WO2017115810A1 - ショベル - Google Patents
ショベル Download PDFInfo
- Publication number
- WO2017115810A1 WO2017115810A1 PCT/JP2016/088954 JP2016088954W WO2017115810A1 WO 2017115810 A1 WO2017115810 A1 WO 2017115810A1 JP 2016088954 W JP2016088954 W JP 2016088954W WO 2017115810 A1 WO2017115810 A1 WO 2017115810A1
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- WO
- WIPO (PCT)
- Prior art keywords
- recommended line
- excavation
- recommended
- work target
- ground
- Prior art date
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/26—Indicating devices
- E02F9/261—Surveying the work-site to be treated
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/26—Indicating devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/26—Indicating devices
- E02F9/264—Sensors and their calibration for indicating the position of the work tool
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2025—Particular purposes of control systems not otherwise provided for
- E02F9/2037—Coordinating the movements of the implement and of the frame
Definitions
- the present invention relates to an excavator.
- the excavator operator operates the various operation levers to move the attachment, and for example, performs excavation and the like so that the work target has a target shape. In such excavation work, it is difficult for the operator to excavate exactly according to the target shape visually.
- a guide including a target surface line that is a line segment indicating a cross section of the target surface based on the position information of the design surface indicating the target shape of the work target, an extension line that extends the target surface line, and the position of the blade edge of the bucket.
- a display system for a hydraulic excavator that displays a screen is known (for example, see Patent Document 1).
- the present invention has been made in view of the above, and an object thereof is to provide an excavator capable of improving work efficiency.
- the lower traveling body that performs the traveling operation the upper revolving body that is rotatably mounted on the lower traveling body, the attachment that is attached to the upper revolving body, and the work target
- a ground shape acquisition unit that acquires a current ground shape
- a recommended line calculation unit that calculates a recommended line suitable for excavation with the attachment in the current ground shape acquired by the ground shape acquisition unit
- the work target And a display device for displaying the current ground shape and the recommended line.
- an excavator capable of improving work efficiency is provided.
- FIG. 1 is a side view of an excavator according to an embodiment.
- FIG. 2 is a side view of the shovel illustrating the output contents of various sensors constituting the attitude detection device mounted on the shovel of FIG.
- FIG. 3 is a diagram illustrating a configuration of a drive system mounted on the shovel of FIG.
- FIG. 4 is a functional block diagram illustrating the configuration of the controller.
- FIG. 5 is a diagram illustrating an image displayed on the display device when excavating sandy soil.
- FIG. 6 is a diagram illustrating an image displayed on the display device when excavating the clay.
- FIG. 7 is a diagram illustrating an image displayed on the display device when sandy soil is excavated for a plurality of cycles.
- FIG. 8 is a diagram illustrating an image displayed on the display device when excavating sandy soil in consideration of an embedded object.
- FIG. 9 is a diagram illustrating an example of an image when the excavation work is viewed from above.
- FIG. 1 is a side view of an excavator according to an embodiment of the present invention.
- the upper swing body 3 is mounted on the lower traveling body 1 of the excavator via the swing mechanism 2.
- a boom 4 is attached to the upper swing body 3.
- An arm 5 is attached to the tip of the boom 4, and a bucket 6 is attached to the tip of the arm 5.
- 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.
- the boom 4, the arm 5, and the bucket 6 as work elements constitute a drilling attachment.
- the attachment may be another attachment such as a floor moat attachment, a leveling attachment, and a heel attachment.
- the upper swing body 3 is provided with a cabin 10 and is mounted with a power source such as an engine 11. Further, a communication device M1, a positioning device M2, an attitude detection device M3, and a front camera S1 are attached to the upper swing body 3.
- the communication device M1 is a device that controls communication between the excavator and the outside.
- the communication device M1 controls wireless communication between a GNSS (Global Navigation Satellite System) survey system and an excavator.
- GNSS Global Navigation Satellite System
- the communication device M1 acquires the terrain information of the work site when starting the excavator work at a frequency of once a day, for example.
- the GNSS survey system employs, for example, a network type RTK-GNSS positioning method.
- the positioning device M2 is a device that measures the position and orientation of the excavator.
- the positioning device M2 is a GNSS receiver that incorporates an electronic compass, and measures the latitude, longitude, and altitude of the location of the shovel and measures the orientation of the shovel.
