A device for testing the reliability of baby carriage safety belt and restraint system

Abstract

The invention relates to a device for testing reliability of a safety belt and a binding system of a baby carriage. The device comprises a directly-driven motor (DDR), an intelligent driver, a set ofhigh-speed silent screws, a set of linear bearing guide rods and a pair of quick-fixing fixtures (upper and lower fixtures), an S double-connection hole type force measurement sensor (a foil gauge type sensor), an amplifier and a data processing system are utilized to complete measurement, upper and lower limit positions of the device are respectively provided with a proximity switch, the equipment is guaranteed not to carry out over-travel operation, safety of equipment operation and testers is guaranteed, a man-machine dialogue mode is employed, so the force value and time and the repeated experiment frequency in the pulling process can be accurately guaranteed. The device is advantaged in that artificial interference is eliminated, data confirmation is directly utilized, and detection accuracy and efficiency are greatly improved.

Description

technical field [0001] The invention relates to a device for testing the reliability of safety belts and restraint systems of baby carriages. Background technique [0002] With the continuous development of my country's economy, the continuous improvement of people's living standards, and the liberalization of the second-child policy, the public's demand for strollers is also increasing, and the upgrading of baby carriages is getting faster and faster. More emphasis has been placed on the safety belt and restraint system reliability of baby carriages is one of the important items to determine whether it is qualified or not. At present, the method of testing the reliability of baby carriage seat belts and restraint systems according to standards mainly uses the mode of manpower + stopwatch. The standard requires a fixed force value to be gradually applied within a fixed time, and is required to be maintained for a long time; some also have distance position requirements, spee...

AI Technical Summary

Problems solved by technology

If the manpower + stopwatch mode is used, there will be the following disadvantages: 1. It is not difficult for a human hand to hold the dynamometer. The difficulty is to apply a fixed force evenly within a fixed time, and the force accuracy cannot be controlled during the force application process.

2. The standard requires the force to be maintained for a long time. Whether it is maintained for 1min or 5min, the human arm is easily fatigued, and it is impossible to guarantee the stability of the force within this period, and the test time must be accurately grasped.

3. For the performance requirements of the adjustment mechanism, it is also required to repeat 10 times. If it is still necessary to adjust the distance and apply force manually, it will be inaccurate and time-consuming.

The existing tension method has cumbersome operations in the detection method and the data rely on human judgment, and the accuracy of the data is not high

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