CN112962866A - Expansion connecting sleeve group for reinforcing steel bar end and using method thereof - Google Patents
Expansion connecting sleeve group for reinforcing steel bar end and using method thereof Download PDFInfo
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- CN112962866A CN112962866A CN202110174765.7A CN202110174765A CN112962866A CN 112962866 A CN112962866 A CN 112962866A CN 202110174765 A CN202110174765 A CN 202110174765A CN 112962866 A CN112962866 A CN 112962866A
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- steel bar
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- 229910001294 Reinforcing steel Inorganic materials 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 192
- 239000010959 steel Substances 0.000 claims abstract description 192
- 230000003014 reinforcing effect Effects 0.000 claims description 54
- 238000003466 welding Methods 0.000 claims description 36
- 238000001125 extrusion Methods 0.000 claims description 21
- WSNMPAVSZJSIMT-UHFFFAOYSA-N COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 Chemical compound COc1c(C)c2COC(=O)c2c(O)c1CC(O)C1(C)CCC(=O)O1 WSNMPAVSZJSIMT-UHFFFAOYSA-N 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 13
- 230000002787 reinforcement Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 14
- 230000006835 compression Effects 0.000 abstract description 7
- 238000007906 compression Methods 0.000 abstract description 7
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/161—Protective caps for the ends of reinforcing bars
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/162—Connectors or means for connecting parts for reinforcements
- E04C5/163—Connectors or means for connecting parts for reinforcements the reinforcements running in one single direction
- E04C5/165—Coaxial connection by means of sleeves
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C5/00—Reinforcing elements, e.g. for concrete; Auxiliary elements therefor
- E04C5/16—Auxiliary parts for reinforcements, e.g. connectors, spacers, stirrups
- E04C5/18—Spacers of metal or substantially of metal
Abstract
The invention discloses an expansion connecting sleeve group for a steel bar end and a using method thereof. The expansion connecting sleeve group for the end of the reinforcing steel bar has the advantages of simple integral structure, good use convenience, simple and convenient operation, unlimited use and high connection fastness, can meet the use requirements of high tensile strength and compression strength, and basically covers the requirements of various use forms of construction on site; most of the components are fixed in a threaded connection mode, so that the operation is convenient and fast, the connection is firm, the components can be quickly recycled or disconnected, and meanwhile, the adjustment redundancy is excellent, and the application prospect is great.
Description
Technical Field
The invention belongs to the technical field of building construction equipment, and relates to an expansion connecting sleeve group for a steel bar end and a using method thereof.
Background
The reinforcing steel bars are the necessary tensile and compressive structural members for modern buildings. In industrial production, the size of the steel bar is usually predetermined, and in actual construction, a plurality of steel bars are usually required to be connected or the steel bar and the building component are required to be connected. In addition, often still need add thick in order to guarantee that this portion of reinforcing bar is fixed or spacing by the cyclic annular steel bar structure that the ligature overlap joint formed to the tip of reinforcing bar, adopt welded form to add thick or use mound to press equipment to carry out the tip mound at present and press, its consuming time power.
The firmness of the connection between the steel bar and other parts directly influences the quality of the project. At present, the commonly used connection modes between the steel bars include three types of binding lap joint, welding connection and mechanical connection. The binding and lapping process is simple, the construction speed is high, the construction quality is stable, but the material consumption is the most, and the force transmission performance is the worst, so that the use requirement of high tensile strength and compression resistance is difficult to meet; the welding connection process is simple and has lower cost, but the welding connection process has higher technical requirements on welding personnel, consumes longer time, wastes labor, has unstable welding quality and is not suitable for vertical connection; at present, the parts for mechanical connection of the steel bars are mostly threaded sleeves, but the sleeves need to be threaded at the tail ends of the steel bars in advance, so that not only is labor wasted, but also the strength of the tail ends is reduced, so that the number of joints in the same cross section is limited in the construction specification, in addition, the steel bars and the concrete members are mainly connected in an embedded mode, and longer time is needed for waiting for solidification of the steel bars. For the connection of reinforcing bar and steel member, generally adopt welded connection's form at present, although welded connection simple process and cost are lower, its technical requirement to welding personnel is higher, consuming time longer, take a lot of work, welding quality is unstable and be unsuitable for vertical connection.
