JPH11164613A - Vehicle body moving device in combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle body moving device improved in the steerability of a combine harvester through compensating its turning difficulty due to the imbalance between the left and right weights of the machine body by making use of the relative movement of the operating section and traveling section. SOLUTION: This device is provided with a relative movement mechanism which enables relative movement regulation, left and right of the machine body, of a traveling section A equipped with crawler traveling devices 1L, 1R, an engine and a driving section and an operating section B equipped with a reaping section, a threshing section (b), and grain containment section (c), and a steering control means which moves, toward the left side, relative to the traveling section A, the operating section B in association with the steering operation of the machine body toward the left side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine which comprises a working unit and a traveling unit which can be moved relative to each other, and more particularly, to a steering unit in a steering direction when an airframe is steered. The technology relates to a technique for obtaining advantages such as stability of a turning posture and improvement of small turning performance by laterally moving the turning position.

[0002]

2. Description of the Related Art Conventionally, a mowing part lateral slide structure in which a mowing part is movable to the left and right with respect to the machine body to obtain both a state suitable for middle splitting and a state suitable for round cutting. Is known (Japanese Patent Laid-Open No. 5-1538).
No. 41 publication).

[0003]

In a combine, a threshing unit is usually located on the left side of the fuselage, and a grain storage unit such as a Glen tank or a bagging hopper is located on the right side. Since the grains that have been threshed are stored in the grain storage section, the right side of the aircraft gradually becomes heavier. Therefore,
When turning around the headland, which always turns to the left, the left side of the aircraft, which is the center of the turn, gradually becomes lighter, so it is often difficult to turn than expected. In particular, depending on field conditions such as wet fields, several steering operations may be required, and there is room for improvement.

[0004] It is an object of the present invention to improve the steerability of a combine by compensating the difficulty of turning caused by the imbalance of the right and left weights of the airframe by using the relative movement between the working unit and the traveling unit. It is in.

[0005]

[Means for Solving the Problems] The first aspect of the present invention is to provide a traveling unit having a pair of right and left crawler traveling units and a working unit having a cutting unit, a threshing unit, and a grain storage unit. And a steering control means for moving the working unit to the left with respect to the traveling unit in accordance with the steering operation to the left of the aircraft. And

According to a second aspect of the present invention, a traveling unit having a pair of right and left crawler traveling units and a working unit having a cutting unit, a threshing unit, and a grain storage unit can be relatively moved and adjusted in the lateral direction of the machine body. In addition to a relative movement mechanism, a steering control means for moving the working unit relative to the traveling unit in the steering direction in accordance with the steering operation of the aircraft is provided.

According to the first aspect of the present invention, when the steering unit is steered to the left, the working unit shifts to the left with respect to the traveling unit, and the machine center of gravity can shift to the left. The movement of the center of gravity can be made to oppose the centrifugal force acting on the body in a turning outward direction. Therefore, the turning state during the steering of the aircraft can be reduced as compared with the case where the vehicle body does not move laterally, so that the action of the aircraft toward the outside of the turning can be reduced, and the turning can be made smaller than before, or the aircraft can be turned. The steerability is improved, for example, the tendency to swing outward is reduced.

[0008] Further, even when the ground condition is bad such as a wet field or a lot of ups and downs, the turning radius does not increase or is suppressed, and the steering is performed at the desired turning radius. It becomes easy to steer as possible. In the combine, when the grain is loaded in the grain storage unit and the aircraft tends to be right-weighted, the overall weight also becomes heavy.In this state, the drive speed is reduced and the left crawler belt to the braking operation state is moved to the left crawler belt. Since the load is light, it is dragged by the driving force of the right crawler belt, and the desired small left turn is hardly performed. Therefore, since the left turning is almost performed in the normal turning mode, the effect of improving the steerability by shifting the machine center of gravity to the left along with the left steering is remarkably exhibited.

According to the second aspect of the present invention, the steerability not only to the left but also to the right is improved. That is, in a situation such as before the harvesting operation or immediately after the start, the grain storage unit is empty or close to it, and the machine weight center is shifted to the left side where the threshing unit exists compared to the state where the kernel is stored to some extent or more. Often. Therefore, when the grain storage unit is in a light state and the right steering is performed during traveling to the field, running, setting, switchback turn, or the like, the working unit is moved to the right side with respect to the traveling unit to shift the machine body weight center. Advantages such as being able to move to the right side and being able to make a small turn to the right stably, and being able to turn without increasing the turning radius even when the ground condition is bad are obtained.

