Locking Mechanism of Turning Handle for Railway Machinery Refrigerated Side Door

Abstract

The invention relates to a railway machine refrigeration side door rotating handle locking mechanism which is designed for solving the technical problems that an existing structure of the same kind is complex in operation process and poor in shock resistance and shock preventing effects. Two side door frames of a heat insulation door plank of the rotating handle locking mechanism are symmetrically provided with displacement rotating shafts. The railway machine refrigeration side door rotating handle locking mechanism is characterized in that each displacement rotating shaft is engaged with a rack section at one end of a transmission expanding rod through a displacement rotating shaft gear, and a rack section at the other end of each transmission expanding rod is engaged with a first transmission large gear in a gear cover. The transmission expanding rods stretch out through rod holes in the gear cover, and the transmission expanding rods on the two sides are located at the upper end and the lower end of the first transmission large gear correspondingly. The same rotating shaft behind the first transmission large gear is provided with a first transmission small gear, and rotating shafts of the first transmission small gear and the first transmission large gear are rotating shafts of a disc rotating handle. The first transmission small gear is engaged with a second transmission large gear, the same rotating shaft in front of the second transmission large gear is provided with a second transmission small gear, and the second transmission small gear is arranged between the transmission expanding rods at the upper end and the lower end.

Description

technical field [0001] The invention relates to a locking mechanism for a push-pull refrigeration door, in particular to a turning handle locking mechanism for a railway machinery refrigeration side door. Background technique [0002] Sliding refrigerated doors are widely used in locomotive refrigerated doors, such as refrigerated cars or railway refrigerated cars, to keep food in the car fresh. They are generally equipped with upper and lower rails, door lock bars, sliding doors, and door lock structures. For example, the application number 201520257212.8 disclosed in the Chinese patent literature, the date of authorization announcement is 2015.09.09, and the name of the utility model is "refrigerated and thermal insulation compartment sliding side door". It is characterized in that: the front wall of the door panel is provided with two door lock bars, the upper and lower ends of the door lock bar are provided with a shaft card, the midpoint of the door lock bar is respecti...

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the above-mentioned shortcomings, the object of the present invention is to provide a locking mechanism for the turning handle of the side door of railway mechanical refrigeration. In view of the complicated operation procedures of the buckle rotating locking structure on the rotating rod in the existing common locking mechanism of the same kind, Designed for the technical problems of safety, anti-vibration, and poor anti-vibration effects, the purpose is to achieve the following technical solutions

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