CN217812435U - Grout sleeve reinforcing bar installation positioner for steel bar connection - Google Patents
Grout sleeve reinforcing bar installation positioner for steel bar connection Download PDFInfo
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- CN217812435U CN217812435U CN202221118854.6U CN202221118854U CN217812435U CN 217812435 U CN217812435 U CN 217812435U CN 202221118854 U CN202221118854 U CN 202221118854U CN 217812435 U CN217812435 U CN 217812435U
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Abstract
The utility model discloses a grouting sleeve steel bar mounting and positioning device for steel bar connection, which comprises a bar body, a positioning end head and a connecting end head, wherein the outer diameters of the positioning end head and the connecting end head are both smaller than the minimum inner peripheral diameter of the grouting sleeve; the end part of the positioning end is provided with a positioning groove, the inner periphery of the positioning groove is of a variable cross-section structure, and the positioning groove is used for positioning the end part of the reinforcing steel bar; the connecting end is provided with at least one connecting hole and is used for being detachably connected with the template; the total axial length of the rod body, the positioning end head and the connecting end head is not shorter than half of the length of the grouting sleeve; the embedded section steel bars are strictly centered, the steel bars are prevented from being attached to the inner wall of the grouting sleeve, the bonding contact area of the embedded section steel bars and the grouting material is ensured, and the connection effectiveness is ensured; and the phenomenon of shortening the anchoring length of the grouting end caused by the sinking of the pier stud reinforcing steel bar under the impact of the concrete in the concrete pouring process can be avoided.
Description
Technical Field
The utility model relates to grout sleeve technical field, concretely relates to grout sleeve rebar installation positioner for steel bar connection.
Background
The connection mode of the grouting sleeve is widely applied to entity engineering at present as an important connection component in prefabricated assembly engineering, and the mechanical property and the steel bar connection reliability of the grouting sleeve play a critical role in the safety of the structure.
The grouting sleeve can be divided into a nodular cast iron grouting sleeve (as shown in figure 1 in the specification) and a mechanical grouting sleeve according to different processing and forming modes of the grouting sleeve, wherein the nodular cast iron grouting sleeve is formed by casting, and the mechanical grouting sleeve is formed by cutting or pressure processing. Although the two molding modes are different, the working principles are basically consistent: inside inserting the sleeve with the coupling bar, at the inside grout of pouring of sleeve, form inseparable meshing between the inside shear force groove of sleeve and protruding structure and the reinforcing bar horizontal rib after the grout sclerosis. One end connecting reinforcement can produce normal stress under the effect of axial force, the reinforcing bar under the effect of the cone wedge of reinforcing bar, conveys normal force to grout sleeve through the grout material, and the sleeve conveys the connecting reinforcement to the other end through stress transfer, and reinforcing bar, grout material, grout sleeve form whole atress system from this, accomplish the atress transmission.
The cast iron sleeve is cast and molded, the position and the form of the shear groove in the cast iron sleeve can be cast and produced in a customized mode, but the shear groove of the mechanical processing grouting sleeve is formed by cutting or pressure processing, the cutting production efficiency is low, the requirements of a large number of projects cannot be met, the product cost is high due to large waste, the pressure processing mode is influenced by the characteristics of steel, and the shear groove cannot be subjected to excessive deformation processing, so that the stress performance of the sleeve is prevented from being influenced.
Need the reinforcing bar strictly placed in the middle in prefab production process, prevent the reinforcing bar off normal, paste the sleeve inner wall, avoid grout material and reinforcing bar bond to wrap up incompletely, machining grout sleeve receives the influence of processing technology and can't accomplish the accurate location of inner wall, and machining grout sleeve adopts section of thick bamboo wall body middle part subtend drilling in the past simultaneously, and the installation is to wearing the locating pin, and this form has weakened telescopic effective stress cross section area, weakens telescopic atress performance and influences engineering quality safety.
The Chinese utility model patent (publication No. CN 210685182U) discloses a grouting sleeve steel bar positioning tool in 2020, a steel bar is reserved in the grouting sleeve, the distance between the reserved steel bar and the outer side of the grouting sleeve is a limiting distance, and the grouting sleeve steel bar positioning tool comprises a limiting screw rod, a limiting notch, a limiting nut, an expansion rubber plug, a gasket and two adjusting nuts; the limiting nut is fixed on the limiting screw, the expansion rubber plug is of a hollow structure, a groove matched with the shape of the limiting nut is formed in one end in contact with the limiting nut, the gasket and the two adjusting nuts penetrate the limiting screw in sequence, and the distance between the inner side surface of the gasket and the inner side opening of the limiting groove opening is a limiting distance. Although the positioning tool can play a role in positioning the reinforcing steel bars, the positioning tool is complex in connection and installation, and needs to be matched with the expansion rubber plug for use, and the positioning tool cannot be detached and recycled after being used.
