JP3310523B2 - Combine grain tank structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure in which a Glen tank is rotatable around a vertical axis at the rear side of a Glen tank mounted on an airframe, and a screw conveying device in the Glen tank is provided. On the other hand, the present invention relates to a combine grain tank structure provided with a power input portion for transmitting power from the front side of the grain tank.

[0002]

2. Description of the Related Art Conventionally, as a Glen tank structure of this type of combine, for example, as disclosed in Japanese Utility Model Application No. 63-114160, a belt transmission mechanism is attached to an input shaft of a screw conveying device in a Glen tank. It was configured to transmit power. When the Glen tank is swung around the vertical axis at the rear, a rotation drive unit on the driving unit side is used in order to eliminate the trouble of manually removing and passing the belt of the input belt transmission mechanism one by one. And the power input unit to and from the belt transmission mechanism can be intermittently attached and detached only by moving the Glen tank around the vertical axis.

[0003]

However, in the above-mentioned conventional structure, the driven pulley of the input shaft protruding forward from the front surface of the Glen tank of the screw conveying device in the Glen tank, and the drive shaft located on the back side of the fuselage. A transmission belt is wound around the pulley to form a belt transmission mechanism, and the power to the drive pulley is once transmitted to the rotation drive section on the driving section side by a bevel gear mechanism so as to be detachably detachable as described above. It has an input shaft structure to the bevel gear along the left-right direction through. Therefore, the provision of the belt transmission structure and the bevel gear structure to provide an input portion structure for the screw transfer device in the Glen tank complicates the structure and increases the cost.

The present invention has been made in view of the above circumstances, and can simplify the structure of a power input portion to a screw transfer device in a Glen tank and rotate the Glen tank around a vertical axis. It is an object of the present invention to provide a combined grain tank structure that does not require any operation or operation on a transmission mechanism for a screw conveying device in the grain tank when moving.

[0005]

[Means for Solving the Problems]

(Structure) The Glen tank structure of a combine according to claim 1 of the present invention is configured such that the Glen tank is rotatable around an up-down vertical axis at the rear side of a Glen tank mounted on an airframe, and the Glen tank is configured to be rotatable. A grain tank structure of a combine provided with a power input unit for transmitting power from the front side of the Glen tank to a screw conveying device in the tank, wherein the power input unit extends forward from the Glen tank. The input shaft of the screw transfer device, a bevel gear mechanism capable of changing the transmission path in the left-right direction intersecting the input shaft is provided inside a gear transmission case.
In conjunction with the interlocking connection, a fitting portion of a transmission shaft along the left and right direction for transmitting power to the bevel gear mechanism , and a fitted portion of an input bevel gear of the bevel gear mechanism are formed around the vertical axis center of the Glen tank. The input bevel gear is configured to be interlockably connected so as to be able to be fitted and detached by a relative distance movement accompanying the displacement of the input.
The fitting portion of (a) is located in the gear transmission case .

(Operation) According to the characteristic structure of the first aspect of the present invention, the moving direction of the Glen tank, the fitted portion of the input bevel gear of the bevel gear mechanism and the fitting direction of the transmission shaft are fitted. In the vicinity where the transmission is performed, the transmission shaft and the transmission direction changing mechanism can be engaged and disengaged only by the operation of simply rotating the Glen tank around the longitudinal axis. This need not be performed manually, and only a bevel gear mechanism is provided to change the transmission direction.

(Effects) Therefore, according to the characteristic structure of the first aspect of the present invention, there is no need for the work of attaching and detaching the transmission mechanism to and from the screw transfer device due to the rotation of the Glen tank around the longitudinal axis. Separation work is simplified, work efficiency is improved, and the transmission direction change can be made extremely simple structurally by using only the bevel gear mechanism, so that parts costs and the like can be reduced. Since the power input section is configured so that the bevel gear mechanism and the transmission shaft can be freely attached and detached, it is more compact than the conventional one that is transmitted from the belt transmission mechanism, and the Glen has the same front-to-rear dimensions as the conventional one. The front side of the tank can be positioned forward, which contributes to the expansion of the capacity of the Glen tank.

