CN-121992914-A - Reinforcing steel bar mechanical connector for prefabricated part

CN121992914ACN 121992914 ACN121992914 ACN 121992914ACN-121992914-A

Abstract

The invention discloses a steel bar mechanical connector for prefabricated components, which relates to the field of concrete prefabricated components and comprises a ball head connecting screw rod, wherein a group of steel bar eccentric shaft connecting pieces are symmetrically arranged at two ends of the ball head connecting screw rod, a half ball head of a first rotating head can rotate in a first hemispherical groove of a supporting sleeve, a half ball head of a second rotating head can rotate in a second hemispherical groove of a compression-resistant gasket, and the two spherical pairs act together to allow the ball head connecting screw rod and the steel bar eccentric shaft sleeve to deflect relatively, so that the relative axial line and angle deviation of required connecting steel bars of a component joint are compensated adaptively, the wild construction behaviors such as forced beating and prying of steel bars are avoided, the construction efficiency is improved, the integrity of steel bar base materials and threads is protected, a certain design torque is applied to corresponding threads, and effective pre-tightening force of steel bar connection can be formed, and the connection quality of the steel bar of the component joint is ensured, so that the component joint forms strong joint and weak anti-seismic protection requirements of the component joint are met.

Inventors

CHU SHIHAI
ZHANG CHUYAN
ZHANG QINGTAN
Zheng Biaoyu
WU ZIYOU
HUANG XIAOFENG

Assignees

厦门市时海建工科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260304

Claims (5)

1. The reinforcing steel bar mechanical connector for the prefabricated part is characterized by comprising a ball connecting screw rod (1), wherein a group of reinforcing steel bar eccentric shaft connecting pieces (2) are symmetrically arranged at two ends of the ball connecting screw rod (1); The steel bar eccentric shaft connecting piece (2) comprises a steel bar eccentric shaft sleeve (21), a supporting sleeve (23) is installed at one end, close to the middle part of a ball head connecting screw rod (1), of the steel bar eccentric shaft sleeve (21), a first rotating head (22) is installed on the ball head connecting screw rod (1), the first rotating head (22) is located in an inner cavity of the steel bar eccentric shaft sleeve (21), a second rotating head (25) which is symmetrically arranged with the first rotating head (22) and has the same structure is also installed on the ball head connecting screw rod (1), a compression-resistant gasket (24) is sleeved at the middle part of the ball head connecting screw rod (1), and the compression-resistant gasket (24) is located between the supporting sleeve (23) and the second rotating head (25).
2. The reinforcing bar mechanical connector for prefabricated parts according to claim 1, wherein the reinforcing bar off-axis sleeve (21) is provided with a first thread groove (211) in an inner cavity of one end where the supporting sleeve (23) is located, the other end of the reinforcing bar off-axis sleeve (21) is fixedly provided with a first nut head (212), and the middle part of the first nut head (212) is provided with a second thread groove (213).
3. The reinforcing bar mechanical connector for prefabricated parts according to claim 2, wherein the first rotating head (22) and the second rotating head (25) comprise half-ball heads (223), one ends of the half-ball heads (223) are fixedly provided with second nut heads (222), and the middle parts of the second nut heads (222) and the half-ball heads (223) are provided with third thread grooves (221) for installing threads of a matched ball head connecting screw rod (1).
4. A reinforcing bar coupler for prefabricated parts according to claim 3, wherein the compression-resistant spacer (24) is provided with a second hemispherical groove (241) at one end near the second rotary head (25) for matching with the upper hemispherical head (223).
5. The reinforcing bar mechanical connector for prefabricated parts of claim 4, wherein the outer wall surface of the supporting sleeve (23) is provided with external threads (232) matched with the first thread grooves (211), one end, close to the compression-resistant gasket (24), of the supporting sleeve (23) is provided with a third nut head (233), and the middle part of the other end of the supporting sleeve (23) is provided with a first hemispherical groove (231) matched with the upper hemispherical head (223) of the first rotating head (22).

