CN221224251U - Tread brake unit testing arrangement - Google Patents
Tread brake unit testing arrangement Download PDFInfo
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- CN221224251U CN221224251U CN202323043104.4U CN202323043104U CN221224251U CN 221224251 U CN221224251 U CN 221224251U CN 202323043104 U CN202323043104 U CN 202323043104U CN 221224251 U CN221224251 U CN 221224251U
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- 238000012360 testing method Methods 0.000 title claims abstract description 61
- 230000001105 regulatory effect Effects 0.000 claims abstract description 40
- 238000009434 installation Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 4
- 238000001514 detection method Methods 0.000 abstract description 13
- 230000000875 corresponding effect Effects 0.000 description 10
- 238000009661 fatigue test Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000565 sealant Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model belongs to the technical field of rail transit, and discloses a device which comprises a pressure maintaining valve communicated with an air source, wherein the pressure maintaining valve is respectively connected with a parking pressure regulating valve and a BC pressure regulating valve through an air passage, the parking pressure regulating valve is sequentially connected with a parking sensor and a parking electromagnetic valve through the air passage, the BC pressure regulating valve is connected with the BC sensor through the air passage, and the BC sensor is respectively connected with a BC1 electromagnetic valve and a BC2 electromagnetic valve through the air passage. The tread braking unit testing device provided by the utility model can complete the testing of the tread braking unit on an electric bus, realize the test of the tread braking unit without getting off, and find out the failure cause through the test; and qualified detection can be carried out after the fault part is maintained, so that repeated disassembly and assembly of the tread braking unit are avoided.
Description
Technical Field
The utility model belongs to the technical field of rail transit, and particularly relates to a tread braking unit testing device.
Background
Tread braking: also called brake shoe braking, which is a braking mode adopted by railway rolling stock, urban rail vehicles and the like, forms friction through a friction pair between a tread and a brake shoe to generate braking action, and is a braking mode for converting kinetic energy into heat energy. When the train brakes, the brake cylinder charges air to push the brake shoe to press the tread, and the kinetic energy of the train is converted into heat energy by utilizing the friction force between the brake shoe and the tread to be dissipated in the atmosphere.
The tread braking unit is one of core components of a brake system of the electric bus, the failure rate of the tread braking unit rises year by year along with the increase of the service life of the electric bus, and a conventional treatment method is adopted after the failure occurs, so that the failed tread braking unit is detached and then is mounted on an existing tread braking unit test bed for corresponding detection. The detection items comprise: and (3) air seal detection, sensitivity detection, adjustment quantity detection, release detection and output force detection. Through detection, fault points are found out and corresponding maintenance is carried out, then the tread braking units after maintenance are installed on a test bed again for detection, and loading is carried out after the detection is qualified. The tread braking unit has the weight of 64kg, the space of the installation position is limited, the assembly and the disassembly are difficult, and each 4 persons can spend more than 3 hours for assembling and disassembling one tread braking unit at a time. The joint of the tread braking unit is required to be sealed by using sealant, and the sealant must be kept stand for more than 12 hours after being smeared, so that the buckling and repairing time is long, and the utilization rate of the electric bus is reduced.
Disclosure of utility model
The present utility model aims to solve the above technical problems at least to some extent. Therefore, the utility model aims to provide a tread braking unit testing device.
The technical scheme adopted by the utility model is as follows:
the tread braking unit testing device comprises a pressure maintaining valve communicated with an air source, wherein the pressure maintaining valve is respectively connected with a parking pressure regulating valve and a BC pressure regulating valve through an air passage, the parking pressure regulating valve is sequentially connected with a parking sensor and a parking electromagnetic valve through the air passage, the BC pressure regulating valve is connected with the BC sensor through the air passage, and the BC sensor is respectively connected with the BC1 electromagnetic valve and the BC2 electromagnetic valve through the air passage.
Preferably, the pressure maintaining valve, the parking electromagnetic valve, the BC1 electromagnetic valve and the BC2 electromagnetic valve are all connected with a quick connector, and a sealing head is detachably arranged on the quick connector.
Preferably, the tread brake unit testing device further comprises a mounting cabinet, wherein the pressure maintaining valve, the parking pressure regulating valve, the BC pressure regulating valve, the parking sensor, the parking electromagnetic valve, the BC sensor, the BC1 electromagnetic valve and the BC2 electromagnetic valve are all arranged in the mounting cabinet, and the quick connector is arranged on the surface of the mounting cabinet. Four movable wheels are arranged at the bottom of the installation cabinet.
