RU103873U1 - STAND OF CONTROL OF AIR DISTRIBUTORS OF PASSENGER CARS - Google Patents

Abstract

 1. The control stand of the passenger cars air distributors, including pneumatic valves control and switching units with air pressure sensors and corresponding mounting flanges with pneumatic clamps located in the housing, characterized in that it is additionally equipped with a unit for changing the pressure rate, made in the form of an additional valve, pressure stabilizer and throttle, and the design of the mounting flange and mode switches is made suitable for the installation of various air distributors. ! 2. The stand according to claim 1, characterized in that the said additional elements of the pneumatic circuit of a part of the stand pass a health check during self-diagnosis. ! 3. The stand according to claim 1, characterized in that a device capable of distinguishing one or another type of air distributor and operating the corresponding mode switch is additionally installed on the mounting plate.

Description

The control stand of passenger cars air distributors refers to railway repair equipment and is intended, in particular, to control and adjust the parameters of passenger cars air distributors No. 292, No. 305 and No. 242 as well as switching valves in workshops for their repair and testing in accordance with the requirements of Instructions TsV-TsL- 945, as well as factories of manufacturers of such devices.

Equipment for effective checking of the condition of brake equipment, and in particular air distributors, is necessary in order not to let the wagons with their incorrect adjustment or malfunctions arising during their production and operation go into operation. The stands available for these purposes at present on the road network are not without certain drawbacks that do not allow for reliable and full control and adjustment of brake equipment using their technical capabilities. This is the well-known test bench for air distributors (BP No. 292) and electric air distributors (EVR No. 305) for passenger cars, which is produced by the PCB CV. It is made in the form of a remote control of a welded structure and is equipped with two pneumatic clamps controlled by pedals for connecting these devices to the stand to check their basic characteristics. Changing the operating modes of these devices is carried out by a crane of type No. 334 E and pneumatic valves manually. Pressure monitoring in tanks is carried out using pressure gauges. The electric parameters of the electro-pneumatic brake (EPT) are changed by an autotransformer ("Automatic brakes of rolling stock of railway transport" Asadchenko VR, UMK MPS of Russia, 2002, p. 84). In practice, this design does not have automation elements that are currently required. In addition, it is intended for only two types of devices.

A technical solution is known that is used to check and adjust the air distributors of passenger cars, implemented in the design of a test bench for quality control of passenger air distributors of mods. SIA.1 RP produced by RUE “GSKTBGA” (Republic of Belarus) (www.gsktb.com/html/pdf/SIA 1_RP.pdf found on the Internet on August 31, 2010). The stand includes control units and control pneumatic valves. The specified stand allows you to: a) conduct diagnostics of the equipment of the stand with the identification of failures and possible malfunctions, b) conduct checks and control the parameters of passenger air distributors (No. 292) and electric air distributors (No. 305) in automatic and operational modes, c) generate test reports, store them in memory, the conclusion of test reports for printing with the presentation of the parameters measured by the stand in tabular and graphical form.

We note the presence of large sizes and weights, as well as the ability to test only pneumatic and electro-pneumatic devices.

The closest known for its technical essence and the achieved result is a stand selected as a prototype for monitoring, diagnostics and testing of air distributors of railway passenger rolling stock, containing two independently functioning parts for BP No. 292 and EVR No. 305 on one table (see, “Device control of air distributors of passenger cars UKVRP ”produced by NPP TORMO CJSC (Russia) (http://tormo.telenet.ru/products/3_ukrp.htm, found on the Internet on August 31, 2010). The switching valve is checked for hours This is related to EVR # 305. Each part of this stand has power supply units (PSU), control units (BU) and electro-pneumatic (EPB).

The control contains measuring equipment in the form of pressure sensors and a control panel connected to the microprocessor. It has the ability to switch operating modes and perform self-tests before starting testing the air distributors according to a given program. The progress of the test process is reflected on the computer monitor. The electro-pneumatic unit is used as an actuator of the control unit. EPB contains distribution and mating plates with channels used for communication with other elements of the unit: sensors, pneumatic amplifiers, electromagnetically ventilators, pneumatic clamp, mode switch and reservoirs. The pneumatic clamp is designed to connect a specific air distributor to the pneumatic system. As it turned out, the disadvantages of this system are the fuzzy control of the formation of pressure and the unified design of the mounting flange and mode switch under BP No. 242. Therefore, there is a need for further modernization of this stand.

The problem solved by the claimed utility model is to expand the technical capabilities of the stand for monitoring and tuning air distributors by expanding the range of diagnosed devices, as well as achieving increased accuracy in regulating and measuring the technical parameters of the diagnosed object.

