KR20190088177A - Device and Method for Testing Trolley Brakes - Google Patents

Abstract

The present invention relates to a trolley brake tester which aims to test a brake apparatus of a trolley vehicle used for repairing a railroad track, comprising: an external air pressure input coupling which may be connected to an external compressor which supplies air pressure; a main valve whose input side is connected to the external air pressure input coupling to have two outputs and to allow the air pressure to pass through or to block the air pressure; an air service unit ON/OFF valve whose input side is connected to a first air pressure output of the main valve; an air service unit whose input side is connected to an output side of the air service unit ON/OFF valve; a main air coupling connected to an output side of the air service unit to be connected to an air pressure hose to supply an air pressure to the brake apparatus of the trolley vehicle; a pressure controller ON/OFF valve whose input side is connected to a second air pressure output of the main valve; a pressure controller whose input side is connected to the pressure controller ON/OFF valve; an auxiliary air tank input ON/OFF valve connected to an output side of the pressure controller; an auxiliary air tank whose input side is connected to the auxiliary air tank input ON/OFF valve, which has a pressure gauge; a brake valve whose input side is connected to an output side of the auxiliary air tank; a brake pressure gauge whose input side is connected to an output side of the brake valve; a pilot coupling connected to an output side of the brake pressure gauge to be connected to an air pressure hose for supplying pilot air for controlling the brake apparatus of the trolley vehicle; and a release valve connected to an output side of the brake pressure gauge between the output side of the brake pressure gauge and the pilot coupling.

Description

Technical Field [0001] The present invention relates to a trolley brake tester and a trolley brake test method using the trolley brake tester.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley braking tester, and more particularly, to a braking tester for testing a braking device of a trolley, which is a device used for repairing a railway track.

Trolleys are used for the transportation of equipment and materials in the maintenance work of railway track. In railway technology, a trolley is a small, nonmotor vehicle designed to be able to ride on a railroad and to carry personnel, equipment, and materials for line maintenance.

To transport equipment and materials to and from the trolley, connect the trolley to the motor car. A motor car is a type of railway vehicle, which means a small, small-sized power car used to transport various materials and personnel for maintenance work on the track.

The trolley is equipped with a braking device similar to a conventional carriage, and the air pressure for operating the braking device is supplied from a compressor provided in the motor vehicle. Therefore, the trolley is provided with a coupling for connecting a pneumatic hose provided on a pneumatic line of a motor car, in addition to a device such as a coupling pin for mechanically connecting to a motor car, and if necessary, an electrical connector for receiving electricity from the motor car .

In order to ensure safe and smooth railway line maintenance work, the trolley needs to be regularly inspected periodically like other railway vehicles. The inspection procedure of the trolley is usually carried out in the order of top plate separation and bogie removal, axial disassembly inspection, wheel measurement, braking system disassembly and inspection, braking test, and top plate assembly. Particularly, the braking test is an important inspection to be.

The braking test of the trolley is carried out by wearing a motor car and connecting the trolley to the motor car and then operating the motor car. This controls the operation of the trolley braking device by the motor car, and the check value and the inspection values required during inspection of the trolley braking device, for example, the main air pressure, the pilot air pressure , The operating condition of the brake cylinder can be measured and checked by the motorcar.

In order to perform the braking test by connecting the trolley to the motor car, the motor car and the driver must wait for the braking test of the trolley only in the vicinity, so that the motor car and the driver can not be put into the line work during that time. There is an inefficiency in terms of utilization.

On the other hand, the motor car and its driver must work according to a tightly wired rail work schedule. Since the schedules must be modified to secure time for the trolley braking system test, There is a problem that it may not be able to be carried out. In addition, there are various problems that lead to inefficiency such as problems of consultation and proceeding of administrative procedures for negotiating schedule changes, fuel cost problems, and time required to move a motorcycle to a line work site.

In addition, the compressor must be operated to generate the pneumatic pressure, which means that the prime mover, that is, the engine mounted on the motor car, must be operated, and that the engine and the power transmission line are continuously exposed to the noise There is a risk that the trolley regular inspection worker complains of hearing loss and that the communication between the workers is not smoothly achieved due to the noise, thereby exposing the operator to a safety accident.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a trolley braking system capable of performing periodic inspection of a braking device of a trolley without a motorcycle, A trolley braking tester which can improve the trolley braking tester.

It is another object of the present invention to provide a trolley braking tester that minimizes noise generated during a trolley braking test to minimize the risk of hearing loss of workers and enables smooth communication between workers so that a safety accident can be prevented .

