This equipment is developed according to the test requirements of the lateral rigidity and chin belt strength of the safety helmet in the new national standard GB/T2812-2006 “Safety Helmet Test Method”, which is used for the test of the lateral pressure resistance performance and the strength of the chin belt of the safety helmet. 【Relevant Standards】

GB/T2811-2007 Safety helmet GB/T2812-2006 Safety helmet test method

【Scope of application】: This equipment is developed according to the test requirements of the lateral rigidity and chin belt strength of the safety helmet in the new national standard GB/T2812-2006 “Safety Helmet Test Method”, which is used for the test of the lateral pressure resistance performance and the strength of the chin belt of the safety helmet. [Meet the standard]: GB/T2811-2007 Hard helmet GB/T2812-2006 Safety helmet test method [Instrument features]: 1. The microcomputer automatic control system is adopted, the test process is fully automatically controlled, and the whole process automatically collects, processes and analyzes the test data, without manual calculation. Fully automatic speed adjustment, after the test is completed, the test results are automatically displayed; Easy to operate and accurate data. 2. It is controlled by a microcomputer (i.e. microcontroller) and has a printing function. 3. The equipment adopts a new structural principle, which is the variable speed control of the servo motor, and the loading process is controlled by the microcontroller, and the loading speed can be adjusted infinitely. (Avoiding the constant speed control of ordinary motors used by some manufacturers and not in line with national standards) 4. The force measuring element adopts a high-precision special tensile force digital sensor imported from Germany, with an accuracy of 0.5%. One set of sensors can automatically complete the test, without disassembling the force value sensor, which is more convenient and intelligent to operate. 5. During the test, the instrument displays the real-time rate, real-time test status, and real-time test force value. 6. The instrument can display the test time, automatically lock the maximum force value, automatically calculate the deformation and residual deformation. 7. The lateral rigidity test report shows the standard requirements for the displacement between plates Y1, Y2, Y3, deformation D1 and residual deformation D2, and the test report can be printed directly. 8. The load when the jaw band is broken or loose is displayed in the strength test report of the jaw belt, and the test report can be printed directly. 9. The standard 1# head mold with stable support can be used in combination with the simulated artificial jaw. 10. The lateral rigidity test automatically calculates the displacement according to the pulse signal. 11. The loading rate and force value during the test fully meet the requirements of GB/T2812-2006 test methods 4.5.2 and 4.8.2. 【Technical Parameters】: 1. Measurement force range: 0~750N, measurement force accuracy: 0.5%. 2. Head mold for chin belt strength test: The shape and size parameters comply with the provisions of Appendix A of “GB/T2812-2006 Safety Helmet Test Method”, and the 1# head mold is selected. 3. Artificial jaw with strength test: a rigid shaft with a diameter of 12.5mm±0.5mm, parallel to each other and a distance of 75mm±2mm of axis. 4. The diameter of the metal plate for lateral rigidity test is 100mm, and the hardness is 45HRC. 5. Lateral rigid stroke: 100mm 6. Displacement display accuracy: 0.1mm 7. Time display accuracy: 1S 8. Working power supply: AC220V, 50Hz.