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 Posted: Thu 7:46, 09 Dec 2010 Post subject: tory burch shoes Keep track Weighing Dynamic Weigh |
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Keep track Weighing Dynamic Weighing Technology
Fruit 2. Shear force load cell measurement principle when the vehicle through the weighing area, the rails are bent due to bending load, the part above the neutral axis of rail under pressure, the part below the neutral axis by the tension in the neutral axis not under pressure and not pull. Therefore, the neutral axis position can be installed in the rail shear force load cell, shear force signal size by weighing. Rail waist measurement of shear force and application of an early start in the country, there are conical shear plug hole sensors. In support of the two sleepers in the rail neutral axis location of processing end of tapered hole, then finished conical shear plug into the hole sensor, when the load moves in the rail,[link widoczny dla zalogowanych], the output signal and synthesized signal as shown in Figure 2. Figure 2 shows the synthesis of the two sensor signals shear steep rising and falling, while the rail outside the weighing by the load even if the effect on the synthesis of the two shear force sensor signals impact minimal. So. r the shear stress measurement techniques that solve the more the two issues mentioned above, one with a steep rising and falling, the second is a small neighborhood load of c but tapered hole and installation of processing quality angle and preload control will directly affect the performance of weighing load cell pressure / \ ----------__/ \ ------- a Kids in 13. Shear and compression load cell load cell force measurement method based on the principle of principles and characteristics of the two measurement techniques, while overcoming the first two measurements is too short in the shortcomings of the weighing area, the shear force and weight can be used pressure sensors and load cell weighing complex method. Each end of the track to set up a shear load cell, sensor in the set between two pairs of vertical shear force sensor, shear force load cell weighing amidine responsible for certain tasks, the main role is to be a steep rising edge and falling, pressure gauge load cell weighing is charged with the main task. Weighing the length pass through the vertical force of change in vertical ridge salt sensor pad 2 Kids in the number of locusts be adjusted to achieve the purpose of extending the weighing area of the compression load cell performance easy to be guaranteed, said shear force weight sensor output signal in the small proportion of composite signal, so the method of continuous composite rail track scale dynamic stability is improved, weighing speed and improved weighing accuracy. After the weight of the two analog signals (A / D conversion) or the number of 'g ~ (A / D conversion after) superimposed to form an integrated weighing area. Weighing principles continue to rail track shown in Figure 3 under the force balance principle, there is: = 0l + port 2 + Rl + R2 + ... + where: an integrated load weighing area; QI, Q2 for the rail within the shear; R. ... For the support reaction force pressure sensor. Force area length L = n × L one. Where a h: h is generally the rail height: f the sleeper spacing: n for the sleeper width; ? of excessive length of the integrated load area mat Siegesbeckiae 2 Figure 3 Third, keep track keep track scale rail track scale schematic circuit shown in Figure 4. 8 (or more, according to needs) compression load cell pressure in parallel access channel, four shear shear force sensor in parallel access channels, respectively, amplification, filtering and A / D conversion,[link widoczny dla zalogowanych], through the Parallel connection 121 into the computer, the computer ratio of shear stress within the digital synthesis. And algorithm,[link widoczny dla zalogowanych], the computer through a steep rising and falling, collecting data to determine a starting point and end point, the data acquisition time interval, the general synthesis of the data points the average of the algorithm, the last known value obtained. Figure 4 IV rail track scale structures continue to keep track because most of the dynamic track scale is not a solid foundation and solid stopper, and in actual use will be the fulcrum of stability and the stability of channel bed, so constantly in the design rail track scale structure should fully consider these factors. The constant current mode rail station complex dynamic rail scale, steel pillow boxes are generally used as an alternative to steel frames or concrete sleepers,[link widoczny dla zalogowanych], and the use of vertical interconnect hang the steel frame structure to form a link, which is characterized not only ensure the support of the pitch stability, and strengthen the integrity of the track bed. Pressure sensors on steel pillow support rails, sleepers outside the neutral axis of rail drilling, installation of shear stress sensor. Steel pillow to prevent the relative displacement of rail, rail against the installation of weighing both sides of the climb. To ensure that no more than the drunk rail gauge and set the stopper in steel pillow. V. Conclusion keep track of Durham Road and the common rail track scale compared with the measurement accuracy, good stability, low cost, easy installation,[link widoczny dla zalogowanych], do not interrupt traffic, had no impact and do not value measured not limited to the advantages of speed, and the Public Works Maintenance So easy maintenance and equipment continue to rail track scale is ideal road rail vehicle dynamic measurement of the quality scale.
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