Safety circuit of engineering maintenance vehicle and system of safety circuit
A safety circuit and maintenance vehicle technology, which is applied to vehicle components, brake components, brakes, etc., can solve the problems that emergency braking cannot be implemented, and engineering maintenance vehicles cannot relieve emergency braking, etc.
Active Publication Date: 2014-04-09
ZHUZHOU ELECTRIC LOCOMOTIVE CO
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Problems solved by technology
[0005] In view of this, the present invention provides a safety circuit circuit of an engineering maintenance vehicle to overcome the failure of emergency braking in the prior art due to the failure of emergency braking when a certain device is short-circuited, or when some components are damaged. , resulting in the problem that the engineering maintenance vehicle cannot relieve emergency braking
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[0030] see figure 1 , the present invention provides a functional block diagram of a safety circuit of an engineering maintenance vehicle, which includes: a master-slave switch unit 101 , an emergency braking unit 102 , an emergency output unit 103 and a release emergency braking unit 104 .
[0031] Wherein, the master-slave transfer switch unit includes two sets of contacts, one set of contacts is connected to the positive pole of the external power supply, and the other set of contacts is connected to the negative pole of the external power supply. When the emergency button is in a pressed state or is triggered by other emergency condition logic, that is, when the preset trigger condition is met, the emergency output unit outputs the first control signal. After receiving the first control signal, the emergency braking unit controls the engineering maintenance vehicle to perform emergency braking. Relieving the emergency braking unit When some contacts in the emergency braki...
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The invention provides a safety circuit of an engineering maintenance vehicle. The safety circuit of the engineering maintenance vehicle comprises a main-and-auxiliary shift switch unit, an emergency brake unit, an emergency output unit and an emergency brake relieving unit, wherein the main-and-auxiliary shift switch unit comprises two sets of contacts, one set of contacts are connected to the positive electrode of an external power source, and the other set of contacts are connected to the negative electrode of the external power source. When an emergency button is pressed or logically triggered by other emergency conditions, the emergency output unit outputs a first control signal; the emergency brake unit controls the engineering maintenance vehicle to carry out emergency brake after receiving the first control signal; when the emergency brake unit carries out emergency brake, the emergency brake relieving unit bypasses the preset contacts to relieve emergency brake. By means of the safety circuit of the engineering maintenance vehicle, when a certain component short-circuits or other components are damaged, carrying out or relieving of emergency brake of the engineering maintenance vehicle still can be achieved.
Description
technical field [0001] The invention relates to the technical field of rail transit and engineering maintenance vehicles, and more specifically relates to a safety circuit and system of an engineering maintenance vehicle. Background technique [0002] During the operation of the engineering maintenance vehicle, if a component in the engineering maintenance vehicle fails or an emergency occurs, it will be necessary to cause the engineering maintenance vehicle to be unable to move forward. Therefore, emergency braking must be applied to the engineering maintenance vehicle. At this time, the A safety circuit is required. The so-called safety circuit is to connect all the safety switches in the locomotive in series to control the safety relay, and only when all the safety channels are connected, the safety relay is closed, and the locomotive can run with electricity. [0003] The safety circuit of the existing engineering maintenance vehicle adopts a power-off emergency braking...
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IPC IPC(8): B60T17/00
Inventor 秦庆民刘世杰颜罡黎丹龙源陈哲
Owner ZHUZHOU ELECTRIC LOCOMOTIVE CO