PNEUMATIC ANCHOR FOR VEHICLE SELF-PULLING Russian patent published in 2024 - IPC B60D1/00 E02D5/80 

FIELD: machine building.

SUBSTANCE: invention relates to self-recovery of stuck cars. Pneumatic anchor for car self-pulling comprises hard pin driven into soil, cover and piston. Pin is made in the form of a pipe threaded from the outside in the upper part of a rigid structural material. Thrusts-ledges are attached to the pipe on the side to drive the anchor into the ground. Cover with a piston threaded from inside is screwed on top of the pipe. Piston has a diameter providing sliding fit and axial movement in the pipe cavity. From above the cover is equipped with an eyebolt for attachment of the winch cable. Cover and piston have common through channel and air valve mounted in it for communication with atmosphere. Swivel with a ring is centrally attached to the piston from below. Telescopic pneumatic cylinders-hooks with the first links open on the side of the pipe cavity and the last sharpened links are rigidly built into the pipe walls from below. Ends of flexible links are attached from inside to the first links of pneumatic cylinders-hooks for their coiling before extraction, and opposite ends are fixed on the cover swivel.

EFFECT: higher bearing capacity of the anchor.

1 cl, 3 dwg