Description

Reinforcing steel bar mechanical connector for prefabricated part Technical Field The invention relates to a concrete prefabricated member technology, in particular to a reinforced mechanical connector for prefabricated members. Background Along with the rapid development of building industrialization, the application of prefabricated concrete structures (PC structures) is increasingly wide, in the PC structures, reliable connection of reinforcing steel bars among prefabricated components is a key for ensuring structural integrity and safety, and at present, main-stream reinforcing steel bar connection modes mainly comprise grouting sleeve connection, conventional straight threads, conical threads and other mechanical connection; The existing grouting sleeve connection has the problems of invisible quality, difficult detection, high risk of incompact grouting, complex construction process, high requirement on the working environment and long construction period, and the conventional mechanical connector (such as a straight thread sleeve, a conical thread sleeve and the like) cannot compensate the axis and angle deviation of the steel bars, in the production process of prefabricated components, the axis position deviation (+/-delta X, +/-delta Y) and the angle deflection (+/-delta theta) of the connecting steel bars extending out of the components are inevitably caused due to factors such as mould precision, steel bar binding deviation and disturbance in concrete pouring, and the conventional rigid mechanical connector requires the connecting steel bars to be strictly centered, when the deviation exists, the installation is extremely difficult, even the installation cannot be carried out, workers often adopt wild and brute construction modes such as forced beating, prying and bending the steel bars, the threads can be damaged, the steel bar base materials can be damaged, the construction efficiency is low, and potential safety hazards are formed. Disclosure of Invention The invention aims to provide a reinforcement mechanical connector for prefabricated components, which solves the problems that when the connected reinforcement in the prior art has deviation, workers often adopt rough construction modes such as forced beating, prying and bending of the reinforcement, and the like, so that threads can be damaged, and the base metal of the reinforcement can be damaged, thereby forming structural potential safety hazards. In order to achieve the aim, the invention provides the technical scheme that the steel bar mechanical connector for the prefabricated part comprises a ball connecting screw rod, wherein a group of steel bar eccentric shaft connecting pieces are symmetrically arranged at two ends of the ball connecting screw rod; The steel bar eccentric shaft connecting piece comprises a steel bar eccentric shaft sleeve, a supporting sleeve is arranged at one end, close to the middle part of a ball head connecting screw rod, of the steel bar eccentric shaft sleeve, a first rotating head is arranged on the ball head connecting screw rod, the first rotating head is located in an inner cavity of the steel bar eccentric shaft sleeve, a second rotating head which is symmetrically arranged with the first rotating head and has the same structure is further arranged on the ball head connecting screw rod, a compression-resistant gasket is sleeved at the middle part of the ball head connecting screw rod, and the compression-resistant gasket is located between the supporting sleeve and the second rotating head. Further, a first thread groove is formed in an inner cavity of one end of the steel bar eccentric shaft sleeve, where the supporting sleeve is located, a first nut head is fixedly arranged at the other end of the steel bar eccentric shaft sleeve, and a second thread groove is formed in the middle of the first nut head. Further, the first rotating head and the second rotating head comprise a half ball head, one end of the half ball head is fixedly provided with a second nut, and the middle parts of the second nut head and the half ball head are provided with a third thread groove matched with the threaded installation of the ball head connecting screw rod. Further, one end of the compression-resistant gasket, which is close to the second rotating head, is provided with a second hemispherical groove matched with the upper hemispherical head of the compression-resistant gasket. Further, an external thread matched with the first thread groove is formed in the outer wall surface of the supporting sleeve, a third nut head is arranged at one end, close to the compression-resistant gasket, of the supporting sleeve, and a first hemispherical groove matched with the upper hemispherical head of the first rotating head is formed in the middle of the other end of the supporting sleeve. Compared with the prior art, the steel bar mechanical connector for the prefabricated component has the advantages that the half ball head of t