JPS63148922A - Running control apparatus in working vehicle - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a travel control device for a work vehicle such as a combine harvester, and more specifically, it is designed to enable an operator to operate the machine even when he is away from the driver's seat. The present invention relates to a traveling control device.

(b) Prior Art Conventionally, a working vehicle, such as a combine harvester, has cut the n-meat planted in a field by operating a cutting blade and traveling while raising and lowering the pre-processing section as appropriate. In addition, even after the harvesting process is completed, culms remain uncut in the corners of the field, and culms are gradually remaining in the cut areas due to falling over or coming off the cutting blade. Some of the grass is left unharvested.

In order to dispose of these uncut husks, the operator temporarily stops steering the combine while the automatic threshing device is still running, gets out of the driver's seat, and manually reaps the uncut husks remaining in the field. The threshing process is carried out by manually putting the grain into the opening of the threshing device, which has a feed chain.

←→ Problems to be Solved by the Invention However, when the above-mentioned conventional combine harvester is threshing the husks collected from the field while stopped at the same location, the straw from this operation may be damaged by the cutter or knock. If the work is continued, the straw will bulge up and clog the straw outlet of the cutter or knock. Furthermore, if piles of waste straw are created in several places in the field using this method, not only will the appearance be bad, but the compostability of the waste straw will also be impaired. For this reason, the operator has to occasionally interrupt the rough work to remove straw that has accumulated under the cutter or knock, or return to the operator's seat and move the machine to another location to continue the rough work. However, especially when there is only one operator or a small number of operators, the operator has to repeatedly carry out work and driving, which is hard work and increases the burden on the operator, and also reduces his or her attentiveness. There is a risk of being caught in the feed chain.

(5) Means for Solving the Problems The present invention aims to solve the above-mentioned problems. For example, as shown in FIG. A working vehicle [1 in which a work vehicle is equipped with a shift lever 13, an actuator 32 for operating the continuously variable transmission 31, and a shift position detection means 37 for detecting the shift position] The operating means 19 is provided with an operating means 19, and further includes a setting means 33 for appropriately setting the continuously variable transmission 31, and a comparing means 35 for comparing signals from the setting means 33 and the shift position detecting means 37. After receiving a signal from
Continuously variable transmission 31 based on the number I from the comparison means 35.
The present invention is characterized in that the actuator 32 is configured to operate so that the speed reaches a set speed.

(E) Function Based on the above-mentioned configuration, when carrying out work such as collecting and threshing the husks left in the field by hand, the operator stops the work vehicle 1 at an appropriate work position, and at the same time stops the work vehicle 1 at a continuously variable speed. Move the lever 13 to the forward range F (or reverse range R) at its neutral position N and leave the driver's seat 10. In this state, the operator begins the manual work,
When the work is finished, or when the straw is piled up below the straw discharging port 18 of the automatic threshing device 6 (see FIG. 4), the operation means 19 is activated to move the working vehicle w41 to another working position. operate. Then, the setting means 33 appropriately sets the continuously variable transmission 31 based on the operation of the agitation means 9, and detects the operating amount of the actuator 32 to detect the shift position of the continuously variable transmission 31. The signal from the detection means 37 and the signal from the setting means 33 are compared to the comparison means 35.
Further, the operating amount of the actuator 32 is appropriately adjusted based on the signal from the comparison means 35, and the continuously variable transmission 31 is driven at the set speed. As a result, the working vehicle fii11 is moved forward or backward at a predetermined set speed to the next working position, and is stopped when the operator stops operating the operating means 19. and,
The cutting work is started again at the work position.

(F) Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIGS. 3 and 4, the combine 1 has a body 3 supported by crawlers 2.
An automatic threshing device 6 equipped with a feed chain 5 is disposed on one side thereof. Further, in the front of the body 3, a pre-processing section 7 is disposed so as to be movable up and down, and on the side of the pre-processing section 7, a narrow guy 9 is installed so as to be movable up and down. Further, a driver's seat 10 is arranged on the other side of the aircraft body 3, and an operating panel 11 is arranged in front of the driver's seat 10, and a crank-shaped lever Ff412 is mounted on the operating panel 12 provided on the side of the operating panel 11. a is formed, and the lever groove 12a
A continuously variable speed lever 13 is installed on the holder so that the lever 13 can be freely shifted. Further, on the front side of the automatic threshing device 6, there is installed an operation switch system 19 consisting of a cut-off running switch 15, a left direction correction switch 16, and a right direction correction switch 17 (see FIG. 1).

In addition, what is shown by 18 in the figure is a straw outlet.

On the other hand, as shown in FIG. 1, the shift position by the continuously variable shift lever 13 is detected by a potentiometer 20, and the detected value is input to a microcomputer 21 (hereinafter referred to as microcomputer). Furthermore, the side clutch solenoids 26 and 27 for switching the left and right side clutches 23 and 25 are output from the microcomputer 21 to the missile case 22 installed in the fuselage 3, respectively. The clutches 23, 25 are configured to be disconnected and connected as appropriate. Further, a continuously variable transmission device 31 is configured by the drive side split pulley 29 and the wave side split pulley 30, and a hydraulic actuator 32 made of a double-acting sill that changes the width of the drive side split pulley 29 is installed. Furthermore, the means running switch 15, left direction correction switch 16, and right direction correction switch 17 of the operation switch system 19 are configured so that operation signals are sent to the microcomputer 21 when they are operated. The signal from 15 is input to setting means 33 provided in microcomputer 21 and sent to comparison means 35 also provided in microcomputer 21 .

