Multifunctional pit protective cover plate
The invention relates to a multifunctional pit protective cover plate which belongs to the field of safe production. The multifunctional pit protective cover plate respectively comprises a cover plate body, a safe guard body, a hinge (4), a locking pin (9), a rotating pin shaft (6), a fixed press sl...
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| Format: | Patent |
| Sprache: | chi ; eng |
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| Zusammenfassung: | The invention relates to a multifunctional pit protective cover plate which belongs to the field of safe production. The multifunctional pit protective cover plate respectively comprises a cover plate body, a safe guard body, a hinge (4), a locking pin (9), a rotating pin shaft (6), a fixed press sleeve (7), and the like. The multifunctional pit protective cover plate has functions of protection and warning during pit operation and has the function of coverage during non-operation. Compared with a general cover plate, the invention has the characteristics of light weight, high strength and safety, resolvability, convenient use, compact structure, and the like and prevents the potential safety hazard of pit drop fundamentally. |
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