JP2004180630A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the traveling and working performance of a combine harvester while keeping a sufficient balancing effect with a light weight by placing a balance weight at an effective position of the combine harvester. <P>SOLUTION: This combine harvester has a reaping part in front of a vehicle carriage and a threshing part behind the reaping part. A waste straw cutter to cut the threshed waste straw is placed behind the threshing part. A box containing the balance weight is placed behind the waste straw cutter. The box is detachably attached to the cover frame of the waste straw cutter. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a combine for cutting and threshing a cereal stalk growing on a field, and belongs to the technical field of agricultural machinery.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, as a device for maintaining a balance before and after a combine, there is a device in which a balance weight is attached to a rear end portion of a chassis below a rocking sorting device in a threshing unit mounted on the chassis (for example, see Patent Document 1). 1).
[0003]
[Patent Document 1]
JP-A-2001-190134
[Problems to be solved by the invention]
In the prior art, since the balance weight is at a relatively low height above the ground, there has been a problem that a sufficient balance effect cannot be exerted unless a relatively heavy weight is used.
[0005]
An object of the present invention is to maintain a sufficient balance effect with a light weight by disposing a balance weight at an effective position.
[0006]
[Means for Solving the Problems]
The present invention has taken the following technical means in order to solve the above-mentioned problems. That is, the present invention according to claim 1 is equipped with a cutting unit in front of a chassis and a threshing unit behind the cutting unit, and a rear straw cutter for cutting and processing the straw after threshing at the rear of the threshing unit. A certain combine is characterized in that a box body with a built-in balance weight is installed behind the waste straw cutter.
[0007]
There are a case where a double-row cutting section is installed and a case where a triple-row cutting section is installed in front of the threshing section. When the three-row mowing part is installed, the weight becomes heavier than that of the two-row mowing part, so that the center of gravity of the machine body is closer to the front side. At this time, the balance weight contained in the box is set at the rear position of the waste straw cutter. Then, as the front side of the body becomes heavier, the corresponding weight is applied to the rear part of the body, so that the balance between the front and rear of the body is well maintained.
[0008]
Since the balance weight is set at the rear position of the exhaust straw cutter having a relatively high ground height, the balance effect between the front and rear of the aircraft can be sufficiently exerted even with a light weight.
According to a second aspect of the present invention, in the first aspect, the box is detachably attached to a cover frame of a waste straw cutter.
[0009]
When the cutting unit is for two-row cutting, the balance weight is unnecessary, so the box with the built-in weight is removed from the back of the straw cutter. Further, even if the cutting section is for three-row cutting, when the waste straw notter is set on the upper part or the rear part of the waste straw cutter, the waste straw notter functions as a balance weight. Remove your body from the back of the cutter to deal with it.
[0010]
【The invention's effect】
Therefore, according to the first aspect of the present invention, since the setting position of the balance weight is located at the rear part of the exhaust straw cutter at a height higher than the ground, the balance effect between the front and rear of the aircraft can be sufficiently achieved even with a relatively light weight. Can be demonstrated. In addition, since the balance weight is built in the box, it is possible to maintain an aesthetic appearance.
[0011]
According to the second aspect of the present invention, since the box body with built-in weight is detachably attached to the rear part of the waste straw cutter, the effect of the first aspect of the present invention is achieved. Since the work in a narrow space is not required, the work of attaching and detaching can be performed easily and easily.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings.
First, the configuration of the combine shown in FIGS. 1 and 2 will be described.
On a chassis 2 equipped with a traveling crawler 1, a cutting unit 3 which can be moved up and down at the front and a threshing unit 5 equipped with a feed chain 4 at the rear are mounted. An operation unit including an operation box 6 and a driver's seat 7 is installed on a side portion of the reaping unit 3, and a grain tank 8 is provided on a rear side of the threshing unit 5 behind the operation unit. The rear part of the threshing unit 5 is equipped with a waste straw cutter 10 for receiving and cutting the waste straw after threshing transported backward by the waste straw transport device 9.
[0013]