- the posture detection device M3 is a device that detects the posture of each part of the attachment such as the boom 4, the arm 5, and the bucket 6.
- the front camera S1 is an imaging device that images the front of the excavator.
- the front camera S1 images the ground shape after being excavated by the attachment.
- FIG. 2 is a side view of the shovel showing an example of output contents of various sensors constituting the attitude detection device M3 mounted on the shovel according to the present embodiment.
- the attitude detection device M3 includes a boom angle sensor M3a, an arm angle sensor M3b, a bucket angle sensor M3c, and a vehicle body tilt sensor M3d.
- the boom angle sensor M3a is a sensor that acquires the boom angle ⁇ 1, and for example, a rotation angle sensor that detects the rotation angle of the boom foot pin, a stroke sensor that detects the stroke amount of the boom cylinder 7, and an inclination angle of the boom 4 Including an inclination (acceleration) sensor.
- the boom angle ⁇ 1 is an angle with respect to the horizontal line of the line segment connecting the boom foot pin position P1 and the arm connecting pin position P2 in the XZ plane.
- the arm angle sensor M3b is a sensor that acquires the arm angle ⁇ 2.
- a rotation angle sensor that detects the rotation angle of the arm connecting pin
- a stroke sensor that detects the stroke amount of the arm cylinder 8
- an inclination angle of the arm 5 are detected.
- the arm angle ⁇ 2 is an angle with respect to a horizontal line segment connecting the arm connecting pin position P2 and the bucket connecting pin position P3 in the XZ plane.
- the bucket angle sensor M3c is a sensor that acquires the bucket angle ⁇ 3.
- the rotation angle sensor that detects the rotation angle of the bucket connecting pin, the stroke sensor that detects the stroke amount of the bucket cylinder 9, and the inclination angle of the bucket 6 are detected.
- the bucket angle ⁇ 3 is an angle with respect to a horizontal line segment connecting the bucket connecting pin position P3 and the bucket toe position P4 in the XZ plane.
- the vehicle body inclination sensor M3d is a sensor that acquires an inclination angle ⁇ 4 around the Y axis of the shovel and an inclination angle ⁇ 5 (not shown) around the X axis of the shovel, and includes, for example, a biaxial inclination (acceleration) sensor. .
- the XY plane in FIG. 2 is a horizontal plane.
- FIG. 3 is a diagram illustrating a configuration example of a drive system mounted on the excavator according to the present embodiment.
- the mechanical power transmission line, the high-pressure hydraulic line, the pilot line, and the electric control line are a double line, a solid line, It is indicated by a broken line and a dotted line.
- the excavator drive system mainly includes an engine 11, main pumps 14L and 14R, a pilot pump 15, a control valve 17, an operation device 26, an operation content detection device 29, and a controller 30.
- the engine 11 is, for example, a diesel engine that operates so as to maintain a predetermined rotational speed.
- the output shaft of the engine 11 is connected to the input shafts of the main pumps 14L and 14R and the pilot pump 15.
- the main pumps 14L and 14R are devices for supplying hydraulic oil to the control valve 17 via a high-pressure hydraulic line, and are, for example, swash plate type variable displacement hydraulic pumps.
- the discharge pressures of the main pumps 14L and 14R are detected by a discharge pressure sensor 18.
- the discharge pressure values of the main pumps 14L and 14R detected by the discharge pressure sensor 18 are output to the controller 30.
- the pilot pump 15 is a device for supplying hydraulic oil to various hydraulic control devices such as the operation device 26 via the pilot line 25, and is, for example, a fixed displacement hydraulic pump.
- the control valve 17 is a hydraulic control device that controls the hydraulic system in the excavator.
- the control valve 17 includes flow control valves 171 to 176 that control the flow of hydraulic oil discharged from the main pumps 14L and 14R.
- the control valve 17 is connected to the boom cylinder 7, the arm cylinder 8, the bucket cylinder 9, the traveling hydraulic motor 1A (for left), the traveling hydraulic motor 1B (for right), and the turning hydraulic motor 2A through the flow control valves 171 to 176.
- the hydraulic oil discharged from the main pumps 14L and 14R is selectively supplied to one or more of them.
- the boom cylinder 7, the arm cylinder 8, the bucket cylinder 9, the traveling hydraulic motor 1A (for left), the traveling hydraulic motor 1B (for right), and the turning hydraulic motor 2A are collectively referred to as “hydraulic actuator”. Called.