Disclosure of Invention
The utility model aims at providing a grout sleeve reinforcing bar installation positioner for steel bar connection to the problem that prior art exists.
In order to achieve the above object, the utility model adopts the following technical scheme:
a grouting sleeve steel bar installation positioning device for steel bar connection comprises a bar body, wherein one end of the bar body is provided with a positioning end head, the other end of the bar body is provided with a connecting end head, and the outer diameters of the positioning end head and the connecting end head are both smaller than the minimum inner peripheral diameter of a grouting sleeve; the end part of the positioning end is provided with a positioning groove, the inner circumference of the positioning groove is of a variable cross-section structure, and the positioning groove is used for positioning the end part of the reinforcing steel bar; the connecting end is provided with at least one connecting hole and is used for being detachably connected with the template; the total axial length of the rod body, the positioning end head and the connecting end head is not shorter than half of the length of the grouting sleeve.
This positioner passes through the location end connect the end with the setting of barred body can guarantee the centering effect of machining grout sleeve in assembly end (prefabricated end) reinforcing bar installation, improves the atress performance in coordination of grout sleeve-grout material-reinforcing bar, guarantees the engineering quality, promotes engineering quality security.
This positioner simple structure, easy to use, to the centering location of reinforcing bar when can be used for grout sleeve steel bar installation, guarantee that assembly end reinforcing bar is strictly placed in the middle, prevent that the reinforcing bar from pasting grout sleeve inner wall, guarantee pre-buried section reinforcing bar and grouting material's bond area of contact, guarantee the validity of connecting.
Simultaneously this positioner can also avoid prefabricated pier stud reinforcing bar and steel form installation to finish the back under guaranteeing the accurate condition of assembly end reinforcing bar location, and the phenomenon that the grouting end anchor length that the pier stud reinforcing bar sinks and appears shortens under the concrete impact among the concreting process, just also avoids the not enough phenomenon of grouting end anchor length.
The connecting end and the positioning end which are respectively arranged at the two ends of the rod body can be inserted into the grouting sleeve and are kept on the same axis with the central axis of the grouting sleeve, and when the connecting end is fixed on a template, the positioning end can be used for centering and positioning the reinforcing steel bar.
The positioning groove is arranged to facilitate centering connection of the steel bars, so that the end parts of the steel bars are abutted to the bottom surface of the positioning groove; the connecting hole can be connected with a fastening bolt, the connecting end, namely the whole positioning device is temporarily fixed on the template, and after the reinforcing steel bar at the other end is centered and fixed, the positioning device is detached and taken out, and the reinforcing steel bar at one end is installed.
Furthermore, the variable cross-section structure of the positioning groove is a truncated cone-shaped structure, and an included angle between a bus of the truncated cone-shaped structure and the central axis is 3-20 degrees; the minimum inner diameter of the positioning groove is larger than the outer diameter of the rod body, and the maximum inner diameter of the positioning groove is smaller than the outer diameter of the positioning end head.
The truncated cone-shaped structure has the functions of easy butt joint and easy guiding, and is beneficial to the steel bar to slide in the positioning groove and finish centering and positioning; the minimum inner diameter of the positioning groove is not larger than the diameter of the end part of the steel bar, so that the steel bar cannot deviate after being butted, and the centering effect is ensured.
Furthermore, the groove depth of the positioning groove is not less than 1/2 of the length of the positioning end, the positioning groove, the positioning end and the rod body are arranged in a coaxial line and are arranged in a coaxial line with the grouting sleeve, and therefore a good centering and positioning effect can be achieved.
Further, the length of the connecting end head is greater than that of the positioning end head, and the ratio of the length of the connecting end head to the length of the rod body is 1: 3.5-1: 4.5. the rod body is a long rod, and the rod body can be inserted into the middle of the grouting sleeve.
Furthermore, the outer diameter of the connecting end is 1-5 mm larger than that of the positioning end; the ratio of the outer diameter of the connecting end head to the outer diameter of the rod body is 2:1 to 4:1.
furthermore, the spacing between the positioning end head and the minimum inner circumference of the grouting sleeve is not more than 2mm, and the grouting sleeve can be inserted into the positioning end head without a large circumferential gap.