(Structure) The grain tank structure of a combine according to claim 2 of the present invention is the same as that of claim 1, wherein the fitted portion of the input bevel gear of the bevel gear mechanism and the transmission shaft of the transmission shaft. The transmission shaft is displaceably supported by the body in the direction of relative distance movement with respect to the fitting portion, and the transmission shaft is elastically urged toward the fitting portion of the input bevel gear to the fitted portion. This is a characteristic configuration.

(Operation) According to the characteristic configuration of the second aspect of the present invention, the input bevel gear of the bevel gear mechanism;
Since the transmission shaft is displaceably supported in the moving direction relative to the transmission shaft in the moving direction, and the transmission shaft is elastically biased to a side fitted to the input bevel gear of the bevel gear mechanism, the movement of the Glen tank When the transmission direction changing mechanism in the disengaged state and the transmission shaft are engaged with each other, even if the input bevel gear of the bevel gear mechanism is slightly caught in the engagement with the transmission shaft, it can be fitted smoothly. When the transmission shaft is retracted until it becomes
The transmission shaft is moved by an elastic biasing force of a spring or the like to be fitted to the fitted portion of the input bevel gear of the bevel gear mechanism so as to eliminate the retreat of the transmission shaft, and the fitting is performed.

(Effects) Therefore, according to the characteristic structure of the second aspect of the present invention, the bevel gear mechanism can be satisfactorily manufactured even if the assembly and dimensions of the Glen tank and the like are not accurate and there is some backlash. Since the input bevel gear and the transmission shaft can be fitted to each other and can be easily manufactured, the cost can be reduced.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a combine. This combine is equipped with a threshing device 3, a boarding operation unit 4, a Glen tank 5, etc. mounted on a machine body 2 supported by a pair of left and right crawler traveling devices 1 and 1, and a machine body 2
The cutting pre-processing unit 6 swings up and down around the axis of the horizontal axis.
Is configured.

As shown in FIG. 1 and FIG. 2, the Glen tank 5 is formed of a sheet metal material in a box shape, and the lower side thereof is formed in a tapered shape as viewed in the front-rear direction. A bottom screw 7 is provided as a screw conveying device along the front-rear direction. This bottom screw 7
The rear end protrudes outward from the rear side wall 5B of the Glen tank 5, and an unloader 8 is connected to the rear end. The unloader 8 includes a vertical feed screw device 8A and a horizontal feed screw device 8B. Then, the threshing grain from the threshing device 3 is supplied into the Glen tank 5 through the lifting screw 9, and the grain is discharged from the Glen tank 5 by the bottom screw 7 and the bottom screw 7. This is performed by the unloader 8 that is linked. The Glen tank 5 is configured so as to be rotatable as a whole around a vertical axis Z substantially the same as the rotation axis of the vertical feed screw device 8A.

As shown in FIGS. 1 to 3, the front end of the screw shaft 7a of the bottom screw 7 projects outward from the front side wall 5A of the Glen tank 5 as an input shaft. A bevel gear mechanism 11 is interlockedly connected to an end of the gear transmission case 10 while being housed in the gear transmission case 10 to form a power input unit IN. The bevel gear mechanism 11 is configured such that the transmission direction can be changed in a state of intersecting with the axis along the longitudinal direction of the screw shaft 7a, that is, at 90 degrees with the axis along the horizontal direction, that is, along the axis along the front-rear direction of the screw shaft 7a, A transmission shaft 12, which is a hexagonal axis extending in the left-right direction, which is removably fitted into a hexagonal hole 19 of a boss of an input-side bevel gear (input bevel gear) 11a, is provided. The transmission shaft 12 is connected to the driver's seat 13 of the boarding driver 4.
The belt is driven by an engine 14 disposed below via a belt transmission mechanism 15, and is driven by a driven pulley 15 a of the belt transmission mechanism 15 that rotates integrally with the transmission shaft 12 and a support stay 16 erected on the body. It is slidably supported in the axial direction, and is elastically biased toward the right side of the machine body by a spring 17. Further, the fitting portion 18 at the tip of the transmission shaft 12 is chamfered in a tapered shape so that the fitting portion 18 can be smoothly fitted into and removed from a hexagon hole 19 as a fitted portion of the input bevel gear 11a.

