CN217268364U

CN217268364U - Double-helix thread grouting sleeve and assembly for connecting steel bars

Info

Publication number: CN217268364U
Application number: CN202123349106.7U
Authority: CN
Inventors: 彭萌; 张志胜
Original assignee: Shengyuan Engineering Design Group Co ltd
Current assignee: Shengyuan Engineering Design Group Co ltd
Priority date: 2021-12-28
Filing date: 2021-12-28
Publication date: 2022-08-23
Anticipated expiration: 2031-12-28

Abstract

The utility model relates to the technical field of building construction, in particular to a double helix thread grouting sleeve and a component for steel bar connection, which enhances the connection strength between steel bars and the inside of a sleeve main body and improves the stability of the device for steel bar connection; including the sleeve main part, the built-in fitting, the first connecting block of multiunit, the first fastening bolt of multiunit, the connecting piece, multiunit second fixed block and multiunit second fastening bolt, the outside of sleeve main part is provided with the external screw thread, inside is provided with the internal thread, and the internal and external screw thread is opposite in the sleeve main part, the left side front end of sleeve main part is provided with the slip casting pipe, the right side rear end is provided with the mud pipe, and all be provided with the shutoff on the slip casting pipe of first fastening bolt and the mud pipe, the built-in fitting is located the right-hand member of sleeve main part, the first connecting block of multiunit is fixed respectively at sleeve main part right side and the left upper and lower both ends of built-in fitting.

Description

Double-helix thread grouting sleeve and assembly for steel bar connection

Technical Field

The utility model relates to a technical field of construction especially relates to a double helix screw thread grout sleeve and subassembly for steel bar connection.

Background

At present, the grouting sleeve connection is widely applied to prefabricated assembly type structural steel bar connection and is a mature connection technology of prefabricated concrete steel bar components. The grouting sleeve connection is suitable for the precast concrete construction mode, the hoisting of the component and the connection operation of the steel bar can be separately carried out, the connection mode has higher tensile strength and compressive strength, safe, reliable and stable performance and convenient construction and operation, simple requirements on construction equipment and quality of operators, while the bonding strength between the existing other grouting sleeves and the internal grouting material and the external concrete is not reliable enough when in use, in the patent document with publication number CN211114442U, a double-spiral grouting sleeve and an assembly for connecting prefabricated member steel bars are provided, the grouting sleeve adopts an internal and external double-helix structure, when used for connecting the steel bars of the precast concrete members, can strengthen the inside grout material of sleeve and outside concrete and telescopic cohesive strength, nevertheless its inside screw thread is connected with the reinforcing bar spiral shell, and the thick liquids of pouring into in to the sleeve are limited, lead to the relatively poor stability of steel bar connection.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a reinforcing bar and sleeve main part internal connection intensity have improved its double helix screw thread grout sleeve and subassembly that is used for the steel bar connection to steel bar connection stability.

The utility model discloses a double helix screw thread grout sleeve and subassembly for steel bar connection, which comprises a sleeve main body, an embedded part, a plurality of groups of first connecting blocks, a plurality of groups of first fastening bolts, a connecting piece, a plurality of groups of second fixing blocks and a plurality of groups of second fastening bolts, wherein the outer part of the sleeve main body is provided with external threads, the inner part is provided with internal threads, the internal threads and the external threads of the sleeve main body are opposite, the front end of the left side of the sleeve main body is provided with a grouting pipe, the rear end of the right side is provided with a grout discharge pipe, the grouting pipe and the grout discharge pipe of the first fastening bolts are both provided with sealing plugs, the embedded part is arranged at the right end of the sleeve main body, the plurality of groups of first connecting blocks are respectively fixed at the right side of the sleeve main body and the upper and lower ends of the left side of the embedded part, the two groups of first connecting blocks at the same side are connected by the first fastening bolts in a screw thread manner, the inner part of the embedded part is provided with screw threads, the connecting piece is arranged at the left side of the sleeve main body, the inner part of the connecting piece also uses internal threads, a plurality of groups of second fixing blocks are respectively fixed at the upper end and the lower end of the left side of the sleeve main body and the right side of the connecting piece, and two groups of second fixing blocks at the same side are connected in a screw-mounting mode through second fastening bolts; carry out the spiral shell dress with the reinforcing bar that built-in fitting and outside were reserved and connect, choose for use the diameter to be slightly less than the threaded reinforcement of sleeve main part internal diameter simultaneously, make this reinforcing bar and connecting piece spiral shell dress connect, and make partial reinforcing bar enter into the sleeve main part in, this moment to the inside thick liquids that pours into of sleeve main part, thick liquids can be filled between reinforcing bar and sleeve main part internal thread, pour into the concrete simultaneously in the outside of sleeve main part, increase the joint strength with the concrete degree through sleeve main part external thread, thereby accomplish being connected of reinforcing bar, reinforcing bar and sleeve main part internal connection intensity have been strengthened, the stability of device to the steel bar connection has been improved.

