RU97098U1 - DEVICE FOR ACCEPTANCE OF AUTOMATIC BRAKES OF FREIGHT WAGON (UPTV-GR) - Google Patents

Abstract

 A device for receiving an automatic brake of a freight car, the input of which is connected to the power supply network, and the output to the brake line of the car, containing a pneumatic actuating unit, a pressure sensor of the supply line installed in the nutritional part of the pneumatic actuating unit, a pressure sensor of the brake line mounted on the pneumatic actuating unit , brake cylinder pressure sensor mounted on the brake cylinder of the car, battery and function block (control unit leniya), characterized in that all structural elements of the device are made frost-resistant, while the pneumatic actuating unit contains a charge pressure reducer, the input of which is connected to an air purification filter, and the output is with an electro-pneumatic power relay.

Description

The utility model relates to the field of railway transport, mainly to diagnostic systems for brake equipment of freight cars. The utility model is intended for testing and acceptance of an automatic brake of a freight car.

A device for diagnosing brake equipment of a rolling stock is known (Patent RU 86539 Ul B60T 17/22, published on 09/10/2009). The device comprises a pneumatic unit, a control and management unit with a radio modem; mobile pressure meter with a radio modem. The pneumatic unit contains a fine filter for compressed air, an electro-pneumatic converter, a precision pressure regulator, an electro-pneumatic valve, a pressure sensor, an air flow sensor and a flow data processing unit. The inputs of the filter and the precision pressure regulator are connected to the pressure line, while the point of connection of the filter and the regulator to the pressure line is the input of the pneumatic unit. The output of the filter is connected to the input of the electro-pneumatic converter. The converter output is connected to the control input of a precision pressure regulator, the output of which is connected to the pneumatic valve inlet. The valve output is connected to the input of the pressure sensor and the input of the air flow sensor. The first output of the air flow sensor is connected to the input of the flow data processing unit, the output of which is connected to the control and management unit. The second output of the sensor, which is the output of the pneumatic unit, is connected to the brake line in the head of the rolling stock. The control and management unit to which the radio modem is connected is connected to the control inputs of the electro-pneumatic converter, the electro-pneumatic valve and to the output of the pressure sensor.

The disadvantage of this device is the limited functionality that does not allow testing and acceptance of the automatic brake of a freight car in accordance with the requirements of the Repair Instructions for brake equipment of cars CV-TsL-945. Namely:

- there is no way to record the pressure in the brake cylinder, since there is no pressure sensor in it;

- this device is structurally and technologically optimized for diagnosing the operation of air distributors for the composition of cars, and not for testing the brakes of a single freight car when it is released from repair, which increases the test time and makes it difficult to accept the braking equipment of the car.

The closest technical solution, selected as a prototype, is a device for testing brake equipment of freight cars (Patent RU 68996 Ul B60T 17/22, B60T 13/26, B60T 15/60, publ. 10.12.2007). The device consists of two independently functioning parts: a mobile unit and a stationary unit. The device comprises a driver's crane or a replacement device connected to a supply line and a brake cylinder; connecting sleeves, one of which is connected to a source of compressed air, and the other to the connecting sleeve of the car; pressure sensors, one of which is installed on the air reservoir, the other on the brake line, the third on the brake cylinder; displacement sensors, one of which is mounted on the brake cylinder rod, the other - on the brake lever automatic regulator; force sensors, each of which is mounted on the brake shoes of each wagon trolley. All sensors are connected to the control unit. The test results are recorded in the non-volatile memory of the recording device, displayed on the indicator and stored in long-term memory. A pressure sensor and an optical displacement sensor mounted on the brake cylinder are enclosed in a common housing and are attached to the brake cylinder housing through a control hole. The communication between the pressure sensors, displacement, force and the control unit is carried out on the radio channel. Three pressure sensors, two displacement sensors, two force sensors, a control unit, an electro-pneumatic unit, an air exhaust device, a recording device, a power board, a power source and an indicator are part of the mobile unit. The stationary unit includes a reader, a personal computer and a printer.

