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LBT-HW-101C Microcomputer-Controlled Safety Helmet Impact and Puncture Resistance Tester

The computer‑controlled safety helmet impact and puncture tester is primarily used to evaluate the helmet’s impact‑absorption performance and puncture resistance. It is widely employed by specialized labor‑protection‑equipment supervision and inspection stations, construction research institutes, construction‑project quality‑inspection agencies, power‑sector organizations, and safety‑helmet manufacturers. Reference standards include: GB/T 2812‑2024 “Test Methods for Safety Helmets,” GB 2811‑2019, EN 397, and ANSI Z89.1.

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Safety helmet testing equipment

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lbt@lbt.ltd

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LBT-HW-101C Microcomputer-Controlled Safety Helmet Impact and Puncture Resistance Tester

Description

Product Introduction

The computer‑based safety helmet impact and puncture tester is manufactured in accordance with GB/T 2812‑2024 and GB 2811‑2019, and is primarily used to evaluate the impact‑absorption performance and puncture resistance of safety helmets. It is widely employed by specialized labor protective equipment supervision and inspection stations, architectural research institutes, construction engineering quality testing centers, power utilities, and safety helmet manufacturers.

Host structure

1. The main structure of the equipment utilizes two φ50 mm optical shafts as the overall support.

2. The protective net employs a custom-designed panel structure, with cushioning strips around the perimeter of each panel, delivering superior performance compared to a standalone net structure.

3. The base is machined from a single piece of 45# steel, 20 mm thick, offering excellent impact resistance and enabling secure mounting of the force sensor.

4. The hammer head’s engaging mechanism employs a cross‑slide table design, allowing manual adjustment of the drop point in both the fore/aft and left/right directions.

5. The guide rails for the pull-in and release points move upward and downward, with the up-and-down motion controlled via the touch screen.

6. Equipped with one #1 and one #2 magnesium-aluminum alloy headform, both of which are repairable; also includes one impact hammer and one puncture cone for testing.

7. Equipped with an infrared laser positioning system, it can accurately locate the center of the safety helmet, ensuring that the hammer head strikes directly at the helmet’s center.

9. Experimental data can be stored and printed.

Measurement and Control System

1. A dual-control architecture comprising a computer and a PLC is adopted, with the computer primarily responsible for processing relevant test data and the PLC primarily managing the control of associated operations.

2. The PLC uses a Mitsubishi model, featuring built-in RAM with larger capacity and faster operating speed.

3. The dynamic force sensor utilizes a U.S.-made PCB ICP sensor, offering excellent stability and a long service life.

4. The sensitivity of the dynamic sensor can be calibrated via touchscreen input, making calibration convenient.

5. The impact height can be set via the touch screen and is raised electrically; when the set height is reached, the lifting process automatically stops.

Reference standard:

GB/T 2812-2024 “Test Methods for Safety Helmets,” GB 2811-2019, EN 397, ANSI Z89.1

Technical Specifications:

Parameter Category	Detailed specifications
Impact hammer	Weight: 5–5.01 kg; hammerhead: hemispherical, φ96 mm; material: 45# steel; appearance: symmetrical and well-proportioned.
Puncture hammer	Material: 45# steel; Weight: 3–3.05 kg; Puncture tip: cone angle 60°, cone tip diameter 1 mm, length 40 mm; Hardness: HRC 45
Sensor	Type: Dynamic force sensor; Range: 0–20,000 N; Frequency: Not less than 5 kHz; Accuracy: 1.5%
Data system	Sampling frequency: 20 kHz; sampling time: 50 ms; acquisition lower limit: 500 N
Impact height	0–1100 mm / 0–1500 mm, dual-range option, electrically adjustable
Test head phantom	Weight: 5.0 ± 0.1 kg; Height: 250 mm; Material: Aluminum–magnesium alloy; Features: Repairable after impact.
Equipment power supply	AC 220V, 50Hz

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★★★★★

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LBT-HW-101C Microcomputer-Controlled Safety Helmet Impact and Puncture Resistance Tester

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