In order to achieve the above object, the trolley braking tester according to the present invention is a braking tester for checking a braking device of a trolley vehicle used for repairing a railway line, which can be connected to an external compressor for supplying pneumatic pressure External pneumatic input coupling; A main valve having an input side connected to the external pneumatic input coupling and having two outputs and capable of passing or blocking the pneumatic pressure; An air service unit ON / OFF valve having an input side connected to a first pneumatic output of the main valve; An air service unit having an input side connected to an output side of the air service unit ON / OFF valve; A main air coupling connected to an output side of the air service unit and to which a pneumatic hose for supplying air pressure to the braking device of the trolley vehicle is connected; A pressure regulator ON / OFF valve whose input side is connected to a second pneumatic output of the main valve; A pressure regulator whose input side is connected to the pressure regulator ON / OFF valve; An auxiliary air tank input ON / OFF valve connected to the pressure regulator output side; An auxiliary air tank having an input side connected to the auxiliary air tank input ON / OFF valve and having a pressure gauge; A brake valve having an input side connected to the auxiliary air tank output side; A braking pressure gauge whose input side is connected to the output side of the braking valve; A pilot coupling connected to an output side of the braking pressure gauge and to which a pneumatic hose for supplying pilot air for controlling the braking device of the trolley vehicle is connected; And a relief valve connected between the output side of the braking pressure gauge and the pilot coupling to the output side of the braking pressure gauge.

And a common air valve test coupling provided for branching between the output side of the air service unit and the main air coupling and having a general test air valve.

According to another aspect of the present invention, there is provided a trolley braking test method using the trolley braking tester, comprising the steps of: operating an external compressor to supply an external air pressure input coupling to an external pneumatic input coupling; Opening the main valve to supply air to the air service unit and filling the auxiliary air tank with compressed air; Operating the braking device relay valve mounted on the trolley by opening the brake valve to supply pilot air after the air pressure of the auxiliary air tank becomes equal to or higher than a predetermined pressure; And a part of the standby main air pressure supplied to the main air coupling through the air service unit is supplied to the brake cylinder through the relay valve so that the trolley brake is engaged.

Closing the braking valve after the braking operation of the trolley braking device is confirmed by the trolley braking step; Opening the solenoid valve so that the pressure air in the trolley brake cylinder is released to the atmosphere through the relay valve and the relief valve of the brake device; And removing the pneumatic pressure for operation of the braking cylinder to thereby ease the braking cylinder by the coil spring.

According to the trolley braking tester of the present invention as described above, it is not necessary to adjust the operation plan of the motorcycle for inspection of the trolley braking device. Therefore, the number of days of motorcycle use per year and the manpower of the motorcycle operator can be greatly reduced, Since the motor car is not required to wait, the motor car can be intensively put into line maintenance work, which is the main task, and the operation efficiency of the line work is greatly improved.

Since motorcars are not used at the time of inspecting the trolley braking device, noise generation is remarkably reduced, communication between the workers can be smoothly performed, and work safety is greatly improved.

In addition, if a portable type compressor that is portable and easy to move is used as an external compressor for checking the braking device by the trolley braking tester according to the present invention, one person can handle all equipment necessary for inspection of the trolley braking device , There is a great advantage that only one manpower can be input to the test of one trolley braking device to perform inspection work.

Further, since all the equipment necessary for the trolley braking test can be easily moved, the operator can move the trolley to the place where the trolley is located without moving the trolley to the designated inspection place, There is an advantage that the required manpower can be saved.

On the other hand, the trolley braking tester according to the present invention is advantageous in that only the equipment required for the braking function test is clearly arranged on the panel, so that the trolley braking tester can be easily carried and moved, and the progress of the braking test can be confirmed easily by eyes.

1 is a block diagram of a trolley braking tester according to the present invention.
2 is an embodiment of a trolley braking tester according to the present invention.
3 is a view showing air pressure flow during braking in the trolley braking tester according to the present invention.
FIG. 4 is a view showing an air discharge flow at the time of dynamic compensation in a trolley braking tester according to the present invention.

Hereinafter, a trolley brake tester according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of a trolley braking tester according to the present invention, and FIG. 2 is an embodiment of a trolley braking tester according to the present invention.

