JP3332749B2 - Work machine display - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotational speed detecting means for detecting a rotational speed of a power unit whose rotational speed is changed and adjusted by a manual rotational speed adjusting unit, and stores an appropriate rotational speed of the power unit. Appropriate rotation number storage means, rotation number display means for displaying rotation number information of the power unit, based on the information of the rotation number detection means and the appropriate rotation number storage means,
The present invention relates to a display device of a work machine provided with display control means for controlling operation of the rotation speed display means.

[0002]

2. Description of the Related Art In a display device of a working machine such as an agricultural machine or a construction machine such as a combine, for example, a display panel such as a control unit expands and contracts in a lateral direction as rotation speed information of a power unit such as a diesel engine. The detected number of revolutions is displayed on a graduated bar graph, and whether or not the detected number of revolutions is an appropriate number of revolutions stored in advance is notified by lighting a lamp or the like. Then, at the start of the operation of the machine, the operator manually operates the accelerator lever or the like serving as the rotation speed adjusting means while checking the bar graph display of the rotation speed and the lighting state of the lamp so that the engine rotation speed is adjusted to the appropriate rotation speed. The number was adjusted to match the number (for example, see Japanese Patent Application Laid-Open No. 4-335816).

[0003]

However, since the position corresponding to the proper rotation speed in the moving range of the bar graph is not indicated in the above-described conventional rotation speed display of a bar graph type or the like, the current engine rotation speed is not displayed. It is difficult to understand the degree of deviation from the proper rotation speed, and there is a problem that the operation of adjusting the engine rotation speed to the proper rotation speed cannot be performed smoothly.

In order to solve the above-mentioned problem, it is effective to use a bar graph or the like to display the number of rotations and to display a mark or the like indicating an appropriate number of rotations in a display area thereof. However, there is another disadvantage that the effective area for displaying other information is reduced by the area of the display area on which the mark is displayed, and that the display control is complicated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to solve the above-mentioned disadvantages of the prior art by effectively displaying a rotation speed of a power plant by a bar graph system or the like. An object of the present invention is to appropriately display a position at an appropriate rotation speed while preventing the area from being reduced.

[0006]

According to the first aspect, a rotation speed display image is displayed in which a portion displaying the detected rotation speed of the power unit moves along a set direction with a change in the rotation speed. An appropriate rotation speed position of the power unit in the rotation speed display image is indicated by an appropriate rotation speed mark provided on a side of a display unit that displays the rotation speed display image. And
The operator manually changes and adjusts the rotation speed of the power unit so that the portion displaying the detected rotation number of the power unit matches the position of the appropriate rotation number mark.

Accordingly, a proper rotation speed mark indicating the proper rotation speed position of the power unit is provided outside the display area of the display means, and it is possible to prevent the effective display area from being reduced while maintaining the display position of the detected rotation speed. The degree of rotation of the power unit deviating from the appropriate rotation number can be easily grasped by the positional relationship with the appropriate rotation number mark provided on the side of the power unit. Can be adjusted smoothly.

[0008] Also, different rotational speed as an appropriate rotational speed of the power device is configured to select, when the detected rotation speed of the power unit is matched to an appropriate rotational speed and the setting, the detected rotation speed position in the rotational speed display image The display state of the rotation speed display image is adjusted in accordance with the set appropriate rotation speed so that the portion where is displayed matches the position of the appropriate rotation speed mark.

Therefore, for example, even when a power device having a different appropriate rotation speed is installed for each of a plurality of working machines, it is only necessary to set the appropriate rotation speed to be stored to a different value. There is no need to perform complicated work such as changing the position of the mark according to the power unit to be mounted.
No.

According to claim 2, in claim 1, and a when not coincide with when the detected rotation speed of the power unit is coincident with the appropriate speed on a display unit provided on the rotation speed display means Are displayed separately.

