JPH078080A - Combine - Google Patents

Abstract

(57) [Abstract] [Purpose] Regardless of the skill of the operator, when the cutting operation is started after traveling on the headland, the peripheral speed of the take-up reel with respect to the ground is maintained within an appropriate range as much as possible. [Structure] A take-up reel 9 for scraping the tip end side of the grain to be mowed to the rear side of the vehicle by rotating around an axis along the lateral direction of the vehicle body, and a mowing state detection for detecting whether or not the mowing operation is being performed Means S5 and vehicle speed detection means S4 for detecting vehicle speed
Is provided, and the control means 100 that controls the rotation speed of the take-up reel to be larger as the vehicle speed increases stores the vehicle speed at the time of changing from the non-mowing state to the mowing state. The number of rotations of the take-in reel 9 is controlled with the number of rotations of the reel corresponding to the above-described vehicle speed information stored in the target rotation number.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a take-up reel for scraping the tip end side of a grain stem to be mowed rearward of a car body by rotating around an axis along the lateral direction of the car body, and the number of rotations of the take-in reel. And a control means for controlling the vehicle to increase as the vehicle speed increases.

[0002]

2. Description of the Related Art In order to properly scrape a grain culm to be mowed by a scraping reel, it is desirable to maintain the peripheral speed of the scraping reel with respect to the ground in an appropriate range regardless of changes in traveling speed. Therefore, the present applicant has proposed to provide a control means for adjusting the rotation speed of the take-in reel to be larger as the vehicle speed becomes higher (see Japanese Utility Model Laid-Open No. 1-155333).
Conventionally, the control means has always adjusted the rotation speed of the take-up reel as the vehicle speed increases, not only during the mowing operation but also during traveling on the headland.

[0003]

By the way, in a combine harvester, when traveling on a headland, the vehicle speed is made higher than the vehicle speed during normal reaping work (hereinafter referred to as the normal reaping vehicle speed), while the vehicle is traveling on the headland. When the mowing work is restarted at the next mowing work position, the vehicle speed is adjusted to be lower than the normal mowing vehicle speed in advance in order to adjust the grain for the mowing target culm. Therefore, according to the above-mentioned conventional technique, in headland traveling, the rotation speed of the take-up reel is unnecessarily increased in accordance with a high vehicle speed, which not only wastes energy, but also the take-up reel and its drive device. There was a risk that the etc. would be damaged early. On the other hand, if the vehicle speed is suddenly reduced immediately before restarting the mowing operation after traveling on the headland, the vehicle speed may decrease due to a delay in the control response of the take-up reel transmission (for example, a belt-type transmission). However, the peripheral speed of the take-in reel with respect to the ground becomes too fast, which may cause problems such as shedding. Therefore, in order to improve both the above defects, for example, a value obtained by reducing a predetermined amount or a predetermined ratio from the rotation speed of the take-up reel at the time of ending the mowing operation and shifting to headland traveling,
A technique for controlling the target rotation speed while traveling on a headland has been proposed (see Japanese Patent Application No. 4-175174).

However, the degree to which the vehicle speed is adjusted to a small value at the next mowing work position after traveling on the headland varies depending on, for example, the skill of the worker, that is, the skill of the mowing work.
Workers who are unskilled in work tend to adjust the speed to be slower than those who are skilled in work in order to perform the alignment carefully. Therefore, for example, when an unskilled worker or the like makes the vehicle speed extremely low before finishing traveling on the headland, in the above-described improved technique, the peripheral speed of the take-up reel with respect to the ground becomes too fast and shattering or the like occurs. There was a risk of

The present invention has been made in view of the above circumstances, and an object thereof is to solve the above-mentioned drawbacks of the related art and to start reaping work after traveling on a headland regardless of the skill of an operator. In doing so, the peripheral speed of the take-in reel with respect to the ground can be maintained within an appropriate range as much as possible.

[0006]

The combine configuration according to the present invention is provided with a mowing state detecting means for detecting whether or not a mowing operation is being performed, and a vehicle speed detecting means for detecting a vehicle speed. Stores the vehicle speed at the time of changing from the non-mowing state to the mowing state based on the information of the mowing state detecting means and the vehicle speed detecting means, and, in the non-mowing state, stores the previously stored vehicle speed information. The number of rotations of the take-in reel is controlled with the corresponding number of rotations of the reel as the target number of rotations.

