JP2024094009A - Excavator - Google Patents

Abstract

To provide a shovel that allows an operator to easily recognize the current output level of a drive source.
[Solution] The shovel 100 comprises a lower running body 1, an upper rotating body 3 rotatably mounted on the lower running body 1, a drive source 11 mounted on the upper rotating body 3, and a display device 40 mounted on the upper rotating body 3, and the display device 40 displays arc-shaped gauges G1 to G10 to indicate the output level of the drive source.
[Selected figure] Figure 3

Description

This disclosure relates to a shovel.

The shovel is equipped with a drive source such as a diesel engine. The operator of the shovel can change the output level of the drive source by operating the control unit (see, for example, Patent Document 1).

International Publication No. 2019/189399

There are cases where it is difficult for an operator to recognize the current output level of the drive source. The present disclosure aims to provide an excavator that allows an operator to easily recognize the current output level of the drive source.

The excavator according to one aspect of the present disclosure includes a lower running body, an upper rotating body rotatably mounted on the lower running body, a drive source mounted on the upper rotating body, and a display device mounted on the upper rotating body, and the display device displays an arc-shaped gauge to indicate the output level of the drive source.

This disclosure can provide a shovel that allows the operator to easily recognize the current output level of the drive source.

FIG. 2 is a side view of a shovel according to one embodiment. FIG. 2 is a block diagram showing a basic system mounted on the excavator shown in FIG. 1 . FIG. 4 is a diagram showing an example of a screen displayed on the display device during normal operation. FIG. 13 is a diagram showing an example of a screen displayed on the display device, in which an ECO mode is set; FIG. 4 is an enlarged view of a rotation speed mode display area. FIG. 13 is a diagram showing an example of a screen displayed on the display device, and is a diagram showing an example of a screen displayed when engine output is reduced. 10 is a flowchart showing a processing procedure for changing a screen displayed on a display device. FIG. 13 is a diagram showing an example of a screen displayed on the display device, in which a gauge showing an engine output level is arranged at the bottom. FIG. 11 is a diagram showing an example of a screen displayed on a display device, and is a diagram showing an output level of a motor.

Below, a description of the embodiment of the invention will be given with reference to the drawings. In each drawing, the same components are given the same reference numerals, and duplicated explanations may be omitted.

With reference to Figures 1 and 2, a shovel 100 as an excavator according to an embodiment will be described. Figure 1 is a side view of the shovel 100 according to one embodiment. Figure 2 is a block diagram showing the basic system mounted on the shovel 100 shown in Figure 1.

The excavator 100 shown in FIG. 1 comprises a lower traveling body 1, an upper rotating body 3, and an attachment AT. The excavator 100 has the upper rotating body 3 rotatably mounted on the crawler-type lower traveling body 1 via a rotating mechanism 2. A boom 4 is attached to the upper rotating body 3 as a working element. An arm 5 is attached to the tip of the boom 4 as a working element, and a bucket 6 is attached to the tip of the arm 5 as a working element and end attachment. The boom 4 is driven by a boom cylinder 7, the arm 5 is driven by an arm cylinder 8, and the bucket 6 is driven by a bucket cylinder 9.

The upper rotating body 3 is provided with a cabin 10 as a driver's cab, and is equipped with a drive source such as an engine 11. The upper rotating body 3 is also equipped with a hydraulic swing motor, a controller 30, an imaging device 80, etc. The hydraulic swing motor may be a swing motor generator.

The driving source is not limited to an engine, but may be a motor. The shovel 100 may be equipped with an engine and a motor as a driving source. The shovel 100 may be driven only by an engine, may be a hybrid type driven by an engine and a motor, or may be an electric shovel (electrical work machine) driven only by a motor.

Inside the cabin 10, an operating device 26, a display device 40, etc. are provided. For convenience, in this specification, the side of the upper rotating body 3 to which the working elements such as the boom 4 are attached is referred to as the front, and the side to which the counterweight is attached is referred to as the rear.

The controller 30 is configured to be able to control the excavator 100. The controller 30 is configured as a computer equipped with a CPU, RAM, NVRAM, ROM, etc. In this case, the controller 30 reads out a program corresponding to each functional element from the ROM and loads it into the RAM, and causes the CPU to execute the corresponding process. However, each functional element may be configured as hardware, or as a combination of software and hardware.

The imaging device 80 is configured to capture images of the surroundings of the excavator 100. The imaging device 80 is, for example, a monocular camera, a stereo camera, a distance imaging camera, an infrared camera, a LiDAR, or the like. The imaging device 80 includes a rear camera 80B attached to the rear end of the upper surface of the upper rotating body 3, a left camera 80L attached to the left end of the upper surface of the upper rotating body 3, and a right camera 80R attached to the right end of the upper surface of the upper rotating body 3.

The rear camera 80B, left camera 80L, and right camera 80R are all attached to the upper rotating body 3 so that their optical axes face diagonally downward and so that a portion of the upper rotating body 3 is included in the imaging range. Therefore, the imaging range of each of the rear camera 80B, left camera 80L, and right camera 80R has a viewing angle of, for example, about 180 degrees when viewed from above.

Next, the basic system installed in the shovel 100 will be described with reference to FIG. 2. FIG. 2 is a block diagram showing the basic system installed in the shovel shown in FIG. 1. In FIG. 2, mechanical power transmission lines are indicated by double lines, hydraulic oil lines by thick solid lines, pilot lines by dashed lines, power lines by thin solid lines, and electrical control lines by dashed lines.

The basic system shown in FIG. 3 includes an engine 11, a main pump 14, a pilot pump 15, a control valve 17, an operating device 26, an operating pressure sensor 29, a controller 30, a switching valve 35, a display device 40, a dial 32, etc. The basic system also includes a storage battery 70 and an engine control unit (ECU 74).

Engine 11 is a diesel engine that employs isochronous control to maintain a constant engine speed regardless of load changes. ECU 74 controls the fuel injection amount, fuel injection timing, boost pressure, etc., of engine 11.

The engine 11 is connected to a main pump 14 and a pilot pump 15, which serve as hydraulic pumps. The main pump 14 is connected to a control valve 17 via a hydraulic oil line.

The control valve 17 is a hydraulic control device that controls the hydraulic system of the excavator 100. The control valve 17 is connected to hydraulic actuators such as the left traveling hydraulic motor, the right traveling hydraulic motor, the boom cylinder 7, the arm cylinder 8, the bucket cylinder 9, and the swing hydraulic motor.