Therefore, when the rotational speed of the power unit is changed so that the display position of the detected rotational speed coincides with the appropriate rotational speed mark, it is clearly shown that the detected rotational speed has reached the appropriate rotational speed. Thus, the operation of adjusting the number of revolutions can be performed more accurately, and the preferable means of claim 1 can be obtained.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a combine for agricultural work as a working machine will be described below with reference to the drawings. As shown in FIG. 1, the combine has a reaper 12 provided at a front portion of a body V having a pair of right and left crawler traveling devices 11.
A control unit 13, a threshing unit 14 for threshing and sorting the harvested grain culm, a Glen tank 15 for storing grains supplied from the threshing unit 14, and the like are mounted behind.

The cutting section 12 receives a weeding tool 16 attached to the tip, a grain stalk raising device 17, a cutting blade 18 for cutting the root of the raised grain stalk, and a cut grain culm on the tip side. And a transporting device 19 for transporting to the threshing unit 14. Further, an ultrasonic sensor S1 for detecting the height of the cutting unit 12 from the ground and a stock sensor S2 for turning on when the grain stalk touches to detect that the cutting operation is being performed are provided. The height information from the ground by the ultrasonic sensor S1 is used for cutting height control when cutting the culm, and the detection information of the stock sensor S2 is used as one of control start conditions.

In order to maintain the handling depth in the threshing unit 14 in an appropriate state, a pair of heads are separated at a predetermined interval in the length direction of the culm in order to detect the position of the head of the culm transported by the conveyor 19. A sensor S3 (see FIG. 6) is provided. Then, based on the detection information of the spike sensor S3, the conveying leading end of the conveying device 19 is swung in the culm length direction with respect to the rear end such that the spike of the grain culm is positioned between the pair of spike sensors S3. It is moved to adjust the handling depth.

The left and right crawler traveling units 11 are configured to be able to be individually driven up and down with respect to the body V. As a result, it is possible to perform the rolling control for maintaining the body V horizontal regardless of the inclination of the ground or maintaining the body V at the set angle. For this purpose, a rolling sensor S4 for detecting the inclination of the body V with respect to the horizontal is provided.

Next, a power transmission system is shown in FIG. The output of the diesel engine E as a power unit is transmitted to the threshing unit 14 via the threshing clutch 31 and transmitted to the transmission unit 34 of the crawler traveling device 11 via the traveling clutch 32 and the continuously variable transmission 33. Is done. A part of the output transmitted to the transmission section 34 is
Is transmitted to the reaping unit 12 via the. S7 is a threshing switch for detecting the on / off state of the threshing clutch 31;
Is a rotation speed sensor comprising an electromagnetic pickup for obtaining a sine wave having a frequency corresponding to the number of teeth per unit time by applying a magnetic field to the flywheel ring gear of the engine E (rotation speed detecting means for detecting the rotation speed of the engine E) S6 is a vehicle speed sensor provided in the mission unit for detecting the vehicle speed. The transmission section 34 is provided with a switching mechanism for switching the steering state between a forward state, a reverse state, and a neutral state. The neutral switch S8 detects the neutral state of the steering, and the reverse switch detects the reverse state. S9 is provided (see FIG. 6).

As shown in FIG. 3, the output of the engine E is changed by swinging the governing lever 42 of the governor 41. The governing lever 42 is biased to return to the starting side position in the figure by a spring or the like (not shown).
It is manually operated by a manual adjustment lever 44 interlockingly connected by a release wire 43, and the manual adjustment lever 44 can be held at a current operation position by a friction holding mechanism 45. And the governing lever 42
Is operated to a desired position by the manual adjustment lever 44, whereby the governor 41 is adjusted to the set output state. That is, the manual adjustment lever 44 corresponds to a manual rotation speed adjustment unit that changes and adjusts the rotation speed of the engine E. Normally, after the engine E is started by operating the manual adjustment lever 44 to the starting position, the engine E is operated to the output increasing side until a position where an appropriate rotation speed is achieved.

