High-stability heavy-load clamp

Abstract

The invention provides a high stability heavy-duty clamp, which consists of a pushing rod 1, a connecting rod 2, clamp arms 3, a clamp head 4, a stander 5 and a pulling rod 6, wherein the clamp arms 3, the clamp head 4, the stander 5 and the pulling rod 6 form a parallelogram mechanism. When the opening amount of a clamp mouth changes, the clamp head 4 always keeps at a horizontal position to limit the declination angle of a forging piece in the vertical clamping so as to improve the clamping stability of the clamp; the pulling rod 6 of the clamp bears most of the loading torque, reduces the actual work tension and improves the bearing capability of the clamp by more than one time accordingly; the clamp improves the bearing capability by more than 29 percent by using the property of the response blind area of reaction force; and the clamp makes the centrifugal force produced by the front arm part (a front arm 3, the clamp 4 and the pushing rod 6) and the rear arm part( a rear arm 3 and the connecting rod 2) counteract by structure balance, and avoids weakening the pre-tightening holding force by the centrifugal force, so the clamp not only can ensure the clamping stability, but also can rotate quickly to improve the operating speed of the heavy-duty forging machine and improve the production efficiency.

Description

technical field [0001] The invention relates to a high-stability heavy-duty clamp, which is an executive component of a large-scale forging manipulator and a loading and unloading machine. , transportation and stacking, and clamping molds or tools for operation. Background technique [0002] Clamps are one of the key parts of large-scale heavy-duty operating equipment. It is required to ensure the stability of clamping during the lifting and rotation of large components under time-varying heavy-load conditions. Therefore, it is particularly important to invent a new type of high-stability heavy-duty clamp by comprehensively analyzing the load-bearing capacity, load-bearing space and stability of the large-scale clamp mechanism, and optimizing the size and structure of the clamp mechanism. [0003] figure 1 It is a schematic diagram of the pre-tightening clamping when the clamp just clamps the forging part placed on the workbench. Depend on figure 2 It can be seen that w...

AI Technical Summary

Problems solved by technology

[0012] Excessive deflection angle causes the forging to fail when the deflection angle continues to increase when the clamp is lifted and rotated

[0013] Image 6 It is a schematic diagram of clamps when they are clamped horizontally. Because the actual average working tension at the jaws is not equal when clamping horizontally and vertically, and because the deflection stiffness of the jaws is different when clamping horizontally and vertically, the forging The deflection angle of the forging is inconsistent, when the clamp rotates, the inertial force of the center of mass of the forging fluctuates, resulting in unstable clamping

[0014] In addition, if the rotation speed of the clamp is too high, the components of the clamping mechanism, especially the clamp head, will generate a large centrifugal force, which will reduce the pre-tightening clamping force and cause the clamping to fail.

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