Unbalance loading absorber of jack for static load test

Abstract

The invention discloses an unbalance loading absorber of a jack for a static load test, and relates to the field of foundation pile detection equipment. The unbalance loading absorber is fixedly arranged on the top of a piston rod of the jack through a fastening screw, the unbalance loading absorber comprises an unbalance loading absorber base, an unbalance loading absorption sliding plate and a neodymium iron boron strong magnetic attraction block, the neodymium iron boron strong magnetic attraction block is fixed in a groove through a strong magnetic fastening screw, the top face of the unbalance loading absorber base and the top face of the neodymium iron boron strong magnetic attraction block form an integral smooth inwards-concave spherical crown face, the unbalance loading absorption sliding plate is located on the top face of the unbalance loading absorber base in a sliding mode, and the bottom face of the unbalance loading absorption sliding plate is an outwards-convex spherical crown face matching with the inwards-concave spherical crown face of the top face of the unbalance loading absorber base. According to the unbalance loading absorber, damage caused by unbalance loading of the jack can be effectively avoided, the unbalance loading absorption sliding plate can be accurately and adaptively adjusted according to the gravity center of a jacked heavy object, angle adjustment is more accurate, the test success rate and accuracy are improved, and working efficiency is improved.

Description

technical field [0001] The invention relates to the field of foundation pile detection equipment, in particular to an eccentric load absorber for a static load test jack. Background technique [0002] Static load test refers to applying vertical pressure, vertical uplift force or horizontal thrust step by step on the top of the pile, and observing the settlement, uplift displacement or horizontal displacement of the pile top over time to determine the corresponding vertical compressive bearing capacity of a single pile. Test methods for the vertical load bearing capacity of a single pile or the horizontal bearing capacity of a single pile. Static load test generally adopts jack loading. [0003] Traditional jacks have a fixed flat contact top cap, which cannot adapt to the inclination angle of the lifting object, or even if there is a sliding plate to cooperate, because of the fixing screw, the screw will be cut off and scratch the arc when the actual deviation occurs Ther...

AI Technical Summary

Problems solved by technology

[0003] Traditional jacks have a fixed flat contact top cap, which cannot adapt to the inclination angle of the lifting object, or even if there is a sliding plate to cooperate, because of the fixing screw, the screw will be cut off and scratch the arc when the actual deviation occurs Therefore, there may be two consequences, one is that the piston rod is seriously damaged, and the other is that the eccentric load absorbing sliding plate cuts off the middle fixing screw when it deviates, resulting in damage to the arc surface or the eccentric load absorbing sliding plate falls off when the jack is transported , increasing the potential safety hazard of injuring the staff below, and the off-centered load absorbing sliding plate is easily lost

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