Door-in-door on tail part of carriage

Abstract

The invention discloses a door-in-door on the tail part of a carriage. The door-in-door includes a door plate, the door plate is installed on a door frame on the tail part of the carriage through a sliding block, the sliding block is connected with the door plate through a pin shaft, the door plate can be overturned with a rotating shaft as the axis, a vertical power device driving the sliding block to move up and down on the door frame is fixedly installed in the door frame, and meanwhile, a turnover power device driving the door plate to overturn is arranged at the front end of the sliding block. According to the door-in-door, design is reasonable, the structure is simple, use is convenient, the door-in-door installed on the tail part of the carriage is arranged, the door plate is reasonably designed, a cargo door capable of being opened and closed is further arranged in the door plate, the door plate can be overturned and moved up and down to facilitate loading and unloading by staff, especially the height can be adjusted, loading or unloading of high-level goods in the carriage are convenient, the door plate can drive objects to move upwards or downwards, and the inconvenienceof the staff when loading or unloading in the carriage is overcome.

Description

technical field [0001] The invention relates to a bearing plate at the rear of a carriage, in particular to a door-in-door at the rear of a carriage. Background technique [0002] The car tail lift is also called the car lifting tail lift, the car loading and unloading tail lift, the lifting tail lift, the hydraulic car tail lift, and the truck tail lift. Loading and unloading equipment. Car tailgates can be classified into: cantilever tailgates, vertical tailgates, rocker tailgates, and folding tailgates. As a vehicle-mounted loading and unloading tool, the tailgate can greatly improve the efficiency and convenience of loading and unloading. [0003] The traditional car tailgate is basically installed outside the door at the rear of the car, which is only an auxiliary material transportation effect, and cannot be used as a door. At the same time, if the power system of the car tailgate fails, the unloading will not be completed at all, thus Delay unloading, and even affe...

AI Technical Summary

Problems solved by technology

This solution belongs to the car tailgate, and is also installed on the rear end of the rear door of the carriage to realize the function of auxiliary loading or unloading. However, this device cannot directly become the carriage door, and the force borne by the lifting arm is relatively large. It is small, and at the same time, it is impossible to complete the up and down movement of the coaming. If the interior of the carriage is divided into several layers, it is very inconvenient to load and unload materials.

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