Rotary impacting-type disconnected hook with double shafts and hooks

Abstract

The invention discloses a rotary impacting-type disconnected hook with double shafts and hooks, comprising a lifting lug (1) provided with a hanging and discharging hole (11). The lifting lug (1) is provided with two hanging scrolls (2) respectively fixed with one hanger (9); the middle of a rotary drop bar (6) is sheathed on a spindle (7); a stay cord (10) is fixed on one end of the rotary drop bar (6); a hammer (61) with an impacting lock hook (4) is arranged on the other end of the rotary drop bar (6); a heavy punch lifting lug (8) is arranged on the middle of the lower ends of two hangers(9); and the two hanging scrolls (2) are positioned on the symmetrical positions of two edges of a vertical axial lead (81) of the heavy punch. The rotary impacting-type disconnected hook overcomes the defects that the existing unhooking mode needs additional tools, has poor safety, is arduous and the like. The rotary impacting-type disconnected hook is safe, accurate, stable and labor-saving.

Description

technical field [0001] The invention relates to the field of high-strain dynamic detection in the detection of building foundation piles. More specifically, it is a double-axis double-hook rotary impact type decoupling. It lifts the weight to a certain height and hits the lock hook to make the weight fall freely. (Free fall hammer) impacts the top of the pile, causing the pile to sink instantly, which is used to detect the vertical ultimate bearing capacity of a single pile and other indicators. Background technique [0002] At present, domestic and foreign industrial and civil buildings use piles as foundation forms more and more widely, and the diameter and length of piles are also increasing. Research and testing are also increasingly important to ensure overall engineering quality. [0003] The dynamic pile measurement is to measure the dynamic stress and acceleration of the pile through the force and acceleration sensors installed on the side of the pile body under the...

AI Technical Summary

Problems solved by technology

[0008] There are following problems in this single hanging shaft double hook type decoupling: 1, single hanging shaft double hook, the strike bar can not be too long (<3m) because of manpower lifting, and it is too heavy and must be unsafe near the suspended weight; 2, due to single Hanging shaft, the hook end of the hanging shaft and the two halves of the hook weight are basically on the same vertical axis. In actual use, the weight is often still hanging on one of the double hooks after the lock hook is opened, and the weight cannot be dropped. There is a great security risk

[0010] This kind of single hanging shaft and single hook has the following problems: 1. It takes many people to pull the steel wire rope with all their strength, and it is difficult to unhook; Falling down, causing an accidental safety accident

Images