Work machine

Abstract

Provided is a work machine with which it is possible to achieve both a great increase and decrease in engine rotational speed and ease of fine adjustment. This work machine is provided with: a power device that is rotationally driven; the working device acts by taking the power device as a power source; and an indicating device for indicating the increase and decrease of the rotational speed of the power device, the indicating device having a first indicating device and a second indicating device, the minimum change unit of the rotational speed of the power device indicated by the first indication device is different from the minimum change unit of the rotational speed of the power device indicated by the second indication device.

Description

Technical Field

[0001] The present invention relates to working machinery having an indicator device that indicates the rotational speed of a power unit such as an engine, which serves as a power source for operating the working device. Background Technology

[0002] Hydraulic excavators and other operating machines are equipped with engines and hydraulic pumps. The engine rotates, and the hydraulic pump sprays working oil, which drives the various actuators in the machine. The engine's rotational speed can be set to an appropriate level by the operator in the cab according to the workload.

[0003] Generally, the engine rotation speed is set via a dial-type input device as described in Patent Document 1. This dial-type input device predetermines the range of rotation the dial can take. For example, if the dial is rotated to its rightmost position, the engine rotation speed is at its maximum; conversely, if the dial is rotated to its leftmost position, the engine rotation speed is at its minimum. Furthermore, by setting the dial to a position between these extreme positions, any rotation speed between the maximum and minimum can be set based on that position. In such a dial-type input device, with the minimum / maximum dial position as a reference, the operator can intuitively set the engine rotation speed.

[0004] Existing technical documents

[0005] Patent documents

[0006] Patent Document 1: Japanese Patent Application Publication No. 2008-150965 Summary of the Invention

[0007] The problem that the invention aims to solve

[0008] However, in dial-type input devices, the minimum and maximum engine rotation speeds corresponding to the extreme positions of the dial are generally set according to the specifications of the engine mounted on the machine. Therefore, when the range of rotation (movable range) of the dial is set large, the change in engine rotation speed relative to the amount of rotation operation of the dial becomes smaller. Thus, fine adjustments to the engine rotation speed are possible, but in operations where there are many instances of significant increases or decreases in engine rotation speed, this may lead to reduced work efficiency and inconvenience for the operator.

[0009] On the other hand, when the range of rotation of the dial is reduced (the movable range), the change in engine speed relative to the amount of rotation of the dial becomes larger. Therefore, it is possible to quickly and significantly increase or decrease the engine speed, but it is not suitable for fine adjustments to the engine speed. In this case, it is difficult to set an appropriate engine speed corresponding to the work content, and therefore, it is impossible to optimize the operating state of the working machinery, which may lead to a deterioration in fuel economy.

[0010] Therefore, the purpose of this invention is to provide a working machine that can balance the large increase or decrease of engine rotation speed with the ease of fine adjustment.

[0011] Methods for solving problems

[0012] To address the aforementioned issues, the present invention provides a working machine comprising: a power unit for rotational drive; a working device that operates using the power unit as a power source; and an indicating device for indicating the increase and decrease of the rotational speed of the power unit. The working machine is characterized in that the indicating device comprises a first indicating device and a second indicating device, wherein the minimum change unit of the rotational speed of the power unit that can be indicated by the first indicating device is different from the minimum change unit of the rotational speed of the power unit that can be indicated by the second indicating device.

[0013] Invention Effects

[0014] According to the present invention, it is possible to balance the large increase or decrease in the rotational speed of the power unit with the ease of fine adjustment. Attached Figure Description

[0015] Figure 1 This is a diagram showing the appearance of a hydraulic excavator, an example of a work machine.

[0016] Figure 2 This is a diagram showing the situation inside the driver's cab.

[0017] Figure 3 This is a diagram showing the appearance of the engine control dial.

[0018] Figure 4 This is an example diagram showing the display screen of a touch monitor.

[0019] Figure 5 This is a diagram showing the positional relationship between the touch monitor and the engine control dial.

[0020] Figure 6 This is a diagram illustrating the system structure of this embodiment.

[0021] Figure 7 This is a diagram showing the processing flow in the change request value calculation department.

