CN211061137U

CN211061137U - Device for detecting air tightness of chassis brake system of passenger car

Info

Publication number: CN211061137U
Application number: CN201921640183.8U
Authority: CN
Inventors: 张世明; 王光圣
Original assignee: Foshan City Feichi Automobile Manufacturing Co ltd
Current assignee: Foshan Feichi Automobile Technology Co.,Ltd.
Priority date: 2019-09-27
Filing date: 2019-09-27
Publication date: 2020-07-21
Anticipated expiration: 2029-09-27

Abstract

The utility model provides a device for detecting passenger train chassis braking system gas tightness, including battery, ignition switch, solenoid valve for first gas circuit, solenoid valve for second gas circuit, solenoid valve, first relay, second relay, atmospheric pressure detection module and six pipe interface for the third gas circuit, each gas circuit solenoid valve with correspond pipe interface pipeline intercommunication to with the corresponding circuit connection of relay, battery. Adopt the utility model discloses detection device can divide the modularization to implement to detect passenger train chassis braking system gas tightness detection device, is fit for extensive streamlined production mode, and detection quality, detection efficiency promote by a wide margin.

Description

Device for detecting air tightness of chassis brake system of passenger car

Technical Field

The utility model relates to a detect device of gas tightness, in particular to detect device of passenger train chassis braking system gas tightness.

Background

At present, because the chassis of the passenger car is braked by air pressure, the air tightness of a brake system pipeline directly influences the brake performance of the whole car and is closely related to the lives and properties of drivers and passengers. Therefore, the air tightness detection of a brake system pipeline of a chassis assembly is required after the manufacture of the passenger car chassis is finished, the air tightness detection of the conventional passenger car chassis brake system basically adopts a method of manually brushing and testing soap foam water and searching leakage points one by one without a professional auxiliary device, and the air tightness detection mode has the defects of laggard process, complex operation, long air tightness detection period, large error, low efficiency and the like; it is not suitable for the large-scale production capacity of the passenger car. And because there is no related detection device, tiny leakage point and atmospheric pressure decline value can't be monitored, the braking system is apt to break down and lead to the brake dumb when the passenger train leaves factory and operates, especially the gasbag pipeline atmospheric pressure seepage of gas spring passenger train chassis can lead to the automobile body to be crooked, directly influence the travelling quality of passenger train.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can be used to detect device of passenger train chassis braking system gas tightness can improve detection quality, detection efficiency by a wide margin. The utility model discloses a following scheme realizes:

a device for detecting the air tightness of a chassis brake system of a passenger car comprises a storage battery, an ignition switch, a first air circuit electromagnetic valve, a second air circuit electromagnetic valve, a third air circuit electromagnetic valve, a first relay, a second relay, an air pressure detection module and six pipeline interfaces, wherein an air inlet end and an air outlet end of the first air circuit electromagnetic valve are respectively connected with 1 pipeline interface pipeline, the air inlet end is also connected with a first air pressure meter pipeline in the air pressure detection module, the air inlet end and the air outlet end of the second air circuit electromagnetic valve are respectively communicated with 1 pipeline interface, the air inlet end is also communicated with a second air pressure meter pipeline in the air pressure detection module, and the air inlet end and the air outlet end of the third air circuit electromagnetic valve are respectively communicated with 1 pipeline interface; the normal fire B end of the ignition switch is connected with the positive electrode of the power supply of the storage battery, and the switch fire ACC end and the fire ON end of the ignition switch can be connected with the normal fire B end and can be closed; an ignition switch ACC end of the switch fire is connected with a positive end of a first relay coil, a positive electrode of an electromagnetic valve for the first gas circuit and a positive electrode of an electromagnetic valve for the second gas circuit are connected in parallel and then connected with an output power supply end of the first relay, and a negative end of the first relay coil, a negative electrode of the electromagnetic valve for the first gas circuit and a negative electrode of the electromagnetic valve for the second gas circuit are connected in parallel and then connected with a negative electrode of the storage battery; the ignition power supply ignition ON end of the ignition switch is communicated with the normal fire B end; and the negative end of the second relay coil and the negative electrode of the electromagnetic valve for the third gas circuit are connected in parallel and then connected with the negative electrode of the storage battery.

Usually, a pipeline interface connected with an air inlet end of an electromagnetic valve for a first air passage is communicated with an air inlet air source of a rear service brake system of a passenger car chassis, and a pipeline interface connected with an air outlet end of the electromagnetic valve is communicated with an output air source of the rear service brake system of the passenger car chassis; the pipeline interface connected with the air inlet end of the electromagnetic valve for the second air circuit is communicated with an air inlet source of a front vehicle braking system of the passenger vehicle chassis, and the pipeline interface connected with the air outlet end of the electromagnetic valve is communicated with an output air source of the front vehicle braking system of the passenger vehicle chassis; and the pipeline interface connected with the air inlet end of the electromagnetic valve for the third air circuit is communicated with an air inlet source of the parking brake system of the passenger car chassis, and the pipeline interface connected with the air outlet end of the electromagnetic valve is communicated with an output air source of the parking brake system of the passenger car chassis.