The present invention relates to a braking tester for checking a braking device of a trolley vehicle used for repairing a railway track. The braking device (not shown), which is the object of the braking test in the present invention, may be an IBS-5 relay valve (not shown), a compression load valve (not shown), a braking cylinder to a bogie And when the pilot air pressure is supplied to the relay valve to actuate the relay valve, a part of the main air pressure is supplied to the brake cylinder through the relay valve so that the brake of the brake device is engaged. During release, the air pressure, which has been filled in the braking cylinder, is released into the atmosphere, which relaxes the braking cylinder by the force of a coil spring (not shown) that operates to move the braking cylinder in the opposite direction to the braking engagement . The load-bearing valve is a standard device that can be mounted on a conventional carriage by adjusting the braking force according to the load of the trolley to maintain the proper braking force at all times. Since the structure of such a trolley braking device is well known, a more detailed description and illustration are omitted.

The trolley braking tester 100 according to the present invention includes an external pneumatic input coupling 110, a main valve 120, an air service unit ON / OFF valve 130, an air service unit 140, a main air coupling 150 A pressure regulator ON / OFF valve 210, a pressure regulator 220, an auxiliary air tank input ON / OFF valve 230, an auxiliary air tank 240, a brake valve 250, a braking pressure gauge 260, A coupling 270 and a relief valve 310, and the like.

The external pneumatic pressure required for operation of the trolley brake tester 100 according to the present invention is supplied from an external compressor (not shown). The compressor also supplies a pilot air for the braking signal to operate the pilot line devices, such as a relay valve, which controls the operation of the braking cylinder, while supplying a pilot for operating the braking cylinder. Since the compressor is connected to the internal combustion engine or the electric motor and operated, the pneumatic hose connected to the air output of the compressor can be extended to a considerable length, so that the operator performing the trolley braking test can not use the noise Can be minimized.

The pneumatic pressure generated in the external compressor is connected to the external pneumatic input coupling 110 of the trolley braking tester 100 according to the present invention.

The main valve 120 has an input side connected to the external pneumatic input coupling 110 and having two outputs such as a first pneumatic output 123 and a second pneumatic output 125, The air pressure input through the air inlet 110 can be passed or blocked to the two outputs. The first pneumatic output 123 is a port for outputting the main air and the second pneumatic output 125 is a port for outputting pilot air.

The injector is supplied to the main air coupling 150 via the air service unit 140 and to the main air line of the trolley braking device through a pneumatic hose connected to the main air coupling 150.

The air service unit 140 includes a filter unit 143 for maintaining the cleanliness of the main air, a pressure adjusting unit 145 for adjusting the pressure of the main air, oil for lubricating the brake unit in the form of mist (MIST) And a lubricating portion 147 for supplying the lubricating oil to be mixed.

An air service unit ON / OFF valve 130 is provided between the main valve 120 and the air service unit 140 to control supply / interruption of the main air. The input side of the air service unit ON / OFF valve 130 is connected to the first pneumatic output 123 of the main valve 120 and the output side is connected to the input side of the air service unit 140.

The main air coupling 150 is connected to the output side of the air service unit 140 and the main air coupling 150 is connected to a pneumatic hose for supplying air pressure to the braking device of the trolley vehicle. The main air pressure of the trolley is slightly different depending on various conditions such as the type of the braking device, but in one embodiment, it is supplied at a pressure of about 7 kg / cm 2. Such adjustment of the main air pressure and maintenance within a predetermined range, And is performed by the pressure adjusting unit 145 in the service unit 140.

Alternatively, a general air valve test coupling 190 branched from the output side of the air service unit 140 may be provided. The general air valve test coupling 190 may be used to test air components other than the trolley brakes, such as air valves. The air service unit 140 is disposed upstream of the general air valve test coupling 190 in the general air component test air line branched from the general air valve test coupling 190, that is, at the output side of the air service unit 140, A conventional test air valve 180 may be provided to pass or block the compressed air supplied to the general air valve test coupling 190 from the test air valve 190.

A pressure regulator 220 is connected to the second pneumatic output 125 of the main valve 120 so that the pressure of the pilot air pilot signal for operating the relay valve of the braking device can be maintained within a predetermined range. The pressure of the pilot air can be maintained at about 2 kg / cm 2 in one embodiment.

A pressure regulator ON / OFF valve 210 may be provided between the main valve 120 and the pressure regulator 220 to pass or block the pilot air supplied to the pressure regulator 220. In this case, the input side of the pressure regulator ON / OFF valve 210 is connected to the second pneumatic output 125 of the main valve 120, and the output side is connected to the input side of the pressure regulator 220.

The output side of the pressure regulator 220 is connected to the auxiliary air tank 240. The auxiliary air tank 240 is provided with a pilot air supply unit 240 that can operate the pilot device of the braking device for a predetermined period of time even when the external compressor operates in no idle state, .