[0022] Figure 8 This is an example of the display screen on a touch monitor when the engine rotation speed changes.

[0023] Figure 9 This is an example of a touch monitor display when the engine rotation speed changes using the engine control dial.

[0024] Figure 10 These are other examples of the touch monitor display screen when the engine rotation speed is changed using the engine control dial. Detailed Implementation

[0025] Hereinafter, examples of work machinery using the present invention will be described with reference to embodiments of the present invention, using the accompanying drawings.

[0026] Figure 1 This diagram shows the general appearance of a hydraulic excavator 1, an example of an operating machine. The hydraulic excavator 1 comprises: a multi-joint type front-end machine 1A consisting of a boom 1a, a stick 1b, and a bucket 1c, all rotating vertically; and a body 1B consisting of an upper slewing body 1d and a lower traveling body 1e. The upper slewing body 1d is mounted on top of the lower traveling body 1e in a manner that allows it to rotate left and right. Furthermore, the upper slewing body 1d has a cab 1f.

[0027] The base end of the boom 1a of the front work machine 1A is supported on the front part of the upper slewing body 1d. The boom 1a, stick 1b, bucket 1c, upper slewing body 1d and lower traveling body 1e are driven by the actuators of the boom cylinder 2a, stick cylinder 2b, bucket cylinder 2c, rotary motor 3d and the left and right traveling motors 3e and 3f, respectively.

[0028] The upper rotating body 1d includes an engine 4, a pump 5, and an electronic control valve 6 for operating the hydraulic excavator 1. The pump 5 is driven by the rotation of the engine 4, spraying working oil to each actuator. The electronic control valve 6 operates according to the control levers 8a, 8b, 8c, and 8d located in the cab 1f (see reference). Figure 2 The operation input changes the flow rate and direction of the working oil, thereby controlling the operation of each actuator. The rotational speed of engine 4 (hereinafter referred to as engine rotational speed) is controlled by control device 7, and can be driven between a preset minimum rotational speed and a maximum rotational speed (hereinafter set to 800~2000 rpm). The higher the engine rotational speed, the greater the flow rate of working oil injected from pump 5, and the front working machine 1A can operate at a higher speed and with higher horsepower.

[0029] Figure 2This diagram shows the interior of the cab 1f. Electrical control levers 8a, 8b, 8c, and 8d are installed inside the cab 1f. Control levers 8a and 8b can be operated in four directions (forward, backward, left, and right), corresponding to the operation of the front workpiece 1A and the upper slewing body 1d (which actuates the boom cylinder 2a, stick cylinder 2b, bucket cylinder 2c, and swing motor 3d). Control levers 8c and 8d can be operated in two directions (forward and backward), corresponding to the operation of the left and right travel motors 3e and 3f mounted on the lower traveling body 1e.

[0030] An engine control dial 9 is located on the right front of the cab 1f, which allows for setting any engine rotation speed by rotating it. Figure 3 This diagram shows the appearance of the engine control dial 9. The engine control dial 9 is a rotary input device capable of infinite rotation; in this embodiment, each revolution has 24 operating steps. When the engine control dial 9 is rotated clockwise 301, the engine rotation speed increases according to the amount of rotation (number of steps); conversely, when the engine control dial 9 is rotated counterclockwise 302, the engine rotation speed decreases according to the amount of rotation (number of steps). In other words, the engine control dial 9 is a dial-type indicator device capable of indicating the increase and decrease of engine rotation speed through rotational operation.

[0031] In addition, a touch monitor 10 is installed in the cab 1f to confirm the operating status and set the operation of the hydraulic excavator 1. Figure 4 This is an example of the display screen of the touch monitor 10. The display screen of the touch monitor 10 shows icons 401, 402, 403 indicating the setting status of the hydraulic excavator 1, measuring instruments such as fuel level gauge 404 and water temperature gauge 405, camera image 406 (obtained by a camera or the like mounted on the vehicle body 1B) to assist the operator's vision, clock 407, etc.

