Supply 100-800 double beam brake drum

Our large supply of suitable bridge, gantry crane 5-500 tons 100,200,300.400,630 brake wheel diameter for Dalian, Shanghai, Henan drawing production of cranes. The product quality is reliable, versatile, easy to replace, please contact us. The company manufactured more than Φ200-Φ800 various brake wheel coupling brake coupling parameter table coupling with an outer diameter of the outer diameter of the brake drum Φ200 Φ180 Φ300 Φ220 Φ400 Φ220 Φ500 Φ290 Φ600 Φ350 Φ800 Φ490 Note: brake within hole reducer models configured according to customer choice. BACKGROUND: Currently hoist mechanical brake system commonly used casting brake wheel. Brake wheel material is generally used ZG340-640, are casting blank with the processing, the tread surface hardening, to achieve hardness 45-55HRC, deep, 2mm hardness 40HRC. The utility model has the beneficial effect: The utility model can significantly improve the life of the brake drum, its service life is more than three times the original cast brake drum, in particular to avoid surface cracking, crack and even the brake drum crack degrading phenomenon so that greatly improved the safety of the crane. TECHNICAL FIELD: The utility model relates to a crane brake system. Particularly to a crane brake drum. Such casting can easily produce the following problems: l), the organization and the inner defect casting residual stress and heat treatment process may cause the brake wheel brake wheel surface cracks and even cracking. 2) The brake wheel surface hardness of heat treatment is not easy to guarantee, easy to wear, short life. Site on many occasions the brake drum cracking even after security failure crack falls from a height, must devise a more safe and practical for the brake wheel. Utility Model Content: The utility model is intended to provide surface cracks can be avoided, and long life of the crane brake wheel, brake drum major cracking and wearing solve technical problems. The basic principle is to use structures in place so as to prevent defective casting metal casting fundamentally, and to take measures to improve the wear resistance of the brake drum surface. The utility model scheme: one crane brake drum from the rim, spokes, wheel core of three parts, wheel core splice in the spokes and splice welded, welded at the outer periphery of the rim spokes in the wheel between the ring and spoke stiffener plate is welded. Hard Surfacing in the surface layer of the rim, the rim and spokes of steel parts for the forging of the wheel core. Brief Description: A crane brake drum patent specification drawings l-based utility model Schematic diagram: a round core, two round pieces, a rim 3, 4 a stiffener plate, a hard alloy 5 Resentment surfacing. DETAILED DESCRIPTION: Referring to the drawings A crane brake wheel, the rim 3, spoke 2, wheel core 1 consists of three parts, wheel core 1 splice in the spokes 2 and welded splice at the spokes 2 welding the outer periphery of the rim 3 between the rim and spokes welded stiffener plate 4. The rim surface alloy cladding layer 5. Electrode welding electrodes used Harbin Institute of I) -50 type wear-resistant alloy welding electrode. Resentment carbide thickness of the cladding layer is 2-3mm, the production, the use of 20 forged steel wheel core; spoke using Q235A californium into a cold bowl: steel rim using q235A and hot rolled into a cylindrical shape at the interface welding; and then the three parts after rough metal processing welding as a whole, the overall annealing after welding, to eliminate residual stress, and finally reached the finishing drawings. Book one kind of crane brake drum patent claim 1. A crane brake wheel, the rim, spokes, wheel core of three parts, which is characterized by: round core splice in the spokes and welded splice, welding the outer periphery of the spoke wheel, between the wheel rim and spokes welded stiffener plate. 2. A crane according to claim 1, wherein the brake drum, characterized in that: the rim surface alloy cladding layer. 3. A crane according to claim 1, wherein the brake drum, characterized in that: the rim and spokes of steel parts, the wheel core is forging