KR102635288B1 - Operational test device of railroad switch point - Google Patents

Abstract

The present invention relates to an operation test device for a line switch. For this purpose, in the operation test device for the line switch, the base 340 where the line switch 100 is located; A test control unit 220 that instructs the operation of the line switch 100 and receives the operation direction; Servo actuator means based on control commands from the test control unit 220; A load cell 260 inserted into the load side of the servo actuator means and the line switch 100; A distance sensor 257 that detects the travel distance of the servo actuator means; It is connected to the test control unit 220, and controls and evaluates the operation test of the line switch 100 based on the operation instructions of the line switch 100, the received operation direction, and the output of the load cell 260 and the distance sensor 257. An operation test device for a line switch is provided, which includes an integrated control unit 210 that performs.

Description

Operational test device of railroad switch point}

The present invention relates to an operation test device for a line switch.

In general, various facilities that make up railroad equipment and systems are important elements that must maintain reliability in terms of train safety. In particular, failure or miswiring of a point machine (switch point) that changes the course of a train within a station can cause serious accidents such as train derailment in terms of train operation safety. In particular, track switching machines are classified as the equipment that consumes the most time in terms of operation and maintenance.

The track switch takes either the normal state or the reverse state of the rail. For example, the head-on state is a state in which a train proceeds on a main track in a straight direction, and the counter-face state is a state in which a train proceeds on a branch track. The line switch converts the line to the forward or half-clock direction by driving the motor by the forward or half-way input voltage from the signal station.

However, such line switches must be inspected periodically, and in particular, they must undergo operation tests according to regulations to confirm that there are no problems with their performance. For this purpose, a performance test device was installed directly on the line switch installed at the site and tested manually. Such conventional testing devices not only took a lot of time and money, but also had the risk of causing safety accidents with trains.

1. Republic of Korea Patent Registration No. 10-1100978 (Line switch operation status analysis display device), 2, Republic of Korea Patent Registration No. 10-1124993 (Conversion force measuring device of line switch), 3. Republic of Korea Patent Registration No. 10-1453301 (Monitoring system and method for track switching equipment).

Accordingly, the present invention was created to solve the above problems, and the problem to be solved by the present invention is to provide an operation test device for a line switch that can automatically test the overall performance of the line switch.

However, the technical problems to be achieved in the present invention are not limited to the technical problems mentioned above, and other technical problems not mentioned will be clearly apparent to those skilled in the art from the description below. It will be understandable.

In order to achieve the above technical problem, in the operation test device of the line switch, the base 340 where the line switch 100 is located; A test control unit 220 that instructs the operation of the line switch 100 and receives the operation direction; Servo actuator means that operates based on control commands from the test control unit 220; Servo actuator means and a load cell 260 inserted into the load side of the line switch 100; A distance sensor 257 that detects the travel distance of the servo actuator means; It is connected to the test control unit 220, and controls and evaluates the operation test of the line switch 100 based on the operation instructions of the line switch 100, the received operation direction, and the output of the load cell 260 and the distance sensor 257. An operation test device for a line switch is provided, which includes an integrated control unit 210 that performs.

In addition, the servo actuator means includes a servo driver 230 that receives control commands from the test control unit 220; Servo valve 240 and cylinder 250 connected to servo driver 230; And it may include a hydraulic motor 255 that supplies hydraulic pressure to the cylinder 250.

Additionally, the load side of the line switch 100 is the motor 120 side of the line switch 100.

Additionally, the cylinder 250 operates so that a load of 100 to 500 kg is applied to the load cell 260.

Additionally, the operation test is at least one of the switching power, switching time, operating current, maximum switching power, and durability of the line switch 100.

In addition, the operation test follows the Korean Railway Standard KRS SG 0001 - 18 (R), the test standard for NS-AM type track switch.

In addition, it may further include a slidex 430 that can convert and apply the operating power of the line switch 100.

According to one embodiment of the present invention, the operation of the line switch can be automatically tested under the same conditions. Therefore, not only can operation tests of more line switches be performed in a short period of time, but there is also the advantage of not requiring separate expert knowledge or technology due to the automated equipment.

Manpower and costs consumed in field testing can be reduced, and the reliability of the device can be secured by presenting a scientific measurement method.

By sensing and recording the operating status and main components of the line switch, preventive inspection is performed on status information such as the forward, false, and adhesion status of the line switch, as well as the deterioration status of the lock and control relays that make up the line switch through the change in accumulated data. This can increase availability and improve device reliability and safety.

However, the effects that can be obtained from the present invention are not limited to the effects mentioned above, and other effects not mentioned above will be clearly understood by those skilled in the art from the description below. You will be able to.