- the operating device 26 is a device used by an operator for operating the hydraulic actuator.
- the operating device 26 supplies the hydraulic oil discharged from the pilot pump 15 through the pilot line 25 to the pilot ports of the flow control valves corresponding to the hydraulic actuators.
- the hydraulic oil pressure (pilot pressure) supplied to each pilot port is a pressure corresponding to the operation direction and operation amount of a lever or pedal (not shown) of the operation device 26 corresponding to each hydraulic actuator. It is.
- the operation content detection device 29 is a device that detects the operation content of the operator using the operation device 26.
- the operation content detection device 29 detects the operation direction and operation amount of the lever or pedal of the operation device 26 corresponding to each of the hydraulic actuators in the form of pressure, and outputs the detected value to the controller 30.
- the operation content of the operation device 26 may be derived using the output of a sensor other than the pressure sensor such as a potentiometer.
- the controller 30 is a control device for controlling the excavator, and includes, for example, a computer including a CPU, a RAM, a nonvolatile memory, and the like. Further, the controller 30 reads programs corresponding to various functional elements from the ROM, loads them into the RAM, and causes the CPU to execute processes corresponding to the various functional elements.
- the controller 30 is connected to the discharge pressure sensor 18, the display device 50, the communication device M1, the positioning device M2, the attitude detection device M3, and the front camera S1.
- the controller 30 executes various calculations based on various data input from the discharge pressure sensor 18, the communication device M1, the positioning device M2, the posture detection device M3, and the front camera S1, and outputs the calculation results to the display device 50. .
- the display device 50 is attached, for example, in the cabin 10 at a position where the operator can visually recognize the display screen, and displays the calculation result by the controller 30.
- the display device 50 may be a wearable device provided integrally with, for example, goggles worn by the operator. The visibility of the displayed information is improved, and the excavator operator can perform the work more efficiently.
- FIG. 4 is a functional block diagram illustrating the configuration of the controller 30.
- the controller 30 includes a terrain database update unit 31, a position coordinate update unit 32, a ground shape acquisition unit 33, a soil detection unit 34, and a recommended line calculation unit 35.
- the terrain database update unit 31 is a functional element that updates the terrain database structured systematically so that the terrain information on the work site can be referred to.
- the terrain database update unit 31 updates the terrain database by acquiring the terrain information on the work site through the communication device M1 when the excavator is activated, for example.
- the topographic database is stored in a nonvolatile memory or the like. Further, the terrain information on the work site is described by, for example, a three-dimensional terrain model based on the world positioning system.
- the position coordinate update unit 32 is a functional element that updates the coordinates and orientation representing the current position of the excavator.
- the position coordinate updating unit 32 acquires the position coordinates and orientation of the shovel in the global positioning system based on the output of the positioning device M2, and the coordinates indicating the current position of the shovel stored in the nonvolatile memory or the like Update orientation data.
- the ground shape acquisition unit 33 is a functional element that acquires information related to the current shape of the work target ground.
- the ground shape acquisition unit 33 uses the terrain information updated by the terrain database update unit 31 based on the coordinates and direction indicating the current position of the excavator updated by the position coordinate update unit 32 to determine the ground of the work target. Get the initial shape before excavation.
- the ground shape acquisition unit 33 calculates the current shape of the work target ground after excavating with the shovel based on the past transition of the posture of the attachment detected by the posture detection device M3.
- the ground shape acquisition unit 33 may calculate the current shape of the work target ground after being excavated by the excavator, based on the imaging result of the ground after excavation by the front camera S1. Further, the ground shape acquisition unit 33 performs work after excavation based on both the past transition of the posture of the attachment detected by the posture detection device M3 and the image data of the ground after excavation captured by the front camera S1. The current shape of the ground may be calculated.
- the ground shape acquisition unit 33 acquires the initial shape of the ground of the work target before excavation of the excavator, and calculates the current shape of the ground of the work target after excavation every time excavation is performed by the excavator. For example, each time the boom 4 is lowered, the arm 5 and the bucket 6 are rotated to excavate the ground as a work target, and the boom 4 is raised again to perform excavation for one cycle. The current shape of the work target ground after excavation is calculated.
- the soil quality detection unit 34 is a functional element that detects the soil quality of the work target ground.
