JP3326321B2 - Combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle body provided with left and right crawler traveling devices, which is provided with a pre-cutting unit which can move up and down freely in front of the vehicle body, and which is equipped with a threshing device and a grain collecting unit. More specifically, the present invention relates to a technique for improving the weight balance of a vehicle body in the left-right direction.

[0002]

2. Description of the Related Art In a conventional combine, a threshing device and a Glen tank are mounted side by side in the center of a vehicle body. At the time of harvesting, the weight of the grains stored in the Glen tank is used in the horizontal direction of the vehicle body. Often, the weight balance is worsened. For the purpose of solving this inconvenience, the present applicant has constructed a frame system including a pre-cutting unit, a threshing device, and a Glen tank so as to be freely slidable in the horizontal direction with respect to the crawler traveling device, and stores the frame system in the Glen tank. There has been proposed a technique for improving the weight balance by moving the frame system so that the position of the Glen tank is directed toward the inside of the vehicle body when the amount of grain is increased (for example, Japanese Patent Application No. 7-186846).

[0003]

As in the prior art, a frame system provided with a pre-cutting unit, a threshing device, and a Glen tank is configured to be movable laterally with respect to a crawler traveling device. Since an engine is provided for the frame system, it is necessary to form a system that reliably transmits power from the engine to the crawler traveling device even when the vehicle slides in the lateral direction. Also, the combine employs a configuration in which the power from the engine is transmitted to the crawler traveling device after being decelerated by a transmission case or the like, and when the crawler traveling device and the frame system are configured to be relatively movable in the lateral direction, the engine is used. It is necessary to provide a structure that allows relative movement between the transmission case and the transmission case or between the transmission case and the crawler traveling device.

[0004] The harvesting pre-processing unit of the combine employs a structure in which the shifting power from the transmission case is transmitted because it is required to be driven in synchronization with the traveling speed. As described above, the crawler traveling device and the frame system are connected to each other. When the transmission case is configured to be relatively movable in the lateral direction, the transmission case is supported by the frame system, and the transmission system between the engine and the transmission case, and the transmission system between the transmission case and the pre-cutting unit are respectively provided. To fix the relative position and provide the transmission system between the transmission case and the crawler traveling device with a telescopic structure is effective in terms of simply configuring the transmission system. However, for example, when the transmission shaft between the transmission case and the drive sprocket of the crawler traveling device is provided with a spline structure or the like at an intermediate portion thereof so as to be extendable and contractible, the intermediate portion of the transmission shaft does not bend. However, there is room for improvement because the structure may be complicated, such as a special need for a bearing member for holding the axis of the telescopic part.

[0005] An object of the present invention is to provide a frame system including a pre-cutting unit, a threshing device, and a Glen tank so as to be movable in the lateral direction with respect to a crawler traveling device. The point is that the transmission shaft between the drive sprocket of the crawler traveling device and the drive shaft does not bend and is configured to be extendable and contractible.

[0006] As a first feature of the present invention is indicated in the outset
A harvesting pre-processing unit that is capable of moving up and down with respect to the front of a vehicle body having left and right crawler traveling devices, and in a combine equipped with a threshing device and a grain collection unit on the vehicle body, A track frame that supports the crawler traveling device, and a body frame that is movable in the lateral direction with respect to the track frame, and the cutting pre-processing unit, the threshing device, and the grain And a transmission case for shifting the power from the engine to the left and right crawler traveling devices. The transmission case protrudes in the left-right direction from the transmission case. the drive shaft,
It is supported on the track frame with a fixed horizontal spacing.
The crawlers are connected to the driving sprocket of the crawler traveling device so as to be relatively movable in the lateral direction and to transmit torque, and the operation is as follows.

A second feature of the present invention is that the driving sprocket is supported on the track frame via a bearing member, and the driving sprocket is located at a position overlapping the bearing member when viewed in a direction orthogonal to the axis of the driving sprocket. A spline fitting hole is formed in the driving sprocket, and a spline portion to be fitted in the spline fitting hole is formed on the outer surface of the drive shaft. The operation is as follows.