[0032] Additionally, an instrument 408 displaying the engine rotation speed (800-2000 rpm) is shown at the bottom of the touch monitor 10 screen. Touch buttons 409 and 410 are provided for increasing or decreasing the engine rotation speed; these buttons can be pressed to adjust the speed. In other words, the touch buttons 409 and 410 displayed on the touch monitor 10 are touch-sensitive indicators that allow for the adjustment of engine rotation speed. Alternatively, the instrument 408 and touch buttons 409 and 410 may not be always displayed, but only when there is a change in engine rotation speed or when the operator performs an operation on the touch monitor 10.

[0033] Figure 5 This is a side view showing the positional relationship of each device. In this embodiment, the engine control dial 9 is positioned behind the operating lever 8b, and the touch monitor 10 (i.e., touch buttons 409, 410) is positioned above and in front of the operating lever 8b. That is, the operating lever 8b is positioned between the engine control dial 9 and the touch buttons 409, 410. Furthermore, the straight-line distance 502 between the grip portion 501 of the operating lever 8b and the engine control dial 9 is shorter than the straight-line distance 503 between the grip portion 501 of the operating lever 8b and the touch buttons 409, 410 (in other words, the engine control dial 9 is positioned closer to the operating lever 8b than the touch buttons 409, 410). When the operator is holding the operating lever 8b, the operation of the engine control dial 9 can be performed more easily than with the touch buttons 409, 410. Furthermore, as in this embodiment, when multiple operating devices (levers) are available, it is conceivable that the operation (holding) will be performed most frequently during the normal operation of the machine, and it is preferable to configure each device based on the representative operating device that is used when operating the engine control dial 9 and the touch monitor 10.

[0034] In addition, such as Figure 2 As shown, a closing lever 11 is located at the left front of the cab 1f. The operator can switch the closing lever 11 to either the locked position or the unlocked position depending on the work status. When the closing lever 11 is in the locked position, the electronic control valve 6 is controlled without the actuator operating, regardless of the operation of the operating levers 8a, 8b, 8c, and 8d.

[0035] Figure 6 This diagram illustrates the system structure of this embodiment. Each input / output device is connected to the control device 7, which performs various controls, including inputting and outputting information to the operator and issuing motion commands to the vehicle body. The control device 7 is configured to include a lever input determination unit 601, an action feasibility determination unit 602, a valve control unit 603, a dial input determination unit 604, a touch input determination unit 605, a change request value calculation unit 606, an engine control unit 607, and a display control unit 608. The processing flow of each processing unit will be described below.

[0036] In the lever input determination unit 601, the operation amount of the operating levers is determined based on the electrical signals output from each operating lever 8a, 8b, 8c, and 8d, and then output to the valve control unit 603. Additionally, the operation feasibility determination unit 602 detects the position (locked position or unlocked position) of the closing lever 11, and determines whether the vehicle body can move based on its state, outputting to the valve control unit 603 and the change request value calculation unit 606. When the vehicle body is in a state where it can move, the valve control unit 603 calculates and outputs control command values ​​for the electronic control valve 6 based on the operation amounts of the operating levers 8a, 8b, 8c, and 8d.

[0037] In the dial input determination unit 604, the operation of the engine control dial 9 is detected, and the operation information is output to the change request value calculation unit 606. The operation information includes the rotation direction (right or left) and the number of rotation steps of the engine control dial 9.

[0038] The touch input determination unit 605 determines whether there is a tapping operation on the touch buttons 409 and 410, and outputs the number of operations for each button to the change request value calculation unit 606. In addition, when the touch buttons 409 and 410 are pressed and held, a tapping operation can be determined and output at predetermined intervals.

[0039] In the change request value calculation unit 606, the change request value for the rotational speed of the engine 4 is calculated based on the operation content of the touch buttons 409, 410 and the engine control dial 9, and then output to the engine control unit 607. Figure 7 This is a diagram showing the processing flow in the change request value calculation unit 606.

[0040] First, in step 606a, operation information for touch buttons 409 and 410 and the engine control dial 9 is obtained. If the obtained operation information indicates a tapping operation on touch buttons 409 and 410, the process proceeds to step 606b, where the type of touch button operated by the tapping operation is determined.