[Effect] In the combine according to the first or second aspect, when the left steering is performed, the working unit is moved to the left with respect to the traveling unit, and the machine center of gravity is shifted to the left side, which is the inside of the turn, so that it can make a large turn even in wet fields. Provided is a vehicle body moving device that can improve the left turning performance such as being able to make a small turn without performing, or being able to steer stably even at a somewhat high traveling speed, and improving the turning performance of a combine where most of the harvesting work is performed. did it.

In the vehicle moving device according to the second aspect, when the steering unit is steered to the right as well as to the left, the working unit also moves to the right with respect to the traveling unit. Could also be improved.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. Figure 1 shows a side view of the combine.
2 is a plan view, wherein a is a cutting section, b is a threshing section, c is a grain storage section, 1 is a crawler traveling device, 2 is an operating section, 3 is an engine 4 and a transmission 24. Power unit.

The reaping unit a includes a raising device 5, a reaping device 6,
It is provided with a vertical transport device 7 and the like, and can be moved up and down with respect to the machine body. The threshing unit b includes a feed chain 8, a handling room 10 having a handling cylinder 9, a swing sorting device 11, a straw cutter 12, and the like, and is mounted on the left side of the machine. Grain container c
Comprises a grain tank 13 for storing the grains sent from the threshing unit b, an unloader 14 for discharging the grains collected in the grain tank 13 outside the machine, and the like.

In this combine, the crawler traveling device 1
And a working unit B having a cutting unit a, a threshing unit b, and a grain storage unit c. The traveling unit A includes a cutting unit a, a threshing unit b, and a grain storage unit c. A moving mechanism 15 is provided.

As shown in FIG. 1, FIG. 4 to FIG.
Include left and right track frames 19, 19 each having a driving sprocket 16, a tension wheel 17, and a plurality of driven wheels 18.
And a traveling machine base 2 supporting these via an elevating mechanism 20.
1 and a traveling frame 27 for mounting and supporting the driving unit 2 and the driving unit 3, and includes front and rear hydraulic slide cylinders 22 and 23.

As shown in FIG. 1, FIG. 4, FIG. 5, and FIG. 7, the working section B mounts and supports a cutting section a, a threshing section b, a Glen tank 13, a fuel tank 26, and the like on a working frame 25. It is slidably supported in the left-right direction with respect to the traveling frame 27 by applying a rail structure. The rear hydraulic cylinder 23 is configured to penetrate both ends, and its pipe cylinder cylinder 23a is also used as a member connecting the left and right track frames 19, 19, and both ends of the piston rod 23A are connected to the left and right ends of the rear portion of the working frame 25. Connected to. Also, the front hydraulic cylinder 22
The cylinder tube 22a is fixed to the traveling frame 27, and both ends of the piston rod 22A are connected to the left and right ends of the front portion of the working frame 25.

As shown in FIG. 8, four rods 22A,
23A and the work frame 25 are connected via a rubber coupling F. The rubber coupling F includes a rubber portion 51 and mounting portions 50, 50 on both sides thereof. One mounting portion 50 is fixed to the ends of the rods 22A, 23A, and the other mounting portion 50 is fixed to the work frame 25, respectively. I do.

Each hydraulic cylinder has a piston rod 22A,
23A connects the left and right end rods 22c, 23c for forming the oil chambers 22b, 23b with the connecting pipe 22.
It is formed in a long shape connected by d and 23d. In other words, the working frame 25 is configured to be slidable left and right within a predetermined range with respect to the traveling frame 27 by the left and right hydraulic cylinders 22 and 23 being driven to move left and right. The situation of the slide movement is as follows.

That is, the amount of leftward projection of the left side plate 28 of the threshing unit b from the left crawler 1L to the left is substantially equal to the amount of rightward projection of the right side plate 13a of the Glen tank 13 from the right crawler 1R. , A standard position where the working unit B projects left and right and laterally from the traveling unit A by a predetermined amount [see FIG.
From the standard position to the moving position (see FIG. 3 (b)) where the working unit B has moved most to the left side opposite to the grain storage unit existing side with respect to the traveling unit A (see FIG. 3 (b)). The relative position between the working unit B and the traveling unit A is moved by the relative moving mechanism 15 including the cylinders 22 and 23. The moving distance between the standard position and the moving position is determined by the hydraulic cylinders 22, 23.
Is the operation length.

