Emergency brake valve for electric locomotive
A technology of emergency braking, electric locomotive
Inactive Publication Date: 2014-04-02
DATONG ELECTRIC LOCOMOTIVE OF NCR
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Problems solved by technology
[0005] 1. Although the existing emergency brake valve can achieve the effect of emergency braking and parking, the emergency brake valve cannot transmit the emergency braking information of the locomotive to the locomotive control system in time after the action, so it may cause the operator's instruction Mistakes occur, leading to wrong operation, causing equipment damage or even accidents
[0006] 2. The valve body of the existing emergency brake valve is made of stainless steel, the strength of the valve body is low, the maintenance period is short, and the manufacturing cost is relatively high
Method used
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Embodiment approach
[0042] As yet another preferred embodiment of the present invention, the valve body 1 is an integrally formed cast iron structure. Since the valve body 1 is made of cast iron and is formed by one-time casting, the structural strength of the valve body is improved and the manufacturing cost is reduced.
[0043] The working principle of the present invention is: as figure 1 As shown, when the electric locomotive is running normally, the gas channel 4 in the emergency brake valve body 1 and the through hole of the valve core 2 are in a closed setting, and the emergency brake valve is in a closed state. At this time, the rotating wheel 57 of the transmission mechanism just abuts against the groove 58 of the disc wheel 51 under the action of the spring 56, and the spring 56 is located at the maximum stretching position. In this way, when the spring 56 is at the maximum stretching position, the electrical connectors a and a' of the pressure switch are in a conduction state, while t...
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The invention discloses an emergency brake valve for an electric locomotive, which comprises a valve body, a valve core and a driving device, wherein a mounting hole which is communicated with a gas channel is arranged on the side wall of the valve body; the valve core is arranged in the gas channel through the mounting hole; the axis of the valve core is orthogonal with that of the gas channel; the valve core is radially provided with a communicating hole which can be communicated or closed with the gas channel; the valve core respectively extends towards two ends along the axis of the valve core via the mounting hole to the outside of the valve body and forms two extending ends; one end of the valve core is fixedly connected with the driving device; the other extending end of the valve core is connected with an emergency brake signal generation device; the driving device can be used for driving the valve core to rotate; and when the valve core rotates to the communicating hole and is communicated with the gas channel, the valve core drives the emergency brake signal generation device to act and outputs an emergency brake signal to a locomotive control system. According to the emergency brake valve disclosed by the invention, the emergency brake signal can be transmitted to the locomotive control system in time; and in addition, the emergency brake valve has the advantages of higher strength, long maintenance period and low manufacturing cost.
Description
technical field [0001] The invention relates to an emergency brake valve, in particular to an emergency brake valve for an electric locomotive with an emergency brake signal generating device switch assembly. Background technique [0002] The emergency brake valve is a widely used brake valve, especially applied to electric locomotives. The function of the emergency brake valve used for electric locomotives is to activate the emergency braking system of the locomotive, forcing the locomotive to take emergency brakes to ensure that the locomotive is stopped in the shortest time, thereby effectively avoiding traffic accidents caused by emergencies. Therefore, the emergency brake valve has become one of the requisite important parts on the electric locomotive. [0003] When in use, according to the specific requirements of different locomotive models, the emergency brake valve can be designed as a variety of models with different sizes and similar structures. At present, the ...
Claims
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IPC IPC(8): B60T15/06
Inventor 刘治国杨桂斌
Owner DATONG ELECTRIC LOCOMOTIVE OF NCR