[0041] In step 606b, if the touched button being tapped is touch button 409, which increases the engine rotation speed, the process proceeds to step 606c, where the change request value is calculated such that each tap increases the engine rotation speed by 50 rpm. If the acquired operation information includes multiple tapping operations, the minimum change request value (50 rpm) for each tap is multiplied by the number of operations to determine the magnitude of the increase in engine rotation speed.

[0042] On the other hand, in step 606b, if the type of touch button being tapped is touch button 410 that reduces the engine rotation speed, the process proceeds to step 606d, where the change requirement value is calculated such that each tap reduces the engine rotation speed by 50 rpm.

[0043] In step 606a, if the obtained operation information pertains to operation of the engine control dial 9, the process proceeds to step 606e, where the operation feasibility determination unit 602 determines the vehicle body's operational feasibility status. If the vehicle body is in an inoperable state, the process proceeds to step 606f, where the rotation direction of the dial operation is determined. If the dial operation rotation direction is right rotation 301, the process proceeds to step 606c, where a change request value is calculated by increasing the engine speed by 50 rpm for each step of rotation. Conversely, if the dial operation rotation direction is left rotation 302 in step 606f, the process proceeds to step 606d, where a change request value is calculated by decreasing the engine speed by 50 rpm for each step of rotation.

[0044] In step 606e, if the vehicle body is in a movable state, proceed to step 606g, where the rotation direction of the dial operation is determined in the same manner as in step 606f. If the rotation direction of the dial operation is a right rotation of 301, proceed to step 606h, where the change requirement value is calculated by increasing the engine speed by 200 rpm for each step of rotation.

[0045] At this time, you can also set a 200rpm threshold for the engine rotation speed (800 / 1000 / 1200 / 1400 / 1600 / 1800 / 2000). If the current engine rotation speed does not meet the threshold, the rotation operation equivalent to the first step in the dial operation is set to calculate the change requirement value in a way that makes the engine rotation speed rise from the current engine rotation speed to the threshold closest to the change direction.

[0046] In step 606g, if the rotation direction of the dial operation is left rotation 302, proceed to step 606i, which is the opposite of step 606h, and calculate the change request value by reducing the engine rotation speed by 200 rpm for each step of rotation.

[0047] In step 606j, the change requirement value of the engine rotation speed calculated in steps 606c, 606d, 606h, and 606i is output to the engine control unit 607, and the processing of the change requirement value calculation unit 606 ends.

[0048] In the engine control unit 607, the rotational speed of the engine 4 is determined based on the change request value calculated by the change request value calculation unit 606, and the engine 4 is controlled in a manner that satisfies this rotational speed. Furthermore, in addition to the change request value calculated by the change request value calculation unit 606, the engine rotational speed is also comprehensively determined based on the requirements of various functions installed on the hydraulic excavator, such as an automatic idle function that automatically reduces the engine rotational speed to a minimum rotational speed when there has been no operation of the control lever for a certain period of time.

[0049] The display control unit 608 obtains the current engine rotation speed from the engine control unit 607, and determines the instrument 408 based on the engine rotation speed. Figure 4 The number of segments is displayed on the touch monitor 10.

[0050] Hereinafter, examples of the behavior of this embodiment will be described. First, an example of changing the engine rotation speed using the touch monitor 10 will be described.

[0051] When the touch button 409, which increases the engine speed, displayed on the touch monitor 10, is pressed three times, the change request value calculation unit 606 processes the request in the order of steps 606a, 606b, and 606c to determine a change request value that increases the engine speed by 150 rpm. Alternatively, a change request value that increases the speed by 50 rpm three times can be output based on the pressing speed, the operating cycle of the control device, etc.

[0052] Figure 8 This is a graph showing the change in instrument panel 408 when the engine control unit 607 increases the engine speed by 150 rpm according to the changed value requirement. If the engine speed before the change was 1100 rpm, then the engine speed after the change increases to 1250 rpm, relative to... Figure 8 (A), such as Figure 8 As shown in (B), the three segments (50 rpm / segment) change to active colors, which confirms that the engine rotation speed increases.

