Five-roller large H steel bending machine

Abstract

The invention discloses a five-roller large H steel bending machine, and belongs to the technical field of mechanical manufacturing and machining. The technical problem to be solved is to provide the five-roller large H steel bending machine which is time-saving and labor-saving in bending machining, high in quality of machined finished products, long in service life and strong in bearing and anti-pressure capability. According to the technical scheme, two first rollers, two second rollers and a pressing roller are adopted for bending machining of large H steel, the five rollers are connected with at least three motors for power transmission, transmission power of transmission rollers to the H steel can be increased, transmission friction force can be increased, roller surface slipping caused by insufficient transmission power is avoided, and smoothness of bending work is ensured; and a thrust conduction device is arranged on a machining and bending part, force applied to one side plate by the pressing roller is transmitted to the other side plate through a groove shell capable of moving in an H-shaped steel groove, bending of the two side plates is conducted synchronously, stress is uniform, deformation of a middle connecting plate due to uneven stress of the two side plates is avoided, and the bending quality of the H steel is ensured.

Description

technical field [0001] The invention discloses a five-roller large-scale H steel coil bending machine, which belongs to the technical field of mechanical manufacturing and processing, and in particular relates to large-scale H steel coil bending processing equipment. Background technique [0002] H-shaped steel is an economical cross-section high-efficiency profile with more optimized cross-sectional area distribution and a more reasonable strength-to-weight ratio. It is named because its cross-section is the same as the English letter "H". Since all parts of the H-shaped steel are arranged at right angles, the H-shaped steel has the advantages of strong bending resistance in all directions, simple construction, cost saving and light structural weight, and has been widely used. Among the various construction buildings nowadays, there are a large number of arc-shaped top constructions, which require the use of large-scale H steel with a certain arc. The large-scale H steel wi...

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Problems solved by technology

Among the various construction buildings nowadays, there are a large number of arc-shaped top constructions, which require the use of large-scale H steel with a certain arc. The large-scale H steel with arcs is basically welded and formed, which requires skilled masters to follow a certain arc. Draw the cutting route, cut the steel plate, and then weld it into an arc-shaped H-shaped steel. It takes a lot of time to make an arc-shaped H-shaped steel, and at the same time, it will consume a lot of steel, resulting in a serious waste of resources and manpower. The reason of welding will also greatly reduce the service life, bearing capacity and compressive capacity of H-beam

Our company has also tried to use a large-scale bending machine to bend the integrally rolled H steel to make curved H steel. However, due to the long distance between the two side plates of the large H steel, during the bending process , the inward extrusion force of one side plate cannot be directly transmitted to the other side plate, and the other side plate cannot be bent normally, resulting in extrusion deformation of the middle connecting plate, and eventually the workpiece is scrapped

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