RU108619U1 - STAND FOR TESTING AUTOMATIC BRAKING REGULATORS - Google Patents

Abstract

 1. A test bench for testing automatic controllers of braking modes, comprising power and control units, as well as an electro-pneumatic part with pressure meters, valves and a displacement transducer, characterized in that the control unit is equipped with a display and a program that allows switching from one type of automatic controller to another , switch cycles in test modes and simultaneously display on the display information about the test process and the monitored parameters of auto mode. ! 2. A test bench for automatic braking mode controllers according to claim 1, characterized in that the control unit further comprises a non-volatile memory. ! 3. A test bench for automatic braking mode controllers according to claim 1 or 2, characterized in that the control unit further comprises a real-time clock chip. ! 4. A stand for testing automatic braking mode controllers according to any one of claims 1 to 3, characterized in that the control unit further comprises a radio data exchange module. ! 5. A stand for testing automatic braking mode controllers according to any one of claims 1 to 4, characterized in that the power supply unit is made with an extended supply voltage range. ! 6. A stand for testing automatic braking mode controllers according to any one of claims 1 to 5, characterized in that it is additionally equipped with a filter with a built-in indicator for monitoring the state of the filter element with the ability to display information about this state on the display.

Description

The test bench for testing automatic regulators of braking modes (auto modes) of freight cars refers to automated equipment for control and measuring operations during acceptance and post-repair tests. The stand imitates various modes of braking in auto mode by creating pneumatic effects on its chambers and the damper piston, while continuously measuring the movement of the damper stop, pressure in the chambers and channels of the device and the stand, followed by saving the received information, analysis and transmission to a PC. According to the test results, the stand automatically determines the technical characteristics of the auto mode and checks them for compliance with the requirements of technical conditions.

There is a well-known stand of the UKAR-2M brand, a description of the principle of operation and technical characteristics of which are disclosed in the technical description 008.00.00TO, approved in 1998, and the operation and maintenance of the stand - in the operating instructions 008.00.00 IE, approved in 1998. This stand contains a power supply, a control unit with a line of LEDs and a three-digit digital indicator, an electro-pneumatic part with pressure gauges, valves and a displacement encoder. The results of the test stand and auto mode are displayed on a line of LEDs and a three-digit digital indicator. Various combinations of illuminated LEDs correspond to a specific malfunction of the checked auto modes or an emergency. By pressing the corresponding buttons on the control panel, the digital indicator displays the pressure values in the channels and cameras of the automatic mode and the displacement values of the displacement encoder rod, as well as the number of the current mode or test cycle. The stand provides for the possibility of stopping the test of auto mode on any cycle, and repeated testing is possible only from the initial cycle of the mode. Test results are transmitted to a PC via cable.

The disadvantages of this stand are:

- the inability to simultaneously control the parameters of the stand and the test mode of auto mode, which reduces the efficiency of diagnosis in general;

- the possibility of switching cycles in the test modes of the stand and auto mode is not provided, which increases the technological time for detecting malfunctions of the tested devices;

- in case of communication failure between the stand and the PC, the test results are lost, because no means are provided for synchronous storage;

- the exchange of data between the stand and the PC via cable, which limits the mobility of the stand and complicates its installation;

- a narrow voltage range of the supply network, beyond which leads to malfunctions of the stand, which limits the use of the stand and requires the use of additional equipment to stabilize the voltage, which is difficult or impossible to install under automatic transmission conditions.

The prototype for the proposed utility model was a test bench for testing the braking force autoregulator according to RF patent No. 86307 for a utility model with a priority dated January 13, 2009, which contains a power supply and control unit, an electro-pneumatic part with pressure gauges, valves and a movement adjuster. In this case, the displacement adjuster has a displacement stroke of the displacement cylinder sufficient to test the auto mode with increased dimensions of the damping piston stroke. The stand may have a removable unit for the movement adjuster, the mounting flange and grips. To switch from one type of auto mode to another, a test program is selected by reprogramming the controller to the type of auto mode being checked, and the displacement encoder is moved around the rack or the limit stops are removed from its head. The technical result of this utility model is aimed at expanding the range of auto modes for diagnosis, but this does not solve the above technical problems. In addition, the disadvantages of this stand can also be attributed to the fact that when switching from one type of auto mode to another, testing requires mechanical work and reprogramming, which significantly increases the total test time.

The objectives of the proposed utility model are aimed at expanding the functionality of the stand for testing various types of auto modes, namely:

- simultaneous display of information about the testing process and the controlled parameters of the auto mode in real time, which increases the efficiency of control;

- reducing the time for troubleshooting auto mode and, accordingly, the test time as a whole;

Additional tasks are also:

- saving test results with the possibility of further reading in case of violation of data exchange between the stand and the PC;

- increasing the mobility of the stand;

- expanding the voltage range of the mains, which eliminates malfunctions in the stand.

The technical results of the claimed utility model are achieved due to the fact that the test bench for automatic braking mode controllers contains power and control units, an electro-pneumatic part with pressure gauges, valves and a movement adjuster. The control unit is equipped with a display and a program that allows you to switch from one type of automatic controller to another, switch cycles in test modes, and simultaneously display information about the test process and the monitored auto mode parameters. The control unit can be additionally equipped with non-volatile memory, a real-time clock chip, and a radio data exchange module. In addition, the power supply can be made with an extended range of supply voltage, and the stand can additionally contain a filter with a built-in indicator for monitoring the status of the filter element.