However, this device has the following disadvantages:

- the impossibility of the device at an air temperature below 0 ° C due to the absence of frost-resistant elements in the design;

- the device registers the parameters that are not controlled during the repair, namely the pressing force of each block, which increases the test time and makes it difficult to accept the brake equipment of cars, due to the lack of coordination of the test process and the existing technology for repair and acceptance of car brakes in the depot;

- the complexity of the installation and dismantling of pressure, force and displacement sensors during the test of the brake equipment of a freight car, due to the large number of removable equipment installed on the car;

- the complexity of the execution of the electro-pneumatic unit containing the crane operator or a replacement device, an air tank, electro-pneumatic valves.

A utility model is proposed that is optimized for testing and accepting the brakes of a freight wagon coming out of repair, in strict accordance with the requirements of the Repair Instructions for Braking Equipment of TsV-TsL-945 wagons.

The technical task of the proposed utility model is to create a device for receiving an automatic brake of a freight car, which provides the ability to test brakes at air temperatures from 0 ° C to -60 ° C, as well as reducing test time and facilitating the installation and dismantling of pressure sensors.

To solve this problem, in a device for receiving an automatic brake of a freight car (UPTV-GR), the input of which is connected to the supply network, and the output to the brake line of the car containing a pneumatic actuating unit, a pressure sensor of the supply line installed in the nutritional part of the pneumatic actuating unit pressure brake line mounted on a pneumatic actuator, brake cylinder pressure sensor mounted on the brake cylinder of the car, battery th battery and a functional unit according to the utility model, all elements of the device are made hardy construction, the pneumatic actuating unit comprises a charging pressure reducer whose input is connected to the air purifying filter, and the output power electropneumatic relay.

Salient features of the device for receiving an automatic brake of a freight car (UPTV-GR) are:

- all structural elements of UPTV-GR are frost-resistant, which ensures uninterrupted operation of the device at air temperatures from 0 ° C to -60 ° C;

- installation and dismantling of removable equipment on the carriage is simplified, since the UPTV-GR design does not contain force sensors and displacement sensors, and only one sensor is installed on the car (pressure sensor installed on the car’s brake cylinder), therefore, the device registers only the parameters monitored during repair therefore, tests and acceptance of an automatic brake of a freight car are carried out for the minimum time allowed by the Instructions;

- the pneumatic actuating unit contains a charging pressure reducer, used instead of the crane operator or its replacement device, therefore, the crane and the air tank are excluded, which simplifies the design of the electro-pneumatic unit and facilitates the design.

The essence of the utility model is illustrated by drawings.

Figure 1 - presents a General view of the device for receiving automatic brakes of a freight car (UPTV-GR); figure 2 is a block diagram of a device for receiving an automatic brake of a freight car; figure 3 is a functional block of a device for receiving an automatic brake of a freight car; figure 4 - presents the test circuit of the brakes of the car.

The device for receiving an automatic brake of a freight car (UPTV-GR) (Fig. 1) is a mobile unit that contains a functional unit 1 (control unit) designed to perform monitoring and control operations in manual and automatic modes, connected by a cable to the battery 2, with a pressure sensor of the brake line 4, with a pressure sensor of the brake cylinder 5 and with a pressure sensor of the supply line 6; Executive pneumatic unit 3, designed to control the pressure of compressed air in the brake network of the car. The pressure sensor of the brake line 4 is installed on the pneumatic actuating unit 3. The pressure sensor of the brake cylinder 5 is installed on the brake cylinder of the car before starting the test. The pressure sensor of the supply line 6 is installed in the supply part of the pneumatic actuating unit 3. The device is powered from the connecting cable 7 of the external power circuit or from the battery 2. Flexible pipe 8 is designed to connect (before testing) the pneumatic actuator 3 with the brake line of the car with the purpose of transferring compressed air from the supply line to the pneumatic actuating unit 3, and the flexible pipe 9 - for connecting it to the supply line depot network.

The pneumatic actuating unit contains a charge pressure reducer 11 (Fig. 2), the input of which is connected to the output of the air purification filter 10, and the output is connected to the input of the electro-pneumatic power relay 12, which is connected via a tee to the brake line 13, the electro-pneumatic brake relay 14 and the brake pressure sensor line 4. Pressure reducer 11 is designed to control the pressure in the brake line. The pressure sensor of the brake line 4 is installed on the brake cylinder 15 of the car. The electro-pneumatic brake relay 14 is designed to release compressed air from the brake line 13.

The functional unit (Fig. 3) contains a housing 16, a power button UPTV-GR 17, a display 18 for informing the operator, a keyboard 19 for entering information about the tested car and tasks of the teams to perform operations to test the brakes of the car, a USB connector for flash the disk 20, and inside the housing 16 is a measuring and recording device made on the basis of microprocessor elements, and collecting, processing and analyzing information.