Therefore, the development of the reinforcing steel bar connecting sleeve group which has good use convenience and unlimited use, can meet the use requirement of high tensile and compression resistance and can meet various application forms of field construction has practical significance.
Disclosure of Invention
The invention aims to overcome the defects of inconvenient use, limited use condition and poor connection strength of a steel bar connecting piece in the prior art, and provides a steel bar connecting sleeve group which is good in use convenience, unlimited in use, capable of meeting the use requirement of high tensile and compression resistance and capable of meeting various application forms of field construction.
In order to achieve the purpose, the invention provides the following technical scheme:
an expansion connecting sleeve group for a steel bar end comprises an expansion connecting sleeve of the steel bar and the steel bar, an expansion end anchor of the steel bar end, a welding sleeve for connecting the steel bar and a building component and a threaded connecting sleeve for connecting the steel bar and the building component;
the expansion connecting sleeve of the steel bars comprises a sleeve A and a sleeve B;
one side of the sleeve A is provided with a blind hole I for connecting a steel bar A, and the other side of the sleeve A is provided with a blind hole II internally provided with an internal thread structure I;
one side of the sleeve B is provided with a blind hole III for connecting a steel bar B, and the other side of the sleeve B is provided with an external thread structure I matched with the internal thread structure I;
one side of the sleeve A is connected with the steel bar A, the other side of the sleeve A is connected with one side of the sleeve B through thread fit, and the other side of the sleeve B is connected with the steel bar B, so that the connection of the steel bar A and the steel bar B is realized;
the steel bar tail end expanding end anchor comprises a sleeve C, an expanding sleeve fixing piece and an end anchor screw;
one side of the sleeve C is provided with a blind hole IV for connecting the reinforcing steel bar C, and the other side of the sleeve C is provided with a blind hole V internally provided with an internal thread structure IV;
an external thread structure III matched with the internal thread structure IV is arranged outside the end anchor screw;
the expansion sleeve is axially provided with a through hole I, and the end anchor screw penetrates through the through hole I and then is sleeved on the expansion sleeve;
the expansion external member fixing piece is axially provided with a through hole II, an internal thread structure V matched with the external thread structure III is arranged in the through hole II, and the expansion external member fixing piece is in threaded connection with the end anchor screw to fix the expansion external member and limit the expansion external member between the expansion external member fixing piece and the nut end of the end anchor screw;
the welding kit for connecting the steel bar and the building component comprises a sleeve D and a welding joint;
one side of the sleeve D is provided with a blind hole VI for connecting a steel bar D, and the other side of the sleeve D is provided with a thread structure X;
a thread structure XI matched with the thread structure X is arranged on one side of the welding joint, and the outer diameter of the other side of the welding joint is continuously increased along the direction close to the outer side (the side is a welding end, namely the welding section is larger than one side of the welding joint);
one side of the sleeve D is connected with a steel bar D, the other side of the sleeve D is connected with one side of the welded joint through thread fit, and the other side of the welded joint is welded with the building component A, so that the steel bar D is connected with the building component A;
the threaded connection kit for connecting the reinforcing steel bar and the building component comprises a sleeve E and a screw;
one side of the sleeve E is provided with a blind hole VII for connecting a reinforcing steel bar E, and the other side of the sleeve E is provided with a blind hole VIII internally provided with an internal thread structure VI;
the screw is externally provided with an external thread structure IV matched with the internal thread structure VI, one end of the screw is connected with the building component B, and the other end of the screw is fixed with the sleeve E connected with the reinforcing steel bar E through thread fit so as to realize the connection of the building component B and the reinforcing steel bar E.
The invention provides an expansion connecting sleeve group to realize the connection between reinforcing steel bars, between reinforcing steel bars and building components and the use requirement of the expansion of the tail ends of the reinforcing steel bars, has simple integral structure, good use convenience, simple and convenient operation, unlimited use and high connection fastness, can meet the use requirement of high tensile and compression resistance, basically covers the requirements of various use forms of building site construction, and has great application prospect.
