JPH09205855A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To constitute a driving system for a travel device which allows a vehicle body frame system to move by constituting the vehicle body frame system so that the vehicle frame body system can move laterally about the system of the travel device. SOLUTION: A track frame T which supports a crawler travel device A and a vehicle frame F equipped with a reaping preprocess part, a threshing device C and a grain collection part D are so constituted as to move mutually and laterally, and the vehicle frame F is equipped with an engine and a transmission case 24 which changes the speed of the power from the engine and transmits it to the crawler travel device A. Then, a driving shaft 30 projecting from the transmission case 24 laterally to the right and left is coupled by splining with the driving sprockets 17 of the crawler travel device A so that lateral relative movement is made free and torque transmission is made free.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a cutting pretreatment section which is movable up and down with respect to a front part of a vehicle body having left and right crawler traveling devices, and a threshing device and a grain collecting section are mounted on the vehicle body. More specifically, the present invention relates to an improvement in technology for improving the weight balance in the left-right direction of a vehicle body.

[0002]

2. Description of the Related Art In a conventional combine, a thresher and a grain tank are mounted side by side at the center of the vehicle body, and the weight of the grain stored in the grain tank during the harvesting operation makes In many cases, the weight balance of the For the purpose of eliminating this inconvenience, the present applicant constructed a frame system including a cutting pretreatment unit, a threshing device, and a Glen tank for the crawler traveling device so as to be slidable in the lateral direction, and stored 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 grain tank is directed toward the inside of the vehicle body when the amount of grains is increased (for example, Japanese Patent Application No. 7-186846).

[0003]

As in the conventional example, in the structure in which the crawler traveling device is provided with a frame system provided with a mowing pretreatment section, a threshing device, and a Glen tank so as to be movable in the lateral direction, Since the frame system is provided with the engine, it is necessary to form a system for surely transmitting the power from the engine to the crawler traveling device even when sliding in the lateral direction. Further, the combine employs a structure in which the power from the engine is decelerated by a transmission case or the like and transmitted to the crawler traveling device. When the crawler traveling device and the frame system are configured to be relatively movable in the lateral direction, It is necessary to provide a structure that allows relative movement between the transmission case and the mission case, or between the mission case and the crawler traveling device.

Further, the harvesting pretreatment section of the combine has a structure in which the shift power from the transmission case is transmitted because it needs 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. In the case where the vehicle is configured to be relatively movable in the lateral direction, the mission case is supported by the frame system, and the transmission system between the engine and the mission case and the transmission system between the mission case and the pre-processing section are respectively separated. It is effective to configure the transmission system between the transmission case and the crawler traveling device with a telescopic structure by fixing the relative position. However, for example, in a structure in which a transmission line between the transmission case and the drive sprocket of the device for crawler traveling is provided with a spline structure or the like so as to be expandable and contractible, bending does not occur at the intermediate portion of the transmission shaft. Further, there is room for improvement because it is possible that the structure becomes complicated, such as a special need for a bearing member for holding the shaft center of the stretchable portion.

An object of the present invention is to construct a frame system including a pre-crop processing unit, a threshing device, and a Glen tank for a crawler traveling device so as to be movable laterally, and a mission case provided for the frame system. The point is that the power transmission shaft between the crawler traveling device and the drive sprocket does not bend and can be expanded and contracted.

[0006]

As described at the beginning, the first feature of the present invention is to provide a mowing pretreatment unit that can move up and down with respect to the front portion of a vehicle body having left and right crawler traveling devices. In a combine in which a threshing device and a grain collecting unit are mounted on a vehicle body, the vehicle body is composed of a track frame that supports the left and right crawler traveling devices, and a vehicle body frame that is laterally movable with respect to the track frame. In addition, the vehicle body frame is provided with the cutting pretreatment unit, the threshing device, and the grain collecting unit, and the engine and the power from the engine are changed to the left and right with respect to the vehicle body frame. Of the crawler traveling device, and a drive shaft protruding in the left-right direction from the mission case is laterally opposed to the drive sprocket of the crawler traveling device. Movable, and located at a point that is connected freely torque transmission, the action is as follows.

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

[Operation] According to the first feature described above, when the vehicle body frame laterally moves relative to the track frame, the transmission shaft projecting from the mission case in the left-right direction serves as a drive sprocket for the crawler traveling device. In contrast, relative movement in the lateral direction allows relative movement between the drive sprocket and the transmission shaft, and the number of parts can be reduced compared to a structure in which the intermediate portion of the transmission shaft is configured to be expandable and contractible. At the same time, since the drive sprocket that is rotatably supported on the side of the crawler traveling device expands and contracts, the bending of the shaft core of the transmission shaft does not occur.