[0007]

According to the characterizing feature of the present invention, first, the vehicle speed at the time when the non-cutting state is changed to the cutting state is stored. Here, the vehicle speed at the time of changing from the non-cutting state to the cutting state is
For example, the unskilled worker is slower than the skilled worker, depending on the skill level of the worker for the mowing work. Therefore, the slow value is the unskilled worker and the fast value is the skilled worker. Are memorized respectively.

Next, when the non-reaping state is restored again,
Before that, the reel rotation speed corresponding to the vehicle speed information stored at the time of the change from the non-cutting state to the cutting state is set as the target rotation speed. That is, since the stored vehicle speed is low in the case of an unskilled worker, a small reel rotation speed is set as the target rotation speed, and in the case of a skilled worker, the stored vehicle speed is high and thus is large. Is set as the target rotation speed, and in the non-mowing state, the rotation speed of the take-up reel is maintained at those target rotation speeds.

[0009]

Therefore, according to the characteristic configuration of the present invention, for example, when the skill of the worker is different,
When an unskilled worker or the like makes the vehicle speed extremely low before starting the mowing work in order to carefully adjust the line, the rotation speed of the take-up reel is adjusted to a small value in response to the low vehicle speed. When the peripheral speed of the take-up reel with respect to the ground is maintained in an appropriate range, and when a skilled worker or the like starts the reaping work at a relatively high speed, the rotation speed of the take-up reel is also corresponding to the high vehicle speed. The combiner can be adjusted to a large extent to maintain the peripheral speed of the take-up reel with respect to the ground in an appropriate range, and thus a combine can be obtained in which the peripheral speed of the take-up reel with respect to the ground can be maintained within an appropriate range.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 6, a threshing device 3 is mounted on a traveling machine body 2 provided with a pair of left and right crawler traveling machines 1, and a mowing pretreatment device 4 is vertically movably connected to a front portion of the traveling machine body 2. All culm throw type combine is constructed.

The cutting pretreatment device 4 has a take-up reel 9 for turning the tip side of the grain stalks to be cut to the rear side of the vehicle by rotating around an axis along the lateral direction of the vehicle, and a scraped plant. A cutting blade 5 that cuts the root of the standing grain culm, a conveyor 6 that conveys the cut grain culm backward in a tilted posture with the tip of the tip, and a grain culm conveyed by the conveyor 6 to the center side in the lateral direction of the vehicle body. An auger 12 for collecting and collecting, and a conveyer 13 for lifting and conveying which collects and collects the collected grain culms toward the threshing device 3 are conveyed.

The threshing device 3 is provided with a handling chamber 31 for accommodating a handling barrel 30 which rotates around an axis extending in the longitudinal direction of the vehicle body. As shown in FIG. 5, a grain culm detection switch S5 for detecting whether or not grain culm is supplied to the handling room 31 is attached to the front part of the handling room 31, and the grain culm detection switch S5 is attached.
Is provided with a contact piece 32 that is swingable in the rotation direction of the handling cylinder 30 and is biased to return to a posture in which it projects toward the handling cylinder 30. Then, as will be described later, a state in which the grain culm is not in contact with the contact piece 32, that is, the grain culm detection switch S5.
Is determined to be a non-mowing work state when the state in which no grain culm is detected continues for 2 seconds or more, and is determined to be a mowing work state otherwise. Therefore, it corresponds to a cutting state detecting means for detecting whether or not the grain culm detection switch S5 is in the cutting work state.

Next, the structure for rotationally driving the take-in reel 9 will be described. As shown in FIG. 1, a hydraulic motor 14 driven by pressure oil from a hydraulic pump (not shown) is provided, and the output of the hydraulic motor 14 is transmitted to a take-up reel 9 via a belt type transmission device 15. To be done. The transmission 15 is configured by splitting the input pulley 15a and the output pulley 15b into a split pulley type.
The rotational speed of the take-up reel 9 can be changed and driven by changing and adjusting the gap between the pair of pulley members a and 15b, respectively. And both pulleys 15
A pair of gap adjusting arms 16 for a and 15b respectively
a and 16b and a speed change motor 17 for swinging the arms 16a and 16b are provided, and the rotation speed of the take-in reel 9 can be changed by the operation of the speed change motor 17.