The expansion connecting sleeve piece of the steel bar and the steel bar in the expansion connecting sleeve group, the expansion end anchor at the tail end of the steel bar and the threaded connecting sleeve piece for connecting the steel bar and the building component are all fixed in a threaded connection mode, so that the operation is convenient and fast, the connection is firm, and the connection can be quickly recovered or released. The size of the expansion kit of the steel bar tail end expansion end anchor can be selected according to needs, and different use requirements can be met.
As a preferred technical scheme:
the extended connecting sleeve group for the steel bar end is characterized in that the steel bar A and the steel bar B have the same or different sizes; the sizes of the blind holes I and the blind holes III are respectively matched with the sizes of the reinforcing steel bars A and the reinforcing steel bars B, and the reinforcing steel bars with different sizes can be connected through the reinforcing steel bar and reinforcing steel bar expansion connecting sleeve, so that the effect of reducing the diameter of the reinforcing steel bars can be realized;
the projection area of the expansion kit in the axial direction completely covers the projection areas of the end anchor screw and the sleeve C in the axial direction, namely the size of the expansion kit is far larger than the radial size of a nut of the end anchor screw and the radial size of the sleeve C;
the end anchor screw is an all-metal screw, and the end anchor screw is not limited to the all-metal screw, but a plastic screw or a semi-metal semi-plastic screw can also be applied to the invention;
the building component A is a steel component, and other metal components can also be suitable;
the building member B is a steel member or a concrete member.
The expansion connecting sleeve group for the end of the steel bar further comprises a threaded rod and a connecting sleeve;
an external thread structure II matched with the internal thread structure I is arranged outside the threaded rod;
a through hole III with an internal thread structure II is formed in the axial direction of the connecting sleeve, and the internal thread structure II is matched with the external thread structure II;
the sleeve A is connected with one side of the threaded rod through thread fit, and the other side of the threaded rod is connected with the sleeve B through the connecting sleeve. Can extend the connection section through threaded rod and connecting sleeve and can be in order to satisfy the connection of the longer two reinforcing bars of interval, sleeve A, sleeve B, threaded rod and connecting sleeve can constitute the better reinforcing bar extension of a set of suitability and connect the external member simultaneously.
The expansion connecting sleeve group for the end of the reinforcing steel bar further comprises a positioning ring A and a positioning ring B which have the same structure;
a through hole IV is formed in the positioning ring A in the axial direction, and an internal thread structure III matched with the external thread structure II is arranged in the through hole IV;
in the direction from the sleeve A to the sleeve B, the positioning ring A, the positioning ring B and the connecting sleeve are sequentially sleeved on the threaded rod;
the positioning ring A fixes the position of the sleeve A, and the positioning ring B fixes the position of the connecting sleeve; the positioning ring A and the positioning ring B are actually equivalent to self-locking fittings, and the addition of the positioning ring A and the positioning ring B can ensure that the threaded connection cannot be untied even if the reinforcing steel bars (the reinforcing steel bar A and the reinforcing steel bar B) on two sides rotate, namely the connection reliability of the expansion connection kit is ensured; the positioning ring has the advantages that the positioning function is not limited to positioning, and the part of the positioning ring, which is close to the sleeve (the positioning ring A is close to the sleeve A, and the positioning ring B is close to the connecting sleeve), is screwed up to be the safe twisting times;
the connecting sleeve is simultaneously connected with the threaded rod and the sleeve B through thread matching.