[0053] When changing the engine speed by tapping, the speed can be adjusted in small increments of 50 rpm. This allows the operator to fine-tune the engine speed according to the task at hand, setting a suitable speed for the job, thus enabling efficient operation without excessive fuel consumption.

[0054] Furthermore, while this embodiment illustrates an example using a tapping operation, different types of touch operations can be used to set the engine rotation speed, similar to other sliding operations using a slider. Additionally, in this embodiment, the change in engine rotation speed based on the tapping operation is set to 50 rpm, but any value can be set depending on the characteristics of the machine being operated.

[0055] Next, an example of changing the engine rotation speed using the engine control dial 9 will be explained.

[0056] When the closing lever 11 is in the unlocked state and the hydraulic excavator 1 is in an operable state, when the engine control dial 9 is rotated to the right in three steps 301, the change request value calculation unit 606 processes the change request value in the order of steps 606a, 606e, 606g, and 606h to determine the change request value in a way that increases the engine rotation speed by 600 rpm.

[0057] Figure 9 This is a graph showing the change in instrument panel 408 when the engine control unit 607 increases the engine speed by 600 rpm according to the changed value requirement. Similar to the previous example, if the engine speed before the change was 1100 rpm, the engine speed after the change increases to 1700 rpm, relative to... Figure 9 (A), such as Figure 9 As described in (B), 12 segments (50 rpm / segment) change to active color.

[0058] Alternatively, it could be Instrument 408, such as Figure 9 As shown in (A) to (B), in addition to reflecting the changes in engine rotation speed together, the dial also reflects the changes in each step of the dial operation in turn, clearly indicating the changes in engine rotation speed corresponding to the dial operation.

[0059] Alternatively, as described above, the engine rotation speed can be set at 200 rpm intervals. If the current engine rotation speed does not meet this interval, the rotation operation in the input dial operation, which is equivalent to the first step, is set to increase the engine rotation speed from the current engine rotation speed to the nearest interval.

[0060] At this point, if we consider a scenario where the engine control dial 9 is rotated to the right in three steps (301), then in step 606h of the change request value calculation unit 606, the current engine rotation speed is obtained, and the change request value is calculated. If the current engine rotation speed is 1100 rpm, then the closest threshold is 1200 rpm. Therefore, in the first step of the three-step dial operation, the change request value is determined by increasing the engine rotation speed to 1200 rpm (an increase of 100 rpm).

[0061] Regarding the remaining two steps, according to the prescribed process, each step increases the engine speed by 200 rpm. Therefore, the change request value is determined by increasing the engine speed by a total of 400 rpm. Thus, the change request value calculation unit 606 outputs the change request value by increasing the engine speed by a total of 500 rpm. Figure 10 This indicates the changes in instrument 408 when these processes are performed. Figure 10 In (B), through the first step, the engine rotation speed increases to 1200 rpm (relative to (A), the two segments change to active colors), in Figure 10 In (C), through the remaining two processing steps, the engine rotation speed increases to 1600 rpm (relative to (B), with a further 8-segment change to active color). Here, for illustrative purposes, it is set up... Figure 10 (B), but it is also possible to do so without going through (B). Figure 10 (B) and from Figure 10 The transition from (A) to (C).

[0062] In this way, by changing the engine rotation speed along the dividing line of engine rotation speed, the operator can easily and intuitively understand the current engine rotation speed.

[0063] As described above, when the hydraulic excavator 1 is in an operational state, even when increasing from the minimum rotational speed (800 rpm) to the maximum rotational speed (2000 rpm), the rotation operation of the engine control dial 9 can be performed in up to 6 steps. Therefore, during operation, even when the engine rotational speed needs to be increased or decreased significantly in an instant, the engine rotational speed can be changed quickly.

[0064] Furthermore, when the closing lever 11 is in a locked state and the hydraulic excavator 1 is in a state where it cannot operate, the change request value calculation unit 606 determines that it will proceed from step 606e to step 606f.

