CN2762095Y

CN2762095Y - Brake pipeline system of automobile brake performance testing

Info

Publication number: CN2762095Y
Application number: CN 200420012760
Authority: CN
Inventors: 黄朝胜; 商艳春; 凌启胜
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2004-11-24
Filing date: 2004-11-24
Publication date: 2006-03-01
Anticipated expiration: 2014-11-24

Abstract

The utility model relates to a brake pipeline system for automobile brake performance testing, wherein an auxiliary air cylinder and a brake valve are provided with auxiliary braking systems; ports I of the auxiliary braking systems are connected with two electromagnetic valves in parallel; the electromagnetic valves is connected with a gear selection switch; the electromagnetic valve A is connected with a shuttle valve; the shuttle valve C is provided with VI of a port V; the electromagnetic valve F is connected with a relay valve and the shuttle valve; the port of the shuttle valve is connected with ports III and IV of an auxiliary alternative system; a port of the relay valve is connected with a port II of the auxiliary alternative system; the brake valve is connected with the ports III and V of the shuttle valve; a port VII is connected with the gear selection switch. The utility model can realize to supply the air for a brake in the certain direction and quantity, omits the troubles of repeated disassembly and seal and improves test efficiency. Because the braking air is not lost, the utility model has more reliable testing data and controls testing accuracy better.

Description

Automobile brake perfrmance test brake piping system

Technical field:

The utility model relates to a kind of automobile brake perfrmance and tests the brake piping system, is mainly used in automobile brake perfrmance experiment field, and it can substitute former car brake system and finish every automobile brake perfrmance experiment work.

Background technology:

At present when carrying out the automobile brake perfrmance test, need do certain technical finesse to the corresponding component in the brake system of car, for example, when carrying out the braking force distribution of automobile test detent on each vehicle bridge of automobile was successively lost efficacy, our way in the past is exactly a breakaway braking device and being connected of energy transmission lines, this just need repeatedly dismantle the brake piping system, shutoff, and every change single test project all will be done once dismounting, shutoff, the low labour intensity of test efficiency is also very big, and because when the pressure of braking in the air drum is higher than certain value, before, back braking air drum is interconnected, so when pressure is higher than this value, before, braking inflator in back can compensate mutually, can't obtain the brake pressure of expecting accurately, makes test accuracy be difficult to control.The actual conditions of automobile brake perfrmance test have determined, under the prerequisite that does not have special equipment, when carrying out the automobile brake perfrmance test, can only adopt to the brake piping system dismantle, the way of shutoff.Pilot project of every like this replacing will once be dismantled the envelope degree.Test efficiency is quite low, and labour intensity is also very big.Some test can't reach certain degree of accuracy because of limited on the research technique especially, even can't realize.

Summary of the invention:

The purpose of this utility model is to provide a kind of automobile brake perfrmance to test the brake piping system, installs a cover EBA on former car brake system additional, realizes the quantitative control to vehicle brake pipeline pressure; Can make test pipeline pressure control simply accurate, test accuracy is well controlled, and has improved test capability, test accuracy and test efficiency; The security of instruction carriage also is greatly improved; In parallel with the brake piping of former car, work is independent of each other, reliable operation, high safety.

The technical solution of the utility model is achieved in that automobile brake perfrmance test brake piping system, be connected with brake valve on the air drum of front and back, back air drum is connected with pressure regulator valve and auxiliary air drum, wherein on auxiliary air drum and brake valve, EBA is installed, be connected with two solenoid valves on the port I of EBA side by side, be connected with Gear Select Switch on the solenoid valve, be connected with shuttle valve on the solenoid valve A; Have port V and VI on the shuttle valve, solenoid valve F is connected with relay valve and shuttle valve and picks out auxiliary alternative system port III and IV on the shuttle valve port; Pick out auxiliary alternative system port II on the relay valve port, brake valve links to each other with port III and port V on the shuttle valve, and port VII links to each other with driving switch.

Good effect of the present utility model is to realize to the detent orientation, quantitative air feed, thereby whether the work of control brake device that can be random, saved dismounting repeatedly, the trouble of shutoff has improved test efficiency greatly, and because the loss of not braking gas, make test figure more reliable, the test accuracy has obtained better control.Make process of the test become simple, and can carry out the test of fixed tube road pressure test, braking force distribution, maximum braking force test, decide Multitests such as deceleration test, temperature sensitivity test, speed sensitivity test, part pipeline failure test, energy storage device test.

