CN212176169U - Precast concrete component with straight thread connected with grouting sleeve - Google Patents

Abstract

The utility model relates to the technical field of concrete structure of building engineering assembly, in particular to a precast concrete component with straight threads connected with a grouting sleeve, which comprises a precast wall body, wherein threaded connecting steel bars extend from the upper end surface and the lower end surface of the precast wall body, and the connecting steel bars are in threaded connection with the grouting sleeve; grout sleeve including advance thick liquid portion and establish rotate connect in advance the screw thread portion at thick liquid portion both ends, screw thread portion and connecting reinforcement threaded connection, advance to be provided with in the thick liquid portion and advance the thick liquid mouth. The utility model discloses its effect that has is: the cost is reduced while the stability of the tension of the steel bar is ensured.

Description

A precast concrete member connected with straight thread and grouting sleeve

technical field

The utility model relates to the technical field of assembling concrete structures in construction projects, in particular to a prefabricated concrete member connected with a straight thread and a grouting sleeve.

Background technique

At present, the connection of precast concrete components mainly adopts sleeve, corrugated pipe and reserved hole grouting connection. In these connection methods, the steel bars to be connected are pulled apart or overlapped, and then high-strength grouting material is poured into the holes; after hardening, the steel bars and the sleeves, corrugated pipes or the concrete outside the holes are firmly combined to form a unified whole.

The tensile force of the steel bar mainly depends on the bonding force transmission between the grouting material and the surrounding sleeve. In order to ensure the stability of the tensile force of the steel bar, the length and diameter of the sleeve, corrugated pipe or hole will be relatively large, resulting in a large amount of steel and grouting material. , the cost is high; if the length and diameter of the sleeve, corrugated pipe or hole are not set larger, the stability of the tensile force of the steel bar cannot be guaranteed.

Utility model content

Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a prefabricated concrete member connected with a straight thread and a grouting sleeve, which has the effect of reducing the cost while ensuring the stability of the tensile force of the steel bar.

The above-mentioned utility model purpose of the present utility model is achieved through the following technical solutions:

A prefabricated concrete member connected with a straight thread and a grouting sleeve, comprising a prefabricated wall body, the upper end surface and the lower end surface of the prefabricated wall body are extended with connecting steel bars with threads, and the connecting steel bars are threadedly connected with the grouting sleeve;

The grouting sleeve includes a grouting portion and a threaded portion rotatably connected to both ends of the grouting portion, the threaded portion is threadedly connected with the connecting steel bars, and a grouting port is provided on the grouting portion.

By adopting the above technical solution, when using the prefabricated concrete member, the two threaded parts of the grouting sleeve are respectively connected with the connecting steel bars on the two prefabricated walls to be connected, and then the grouting material is poured at the grouting inlet to the Grout until the grouting material fills the entire grouting sleeve, and the connection is completed after the grouting material is cooled. Rebar tension stability while reducing costs.

The utility model is further provided that: the outer wall of the threaded portion is provided with a rotating groove, two ends of the outer side wall of the slurry feeding portion are respectively protruded with rotating convex rings, and the rotating convex rings are clamped and embedded in the rotating grooves.

By adopting the above technical solution, the rotational connection between the screw portion and the slurry feeding portion is realized, and the difficult separation between the slurry feeding portion and the screw portion is ensured.

The utility model is further provided that: the part of the rotating convex ring that is clamped and embedded in the rotating groove is arc-shaped, and the groove bottom of the rotating groove is arc-shaped.

By adopting the above technical solution, the rotating convex ring is easy to slide in the rotating groove.

The utility model is further arranged as follows: the slurry inlet is opened at a position close to the thread on one side of the inner cavity.

By adopting the above technical solution, the grouting material can fill the entire grouting sleeve from one end of the grouting sleeve, so that the grouting is more sufficient and pores are not easily retained.

The utility model is further provided that: the threaded portion is provided with a connecting groove along the length direction.

By adopting the above technical solution, the grouting material can be poured into the position of the connecting groove, so that the connection between the connecting steel bar and the connecting sleeve is more stable.

The utility model is further configured as follows: a reinforcing ring groove is recessed in the threaded part of the connecting steel bar.

By adopting the above technical solution, the grouting slurry is poured into the position of the reinforcement ring groove, so that the connecting steel bar is not easy to be separated from the connecting sleeve after forming, so that the connection is more stable.

The utility model is further configured as follows: the connecting steel bars are arranged in two rows and are evenly spaced.

By adopting the above technical solution, the tension between the two prefabricated walls is dispersed, and at the same time, the uniform spacing distribution makes it difficult to concentrate the stress and makes the connection more stable.

To sum up, the present utility model includes at least one of the following beneficial technical effects:

1. When using the prefabricated concrete component, connect the two threaded parts of the grouting sleeve to the connecting steel bars on the two prefabricated walls to be connected respectively, and then pour the grouting material at the grouting inlet to grouting to grouting. The whole grouting sleeve is filled, and the connection is completed after the grouting material is cooled, and the force transmission between the two steel bars is carried out through the bonding between the grouting material and the surrounding sleeve and the thread between the connecting steel bar and the grouting sleeve, so as to ensure the stability of the tensile force of the steel bar. while reducing costs;

2. The connection between the connecting steel bar and the connecting sleeve is made more stable by setting the connecting groove and the reinforcing ring groove.