According to the second feature, the spline fitting portion between the spline of the drive sprocket and the transmission shaft and the bearing member of the drive sprocket overlap each other when viewed in a direction orthogonal to the axis of the transmission shaft. Even when a strong external force such as tension from the crawler belt is applied, the bearing supports the drive sprocket, and the transmission shaft that fits in the drive sprocket in a spline shape supports the drive sprocket. Is stable, and at the same time, the bending of the shaft center of the transmission shaft is less likely to occur.

[0010]

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

As shown in FIGS. 1 and 2, a raising device 2 for causing planted culms and a root of the planted culms are provided in front of a traveling vehicle body 1 having left and right crawler traveling devices A, A. A cutting pretreatment unit B having a cutting device 3 for cutting and a conveying device 4 for conveying the cut culms is provided so as to be vertically movable by driving a hydraulic cylinder 5, and the cutting pretreatment unit for the traveling vehicle body 1 is provided. A threshing device C in which the cut culms from B are supplied to the feed chain 6 and a grain tank D as a grain collecting unit for storing grains from the threshing device C are mounted, and
A combiner is formed by arranging a driver unit including a driver's seat 7 and a control tower E at a position juxtaposed to the right of the pre-mowing processing unit B.

The threshing device C is a handling cylinder (not shown) for rotating the cut culms that are nipped and conveyed by the feed chain 6.
In addition to sorting and collecting the grains by sending the collected grains to the Glen tank D via the lifting device 8,
In addition, the waste straw after the threshing process is the waste straw cutter 9 at the rear end of the device.
It is configured to be shredded and discharged. The grain tank D is provided with a bottom screw 10 for sending the stored grains to the rear, and a vertical screw for sending the grains from the bottom screw 10 upward so as to send the grains from the bottom screw 10 to the outside of the grain tank. 11 and this vertical screw 1
1 is provided with a horizontal screw 12 for laterally feeding the grain from 1, and the grain discharge device is rotatable about the longitudinal axis with respect to the upper end of the vertical screw 11 and A horizontal screw 12 is provided so that the tip portion can be raised and lowered.

A step 13 for an operator to ride on is formed in the operation section, an engine 14 is arranged below the driver's seat 7, and a control tower E raises and lowers the pre-mowing processing section B. A single operation lever 15 for controlling the traveling direction of the traveling vehicle body 1 and an arch-shaped frame 16 are provided.

Further, in this combine, the traveling vehicle body 1 includes a system of a track frame T provided with a crawler traveling device A,
Body frame F equipped with threshing device C, Glen tank D, etc.
Of the vehicle body frame F, and the cutting pretreatment unit B is configured to be slidable laterally with respect to the system of the vehicle body frame F by a driving force of an electric motor (not shown). The cutting position for the system is adjustable (the adjusting structure is not described in detail). Further, in this combine, the system of the body frame F is configured to be laterally movable by a driving force with respect to the system having the track frame T, and when the weight of the grain stored in the grain tank D increases, the track frame is increased. By shifting the system of the body frame F laterally by an appropriate amount with respect to the system of T, the lateral weight balance is improved, and at the same time, the ground load of the left and right crawler traveling devices A is made uniform to improve the traveling performance. It is configured to maintain.

The crawler traveling device A includes the track frame T, a drive sprocket 17 at the front end, a plurality of ground contact wheels 18, a tension wheel 19 at the rear end that is positionally adjustable in the front-rear direction, and these. It has 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.
Are connected in a grid pattern, and a step frame 23 is integrally formed in a posture of projecting forward from the right side portion to form the step 13, and the step frame 23 is integrally formed at a front center portion of the vehicle body frame F in the left-right direction. A mission case 24 to which the power from the engine 14 is transmitted is fixed, and a transmission system for transmitting the power from the mission case 24 to the drive sprocket 17 is formed.

As will be described later, this transmission system is configured to be extendable and contractible so as to allow the lateral slide operation of the vehicle body frame F with respect to the traveling system. That is, as shown in FIG. 3, FIG. 5, and FIG. 7, the tubular support bosses 27 are fixedly mounted on the front end positions of the left and right track frames T with the lateral axis.
The tubular portion 17A of the drive sprocket 17 is fitted in and supported by a ball bearing 28, which serves as a bearing member, which is mounted inside the support boss 27. Further, tubular bodies 29, 29 are fixedly provided on both side surfaces of the transmission case 24, and a drive shaft 30 is supported by a ball bearing 28 mounted in the tubular body 29 in a free-rotating manner. 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 is formed.
And a spline portion 17S as a spline fitting hole formed on the inner surface of the drive sprocket 17 are fitted so as to be torque-transmittable and relatively movable in the direction of the lateral axis X. The position of this spline fitting is set to a position that overlaps with the ball bearing 28 installed in the support boss 27, and the length (overlap amount) that the drive shaft 30 fits inside the tubular portion 17A of the drive sprocket 17 is overlapped. Is configured so that the shaft centers of the respective shafts coincide with each other with high accuracy without increasing the angle and causing bending. Also, the support boss 27
On the other hand, a protective cylinder 31 having an inner diameter that allows the tubular body 29 to be fitted from the side of the support boss 27 toward the side of the tubular body 29 is provided. A bellows 32 made of rubber is formed in a state of connecting 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 mission provided on the body frame T. The relative movement of the case 24 with respect to the drive shaft 30 is allowed by the expansion and contraction of the spline fitting portion and the bellows 32, and the bellows 3
2 keeps the drive shaft 30 and the drive sprocket 17 airtight to prevent dust from entering, and the protective cylinder 31 prevents contact of the ground protrusion with the bellows 32 and prevents damage to the transmission system. ing.

