JPH0513886U - Crawler type traveling device in combine - Google Patents

Abstract

(57) [Summary] [Purpose] When the traveling machine body 1 of the combine is inclined in a wet field, etc., the traveling machine body is adjusted to a horizontal state without changing the cutting height of the pretreatment unit 2. [Configuration] Out of the left and right traveling bodies 7, 8, only the traveling body 7 on the side of the already-cut land is linked to the front and rear link mechanisms 20, 2 extending over the traveling frame 25 and the machine body frame 1a constituting the traveling body.
1, and a single operating cylinder 26 connected between the machine body frame and the link mechanism so as to be positionally adjustable on the machine body side and vertically movable with respect to the traveling body 8 on the uncut area.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a crawler type traveling device in a combine.

[0002]

[Problems to be solved by conventional techniques and devices]

 Conventionally, in a combine provided with a crawler type traveling body, when performing mowing work in a soft field such as a wet field, the traveling body on the side of the already-cut land has low crawler traces in the front cutting process as shown in Fig. 11. It was caught in a place or the grain storage section was filled with grains and the left and right center of gravity of the traveling machine body was biased toward the grain storage section side, and the traveling machine body was inclined to the cut land side. .. As a result, the traveling aircraft tended to run with the inclination side constantly, and the driver had to continuously operate the steering lever so as to face the uncut area. In addition, when the traveling machine tilts toward the already-cut area, the pre-processing section itself for cutting the stems also tilts, which causes the cutting height to fluctuate left and right, which is left unhandled in the subsequent threshing work, or This will increase the threshing load. Moreover, in the case of fall culm, the pretreatment section is particularly lowered with respect to the traveling machine body to try to cause the grain culms without leakage, but when the pretreatment section is lowered, the cutting blade on the sloped slaughtered field side is lowered. Since the muddy soil must be cut, the pretreatment section cannot be lowered below the specified amount.Therefore, the grass cuttings on the uncut land side or the raising device must be lifted without stopping the mowing work. However, the work efficiency was significantly reduced due to the leakage of grain culms.

Therefore, when the combine fuselage tilts to the left and right, the crawler type traveling devices provided on the left and right sides of the fuselage are individually lifted and lowered with respect to the fuselage to hold the fuselage horizontally. As is known from Japanese Patent Publication No. 51-145724, in this one, when the machine body is tilted to the left and right, support rods provided on the left and right and front and rear sides of the machine body are provided with crawler type traveling devices provided on both the left and right sides of the machine body. Similarly, since the hydraulic cylinder devices provided on the left and right and the front and rear are respectively configured to move up and down with respect to the machine body, the cost of the device itself is relatively high and the control is complicated. In addition, when the traveling body on the side of the already-cut land is stuck in the recess of the field, only the traveling device on the side where it is inserted is moved up and down, and when it escapes from the recess, only the traveling device on that side is moved upward. By raising and lowering, the machine can be maintained horizontally, and the cutting height of the pretreatment section for the field scene can be kept constant before and after adjusting the elevation. It is not possible to determine whether the traveling body is stuck in the concave or convex portion or is riding up.Temporarily raising or lowering the traveling device on the opposite side of the uncut land, or contradictory to the left and right traveling devices. If it is moved up and down, the height of the pretreatment unit with respect to the field scene will fluctuate overall, and there is a risk that the pretreatment unit will have to be moved up and down again to adjust the cutting height again. .

[0004]

[Means for Solving the Problems]

 The present invention was devised with the object of providing a crawler type traveling device in a combine that can eliminate these drawbacks in view of the above-mentioned circumstances. In the combine with the pretreatment section at the front of the traveling machine body, the threshing section at the uncut side, the driver's seat and the grain storage section at the already cut side, Of the traveling bodies, only the traveling body on the cut land side is linked by the front and rear link mechanism that spans the traveling frame and the machine frame that make up the traveling body, and the single working cylinder that is connected between the machine frame and the link mechanism. It is characterized in that it is provided on the body side of the machine body so that its position can be adjusted freely, and is independently displaced downward with respect to the running body on the uncut area.