Preferably, the embedded part connecting structure further comprises an annular connecting block and a plurality of groups of inserted rods, wherein the annular connecting block is fixed at the right end of the embedded part, and the plurality of groups of inserted rods are respectively and uniformly fixed at the right end of the embedded part and the front end and the rear end of the embedded part; through setting up annular connecting block and inserted bar, increase the pre-buried intensity of being connected with the concrete degree when the concrete of built-in fitting, further improve the structural stability of device.

Preferably, the embedded part fixing device further comprises a plurality of groups of rotating rods, the plurality of groups of rotating rods are respectively fixed at the upper end and the lower end of the embedded part and the connecting part, and the rotating rods are located on the outer sides of the first connecting block and the second fixing block; through setting up the dwang, be convenient for twist and move built-in fitting or connecting piece for the device can be quick be connected with reinforcing bar spiral shell dress, improves the use convenience of device.

Preferably, the embedded part sleeve further comprises two groups of sealing rings, and the two groups of sealing rings are fixedly clamped at the connecting positions of the embedded part and the sleeve main body and the connecting part and the sleeve main body respectively; through setting up the sealing washer, avoid outside concrete to enter into the sleeve main part in, improve the leakproofness of device.

Preferably, the sleeve main body is a seamless steel pipe; through setting up seamless steel pipe, further improve the whole mechanism intensity of device.

Preferably, the rotating rod is provided with anti-skid threads; through setting up anti-skidding screw thread, the phenomenon of skidding appears when avoiding operating personnel to rotate the dwang, avoids appearing the damage of colliding with, improves the use reliability of device.

Compared with the prior art, the beneficial effects of the utility model are that: carry out the spiral shell dress with the reinforcing bar that built-in fitting and outside were reserved and connect, choose for use the diameter to be slightly less than the threaded reinforcement of sleeve main part internal diameter simultaneously, make this reinforcing bar and connecting piece spiral shell dress connect, and make partial reinforcing bar enter into the sleeve main part in, this moment to the inside thick liquids that pours into of sleeve main part, thick liquids can be filled between reinforcing bar and sleeve main part internal thread, pour into the concrete simultaneously in the outside of sleeve main part, increase the joint strength with the concrete degree through sleeve main part external thread, thereby accomplish being connected of reinforcing bar, reinforcing bar and sleeve main part internal connection intensity have been strengthened, the stability of device to the steel bar connection has been improved.

Drawings

FIG. 1 is a front view and a partial sectional view of the present invention;

FIG. 2 is a schematic view of the local axial structure of the present invention;

FIG. 3 is an enlarged schematic view of the structure of the present invention at A in FIG. 1;

in the drawings, the reference numbers: 1. a sleeve body; 2. embedding parts; 3. a first connection block; 4. a first fastening bolt; 5. a connecting member; 6. a second fixed block; 7. a second fastening bolt; 8. an annular connecting block; 9. inserting a rod; 10. rotating the rod; 11. and (5) sealing rings.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

