CN211873556U

CN211873556U - Connecting sleeve without grouting material

Info

Publication number: CN211873556U
Application number: CN202020171288.XU
Authority: CN
Inventors: 时略; 祁飞; 詹奇龙
Original assignee: Hubei Qiandao New Material Co ltd
Current assignee: Hubei Qiandao New Material Co ltd
Priority date: 2020-02-15
Filing date: 2020-02-15
Publication date: 2020-11-06
Anticipated expiration: 2030-02-15

Abstract

The utility model discloses a connecting sleeve without grouting material, which comprises a sleeve main body, wherein two end parts of the inner wall of the sleeve main body are provided with first connecting heads; a second connector is fixedly connected to the end part, far away from the sleeve main body, of the first connector; the inner wall of the second connector is fixedly connected with the steel bar; the outer wall of the second connector is fixedly connected with the first connector. Need not connecting sleeve of grout material, be provided with first connector through the inner wall both ends at the sleeve body, the cover is equipped with the second connector on the reinforcing bar, threaded connection through first connector and second connector realizes that reinforcing bar and telescopic be connected with this and realize being connected of prefabricated component reinforcing bar, need not to grout to this internal to the sleeve during use, solved the telescopic incline of traditional grout and the technological problem of leaking the thick liquid, reduced manufacturing cost simultaneously.

Description

Connecting sleeve without grouting material

Technical Field

The utility model belongs to the steel bar connection sleeve in prefabricated post of assembled concrete structure, the prefabricated wall, concretely relates to need not the connecting sleeve of grout material.

Background

In the modern fabricated concrete structure, the stressed steel bars of the prefabricated parts are mainly connected by adopting a sleeve grouting connection method. After the connecting reinforcing steel bars are inserted into the grouting cavity of the grouting sleeve, high-strength grouting material special for sleeve connection is injected into the grouting cavity, the connecting reinforcing steel bars are anchored in the grouting cavity of the sleeve after the grouting material is hardened, and the reinforcing steel bars and the sleeve are connected together, so that the connection of the reinforcing steel bars of the prefabricated part is realized. The international industry standard 'reinforced sleeve grouting connection application technical regulation' JGJ355-2015 of China has made relevant regulations on connection, application and acceptance of sleeve grouting joints.

When a prefabricated member is produced, the conventional grouting connecting sleeve is buried in a concrete member, and a grouting hole for grouting a grouting material into a grouting cavity of the joint connecting sleeve and a grout discharging hole for exhausting and discharging the grout are reserved on the member (see Chinese patents CN201620462271.3 and CN 201420031861.1). The grouting connecting sleeve has the following defects in the production and use processes: the clearance of inserted bar and jack is big, can't guarantee sleeve terminal surface and template and closely laminate, and the axostylus axostyle also has the clearance with sleeve grout chamber hole, not only has sleeve axis skew problem, still leads to when concreting, and grout liquid can get into the sleeve through the clearance between sleeve terminal surface and the component template, the clearance of sleeve grout chamber hole and mounting axostylus axostyle, makes sleeve skew and hourglass thick liquid become a general problem. Meanwhile, the existing grouting connecting sleeve has a great deal of adverse effects on material consumption, labor cost, production efficiency and product quality of component production, and the assembled concrete structure is difficult to have the characteristics of low cost and high efficiency, so that the rapid popularization and development of industrial buildings in China are influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a need not connecting sleeve of grout material to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

a connecting sleeve without grouting material comprises a sleeve main body, wherein two end parts of the inner wall of the sleeve main body are provided with first connecting joints; a second connector is fixedly connected to the end part, far away from the sleeve main body, of the first connector; the inner wall of the second connector is fixedly connected with the steel bar; the outer wall of the second connector is fixedly connected with the first connector.

Preferably, the first connector and the sleeve main body are of an integral molding structure; a first connecting thread is provided on the interior of the first connector.

Preferably as this embodiment, the second connector includes the second connector body, the inner wall of second connector body is provided with the solid fixed ring who is connected with the reinforcing bar, the outer wall of second connector body is provided with the second connecting thread with first connecting thread matched with.

Preferably, the first connecting thread is a positive thread, the second connecting thread is a negative thread, and the positive thread and the negative thread are locked in a matching manner.

Preferably, in this embodiment, the central axes of the first connector and the second connector respectively coincide with the central axis of the sleeve main body.

Preferably, in this embodiment, the sleeve body, the first joint and the second joint are formed by steel or iron material.

Compared with the prior art, the utility model discloses following beneficial effect has:

(1) need not connecting sleeve of grout material, be provided with first connector through the inner wall both ends at the sleeve body, the cover is equipped with the second connector on the reinforcing bar, threaded connection through first connector and second connector realizes that reinforcing bar and telescopic be connected with this and realize being connected of prefabricated component reinforcing bar, need not to grout to this internal to the sleeve during use, solved the telescopic incline of traditional grout and the technological problem of leaking the thick liquid, reduced manufacturing cost simultaneously.

(2) Need not connecting sleeve of grout material, adopt iron or steel to make, material strength is high, extrudees in the use, is not fragile under the collision, first connector and/or second connector adopt threaded connection with the sleeve body, firm, zero clearance is difficult not hard up or drop in the sleeve use.

