CN212104827U - Half grout sleeve - Google Patents
Half grout sleeve Download PDFInfo
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- CN212104827U CN212104827U CN202020476375.6U CN202020476375U CN212104827U CN 212104827 U CN212104827 U CN 212104827U CN 202020476375 U CN202020476375 U CN 202020476375U CN 212104827 U CN212104827 U CN 212104827U
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- grouting
- sleeve
- sleeve barrel
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Abstract
The utility model relates to the technical field of grouting sleeve preparation, in particular to a semi-grouting sleeve, which comprises a sleeve barrel body, wherein one end of the sleeve barrel body is a grouting anchoring end, the other end of the sleeve barrel body is a mechanical connecting end, the diameter of the mechanical connecting end is smaller than that of the sleeve barrel body, and the sleeve barrel body is manufactured in a hot forging extrusion reducing mode; in a use state, a steel bar extends into the grouting anchoring end from the outside in the direction of pointing to the mechanical connecting end from the grouting anchoring end, a gap for containing grouting materials is formed between the steel bar and the inner wall of the sleeve barrel, and the other steel bar extends into the mechanical connecting end from the outside in the direction of pointing to the grouting anchoring end from the mechanical connecting end and is fixed on the mechanical connecting end. The utility model provides a half grout sleeve has advantages such as with low costs, stable in quality.
Description
Technical Field
The utility model belongs to the technical field of prefabricated assembly type construction engineering equipment technique and specifically relates to a half grout sleeve is related to.
Background
The steel bar sleeve joint is one of main steel bar connection modes in the construction process of a prefabricated grouting material structure, and the steel bar connection reliability of two connected parts of components can be ensured by prefabricating a grouting sleeve in the components, assembling the components on site and constructing and maintaining the sleeve in grouting. The prefabricated building adopting the sleeve grouting connection steel bars has the advantages of reliable earthquake resistance, energy conservation and emission reduction, simple and convenient construction, greatly shortened construction period and the like; through the sleeve of selecting different specifications, satisfy the connection of different specification reinforcing bars, solved prefabricated assembled building wholeness problem.
The existing grouting sleeve for connecting the reinforcing steel bars can be divided into a full grouting sleeve and a half grouting sleeve according to the design structure. And compare in full grout sleeve, half grout sleeve has material saving, location more accurate, the grout construction error is little, the less characteristics of hoop effect, has consequently received more and more attention. The machined half-grouting sleeves currently in use generally take three forms. The other is that the integral type half grouting sleeve is manufactured by adopting a 45# steel bar to draw a grouting anchoring cavity in the steel bar through machining, the integrity of the sleeve is good, and the sleeve can have good quality control through an automatic machining lathe, but the machining amount of the method is larger, the amount of generated scrap iron is more, and the production cost is higher. In addition, when the diameter of the connecting steel bar is larger, the depth of the internal cavity is larger, so that the production difficulty is obviously improved; and the second is a split type semi-grouting sleeve prepared by optimization aiming at the problems, the sleeve prepared by the method adopts a machining method, and a 45# steel bar is respectively adopted to process a screw plug for connecting reinforcing steel bars and a 45# steel thick-wall pipe is adopted to process a cylinder for grouting anchoring reinforcing steel bars. The sleeve prepared by the method obviously reduces the production cost and the production difficulty, but the sleeve prepared by the method has two mechanical connecting ends, so that the risk of connection failure is increased.
Aiming at the problems of the two types of semi-grouting sleeves, the third type of semi-grouting sleeve is a semi-grouting sleeve which is manufactured by adopting a 45# rear wall steel pipe, extruding and reducing the diameter of the steel pipe by adopting a cold rolling or hot forging process and extruding and processing the steel pipe. On this basis, combine pyrocondensation reducing technology, utility model discloses machine-shaping efficiency is higher, and the more accurate half grout sleeve of size further improves the connection reliability that grout connects, reduces half grout sleeve manufacturing cost, has promoted the development of prefabricated assembly type structure.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a half grout sleeve to avoid the telescopic manufacturing cost of half grout that exists among the prior art high, the processing degree of difficulty is big, articulate inefficacy risk is big, the difficult technical problem such as control of machining dimension.