A continuously variable transmission 33 for increasing or decreasing the vehicle speed
Is manually operated by a shift lever and automatically operated by an electric motor. In other words, the engine speed decreases as the load on the engine E increases, so that when the load is appropriate and the engine speed is optimal, the vehicle runs at a constant speed, but when the load increases and the engine speed decreases, the engine speed decreases. If the load is reduced and the engine speed is higher than the optimal speed, the vehicle speed is increased to reduce the mowing amount, that is, the threshing process amount. The continuously variable transmission 3
The vehicle speed control for increasing / decreasing the traveling speed by shifting the speed of the vehicle 3 is performed. However, it does not become faster than the preset maximum vehicle speed.

As shown in FIG. 4, a display panel unit C for inputting command information such as start / stop of each control and displaying various information such as notification information to be notified to a worker in the operation of the combine is provided. As an integrated panel combining a liquid crystal display module and a membrane keyboard, the panel is provided at a position that is easy for the operator of the control unit 13 to see and operate. On the front surface of the display panel unit C, a display screen 1 for displaying images and key input units 2, 3, and 4 for inputting information are provided. Display screen 1
Is constituted by a liquid crystal graphic display of a dot matrix type. On this screen, operating information of the combine, such as an hour meter (operating time), rotation speed information of the engine E and load information thereof, is displayed. FIG. 4 illustrates a display state of the rotation speed information of the engine E. The key input units 2, 3, and 4 are configured by push-button switches, and include a start / stop switch 2 for each control, a changeover switch 3, and a storage switch 4.

FIG. 6 shows a control configuration of the combine. The meter controller 7 and the control unit 8 that constitute the control unit are each configured using a microcomputer, and are communicably connected to each other in an RS485 interface format. Stock sensor S2, head sensor S3, rotation speed sensor S among the sensors
5. Threshing switch S7, neutral switch S8, reverse switch S9, and fuel sensor S10 for detecting the remaining amount of fuel
Are input to the meter controller 7, and the detection information of the ultrasonic sensor S1, the rolling sensor S4, and the vehicle speed sensor S6 are input to the control unit 8.

From the meter controller 7, an actuator (oscillation motor) M1 for adjusting the handling depth, an AES
Actuator (relay, etc.) for (automatic engine stop)
Each drive signal for M2 is output, and the control unit 8 outputs drive signals for each of the actuators M3 to M4 for cutting height control and rolling control, the electric motor M5 for vehicle speed control, and the like.

The meter controller 7 and the control unit 8 control each actuator and electric motor M1 based on the detection information of each sensor and the control information set in advance.
To M5, etc. to drive the above-described respective controls (handling depth control, AE
S control, cutting height control, rolling control, vehicle speed control, etc.)
Execute For example, in the AES control, when an abnormality in the operating state or the like is detected, the AES actuator M2 is operated to cut off the fuel supply to the engine, and the engine is automatically stopped.

The information of the sensors is centrally managed by the meter controller 7, and based on the management result, the meter controller 7 performs the operation such as the engine speed and the engine load during a normal operation. The display is controlled so that the information is displayed on the display screen 1. The operation state of the key input units 2, 3, and 4 in the display panel unit C is detected by the meter controller 7. The start / stop switch 2 has a plurality of switches corresponding to each control as shown in FIG. 4 in order to instruct start and stop of each control described above.

The meter controller 7 is configured to detect whether or not the machine is in a working state (ie, a cutting work state). Specifically, when the stock sensor S2 and the threshing switch S7 are on, the neutral switch S8 and the reverse switch S9 are off, and the vehicle speed is 0.05 m / sec or more, the working state Otherwise, it is determined that it is not in the working state.

The meter controller 7 includes a memory 7A. The memory 7A stores, as information on an appropriate number of revolutions to be set by an operator by operating an accelerator lever at an early stage of operation, in accordance with the mounted engine E. For example, center value 260
0 rpm and respective values of the upper and lower setting allowable ranges are stored in advance. That is, the memory 7A corresponds to a proper rotation speed storage unit that stores a proper rotation speed of the engine E.

Next, the control operation on the combine side will be described with reference to the control flowchart of the meter controller 7 shown in FIGS. When the main key is turned on and the drive power supply is turned on and control is started, initialization of flags and the like is performed, and then the control unit 8
Communication control processing between the server and the server, management of notification information based on information of each sensor, display control processing for the display screen 1, and
A work control process is performed for each work unit. Although not shown, the control unit 8 also performs the same communication control processing and work control processing except for the management and display control processing of the notification information.

