Helmet safety is crucial in various industries, and each component of the helmet plays a specific role in ensuring user protection. The quality of a helmet is thoroughly tested using specialized detection instruments to meet safety standards. Below is a detailed overview of the key structures and their functions, along with the testing methods used:
- **Cap**: Designed to absorb impact by separating the falling object from the head, reducing the risk of injury.
- **Hood**: Keeps the helmet securely in place on the head, ensuring proper alignment during use.
- **Top Strap**: Distributes the force of an impact and helps keep the cap shell floating, enhancing shock absorption.
- **Cushion**: Provides additional protection by minimizing the effects of direct impact.
These components are tested for their impact absorption and puncture resistance using the **ZM-811 Helmet Impact Puncture Tester**, a critical tool in our testing equipment.
- **Rear Hoop**: Acts as a locking mechanism for the headband, ensuring the helmet remains stable.
- **Lower Chin Strap**: Helps maintain the helmet's position on the head, preventing it from shifting during movement.
The strength of these chin straps is evaluated using the **ZM-813 Helmet Chin Strap Strength Tester**.
- **Sweatband**: Designed to absorb sweat and improve comfort during prolonged use.
- **Wearing Height**: Refers to the vertical distance from the forehead to the top of the head. If too low, it may interfere with vision or cause discomfort; if too high, it can affect the helmet’s stability. This measurement is taken using the **ZM-816 Helmet-Mounted Height Gauge**.
- **Vertical Spacing**: Measures the gap between the inner part of the helmet and the top of the head. Too little space may reduce ventilation, while too much can affect balance. This is measured with the **ZM-816 Helmet Vertical Distance Gauge**.
- **Horizontal Spacing**: Provides cushioning during lateral impacts and also serves as a cooling channel, improving comfort and safety.
In addition to structural tests, helmets must also pass special performance evaluations such as **flame resistance, anti-static properties, and electrical insulation**. These are tested using the **ZM-817 Helmet Fire Resistance Tester**, **ZM-818 Safety Cap Anti-Static Tester**, and **ZM-819 Hard Hat Electrical Insulation Tester** respectively.
Before conducting impact absorption and puncture tests, helmets undergo **pre-treatment tests** to simulate real-world conditions. Common pre-treatment equipment includes the **ZM-820 Helmet UV Irradiating Box**, **ZM-821 Helmet High Temperature Pretreatment Box**, and **ZM-822 Helmet Cryogenic Water Immersion Pretreatment Tank**.
This article is produced by **Qingdao Zhongbang Instrument Co., Ltd.** If you wish to reproduce this content, please cite the source and obtain permission beforehand.
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