The extended connecting sleeve group for the reinforcing steel bar end comprises a thread structure X, a thread structure XI and a connecting sleeve, wherein the thread structure X is an external thread structure, the thread structure XI is an internal thread structure, and the specific structures of the thread structure X and the thread structure XI can be set by a person skilled in the art according to actual requirements, and only one feasible technical scheme is given here;
the welding joint comprises a column section and a platform section which are connected with each other (the platform section is a welding connection structure, and the end with the larger outer diameter is a welding end face);
the column section is connected with the sleeve D, and the platform section is welded with the building component A;
a blind hole IX is formed in the axial direction of the column section, and a thread structure XI is arranged in the blind hole IX;
the column section and the platform section are respectively of a coaxial cylindrical structure and a circular truncated cone-shaped structure;
the minimum outer diameter of the platform section is equal to the outer diameter of the column section, and the joint of the platform section and the column section is the end face where the minimum outer diameter of the platform section is located. The column section and the platform section can also be similar structures such as a square column and a quadrangular frustum pyramid, and only one feasible technical scheme is given here, and a person skilled in the art can reasonably choose the column section and the platform section based on the technical idea given in the invention.
The expansion connecting sleeve group for the steel bar end further comprises a positioning ring C;
a through hole V is formed in the axial direction of the positioning ring C, and an internal thread structure VII matched with the external thread structure IV is arranged in the through hole V;
after the screw rod end of the screw penetrates through a through hole VI reserved on the building component B, the screw is fixed with the building component B by using a positioning ring C, and the screw is fixed with the sleeve E in a threaded manner, so that the connection between the reinforcing steel bar E and the building component B is completed;
the use of the positioning ring C to fix the screw to the building element B means that the building element B is confined between the positioning ring C and the nut end of the screw. The protection scope of the invention is not limited to this, the connection between the steel bar E and the building component B can be completed by using similar means without using the positioning ring C, of course, the use of the positioning ring C can reduce the operation difficulty, if the positioning ring C is not used, the torque should be controlled to avoid damaging the building component B (especially the component made of concrete) when screwing up the screw, of course, the positioning ring C is not recommended to be used, the function of the positioning ring C in the invention is not limited to positioning, and the part of the positioning ring C close to the sleeve E is screwed tightly, which is just the safe number of times of torsion.
The expansion connecting sleeve group for the reinforcing steel bar end comprises a screw cap part and a screw rod part;
an external thread structure IV is arranged outside the screw rod part;
the screw cap part is made of metal or plastic, and the screw rod part is made of metal or plastic;
the end face of the screw cap part made of plastic, which is far away from the side of the screw rod part, is attached to the surface of the building component B made of concrete and then is connected with the building component B made of concrete through a steel nail (the fixing is finished in a manner similar to a steel nail hook). Although the firmness of fixation is poor, the overall operation convenience is good, and the steel nails are disassembled after pouring is completed to realize the threaded connection of the steel bars. Screws with a nut portion of plastic material may be used for wood molding. The all-metal screw herein may be provided in a form including a magnet nut portion and a screw portion, and the magnet nut portion may be used for a steel mold.
The blind hole I, the blind hole III, the blind hole IV, the blind hole VI and the blind hole VII have the same structure and comprise a cylindrical hole and a conical hole which are coaxial and connected with each other;
the cylinder hole is closer to the outside than the circular cone hole, and the internal diameter of the conical cone hole is the same with the internal diameter in cylinder hole and the internal diameter in circular cone hole constantly reduces to zero along keeping away from outside direction with the internal diameter in the link in circular cone hole and cylinder hole.
The extension connecting sleeve group for the reinforcing steel bar end comprises a blind hole I, a blind hole II, a blind hole IV, a blind hole V and a blind hole VII, wherein the blind holes I, IV and VIII are coaxial; the blind hole III is coaxial with the external thread structure I;
reinforcing bar A and sleeve A, reinforcing bar B and sleeve B, reinforcing bar C and sleeve C, reinforcing bar D and sleeve D, reinforcing bar E and sleeve E accomplish fixing each other through the extrusion.
The invention also provides a use method of the expansion connecting sleeve group for the steel bar end, the fixed connection between the steel bars is realized by using the expansion connecting sleeve of the steel bars and the steel bars, the expansion of the steel bar end is realized by using the expansion end anchor of the steel bar end, the welding of the steel bars and the steel building component is realized by using the welding sleeve for connecting the steel bars and the building component, and the threaded connection between the steel bars and the building component is realized by using the threaded connecting sleeve for connecting the steel bars and the building component.