All structural elements of UPTV-GR are made frost-resistant.

The device for receiving an automatic brake of a freight car (UPTV-GR) works as follows. Figure 4 presents the test circuit of the brakes of the car. For testing and acceptance of the automatic brake of a freight car UPTV-GR roll up to the end of the tested car. Before turning on the UPTV-GR, a sensor 5 is installed on the brake cylinder 15, the pneumatic input 9 of the device is connected to the PM supply line, and the pneumatic output 8 is connected to the brake line of the TM car. Thus, the pressure sensor of the brake line 4 measures the pressure in the brake line, and the pressure sensor of the supply line 6 measures the pressure in the supply line.

The installation is switched on by button 17 (Fig. 3) located on the front panel of the function block. When the device is turned on, one of the menu items appears on the display 18 of the function block.

The transition from the previous menu item to the next is carried out by pressing the button “→” of the keyboard 19 of the functional block (figure 3).

The transition from the previous menu item to the next is carried out by pressing the button “→” of the keyboard 19 of the functional block (figure 3). The selection of the necessary menu item is carried out by pressing the "Yes" ("C") button.

When you select the item "Car number" enter the eight-digit number of the tested car for the purpose of subsequent registration of the results of all tests of the brake of the car, the type of air distributor installed on the car.

Selecting the item "Checking the density of TM". To confirm the operation of checking the density of TM, click on the button "Yes" ("C"), after which the device starts checking the density of the brake line of the car in automatic mode.

When you select the item "Check the brake", the device starts testing the pneumatic part of the brake system of the car in automatic mode.

When you select the item "Manual mode", the device enters the control mode of the keyboard 19, in which operations are performed by pressing the buttons "1", "2", "3" (figure 3).

When you select the "View results" item, the program goes to the submenu (auxiliary menu), where you can view the test results of the brakes of any tested car.

To transfer data to a flash drive, the latter is inserted into the connector 20 of the function block, select "USB" in its menu, press the "Yes" ("C") button, and the program for recording test results to the flash drive is activated.

When you select the "Clear memory" item, the memory of the functional block is cleared (deleting all test results).

When you select the item "Date and time", the program enters the mode of setting the current date and time in order to register the test date of the car brakes (it is set once, further time measurement is automatic).

Checking the density of the brake line of the car.

In the menu of the function block, select the item "Checking the density of the TM", while the device starts checking the density of the brake line of the car (with the air distributor turned off) in automatic mode. Verification is carried out in two stages, which follow strictly one after another. After the end of one stage of the test, all its results are automatically recorded in the memory of the functional block, and the next stage begins.

The first stage of the test is charging the brake line of the car. When charging, an electro-pneumatic power relay 12 (Fig. 2) is energized, and the charge pressure reducer switches to the compressed air supply mode — compressed air is supplied to the brake line 13. Charging time is 6 minutes.

The second stage of the test is to check the density of the brake line of the car. At the end of charging, the electro-pneumatic power relay 12 is turned off and the power of the brake line is stopped. The “overlap” mode is set. The duration of the “overlap” is 5 minutes. At the end of the brake line (TM) density check, the device exits the test mode, the main menu item "TM density check" appears again on the display.

Testing the air brake in automatic mode.

In the menu of the functional block (figure 3), select the item "Check the brake", while the device starts testing the pneumatic part of the brake system of the car in automatic mode. All stages of the test follow strictly one after another. After the end of one stage of the test, all its results are automatically recorded in the memory of the functional block, and the next stage begins.

The first stage of the test is charging the car’s brake network. When charging, an electro-pneumatic power relay 12 (FIG. 2) is energized, and the charge pressure reducer switches to the compressed air supply mode — compressed air is supplied to the brake line. Charging time is 1 minute.

The second stage of the test is the braking stage. At the braking stage, the voltage is supplied to the electro-pneumatic braking relay 14, and the electro-pneumatic power relay 12 is de-energized. The supply of compressed air is interrupted, and the brake line communicates with the atmosphere through the exhaust valve. The magnitude of the pressure drop is 0.5-0.6 kgf / cm ² .