The following drawings attached to this specification illustrate preferred embodiments of the present invention, and serve to further understand the technical idea of the present invention together with the detailed description of the invention described later. Therefore, the present invention includes the matters described in such drawings. It should not be interpreted as limited to only .
1 is a block diagram showing the schematic internal configuration of the NS-AM type line switch 100;
Figure 2 is a schematic overall block diagram of an operation test device for a line switch according to an embodiment of the present invention;
Figure 3 is a block diagram subdividing the test device shown in Figure 2 into modules;
Figure 4 is a front view of the control module 400 in Figure 3;
Figure 5 is a perspective view of the base 340 in Figure 3.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, since the description of the present invention is only an example for structural or functional explanation, the scope of the present invention should not be construed as limited by the examples described in the text. In other words, since the embodiments can be modified in various ways and can have various forms, the scope of rights of the present invention should be understood to include equivalents that can realize the technical idea. In addition, the purpose or effect presented in the present invention does not mean that a specific embodiment must include all or only such effects, so the scope of the present invention should not be understood as limited thereby.

The meaning of terms described in the present invention should be understood as follows.

Terms such as “first” and “second” are used to distinguish one component from another component, and the scope of rights should not be limited by these terms. For example, a first component may be named a second component, and similarly, the second component may also be named a first component. When a component is referred to as being “connected” to another component, it should be understood that it may be directly connected to the other component, but that other components may also exist in between. On the other hand, when a component is referred to as being “directly connected” to another component, it should be understood that there are no other components in between. Meanwhile, other expressions that describe the relationship between components, such as "between" and "immediately between" or "neighboring" and "directly neighboring" should be interpreted similarly.

Singular expressions should be understood to include plural expressions, unless the context clearly indicates otherwise, and terms such as “comprise” or “have” refer to the specified features, numbers, steps, operations, components, parts, or them. It is intended to specify the existence of a combination, and should be understood as not excluding in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

All terms used herein, unless otherwise defined, have the same meaning as commonly understood by a person of ordinary skill in the field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as consistent with the meaning they have in the context of the related technology, and cannot be interpreted as having an ideal or excessively formal meaning unless clearly defined in the present invention.

example composition

Hereinafter, the configuration of the preferred embodiment will be described in detail with reference to the attached drawings.

Figure 1 is a block diagram showing the schematic internal configuration of a NS-AM (N-rail Standard A type Magnetic clutch) type line switch 100. As shown in Figure 1, the NS-AM type line changer 100 includes a control relay 110 that receives control commands for forward or reverse direction from the outside, a motor 120 that directly moves the line, a switching direction, and a switching device. It consists of a circuit controller 130 that displays whether or not it has been completed. The operation test of this track switcher (100) is conducted in accordance with the Korean Railway Standard KRS SG 0001 - 18 (R), “NS-AM type track switcher”.

The items checked in the control relay operation test are as follows.

go. It operates reliably and quickly in the rated direction, and when excited in the forward direction, the normal contact point contacts and the half contact point opens. When excited in the reverse direction, the normal contact point opens and the half contact point contacts. When excited momentarily in the switching direction, the normal contact point contacts and the half contact point opens. It must not stop at the center point.

me. After operating in one direction through current, the contact contact force must be tested when de-energized and must meet 0.696N for the motor circuit and 0.490N for the display circuit.

And, go. The items checked in the operation test of the line switch 100 are control relay electrodes, motor circuit configuration, display circuit short-circuit, unlocking between locks and operations, switching between operations, locking between locks and between motions, motor circuit blocking, and display circuit configuration. am.

me. Regarding the conversion power, conversion time, and operating current, the conversion time and operating current are 8.5A when a load of 100 kg is applied between operations and the load is gradually increased from a position of 20 mm before the end of the conversion to 500 kg at the end of the conversion. or less, and the sleep current must be less than 15A.

all. The conversion time when switching from rated voltage to operation by applying a load of 210 kg must be less than 7 seconds.

la. maximum conversion force

It must be possible to switch between operations at the rated voltage by applying a constant load of 400 kg.

mind. motor (electric motor)

(1) When the motor is switched to the rated voltage without load, the difference between left and right rotation currents should not exceed 10%.

(2) With the load applied, the motor must be switched continuously more than 2,000 times (at a rate of 5 to 6 times per minute) without cleaning, so that there is no problem and the temperature rise must be within the allowable range.

