CN209780044U - Reinforcing steel bar connecting sleeve - Google Patents
Reinforcing steel bar connecting sleeve Download PDFInfo
- Publication number
- CN209780044U CN209780044U CN201920117230.4U CN201920117230U CN209780044U CN 209780044 U CN209780044 U CN 209780044U CN 201920117230 U CN201920117230 U CN 201920117230U CN 209780044 U CN209780044 U CN 209780044U
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- nut
- steel bar
- sleeve
- counter bore
- reinforcing
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Abstract
The utility model provides a steel bar connecting external member, belonging to the field of building construction, which comprises a first nut, a second nut and a sleeve part; the first nut and the second nut have the same outer contour; one end of the threaded hole of the first nut is provided with a first counter bore; one end of the threaded hole of the second nut is provided with a second counter bore; an accommodating groove for accommodating the first nut and the second nut is formed in the middle of the sleeve part, and the inner wall of the accommodating groove can be tightly attached to the outer contours of the first nut and the second nut; the accommodating groove is provided with a first end and a second end in the axial direction, the first end is provided with a first convex ring corresponding to the first counter bore, and the second end is provided with a second convex ring corresponding to the second counter bore. The steel bar connecting sleeve can prevent the steel bar wire mouth from rusting; the tooth of the screw thread at the end part of the reinforcing steel bar can be prevented from being damaged; only one worker is needed for operation, and the operation is simple; when the connector is connected on site, the connector can be connected only by rotating the connector by a small length, and the efficiency is obviously improved.
Description
Technical Field
the utility model relates to a construction field particularly, relates to a steel bar connection external member.
Background
the connecting mode of reinforcing bars has a plurality of, and the common three types of binding overlap joint, reinforcing bar welding and reinforcing bar mechanical connection that divide into in the construction. And the grout anchor and the grouting sleeve adopted by the current assembly type building are connected.
the binding and lapping are mainly suitable for the connection of small-sized steel bars. The welding connection can be divided into flash butt welding, gas pressure welding, vertical steel electroslag pressure welding, horizontal steel narrow gap welding and the like. Mechanical connections can be divided into cold-pressed sleeves, tapered threads, stripped and rolled straight threads, upset and turned straight threads, and the like.
The ligature overlap joint is only simple with two reinforcing bar overlap joints ligature together, can cause at great eccentric force, is unfavorable for the structure atress, influences the interval of reinforcing bar. And the connecting device is only used for connecting non-main stressed steel bars with smaller diameters, and cannot meet the requirements of most cases.
The welding connection is that the joints of two steel bars are welded into a whole by an electric welding machine. Welding connection is also easy to have eccentricity, welding quality, current and the technology of an operator have great influence, and poor welding quality and brittle fracture can be caused if the joint is not polished in place or is secondarily polluted. The C, Mn and Si contents of III-grade steel bars are high, which affects the welding quality, especially
When electroslag pressure welding is selected, the inspection qualification rate of the joint is generally low. The welding connection needs special work, the current is large, safety accidents are easy to happen, and the requirements on weather and sites are severe. The construction efficiency is lower, and the stress performance after connection is not as good as that of mechanical connection.
the most widely applied on site in mechanical connection is a connection mode that a threaded screw head processed by a reinforcing steel bar end is meshed with a threaded connection sleeve to form a whole, and the mechanical connection is suitable for all concrete structural engineering with earthquake proofing and non-earthquake proofing. The deformed steel bar has high precision, good tooth shape and smooth tooth surface; the connection quality is stable; the joint has no damage through 200 ten thousand fatigue tests of the international civil engineering association and has excellent fatigue resistance; the low-temperature resistance is outstanding, and the joint can still be connected with the wood with the same strength under the low-temperature test of minus 40 ℃; the application range is basically not limited, the device is suitable for connecting the reinforcing steel bars at any position and direction, and can also be used in occasions where the bent reinforcing steel bars, the fixed reinforcing steel bars and the reinforcing cage cannot rotate; the method is suitable for environmental protection requirements: the construction is free of open fire, is safe and reliable especially under the construction conditions of flammability, explosiveness, high altitude and the like, and can be constructed in all weather; the construction period can be shortened, the engineering quality can be improved, and the energy consumption can be reduced.