For more convenient device uses, still include two low atmospheric pressure alarm indicator lamps and low atmospheric pressure alarm sensor in the atmospheric pressure detects display module, the anodal and the ignition switch ACC end of indicator lamp are connected, and the negative pole of indicator lamp is connected with the one end of low atmospheric pressure alarm sensor interface, and the other end of low atmospheric pressure alarm sensor is connected with the negative pole of battery.

Compared with the prior art, when the air tightness of the passenger car chassis brake system needs to be detected, only 6 pipeline interfaces ON the detection device are required to be connected with the pipeline interface of the air brake valve of the passenger car chassis assembly and the pipeline interface of the manual valve, the ACC end of the ignition switch key controls the air tightness detection of the front and rear service brake systems, and the ON end controls the air tightness detection of the parking brake system; the method is suitable for large-scale streamlined production modes, and the detection quality and the detection efficiency are greatly improved.

Drawings

FIG. 1 schematic connection of parts of the apparatus of example 1

FIG. 2 schematic diagram of electrical control circuit connection of the device of embodiment 1

Detailed Description

The embodiment is only for illustrating one implementation of the present invention, and is not to be taken as a limiting illustration of the protection scope of the present invention.

Example 1

A device for detecting the air tightness of a chassis brake system of a passenger car is structurally and component-ally connected as shown in figure 1, and comprises a storage battery 1, an ignition switch 2, a first air path electromagnetic valve 3, a second air path electromagnetic valve 4, a third air path electromagnetic valve 5, a first relay 6, a second relay 7, an air pressure detection module 8 and six

pipeline interfaces

11, 12, 21, 22, A and B, wherein the air pressure detection module 8 comprises two air pressure meters 8-1 and 8-2 and low air pressure alarm sensors 8-a and 8-B. The pipeline of the device is connected as follows: the barometer 8-1 is connected with a low-pressure alarm sensor 8-a, and the barometer 8-2 is connected with a low-pressure alarm sensor 8-b; the air inlet end 31 of the electromagnetic valve 3 for the first air passage is connected with the pipeline interface 11, the connecting pipeline interface 11 is communicated with an air inlet source of a rear service brake system of a passenger car chassis, the air outlet end 32 of the electromagnetic valve 3 for the first air passage is connected with the pipeline interface 21, the connecting pipeline interface 21 is communicated with an output air source of the rear service brake system of the passenger car chassis, and the air inlet end 31 is further connected with a first air pressure meter 8-1 in the air pressure detection module 8 through a pipeline; an air inlet end 41 of an electromagnetic valve 4 for a second air path is connected with a pipeline interface 12, the pipeline interface 12 is communicated with an air inlet source of a front vehicle braking system of a passenger vehicle chassis, an air outlet end 42 of the electromagnetic valve 4 for the second air path is connected with a pipeline interface 22, the pipeline interface 22 is communicated with an output air source of the front vehicle braking system of the passenger vehicle chassis, and the air inlet end 41 is also communicated with a second barometer 8-2 pipeline in an air pressure detection module 8; the air inlet end 51 of the electromagnetic valve 5 for the third air path is connected with a pipeline interface A, the pipeline interface A is communicated with an air inlet source of a parking brake system of a chassis of the passenger car, the air outlet end 52 of the electromagnetic valve 5 for the third air path is connected with a pipeline interface B, and the pipeline interface B is communicated with an output air source of the parking brake system of the chassis of the passenger car.

