专利名称：SPRING GROUP STRUCTURE FOR JIB LIFTING WITHOUT POWER
发明人：CHENG, WENHUA
申请号：CN2010/000694
申请日：20100518
公开号：WO2011/130882A1
公开日：
springframework和springboot20111027
专利内容由知识产权出版社提供
专利附图：
摘要：A spring group structure for jib lifting without power includes spring group fixing structures (B1, B2), a jib fixing structure (C), roller mechanisms (A1, A2), a jib (L), and a complementary angle spring group (K1, K2). The complementary angle spring group
(K1, K2) is composed of two springs, one end of which is connected to the spring group fixing structures (B1, B2) by the roller mechanisms (A1, A2), the other end of which is connected to the jib (L). One end of the jib (L) is connected to the jib fixing structure (C), and the other end of the jib (L) is connected to a load (G). The complementary angle spring group can completely balance the weight of the load during the whole process of lifting, and the operator can move the load upwards and downwards by overcoming the little rolling friction resistance at the support point and the roller without electric power and electric control elements. The spring group structure has low cost, and it is convenient to detach and move and easy to operate.
申请人：CHENG, Wenhua，程文华
地址：Room 202, No. 11 Alley 835 Shagang Road Yangpu District Shanghai 200433 CN，中国上海市杨浦区沙岗路835弄11号202室, Shanghai 200433 CN
国籍：CN,CN
代理人：SHANGHAI CPTO INTELLECTUAL PROPERTY AGENCY LTD.，上海精晟知识产权代理有限公司
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