Disc type expander and use method thereof

Abstract

The invention relates to a disc type expander and a use method thereof. The disc type expander is characterized by comprising a plug board, wherein grooves are respectively arranged on the front side and the back side of the plug board; two sections of wedged openings are respectively arranged at the left end and the right end of the plug board; two metal wedge plates are respectively inserted into the two wedged openings; two long screws are respectively welded on two sides of on metal wedge plate and are positioned in the two grooves of the plug board; one ends of the two long screws, which are exposed out of the plug board, are commonly and penetratively arranged on a steel baffle; and the steel baffle is fixedly connected on the two long screws through two nuts. According to the disc type expander and the use method thereof disclosed by the invention, the outer side of the plug board can play a role of a wood wedge and the inner side of the plug board can play roles of expanding and preventing loosening of an expansion bolt; and once the expander disclosed by the invention is wedged in a mortise port between an upright post and a cross beam, even if the expander meets with greater external force shake, the loosening can be avoided. The disc type expander and the use method thereof can be widely used for buildings with wood structures, particular for strengthening ancient building structures.

Description

technical field [0001] The invention relates to a reinforcement of a wooden structure, in particular to a dish-shaped expander for reinforcing mortise and tenon joints of an ancient building wooden structure. Background technique [0002] In the existing houses made of wooden structures, the connection between the columns and beams of the main structure is mainly by inserting wooden tenons into the tenon holes, and some of them are glued together; especially in ancient buildings, basically all are The wooden mortise and tenon connection between the column and the beam is adopted. There are several different structural forms of mortise and tenon joints. Among them, straight mortise and tenon joints are widely used. The cross-section of the beam end of the straight mortise and tenon joints and the mortise of the column body are both rectangular. Constrained connections. Due to the needs of construction and installation, the height of the mortise is slightly greater than the ...

AI Technical Summary

Problems solved by technology

Conventional wooden wedges are generally wedge-shaped with a unidirectional slope, which has a good role in filling gaps and strengthening the connection between columns and beams; but because wooden wedges are inclined in one direction, once strong external forces such as earthquakes shake, it is very difficult to It is easy to loosen the wooden wedge, so that it is squeezed out of the socket

Loose mortise and tenon joints have brought serious hidden dangers to structural safety, especially many ancient buildings have been in disrepair for a long time. Loose mortise and tenon joints will cause structural tilt and poor earthquake resistance

Loose mortise and tenon joints are a common damage phenomenon in ancient wooden structures. Repeated use of wooden wedge tightening methods cannot fundamentally solve the problem

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