[0005]

[Action]

 According to the present invention, with this configuration, the traveling body on the side of the cut land is stuck in a low place such as a crawler trace in the previous work process, or the amount of accumulated grains in the grain storage section is increased and the traveling body is already present. If the vehicle is tilted to the cut side, adjust only the moving body on the cut side toward the bottom to correct the attitude of the machine to a substantially horizontal state. If, as a result of the escape from the recess or discharge of the grain from the grain storage unit, the conversely the aircraft leans toward the uncut area, only the running body on the cut land side should be adjusted upward. Return the aircraft to its original horizontal position. In this way, according to the present invention, the running device on the side of the already cut land is fitted into a low place such as the crawler trace in the previous work stroke, or the center of gravity of the machine is moved to the side of the already cut land due to the increase in the harvested grains. By adopting a configuration in which only the traveling body on the cut grass side, which is the main cause of the fluctuation of the machine body tilting factor, is positionally adjustable on the machine body side, only the traveling body on the machine body tilting factor side is adopted. It is designed so that it can be precisely moved up and down to maintain the horizontal state of the traveling aircraft.

Therefore, according to the present invention, of the left and right crawler-type traveling bodies, only the traveling body on the already-cut-ground side is linked to the front and rear link mechanisms extending between the traveling frame and the body frame, and between the body frame and the link mechanism. The position of the traveling machine can be controlled horizontally by installing the position adjustment on the machine body side by a single connected cylinder, so the position of the left and right crawler type traveling bodies can be adjusted individually. This will enable a significant cost reduction compared to what is provided. In addition, the present invention fixes the traveling body on the uncut area side to the body side of the machine body so as to suppress leakage caused by the grass body or the raising device on the uncut area side as much as possible, and further when the machine body tilts. In this method, only the moving body on the side of the already cut land is moved up and down, and the pretreatment section is returned to the horizontal state.Therefore, the fluctuation of the cutting height on the left and right is reduced, and the efficiency of cutting work on the fall culm is reduced. It is designed to be able to work, and the left and right traveling bodies are individually adjusted in position, the cutting height is changed before and after the adjustment, and the cutting height is readjusted again. Is eliminated.

[0007]

【Example】

 Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a combine traveling machine, and the traveling machine body 1 includes a pretreatment unit 2 having a grass body 2a, a raising device 2b, a cutting blade 2c and the like at the front portion, and a threshing unit 3 at the uncut side. Further, as in the conventional case, the grain storage section 4, the driver's seat 6, and the post-processing section 5 are arranged at the rear side of the cut land side as in the conventional case. Reference numerals 7 and 8 denote crawler-type traveling bodies on the cut-side and uncut-side, respectively. The drive sprockets 9 and 9a of both traveling bodies 7 and 8 are drive shafts 11 divided into left and right in the mission case 10. , 11a are interlocked with each other and are driven separately by the dynamic force from the engine (not shown) side. The axle case 12 of the already-cut-ground side traveling body 7 is an axle holder fixed to the mission case 10. 14 is rotatably supported by a bearing 13 via a bearing 13, and the axle case 15 of the uncut land traveling body 8 is integrally fixed to the axle holder 14 side by a bolt 15a.

