JPH09327226A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the sensor to detect the relative height between the running machine body and a crawler type running gear from improvidently going out of order. SOLUTION: A couple of bell crank levers 27, 29 are vertically swingably held at their mid-parts to both sides of the running machine body 2, and the base side ends of the both bell crank levers 27, 29 are connected with a rod 28. The arms of the bell crank levers 27, 29 are set to the truck frames 7, 7 in a crawler type running gear 6 on its both right and left sides rotatably around the pivot, respectively, and the rear bell crank levers 29, 29 on both right and left sides are vertically rotated with hydraulic cylinders 31, 32, respectively, to adjust the relative height between the crawler type running gear 6 on both right and left sides and the running machine body 2 on its both right and left sides. In this case, a pair of the right and left sensors 45, 45 for detecting the relative height of the vehicles are arranged in the lower gap 46 between the first grain-flowing gutter 43 and the second one 44 and interlocked through the linking mechanisms, 56, 56 to the rear bell crank levers 29, 29.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine of a pair of left and right crawler belt type traveling devices which can adjust the height of the traveling machine body and the lateral inclination of the traveling machine body.

[0002]

2. Description of the Related Art One or both of a pair of right and left crawler track type traveling devices are moved up and down in accordance with unevenness and weakness of a field to control the left and right traveling bodies of a combine harvester on the upper and lower sides. Is, for example, Japanese Patent Laid-Open No. 1-291720.
Japanese Patent Publication No. 6-69329 and the like.

In Japanese Patent Publication No. 6-69329, since the pair of left and right crawler belt type traveling devices are individually lifted and lowered so as to correct the inclination when the traveling machine body is inclined, A hydraulic cylinder and a pair of front and rear bell crank levers connected to piston rods of the respective hydraulic cylinders are mounted on the traveling machine body side, and the rear end of each bell crank lever is connected to a track frame in a crawler-type traveling device for traveling. The crawler type traveling device is configured to move up and down relatively to the machine body, and the relative height of each of the right and left crawler type traveling devices with respect to the left and right of the machine body is detected by detecting the movement amount of the piston rod of each hydraulic cylinder. It has been proposed that the relative height detecting means for detecting is arranged on the lateral outer surface of the traveling machine body.

[0004]

However, in the crawler type traveling device, since dirt or mud adhered to the surface of the crawler belt is carried to the upper side of the traveling device close to the traveling body during traveling in the field,
There has been a problem that the relative height detecting means is apt to be covered with mud, which causes malfunction or failure of the relative height detecting means.

In Japanese Patent Publication No. 6-69329, the volume type relative height detecting means is fixed to the outer side surface of a bell crank lever which rotates when the crawler belt type traveling device is driven up and down. , The communication line for transmitting the detection signal of the relative height detection means to the electronic control device mounted on the traveling body is constantly swaying, or the communication line is subjected to the weight / impact of adhesion of mud or soil. There was also the problem of causing a wire break accident.

The present invention aims to provide a combine that solves this problem.

[0007]

In order to achieve this technical object, the combine of the invention described in claim 1 has a pair of left and right under a traveling machine body in which a threshing device and a grain tank are mounted in a left-right parallel manner. A combiner comprising a pair of left and right raising and lowering drive means for independently raising and lowering the crawler type traveling device, and a control device for operating the raising and lowering drive means so as to maintain the horizontal inclination angle of the traveling machine body at a predetermined angle. A pair of left and right relative vehicle height sensors for detecting the relative height between the crawler belt type traveling device and the traveling machine body are independently associated with the pair of left and right elevating and lowering drive means, and A pair of relative vehicle height sensors are arranged on the lower surface of the threshing device or on the traveling machine body at a lower position between the threshing device and the grain tank.