The solution to this problem is achieved by the fact that the control stand of the passenger cars air diffusers, including pneumatic valves control and switching units with air pressure control sensors and corresponding mounting flanges with pneumatic clamps, in addition to the prototype, is additionally equipped with a pressure rate change unit made in the form of an additional valve pressure stabilizer and throttle, and the design of the mounting flange is made suitable for installation of various air redeliteley, including VR№242. And the mode switch for BP No. 242 is installed in addition to the existing one.

The solution to this problem is also achieved by the fact that:

the indicated improvements in the pneumatic circuit of a part of the stand pass a functional test during self-diagnosis.

In addition, a device capable of distinguishing one or another type (number) of the air distributor is additionally installed on the mounting plate.

When implementing the totality of the claimed features, it is possible to achieve a technical result, which is expressed in the following:

in ensuring unification by providing diagnostics and testing of two types of air distributors at one working position without increasing production areas.

in obtaining information about the parameters of the tested air distributor, which can be determined using the stand with increased accuracy and more reliably.

Proposed improvements are shown in the corresponding drawing.

Figure 1 presents the pneumatic diagram of a part of the stand with the changes indicated by a dashed line.

The control stand for passenger cars air diffusers contains two parts in a single building for different air distributors ВР№292 and ЭВР№305, each of which has control units, electro-pneumatic valves with air pressure sensors. The power supply may be common to both parts. On the pneumatic diagram of figure 1 shows the part related to the air distributors. Here, in different parts of the circuit, eleven electro-pneumatic valves (1-11), attorney pressure sensors (13-16) and a pressure gauge 17 of the corresponding accuracy class, a mode switch 18, a pressure cylinder 19, a main cylinder 20, tanks for seventy-eight liters 21, are installed on fifty-five liters 22 and twenty liters 23. In parallel with the electro-pneumatic valve 7 between the pressure (supply) line 26 and the stand line 27, which together with the tank 22 they act as a pneumatic stabilizer, is installed additional valve 12 with a throttle 24 and a pressure regulator 25, designed to smoothly increase the pressure in the reservoir 22. The stand is equipped with an additional mode switch for another type of air distributor BP No. 242, which can be controlled by either an existing pneumatic circuit or a separate circuit unit (not shown)

The air distributor under test is indicated in the figure as 28.

Monitoring, adjusting the air diffusers and switching valves of passenger cars according to the above diagram is as follows. After self-diagnosis of all elements of the stand, including additionally introduced elements, a checked air distributor is installed on the mounting plate (not shown) of this part of the stand. The design of this plate is made in such a way that allows you to accept at this stage BP No. 292 or BP No. 242. When the stand is started, the air distributor flange is pressed to the plate when valve 10 is turned on. A recognition device of a contact or other type (not shown) automatically determines the type of air distributor (BP No. 292 or BP No. 242) and the information is displayed on the screen (monitor). In addition, determining the type or number of the air distributor allows you to select the appropriate switch type for use.

Further, either automatically or with interruption of the process by selecting the appropriate menu items on the display, the installed air distributor is automatically checked. An additional unit in the form of elements 12, 24 and 25 allows at one of the verification steps to linearly increase the pressure in the reservoir 22. Moreover, devices that do not meet the technical requirements are more correctly determined by the response.

The design of the stand provides the ability to control the process of diagnosing equipment in manual mode - using the switches that are located on the front side of the control stands (for individual test modes).

The control stand checks the air distributor according to the programmed list of parameters. Quantitative measurement results are displayed on the display of the control stand and transferred to the database of his computer, where they are qualitatively compared and stored. Test results are displayed on the stand display.

Based on the accumulated information, a test report is generated, which can be printed out for printing on a printer.

The stand software allows you to perform the following functions:

- pneumatics and electronics control;

- monitoring the health of components of the stand;

- determination of the diagnosed object and its parameters and comparison with the acceptable ones, that is, whether the device meets the safety requirements.

- storage of control results, their presentation

The introduction of additional elements into the part of the stand related to the check of the air distributors made it possible to improve its operation and increase the accuracy of determining the pneumatic characteristics.

Due to the installation of an advanced cooker and a mode switch, the stand acquired the ability not only to carry out complex inspections of different air distributors, but also retained the ability to carry out its individual steps, which reduces the time required to bring each parameter to normal. The technical task with the relevant documentation was completed on the device and tests of the modernized design of the УКВРП were carried out.

Claims (3)

1. The control stand of the passenger cars air distributors, including pneumatic valves control and switching units with air pressure sensors and corresponding mounting flanges with pneumatic clamps located in the housing, characterized in that it is additionally equipped with a unit for changing the pressure rate, made in the form of an additional valve, pressure stabilizer and throttle, and the design of the mounting flange and mode switches is made suitable for the installation of various air distributors. 2. The stand according to claim 1, characterized in that the said additional elements of the pneumatic circuit of a part of the stand pass a health check during self-diagnosis. 3. The stand according to claim 1, characterized in that a device capable of distinguishing one or another type of air distributor and operating the corresponding mode switch is additionally installed on the mounting plate.