The method of arranging the rear end plate of the three-pronged oblique arm on the vertical plane of the projection line of the middle arm

Abstract

The invention discloses a method for arranging the rear end plate of the trident oblique arm on the vertical plane of the projection line of the middle arm. On the plane of the end plate, the formula for calculating the angle between the center line of the upper arm and the lower arm and the vertical center line of the rear end plate; The formula for calculating the distance from the center of the rear end plate. The present invention enables the oblique arm to have the best stress state, in addition to satisfying that the webs of the upper, middle and lower arms coincide with the central plane of the web of the main beam, it can also effectively reduce the side effects of the oblique arm under pressure. Axial force, so that the direction of the total resultant force of the inclined arm is perpendicular to the joint surface of the hinge, so that the connecting bolts will not bear the shear force. It avoids the lateral component force of the oblique arm caused by improper setting of the position of the rear end plate, and also avoids the occurrence of adverse consequences such as shearing of the hinge connection bolts and causing instability of the oblique arm.

Description

technical field [0001] The invention relates to the technical field of hydropower station engineering, in particular to a method for arranging the rear end plate of a trident oblique arm on the vertical plane of the projection line of the middle arm. Background technique [0002] The curved gate is composed of door leaf, support arm, support hinge, water stop device and other parts. When the span of the front end of the support arm is smaller than the span of the support hinge, and the left and right support arms are arranged obliquely relative to the door leaves to form an isosceles trapezoidal main frame, it is called an oblique arm arc gate. The common single-sided oblique arm structure is composed of upper and lower arms, and the upper and lower arms are connected as a whole by vertical and oblique rods, which are called V-shaped oblique arms. [0003] Because it needs to withstand the water pressure of the entire door body, the web plates of the upper and lower arms (o...

AI Technical Summary

Problems solved by technology

There is a large deviation between the angle value obtained by this method and the angle naturally formed by the 3D model. If it is used in the production of oblique arms, it will cause the consequence that the webs of the upper and lower arms and the web of the main beam are not in the same plane, that is, the oblique arms Incorrect arm twist angle

May lead to instability and bending of the oblique arm

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