The electric appliance control circuit of the device is connected as shown in figure 2: the normal fire B end of the ignition switch 2 is connected with the positive circuit of the storage battery 1, and the positive end of the storage battery 1 is also connected with the input ends of the first relay and the second relay; the ACC end of the ignition switch is connected with the positive end of a coil of a first relay 6, the positive electrode of a solenoid valve 3 for a first gas circuit and the positive electrode of a solenoid valve 4 for a second gas circuit are connected in parallel and then connected with the output power supply end of the first relay 6, the negative end of the coil of the first relay 6, the negative electrode of the solenoid valve 3 for the first gas circuit and the negative electrode of the solenoid valve 4 for the second gas circuit are connected in parallel and then connected with the negative electrode of a storage battery 1, and the output ends of the relays 6 are connected in parallel and then respectively supply power to the positive; the ON end of the ignition power supply of the ignition switch 2 is supplied with power by the B end of the ignition switch 2 and is connected with the positive end of the coil of the second relay 7, the positive end of the electromagnetic valve 5 for the third gas circuit is connected with the output power supply end of the second relay 7, and the negative end of the coil of the second relay 7 and the negative end of the electromagnetic valve 5 for the third gas circuit are connected in parallel and then are connected with the negative electrode of the storage battery 1; the negative pole of a first low-pressure alarm indicator lamp 8-3 of the air pressure detection module 8 is connected with one end of a plug-in connector of a low-pressure alarm sensor 8-a, the negative pole of a second low-pressure alarm indicator lamp 8-4 is connected with one end of a plug-in connector of a low-pressure alarm sensor 8-b, the other end of the sensor is connected with the negative pole of a storage battery, and the positive poles of the indicator lamps 8-3 and 8-4 are connected with the ACC end of the ignition switch 2 after being connected in parallel;

when the air tightness of a chassis brake system of a passenger car needs to be detected, pipeline interfaces (11/21, 12/22 and A/B) on the detection device are connected with pipeline interfaces (11/21 and 12/22) of an air brake valve of a chassis assembly and a pipeline interface (A/B) of a manual valve; an air inlet of the passenger car chassis assembly is externally connected with compressed air, and air tightness detection is carried out on the brake system after the dryer exhausts air. During detection, the ignition switch 2 is switched to the ACC end, the service braking system controls the relay to output power, the air path control electromagnetic valves of the front braking system and the rear braking system are electrified, and the control pipelines of the front braking system and the rear braking system are connected with an air source; and the ignition switch is switched to the ON end, the parking braking system controls the relay to output a power supply, the air path control electromagnetic valve of the parking braking system is electrified, and the control pipeline of the parking braking system is communicated with an air source. The barometer on the device is observed visually, the pressure change condition is observed, if the pressure is not reduced, the low-pressure alarm indicator lamp cannot be lightened, and the air tightness of the brake system pipeline of the chassis assembly is qualified. If the pressure of the air pressure gauge is reduced, the low-air-pressure alarm indicator lamp is lightened, and the air tightness of the brake system pipeline of the chassis assembly is unqualified. And testing the system module with the air tightness problem, brushing soap foam water on the pipeline joint of the system module, searching a leakage point and eliminating leakage hidden danger.

Claims

1. The utility model provides a device for detecting passenger train chassis braking system gas tightness which characterized in that: the ignition circuit comprises a storage battery, an ignition switch, a first air circuit electromagnetic valve, a second air circuit electromagnetic valve, a third air circuit electromagnetic valve, a first relay, a second relay, an air pressure detection module and six pipeline interfaces, wherein an air inlet end and an air outlet end of the first air circuit electromagnetic valve are respectively connected with 1 pipeline interface pipeline, the air inlet end is also connected with a first air pressure gauge pipeline in the air pressure detection module, an air inlet end and an air outlet end of the second air circuit electromagnetic valve are respectively communicated with 1 pipeline interface, the air inlet end is also communicated with a second air pressure gauge pipeline in the air pressure detection module, and an air inlet end and an air outlet end of the third air circuit electromagnetic valve are respectively communicated with 1 pipeline interface; the normal fire B end of the ignition switch is connected with the positive electrode of the power supply of the storage battery, and the switch fire ACC end and the fire ON end of the ignition switch can be connected with the normal fire B end and can be closed; an ignition switch ACC end of the switch fire is connected with a positive end of a first relay coil, a positive electrode of an electromagnetic valve for the first gas circuit and a positive electrode of an electromagnetic valve for the second gas circuit are connected in parallel and then connected with an output power supply end of the first relay, and a negative end of the first relay coil, a negative electrode of the electromagnetic valve for the first gas circuit and a negative electrode of the electromagnetic valve for the second gas circuit are connected in parallel and then connected with a negative electrode of the storage battery; the ignition power supply ignition ON end of the ignition switch is communicated with the normal fire B end; and the negative end of the second relay coil and the negative electrode of the electromagnetic valve for the third gas circuit are connected in parallel and then connected with the negative electrode of the storage battery.

2. The apparatus for testing the airtightness of a chassis brake system for a passenger car according to claim 1, wherein: the air pressure detection module further comprises two low-air-pressure alarm indicator lamps and a low-air-pressure alarm sensor, the positive pole of each indicator lamp is connected with the ACC end of the ignition switch, the negative pole of each indicator lamp is connected with one end of the corresponding low-air-pressure alarm sensor plug interface, and the other end of each low-air-pressure alarm sensor is connected with the negative pole of the corresponding storage battery.