RAIL-MOUNTED LOAD-CELL SCALES

Abstract

The invention relates to apparatuses for the wheel-by-wheel weighing of railway wagons during motion. Essence: the scales comprise deformation sensors (2), temperature sensors (3) secured to working rails (1) by an adhesive process, polymer plates (6), metal plates (7) and controllers which are arranged externally to a rail track. Circuit boards (5) of the controllers are arranged on the working rails (1) in recesses formed by the polymer plates (6) and metal plates (7). Furthermore, the deformation sensors (2), temperature sensors (3) and circuit boards (5) of the controllers are hermetically encapsulated by means of said set of plates (6, 7). Technical result: simplification of the design and installation of scales and reduction in the probability of electrical interference in measuring networks.

Claims

1. Rail-mounted load-cell scales, comprising: strain sensors, temperature sensors secured to working rails by an adhesive process and encapsulated by means of a set of metal and polymer plates, and controllers arranged externally to a rail track, characterized in that circuit boards of the controllers are arranged on the working rails in recesses of said set of plates.

Description

SUMMARY

[0011] The essence of the invention is that circuit boards of controllers are arranged on both rails under a rail base in recesses formed by a set of protective plates, as shown (see FIG. 1) in a cross-section of a rail 1 in the region of a strain sensor 2 (patent RU2349874, entitled “Resistive-strain sensor”). The strain sensor 2 is attached to the web of the rail 1, and a temperature sensor 3 is coupled to a multicore communication cable 4 over which signals from the both sensors are provided to a circuit board 5 of a controller. A strain sensor and a temperature sensor on the opposite side of the rail 1 are identical to the strain sensor 2 and the temperature sensor 3. The whole group of the sensors is programmatically combined into a shearing-force sensor in the section shown in FIG. 1. A second shearing-force sensor is identical to the first one and spaced from the first one (within the space between cross sleepers) at a distance of not less than 0.2 m. Polymer plates 6 and a metal plate 7 constitute a set of plates by which four strain sensors, four temperature sensors and a circuit board of a controller are encapsulated in a sealed manner. The output of the circuit board 5 of the controller is provided with a single-core coaxial cable 8 coupled to a computer and a power supply. In total, the above-listed components constitute a wheel-load sensor (WLS). The external view of the both WLSs on the measuring section of the scales is shown in FIG. 2. The coaxial cables 8 (shown in FIG. 1) are not shown in FIG. 2.