Angle cock

Abstract

The invention discloses an angle cock which comprises a cock body. A cock core capable of enabling an inner cavity of the cock body to be opened and closed is arranged in the cock body, a cock cover is arranged above the cock body, the cock core is connected with a rotary shaft in the cock cover, a stud backstop is arranged on the cock cover, one end of the rotary shaft is connected with a handle, the handle is provided with a sleeve opening corresponding to the stud backstop, and when the sleeve opening is separated away from the stud backstop, the handle is pulled to drive the rotary shaft to rotate, so that the cock core is driven to rotate in the cock body to open and close the angle cock. The cock is characterized in that a tone whistle hole is formed in the side wall, corresponding to the cock core, of the cock body, the tone whistle hole is provided with an alarm tone whistle, or connected with the alarm tone whistle through a hose, when the cock core is in the semi-opened and semi-closed state, pressure air is discharged out of the hole to generate whistle sounds to give an alarm, accidents are avoided, and the reliability of the cock is improved. A sealing gasket is additionally arranged at the connecting position of the upper portion of the cock core and the rotary shaft, the clearance of the connecting position of the upper portion of the cock core and the rotary shaft can be blocked, it is guaranteed that the pressure air cannot overflow out of the connecting position of the upper portion of the cock core and the rotary shaft and a side wall cavity, and when the cock core is at the full-opening position, the tone whistle hole is blocked, and accidental whistle sounds are avoided.

Description

technical field [0001] The invention relates to an auxiliary equipment of an air braking device for a railway vehicle, in particular to an angled cock in the air braking device for a railway vehicle. Background technique [0002] When the railway vehicles need to be connected with each other or with the locomotive, in addition to connecting the coupler, the brake air pressure pipeline must also be connected. In order to ensure that the braking state of a single vehicle in the entire train fleet is not affected, when any vehicle is unhooked, the main brake pipeline needs to use an angled cock for switching operations. For the angle plug door, there are only two correct working states: open and closed. The current angle plug door is designed with a positive notch for the switch position. When it is in the normal position, the handle falls into the notch through the sleeve to ensure 100% opening or 100% closing of the plug door. [0003] The current problem is that manual ope...

AI Technical Summary

Problems solved by technology

[0003] The current problem is that manual operation of the handle or non-operators illegally touching the knuckle plug will cause the handle to not stay in the correct state, that is, in a half-open and half-closed state, especially when the opening is insufficient and close to closing, it will increase the main force. The pressure air flow resistance of the pipeline, when many vehicles are organized, the pressure air will affect the normal flow due to the large resistance, reduce the braking wave speed, affect the braking of the train, and ease the sensitivity

Severe cases can cause braking loss of control

And braking out of control is a very big potential safety hazard for vehicles, especially trains with long formations.

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