Specifically, taking the use of the expansion connecting kit of the steel bars and the steel bars with various structures and more use forms as an example, the use method is as follows:
firstly, a sleeve A + a sleeve B;
(1) inserting the steel bar A into the blind hole I of the sleeve A and completing the fixation of the steel bar A and the sleeve A through extrusion, and inserting the steel bar B into the blind hole III of the sleeve B and completing the fixation of the steel bar B and the sleeve B through extrusion;
(2) in the external thread structure I screw in of sleeve B blind hole II's on the sleeve A internal thread structure I, accomplish sleeve A and sleeve B's fixed connection through the screw-thread fit, realize reinforcing bar A and reinforcing bar B's being connected promptly.
Two, sleeve A + sleeve B + threaded rod + connecting sleeve:
(1) inserting the steel bar A into the blind hole I of the sleeve A and completing the fixation of the steel bar A and the sleeve A through extrusion, and inserting the steel bar B into the blind hole III of the sleeve B and completing the fixation of the steel bar B and the sleeve B through extrusion;
(2) on the internal thread structure I with blind hole II on the threaded rod screw in sleeve A, with connecting sleeve screw in threaded rod again, in the external thread structure I screw in connecting sleeve with sleeve B at last, connecting sleeve passes through screw-thread fit simultaneously and is connected with threaded rod and sleeve B this moment, realizes being connected of reinforcing bar A and reinforcing bar B promptly.
Thirdly, sleeve A + sleeve B + threaded rod + connecting sleeve + locating ring A + locating ring B:
(1) inserting the steel bar A into the blind hole I of the sleeve A and completing the fixation of the steel bar A and the sleeve A through extrusion, and inserting the steel bar B into the blind hole III of the sleeve B and completing the fixation of the steel bar B and the sleeve B through extrusion;
(2) on the internal thread structure I with blind hole II on threaded rod screw in sleeve A, fix holding ring A screw in threaded rod to sleeve A, again with holding ring B and connecting sleeve screw in threaded rod in proper order, at last with sleeve B's external thread structure I screw in connecting sleeve, adjustment holding ring B's position is fixed connecting sleeve, and connecting sleeve passes through screw-thread fit simultaneously and is connected with threaded rod and sleeve B this moment, realizes reinforcing bar A and reinforcing bar B's being connected promptly.
Has the advantages that:
(1) the expansion connecting sleeve group for the end of the reinforcing steel bar has the advantages of simple integral structure, good use convenience, simple and convenient operation, unlimited use and high connection fastness, can meet the use requirements of high tensile strength and compression strength, and basically covers the requirements of various use forms of construction on site;
(2) the expansion connecting sleeve group for the end of the reinforcing steel bar is mostly fixed in a threaded connection mode, is convenient and fast to operate and firm in connection, can be quickly recycled or disconnected, has excellent adjustment redundancy, and has great application prospect.