- the soil detection unit 34 detects the soil quality of the work target ground based on the discharge pressures of the main pumps 14L and 14R output from the discharge pressure sensor 18 during excavation.
- the soil detection unit 34 determines whether or not excavation is being performed while the bucket 6 is in contact with the work target ground based on the posture of the attachment detected by the posture detection device M3, and is output from the discharge pressure sensor 18.
- the soil pressure is detected by acquiring the discharge pressure value.
- the main pumps 14L and 14R are controlled so as to reduce the output horsepower, and the main pumps 14L, 14L, The discharge pressure of 14R becomes low. Therefore, when the discharge pressure value of the main pumps 14L, 14R detected by the discharge pressure sensor 18 during excavation is less than a preset threshold value, the soil detection unit 34 determines that the ground to be worked is sandy soil. It is determined that
- the soil detection unit 34 is made of clay soil. Judge that there is.
- the soil detection unit 34 may determine based on the discharge pressure values of the main pumps 14L and 14R detected by the discharge pressure sensor 18 in addition to sandy soil and viscous soil. In addition, the soil detection unit 34 may detect the soil quality of the work target ground based on any one or more of boom cylinder pressure, arm cylinder pressure, and bucket cylinder pressure during excavation.
- the recommended line calculation unit 35 is a functional element that calculates a recommended line suitable for excavation in the current ground shape of the work target acquired or calculated by the ground shape acquisition unit 33.
- the recommended line calculation unit 35 uses the capacity of the bucket 6 attached as an attachment and the soil quality of the ground of the work target detected by the soil detection unit 34 to excavate in the current ground shape of the work target. Calculate a suitable recommended line.
- the recommended line is represented by the locus of the tip of the bucket 6.
- the recommended line calculation unit 35 defines a recommended line by the excavation depth and the excavation length. For example, when the ground to be worked is sandy soil, excavation work can be performed with low horsepower by inserting the bucket 6 deeply into the ground and rotating it. Therefore, when the work target ground is sandy soil, the recommended line calculation unit 35 calculates the recommended line so that the excavation depth is deep and the excavation length is short. The excavation depth and excavation length are obtained based on the capacity of the bucket 6, the maximum load loaded, and the like.
- the recommended line calculation unit 35 when the work target ground is cohesive soil, excavation work in which the bucket 6 is inserted deeply into the ground and rotated requires high horsepower, which may deteriorate energy consumption such as fuel consumption. . Therefore, the recommended line calculation unit 35, when the work target ground is a clay soil, the excavation depth is shallower and the excavation length is longer than when the work target ground is a sandy soil.
- the recommended line is calculated as follows.
- the recommended line calculation unit 35 calculates a recommended line for the current shape of the work target ground after excavation every time excavation is performed by the excavator. As described above, when one cycle of excavation is performed by the shovel, the ground shape acquisition unit 33 calculates the current shape of the work target ground after excavation. When the current shape of the work target ground after excavation is calculated by the ground shape acquisition unit 33, the recommended line calculation unit 35 calculates a recommended line suitable for excavating the calculated current shape of the ground. To do.
- the recommended line calculation unit 35 calculates the posture of the attachment such as the angle of the bucket 6 suitable for excavation along the calculated recommended line. For example, the recommended line calculation unit 35 calculates the angle of the bucket 6 when excavating along the recommended line. Note that the recommended line calculation unit 35 may calculate the angles of the boom 4 and the arm 5 that are suitable for excavation along the recommended line.
- the recommended line calculation unit 35 is the current shape of the work target ground acquired or calculated by the ground shape acquisition unit 33, the recommended line for the current shape of the work target ground, and the bucket 6 when excavating along the recommended line.
- the angle is output to the display device 50.
- the display device 50 displays the current shape of the work target ground output from the recommended line calculation unit 35 and the recommended line on the screen. Further, the display device 50 displays on the screen the current position of the attachment detected by the posture detection device M3 and the angle of the bucket 6 when excavating along the recommended line.
- FIG. 5 is a diagram illustrating an image 51 displayed by the display device 50.
- FIG. 5 illustrates an image 51 when excavating sandy soil.
- a bucket current position 61 indicating the current position of the bucket 6 and a current shape 71 of the work target ground are displayed by solid lines.
- the soil detection unit 34 detects the soil quality of the work target ground, and the recommended line calculation unit 35 calculates the recommended line.