The control valve 17 includes multiple spool valves corresponding to each hydraulic actuator. Each spool valve can increase or decrease the opening area of the PC port and the opening area of the CT port. Each spool valve can be displaced according to the pilot pressure. The PC port is a port that connects the main pump 14 to the hydraulic actuator. The CT port is a port that connects the hydraulic actuator to the hydraulic oil tank.

The pilot pump 15 is connected to the operating device 26 via a pilot line. The operating device 26 includes, for example, a left operating lever, a right operating lever, and a travel operating device. The travel operating device includes, for example, a travel lever and a travel pedal. Each of the operating devices 26 is a hydraulic operating device and is connected to the pilot port of a corresponding spool valve in the control valve 17 via a pilot line. However, the operating device 26 may be an electric operating device.

The operating pressure sensor 29 detects the operation of the operating device 26 as pressure. The operating pressure sensor 29 outputs the detected value to the controller 30. The operation of the operating device 26 may be detected electrically.

The switching valve 35 can switch between an enabled state and an disabled state of the operating device 26. The enabled state of the operating device 26 is a state in which the operator can use the operating device 26 to operate the hydraulic actuator. The disabled state of the operating device 26 is a state in which the operator cannot use the operating device 26 to operate the hydraulic actuator.

The switching valve 35 is a gate lock valve that operates in response to a command from the controller 30. The switching valve 35 is disposed in the pilot line that connects the pilot pump 15 and the operating device 26, and is configured to be able to switch between blocking and connecting the pilot line in response to a command from the controller 30. The operating device 26 is enabled, for example, when the gate lock lever D4 is pulled up and the switching valve 35 (gate lock valve) is opened, and disabled, when the gate lock lever D4 is pushed down and the switching valve 35 (gate lock valve) is closed.

The display device 40 displays various information. The display device 40 may be connected to the controller 30 via a communication network such as a CAN, or may be connected to the controller 30 via a dedicated line. The display device 40 can display one or more captured images captured by the imaging device 80 and a menu screen. The display device 40 operates by receiving power from the storage battery 70. The display device 40 has a control unit 40a and an image display unit 41.

The control unit 40a controls the images displayed on the image display unit 41. The control unit 40a is configured as a computer equipped with a CPU, RAM, NVRAM, ROM, etc. In this case, the control unit 40a reads out a program corresponding to each functional element from the ROM and loads it into the RAM, and causes the CPU to execute the corresponding process. However, each functional element may be configured as hardware, or as a combination of software and hardware. In addition, the image displayed on the image display unit 41 may be controlled by the controller 30 or the imaging device 80.

The image display unit 41 displays the captured image captured by at least one of the imaging devices 80. The image display unit 41 can display other information in addition to the captured image. The captured image may be, for example, any one of a rear image captured by the rear camera 80B, a left image captured by the left camera 80L, and a right image captured by the right camera 80R. The captured image may be, for example, an overhead image synthesized from captured images captured by the rear camera 80B, the left camera 80L, and the right camera 80R. The captured image may be two or more images selected from a rear image, a left image, a right image, and an overhead image.

The image display unit 41 can display the menu screen M1. An example of the menu screen M1 is shown in Figs. 4 and 5. The menu screen M1 includes a status screen showing the status of the shovel 100 and a setting screen showing various settings of the shovel 100. The image display unit 41 is a touch panel that can be operated by touch. The image display unit 41 can display an input screen and button images operated by the operator. The image display unit 41 can display the menu screen M1 when a specified operation is performed.

The image display unit 41 may display the menu screen M1 whether the shovel 100 is in an operable state or an inoperable state. The image display unit 41 may be configured to display the menu screen M1 when the menu switch is operated only when the shovel 100 is in an inoperable state. These may also be configured to be switchable by a switching means such as a changeover switch. The state in which the shovel 100 is in operable means, for example, a state in which the gate lock lever D4 is pulled up and the changeover valve 35 is opened, thereby enabling the operation device 26. The state in which the shovel 100 is inoperable means, for example, a state in which the gate lock lever D4 is pushed down and the changeover valve 35 is closed, thereby enabling the operation device 26.

The basic system includes an alternator 11a and a starter 11b. The storage battery 70 is charged, for example, with electricity generated by the alternator 11a. The power of the storage battery 70 is also supplied to the controller 30, etc. For example, the starter 11b of the engine 11 is driven by the power from the storage battery 70 to start the engine 11.

The ECU 74 transmits data on the state of the engine 11, such as the cooling water temperature, to the controller 30. The regulator 14a of the main pump 14 transmits data on the swash plate tilt angle to the controller 30. The discharge pressure sensor 14b transmits data on the discharge pressure of the main pump 14 to the controller 30. The oil temperature sensor 14c, which is provided in the line between the hydraulic oil tank and the main pump 14, transmits data on the temperature of the hydraulic oil flowing through that line to the controller 30. The operating pressure sensor 29 transmits data on the pilot pressure generated when the operating device 26 is operated to the controller 30. The controller 30 stores these data in a temporary storage unit (memory) and can transmit them to the display device 40 when necessary.

Dial 32 is a dial for changing the rotation speed of engine 11. Dial 32 transmits data regarding the rotation angle of dial 32 to controller 30. Dial 32 is rotatable around a predetermined axis. Dial 32 is rotatable 360 degrees or more, and is rotatable infinitely. Dial 32 is an example of a dial-type operating unit that is rotatable infinitely.

"Infinitely rotatable" means that the maximum rotation angle is less than 360 degrees, and does not include a limited rotation range. The operator can increase the RPM of the engine 11 by rotating the dial 32, for example, clockwise. The operator can decrease the RPM of the engine 11 by rotating the dial 32, for example, counterclockwise. The rotational position of the dial 32 can be detected by an encoder. The controller 30 can change the output of the engine 11 according to the rotational position of the dial 32.

Next, the operation modes of the shovel 100 will be described. The shovel 100 can execute a plurality of operation modes. The controller 30 controls the engine 11 via the ECU 74. The controller 30 can control the output of the engine 11 according to the operation mode.

The excavator 100 can execute, for example, a normal operation mode, an ECO mode, a crane mode, an MC-MG mode, and a payload mode. The excavator 100 may execute other operation modes. The normal operation mode is, for example, a general operation mode, and is an operation mode suitable for excavation work under normal circumstances. The ECO mode is an operation mode that can reduce fuel consumption in the engine 11 more than the normal operation mode. The crane mode is an operation mode suitable for crane work in the excavator 100.

