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公开(公告)号：US11047105B2
公开(公告)日：2021-06-29
申请号：US15765750
申请日：2015-10-06
Applicant: CPAC SYSTEMS AB
Inventor： Pål Loodberg
Abstract: A control unit is provided for a work machine. The work machine includes an implement and an arrangement for determining the position and orientation of the implement. The control unit is adapted to, for at least two different orientations of the implement, perform the steps of:
determining that the implement contacts a reference surface,
determining the position of a reference point for the implement when the implement and the reference surface are in contact with each other, and
determining the position of a point on the periphery of the implement relative to said reference point by using said reference point position.-
公开(公告)号：US11041288B2
公开(公告)日：2021-06-22
申请号：US16329387
申请日：2018-02-08
Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
Inventor： Kohei Hiromatsu , Manabu Edamura , Shiho Izumi
Abstract: A hydraulic excavator acquires operation content frequency data in a designated period based on output values output from a plurality of sensors sensing parameters that serve as indicators of operation contents performed via an operation device. A storage section stores a plurality of guide screens each corresponding to one of a plurality of work patterns of the hydraulic excavator. A work identifying section searches actual result data in the storage section for actual result data that matches or is similar to the operation content frequency data acquired by the data acquiring section in terms of operation contents and frequency thereof, and that identifies a current work pattern based on a work pattern allocated to actual result data related to a result of the search. A display device displays a guide screen corresponding to the work pattern identified by the work identifying section among the plurality of guide screens.
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公开(公告)号：US11028557B2
公开(公告)日：2021-06-08
申请号：US16213806
申请日：2018-12-07
Applicant: DEERE & COMPANY
Inventor： John Mahrenholz , Brett Graham , Alex Vandegrift , Nicholas Rokusek , Christopher Meyer , Walter Henson, II , Lance R. Sherlock
Abstract: A work vehicle comprising a work vehicle control comprising a standard configuration and an updated configuration. A controller is configured to receive a geospatial positioning signal, a boom position signal, an attachment position signal, and an operator input. The controller is configured to reference a memory device and change the work vehicle control between the standard configuration and the updated configuration. The controller is configured to control an elevation of the attachment according to a grade command.
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公开(公告)号：US10995473B2
公开(公告)日：2021-05-04
申请号：US16641712
申请日：2019-01-31
Inventor： Yoshifumi Takebayashi , Hajime Yoshida , Natsuki Nakamura , Daisuke Oka
Abstract: Provided is a construction machine that can prevent a machine body from being lowered without placing a blade in a floating state when the machine body is jacked up, even if the operator performs an erroneous operation, and that can perform favorable leveling work by placing the blade in the floating state when the machine body is not jacked up. A hydraulic excavator includes a pressure sensor that detects the pressure in a bottom-side oil chamber of a blade cylinder, and a controller that switches between validation and invalidation of a floating command and a lowering command for a blade operation device. In the case where the pressure detected by the pressure sensor is less than a predetermined value, the controller switches a solenoid selector valve to an interruption position to invalidate the floating command when a forward stroke of the operation lever is equal to or more than a reference value. In the case where the pressure detected by the pressure sensor is equal to or more than the predetermined value, the controller holds the solenoid selector valve in a communication position to validate the floating command when the forward stroke of the operation lever is equal to or more than the reference value.
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公开(公告)号：US20210123208A1
公开(公告)日：2021-04-29
申请号：US16664090
申请日：2019-10-25
Applicant: Caterpillar Inc.
Inventor： Bruce R. VAHLING
Abstract: A grading machine includes a machine body, a grading blade supported by a circle, a drawbar connecting the grading blade and the circle to the machine body, and a circle drive system. The circle drive system includes a circle drive motor with a motor shaft, a gear box, a gear coupling, and a braking mechanism. The gear box is configured to engage with and rotate the circle relative to the drawbar around a circle axis. The braking mechanism is positioned between the circle drive motor and the gear coupling and is configured to selectively engage the motor shaft.