In summary, the mechanical connection of the reinforcing steel bars has many advantages: the quality of the joint is stable and reliable; the steel bar is not influenced by the chemical composition of the steel bar; the influence of human factors is small, and the operation is simple and convenient; the construction speed is high, and the influence of weather conditions is avoided; no pollution, no fire hazard, safe construction and the like; in the connection of the large-diameter steel bars, the mechanical connection method of the steel bars has wide development prospect.
Although the existing mechanical connecting sleeve has great advantages, the existing mechanical connecting sleeve has a plurality of problems in actual construction on site.
At present, the problem that straight thread muffjoint technique exists: 1. rusting a steel bar opening: the wire openings at the ends of the steel bars are exposed for a long time and are easy to rust; 2. the reinforcing steel bar opening is damaged: the reinforcing steel bars are transported for many times, and the screw thread teeth are easy to damage in the transportation process; 3. protective sleeves are generally not available in the field: generally, a protective sleeve is proposed to protect a screw opening in a construction scheme, but the protective sleeve is difficult to wear on a steel bar in site construction because of too much trouble; 4. the operation of workers is laborious: if the screw port rusts or is damaged, when sleeve connection is carried out on site, operators need to work hard, even the connection quality is affected, and the stress performance is reduced. 5. Two workers are required to operate: the existing straight thread sleeve connection construction generally needs two workers to be matched, when the sleeve connection is carried out, a steel bar tends to rotate, one side of the steel bar or the sleeve needs to be controlled not to rotate to carry out connection, and sometimes field conditions are not allowed, so that the operation is difficult. 6. The construction efficiency is low: when the connection is carried out on site, the whole screw opening length of the sleeve needs to be connected in a rotating mode for a long time, and in addition, the labor is wasted, and the construction efficiency is low. 7. The wrapping lengths of the sleeves are inconsistent: the internal thread of the existing straight thread standard type sleeve is in one direction from top to bottom, so that the lengths of two reinforcing steel bar end heads wrapped by the sleeve are different when the sleeve is connected on site, and the stress is further influenced. 8. The middle part of the sleeve is hollow: even in many times, because the silk mouth of one end reinforcing bar is impaired or rusts, the workman makes very big strength all be difficult to rotatory the screwing up again, this just causes two reinforcing bar ends and does not draw close, appears that the sleeve middle part is hollow, and mechanical interlock length is not enough, and then influences the atress.
SUMMERY OF THE UTILITY MODEL
The utility model provides a steel bar connection external member aims at solving the above-mentioned problem that steel bar connection external member exists among the prior art.
The utility model discloses a realize like this:
A steel bar connecting kit comprises a first nut, a second nut and a sleeve part;
The first nut and the second nut have the same outer contour;
One end of the threaded hole of the first nut is provided with a first counter bore;
one end of the threaded hole of the second nut is provided with a second counter bore;
A containing groove for containing the first nut and the second nut is formed in the middle of the sleeve part, and the inner wall of the containing groove can be tightly attached to the outer contours of the first nut and the second nut;
The accommodating groove is provided with a first end and a second end in the axial direction, the first end is provided with a first convex ring corresponding to the first counter bore, and the second end is provided with a second convex ring corresponding to the second counter bore.
in an embodiment of the present invention, the sleeve portion includes a first half cylinder and a second half cylinder symmetrically disposed, and the first half cylinder and the second half cylinder are assembled to form the sleeve portion.
in an embodiment of the present invention, the first nut and the second nut are outer hexagonal nuts of the same model.
in an embodiment of the present invention, the sum of the axial length of the first nut and the axial length of the second nut is a basic length, the axial length of the accommodating groove is greater than the basic length, and the axial length of the accommodating groove is less than 1.5 times the basic length.
