Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
  • B61L1/00—Devices along the route controlled by interaction with the vehicle or train
  • B61L1/20—Safety arrangements for preventing or indicating malfunction of the device, e.g. by leakage current, by lightning
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
  • B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
  • B61L27/50—Trackside diagnosis or maintenance, e.g. software upgrades
  • B61L27/53—Trackside diagnosis or maintenance, e.g. software upgrades for trackside elements or systems, e.g. trackside supervision of trackside control system conditions
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
  • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
  • B61L5/02—Mechanical devices for operating points or scotch-blocks, e.g. local manual control
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
  • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
  • B61L5/04—Fluid-pressure devices for operating points or scotch-blocks
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B61—RAILWAYS
  • B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
  • B61L5/00—Local operating mechanisms for points or track-mounted scotch-blocks; Visible or audible signals; Local operating mechanisms for visible or audible signals
  • B61L5/06—Electric devices for operating points or scotch-blocks, e.g. using electromotive driving means

Definitions

• the invention relates to a method for analyzing a point drive of a rail switch. Furthermore, the invention relates to a points drive system with a measuring system for carrying out such a method and with a point machine for adjusting switch points of a rail switch.
• Manually or electrically operated point machines are used as the most important railway infrastructure elements to change over points.
• the required actuating force acting on an actuating rod is realized by means of an adjustable actuating force coupling. Over the service life of the point machine, which lasts up to 25 years, the set operating force may change. The actuating force may decrease over the life of the points drive. Because the
• the actuating force is relevant to the safety of the operation of the points and point machine, the force must be checked or checked by measurements. So far, the force of turnout drives had to be checked regularly. For this purpose, maintenance of a point machine must be organized and carried out. A measurement of the actuating force takes place on site with a measuring device and a force measuring pin. Depending on the measurement result, an adjustment of the actuating force coupling or an exchange of the entire point machine drive takes place.
• the object of the invention is to propose a method for determining a positioning force of a points drive, in which a direct intervention in an operation of the points drive is avoided.
• the object is achieved by the subject matters of independent ⁇ patent claims 1 and 10.
• Advantageous embodiments of the invention are the subject of the respective dependent subclaims.
• a method for analyzing a point mechanism of a rail switch is cege ⁇ represents.
• at least one sensor is provided for measuring sound waves.
• the sensor may be on an outer housing or in the outer casing of the point mechanism angeord ⁇ net.
• measuring signals of the at least one sensor are recorded during a positioning operation of the point machine.
• the measuring signals can be amplified. Ba ⁇ sierend on the recorded measurement signals of the at least one sensor, a force of a force coupling of the point mechanism is determined.
• a piezoelectric sensor can be used, which can measure the sound waves and vibrations generated during operation of the Weichenantriebs.
• a surface acoustic wave sensor may be used as the at least one sensor.
• the ⁇ like sensors can be inexpensive and robust against external influences, so that they can be used for use in the field of rail vehicles and rail networks.
• the vibrations and sound waves generated by the components of the points drive can spread over fasteners and the outer housing and measured there.
• the vibrations of a points drive motor the mechanical travel elements (eg.
• the at least one sensor can be calibrated based on measurement signals of a defined number of switching operations.
• a calibration may preferably depend on a defined n convinced set-actuating force of the actuating force coupling and components used in the points drive.
• the vibrations generated by the point drive motor are, according to a known engine running curve of Weichenan ⁇ drive motor, dependent on its speed. Based on the determined measurement signals of the at least one sensor, it is possible to determine a load level of the point machine drive motor and thus also the actuating force coupling. In particular, the at least one sen sors ⁇ deviations are detected by a standard setting mode at an early stage by the determined measurement signals.
• a contactless verification of a current actuating force of the actuating force coupling of the points drive can be performed.
• a manual over ⁇ test of the actuating force coupling which also represents a direct intervention in the operation of the point machine, can thus be avoided.
• feedback deviations can be minimized in a determination of the actuating force of the actuating force coupling.
• the at least one sensor is detachably arranged on an outer side of the outer housing of the points drive.
• an external fastening ⁇ tion of at least one sensor no changes to the outer housing and thus to existingstonenachwei ⁇ sen the points drive are required.