The operation modes include engine speed modes. The excavator 100 can execute engine speed modes, for example, P1 mode, P2 mode, and P3 mode. P4 mode, P5 mode, P6 mode, P7 mode, P8 mode, P9 mode, P10 mode, and SP mode. The engine 11 has different speeds in the P1 to P10 modes and the SP mode. In the excavator 100, the engine 11 has a maximum speed in the SP mode, and the engine 11 has a maximum output. In the P1 mode, the engine 11 has the lowest speed, and in the P2 to P10 modes, the engine 11 has an increased speed. The excavator 100 can execute, for example, 11 different stages of engine output.

In the excavator 100, the engine speed mode can be changed by rotating the dial 32 to select P1 to P10 modes and SP mode. In the excavator 100, the engine 11 speed is set according to each operating mode. The operator can change the engine 11 speed by rotating the dial 32.

Next, an example of a screen displayed on the display device 40 will be described with reference to FIG. 3. FIG. 3 shows an example of a screen displayed on the display device 40 during normal operation.

The image display section 41 of the display device 40 includes an upper display area 41A, a main display area 41B, and a lower display area 41C. The upper display area 41A is disposed in an upper part of the image display section 41. The lower display area 41C is disposed in a lower part of the image display section 41. The main display area 41B is disposed in the center of the image display section 41. The main display area 41B is disposed between the upper display area 41A and the lower display area 41C. The area of the main display area 41B is, for example, larger than the combined area of the upper display area 41A and the lower display area 41C.

The upper display area 41A includes a date and time display area 41a, an operating mode display area 41b, an attachment display area 41c, an engine control status display area 41e, a coolant temperature display area 41g, a remaining fuel amount display area 41h, a remaining urea water amount display area 41j, and a hydraulic oil temperature display area 41k.

The main display area 41B includes an image display area 41n. The image display area 41n includes an overhead image display area 41n1, a rear image display area 41n2, and a right side image display area 41n3. These image display areas 41n1 to 41n3 occupy most of the image display section 41. The image display areas 41n1 to 41n3 are arranged below the display areas 41a, 41b, 41g, 41h, and 41j.

The lower display area 41C includes an engine operating time display area 41f, an air conditioner operating status display area 41m, and a menu display area 41p.

The date and time display area 41a is an area that displays the current date and time. The driving mode display area 41b is an area that displays the current driving mode. The attachment display area 41c is an area that displays an image that represents the currently attached attachment.

The engine control status display area 41e is an area that displays the control status of the engine 11. The engine operating time display area 41f is an area that displays the cumulative operating time of the engine 11. The coolant temperature display area 41g is an area that displays the current temperature state of the engine coolant. The remaining fuel amount display area 41h is an area that displays the remaining amount of fuel stored in the fuel tank. The remaining urea water amount display area 41j is an area that displays the remaining amount of urea water stored in the urea water tank as an image. The hydraulic oil temperature display area 41k is an area that displays the temperature state of the hydraulic oil in the hydraulic oil tank.

The air conditioner operation status display area 41m includes an air outlet display area 41m1 that displays the current air outlet position, an operation mode display area 41m2 that displays the current operation mode, a temperature display area 41m3 that displays the current set temperature, and an air volume display area 41m4 that displays the current set air volume.

The image display area 41n is an area that displays the image captured by the imaging device 80. The image display area 41n displays the overhead image FV, the rear image CBT, and the right side image RV. The overhead image FV is a virtual viewpoint image generated by the control unit 40a, and is generated based on images captured by the rear camera 80B, the left camera 80L, and the right camera 80R. In addition, a shovel figure GE corresponding to the shovel 100 is placed in the center of the overhead image FV. This is to allow the operator to more intuitively grasp the positional relationship between the shovel 100 and objects present around the shovel 100.

The rear image CBT is an image that shows the space behind the excavator 100. The rear image CBT is a real viewpoint image generated by the control unit 40a, and is generated based on an image captured by the rear camera 80B.

The right side image RV is an image that shows the space to the right of the excavator 100. The right side image RV is a real viewpoint image generated by the control unit 40a, and is generated based on an image captured by the right camera 80R.

The display device 40 displays an overhead image FV in the overhead image display area 41n1, a rear image CBT in the rear image display area 41n2, and a right side image RV in the right side image display area 41n3.

The rotation speed mode display area 41i is an area that displays information related to the engine rotation speed mode. The rotation speed mode display area 41i includes a first rotation speed mode display area 41i1 that displays the current engine rotation speed mode in text, a second rotation speed mode display area 41i2 that displays the total number of rotation speed modes using gauges G1 to G10, and an engine graphic display area 41i3 that displays an engine icon 11d, which is a graphic that resembles the engine 11. Details will be described later.

The first rotation speed mode display area 41i1 is located in the upper part of the image display unit 41. The first rotation speed mode display area 41i1 is located in the center in the width direction of the image display unit 41.

Next, the operation unit 42 will be described. As shown in FIG. 3, the operation unit 42 is composed of one or more button-type switches that allow the operator to select tabs 41p1 to 41p7, input settings, etc. In the example of FIG. 3, the operation unit 42 includes seven switches 42a1 to 42a7 arranged in the upper row and seven switches 42b1 to 42b7 arranged in the lower row. The switches 42b1 to 42b7 are arranged below the switches 42a1 to 42a7, respectively. However, the number, form, and arrangement of the switches of the operation unit 42 are not limited to the above example, and may be, for example, a form in which the functions of multiple button-type switches are combined into one by a jog wheel, jog switch, etc., or the operation unit 42 may be separate from the display device 40. In addition, the tabs 41p1 to 41p7 may be directly operated using a touch panel in which the image display unit 41 and the operation unit 42 are integrated. Note that FIG. 2 illustrates a display device 40 that has a touch panel type image display unit 41 and does not have an operation unit 42.

Switches 42a1 to 42a7 are arranged below tabs 41p1 to 41p7 in correspondence with tabs 41p1 to 41p7, respectively, and function as switches for selecting tabs 41p1 to 41p7. Because switches 42a1 to 42a7 are arranged below tabs 41p1 to 41p7 in correspondence with tabs 41p1 to 41p7, respectively, the operator can intuitively select tabs 41p1 to 41p7.

The switch 42b1 is a switch that switches the captured image displayed in the image display area 41n. Each time the switch 42b1 is operated, the captured image displayed in the first image display area 41n1 of the image display area 41n is switched between, for example, a rear image, a left image, a right image, and an overhead image. Also, each time the switch 42b1 is operated, the captured image displayed in the second image display area 41n2 of the image display area 41n may be switched between, for example, a rear image, a left image, a right image, and an overhead image. Also, each time the switch 42b1 is operated, the captured image displayed in the first image display area 41n1 of the image display area 41n and the captured image displayed in the second image display area 41n2 may be switched. In this way, the switch 42b1 as the operation unit 42 may switch the screen displayed in the first image display area 41n1 or the second image display area 41n2, or may switch the screen displayed in the first image display area 41n1 and the second image display area 41n2. Also, a separate switch may be provided for switching the screen displayed in the second image display area 41n2.

Switches 42b2 and 42b3 are switches that adjust the air volume of the air conditioner. In the example of FIG. 5, the air volume of the air conditioner is reduced when switch 42b2 is operated, and is increased when switch 42b3 is operated.

Switch 42b4 is a switch that switches the cooling and heating functions ON and OFF. In the example of FIG. 5, switch 42b4 is configured to switch the cooling and heating functions ON and OFF each time it is operated.

Switches 42b5 and 42b6 are switches that adjust the set temperature of the air conditioner. In the example of FIG. 5, the set temperature is lowered when switch 42b5 is operated, and is configured to be raised when switch 42b6 is operated.

Switch 42b7 is a switch that can change the display of the engine operating time display area 41f.

In addition, switches 42a2 to 42a6 and 42b2 to 42b6 are configured to allow the input of numbers displayed on or near each switch. In addition, switches 42a3, 42a4, 42a5, and 42b4 are configured to allow the cursor to be moved left, up, right, and down, respectively, when the cursor is displayed on the menu screen.

Note that the functions provided to the switches 42a1 to 42a7 and 42b1 to 42b7 are merely examples, and the switches may be configured to execute other functions. Also, illustration of the operation unit 42 is omitted in Figures 4 and 6.

Next, an example of a screen displayed on the display device 40 in ECO mode will be described with reference to Figures 4 and 5. Figure 4 shows an example of a screen displayed on the display device 40, and is a diagram showing an example of a screen when ECO mode is set. Figure 4 shows a case where the menu screen M1 is displayed in ECO mode. Figure 5 is an enlarged view of the rotation speed mode display area 41i. Figure 5 shows the rotation speed mode first display area 41i1 in ECO mode.

The screen in ECO mode differs from the screen in normal driving mode in that some of the displays in the RPM mode display area 41i are different. The RPM mode display area 41i includes a first RPM mode display area 41i1, a second RPM mode display area 41i2, an engine graphic display area 41i3, a driving mode display area 41i4, an output reduction display area 41i5, and a text information display area 41i6.

The first rotation speed mode display area 41i1 is a display area that displays the current rotation speed mode of the engine 11 in text. As described above, the rotation modes are P1 mode, P2 mode, and P3 mode. P4 mode, P5 mode, P6 mode, P7 mode, P8 mode, P9 mode, P10 mode, and SP mode can be executed. These modes include P1 to P10 and SP mode.

When the current engine 11 rotation speed mode is "P1 mode", the number "1" is displayed in the rotation speed mode first display area 41i1. When the current engine 11 rotation speed mode is "P2 mode", the number "2" is displayed in the rotation speed mode first display area 41i1. Similarly, when the current engine 11 rotation speed mode is "Pn mode", the number "n" is displayed in the rotation speed mode first display area 41i1. Here, "n" is a natural number ranging from "1" to "10".

In addition, when the current rotation speed mode of the engine 11 is "SP mode", the characters "SP" are displayed in the first rotation speed mode display area 41i1. Note that the characters displayed in the first rotation speed mode display area 41i1 are not limited to these.

The first rotation speed mode display area 41i1 may display Roman numerals, Chinese numerals, pictograms that resemble numbers, or other characters to indicate the rotation speed mode.

The first rotation speed mode display area 41i1 is formed in the center of the rotation speed mode display area 41i. The first rotation speed mode display area 41i1 is formed inside the engine graphic display area 41i3. The first rotation speed mode display area 41i1 is not limited to being formed inside the engine graphic display area 41i3, and may be formed next to the engine graphic display area 41i3.

The second rotation speed mode display area 41i2 is an area that displays the total number of rotation speed modes of the engine 11 and the current rotation speed mode using multiple gauges G1 to G10. The number of rotation speed modes of the engine 11 is, for example, "10." In the excavator 100, 10 stages of rotation speed modes of the engine 11 can be selected.

The multiple gauges G1 to G10 are arranged in an arc. The multiple gauges G1 to G10 are arranged along an arc centered on the RPM mode first display area 41i1. The multiple gauges G1 to G10 may be arranged along the circumference of a circle. The multiple gauges G1 to G10 may be arranged along a portion of the circumference of a circle. Displaying gauges in an arc shape includes the case where multiple gauges are arranged in an arc shape, and the shape of each gauge may be rectangular or another shape. Displaying gauges in an arc shape includes the case where an arc-shaped gauge is displayed, in which case the shape of the gauge follows the arc.

The display device 40 displays arc-shaped gauges G1 to G10 to display the power level of the engine 11. The display device 40 can display the current power level of the engine 11, for example, by changing the number of gauges G1 to G10 that are lit. The display device 40 displays the current power level of the engine 11 by changing the total length of the gauges G1 to G10 that are lit.

For example, starting from the bottom left, gauges G1 to G2 are lined up in a clockwise direction. Gauges G1 to G3 are located on the left side of the RPM mode first display area 41i1. Gauges G4 to G7 are located above the RPM mode first display area 41i1. Gauges G8 to G10 are located on the right side of the RPM mode first display area 41i1.

The multiple gauges are arranged in the order G1 to G10. If the total number of rotation speed modes is "10", the number of multiple gauges G1 to G10 shall be "10". If the total number of rotation speed modes is "n", the number of multiple gauges may be "n-1". Here, "n" is a natural number.

When the rotation speed mode is P1 mode, P2 mode, P3 mode, P4 mode, P5 mode, P6 mode, P7 mode, P8 mode, P9 mode, or P10 mode, the number of multiple gauges G1 to G10 is "10". When the rotation speed mode is P1 mode, P2 mode, P3 mode, P4 mode, P5 mode, P6 mode, P7 mode, P8 mode, P9 mode, P10 mode, or SP mode, the number of multiple gauges may be "10" or "11".

For example, when the current RPM mode is "P1 mode", the display device 40 lights only the gauge G1. When the current RPM mode is "P2 mode", the display device 40 lights the gauges G1 and G2. Similarly, when the current RPM mode is "Pn mode", the display device 40 lights the gauges G1 to Gn. Furthermore, when the current RPM mode is "SP mode", the display device 40 may light all of the gauges G1 to G10.

Note that if the total number of rotation speed modes is "n", the number of gauges may be "n" or "n-1".

The shape of the gauges G1 to G10 may be, for example, a trapezoid or a sector. The shape of the gauges G1 to G100 may be other shapes, such as a circle, a rectangle, or other shapes.

The engine graphic display area 41i3 is a display area in which an engine icon 11d, which is a graphic that imitates the engine 11, is displayed. The engine icon 11d has a shape that roughly follows the external shape of the engine 11 when viewed in a direction along the rotation axis of the engine 11, for example. The engine icon 11d includes a shape that allows the operator to imagine the engine 11. The engine icon 11d is an example of a drive source icon that imitates the shape of a drive source. The display device 40 displays the output level of the engine 11 inside the engine icon 11d. In the display device 40, a rotation speed mode first display area 41i1 is arranged inside the engine icon 11d. The display device 40 displays numbers or letters indicating the rotation speed mode of the engine 11 inside the engine icon 11d.

The driving mode display area 41i4 is a display area that displays the current driving mode using a graphic. For example, if the current driving mode is "ECO mode", a graphic resembling a leaf, which represents the environment, is displayed. Note that the graphic representing "ECO mode" is not limited to a leaf, and may be, for example, a plant, an animal, or something related to nature. The leaf is an example of a driving mode icon that indicates the driving mode of the drive source.

The driving mode display area 41i4 is formed next to the engine graphic display area 41i3. The driving mode display area 41i4 is formed between the first rotation speed mode display area 41i1 and the second rotation speed mode display area 41i2. The driving mode display area 41i4 may display, for example, a driving mode icon that is a graphic indicating "ECO mode" near the gauges G1 and G2. This makes it possible to display a graphic indicating "ECO mode" near the gauges G1 and G2 that indicate "P1 mode" and "P2 mode" in which the engine 11 rotation speed is low. "Near the gauge" means, for example, next to the gauge.

When the current driving mode is the normal driving mode, the driving mode display area 41i4 may display a graphic indicating that the driving mode is the normal driving mode, or it may display nothing.

The output down display area 41i5 is a display area that uses a graphic showing an arrow to indicate that the output of the engine 11 is being reduced. The output down display area 41i5 can, for example, display a downward arrow to indicate that the output of the engine 11 is being reduced.

The output down display area 41i5 is formed next to the engine graphic display area 41i3. The output down display area 41i5 is arranged on the opposite side of the engine graphic display area 41i3 from the operation mode display area 41i4. The output down display area 41i5 is formed between the first rotation speed mode display area 41i1 and the second rotation speed mode display area 41i2. The output down display area 41i5 may be arranged near the gauges G9 and G10.

The text information display area 41i6 is an area that displays text information related to the state of the engine 11. The text information display area 41i6 is formed, for example, below the RPM mode second display area 41i2. The text information display area 41i6 is disposed between the gauge G1 and the gauge G10.

The rotation speed mode display area 41i can change the display color depending on the rotation speed mode. For example, when the rotation speed of the engine 11 is high in "P9 mode," "P10 mode," or "SP mode," the rotation speed mode second display area 41i2 may change the color of the multiple gauges G1 to G10. For example, in "P1 mode" to "P8 mode," the multiple gauges G1 to G8 can be displayed in green, and in "P9 mode," "P10 mode," or "SP mode," the multiple gauges G1 to G10 can be displayed in blue.

The display device 40 may change the display color in other display areas depending on the driving mode. The display device 40 can change and display the colors of the gauges G1 to G10 depending on the driving mode or the output of the engine 11.

Next, the menu screen M1 will be described with reference to FIG. 4. The image display unit 41 can display the menu screen M1 in response to, for example, a predetermined operation input. The image display unit 41 can display the menu screen M1 when, for example, the rotation speed mode display area 41i is tapped. The main display area 41B includes a menu screen display area 41o that displays the menu screen M1. The menu screen M1 is an example of a detailed display related to the drive source. The detailed display related to the drive source includes a menu screen M1 for changing the settings of the drive source.

The menu screen display area 41o is, for example, disposed below the image display area 41n. The menu screen display area 41o may be disposed between the image display area 41n and the lower display area 41C. The lower display area 41C is shown in FIG. 3.

The menu screen display area 41o includes an operation mode display area 41o1, an operation mode ON/OFF display area 41o2, an automatic stop display area 41o3, an automatic stop ON/OFF display area 41o4, an automatic power reduction display area 41o5, and an automatic power reduction ON/OFF display area 41o6. The menu screen display area 41o may include other display areas.

The driving mode display area 41o1 is a display area that displays the current driving mode. The driving mode display area 41o1 can display the current driving mode, for example, by displaying characters and figures. For example, when the current driving mode is "ECO mode", the driving mode display area 41o1 can display the characters "ECO MODE" and a "leaf" figure, which is a figure that indicates ECO mode.

The driving mode ON/OFF display area 41o2 can display the characters "ON/OFF." The operator can select to change to ECO mode by tapping "ON," and can select to end ECO mode by tapping "OFF." In addition, the selected state may be indicated by underlining "ON" or "OFF" in the driving mode ON/OFF display area 41o2.

The automatic stop display area 41o3 is an area that displays information related to the automatic stop of the engine 11. The automatic stop display area 41o3 can display information related to the automatic stop of the engine 11, for example, by displaying characters and figures. The automatic stop display area 41o3 can display, for example, the characters "AUTO STOP" and an engine icon that is a figure that resembles the engine 11.

The automatic stop ON/OFF display area 41o4 can display the characters "ON/OFF." The operator can select automatic stopping of the engine 11 by tapping "ON," and can select not to use the automatic stopping function of the engine 11 by tapping "OFF." In addition, the selected state may be indicated by underlining "ON" or "OFF" in the automatic stop ON/OFF display area 41o4.

The automatic power reduction display area 41o5 is an area that displays information related to the automatic power reduction of the engine 11. The automatic power reduction display area 41o5 can display information related to the automatic power reduction of the engine 11, for example, by displaying characters and figures. The automatic power reduction display area 41o5 can display, for example, the characters "AUTO DOWN" and an engine icon that is a figure that resembles the engine 11.

The automatic power reduction ON/OFF display area 41o6 can display the characters "ON/OFF." The operator can select automatic power reduction of the engine 11 by tapping "ON," and can select not to use the automatic power reduction function of the engine 11 by tapping "OFF." In addition, the selected state may be indicated by underlining "ON" or "OFF" in the automatic power reduction ON/OFF display area 41o6.

When the menu screen display area 41o is tapped, the display device 40 may display more detailed items. The display device 40 may also perform highlighting by changing the color of text or the color of shapes.

The display device 40 can also reduce the area of the image display area 41n when forming the menu screen display area 41o. When the rotation speed mode display area 41i is tapped, the display device 40 can reduce the area of the image display area 41n and shift it upward to form the menu screen display area 41o between the image display area 41n and the lower display area 41C. The display device 40 can reduce the area of the overhead image display area 41n1, and can also reduce the area of the rear image display area 41n2 and the right side image display area 41n3. The display device 40 can also reduce the area of all of the overhead image display area 41n1, the rear image display area 41n2, and the right side image display area 41n3.

The display device 40 may also form a menu screen display area 41o between the upper display area 41A and the image display area 41n, for example. The menu screen display area 41o is not limited to being included in the main display area 41B, and may be included in the upper display area 41A or the lower display area 41C. The menu screen display area 41o may be located at the bottommost part of the image display unit 41.

The menu screen display area 41o may be formed in the normal operation mode or in other operation modes. The menu screen display area 41o may also include a display area that displays other items.

Next, the screen displayed when the output of the engine 11 is reduced will be described with reference to FIG. 6. FIG. 6 is a diagram showing an example of a screen displayed on the display device 40, and is a diagram showing an example of a screen displayed when the output of the engine 11 is reduced.

The display device 40 can change the display in the rotation speed mode display area 41i according to the state of the engine 11. The display device 40 can also display a message according to the state of the engine 11. The controller 30 can grasp the state of the engine 11 and transmit a signal to the control unit 40a of the display device 40 to change the display according to the state of the engine 11. The display device 40 can change the display content in the image display unit 41 based on the signal from the controller 30.

When reducing the output of the engine 11, the display device 40 can change the color of the interior of the engine icon 11d to a color different from the normal driving mode and the ECO mode. The display device 40 can change the color of the interior of the engine icon 11d to red, for example. The color of the interior of the engine icon 11d may be other colors, such as blue. By changing the color of the interior of the engine icon 11d when reducing the output of the engine 11, the operator can easily recognize that the output of the engine 11 is being reduced. The operator can easily recognize that the state is different from the normal driving mode.

When reducing the output of the engine 11, the display device 40 can display text and an arrow in the second rotation speed mode display area 41i2. The display device 40 can display a downward arrow inside the engine icon 11d in the second rotation speed mode display area 41i2. The display device 40 can display text information related to the reduction in the output of the engine 11 inside the engine icon 11d.

The main display area 41B also includes a message display area 41r. The message display area 41r is an area that displays a message according to the state of the engine 11. The message display area 41r can display graphics and messages according to the state of the engine 11. The message display area 41r can display the words "REFILL DEF" when the output of the engine 11 is decreasing. The message display area 41r can display the words "AUTO IDLE" when the engine 11 is in an auto-idle state in which the engine 11 automatically idles. Other words may be displayed in the message display area 41r.

In the excavator 100, the output of the engine 11 can be changed depending on the remaining amount of urea water. The controller 30 detects the remaining amount of urea water, and when the remaining amount of urea water is low, the output of the engine 11 can be reduced to reduce the amount of urea water used. The operator can recognize the reduction in the output of the engine 11 by looking at the rotation speed mode display area 41i and the message display area 41r.

The message display area 41r is arranged, for example, in the main display area 41B, above the image display area 41n. The message display area 41r is arranged between the upper display area 41A and the image display area 41n. The message display area 41r may be arranged in another position. The message display area 41r may be arranged, for example, below the image display area 41n. The message display area 41r is not limited to being included in the main display area 41B, and may be included in the upper display area 41A or the lower display area 41C. The message display area 41r may be arranged at the lowest part of the image display unit 41.

The menu screen M1 may also include a message display as a detailed display. This allows a message to be displayed as a detailed display when the operator touches the rotation speed mode display area 41i. While viewing the message, the operator can operate the menu screen M1 to change the settings and operation mode of the engine 11.

Examples of message displays include "AUTO IDLE", "COOLING DOWN", "PREHEATING", "AUTO WARM UP", and "REFILL DEF". When displaying such a message, the display device 40 may change the color of the text and the surrounding area to a color different from normal. The display device 40 may also display figures, symbols, etc. related to the message together with the message. The display device 40 may also display the text, figures, symbols, etc. related to the message inside the engine icon 11d. The display device 40 may also change the color of the engine icon 11d to match the content of the message.

Next, an example of the processing procedure when changing the screen displayed on the display device 40 will be described with reference to FIG. 7. FIG. 7 is a flowchart showing the processing procedure when changing the screen displayed on the display device 40. In the display device 40, the processing when changing the screen may be executed by the controller 30 or may be executed by the control unit 40a of the display device 40.

The display device 40 performs a display during normal operation, for example, as shown in FIG. 3 (step S11). The display device 40 performs a display during normal operation in response to a command signal output from the controller 30. The controller 30 determines whether the dial 32 has been operated (step S12). The controller 30 receives a signal from the dial 32 and detects a rotation operation of the dial 32. If the controller 30 receives a rotation operation of the dial 32, it determines that the dial 32 has been operated (step S12; YES) and proceeds to step S13. If the controller 30 does not receive a rotation operation of the dial 32, it determines that the dial 32 has not been operated (step S12; NO) and proceeds to step S14.

In step S13, the controller 30 sends a command signal to the display device 40 to change the display of the engine output. The display device 40 changes the display content in the RPM mode display area 41i in response to the change in the RPM mode of the engine 11. As described above, the display device 40 changes the numbers in the RPM mode first display area 41i1. The display device 40 changes the lighting state of the multiple gauges G1 to G10 in the RPM mode second display area 41i2. After step S13, the controller 30 proceeds to step S14.

In step S14, the controller 30 determines whether the engine icon 11d in the rotation speed mode display area 41i has been tapped. The controller 30 receives a signal from the display device 40 and determines whether the engine icon 11d has been tapped.

If the controller 30 detects a tap on the engine icon 11d, it determines that the engine icon 11d has been tapped (step S14; YES) and proceeds to step S15. If the controller 30 does not detect a tap on the engine icon 11d, it determines that the engine icon 11d has not been tapped (step S14; NO) and ends the process here.

In step S15, the display device 40 receives a signal from the controller 30 and displays the menu screen M1. The display device 40 displays the menu screen M1 in the menu screen display area 41o. After step S15, the controller 30 proceeds to step S16.

In step S16, the controller 30 determines whether the driving mode has been changed. For example, if the driving mode ON/OFF display area 41o2 is operated and a change in the driving mode is received (step S16; YES), the controller 30 determines that the driving mode has been changed and proceeds to step S17. If a change in the driving mode has not been received (step S16; NO), the controller 30 determines that the driving mode has not been changed and ends the process here.

In step S17, the display device 40 changes the display of the driving mode in the driving mode display area 41i4. For example, if ECO mode is selected, the display device 40 displays an icon resembling a leaf, which is a graphic that indicates ECO mode, in the driving mode display area 41i4. After executing step S17, the process here ends, and the controller 30 repeats the processes of steps S11 to S17.

(Action and Effect)
The excavator 100 according to this embodiment includes a lower traveling body 1, an upper rotating body 3 rotatably mounted on the lower traveling body 1, an engine 11 mounted on the upper rotating body 3, and a display device 40 mounted on the upper rotating body 3. The display device 40 displays arc-shaped gauges G1 to G10 to display the rotation speed mode of the engine 11, which indicates the output level of the engine 11. According to this excavator 100, the rotation speed mode of the engine 11 can be confirmed by looking at the arc-shaped gauges G1 to G10, and the output level of the engine 11 can be grasped. Since the gauges G1 to G10 are arranged in an arc shape, the range in which the gauges are arranged can be narrowed compared to gauges arranged in a straight line, and the gauges are easy to see for the operator. The operator can recognize the current output level of the engine 11 by looking at the gauges G1 to G10 displayed on the display device 40.

The shovel 100 also includes a dial 32 that can be rotated infinitely, and the output of the engine 11 can be changed according to the rotational position of the dial 32. Since the dial 32 rotates 360 degrees or more and is not stopped at a predetermined stop position, it is not easy for the operator to determine the engine speed mode from the stop position of the dial 32. Even if the operator determines the position of the dial 32 by the feeling of his/her hand after rotating the dial 32, it is difficult for the operator to determine the set engine speed mode. According to the shovel 100, the operator can easily recognize the current output level of the engine 11 by looking at the gauges G1 to G10 displayed on the display device 40.

In addition, in the shovel 100, the engine 11 can execute multiple operating modes, and the display device 40 can change the color of the gauges G1 to G10 according to the operating mode or the output level of the engine 11. In such an shovel 100, the change in the operating mode or the output level of the engine 11 can be easily grasped by the difference in color of the gauges G1 to G10. This allows the operator to grasp the operating mode or the output level of the engine 11 without feeling any burden.

In addition, in the excavator 100, the display device 40 displays an engine icon 11d that resembles the shape of the engine 11, and displays the engine 11 rotation speed mode inside the engine icon. This allows the operator to easily imagine the engine 11 by looking at the engine icon 11d, and to easily understand the output of the engine 11 by checking the rotation speed mode arranged inside the engine icon 11d.

The shovel 100 also has a touch panel that allows touch input, and when the engine icon 11d or the multiple gauges G1 to G10 are touched, the display device 40 displays a menu screen M1 as a detailed display of the engine 11. With this type of shovel 100, the operator can display the menu screen M1 by touching the rotation speed mode display area 41i displayed on the display device 40. The operator can use the menu screen M1 to check the settings of the engine 11. Furthermore, the operator can change the operation mode and settings of the engine 11 by operating the menu screen M1.

In addition, in the excavator 100, the display device 40 displays an operation mode icon, which is a graphic that indicates the operation mode of the engine 11, near the gauges G1 to G10. The display device 40 displays a leaf, which is an operation mode icon indicating ECO mode, near the gauges G1 to G10 in the operation mode display area 41i4. This allows the operator to look at the gauges G1 to G10 to understand the current rotation speed mode of the engine 11 and to visually understand the current operation mode. The operator can intuitively understand the current output level of the engine 11 and the current operation mode.

In addition, in the excavator 100, the display device 40 displays multiple gauges G1 to G10 to indicate the maximum output level of the engine 11, and changes the number of gauges G1 to G10 that are lit according to the current RPM mode of the engine 11. The display device 40 displays frames for a total of 10 gauges G1 to G10 according to the maximum output level of the engine 11, and lights up the gauges G1 to G10 according to the current RPM mode of the engine 11.

For example, when the current RPM mode is "P7 mode," the display device 40 lights up seven gauges G1 to G7 out of the ten gauges G1 to G10. When lighting up gauges, the display device 40 lights up all areas including the inner parts of the gauges G1 to G7, and for the gauges G8 to G10 that are not lit up, the outer frame parts are displayed and the inner parts of the gauges are not lit. This allows the operator to visually and intuitively grasp the level of the current RPM mode out of the total number of RPM modes of the engine 11. The operator can visually and intuitively grasp whether the current RPM mode is the maximum output RPM mode, an intermediate RPM mode, or a RPM mode close to the minimum output.

In addition, in the shovel 100, the display device 40 changes the length of the gauges G1 to G10 that are lit depending on the current RPM mode of the engine 11. The multiple gauges G1 to G10 each have the same shape, and the display device 40 can change the length of the gauges that are lit by changing the number of gauges G1 to G10 that are lit. When only gauge G1 is lit, the length is the length of one gauge, when gauges G1 to G7 are displayed, the length is the length of seven gauges, and when gauges G1 to G10 are displayed, the length is the length of ten gauges. With this type of shovel 100, the operator can visually and intuitively grasp the current RPM mode of the engine 11 by grasping the length of the gauges displayed on the display device 40.

In addition, in the excavator 100, the display device 40 displays an operation mode icon indicating the operation mode of the engine 11 between the gauges G1, G2 and the engine icon 11d. The display device 40 has an operation mode display area 41i4 between the gauges G1, G2 and the engine icon 11d. The operation mode display area 41i4 is an area that displays a "leaf" that is a graphic indicating the ECO mode. In such an excavator 100, by displaying the operation mode icon between the gauges G1, G2 and the engine icon 11d, the engine icon 11d, the gauges G1, G2, and the operation mode icon are displayed together, so that the operator can instantly grasp the rotation speed mode and operation mode of the engine 11.

(First Modification 1)
Next, an example of a screen displayed on the display device 40 will be described with reference to Fig. 8. Fig. 8 is a diagram showing an example of a screen displayed on the display device 40, in which gauges G1 to G8 indicating the output level of the engine 11 are arranged below. The screen shown in Fig. 8 differs from the screen shown in Fig. 3 in that the arrangement of the rotation speed mode second display area 41q is different.

The display device 40 has a second rotation speed mode display area 41q between the image display area 41n and the lower display area 41C. The second rotation speed mode display area 41q is an area that displays the total number of rotation speed modes of the engine 11 and the current rotation speed mode using multiple gauges G1 to G8. One gauge may indicate one rotation speed mode, or one gauge may indicate two or more rotation speed modes. The multiple gauges G1 to G8 are arranged in an arc shape.

The second rotation speed mode display area 41q includes an area that displays a needle M2 pointing to a gauge that corresponds to the current rotation speed mode. The display device 40 can display the needle M2 by changing its orientation depending on the current rotation speed mode.

The display device 40 displays the gauge G1, the gauges G2 to G7, and the gauge G8 in different colors. The display device 40 may display the gauge G1 in red and the gauge G8 in blue. This allows the operator to easily distinguish between the minimum engine output, the intermediate engine output, and the maximum engine output.

The multiple gauges G1 to G8 may be arranged to extend across substantially the entire width of the image display unit 41. The rotation speed mode second display area 41q shown in FIG. 8 is longer in the width direction of the image display unit 41 than the rotation speed mode second display area 41i2 shown in FIG. 3.

In this way, the display device 40 can display the rotation speed mode second display area 41q longer and larger in the width direction of the image display unit 41. The display device 40 can place the rotation speed mode second display area 41q in other positions.

(Second Modification)
Next, an example of a screen displayed on the display device 40 will be described with reference to Fig. 9. Fig. 9 is a diagram showing an example of a screen displayed on the display device 40, and is a diagram showing the output level of the motor. The screen shown in Fig. 9 differs from the screen shown in Fig. 5 in that a motor icon 11e is displayed instead of the engine icon 11d.

In the second modified example, the shovel 100 is an electric shovel and includes a motor as a drive source. The storage battery 70 supplies power to the motor and the main pump 14. The motor can execute multiple operating modes with different output levels.

The operation modes include motor rotation speed modes. The excavator 100 can execute, for example, P1 mode, P2 mode, and P3 mode as motor rotation speed modes. P4 mode, P5 mode, P6 mode, P7 mode, P8 mode, P9 mode, P10 mode, and SP mode. The motor rotation speed differs between these P1 to P10 modes and SP mode. In the excavator 100, the motor rotation speed is maximum in SP mode, and the motor output is maximum. In P1 mode, the motor rotation speed is the lowest, and in P2 to P10 modes, the motor rotation speed increases. The excavator 100 can execute, for example, 11 different stages of motor output.

The display device 40 displays a motor icon 11e in the rotation speed mode second display area 41i2. The motor icon 11e is a graphic that resembles the outer shape of a motor. The motor icon 11e includes a shape that corresponds to the rotation shaft of the motor.

In this way, the shovel 100 may be an electric shovel having a motor as a drive source. In this case, the display device 40 displays the motor icon 11e in the rotation speed mode second display area 41i2. In such an shovel 100, the same effects as those of the above embodiment are achieved.

The above describes the form for implementing the present invention, but the above content does not limit the content of the invention, and various modifications and improvements are possible within the scope of the present invention.

In the above embodiment, the case where a gauge arranged in an arc shape is displayed is described, but the gauge may be arranged along the circumference. The arrangement of the arc-shaped gauge may be curved so as to jut out upward, downward, or to the side. The curvature of the arc-shaped gauge may be the same or may be different depending on the position. Multiple gauges may be arranged along the circumference of an ellipse.

In the above embodiment, an example is given of changing the output of the drive source using an infinitely rotatable dial-type operation unit, but the operation method for changing the output of the drive source is not limited to this. For example, the shovel 100 may be capable of changing the output of the drive source by rotating a dial to a preset rotation position. The shovel 100 may also be capable of changing the rotation speed of the drive source by pressing a button, or may be capable of changing the rotation speed of the drive source by operating a lever. The shovel 100 may also be capable of changing the rotation speed of the drive source by operating a touch panel, for example.

In the above embodiment, the output level of the drive source is displayed by changing the number of gauges G1 to G10 that are lit, but this is not limited to the above. For example, the display device 40 may change the area of the lit region of one gauge to change the length of the gauge and display an increase or decrease in the output level of the drive source.

100 Shovel 1 Lower traveling body 3 Upper rotating body 11 Engine (driving source)
11d engine icon 32 dial 40 display device 41 image display section 41i rotation speed mode display area 41i1 rotation speed mode first display area 41i2 rotation speed mode second display area G1 to G10 gauge M1 menu screen

Claims (10)

A lower running body;
An upper rotating body rotatably mounted on the lower traveling body;
A drive source mounted on the upper rotating body;
A display device mounted on the upper rotating body,
The display device displays an arc-shaped gauge to display the output level of the drive source. Equipped with an infinitely rotatable dial-type control,
The shovel according to claim 1 , wherein the output of the drive source is changeable in accordance with a rotational position of the dial-type operating unit. The drive source is capable of executing a plurality of operation modes,
The shovel according to claim 1 , wherein the display device is capable of changing a color of the gauge depending on the operation mode or the output of the drive source. The shovel according to claim 1, wherein the display device displays a drive source icon that resembles the shape of the drive source, and displays the output level of the drive source inside the drive source icon. The display device has a touch panel that allows touch input,
The shovel according to claim 4 , wherein when the drive source icon or the display of the output level is touched, the display device displays details about the drive source. The shovel according to claim 5, wherein the detailed display of the drive source includes a menu screen for changing the settings of the drive source. The shovel according to claim 1, wherein the display device displays an operation mode icon indicating the operation mode of the drive source near the gauge. The shovel according to claim 1, wherein the display device displays a plurality of the gauges to indicate the maximum output level of the drive source, and changes the number of the gauges that are lit depending on the current output level of the drive source. The shovel according to claim 1, wherein the display device changes the length of the gauge that is lit depending on the current output level of the drive source. The shovel according to claim 4 , wherein the display device displays an operation mode icon indicating an operation mode of the driving source between the gauge and the driving source icon.

Images