The utility model has the advantages that: the reinforcing steel bar connecting external member provided by the utility model can well prevent the reinforcing steel bar wire mouth from rusting; in the process of transporting the reinforcing steel bars, the screw thread teeth at the end parts of the reinforcing steel bars can be prevented from being damaged; the protective sleeve does not need to be worn additionally, so that the cost and the working procedures are reduced; only one worker is needed for operation, the operation is simple, and no effort is required; when in on-site connection, the connector can be connected only by rotating a small length, so that the efficiency is obviously improved; the engagement length of the reinforcing steel bar wire openings at two ends and the connector can be ensured to be consistent; can ensure that the ends of the reinforcing steel bars are completely closed, and can effectively avoid the hollow phenomenon of the straight thread sleeve.
Drawings
in order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
fig. 1 is a schematic structural view of two reinforcing bars suitable for the reinforcing bar connecting kit according to the embodiment of the present invention;
Fig. 2 is a schematic structural view of a first nut and a second nut of a reinforcing bar connecting kit according to an embodiment of the present invention when the first nut and the second nut are connected to a reinforcing bar;
Fig. 3 is a schematic structural view of the reinforcing bar connecting kit according to the embodiment of the present invention, when the sleeve portion is not sleeved on the nut;
fig. 4 is a schematic structural view of a sleeve portion of a reinforcing bar connecting kit according to an embodiment of the present invention fitted over a nut;
fig. 5 is a schematic view of an internal structure of a reinforcing bar connecting kit according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of a reinforcing bar connecting sleeve according to an embodiment of the present invention before rotation of a sleeve portion;
fig. 7 is a cross-sectional view of a reinforcing bar connecting kit according to an embodiment of the present invention after a sleeve portion is rotated.
icon: 100-a first nut; 200-a second nut; 300-a sleeve portion; 310-a first half-cylinder; 330-second half-cylinder; 110-a first counterbore; 210-a second counterbore; 350-a containing groove; 351-a first end; 353-a second end; 355-a first collar; 357-second collar; 010-first reinforcing steel; 030-second rebar.
Detailed Description
to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. 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. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the 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.
In the description of the present invention, it is to be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and do not indicate or imply that the equipment or elements 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.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless otherwise expressly stated or limited, the first feature may comprise both the first and second features directly contacting each other, and also may comprise the first and second features not being directly contacting each other but being in contact with each other by means of further features between them. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.
Example one
Referring to fig. 3 and 4, the present embodiment provides a reinforcing bar connecting kit, which includes a first nut 100, a second nut 200, and a sleeve portion 300.
The ends of the steel bars are threaded first, and then the two steel wires are sleeved with the first nut 100 and the second nut 200 respectively. The first nut 100 and the second nut 200 have the same outer contour, one end of the threaded hole of the first nut 100 is provided with a first counter bore 110, and one end of the threaded hole of the second nut 200 is provided with a second counter bore 210;
a receiving groove 350 for receiving the first nut 100 and the second nut 200 is formed in the middle of the sleeve portion 300, and the inner wall of the receiving groove 350 can be tightly attached to the outer contours of the first nut 100 and the second nut 200;
Referring to fig. 5, 6 and 7, the receiving groove 350 has a first end 351 and a second end 353 in an axial direction, the first end 351 is provided with a first protruding ring 355 corresponding to the first counterbore 110, and the second end 353 is provided with a second protruding ring 357 corresponding to the second counterbore 210.
The first nut 100 and the second nut 200 are arranged oppositely, when the split sleeve part 300 is sleeved on the outer sides of the first nut 100 and the second nut 200 to rotate, the first nut 100 and the second nut 200 can be relatively far away, so that two sections of reinforcing steel bars are relatively close to each other, and after a convex ring in the sleeve part 300 is clamped in a counter bore of the nut, the split sleeve part 300 is fixedly connected through the integrated nut.
The screw openings of the reinforcing steel bars can be protected through the sleeve portion 300 in a sleeved mode, and rusting of the screw openings is avoided.
To facilitate the nesting of the sleeve portion 300 outside the first nut 100 and the second nut 200, the sleeve portion 300 is divided into a first half cylinder 310 and a second half cylinder 330. The first half cylinder 310 and the second half cylinder 330 are symmetrically disposed. The first half cylinder 310 is provided with a first half groove therein, the second half cylinder 330 is provided with a second half groove therein, and the first half groove and the second half groove form a receiving groove 350 for receiving the first nut 100 and the second nut 200 after being assembled.
