JPH078079A - Combine - Google Patents

Abstract

(57) [Abstract] [Purpose] In both the mowing and non-mowing states, the peripheral speed of the take-up reel with respect to the ground is maintained within an appropriate range according to the selected crop condition. [Structure] A take-up reel 9 for scraping the tip end side of a grain stalk to be cut toward the rear side of a vehicle by rotating around an axis along the lateral direction of the vehicle body, and a crop condition selection for selectively selecting a plurality of crop conditions The control means 100 is provided with a means SW and a mowing state detecting means S5 for detecting whether or not it is in a mowing operation state, and controls the rotation speed of the take-in reel to be greater as the vehicle speed increases.
However, in the mowing state, the control content corresponding to the selected crop condition is selected from the preset control contents corresponding to each of the plurality of crop conditions, and the rotation speed control of the take-in reel 9 is executed. In the non-pruning state, the control content for the non-pruning state corresponding to the crop condition selected from the preset control content for the non-pruning state corresponding to each of the plurality of crop conditions is selected, Executes rotation speed control.

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, conventionally, in the mowing work state,
The rotation speed of the take-in reel was controlled so as to be adjusted to a larger value as the vehicle speed increased (actually proposed by the applicant of the present application 1-
155333).

[0003]

By the way, in the combine harvester, when the mowing work is restarted at the next mowing work position after traveling on the headland, the vehicle speed is set to a small speed in advance in order to align the grain culms to be mowed. However, when the vehicle speed is suddenly adjusted to a small value, for example, the peripheral speed of the take-up reel with respect to the ground (that is, the reel rotation speed) due to the delay in the control response of the belt-type transmission of the take-up reel, for example. In order to improve the fact that the cutting speed becomes too fast, for example, a value that is reduced by 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 moving to headland traveling is used during headland traveling, that is, non-crop. A technique for controlling the target rotation speed in the state has been proposed (see Japanese Patent Application No. 4-175174). However, the vehicle speed condition at the next mowing operation start position varies depending on the crop condition. For example, soybean has a ridge, so that it is operated at a lower speed than rice or wheat. Therefore, in the above technique, when the target rotation speed is set to be appropriate for the vehicle speed of soybean, there is a possibility that the rotation speed of the reel becomes too small for rice, wheat, etc., and the scraping cannot be performed properly. On the other hand, if the target rotation speed is set to be appropriate for the vehicle speed of rice, wheat, etc., the reel rotation speed may become too large for soybeans and shedding or the like may occur.

Further, even in a normal cutting operation, the value of the proper reel rotation speed for the same vehicle speed varies depending on the crop condition, and, for example, soybeans are likely to be shed. It is necessary to set a lower rotation speed than wheat. The above-mentioned conventional technology (actual Kaihei 1-15
No. 5333) is provided with means for changing and setting the tuning rate (rate of change) of the reel rotation speed with respect to the vehicle speed.
For the setting, an operator or the like judges the conditions such as the grain culm in the field, and based on the judgment, the tuning rate (change rate) of the reel rotation speed with respect to the vehicle speed is selected and set from, for example, three levels of standard, high and low. It is nothing more than a thing.

The present invention has been made in view of the above circumstances, and an object of the present invention is to solve the drawbacks of the above-mentioned technique and to meet the selected crop condition in both the mowing state and the non-mowing state. That is, the peripheral speed of the take-in reel with respect to the ground is maintained within an appropriate range as much as possible.

[0006]

A first characteristic configuration of a combine according to the present invention is provided with crop condition selecting means for selectively selecting a plurality of crop conditions, and the control means is provided with the plurality of crop conditions. The control content corresponding to each of them is preset, and based on the information of the crop condition selecting means, the control content corresponding to the crop condition selected by the crop condition selecting means is selected to select the take-up reel. It is configured to execute the rotation speed control.

The second characteristic structure is provided with a mowing state detecting means for detecting whether or not it is in a mowing operation state, and the control means is for a non-mowing state corresponding to each of the plurality of crop conditions. The content of control is preset, and based on the information of the mowing state detecting means and the crop condition selecting means,
In the non-mowing state, the control content for the non-mowing state corresponding to the crop condition selected by the crop condition selecting means is selected and the rotation speed control of the take-up reel is executed. is there.

[0008]

According to the first characteristic configuration of the present invention, a crop condition is alternatively selected from a plurality of crop conditions, and the control content of the rotation speed control of the take-in reel corresponding to the crop condition is changed to a plurality of contents. It is selected from the preset control contents corresponding to each crop condition. Then, the rotation speed control of the take-in reel is executed according to the selected control content.