The auxiliary air tank 240 is provided with an auxiliary tank pressure gauge 243 so that the air pressure in the auxiliary air tank 240 can be checked and also the auxiliary tank release valve 245 is provided so that, So that the air pressure in the auxiliary air tank 240 can be discharged to the atmosphere.

The auxiliary air tank 240 may be formed to have a volume of about 20 L in one embodiment. Since the auxiliary air tank 240 has a large volume, it is preferable that the auxiliary air tank 240 is not integrally coupled to the trolley braking tester 100 according to the present invention, Port may be desirably connected in a detachable manner in view of the transportation and storage aspects. An example of the configuration in which the auxiliary air tank 240 is detachably connected through the input / output port is shown in FIG. 2 shows a pilot air port connected to the input side and the output side of the auxiliary air tank 240 and the auxiliary air tank 240 located outside the trolley braking tester panel according to the present invention is not shown.

An auxiliary air tank input ON / OFF valve 230 is provided between the output side of the pressure regulator 220 and the input side of the auxiliary air tank 240 to supply the pilot air whose pressure has been adjusted via the pressure regulator 220 to the auxiliary air tank 240. [ (Not shown).

A brake valve 250 is provided on the output side of the auxiliary air tank 240 so that the pilot air for controlling the braking operation of the trolley braking device can be passed through or blocked to the pilot coupling 270. A braking pressure gauge 260 is provided on the output side of the braking valve 250 so that the pilot air passing through the braking valve 250 and sent to the pilot coupling 270 can be checked whether the proper pressure is maintained.

On the output side of the braking pressure gauge 260, there is provided a pilot coupling 270 to which a pneumatic hose for supplying pilot air for controlling the trolley braking device can be connected. A braking signal air pressure of about 2 kg / cm 2 is supplied to the braking device of the trolley, for example, the relay valve through the pilot coupling 270, so that the borehole can be supplied to the braking cylinder.

A relief valve 310 is connected between the output side of the braking pressure gauge 260 and the pilot coupling 270 at the output side of the braking pressure gauge 260. The relief valve (310) opens at the time of the trolley wringing and allows the air in the braking cylinder to be discharged to the atmosphere.

The brake valve 250 and the relief valve 310 are operated so that the passage / shutoff state is not compatible with each other. That is, at the time of braking engagement, the brake valve 250 is opened to supply the pilot air to the braking device of the trolley, and at the same time, the relief valve 310 is shut off. The release valve 310 is opened while the air in the trolley brake cylinder is released to the atmosphere through the relief valve 310. [ When the brake valve (250) and the relief valve (310) are at the same time in the passing state or at the same time in the blocking state, neither the braking operation nor the brake actuation can be performed. The pilot air supplied through the brake valve 250 is released to the atmosphere via the relief valve 310 and is not supplied to the trolley braking device. If both of the brake air and the brake fluid are blocked, The pilot air can not be supplied through the relief valve 310 and the release of compressed air through the relief valve 310 can not be performed.

The trolley braking tester 100 according to the present invention having the above-described structure includes a main air coupling 150 to which a main gear for actually braking the trolley braking device is supplied, and a pilot coupling Since the ring 270 is constituted by separate lines, it is possible to easily identify the operation state of the brake tester without concern about malfunction during operation of the brake tester for brake device validation.

In addition, the trolley braking tester 100 according to the present invention is constituted by a minimum number of equipments necessary for inspection of braking devices such as various valves, auxiliary air tank 240, braking pressure gauge 260, etc., Can be easily replaced, and thus, there is an advantage that semi-permanent use is possible.

The trolley braking test method using the trolley braking tester according to the present invention will be described with reference to FIGS. 3 to 4. FIG.

FIG. 3 is a view showing the air pressure flow during braking in the trolley braking tester according to the present invention, and FIG. 4 is a view showing an air discharge flow in the trolley braking tester according to the present invention.

First, the trolley braking test method for braking engagement will be described.

First, the external compressor is operated to supply the main air supply to the external pneumatic input coupling 110 (S110).

Subsequently, the main valve 120 is opened to supply a main air supply unit to the air service unit 140, and the auxiliary air tank 240 is filled with compressed air (S120).

After the air pressure of the auxiliary air tank 240 becomes equal to or higher than the predetermined pressure, the brake valve 250 is opened to supply the pilot air to operate the brake relay relay mounted on the trolley (S130). At this time, the predetermined pressure of the auxiliary air tank 240 will be a pressure set by the pressure regulator 220, for example, about 2 kg / cm 2 mentioned above.

