JP2641650B2 - Vehicle speed control system for all culms - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reel-type reaping unit for reaping a grain stalk rearward by a reel, and a raising device for raising the stalk by a raising device. The driving transmission is automatically exchanged with a mowing unit attached to the vehicle so that the load of the engine is maintained at a set target load based on information of a load detecting means for detecting a load state of the engine. The present invention relates to a vehicle speed control device of an all-culm-in type combine which is provided with a vehicle speed control means to be operated.

[0002]

2. Description of the Related Art Conventionally, a vehicle speed control device of this type has been proposed in which, as the vehicle speed increases in a combine, the amount of cereal culm to be harvested increases and the load on the engine increases.
Since the vehicle speed and the engine load correspond to each other, the vehicle speed is automatically adjusted according to the load, so that the engine load state can be maintained at the target load.

Further, the upper limit vehicle speed of the appropriate vehicle speed range at the time of shifting control is different depending on the cutting type of the cutting pre-processing unit for cutting the grain culm in the field. In other words, when the mowing unit equipped with a raising device that causes the grain culm by the raising device is mounted, when the harvesting vehicle speed increases, the raising device causes threshing of the planted grain culm and removal of the planted grain culm from the stock. In order to cause a problem, the upper limit vehicle speed in the appropriate vehicle speed range must be set to a lower speed side than when a reel-type reaping unit that scrapes the grain stem backward by a reel is mounted.

Conventionally, the setting of the upper limit vehicle speed corresponding to the type of mowing of the mowing pre-processing unit has been performed by a worker using a manual setting device such as a volume control.

[0005]

However, in the manual setting of the upper limit vehicle speed, not only does the setting operation become complicated, but it is not possible to effectively prevent operation errors or forgetting to operate. For this reason, when an operation error or forgetting operation is carried out when the mowing unit with the raising device is mounted, the vehicle speed becomes too high, and the problems such as the grain shedding and the drop out of the stock may occur.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object the purpose of setting the upper limit of the shift control range of the vehicle speed control means according to the model even when the mowing section of the mowing pre-processing section is replaced. Automatically control the vehicle speed to the appropriate value .
Solves the complexity of manually changing the upper limit vehicle speed.
The mowing unit with the raising device caused by an operation error etc.
The object of the present invention is to prevent the occurrence of problems such as threshing from the planted grain culm and dropping out of the stock of the planted grain culm due to excessively high vehicle speed when the vehicle is mounted .

[0007]

According to the present invention, there is provided a vehicle speed control apparatus for an all-culm-in type combine which is provided with mounting state detecting means for detecting which of the two types of mowing parts is mounted. is, the vehicle speed control means, on the basis of the detection information of the mounting state detecting means, who when than when wearing the reaper of the reel wearing the reaper dated the Pick apparatus, the shift control Maximum possible vehicle speed value
The point is that it is configured to be lower .

[0008]

According to the characteristic structure of the present invention, when the vehicle speed control means detects that the mowing part with the device is mounted in the pre-cutting processing part from the detection information of the mounting state detecting means, The upper limit vehicle speed value at which the shift can be controlled is made lower than when a reel type reaping unit is mounted on the reaping pre-processing unit .
Thus, the speed change is controlled in a range where the vehicle speed is lower than when the reel type mowing unit is mounted .

On the other hand, when the vehicle speed control means detects from the detection information of the mounting state detecting means that a reel type reaping section is mounted on the pre-cutting processing section, a shift control can be performed.
Since the upper limit vehicle speed value is raised in the pre-cutting processing unit and is higher than when the cutting unit with the device is attached , the
The shift control is performed in a range where the vehicle speed is higher than when the mowing unit with the raising device is mounted .