Preferably, the installation cabinet is provided with a PLC integrated machine, and the PLC integrated machine is respectively and electrically connected with the parking sensor, the parking electromagnetic valve, the BC sensor, the BC1 electromagnetic valve and the BC2 electromagnetic valve. The parking sensor and the BC sensor are both air pressure sensors.
Preferably, the tread braking unit testing device further comprises a three-way joint for connecting the parking solenoid valve, the BC1 solenoid valve and the BC2 solenoid valve.
The beneficial effects of the utility model are as follows:
The tread braking unit testing device provided by the utility model can complete the testing of the tread braking unit on an electric bus, realize the test of the tread braking unit without getting off, and find out the failure cause through the test; and qualified detection can be carried out after the fault part is maintained, so that repeated disassembly and assembly of the tread braking unit are avoided.
Drawings
FIG. 1 is a schematic air circuit diagram of a tread brake unit testing device of the present utility model.
FIG. 2 is a schematic view of a tread brake unit testing apparatus of the present utility model.
FIG. 3 is a partial schematic view of the tread brake unit of the present utility model.
In the figure: 1-installing a cabinet; 2-moving wheels; 3-touching the display screen; 4-parking the pressure regulating knob; 5-BC pressure regulating knob; 6-quick connector; 7-a power interface; 8-power indication.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements.
The utility model will be further described with reference to the drawings and specific examples.
As shown in fig. 1 and 2, a tread brake unit testing device of the present embodiment includes a pressure maintaining valve communicated with an air source, the pressure maintaining valve is respectively connected with a parking pressure regulating valve and a BC pressure regulating valve through an air path, the parking pressure regulating valve is sequentially connected with a parking sensor and a parking electromagnetic valve through the air path, the BC pressure regulating valve is connected with the BC sensor through the air path, and the BC sensor is respectively connected with a BC1 electromagnetic valve and a BC2 electromagnetic valve through the air path.
The pressure maintaining valve, the parking electromagnetic valve, the BC1 electromagnetic valve and the BC2 electromagnetic valve are connected with the quick connector 6, and the quick connector is detachably provided with a sealing head for dust prevention. The quick connector of the pressure maintaining valve is an air source port, the quick connector of the parking electromagnetic valve is a parking pipe interface, and the quick connectors of the BC1 electromagnetic valve and the BC2 electromagnetic valve are BC pipe interfaces; the quick connector is selected from the quick connector APC12-2 and APC12-3.
The air spring air circuit test port is used as an air source air taking port and connected with a quick connector of the pressure maintaining valve, the parking pressure regulating valve is used for regulating the parking air pressure, the BC pressure regulating valve is used for regulating the BC air pressure, and the parking pressure regulating valve and the BC pressure regulating valve are selected from Adke AR2000 manual pressure regulating valves.
The pressure maintaining valve is used for opening and closing a wind source so as to realize the test functions of the air tightness of a device pipeline and the air tightness of each cylinder of the tread braking unit, the pressure maintaining valve is a Adenop two-position normally-closed electromagnetic valve 2V130-10, the parking electromagnetic valve, the BC1 electromagnetic valve and the BC2 electromagnetic valve are respectively used for opening and closing corresponding air paths, and the parking electromagnetic valve, the BC1 electromagnetic valve and the BC2 electromagnetic valve are respectively a Adenop two-position three-way normally-closed electromagnetic valve 3V110-08NC.
The parking sensor and the BC sensor are both air pressure sensors, the air pressure sensors are used for detecting air pressure of corresponding air paths, the measuring range of the air pressure sensors is 0-1.0MPa, and the pressure testing requirement of the tread braking unit of the electric bus is met.
The tread brake unit testing device further comprises an installation cabinet 1, a pressure maintaining valve, a parking pressure regulating valve, a BC pressure regulating valve, a parking sensor, a parking electromagnetic valve, a BC sensor, a BC1 electromagnetic valve and a BC2 electromagnetic valve are all arranged in the installation cabinet 1, four quick connectors 6 and a power interface 7 are arranged on the surface of the installation cabinet 1, and a touch display screen 3, a power indication 8, a parking pressure regulating knob 4 of the parking pressure regulating valve and a BC pressure regulating knob 5 of the BC pressure regulating valve are arranged on an operation panel of the installation cabinet 1. The power interface 7 is a three-in-one socket which has the functions of a switch and a fuse.