A structure for controlling the operation of the shifting motor 17 will be described. As shown in FIG. 1, a control device H using a microcomputer is provided.
The threshing switch S1 for detecting the on / off of the threshing clutch, the mowing switch S2 for detecting the on / off of the reaping clutch, the engine speed sensor S3 for detecting the engine speed, and the vehicle speed v.
The vehicle speed sensor S4 as a vehicle speed detecting means for detecting the above, the grain culm detection switch S5, the automatic mode switch S6 for selecting the automatic mode, and the peripheral speed R of the take-in reel 9 from the swing position of the arms 16a and 16b. Speed detecting potentiometer S7, take-up reel 9 in automatic mode
Setting potentiometer S for changing and setting the lower limit of rotation speed
8, limit switches S9, S10 for detecting the upper limit or the lower limit of the swing positions of the arms 16a, 16b, and the take-up reel 9
Each of the manual switches S11 for manually adjusting the number of rotations is connected. The vehicle speed sensor S4 is composed of a rotation speed sensor that detects an input rotation speed to the transmission case that transmits the engine output to the crawler traveling device 1. Further, the speed detecting potentiometer S
The detection voltage Vx of 7 and the detection voltage Vt of the setting potentiometer S8 are both set in the range of 0 to 5 (V).

The control device H is configured to control the operation of the speed-changing motor 17 on the basis of information preset and stored and various input information. That is, using the control device H, the control means 100 is configured to control the rotation speed K of the take-in reel 9 so as to increase as the vehicle speed increases. Further, the control means 100 stores the vehicle speed at the time of changing from the non-mowing state to the mowing state based on the information of the grain culm detection switch S5 and the vehicle speed sensor S4, and when in the non-mowing state, The reel rotation speed corresponding to the vehicle speed information stored in is set as a target rotation speed, and the rotation speed of the take-in reel 9 is controlled. The rotation speed K (/ s) of the take-in reel 9 is calculated by using the peripheral speed R (m / s) of the take-up reel 9 and the formula K = R / (2 × π ×
Since there is a relationship of r) (r (m) is the turning radius of the take-in reel 9), the peripheral speed R will be described below instead of the rotation speed K. The control of the peripheral speed R of the take-in reel 9 by the control device H is executed in the automatic mode in which the automatic switch S6 is ON.

First, the control in the mowing operation state (that is, when the grain culm detection switch S5 detects grain culm) will be described. The peripheral speed R (more accurately, the target peripheral speed) is the peripheral speed R. It is calculated from the calculated value B for obtaining by the following equation (1). R = −0.87 × B / 20 + 3.915 (m / s) ... (1)

Here, the calculated value B is the following equation (2) and FIG.
As shown in, the vehicle speed v and the set voltage Vt of the set potentiometer S8 are given as variables. Incidentally, the vertical axis of FIG. 4, that is, the calculated value B is a numerical value that becomes smaller as it goes up.
When the set voltage Vt is 0 (V) and when the set voltage Vt is 5
The case of (V) is illustrated. B = 75-16 × v × (0.3 × Vt + 1) ... (2)

Since B / 20 included in the equation (1) corresponds to the detection voltage Vx of the potentiometer for speed detection S7, the detection voltage Vx is B / 20 in the above equation (1).
By operating the shifting motor 17 so as to match the value (1) (which becomes the target voltage Vs), the actual peripheral speed R can be controlled to the target peripheral speed defined by the equation (1).

The calculated value B has an upper limit value H and a lower limit value L. That is, when the calculated value B obtained by the equation (2) exceeds the upper limit value H, the upper limit value H is used, and when the calculated value B is below the lower limit value L, the lower limit value L is used as the calculated value B in the equation (1). Here, the upper limit value H is calculated by the following equation (3), and the lower limit value L is fixed at 43 (see FIG. 4). H = 70-14 / 5 × Vt ... (3)

Next, the control content in the non-pruning work state (that is, when the grain culm detection switch S5 does not detect the grain culm for 2 seconds or more) will be described. Assuming that the vehicle speed stored at the time point is v0, the calculated value B0 corresponding to this vehicle speed v0 is obtained from the equation (2) (for example, when Vt = 0, refer to FIG. 4), and the calculated value B0 is obtained from the equation (1). ), The target peripheral speed R0 is obtained, and the peripheral speed R of the take-in reel 9 is maintained at this target peripheral speed R0.

Next, the reel rotation control of the control device H will be described with reference to the flow charts shown in FIGS. First, it is checked whether or not the starting condition is satisfied. Here, the start condition is i. The threshing switch S1 is ON, that is, the threshing clutch is on. ii. The reaping switch S2 is ON, that is, the reaping clutch is ON. iii. The engine speed is 2000 (rpm) or higher. iv. The vehicle speed v is 0.2 (m / s) or more. There are four conditions.

When the starting condition is not satisfied, the first flag F1 and the second flag F2 are reset, and the shift motor 17 is not controlled at this time. The first flag F1 is set when the grain culm detection switch S5 is turned on after the start condition is satisfied. The second flag F2 is set in the non-mowing work state and reset in the mowing work state.