Furthermore, the piston rod 3 of the hydraulic actuator 32
6 is a potentiometer 37 that detects its expansion/contraction position.
The detection value from the button meter 37 is input to the comparison means 35. Then, the setting means 33 initially issues a setting signal to the comparison means 33 for causing the body 3 to travel at a low set speed, and when the solenoid valve 39 is operated thereby, the f filling of the piston rod 36 is moved to the point. It is detected by the tension maker 37 and inputted to the comparison means 35.

Then, the detected value and the setting signal from the setting means 33 are compared by the comparing means 35, and as a result, the actuator 3
2 is further extended, contracted, or stopped, so that the continuously variable transmission 31 is brought to a speed change position corresponding to the setting signal.

Further, the crank-shaped lever guide groove 12a formed in the steering panel 12 has a forward movement area F on its negative side and a reverse movement area R on the other side, and these forward movement areas F and reverse movement area R are connected. The intermediate portion is set as a neutral position N, and when the lever 13 is swung toward the fuselage tank at the neutral position N to switch to the forward range R side or the reverse range R side, the means travel switch 15 is operated. Then, the continuously variable transmission 31 is operated at a preset low speed while the main clutch 40 is connected by the above-described action, and the combine 1 is driven forward or backward at a low speed. In addition, 41, 4 in the figure
2 are an engine and a counter case, respectively.

In addition, in the reverse range R of the continuously variable transmission lever 13,
The entire process from 9 to v9 in forward range F is the same as v9 in forward range F or reverse range R with neutral position N as the border.
9, the potentiometer 20 is configured to detect the magnitude of each positive value. Further, the cylinder stroke of the hydraulic actuator 32 is detected by a potentiometer 37, and by setting the set value of the cylinder stroke at a position where the continuously variable transmission 31 is operated at a low speed, the cylinder stroke can be detected by the potentiometer 37. When operated with the shift lever 13, the cylinder stroke increases straightly, but when operated with the shortcut travel switch 15,
The actuator 32 is configured to stop the actuator 32 from rising at the set value and maintain this state.

Since this embodiment has the above-described configuration, when performing manual threshing of the uncut husks remaining in the field after harvesting with the combine harvester 1, the operator can Stop the machine 3 with the automatic threshing device 6 operating near where the cut culm is planted, and set the continuously variable transmission lever 13 to the forward range R side (or the reverse range R side) at the neutral position N. and leave the driver's seat 10 (Sl). Then, the operator harvests and collects the uncut shell culms around the machine body 3, and then sequentially inserts the shell culms through the opening 6a of the automatic threshing device 6 to perform the threshing operation, and checks whether or not the uncut shell culms around the machine body disappear. When the straw has risen too much below the straw drainage port 18, the operator interrupts the means work and operates the means running switch 15 of the operating switch system 19 (
S2).

Then, the = sign sent from the switch 15 is input to the setting means 33 (S3), and as a result, the setting means 33 outputs a setting signal to the comparison means 35 for making the aircraft 3 travel at the set low speed. Be it.

Then, based on the setting signal, a signal is output from the comparison means 35 to the solenoid valve 39, and the valve 39 is operated to operate the hydraulic actuator 32. This (from this), the f middle tank of the piston rod 36 is connected to the potentiometer make 3.
7 and the detected value is input to the comparing means 35, the setting signal and the detected value are compared by the comparing means 35 (S4). If the detected value is larger than the set value of the set signal, the hydraulic actuator 32 is contracted and decelerated to approach the set speed (S5), and if the detected value is smaller than the set value of the set signal, the actuator 32 is
is expanded and the speed is increased to approach the set speed (S6)
. Further, if the detected value and the set value are equal, the actuator 32 is immediately stopped and its speed is maintained.

Therefore, the combine harvester 1 runs at the set low speed,
When the operator reaches the next work position, the machine is stopped by turning off the short drive switch 15.

Then, the means work is started again at this position.

Note that while the combine harvester is traveling at the set speed, the direction of the machine body 3 is corrected by operating the left direction correction switch 16 and the right direction correction switch 17 arranged in the operation switch system 19.

