多用释放滑车是一种具有释放负载能力的起重工具,它不仅应用于矿山卷扬机、手摇绞车等运输机械以及中小型设备或物品的安装起重,尤其在不能卸载的场合使用更显示出其独特功效,如在海上投放仪器或重物。因此产品为换代产品,于1990年7月18日获中华人民共和国专利局实用新型专利证书。 Multi-purpose release trolley is a kind of lifting tool with capacity to release load. It is not only used in the lifting and lowering of transport machinery such as mine winch and hand winch, but also small and medium-sized equipment or articles, especially in the occasion of unloading Unique features such as putting instruments or weights on the sea. Therefore, the product is a replacement product, on July 18, 1990 by the People’s Republic of China Patent Office utility model patent certificate.