According to the second characteristic configuration, when the non-mowing state is set, the rotation speed control of the take-up reel for the non-mowing state corresponding to the crop condition selected alternatively from a plurality of crop conditions is performed. The control content is selected from among the preset control content for the non-mowing state corresponding to each of the plurality of crop conditions. Then, the rotation speed control of the take-in reel is executed in accordance with the selected control content for the non-reaping state.

[0010]

As described above, according to the first feature of the present invention, when the value of the reel speed appropriate for the same vehicle speed is different depending on the crop condition in the mowing operation state, for example, soybean is not shredded. Since it is easy to occur, it is possible to control the reel rotation speed to an appropriate value in order to prevent it, and it is necessary to set a lower rotation speed than rice or wheat etc. It is possible to obtain a combine that can realize good cutting performance by appropriately responding to each condition.

According to the second characteristic configuration, for example, when the vehicle speed at the beginning of mowing after traveling on the headland varies greatly depending on the crop conditions, for example, soybeans have ridges, so that rice or wheat, etc. may have ridges. When it is necessary to make the speed lower than that of the soybean, the reel speed is controlled to be low for soybeans and higher for rice and wheat. Therefore, the reel rotation speed control in the non-shearing work state can be appropriately performed corresponding to each crop condition, and accordingly, the next rotation after headland traveling can be performed by appropriately responding to each crop condition. It is possible to obtain a combine that can realize good cutting performance from the starting position of the cutting work.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 7, 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 pre-mowing treatment 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 includes 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 the axis along the lateral direction of the vehicle, and the scraped planting. 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 along the longitudinal direction of the vehicle body. As shown in FIG. 6, a grain culm detection switch S5 for detecting whether or not grain culm is supplied to the handling chamber 31 is attached to the front of the handling chamber 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 shift 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.
A vehicle speed sensor S4 as a vehicle speed detecting means for detecting the speed, the grain culm detecting switch S5, an automatic mode switch S6 for selecting an automatic mode, and a rotation speed K of the take-in reel 9 from the swing position of the arms 16a and 16b. A reel rotation speed detecting potentiometer S7 and a limit switch S for detecting the upper limit or the lower limit of the swing position of the arms 16a, 16b.
9, S10, a manual switch S11 for manually adjusting the number of rotations of the take-in reel 9, and a crop as a crop condition selecting means for selectively selecting two crop conditions of rice / wheat condition and soybean condition. Each of the selection switches SW 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.

The control device H is configured to control the operation of the speed-changing motor 17 on the basis of information stored in advance and various input information. That is, using the control device H, the rotation speed K (rpm) of the take-in reel 9
The control means 100 is configured to control the vehicle speed v (m / s) so as to increase as the vehicle speed v (m / s) increases.
The control content corresponding to each of the two crop conditions of rice, wheat and soybean is preset, and the crop selection switch SW
The control contents corresponding to the crop condition selected by the crop selection switch SW are selected on the basis of the above information, and the rotation speed control of the take-in reel 9 is executed. The above control contents are specifically shown in FIG. 2, and in the mowing work state (that is, when the grain culm detection switch S5 detects grain culm), the vehicle speed v (m / s) under rice / wheat conditions is shown.
The change rate of the reel rotation speed K (rpm) with respect to the change is set to be larger than the change rate under the soybean condition.

Further, the control means 100 is preset with the control content for the non-mowing state corresponding to each of the two crop conditions of the rice / wheat and the soybean, and the grain / culm detection switch S.
5 and the information on the crop selection switch SW, the control content for the non-mowing state corresponding to the crop condition selected by the crop selection switch SW is selected, and the rotation speed control of the take-in reel 9 is executed. Is configured to. The control content for the non-crop state is specifically shown in FIG. 3, and the non-crop working state (that is, when the grain culm detection switch S5 does not continuously detect the grain culm for 2 seconds or more), that is, the headland In the rice / wheat condition, for example, the vehicle speed v (m / s) is limited to the reel rotation speed Ka at the end of mowing during traveling.
While the reel rotation speed K (rpm) is controlled to be higher as the speed increases, the vehicle speed under the soybean condition (for example, 0.5
The reel rotation speed is maintained at a low rotation speed Kb corresponding to m / s). The rotation number control 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.

