JPH07298759A - Grain tank structure in combine harvester - Google Patents

Abstract

PURPOSE:To provide the subject structure capable of reserving grains by making the best use of the whole volume of a grain tank. CONSTITUTION:This structure is designed to feed the inside of a grain tank via a 1st guide 9 having a divergent opening with grains discharged through the relevant outlet 8a of a screw-type elevator 8 for threshed grain from a thresher. In this structure, the inside of the 1st guide 9 is equipped with a 2nd guide 10 to change and guide the orientation of discharging the grains via the outlet 8a within a specified swinging angle around the screw shaft center of the elevator 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a first aspect in which a grain discharged from a grain discharge port of a screw type lifting device for lifting a threshed grain from a threshing device is provided with an opening having a flared shape. The present invention relates to a combine grain tank structure configured to supply the inside of the grain tank through a guide body.

[0002]

2. Description of the Related Art Conventionally, in this type of combine grain tank structure, as disclosed in, for example, Japanese Unexamined Patent Publication No. Hei 5-23040, a screw type lifting device is provided between a threshing device and a grain tank. A grain discharge port for discharging grains is provided at the upper end of the screw-type lifting device, and the upper end of the transporting cylinder of the lifting device provided with the grain discharge port The first guide body is provided with a divergent shape opening facing the inside of the Glen tank. The grain discharge port of the screw-type lifting device is fixed and cannot be changed in position.

[0003]

Therefore, in the conventional structure described above, since the grain discharge port of the screw type lifting device cannot be changed in position, the grain discharge direction from the grain discharge port is constant. And since the discharged grains are concentrated and piled up at a certain place,
Even if the grain tanks are piled up near the ceiling, there will still be spaces in the grain tanks where grain can be stored, so that the full capacity of the grain tank can be used effectively. It was not able to store grains. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a combine grain tank structure that enables grain storage by effectively utilizing the full capacity of the grain tank.

[0004]

In order to achieve the above object, a combine grain tank structure of the present invention is provided.
In the structure described in the introduction, the discharge direction of the grains discharged from the grain discharge port of the screw type lifting device is within a predetermined swing angle range with the screw shaft center of the screw type lifting device as the center. The second guide body for changing and guiding the first guide
The feature is that it is provided inside the guide body. The operation and effect of this characteristic configuration are as follows.

[0005]

That is, the discharge direction of the grains discharged from the grain discharge port of the screw type lifting device is determined by the second guide body provided inside the first guide body so that the screw shaft center of the screw type lifting device is changed. Since the change guide is performed within a predetermined swing angle range that is substantially the center, the place where the grains are discharged is not concentrated in a specific place in the Glen tank.
The grains are discharged in a dispersed state over a relatively wide range.

[0006]

Therefore, since the second guide body can change the discharge direction in a state where the grains discharged from the grain discharge port of the screw type lifting device are dispersed in the grain tank, the second guide body can concentrate on a specific place. As a result, it is possible to prevent the grains from being piled up, so that the grains can be sufficiently distributed to the corners in the Glen tank and the grains can be stored in the Glen tank in a state close to the full capacity. The grain storage space inside can be effectively used.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 7 shows the combine. This combine is configured by equipping a machine body frame 2 supported by a pair of left and right crawler traveling devices 1, 1 with a mowing pretreatment unit 3, a threshing unit 4, a Glen tank 5, a boarding control unit 6 and the like. .

