frame member to which the holding rail is attached is attached to the cutting frame by the bolt and the long hole which allow the frame member to swing forward around the upper supporting portion. Since the fastening means is used, the holding rail can be moved away from the transport chain by a simple operation such as slightly loosening the bolt. Since this means does not completely remove the lower support portion, it can be easily restored to its original state without becoming impossible to reassemble.

[Effects] In the combine according to the first and second aspects, the holding rail is attached to the large frame member by swinging forward and backward to release the holding rail, so that the holding rail is prevented from being clogged with the grain culm. Can be operated, and the clogging release operation can be provided easily and quickly, which contributes to the improvement of work efficiency. still,
The present reaping section is suitable for a combine having three or more reaping target rows, but can also be applied to a two-row combine.

The mowing section according to the second aspect has the advantage that both the operation of moving the frame member and the operation of returning the frame member to the original state can be performed simply and reliably.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a raising device 1 provided with a large number of locking claws 1 a for causing a grain culm in a field, and a stem of the grain culm from the raising device 1 is locked and rearward. A locking and conveying belt 2 with a projection to be fed, and a scraping rotator 3 arranged coaxially with a rear wheel body of the locking and conveying belt 2
And a clipper-type reaper 12 for cutting the stem of the grain culm
And the cut culm is fed to the feed chain 5 of the threshing device 4.
And a vertical transport device A for feeding the combined harvester.

The vertical transport device A includes a main transport system extending from the rear side of the right elevating device 1 toward the start end of the feed chain 5 and a main transport system extending from the rear side of the left elevating device 1 to the main transport system. Threshing device 4 by changing the clamping position of the sub-transportation system erected over the middle part and the harvested grain culm sent by the main transportation system 4
Depth adjusting mechanism 10 for setting the handling depth of the stalk, and an auxiliary transport mechanism that acts on an intermediate portion of the cereal stem from the handling depth adjustment mechanism 10 in the grain direction to send the stalk to the feed chain 5. 11
It is comprised including.

The main transfer system is provided with a main stock transfer mechanism 6 disposed on the right side so as to pinch and transport the stock of the harvested grain culm, and an upper position along the transfer direction of the main stock pinch transfer mechanism 6. And a main locking and transporting mechanism 7 for locking and transporting the cut side of the harvested grain culm. And a sub-type for holding and transporting the front end side of the harvested grain culm arranged at the upper position along the conveying direction of the sub-type original holding and conveying mechanism 8. Locking transport mechanism 9
It is composed of

The main stock holding and conveying mechanism 6, the subsidiary stock holding and conveying mechanism 8, the handling depth adjusting mechanism 10 and the auxiliary conveying mechanism 11 are each provided with a conveying chain 6a, 8a, 10a, 11a with a projection.
Rails 6b, 8b, 10b, 11 urged by springs
b. In other words, the harvested grain culms of the two left lines are merged and transported by the sub-transport system, and the harvested grain culms of the right two lines are merged and transported by the main transport system. After being merged in the transport system, the transport is carried to the threshing device 4.

As shown in FIG. 3 and FIG. 4, the locking and conveying belts 2, 2 and the squeezing rotating bodies 3, 3 for the left and right central two lines, and the main and sub stock former holding and conveying mechanisms 6, 8 respectively. Rail 6b,
An intermediate frame (an example of a frame member) 13 for supporting the upper frame 8b and the lower frame 8 near the upper portion of the raising device 1 and the lower portion near the mowing device 12 is provided. 14 is supported.
The intermediate frame 13 is configured to be swingable forward about the upper support portion of the cutting frame 14 on the upper side thereof.

That is, the intermediate frame 13 is provided with support devices B, B for the holding rails 6b, 8b,
And the like, and a support pipe 13B rising upward from the frame body 13A. The upper end of the support pipe 13B is fixed to the upper bracket 15 fixed to the back surface of the raising frame 1A with the left and right support bolts 16 and the lower bracket 18 fixed to the weeding rod 17 at the left and right center. Then, the stay 19 fixed to the frame main body 13A is fixed with the two mounting bolts 20 and 20, so that the intermediate frame 13 is fixed.
Is supported by the mowing frame 14.

The two mounting bolts 20 and 20 are arranged in a horizontal direction, and two bolt insertion holes 21 and 21 formed in the lower bracket 18 are respectively supported by support bolts 16 fixed to the upper bracket 15. It is set as an arc-shaped long hole centered at. Therefore, by loosening these three bolts 16, 20, 20, the holding rail 6
b, 8b, locking conveyance belts 2, 2, squeezing rotating bodies 3, 3
The intermediate frame 13 integrally provided with is capable of swinging forward with respect to the support bolt 16 as shown by a virtual line in FIG.

Therefore, in the case where the grain stalk is clogged at the main stock holding and conveying mechanism 6 and the subsidiary stock holding and conveying mechanism 8 or at the confluence of the two, the intermediate frame 13 is released forward by the bolt operation described above. By moving the space, the space of the nipping and conveying path can be expanded, and the clogging release operation can be performed. Since all three bolts 16, 20, and 20 need not be removed but only loosened, the intermediate frame 13 can be easily returned to the original working position by an operation of pushing the bolt backward.

In the embodiment described above, the reaping section for four rows, the main transport system and the sub-transport system have a substantially y-shape in plan view. The subsidiary stock holding and conveying mechanism 8 includes a structure that exhibits a front opening C-shape in plan view.

[Another Embodiment] The present invention may be applied to a three-row mowing section provided with a holding rail of the main stock holding and conveying mechanism 6 or the subsidiary stock holding and conveying mechanism 8. In addition, the present invention is applied to a case in which the left and right holding and conveying mechanisms are arranged in a front opening C-shape toward the confluence point even if the model is a two-row cutting type, in order to release the holding rail for releasing the jam. Is also possible.

[Brief description of the drawings]

FIG. 1 is a side view of the front of the combine.

FIG. 2 is a plan view showing a cereal culm transport system of a cutting unit.

FIG. 3 is a plan view showing a structure near an intermediate frame.

FIG. 4 is a side view showing a support structure of the intermediate frame.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Raising device 4 Threshing device 6a, 8a Transport chain 6b, 8b Nipping rail 12 Cutting device 13 Frame member 14 Cutting frame 20 Bolt 21 hole

Claims (2)

[Claims] 1. A raising device in which two sets of clamping transport mechanisms for clamping and transporting a cut culm by a transport chain and a clamping rail are opposed to each other so as to have a front-opening C-shape in plan view. Provided on the rear side, a harvesting unit of a combine configured to convey the harvested grain culm conveyed by these left and right clamping conveyance mechanisms toward a threshing device, and wherein the clamping rail is An upper end near the upper portion of the raising device, and a lower end near the reaping device, each of which is attached to a frame member supported by the reaping frame, and the frame member is supported by the upper supporting portion of the reaping frame on the upper side thereof. Combine harvester that is configured to be able to swing forward about the center. 2. A lower support for the cutting frame on the lower side of the frame member, wherein a leftwardly-facing bolt and a hole through which the bolt passes are distributed to the frame member and the cutting frame. 2. The combine harvester according to claim 1, wherein the hole is formed as an elongated hole that allows the frame member to swing forward about the upper support.