Furthermore, the positioning end and the connecting end are all integrated with the rod body in a welding or machining mode, and the rod body, the positioning end and the connecting end are all metal pieces.
That is to say, the positioning end and the connecting end are welded to the ends of the rod body, respectively, or the positioning end and the connecting end are machined on a whole rod.
Furthermore, the connecting holes are one and are arranged at the center of the connecting end, or the connecting holes are symmetrically arranged at the center.
Furthermore, the end face of the connecting end is a plane, and the inner diameter of the opening of the positioning groove is at least 3mm larger than that of the reinforcing steel bar. And sealing plugs are respectively arranged at two ends of the grouting sleeve to plug the grouting material.
Further, if the specification of the grouting sleeve is as follows
Namely, the length of the grouting sleeve is 810mm, the outer diameter is 89mm, the wall thickness is 6mm, the inner diameter is 77mm, the minimum inner diameter is 75mm, the insertion depth of the steel bar is 400mm, the outer diameter of the connecting end is 75mm, the length is 80mm, the diameter of the positioning end is 73mm, the length is 50mm, and the diameter of the rod body is 25mm and the length is 310mm; the depth of positioning groove is 30mm, minimum internal diameter is 42mm, the biggest internal diameter is 58mm, the internal diameter of connecting hole is 6mm.
Compared with the prior art, the beneficial effects of the utility model are that: 1. the positioning device is simple in structure and easy to use, can be used for centering and positioning the steel bars when the steel bars of the grouting sleeve are installed, ensures that the steel bars at the assembling end are strictly centered, prevents the steel bars from being attached to the inner wall of the grouting sleeve, ensures the bond contact area of the embedded section steel bars and the grouting material, ensures the connection effectiveness, improves the cooperative stress performance of the grouting sleeve, the grouting material and the steel bars, ensures the engineering quality and improves the engineering quality safety; 2. the positioning device can also avoid the phenomenon that the anchoring length of the grouting end is shortened due to the sinking of pier column steel bars under the impact of concrete in the concrete pouring process after the prefabricated pier column steel bars and the steel templates are installed under the condition of ensuring the accurate positioning of the steel bars at the assembling end; 3, the positioning groove is arranged to facilitate the centering connection of the reinforcing steel bars, so that the end parts of the reinforcing steel bars are abutted to the bottom surface of the positioning groove; the connecting holes can be connected with fastening bolts, and the connecting end, namely the whole positioning device is temporarily fixed on the template; 4. this positioner can dismantle after the reinforcing bar centering is installed, can retrieve and use repeatedly.
Drawings
Fig. 1 is a schematic structural view of a nodular cast iron grouting sleeve;
fig. 2 is a schematic structural view of the installation and positioning device for the steel bar of the grouting sleeve for connecting the steel bars of the present invention;
FIG. 3 is a schematic view of the end face structure of the positioning end of the present invention;
fig. 4 is a schematic view of the grouting sleeve of the present invention without steel bars inserted;
fig. 5 is a schematic view of the positioning of the steel bar before grouting by the grouting sleeve of the present invention;
fig. 6 is a schematic diagram of the grouting sleeve of the present invention after grouting;
FIG. 7 isbase:Sub>A schematic view of the cross-sectional structure A-A of FIG. 5;
FIG. 8 is a schematic cross-sectional view taken along line B-B of FIG. 6;
in the figure: 1. grouting a sleeve; 101. grouting holes; 102. a slurry outlet; 2. a rod body; 3. connecting the end heads; 4. connecting holes; 5. positioning an end socket; 6. a positioning groove; 7. assembling end reinforcing steel bars; 8. grouting end reinforcing steel bars; 9. a template; 10. fastening a bolt; in fig. 1D is the outer diameter of the grout sleeve and D is the minimum inner diameter of the grout sleeve.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 2 and 3, the device for installing and positioning the steel bar of the grouting sleeve for connecting the steel bar comprises a bar body 2, wherein one end of the bar body 2 is provided with a positioning end 5, the other end of the bar body is provided with a connecting end 3, and the outer diameters of the positioning end 5 and the connecting end 3 are both smaller than the minimum inner peripheral diameter of the grouting sleeve 1; the end part of the positioning end 5 is provided with a positioning groove 6, the inner periphery of the positioning groove 6 is of a variable cross-section structure, and the positioning groove 6 is used for positioning the end part of the reinforcing steel bar; the middle part of the connecting end 3 is provided with a connecting hole 4, and the connecting end 3 is used for being detachably connected with a template; the total axial length of the rod body 2, the positioning end 5 and the connecting end 3 is not shorter than half of the axial length of the grouting sleeve 1.