- the recommended line calculation unit 35 calculates the angle of the bucket 6 when excavating along the recommended line.
- a recommended line 72 for the current shape 71 of the work target ground is displayed by a broken line.
- bucket excavation positions 62, 63, and 64 when excavating along the recommended line 72 are displayed as broken lines as attachment excavation positions.
- the bucket current position 61 is displayed so as to be displaced in accordance with the actual movement in the image 51 based on the detection result of the posture detection device M3.
- the operator operates the attachment so that the bucket 6 moves along the recommended line 72 while viewing the image 51 displayed on the display device 50. Further, the bucket 6 is rotated so as to match the angle indicated by the bucket excavation positions 62, 63, 64.
- the ground shape after excavation is calculated by the ground shape acquisition unit 33 based on at least one of the past transition of the posture of the attachment detected by the posture detection device M3 and the image of the ground after excavation captured by the front camera S1. .
- a recommended line for the current shape of the ground after excavation is calculated by the recommended line calculation unit 35, and the recommended line 72 in the image 51 is updated and displayed.
- the operator of the excavator can proceed with the excavation work while viewing the current shape 71 and the recommended line 72 of the ground that are updated and displayed in the image 51 each time excavation is performed with the attachment.
- the excavator operator can perform the work efficiently in a short time by operating the attachment while digging along the recommended line while viewing the image 51 displayed on the display device 50. .
- FIG. 6 is a diagram illustrating an image 51 displayed on the display device 50 when excavating the clay.
- the soil detection unit 34 detects the work target ground as viscous soil
- the recommended line calculation unit 35 excavates as compared with the case where the work target ground is sandy soil (FIG. 5). The recommended line is calculated so that the depth D2 is shallow (D2 ⁇ D1) and the excavation length L2 is long (L2> L1).
- the recommended line corresponding to the soil quality of the work target ground is displayed, so that, for example, the operator inserts the bucket 6 deeply into the ground more than necessary to reduce fuel consumption and the like.
- the excavation work can be carried out efficiently according to the situation.
- the current shape of the work target ground and the recommended line suitable for excavation are displayed on the display device 50 together with the current position of the bucket 6. Since the operator of the excavator only needs to execute excavation along the recommended line, the excavator operator can execute the operation efficiently even if the excavator is not skilled.
- FIG. 7 is a diagram illustrating an example of an image displayed on the display device when sandy soil is excavated for a plurality of cycles. As in FIG. 5, in the image 51 shown in FIG. 7, the bucket current position 61 indicating the current position of the bucket 6 and the current shape 71 of the work target ground are displayed by solid lines.
- the soil detection unit 34 detects the soil quality of the work target ground.
- the recommended line calculation unit 35 calculates a first recommended line that is a recommended line in the excavation work in the first cycle. Further, the recommended line calculation unit 35 calculates the angle of the bucket 6 when excavating along the first recommended line.
- the first recommended line 72 for the current shape 71 of the ground to be worked is displayed with a broken line as shown in FIG. .
- bucket excavation positions 62, 63, and 64 when excavating along the recommended line 72 are displayed as broken lines as attachment excavation positions.
- the recommended line calculation unit 35 determines whether or not the calculated first recommended line 72 is included in the vicinity range 101 of the target surface 100.
- the vicinity range 101 is set based on, for example, the excavation depth D2 for one cycle.
- the recommended line calculation unit 35 When it is determined that the calculated first recommended line 72 is not included in the neighborhood range 101, the recommended line calculation unit 35 is a recommended line for performing the excavation work in the second cycle, and is a second recommended line 73. Is calculated. When the calculation of the second recommended line 73 is completed, the recommended line calculation unit 35 determines whether or not the calculated second recommended line 73 is included in the vicinity range 101 of the target surface 100.
- the recommended line calculation unit 35 When it is determined that the calculated second recommended line 73 is not included in the vicinity range 101, the recommended line calculation unit 35 further provides a third recommendation, which is a recommended line when performing the excavation work in the third cycle. Line 74 is calculated. When the calculation of the third recommended line 74 is completed, the recommended line calculation unit 35 determines whether or not the calculated third recommended line 74 is included in the vicinity range 101 of the target surface 100.
- the recommended line calculation unit 35 adds the first and second recommended lines 73 and 74 in addition to the first recommended line 72. Is displayed with a broken line.
