Abstract:
Sensor de desgaste y elemento de desgaste, conjunto y uso correspondientes. El sensor está destinado a un elemento de desgaste en una pala de una máquina de movimiento de tierras. El sensor comprende un circuito eléctrico sensor y por lo menos un brazo (23) alargado que se extiende en una dirección de detección que define un eje longitudinal. El brazo (23) presenta una base (25) y un extremo. El extremo se desgasta conjuntamente con el material de desgaste del elemento de desgaste. El brazo (23) comprende una pluralidad de conexiones eléctricas (27) que forman parte del circuito eléctrico sensor y que se extienden longitudes diferentes entre sí, medidas según el eje longitudinal a lo largo del brazo (23). La invención también se refiere a un elemento de desgaste de una pala de una máquina de movimiento de tierras, a un conjunto y a su uso para determinar el desgaste.
Abstract:
This invention provides to set plural test patterns in which two or more control valves are picked up from the plural control valves as diagnosis target, and there being installed a malfunction diagnosis means (47) in which the diagnosis of malfunctioned valve is applied to the test patterns as unit, and malfunction valve identification means (48) in which the malfunctioned valves are identified by checking the control valves one another, that control valves are included in the test patterns having been diagnosed whether malfunction exists or not by the malfunction diagnosis means (47).
Abstract:
A process for developing machine (100) classification systems includes using human experts to associate expected operations (278) with various machine states including drawbar pull, tool position, tool commands, gear, and ground speed, among others, to create a classification system that can be used in a particular machine (100). The classification system operates in real time to infer operations (278) such as dig, dump, travel, and push from machine (100) state inputs and logs the operations (278) for use in operational analysis and maintenance of the machine (100).
Abstract:
A hydraulic system (50) for a machine (10) is disclosed. The system includes an actuator configured to move a portion of the machine (10), a pump (58) configured to supply pressurized fluid to the actuator, an accumulator (108) fluidly coupled to the actuator, a valve (142) arrangement configured to selectively direct the fluid discharged from the actuator to the accumulator (108) for storage and to selectively direct the stored fluid from the accumulator (108) to the actuator, and a controller (100). The controller (100) is configured to determine an accumulator (108) pressure, an actuator pressure, and an operational parameter associated with an implement system (14). Further, the controller (100) is configured to determine an accumulator (108) control mode. The controller (100) determines an accumulator (108) pressure leakage rate when the accumulator (108) control mode is neutral.
Abstract:
The present disclosure relates generally to systems and methods for sensing wear in machines designed to reduce or break-down material. More particularly, the present disclosure relates to systems and methods for sensing wear of reducing elements used by excavation machines such as surface excavation machines. The present disclosure relates to a wear sensing system including a multilevel wear sensor protection system. The multi-level wear sensor protection system includes a first level of protection, a second level of protection, and a third level of protection.
Abstract:
본 발명은 펌프 합류 제어의 이상 유무를 확인한 후에, 유압펌프의 최대 유량을 제어하는 비례제어 밸브를 제어하여 펌프 최대 유량 제어를 수행하는 단계, 비례제어 밸브에서 제어된 유량펌프의 유량값을 입력받는 단계, 펌프 최대 유량 제어 시에 입력받은 유량값에 오차가 있는 경우, 오차를 확인하는 단계 및 확인된 오차에 가중치를 주어 유량값을 보상하는 단계를 포함한다. 따라서, 엔진 회전수를 다운시켜 주행 연료 소모량을 낮출 수 있으며, 또한 주행 소음을 감소시킬 수 있다.