Locking device for bottom side door of railway open wagon

Abstract

The invention relates to the technical field of railway transportation equipment, in particular to a locking device for a bottom side door of a railway open wagon. The locking device comprises a plug pin seat, a plug pin, a hanging ring seat and a hanging ring. The plug pin seat is fixed on a wagon body of the open wagon and is provided with a plug pin hole. The plug pin is provided with a transverse protruding plug pin head. The plug pin is in a tapered wedge shape and is matched with the plug pin hole. Matching surfaces between the plug pin and the plug pin hole are oblique surfaces. The inclination angle of the oblique surfaces is a self-locking angle. The hanging ring seat is located over the plug pin and is fixed on a door hinge of the open wagon. Two sides of the hanging ring seat are provided with non-concentric mounting holes. The left end and the right end of the upper portion of the hanging ring are respectively inserted into the non-concentric mounting holes of the hanging ring seat so that a dead point can exist when the hanging ring is turned upwards or downwards. The tapered-wedge-shaped plug pin has a self-locking function. The lower the plug pin is vibrated to be, the tighter the plug pin is. The plug pin is effort-saving in upward unlocking, and stepless adjustment of a door gap can be achieved. According to the locking device, the hanging ring can rotate just after the hanging ring is stressed. Consequently, the plug pin can not be unlocked by accident in the running process of the wagon and can not break away from the plug pin hole when an upper tippler turns over.

Description

technical field [0001] The invention relates to the technical field of railway transportation equipment, in particular to a locking device for a lower side door of a railway gondola car. Background technique [0002] In order to facilitate loading and unloading and cleaning, railway gondola cars are generally provided with upturning lower side doors on both sides of the car body. Each lower side door adopts 2 lower side door locking devices, and the lower side door locking devices can be divided into hasp-type locking devices and double-hap-type locking devices. [0003] The buckle iron of the hasp-type locking device rotates along the bolt center to realize the opening and locking of the car door. When locking, the buckle iron falls into the hasp seat groove by its own gravity, and its weight is 4.72kg / piece. The buckle of this kind of locking device may jump away during the movement of the vehicle and when the dumper is unloading (the vehicle will turn around 170° at this...

AI Technical Summary

Problems solved by technology

Although this kind of locking device can prevent the buckle iron from jumping away during the movement of the vehicle, it cannot prevent it from being disengaged when the dumper is unloading, and it still needs to be tied with iron wires during use.

[0005] To sum up, the lower side door locking devices in the prior art all have the problem of poor locking, and cannot simultaneously prevent the buckle from jumping away during the movement of the vehicle and when the dumper is unloading

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