On the other hand, reference numerals 16 and 17 denote support arms vertically hung on the front and rear sides of the machine body frame 1a of the traveling machine body 1. At the lower ends of the support arms 16 and 17, pedestals 18 and 19 are supported. ing. Brackets 22 and 23 are rotatably attached to distal end boss portions 20a and 21a of link arms 20 and 21, which are rotatably supported on the ends of the pedestals 18 and 19 on the side of the cut land. The bracket 22, which is fitted but pivotally supported on the front side link arm 20, has the front end portion of the traveling frame 25 pivotally connected, and is also connected to the axle case 12 on the cut land side via the arm 24. Has been done. On the other hand, the rear bracket 23 is pivotally connected to the rear end of the traveling frame 25 via the arm 24a, whereby the cut-ground side traveling body 7 uses the pedestals 18 and 19 as a pivotal support shaft. In addition, the link arms 20 and 21 are attached to the traveling machine body 1 side by a parallel link mechanism that serves as a link rod, and can be displaced in parallel to the front lower side with respect to the uncut land traveling body 8. There is. Further, 26 is an operating cylinder whose one end is pivotally connected to the machine body frame 1a, and the other end of the operating cylinder 26 is connected to the boss portion 20b of the front link arm 20 via the operating arm 27a. In the state where the operating cylinder 26 is contracted, the cut-ground side traveling body 7 is located at the same position as the un-cut-ground side traveling body 8, but the pressure oil from the hydraulic pump 29 is operated by operating the operation lever 28. By being press-fitted into the operating cylinder 26 and extending, the already-cut-ground-side traveling body 7 can be adjusted to move relative to the uncut-side traveling body 8 toward the lower front side. In the figure, 30 is a switching valve which is switched by operating the operating lever 28.

In the embodiment of the present invention configured as described above, as the traveling machine body 1 travels, the stem culms cut by the pretreatment unit 2 are threshed by the threshing unit 3, and then the posttreatment unit 5 The grain that has been appropriately post-treated with the above-mentioned method and discharged to the outside of the machine and then threshed is temporarily stored in the grain storage unit 4. 7 may get caught in the crawler traces generated during the pre-mowing process. Further, as the grain is stored in the grain storage portion 4 as the mowing work is performed, the machine body center of gravity is displaced to the right side, and the traveling body is inclined to the already-cut area. In this case, in the present invention, the operation lever 28 is operated to extend the operating cylinder 26 so that the already-cut land-side traveling body 7 is relatively moved toward the lower front side with respect to the uncut land-side traveling body 8. Then, the body 1 is corrected so as to be in a substantially horizontal posture. That is, when the cut land side traveling body 7 gets stuck in the crawler trace of the previous stroke or the number of grains increases in the grain storing portion 4, the traveling machine body 1 becomes in an unstable traveling state in which the cut land side is inclined low. When the operating lever 28 is operated to extend the operating cylinder 26, the operating arm 27a is pushed forward to forcibly rotate the link arm 20 around the pedestal 18, which results in crawler marks. The already cut land side traveling body 7 that is fitted into the front and rear pedestals 18 and 19 moves forward relative to the uncut land side traveling body 8 using the link fulcrums as link spindles, and the inclination of the traveling body 1 is eliminated. It Then, by returning the operation lever 28 to the neutral position at the time when the traveling body 1 is in a substantially horizontal posture, the traveling body 1 is substantially kept in the state in which the cut land side traveling body 7 is stuck in the crawler mark. Since it is maintained in a horizontal position, it is possible to carry out mowing work in a stable working position.

As described above, according to the present invention, when the already-cut land-side traveling body 7 is inclined due to being caught in the crawler mark in the previous work stroke or tilted. By adjusting the displacement of the ground-side traveling body 8 up and down, it is possible to maintain the traveling machine body 1 in a stable horizontal traveling state while keeping the cut-ground-side traveling body 7 in the crawler mark. Therefore, there is no need to operate the traveling machine body 1 with the steering lever so that the traveling machine body 1 is always directed to the uncut area, and the machine body center of gravity is not biased to an unstable traveling state as in the conventional case. The cutting height of the pre-processing unit 2 also does not fluctuate before and after adjustment by accurately controlling the moving body 7 on the already-cut land on the fluctuation factor side. Of course, the present invention is not limited to the above-described embodiment, and the point is that the traveling body on the side of the cut land can be moved downward relative to the traveling body on the side of the uncut land. The vertical movement of the traveling body on the side of the cut land is not manually operated by the operation lever, but is automatically detected by the horizontal detection by the attitude detection sensor provided on the machine body. The vertical control of the traveling body may be performed.

