Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
  • B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
  • B61K9/04—Detectors for indicating the overheating of axle bearings and the like, e.g. associated with the brake system for applying the brakes in case of a fault
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
  • B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles

Definitions

• the present invention relates to a method of marking an object in relative movement with a marking agent or substance dispensed from a dispensing means, and more particularly to a method of dispensing a marking agent from a rail-bound vehicle onto a rail, or from a location at a distance from a rail onto a - rail-bound vehicle.
• Measuring stations located along the railway line incorporate devices which register the presence of faults of the aforementioned kind, for example, and emit a signal which can be observed by the train drivers, who must then stop the train and check which carriage or wheel is faulty, and disconnect the carriage in which the fault is found from the line of carriages, so as to prevent a possible derailment.
• the train driver is provided with information concerning the numerical location of the fault, counting from the ' end' of the train. This information is given by means of an electronic plotter or telewriter which is in communication with fault detectors of the aforementioned kind. Having received information as to which wheel axle or axles is or are faulty, the train driver must then wander from the end of the train - perhaps in the dark or in fog - and count the number of axles until he reaches that one which corresponds to the information received. Since a long train may include several hundred axles, it is understandable that counting errors are quite often made, and that the wrong carriage has been taken out of service. This results in a serious risk of derailment when the train is restarted.
• an object of the present invention is to provide a method of the kind aforementioned which avoids the disadvantages ' of known methods and enables an object in relative movement to be marked precisely, even at high speeds and/or when a high degree of accuracy is demanded when applying the marking substance.
• the marking substance is held under high pressure in the dispenser unit and is discharged from the nozzle when said nozzle is located at a distance of less than 35 cm, preferably less than 25 cm from said object to be marked, in the form of a readily identifiable adhes ble blob which will adhere to said object within- a time period of less than 35 milliseconds, preferably less than 25 milliseconds after a dispensing signal has been sent.
• the method according to the present invention is a great improvement over earlier known methods. Furthermore, because the marking agent is shot from the dispenser in the form of a blob - for example in the form of a blob of white paint - the marking is obtained as a readily identifiable, precisely located point from which accurate positional and/or length measurements can be made, when desired.
• the pressure in the dispenser valve is preferably so high that a blob " of marking substance will be shot from the dispenser even when the time lapse between two consecutive dispensing signals is of such duration that residues from a preceding marking operation have dried in the dispensing nozzle. Even though the apparatus has been in disuse for a long period of time and a plug has dried in the nozzle, this plug will be forced from the nozzle when said apparatus is again used.
• the method according to the invention is also superior in this respect to previously known methods, in which it is necessary to carefully clean the equipment when it has lain in disuse over an extended period of time. It will readily be understood that the necessity of disassembling the nozzle and cleaning the same each time the apparatus is used is problematic.
• Pressures of the magnitude envisaged can be obtained with the aid of known pressure boosters in the form of a pump which can be placed directly in the vessel containing the marking substance and which is supplied with a normal operating pressure of, for example, 6-8 bars via a regulator.
• a pressure of this order of magnitude, i.e. . 6-3 bars, can be applied, via an operating line, to a magnet valve which also serves as an operating valve and which is arranged to open the valve of the dispensing unit upon receipt of an electric signal, so as to dispense a blo'b of said marking substance, which is under said high pressure.
• the pressure booster continuously ensures that the required high pressure prevails in the dispensing chamber of the dispensing unit.
• said dispenser may be arranged to dispense a blob or jet of some other substance, for example a radio active substance or preparation, or a substance which emits radiation in the form of ultra-violet light and which can therefore be sensed or detected optically.
• a radio active substance or preparation for example a radio active substance or preparation, or a substance which emits radiation in the form of ultra-violet light and which can therefore be sensed or detected optically.
• the invention also relates to an arrangement for carrying out the method according to the invention, the essential characterizing features of said arrangement being set forth in the accompanying claims.