[0010]

Therefore, according to the characteristic structure of the present invention, the cutting section of the pre-cutting section is either a reel type or a type with a raising device.
Even when the mowing part is replaced, the speed is automatically controlled so that the shift range of the vehicle speed control becomes an appropriate value according to the model .
Solves the complexity of manually changing the upper limit vehicle speed.
The mowing unit with the raising device caused by an operation error etc.
It has become possible to appropriately prevent the occurrence of problems such as shedding of the planted grain culm and dropping of the plant due to excessively high vehicle speed when the garment is mounted .

[0011]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 2 and FIG. 3, the whole-culm-insertable combine has a threshing device 3 mounted on a body K provided with a pair of left and right crawler traveling devices 1, and a boarding operation unit 2 provided at a front portion of the body K. In front of the boarding operation unit 2, a pre-cutting unit 4 is provided so as to be vertically movable about a horizontal axis along the machine body width direction.

The pre-cutting processing unit 4 is a reel-type cutting unit 4A for scraping the grain stem backward by the reel 6 (see FIG. 2).
The cutting unit can be exchanged so that both the cutting unit 4B (see FIG. 3) with the raising device that causes the grain stem by the raising device 10 can be mounted.

Referring to the reel type cutting unit 4A, as shown in FIG. 2, a weeding device 5 provided at the tip of the cutting unit 4A, and a reel for scraping the planted grain culm in the field to the rear side of the machine body K. 6. A clipper-type cutting blade 7 for cutting off the root of the stalked grain stalk, an auger 8 for receiving the cut stalk and sending it to the rear of the machine K, and a grain stalk sent from the auger 8 to the threshing device. 3 and a feeder 9 for picking up and transporting.

The mowing unit 4B with the raising device will be described. As shown in FIG.
0, a lower cutting blade 7 for cutting the stem of the raised grain stalk, a transport device 11 for nipping and transporting the harvested grain stalk toward the rear of the machine in an upright posture, from the root side of the grain stalk to be transported. The upper cutting blade 12 that cuts the upper part, the auger 8 that feeds the tip side of the cut culm laterally to the center of the cutting unit and joins, and the tip part of the grain culm sent out from the auger 8 is the threshing device. 3 and a feeder 9 for picking up and transporting. The members having the same functions as those of the reel type mowing portion 4A among the members constituting the mowing portion 4B with the raising device are denoted by the same reference numerals as those of the reel type mowing portion 4A. is there.

In the case of using either of the two cutting units 4A and 4B, only the front part of the feeder 9 is replaced so that the part behind the feeder 9 can be shared. As shown in FIG. 1, any one of the two mowing portions 4A and 4B is connected to a connector 13 for connecting wiring to various sensors and actuators mounted on the mowing portions 4A and 4B to the body side. A mounting state detecting means for detecting whether or not is mounted is configured. In addition, for example, the connection state of the connector 13 with respect to a specific pin is determined by the two cutting sections 4A,
By changing the connection state of the connector on the reaping unit side so as to be different depending on which one of the 4B is mounted, it is possible to determine the connection state of the connector 13 to a specific pin, so that any reaping is possible. It will be possible to automatically detect whether or not the unit has been mounted.

As shown in FIGS. 2 to 4, the threshing apparatus 3 comprises a handling room A into which all of the harvested grain culms conveyed by the feeder 9 are introduced, and a material treated to leak from the handling room A. And a sorting device B that performs a sorting operation with respect to. And, on the ceiling cover 14 of the grain stem entrance side portion of the handling room A,
A contact type grain stalk detection sensor S0 for detecting whether or not the handling room A is in a grain stalk supply state is mounted.

