CN109057166B

CN109057166B - Buckle formula grout sleeve structure of easily fixing a position

Info

Publication number: CN109057166B
Application number: CN201810997920.3A
Authority: CN
Inventors: 李检保; 马乃寅; 鲁正
Original assignee: Tongji University
Current assignee: Tongji University
Priority date: 2018-08-29
Filing date: 2018-08-29
Publication date: 2020-11-27
Anticipated expiration: 2038-08-29
Also published as: CN109057166A

Abstract

The invention relates to a buckle type grouting sleeve structure easy to position, which comprises a sleeve main body, wherein the side walls of two ends of the sleeve main body are respectively provided with a grouting hole and a grout outlet hole, male buckle pieces used for being matched and installed with two steel bars to be connected are symmetrically arranged at the upper part and the lower part of the inner wall of the sleeve main body, and the steel bars to be connected are connected with the male buckle pieces through buckle pieces. According to the grouting sleeve, the fastener is applied to the design of the grouting sleeve, so that on one hand, the rapid positioning and installation of the steel bar and the grouting sleeve are realized, and the construction speed is improved; on the other hand, the fastener provides certain tensile and compression resistance, the tensile and compression strength required by next construction can be achieved more quickly after the component is installed, the construction period is further shortened, and the seismic resistance of the joint of the component is improved.

Description

Buckle formula grout sleeve structure of easily fixing a position

Technical Field

The invention belongs to the field of assembly type building construction, and particularly relates to a buckling type grouting sleeve structure easy to position.

Background

The assembly type building construction technology is that assembly type concrete components are prefabricated and processed in a factory and then assembled on a construction site, and the core and difficulty of the assembly type building construction technology is how to effectively connect reinforcing steel bars. At present, the connection of steel bars among prefabricated components is realized by adopting a grouting sleeve, for example, Chinese patent CN107905455A discloses a grouting sleeve for connecting the steel bars of a prefabricated concrete component, which comprises a seamless steel pipe, wherein both end walls of the seamless steel pipe are provided with grouting nozzles, both ends of the seamless steel pipe are used for inserting connecting steel bars, the inner wall of the seamless steel pipe is provided with internal threads, both end openings of the seamless steel pipe are internally embedded with wedges, the thick end of each wedge is close to the end opening, and both end openings of the seamless steel pipe are provided with sealing plugs matched with the connecting steel bars; on the other hand, the early-stage tensile and compression strength of the assembled member is low, and the next construction can be carried out after the early-stage tensile and compression strength of the assembled member reaches the strength required by the specification, so that the construction period is prolonged, and the rapid development of the fabricated building is not facilitated.

Disclosure of Invention

The invention aims to solve the problems, provides the buckling type easily-positioned grouting sleeve which is widely suitable for various fabricated buildings, overcomes the defects of difficult positioning, low early tension-compression strength and the like of the grouting sleeve in the prior art, is simple to process and manufacture, is convenient to construct in the using process, has the characteristics of convenient positioning, early reaching the tension-compression strength required by the next construction, good anti-seismic performance and the like.

The purpose of the invention is realized by the following technical scheme:

the utility model provides a buckle formula grout sleeve structure of easily fixing a position, includes the sleeve main part, be equipped with the injected hole respectively and go out the thick liquid hole on the both ends lateral wall of sleeve main part, sleeve main part inner wall upper and lower portion symmetry is equipped with and is used for treating the public fastener of connecting reinforcement cooperation installation with two, treat to be connected through buckle spare between connecting reinforcement and the public fastener and be connected.

Further, the buckle piece comprises one end and a plurality of box of treating connection reinforcing bar fixed connection, the free end of box is equipped with the perforation, public fastener is for fixing a plurality of lugs of locating on the sleeve main part inner wall, box and lug matching set up.

Furthermore, the buckle piece is conical, and is a thin end along the insertion direction of the steel bar to be connected, the distance between the free end of the female buckle and the inner wall of the sleeve main body is smaller than the length of the convex block, the buckle piece has elasticity, and when the steel bar to be connected is inserted into the sleeve main body, the convex block is inserted into the through hole to position the steel bar to be connected.

Further, the clasp is made of low alloy steel or shape memory alloy.

