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公开(公告)号：US20220055872A1
公开(公告)日：2022-02-24
申请号：US17434136
申请日：2020-02-21
IPC分类号： B66C13/20 , B66C23/00 , B66C23/86 , F15B15/20 , F15B11/05 , F15B11/042 , F15B11/044
摘要： A work vehicle includes: an operation tool that is operated by an operator; and a controller that determines a target flow rate for hydraulic oil fed to a hydraulic device on a basis of the amount of operation of the operation tool. The controller calculates a bleed-off target flow rate on a basis of the flow rate of hydraulic oil fed from a hydraulic oil pump and the target flow rate for hydraulic oil fed to the hydraulic device, calculates a bleed-off throttle differential pressure on a basis of a pressure of hydraulic oil fed from the hydraulic oil pump and a pressure of hydraulic oil in a hydraulic oil tank, calculates a bleed-off target opening area on a basis of the bleed-off target flow rate and the bleed-off throttle differential pressure, and controls a hydraulic oil control valve such that the bleed-off target opening area is achieved.
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公开(公告)号：US20160119589A1
公开(公告)日：2016-04-28
申请号：US14892833
申请日：2014-05-19
申请人： TADANO LTD.
发明人： Kazuya TANIZUMI , Iwao ISHIKAWA , Kazuaki TSUDA , Hiroshi YAMAUCHI , Keisuke TAMAKI , Masayuki MUNEKIYO
CPC分类号： H04N7/183 , B66C13/16 , B66C13/46 , G06F3/0412 , G06F3/1407 , H04N5/232
摘要： There is provided a monitoring camera (32) at a tip of a boom, a monitor (70) configured to display a captured image of a hook suspended from the tip of the boom, an attitude angle calculation device (68) configured to calculate, based on hook image position information on a screen displayed on the monitor (70) and hook position information in a real space, an attitude angle of the camera, and the attitude angle calculation device (68) includes a hook position calculation unit (63) configured to calculate a hook position on the screen actually displayed on the monitor (70), a shift amount calculation unit (64) configured to calculate the distance between the hook position calculated by the hook position calculation unit (63) and a reference hook position of the hook on the screen displayed on the monitor (70) when it is assumed that the camera faces directly downward, and a camera inclination angle calculation unit (65) configured to calculate an inclination angle of the monitoring camera (32) based on the difference and a distance in a height direction from an optical axis center position of the monitoring camera (32) to the hook.
摘要翻译： 在悬臂的尖端设置有监视摄像机（32），被配置为显示从悬臂的顶端悬挂的钩的拍摄图像的监视器（70），姿态角计算装置（68） 基于在监视器（70）上显示的屏幕上的挂钩图像位置信息和实际空间中的挂钩位置信息，相机的姿态角和姿态角计算装置（68）包括钩位置计算单元（63） 被配置为计算实际显示在监视器（70）上的屏幕上的挂钩位置;移动量计算单元（64），被配置为计算由钩位置计算单元（63）计算的挂钩位置与基准钩位置 当假定相机直接朝下时，显示在监视器（70）上的屏幕上的钩子和被配置为计算监视凸轮的倾斜角度的照相机倾斜角度计算单元 基于从监视摄像机（32）的光轴中心位置到钩子的高度方向上的距离和距离的时代（32）。
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公开(公告)号：US20240217784A1
公开(公告)日：2024-07-04
申请号：US18556990
申请日：2022-03-29
发明人： Hiroshi YAMAURA , Yoshiaki SUGAI , Kazuya TANIZUMI , Hiroki ICHIKAWA , Shinji NOGUCHI , Yuji TADANO
CPC分类号： B66C23/58 , B66C23/42 , B66C2700/0371
摘要： This crane control device controls the operation of a boom and a winch and transports a load from a start point to an end point, the control device comprising: an acquisition unit that acquires position information of the start point and position information of the end point; a horizontal trajectory generation unit that, by using an optimal control theory, generates a horizontal trajectory for a distal-end part of the boom as represented by a horizontal-direction component of a straight line linking the start point and the end point; a movement trajectory generation unit that generates a trajectory of movement of the boom for transporting the load so as to follow the horizontal trajectory, and a trajectory of rotational movement of the winch; and a movement control unit that controls the boom and the winch based on the trajectory of movement of the boom and the winch.
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公开(公告)号：US20180111803A1
公开(公告)日：2018-04-26
申请号：US15558695
申请日：2016-03-17
申请人： Hiroshi YAMAURA , TADANO LTD.
发明人： Hiroshi YAMAURA , Kazuya TANIZUMI , Shinji NOGUCHI , Yuji TADANO
CPC分类号： B66C13/18 , B66C13/063 , B66C23/701 , B66C23/84
摘要： A slewing apparatus includes a control section that performs at least a slewing angular velocity pattern determination process. In the slewing angular velocity pattern determination process, the slewing angular velocity pattern is determined such that in a first interval and a second interval of a control time T that is shorter than a cycle determined by a pendulum length of a suspended load that is in a pendulum motion, a difference between a maximum angular velocity and a minimum angular velocity increases as the control time T decreases.
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