JPS6119610Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides a cutting height control sensor that can move up and down relative to the reaping processing device and is biased downward, and maintains the vertical position of the sensor relative to the reaping processing device within a set range. The reaping harvester is equipped with a control mechanism that automatically raises and lowers the reaping processing device relative to the vehicle body based on information from the sensor, and the purpose thereof is to adjust the reaping height appropriately and accurately. The point is to make it easy to do.

More specifically, the above-mentioned reaping and harvesting machine maintains the height of the automatic reaping processing device within a set range regardless of pitching of the vehicle body or fluctuations in the amount of sinking into the mud. Therefore, the mowing height is made constant. In order to configure the control mechanism, an operating tool for changing and setting the appropriate vertical position of the sensor with respect to the reaping processing mechanism is provided, so that the cutting height can be changed and set. operating tools,
Since the setting change amount according to the movement unit amount is the same in the entire change setting range, for example, if the setting change amount according to the movement unit amount is set to a sufficiently small value, fine adjustment can be made. Although it becomes easier to perform the operation, the total operation stroke of the operating tool becomes considerably large and becomes difficult to handle.On the contrary, if the amount by which the setting is changed by the moving unit amount is set to a sufficiently large value, the operating tool becomes easier to operate. Although the total operating stroke becomes smaller and easier to handle, there is a problem in that it becomes difficult to make fine adjustments.The present invention aims to solve this problem and improve the operability for changing cutting height settings. be.

The reaping and harvesting machine according to the present invention has the above-mentioned structure, and the control mechanism includes an operating tool for changing and setting the appropriate vertical position of the sensor with respect to the reaping processing mechanism, according to a unit movement amount thereof. It is characterized in that the amount by which the settings are changed is set in such a way that the drop in the changeable setting range is very small.

In other words, when changing and setting the cutting height, in the descending range, for example, when reaping a fallen stem culm in a field with many large irregularities, the reaping processing device may contact the ground due to the response delay of the control mechanism. Although fine adjustment is particularly necessary for reasons such as the need to set the setting as low as possible so that the lodging stem culm can be harvested as desired while avoiding damage,
Focusing on the fact that there is no particular need for fine adjustment in the rising edge range as in the lower edge range, we developed an operating tool that changes the vertical position of the sensor relative to the cutting processing device in order to change the cutting height. , the setting is changed in such a way that the amount by which the setting can be changed by the unit of movement is such that the downward movement of the changeable setting range is very small. Fine adjustments can be made within this range.

As a result, we have achieved a reaping and harvesting machine that allows the cutting height to be changed accurately and easily, and which is even more convenient to use.

Embodiments of the present invention will be described in detail below based on the drawings.

As shown in FIG. 1, the front part of the vehicle body is equipped with a crawler traveling device 1, a threshing device 2, a driving section 3, etc., and is equipped with a divider 35 for separating the planted stem culm, a device 4 for pulling up the stem culm, and a pulling device 4 for separating the planted stem culms. A clipper-type cutting blade 5 that cuts the base of the stalk culm, auxiliary carrying devices 6a and 6b that transport the cut stalk culms to the rear and merge them, and a rear section that transports the merged stalk culms toward the threshing device 2. A reaping section consisting of a conveyance device 7 is provided, and is configured to automatically and continuously perform the operations of reaping the stem culms planted in the culm as the machine advances, and then threshing them. Note that this combine harvester is normally set to perform circular mowing work with the already cut area located on the right side of the machine body.

The support frame 8 of the reaping processing section is pivotally supported to the vehicle body by a hydraulic cylinder 9 so as to be swingable around the horizontal axis X, and as shown in FIGS.
As shown in the figure, with respect to a horizontal shaft 10 provided on the right side of the cutting blade 5 and supported by the support frame 8, a horizontal shaft 10 is attached to a horizontal axis 10 that is larger than the plant diameter of the target stem culm and larger than the planting interval. Cutting height control sensors 1 arranged side by side with small horizontal intervals
Spring 12a, 12b pivots the front end portions of the pair of grounding rods 11a, 11b as 1 so as to be vertically swingable around the axis Y, and biases both the rods 11a, 11b downward, respectively. It is provided.
Furthermore, a release wire 15 extending from a release wire 14 extending from a swing operation arm 14 of a control valve 13 that switches the operating state of the hydraulic cylinder 9,
A tongue piece 1 attached to each of the rod-shaped bodies 11a and 11b.
A long hole 17 along the vertical direction with respect to 6a and 16b
a, 17b are connected using a pin 18 with flexibility for relative movement in the vertical direction, and the swing operation arm 14 is connected to the spring 1.
At step 9, the hydraulic cylinder 9 is extended and biased toward a lifting operation to raise the reaping processing section. And both the rod-shaped bodies 11a,
When the vertical position of the cutting blade 11b is within the set range, or when one of the vertical positions is within the set range and the other is rising above the set range, the control valve 13 is activated to stop the operation of the hydraulic cylinder 9. When the upper and lower positions of the rod-shaped bodies 11a and 11b with respect to the cutting blade both rise out of the set range in a neutral state, the control valve 13 is actuated to extend the hydraulic cylinder 9 to raise the reaping processing section. condition, and when the vertical position of at least one of the rod-like bodies 11a, 11b relative to the mower blade falls too far out of the set range, the control valve 13 is actuated to shorten the hydraulic cylinder 9, and the reaping operation is stopped. It is configured to change the state in which the processing section is lowered, and is configured to automatically maintain the height of the cutting blade 5 relative to the ground at a set height, thereby making the cutting height constant. .

