Safety net impact test machine principle description (Qingdao)
Safety net impact tester principle description Article from Qingdao Zhongbang Instrument Co., Ltd. Technology Department First, the safety net impact test machine principle: The safety net impact tester utilizes a dedicated test device to allow the test steel ball to fall freely from the specified height into the test net, and to judge the impact resistance of the safety net according to the degree of damage. Second, safety net impact test machine test equipment: 1. Safety net impact tester test weight: 1.1 The surface is smooth, the diameter is (500 ± 10) mm, and the mass is (100 ± 1) kg of steel balls. 1.2 Cylindrical sandbags with a bottom diameter of (550±10) mm, a height of not more than 900 mm and a mass of (120 ± 1). 1.3 Factory inspection can use any of the above two test weights. 1.4 Type test, arbitration test, etc. shall use test steel balls. 2 , safety net impact test machine test hanger: The test weight can be lifted and released at the specified position to free fall. 3 , safety net impact test machine test framework : The length is 6m, the width is 3m, the height from the ground is 3m, and the rigid frame with the pipe diameter not less than 50mm and the wall thickness not less than 3mm is welded firmly. 4 , safety net impact test machine test samples: A flat or vertical net with a size of 6m x 3m, or a complete dense mesh that can be sold, used or in use. 5 , safety net impact test machine test method: 5.1 Test height (the distance from the bottom of the test object to the bottom of the initial drooping of the test net is the test height): 7m for the flat net, 2m for the vertical net, 1.8m for the A-class dense mesh, and B-level mesh 1.2m. 5.2 The impact point shall be the geometric center position of the sample. 6 , safety net impact test machine test steps: 6.1 firmly attach the test sample to the test frame; 6.2 the distance between the bottom surface and the installation plane of the sample net plus the initial sag of the sample net is equal to the test height, and then release the test weight to make it fall freely; 6.3 Observe the sample. 7. Evaluation of test results of safety net impact tester: Ping (立) net evaluation: the network rope, side rope and tether of the test net are not broken, and the test weight is not qualified to contact the ground; otherwise, it is unqualified; Dense mesh evaluation: A cube with a cross section (200 × 50) mm cannot pass through a tearing hole as a test pass. The test results are based on the test weight before lifting. The cube should not exert obvious external force when it passes through the tearing cavity. The copyright mentioned above is owned by Qingdao Zhongbang Instrument. If you arbitrarily copy and reprint without the consent of the company, you must be held liable! Am Deactivator ,Eas Am Deactivator,58Khz Deactivator,Am Eas Deactivator Wenzhou Boshine Electronic Security Co. Ltd , https://www.boshine.com