Drawings
Fig. 1 and 2 are schematic views of a reinforcing bar and an expanded connection kit of reinforcing bars in example 1 before and after being connected to each other, respectively;
FIGS. 3 and 4 are schematic views of an enlarged end anchor at the end of a reinforcing bar when not fully assembled and when fully assembled, respectively;
FIGS. 5 and 6 are schematic views and exploded schematic views, respectively, of a welded sleeve for connecting a reinforcing bar to a building element;
FIG. 7 is a schematic view of a weld joint;
fig. 8, 9 and 10 are a perspective view, a front view and an assembly view, respectively, of a screw coupling kit for coupling reinforcing bars with a construction member according to embodiment 1;
FIG. 11 is a perspective view of FIG. 2;
fig. 12 and 13 are schematic views of the reinforcing bars and the expanded connection suites of the reinforcing bars in example 2 before and after being connected with each other, respectively;
fig. 14 is an exploded view of the steel bar-to-steel bar expansion joint set of embodiment 3;
fig. 15 is a schematic view of the expanded connection kit for connecting reinforcing bars according to embodiment 3;
fig. 16 is a schematic view of the expanded connection kit for connecting reinforcing bars according to embodiment 4;
FIG. 17 is a schematic view showing the completion of the assembly of the screw coupling kit for connecting reinforcing bars to a construction member according to example 6;
FIG. 18 is a schematic view of a screw coupling kit for coupling reinforcing bars with a construction member according to example 7;
the steel bar-type expansion joint comprises 1-a steel bar A, 2-a sleeve A, 3-a positioning ring A, 4-a positioning ring B, 5-a threaded rod, 6-a connecting sleeve, 7-a sleeve B, 71-an external thread structure I, 8-a steel bar B, 9-a cylindrical hole, 10-a conical hole, 11-a steel bar C, 12-a sleeve C, 13-an expansion sleeve fixing part, 14-an expansion sleeve, 15-an end anchor screw, 16-a steel bar D, 17-a sleeve D, 18-a welding joint, 181-a column section, 182-a platform section, 19-a building component A, 20-a steel bar E, 21-a sleeve E, 22-a screw, 23-a positioning ring C and 24-a building component B.
Detailed Description
The following further describes the embodiments of the present invention with reference to the attached drawings.
Example 1
An expansion connecting sleeve group for a steel bar end comprises an expansion connecting sleeve of the steel bar and the steel bar, an expansion end anchor of the steel bar end, a welding sleeve for connecting the steel bar and a building component and a threaded connecting sleeve for connecting the steel bar and the building component;
the expansion connection kit of the steel bars and the steel bars is shown in figures 1 and 2 and comprises a sleeve A2 and a sleeve B7;
one side of the sleeve A2 is provided with a blind hole I for connecting the steel bar A1, and the other side is provided with a blind hole II which is coaxial with the blind hole I and is internally provided with an internal thread structure I;
one side of the sleeve B7 is provided with a blind hole III for connecting a steel bar B2 with the same size as the steel bar A, and the other side of the sleeve B7 is provided with an external thread structure I71 which is coaxial with the blind hole III and matched with the internal thread structure I;
one side of the sleeve A2 is connected with the steel bar A1, the other side of the sleeve A2 is connected with one side of the sleeve B7 through thread fit, and the other side of the sleeve B7 is connected with the steel bar B8, so that the connection of the steel bar A1 and the steel bar B8 is realized;
the steel bar end enlarged end anchor is shown in fig. 3 and 4 and comprises a sleeve C12, an enlarged sleeve 14, an enlarged sleeve fixing member 13 and an end anchor screw 15 (all-metal screw);
a blind hole IV (the steel bar C11 and the sleeve C12 are fixed through extrusion) for connecting the steel bar C11 is formed in one side of the sleeve C12, and a blind hole V which is internally provided with an internal thread structure IV and is coaxial with the blind hole IV is formed in the other side of the sleeve C12;
an external thread structure III matched with the internal thread structure IV is arranged outside the end anchor screw 15;
a through hole I is formed in the axial direction of the expansion sleeve member 14, the expansion sleeve member 14 is sleeved on the end anchor screw 15 after the end anchor screw 15 penetrates through the through hole I, and the projection area of the expansion sleeve member 14 in the axial direction completely covers the projection areas of the end anchor screw 15 and the sleeve C12 in the axial direction;
a through hole II is formed in the axial direction of the expansion external member fixing piece 13, an internal thread structure V matched with the external thread structure III is arranged in the through hole II, and the expansion external member fixing piece 13 is in threaded connection with the end anchor screw 15 to fix the expansion external member 14 and limit the expansion external member between the nut ends of the expansion external member fixing piece 13 and the end anchor screw 15;
a welding kit for connecting a reinforcing bar to a building element is shown in fig. 5 and 6, and comprises a sleeve D17 and a welded joint 18;
