CN109532071B

CN109532071B - FRP stirrup forming device and reinforcement cage manufacturing method

Info

Publication number: CN109532071B
Application number: CN201811386167.0A
Authority: CN
Inventors: 王步; 孟林杰; 黄小霞; 毛校鹏
Original assignee: Changan University
Current assignee: Changan University
Priority date: 2018-11-20
Filing date: 2018-11-20
Publication date: 2020-11-24
Anticipated expiration: 2038-11-20
Also published as: CN109532071A

Abstract

The invention discloses an FRP stirrup forming device and a reinforcement cage manufacturing method, wherein an FRP stirrup is manufactured through the FRP stirrup forming device, and an FRP reinforcement cage is bound through the FRP stirrup.

Description

FRP stirrup forming device and reinforcement cage manufacturing method

Technical Field

The invention belongs to the field of on-site forming of stirrups, and particularly relates to an FRP (fiber reinforced plastic) stirrup forming device and a reinforcement cage manufacturing method.

Background

The stirrup is located the outside of concrete structure, and is more sensitive to external corrosion, so adopt corrosion-resistant FRP muscle to replace original steel stirrup can be better solve the corrosion problem for concrete structure can be arranged in comparatively serious environment of corrosion such as ocean.

The FRP rib is a novel composite material, replaces steel bars in a concrete structure, and can solve the problem of durability caused by corrosion of the steel bars. According to the system for on-site molding of the FRP stirrups, the FRP stirrups are formed on site through winding treatment of the FRP fiber bundles, so that the function of the stirrups is better exerted, and the strength of the FRP stirrups cannot be well exerted by binding or connecting through a steel connector unlike common stirrups.

At present, FRP ribs are applied more and more in engineering, and the use value of the FRP ribs is gradually improved. At present, no system for the on-site molding of the FRP stirrups exists in the market.

Disclosure of Invention

The invention aims to overcome the defects and provides an FRP stirrup forming device and a reinforcement cage manufacturing method, which can quickly and efficiently generate FRP stirrups and reinforcement cages.

In order to achieve the purpose, the FRP stirrup forming device comprises a core die, wherein a through hole used for placing a fiber bundle is formed in the middle of the core die, a gear box is arranged below the core die, a glue injection hole is formed in the axial surface of the core die, a glue outlet of a glue injection machine is connected with the glue injection hole, a forward rotation clamp and a turnover clamp are respectively sleeved at two ends of the core die, and the gear box is used for driving the forward rotation clamp and the turnover clamp to drive the core die to rotate forwards and reversely.

One end of the core mold is opened, and the other end is sealed by a sealing cover.

The forward rotation fixture and the overturning fixture are gears, a plurality of driving gears meshed with the forward rotation fixture and the overturning fixture are arranged in the gear box, and the driving gears are driven by a motor.

The motor is controlled by a switch.

A reinforcement cage manufacturing method based on an FRP stirrup forming device comprises the following steps:

selecting the number of fiber bundles according to the diameter of the needed FRP stirrups;

placing the selected fiber bundles in a core mold, and fixing the core mold through a forward rotation clamp and an overturning clamp;

thirdly, the gear box is used for driving the forward rotation clamp and the overturning clamp to drive the core mold to rotate forward and backward, and the glue injection machine continuously injects glue into the fiber bundles in the core mold until the FRP stirrup forming is completed;

step four, demolding the core mold, and taking out the FRP stirrups;

and step five, binding and connecting the FRP stirrups to form the required FRP reinforcement cage.

And in the fourth step, when demoulding is carried out, loosening the forward rotation clamp and the overturning clamp, and drawing the FRP stirrup out of the core mould.

And step five, performing binding connection on the FRP stirrups, and performing heat treatment on the joints.

Compared with the prior art, the fiber bundle is placed in the core mold, the two ends of the core mold are driven to rotate in opposite phases through the gear box, and the FRP stirrups are finally manufactured. The problem that the frp stirrups cannot be connected into a reinforcement cage like common reinforcements and longitudinal reinforcements is effectively solved, and the performance of the frp material is better exerted.

The method can adjust the diameter of the FRP stirrup in real time, select the number of fiber bundles, effectively solve the problem that the FRP stirrup can not be connected with a longitudinal bar to form a reinforcement cage like a common reinforcement bar, better play the performance of a FRP material, and further solve the problem of durability caused by corrosion of the FRP bar connected through a steel elbow, can be a uniform material for the stirrup, and better play the strength of the FRP composite material bar.

