Counter-force device for restoring load box to original shape

The invention relates to a counter-force device for restoring a load box to original shape after on-site inspection of the mass of the load box, and belongs to the technical field of civil engineering. The counter-force device comprises a limiting device, a force applying device and a movable device, wherein the limiting device is used for limiting the force applying device between the top of the limiting device and the movable device, the distance between the top of the limiting device and the movable device is larger than the height, needing to be recovered, of the load box, the bottom of the limiting device is movably connected with a lower plate of the load box, the force applying device serves as a force applying part for restoring the tested load box, the movable device is arranged on the upper plate of the load box, when the force applying device is started, the force applying device presses the movable device to move downwards, the movable device drives the load box upper plate to move downwards, and