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 at this time, the control of the shifting motor 17 is stopped. 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 reset and the grain culm detection switch S5 is turned on, it is determined that the non-mowing work state has changed to the mowing work state, the first flag F1 is set, and the reel rotation speed in the mowing state is set. Control (see FIG. 2) is executed. If the first flag F1 is in the reset state and the grain culm detection switch S5 is OFF, it is determined to be the non-mowing work state, and the control is stopped at this time.

When the first flag F1 is in the set state and the second flag F2 is in the reset state, it is judged that the grain cutting switch S5 is in the OFF state for 2 seconds or more, and the cutting operation is performed. If the state in which the grain culm detection switch S5 is OFF continues for 2 seconds or more while the reel rotation speed control is executed, it is determined that the cutting operation state has changed to the non-cutting operation state, and the second flag F2 is set.
When the rice / wheat condition is selected, the reel rotation speed Ka at the end of mowing is stored, and the reel rotation speed Ka is set as an upper limit rotation speed so that the reel rotation speed is proportional to the vehicle speed v. If the soybean condition is selected, control is performed to maintain the reel rotation speed at the low rotation speed Kb (see FIG. 3).

When both the first flag F1 and the second flag F2 are in the set state, it is judged as the non-mowing work state unless the grain culm detection switch S5 is turned on, and the reel rotation speed control in the non-mowing state (FIG. 3). However, when the grain culm detection switch S5 is turned on, it is determined that the non-mowing work state has changed to the mowing work state, the second flag F2 is reset, and then the reel rotation speed control in the mowing state ( (See FIG. 2).

[Other Embodiments] In the above embodiment, the cutting condition detecting means S5 is constituted by the grain culm detecting switch S5 provided in the handling room. However, other than this, for example, a grounding type provided in the cutting pretreatment device 4 is used. A cutting height sensor may be used. In this case, since the grain culm detection switch S5 is provided on the front side of the installation location, there is an advantage that the response of detection is good. While the culm detection switch S5 may not be able to reliably detect the cutting state, the grounding type cutting height sensor has an advantage that it can be reliably detected.

In the above embodiment, the crop condition selecting means S is used.
W was configured so as to select two crop conditions, a rice / wheat condition and a soybean condition.
Not only one condition but also rice and wheat may be different conditions, and three crop conditions may be selected together with soybeans. Moreover, not only the type of crop such as rice but also the lodging condition may be selected. It is also possible to configure so as to be selected as a crop condition.

Further, in the above embodiment, the control content corresponding to each of the plurality of crop conditions is set to the characteristic shown in FIG.
The present invention is not limited to this, and can be appropriately changed depending on, for example, the growing state of the crop in the field and the conditions of the cutting processing unit.

Further, in the above-mentioned embodiment, the control content for the non-mowing state corresponding to each of the plurality of crop conditions is set to the characteristic shown in FIG. 3, but the present invention is not limited to this, for example, a certain low value under soybean conditions. Instead of the control of maintaining the rotation speed Kb, the reel rotation speed can be increased at a small change rate with respect to the increase of the vehicle speed v.

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 an explanatory diagram showing a control characteristic of a reel rotation speed K with respect to a vehicle speed v in a mowing operation state.

FIG. 3 is an explanatory diagram showing a control characteristic of a reel rotation speed K with respect to a vehicle speed v in a non-mowing work state.

FIG. 4 is a flowchart of control operation.

FIG. 5 is a flowchart of control operation.

FIG. 6 is a front view of the main part of the handling room.

FIG. 7 is a schematic side view of the combine.

[Explanation of symbols]

 9 scraping reel 100 control means SW crop condition selection means S5 cutting state detection means

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yuji Tanaka 64, Ishizukita-machi, Sakai City, Osaka Prefecture Kubota Sakai Factory Co., Ltd.

Claims (2)

[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). And a control means (100) for controlling the vehicle as the vehicle speed increases, and a crop condition selecting means (SW) for selectively selecting a plurality of crop conditions is provided. In (100), the control content corresponding to each of the plurality of crop conditions is preset, and the crop selected by the crop condition selecting means (SW) based on the information of the crop condition selecting means (SW). A combine configured to select the control content corresponding to a condition and execute the rotation speed control of the take-in reel (9). 2. A mowing state detecting means (S5) for detecting whether or not a mowing operation state is provided, and the control means (100) controls the non-mowing state corresponding to each of the plurality of crop conditions. Based on the information of the cutting condition detecting means (S5) and the crop condition selecting means (SW), the contents are set in advance, and the crop condition selected by the crop condition selecting means (SW) in the non-cutting state. The combine according to claim 1, wherein the combiner is configured to select the control content for the non-crop state corresponding to, and execute the rotation speed control of the take-in reel (9).