Limiting device for hopper vehicle bottom door opening and closing mechanism

Abstract

Disclosed is a limiting device for a hopper vehicle bottom door opening and closing mechanism. The limiting device comprises a push rod mechanism and a limiting mechanism. The push rod mechanism comprises a push rod body capable of moving in the horizontal direction and connected with an upper transmission shaft. The limiting mechanism is used for limiting the movement range of the push rod body to limit the rotation angle of the upper transmission shaft and further to control the opening state of a bottom door conveniently. The upper transmission shaft drives the bottom door to be opened or closed through rotation, the range of movement of the push rod mechanism in the horizontal direction is limited through the limiting mechanism, and the push rod body is connected with the upper transmission shaft, so that the rotation angle of the upper transmission shaft is limited, the opening state of the bottom door is controlled, the limiting function of the opening angle of the bottom door isrealized, wrong rotation during bottom door opening and closing is avoided, requirements for controlling the unloading flow of a hopper vehicle are met, and the unloading operation efficiency of thehopper vehicle is improved. On the premise that spare parts of an original bottom door closing system are not changed, by means of the limiting device, the extra introducing and transformation of an existing hopper vehicle can be implemented, the transformation cost is low, the time is saved, the efficiency is high, and the economic efficiency is good.

Description

technical field [0001] The invention relates to the technical field of freight vehicles, in particular to a limit device for the opening and closing mechanism of the bottom door of the hopper vehicle. Background technique [0002] At present, during the maintenance process of new railway lines or existing railway lines, ballast hopper cars are usually used to unload ballast inside and outside the track. During the use of railway track beds, the actual ballast shortage in different sections varies, and the required unloading The amount of ballast varies. It is not easy to control the unloading flow of ballast when the existing ballast hopper truck is operated by wind or manually, and only relying on the operator's experience to judge the operation is not conducive to the precise operation of the unloading amount of ballast used for line laying or repairing ballast, resulting in ballast When there is a large amount of waste or shortage, it is manually transported, and the pne...

AI Technical Summary

Problems solved by technology

[0007] 1. The transmission system of existing domestic vehicles (the upper drive shaft, pendulum block, etc. need to be changed) has been greatly changed, and it is time-consuming and labor-intensive to transform the existing hopper car. When unloading, the operator needs to bend over or squat down to adjust the ballast unloading required flow rate, and it takes a long time to adjust. Since domestic ballast hopper trucks are required to unload ballast while walking, the operator observes the amount of ballast unloading required at the bottom doors on both sides of the car while operating. Or when squatting down to adjust the amount of ballast unloading, due to the time limit, the operator can’t take care of observing the amount of ballast unloading required by the location where the vehicle is running, and the adjustment time is long and the efficiency is low, so the practicality and maneuverability of this technology are not strong. Suitable for use on my country's railway ballast hopper cars

[0008] 2. After the bottom door reaches the fully open or fully closed position, if there is a misoperation and the handwheel of the reducer is continued to be rotated with a large force, the four-bar mechanism will be deformed, and the bottom door, ballast plate or bottom door will be crushed. Deformation will have a great destructive effect on the mechanism, affecting the normal use of the bottom door and posing hidden dangers to driving safety

At present, the existing bottom door opening and closing mechanism only has the limit technology to prevent excessive opening of the middle bottom door, and there are problems such as the position cannot be adjusted when the manufacturing error is large, the process is poor, the limit point is close to the upper transmission shaft, and the limit resistance is too large, etc. shortcoming

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