| 摘要 |
The present invention relates to a 3-shaft type motion base having a center shaft, including: a base frame (10) fixed onto a floor of a device or a simulator, and formed therein with an accommodation part (11); three driving modules (20) radially installed at the accommodation part (11) of the base frame and spaced apart from each other in the horizontal direction; a fixing frame (30) installed at an upper portion of the driving modules (20) to fix the driving modules (20) to the base frame (10) and formed at a center thereof with a through-hole (31); a center shaft (40) installed through the through-hole (31) formed at the center of the fixing frame (30) in the vertical direction, and provided at one end thereof with a ball member (43) formed in a spherical shape; and a deck (50) coupled to an upper portion of the center shaft (40) and adjusted in an installation angle by movement of the three driving modules (20). Each of the three driving modules (20) includes: a servo-motor (21); a link (22) installed at a rotary shaft of the servo-motor (21); and a connection rod (23) connected to one end of the link (22) at a lower end thereof, and coupled to the bottom surface of the deck (50) at the other end thereof. According to the present invention, a ball-joint type center shaft is disposed at the center of the 3-shaft type motion base, so that rotation moment is prevented, thereby stably supporting the deck while easily and smoothly adjusting the installation angle of the deck, thus adaptability to various types of disturbance is obtained. |