In short, the height of the cutting blade 5 above the ground is detected by the two rod-like bodies 11a and 11b, and the cutting section is automatically raised and lowered to maintain a constant cutting height regardless of pitching of the vehicle body. In addition, even if one of the pair of rod-shaped bodies 11a, 11b rides on foreign objects such as straw waste, uncut stem culms, stumps, etc., and goes out of the setting range, the reaping processing section is not raised. In this way, malfunctions due to foreign objects are suppressed.

In addition, the swinging operation arm 14, which is attached to the lowering operation by the sensors 11a and 11b,
A valve operating lever 21 is provided which is locked and moved to the side of the upward operation with a locking pin 20, and this lever bar 21
, up position U, up/down stop position N, down position D
By switching the lever bar 21 to the automatic position A, the pin 20 is moved to a position where it does not come into contact with the arm 14, so that the reaping processing section can be moved up and down as desired. Based on the information of 11a and 11b, a state is created in which the reaping processing section is automatically raised. Also, move the lever 21 to the lifting/lowering stop position N.
Springs 22, 22 are provided to bias and hold the bar 21, and a guide frame 23 is also provided to lock and hold the bar 21 at the automatic position A.

As shown in FIGS. 2 to 4, a body 24 that supports the outer wire end 15a of the release wire 16 on the arm 14 is attached to an operating tool 25 that can swing in the direction of distance from and near the arm 4. The outer wire end portion 15a is rotatably pivoted to the attached tongue piece 25a so that the virtual extension line 8 of the outer wire end portion 15a remains directed toward the wire connection point on the arm 14. The pivotally supported rod-shaped body 26 is controlled with respect to the frame body 24 so that its posture with respect to the tongue piece 5a is such that the virtual extension line S of the outer wire end portion 15a faces the wire connection point. In order to fix the operating tool 25 at a desired swinging position, a friction body 34 that contacts the guide member 28 of the pin 27 fixed to the operating tool 25 is inserted into the guide member so that the operating tool 25 can be fixed at a desired swing position. 28 is provided with elastic bias, and when the operating tool 25 swings, the swing arm 14 and both rod-shaped bodies 11a, 11b are
The arrangement is such that the appropriate vertical positions of the rod-shaped bodies 11a and 11b relative to the cutting blade 5 can be changed and set in order to change the cutting height.

In addition, when the operating tool 25 is provided, its swinging range is adjusted between the guide member 28 and the pin so that the amount of setting change depending on the swinging unit amount is very small. regulated by 27,
In addition, it is configured to facilitate fine adjustment in the descending range while suppressing the total operating stroke from increasing.

As shown in FIGS. 2 and 5, both tongue pieces 1
Elongated holes 29a, 2 in the vertical direction relative to 6a, 16b
A pin 30 flexibly connected by 9b,
The fulcrum frame 31 of the reaping support frame 8 is interlocked with the fulcrum frame 31 via a wire 32 and a swinging link 33 for interlocking flexibility, and as the reaping processing section is raised by more than a set value, both rod-like bodies 11a, 11b
A forced lift operation mechanism is configured to swing the machine upward.

In short, when the reaping processing section is raised while driving on the road, etc., both the rod-shaped bodies 11a, 11b
It is designed so that it can be automatically retracted upward to avoid damage from contact with other objects.

In the embodiment, a pair of grounding rods 11a and 11b were used as an example of the cutting height control sensor, but 1
It may also be implemented by providing two grounding bodies or stump contacting bodies.

Further, in the embodiment, in order to raise and lower the cutting blade 5 as a reaping processing device based on the information of the sensor 11,
Although the reaping processing unit is moved up and down, it is sufficient to at least move only the reaping processing device 5 up and down.

Further, in the embodiment, the wire 15 is used to connect the sensor 11 and the control valve 13 of the lifting hydraulic cylinder 9 to configure a control mechanism that automatically lifts and lowers the reaping processing device 5 based on information from the sensor 11. Although a mechanical linkage mechanism is shown as an example, for example, the vertical position of the sensor 11 relative to the reaping device is detected by an electric switch, and the control valve 1 is activated based on this detection signal.
It may be implemented with other configurations, such as a configuration in which 3 is operated.

Furthermore, there are various possible means for changing and setting the cutting height using the operating tool 25, and any means may be used to change the cutting height.

Further, the present invention can be applied to reaping and harvesting machines such as binders as well as combiners.

[Brief explanation of the drawing]

The drawings show an embodiment of the reaping/harvesting machine according to the present invention, in which Fig. 1 is a side view of the front part of the combine, Fig. 2 is a diagram of the relationship between both rod-shaped bodies and the control valve, and Fig. 3 is a diagram of the operating tool mounting part. A perspective view, FIG. 4 is a side view of the same part, and FIG. 5 is a side view of the forcibly lifting operation mechanism for both rod-like bodies. 5... Reaping processing mechanism, 11... Sensor, 25
...Manipulation tool.

Claims (1)

[Scope of utility model registration request] The cutting height control sensor 11 is connected to the cutting processing device 5.
The reaping processing device 5 is automatically attached to the vehicle body based on the information of the sensor 11 so that the vertical position of the reaping processing device of the sensor 11 is maintained within a set range. The reaping/harvesting machine is provided with a control mechanism for raising and lowering the sensor, and the control mechanism includes the sensor 1.
The operation tool 25 for changing and setting the appropriate vertical position for the reaping processing device 5 in No. 1 is provided in such a manner that the amount by which the setting is changed is so small that the lowering of the range in which the change can be set is made smaller according to the movement unit amount of the operating tool 25. A reaping harvester characterized by: