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US-12624531-B2 - Display device for shovel, and shovel

US12624531B2US 12624531 B2US12624531 B2US 12624531B2US-12624531-B2

Abstract

A display device for a shovel displays a screen that includes an image represented by image data captured by an imaging device included in the shovel. The screen further includes an icon image corresponding to an instruction to correct a reference value used to calculate the weight of a load object conveyed by the end attachment of the shovel.

Inventors

  • Takashi Nishi

Assignees

  • SUMITOMO CONSTRUCTION MACHINERY CO., LTD.

Dates

Publication Date
20260512
Application Date
20230928
Priority Date
20210329

Claims (18)

  1. 1 . A display device for a shovel, wherein: the display device is configured to display a screen that includes an image display area displaying an image represented by image data captured by an imaging device included in the shovel; and a work information display area displaying an icon image corresponding to an instruction to correct a reference value used to calculate a weight of a load object conveyed by an end attachment of the shovel, and a display mode of the icon image is changed to notify an operator of the shovel that an operation of correcting the reference value is permitted, when a state of the end attachment satisfies a predetermined condition.
  2. 2 . A display device for a shovel, wherein the display device is configured to display a screen that includes an image represented by image data captured by an imaging device included in the shovel; and an icon image corresponding to an instruction to correct a reference value used to calculate a weight of a load object conveyed by an end attachment of the shovel, a display mode of the icon image is changed to a display mode indicating that an operation of correcting the reference value is permitted, when a state of the end attachment satisfies a predetermined condition, and the display mode of the icon image is displayed in a display mode indicating that the operation of correcting the reference value is invalid, when the state of the end attachment does not satisfy the predetermined condition.
  3. 3 . The display device according to claim 2 , wherein the predetermined condition is that the state of the end attachment is determined to be an empty load state.
  4. 4 . The display device according to claim 3 , wherein the predetermined condition is that a difference between a weight of the end attachment and the reference value is less than or equal to a predetermined threshold value.
  5. 5 . The display device according to claim 4 , wherein an operation of setting the reference value is an operation of selecting an input device associated with the icon image, and when the operation is performed, the weight of the end attachment when the predetermined condition is satisfied is set as the reference value.
  6. 6 . The display device according to claim 5 , wherein the screen is displayed in loading of the load object onto a cargo bed of a conveying vehicle from the end attachment.
  7. 7 . The display device according to claim 6 , wherein the display device is configured to display another screen, said another screen including the image data captured by the imaging device and an icon image for displaying the screen, and said another screen transitions to the screen when an input device corresponding to the icon image for displaying the screen is selected.
  8. 8 . The display device according to claim 7 , wherein the screen is a loading work screen, said another screen is a main screen, the icon image for displaying the screen is an icon image for transitioning the main screen to the loading work screen, and the input device corresponding to the icon image for displaying the screen is an input device corresponding to a tab displaying the icon image for transitioning the main screen to the loading work screen.
  9. 9 . The display device according to claim 1 , wherein the work information display area displays information on loading work.
  10. 10 . The display device according to claim 9 , wherein a load amount image, a remaining load amount, a loaded amount, an icon image of the end attachment, and a weight of earth and sand in the end attachment are displayed in the work information display area.
  11. 11 . The display device according to claim 10 , wherein the load amount image includes an image of a side surface of a dump truck, and a bar chart image indicating a loaded amount on a cargo bed of the dump truck, and the bar chart image indicates a ratio of the loaded amount of earth and sand on the cargo bed of the dump truck to a maximum load amount of the dump truck.
  12. 12 . A shovel comprising: an upper swing body; a lower traveling body; an end attachment; an imaging device; a hardware processor configured to calculate a weight of a load object conveyed by the end attachment; and a display device configured to display a screen that includes an image display area displaying an image represented by image data captured by the imaging device, and a work information display area displaying an icon image corresponding to an instruction to correct a reference value used to calculate the weight of the load object conveyed by the end attachment, wherein the hardware processor is configured to change a display mode of the icon image upon determining a timing of correction of the reference value used to calculate the weight of the load object, and the hardware processor is configured to determine whether the end attachment is empty based on an output of a sensor of the shovel, and change the display mode of the icon image to notify an operator of the shovel that the correction of the reference value is allowed, in response to determining that the end attachment is empty.
  13. 13 . The display device according to claim 1 , wherein the display device is configured to simultaneously display the image represented by the image data and the icon image on the same screen.
  14. 14 . The display device according to claim 1 , wherein the image represented by the image data captured by the imaging device includes at least one of a bird's eye view image, a front side image, a rear side image, a left side image, and a right side image of the shovel.
  15. 15 . The shovel according to claim 12 , wherein the display device is configured to simultaneously display the image represented by the image data and the icon image on the same screen.
  16. 16 . The shovel according to claim 12 , wherein the image represented by the image data captured by the imaging device includes at least one of a bird's eye view image, a front side image, a rear side image, a left side image, and a right side image of the shovel.
  17. 17 . The shovel according to claim 12 , wherein the hardware processor is configured to prohibit the correction of the reference value in response to determining that the end attachment is not empty.
  18. 18 . The shovel according to claim 12 , further comprising: an attachment including a boom attached to the upper swing body, an arm attached to the boom, and the end attachment attached to the arm; and a boom cylinder configured to drive the boom, wherein the hardware processor is configured to calculate a weight of the end attachment based on a thrust of the boom cylinder, determine whether a difference between the weight of the end attachment and the reference value is less than or equal to a predetermined threshold value, and determine that the end attachment is empty in response to determining that the difference between the weight of the end attachment and the reference value is less than or equal to the predetermined threshold value.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation application filed under 35 U.S.C. 111(a) claiming benefit under 35 U.S.C. 120 and 365(c) of PCT International Application No. PCT/JP2022/013563, filed on Mar. 23, 2022 and designating the U.S., which claims priority to Japanese Patent Application No. 2021-055151, filed on Mar. 29, 2021. The entire contents of the foregoing applications are incorporated herein by reference. BACKGROUND Technical Field The present disclosure relates to display devices for shovels and to shovels. Description of Related Art With respect to shovels, the technique of calculating the weight of earth and sand or the like loaded in a bucket by comparing the weight of the bucket in an empty load state with the weight of the bucket after excavation is known. SUMMARY According to an aspect, a display device for a shovel displays a screen that includes an image represented by image data captured by an imaging device included in the shovel. The screen further includes an icon image corresponding to an instruction to correct a reference value used to calculate the weight of a load object conveyed by the end attachment of the shovel. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view of a shovel according to an embodiment; FIG. 2 is a diagram for schematically illustrating an example of a configuration of the shovel according to the embodiment; FIG. 3 is a diagram for schematically illustrating an example of a hydraulic system configuration for the shovel according to the embodiment; FIG. 4A is a diagram of a part of the hydraulic system related to operation of an arm cylinder; FIG. 4B is a diagram of a part of the hydraulic system related to a boom cylinder; FIG. 4C is a diagram of a part of the hydraulic system related to a bucket cylinder; FIG. 4D is a diagram of a part of the hydraulic system related to a swing hydraulic motor; FIG. 5 is a diagram for schematically illustrating an example of components related to an earth and sand weight detection function of the shovel according to the embodiment; FIG. 6 is a diagram for explaining a reference value; FIG. 7 is a flowchart for explaining processing performed by a display control part; FIG. 8 is a diagram for illustrating an example of a main screen; and FIG. 9 is a diagram for illustrating an example of a loading work screen. DETAILED DESCRIPTION The related-art technique described above is silent with respect to a method of setting the weight of the bucket in the empty load state to be subtracted from the weight of the bucket after excavation. According to an embodiment, the weight of an end attachment in the empty load state can be easily set. An embodiment is described below with reference to the accompanying drawings. First, an overview of a shovel 100 according to the embodiment is given with reference to FIG. 1. FIG. 1 is a side view of the shovel 100 serving as an excavator according to this embodiment. In FIG. 1, in the shovel 100, an example of a target track BS described below is also illustrated on an upward inclined surface ES to be excavated. The shovel 100 according to this embodiment includes a lower traveling body 1, and an upper swing body 3 which is swingable mounted on the lower traveling body 1 via a swing mechanism 2. The shovel further includes a boom 4, an arm 5, and a bucket 6 which constitutes an attachment, and a cabin 10. The lower traveling body 1 causes the shovel 100 to travel by the pair of left and right crawlers being hydraulically driven by traveling hydraulic motors 1L, 1R (described below, see FIG. 2), respectively. That is, the pair of traveling hydraulic motors 1L, 1R (an example of a traveling motor) drives the lower traveling body 1 (crawlers) as a driven part. The upper swing body 3 is driven by a swing hydraulic motor 2A (described below, see FIG. 2) to swing with respect to the lower traveling body 1. That is, the swing hydraulic motor 2A is a swing driving part that drives the upper swing body 3 as a driven part, and can change the orientation of the upper swing body 3. The upper swing body 3 may be electrically driven by a motor (hereinafter referred to as a “swing motor”) instead of the swing hydraulic motor 2A. That is, similarly to the swing hydraulic motor 2A, the swing motor is a swing drive part that drives the upper swing body 3 as a driven part, and can change the orientation of the upper swing body 3. The boom 4 is pivotally attached to the front center portion of the upper swing body 3 to be able to move vertically, the arm 5 is pivotally attached to the distal end portion of the boom 4 to be able to pivot vertically, and the bucket 6 serving as an end attachment is pivotally attached to the distal end portion of the arm 5 to be able to pivot vertically. The boom 4, the arm 5, and the bucket 6 are hydraulically driven by a boom cylinder 7, an arm cylinder 8, and a bucket cylinder 9, respectively, serving as hydraulic actuators. Note that the bucket 6 is