one side of the sleeve D17 is provided with a blind hole VI for connecting a steel bar D16 (the steel bar D16 and the sleeve D17 are fixed by extrusion), and the other side is provided with a thread structure X (an external thread structure);
a thread structure XI (internal thread structure) matched with the thread structure X is arranged on one side of the welding joint 18, the outer diameter of the other side is continuously increased along the direction close to the outer side, specifically as shown in fig. 7, the welding joint comprises a column section 181 and a platform section 182 which are connected with each other, the column section 181 and the platform section 182 are respectively a coaxial cylindrical structure and a circular truncated cone-shaped structure, the minimum outer diameter of the platform section 182 is equal to the outer diameter of the column section 181, the joint of the platform section 182 and the column section 181 is the end face where the minimum outer diameter of the platform section 182 is located, the column section 181 is connected with a sleeve D17, the platform section 182 is welded with a building component a 19, a blind hole IX is formed in the axial direction of the column section 181, and the thread structure;
one side of the sleeve D17 is connected with a steel bar D16, the other side of the sleeve D17 is connected with one side of a welding joint 18 through thread fit, and the other side (namely the end with the larger outer diameter of the platform section) of the welding joint 18 is welded with a building component A19, so that the connection of the steel bar D16 and the building component A (steel component) 19 is realized;
the threaded connection kit for connecting the reinforcing steel bar with the building component comprises a sleeve E21, a positioning ring C23 and a screw 22 (all-metal screw);
one side of the sleeve E21 is provided with a blind hole VII for connecting a reinforcing steel bar E20 (the reinforcing steel bar E20 and the sleeve E21 are fixed through extrusion), and the other side is provided with a blind hole VIII which is internally provided with an internal thread structure VI and is coaxial with the blind hole VII;
a through hole V is formed in the positioning ring C23 in the axial direction, and an internal thread structure VII matched with the external thread structure IV is arranged in the through hole V;
an external thread structure IV matched with the internal thread structure VI is arranged outside the screw 22, after the screw end of the screw 22 passes through a through hole VI reserved on a building component B (steel component or concrete component) 24, the screw 22 is fixed with the building component B24 by using a positioning ring C23 (the building component B24 is limited between the positioning ring C23 and the nut end of the screw 22), and then the screw 22 is fixed with a sleeve E21 in a threaded manner, namely, the connection between the steel bar E20 and the building component B24 is completed (one end of the screw 22 is connected with the building component B24, and the other end of the screw 22 is fixed with the sleeve E21 connected with the steel bar E20 in a threaded manner;
the blind holes I, III, IV, VI and VII are identical in structure, taking blind hole III as an example, it includes a cylindrical hole 9 and a conical hole 10 which are coaxial and connected to each other as shown in fig. 11;
the cylindrical hole 9 is closer to the outer side than the conical hole 10, the inner diameter of the connecting end of the conical hole 10 and the cylindrical hole 9 is the same as that of the cylindrical hole 9, and the inner diameter of the conical hole 10 is continuously reduced to zero along the direction far away from the outer side;
reinforcing bar A1 and sleeve A2, reinforcing bar B8 and sleeve B7, reinforcing bar C11 and sleeve C12, reinforcing bar D16 and sleeve D17, reinforcing bar E20 and sleeve E21 are fixed through the extrusion.
The use method of the expansion connecting sleeve group for the end of the steel bar realizes the fixed connection between the steel bar and the steel bar by using the expansion connecting sleeve of the steel bar and the steel bar, realizes the expansion of the end of the steel bar by using the expansion end anchor of the end of the steel bar, realizes the welding of the steel bar and a steel building component by using the welding sleeve for connecting the steel bar and the building component, and realizes the threaded connection of the steel bar and the building component by using the threaded connecting sleeve for connecting the steel bar and the building component;
the use method of the expansion connection kit for the steel bars is as follows:
(1) inserting the steel bar A1 into the blind hole I of the sleeve A2 and completing the fixation of the steel bar A1 and the sleeve A2 through extrusion, inserting the steel bar B8 into the blind hole III of the sleeve B7 and completing the fixation of the steel bar B8 and the sleeve B7 through extrusion;
(2) in screwing the external thread structure I71 of the sleeve B7 into the internal thread structure I of the blind hole II on the sleeve A2, the sleeve A2 and the sleeve B7 are fixedly connected through thread matching, namely the connection between the steel bar A1 and the steel bar B8 is realized.