In order to alleviate the technical problems, the utility model provides a semi-grouting sleeve, which comprises a sleeve barrel body,
one end of the sleeve barrel is a grouting anchoring end, the other end of the sleeve barrel is a mechanical connecting end, the diameter of the mechanical connecting end is smaller than that of the sleeve barrel, and the sleeve barrel is manufactured in a hot forging extrusion reducing mode;
in a use state, a steel bar extends into the grouting anchoring end from the outside in the direction of pointing to the mechanical connecting end from the grouting anchoring end, a gap for containing grouting materials is formed between the steel bar and the inner wall of the sleeve barrel, and the other steel bar extends into the mechanical connecting end from the outside in the direction of pointing to the grouting anchoring end from the mechanical connecting end and is fixed on the mechanical connecting end.
Further, in the present invention,
the outer surface of the sleeve barrel is provided with an annular indentation, and the inner surface of the sleeve barrel is correspondingly provided with an annular bulge.
Further, in the present invention,
the annular indentation on the outer surface of the sleeve barrel body and the corresponding annular bulge on the inner surface are formed by a rolling process.
Further, in the present invention,
an inner concave shear groove is formed on the inner surface of the sleeve barrel.
Further, in the present invention,
the shear groove is formed by a machining process.
Further, in the present invention,
and threads are arranged in the mechanical connecting end.
Further, in the present invention,
install into thick liquid mouth and play thick liquid mouth on the sleeve barrel, advance thick liquid mouth with the axis of play thick liquid mouth is parallel, just advance thick liquid mouth with play thick liquid mouth all with the inner chamber intercommunication of sleeve barrel.
Further, in the present invention,
an arc-shaped transition area is arranged between the mechanical connecting end and the sleeve barrel body, the mechanical connecting end points to the sleeve barrel body, and the wall thickness of the transition area is gradually increased.
Further, in the present invention,
also comprises an auxiliary piece, the auxiliary piece comprises a main body part and an extension part,
the main part laminating in the inner wall of mechanical connection end, the extension is certainly the main part expands to the outside, and laminate in transition region's inner wall.
Further, in the present invention,
the inner surface of the main body part is provided with threads, and the outer surface of the main body part is provided with bulges.
Technical scheme more than combining, the utility model discloses the beneficial effect that can reach lies in:
1. compared with the prior semi-grouting sleeve preparation process, the hot forging extrusion diameter-reducing process for preparing the mechanical connecting end of the grouting sleeve has the advantages of low cost and stable quality.
2. The concave-convex grooves are formed by machining an inner drawing shear groove or outer rolling, the annular anchoring groove structure can provide better anchoring force, and the prepared semi-grouting sleeve has excellent performance.
3. Because the transition region between mechanical link and the sleeve barrel has the wall thickness nonconformity, and the less position of wall thickness forms the weak area of intensity, pack into the auxiliary member behind the mechanical link, the outside expansion of auxiliary member and the extension portion of laminating in the transition region will increase the wall thickness in transition region, reinforcing transition region's structural strength.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are 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 structural diagram of a half grouting sleeve for forming a rolling groove by rolling according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a semi-grouting sleeve for digging a shear groove on the inner surface of a sleeve barrel by using a machining process according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an auxiliary member according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram illustrating an auxiliary member according to an embodiment of the present invention assembled to a half grouting sleeve having a rolling groove;
fig. 5 is a schematic structural diagram of the auxiliary member assembled to the semi-grouting sleeve having the shear groove according to the embodiment of the present invention.
Icon: 100-sleeve cylinder; 110-rolling grooves; 120-a shear groove; 200-a mechanical connection end; 210-mechanically connecting end reinforcing steel bars; 300-grouting an anchoring end; 310-grouting anchoring end reinforcing steel bars; 400-a pulp inlet nozzle; 410-grouting an orifice; 500-a pulp outlet; 510-a grout outlet; 600-an auxiliary; 610-a main body portion; 620-an extension; 700-transition region.
