CN211114442U - Double-helix thread grouting sleeve and assembly for connecting prefabricated part steel bars - Google Patents
Double-helix thread grouting sleeve and assembly for connecting prefabricated part steel bars Download PDFInfo
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- CN211114442U CN211114442U CN201921761990.5U CN201921761990U CN211114442U CN 211114442 U CN211114442 U CN 211114442U CN 201921761990 U CN201921761990 U CN 201921761990U CN 211114442 U CN211114442 U CN 211114442U
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Abstract
The utility model discloses a double helix thread grouting sleeve and assembly for connecting prefabricated part steel bars, which comprises a sleeve, wherein the sleeve is of a hollow structure, the outer side wall of the sleeve is provided with an outer wall helical structure, the inner side wall of the sleeve is provided with an inner wall helical structure, and the rotation directions of the inner wall helical structure and the outer wall helical structure are opposite; and one end of the outer side of the sleeve is provided with a grouting hole communicated with the inner side, and the other end of the outer side of the sleeve is provided with a grout discharging hole communicated with the inner side. This grout sleeve adopts inside and outside double helix structure, when being used for precast concrete component steel bar connection, can strengthen the inside grout material of sleeve and outside concrete and telescopic cohesive strength.
Description
Technical Field
The utility model belongs to the technical field of bridge construction grout sleeve, concretely relates to double helix screw thread grout sleeve and subassembly for prefabricated component steel bar connection.
Background
At present, the grouting sleeve connection is widely applied to prefabricated assembly type structural steel bar connection and is a relatively mature connecting technology of a prefabricated concrete steel bar component. The grouting sleeve connection is suitable for a precast concrete construction mode, the hoisting of components and the connection operation of reinforcing steel bars can be separately carried out, the connection mode has high tensile strength and compressive strength, the performance is safe, reliable and stable, the construction operation is convenient, and the requirements on construction equipment and the quality of operating personnel are simple.
The prior patent discloses some grouting sleeves, such as a grouting deformed steel pipe sleeve in butt joint of a reinforced bar grout anchor, which has the defects of heavy sleeve volume, large steel consumption, high cost and time and material waste in sleeve processing; and because the volume of the sleeve is larger, the using amount of the used high-strength grouting material is larger. And 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.
SUMMERY OF THE UTILITY MODEL
The present disclosure aims to overcome the above disadvantages of the prior art, and provides a double-helix thread grouting sleeve and assembly for connecting prefabricated steel bars; this grout sleeve adopts inside and outside double helix structure, when being used for precast concrete component steel bar connection, can strengthen the inside grout material of sleeve and outside concrete and telescopic cohesive strength.
The first purpose of this disclosure is to propose a double helix screw thread grout sleeve for prefabricated component steel bar connection, in order to realize above-mentioned purpose, this disclosure adopts following technical scheme:
a double-spiral thread grouting sleeve for connecting prefabricated part steel bars comprises a sleeve, wherein the sleeve is of a hollow structure, an outer wall spiral structure is arranged on the outer side wall of the sleeve, an inner wall spiral structure is arranged on the inner side wall of the sleeve, and the spiral directions of the inner wall spiral structure and the outer wall spiral structure are opposite; and one end of the outer side of the sleeve is provided with a grouting hole communicated with the inner side, and the other end of the outer side of the sleeve is provided with a grout discharging hole communicated with the inner side.
The working principle of the grouting sleeve is as follows:
set up inner wall helical structure at the sleeve inside wall, set up outer wall helical structure at the sleeve lateral wall, after grouting material was gone into to the sleeve like this, inner wall helical structure can strengthen grout material and telescopic bonding strength, and outer wall helical structure has then strengthened outside concrete and telescopic bonding strength.
As a further technical scheme, the screw pitches of the inner wall spiral structure and the outer wall spiral structure are equal, and the inner wall spiral structure and the outer wall spiral structure are symmetrically arranged by using the sleeve axis.
As a further technical scheme, an end head of one end of the sleeve, provided with the grout discharging hole, is provided with a pre-buried end, and the pre-buried end is a cylinder with a polygonal outer edge.
As a further technical scheme, the embedded end is fixedly connected with the sleeve.
As a further technical scheme, a conical sealing ring is arranged at the joint of the sleeve and the embedded end.
As a further technical scheme, the longitudinal section area of the embedded end is smaller than that of the sleeve.
As a further technical scheme, the embedded end is provided with a through hole communicated with the hollow structure of the sleeve, and the wall of the through hole is provided with an internal thread.
As a further technical scheme, the sleeve is made of a seamless steel pipe.
The second purpose of this disclosure provides a sleeve reinforcing bar subassembly, includes as above double helix screw thread grout sleeve, inserts ribbed steel bar in the sleeve, and the sleeve sets up the one end of arranging the thick liquid hole and is connected with another reinforcing bar.