The grain stalk detection sensor S0 will be described in further detail. The sensor is provided so as to be swingable about an axis parallel to the rotation axis C of the handling drum 15 so as to contact the processed material in the handling chamber A. Contact piece 16, a spring 17 for urging the contact piece 16 toward the handling cylinder 15, and a contact piece 1.
6 is provided with a switch 18 that is turned on in accordance with the swing of more than a set value. That is, when the cereals are supplied to the handling room A, the contact piece 16 comes into contact with the processed material to be processed by the handling cylinder 15 and the switch 18 is turned on to detect that the cereals are in the supply state, In addition, when the supply of the grain stalk to the handling room A is stopped and the switch 18 is turned off, it is possible to detect that the grain stalk is not being supplied. However, although not described in detail, the contact piece 16 is brought into a state where the grain stem intermittently comes into contact with the contact piece 16.
In the case where 8 is in the OFF state continuously for a set time (for example, 2 seconds) or longer, it is determined that it is in the non-supply state.

Next, a control configuration of the combine will be described. As shown in FIG. 1, the output of the engine E is transmitted to a threshing device 3 such as the handling cylinder 15 via a belt tensioning type threshing clutch 19, and a hydraulic continuously variable transmission as a traveling transmission. The belt is transmitted to 20,
The output of the transmission 20 drives the crawler traveling device 1 via a transmission case 24. The output of the transmission 20 is transmitted to the pre-cutting unit 4 via a belt tension type cutting clutch 25.

A manually operated shift lever 21 provided on the boarding operation section 2 and the transmission 20 are linked and connected via a link mechanism.
An electric motor M for shifting as an actuator for operating the shift gear 0 is interlocked with the link mechanism via a friction type transmission mechanism 22 so as to give priority to shifting by the shift lever 21. Further, the engine E is provided with a rotation speed sensor S1 as load detecting means for detecting the load state based on the rotation speed. That is, since the engine E decreases in rotational speed in response to an increase in the load, the speed change motor M is operated based on the information from the rotational speed sensor S1 to control the vehicle speed. . Further, a vehicle speed sensor S3 as a vehicle speed detecting means for detecting the vehicle speed V of the combine by detecting the number of rotations is provided on the rotating shaft of the transmission case 24.
Is attached.

In the figure, S2 is a threshing switch for detecting whether the threshing clutch 19 is engaged or disengaged, and SW1 is a vehicle speed control means 100 which will be described later.
In the vehicle speed range equal to or lower than the set upper limit vehicle speed VU, the traveling transmission 20 is controlled so that the engine load is maintained at the target load.
Is a changeover switch for switching between a vehicle speed control mode in which the vehicle speed is controlled by automatically operating the vehicle speed control and a manual vehicle speed control mode in which the vehicle speed is manually shifted.

A control device 23 using a microcomputer is provided. The control device 23 includes the grain stalk detection sensor S0, the rotation speed sensor S1, the threshing switch S2, the vehicle speed sensor S3, and the changeover switch SW1.
, And a signal from the connector 13 for detecting which of the mowing units 4A and 4B is mounted is connected. Then, using the control device 23,
A vehicle speed control means 100 for automatically operating the traveling transmission 20 based on the information from the rotational speed sensor S1 so that the load of the engine E is maintained at a set target value.
Is configured.

In other words, the cereal stalk detection sensor S0
Is off and the threshing switch S2 is on, a no-load state for the engine E, and during the no-load state, the rotation speed sensor S1
The detected rotation speed X of the engine E detected as described above is updated and stored as a reference rotation speed ST for determining the magnitude of the engine load (see FIG. 5).

When the stalk detection sensor S0 is in the ON state, the load is applied to the engine E. During the load applied state, the reference rotational speed ST and the detected rotational speed X Engine load S which is the difference between
The transmission electric motor M is operated to automatically operate the transmission 20 so that TX is maintained at the target load (see FIG. 5).

Next, a procedure for controlling the vehicle speed will be described with reference to a flowchart shown in FIG. First, the grain culm detection sensor S0 is off and the threshing switch S2 is
When N, the engine speed X at this time is updated and stored as the reference speed ST. When both the grain culm detection sensor S0 and the threshing switch S2 are OFF,
When the cereal stalk detection sensor S0 is ON, the above update storage is not performed. Note that the update of the reference rotation speed ST is as follows.
The control is performed only when the engine speed becomes higher than the previously stored value, so that the control does not become unstable.

