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公开(公告)号：US09404573B2
公开(公告)日：2016-08-02
申请号：US13874955
申请日：2013-05-01
Applicant: Caterpillar Inc.
Inventor： Timothy Hand , Ryan Harken , Robert Jackson , David Guetschow , Jeffrey Jones
IPC: F16D31/02 , F16H61/4139
CPC classification number: F16H61/4139 , F15B2211/20576 , F15B2211/20584
Abstract: A hydraulic apparatus and a method of controlling the hydraulic apparatus are disclosed. The hydraulic apparatus includes a first pump having a first fixed displacement, a second pump having a second fixed displacement, and a diverter. The diverter includes a first diverter inlet port fluidly coupled to a discharge of the second pump, a first diverter outlet port fluidly coupled to a discharge of the first pump, and a second diverter outlet port fluidly coupled to a low pressure system, the low pressure system having a fluid pressure lower than a fluid pressure of the discharge of the first pump. The diverter is operable to selectively vary fluid communication between the first diverter inlet port and either the first diverter outlet port or the second diverter outlet port based on a reference pressure.
Abstract translation: 公开了一种液压装置和控制该液压装置的方法。 液压装置包括具有第一固定位移的第一泵，具有第二固定排量的第二泵和转向器。 分流器包括流体地联接到第二泵的排出口的第一分流器入口端口，流体地联接到第一泵的排出口的第一分流器出口端口和流体地联接到低压系统的第二分流器出口端口，低压 系统具有低于第一泵的排放的流体压力的流体压力。 转向器可操作以基于参考压力选择性地改变第一转向器入口与第一转向器出口或第二转向器出口之间的流体连通。
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公开(公告)号：US20140325971A1
公开(公告)日：2014-11-06
申请号：US13874955
申请日：2013-05-01
Applicant: CATERPILLAR INC.
Inventor： Timothy Hand , Ryan Harken , Robert Jackson , David Guetschow , Jeffrey Jones
IPC: F16H61/4139
CPC classification number: F16H61/4139 , F15B2211/20576 , F15B2211/20584
Abstract: A hydraulic apparatus and a method of controlling the hydraulic apparatus are disclosed. The hydraulic apparatus includes a first pump having a first fixed displacement, a second pump having a second fixed displacement, and a diverter. The diverter includes a first diverter inlet port fluidly coupled to a discharge of the second pump, a first diverter outlet port fluidly coupled to a discharge of the first pump, and a second diverter outlet port fluidly coupled to a low pressure system, the low pressure system having a fluid pressure lower than a fluid pressure of the discharge of the first pump. The diverter is operable to selectively vary fluid communication between the first diverter inlet port and either the first diverter outlet port or the second diverter outlet port based on a reference pressure.
Abstract translation: 公开了一种液压装置和控制该液压装置的方法。 液压装置包括具有第一固定位移的第一泵，具有第二固定排量的第二泵和转向器。 分流器包括流体地联接到第二泵的排出口的第一分流器入口端口，流体地联接到第一泵的排出口的第一分流器出口端口和流体地联接到低压系统的第二分流器出口端口，低压 系统具有低于第一泵的排放的流体压力的流体压力。 转向器可操作以基于参考压力选择性地改变第一转向器入口与第一转向器出口或第二转向器出口之间的流体连通。
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公开(公告)号：US11511976B2
公开(公告)日：2022-11-29
申请号：US16594433
申请日：2019-10-07
Applicant: Caterpillar Inc.
Inventor： Curtis John Caldwell , Sean D. Lawson , Robert Jackson , Shikha Pokharel Thapa , Aaron Gnagey
Abstract: A system for determining a lifting capacity of a pipelayer is provided. The system includes a load sensor configured to generate a signal indicative of a load suspended from a lifting hook, an angle sensor configured to generate a signal indicative of an angular position of a chassis relative to ground surface, a boom position sensor configured to generate a signal indicative of a position of a boom relative to an undercarriage, and a counterweight position sensor configured to generate a signal indicative of a position of a counterweight relative to the undercarriage. The system further includes a controller configured to receive the signal from each of the load sensor, the angle sensor, the boom position sensor, and the counterweight position sensor. The controller is also configured to determine the lifting capacity of the pipelayer based, at least in part, on the received signal.
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公开(公告)号：US20210101788A1
公开(公告)日：2021-04-08
申请号：US16594433
申请日：2019-10-07
Applicant: Caterpillar Inc.
Inventor： Curtis John Caldwell , Sean D. Lawson , Robert Jackson , Shikha Pokharel Thapa , Aaron Gnagey
Abstract: A system for determining a lifting capacity of a pipelayer is provided. The system includes a load sensor configured to generate a signal indicative of a load suspended from a lifting hook, an angle sensor configured to generate a signal indicative of an angular position of a chassis relative to ground surface, a boom position sensor configured to generate a signal indicative of a position of a boom relative to an undercarriage, and a counterweight position sensor configured to generate a signal indicative of a position of a counterweight relative to the undercarriage. The system further includes a controller configured to receive the signal from each of the load sensor, the angle sensor, the boom position sensor, and the counterweight position sensor. The controller is also configured to determine the lifting capacity of the pipelayer based, at least in part, on the received signal.
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