Balancing supporting rod

The utility model provides a balance support bar, including sleeve subassembly, pneumatic device, elastic element, backstop piece and articulation piece, sleeve subassembly has first end portion, pneumatic device is accommodated in the sleeve subassembly, pneumatic device one end is equipped with the stud that passes through first end portion, elastic element is accommodated in the sleeve subassembly, and the both ends are prepressed by sleeve subassembly respectively, and the elastic element is equipped with the first end portion. The stop piece is connected with the stud in a threaded mode and attached to the outer side of the first end, and the hinge piece is arranged on the stud and presses the stop piece. Therefore, the hinge piece can be effectively stabilized so as to prevent the balance supporting rod from being separated during actuation. 本实用新型提供一种平衡支撑杆，包括套筒组件、气压装置、弹性元件、止挡片及铰接件，套筒组件具有第一端部，气压装置容置于套筒组件内，气压装置的一端设有穿出第一端部的螺柱，弹性元件容置于套筒组件内且两端分别被套筒组件预压，止挡片螺接螺柱而附设于第一端部的外侧，铰接件设于螺柱且紧迫止挡片；借此，能够有效地稳固铰接件以避免平衡支撑杆在作