The invention described in claim 2 is the same as claim 1.
In the combine as described in 1, the arm portions of a pair of front and rear bell crank levers, each of which has a midway portion pivotally supported on the traveling body side in a vertically rotatable manner, are pivotally attached to the track frames of the left and right crawler belt type traveling devices, respectively. The pair of left and right elevating drive means so that a pair of left and right hydraulic cylinders that extend and contract in the direction and are connected to operate the rear bell crank lever are arranged between a pair of left and right longitudinal main frames of the traveling machine body. And each of the hydraulic cylinders and the relative vehicle height sensors are interlocked with each other via a link mechanism.

[0009]

According to the configuration of the invention described in claim 1, the crawler belt type traveling device can be operated regardless of the inclination of the field scene by independently operating the left and right raising and lowering drive means. It is possible to control the relative vehicle height by changing the traveling vehicle and the relative vehicle height so as to maintain the left and right inclination angles of the traveling vehicle horizontally or at an arbitrary angle. It can be sensed by the detection result of a pair of left and right relative vehicle height sensors that are independently associated with each other.

Since the pair of left and right relative vehicle height sensors are arranged at the lower surface of the threshing device mounted on the traveling machine body or between the threshing device and the grain tank, the pair of left and right crawler tracks are separated from each other. This means that the relative vehicle height sensor will be less likely to be covered with dirt and mud carried by the crawler track toward the lower surface of the traveling vehicle during traveling, and the relative vehicle height sensor will not malfunction or malfunction. Produce an effect. In particular, on the lower surface side of the threshing device, there are upper and lower uneven parts such as between the first-flow grain trough and the second-flow grain trough, so if the relative vehicle height sensor is arranged using the gap between the irregularities,
This has the effect of eliminating the need to separately secure an arrangement space.

Further, as described above, the relative vehicle height sensor is disposed on the lower surface of the traveling machine body as described above.
Compared to placing it outside the side surface of the traveling body, there is no risk of touching an external object when traveling, such as a grain culm in the field,
This also eliminates the cause of failure of the relative vehicle height sensor. Further, according to the configuration of the invention described in claim 2, the left and right pair of vehicle height sensors are arranged on the lower surface of the threshing device mounted on the traveling machine body or between the threshing device and the grain tank. Since the front-rear movement amount of the piston rods of the left and right hydraulic cylinders as the lifting drive means is transmitted to each relative vehicle height sensor via the link mechanism, the relative vehicle height sensor itself is associated with the vertical movement of the crawler type traveling device. Does not move. Therefore, the communication line for transmitting a signal from the relative vehicle height sensor to the control device can also be fixed and wired to the traveling body, so that the communication line does not constantly sway, and the mud or soil lifted by the track is Since it does not directly collide with the communication line, it is possible to prevent disconnection accidents.

[0012]

Embodiments of the present invention will be described below. In the figure, reference numeral 1 denotes a combine, which is a pair of left and right crawler type (traveling crawler type) traveling devices 3 and 3 for supporting a traveling machine body 2 and a threshing device 4 mounted on the upper surface of the traveling machine body 2. And a cutting pre-processing device 5 mounted on the front part of the traveling machine body 2 so as to be able to move up and down.
And is constituted by.

The pair of traveling devices 3, 3 are composed of a pair of left and right traveling crawlers 6 and a front and rear longitudinal track frame 7 arranged inside both of these traveling crawlers 6. The both traveling crawlers 6 are A drive wheel 10 at the tip of a mission final 9 that projects left and right from a mission case 8 attached to the traveling machine body 2, and a tension wheel 12 attached to the rear end of the track frame 7 via a tension mechanism 11. And a plurality of grounding wheels 13 for the crawler 6 are attached to the track frame 7 and grounding wheels 14 and 15 are provided at both ends. A link 16 is rotatably attached to a pin shaft 17.