Furthermore, 3-6 lugs are arranged and distributed on the same horizontal plane of the inner wall of the sleeve main body at equal intervals.

Further, public fastener is equipped with the multiunit with buckle spare, and along treating the connecting reinforcement insertion direction, and public fastener and buckle spare grow gradually from inside to outside size, do not influence each other when guaranteeing the installation.

Further, public fastener is equipped with two sets ofly, includes one-level pin thread and second grade pin thread, comprises four lugs, buckle spare correspondence is equipped with two sets ofly, includes one-level buckle spare and second grade buckle spare, all is equipped with four box buckles.

Further, the fastener is fixed on the outer wall of the steel bar to be connected through welding or threads.

Furthermore, the inner wall of the sleeve main body is provided with a plurality of annular convex ribs.

Furthermore, an elastic rubber sealing ring is arranged at a port of the sleeve main body close to the grout outlet.

Compared with the prior art, the invention has the advantages that:

1. aiming at the problems of difficult positioning and low construction speed between the steel bar and the grouting sleeve in the existing grouting sleeve connection technology, male fasteners are symmetrically arranged at the upper part and the lower part of the inner wall of the sleeve main body, so that the steel bar to be connected is connected with the male fasteners through the fasteners, the positioning of the steel bar to be connected can be quickly completed, the structure is simple, the processing and the manufacturing are convenient, the positioning is convenient in the construction process, the steel bar extending into the sleeve is ensured to be approximately coincident with the axis of the sleeve, the length of the steel bar extending into the sleeve can be accurately controlled, the construction speed is accelerated, and the construction period is shortened.

2. Aiming at the problems that the early tensile and compression strength of the assembled components is low and the construction period is prolonged, the fastener provides a certain tensile and compression resistance, so that the tensile and compression strength required by the next construction can be achieved more quickly after the components are installed, the construction period is shortened, and the seismic resistance of the joints of the components is improved.

Drawings

Fig. 1 is a schematic view of a main body of a snap-in easy-to-position grouting sleeve according to the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a schematic view of a fastener of the easy-to-position grouting sleeve of the invention;

FIG. 4 is a view B-B of FIG. 3;

fig. 5 is a schematic view illustrating the reinforcing bar connection according to the present invention.

Reference numbers in the figures: 1 is the sleeve main part, and 2 are annular fin, and 3 are out the thick liquid hole, and 4 are the injected hole, and 5 are elastic rubber seal, and 6 are one-level pin thread, and 7 are second grade pin thread, and 8 are one-level buckle spare, and 9 are second grade buckle spare, and 10 are for treating the connecting reinforcement, and 11 are the box, and 12 are the perforation.

Detailed Description

The invention is described in detail below with reference to the figures and specific embodiments.

Examples

The utility model provides a grout sleeve structure is easily fixed a position to buckle formula, refers to fig. 1-5, includes sleeve main part 1, annular fin 2, grout outlet 3, injected hole 4, elasticity rubber seal 5, one-level pin thread 6, second grade pin thread 7, one-level buckle spare 8, second grade buckle spare 9. Two ends of the sleeve main body 1 are respectively provided with a grouting hole 4 and a grout outlet hole 3, the inner wall of the sleeve main body 1 is provided with a plurality of annular convex ribs 2, the inner wall of the sleeve main body 1 is respectively provided with two groups of first-stage male buckles 6 and two groups of second-stage male buckles 7, and each group of male buckles is four; the fastener made of low alloy steel or shape memory alloy is divided into a first-level fastener 8 and a second-level fastener 9, the two-level fastener is provided with four female fasteners 11, the free end of each female fastener 11 is provided with a through hole 12, the fasteners can be fixed on the outer wall of a steel bar 10 to be connected through welding or threads, and the first-level male fastener 6 and the second-level male fastener 7 are four small cylindrical bumps distributed on the same horizontal plane of the inner wall of the sleeve main body at equal intervals.

In the invention, an elastic rubber sealing ring 5 is arranged at the port of the sleeve main body 1 close to the grout outlet 3.

