2022 registered safety engineer technology gold test point dangerous parts of linear motion, note Anshi Xueba, long press to like + forward + comment for continuous updates, click on my avatar in the Wendang version and send me a private message: 2022
(1) Cutting blade: When maintenance is required on the cutting tool, special fixtures are required.
(2) belt sanding machine : moves away from the operator and has a non-return device.
(3) Mechanical worktable and ram: The distance between the end face of the flat plate (or ram) and the fixed structure should not be less than 500 mm to avoid extrusion.
(3) Dangerous parts of rotation and linear motion
(1) rack and gear: The rack and gear should be completely enclosed with a fixed protective cover.
(2) belt drive : The danger occurs at the belt joint and where the belt enters the pulley.
The protective cover of the belt transmission device can be a protective net with a metal frame, and the distance from the belt should not be less than 50mm.
Generally, if the transmission mechanism is less than 2m from the ground, a protective cover should be installed. The following three situations should be protected even if they are more than 2m above the ground:
1) The distance between the center distances of the pulleys is more than 3m;
2) The belt width is more than 15 cm;
3) The belt rotation speed is more than 9 m/min .
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