In the display control process (FIG. 8), operation information indicating the control state of each part of the machine is sequentially displayed on the display screen 1 as shown in FIG. That is, a predetermined time (2
Until the elapse of a predetermined time, it is determined whether or not the system is in a normal state. If not, an abnormal display is performed until the system is in a normal state. In a normal state, the engine is started and the set number of revolutions (50
0 rpm), the hour meter is displayed, and when the engine speed exceeds 500 rpm, the engine speed is displayed until the work condition of the reaping work is satisfied. As the state changes, the engine load is displayed instead of the engine speed.

FIG. 9A shows an hour meter (operating time).
(B) shows an engine rotation display indicating the magnitude of the engine rotation speed by a bar graph image moving rightward on the screen and the numeral display section 1c (rpm) at the right end of the screen. A load level represented by a number from 1 to 4 (the greater the number, the greater the load) is shown. In each display, the remaining fuel amount is displayed as a bar graph on the left end of the display screen 1.

That is, the display screen 1 corresponds to the rotation speed display means for displaying the rotation speed information of the engine E, and the display screen 1 has a bar 1a for displaying the detected rotation speed of the engine E. Is configured to display a rotation number display image that moves in a set direction (in the figure, a horizontal direction of the screen) in accordance with the change. As shown in FIGS. 4 and 5, an appropriate rotation speed mark 5 indicating a proper rotation speed position (a position at 2600 rpm) of the engine E in the rotation speed display image on the display screen 1 is provided on a side of the display screen 1. I have. Specifically, a triangular appropriate rotational speed mark 5 is provided by sticking (or printing) to a case portion corresponding to the upper and lower appropriate rotational speed positions on the display screen 1.

Further, as shown in FIGS. 4 and 9, when the detected rotation speed of the engine E is out of the proper rotation speed (2600 rpm), rp is displayed on the numeral display section 1c at the right end of the screen.
When m is displayed and the number of rotations matches the appropriate number of revolutions, the numeral display section 1c at the right end of the screen changes to a negative image, and the character of rpm changes to OK. That is, the display screen 1 is provided with the numeral display section 1c as a display section for displaying when the detected rotation speed of the engine E matches the appropriate rotation speed and when it does not match.

The display controller 100 controls the operation of the display screen 1 based on the information of the rotation speed sensor S5 and the memory 7A by using the meter controller 7 (see FIG. 6). Here, the display control means 1
00 is, for example, depending on the type of the engine E to be mounted,
A different rotation speed is selected and settable as the proper rotation speed, and the detected rotation speed position in the rotation speed display image is set when the detected rotation speed of the engine E matches the set proper rotation speed. The display state of the rotation speed display image is adjusted in accordance with the set proper rotation speed so that the portion 1a to be displayed matches the position of the proper rotation speed mark 5. FIG. 10 illustrates a display state in a case where three of 2700, 2900, and 3200 rpm are selected and set as the appropriate rotation speed.

As shown in FIG. 9 (b), the rotation speed display image indicates the proper rotation speed of the engine E (2600 rpm).
m) In the high resolution display state, the moving amount for the change in the unit rotation speed near the position is displayed larger than the moving amount for the change in the unit rotation speed at the other rotation position. The display resolution on the lower rotation speed side than the proper rotation speed position is displayed with a higher resolution as the closer to the proper rotation speed position. Specifically, 0 to 1000 rpm, 1000 to 2000 rpm,
The display resolution in each range of 2000 rpm or more is sequentially increased.

[Another Embodiment] The manual rotation speed adjusting means for changing and adjusting the rotation speed of the power unit E is connected to the control unit instead of the manual lever 44 mechanically linked to the governor 41 of the engine E. It may be a volume or the like. In this case (so-called “electronic governor”), the control unit controls the engine E to a predetermined rotational speed based on information on the adjustment position such as the volume. still,
The power unit E may be a gasoline-type engine or the like in addition to the diesel type.