• Figure 1 illustrates in perspective the method according to the invention when applied for colour- marking an overheated bearing box in a set of carriages or a train unit.
• Figure 2 illustrates the invention in curve- depth measuring operations, etc., using a measuring trolley.
• Figure 3 is a principle diagram illustrating how the components incorporated in an arrangement according to the invention cooperate with one another.
• Figure 1 there is shown a rail carriage 1 having a wheel 2 which runs on a rail 3.
• the wheel 2 has an axle 4 on which there is provided a bearing box 5.
• the indicating means will thus send a signal to a dispensing unit 10 having a nozzle 10a which is level with the bearing box 5.
• the dispensing unit 10 receives said signal, the unit will dispense under high pressure a blob of paint, for example, which adheres to the bearing box.
• the distance between the nozzle 10a and the bearing box may be about 20 cm.
• the time lapse between the moment when the dispensing unit 10 receives a dispensing signal and the moment when the blob of paint meets the bearing box is only about 20 milliseconds. If the speed of the train is 160 km/hour, the bearing box will have moved through a distance of the order of 1 m during this time interval. The airstream generated by the train will have no influence, and the dispensed blob of paint will be dispatched to and adhere on the bearing box so as to be readily noticeable.
• the distance between the indicating means 6 and the dispensing unit 10 may be from 10 to 20 m, and the indicating means may be arranged to co-act with a means for calculating the speed of the ' train (not. shown) and-to decide, in dependence upon the result obtained, the point of time at which the dis- pensing signal shall be sent to the dispensing unit 10.
• Colouring substance e.g. paint, and propelling gas are supplied to the dispensing unit 10 from a container 15 which is placed under pressure from a nitrogen-gas container 19 via a regulator 18.
• a low- pressure line 24 extends from the regulator 18 to an operating valve (not shown) adjacent the dispensing unit 10.
• the colouring substance is supplied to the dispensing unit 10 from the container 15 via a line 11.
• the pressure in the line 11 supplying colouring substance to the dispensing valve may be approximately 10Q bars or more.
• Figure 2 illustrates an alternative use of the dispensing unit 10 for colour marking purposes, namely arranged on a trolley 1 for measuring the depth of curve of a railway track.
• the arrangement according to the invention is housed in a cabinet arranged adjacent the track.
• the cabinet housing the arrangement is placed on the trolley and is not shown in Figure 2.
• the dispensing unit 10 is also located at a distance of about 20 cm, or possibly less, from the rail 3, which will be marked with a blob of colouring substance at a location at which a curve-depth measurement is made and fed into a data processor associated with the measuring equipment.
• a curve-depth measurement can be made every 5 and when the -data processor has calculated the slewing values of corresponding locations, a following slewing machine can carry out the necessary slewing of the track at exactly tne correct location of the rails.
• FIG. 1 is a principle diagram of the components of an arrangement according to the invention, and shows how said components cooperate with one another.
• the dispensing unit 10 provided with nozzle 10a is supplied with marking substance, such as paint, under high pressure through a line 11 which is connected to the output side of a pressure booster in the form of a pump 16, -which is inserted into a paint container 15.
• Propelling gas for example air
• a pressure booster in the form of a pump 16
• a regulator 18 in which the pressure is reduced to 1-8 bars.
• This pressure is then applied to the pressure booster via line 17.
• Extending from line 19 is an operating line 24 for a magnetic valve 12, which is controlled by electric signals via a line 30.
• the pressure in the operating line 24 may be the same as the pressure in line 19, i.e. 6 to 8 bars.
• the object to be marked which may, for example, be a bearing box 6 according to Figure 1 or a rail according to Figure 2
• the components illustrated in the diagram shown in Figure 3 are arranged on the trolley 1 itself, the compressor of which (not shown) supplies the line 19.
• a measuring device (not shown) on the trolley 1 gives simultaneous signals for a measuring operation and, via line 30, for -dispensing a quantity of marking substance from the dispenser 10.
• the method according to the invention ca-n also be applied within, for example, the following fields; 1. Length-measuring indications registered by means of some type of measuring vehicle.

Landscapes

• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Coating Apparatus (AREA)
• Machines For Laying And Maintaining Railways (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20341132

Family Applications (1)

Country Status (3)

Family Cites Families (4)

• 1980
  • 1980-06-04 SE SE8004171A patent/SE8004171L/sv unknown
• 1981
  • 1981-06-04 WO PCT/SE1981/000167 patent/WO1981003470A1/en unknown
  • 1981-06-04 EP EP19810901491 patent/EP0061452A1/en not_active Withdrawn

Non-Patent Citations (1)

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