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Patent Agency Ranking
公开(公告)号：US20210123207A1
公开(公告)日：2021-04-29
申请号：US16665752
申请日：2019-10-28
Applicant: DEERE & COMPANY
Inventor： ALEX R. VANDEGRIFT , JOHN R. MAHRENHOLZ , TODD F. VELDE , BENJAMIN MORRISON , BRYAN RAUSCH , MEGAN E. MAROTZ , CHRISTOPHER J. MEYER
Abstract: A work vehicle comprising a frame supported by a ground engaging device. A boom assembly is coupled to the frame. An attachment coupler is coupled to the boom assembly. An electronic data processor is communicatively coupled to a boom actuator, an attachment coupler actuator, a boom sensor, an attachment coupler sensor, and an operator input device. A computer readable storage medium comprising machine readable instructions that, when executed by the processor, cause the processor to receive an operator input and for a tilt forward command, command the boom actuator to move the boom assembly to a frame contact position and then command the attachment coupler actuator to move the attachment coupler towards a lower position. For a tilt rearward command, command the attachment coupler actuator to move the attachment coupler towards an upper position and then command the boom actuator to move the boom assembly towards a raised position.
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公开(公告)号：US10988913B2
公开(公告)日：2021-04-27
申请号：US16282277
申请日：2019-02-21
Applicant: DEERE & COMPANY
Inventor： Brett Graham , Nilesh Kumbhar , Nicholas Rokusek , John Mahrenholz , Michael Tigges
Abstract: A work vehicle comprising a frame supported by a ground engaging device. A boom assembly is coupled to the frame. A boom cylinder is coupled to the frame and the boom assembly. An attachment coupler is coupled to a distal portion of the boom assembly. At least one tilt cylinder is coupled to the boom assembly and the attachment coupler. An attachment is coupled to the attachment coupler. The attachment comprises an attachment frame coupled to the attachment coupler. The attachment frame has a lower portion and an upper portion. A joint is coupled to the lower portion of the attachment frame and a blade. The joint has an upper surface and a lower surface positioned a distance from the surface. An angle cylinder is coupled to the lower portion of the attachment frame and a blade. A portion of the angle cylinder is positioned below the upper surface.
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公开(公告)号：US10975547B2
公开(公告)日：2021-04-13
申请号：US16213572
申请日：2018-12-07
Applicant: DEERE & COMPANY
Inventor： John Mahrenholz
Abstract: A work vehicle is disclosed. The work vehicle comprises an attachment comprising a cutting edge. The attachment is configured to move from an operating position to a dump position. An operator input device is configured to receive a grade command. A grade control system is communicatively coupled to an operator input device and configured to receive the grade command and define a cutting plane. A controller is configured to receive a boom position signal, an attachment position signal, and the grade command. The controller is configured to maintain the cutting edge on the cutting plane in both the operating position and the dump position.
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公开(公告)号：US20210102356A1
公开(公告)日：2021-04-08
申请号：US16592530
申请日：2019-10-03
Applicant: DEERE & COMPANY
Inventor： DAVID A VEASY
Abstract: A work vehicle comprising a material management system using moldboard gates. A sensor is configured to generate a signal indicative of a ground feature and a location of the ground feature. A moldboard is coupled to the work vehicle and is configured to move a ground material. A gate is coupled to the moldboard and a gate actuator is coupled to the gate. The gate actuator is configured to move the gate to an open position, a closed position, or to a position in between. A controller which is in communication with the sensor is configured to receive the signal indicative of the ground feature and the location and control the gate actuator to move the gate based on the ground feature and the location.
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公开(公告)号：US10968598B2
公开(公告)日：2021-04-06
申请号：US15658769
申请日：2017-07-25
Applicant: KOMATSU LTD.
Inventor： Kazuhiro Hashimoto , Kenjiro Shimada
IPC: E02F3/84
Abstract: A controller is configured to acquire current terrain information indicating the current terrain in the travel direction of a work vehicle. The controller is configured to generate an inclined virtual surface extending from the current position of the work vehicle. The controller is configured to decide the soil volume of the current terrain located above the virtual surface. The controller is configured to set the virtual surface in which the soil volume of the current terrain becomes a predetermined target soil volume to be a virtual design surface. The controller is configured to generate a command signal to a work implement of the work vehicle to move the work implement along the virtual design surface.
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