8.Method for detecting step-shaped wear on contact strips on pantograph heads
Step-shaped wear on pantograph head contact strips can cause serious damage to the pantograph and catenary system. A method for detecting step-shaped wear has therefore been developed. In this method, step-shaped wear can be detected by measuring the axial forces acting on steady arms installed on three adjacent supporting points (Fig.1). This method has few constraints with regards to where it can be applied. In addition, a compact light-weight and power saving data acquisition device consisting of a dynamic strain amplifier and data telemetry system were also developed (Table 1, Fig. 2) to suit this new detection method. Fig.3 shows an example of the application of the new method and the device to a commercial railway line. When the system detects certain specific features in the forces exerted on the steady arm, the system immediately triggers and alert to the transport control centre etc.
Other Contents
- 1. Advanced seismograph for earthquake early warnings
- 2.Method for extracting vulnerable structures during earthquakes
- 3.Seismic reinforcement technology for earth retaining walls in narrow locations
- 4. Method for assessing tsunami damage to concrete bridges
- 5. Management of snowmelt for landslide prevention
- 6. Calculation of the aerodynamic coefficient on trains in half-bank half-cut line sections
- 7. Revision of evaluation criteria to check deterioration in lubricating grease used on trains
- 8.Method for detecting step-shaped wear on contact strips on pantograph heads
- 9.Improving lightening resistance of electrical equipment using new grounding structure
- 10.Proposal of method for diagnosing health of concrete masts for maintenance
- 11.On-board platform detection device to assist train crew in train door operation
- 12.Human factor analysis method using Potential Incidents Reports
- 1. Advanced seismograph for earthquake early warnings
- 2.Method for extracting vulnerable structures during earthquakes
- 3.Seismic reinforcement technology for earth retaining walls in narrow locations
- 4. Method for assessing tsunami damage to concrete bridges
- 5. Management of snowmelt for landslide prevention
- 6. Calculation of the aerodynamic coefficient on trains in half-bank half-cut line sections
- 7. Revision of evaluation criteria to check deterioration in lubricating grease used on trains
- 8.Method for detecting step-shaped wear on contact strips on pantograph heads
- 9.Improving lightening resistance of electrical equipment using new grounding structure
- 10.Proposal of method for diagnosing health of concrete masts for maintenance
- 11.On-board platform detection device to assist train crew in train door operation
- 12.Human factor analysis method using Potential Incidents Reports