The third stage is checking the density of the brake network during the braking stage. Upon reaching the set braking stage, the electro-pneumatic braking relay 14 is turned off and the message of the brake line with the atmosphere is terminated. The “overlap” mode is set. The duration of the “overlap” is 5 minutes.

The fourth stage is the release of the brakes after checking the density. The electro-pneumatic power relay 12 (figure 2) is energized and compressed air is supplied to the brake line. When the pressure in the brake line increases, the brake must fully release in 70 seconds.

The fifth step is to check the brake during full service braking. The supply of compressed air is interrupted, and the brake line communicates with the atmosphere through the exhaust valve. The magnitude of the pressure when performing PST 3,5 ± 0,1 kgf / cm ² . When this is recorded pressure in the brake line 13 and the brake cylinder.

The sixth step is to check the density of the brake cylinder after braking. The “overlap” mode is set. Duration of “overlapping” - 3 minutes during depot or overhaul; 2 minutes with current uncoupling repair.

The seventh stage is the release of the brakes after checking the density of the brake cylinder (TC). The electro-pneumatic power relay 12 is energized and compressed air is supplied to the brake line. At a pressure in the line of 4.5 ± 0.1 kgf / cm ² , a complete release of the brake should occur. After that, the TM carriage is charged to a pressure of 5.4 ± 0.1 kgf / cm ² .

If the brake is checked according to the norms of the current uncoupling repair, the test at this stage ends.

The eighth stage is to check the operation of the brake in the mountain mode of the air distributor. On the display 18 (FIG. 3), the inscription “Switch BP to mountain mode” appears, after which the operations according to item 25.5.2 are performed. Instructions for repairing the brake equipment of cars CV-TsL-945 and click on the "Yes" button on the keyboard 19. After that, the supply of compressed air stops, and the brake line communicates with the atmosphere through the exhaust valve to a pressure of 3.5 ± 0.1 kgf / cm ² in the TM. In this case, the pressure indicators in the brake line and brake cylinder are recorded. On the display 18 the inscription “Measure the rod output of the shopping center” appears, after which the rod output of the brake cylinder is measured and the “Yes” button is pressed on the keyboard 19.

The ninth stage is brake release. There is a supply of compressed air to the brake line. If the pressure in the brake line increases to the charging line, the brake must fully release. On the display 18 (FIG. 3), the inscription “Switch BP to plain mode” appears, then switch the air distributor back to plain mode and press the Yes button on the keyboard 19.

After that, the check of the car brake action is considered completed. All test results recorded by the function block can be written to a computer as a text file.

So, the device for receiving an automatic brake of a freight car (UPTV-GR) performs the following operations: charging the brake network of a specified duration; determination of the density of the braking system of the car; performing the braking stage after; checking the action of the brake during the braking stage; determination of compliance of the tightness of the brake line of the car with the established standards; determination of the pressure in the brake cylinder during full service braking; determination of the duration of the braking effect by the rate of decrease in pressure in the brake cylinder after braking; monitoring brake release when restoring pressure in the brake line.

Thus, the proposed utility model allows testing and acceptance of an automatic brake of a freight wagon that goes out of repair of any kind, in strict accordance with the requirements of the Instruction for repairing brake equipment of wagons CV-TsL-945 and for the minimum permissible time. Distinctive features of this utility model are its adaptability to the existing technology for repair and acceptance of brake equipment of wagons, the absence of an air reservoir and a crane driver in the design, the use of a customizable pressure regulator in the pneumatic unit, and, consequently, lightening the weight of the device. The use of frost-resistant elements in the design of UPTV-GR allows it to be operated in various temperature conditions, including in the open air under the influence of negative temperatures (the operating conditions of the utility model in terms of the impact of climatic environmental factors correspond to the UHL1.1 group according to GOST 15150-69, temperature mode from + 40 ° C to -60 ° C).

Claims (1)

A device for receiving an automatic brake of a freight car, the input of which is connected to the power supply network, and the output to the brake line of the car, containing a pneumatic actuating unit, a pressure sensor of the supply line installed in the nutritional part of the pneumatic actuating unit, a pressure sensor of the brake line mounted on the pneumatic actuating unit , brake cylinder pressure sensor mounted on the brake cylinder of the car, battery and function block (control unit leniya), characterized in that all structural elements of the device are made frost-resistant, while the pneumatic actuating unit contains a charge pressure reducer, the input of which is connected to an air purification filter, and the output is with an electro-pneumatic power relay.