- the operator can easily grasp the number of cycles of excavation work until reaching the vicinity of the target surface before excavation by visually recognizing the displayed recommended line. be able to.
- the recommended line calculation unit 35 may display the target surface 100 and the vicinity range 101 together.
- the recommended line calculation unit 35 may clearly indicate the number of cycles of excavation work.
- the recommended line is calculated based on the soil quality.
- the elements used for calculating the recommended line are not limited to soil quality, and the recommended line may be calculated in consideration of elements other than soil quality.
- a recommended line is calculated in consideration of the size, shape, and position of an embedded object as an element other than soil.
- FIG. 8 is a diagram exemplifying an image displayed on the display device when excavating sandy soil with an embedded object taken into account. Similarly to FIG. 5, in the image 51 shown in FIG. 8, the bucket current position 61 indicating the current position of the bucket 6 and the current shape 71 of the work target ground are displayed by solid lines.
- the soil detection unit 34 detects the soil quality of the work target ground.
- the size, shape, and position of the buried object in the soil are registered in advance in the recommended line calculation unit 35 of the present embodiment. Then, when the soil quality is detected by the soil quality detection unit 34, the recommended line calculation unit 35 of the present embodiment calculates a recommended line based on the soil quality so as not to interfere with the embedded object.
- a recommended line 82 indicates a recommended line calculated by the recommended line calculation unit 35 based on the size, shape, and position of the buried object and the detected soil quality.
- a recommended line 72 calculated without considering the size, shape, and position of the embedded object is also shown clearly.
- the recommended line 72 calculated without considering the size, shape, and position of the embedded object interferes with the embedded object 90.
- the recommended line 82 calculated in consideration of the size, shape, and position of the embedded object does not interfere with the embedded object 90.
- the recommended line calculation unit 35 may generate an image of the embedded object 90 based on the size, shape, and position of the embedded object registered in advance and display the image on the image 51. .
- the operator turns the upper swing body 3 every cycle so that the end of the blade edge of the bucket 6 is positioned on a predetermined line.
- the recommended line calculation unit 35 of the present embodiment as an image when the excavation work such as dredging is viewed from the upper surface, a recommended line indicating the position of the end of the blade edge of the bucket 6 and the bucket excavation in each cycle. An image including the position and the turning direction (and turning angle) of the upper turning body 3 is displayed.
- FIG. 9 is a diagram showing an example of an image when the excavation work is viewed from above.
- a recommended line 72 indicating the position of the end of the blade edge of the bucket 6 is displayed in the image 51.
- a bucket current position 61 indicating the current position of the bucket 6 and a turning direction 201 around the turning center 300 with respect to the reference direction 200 of the bucket current position 61 are displayed by solid lines.
- the turning angle of the bucket current position 61 with respect to the reference direction 200 may be displayed.
- bucket excavation positions 62, 63, 64 in each cycle when excavating along the recommended line 72 are displayed by broken lines.
- the turning directions 202 to 204 around the turning center 300 with respect to the reference direction 200 of each bucket excavation position 62, 63, 64 are displayed by broken lines.
- the turning angle with respect to the reference direction 200 of each bucket excavation position 62, 63, 64 may be displayed.
- the recommended line when the excavation work is viewed from the side is displayed, so that the excavator operator performs the excavation work efficiently It becomes possible to do.