In the rotation speed display means (display screen 1),
The rotation speed display image is not limited to the bar graph display extending in the horizontal direction as in the above-described embodiment, and may be an arc bar extending in an arc shape, and a mark indicating the position of the detected rotation speed is moved instead of the bar graph. It may be something. The display screen 1 constituting the rotation speed display means may be constituted by a CRT display or the like other than the liquid crystal graphic display.

The proper rotation speed mark 5 is not limited to the shape as in the above embodiment. For example, as shown in FIG. 11, a straight line mark 5 along the vertical direction may be used. Also, it may be only one side (for example, the upper side) instead of the upper and lower sides of the display screen 1. or,
For the monochrome LCD screen 1, the appropriate rotation speed mark 5
It can be displayed in a color such as red or green to make it even easier to see.

A bar 1a, which is a portion for displaying the detected rotation speed of the engine E, is used as a display section for displaying the detected rotation speed of the engine E separately from when the detected rotation speed matches the appropriate rotation speed. It can also be used. In this case, for example, when the detected rotation speed does not match the appropriate rotation speed, the bar 1a is blinked, and when the detected rotation speed matches the appropriate rotation speed, the bar 1a is changed to continuous lighting.

In the above-described embodiment, the present invention is applied to a combine for agricultural work as a working machine. However, the present invention can be applied to various kinds of agricultural work machines other than the combine, and civil work machines.

[Brief description of the drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a power transmission diagram of a combine.

FIG. 3 is an explanatory diagram of an operation unit of the engine.

FIG. 4 is a front view of a display panel provided in the combine.

FIG. 5 is a partially transparent side view of the display panel.

FIG. 6 is a block diagram of a control configuration of the combine.

FIG. 7 is a main flowchart of control.

FIG. 8 is a flowchart of display control.

FIG. 9 is a diagram of a display screen for displaying operation information.

FIG. 10 is a diagram showing a display screen of rotation speed information.

FIG. 11 is a diagram illustrating a display screen of rotation speed information according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 rotation number display means 1a display section 1c display section 5 appropriate rotation number mark 7A appropriate rotation number storage means 44 rotation number adjustment means 100 display control means E power unit S5 rotation number detection means

Continuation of the front page (56) References JP-A-5-84011 (JP, A) JP-A-6-42982 (JP, A) JP-A-4-335816 (JP, A) JP-A-6-269058 (JP) JP-A-59-224567 (JP, A) JP-A-62-58761 (JP, U) JP-A-60-96128 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB A01D 41/02-69/00 G05B 23/00-23/02

Claims (2)

(57) [Claims] 1. A rotational speed detecting unit for detecting a rotational speed of a power unit whose rotational speed is changed and adjusted by a manual rotational speed adjusting unit, and an appropriate rotational speed storage unit for storing an appropriate rotational speed of the power unit. A rotation speed display unit for displaying rotation speed information of the power unit; and a display control unit for controlling the operation of the rotation speed display unit based on information of the rotation speed detection unit and the appropriate rotation speed storage unit. A display device of the work machine provided, wherein the rotation speed display means displays a rotation speed display image in which a portion displaying the detected rotation speed of the power unit moves along a set direction with a change in the rotation speed. is configured to display, the appropriate rotational speed mark indicating a proper rotational speed position of the power unit in the rotational speed display images are found provided on the side beside the rotational speed display means, said display control means, the appropriate Rotation speed and Rotation different Te
The number is selectable and can be set freely.
If the detected rotation speed of the
At this time, the detected rotational speed position in the rotational speed display image is displayed.
The indicated part matches the position of the appropriate rotational speed mark.
As described above, the display state of the rotation speed display image is set appropriately.
A display device of a work machine configured to adjust according to a rotation speed . 2. The system according to claim 1, wherein said rotation speed display means comprises:
When the detected rotation speed matches the appropriate rotation speed
The display device for a work machine according to claim 1, further comprising a display unit that displays the state when the work machine is not present.