As shown in FIG. 5, FIG. 6, and FIGS. 9 to 11, an engaging means H capable of restricting the relative movement between the traveling frame 27 and the working frame 25 is provided. Is set to a state in which the engaging means H operates when a predetermined relative set position is reached. The work frame 25 is mounted on a plurality of inclined rollers 52 mounted on the traveling frame 27, and has a structure in which the roller 52 relatively moves by rolling on the rolling surface 53 on the work frame side. And
At two positions, that is, the position where the Glen tank 13 moves to the rightmost position and the position to the leftmost position, the rolling surface 53 is formed with recessed portions 53a, 53a into which the rollers 52 enter. At both positions, even if the positioning function of the hydraulic cylinders 22 and 23 is incomplete due to leakage or the like, the relative displacement between the traveling portion a and the working portion b does not first occur due to the operation of the engagement means H.

In this combine, a control circuit is provided so that various controls for moving the relative moving mechanism 15 are performed. That is, a grain amount detection stage 41 capable of detecting the amount of grain stored in the Glen tank 13 is provided.
Slide control means C for linking the grain amount detection stage and the relative movement mechanism 15 so that the working unit B moves to the left with respect to the traveling unit A as the amount of kernel stored in the slide unit 3 increases; The control device 37 is provided with mode switching means 39 for switching between an automatic control mode in which the control means C operates and a manual control mode in which the traveling unit A and the work unit B are relatively moved and adjusted by manual operation.

That is, as shown in FIG. 12, the electromagnetic control valves 38 of the front and rear hydraulic cylinders 22 and 23, the mode changeover switch 39, the left / right moving lever 40 for operating the electromagnetic control valve 38, and the lower part of the Glen tank 13 are provided. When the weight detected by the weighing scale 41 is the lightest (when there is no grain), the working unit B is in the standard position closest to the right, and the weighing scale 41 is connected to the control device 37. When the detected weight of 41 is the heaviest (when the grains are fully loaded), the function of the slide control means C is to automatically control the working unit B to the leftmost moving position. When the grain is fully loaded in the Glen tank 13 at the moving position, the weight balance in the left-right direction is set so that loads substantially equal to the left and right crawler traveling devices 1, 1 are applied. .

When the mode changeover switch 39 is switched to "automatic", the above-mentioned slide control means C is operated, and the working section B is automatically slid horizontally in accordance with the amount of collected grains in the Glen tank 13.

When the mode is switched to "manual", the electromagnetic control valve 38 is operated by operating the left / right moving lever 40, and the working unit B can be arbitrarily moved laterally. As shown in FIG. 5, a stroke sensor 49 of a linear potentiometer type or the like for detecting the movement of the rear hydraulic cylinder 23 is provided so that the left and right positions of the working unit B with respect to the traveling unit A can be fed back. That is, the working unit B moves so as to follow the operation position of the left / right moving lever 40, and moves to the standard position when the left / right moving lever 40 is operated to the far right in FIG. It moves to the movement position.

The left and right moving lever 40 is of an on-off type in which the center is neutral and the working unit B moves to the left when tilted to the left and moves to the right when tilted to the right. By moving the relative movement mechanism 15 by tilting operation and then returning to the neutral position, the working unit B may be operated to an intended position.

For example, when the automatic control mode is selected, the work unit B is shifted to the right before the start of the mowing and threshing work. When passing, it is conceivable that the mode changeover switch 39 is set to "manual" so that the working unit B is moved to the left to allow the passage.

Further, this combine is provided with steering control means I for moving the working unit B to the left with respect to the traveling unit A in accordance with the steering operation of the body to the left. That is,
A potentiometer 55 for detecting the operation position of the steering lever 54 and a steering control switch 56 are connected to the control device 3.
7, when the mode changeover switch 39 is in the "automatic" position and the steering control switch 56 is ON, the steering lever 54 is turned to the left.
When the steering operation is performed to incline the vehicle to the left, the work unit B is moved to the left side with respect to the traveling unit A from the state at that time, and the center of gravity is shifted inward to control the vehicle so that the vehicle can easily turn left.

The way in which the working unit B is moved to the left side is anyway to the limit, that is, to the moving position, to half (or the middle) of the distance between the current position and the moving position, and to the maximum moving position. Various methods such as shifting a predetermined stroke amount in advance are conceivable. Then, when the turning is completed and the steering lever 54 is returned to the neutral position, the position of the working unit B is controlled so as to return to the state before the turning. FIG. 13 shows a flowchart of the control by the steering control means I for reference.

