Adjustable supporting device

The utility model provides an adjustable supporting device. The adjustable supporting device comprises two oppositely-arranged supporting structures and a pushing device used for driving at least one supporting structure to move so as to enable the two supporting structures to be close to each other or away from each other. According to the scheme, during use, a worker can adjust the position between the two supporting structures by starting the pushing device, so that the two supporting pieces can make contact with the power arm at the same time. Through the arrangement, a supporting effect can be provided for the power arm, the power arm is prevented from shaking or shifting in subsequent welding work, and the welding efficiency and the welding precision are improved. 本实用新型提供一种可调节支撑装置，包括两相对设置的支撑结构以及用于驱动至少一支撑结构移动以使两支撑结构相互靠近或远离的推动装置。本方案在使用时，工作人员可通过启动推动装置对两支撑结构之间的位置由此使得两个支撑件能够同时接触到动力臂。通过上述设置，能够对动力臂提供支撑作用，防止动力臂在后续的焊接工作中晃动或偏移，提高焊接效率和焊接精度。