This positioner passes through location end 5 connect end 3 with the setting of barred body 2 can guarantee the centering effect of machining grout sleeve in assembly end (prefabricated end) reinforcing bar installation, improves the atress performance in coordination of grout sleeve-grout material-reinforcing bar, guarantees the engineering quality, promotes engineering quality security.
This positioner simple structure, easy to use, to the centering location of reinforcing bar when can be used for grout sleeve steel bar installation, guarantee that assembly end reinforcing bar is strictly placed in the middle, prevent that the reinforcing bar from pasting grout sleeve inner wall, guarantee pre-buried section reinforcing bar and grouting material's bond area of contact, guarantee the validity of connecting.
Simultaneously this positioner can also avoid prefabricated pier stud reinforcing bar and steel form installation to finish the back under guaranteeing the accurate condition of assembly end reinforcing bar location, and the phenomenon that the grouting end anchor length that the pier stud reinforcing bar sinks and appears shortens under the concrete impact among the concreting process, just also avoids the not enough phenomenon of grouting end anchor length.
The connecting end 3 and the positioning end 5 which are respectively arranged at two ends of the rod body 2 can be inserted into the grouting sleeve 1 and are kept on the same axis with the central axis of the grouting sleeve 1, and when the connecting end 3 is fixed on the formwork 9, the positioning end 5 can be used for centering and positioning the reinforcing steel bars.
The positioning groove 6 is convenient for centering connection of the steel bars, and the end parts of the steel bars are abutted to the bottom surface of the positioning groove; the connecting holes 4 can be connected with fastening bolts 10, the connecting end 3, namely the whole positioning device, is temporarily fixed on the template 9, and after the reinforcing steel bars at the other end are centered and fixed, the positioning device is detached and taken out, and the reinforcing steel bars at one end are installed.
Furthermore, the variable cross-section structure of the positioning groove 6 is a truncated cone-shaped structure, and the truncated cone-shaped structure has the functions of easy butt joint and guiding, so that the steel bar can slide in the positioning groove and can be centered and positioned; the minimum inner diameter of the positioning groove is not larger than the diameter of the end part of the steel bar, so that the steel bar cannot deviate after being butted, and the centering effect is ensured.
Furthermore, the positioning groove 6, the positioning end 5 and the rod body 2 are arranged in a coaxial line and are arranged in a coaxial line with the grouting sleeve 1, so that a good centering and positioning effect can be achieved.
Further, the distance between the positioning end 5 and the minimum inner circumference of the grouting sleeve 1 is not more than 2mm, so that the grouting sleeve can be inserted without a large circumferential gap.
As shown in FIGS. 4 to 8, the specification is defined as
The grouting sleeve of (1) is for example, namely the length of the grouting sleeve 1 is 810mm, the outer diameter is 89mm, the wall thickness is 6mm, the inner diameter is 77mm, and the minimum inner diameter is 75mm, the insertion depth of the steel bar is 400mm, the middle 10mm is used as the installation adjustment length, then the outer diameter of the connecting end head 3 is 75mm, the length is 80mm, the diameter of the positioning end head 5 is 73mm, the length is 50mm, and the diameter of the rod body 2 is 25mm, and the length is 310mm; the depth of positioning groove 6 is 30mm, minimum internal diameter is 42mm, maximum internal diameter is 58mm, the internal diameter of connecting hole 4 is 6mm.
