The history of the development of Chinas electric hoist
The domestic electric hoist from the 1950s began to imitate the form of production and development. Shanghai General Machinery Plant in July 1949 the first successful trial imitation the Germany DEMAG Type K 1.5t and 3t general purpose wire rope electric hoist and invest in small batch production to converting steam turbine plant in 1954. Lifting equipment factory in Tianjin in 1953 (Tianjin seventh Machinery Factory) imitation of the former Soviet Union 40 years TB type the gourd trial 1t and 2t general purpose wire rope electric hoist, shaping the TV electric hoist. 1954 trial 3t and 5t gourd, 1957 to complete the design and production of a of 0.25t ~ 5t series products modify from TV appear as Chinas first generation of gourd.
Electric single girder gourd for the hoisting mechanism, domestic Tianjin lifting equipment factory earliest imitation of the 1940s, the former Soviet Union HK single girder crane truss, began trial production in 1954, 1956 mass-produced in 1957 by the Tianjin lifting equipment plant jointly with Beijing crane plant production drawings for the first time to modify stereotyped as A571 type (rectifying the first time) in 1957, Chinas first generation of electric single girder crane has been to stop production in 1987 was eliminated production (January 1987 No reproduction).
Gourd for the hoisting mechanism electric single girder suspension crane, the domestic still Tianjin lifting plant for the earliest imitation of the former Soviet Union the 1940s ΠK type truss single girder cranes, and a series of production for our first-generation electric single girder suspension crane, lifting chain, has been the production in 1987 was only eliminated discontinued (January 1987 No reproduction).
Tianjin, explosion-proof electric hoist lifting equipment factory design and production, and explosion-proof electric single girder suspension crane products have appeared in 1963. 1964 by Tianjin lifting equipment plant, lifting equipment factory in Shanghai, Chongqing crane factory, Dingxi Crane Factory, Xian Crane Factory, Shenyang Crane Factory and Beijing lifting transport machinery Joint Institute of Design, prototype and began producing the CD, MD Series hoist, CD, MD type gourd is Chinas second generation of hoist, lever hoist, the current mainstream products.
The A571 electric single chat the crane and ΠK electric single girder suspension crane with CD, MD type gourd supporting the use of, and there are many problems, such as the structure and performance reasons. DL-electric single-girder crane lifting equipment factory in 1974 by Tianjin updated on the A571 electric single girder cranes and K electric single-girder overhead traveling crane, designed and produced equipped with CD and MD-type gourd and DX electric single beam crane hoisted. Lifting equipment plant in 1976 on the basis of the DL and DX products via Tianjin trial open source crane factory, Chongqing Crane Factory, Changsha Crane Works crane factory in Luoyang and Beijing lifting transport machinery Joint Institute of Design and Production, 1977 stereotypes LD electric single girder crane and LX electric single girder suspension crane has become Chinas second-generation electric single girder cranes and crane hoisted products, has been producing still something domestic leading products. 1970s, China has successively developed LB explosion-proof electric single girder crane LXB explosion-proof electric single girder overhead crane LH electric hoist double girder crane products, etc.. Improvement of the domestic CD1/MD1 electric hoist series structure in 1975, the main configuration: tapered motor, straight tooth tone quality gear, cast iron rolls, cast shell, conical disc brakes, run the car hung; domestic HC QH ZH series structure improvements in 1990, configuration and 75 years; domestic AS introduction of electric hoist tandem structure 1983: tapered motor, straight teeth quenched and gear, cast iron roll tube welded frame housing, the conical disc brakes, hung or side hung running car.
LH electric hoist double girder crane is a crane factory in Wuhan, in the 1970s, designed and developed the HC electric hoist as lifting mechanism of Chinas first generation of electric hoist double girder crane.
From the late 1970s to the early 1980s, the hoist crane has entered into a new stage in the introduction of the development. Tianjin lifting equipment plant introduction Germany STAHL AS type the full range of electric wire rope hoist technology; Nanjing plant, lifting equipment factory and the Shanhaiguan lifting equipment plant the three joint introduction of the Germany DEMAG chain hoist; 1980s mid Nanjing Hoisting Machinery long joint design and development of the H-type wire rope electric hoist, Chongqing crane plant-based joint design and development of a hoist gantry crane products, Hebei Pentium lifting. The AS type the gourd technology has introduced the world advanced level in the 1980s, as the representative of the third generation of gourd bound to AS type.
Foreign electric hoist by Finnish Kone, Japan Meiden Germany SWF company in 2000 to 2001 for improvement. : Zhu squirrel cage cylinder motor, Helical hardened gears, steel pipe volume the 2000 coke parallel structure, motor on the roll internal tube, rod frame assembly housing, flat disc brakes, flat 2000 coke balance weight style pendant run the car, the level of wheel-oriented.