摘要:
Die Erfindung betrifft eine selbstfahrende Arbeitsmaschine, umfassend einen Unterwagen (12), der mit Antriebsrädern (14) versehen ist, die mittels einer Antriebseinrichtung angetrieben sind, und mit einem Oberwagen (18), der auf dem Unterwagen (12) drehbar gelagert ist und in dem ein Antriebsaggregat (30) angeordnet ist und an dem ein Ausleger (22) für ein Arbeitswerkzeug gelagert ist, dadurch gekennzeichnet, dass das Antriebsaggregat (30) einen Stromgenerator (34) antreibt, der eine Stromquelle für einen in dem Oberwagen (18) angeordneten Elektromotor (38) ist, der die Antriebseinrichtung für die an dem Unterwagen (12) angeordneten Antriebsräder (14) ist.
摘要:
The present invention relates to an emergency stop method for hybrid construction equipment and a brake control device, and more particularly, to an emergency stop method for hybrid construction equipment and a brake control device, which may confirm a failure occurrence location of the hybrid construction equipment, absorb inertial energy of the swing body using several functions for each generated failure location so as to stably stop the swing body in an emergency manner, and when the failure occurs in the hybrid construction equipment, create the brake pattern by using the swing speed or the front information, control a brake of the swing body by controlling a voltage control valve or a hydraulic valve in accordance with the created brake pattern, such that a user may smoothly stop the swing body in accordance with a desired stop speed profile.
摘要:
Provided is a slewing drive apparatus for a construction machine capable of satisfactory pump-flow-rate control regardless of change in engine speed, including a variable displacement hydraulic pump (10), a slewing motor (12), a slewing operation device (13), a control valve (14), a relief valve (20), and a pump-flow-rate control device (15, 16) that performs a relief cut control and includes: a section for detecting an engine revolution number Ne and a slewing speed of a slewing body (2, 17); a section for determining a target pump flow rate Qo that is a sum of a slewing-speed correspondence flow rate Q1 and a minimum required relief flow rate Qmin; a section for determining a target pump-tilt-angle qtg obtained by dividing the target pump flow rate Qo by the detected engine revolution number Ne; and a section for adjusting an actual pump-tilt-angle of the variable displacement hydraulic pump (10) so as to bring the actual pump-tilt-angle to the target pump-tilt-angle qtg.
摘要:
Disclosed is a hybrid-type construction machine equipped with a swing hydraulic motor 27 and a swing electric motor 25 in combination to save energy, the construction machine ensuring high operability of a swing body 20 and providing high energy efficiency. In accordance with the amount of manipulation of a swing control lever 72, the construction machine changes a rate of a torque of the swing electric motor 25 with respect to that of the swing hydraulic motor 27. The construction machine also controls a relief pressure and the torque of the swing electric motor 25 in accordance with the amount of manipulation of a swing control lever 72, a pressure of the swing hydraulic motor 27, and a rotating speed of the swing electric motor 25.
摘要:
Disclosed is a hybrid construction machine that includes a control device 80 and an auxiliary control device 88. The control device 80 switches between a hydraulic/electric complex swing mode in which, when the swing control lever device 72 is manipulated, both the electric motor 25 and the hydraulic motor 27 are driven to drive the swing structure 20 by using the sum of the torque of the electric motor 25 and the torque of the hydraulic motor 27 and a hydraulic-only swing mode in which, when the swing control lever device 72 is manipulated, only the hydraulic motor 27 is driven to drive the swing structure 20 by using only the torque of the hydraulic motor 27. The auxiliary control device 88 includes a monitoring controller that is connected to the control device 80 and to the electric motor 25 to monitor the temperature or electrical leakage in the electric motor 25 as a substitute controller for the power control unit 55 or the electrical storage device 24 when the power control unit 55 or the electrical storage device 24 is removed due to its fault.