As shown in fig. 1 to 3, the sleeve body 1 is externally provided with external threads, internally provided with internal threads, and the internal and external threads of the sleeve body 1 are opposite, the sleeve body 1 is provided with a grouting pipe at the front end of the left side, and is provided with a grout discharge pipe at the rear end of the right side, and the grouting pipe and the grout discharge pipe of the first fastening bolt 4 are both provided with a sealing plug, the embedded part 2 is located at the right end of the sleeve body 1, a plurality of groups of first connecting blocks 3 are respectively fixed at the right side of the sleeve body 1 and at the upper and lower ends of the left side of the embedded part 2, two groups of first connecting blocks 3 at the same side are connected by the first fastening bolt 4 in a screw manner, the embedded part 2 is internally provided with threads, the connecting part 5 is located at the left side of the sleeve body 1, the connecting part 5 is internally provided with internal threads, a plurality of groups of second fixing blocks 6 are respectively fixed at the left side of the sleeve body 1 and at the upper and lower ends of the right side of the connecting part 5, two groups of second fixing blocks 6 at the same side are connected by the second fastening bolts 7 in a screw manner, the annular connecting block 8 is fixed at the right end of the embedded part 2, the plurality of groups of inserting rods 9 are respectively and uniformly fixed at the right end of the embedded part 2 and the front and back ends of the embedded part 2, the plurality of groups of rotating rods 10 are respectively fixed at the upper and lower ends of the embedded part 2 and the connecting part 5, the rotating rods 10 are positioned at the outer sides of the first connecting block 3 and the second fixing block 6, and the two groups of sealing rings 11 are respectively and fixedly clamped at the connecting parts of the embedded part 2 and the sleeve main body 1 and the connecting part 5 and the sleeve main body 1; the embedded part 2 is connected with the external reserved steel bar in a screw-mounting way, meanwhile, the threaded steel bar with the diameter slightly smaller than the inner diameter of the sleeve main body 1 is selected, the steel bar is connected with the connecting piece 5 in the screw-mounting way, part of the steel bar enters the sleeve main body 1, then, slurry is injected into the sleeve main body 1, the slurry can be filled between the steel bar and the inner thread of the sleeve main body 1, meanwhile, concrete is injected into the outer part of the sleeve main body 1, the connection strength with the concrete degree is increased through the outer thread of the sleeve main body 1, so that the connection of the steel bar is completed, the connection strength between the steel bar and the inner part of the sleeve main body 1 is enhanced, the stability of the device for connecting the steel bar is improved, then, the strength of the embedded part 2 connected with the concrete degree when being embedded in the concrete is increased through the annular connecting block 8 and the inserted rod 9, the structural stability of the device is further improved, and then, through the rotating rod 10, be convenient for twist and move built-in fitting 2 or connecting piece 5 for the device can be quick be connected with reinforcing bar spiral shell dress, improve the use convenience of device, and through setting up sealing washer 11, avoid outside concrete to enter into sleeve main part 1 in, improve the leakproofness of device.

The utility model discloses a double helix screw thread grout sleeve and subassembly for steel bar connection, its mounting means, connected mode or set up the mode and be common mechanical type, as long as can reach all can implement of its beneficial effect.

All technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The double-spiral-thread grouting sleeve and the assembly for connecting the steel bars are characterized by comprising a sleeve main body (1), embedded parts (2), a plurality of groups of first connecting blocks (3), a plurality of groups of first fastening bolts (4), a connecting piece (5), a plurality of groups of second fixing blocks (6) and a plurality of groups of second fastening bolts (7), wherein external threads are arranged on the outer part of the sleeve main body (1), internal threads are arranged on the inner part of the sleeve main body, the internal threads and the external threads of the sleeve main body (1) are opposite, a grouting pipe is arranged at the front end of the left side of the sleeve main body (1), a grout discharging pipe is arranged at the rear end of the right side of the sleeve main body, sealing plugs are arranged on the grouting pipe and the grout discharging pipe of the first fastening bolts (4), the embedded parts (2) are positioned at the right end of the sleeve main body (1), the plurality of groups of first connecting blocks (3) are respectively fixed at the right side of the sleeve main body (1) and at the upper end and the lower end of the left side of the embedded parts (2), connect through first fastening bolt (4) spiral shell dress between two sets of first connecting blocks (3) of homonymy, and the inside of built-in fitting (2) is provided with the screw thread, connecting piece (5) are located the left side of sleeve main part (1), the internal thread also is used to connecting piece (5) inside, upper and lower both ends on sleeve main part (1) left side and connecting piece (5) right side are fixed respectively in multiunit second fixed block (6), connect through second fastening bolt (7) spiral shell dress between two sets of second fixed blocks (6) of homonymy.

2. The double-helix threaded grouting sleeve and assembly for reinforcing steel bar connection according to claim 1, further comprising an annular connecting block (8) and a plurality of groups of inserted rods (9), wherein the annular connecting block (8) is fixed at the right end of the embedded part (2), and the plurality of groups of inserted rods (9) are respectively and uniformly fixed at the right end of the embedded part (2) and the front end and the rear end of the embedded part (2).

3. The double-helix threaded grouting sleeve and assembly for rebar connection according to claim 1, further comprising a plurality of sets of rotating rods (10), wherein the plurality of sets of rotating rods (10) are respectively fixed at the upper and lower ends of the embedded part (2) and the connecting part (5), and the rotating rods (10) are located outside the first connecting block (3) and the second fixing block (6).

4. The double-spiral-thread grouting sleeve and assembly for reinforcing steel bar connection according to claim 1, further comprising two sets of sealing rings (11), wherein the two sets of sealing rings (11) are respectively and fixedly clamped at the joints of the embedded part (2) and the sleeve main body (1) and the joints (5) and the sleeve main body (1).

5. The double spiral grouting sleeve and assembly for steel reinforcement connection according to claim 1, wherein the sleeve body (1) is a seamless steel pipe.

6. The double spiral grouting sleeve and assembly for steel reinforcement connection according to claim 1, wherein the rotation rod (10) is provided with an anti-slip thread.