According to the first feature, when the vehicle body frame moves relative to the track frame in the lateral direction, the transmission shaft projecting left and right from the transmission case is attached to the drive sprocket of the crawler traveling device. Relative to the drive sprocket and the transmission shaft, the relative movement between the drive sprocket and the transmission shaft is allowed, and the number of parts can be reduced as compared with a configuration in which the intermediate portion of the transmission shaft is configured to be expandable and contractible. At the same time, since the expansion and contraction is performed at the portion of the drive sprocket rotatably supported on the crawler traveling device side, the shaft center of the transmission shaft does not bend.

According to the second feature, the spline fitting portion between the spline of the driving sprocket and the transmission shaft overlaps with the bearing member of the driving sprocket when viewed in a direction perpendicular to the axis of the transmission shaft. Even when a strong external force such as tension from the crawler belt is applied, the bearing portion supports the driving sprocket, and the transmission shaft fitted in the driving sprocket in a spline type supports the driving sprocket. At the same time, the bending of the shaft of the transmission shaft is more unlikely to occur.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIGS. 1 and 2, an elevating device 2 for raising planted grain culm at the front of a traveling vehicle body 1 having left and right crawler traveling devices A, A, A cutting pre-processing unit B having a cutting device 3 for cutting and a conveying device 4 for conveying the harvested grain culm is provided so as to be capable of ascending and descending operations by driving a hydraulic cylinder 5, and the traveling pre-cutting unit is A threshing device C in which the harvested culm from B is supplied to the feed chain 6 thereof, and a grain tank D as a grain recovery unit for storing grains from the threshing device C are mounted.
An operating unit including an operating seat 7 and a control tower E is arranged at a position parallel to the right side of the pre-cutting unit B to form a combine.

The threshing device C is a handling cylinder (not shown) that rotates a harvested grain stalk held and transported by a feed chain 6.
In addition to sorting and collecting the grains by treating with the above, the collected grains are sent to the Glen tank D via the lifting device 8,
In addition, the waste straw after threshing is removed from the waste straw cutter 9 at the rear end of the apparatus.
And is configured to be shredded. The Glen tank D is provided with a bottom screw 10 for feeding the stored grains backward, and a vertical screw for feeding the grains from the bottom screw 10 upward so as to send the grains from the bottom screw 10 out of the Glen tank. 11 and this vertical screw 1
And a horizontal screw 12 for feeding the kernel from 1 in the horizontal direction. The kernel output device is rotatable around the vertical axis with respect to the upper end of the vertical screw 11, and the A horizontal screw 12 is provided so that the tip can be moved up and down.

A step 13 for an operator to board is formed in the driving section, and an engine 14 is arranged below the driver's seat 7. The vehicle includes a single operation lever 15 for controlling the traveling direction of the traveling vehicle body 1 and an arched frame 16.

Further, in this combine, the traveling vehicle body 1 includes a track frame T system having a crawler traveling device A,
Body frame F equipped with threshing device C, Glen tank D, etc.
The cutting pre-processing unit B is configured to be slidable in the lateral direction by the driving force of an electric motor (not shown) with respect to the system of the body frame F. (The adjustment structure is not described in detail). Further, in this combine, the system of the body frame F is configured to be movable in the lateral direction by the driving force with respect to the system having the track frame T, and when the weight of the grain stored in the Glen tank D increases, the track frame By shifting the system of the body frame F in the lateral direction by an appropriate amount with respect to the system of T, the weight balance in the left and right direction is improved, and at the same time, the running performance is improved by equalizing the grounding load of the left and right crawler running devices A. It is configured to maintain.

The crawler traveling device A includes a track frame T, a front drive sprocket 17, a plurality of grounding wheels 18, a rear tension bar 19 configured to be adjustable in the front-rear direction, and these components. And a crawler belt 20 made of rubber to be wound.

As shown in FIG. 4, the vehicle body frame F includes a plurality of front-rear frames 21 and a plurality of lateral frames 22.
And a step frame 23 integrally formed in a posture protruding forward from a right side portion to form the step 13, and is formed at a center position in the left-right direction at a front portion of the body frame F. A transmission case 24 to which the power from the engine 14 is transmitted is fixed, and a transmission system for transmitting the power from the transmission case 24 to the drive sprocket 17 is formed.