[0011]

[Effect of the device]

 In summary, since the present invention is configured as described above, the moving body on the cut land side may get stuck in a low place such as a crawler mark in the previous work process, or the storage amount in the grain storage part may increase. When the traveling body leans toward the cut-off land side, only the moving body on the cut-off land side can be adjusted downward independently to maintain the posture of the aircraft substantially horizontal, and If the machine leans toward the uncut area on the contrary, or if the machine is tilted to the uncut side, the displacement adjustment is performed only for the running body on the cut-side. Since the aircraft can be returned to the original horizontal state, the driver does not need to frequently operate the traveling aircraft so that the traveling aircraft faces the uncut area, and the cutting operation can always be performed in a stable posture. .. Further, the present invention is a machine in which the traveling device on the side of the cut land is fitted in a low place such as a crawler mark in the previous work stroke, or the position of the center of gravity of the body changes to the side of the cut land due to an increase in harvested grains. Since most of the left and right tilt factors of the left and right sides of the crawler-type running body are adopted, only the running body on the side of the cut land, which is the cause of that, can be positionally adjusted on the machine body side. Since it is not necessary to install a lifting device for the moving body on the left and right, as it is possible to adjust the position of each, the cost can be reduced significantly. In addition, the running body on the uncut land side is fixed in position on the machine body side, and the fluctuation of cutting height on the uncut land side of the pretreatment unit is suppressed to a minimum, and the running body on the cut land side is adjusted according to the inclination of the machine body. Since only the moving body is moved up and down to return the pretreatment unit to the horizontal state, there is little variation in the cutting height between the left and right before and after adjustment, and therefore there is no need to bother adjusting the cutting height again. Also, it is possible to efficiently perform the work of harvesting the fall culm.

[Brief description of drawings]

FIG. 1 is a perspective view of a combine.

FIG. 2 is a schematic cross-sectional view of a power transmission mechanism.

FIG. 3 is a plan view of a main part of a crawler type traveling body.

FIG. 4 is a side view of the crawler type traveling body in a normal state.

FIG. 5 is a side view of the crawler type traveling body in a lowered state.

FIG. 6 is a plan view of the left and right crawler type traveling bodies in a normal state. B is a side view layout of the same as above. C It is a front view of the same as above.

FIG. 7 is a plan layout view of the left and right crawler type traveling bodies in an A descending state. B is a side view layout of the same as above. C It is a front view of the same as above.

FIG. 8 is a hydraulic system diagram.

FIG. 9 is a side view of an operation lever.

FIG. 10 is an operation explanatory view.

FIG. 11 is a diagram for explaining the operation of the conventional example.

[Explanation of symbols]

 1 Traveling Aircraft 1a Airframe Frame 2 Pretreatment Section 3 Threshing Section 4 Grain Storage Section 6 Driver's Seat 7 Mowland Side Running Body 8 Uncut Landside Running Body 20 Link Arm (Front) 21 Link Arm (Rear) 25 Travel Frame 26 Working cylinder

Claims (1)

[Scope of utility model registration request] 1. A pretreatment unit is provided in front of a traveling machine body in which crawler type traveling bodies are arranged on both left and right sides, a threshing unit is provided on the uncut side, and a driver's seat and grain are provided on the already cut side. In a combine having an accommodating portion, only the traveling body on the cut-off land side of the left and right traveling bodies is linked with the front and rear link mechanisms extending between the traveling frame and the body frame forming the traveling body, and the body frame. It is provided on the body side of the machine body by a single operating cylinder connected between the link mechanism and the link mechanism so that it can be independently displaced downward with respect to the traveling body on the uncut land side. Crawler type traveling device for combine harvester.