The traveling machine body 2 includes a pair of left and right main frames 2a, 2a in the front-rear longitudinal direction, and a lateral member 18 having a U-shaped cross section for connecting the front and rear portions thereof in the lateral direction. A pair of left and right elevating and lowering driving means for independently elevating and lowering the left and right crawler belt type traveling devices 3 and 3, and a supporting shaft 20,
A pair of front and rear bell crank levers 27, 29 pivotally supported via the respective upper and lower pivots 21, a rod member 28 for connecting the upper ends of the front and rear bell crank levers 27, 29 back and forth, It comprises a pair of left and right hydraulic cylinders 31, 32 that extend and contract in the front-rear direction and actuate the rear bell crank levers 29, 29.

That is, when mounting the midway portions of the bell crank levers 27 and 29, which are substantially L-shaped in side view, to the traveling machine body 2 side via the support shafts 20 and 21, the lateral members 18 and 1 are arranged.
9 are provided so as to protrude toward the inner diameter side of the traveling crawler 6. Support shafts 20 and 21 are provided in the two lateral members 18 and 19, respectively. 19, the support shafts 20 and 21 are connected to the bearing bodies 22 and
22 and the bearing members 24, 24 at the central portion, which are detachably attached to the respective lateral members 18, 19, and at the both distal end portions of the front lateral member 18 among the lateral members 18, 19,
The front end of the mission final 9 protruding from the transmission case 8 is detachably attached via a bracket 25, and the traveling crawler is attached to both front ends of the rear horizontal member 19 of the two horizontal members 18, 19. 6 is mounted on the upper side of the guide carrier roller 26.

The bell crank levers 27 and 2
The rearward-facing arms 9 are pivotally connected to the track frames 7, 7 of the left and right crawler-type traveling devices via pins 33, 34, respectively. Further, through holes 35 and 36 formed in the lateral members 18 and 19, front and rear bell crank levers 27 and
The upward base of the 29 is made to project upward, and thereafter the upward bases of the bell crank levers 29, 29 are connected by a longitudinally extending rod member 28. On the other hand, the rear bell crank levers 29 and 29
A pair of left and right hydraulic cylinders 31 and 32 for actuating the hydraulic cylinders 31 and 32 are arranged between a pair of left and right longitudinal main frames 2 a and 2 a of the traveling body 2 and rotatably connected to piston rods 37 and 37 of the hydraulic cylinders 31 and 32. The intermediate arms 38, 38 and the upwardly directed bases of the rear bell crank levers 29, 29 are rotatably connected by a pin shaft 39 (see FIGS. 5 and 6). With this configuration, the traveling body 2
The piston rods of the hydraulic cylinders 31 and 32 arranged substantially in parallel in the height direction protrude greatly, and the front and rear bell crank levers 27 and 29 are largely rotated, so that the crawler type traveling device 3 3, the intermediate arms 38, 38 bend and rotate with respect to the upward bases of the rear bell crank levers 29, 29, so that the substantially horizontal postures of the hydraulic cylinders 31, 32 do not largely change. Hydraulic cylinders can be arranged on the body 2 at locations with small vertical clearances.

Next, referring to FIGS. 5 and 6, a pair of left and right relative vehicle height sensors 45, 45 for detecting a relative height between the left and right crawler belt type traveling devices 3, 3 and the traveling body 2.
The configuration of will be described. As shown in FIGS. 1 and 2,
The threshing device 4 is arranged on the right side in the traveling direction of the traveling machine body 2 and the grain tank 40 is arranged on the left side. An operator's cab 41 is provided in front of the grain tank 40. The grains (hulls and the like) threshed by the threshing device 4 are temporarily stored in a grain tank 40, and when a predetermined amount is loaded, the grains are discharged to an external carrier or the like via a discharge auger 42. The horizontal cylinder of the discharge auger 42 is configured to rotate horizontally and vertically by a rotation drive actuator (not shown).