The transmission system is configured to be extendable and contractable so as to allow a lateral sliding operation of the body frame F with respect to the traveling system as described later. That is, as shown in FIG. 3, FIG. 5, and FIG. 7, the tubular support boss 27 is fixedly provided at the front end position of each of the right and left track frames T with a horizontal shaft center.
The cylindrical portion 17A of the drive sprocket 17 is internally fitted to and supported by a ball bearing 28 as a bearing member provided inside the support boss 27. Further, cylindrical bodies 29, 29 are fixedly provided on both side surfaces of the transmission case 24, and a drive shaft 30 is idlely supported by a ball bearing 28 provided in the cylindrical body 29. A spline portion 30S is formed on the outer surface of the outer end portion of the drive shaft 30, and the spline portion 30S
A spline 17S as a spline fitting hole formed in the inner surface of the drive sprocket 17 is fitted so as to be able to transmit torque and to be relatively movable in the direction of the lateral axis X. The position of this spline fitting is set to a position overlapping with the ball bearing 28 provided inside the support boss 27, and the length (overlap amount) of the drive shaft 30 being fitted inside the cylindrical portion 17A of the drive sprocket 17. Is made large so that bending can be prevented from occurring, and the respective axes are aligned with high accuracy. Also, the support boss 27
In contrast, a protection cylinder 31 is formed with an inner diameter capable of fitting the cylindrical body 29 from the support boss 27 side to the cylindrical body 29 side. A rubber bellows 32 is formed so as to connect to the outer end of the tubular body 29.

With this configuration, when the body frame F slides laterally with respect to the track frame T, the drive sprocket 17 provided on the track frame T and the transmission sprocket 17 provided on the body frame F The relative movement of the case 24 with the drive shaft 30 is allowed by the expansion and contraction of the spline fitting portion and the bellows 32, and
2 keeps the airtightness between the drive shaft 30 and the drive sprocket 17 to prevent intrusion of dust, and also prevents the protection cylinder 31 from contacting the bellows 32 of the above ground protruding object so as not to damage the transmission system. ing.

As shown in FIG. 6, the left and right track frames T are connected and fixed to the front ends and the rear ends thereof, and run in a pair of front and rear connection frames 35, 35 which are arched in the front-rear direction. And a supporting plate 36 in a vertical position on the upper part of each connecting frame 35.
A gutter-like member 37 which is opened upward in a horizontally long position is disposed via the support plate 36, and surfaces of the support plate 36 facing in the front-rear direction are connected and fixed by a reinforcing frame 38 in a front-rear position.

As shown in FIGS. 3, 4, 6, and 8, the lateral frame 22 at the front end of the vehicle body frame F is fitted into the gutter-like member 37 at the front position from above, and the gutter-like member at the rear position. 37, the rear side frame 22 on the rear side of the body frame F is fitted from above, and the gutter members 37, 37
Members 41, 41 for preventing the horizontal frames 22, 22 from separating from the upper side are detachably fixed to the gutter-like members 37 with bolts 42 ° so that the vehicle body can be attached to the track frame T system. The system of the frame F is supported so as to be relatively movable in the lateral direction, and the system of the body frame F is connected to the system of the track frame T in a vertically inseparable manner.

As shown in FIGS. 4 and 9, a screw shaft 43 is disposed in a horizontally long position at an intermediate position between the front and rear connection frames 35, 35 in a plan view, and the screw shaft 43 is connected via a bearing member 44. A DC motor 46 is provided via a speed reduction mechanism 45 so as to be rotatably supported on the lateral frame 22 of the vehicle body frame F and to rotate the screw shaft 43 in the forward and reverse directions. Also, a nut member 47 screwed to the screw portion 43A of the screw shaft 43 is provided on the intermediate member 48 connected and fixed to the reinforcing frame 38, so that the rotation of the screw shaft 43 causes the body frame to move relative to the track frame T system. The system of F is configured to be able to slide and operate in the horizontal direction.

As shown in FIG. 10, the track frame T
A control system for setting the amount of movement of the body frame F relative to the system in the lateral direction is formed. In this control system, a variable resistor provided in a driving unit and operated by a knob 50 slidable in the left-right direction is provided. A driver 5 having a control device 52 to which a signal from a stereotype setting device 51 is input, and amplifying a signal from the control device 52 and transmitting the amplified signal to the DC motor 46
And a potentiometer type stroke sensor 54 for measuring the amount of relative movement of the system of the body frame F with respect to the system of the track frame T in the lateral direction and feeding it back to the control device. Further, the control operation of the control device 52 is set so as to drive the DC motor 46 in either the forward or reverse direction so that the signal corresponding to the signal from the setting device 51 is fed back from the stroke sensor.
The system of the vehicle body frame F relative to the system of the track frame T can be relatively moved in the lateral direction by an amount corresponding to the operation position of.