[0065] Then, in step 606f, depending on the rotation direction of the dial operation, proceed to step 606c or step 606d to determine the change requirement value. The change requirement value is the same as the change in engine rotation speed based on the tapping operation, changing by 50 rpm for each step. That is, in this embodiment, when the hydraulic excavator 1 is in an inoperable state, the minimum change requirement value (initial change unit) for each step based on the dial operation is made consistent with the minimum change requirement value (minimum change unit) (50 rpm) for each tap based on the tapping operation.

[0066] As if the working machinery were in a non-operating state, without the need for a sudden and significant increase or decrease in engine rotation speed, compared to when the working machinery was in an operational state, fine adjustments to the engine rotation speed can be made by reducing the amount of change in engine rotation speed at each step (the minimum change unit) (in this embodiment, it is consistent with the amount of change in engine rotation speed at each tap (the minimum change unit)).

[0067] In this embodiment, the engine control dial 9 is positioned closer to the operating lever 8b than the touch monitor 10. Therefore, when the working machinery is in a non-operating state, the operator can make fine adjustments to the engine rotation speed through the engine control dial 9 without having to reach the touch monitor 10, thus enabling more efficient operation.

[0068] As explained above, in this embodiment, the two engine rotation speed setting devices (indicators) having an engine control dial 9 and a touch monitor 10 can improve work efficiency by setting differences in the smallest amount of variation of the engine rotation speed that can be set from each setting device (indicator). This balances the ease of large increases and decreases in engine rotation speed with the ease of fine adjustments.

[0069] [Summarize]

[0070] As described above, the working machine (hydraulic excavator 1) of this embodiment includes: a power unit (engine 4) that performs rotational drive; a working device (front work machine 1A, etc.) that operates using the power unit as a power source; and an indicating device that indicates the increase and decrease of the rotational speed of the power unit. The indicating device includes a first indicating device (engine control dial 9) and a second indicating device (touch buttons 409, 410 of touch monitor 10). The minimum change unit of the rotational speed of the power unit that can be indicated by the first indicating device (200 rpm) is different from the minimum change unit of the rotational speed of the power unit that can be indicated by the second indicating device (50 rpm).

[0071] Furthermore, the smallest unit of change of the rotational speed of the power unit that can be indicated by the first indicator (200 rpm) is larger than the smallest unit of change of the rotational speed of the power unit that can be indicated by the second indicator (50 rpm). The first indicator (engine control dial 9) is positioned closer to the operating device (operating levers 8a, 8b, 8c, 8d) for operating the work device (front work machine 1A, etc.) than the second indicator (touch buttons 409, 410 of touch monitor 10).

[0072] In addition, the first indicator (engine control dial 9) is a dial-type indicator that can indicate the rotational speed of the power unit by rotation operation, and the second indicator (touch buttons 409, 410 of touch monitor 10) is a touch-type indicator that can indicate the rotational speed of the power unit by touch operation.

[0073] Furthermore, when the working machinery is in an inoperable state, the minimum change unit of the rotational speed of the power unit that can be indicated by the first indicating device is consistent with the minimum change unit of the rotational speed of the power unit that can be indicated by the second indicating device.

[0074] In addition, the operating device is positioned between the first indicator device (engine control dial 9) and the second indicator device (touch buttons 409, 410 of touch monitor 10).

[0075] In addition, the first indicator (engine control dial 9) is located on the rear side of the operating device, and the second indicator (touch buttons 409, 410 of touch monitor 10) is located on the front side of the operating device.

[0076] The working machine (hydraulic excavator 1) of this embodiment has a first indicator and a second indicator for indicating the rotational speed of the power unit (engine 4). By setting the minimum change in rotational speed in each indicator to different values, the appropriate indicator can be operated in cases of large increases or decreases in the rotational speed of the power unit and in cases of fine adjustments, thereby efficiently setting the target rotational speed.

[0077] In addition, by placing the first indicator with the largest minimum change value closer to the operating device than the second indicator, the rotational speed of the power unit can be quickly set during the operation of the machinery, even when the rotational speed of the power unit needs to be increased or decreased rapidly in an instant.

