Precast pile mortise lock type connector

The precast pile interlocking joint structure with internal and external locking fasteners solves the problems of cumbersome construction, high cost, and failure of single elastic elements in the existing prestressed concrete pile connection. It achieves a connection effect with high reliability and strength that increases with load, adapts to off-center load conditions, and reduces the installation accuracy requirements.

CN122257403APending Publication Date: 2026-06-23JIANHUA CONSTRUCTION MATERIALS (CHINA) CO LTD
1 Cites 0 Cited by

Patent Information

Application Number
CN202610705526.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-21
Publication Date
2026-06-23

AI Technical Summary

Technical Problem

Existing connection methods for prestressed concrete piles suffer from problems such as cumbersome construction, high cost, poor quality control, and the risk of failure of a single elastic element. In particular, welding and mechanical connections are prone to instability and unreliability.

Method used

The precast pile plug-lock joint structure adopts internal and external double locking fasteners. Through the coordinated elastic deformation and engagement of the plug rod and sleeve, a double locking mechanism is formed to ensure the reliability and strength of the connection and avoid the failure of a single elastic element.

Benefits of technology

It achieves a highly reliable connection with increasing strength under load, adapts to off-center load conditions, reduces installation accuracy requirements, and has a compact structure with high functional integration, avoiding the risk of failure of a single elastic element.

✦ Generated by Eureka AI based on patent content.
Patent Text Reader

Abstract

The invention relates to a precast pile mortise lock type connector which comprises an upper sleeve and a lower sleeve, an inserting rod is arranged at the bottom end of the upper sleeve, a first connecting structure is arranged at the bottom end of the inserting rod, an outer locking fastener capable of elastically deforming in the radial direction is arranged on the peripheral wall of the inserting rod, and the outer locking fastener is provided with a second connecting structure and a first combination face; the top end of the lower sleeve is provided with an opening allowing the inserting rod to be inserted into, the bottom of the lower sleeve is provided with an inner locking fastener capable of elastically deforming in the radial direction, and the inner wall of the inner locking fastener is provided with a third connecting structure matched with the first connecting structure and a second combining face matched with the first combining face. A fourth connecting structure matched with the second connecting structure is arranged on the inner wall of the lower sleeve; after the inserting rod is inserted in place, the first combination face is attached to the second combination face, so that double self-locking is formed between the second connecting structure and the fourth connecting structure and between the third connecting structure and the first connecting structure when the inserting rod is pulled.
Need to check novelty before this filing date? Find Prior Art