When the starting condition is satisfied, based on the information of both flags F1 and F2 and the grain culm detection switch S5,
It is determined whether it is in the mowing work state or in the non-mowing work state. That is, when the first flag F1 is in the reset state and the grain stalk detection switch S5 is turned on, it is determined that the non-mowing work state is changed to the mowing work state, the vehicle speed v0 at that time is stored, and the first flag F1 is set. . When the first flag F1 is reset and the grain culm detection switch S5 is OFF, the control of the shifting motor 17 is stopped.

When the first flag F1 is in the set state and the second flag F2 is in the reset state, when the grain culm detection switch S5 is ON, or when the OFF state does not continue for 2 seconds or more, mowing work is performed. It is judged as a state. On the other hand, when the state that the grain culm detection switch S5 is OFF continues for 2 seconds or more, it is determined that the reaping work state has changed to the non-rearing work state, and the speed detection potentiometer S7 corresponding to the stored vehicle speed v0. The target voltage Vs (= B0 / 20) for the non-pruning work state is set, and the second flag F is set.
Set 2.

When both of the first flag F1 and the second flag F2 are set, if the grain culm detection switch S5 is OFF, it is determined that the cutting operation is not performed, while if the grain culm detection switch S5 is ON, the It is determined that the mowing work state is changed to the mowing work state, the vehicle speed v0 at that time is stored, and the second flag F2 is reset.

In the cutting operation, the lower limit value L is set to 43.
And the upper limit value H is set based on the equation (3). Further, the calculated value B is calculated based on the equation (2), and the size of the calculated upper limit value H and the lower limit value L is compared to determine the finally calculated calculated value B from the value of the calculated value B of the speed detecting potentiometer S7. A target voltage Vs for the cutting operation state is obtained.

Then, the potentiometer for speed detection S7
The speed-changing motor 17 is operated so that the deviation between the detected voltage Vx and the set target voltage Vs for the mowing work state and the non-mowing work state set below becomes a predetermined value (here 0.04 V) or less. Thus, the peripheral speed R of the take-in reel 9 is controlled to be decelerated or accelerated.

[Other Embodiment] In the above embodiment, in the non-cutting state, the reel rotation speed (actually, the reel peripheral speed R) corresponding to the information of the vehicle speed v0 at the time when the immediately preceding non-cutting state is changed to the cutting state is set. Although the target rotation speed is shown as an example, not the vehicle speed information of the immediately preceding one but, for example, the vehicle speed information of a plurality of past times including the immediately preceding one is stored, and the reel rotation corresponding to the average vehicle speed obtained by averaging the plurality of vehicle speeds is stored. The number may be the target rotation number.

In the above embodiment, the cutting state detecting means S
5 is configured by the grain culm detection switch S5 provided in the handling room, but other than this, for example, a grounding type cutting height sensor provided in the cutting pretreatment device 4 may be used.

In the above embodiment, the vehicle speed detecting means S4
Is constituted by a vehicle speed sensor S4 for detecting an input rotation speed to a transmission case for transmitting an engine output to the crawler traveling device 1, but other than this, for example, a drive shaft of the crawler traveling device 1 is shown. It may be a sensor that detects the number of rotations.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a block diagram of a control configuration.

FIG. 2 is a flowchart of control operation.

FIG. 3 is a flowchart of control operation.

FIG. 4 is an explanatory diagram showing a relationship between a vehicle speed v and a calculated value B for calculating a reel peripheral speed R.

FIG. 5 is a front view of the main part of the handling room.

FIG. 6 is a schematic side view of the combine.

[Explanation of symbols]

 9 scraping reel 100 control means S5 mowing state detection means S4 vehicle speed detection means

Claims (1)

[Claims] 1. A take-up reel (9) for scraping the tip end side of the grain to be mowed rearward of the car body by rotating around an axis along the lateral direction of the car body, and the number of rotations of the scraping reel (9). A combiner provided with a control means (100) for controlling the vehicle speed as the vehicle speed increases, the harvesting state detecting means (S5) for detecting whether or not the vehicle is in a cutting operation state, and the vehicle speed for detecting the vehicle speed. A detection means (S4) is provided, and the control means (100) is provided with the cutting state detection means (S).
5) and the information of the vehicle speed detection means (S4),
The vehicle speed at the time of changing from the non-cutting state to the cutting state is stored, and in the non-cutting state, the reel rotation speed corresponding to the previously stored vehicle speed information is set as the target rotation speed of the take-up reel (9). A combine configured to control the number of revolutions.