In the embodiment of the combine, a configuration is shown in which a three-row mowing unit 3 is provided in front of the threshing unit 5 for cutting and transporting while raising three rows of grain culms. Therefore, since the front-rear balance of the entire combine is maintained only when the two-row mowing unit is provided, the machine weight center is reduced when the three-row mowing unit 3 is provided as in the above embodiment. In order to correct this front-rear balance, it is necessary to set a balance weight in an appropriate position on the rear side of the fuselage. Therefore, in the embodiment of the present invention, the balance weight 12 is detachably mounted on the cover frame 11 of the cutter at the rear side of the cutter 10. The balance weight 12 is loaded into a box 13 having a U-shape in side section, and is integrally fixed by welding means or the like. The upper end of the box 13 is engaged with an engaging hook 14 projecting from both side surfaces of the box 13 so as to be hooked on a locking pin 15 projecting from the cover frame 11. At the lower end side, a fastening fixture 19 such as a bolt is screwed into a mounting hole 17 of a mounting stay 16 protruding therefrom and a mounting hole 18 provided on the cover frame body 11 side to be tightened and fixed. .
[0014]
The configuration of the combine grain tank shown in FIGS. 4 to 6 will be described.
The illustrated Glen tank 8 mainly includes an upper tank Ga and a lower tank Gb, and a plurality of intermediate increasing tanks G1, G2,. To increase the grain volume. The lower end of the upper tank Ga and the lower end of each of the intermediate increasing tanks G1 and G2 are formed on a funnel-shaped inclined surface 20, and the inclination is such that the grains on the funnel-shaped inclined surface 20 can quickly flow down. The angle (repose angle) θ is provided. Further, a funnel-shaped receiving surface 21 for receiving the funnel-shaped inclined surface 20 is provided at an upper end of each of the intermediate increasing tanks G1 and G2 and an upper end of the lower tank Gb. Therefore, when increasing the volume, it is only necessary to stack the intermediate volume increase tanks upward, and since the respective joints are funnel-shaped, they can be securely connected without being displaced.
[0015]
As described above, the intermediate increasing tanks G1, G2,... Are interposed as spacers between the upper tank Ga and the lower tank Gb. However, as the number of these increasing tanks increases, the capacity of the entire tank increases. In addition, each time the number of intervening members increases, the upper tank Ga is sequentially positioned higher and higher. Therefore, in this case, the first fryer 23 with the discharge port 22 facing the upper tank Ga is configured to be vertically movable. The first fryer 23 is composed of a fryer cylinder 23a and a fryer helix 23b, and is configured to extend and contract vertically.
[0016]
At the bottom of the lower tank Gb, a discharge screw conveyor 24 for transporting the grains in the horizontal direction in the front-rear direction is provided, and at the end of the discharge screw conveyor 24, the grains are lifted and transported in the vertical direction. A lifting auger 25 and a discharge auger 26 that can freely turn left and right and vertically move up and down with respect to the lifting auger 25 are connected to each other.
[0017]
The Glen tank 8 may be formed by sheet metal processing, or may be formed by processing a synthetic resin.
The embodiment shown in FIGS. 7, 8 and 9 will be described.
On the operation box 6 located in front of the driver's seat 7, there is provided an operation lever (power steering lever) 27 for controlling the raising and lowering of the reaping unit 3 by operating in the front-rear direction, and controlling the steering of the machine body left and right by operating in the left-right direction. It is arranged. In the space 30 between the front frame 28 of the operation box 6 and the front cover 29 detachably mounted at the front side of the front frame 28, the power steering lever 27 is operated. A power steering relief valve 31 and a part of a hydraulic hose 32 for controlling the raising and lowering of the reaping unit and the steering control of the right and left sides of the machine are internally provided. Conventionally, a power steering relief valve was disposed behind the front frame, so that it was difficult to perform maintenance such as pressure adjustment and maintenance. Since there is no obstacle in the vicinity, maintenance can be easily performed simply by removing the front cover 29. Since the inside of the space 30 is heated to a high temperature, the heat can be radiated by providing the slit 33 in the front cover 29.
[Brief description of the drawings]
FIG. 1 is a side view of the combine. FIG. 2 is a plan view of the same. FIG. 3 is a perspective view of a main part of the combine. FIG. 4 is a side view of a Glen tank for combine. FIG. FIG. 7 is a perspective view of the combine. FIG. 8 is a perspective view of the combine. FIG. 8 is a side sectional view of the same. FIG. 9 is a perspective view of the same.
DESCRIPTION OF SYMBOLS 1 Running cradle 2 Undercarriage 3 Cutting part 4 Feed chain 5 Threshing part 6 Operation box 7 Driver's seat 8 Glen tank 9 Discharge straw conveying device 10 Discharge straw cutter
11 Cover Frame 12 Balance Weight 13 Box 14 Engagement Hook 15 Locking Pin 16 Mounting Stay
17 Mounting Hole 18 Mounting Hole 19 Tightening Fixture 18 Knob Bolt 19 Discharge Screw Conveyor 20 Lifting Auger 21 Discharge Auger

Claims (2)

A combine equipped with a cutting unit in front of the chassis and a threshing unit behind the threshing unit, and a waste straw cutter for cutting and processing the waste straw after threshing at the rear of the threshing unit. A combine characterized in that a box with a built-in balance weight is installed. The combine according to claim 1, wherein the box body is detachably attached to a cover frame body of a waste straw cutter.

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