• the actuating force can thus be measured without a necessary change in the design of the existing point machine drive.
• already in service point machines can be checked or retrofitted according to the inventive procedural ⁇ ren.
• Im ⁇ planning for any electromechanical Weichenan- drive motors with power clutches is possible.
• the at least one sensor can be arranged detachably on the outer housing via at least one magnet , a belt or clamp that surrounds the outer housing, or a clamping connection.
• the at least one sensor can be glued to the outer housing temporarily or permanently.
• stored measuring signals of a plurality of changeover operations of the soft-ware drive for determining a maintenance requirement of the actuating-force coupling are compared with one another.
• a tendency or a deviation in the positioning operation can be detected.
• Actuating can be an indication of a technical defect or a future technical defect.
• causes for possible defects can be identified and eliminated at an early stage, thereby avoiding costs for a failure of the Weichenantriebs or a replacement of several components.
• a maintenance requirement of the actuating force coupling is determined when the minimum setpoint value of the determined actuating force falls below a minimum value. It can be calculated a ⁇ actuating force of the actuating force clutch based on the determined by the Minim ⁇ least one sensor measurement signals and a corresponding calibration of the at least one sensor.
• a maintenance requirement can be signaled if the calculated actuating force exceeds or falls below a defined setpoint. For example, a need for maintenance can signa- be linstrument, if the setpoint of the force is fallen below by a factor of 1.2.
• the stored measurement signals of a plurality of actuating operations Wei ⁇ chenantriebs advertising for determining a deterioration condition of the
• Actuator clutch used. Based on a plurality of monitored or checked Stell Sae the points drive, a tendency can be measured with respect to the vibration characteristic of the points drive. As a result, an event-related optimized maintenance can be realized independently of the components of the points drive. War ⁇ turing costs can thus be reduced and availability of the Weichenan ⁇ drive can be increased.
• the stored measurement signals of several Umstellvortician the point mechanism used to create a condition forecast of the actuating force clutch can be based on the measurement signals models of points machine and the wear ⁇ parts, such as the adjusting force, created. In this way, it is possible to produce a predictive state prognosis which makes it possible to make statements about a maintenance effort or a valid state with regard to a customer or a service provider. In particular, this can be realized by a continuous force monitoring.
• a future maintenance time is determined on the basis of the established state prognosis of the actuating force coupling. Based on time-offset measurement signals, a trend or a change in the force can be detected. From this, a time can be estimated when a maintenance of the switch ⁇ drive can be advantageous or necessary. It may be so-checked or existing service models through fact-based ana ⁇ analysis of the monitored point mechanism adapted.
• the determined information about the monitored point machine can be combined with other diagnostic data, such as from the program Sidis W compact, and used to optimize existing diagnostic programs. It can thus be a more accurate risk, state and
• the measurement signals of the at least one sensor on a exter ⁇ NEN server unit is stored and provided.
• the measuring signals or determined the resulting calculate ⁇ th restoring forces can be centrally collected from different force couplings and evaluated.
• the at least one sensor may be coupled to an off ⁇ evaluation electronics which the measuring signals obtained directly on the external server may transmit. In this way, a spatially independent evaluation of the measurement signals of the at least one sensor can be made possible.
• Weichenan- operating system with a measuring system for performing the method according to the invention and having a points drive for locking ⁇ provide at least two switch points of a railway turnout provided.
• the point machine has a turnout drive motor for direct or indirect driving connected to at least one switch blade actuator rod via an actuating force coupling.
• the point machine drive on a drive electronics for controlling and regulating the point motor drive, while at least the Weichenan ⁇ drive motor and the actuating force coupling are arranged in an outer housing of the points drive.
• the invention on the outer housing at least one sensor for measuring Schallwel ⁇ len attachable to and evaluated by a measuring electronics, wherein based on measurement signals of the at least one sensor, a
• Actuating force of the actuating force coupling during a control operation of the points drive is measurable.
• the measuring system can in particular have at least one sensor on ⁇ which is mountable to any surface in or on the Wei ⁇ chenantrieb. At least one sensor is connected to a measuring electronics, wherein the measuring electronics can enhance and record the measurement signals of the at least one sensor at least before ⁇ .
• the measuring electronics can be connected to a transmitting and receiving device so that the recorded measuring signals of the at least one sensor can be transmitted to an external server unit.
