CN2356901Y

CN2356901Y - Automobile brake

Info

Publication number: CN2356901Y
Application number: CN 99219986
Authority: CN
Inventors: 徐大和
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-02-25
Filing date: 1999-02-25
Publication date: 2000-01-05
Anticipated expiration: 2009-02-25

Abstract

The utility model relates to an automobile brake device which can cancel a manual brake device. The automobile brake device is characterized in that gas out pipelines of a gas storage tank have two pipelines, wherein, one pipeline is communicated with a pressure chamber P of a brake valve, and the other pipeline is communicated with the pressure chamber P of a control valve, A working chamber A of the brake valve is communicated with an inlet C of one end of a shuttle valve, and the working chamber A of the control valve is communicated with an inlet D of the other end of the shuttle valve. An outlet E in the middle of the shuttle valve is communicated with each brake cylinder. The control valve is and three-way valve with two positions, wherein, one position of the control valve is the chamber P which is communicated with the chamber A, an exhaust outlet O is closed, the other position of the control valve is the chamber A which is communicated with the exhaust outlet O, and the chamber P is closed. The utility model can be used for various automobiles which brake by pressurized gas.

Description

Brake device for car

The utility model relates to a kind of Vehicular brake device, particularly a kind of brake device for car.

Current transport truck mostly adopts aerobraking, and two cover brake equipments are housed on it, and the one, by foot feed, by storage tank, brake activation valve and be contained in the service brake device that the brake cylinder in the wheel nave constitutes, another set of is the mechanical type hand brake device.In running car, generally be to use the service brake device, seldom use hand brake device, hand brake device generally is when the automobile stagnation of movement, slides usefulness voluntarily for preventing it.Because the service brake device can not brake when stagnation of movement,, be a kind of waste therefore so, can not cancel though the hand brake device degree of utilization is low.

The purpose of this utility model provides a kind of brake device for car of cancelling hand brake device.

The utility model is to realize like this, a kind of brake device for car, it has footrest mechanism and by the brake activation valve of its control and storage tank be contained in brake cylinder in the wheel nave, the pneumatic line that it is characterized in that it is: the storage tank outlet pipe has two-way, one the tunnel communicates with the pressure chamber P of brake activation valve, one the tunnel communicates with the pressure chamber P of control cock, the epitrochoidal chamber A of brake activation valve communicates with the inlet C of shuttle valve one end, the inlet D of the shuttle valve other end communicates with the epitrochoidal chamber A of control cock, and the outlet E in the middle of the shuttle valve communicates with each brake cylinder; Wherein control cock is a two position three-way valve, and its station is that the P chamber communicates with the A chamber, exhausr port O sealing, and another station is that the A chamber communicates with exhausr port O, the sealing of P chamber.

The employed control cock of the utility model is a two-position three way magnetic valve open in usual, and its power supply is controlled by multipoint switch.

When the automobile stagnation of movement, control cock is to be in the I station, and the P chamber communicates with the A chamber, exhausr port O sealing.This moment, pressurized air, entered from the inlet D of shuttle valve one end through control cock from storage tank, inlet C sealing, and gas flows out from the outlet E of centre, enters each brake cylinder, makes the car braking, prevents that it from sliding voluntarily.When the car cruising, brake activation valve is in the I station, the sealing of P chamber, and the A chamber communicates with exhausr port O, control cock is in the II station, the sealing of P chamber, and the A chamber communicates with exhausr port O, and the gas of each brake cylinder enters from the outlet E of shuttle valve, the D mouth flows out, and is discharged into atmosphere, the car brakeless from the exhausr port O of control cock.In running car, as long as with foot-operated moving stretcher, brake activation valve is converted to the II station, P chamber and A control communicates, exhausr port O sealing, pressurized air just from storage tank through brake activation valve, enter shuttle valve from the inlet C of shuttle valve one end, flow out by shuttle valve central exit E again, enter each brake cylinder, realize travelling middle braking.The inlet D of the other end of shuttle valve sealing at this moment, control cock is in the II station, the sealing of P chamber, the A chamber communicates with exhausr port O.Its braking is basic identical with now braking, so can guarantee car safety traffic braking.From the above as can be known, the utility model is travelling and stagnation of movement all can be realized failure-free braking, therefore can remove the hand brake device on the current automobile, thereby reduce cost.In addition, when the car stagnation of movement, want to steal car, not only the touch block of multipoint switch will be pulled out, overlap, the car circuit is connected, also will make control cock change station and just can.Especially when using two-position three way magnetic valve, multipoint switch and two-position three way magnetic valve are contained in the osed top can, can be fixed in the control desk or operator's compartment forearm bonnet in, more difficultly like this touch block is pulled out and made valve events, so the utility model has also improved the theftproof performance of car.The utility model can be used for various automobiles with compressed air brake, particularly various lorries.