As shown in FIG. 6, the front and rear ends of the left and right track frames T are connected and fixed to each other, and a pair of front and rear connecting frames 35 and 35 which are arched in a front-back direction are arranged. The gutter-like member 37 that is open upward is arranged in a horizontally long position on the upper part of each of the connection frames 35 with the support plate 36 in a vertical position, and the surfaces of the support plates 36 that face each other in the front-back direction are in the front-back direction. It is connected and fixed by a reinforcing frame 38.

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-shaped member 37 at the front position from above, and the gutter-shaped member at the rear position. The lateral frame 22 on the rear side of the vehicle body frame F is fitted into 37 from above, and the gutter-shaped members 37, 37
The control members 41, 41 for preventing the lateral frames 22, 22 from separating from the upper side are detachably fixed to the trough-shaped member 37 with bolts 42, so that the vehicle body with respect to the system of the track frame T. 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 inseparably connected to the system of the track frame T in the vertical direction.

Further, 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 connecting frames 35, 35 in a plan view, and the screw shaft 43 is interposed via a bearing member 44. It is rotatably supported on the lateral frame 22 of the vehicle body frame F, and a direct current motor 46 is provided via a speed reduction mechanism 45 so as to rotate and drive the screw shaft 43 in forward and reverse directions. Further, by providing the intermediate member 48 that is connected and fixed to the reinforcing frame 38 with the nut member 47 that is screwed into the screw portion 43A of the screw shaft 43, the rotation of the screw shaft 43 causes the system of the track frame T to be connected to the body frame. The F system is configured so that it can be slid laterally.

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

In this combine, when traveling on the road without storing grains in the grain tank D, the entire traveling vehicle body is set with the system of the body frame F set to the right stroke end with respect to the system of the track frame T. The weights are distributed so that the weight balance in the left-right direction is balanced, and during the harvesting work, 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 work is started. By an amount, or as the weight of the grain stored in the grain tank D increases due to the work, the knob 50 of the setting device is operated to move the system of the body frame F with respect to the system of the truck frame T. By shifting to the left by the required amount, it is possible to work with the weight balance in the left-right direction of the entire traveling vehicle body balanced. At the time of shifting operation, a screw type feeding mechanism arranged at an intermediate position of the connecting frame 35 provides a strong feeding force, and the force from the operating means does not generate a squeeze. Further, at the time of manufacturing the combine. 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]

Therefore, the power from the mission case provided in the frame system of the vehicle body can be transmitted to the drive sprocket of the crawler traveling device without bending the transmission shaft system, and the transmission shaft system can be reasonably operated. A combine capable of expanding and contracting is constructed (Claim 1). Further, by stabilizing the support position of the drive sprocket, expansion and contraction are allowed, but it is possible to perform transmission in a state in which the shaft center posture of the transmission shaft system is further stabilized (claim 2). .

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 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 the traveling transmission system.

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

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

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

FIG. 9 is a rear view showing the feeding mechanism and the electric motor.

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

[Explanation of symbols]

 1 vehicle body 14 engine 17 drive sprocket 24 mission case 28 bearing member 30 drive shaft 30S spline part A crawler traveling device B cutting pretreatment part C threshing device D grain recovery part F vehicle body frame T track frame X axis core

Claims (2)

[Claims] 1. Left and right crawler traveling devices (A), (A)
A combine equipped with a cutting pretreatment unit (B) capable of moving up and down with respect to a front portion of a vehicle body (1) including the vehicle, and having a threshing device (C) and a grain collecting unit (D) mounted on the vehicle body (1). And a track frame (T) for supporting the left and right crawler traveling devices (A), (A) on the vehicle body (1),
The vehicle body frame (F) is movable laterally with respect to the track frame (T), and the pre-cutting processing section (B) and the threshing device (C) are provided for the vehicle body frame (F). And the grain collecting section (D), and the engine (14) with respect to the body frame (F) and the power from the engine (14) are shifted to change the left and right crawler traveling devices (A). ), (A), and a transmission case (24) for transmitting to the drive shaft (30) protruding from the transmission case (24) in the left-right direction. ) Is a laterally movable combine and a torque-transmittable combine. 2. The drive sprocket (17) is supported by 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 with 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, which is formed in