Four movable wheels 2 are arranged at the bottom of the installation cabinet 1, and the installation cabinet 1 can freely move through the movable wheels.
The installation cabinet 1 is provided with a PLC integrated machine which is respectively and electrically connected with the parking sensor, the parking electromagnetic valve, the BC sensor, the BC1 electromagnetic valve and the BC2 electromagnetic valve. The model of the PLC all-in-one machine is a medium-speed optimal control MM-26MR-4MT-S1001A-FX-B, and the PLC all-in-one machine has a digital quantity input/output module and an analog quantity input/output module, so that a digital quantity control function can be realized, and a signal processing function of the air pressure sensor can be met.
The PLC all-in-one machine comprises a PLC control function and a touch screen display function, different function selections are provided on a touch display screen 3 of the PLC all-in-one machine, and corresponding action instructions are sent out according to requirements. The display interface of the touch display screen 3 is used for displaying and controlling functions, and the display control comprises parking pressure, braking pressure, a pressure maintaining starting value, leakage quantity, current action times, a pressure maintaining valve, a parking electromagnetic valve, a BC1 electromagnetic valve and a BC2 electromagnetic valve for action display; the data setting control comprises pressure maintaining time setting, leakage quantity setting and action frequency setting; the control controls comprise control selection, manual control, pressure maintaining start and stop, parking start and stop, braking start and stop and other controls.
The tread brake unit testing device further comprises a three-way connector used for connecting the parking electromagnetic valve, the BC1 electromagnetic valve and the BC2 electromagnetic valve, and the three-way connector is used when the tread brake unit testing device works.
The tread braking unit testing device can realize the following detection or test:
1. the pressure maintaining test is carried out on the device, and whether the device has leakage or not is detected;
2. The pressure maintaining test of the single parking cylinder is used for detecting whether the parking cylinder of the single tread braking unit has leakage or not;
3. The pressure maintaining test of the single brake cylinder is used for detecting whether the single tread brake unit brake cylinder has leakage or not;
4. a single parking cylinder is subjected to fatigue test, and the parking cylinder is inflated and exhausted according to set times;
5. a single brake cylinder fatigue test, wherein the brake cylinder is inflated and exhausted according to set times;
6. And (3) synchronously performing fatigue test on the two brake cylinders, and synchronously inflating and exhausting the two brake cylinders according to the set times.
7. Rough test of action value of tread braking unit: the corresponding electromagnetic valve is selected, the air pressure is regulated up through the pressure regulating valve, the action state of the tread braking unit is observed, the pressure value is displayed, and the rough measurement function is realized.
As shown in fig. 3, the protection arrangement is carried out according to the maintenance operation safety requirement of the electric bus, corresponding B11 and B7 are cut off after the power failure of the bow is reduced, and the parking pipe and the brake pipe of the tested tread brake unit are detached from the brake system pipeline and connected with the testing device. According to the test content, if the fatigue test is needed, the two coaxial tread braking units are connected into the test device at the same time. The device air source adopts the air spring air source of the vehicle, the quick connector of the pressure maintaining valve is connected with the air spring air path test port through the air source pipe, and ventilation test is carried out after the air source is connected. After the test is completed, the quick connector of the test device is sealed through the sealing head, so that foreign matters such as dust are prevented from entering, and pollution to the test device and an electric bus wind source is avoided. The device is connected with an external power supply through the power interface 7, a power supply cabinet nearby is selected without using an electric bus power supply, the next operation can be performed after the device is connected, and the protection of the external power supply is finished by the power supply cabinet.
The solenoid valve, the BC1 solenoid valve and the BC2 solenoid valve are mutually connected by using a three-way joint, the air source air charging and discharging, the BC1 air charging and discharging, the BC2 air charging and discharging are manually controlled to be in an ON position, then the BC pressure regulating valve is regulated to 600kPa, and after the stable display is achieved, the pressure maintaining time and the leakage quantity are set. The air source is inflated and exhausted to the OFF position, the pressure maintaining device is started to conduct pressure maintaining test, and whether the leakage quantity reaches the set requirement is prompted after the pressure maintaining time is up.