Drawings

FIG. 1 is a schematic diagram of the structure of the apparatus of the present invention;

FIG. 2 is a schematic view of the core package of the present invention holding a fiber bundle;

FIG. 3 is a schematic view of the apparatus for winding FRP ribs of the present invention;

FIG. 4 is a schematic view of the form of the invention wound into a stirrup;

the device comprises a switch 1, a glue injection machine 2, a fiber bundle 3, a core mold 4, a clamp 5, a gear box 6, a sealing device 7 and an FRP hoop reinforcement 8.

Detailed Description

The invention will be further explained with reference to the drawings.

Referring to fig. 1, fig. 2 and fig. 3, an FRP stirrup forming device, including the mandrel 4, a through hole for placing a fiber bundle 3 is provided at the middle part of the mandrel 4, a gear box 6 is provided below the mandrel 4, a glue injection hole is provided on the axial surface of the mandrel 4, a glue outlet of the glue injection machine 2 is connected with the glue injection hole, two ends of the mandrel 4 are respectively sleeved with a forward rotation fixture and an overturning fixture, the gear box 6 is used for driving the forward rotation fixture and the overturning fixture to drive the mandrel 4 to rotate forward and backward, one end of the mandrel 4 is open, the other end is sealed by a sealing cover 7, the forward rotation fixture and the overturning fixture are gears, a plurality of driving gears meshed with the forward rotation fixture and the overturning fixture are provided in the gear box 6.

Referring to fig. 1, 3 and 4, a method for manufacturing a reinforcement cage based on an FRP stirrup forming device includes the following steps:

placing the selected fiber bundles in a core mold 4, and fixing the core mold 4 through a forward rotation clamp and an overturning clamp;

thirdly, the gear box 6 is used for driving the forward rotation clamp and the overturning clamp to drive the core mold 4 to rotate forward and backward, and the glue injection machine 2 continuously injects glue into the fiber bundles in the core mold 4 until the FRP stirrup forming is completed;

step four, demoulding the core mould 4, loosening the forward rotation clamp and the overturning clamp, and drawing the FRP stirrup out of the core mould 4;

and step five, binding and connecting the FRP stirrups, and performing heat treatment on the joints to form the needed FRP reinforcement cage.

Claims

1. The utility model provides a FRP stirrup forming device, a serial communication port, including mandrel (4), the through-hole that is used for placing tow (3) is offered at mandrel (4) middle part, mandrel (4) below is provided with gear box (6), the glue injection hole has been seted up on the axial plane of mandrel (4), the glue solution exit linkage glue injection hole of injecting glue machine (2), the both ends of mandrel (4) are overlapped respectively and are equipped with corotation anchor clamps and upset anchor clamps, gear box (6) are used for driving corotation anchor clamps and upset anchor clamps drive mandrel (4) corotation and reversal, corotation anchor clamps and upset anchor clamps are the gear, be provided with a plurality of driving gears with corotation anchor clamps and upset anchor clamps meshing in gear box (6), the driving gear passes through motor drive.

2. The FRP stirrup molding apparatus as set forth in claim 1, wherein the core mold (4) is open at one end and sealed at the other end by a sealing cap (7).

3. The FRP stirrup molding device as claimed in claim 1, wherein the motor is controlled by a switch (1).

4. The method for manufacturing the reinforcement cage based on the FRP stirrup forming device as claimed in claim 1, which is characterized by comprising the following steps:

placing the selected fiber bundles in a core mold (4), and fixing the core mold (4) through a forward rotating clamp and an overturning clamp;

thirdly, the gear box (6) is used for driving the forward rotation clamp and the overturning clamp to drive the core mold (4) to rotate forward and backward, and the glue injection machine (2) continuously injects glue into the fiber bundle in the core mold (4) until the FRP stirrup forming is completed;

fourthly, demolding the core mold (4), taking out the FRP stirrup, and releasing the forward rotation fixture and the overturning fixture to draw the FRP stirrup out of the core mold (4) during demolding;

5. The method for manufacturing the reinforcement cage based on the FRP stirrup forming device as claimed in claim 4, wherein in the fifth step, after binding and connecting the FRP stirrups, heat treatment is performed at joints.