Cage-type movable crossbeam

Abstract

The invention discloses a cage-type movable crossbeam. A guiding space is formed inside a closed three-stem load bearing rack; the cage-type movable crossbeam is longitudinally positioned in the guiding space in a sliding manner; and the lower end of the cage-type movable crossbeam is fixedly connected with an upper anvil. The cage-type movable crossbeam comprises a movable cage, a working cylinder and a return device, wherein, the working cylinder is fixedly arranged in the movable cage; the working cylinder can drive the movable cage to longitudinally slide downwards along the guiding spaceof the closed three-stem load bearing rack; the lower end of the movable cage is fixedly connected with the return device; the return device can drive the movable cage to longitudinally slide upwardsalong the guiding space of the closed three-stem load bearing rack. The movable cage and the working cylinder of the invention are superposed, thus lowering the height of the closed three-stem load bearing rack, and increasing the stability of an oil press; the cage-type movable crossbeam has small cross sectional area, high longitudinal height, light weight, strong anti-eccentricity ability and high forge and press frequency, and is beneficial for manufacturing and transportation.

Description

technical field [0001] The invention relates to a movable beam in heavy machine manufacturing engineering, in particular to a cage type movable beam. Background technique [0002] Different forging processes have different requirements for pressing mechanical parameters, such as: [0003] Free forging and regular forging: large pressing force, up to 0.8-180MN; fast pressing speed, up to 60-80mm / s; low pressing frequency, 5-20 times / min; need to withstand eccentricity of up to 20,000 tons per meter torque; [0004] Free forging and fast forging: the pressing force is small, generally 0.8-80MN, the pressing speed is fast, up to 60-200mm / s; the pressing frequency is high, 60-200 times / min; the eccentric force distance is large, up to 10,000 tons one meter; [0005] Among the above mechanical parameters, the huge pressing force and pressing speed guarantee the energy required in the forging process, thereby ensuring the internal quality of the forging; pressing frequency and ...

AI Technical Summary

Problems solved by technology

[0006] The movable beam is one of the main components of various hydraulic presses. It is a load-bearing component that meets the pressing force requirements of the above-mentioned different processes. During the working process of the hydraulic press, the movable beam needs to bear the huge force of the working cylinder and the mold. It is necessary to transmit the huge eccentric moment to the bearing frame to minimize the effect of the moment on the seal of the working cylinder. The structure of the traditional free forging hydraulic press is centered on the anvil, extending to the left and right to match the column, and The column is surrounded to form a guide sleeve, which is guided by the guide plate on the column, so that it transmits the eccentric moment to the column, so that the load frame balances the deflection moment of the moving beam, and the higher the extension of the moving beam guide sleeve, the same eccentric moment The smaller the force acting on the moving beam, the smaller the impact on the strength and stiffness of the frame, that is, the same frame can withstand a larger eccentric moment, but at the same time the size of the moving beam increases Large, that is, the weight also increases, and the manufacturing difficulty, risk, cost and cycle increase rapidly. In addition, what is more serious is that the huge mass of the moving beam causes a huge inertial force, and it is difficult to increase the forging frequency.

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