The items to be checked in the durability test of the track switch are as follows.

go. Even if a voltage of 1.3 times the rated voltage is applied and the switch is continuously switched more than 2,000 times (at a rate of 5 to 6 times per minute) in a no-load state, there should be no abnormality in each part.

me. In terms of rating, the display circuit contact switches the polarity relay (DC) on and off, and even if the switch is continuously switched under the load condition of paragraph 2) b) of 4.2.2 more than 200,000 times (at a rate of 5-6 times per minute), no abnormality occurs in each part. There must be no and the electronic clutch must comply with the following.

(1) When the rated slip torque is measured immediately after the test, it must be 2.55 Nm or more.

(2) When the minimum slip torque, rated slip torque, friction torque, and air gap are measured after returning to room temperature, they must meet the standard values.

(3) The change and deviation of the air gap before and after the test should be less than 0.2 mm.

all. In terms of rating, there should be no abnormality in each part even if the product is left continuously for more than 30 minutes with the operation interrupted.

Figure 2 is a schematic overall block diagram of an operation test device for a line switch according to an embodiment of the present invention. As shown in FIG. 2, a load cell 260 and a cylinder 250 are connected to the load side of the line switch 100. Load refers to a load that moves the line through the operation of the line switch motor 120.

The test control unit 220 transmits a direction change signal 222 in the forward or half direction to the line switch 100 and receives a direction confirmation signal 224 from the line switch 100.

Cylinder 250 may be a hydraulic cylinder.

The load cell 260 outputs an electrical signal in proportion to the compression between the cylinder 250 and the line switch 100, and the indicator 265 converts this into a load of Kg and displays it.

The distance sensor 257 measures the moving distance of the cylinder 250.

The hydraulic motor 255 generates and supplies the necessary hydraulic pressure to the cylinder 250.

The servo driver 230 controls the servo valve 240 according to the control command of the test control unit 220, and the cylinder 250 expands or contracts depending on the degree of opening and closing of the servo valve 240.

The test control unit 220 is connected to the integrated control unit 210, connected to the servo driver 230, and electrically connected to the line controller 100. The test control unit 220 may be a PLC (Programmable Logic Controller). The test control unit 220 also performs the function of an interface for data input/output. The test control unit 220 is connected to the integrated control unit 210 through the RS-232 protocol.

The control power supply 270 provides power for the overall integrated test device. The control power supply device 270 may be a 24V SMPS (switched mode power supply) that converts alternating current to direct current.

The integrated control unit 210 is connected to the test control unit 220 and performs a program for test operation, an operating system, graph display of test performance, and storage of test performance data. This integrated control unit 210 can be a personal computer and a monitor 212.

Figure 3 is a block diagram of the test device shown in Figure 2 broken down by module. As shown in FIG. 3, the control module 400 includes a breaker panel 410, an integrated control unit 210 and a monitor 212, a display panel 420, a slide dock 430, a switching circuit unit 440, and a test unit 440. A control unit 220, a servo driver 230, and a control power supply device 270 are provided.

AC 220 V, single phase, 60 Hz AC power is input to the breaker panel 410, and the main breaker has a capacity of 25 A and operates as a breaker in the event of a leak.

The display panel 420 displays the supplied input voltage, test voltage, test current, etc., and displays an indicator 265, an operation counter, etc. in relation to the load cell 260.

Slidedax 430 allows the operating power supplied to the line switch 100 to be manually converted.

The switching circuit unit 440 is a circuit electrically connected between the test control unit 220 and the integrated test module 300.

The hydraulic system 310 of the integrated test module 300 includes a hydraulic tank 312, a hydraulic motor 255, a hydraulic pump 314, a filter 316, a servo valve 240, a cooling pump 320, and a cooler. Includes (322). This hydraulic system 310 can be replaced with a pneumatic servo system. Additionally, the hydraulic system and cylinder 250 can be replaced with a linear servomotor.

Figure 4 is a front view of the control module 400 in Figure 3. As shown in FIG. 4, the control module 400 is configured inside the cabinet, with a display panel 420 at the top, and an integrated control unit 210 and a monitor 212 in the middle. In addition, a servo driver 230 and a circuit breaker panel 410 are provided, and a heavy slideax 430 and a control power supply device 270 are provided at the bottom.

Figure 5 is a perspective view of the base 340 in Figure 3. As shown in FIG. 5, a cylinder 250, a distance sensor 257, a load cell 260, and a servo valve 240 are installed on a flat base 340. The line switch 100 is installed on the base 340 to be detachable.

example movement

Hereinafter, the operation of the preferred embodiment will be described in detail with reference to the attached drawings.

In the integrated control unit 210, a sequence for sequentially testing the operation of the Korean Railway Standard KRS SG 0001 - 18 (R) is stored and executed.

