Compartment door locking mechanism of side-door compartment

Abstract

The invention relates to a compartment door locking mechanism of a side-door compartment and belongs to the field of goods vehicles. A compartment body is provided with a compartment door body on the lateral side. Pull hooks are fixed to two ends of the lower edge of the compartment door body. Each pull hook consists of a first hook arm, a second hook arm and a hook shaft. The compartment door locking mechanism comprises a lock hook, a tension spring adjusting seat, a pull rod, a reversing device and a hydraulic device. The tension spring adjusting seat is disposed in the middle of the pull rod. One end of the pull rod, facing to the corresponding pull hook is connected with the middle of the lock hook. One end of the lock hook forms a hook head matching with a hook shaft. One end of the pull rod, facing to the reversing device, is connected with the reversing device. The reversing device is connected to a compartment floor beam and the hydraulic device. The compartment door locking mechanism is characterized by further comprising a lock hook seat. The lock hook seat is fixed to the compartment floor beam at the position corresponding to the lock hook. The lock hook seat is provided with a lock hook seat cavity. The lock hook corresponds to the inside of the lock hook seat cavity. The other end of the lock hook is connected with the lock hook seat. The compartment door locking mechanism has the advantage that the compartment door body can be reliably locked to prevent goods from coming out.

Description

technical field [0001] The invention belongs to the technical field of freight vehicles, and in particular relates to a door locking mechanism of a side-opening compartment, which is used for locking the lower edge of the side door of the compartment with the bottom beam of the compartment. Background technique [0002] Chinese Utility Model Patent Authorization Announcement No. CN2747335Y recommended "a locking mechanism for side-opening doors", which was proposed by the applicant's former name (Changshu Special Vehicle Manufacturing Factory). In this patent solution, the locking of the side door is achieved by the cooperation of the lock hook of the locking device installed on the bottom beam and the pull hook installed on the bottom edge of the side door. For details, please refer to the 11th line to the 3rd line on page 2 of the patent specification Page 2. It should be said that this patent solution can objectively reflect the technical effects of lines 4 to 5 on page ...

AI Technical Summary

Problems solved by technology

It should be said that this patent solution can objectively reflect the technical effects of lines 4 to 5 on page 2 of its specification, but it has the following disadvantages: since the upper end of the lock hook is pivotally connected to the bottom beam through a pin shaft, the middle pull rod of the lock hook can be adjusted The connecting head of the seat is hinged, and the lower end of the lock hook is formed as a lock hook head for hooking with the pull hook on the side door, so it is driven by the hydraulic device (the hydraulic device is installed on the bottom beam) for driving the locking device. When the pull rod and the lock hook are further driven by the pull rod, the stability of the lock hook is difficult to guarantee. Inside the shackle cavity of the retractor, causing locking failure

In particular, the locking of the lock hook and the drag hook is automatically locked or unlocked by a hydraulic mechanism, and since the locking position of the lock hook and the drag hook is at the intersection of the bottom beam and the bottom edge of the side door, once it is not locked, it will be locked when the vehicle is running. It will cause the side door to open automatically, causing the goods to escape out of the compartment cavity, or cause loss or damage

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