• the measuring electronics store the recorded measurement signals of the at least one sensor on a storage medium, such as a memory card, hard disk or cloud.
• the measuring system can be designed as a portable system for targeted checking of defined point machines or as a retrofit solution for permanent integration in a point machine.
• the measuring system can be coupled to the drive electronics to ⁇ of the switch drive motor, so that measurement signals listed specifically only during parking operations are characterized.
• the at least one sensor on the conspiracyge ⁇ housing can be placed.
• the at least one sensor can in be executed protected from environmental influences a sensor housing, so that a mounting or arrangement of the at least one sensor on an outer side of the outer housing of the Wei ⁇ chenantriebs is possible.
• the outer housing for making measurements must not be opened nor in his
• the point machine drive system can thus be used to position and operate a measuring system without direct intervention in an actuating operation of a soft-ware drive.
• the measuring signals may preferably be time-varying amplitudes of vibrations and sound waves, which can travel and be registered via fasteners and holders of components in the outer housing of the points drive up to the at least one sensor.
• the at least one sensor is a surface wave sensor.
• the at least one sensor may preferably be a sensor based on the piezo effect.
• the arriving at the at least one sensor vibrations and sound waves, a piezoelectric substrate of the at least one sensor me ⁇ mechanically stimulate, whereby the excitation can be generated corresponding voltage pulses and evaluated.
• the vibrations and sound waves may be surface acoustic waves can propagate to material surfaces.
• FIG. 2 shows a schematic flowchart of a method for analyzing a points drive according to a first embodiment.
• the 1 shows a perspective view of a Wei ⁇ chenantriebssystems 1 according to a first embodiment
• the switch drive system 1 here consists of a Weichenan drive 2 and, disposed on the switch machine 2 ⁇ measuring system. 4
• the points drive 2 has an outer housing 6, which is open to illustrate the components.
• the point machine 2 has a point drive motor 8.
• the point drive motor 8 is an electric motor and drives a lock slider 10 which is connected to an actuating rod to.
• the point drive motor 8 drives the control rod 10 indirectly via a gear, not shown, and via a mounted on ei ⁇ ner ball screw actuator force 12 at.
• actuating force coupling 12 By means of the actuating force coupling 12, a defined actuating force can be applied to the adjusting slides 10.
• the actuator clutch 12 can prevent damage to the switch drive motor 8 and the transmission when the lock slider 10 is blocked during a changeover operation.
• the points drive motor 8 is controlled by a drive electronics 14, when a signal for performing an actuating operation of a control center (actuator in Stell ⁇ factory) received.
• the setting slide (The control rod) 10 is connected according to the exporting approximately ⁇ for example with a switch blade 16, and may deflect the switch blade 16 transversely to the rail direction S of the rail 18 (scroll).
• the measuring system 4 consists of a sensor 20 and a measuring electronics 22.
• the sensor 20 is a SAW (Surface Acoustic Wafers) sensor 20 and is positioned by means of a magnet, not shown, on an outer surface of the outer housing 6 of the Wei ⁇ chenantriebs 2.
• the sensor 20 is coupled to the measuring electronics 22 so that the measuring signals determined by the sensor 20 can be recorded and processed by the measuring electronics 22.
• FIG 2 is a schematic flow diagram of a method 30 for analyzing a point mechanism 2 is shown in accordance with egg ⁇ nem first embodiment.
• the senor 20 is arranged on or in the outer housing 6 of the switch drive 2.
• the at least one sensor 20 is connected to the measuring electronics 22 32.
• the measurement signals of the at least one sensor 20 are received by the measuring electronics 22 and stored 33 after amplification and filtering.
• a restoring force of the force coupling is based on the recorded measurement signals 12 determines or calculates 34. This can be realized in particular by 22 to ⁇ before a calibration carried out the at least one transmitter sors 20 and the measuring electronics.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Automation & Control Theory (AREA)
• Health & Medical Sciences (AREA)
• Biomedical Technology (AREA)
• General Health & Medical Sciences (AREA)
• Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
• Railway Tracks (AREA)

Priority Applications (5)

Applications Claiming Priority (2)

Publications (1)

Family

ID=63685926

Family Applications (1)

Country Status (7)

Cited By (2)

Families Citing this family (2)

Citations (1)

Family Cites Families (5)

• 2017
  • 2017-09-29 DE DE102017217414.5A patent/DE102017217414A1/de not_active Withdrawn
• 2018
  • 2018-09-07 ES ES18778815T patent/ES2903446T3/es active Active
  • 2018-09-07 WO PCT/EP2018/074095 patent/WO2019063263A1/de not_active Ceased
  • 2018-09-07 EP EP18778815.3A patent/EP3661829B1/de active Active
  • 2018-09-07 CN CN201880062650.5A patent/CN111163993B/zh active Active
  • 2018-09-07 PL PL18778815T patent/PL3661829T3/pl unknown
  • 2018-09-07 AU AU2018340218A patent/AU2018340218B2/en active Active

Patent Citations (1)

Non-Patent Citations (1)

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