Further, in this embodiment, an operation switch system 19 is installed on the front side of the threshing device 6, and the switch 15,
By operating the combine harvester 16 and 17, the combine harvester 1 was configured to be able to travel at a set low speed while correcting the direction left and right. In addition to the left and right direction correction switches 16 and 17, the operating switches 19' provided on the front side include running changeover switches 43 and 45 that can run at a set speed and switch forward and reverse at the same time, and alarms when starting and stopping. alarm switch 46, engine stop switch 47, up/down switches 49, 50 of the n processing section 7, parking brake operation switch 51, on/off switch 5 for each work machine
2. Operation switch 5 that operates the auger of the grain tank
3, etc., so that during work such as work such as work, it is possible to run, correct direction, operate the auger, etc. while staying in the work position of work without having to return to the driver's seat each time. It may be configured to improve performance. Note that the installation location of the operation switch systems 19 and 19' is not limited to the front side of the threshing device 6, but it goes without saying that the operation switch systems 19 and 19' may be installed at any other location that is easy to operate.

Furthermore, as shown in FIG. 6, an alarm system fi55 is installed which issues a warning using a horn, flasher, etc. in response to a signal from the microcomputer 21 based on the operation of the sloppy running switch 15. The alarm device 55 issues an alarm twice just before starting to run (a) by operating the short drive switch 15, and while running (b), it emits a short pulse sound and flashes a flasher lamp to alert the surroundings. The structure is configured so that the operator can clearly identify whether the vehicle is traveling by operation from the driver's seat 10 or by operating the sloppy travel switch 15, to urge caution, and to ensure safety during work. Also good.

In addition, in this embodiment, when the sloppy driving switch 15 is operated to perform sloppy driving, the F-R continuously variable transmission lever 13 is set to either the forward range F side or the reverse range R side in the neutral position N. However, in addition to installing a forward movement detection means that detects that the F-R continuously variable transmission lever 13 is in the forward range F side, the driver's seat 10
The configuration is configured such that the operation of the continuously variable transmission lever 13 at the position is shifted, and the sloppy driving is performed only when the lever 13 is set to the forward range F side in the neutral position N (while the aircraft is stopped) as detected by the detection means. The operator tried to move the aircraft 1 forward by means of driving, but the gear shift lever 13 was mistakenly set to the reverse range R side, causing the aircraft 3 to move backwards against his will, creating a danger. This prevents malfunctions such as being put away, or tilting of the aircraft 3 due to running into a pile of waste straw due to reversing, and also prevents malfunctions such as when the machine 3 is tilted due to the operation of the continuously variable speed lever 13.
Even if the switch 15 is turned on, the switch 15 may be activated to prevent problems such as a sudden drop in travel speed.

It goes without saying that the operation of the cut-off travel switch 15 is not limited to the cut-off work, but may also be used when loading and unloading a combine harvester.

(g) As described in detail, according to the present invention, the continuously variable transmission 31
A comparison means 35 compares signals from the setting means 33 and the shift position detection means 37, and receives a signal from the operation cutter 19 provided at a position other than the driver's seat 10. Based on the signal from the comparison means 35, the actuator 3 is operated so that the continuously variable transmission 31 reaches the set speed.
2 is configured to operate, so when the operator leaves the driver's seat 10 and performs shortcut work, the operator does not have to return to the driver's seat 10 every time the work is completed, and the operator can operate the vehicle 1 from outside the machine 3. The machine can be run at a set speed (for example, low speed) and easily moved to the next work position, which improves work efficiency, reduces the burden on the operator, and improves safety during work. can be secured.

Furthermore, when the operation means 19 is operated, the continuously variable speed lever 13 is in the neutral position W! If it is configured so that it only works when it is in the forward movement area F at IN, the car will move against the operator's will.
To further improve the reliability of a traveling side push device by preventing a malfunction in which a machine body 1 moves backward, and also prevents malfunctions in which a machine body 3 runs backward and runs on a pile of waste straw, causing a danger due to the tilting of the machine body 3. I can do it.

[Brief explanation of the drawing]

Fig. 1 is a system configuration diagram according to the present invention, Fig. 2 is a flowchart showing its operation, Fig. 3 is a plan view showing the entire combine, Fig. 4 is a side view thereof, Fig. 5 f and l are operation switches. Figure 5 is a perspective view showing the operating switch system in detail, and Figure 6 is a diagram of another embodiment with a different system, as seen from the front of the aircraft. This is an example evening time chart. 1... Work vehicle (combiner), 3... Aircraft.
, 10... Driver's seat, 13... Continuously variable speed lever (
F/R continuously variable transmission lever), 19...operation means (operation switch system), 31. continuously variable transmission device, 32...
・Actuator (hydraulic actuator for continuously variable transmission)
, 33...setting means, 35...comparing means,
37... Gear shift position detection means (potentiometer)
.

Claims (2)

[Claims] (1) In a work vehicle that is equipped with a continuously variable transmission and a continuously variable transmission lever, an actuator that operates the continuously variable transmission, and a shift position detection means that detects the shift position thereof, the operation of the machine An operating means is installed at a position other than the seat, further comprising a setting means for appropriately setting the continuously variable transmission, and a comparison means for comparing signals from the setting means and the shift position detecting means, A travel control device for a work vehicle, characterized in that the actuator is configured to operate the actuator so that the continuously variable transmission reaches a set speed based on the signal from the comparison means. (2) The travel control device according to claim 1, wherein the operating means is operated only when the continuously variable speed lever is in a forward movement range in a neutral position.