The LBD type explosion-proof electric single-beam crane is based on the national standard GB3836.1-2000 "Explosion-proof electrical equipment for explosive atmospheres-Part 1: General requirements", GB3836.2-2000 "Explosion-proof electrical equipment for explosive atmospheres-Part 2: Partition Explosion-proof "d"" regulations and JB/T10219-2001 "Explosion-proof Beam Crane" are made into single-beam cranes with explosion-proof grades dⅡCT4 and dⅡBT4. The explosion-proof motors and explosion-proof electrical appliances used in this product have all obtained national explosion-proof electrical Explosion-proof certificate issued by the Product Quality Supervision and Inspection Center. Manufacturing license issued by the State Administration of Technical Supervision. This product is suitable for lifting and lowering heavy objects in the factory when there is an explosive mixture of flammable gas, steam and air specified in the table to ensure sufficient safety.
The LBD type explosion-proof electric single-beam crane is used in conjunction with electric hoists in the form of BH, BMH, BCD, BMD, etc. It is a light and small crane that runs on rails. Its suitable lifting weight is 1-10 tons, and its applicable span is 7.5-22.5 meters. , The working environment temperature is in the range of -20℃--+40℃. In order to facilitate the user, there are two control modes: ground and control room. The control room is also equipped with two modes of opening doors on the end and side for users to choose and use.
The explosion-proof electric single-beam crane consists of four parts : metal structure, explosion-proof electric hoist , operating mechanism, and electrical equipment.
(1) Metal structure part
The main beam is made of U-shaped channel steel rolled from steel plate, and then assembled with I-beam to form a box-shaped solid web beam. The beam is also rolled with steel plate into U-shaped channel steel, and then assembled and welded into a box-shaped beam, which is convenient for storage and transportation. The main beams are connected by M20 bolts (high-strength bolts) to form a whole.
(2) Explosion-proof electric hoist
The explosion-proof electric hoist can lift heavy objects and move longitudinally along the main beam. See the relevant explosion-proof electric hoist manual for its structural characteristics.
(3) Operating agency
This product adopts separate driving mode. The driving and braking are all completed by the flameproof cone-rotor three-phase asynchronous motor. The transmission adopts "one open and one closed" gear transmission, and the closed gear part is operated by a 5 ton hoist. The reducer of the trolley part.
(4) Electrical equipment
The running motors used in this product are single-speed and double-speed flame-proof cone-rotor motors (used for running speeds of 10 and 20 m/min, and other special speed requirements can be specially designed for users). There are two types of motors depending on the type of operation. This kind of electric control, the electric hoist and the whole crane are equipped with safety devices, such as lifting limit switch, end limit switch and so on.
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