In the invention, the size of the through hole 12 is the same as that of a corresponding male buckle with the same progression, the distance between the female buckle 11 and the sleeve main body 1 is smaller than the length of the male buckle, and the male buckle can be buckled with the female buckle 11 through the through hole 12 by utilizing the elasticity of the female buckle 11.

In the invention, the size of the first-stage male buckle 6 is smaller than that of the second-stage male buckle 7, so that the female buckle 11 on the first-stage buckle part 8 and the second-stage male buckle 7 cannot be buckled when the device is installed.

During concrete assembly, will treat connecting reinforcement 10 and insert from the both ends of sleeve main part 1, buckle spare is the toper, it is thin end to follow connecting reinforcement 10 insertion direction of treating, can guarantee like this to treat smooth the inserting of connecting reinforcement 10, the distance between box free end and the sleeve main part inner wall is less than the length of lug, because buckle spare has elasticity, treat the in-process that connecting reinforcement 10 inserted sleeve main part 1, the lug inserts and makes the connecting reinforcement location of treating in the perforation 12, the problem that location is difficult between the reinforcing bar that exists of current grout muffjoint technology and the grout sleeve, construction speed is slow is solved, guarantee to stretch into telescopic reinforcing bar approximate and sleeve axle center coincidence, and buckle spare can provide certain tension and compression performance, make the component installation after reach the required tension and compression intensity of construction on next step sooner, construction cycle is shortened, and the anti-seismic performance of component connection department has been improved.

Claims

1. The buckling type grouting sleeve structure easy to position comprises a sleeve main body (1), wherein the side walls of two ends of the sleeve main body (1) are respectively provided with a grouting hole (4) and a grout outlet (3), and the buckling type grouting sleeve structure is characterized in that male buckling pieces used for being matched and installed with two to-be-connected steel bars (10) are symmetrically arranged at the upper part and the lower part of the inner wall of the sleeve main body (1), and the to-be-connected steel bars (10) are connected with the male buckling pieces through buckling pieces;

the buckle piece is composed of a plurality of female buckles (11) with one ends fixedly connected with the steel bars (10) to be connected, the free ends of the female buckles (11) are provided with through holes (12), the male buckle pieces are a plurality of convex blocks fixedly arranged on the inner wall of the sleeve main body (1), and the female buckles (11) are matched with the convex blocks;

the buckle piece is conical, and is a thin end along the insertion direction of the steel bar (10) to be connected, the distance between the free end of the female buckle (11) and the inner wall of the sleeve main body (1) is smaller than the length of the convex block, the buckle piece has elasticity, and when the steel bar (10) to be connected is inserted into the sleeve main body (1), the convex block is inserted into the through hole (12) to position the steel bar (10) to be connected.

2. The snap-in easy-to-locate grout sleeve structure of claim 1, wherein the snap in is made of low alloy steel or shape memory alloy.

3. A snap-in easy-to-locate grouting sleeve structure according to claim 1, wherein the number of the projections is 3-6, and the projections are distributed on the same horizontal plane of the inner wall of the sleeve body (1) at equal intervals.

4. The buckling type grouting sleeve structure easy to position as claimed in claim 1, wherein the male buckling member and the buckling member are provided with a plurality of sets, and along the insertion direction of the steel bar (10) to be connected, the sizes of the male buckling member and the buckling member are gradually increased from inside to outside, so as to ensure that the male buckling member and the buckling member do not affect each other during installation.

5. A fastening type grouting sleeve structure easy to position as claimed in claim 4, wherein the male fastening members are provided in two sets, including a first male fastening member (6) and a second male fastening member (7), each composed of four protrusions, and the fastening members are correspondingly provided in two sets, including a first fastening member (8) and a second fastening member (9), each provided with four female fastening members (11).

6. The snap-in type easy-to-position grouting sleeve structure as claimed in claim 1, wherein the snap-in piece is fixed on the outer wall of the steel bar (10) to be connected by welding or threads.

7. The snap-in grouting sleeve structure easy to position as claimed in claim 1, wherein the inner wall of the sleeve body (1) is provided with a plurality of annular ribs (2).

8. A fastening type grouting sleeve structure easy to position according to claim 1, wherein an elastic rubber sealing ring (5) is arranged at the port of the sleeve body (1) close to the grout outlet (3).