The beneficial effect of this disclosure does:
the utility model discloses a grout sleeve, sleeve inner wall and outer wall all set up helical structure, at the inside and outside helical thread that forms of sleeve, have strengthened inside grout material and outside concrete and telescopic bonding strength by a wide margin, have improved the bonding effect.
Compared with casting forming, the seamless steel pipe used for the grouting sleeve is high in strength, good in toughness, simple and convenient to manufacture, high in machining efficiency, small in material consumption, low in price and reliable in quality.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic view of the overall construction of a grout sleeve as disclosed in one embodiment;
FIG. 2 is a schematic longitudinal section of FIG. 1;
in the figure, 1 sleeve, 2 outer wall helical structure, 3 inner wall helical structure, 4 grout holes, 5 rows of grout holes, 6 embedded ends and 7 conical sealing rings.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, 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 application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in this disclosure, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate description of the disclosure and simplify description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the disclosure.
As described in the background art, the grouting sleeve of the prior art has disadvantages, and in order to solve the above technical problems, the present application provides a double-spiral-thread grouting sleeve and assembly for connecting reinforcement bars of prefabricated parts.
The application provides a double-spiral thread grouting sleeve for connecting prefabricated part steel bars, which comprises a sleeve, wherein the sleeve is of a hollow structure, an outer wall spiral structure is arranged on the outer side wall of the sleeve, an inner wall spiral structure is arranged on the inner side wall of the sleeve, and the rotating directions of the inner wall spiral structure and the outer wall spiral structure are opposite; and one end of the outer side of the sleeve is provided with a grouting hole communicated with the inner side, and the other end of the outer side of the sleeve is provided with a grout discharging hole communicated with the inner side.
Example 1
The grouting sleeve disclosed in the present embodiment will be further described with reference to fig. 1-2;
referring to the attached drawings 1-2, the double-helix thread grouting sleeve for connecting the steel bars of the precast concrete members comprises a sleeve 1, wherein the sleeve 1 is of a hollow structure, an outer wall helical structure 2 is arranged on the outer side wall of the sleeve 1, an inner wall helical structure 3 is arranged on the inner side wall of the sleeve 1, the outer wall helical structure 2 and the inner wall helical structure 3 are both of continuous helical structures,
the spiral direction of inner wall helical structure 3 and outer wall helical structure 2 is opposite, and the pitch of inner wall helical structure 3 and outer wall helical structure 2 equals, and the two sets up with 1 axis symmetry of sleeve, and inner wall helical structure 3 and outer wall helical structure 2 lay with the form of crossing in the sleeve inside and outside promptly. The inner wall spiral structure 3 and the outer wall spiral structure 2 enhance the bonding effect of the sleeve and concrete, the combined action of the inner concrete protective layer and the outer concrete protective layer of the prefabricated part sleeve is improved, meanwhile, the two spiral structures are arranged in opposite rotating directions and symmetrically arranged along the axis of the sleeve 1, the stress balance on the section of the sleeve is improved, and the overall strength of the sleeve is improved.
Outer wall helical structure 2, inner wall helical structure 3 all with welding form and muffjoint, outer wall helical structure 2, inner wall helical structure 3 form double helix thread form at the internal and external surface of sleeve, after grouting material to the sleeve, inner wall helical structure screw thread has strengthened grout material and telescopic cohesive strength, and outer wall helical structure screw thread has strengthened outside concrete and telescopic cohesive strength.
The one end in the 1 outside of sleeve sets up the grout hole 4 with inboard intercommunication, and the other end in the 1 outside of sleeve sets up the row's thick liquid hole 5 with inboard intercommunication for grouting material. High-strength and micro-expansion grouting material is filled into the cavity of the sleeve 1.
The sleeve is provided with a grouting pipe connected with the grouting hole and the grout discharging hole, one end of the grouting pipe is provided with a thread connected with the grouting hole and the grout discharging hole on the sleeve, and the grouting pipe is connected with the grouting hole and the grout discharging hole during grouting and then grouting is carried out. The grouting pipe is provided with a pipe plug for plugging before and after grouting, and the pipe plug is made of rubber or plastics. The end part of the grouting pipe is provided with a plug for plugging the grouting material.
The end head of one end of the sleeve 1, which is provided with the grout discharging hole 5, is provided with a pre-buried end 6, and the pre-buried end 5 is a cylinder with a polygonal outer edge. Pre-buried end 6 and sleeve 1 fixed connection, as an organic whole with pre-buried end 6 and sleeve 1 welding in this embodiment, pre-buried 6 connecting thread reinforcing bars of end, the sleeve of being convenient for is fixed a position in the template.
The tapered sealing ring 7 is arranged at the joint of the sleeve 1 and the embedded end 6, so that concrete is prevented from entering the sleeve during prefabrication and is made of rubber.
