Bottom door opening and closing mechanism for railway coal hopper car
A bottom door opening and closing, funnel car technology, applied in the direction of funnel cars, railway car body parts, transport passenger cars, etc., can solve the problems of the reliability of the second-level locking of the mechanism, the hidden danger of safe driving, and the high damage rate of rolling bearings. Simplify the machining process, improve the degree of commercialization, and improve the effect of sealing performance
Active Publication Date: 2015-03-18
CHINA RAILWAYS CORPORATION +1
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Problems solved by technology
Most of the coal hopper cars only have two-stage locking devices, and the operation safety is low; the connecting rod is a key part, consisting of an upper connecting rod and a lower connecting rod. During application, the root of the screw of the lower connecting rod is broken. Safe driving constitutes a certain safety hazard; the KM70 coal hopper car is an upgraded product of various types of coal hopper cars in the past. When this type of car opens the bottom door at a small curve, the connecting rod and the wheel of the bogie will interfere. Therefore, the vehicle cannot be unloaded at the small curve, and the safety hazard is relatively large. If the staff is negligent, causing the vehicle to run to the small curve with the bottom door open, the connecting rod may seriously interfere with the wheel, causing an unexpected safety accident ; There are many bearings on the lower transmission shaft, which may easily cause the jamming phenomenon of the lower transmission shaft; the installation angle of the upper and lower crank throws is related to the eccentricity of the connecting rod, which needs to be strictly controlled during installation, but it is not easy to assemble on site due to the angle The measurement and installation are very random, which has a certain impact on the reliability of the secondary locking of the mechanism; there is a phenomenon of movement when the two-way air cylinder is working; the seal of the reducer is poor, and the handwheel of the reducer is clumsy and easy to lose
Due to the long cantilever part of the input shaft of the reducer, the hand wheel assembled at the cantilever end of the input shaft has a swing phenomenon when rotating, resulting in a high damage rate of the rolling bearings supported on the upper and lower sides of the input shaft
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[0033] The specific embodiment of the present invention will be further described in conjunction with the accompanying drawings.
[0034] The structural diagram of the opening and closing mechanism of the new bottom door of the coal hopper car is shown in figure 1 , figure 2 and image 3 , using two-stage transmission, three-stage locking device, dual-purpose pneumatic and manual, consisting of reducer, two-way air cylinder, clutch fork, upper transmission shaft, third-stage locking device, upper bell crank, connecting rod, lower It is composed of crankshaft, lower transmission shaft, double lever, long and short ejector rod and lock body.
[0035]Wind, manual operation are switched by clutch shift fork 18 toggle clutches. When the wind moves, the gear 17 is driven to rotate by the rack 12 installed in front of the spinning type two-way air cylinder 11, and the rotation of the gear 17 makes the upper bell crank 4 installed on the upper transmission shaft 15 rotate, an...
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The invention belongs to the technical field of operation of railway coal hopper cars, and particularly relates to a bottom door opening and closing mechanism for the railway coal hopper car. The invention aims to improve the locking reliability of a bottom door, realize the noninterference between a connecting rod and wheels, and improve the strength and rigidity of the connecting rod. For the bottom door opening and closing mechanism, a lower transmission shaft is divided into three sections, two adjacent sections are connected through a coupling, the middle part of the coupling is supported by a low bearing, the middle part of a lower crank is in a groove structure, the lower part of the connecting rod under a completely opening state sinks in the groove of the lower crank, and a locking part comprises a three-stage locking device. The bottom door opening and closing mechanism has the beneficial effects that: the reliability of the bottom door opening and closing mechanism is improved; the strength and rigidity of the connecting rod are improved; the structures of the lower crank and the connecting rod are improved; and when the connecting rod is under an opening state, the connecting rod is not interfered with wheels of a bogie, so that the potential safety hazards existing in the railway coal hopper cars are eliminated.
Description
technical field [0001] The invention belongs to the technical field of control of a bottom door of a railway coal hopper car, and in particular relates to an opening and closing mechanism for a bottom door of a railway coal hopper car. Background technique [0002] At present, there are tens of thousands of various types of coal hopper cars operating on the railway, and the opening and closing mechanisms of the bottom doors are similar, and there are many problems. Most of the coal hopper cars only have two-stage locking devices, and the operation safety is low; the connecting rod is a key part, consisting of an upper connecting rod and a lower connecting rod. During application, the root of the screw of the lower connecting rod is broken. Safe driving constitutes a certain safety hazard; the KM70 coal hopper car is an upgraded product of various types of coal hopper cars in the past. When this type of car opens the bottom door at a small curve, the connecting rod and the wh...
Claims
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IPC IPC(8): B61D7/24B61D7/28
Inventor刘俊雷谢剑锋孙勇刘文胜
OwnerCHINA RAILWAYS CORPORATION