With the above configuration, when the Glen tank 5 is swung about the vertical axis Z so as to open the side of the threshing unit 3 from the use posture, the input bevel gear 11a is separated from the transmission shaft 12 in the left-right direction. become. Conversely, when the Glen tank 5 in the open position is changed to the normal use position, an input bevel gear that moves integrally with the Glen tank 5 with respect to the transmission shaft 12 as the storage of the Glen tank 5 rotates. 11
a approaches the transmission shaft 12, the fitting portion 18 at the tip of the transmission shaft 12 enters the hexagonal hole 19 of the boss portion of the input bevel gear 11 a, and even if it is slightly misaligned due to backlash or the like, the spring 17 The transmission shaft 12 is temporarily retracted against the urging force of the input bevel gear 11 a and the transmission shaft 12.
After the shaft cores of the transmission shaft 12 are more aligned with each other, the fitting portion 18 at the end of the transmission shaft 12 is fitted into the hexagonal hole 19 of the boss portion of the input bevel gear 11a satisfactorily. The opening and closing operation of the transmission to the bottom screw 7 and the unloader 8 can be performed simply by opening and closing around the axis Z.

[0015] In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the structure shown in the attached drawings.

[Brief description of the drawings]

FIG. 1 is an overall side view showing a combine.

FIG. 2 is a schematic explanatory view showing a transmission mechanism and the like to a Glen tank in a plan view.

FIG. 3 is a cross-sectional plan view showing a transmission mechanism to a Glen tank.

[Explanation of symbols]

 2 Body 5 Glen tank 7 Screw transfer device 7a Input shaft 11 Bevel gear mechanism 11a Input bevel gear 12 Power transmission shaft 18 Fitting part 19 Fitted part IN Power input part Z Vertical axis core

Continuation of the front page (56) References JP-A-6-253666 (JP, A) JP-A-7-24018 (JP, U) JP-A-4-9537 (JP, U) JP-A-3-61843 (JP , U) Shokai 63-68742 (JP, U) Shokai 4-88239 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01F 12/60

Claims (2)

(57) [Claims] The Glen tank (5) mounted on an airframe (2) is configured so that the Glen tank (5) is rotatable around an up-down vertical axis (Z) on the rear side of the Glen tank (5). (5) A combined grain tank structure provided with a power input section (IN) for transmitting power from the front side of the Glen tank (5) to a screw conveying device (7) in the (5), wherein the power input section is provided. (IN) is provided in the input shaft (7a) of the screw conveying device (7) extending forward from the Glen tank (5) in a lateral direction crossing the transmission path with the input shaft (7a). Changeable bevel gear mechanism (11)
Is installed inside the gear transmission case (10)
In both cases , a fitting portion (18) of a transmission shaft (12) extending in the left-right direction for transmitting power to the bevel gear mechanism (11), and a fitting portion (11) of an input bevel gear (11a) of the bevel gear mechanism (11). 19) and the input bevel gear are configured to be interlockably connected to each other by relative movement with the displacement of the Glen tank (5) around the vertical axis (Z).
The part (19) to be fitted of (11a) is connected to the gear transmission case.
(10) The combine's Glen tank structure located inside . 2. A direction of relative movement between the fitted portion (19) of the input bevel gear (11a) of the bevel gear mechanism (11) and the fitting portion (18) of the transmission shaft (12). The transmission shaft (12) is displaceably supported by the body (2), and the transmission shaft (12) is elastically mounted on the side of the input bevel gear (11a) to be fitted to the fitted portion (19). The Glen tank structure of a combine according to claim 1, which is biased.