The structure size of the embedded end 6 is smaller than that of the sleeve, namely the longitudinal section area of the embedded end 6 is smaller than that of the sleeve 1, and the longitudinal section is in the radial section direction of the sleeve 1.
The embedded end 6 is provided with a through hole communicated with the hollow structure of the sleeve 1, and the wall of the through hole is provided with an internal thread. The threaded hole at the embedded end is connected with the threaded steel bar which is rolled in advance, so that the sleeve can be positioned in the template conveniently.
The other end of sleeve 1 for pre-buried end is on-the-spot assembly end, and this end drill way has great clearance with the reinforcing bar, can absorb error and installation deviation on the component manufacturing when guaranteeing the on-the-spot installation.
In this embodiment, the sleeve 1 is made of a seamless steel pipe.
The use mode of grout sleeve of this disclosure does:
when the bridge component is prefabricated, a sleeve with double-spiral threads is installed on the prefabricated component according to reinforcing bars, and the length of the inserted ribbed reinforcing bars is slightly smaller than the axial length of an inner cavity of the sleeve. The inserted rebar may take the form of a butt joint. The two prefabricated components are connected through the sleeve, the early-strength and micro-expansion grouting material is poured through the grouting hole in the outer wall of the sleeve, and after the grouting material is cured to the specified strength, the reinforcing steel bars are firmly fixed with the concrete outside the sleeve and the hole to form a unified whole, so that the connection between the reinforcing steel bars is completed.
After grouting, force transmission between the reinforcing steel bars is realized by virtue of the bonding action and the mechanical engagement action between the materials. The grouting sleeve is reasonable in structure, simple in manufacturing method, low in material consumption, reliable in quality and excellent in service performance. Double-helix threads are used inside and outside the sleeve, so that the function of connecting the steel bars by grouting the sleeve is effectively enhanced.
The utility model also provides a sleeve reinforcing bar subassembly, include as above double helix thread grout sleeve, insert ribbed steel bar in the sleeve, the sleeve sets up the one end and another steel bar connection in row's thick liquid hole, the threaded connection of this reinforcing bar and pre-buried end.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (9)
1. A double-spiral thread grouting sleeve for connecting prefabricated part steel bars is characterized by comprising a sleeve, wherein the sleeve is of a hollow structure, an outer wall spiral structure is arranged on the outer side wall of the sleeve, an inner wall spiral structure is arranged on the inner side wall of the sleeve, and the spiral directions of the inner wall spiral structure and the outer wall spiral structure are opposite; and one end of the outer side of the sleeve is provided with a grouting hole communicated with the inner side, and the other end of the outer side of the sleeve is provided with a grout discharging hole communicated with the inner side.
2. The double helical threaded grout sleeve of claim 1, wherein the helical structure of the inner wall and the helical structure of the outer wall have the same pitch and are symmetrically disposed about the sleeve axis.
3. The double-spiral-thread grouting sleeve as claimed in claim 1, wherein an end of the sleeve at which the grout outlet is provided with a pre-buried end, and the pre-buried end is a cylinder with a polygonal outer edge.
4. The double-spiral-thread grouting sleeve as claimed in claim 3, wherein the pre-buried end is fixedly connected with the sleeve.
5. The double-spiral-thread grouting sleeve as claimed in claim 4, wherein a conical sealing ring is arranged at the joint of the sleeve and the embedded end.
6. The double-spiral-thread grouting sleeve as claimed in claim 3, wherein the longitudinal sectional area of the embedded end is smaller than that of the sleeve.
7. The double-spiral-thread grouting sleeve as claimed in claim 3, wherein the pre-embedded end is provided with a through hole communicated with the hollow structure of the sleeve, and the wall of the through hole is provided with internal threads.
8. The double spiral grouting sleeve of claim 1, wherein the sleeve is made of seamless steel pipe.
9. A sleeve reinforcing bar assembly, comprising the double spiral grouting sleeve according to any one of claims 1 to 8, wherein ribbed reinforcing bars are inserted into the sleeve, and one end of the sleeve provided with grout outlet holes is connected with another reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921761990.5U CN211114442U (en) | 2019-10-18 | 2019-10-18 | Double-helix thread grouting sleeve and assembly for connecting prefabricated part steel bars |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921761990.5U CN211114442U (en) | 2019-10-18 | 2019-10-18 | Double-helix thread grouting sleeve and assembly for connecting prefabricated part steel bars |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211114442U true CN211114442U (en) | 2020-07-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921761990.5U Active CN211114442U (en) | 2019-10-18 | 2019-10-18 | Double-helix thread grouting sleeve and assembly for connecting prefabricated part steel bars |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211114442U (en) |
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2019
- 2019-10-18 CN CN201921761990.5U patent/CN211114442U/en active Active
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