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 some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Embodiment 1 is described in detail below with reference to fig. 1 to 5:
example one
Referring to fig. 1 to 5 together, the present embodiment provides a half grouting sleeve, which includes a sleeve barrel 100, one end of the sleeve barrel 100 is a grouting anchoring end 300, the other end is a mechanical connecting end 200, the diameter of the mechanical connecting end 200 is smaller than the diameter of the sleeve barrel 100, and the sleeve barrel is manufactured by hot forging, extrusion and diameter reduction;
in a use state, a steel bar extends into the grouting anchoring end 300 from the outside from the direction of the grouting anchoring end 300 pointing to the mechanical connecting end 200, and a gap for containing grouting material is formed between the steel bar and the inner wall of the sleeve cylinder 100; another reinforcing bar is extended from the outside into the mechanical coupling end 200 in a direction from the mechanical coupling end 200 toward the grouted anchoring end 300 and fixed to the mechanical coupling end 200.
For clarity, one of the above-mentioned rebars is named as grouted anchor end rebar 310 and the other rebar is named as mechanical connector end rebar 210.
The grout anchor end reinforcing bars 310 are extended from the outside into the grout anchor end 300 from the direction of the grout anchor end 300 directed to the mechanical link end 200, and the mechanical link end reinforcing bars 210 are extended from the outside into the mechanical link end 200 from the direction of the mechanical link end 200 directed to the grout anchor end 300 and fixed to the mechanical link end 200.
In an alternative to this embodiment, it is preferable that,
in order to provide better anchoring force, the outer surface of the sleeve cylinder 100 is formed with a rolling groove 110. The rolling grooves 110 are formed by a rolling process, see fig. 1 for details. The rolling grooves 110 are arranged in an annular structure, and a plurality of rolling grooves 110 are arranged along the axial direction of the sleeve barrel 100, and the adjacent rolling grooves 110 are equally spaced.
Alternatively, the first and second electrodes may be,
to provide better anchoring force, the inner surface of sleeve barrel 100 is formed with shear grooves 120. The shear groove 120 is formed by a machining process, see fig. 2 for details. A plurality of shear grooves 120 are formed in the inner wall of the sleeve cylinder 100 along the axial direction of the sleeve cylinder 100, and the adjacent shear grooves 120 are arranged at equal intervals.
In an alternative to this embodiment, it is preferable that,
the mechanical connection end 200 is internally provided with threads, and the mechanical connection end reinforcing steel bar 210 can be directly screwed to the mechanical connection end 200 through the threads.
In an alternative to this embodiment, it is preferable that,
the sleeve cylinder 100 is provided with the slurry inlet nozzle 400 and the slurry outlet nozzle 500, the axes of the slurry inlet nozzle 400 and the slurry outlet nozzle 500 are parallel, and the slurry inlet nozzle 400 and the slurry outlet nozzle 500 are both communicated with the inner cavity of the sleeve cylinder 100. Grouting slurry enters the sleeve barrel 100 from the slurry inlet nozzle 400 and flows out from the slurry outlet nozzle 500.
In the embodiment, the mechanical connecting end 200 of the grouting sleeve is prepared by adopting a hot forging extrusion reducing process, and has the advantages of low cost and stable quality.
Example two
Between mechanical coupling end 200 and sleeve barrel 100, there is an arcuate transition region 700, with the wall thickness of transition region 700 tending to increase gradually from mechanical coupling end 200 toward sleeve barrel 100. Thus, the wall thickness is too thin at the beginning of the left side of the transition region 700, which is a weak link in strength.
The auxiliary member 600 includes a main body 610 and an extension 620, the main body 610 is attached to the mechanical connection end 200, and the extension 620 expands outward from the main body 610 and is attached to the transition region 700. Since the extension 620 is attached to the transition region 700 of the half grout sleeve, the wall thickness of the transition region 700 is increased, increasing the structural strength of the region.
