Installation for the automatic evaluation of the rolling band on wheels of moving trains
First Claim
1. An installation for the automatic evaluation of the condition of the rolling band on wheels of moving trains, especially for the detection of cracks in said rolling band, which comprises a support structure made of steel, consisting of a rail beam (1) for each railway line (8), replacing a section of the line and over which the flange of the train wheels (9) is made to run, assuring continuity between the rail beam and the railway line by means of a bolted joint (3);
- a guard-rail (2) attached to said rail beam to ensure guidance of the wheels while they move, bearing with their flange against the rail beam;
feelers (P) adapted to come into contact with the wheels passing over them;
feeler holders (4) installed on the rail beam and each provided with two guides (5) and a swinging spring (6), such that the passage of the wheels over the feelers forces and assures contact between the wheels and the feelers;
ultrasonic equipment (12) to transmit to the passing wheels, ultrasonic pulses with programmable frequency and duration and to generate and acquire ultrasonic plots corresponding to the wheels;
a local processor (13) to control the ultrasonic equipment and receive from it, generated digital signals from the ultrasonic plots;
a computer (14) connected to the local processor for transmitting activation orders of the ultrasonic, equipment, collecting, organizing and storing measurement results and generating pertinent reports; and
an antenna (15) connected to the computer to identify measured train compositions, said ultrasonic equipment (12) being designed for generation, acquisition, and processing in real time, said ultrasonic signals for the execution of non-destructive testing of materials and comprising an analog part (16) and a digital part (17), said analog part comprising analog treatment modules (18) for treating the ultrasonic signals to be acquired, including programmable gain amplifiers for prefiltering, detection, logarithmic amplification, and channel, multiplexing stages, said digital part including a bus (21) with segmented architecture and a set of dedicated processor modules (MP0, MP1, MP2, . . . ) said bus consisting of segments separated by board bases over which the processor modules are housed, said analog part (16) being housed on an analog base card (BANG) serving as a support for the analog modules through a series of slots (SL0, SL1, SL2, SL3, . . . ) with respective analog channels (CN0-1, CN23, CN4-5, CN6-7, . . . ) and further comprising a stabilized voltage generation system for supply to the analog modules, input channel selection circuitry (27) and an analog module (28) for envelope detection, said modules being governed through a control bus (29) of the analog base card.
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Accused Products
Abstract
An installation for the automatic evaluation of the condition of the rolling band on wheels of moving trains. It comprises a rail beam (1) for each railway line (8), a guard-rail to assure wheel guidance, feelers (P1, P2, P3, P4) intended to come into contact with the wheels passing over them, feeler holders fitted on the rail beam, to ensure wheel-feeler contact, ultrasonics equipment (12) to transmit ultrasonic pulses towards the wheels and to generate the corresponding ultrasonic plots, a local processor (13) to control the ultrasonics equipment and to receive the ultrasonic plot signals generated, a computer (14) connected to the local processor to manage the ultrasonics equipment, and an antenna (15) connected to the computer to identify the compositions of train measurements. The invention is useful to detect cracks in the rolling band of railway vehicle wheels.
22 Citations
13 Claims
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1. An installation for the automatic evaluation of the condition of the rolling band on wheels of moving trains, especially for the detection of cracks in said rolling band, which comprises a support structure made of steel, consisting of a rail beam (1) for each railway line (8), replacing a section of the line and over which the flange of the train wheels (9) is made to run, assuring continuity between the rail beam and the railway line by means of a bolted joint (3);
- a guard-rail (2) attached to said rail beam to ensure guidance of the wheels while they move, bearing with their flange against the rail beam;
feelers (P) adapted to come into contact with the wheels passing over them;
feeler holders (4) installed on the rail beam and each provided with two guides (5) and a swinging spring (6), such that the passage of the wheels over the feelers forces and assures contact between the wheels and the feelers;
ultrasonic equipment (12) to transmit to the passing wheels, ultrasonic pulses with programmable frequency and duration and to generate and acquire ultrasonic plots corresponding to the wheels;
a local processor (13) to control the ultrasonic equipment and receive from it, generated digital signals from the ultrasonic plots;
a computer (14) connected to the local processor for transmitting activation orders of the ultrasonic, equipment, collecting, organizing and storing measurement results and generating pertinent reports; and
an antenna (15) connected to the computer to identify measured train compositions, said ultrasonic equipment (12) being designed for generation, acquisition, and processing in real time, said ultrasonic signals for the execution of non-destructive testing of materials and comprising an analog part (16) and a digital part (17), said analog part comprising analog treatment modules (18) for treating the ultrasonic signals to be acquired, including programmable gain amplifiers for prefiltering, detection, logarithmic amplification, and channel, multiplexing stages, said digital part including a bus (21) with segmented architecture and a set of dedicated processor modules (MP0, MP1, MP2, . . . ) said bus consisting of segments separated by board bases over which the processor modules are housed, said analog part (16) being housed on an analog base card (BANG) serving as a support for the analog modules through a series of slots (SL0, SL1, SL2, SL3, . . . ) with respective analog channels (CN0-1, CN23, CN4-5, CN6-7, . . . ) and further comprising a stabilized voltage generation system for supply to the analog modules, input channel selection circuitry (27) and an analog module (28) for envelope detection, said modules being governed through a control bus (29) of the analog base card. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- a guard-rail (2) attached to said rail beam to ensure guidance of the wheels while they move, bearing with their flange against the rail beam;
Specification