A towing hook device

Abstract

The invention belongs to the technical field of automobile components and provides a draw hook device.The draw hook device comprises a base body and a hook body which are connected to a frame.The base body is provided with an opening.The hook body is rotationally connected to the base body in the direction of closing or opening the opening around a first pin shaft.The draw hook device further comprises a self-locking drive mechanism for driving the hook body to rotate.The self-locking drive mechanism is arranged between the base body and the hook body.The self-locking drive mechanism drives the hook body to close or open the opening of the base body, the hook body can be self-locked after closing the opening, a drawn object is prevented from being separated from the hook body, untight sealing, caused by the fact that the drawn object is too heavy or the hook body becomes lighter, of the hook body and the base body is avoided, connection reliability of the drawn object and the hook body is improved accordingly, drawing is smoothly conducted, and safety accidents caused by drawing are reduced.

Description

technical field [0001] The invention belongs to the technical field of automobile parts, and in particular relates to a towing hook device. Background technique [0002] Medium- and heavy-duty special vehicles need to be equipped with a towing device to realize the towing of trailers and other towed equipment. The existing towing device generally installs a towing hook on the beam at the rear of the frame. The towing hook usually includes a lock and a rotating hook body. The body is closed and locked with the buckle through the action of gravity. This structure relies on gravity to achieve closure. Since the driving force mainly comes from the gravity of the hook body, if the towed object is too heavy, or the weight of the hook body becomes lighter due to long-term outdoor wear, it is easy to cause the hook body and the buckle to not close tightly. Thereby, the reliability of the towing connection is reduced, leading to towing failure, and in severe cases, a safety accident...

AI Technical Summary

Problems solved by technology

This structure relies on gravity to achieve closure. Since the driving force mainly comes from the gravity of the hook body, if the towed object is too heavy, or the weight of the hook body becomes lighter due to long-term outdoor wear, it is easy to cause the hook body and the buckle to not close tightly. As a result, the reliability of the towing connection is reduced, leading to towing failure, and in serious cases, it will cause a safety accident

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