Dual-cylinder dual-frame plate-and-frame hydraulic press with large table surface

Abstract

The invention discloses a dual-cylinder dual-frame plate-and-frame hydraulic press having a large table surface and capable of bearing 20,000 tons or 30,000 tons. The hydraulic press comprises a chassis and a workbench arranged on the chassis, wherein the chassis consists of a plurality of independent plates and frames which are arranged in parallel; and the plates and the frames are breadthwise pre-tightened and fixed through a plurality of groups of high-strength screw rods arranged up and down to form two groups of plate-and-frame chassis. The upper part of the inside of the chassis is fixed with a downward master hydraulic cylinder and four quick hydraulic cylinders which are positioned in the corners of the master hydraulic cylinder; the piston of each quick hydraulic cylinder is fixed with a downward guide post; the lower end of a plunger piston of the master hydraulic cylinder is fixed with a walking beam of which the four corners are fixed on the four guide posts; the four corners at the lower part of the chassis are also provided with four levelling hydraulic cylinders corresponding to the quick hydraulic cylinders; and the pistons of the levelling hydraulic cylinders are fixed to the lower ends of the guide posts. The dual-cylinder dual-frame plate-and-frame hydraulic press having the large table surface has the advantages that: the bias load resisting capacity is improved; the distortion of the chassis of the press is reduced; the parallelism between a slide block (namely the walking beam) and the workbench, and the operating verticality of the slide block in the working stroke of the press are ensured; and the weight and cost of equipment are reduced remarkably.

Description

(1) Technical field [0001] The invention belongs to heavy forging equipment, in particular to a 20,000-ton, 30,000-ton large-table double-cylinder double-frame plate-and-frame hydraulic press. (2) Background technology [0002] In the modern manufacturing industry, the proportion of light metals used in aviation, aerospace, nuclear power plants, nuclear submarines and other fields is increasing. However, light metals such as titanium alloys require high unit pressure during deformation, and the working pressure of the press must be greatly increased. In addition to aviation, aerospace, nuclear power plants, nuclear submarines and other industries, other important industrial sectors also require large forgings and formed parts. At present, the large plate heat exchangers, the important components used in nuclear power and nuclear submarines, all rely on imports. The reason is that China does not have heavy-duty, large-scale, high-precision CNC molding equipment. At present,...

AI Technical Summary

Problems solved by technology

[0003] At present, the following problems generally exist in the plate forming hydraulic presses of plate heat exchangers, which lead to poor forming quality of plate heat exchanger plates and cannot meet the quality requirements of large plate manufacturing

[0004] 1. The precision of the press is poor and cannot meet the requirements of large-scale high-standard plate heat exchangers

[0005] 2. After the frame is stressed, the deformation is too large

[0007] 4. The parallelism of the slider in the working stroke of the press relative to the worktable is poor

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