Load measuring method and device, railway vehicle equipped with load measuring device, and load management system
A technology for load measurement and railway vehicles, applied in measurement devices, rim measurement/measurement, and measurement of force components, etc., can solve problems such as the influence of measurement values, and achieve stable measurement, manufacturing and cost-effective, and easy to measure.
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Embodiment approach 1
[0035] First, the basic way of thinking of the above-mentioned load measurement method in Embodiment 1 will be described.
[0036] As disclosed in the above-mentioned patent documents, etc., the measurement method of the wheel weight and lateral pressure in the wheel of the railway vehicle has been proposed. Papers on the load on the axle bearings (Takahashi et al. "Estimation method for estimating the load acting on axle bearings using wheel load / lateral pressure (Wheel load / lateral pressure をUsing した Axle Axle に Action にか力にの实质の法)" , Railway Research Institute Report (Railway Research Report), Vol.25, No.1, Jan.2011). In this paper, the relationship between the wheel load and lateral pressure and the radial load and axial load acting on the axle bearing is shown in the formula, and it is recorded that the wheel load / lateral pressure can be calculated according to the value of the wheel load / lateral pressure. Radial load and axial load of the bearing.
[0037] According to t...
Embodiment approach 2
[0072] refer to image 3 , Figure 5 to Figure 7 A load measuring device capable of performing the load measuring method described above will be described.
[0073] image 3 shows the ability to perform figure 1 The schematic structure of the load measurement apparatus 102 of the load measurement method shown is shown. The load measurement device 102 includes an axial force measurement unit 110 , an axial load measurement unit 120 , and a calculation unit 150 .
[0074] The axial force measurement unit 110 is a device for measuring the force (axial force) acting in the axial direction (left and right direction) 13a of the axle 13 on the axle 13 between left and right wheels, and has an axial force sensor 111 and an output unit 112 .
[0075] The axial force sensor 111 can use, for example, a strain gauge that detects deformation of the axle 13 . Regarding this axial force sensor 111, as Figure 5 and Figure 6 As shown, a pair of such axial force sensors 111 can be mou...
Embodiment approach 3
[0091] The load measuring device 102 of the second embodiment described above includes the axial force measuring unit 110 and the axial load measuring unit 120 , and obtains only the respective lateral pressures of the left and right wheels 11 , 12 . In the load measuring device according to the third embodiment, as described above, the radial load is also obtained, and not only the lateral pressure but also the wheel weights of the wheels 11 and 12 are obtained.
[0092] That is, if Figure 4 , Figure 5 as well as Figure 8 As shown, the load measurement device 103 according to the third embodiment has a configuration in which the radial load measurement unit 130 is further added to the configuration of the load measurement device 102 according to the second embodiment. Therefore, the radial load measuring part 130 will be mainly described below.
[0093] In addition, with the addition of the radial load measurement unit 130 , the calculation unit 150 described above beco...
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