[0078] Furthermore, by setting the first and second indicator devices as indicator devices with different input methods, and setting the first indicator device with the largest minimum change as a dial-type indicator device capable of rotational operation, the rotational speed of the power device can be set quickly and without hesitation, even when the rotational speed of the power device needs to be increased or decreased rapidly in an instant.

[0079] Furthermore, when the working machinery is in a state of immobility, by reducing the minimum change in the rotational speed in the first indicator device, in non-working situations where the possibility of instantaneous increase or decrease in the rotational speed of the power unit is low, the rotational speed of the power unit can be changed solely through the first indicator device, which also includes fine adjustments. Therefore, the work can be carried out more efficiently.

[0080] As described above, according to this embodiment, by taking into account both the large increase or decrease in the rotational speed of the power unit and the ease of fine adjustment, it is possible to make it easy to set the rotational speed of the power unit suitable for operation, thereby improving work efficiency.

[0081] The various structures, functions, and execution processes related to the aforementioned control device 7 can also be partially or entirely implemented in hardware (e.g., through integrated circuit design of logic to execute each function). Alternatively, the structures related to the aforementioned control device 7 can also be implemented by a program (software) that reads / executes the functions related to the structure of the control device by a processing unit (e.g., a CPU). Information related to this program can be stored, for example, in semiconductor memory (flash memory, SSD, etc.), magnetic storage devices (hard disk drives, etc.), and recording media (disk, optical disk, etc.).

[0082] Furthermore, in the above description of the embodiments, control lines and information lines are understood to be necessary for the description of these embodiments, but do not necessarily represent all control lines and information lines related to the product. In fact, it can be considered that almost all structures are interconnected.

[0083] Symbol Explanation

[0084] 1. Hydraulic excavator (operating machinery);

[0085] 1A Front-end machine;

[0086] 1B Body;

[0087] 1a Boom;

[0088] 1b. Fighting pole;

[0089] 1c Bucket;

[0090] 1d Upper rotating body;

[0091] 1e Lower driving body;

[0092] 1f Driver's cab;

[0093] 4. Engine (power unit);

[0094] 5 pumps;

[0095] 6. Electronic control valve;

[0096] 7. Control device;

[0097] 8a, 8b, 8c, 8d Operating levers (operating devices);

[0098] 9. Engine control dial (first indicator);

[0099] 10. Touch monitor;

[0100] 11. Closing lever;

[0101] 408 Instruments;

[0102] 409, 410 Touch buttons (second indicator device);

[0103] 601 lever input determination unit;

[0104] 602 Action Determination Section;

[0105] 603 Valve Control Unit;

[0106] 604 Dial Input Determination Unit;

[0107] 605 Touch Input Detection Unit;

[0108] 606 Change Requirement Value Calculation Department;

[0109] 607 Engine Control Unit;

[0110] 608 Display Control Unit.

Claims

1. A type of operating machinery, comprising: A power unit that drives rotation; The working device, which operates using the power device as its power source; and An indicating device that indicates the increase and decrease of the rotational speed of the power unit. Its features are, The indicating device has a first indicating device and a second indicating device. The minimum change unit of the rotational speed of the power unit that can be indicated by the first indicating device is different from the minimum change unit of the rotational speed of the power unit that can be indicated by the second indicating device.

2. The operating machinery according to claim 1, characterized in that, The smallest unit of change of the rotational speed of the power unit that can be indicated by the first indicating device is larger than the smallest unit of change of the rotational speed of the power unit that can be indicated by the second indicating device. The first indicator is positioned closer to the operating device for operating the work device than the second indicator.

3. The operating machinery according to claim 2, characterized in that, The first indicating device is a dial-type indicating device that can indicate the rotational speed of the power unit through rotational operation. The second indicator is a touch-sensitive indicator that allows for indication of the rotational speed of the power unit via touch operation.

4. The operating machinery according to claim 1, characterized in that, When the working machinery is in a state of inoperability, the minimum change unit of the rotational speed of the power unit that can be indicated by the first indicating device is consistent with the minimum change unit of the rotational speed of the power unit that can be indicated by the second indicating device.

5. The operating machinery according to claim 2, characterized in that, The operating device is positioned between the first indicating device and the second indicating device.

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