In other embodiments, the number of the sleeves may be three, four or other numbers, as long as the sleeves are conveniently arranged outside the first nut 100 and the second nut 200 through the splicing sleeves.
Specifically, since the rotation of the first and second nuts 100 and 200 needs to be achieved by the rotation of the sleeve portion 300, the outer contours of the first and second nuts 100 and 200 need to be non-circular. In the present embodiment, the first nut 100 and the second nut 200 are both outer hexagonal nuts and have the same size. Correspondingly, the inner wall of the receiving groove 350 of the sleeve portion 300 has an edge corresponding to the outer hexagon nut, so that the inner wall of the receiving groove 350 is attached to the outer wall of the outer hexagon nut, and the sleeve portion 300 can drive the first nut 100 and the second nut 200 to rotate synchronously when rotating.
To facilitate the rotation of the sleeve portion 300, the outer surface of the sleeve portion 300 may be designed as a rough surface, or the outer profile of the sleeve portion 300 may be non-circular to form a force-bearing surface. In the present embodiment, the outer wall of the sleeve portion 300 is formed in a cylindrical shape in order to adapt to the shape of the reinforcing bars, but the outer wall of the sleeve portion 300 is roughened to facilitate driving.
The sum of the axial length of the first nut 100 and the axial length of the second nut 200 is set as a basic length, the axial length of the accommodating groove 350 is greater than the basic length, and the axial length of the accommodating groove 350 is smaller than 1.5 times of the basic length, so that the rotation amount of the sleeve portion 300 can be reduced, and the connection of two reinforcing steel bars can be realized. If the axial length of the receiving groove 350 is designed to be excessively long, the movement distance of the first and second nuts 100 and 200 is increased, resulting in an increase in the workload.
Through the utility model provides a steel bar connection external member can be after connecting two reinforcing bars, and the end of two reinforcing bars is hugged closely and is drawn close to, and can not lead to the silk mouth to destroy because of receiving the dislocation that extruded axial force made reinforcing bar and first nut 100, second nut 200 to take place.
The reinforcing steel bar connecting external member provided by the utility model can well prevent the reinforcing steel bar wire mouth from rusting; in the process of transporting the reinforcing steel bars, the screw thread teeth at the end parts of the reinforcing steel bars can be prevented from being damaged; the protective sleeve does not need to be worn additionally, so that the cost and the working procedures are reduced; only one worker is needed for operation, the operation is simple, and no effort is required; when in on-site connection, the connector can be connected only by rotating a small length, so that the efficiency is obviously improved; the engagement length of the reinforcing steel bar wire openings at two ends and the connector can be ensured to be consistent; can ensure that the ends of the reinforcing steel bars are completely closed, and can effectively avoid the hollow phenomenon of the straight thread sleeve.
Example two
the embodiment provides a steel bar connecting method, which connects two steel bars by using the steel bar connecting kit in the first embodiment, and comprises the following steps:
Referring to fig. 1, a first thread is cut at the connection end of a first steel bar 010, a second thread is cut at the connection end of a second steel bar 030, and the first thread and the second thread are oppositely arranged to form two opposite threads;
Referring to fig. 2, a first nut 100 is sleeved into a first steel bar 010 to be in threaded connection with a first thread, a first counterbore 110 is arranged away from a second steel bar 030, a second nut 200 is sleeved into the second steel bar 030 to be in threaded connection with a second thread, and a second counterbore 210 is arranged away from the first steel bar 010;
referring to fig. 3, the first nut 100 is tightly attached to the second nut 200, and the depth of the threaded connection between the first nut 100 and the second nut 200 is adjusted to control the total length of the first nut 100 and the second nut 200;
The joint of the first nut 100 and the second nut 200 is a joint line, and the axially intermediate position of the receiving groove 350 of the sleeve portion 300 is aligned with the joint line.