A pair of left and right relative vehicle height sensors 45, 45 composed of the rotary potentiometer are provided on the lower surface of the threshing device 4 or between the grain tank 40 and the threshing device 4 and the traveling machine body 2. The threshing device 4 is disposed in the upper and lower gaps, and specifically, in the rearward and leftward portions of the pair of left and right main frames 2a, 2a in the longitudinal direction of the traveling machine body 2, on the rear side of the upper surface of the traveling crawlers 6, 6. Mountain-shaped gap 46 between the first-flow grain gutter 43 and the second-flow grain gutter 44
Is located in. In addition, you may arrange | position in the mountain-shaped space | interval between the first flowing gutter 43 and the Karino Juan of the front position.

The structure of the gap 4 will be described in more detail.
6, a pair of left and right main frames 2a, 2
The support plate 47 having a downward U-shaped cross section for connecting between a and a is fixed with a bolt or the like, and a pair of left and right relative vehicle height sensors 45 and 45 are fixed above the support plate 47.
6 and 56 are linked. That is, the link mechanisms 56, 56 have operating shafts 49, 50 rotatably supported at both ends by a pair of bearings 48 on the lower surface side of the support plate 47, respectively. 49,
The first arms 51, 51 protruding downward at one end of the 50 and the pin shaft 39 on the base side of the rear bell crank levers 29, 29 are pin-connected by connecting rods 52, 52 extending longitudinally. The tip of the second arm 53, 53 projecting from the other end of each of the operating shafts 49, 50 and the relative vehicle height sensor 4
5, 45 rotating arms 54, 54 and vertical rods 55, 5
It is configured by pin connection at 5. In this case, a hole (not shown) is formed in the support plate 47 so that each of the second arms 53 and the vertical rod 55 can move. Further, the relative vehicle height sensors 45, 45 are prevented from being covered with dirt or mud by a cover body 57 which detachably covers substantially the entire length of the support plate 47.

With this configuration, as is apparent from FIG. 5, the piston rod 37 of each hydraulic cylinder 31 (32).
(To the rear of the traveling machine body 2), the tip side of the rear bell crank lever 29 rotates downward via the intermediate arm 38 (see the solid line state in FIG. 5), and the track frame 7
Moves downward from the traveling body 2, the relative height between the traveling body 2 and the lower surface of the crawler-type traveling device 3 increases, and the traveling body 2 becomes higher with respect to the field scene. At this time, the connecting rod 52 moves backward, and the first arm 51, the operating shaft 49 (50), and the second
Relative vehicle height sensor 4 via arm 53 and vertical rod 55
5 pivots in a counterclockwise direction in FIG.

In contrast to the above, each hydraulic cylinder 31 (32)
When the piston rod 37 is moved backward (to the front of the traveling body 2), the distal end side of the rear bell crank lever 29 rotates upward via the intermediate arm 38 (see the state shown by a two-dot chain line in FIG. 7 approaches the traveling body 2, the relative height between the traveling body 2 and the lower surface of the crawler-type traveling device 3 becomes small, and the traveling body 2 becomes lower with respect to the field scene.
In this case, since the connecting rod 52 moves forward, the turning arm 54 of the relative vehicle height sensor 45 turns clockwise as shown by a two-dot chain line in FIG.

In this way, the left and right elevating and lowering driving means swing the pivotally the pair of front and rear bell crank levers 27 and 29 at the same time, so that the track frame 7 is moved to the traveling machine body 2. Since it can move up and down with respect to each other, it is possible to adjust the height of the traveling machine body 2 and the left and right inclination of the traveling machine body 2 and to relate the expansion and contraction amounts of the left and right hydraulic cylinders 31, 32 respectively. By activating the relative vehicle height sensors 45, 45,
The relative height of the left and right traveling devices 3 and 3 with respect to the left and right of the traveling body 2 can be detected.