Description of drawings:

Fig. 1 is a schematic diagram of the present utility model;

Fig. 2 is a structure principle chart of the present utility model;

Air drum, the preceding air drum of i, the auxiliary air drum of c, b pressure regulator valve, d EBA, e brake valve, f, g brake chamber, h relay valve, A, F solenoid valve, B driving switch, C, D shuttle valve, E relay valve behind a.

Embodiment:

Below in conjunction with accompanying drawing the utility model is further described, as shown in Figure 1, 2, air drum a such as Fig. 1 give system's air feed behind the vehicle, control the gaseous tension of assisting in air drum c such as Fig. 1 by pressure regulator valve b such as Fig. 1, auxiliary air drum c is connected with the port I of backup system such as Fig. 2, gives solenoid valve A, F such as Fig. 2 air feed of backup system by port one.The laboratory technician can open the solenoid valve energising that links to each other with the detent that needs the supply system to take offence by the control selector switch as required, makes the supply air line conducting.To assist gaseous tension in the air drum to be adjusted to the brake-pipe pressure of setting then, and with this pressure as pilot piping pressure feed relay valve, supply with the detent brake gas by relay valve, impel detent work, produce the braking of certain intensity.So just realized just can realizing the braking of varying strength to brake chamber level pressure power air feed.The laboratory technician can carry out following four kinds of operations according to the control intention:

1, former car braking: port 21 gases of brake valve e such as Fig. 1 by backup system port III (being 12 ports among shuttle valve D such as Fig. 2), port IV (being 2 ports among shuttle valve D such as Fig. 2) enter preceding brake chamber g such as Fig. 1; The port V (be in shuttle valve C such as Fig. 2 12 ports) of port 22 gases of brake valve e such as Fig. 1 by backup system, port VI (being 2 ports among shuttle valve C such as Fig. 2) enters relay valve h such as Fig. 1 controls gas port 4, thereby actuates back brake chamber f such as Fig. 1.

2, backup system front axle brake: the laboratory technician selects preceding braking by Gear Select Switch B such as Fig. 2, connect solenoid valve F such as Fig. 2, auxiliary air drum gas is connected with control port 4 with relay valve E such as Fig. 2 through solenoid valve, realization is to the control of relay valve output port 2 pressure, relay valve port 2 output gases are realized front axle brake through brake chamber g such as Fig. 1 before 11 ports, 2 ports enter among shuttle valve D such as Fig. 2.

3, backup system rear axle braking: the laboratory technician selects the back braking by Gear Select Switch B such as Fig. 2, connect solenoid valve worker A such as Fig. 2, auxiliary air drum gas is connected with rear axle relay valve h such as Fig. 1 control port 4 through 11 ports, 2 ports among solenoid valve and shuttle valve C such as Fig. 2, realization is to the control of relay valve output port 2 pressure, thereby actuates back brake chamber f such as Fig. 1 realizes front axle brake.

4, backup system antero posterior axis braking: realize in the time of above-mentioned 2,3.

Because adopt shuttle valve to be connected in parallel, above-mentioned 1 operating mode and other operating modes can be carried out simultaneously, do not conflict mutually.In process of the test, the laboratory technician can be adjusted to predetermined value with the gaseous tension in the auxiliary air drum as required, thereby realizes the braking of varying strength.

Claims

1, automobile brake perfrmance test brake piping system, be connected with brake valve on the air drum of front and back, back air drum is connected with pressure regulator valve and auxiliary air drum, it is characterized in that: on auxiliary air drum (c) and the brake valve (e) EBA (d) is installed, be connected with two solenoid valves (A), (F) on the port I of EBA (d) side by side, be connected with Gear Select Switch (B) on solenoid valve (A), (F), be connected with shuttle valve (C) on the solenoid valve (A); Have the VI of port V on the shuttle valve (C), solenoid valve (F) is connected with relay valve (E) and shuttle valve (D), and picks out auxiliary alternative system port III and VI on shuttle valve (D) port; Pick out auxiliary alternative system port II on relay valve (E) port, brake valve (e) links to each other with port III and port V on the shuttle valve (D), and port VII links to each other with driving switch.