| 摘要 |
Disclosed are a pivot control apparatus of construction equipment for reaching a desired swing angle by controlling the brake torque of a swing motor during a loading operation using an excavator, and a control method therefor. A swing control apparatus of construction equipment according to one embodiment of the present invention comprises: first and second hydraulic pumps and a pilot pump; a boom cylinder, an arm cylinder, and a bucket cylinder which are driven by the hydraulic fluid of the first and second hydraulic pumps; an operation apparatus control valve for controlling the hydraulic fluid which is supplied from the first and second hydraulic pumps to the boom cylinder, the arm cylinder and the bucket cylinder; a swing motor which is driven by the hydraulic fluid of any one of the first and second hydraulic pumps to swing an upper swinging body; a swing control valve; a swing operation lever; a direction control valve which applies a pilot pressure to the swing control valve according to the swing operation lever or a semi-automatic swing mode selection; electronic proportional variable relief valves capable of variably adjusting the relief setup pressure of the swing motor; and a controller which, when a semi-automatic swing mode is selected and the operation apparatus is actuated at the time of swing return, applies an electric signal to the variable relief valve at the outlet side, from among the electronic proportional variable relief valves, so as to increase or decrease the relief setup pressure. |
