LBT-HW-171B Comprehensive Static and Dynamic Impact‑Resistance and Penetration‑Resistance Tester for Safety Harnesses

Product Introduction

Manufactured in accordance with GB/T 6096 and GB 5725, it is primarily used for conducting overall dynamic load (seatbelt impact) tests, overall static load tests, as well as impact resistance and penetration performance tests on safety nets. It is widely employed by specialized labor protective equipment supervision and inspection stations, research institutes of construction science, construction engineering quality testing stations, power‑related departments, and other relevant organizations.

Reference standard:

GB/T 6096 “Fall Protection — Test Method for the Performance of Safety Harness Systems”

GB 5725 “Safety Nets”

Technical Specifications:

Operating steps

Safety net impact resistance test:

1. Use the descent button on the control panel to lower the hook to its lowest position, engage the release mechanism, and then place the test ball’s suspension ring over the release mechanism’s locking pin. Press the up‑arrow key on the remote control to lock the test ball in place, then press the raise button on the touch screen to lift the test ball. For safety, ensure no personnel are standing beneath the test ball. Stop lifting once the ball has reached a height above the test grid.

2. Place the sample in position:

Secure the sample to the lower frame (6 m × 3 m) using tethering ropes wrapped around its perimeter. Note: When attaching the ropes, ensure that each rope bears load as evenly as possible.

3. Adjust the test ball’s position directly above the test grid to the zero‑point location specified in the experimental requirements, then press the height‑zeroing button on the screen to reset the height to zero (i.e., define the current position as the zero point). Press the set‑height button to specify the desired lifting height. Finally, press the start button to initiate the lift; the system will automatically stop once the set height is reached.

4. Press the down-arrow button on the remote control to release and drop the test ball, completing one trial.

Observe the specimen and record the results:

If further testing is required, repeat the above steps; otherwise, turn off the power and implement appropriate rain‑proofing and protective measures for the relevant components.

Safety net puncture resistance test:

1. According to the test requirements, place the safety net on a 1-square-meter test rig, then set another 1-square-meter frame on top and secure it with clamps. Use two clamps per side of the frame. (Note: The secured safety net should be neither too tight nor too loose.)

Pick up the test probe, place it beneath the magnet, turn the knob to the ON position, remove your hand from the probe, then turn the knob to the OFF position to allow the probe to fall freely. Inspect the sample being tested, record the experimental results, and conclude the test.

Safety-Driven Dynamic Load Testing:

2. To conduct the safety‑related dynamic test, first secure the lifting assembly (threaded lifting eye) to the sensor (for the 3.06‑m beam). Pass the lifting eye beneath the beam, then tighten it and lock the nut. Next, use the supplied U‑shaped fastener (U‑bolt) to mount the 3.06‑m beam onto the 3‑m‑high frame, positioning it near the central upright. Any screws on the round tube that interfere should be removed.

1. Verify that the dynamic control line and the dynamic sensor line are properly connected.

2. Secure the dummy with a seat belt and fasten it to the sensor’s lifting ring using a shackle.

3. Adjust the position of the release mechanism: Use the control buttons on the lifting device to perform “raise” and “lower” operations, positioning the release mechanism so that it can smoothly engage with the manikin wearing a safety harness. Press the down-arrow button on the remote control to open the release mechanism, then hook the steel wire rope from the manikin’s neck onto the release. During suspension, ensure the manikin’s chest faces toward the back of the frame. Once securely hung, press the up-arrow button on the remote to lock the release mechanism and proceed to the test state.

4. Elevating the manikin: Press the height‑reset button to reset the height, then press the set‑height button to specify the desired height. Next, press the raise button to lift the manikin to the set position; the lifting process will stop automatically.

5. Mark the locations specified in GB/T 6096-2009 according to the specific test items to be evaluated.

6. Press the down-arrow button on the remote control; the release mechanism will disengage, and the microcontroller‑based data processing system will begin acquiring and analyzing the force data from the dynamic load cell. The maximum impact force value will be automatically stored. A delay time can be set to trigger an automatic return to the initial position.

7. After 5 minutes, measure the fall distance, assess any slippage relative to the marked reference point, and observe and record the condition of the safety harness.

8. To perform the next test, press “Reset,” then repeat steps 2–6. If you do not wish to continue testing, please turn off the power switch.

If you will not be conducting further experiments for an extended period, please set down the manikin, unplug the power cord, disconnect the dynamic control cable (aviation connector) and the sensor cables, and store the sensors and other equipment properly.

Seat belt static load test:

1. Put the safety harness to be tested on the manikin, and secure the manikin in the appropriate position according to the following test‑specific fixation procedures.

(1) Static Load Test of Full-Body Harness for Working at Heights

① Attach the eye bolts to four locations on the manikin’s back and buttocks, and remove the remaining ones.

② Position the manikin with its legs facing upward, placed horizontally on the elevated base plate. Connect the corresponding eye bolts using U‑shaped shackles to complete the installation of the manikin.

(2) Overall static load test of fall‑arrest harnesses

① Attach the eye bolts between the manikin’s legs and on its neck; remove all other components.

② Place the manikin’s legs vertically downward, and connect the suspension eye bolts between the legs and the base plate using wire ropes and wire rope clips to complete the installation of the manikin.

(3) Regional Restriction Seat Belt Overall Static Load Test

① Attach the eye bolts to four locations on the manikin’s chest and legs, and remove the remaining ones.

② Place the manikin with its legs facing downward, horizontally on the base plate. When positioned horizontally, the legs should align with the edge of the base‑plate frame, and the chest should be centered on the base plate. Connect the corresponding eye bolts using U‑shaped shackles. The manikin is now fully installed.

2. Install and connect the static lifting device, and securely attach the crane’s hook to the safety harness.

3. Operate the control buttons labeled “Raise” and “Lower” to adjust the position of the loading device, ensuring it can be smoothly connected to the seat belt, and then hang the seat belt on the sensor‑equipped hook.

4. According to the GB/T 6096 standard, mark the corresponding positions on the safety harness (if not required, skip this step).