103 patents
Utility
Work Machine
18 Jan 24
This work machine includes: a first hydraulic cylinder and a second hydraulic cylinder that telescope a telescopic boom on the basis of hydraulic oil supply and discharge, a switching valve that is disposed on a pressure relief circuit for connecting the first hydraulic cylinder and the second hydraulic cylinder to a tank, and a control unit that causes the switching valve to connect the first hydraulic cylinder to the tank and releases the pressure in the first hydraulic cylinder when contracting or extending the second hydraulic cylinder in a condition in which the first hydraulic cylinder is contracted.
Yasuhiro FUKUMORI, Naoto KAWABUCHI
Filed: 18 Nov 21
Utility
Estimation Apparatus and Crane
21 Dec 23
Provided is an estimation apparatus for estimating a number of wound layers of a wire rope in a crane including a boom, a winch drum, and the wire rope wound around the winch drum, the estimation apparatus being mounted on the crane, the estimation apparatus including: a calculation unit that calculates a delivery length of the wire rope; a detection unit that detects a rotational amount of the winch drum; and a control unit that estimates the number of wound layers, based on a difference in the delivery length of the wire rope and a difference in the rotational amount of the winch drum between a first orientation. and a second orientation of the boom.
Shoji NISHIMOTO
Filed: 29 Mar 22
Utility
Crane, Crane Characteristic Change Determination Device, and Crane Characteristic Change Determination System
23 Nov 23
This crane is capable of transporting cargo and includes: a feedback control unit for feedback control of the crane or an object to be controlled that is a component of the crane; a learning model that has a weighting factor and learns the characteristics of the object to be controlled in real time by adjusting the weighting factor on the basis of a teacher signal including a first signal generated by the feedback control unit; and a communication control unit that transmits the weighting factor to an external device that is communicatively connected to the crane.
Yoshimasa MINAMI
Filed: 19 Oct 21
Utility
Work Vehicle
9 Nov 23
This work machine includes: a telescoping actuator that moves a first boom in the telescoping direction with respect to a second boom; an electrical drive source that is disposed in a movable portion of the telescoping actuator; a first connection mechanism that switches a connection state between the telescoping actuator and the first boom on the basis of the power of the electrical drive source; a second connection mechanism that switches a connection state between the first boom and the second boom on the basis of the power of the electrical drive source; and a control device that controls operation of the electrical drive source.
Masahide ZUSHI, Manato SHIRAI, Kazu NAGAHAMA
Filed: 21 Aug 20
Utility
Dynamic Lift-off Control Device and Mobile Crane
14 Sep 23
This dynamic lift-off control device, which is mounted on a crane having a boom and a winch for winding a wire rope and controls dynamic lift-off of a suspended load, comprises: an image-capturing unit that is installed at the tip of the boom and captures an image including a hook; and a control unit that controls a winding action of the winch and a raising action of the boom.
Shohei NAKAOKA
Filed: 28 Jul 21
Utility
Crane Position Determination Device, Mobile Crane, and Crane Position Determination Method
31 Aug 23
There is provided a crane position determination device that is to be mounted on a mobile crane, the crane position determination device including: an input unit that receives input of the working conditions of crane work; a determination unit that has a learning model and determines the placement position of the mobile crane on the basis of output from the learning model; and a notification unit that provides notification of the placement position of the mobile crane, wherein on the basis of a reward function including at least one evaluation function pertaining to the crane work, the learning model learns to output information pertaining to the optimum placement position of the mobile crane with respect to the working conditions.
Marudan KIJI
Filed: 27 Jul 21
Utility
Dynamic Lift-off Control Device, and Crane
20 Jul 23
A dynamic lift-off control device that is mounted on a crane including a boom and a winch for winding a wire rope and that controls dynamic lift-off of a suspended load, wherein: the dynamic lift-off control device comprises a load detection unit that detects a load acting on the boom, and a control unit that controls a winding action of the winch and a hoisting action of the boom; and the control unit controls the hoisting of the boom by using a control signal, which is generated on the basis of the change over time in the value detected by the load detection unit and to which a filter for attenuating a frequency component in a prescribed range, to suppress swaying of the suspended load is applied.
Yoshimasa MINAMI
Filed: 3 Jun 21
Utility
Telescopic Boom
6 Jul 23
A lightweight and high-rigidity telescopic boom in which strain during manufacturing is suppressed is disclosed.
Kenji Shimizu, Kazuhiro Kobayashi
Filed: 7 Jun 21
Utility
Guide Display Device and Crane Equipped with Same
27 Apr 23
Provided is a guide display device that prevents misidentification of the same feature as a plurality of different features or the ground surface even if an occlusion area occurs.
Iwao ISHIKAWA, Takayuki KOSAKA, Keita MASHIMA, Satoshi KUBOTA, Shigenori TANAKA, Masaya NAKAHARA, Koki NAKAHATA
Filed: 23 Mar 21
Utility
Guide Display Device and Crane Equipped with Same
6 Apr 23
The present invention provides a guide display device capable of recognizing a feature in a work area while distinguishing whether the feature is a moving body or not.
Iwao ISHIKAWA, Takayuki KOSAKA, Keita MASHIMA, Satoshi KUBOTA, Shigenori TANAKA, Masaya NAKAHARA, Koki NAKAHATA
Filed: 23 Mar 21
Utility
Guide Display Device and Crane Provided with Same
30 Mar 23
Provided is a guide display device with which incorrect recognition of a place having small features as a ground surface having no features can be suppressed in generating and updating a three-dimensional map.