(3) Need not the connecting sleeve of grout material, the position precision of sleeve port and axis all obtains reliable assurance, processing, management, material cost in the precast concrete component production process are showing and are reducing simultaneously, and labour personnel work efficiency, component qualification rate, component quality improve by a wide margin, popularization and application prospect is wide.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic view of the internal structure of a connecting sleeve without grouting material according to the present invention;

fig. 2 is a schematic cross-sectional structure diagram of a second connecting head according to the present invention;

reference numerals:

1. a sleeve body; 2. reinforcing steel bars; 3. a first connector; 3.1, a first connecting thread; 4. a second connector; 4.1, a second connector body; 4.2, fixing a ring; 4.3 and a second connecting thread.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, rather than all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention based on the embodiments of the present invention.

In the description of the present invention, it should be noted that the terms "top", "bottom", "one side", "the other side", "front", "back", "middle part", "inside", "top", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

Referring to fig. 1-2, an embodiment of the present invention provides a connecting sleeve without grouting material, including a cylindrical sleeve main body 1, wherein the sleeve main body 1 is formed by a steel material process. The first connectors 3 are disposed at both ends of the inner wall of the sleeve body 1, and in this embodiment, the first connectors 3 are integrally formed with the sleeve body 1 (the first connectors 3 are a part of the sleeve body 1). The end part of the first connector 3, far away from the sleeve body 1, is fixedly connected with a second connector 4, the inner wall of the second connector 4 is fixedly connected with the steel bar 2, and the outer wall of the second connector 4 is fixedly connected with the first connector 3. In this embodiment, the sleeve body 1 serves as a connecting member of the main body, the first connector 3 and the sleeve body 1 are formed as an integral butt joint, and the second connector 4 serves to fix the reinforcing bar 2 and butt-joint with the sleeve body 1. Be provided with first connector 3 through the inner wall both ends at sleeve body 1, the cover is equipped with second connector 4 on reinforcing bar 2, the threaded connection through first connector 3 and second connector 4 realizes being connected with this and realizing being connected of prefabricated component reinforcing bar of reinforcing bar 2 and sleeve (sleeve main part 1), need not to grout in the sleeve body 1 during the use, the telescopic incline of having solved traditional grout and the technological problem who leaks the thick liquid, manufacturing cost has been reduced simultaneously.

Referring to fig. 1 to 2, in the present embodiment, the first connector 3 is a part of the sleeve body 1, and the length of the first connector 3 is 1/4-1/3 (preferably 1/4) of the length of the integral sleeve body 1 to ensure the strength and stability of the integral connection. Further, the wall thickness of the first connector 3 is 1.5 times or more than 2 times of the wall thickness of the middle part of the sleeve body 1, so that the stability of the butt joint end can be ensured. The inner wall of the first connector 3 is provided with a first connecting thread 3.1 which is fixedly connected with the second connector 4 through the first connecting thread 3.1.

Referring to fig. 1 to 2, the second connector 4 is made of steel or iron for fixing and connecting with the first connector 3. The second connector 4 comprises a second connector body 4.1, the inner wall of the second connector body 4.1 is provided with a fixing ring 4.2 connected with the steel bar 2, and the outer wall of the second connector body 4.1 is provided with a second connecting thread 4.3 matched with the first connecting thread 3.1. In this embodiment, in use, the reinforcing bar 2 is inserted into the fixing ring 4.2, and then the second connector 4 and the first connector 3 are locked together by the screw threads (positive and negative screw threads). Furthermore, the first connecting thread 3.1 is a positive thread, and the second connecting thread 4.3 is a negative thread, and is locked by matching the positive thread and the negative thread. The central axes of the first connector 3 and the second connector 4 are respectively coincided with the central axis of the sleeve main body 1, so that the position accuracy of the sleeve port and the position accuracy of the sleeve axis are both reliably guaranteed, and the overall stability is further enhanced. In this embodiment, a plurality of annular connecting grooves are formed in the fixing ring 4.2 in the circumferential direction, and the reinforcing steel bar 2 is fixed in the second connector 4 through the connecting grooves.

The utility model discloses a threaded connection is carried out with first connector 3 in the sleeve body 1 to second connector 4, has improved telescopic installation accuracy, need not to carry out grout in the sleeve and has reduced manufacturing cost, promotes the quality of prefabricated component product, has avoided the quality hidden danger that slip casting pipe and slip casting mouth department easily leaked thick liquid in traditional work progress simultaneously, has reduced the technical requirement to constructor to effectual efficiency of construction and the construction quality of having improved.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a need not grout material's connecting sleeve, includes sleeve main part (1), its characterized in that: two ends of the inner wall of the sleeve main body (1) are provided with first connecting joints (3); a second connector (4) is fixedly connected to the end part, far away from the sleeve main body (1), of the first connector (3); the inner wall of the second connector (4) is fixedly connected with the steel bar (2); the outer wall of the second connector (4) is fixedly connected with the first connector (3).

2. The grout free connection sleeve of claim 1, wherein: the first connecting head (3) and the sleeve main body (1) are of an integrated forming structure; a first connecting thread (3.1) is arranged on the interior of the first connecting head (3).

3. The groutless connection sleeve of claim 2, wherein: the second connector (4) comprises a second connector body (4.1), the inner wall of the second connector body (4.1) is provided with a fixing ring (4.2) connected with the steel bar (2), and the outer wall of the second connector body (4.1) is provided with a second connecting thread (4.3) matched with the first connecting thread (3.1).

4. The groutless connection sleeve of claim 3, wherein: the first connecting thread (3.1) is a positive thread, the second connecting thread (4.3) is a negative thread, and the positive thread and the negative thread are matched and locked.

5. The groutless connection sleeve of claim 3, wherein: the central axes of the first connector (3) and the second connector (4) are respectively coincided with the central axis of the sleeve main body (1).

6. The grout free connection sleeve of claim 1, wherein: the sleeve body (1), the first connector (3) and the second connector (4) are all formed by steel or iron materials.