When the grouting sleeve is installed, the connecting end 3 is fixed on the template 9 through a fastening bolt 10, and then the grouting sleeve 1 is sleeved on the positioning device, namely the positioning end 5 is inserted into the middle of the grouting sleeve 1; inserting the assembly end steel bar 7 into the grouting sleeve 1, wherein the end part of the assembly end steel bar 7 is automatically centered due to the existence of the positioning groove 6, binding the steel bar, installing a pier column template, and pouring pier column concrete for maintenance; after the form is removed, hoisting the pier stud, separating the connecting end 3 from the template 9, taking out the whole positioning device from the grouting sleeve 1, and recovering the positioning device; and then connecting the grouting sleeve 1 with a grouting end reinforcing steel bar 8 and injecting grouting material to complete grouting operation.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. A grouting sleeve steel bar mounting and positioning device for steel bar connection is characterized by comprising a bar body, wherein one end of the bar body is provided with a positioning end, the other end of the bar body is provided with a connecting end, and the outer diameters of the positioning end and the connecting end are smaller than the minimum inner peripheral diameter of a grouting sleeve; the end part of the positioning end is provided with a positioning groove, the inner periphery of the positioning groove is of a variable cross-section structure, and the positioning groove is used for positioning the end part of the reinforcing steel bar; the connecting end is provided with at least one connecting hole and is used for being detachably connected with the template; the total axial length of the rod body, the positioning end head and the connecting end head is not shorter than half of the length of the grouting sleeve.
2. The grouting sleeve steel bar installation and positioning device for steel bar connection according to claim 1, wherein the variable cross-section structure of the positioning groove is a truncated cone-shaped structure, and an included angle between a bus of the truncated cone-shaped structure and a central axis is 3-20 degrees; the minimum inner diameter of the positioning groove is larger than the outer diameter of the rod body, and the maximum inner diameter of the positioning groove is smaller than the outer diameter of the positioning end head.
3. The rebar installation and positioning device for the grouting sleeve for connecting the rebars as claimed in claim 1, wherein the depth of the positioning groove is not less than 1/2 of the length of the positioning end head, and the positioning groove, the positioning end head and the rod body are arranged in a common central axis.
4. A grouting sleeve reinforcing steel bar installation and positioning device for reinforcing steel bar connection according to claim 1, wherein the length of the connection end is greater than that of the positioning end, and the ratio of the length of the connection end to the length of the rod body is 1: 3.5-1: 4.5.
5. the rebar installation positioning device for the grouting sleeve for connecting the rebars as claimed in claim 1, wherein the outer diameter of the connecting end is 1-5 mm larger than that of the positioning end; the ratio of the outer diameter of the connecting end head to the outer diameter of the rod body is 2:1 to 4:1.
6. a rebar installation positioning device for a grouting sleeve for connecting rebars as claimed in claim 1, wherein the distance between the positioning end and the minimum inner circumference of the grouting sleeve is not more than 2mm.
7. The rebar installation and positioning device for the grouting sleeve for connecting the rebars as claimed in claim 1, wherein the positioning end head and the connecting end head are welded or machined with the rod body to form an integral structure, and the rod body, the positioning end head and the connecting end head are all made of metal pieces.
8. The reinforcing bar installing and positioning device for a grouting sleeve used for connecting reinforcing bars of claim 1, wherein the number of the connecting holes is one and is set up at the center of the connecting end, or the number of the connecting holes is a plurality of holes which are centrally symmetrically set up.
9. The reinforcing bar installing and positioning device for a grouting sleeve used for connecting reinforcing bars as claimed in claim 1, wherein the end surfaces of the connecting ends are flat.
10. The reinforcing bar installing and positioning device of a grouting sleeve for reinforcing bar connection according to claim 1, wherein if the grouting sleeve has a specification of
Namely, the length of the grouting sleeve is 810mm, the outer diameter of the grouting sleeve is 89mm, the wall thickness of the grouting sleeve is 6mm, the inner diameter of the grouting sleeve is 77mm, the minimum inner diameter of the grouting sleeve is 75mm, the insertion depth of the reinforcing steel bar is 400mm, the outer diameter of the connecting end is 75mm, the length of the connecting end is 80mm, the diameter of the positioning end is 73mm, the length of the positioning end is 50mm, and the diameter of the rod body is 25mm, and the length of the rod body is 310mm; the depth of the positioning groove is 30mm, the minimum inner diameter is 42mm, and the maximum inner diameter is 58mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221118854.6U CN217812435U (en) | 2022-05-11 | 2022-05-11 | Grout sleeve reinforcing bar installation positioner for steel bar connection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221118854.6U CN217812435U (en) | 2022-05-11 | 2022-05-11 | Grout sleeve reinforcing bar installation positioner for steel bar connection |
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| Publication Number | Publication Date |
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| CN217812435U true CN217812435U (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221118854.6U Active CN217812435U (en) | 2022-05-11 | 2022-05-11 | Grout sleeve reinforcing bar installation positioner for steel bar connection |
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| CN (1) | CN217812435U (en) |
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- 2022-05-11 CN CN202221118854.6U patent/CN217812435U/en active Active
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