The joint of the first nut 100 and the second nut 200 is a joint line, and the axially intermediate position of the receiving groove 350 of the sleeve portion 300 is aligned with the joint line. Referring to fig. 4, 5 and 6, the first half cylinder 310 and the second half cylinder 330 of the sleeve portion 300 are sleeved outside the first nut 100 and the second nut 200, the first steel bar 010 and the second steel bar 030 are circumferentially fixed, and the sleeve portion 300 is rotated to drive the first nut 100 and the second nut 200 to rotate, so that the first nut 100 and the second nut 200 are relatively far away.
In the case of the prior alignment, friction between the nut and the inner wall of the receiving groove 350 of the sleeve portion 300 can be reduced, but even if the prior alignment is not performed, the final alignment is still achieved by automatic misalignment, and the first nut 100 and the second nut 200 come into contact with each other toward the end of the receiving groove 350.
referring to FIG. 7, the sleeve portion 300 continues to be rotated until the first collar 355 snaps into the first counterbore 110 and the second collar 357 snaps into the second counterbore 210. Then, a sealing waterproof agent is filled between the two ends of the sleeve portion 300 and the gaps between the first reinforcing steel bar 010 and the second reinforcing steel bar 030.
The steel bar connecting method provided by the utility model can well avoid the rusting of the steel bar wire opening; in the process of transporting the reinforcing steel bars, the screw thread teeth at the end parts of the reinforcing steel bars can be prevented from being damaged; the protective sleeve does not need to be worn additionally, so that the cost and the working procedures are reduced; only one worker is needed for operation, the operation is simple, and no effort is required; when in on-site connection, the connector can be connected only by rotating a small length, so that the efficiency is obviously improved; the engagement length of the reinforcing steel bar wire openings at two ends and the connector can be ensured to be consistent; can ensure that the ends of the reinforcing steel bars are completely closed, and can effectively avoid the hollow phenomenon of the straight thread sleeve.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A steel bar connecting kit is characterized by comprising a first nut, a second nut and a sleeve part;
The first nut and the second nut have the same outer contour;
One end of the threaded hole of the first nut is provided with a first counter bore;
one end of the threaded hole of the second nut is provided with a second counter bore;
A containing groove for containing the first nut and the second nut is formed in the middle of the sleeve part, and the inner wall of the containing groove can be tightly attached to the outer contours of the first nut and the second nut;
the accommodating groove is provided with a first end and a second end in the axial direction, the first end is provided with a first convex ring corresponding to the first counter bore, and the second end is provided with a second convex ring corresponding to the second counter bore.
2. The rebar junction kit of claim 1, wherein the sleeve portion comprises first and second symmetrically arranged half-barrels that are split to form the sleeve portion.
3. A rebar junction kit as claimed in claim 1, wherein the first and second nuts are outer hex nuts of the same type.
4. The rebar junction kit of claim 1, wherein a sum of an axial length of the first nut and an axial length of the second nut is a base length, an axial length of the receiving slot is greater than the base length, and an axial length of the receiving slot is less than 1.5 times the base length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920117230.4U CN209780044U (en) | 2019-01-23 | 2019-01-23 | Reinforcing steel bar connecting sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920117230.4U CN209780044U (en) | 2019-01-23 | 2019-01-23 | Reinforcing steel bar connecting sleeve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209780044U true CN209780044U (en) | 2019-12-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920117230.4U Active CN209780044U (en) | 2019-01-23 | 2019-01-23 | Reinforcing steel bar connecting sleeve |
Country Status (1)
| Country | Link |
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| CN (1) | CN209780044U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629767A (en) * | 2019-01-23 | 2019-04-16 | 中国五冶集团有限公司 | A kind of reinforced bar jointing sleeve part and connecting method for reinforcing bars |
| CN113211378A (en) * | 2021-05-07 | 2021-08-06 | 广东鸿特精密技术（台山）有限公司 | Stud fast-assembling anchor clamps |
-
2019
- 2019-01-23 CN CN201920117230.4U patent/CN209780044U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109629767A (en) * | 2019-01-23 | 2019-04-16 | 中国五冶集团有限公司 | A kind of reinforced bar jointing sleeve part and connecting method for reinforcing bars |
| CN113211378A (en) * | 2021-05-07 | 2021-08-06 | 广东鸿特精密技术（台山）有限公司 | Stud fast-assembling anchor clamps |
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