CN201410949Y - Brake reinforced braking valve - Google Patents

Abstract

The utility model relates to a braking valve, specifically to a brake reinforced braking valve for controlling the automobile braking device, which comprises a braking valve body, a valve core positioned in the valve body and a valve rod integrated with the valve core, wherein the valve body is provided with a plurality of pipeline interfaces; the valve rod is sheathed with a spring; the valve core is a double layer piston; the area of the upper level piston is less than that of the lower layer piston; the lower end of the valve body is provided with an air valve sheathed with a flexible member; and the center of the air valve is provided with an exhaust outlet. Compared with the prior art, the utility model has the advantage of simple structure, low manufacturing cost, convenient using and high operability. is able to increase braking force in time based on the requirement when the braking capability of the braking system achieves the limit, plays the auxiliary effect to raise the braking capability, realizes instant locking and reduces the safety hidden trouble.

Description

Brake strengthens brake activation valve

Technical field

The utility model relates to a kind of brake activation valve, and specifically a kind of brake that is used for the Control of Automobile brake gear strengthens brake activation valve.

Background technology

Automobile generally adopts pneumatically operated brake, reaches the purpose of control braking strength by the size of control gaseous pressure.Though existing brake gear braking strength when anticyclonic pressure is stronger, but braking strength obviously reduces when infrabar, in case of emergency, even the brake ability of brake system reaches capacity, but can not play the effect of quick locking, influence the braking effect of automobile, have potential safety hazard.

The utility model content

The utility model is at the deficiencies in the prior art, provides a kind of brake that can in time increase braking strength to strengthen control cock.

Realize above-mentioned purpose by the following technical solutions: a kind of brake strengthens brake activation valve, comprise the brake activation valve valve body, place valve inner spool and with the into a single integrated structure valve rod of spool, valve body is provided with a plurality of pipe interfaces, is set with spring on the valve rod, and described spool is a Double decker piston, the area of upper strata piston is less than the area of lower floor's piston, and valve body lower portion is equipped with air valve, is set with elastic component on this air valve, and described air valve center is provided with exhausr port.

Compared with prior art, the utility model is simple in structure, and cost of manufacture is low, and is easy to use, in the time of can reaching capacity in the brake ability of brake system, as required, in time increase the braking strength of brake, play booster action, improve the brake ability, can realize instant locking, reduce potential safety hazard, handling strong.

Description of drawings

Fig. 1 is a cutaway view of the present utility model.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is described further.

Referring to accompanying drawing, in the present embodiment, this brake strengthens brake activation valve, its brake activation valve valve body 13 internal sleeve are equipped with spool 14, spool 14 is provided with the valve rod 15 that is structure as a whole with it, valve body 13 walls are provided with a plurality of and pipe interfaces valve body 13 internal communication, be set with spring on the valve rod 15, described spool 14 is a Double decker piston, be respectively the area of the area of upper strata piston 2 and lower floor's piston 11 and upper strata piston 2 less than lower floor's piston 11, the two is structure as a whole, and valve body 13 bottoms are equipped with air valve 7, be set with spring on this air valve 7, air valve 7 centers are provided with exhausr port 6.

The excircle of spool 14 and valve rod 15 is set with seal ring, and contacts with valve body 13 inner tight.

Be provided with on the valve body 13 and pipe interface a plurality of and its internal communication, can pass through these pipeline structures, this control cock is connected with the brake gear of automobile by ventilation flue or direct coupled form.Valve body 13 is inner be divided into spool 14 and valve rod 15 remove brake control cabin 1, the brake control cabin 10 of dying, brake application by spring chamber are died brake chamber 9, control interface 4 brakes.

Valve body 13 tops are provided with air receiver interface 12 and air feed interface 3, and this control cock can be installed on the brake system of unit automobile, also can be contained on the wheel tractor main frame and the brake system of wagon box on.When on the wagon box brake system that is connected to wheel tractor, air receiver interface 12 is connected with the air receiver of wagon box brake system; The supply air line of air feed interface 3 and wagon box brake system; When on the brake system that is connected to vehicle main frame, air receiver interface 12 usefulness plugs are shut; Air feed interface 3 is connected with the stopping brake lock control cock of main frame brake system.

Principle of work of the present utility model is:

The control gaseous of master cylinder enters in the brake control cabin 10 of dying from the brake control interface 4 of brake gear, portion forms pressure within it, when the brake control cabin 10 in-to-in pressure of dying during greater than the pressure removed in the brake control cabin 1, spool 14 moves up, and valve rod 15 moves up under the interlock effect of spool 14, open exhausr port 6, and this moment, air valve 7 was in relaxation state, it is closed condition, so just can discharge die gas in the brake chamber 9 of brake application by spring chamber, and the brake application by spring chamber of brake system is communicated with by brake application by spring chamber interface 8 and the brake application by spring chamber brake chamber 9 of dying, gas is discharged back its in-to-in spring of releasing spring brake repair room, be that push rod outwards moves, strengthened the thrust of drag chamber push rod then, strengthen the dynamics of brake.

When brake control cabin 10 gases are died in the master cylinder discharge, enter into the pressure removed in the brake control cabin 1 from air feed interface 3 greater than the pressure in the brake control cabin 10 of dying, spool 14 moves down, valve rod 15 is closed exhausr port 6, and this moment, air valve 7 was in compressive state, i.e. opening, the gas of air receiver air feed interface 5 enters the brake application by spring chamber and dies in the control cabin 9, gas enters into the brake application by spring of brake system and just compresses its in-to-in spring after indoor, and promptly push rod inwardly moves, and brake is removed.

Claims (2)

1, a kind of brake strengthens brake activation valve, comprise the brake activation valve valve body, place valve inner spool and with the into a single integrated structure valve rod of spool, valve body is provided with a plurality of pipe interfaces, is set with spring on the valve rod, it is characterized in that, described spool is a Double decker piston, and the area of upper strata piston is less than the area of lower floor's piston, and valve body lower portion is equipped with air valve, be set with elastic component on this air valve, described air valve center is provided with exhausr port.

2, brake according to claim 1 strengthens brake activation valve, it is characterized in that described spool and valve rod excircle are set with seal ring.

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