First, the integrated control unit 210 issues a direction change command (direction) to the line switch 100 through the test control unit 220 and commands a certain load (eg, 100 kg) to the servo driver 230. The test control unit 220 controls the servo valve 240 (e.g., PID control) to apply a constant load. For this purpose, signals from the load cell 260 and the distance sensor 257 can be fed back.

The switching distance and switching speed of the motor 120 of the line switch 100 can be determined from the distance sensor 257, and the torque and applied load of the motor 120 can be determined through the load cell 260. .

The specific test is

(1) Durability test (no-load test)

- Separate the cylinder (250) from the integrated test module (300)

- Manually set the test voltage using Slideax (430)

- Test preparation is completed after measuring the set voltage using a test voltmeter.

- Repeat test execution by switching control power

(2) Operation test

- Connect the cylinder (250) to the integrated test module (300)

- Manually set the test voltage using Slideax (430)

- Test preparation is completed after measuring the set voltage using a test voltmeter.

- Test starts with control power switch

- Control test of servo valve (240) according to input values of distance sensor (257) and load cell (260)

- Measure test voltage and current using test voltmeter and test ammeter

(3) Durability test (load repetition test)

- This is a repetitive motion test.

The measured data in the time domain and data in the frequency domain are stored on the hard disk of the integrated control unit 210, displayed on the monitor 212, and can be transmitted externally through the Internet, etc. Additionally, an alarm may occur if the operation exceeds a certain range during the operation test.

The servo valve 240 may be controlled (e.g., PID control) to apply a constant load based on a feedback signal regarding the cylinder length and a compression force feedback signal from the load cell 260. Through this feedback control, a certain load is applied to the line switch.

A detailed description of preferred embodiments of the invention disclosed above is provided to enable any person skilled in the art to make or practice the invention. Although the present invention has been described above with reference to preferred embodiments, those skilled in the art will understand that various modifications and changes can be made to the present invention without departing from the scope of the present invention. For example, a person skilled in the art may use each configuration described in the above-described embodiments by combining them with each other. Accordingly, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The present invention may be embodied in other specific forms without departing from the spirit and essential features of the present invention. Accordingly, the above detailed description should not be construed as restrictive in all respects and should be considered illustrative. The scope of the present invention should be determined by reasonable interpretation of the appended claims, and all changes within the equivalent scope of the present invention are included in the scope of the present invention. The present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein. In addition, claims that do not have an explicit reference relationship in the patent claims can be combined to form an embodiment or included as a new claim through amendment after filing.

100: track switch,
110: control relay,
120: Line switch motor,
130: circuit controller,
200: integrated tester,
210: integrated control unit,
212: monitor,
220: test control unit,
222: direction change signal,
224: Direction confirmation signal,
230: servo driver,
240: servo valve,
250: cylinder,
255: hydraulic motor,
257: distance sensor,
260: load cell,
265: indicator,
270: Control power device,
300: Integrated test module,
310: hydraulic system,
312: hydraulic tank,
314: hydraulic pump,
316: filter,
320: Cooling pump,
322: cooler,
340: base,
400: control module,
410: circuit breaker panel,
420: display panel,
430: Slidedax,
440: Switching circuit unit.

Claims (7)

In the operation test device for the line switch,
A base 340 on which the line switch 100 is removably installed;
A test control unit 220 that instructs the operation of the line switch 100 and receives the operation direction;
Servo actuator means operating based on control commands from the test control unit 220;
A load cell 260 inserted into the load side of the servo actuator means and the line switch 100;
A distance sensor 257 that detects the travel distance of the servo actuator means;
It is connected to the test control unit 220, and operates the line changer 100 based on the operation instruction of the line changer 100, the received operation direction, and the output of the load cell 260 and the distance sensor 257. An integrated control unit 210 that controls and evaluates the test; and
Includes a slidex 430 that can convert and apply the operating power of the line switch 100,
The servo actuator means,
A servo driver 230 that receives control commands from the test control unit 220;
A servo valve 240 and a cylinder 250 connected to the servo driver 230; and
It includes a hydraulic motor 255 that supplies hydraulic pressure to the cylinder 250,
The load side of the line switch 100 is the motor 120 side of the line switch 100,
The cylinder 250, the distance sensor 257, the load cell 260, and the servo valve 240 are installed on the flat base 340,
The cylinder 250 operates so that a load of 100 to 500 kg is applied to the load cell 260,
The integrated control unit 210, the servo driver 230, and the slideax 430 are configured inside the cabinet, and
The operation test is based on the Korean Railway Standard KRS SG 0001 - 18 (R), the switching power, switching time, operating current, maximum switching power, and durability of the track switching device (100) in accordance with the test standards for NS-AM type switching devices. An operation test device for a line switch, characterized in that. delete delete delete delete delete delete

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