The grain tank 5 and the threshing device 4 are arranged side by side on the left and right, and the first product threshed and sorted by the threshing device 4, that is, the threshing grain, is directed from the threshing device 4 to the grain tank 5. After being conveyed by the first-most screw device 7, it is lifted by the screw-type lifting device 8 and discharged into the grain tank 5 from the grain discharge port 8a at the upper end of the screw-type lifting device 8. I have to. As shown in FIGS. 1 to 3, the place where the grain discharge port 8a is provided at the upper end of the screw type lifting device 8 has a flared opening 9a in a state of facing the inside from the outside of the Glen tank 5. It is surrounded by a first guide body 9 made of sheet metal and having the above-mentioned structure. This first
The guide body 9 is composed of a lateral side surface portion 9A, an upper surface portion 9B, and a lower surface portion 9C that draw a convex curved surface in a plan view. Then, the second guide body 10 is fitted on the lower surface portion 9C of the first guide body 9 so as to be slidable around the screw axis P with respect to the lower surface portion 9C and the lateral side surface portion 9A. It is prepared in a closed state. The second guide body 10 is made of sheet metal, and the grain guide outlet 8a facing the inside of the grain tank 5 is formed in the second guide body 10. In addition, a long hole 11 is formed in the front-rear direction in the lateral side surface portion 9A of the first guide body 9, and a knob bolt 12 can be screwed into the second guide body 10 through the long hole 11. , This knob bolt 1
The second guide body 10 is fixed to the first guide body 9 by tightening 2 firmly, and when the bolt 12 with the knob is loosened, the second guide body 10 is released from the fixed posture.
By gripping the knob of the knob bolt 12 and changing the position along the elongated hole 11, the posture of the second guide body 10 is also changed to swing around the screw axis P.

With the above construction, the screw type lifting device 8
Grains blown by the grain discharging blade 8C provided at the upper end of the screw 8B are discharged into the grain tank 5 through the opening in the second guide body 10, that is, the grain discharge port 8a. Then, as shown in FIG. 3, since the second guide body 10 can be appropriately changed in posture by swinging around the screw axis P, the second guide body 10 is guided by the second guide body 10 and discharged from the screw type lifting device 8. The discharge direction of the grains can be changed over a predetermined angle range centered on the screw axis P set by the size of the opening 9a of the first guide body 9 and the shape of the second guide body 10.
Accordingly, by appropriately changing the setting of the grain discharge direction, it is possible to prevent the grains from the grain discharge port 8a from being concentrated and discharged at a certain location.

Next, the arrangement structure of the fuel tank 13 will be briefly described. As shown in FIGS. 4 and 7, the fuel tank 13 is arranged in a state of being mounted on the machine body frame 2 at the front end portion on the left side of the threshing device 5. The fuel tank 13 is integrally connected to the inner surface side of the lower cover 14A among the vertically divided two covers 14 that close the left lateral side surface of the threshing device 5. The lower cover 14A is pivotally attached to the machine body frame 2 so as to be swingable about an axis X along the front-rear direction, and the upper end portion and the upper cover 1 are attached.
4B and 4B can be locked and fixed by the locking structure 15. Therefore, when the lower cover 14A is opened outward by releasing the engagement by the engagement structure 15, the fuel tank 13 also assumes a posture in which it is positioned outward.
The fuel supply port 13a of the above faces outward and upward so that the fuel can be easily supplied. In the figure, reference numeral 16 denotes a chain that extends over the fuel tank 13 and the machine body frame 2, and includes a lower cover 1
This is for holding the fuel tank 13 in a fixed posture with 4B open. On the other hand, in the state where the lower cover 14A is swung and fixed to the upper cover 14B by the locking structure 15, the fuel tank 13 is placed on the machine body frame 2 and the inside of the machine body is stowed. In the figure, 17 is
It is a handle for manually swinging the lower cover 14A.