Also, as shown in FIG.
More specifically, a limit switch 57 is provided at the right end of the driving unit 2 for contact type other object detection, and a dust sensor 58 is provided at the left side of the driving unit 2 to constitute a right movement preventing unit J. I have. That is, in a state where the working unit B is moving to the left with respect to the traveling unit A to some extent, when an obstacle such as running along a bank or a bank approaches the right side of the aircraft and the limit switch 57 detects and operates. The right movement preventing means J controls the working unit B so as not to return to the right side with respect to the traveling unit A from that state, thereby preventing the obstacle from contacting the working unit B beforehand. .

When the dust and dust generated in the reaping section a are pushed to the operating section 2 by a predetermined level or more during the reaping operation in which the direction switch 47 is operated, the working section B is moved to the traveling section A. Work environment improvement means K for moving to the left is configured. In other words, when dust reaches the driver in the driving unit 2, the work unit B is automatically moved away from the left side so as to prevent the dust from reaching the driver, thereby deteriorating the working environment in the driving unit 2. It is to prevent. As the movement form, there are a means for linearly increasing the left lateral movement amount as the dust detection amount increases, and a means for gradually increasing the left lateral movement amount.

As the dust sensor 58, an optical sensor that senses the decrease in illuminance caused by dust floating in the space between the light emitting and light receiving elements, or a pair of electrodes is provided, and the capacitance between them is determined by the presence of dust. Various things are possible, such as an electric type utilizing the change. In addition, weeding tool 4
The direction switch 47, which is a sensor for automatic steering control, which is provided at the base of 8 and acts in contact with the planted cereal stem, is well known, and a detailed description thereof will be omitted.

[Another Embodiment] A steering control means L may be employed in which the lateral movement of the body accompanying the turning is performed not only during left turning but also during right turning. That is, when the steering unit 54 is tilted to the right to make a right turn while the working unit B is at a position other than the standard position, the working unit B is moved with respect to the traveling unit A from that state. By moving it to the right, the aircraft center of gravity is shifted to the right, making it easier to turn right.

In this case, the working unit B is constructed so as to be able to move further to the right than the standard position shown in FIG. 3A. Even when the working unit B is at the standard position, the working unit B is steered to the right. B may be moved to the right.

[Brief description of the drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a plan view of the combine.

3A is a rear view when the working unit is at a standard position closest to the right side. FIG. 3A is a rear view when a working unit is at a moving position closest to the left side.

FIG. 4 is a side view showing a frame of a traveling unit and a working unit.

FIG. 5 is a plan view showing a frame of a traveling unit and a working unit.

FIG. 6 is a plan view showing a frame of a traveling unit.

FIG. 7 is a plan view showing a frame of a working unit.

FIG. 8 is a cross-sectional view showing the structure of a slide hydraulic cylinder.

FIG. 9 is a front view of a main part showing a slide structure between a traveling unit and a working unit.

FIG. 10 is a sectional side view showing an engagement means in the slide structure of FIG. 9;

FIG. 11 is a front view showing an engagement means.

FIG. 12 is a control block diagram.

FIG. 13 is a diagram showing a flowchart of control by the steering control means.

[Explanation of symbols]

 Reference Signs List 1 crawler traveling device 15 relative moving mechanism a cutting unit b threshing unit c grain storage unit A traveling unit B working unit I, L steering control means

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Katsuhide Kato 64, Ishizukita-cho, Sakai-shi, Osaka Inventor Masayuki Kumagai 64, Ishizukita-cho, Sakai-shi, Osaka Inside

Claims (2)

[Claims] 1. A relative movement mechanism capable of adjusting a traveling unit having a pair of right and left crawler traveling units and a working unit having a cutting unit, a threshing unit, and a grain storage unit in a lateral direction of a machine body. And a steering control means for moving the working unit to the left with respect to the traveling unit in accordance with a steering operation to the left of the body. 2. A relative movement mechanism capable of adjusting a traveling unit having a pair of right and left crawler traveling units and a working unit having a cutting unit, a threshing unit, and a grain storage unit in a lateral direction of a machine body. And a steering control means for moving the work unit with respect to the traveling unit in a steering direction in accordance with a steering operation of the fuselage.