Description of drawings

1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

2 is a schematic diagram of the assembly relationship of the connecting steel bar and the connecting sleeve according to an embodiment of the present invention;

3 is a cross-sectional view of a connecting steel bar and a connecting sleeve according to an embodiment of the present invention.

In the figure, 1. Prefabricated wall body; 11. Connecting steel bar; 111. Reinforcing ring groove; 2. Grouting sleeve; 21. Grouting part; 22. Thread part; , rotating groove; 222, connecting groove.

Detailed ways

The present utility model will be described in further detail below in conjunction with the accompanying drawings.

Referring to Figure 1 and Figure 2, a prefabricated concrete member with straight threads connected to a grouting sleeve disclosed by the present utility model includes a prefabricated wall 1, and the upper end surface and the lower end surface of the prefabricated wall 1 are extended with threaded connecting steel bars 11. The connecting steel bar 11 is threadedly connected with a grouting sleeve 2; A pulp inlet 211 is provided on the upper.

The connecting bars 11 are arranged in two rows and are evenly spaced. The tension between the two prefabricated walls 1 is dispersed, and at the same time, the uniform spacing distribution makes it difficult to concentrate the stress and makes the connection more stable.

3 , specifically, a rotating groove 221 is formed on the outer wall of the threaded portion 22 , and rotating convex rings 212 protrude at both ends of the outer side wall of the slurry feeding portion 21 respectively. The rotational connection between the threaded portion 22 and the slurry feeding portion 21 is achieved while ensuring that the slurry feeding portion 21 and the threaded portion 22 are not easily separated.

In order to facilitate the rotation of the rotating protrusions 212, further, the part of the rotating protrusions 212 inserted into the rotating grooves 221 is arc-shaped, and the bottom of the rotating grooves 221 is arc-shaped. The rotating protrusion 212 is easy to slide in the rotating groove 221 .

Referring to FIG. 2 and FIG. 3 , specifically, the slurry inlet 211 is opened at a position close to the thread on one side of the inner cavity. The grouting material can fill the entire grouting sleeve 2 from one end of the grouting sleeve 2 , so that the grouting is more sufficient and pores are not easily retained.

In order to make the connection between the steel bar and the connecting sleeve more stable, further, the threaded portion 22 is provided with a connecting groove 222 along the length direction, and the threaded portion of the connecting steel bar 11 is recessed with a reinforcing ring groove 111 . The grouting material can be poured into the connecting groove 222, which makes the connection between the connecting steel bar 11 and the connecting sleeve more stable; , making the connection more stable.

The implementation principle of this embodiment is:

When using the prefabricated concrete component, the two threaded portions 22 of the grouting sleeve 2 are respectively threaded with the connecting reinforcement bars 11 on the two prefabricated walls 1 to be connected, and then the grouting material is poured at the grouting inlet 211 to the grouting. Until the grouting material fills the entire grouting sleeve 2, the connection is completed after the grouting material is cooled, and the force transmission between the two steel bars is carried out through the bonding between the grouting material and the surrounding sleeve and the threads between the connecting steel bar 11 and the grouting sleeve 2. , to ensure the stability of the steel tensile force and reduce the cost.

The examples of this specific embodiment are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore: all equivalent changes made according to the structure, shape and principle of the present invention are not It should be covered within the protection scope of the present invention.

Claims (5)

1. The utility model provides a precast concrete of straight thread and grout muffjoint which characterized in that: the prefabricated wall comprises a prefabricated wall body (1), wherein connecting steel bars (11) with threads extend from the upper end face and the lower end face of the prefabricated wall body (1), and the connecting steel bars (11) are in threaded connection with grouting sleeves (2);

the grouting sleeve (2) comprises a grout inlet part (21) and threaded parts (22) rotatably connected to two ends of the grout inlet part (21), the threaded parts (22) are in threaded connection with connecting steel bars (11), and a grout inlet (211) is formed in the grout inlet part (21);

a rotating groove (221) is formed in the outer wall of the threaded portion (22), rotating convex rings (212) are respectively protruded from two ends of the outer side wall of the pulp inlet portion (21), and the rotating convex rings (212) are clamped in the rotating groove (221);

the part of the rotating convex ring (212) which is clamped and embedded in the rotating groove (221) is arc-shaped, and the bottom of the rotating groove (221) is arc-shaped.

2. The precast concrete for a straight thread and grout sleeve connection according to claim 1, wherein: the slurry inlet (211) is arranged at one side of the inner cavity and close to the position of the screw thread.

3. The precast concrete for a straight thread and grout sleeve connection according to claim 1, wherein: the threaded portion (22) is provided with a connecting groove (222) along the length direction.

4. The precast concrete for a straight thread and grout sleeve connection according to claim 3, wherein: the threaded part of the connecting steel bar (11) is recessed with a reinforcing ring groove (111).

5. The precast concrete for a straight thread and grout sleeve connection according to claim 1, wherein: the connecting steel bars (11) are arranged in two rows and are distributed at intervals.

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