Next, the state of the changeover switch SW1 is detected, and if it is on the manual side, the operation mode is the manual vehicle speed control mode, and the procedure returns to the first procedure. Although not described in detail, the manual vehicle speed control mode is a mode in which the operator can manually freely perform a shift operation by the shift lever 21. If it is on the automatic side, the vehicle speed control mode is set. If the grain stalk detection sensor S0 is OFF, the process goes to the manual vehicle speed control mode without doing anything. That is, when the grain culm detection sensor S0 is OFF, it is in the non-cutting state, and it is determined that there is no need to control the vehicle speed based on the engine load detection information.

On the other hand, if the cereal culm detection sensor S0 is ON, the vehicle is in the harvesting state, and the vehicle speed is controlled by the detection information of the engine load. First, the engine speed X is detected by the speed sensor S1, and it is checked whether or not the engine load ST-X, which is a difference from the reference speed ST, is the target load. As a result, if the load is larger than the target load, it is determined that the vehicle is in an overload state, and the speed reduction operation is performed. If the load is smaller than the target load, the speed is increased, but before that, it is detected by the signal from the connector 13 that the cutting unit 4B with the raising device is attached to the cutting pre-processing unit 4. At this time, the upper limit vehicle speed VU of the shift operation range is set to a low speed side of, for example, 1.2 m / sec. If the detected vehicle speed V is lower than this vehicle speed, a predetermined speed-up operation is performed. The upper limit vehicle speed VU is not limited when the reel type mowing unit 4A is mounted.

As described above, the vehicle speed control means 100
Based on the detection information of the state detection means (connector 13).
With a raising device than when the blade-type mowing part 4A is attached
When the mowing part 4B is mounted, the shift control can be performed.
The vehicle speed limit value is configured to be low. [Another embodiment] In the above embodiment, the case where the load on the engine E is detected based on the number of revolutions thereof has been described. However, for example, the load may be detected based on the torque of the engine E or the like. The specific configuration of each unit, such as the specific configuration of the load detection unit S1, can be variously changed.

In the above embodiment, the mounting state detecting means 13 for detecting the type of the mowing unit mounted on the pre-cutting processing unit 4 is described.
Although a configuration using a connector has been shown, a microswitch or the like may be used instead of the connector.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration of the attached drawings by the entry.

[0030]

[Brief description of the drawings]

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

FIG. 2 is a schematic side view of a combine equipped with a reel-type cutting unit.

FIG. 3 is a schematic side view of a combine equipped with a mowing unit with a raising device.

FIG. 4 is a cutaway front sectional view of a handling room of a threshing unit.

FIG. 5 is a flowchart of vehicle speed control.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 4 Cutting pre-processing section 4A Reel type cutting section 4B Cutting section with raising device 6 Reel 10 Raising device 13 Mounting state detecting means 20 Running transmission 100 Vehicle speed control means E Engine S1 Load detecting means

Claims (1)

(57) [Claims] 1. A pre-cutting unit (4) for cutting a culm in a field, a reel-type reaping unit (4A) for scraping the culm backward by a reel (6), and a grain by a raising device (10). reaper dated to cause cause culms device and (4B) exchanged freely configured, load on the basis of the information of the engine load detecting means for detecting a load state of (E) (S1) an engine (E) is A vehicle speed control device of an all-culm-in type combine provided with a vehicle speed control means (100) for automatically operating a traveling transmission (20) so as to be maintained at a set target load. A mounting state detecting means (13) for detecting which of the model mowers (4A, 4B) is mounted is provided, and the vehicle speed control means (100) is provided with the mounting state detecting means (13). Based on the detection information, Reaper dated the Pick device than when wearing the Le expression reaper (4A) is more when fitted with (4B), the shift control can limit
A vehicle speed control device for an all-culm input combine that is configured to lower the vehicle speed value .