Cantilever hanging bridge inspection equipment lifting conservation trailer by trailer, support frame, cantilever, telescoping vertical beam on the cantilever can be stacked into a working platform and swing drive mechanism consisting of vertical beams inside. Each member can be reduced stack work on feature taillights and brake mechanism trailer towing vehicle by pulling on the highway for long-distance transport trailer containing aerial lifting equipment, so that the bridge inspection maintenance equipment flexible scheduling, and without disassembly on the bridge construction site commissioning of industrial lifting equipment, shipped to the site can be put into operation, greatly improving the detection of bridge maintenance work efficiency, but also with a compact professional equipment lifting, stacking rapid, safe and can better adapt to the characteristics of different work surface work. Chinese hoist crane development Shijie Shao 1950s is starting hoist cranes in China, and it is modeled on. Before the founding of New China, hoist crane is a gap in our country, can be described as nothing, and the early 1950s in order to copy the copy of the Soviet similar products started. 1949, July former general machinery plant in Shanghai, China crane expert trial out imitation of the German company's third-generation products DEMAG K-type wire rope hoist, which is China's first own manufacture wire rope hoist, the plant also have a small group of children production of lifting the 1.5t and 3t general purpose wire rope hoist, but converting the plant from 1954 Turbine reproduction without electric hoist. 1953 Tianjin Lifting Equipment Factory (Tianjin three stone by the formation of a number of small factories in Tianjin Machinery Factory was renamed seventh) began in the 1940s the Soviet Union counterfeit products TB-type wire rope hoist, the year has been trial and produced products 1t and 2t 1954 trial also produced 3t and St products. The early 1950s, China's TB code for TB, then incurable tuberculosis, TB Soviet-type hoist B letters with Chinese pinyin pronunciation Russian alphabet V, so at that time it will be replaced by TV TB type electric wire rope gourd. Tianjin plant in 1957 completed a TV type 0.25-5t, SIN type 10t (double drum hoist two 5tTV type Combination) trial and produce a full range of products. Since Yao Jin lifting equipment factory production of the first generation of China's Li wire rope hoist manufacturers. Lifting equipment factory in Tianjin in 1954 in succession copy of the Soviet-type truss HK electric single girder cranes and ⅡK electric single girder overhead crane, 1956 has been able to produce batches basin supply. Lifting equipment installation _ Shandong Lu more professional (certified) _ Jinan lifting equipment lifting equipment provided by Shandong Lu mechanical equipment installation Limited. Shandong Lu Machinery Installation Co., Ltd. (www.sdlzqz.com) Shandong Jinan, industrial maintenance, installation of leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Lifting leadership in Shandong Lu staff warmly welcome all inquiries negotiations to create Shandong Lu lifting a better future.