Accompanying drawing 1 is a pneumatic diagram of the present utility model;

Accompanying drawing 2 is the utility model multipoint switch inner contact figure;

Accompanying drawing 3 is electrical schematic diagrams of the present utility model.

Below in conjunction with accompanying drawing the utility model is described in detail.

In the present embodiment, brake activation valve 2 is just the same with the brake activation valve of existing automobile, is the two position three-way valve by foot feed.When not step pedal, it is in the I station, the sealing of P chamber, and the A chamber communicates with exhausr port O, and when stepping stretcher, it is converted to the II station, and the P chamber communicates with the A chamber, exhausr port O sealing.What control cock adopted is two-position three way magnetic valve 3 open in usual.As can be seen from Figure 1, storage tank 1 outside air feed gas circuit has two-way, and one the tunnel communicates with brake activation valve 2 pressure chamber P, and one the tunnel communicates with the pressure chamber P of control cock 3.The epitrochoidal chamber A of brake activation valve 2 communicates with the inlet C of shuttle valve 4 one ends.The inlet D of shuttle valve 4 other ends communicates with the epitrochoidal chamber A of control cock 3, and middle outlet E communicates with each brake cylinder 5.Control cock 3 is in the I station when outage, this moment, the P chamber communicated with the A chamber, exhausr port O sealing; During energising, be in the II station, this moment, the A chamber communicated with exhausr port O, the sealing of P chamber.Found out on the pivoted arm 6 of multipoint switch key hole 7 is arranged by Fig. 2, the rotation of pivoted arm 6 is controlled by key, and its end and storage battery link, and the other end can slide on each contact under it.Find out that in conjunction with Fig. 3 multipoint switch has four stations: the first station is for disconnecting station, the complete neither energising of car everywhere.Control cock 3 is in the I station, the C mouth sealing of shuttle valve 4, and this moment, automobile was in the stagnation of movement braking mode; The second station, this moment, pivoted arm 6 contacted with the starter contact of outer ring and the contact of inner ring, and to starter and other consuming parts power supplies except that control cock 3, control cock 3 still is in the I station, the sealing of shuttle valve 4C mouth, automobile is in braking and starts state; Third station, this moment, pivoted arm 6 contacted with the contact of outer ring control cock 3 and the contact of inner ring, can be to control cock 3 and each the consuming parts power supply except that starter, control cock is in the II station, each brake cylinder 5 communicates with the exhausr port O of control cock 3, the C mouth sealing of shuttle valve 4, car is in the energising motoring condition; The fourth station, this moment, pivoted arm 6 contact with the inner ring contact, can power to each consuming parts except that control cock 3 and starter, and control cock 3 is in the I station, and the C mouth of shuttle valve 4 seals, and car is in the energising braking mode, for example temporary term stop etc.When multipoint switch is in third station, step stretcher, brake activation valve 2 is transformed into the II station, shuttle valve 4 conversions, the sealing of D mouth, the C mouth is opened, the pressurized air of storage tank 1 is led to four brake cylinders 5 through brake activation valve 2 and shuttle valve 4, brake, this moment, car was in the energising braking mode, braked in travelling.As long as at this moment stop to step stretcher, brake activation valve 2 is transformed into the I station, and the pressurized air in the brake cylinder 5 enters brake activation valve 2 through the C of shuttle valve 4 mouth, and O is discharged into atmosphere from its exhausr port, and car brake off state can continue to travel.

Claims

1, a kind of brake device for car, it has footrest mechanism and by the brake activation valve of its control and storage tank be contained in brake cylinder in the wheel nave, the pneumatic line that it is characterized in that it is: the storage tank outlet pipe has two-way, one the tunnel communicates with the pressure chamber P of brake activation valve, one the tunnel communicates with the pressure chamber P of control cock, the epitrochoidal chamber A of brake activation valve communicates with the inlet C of shuttle valve one end, and the inlet D of the shuttle valve other end communicates with the epitrochoidal chamber A of control cock, and outlet E same in the shuttle valve communicates with each brake cylinder; Wherein control cock is a two position three-way valve, and its station is that the P chamber communicates with the A chamber, exhausr port O sealing, and another station is that the A chamber communicates with exhausr port O, the sealing of P chamber.

2, brake device for car according to claim 1 is characterized in that the employed control cock of the utility model is a two-position three way magnetic valve open in usual, and its power supply is controlled by multipoint switch.