公开(公告)号：EP4403708A1

公开(公告)日：2024-07-24

申请号：EP24152253.1

申请日：2024-01-16

申请人： CNH Industrial Italia S.p.A.

发明人： CHIOCCOLA, Francesco

IPC分类号： E02F9/12 ,  E02F9/22 ,  E02F9/24

CPC分类号： E02F9/123 ,  E02F9/128 ,  E02F9/24 ,  E02F9/2296 ,  E02F9/2285 ,  E02F9/2221

摘要： A method for controlling the rotation of an upper frame (2) of a work machine (1) comprising a lower frame carrying the ground-engaging wheels or tracks that allow motion of the work machine (1) with respect to the ground, the upper frame (2), which is carried by the lower frame in a rotatable manner; and a control system (3) configured to control the rotation of the upper frame (2) the respect to said lower frame;
the control system (3) comprises a hydrostatic transmission (4) driving the upper frame (2) in rotation and provided with a hydraulic pump (6) and a hydraulic motor (10), a control stage (14) interposed between the hydraulic pump (6) and the hydraulic motor (10) and controlling the flow of the fluid fed towards the hydraulic motor (10); a pilot stage (16) connected to the control stage (14) to control its operation; and sensor means (50) to measure the pressure of the hydraulic fluid fed towards the hydraulic motor (10);
the method allows to keep the rotation speed of the upper frame (2) within the limits set out by EN 474-5 regulation.

公开(公告)号：EP3743563B1

公开(公告)日：2024-03-13

申请号：EP18902597.6

申请日：2018-01-26

发明人： SUK, Okjin ,  LEE, Chunhan

IPC分类号： E02F9/12 ,  E02F9/20 ,  E02F9/22 ,  B60T13/68 ,  B66C23/86 ,  B66C23/94 ,  F15B7/00

公开(公告)号：EP4314599A1

公开(公告)日：2024-02-07

申请号：EP22711272.9

申请日：2022-03-01

申请人： Poclain Hydraulics Industrie

发明人： BESIC, Mufid ,  ERZNOZNIK, Matej ,  DESMYTTERE, Antoine ,  JAKA, Cadez

IPC分类号： F16H61/4043 ,  F16H61/4148 ,  F16H61/433 ,  E02F9/12

公开(公告)号：EP4299840A1

公开(公告)日：2024-01-03

申请号：EP23178758.1

申请日：2023-06-12

申请人： KUBOTA CORPORATION

发明人： YUASA, Junichi

IPC分类号： E02F9/12 ,  E02F9/26

摘要： A swiveling work machine (1) includes: a swivel base (2) rotatable about a swivel axis (X) extending in an up-down direction; a working device (20) provided on the swivel base (2); a position detector (50) provided on the swivel base (2) to detect a position; and a calculator (31) to calculate an orientation (D) of the swivel base (2) based on a detected position (Pd) which is the position detected by the position detector (50), in which the calculator (31) is configured or programmed to calculate an axis position (Px) which is a position of the swivel axis (X) based on a plurality of the detected positions (Pd) obtained during rotation of the swivel base (2) about the swivel axis (X), and calculate the orientation (D) of the swivel base (2), based on the axis position (Px) and the detected position (Pd).

公开(公告)号：EP4276253A1

公开(公告)日：2023-11-15

申请号：EP23169342.5

申请日：2023-04-23

申请人： Caterpillar Inc.

发明人： ARMSTRONG, Vincent ,  CALLAWAY, Joshua ,  BRIGHT, Christopher ,  TERRY, Benjamin

IPC分类号： E02F9/12 ,  E02F9/26 ,  F16H1/10

摘要： A follower pinion apparatus (402) can include a swing gear system comprised of a swing gear (406) and a swing motor pinion (604). The follower pinion apparatus can also include a nonmetallic follower pinion (404) positioned to mesh with the swing gear and a sensor (702) configured to sense a position of the follower pinion.

公开(公告)号：EP4242383A1

公开(公告)日：2023-09-13

申请号：EP21892172.4

申请日：2021-10-19

申请人： Hyundai Doosan Infracore Co., Ltd.

发明人： LEE, Heejin ,  KIM, Youngjoon

IPC分类号： E02F9/12 ,  E02F9/20 ,  E02F9/24

摘要： Embodiments of the present disclosure relate to an excavator for detecting the rotation of an upper body and an operation method thereof. According to an embodiment, the excavator comprises: a lower body; an upper body rotatably mounted on the lower body; a sensor device configured to collect sensing information related to a rotation of the upper body relative to the lower body; and a processor electrically connected to the sensor device, wherein the processor is configured to detect occurrence of a dead zone based on the sensing information collected by the sensor device, correct the sensing information in response to detection of the dead zone occurrence, and calculate a rotation angle of the upper body based on the corrected sensing information.

公开(公告)号：EP3779062B1

公开(公告)日：2023-06-14

申请号：EP19775159.7

申请日：2019-03-25

发明人： SAKUTA, Sou

IPC分类号： E02F9/22 ,  E02F9/24 ,  E02F9/26 ,  E02F9/12 ,  E02F9/20

公开(公告)号：EP4189179A1

公开(公告)日：2023-06-07

申请号：EP21748789.1

申请日：2021-07-23

申请人： Caterpillar SARL

发明人： GORMAN, Corey Lee ,  MCNEALY, Anthony D. ,  HOSHINO, Yasumasa

IPC分类号： E02F9/20 ,  E02F9/12 ,  E02F3/43 ,  B60W20/10

公开(公告)号：EP3757298B1

公开(公告)日：2023-04-05

申请号：EP19775928.5

申请日：2019-02-06

发明人： KAMIMURA, Yusuke

IPC分类号： E02F9/24 ,  E02F3/43 ,  E02F9/20 ,  E02F9/26 ,  E02F9/12

公开(公告)号：EP4124694A1

公开(公告)日：2023-02-01

申请号：EP22150205.7

申请日：2022-01-04

申请人： Takeuchi Mfg. Co., Ltd.

发明人： OKUTANI, Shumpei ,  KOBAYASHI, Yuta ,  SHIMIZU, Koichi

IPC分类号： E02F9/12 ,  E02F9/22

摘要： A working control device comprises an operation lever for making a boom cylinder (36), an arm cylinder (37) and others work to drive a shovel apparatus (30), and a delivered oil amount control device (a controller (150)). A working oil supply source includes a first electric motor (M1) and a first hydraulic pump (P1). When the operation lever is subjected to a single operation, a number of the motor revolution based on the lever operation is set to control the first electric motor. When the number of motor revolution is less than a necessary minimum number of revolutions, the necessary minimum number is set to control the first electric motor (M1). When the operation lever is subjected to a composite operation, a total number of motor revolutions based on the lever operations is set. When the total number is less than a necessary minimum number of revolutions, the necessary minimum number is set to control the first electric motor (M1).