Next, the operation structure of the shift lever 18 will be described. As shown in FIGS. 5 and 6, the shift lever 18
Is swingably provided so as to be guided by a guide groove 21 along the front-rear direction of a lever guide 20 provided on the right side of the seat 19 in the boarding control section 3. When the intermediate position of the guide groove 21 is set to the neutral position and the gear shift lever 18 is swung forward or backward from the neutral position, the forward speed increase or the reverse speed increase is performed according to the operation amount. It is set to be done. Then, the shift lever 18
The rearward rocking operation limit, that is, the maximum speed in reverse is set by the regulating member 22. In detail,
The regulating member 22 is made of sheet metal, and is pivotally attached to the lever guide 20 so as to be swingable around a longitudinal axis Y at an intermediate position of the sheet metal member that is long in the front-rear direction. The front end edge of the regulation member 22 has a stepped shape in plan view so that the length from the vertical axis Y in each of the divided ranges obtained by dividing the small angle range centered on the vertical axis Y into three becomes longer from the right. The lateral width of each step of the front end edge of the regulation member 22 is set to be about the lateral width of the guide groove 21, and each step of the front end edge of the regulation member 22 is set to the regulation member 22. Is swung around the vertical axis Y so that it can be positioned in the guide groove 21. Further, a pin 22a is provided above the vertical axis Y of the regulating member 22 arranged below the lever guide 20 so as to project upward, and the pin 22a is formed in the lever guide 20 by three pins. The engaging holes 23 ... Can be selectively engaged. As a result, the engagement between the pin 22a and the pin engagement hole 23 and the regulation member 2 at the Y-axis position of the vertical axis.
2 is pivotally attached to the lever guide 20,
The restriction member 22 is selected in three positions and fixedly held in each position so that the restriction member 22 can be fixedly held in a state in which each of the two step portions is located in the guide groove 21. Further, in order to manually engage and disengage the pin 22a with respect to the pin engaging hole 23 and perform a swing displacement operation around the longitudinal axis Y of the regulating member 22, the rear end portion of the regulating member 22 is inserted into the lever guide 20. The grip portion 22b is formed by projecting above the small elongated hole 20a provided. Therefore, by manually holding the grip portion 22b and appropriately setting the posture of the restricting member 22 elastically biased by the spring 24 in the engaging direction of the pin 22a, the reverse speed increase of the speed change lever 18 at an arbitrary step portion. The limit position of operation can be set in 3 steps. Since the maximum reverse speed can be set in advance to three levels by the regulation by each step, the gear shift lever 18 is erroneously misunderstood like during work traveling.
Can be appropriately switched to a state in which the vehicle does not become unreasonably high even if it is rocked to the maximum reverse speed, or to a state in which it can travel at a somewhat high speed even in reverse as needed, such as when traveling on the road. .

[Other Embodiments] The direction of the second guide body may be changed automatically and periodically by driving by an actuator such as an electric motor, or the second guide may be operated by a switch operation by the operator. The orientation of the body may be changed appropriately.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a cross-sectional plan view showing an upper portion of a lifting device.

FIG. 2 is a vertical sectional front view showing an upper portion of the lifting device.

FIG. 3 is a schematic plan view showing a state in which the posture can be freely changed between a state (a) in which the second guide body is directed rearward and a state (b) in which it is directed forward.

FIG. 4 is a vertical cross-sectional rear view showing a structure for taking the fuel tank in and out of the airframe.

FIG. 5 is a plan view showing a structure for setting the reverse maximum speed of the shift lever.

FIG. 6 is a vertical cross-sectional side view showing a structure for setting the reverse maximum speed of the shift lever.

FIG. 7 is an overall side view showing the combine.

[Explanation of symbols]

 4 Threshing Device 5 Glen Tank 8 Screw Type Lifting Device 8a Grain Discharge Port 9 First Guide Body 10 Second Guide Body

Claims (1)

[Claims] 1. A grain-shaped discharge opening (8a) of a screw-type lifting device (8) for lifting the threshed grain from the threshing device (4) is provided with a flared opening. First
A combine grain tank structure configured to supply the inside of the grain tank (5) through a guide body (9), wherein the grain discharge port (8a) of the screw type lifting device (8).
The second guide body (10) for changing and guiding the discharge direction of the grains discharged from the first guide within a predetermined swing angle range about the screw shaft center of the screw type lifting device (8). Combine grain tank structure provided inside the body (9).