Full-speed anti-breakage tester for tires
Standard model and parameters Model and name Maximum test value Accuracy /% EHB-100A Standard dynamometer 10000kg0.3SZG-141B Digital speed 10000rmin-10.0222 Self test conditions Operating temperature 1035, the environment is dry, clean, no vibration. The load error is the difference between the load display value of the self-check equipment and the force value actually added to the drum. (1) Installation of EHB-100A standard dynamometer The standard dynamometer is fixed on the bracket. The dynamometer probe should be located on the plane formed by the central axis of the rim and the drum, with the end of the probe resting on the drum. On the other hand, the other end is in the direction of the rim, as shown. (2) Load detection Five load points are selected for load testing at each station. Combined with our factory's testing requirements for finished tires, select 1, 2, 3, 4 and 5t five measuring points on stations 1 and 2, and EHB-100A standard dynamometer installation rims; 2 standard dynamometers ;3 Brackets; 5 force points at 0.5, 0.8, 1, 1.5 and 2t are selected for 4 drums and 4 stations. The device applies load to the standard dynamometer from the rim via hydraulic transmission. When the device displays the selected forcing value Xi (i=15), the standard dynamometer reading Li is recorded separately. (3) Calculation of load error The relative load error i corresponding to each point is calculated according to formula (1): i(%)=Xi-LiLi100(1) The difference between speed display error value of the self-check equipment and the actual drum speed of the drum For speed error. (1) Measurement of speed The SZG-141B digital tachometer is portable, so it is not necessary to install. The reflective film is attached to the drum during the test, and the hand-held steady tachometer can be used. When the speed is measured, the drum speed should be used to obtain the standard value of the drum speed after the drum rotation is stable. According to the diameter of the drum, the standard line speed value at the outer edge of the drum can be calculated as vi is 0.3216 Ni. Measure 1 and 2 stations At the speed, the measuring speed vi given by the equipment starts from 50kmh-1, and the speed is increased by 20kmh-1 each time until the speed reaches 150kmh-1, and then the speed is increased to 160kmh-1. The standard speed of the drum is measured with a tachometer respectively. When measuring speeds at stations 3 and 4, the measuring speed vi given by the equipment starts from 80kmh-1, and each speed increases 20kmh-1 until the speed reaches 220kmh-1. At the same time, the standard speed value corresponding to each speed is recorded. The same method can calculate the standard line speed at each speed. (2) Calculation of velocity error The relative velocity error i corresponding to each point is calculated according to equation (2): i(%)=vi-vivi100=vi-0.3216Ni0.3216Ni100(2) Processing of self-test results Load detection points The absolute value of the corresponding load relative error is less than the load accuracy requirement, then the load detection is qualified; the absolute value of the speed relative error corresponding to each point in the speed detection is less than the speed accuracy requirement, then the speed detection is qualified. If one of the above inspection items fails, the equipment will be regarded as unqualified and must be readjusted and tested until all items are qualified. Compact Oven,compact toaster oven,built in gas oven,toaster oven,gas double oven Vast Dragon Trading Limited , https://www.builtinhob.com