In this combine, when traveling on the road without storing grains in the Glen tank D, the entire traveling vehicle body is maintained with the body frame F system set at the right stroke end with respect to the truck frame T system. The weight is distributed so that the weight balance in the left and right directions is balanced. At the time of harvesting, the system of the body frame F is required for the system of the track frame T by operating the knob 50 of the setting device before the start of the operation. Shifts to the left by the amount, or operates the knob 50 of the setting device to change the system of the body frame F with respect to the system of the track frame T by increasing the weight of the grain stored in the Glen tank D by the operation. By shifting to the left by the necessary amount, it is possible to work in a state where the weight balance in the left and right direction of the entire traveling vehicle is balanced. At the time of the lifting operation, a strong feeding force is obtained by a screw type feeding mechanism arranged at an intermediate position of the connecting frame 35, and the force from the operating means does not cause stiffness. Even when assembling the vehicle body, the work can be performed in a simple form in which the vehicle body frame F is fitted into the track frame T from above.

[0024]

Accordingly, the power from the transmission case provided on the frame system of the vehicle body can be transmitted to the drive sprocket of the crawler traveling device without causing the transmission shaft system to bend, and the transmission shaft system can be easily transmitted to the transmission shaft system. A combine that can be extended and contracted is configured (claim 1). In addition, by stabilizing the supporting position of the drive sprocket, it is possible to transmit power in a state in which the shaft center posture of the transmission shaft system is further stabilized while permitting expansion and contraction. .

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

[Brief description of the drawings]

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

FIG. 2 is a right side view of the combine.

FIG. 3 is a front view of a traveling power transmission system.

FIG. 4 is a plan view showing a frame structure of the vehicle body.

FIG. 5 is a sectional view of a transmission system from a transmission case to a driving sprocket.

FIG. 6 is a perspective view showing a frame structure of a vehicle body.

FIG. 7 is an exploded sectional view of a transmission system for a driving sprocket.

FIG. 8 is a vertical side view of the guide mechanism.

FIG. 9 is a rear view showing a feed mechanism and an electric motor.

FIG. 10 is a block circuit diagram of a control system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Body 14 Engine 17 Drive sprocket 24 Transmission case 28 Bearing member 30 Drive shaft 30S Spline part A Crawler traveling device B Cutting pretreatment part C Threshing device D Grain collection part F Body frame T Track frame X Axis

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-1-278887 (JP, A) JP-A 49-64407 (JP, U) JP-A 5-56770 (JP, U) (58) Survey Field (Int.Cl. ⁷ , DB name) A01D 67/00 B62D 55/10

Claims (2)

(57) [Claims] 1. Left and right crawler traveling devices (A), (A)
Combine equipped with a cutting pre-processing unit (B) so as to be able to move up and down with respect to the front part of a vehicle body (1) equipped with a threshing device (C) and a grain collecting unit (D). A track frame (T) supporting the vehicle body (1) with the left and right crawler traveling devices (A), (A);
The truck frame (T) is composed of a body frame (F) that is movable in the lateral direction, and the body frame (F) is provided with the pre-cutting section (B).
, A threshing device (C), and a grain collecting unit (D). The engine (14) and the power from the engine (14) are shifted with respect to the body frame (F). And a transmission case (24) for transmitting the drive shaft (30) to the left and right crawler traveling devices (A) and (A ). (T)
A combine which is connected to the drive sprockets (17) of the crawler traveling devices (A), (A), which are supported at a predetermined left-right direction interval, so as to be relatively movable laterally and to transmit torque. 2. The drive sprocket (17) is supported on the track frame (T) via a bearing member (28), and is viewed in a direction orthogonal to the axis (X) of the drive sprocket (17). A spline fitting hole is formed in the drive sprocket (17) at a position overlapping the bearing member (28), and a spline portion (30S) fitted in the spline fitting hole is formed on the outer surface of the drive shaft (30). The combine according to claim 1, wherein the combine is formed.