When the relay valve is operated by the pilot air, the air is supplied to the main air coupling 150 through the air service unit 140, and a part of the standby main air pressure is supplied to the brake cylinder through the relay valve, (S140).

As a result, the operation of the trolley braking device during braking is checked. It should be noted that, in the inspection of the trolley braking operation as described above, the relief valve 310 must be kept in a blocking state at all times.

Next, it is checked whether or not the operation of the trolley braking device during the wrist rest is abnormal.

To this end, after the braking operation of the trolley braking device is confirmed by the trolley braking step, the braking valve 250 is shut off (S210).

Next, the solenoid valve 310 is opened to allow the pressure air in the trolley brake cylinder to be discharged to the atmosphere through the relay valve of the braking device and the relief valve 310 (S220).

When the air pressure for operation of the braking cylinder, i.e., the pilot air, is removed, the braking cylinder is actuated by the main air pressure at the time of braking engagement so that the coil spring in the elastically deformed trolley braking device is restored to its pre- The braking device is solved (S230).

Although the embodiments of the trolley braking tester according to the present invention have been described with reference to the accompanying drawings, it should be understood that the present invention is not limited by the exemplary embodiments and that the scope of the present invention is limited only by the following claims It should be noted that it is determined by description.

100: Trolley braking tester 110: External pneumatic input coupling
120: main valve 123: first pneumatic output
125: Second pneumatic output 130: Air service unit ON / OFF valve
140: air service unit 143: filter unit
145: pressure adjusting part 147: lubricating part
150: Main air coupling 180: General test air valve
190: General air valve test coupling
210: pressure regulator ON / OFF valve 220: pressure regulator
230: auxiliary air tank input ON / OFF valve
240: auxiliary air tank 243: auxiliary tank pressure gauge
245: auxiliary tank release valve 250: brake valve
260: Braking pressure gauge 270: Pilot coupling
310: Relief valve

Claims (4)

A braking tester for checking the braking device of a trolley vehicle used for repairing a railroad track,
An external pneumatic input coupling connectable to an external compressor supplying pneumatic pressure;
A main valve having an input side connected to the external pneumatic input coupling and having two outputs and capable of passing or blocking the pneumatic pressure;
An air service unit ON / OFF valve having an input side connected to a first pneumatic output of the main valve;
An air service unit having an input side connected to an output side of the air service unit ON / OFF valve;
A main air coupling connected to an output side of the air service unit and to which a pneumatic hose for supplying air pressure to the braking device of the trolley vehicle is connected;
A pressure regulator ON / OFF valve whose input side is connected to a second pneumatic output of the main valve;
A pressure regulator whose input side is connected to the pressure regulator ON / OFF valve;
An auxiliary air tank input ON / OFF valve connected to the pressure regulator output side;
An auxiliary air tank having an input side connected to the auxiliary air tank input ON / OFF valve and having a pressure gauge;
A brake valve having an input side connected to the auxiliary air tank output side;
A braking pressure gauge whose input side is connected to the output side of the braking valve;
A pilot coupling connected to an output side of the braking pressure gauge and to which a pneumatic hose for supplying pilot air for controlling the braking device of the trolley vehicle is connected; And
A relief valve connected between the output side of the braking pressure gauge and the pilot coupling to an output side of the braking pressure gauge;
The trolley braking tester comprising: The method according to claim 1,
Further comprising a general air valve test coupling provided for branching between an output side of the air service unit and the main air coupling and having a general test air valve. A trolley braking test method using the trolley braking tester of claim 1,
Actuating the external compressor to supply the main air to the external pneumatic input coupling;
Opening the main valve to supply air to the air service unit and filling the auxiliary air tank with compressed air;
Operating the braking device relay valve mounted on the trolley by opening the brake valve to supply pilot air after the air pressure of the auxiliary air tank becomes equal to or higher than a predetermined pressure; And
A part of the standby main air pressure supplied to the main air coupling through the air service unit is supplied to the braking cylinder through the relay valve so that the trolley brakes are engaged;
And the trolley braking test method. The method of claim 3,
Closing the braking valve after confirming the braking operation of the trolley braking device by the trolley braking step;
Opening the solenoid valve so that the pressure air in the trolley brake cylinder is released to the atmosphere through the relay valve and the relief valve of the brake device; And
The braking cylinder is relieved by the coil spring by removing the air pressure for braking cylinder operation;
Further comprising a trolley braking test method.

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