Gate hoist, hoist, also known as the gate is a large-scale water conservancy gate hoist machinery products related to the normal operation of hydraulic structures, in addition to lifting equipment should be designed to meet the general requirements hoist gate, safe and reliable and flexible operation of special significance. Gate hoist be classified according to different characteristics: ① Press the operation of the power can be divided into labor, electrical, hydraulic. ② Press the power transmission can be divided into mechanical transmission and hydraulic transmission. Mechanical transmission is divided into belt drive, chain drive, gear and transmission combinations. Hydraulic oil can be divided into transmission and hydraulic transmission. ③ Press hoist installation conditions can be divided into fixed and mobile. China is often named in such a classification hoist. ④ Press gate and hoist connection can be divided into flexible, rigid and semi-rigid connection. ⑤ divided into categories according to the characteristics of the gate gate hoist plane, radial gate hoist and miter gate operating machinery. Usually accustomed to its comprehensive feature named gate hoist winch to operate the equipment, such as screw hoist, chain hoist, hoist winch, hydraulic hoist, trolley hoist , gantry hoist (crane) and so on. Gates, hoist installation of a construction program, install a structural coating gate door and gate slot embedded parts of the processing according to the design drawings and "steel surface before painting Rust grades and preparation grades" (GB8923-88) thermal spray coating alloy of zinc and its test method (GB9793-9794) and "hydraulic metal structure corrosion specification" (SL105-95) requirements. After painting the former newspaper Engineer approval before starting work surface coating. Paint and other dangerous goods transport by certified personnel car purchase. Metal installation personnel qualifications, quality control personnel with state departments issued qualification certificates. Operating personnel trained examination certificates. Strict quality control personnel and qualified operator examination report lists the Engineer for the record, the number to meet the construction requirements. Second, a surface preparation, pre-installation screw hoist should install parts of rust, scale, oil, slag, dust, moisture and other contaminants removed. Gate surface rust grade should reach DL / T5018-2004 article 7.1.3 and 7.1.4 stipulates standards; doors, chassis and other major structural components rust grade should meet the standard DL / T5019 requirements. 2. When the installation begins, if the inspection found that the surface of the steel rust contamination or return should be reprocessed hoist until the supervisor approved so far. 3, when the air relative humidity exceeds 85%, the steel surface temperature below the dew point above 3 ℃, the surface may not pretreated. Screw hoist, hoist Kunming, Guangzhou Fu Fu students by students Environmental Engineering Limited. Environmental Protection Engineering Co., Ltd. Guangzhou Fu students (www.fushengyuan.com) strong, credible, in Guangzhou environmental monitoring equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the rich into the brilliant students and you work for a better future!