As shown in FIG. 7, a volume type vehicle height setting device 61 for setting an average value of the relative vehicle heights of the left and right of the traveling machine body 2 is provided on the operation panel portion 60 in the cab 41.
And a volume type tilt angle setting device 62 for setting the horizontal tilt angle of the traveling machine body 2 with respect to the horizontal plane, various display panels 63, 64, 65, and a cross for adjusting the vehicle height and the horizontal tilt by manual operation. Directional tilt type manual lever 6
6 and a work operation lever 67 for cutting and threshing work, traveling, etc., and the left and right steering of the traveling machine body 2 is provided with a round handle 68.
Execute at. Further, when the knob is set to a predetermined angle, the vehicle height setter 61 is automatically controlled by the microcomputer type control device 70 of FIG. 8 so that the vehicle height becomes the set target value, and the knob is set to zero. When set to the position, its automatic control is turned off. When the cross direction tilt type manual lever 66 is tilted, the vehicle height automatic control is changed from ON to O so that the work command due to the movement is prioritized.
Switch to FF.

The control device 70 has a CPU for executing various arithmetic processes, a ROM (read-only memory) in which various control programs and initial values necessary for the arithmetic processes are stored in advance, and the arithmetic processes are executed. A RAM (temporarily readable / writable memory) for temporarily storing various data (detection value, setting value, etc.) used for the operation, an interface, and the like are provided.

The input interface of the control device 70 includes a threshing switch 71 for turning on a drive transmission clutch (not shown) at the start of reaping and threshing, the vehicle height setting device 61, and an inclination angle setting device. 62, an inclination sensor 72 of electrostatic capacitance type or the like arranged in the operation panel section 60, and the pair of left and right relative vehicle height sensors 45, 45.
And an ultrasonic type ground height sensor 73 and the like are connected. The tilt sensor 72 detects the tilt angle of the traveling machine body 2 in the left-right direction with respect to the horizontal, and the tilt angle setter 62 is provided.
Based on the comparison with the set value by, the electromagnetic control valves 74 and 75 for the left and right hydraulic cylinders 31 and 32 are held in order to keep the horizontal inclination of the traveling machine body 2 horizontal or at an arbitrary inclination angle.
It is used to operate the electromagnetic solenoids 74a, 74b (75a, 75b).

Further, the relative vehicle height set by the vehicle height setting device 61 (the traveling vehicle body 2 of the left and right crawler track type traveling devices 3, 3).
When the information of the average height) is input to the control device 70, the left and right hydraulic cylinders are set so as to reach the target (set) relative vehicle height in the state of left and right inclination based on the set value of the inclination angle setting device 62. Each electromagnetic control valve 7 for 31, 32
4, 75 electromagnetic solenoids 74a, 74b (75a, 7
5b) is activated. In this case, the control of the left-right inclination is maintained during the lifting control.

The ground height sensor 73 is arranged in the front surface of the lower surface of the pre-cutting device 5 toward the field scene (lower surface), and is used when the cutting height of the grain culm is controlled by the pre-cutting device 5. This is for controlling the operation of a lifting hydraulic cylinder (not shown) so that the cutting blade in the pre-mowing treatment device 5 is positioned at a height preset by a cutting height setting device (not shown).

Therefore, when the combine is put into the field and the threshing clutch is turned on to start the cutting and threshing work, when the field is a soft land such as a wet field, only six running crawlers on one side or both sides are on the ground. Since the ground height between the field scene and the lower surface of the traveling machine body 2 becomes relatively low, it is preferable to set the relative vehicle height set by the vehicle height setter 61 to a comparatively high value.

When a large number of grains are loaded in the grain tank 40, the right side of the traveling machine body 2 having the grain tank 40 sinks and becomes cheaper. Therefore, the vehicle height setting device 61 and the inclination angle setting device 62 are used. It is preferable that the set value is changed to change the laterally inclined posture of the traveling machine body toward a stable direction due to uneven distribution of the center of gravity of the traveling machine body. The left and right relative vehicle height sensors 45, 45 are arranged on the lower surface of the threshing device 4 mounted on the traveling machine body 2 or the threshing device 4 and the grain tank 40.
Since it was set between and,
Therefore, dirt and mud carried by the crawler track toward the lower surface of the traveling vehicle body 2 will be separated from the location of the relative vehicle height sensor 4
As a result, the situation in which the relative vehicle height sensors 45 and 45 are covered with less is reduced, and there is no effect that the relative vehicle height sensors 45 and 45 malfunction or break down. Particularly, on the lower surface side of the threshing device 4, there are upper and lower uneven portions such as between the first-flow grain trough 43 and the second-flow grain trough 44, so that the relative vehicle height sensor 45, By arranging 45, there is an effect that it is not necessary to separately secure an arrangement space.