The brake cylinder pressure maintaining test and the parking cylinder pressure maintaining test are similar to the device pressure maintaining test in operation, and are selected according to the air path principle, and the electromagnetic valve is not required to be driven to the OFF position in the selection control. For example, the parking cylinder is used for maintaining pressure, the BC1 electromagnetic valve and the BC2 electromagnetic valve are driven to the OFF position, and then the operation process is consistent according to the device pressure maintaining test.
The sensitivity test is mainly used for detecting parking actions and starting pressure tests of braking actions, and the action sensitivity of the tested tread braking unit can be tested by operating a manual control on a display screen to realize that the air paths of the parking cylinder and the braking cylinder of the tested tread braking unit are smooth, regulating the pressure regulating valve of the parking cylinder and the braking cylinder to ensure that the air pressure rises from 0kPa and observing corresponding pressure display and action mechanisms of the tread braking unit during the rising.
The parking and braking fatigue test mainly realizes the repeated application and alleviation of the parking and braking functions of the tread braking unit. After the air paths are connected, the air pressure is regulated to a required pressure value, corresponding action times are set on the display screen, and a parking start control and a braking start control are clicked to enter corresponding tests. The interface displays the real-time times, and the popup window prompts the test completion after the test is completed.
After the test is completed, the wind source is removed, the wind pressure drop of the device is 0kPa, the power supply is powered on, and the removal device is connected with a pipeline of the tread braking unit. Restoring the connection of the tread braking unit to the braking system. And B11 and B7 are recovered, the electric lifting bow is thrown to carry out the test of service braking and parking braking, and the vehicle is taken up according to the normal maintenance flow after the test is completed.
The utility model is not limited to the above-described alternative embodiments, and any person who may derive other various forms of products in the light of the present utility model, however, any changes in shape or structure thereof, all falling within the technical solutions defined in the scope of the claims of the present utility model, fall within the scope of protection of the present utility model.
Claims (8)
1. The utility model provides a tread brake unit testing arrangement which characterized in that: the automatic air supply device comprises a pressure maintaining valve communicated with an air source, wherein the pressure maintaining valve is respectively connected with a parking pressure regulating valve and a BC pressure regulating valve through an air passage, the parking pressure regulating valve is sequentially connected with a parking sensor and a parking electromagnetic valve through the air passage, the BC pressure regulating valve is connected with the BC sensor through the air passage, and the BC sensor is respectively connected with a BC1 electromagnetic valve and a BC2 electromagnetic valve through the air passage.
2. The tread brake unit testing device according to claim 1, wherein: the pressure maintaining valve, the parking electromagnetic valve, the BC1 electromagnetic valve and the BC2 electromagnetic valve are connected with the quick connector, and the quick connector is detachably provided with a sealing head.
3. The tread brake unit testing device according to claim 2, wherein: still include mounting cabinet (1), pressure-retaining valve, park air-vent valve, BC air-vent valve, park sensor, park solenoid valve, BC sensor, BC1 solenoid valve and BC2 solenoid valve all locate in mounting cabinet (1), and quick-operation joint locates the surface of mounting cabinet (1).
4. The tread brake unit testing device according to claim 3, wherein: four moving wheels (2) are arranged at the bottom of the installation cabinet (1).
5. The tread brake unit testing device according to claim 3, wherein: install the PLC all-in-one on installing cabinet (1), the PLC all-in-one respectively with park sensor, park solenoid valve, BC sensor, BC1 solenoid valve and BC2 solenoid valve electric connection.
6. The tread brake unit testing device according to claim 5, wherein: the parking sensor and the BC sensor are both air pressure sensors.
7. The tread brake unit testing device according to claim 5, wherein: the model of the PLC all-in-one machine is medium-speed optimized MM-26MR-4MT-S1001A-FX-B.
8. The tread brake unit testing device according to claim 1, wherein: the three-way connector is used for connecting the parking electromagnetic valve, the BC1 electromagnetic valve and the BC2 electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323043104.4U CN221224251U (en) | 2023-11-10 | 2023-11-10 | Tread brake unit testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323043104.4U CN221224251U (en) | 2023-11-10 | 2023-11-10 | Tread brake unit testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221224251U true CN221224251U (en) | 2024-06-25 |
Family
ID=91544045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323043104.4U Active CN221224251U (en) | 2023-11-10 | 2023-11-10 | Tread brake unit testing arrangement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221224251U (en) |
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2023
- 2023-11-10 CN CN202323043104.4U patent/CN221224251U/en active Active
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