Further, threads may be machined on the inner surface of the body portion 610 for connection to the reinforcing bars.
Further, in order to ensure the tight connection of the auxiliary member 600 and the mechanical coupling end 200, protrusions may be formed on the outer surface of the body portion 610 to increase the frictional force.
In this embodiment, various assembling methods of the auxiliary 600 may be adopted:
for example: after the mechanical connection end 200 of the half-grouted sleeve is heat-shrunk, the auxiliary member 600 is assembled, for example, the auxiliary member 600 may be extended into the cylinder of the half-grouted sleeve from the grouting anchoring end 300 and then installed at the mechanical connection end 200.
Another example is: before the mechanical connecting end 200 of the half grouting sleeve is shrunk in diameter, the auxiliary piece 600 is installed on the mechanical connecting end 200, then the whole mechanical connecting end 200 with the auxiliary piece 600 is shrunk in diameter in heat, and finally threads are machined in the shrunk auxiliary piece 600.
The beneficial effects that the auxiliary 600 can achieve are analyzed as follows:
because the transition region 700 between the mechanical connection end 200 and the sleeve barrel 100 has inconsistent wall thickness and a strength weak region is formed at a position with smaller wall thickness, after the auxiliary 600 is installed in the mechanical connection end 200, the wall thickness of the transition region 700 is increased by the extension part 620 of the auxiliary 600 which expands outwards and is attached to the transition region 700, and the structural strength of the transition region 700 is enhanced.
EXAMPLE III
The embodiment provides a method for preparing a hot-die forging molded semi-grouting sleeve, which specifically comprises the following steps:
s1, manufacturing a groove or a convex structure on the inner wall of the sleeve barrel 100;
s2, performing hot forging extrusion and diameter reduction on the mechanical connecting end 200 of the sleeve barrel 100;
s3, drilling a hole on the sleeve barrel 100 to obtain a grout outlet 510 and a grouting outlet 410;
s4, the grout inlet 400 is installed at the grout inlet 410, and the grout outlet 500 is installed at the grout outlet 510.
And S5, performing internal thread machining on the grout inlet nozzle 400 and the grout outlet nozzle 500 by using a tapping machine.
It should be noted that: the sequence of the steps S1 to S5 is not strictly in the order of reference numerals, and the sequence of the steps may be adjusted.
With reference to fig. 1 and 2, the mechanical connecting end 200 of the grouting sleeve is prepared by a hot forging extrusion diameter reduction process, and compared with the conventional semi-grouting sleeve preparation process, the method has the advantages of low cost and stable quality.
The following steps are described in detail:
wherein, step S1 further includes:
s11, rolling the outer surface of the sleeve barrel 100 to form annular indentations by adopting a rolling process,
alternatively, the first and second electrodes may be,
and S12, drawing the shear grooves 120 on the inner surface of the sleeve barrel 100 by adopting a machining process.
Two implementations of step S1 are listed above, specifically:
referring to fig. 1, fig. 1 is a schematic structural view of a half-grouting sleeve for roll forming a shear groove 120 according to an embodiment of the present invention; it is rolled on the outer surface of the sleeve cylinder 100 to form a circular indentation using the step S11, that is, it is rolled on the outer surface of the sleeve cylinder 100 using a rolling process. After the rolling process is adopted to form the annular indentation on the outer surface of the sleeve cylinder 100, the protrusions can be formed in the sleeve cylinder 100 at the same time, and the groove structure is formed between the adjacent protrusions and can improve the bonding strength of the grouting material and the connecting steel bars.
Referring to fig. 2, fig. 2 is a schematic structural view of a half grouting sleeve according to an embodiment of the present invention, in which a shear groove 120 is drawn in an inner surface of a sleeve cylinder 100 by a machining process; the step S12 is adopted, that is, the shear groove 120 is cut in the inner surface of the sleeve cylinder 100 by a machining process, and the shear groove 120 is directly cut in the inner surface of the cylinder by the machining process, so that the shear groove 120 can improve the bonding strength between the grouting material and the connecting steel bars.