Further, since the relative vehicle height sensors 45, 45 are arranged on the lower surface of the traveling machine body 2 as described above, compared to the conventional arrangement outside the side surface of the traveling machine body 2, the vehicle travels. At times, there is no possibility of touching an external object, such as a grain culm in the field, which also causes the relative vehicle height sensors 45, 4
The cause of failure of 5 can be eliminated. Further, the location of the pair of left and right relative vehicle height sensors 45, 45 is the lower surface of the threshing device 4 mounted on the traveling machine body 2 or the threshing device 4
And between the grain tank 40 and the piston rod longitudinal expansion / contraction amount of each of the left and right hydraulic cylinders 31 and 32 as the elevating drive means are transmitted to the relative vehicle height sensors 45 via the link mechanisms 56 and 56. Therefore, the relative vehicle height sensor 4
5, 45 themselves do not move as the crawler belt type traveling device 3 moves up and down. Therefore, the communication line for transmitting a signal from the relative vehicle height sensors 45, 45 to the control device 70 is also the traveling body 2.
Since it can be fixed and wired to the communication line, the communication line does not constantly sway, and mud and dirt lifted by the crawler belt does not directly collide with the communication line, so that a disconnection accident can be prevented. .

[Brief description of drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a plan view of the combine.

FIG. 3 is a bottom view of the combine.

FIG. 4 is a plan view showing a relationship between a traveling body and a crawler traveling device.

FIG. 5 is a side sectional view of a main part.

FIG. 6 is a plan view taken along line VI-VI of FIG. 5;

FIG. 7 is a perspective view of a main part in a cab.

FIG. 8 is a functional block diagram of a control device.

[Explanation of symbols]

 2 Traveling aircraft 2a Main frame 3 Track type traveling device 4 Threshing device 6 Traveling crawler 7 Track frame 27,29 Bell crank lever 31,32 Hydraulic cylinder 40 Grain tank 43 First-flow grain gutter 44 Second-flow grain gutter 45,45 Relative vehicle height sensor 51 First arm 52 Connecting rod 53 Second arm 54 Rotating arm 55 Vertical rod 56 Link mechanism

Claims (2)

[Claims] 1. A pair of left and right elevating and lowering drive means for independently elevating and lowering a pair of left and right crawler belt type traveling devices below a traveling machine body on which a threshing device and a grain tank are mounted side by side in parallel. A pair of left and right relatives for detecting a relative height between the crawler belt type traveling device and the traveling machine body, the combine being provided with a control device for operating the elevating and lowering drive means so as to maintain a tilt angle at a predetermined angle. A vehicle height sensor is independently associated with the pair of left and right lifting drive means, and the pair of left and right relative vehicle height sensors are provided on the lower surface of the threshing device or between the threshing device and the grain tank. A combine characterized by being placed on the traveling aircraft body at a lower position. 2. The arm portions of a pair of front and rear bell crank levers, each of which has a midway portion pivotally supported on the traveling machine body in a vertically rotatable manner, are pivotally attached to the track frames of the left and right crawler belt type traveling devices, respectively. The pair of left and right elevating and lowering drive means are arranged so that a pair of left and right hydraulic cylinders that extend and contract to be connected to operate the rear side bell crank lever are arranged between a pair of left and right longitudinal main frames of the traveling machine body. The combine according to claim 1, wherein each hydraulic cylinder and each relative vehicle height sensor are interlocked and coupled via a link mechanism.