Gate hoist lifting power of the main parameters, gates open or decrease (closed) traction or pressure is applied, the opening and closing stroke and opening and closing speed. When selecting the type of hoist hoist, the main consideration of the following factors: the gate form, sealing size and operating conditions, the same number and type of gate opening set fan gate count, the number of gate lifting ear, stop force, and opening and closing stroke opening and closing speed, hoist power status, locations of spatial scales and other operating requirements. Screw hoist can be divided into: flashlight dual screw hoist hand push screw hoist, hoist side shaking, such as several manual screw hoist directly or via a threaded rod guided slide , link with the shutter door leaf connected mobile screw up and down to open and close the gate of machinery. Supported within the bearing nut screw, nut and drive mechanism (bevel gear or worm gear) fixed to the support frame. Powered or hand crank drag human transmission, drive the bearing nut rotates, the screw lift gate to open and close. Screw tension member is under pressure, under pressure required to force the gate dropped when calculating stability struts. Simple screw hoist, rugged gate hoist, low cost screw hoist for small plane gate and gate, its lifting power is generally less 200kN. 500kN, 750kN high capacity screw hoist has been produced for the dive hole flat gate and radial gate operation. Hoist a basic installation requirements. Former factory hydraulic hoist, should be completely assembled and tested, after inspection and approval before they leave the factory. Manufactured products must have certificates and product brochures. 2. Hydraulic hoist transported to the scene, according to the "standard" provisions, combined with the specific circumstances of the arrival of equipment, inspection or decomposition of its body and hydraulic components, cleaning, pressure test. 3. Hydraulic hoist electrical equipment installation, testing, quality rating, should existing relevant national and industry standards and norms implemented. Electrical contacts of electrical contacts setting values ??should be consistent with "standard" or design requirements. Screw hoist, hoist Yangjiang, rich students provided by the Environmental Protection Engineering Co., Ltd. Guangzhou Fu students. 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!