Wherein, step S2 includes:
s11, after the mechanical connection end 200 of the half grouting sleeve is shrunk in diameter, the auxiliary 600 is inserted into the cylinder of the half grouting sleeve from the grouting anchoring end 300, and then is mounted on the mechanical connection end 200, so that the main body 610 of the auxiliary 600 is attached to the mechanical connection end 200, and the extension 620 is expanded outward from the main body 610 and attached to the transition region 700.
Alternatively, the first and second electrodes may be,
s12, before the mechanical connecting end 200 of the half grouting sleeve is shrunk in diameter, the auxiliary piece 600 is installed in the mechanical connecting end 200 of the sleeve cylinder 100, and the auxiliary piece 600 is subjected to hot forging extrusion diameter reduction along with the sleeve cylinder 100 until the wall thickness formed by the mechanical connecting end 200 and the auxiliary piece 600 is uniform and consistent along the axial direction.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (10)
1. A semi-grouting sleeve is characterized by comprising a sleeve barrel body,
one end of the sleeve barrel is a grouting anchoring end, the other end of the sleeve barrel is a mechanical connecting end, the diameter of the mechanical connecting end is smaller than that of the sleeve barrel, and the sleeve barrel is manufactured in a hot forging extrusion reducing mode;
in a use state, a steel bar extends into the grouting anchoring end from the outside in the direction of pointing to the mechanical connecting end from the grouting anchoring end, a gap for containing grouting materials is formed between the steel bar and the inner wall of the sleeve barrel, and the other steel bar extends into the mechanical connecting end from the outside in the direction of pointing to the grouting anchoring end from the mechanical connecting end and is fixed on the mechanical connecting end.
2. Semi-grouting sleeve according to claim 1,
the outer surface of the sleeve barrel is provided with an annular indentation, and the inner surface of the sleeve barrel is correspondingly provided with an annular bulge.
3. Semi-grouting sleeve according to claim 2,
the annular indentation on the outer surface of the sleeve barrel body and the corresponding annular bulge on the inner surface are formed by a rolling process.
4. Semi-grouting sleeve according to claim 1,
an inner concave shear groove is formed on the inner surface of the sleeve barrel.
5. Semi-grouting sleeve according to claim 4,
the shear groove is formed by a machining process.
6. Semi-grouting sleeve according to claim 1,
and threads are arranged in the mechanical connecting end.
7. Semi-grouting sleeve according to claim 1,
install into thick liquid mouth and play thick liquid mouth on the sleeve barrel, advance thick liquid mouth with the axis of play thick liquid mouth is parallel, just advance thick liquid mouth with play thick liquid mouth all with the inner chamber intercommunication of sleeve barrel.
8. Semi-grouting sleeve according to claim 1,
an arc-shaped transition area is arranged between the mechanical connecting end and the sleeve barrel body, the mechanical connecting end points to the sleeve barrel body, and the wall thickness of the transition area is gradually increased.
9. Semi-grouting sleeve according to claim 8,
also comprises an auxiliary piece, the auxiliary piece comprises a main body part and an extension part,
the main part laminating in the inner wall of mechanical connection end, the extension is certainly the main part expands to the outside, and laminate in transition region's inner wall.
10. Semi-grouting sleeve according to claim 9,
the inner surface of the main body part is provided with threads, and the outer surface of the main body part is provided with bulges.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020476375.6U CN212104827U (en) | 2020-04-03 | 2020-04-03 | Half grout sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020476375.6U CN212104827U (en) | 2020-04-03 | 2020-04-03 | Half grout sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212104827U true CN212104827U (en) | 2020-12-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020476375.6U Active CN212104827U (en) | 2020-04-03 | 2020-04-03 | Half grout sleeve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212104827U (en) |
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2020
- 2020-04-03 CN CN202020476375.6U patent/CN212104827U/en active Active
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