Iwao ISHIKAWA, Takayuki KOSAKA, Keita MASHIMA, Satoshi KUBOTA, Shigenori TANAKA, Masaya NAKAHARA, Koki NAKAHATA
Filed: 23 Mar 21
Utility
Guide Display Device and Crane Equipped with Same
30 Mar 23
A guide display unit for a crane, wherein a data processing unit: calculates a measurement area corresponding to the measurement area of a camera; the measurement area from the viewpoint of the camera and generates a first image; performs mosaic-processing on the image captured by the camera according to the particle size of the three-dimensional map and generates a second image; performs registration processing on the first image and the second image and calculates the amount of deviation between the first image and the second image; corrects the position of a guide frame figure with respect to the image of a suspended load and a feature on the basis of the calculated amount of deviation; and overlays the guide frame figure on the images of the suspended load and the feature and displays the result on the data display unit.
Iwao ISHIKAWA, Takayuki KOSAKA, Keita MASHIMA, Satoshi KUBOTA, Shigenori TANAKA, Masaya NAKAHARA, Koki NAKAHATA
Filed: 23 Mar 21
Utility
Control Device, Terminal and Calculation Method
23 Mar 23
A control device equipped with a first acquisition unit for acquiring information pertaining to the location of the center of gravity of cargo transported by a work machine, a second acquisition unit for acquiring information pertaining to the location of a first section of the cargo which differs from the location of the center of gravity thereof, and a calculation unit for calculating information pertaining to the orientation of the cargo on the basis of the information pertaining to the location of the center of gravity of the cargo and the information pertaining to the location of the first section.
Shinsuke KANDA
Filed: 8 Mar 21
Utility
Performance Information Server, Work Machine Display Operation Application, Method for Providing Model Information, Method for Acquiring Model Information, and Model Information Acquisition System
2 Mar 23
The performance information server includes: a request acquisition unit that acquires, from a work machine display operation application operating on a terminal capable of displaying an image including a work machine, a request including a conveyance condition under which the work machine conveys a load; a storage unit that stores specification data of the work machine in mapping with model information of a work machine; a control unit that acquires model information of a work machine having a capability to convey the load under the conveyance condition by referring to the specification data; and a response presentation unit that presents a response including the model information acquired by the control unit to the work machine display operation application.
Shunsuke UENO
Filed: 4 Feb 21
Utility
Crane
2 Mar 23
This crane is provided with a counterweight which includes an engaging part, a swivel body which is configured to be capable of swiveling, and a fixing unit which is provided on the swivel body, includes an engaged part that can connect with the engaging part, and can adopt a front position and a rear position; in each of the front position and the rear position, the fixing unit and the counterweight are linked by the engaged part being arranged in a position corresponding to that of the engaging part and being connected to the engaging part.
Masanori OSHIMA
Filed: 17 Feb 21
Utility
Guide Display Device, and Crane Provided with Same
23 Feb 23
Provided is a guide display device with which it is possible to track a hung load and display guide information.
Iwao ISHIKAWA, Takayuki KOSAKA, Keita MASHIMA, Satoshi KUBOTA, Shigenori TANAKA, Masaya NAKAHARA, Koki NAKAHATA
Filed: 23 Mar 21
Utility
Work Machine Control System and Crane
29 Dec 22
This control system comprises: a signal processing unit generating a signal related to the target operating amount of an actuator; a feedback control unit that controls the actuator based on the difference between the signal related to the target operating amount and a signal related to the fed-back operating amount; a feed-forward control unit that controls the actuator based on the signal related to the target operating amount in cooperation with the feedback control unit, and learns the characteristics of the actuator by adjusting a weighting factor based on a teacher signal; and a calculation unit that calculates information related to the deflection of the work machine.
Yoshimasa MINAMI
Filed: 24 Dec 20
Utility
Power Supply Circuit for Work Machine
15 Dec 22
This power supply circuit for work machine is provided with a first switch for switching connection and disconnection of a first electrical path provided between a battery and a load which is driven with the power of the battery, and a second switch for switching connection and disconnection of a second electrical path bypassing the first switch.
Kazuya ATARASHI, Yoshikado ITASAKA
Filed: 4 Nov 20
Utility
Crane Information Display System
1 Dec 22
This crane information display system is provided with a terminal device having a camera and captures an image of a crane with the camera to obtain a camera image, said crane information display system comprising: a crane detection unit that detects the orientation of the crane in the camera image; an information processing unit that identifies the position and posture of the crane in the coordinate system of the camera image; a working capacity calculation unit that calculates the working capacity of the crane on the basis of the information relating to the crane inputted to an input unit; and an image display unit that converts the working capacity of the crane into three-dimensional image information corresponding to the position and posture of the crane, overlays the image information on the camera image, and displays the same.
Sho ONISHI
Filed: 25 Sep 20
Utility
Crane Information Display System
10 Nov 22
A crane information display system includes a terminal device having a camera, and obtains camera images by imaging, with the camera, a first information display unit that displays information. about a crane, the crane information display system including: a crane information acquisition unit that reads, from the camera images, display information of the first information display unit to acquire information about the crane; a virtual crane generation unit that generates a virtual crane image; a position/posture calculation unit that calculates, from the camera images, a position at which the virtual crane is to be disposed and a posture to be taken by the virtual crane; an information processing unit that converts the virtual crane image into an image that corresponds to the position and the posture of the virtual crane; and an image display unit that overlays and displays the virtual crane onto the camera images.
Mizuki YONEDA
Filed: 25 Sep 20