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Abstract
Description
まず、本発明の一実施形態に係るショベルについて説明する。図1は、本発明の一実施形態に係るショベルの側面図である。
上記第1の実施形態では、操作者によりアタッチメントが操作され、掘削が行われるたびに、地面の現在形状を更新するとともに、次の推奨ラインを算出し表示するものとして説明した。これに対して、第2の実施形態では、目標面近傍に到達するまでに複数サイクルの掘削作業が必要な場合に、複数サイクル分の推奨ラインを予め算出し、まとめて表示する。これにより、操作者は、あと何サイクル掘削作業を行うことで、目標面近傍に到達するのかを容易に把握することができる。
上記第1の実施形態では、土質に基づいて推奨ラインを算出するものとして説明した。しかしながら、推奨ラインの算出に用いる要素は、土質に限定されず、土質以外の要素を加味して推奨ラインの算出を行うようにしてもよい。第3の実施形態では、土質以外の要素として、埋設物の大きさ、形状、位置を加味して推奨ラインを算出する場合について説明する。
上記各実施形態では、掘削作業を側面から見た場合のバケット6の爪先の位置を推奨ラインとして表示するとともに、バケット掘削位置を表示する場合について説明した。これに対して、第4の実施形態では、掘削作業を上面から見た場合のバケット6の爪先の位置を推奨ラインとして表示するとともに、バケット掘削位置及び上部旋回体3の旋回方向(及び旋回角度)を表示する場合について説明する。
3 上部旋回体
4 ブーム
5 アーム
6 バケット
7 ブームシリンダ
8 アームシリンダ
9 バケットシリンダ
30 コントローラ
31 地形データベース更新部
32 位置座標更新部
33 地面形状取得部
34 土質検出部
35 推奨ライン算出部
50 表示装置
M1 通信装置
M2 測位装置
M3 姿勢検出装置
S1 前方カメラ
Claims (10)
- 走行動作を行う下部走行体と、
前記下部走行体に旋回自在に搭載される上部旋回体と、
前記上部旋回体に取り付けられるアタッチメントと、
作業対象の現在の地面形状を取得する地面形状取得部と、
前記地面形状取得部により取得された現在の地面形状において前記アタッチメントで掘削するのに適した推奨ラインを算出する推奨ライン算出部と、
前記作業対象の現在の地面形状及び前記推奨ラインを表示する表示装置と、を有する
ことを特徴とするショベル。 - 前記表示装置は、前記アタッチメントにより掘削が行われる度に、前記作業対象の掘削後の地面形状から前記推奨ライン算出部により算出される前記推奨ラインに更新して表示する
ことを特徴とする請求項1に記載のショベル。 - 前記推奨ライン算出部は、前記アタッチメントにより掘削された後の前記作業対象の地面形状に対する前記推奨ラインを算出する
ことを特徴とする請求項1に記載のショベル。 - 前記地面形状取得部は、撮像装置による前記作業対象の掘削部分の撮像結果及び前記アタッチメントの姿勢の推移の少なくとも一方に基づいて、前記作業対象の掘削後の地面形状を求める
ことを特徴とする請求項1に記載のショベル。 - 前記推奨ライン算出部は、掘削長さ及び掘削深さを求める
ことを特徴とする請求項1に記載のショベル。 - 前記表示装置は、前記推奨ラインに沿って掘削する前記アタッチメントの掘削位置を表示する
ことを特徴とする請求項1に記載のショベル。 - 前記推奨ライン算出部は、前記作業対象の現在の地面形状及び前記作業対象の土質に基づいて前記推奨ラインを算出する
ことを特徴とする請求項1に記載のショベル。 - 前記表示装置は、前記作業対象の現在の地面形状から、目標面に到達するまでの複数サイクル分の推奨ラインを表示することを特徴とする請求項1に記載のショベル。
- 前記表示装置は、前記推奨ライン算出部により、埋設物と干渉しない推奨ラインが算出された場合、当該算出された推奨ラインと当該埋設物を示す画像とを表示することを特徴とする請求項1に記載のショベル。
- 前記表示装置は、前記作業対象を上面から見た場合の推奨ラインと、該推奨ラインに沿って掘削する場合の前記アタッチメントの掘削位置までの前記上部旋回体の旋回方向または旋回角度とを、更に表示することを特徴とする請求項1に記載のショベル。
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WO2023190877A1 (ja) * | 2022-03-31 | 2023-10-05 | 住友重機械工業株式会社 | 支援装置、作業機械、プログラム |
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JPWO2017115810A1 (ja) | 2018-10-18 |
CN112482486A (zh) | 2021-03-12 |
EP3399111A1 (en) | 2018-11-07 |
US20180313062A1 (en) | 2018-11-01 |
US11230823B2 (en) | 2022-01-25 |
CN108431338B (zh) | 2020-12-11 |
EP3399111B1 (en) | 2020-04-15 |
US20220120058A1 (en) | 2022-04-21 |
CN108431338A (zh) | 2018-08-21 |
JP6611205B2 (ja) | 2019-11-27 |
EP3680400B1 (en) | 2021-09-22 |
EP3399111A4 (en) | 2018-12-26 |
KR20180099714A (ko) | 2018-09-05 |
EP3680400A1 (en) | 2020-07-15 |
KR102570490B1 (ko) | 2023-08-23 |
US11802393B2 (en) | 2023-10-31 |
CN112482486B (zh) | 2022-11-22 |
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