The principle of operation of the stand for testing automatic regulators of the braking modes of freight cars is based on several modes, such as “Warm-up”, “Set up the stand”, “Emergency”, “Stop (test stop)”, “Type selection and setting the auto mode”, “Self-control (check of the stand) ”,“ Check of the auto mode ”and others. The modes "Self-control (test stand)" and "Auto-test" consist of cycles.

When the stand is turned on, the “Warm-up” mode is automatically performed, while the control unit displays the name of the current mode, its duration and the current time in the mode. At the end of the "Warm-up" mode, an automatic transition to the "Self-control" mode is performed, during which the technical characteristics of the stand are checked. In each cycle of the "Self-control" mode, the control unit displays simultaneously the name of the current mode, the number of the current cycle, the duration of the current cycle and the current time in the cycle, the value of the controlled measurement parameter of the stand, as well as the type of faults detected. Information on the display is continuously updated. Thus, the control unit program allows you to simultaneously display on the display information about the testing process and the monitored parameters of the auto mode in real time.

Information about the state of the filter element for cleaning compressed air is also displayed on the display of the control unit, which allows technical personnel to timely evaluate the filter life and replace it. Installing a filter with an integrated indicator in the supply line of the stand allows you to monitor the state of the filter element in order to avoid technological downtime associated with clogging of the electropneumatic part of the stand and checked auto mode.

In the last cycle of the "Self-control" mode, the display shows the cycle numbers and parameters of the stand, at which malfunctions of the stand were identified with an indication of their types.

If there are no detected malfunctions of the stand, an automatic transition to the "Type selection and setting of auto mode" mode is performed, while the display shows the name of the current mode and the type of checked auto mode. The choice of the type of auto mode determines the algorithm of the test program and is carried out using the keyboard or touch panel of the control unit. The transition from one type of auto mode to another during testing is carried out exclusively due to the control unit program without additional work (structural changes or reprogramming), which reduces the testing time. After setting the auto mode and starting its tests, the stand goes into the "Auto mode check" mode. This mode consists of cycles that implement the methodology for checking the selected type of auto mode. Similarly to the "Self-control" mode, the control unit displays information about the verification process and monitored parameters of the auto mode, which is continuously updated during the test. In the last cycle of this mode, the display shows the cycle numbers and the measured parameters of the auto mode, in which malfunctions of the auto mode were identified with an indication of their types.

The control unit program also allows you to stop the tests and switch cycles in the modes of "Self-control" and "Check auto mode" at any time in order to reduce the time to resolve identified device malfunctions. To do this, the “Stop (test stop)” mode is set, in which all tanks are released from the air, which allows you to remove the defective parts of the devices. Stopping tests and switching cycles is done using the keyboard or touch panel of the control unit. After eliminating the identified malfunctions, the details of the devices are installed back, then a mode cycle is selected to continue the tests. Thus, switching mode cycles allows you to not re-run cycles in which device malfunctions were not detected, which reduces the testing time as a whole.

The control unit may contain non-volatile memory for storing the results and test history. For this, in the data exchange protocol of the control unit, in addition to the possibility of transferring data to a PC, it is possible to read test information from non-volatile memory. In case of communication failure between the control unit of the stand and the PC, the test results are stored in non-volatile memory, which are read to restore data. Also, the control unit can additionally be equipped with a real-time clock chip, which allows you to register and save test results taking into account the date and time of the test.

At the request of the PC registration program, the control unit program transfers data to the PC. The transmitted data contains information about the test process, controlled technical characteristics of the auto mode and the stand, as well as test results. Data is exchanged according to the protocol implemented in the control program of the control unit. The original data exchange protocol in the PC registration program allows you to connect several stands to a single network. The PC registration program continuously provides visualization of the received test data from the stand, as well as storage in the database with the ability to print test results.

The inclusion of a radio channel data exchange module in the control unit of the stand allows for the exchange of data over the radio channel, which makes the stand mobile and eliminates the need for cabling.

The use of a power supply unit with an extended range of supply voltage (from 85 to 264 V) in the stand ensures the operability of the stand with an unstable supply voltage.

A test bench for testing automatic regulators of the braking modes of freight cars with advanced functionalities can reduce the test time and troubleshoot auto-mode while providing operational control of the process with the ability to synchronously save test results in non-volatile memory and transmit data over the air. Thus, the claimed stand in comparison with the closest analogue has wider functionality.

Claims (6)

1. A test bench for testing automatic controllers of braking modes, comprising power and control units, as well as an electro-pneumatic part with pressure meters, valves and a displacement transducer, characterized in that the control unit is equipped with a display and a program that allows switching from one type of automatic controller to another , switch cycles in test modes and simultaneously display on the display information about the test process and the monitored parameters of auto mode. 2. A test bench for automatic braking mode controllers according to claim 1, characterized in that the control unit further comprises a non-volatile memory. 3. A test bench for automatic braking mode controllers according to claim 1 or 2, characterized in that the control unit further comprises a real-time clock chip. 4. A stand for testing automatic braking mode controllers according to any one of claims 1 to 3, characterized in that the control unit further comprises a radio data exchange module. 5. A stand for testing automatic braking mode controllers according to any one of claims 1 to 4, characterized in that the power supply unit is made with an extended supply voltage range. 6. A stand for testing automatic braking mode controllers according to any one of claims 1 to 5, characterized in that it is additionally equipped with a filter with a built-in indicator for monitoring the state of the filter element with the ability to display information about this state on the display.