Example 2
An expansion connecting sleeve set for a steel bar end is basically the same as that in embodiment 1, except that the sizes of the steel bars A and B (the sizes of the blind holes I and III) in the expansion connecting sleeve set of the steel bars are different, and as shown in fig. 12 and 13, the use method is the same as that in embodiment 1.
Example 3
An expanded connecting sleeve group for a reinforcing steel bar end is basically the same as that in embodiment 1, except that the expanded connecting sleeve group of the reinforcing steel bar is different from that of the reinforcing steel bar;
the steel bar and steel bar expansion connecting kit is shown in fig. 14 and 15, and comprises a sleeve A2, a threaded rod 5, a connecting sleeve 6, a sleeve B7, a positioning ring A3 and a positioning ring B4 which are of the same structure;
one side of the sleeve A2 is provided with a blind hole I for connecting the steel bar A1, and the other side is provided with a blind hole II which is coaxial with the blind hole I and is internally provided with an internal thread structure I;
an external thread structure II matched with the internal thread structure I is arranged outside the threaded rod 2;
a through hole III with an internal thread structure II is formed in the axial direction of the connecting sleeve 6, and the internal thread structure II is matched with the external thread structure II;
a through hole IV is axially formed in the positioning ring A3 and the positioning ring B4, and an internal thread structure III matched with the external thread structure II is arranged in the through hole IV;
in the direction from the sleeve A2 to the sleeve B7, a positioning ring A3, a positioning ring B4 and a connecting sleeve 6 are sequentially sleeved on the threaded rod 5, the positioning ring A3 fixes the position of the sleeve A2, and the positioning ring B4 fixes the position of the connecting sleeve 6;
the sleeve A2 is connected with one side of the threaded rod 5 through thread fit, and the other side of the threaded rod 5 is connected with the sleeve B7 through the connecting sleeve 6 (the connecting sleeve 6 is simultaneously connected with the threaded rod 5 and the sleeve B7 through thread fit);
one side of the sleeve B7 is provided with a blind hole III for connecting a steel bar B2 with the same size as the steel bar A, and the other side of the sleeve B7 is provided with an external thread structure I71 which is coaxial with the blind hole III and matched with the internal thread structure I;
the blind holes I and III have the same structure and comprise cylindrical holes and conical holes which are coaxial and connected with each other;
the cylindrical hole is closer to the outer side than the conical hole, the inner diameter of the connecting end of the conical hole and the cylindrical hole is the same as that of the cylindrical hole, the inner diameter of the conical hole is continuously reduced along the direction far away from the outer side until the inner diameter is reduced to zero, and the steel bar A1 and the sleeve A2 as well as the steel bar B8 and the sleeve B7 are fixed through extrusion;
one side connecting reinforcement A1 of sleeve A2, the opposite side passes through screw-thread fit and is connected with threaded rod 5, and one side of threaded rod 5 is connected with sleeve B7 one side through (being connected with threaded rod 5 and sleeve B7 simultaneously) connecting sleeve 6 again, and sleeve B7's opposite side is connected with reinforcing bar B8, and then realizes reinforcing bar A1 and reinforcing bar B8's being connected.
The use method of the expansion connecting kit of the steel bars comprises the following specific steps:
(1) inserting the steel bar A1 into the blind hole I of the sleeve A2 and completing the fixation of the steel bar A1 and the sleeve A2 through extrusion, inserting the steel bar B8 into the blind hole III of the sleeve B7 and completing the fixation of the steel bar B8 and the sleeve B7 through extrusion;
(2) on the internal thread structure I with blind hole II on the threaded rod 5 screw in sleeve A2, fix holding ring A3 screw in threaded rod to sleeve A2, again with holding ring B4 and connecting sleeve 6 screw in threaded rod 5 in proper order, at last with in the external thread structure I71 screw in connecting sleeve 6 of sleeve B7, the position of adjustment holding ring B4 is fixed connecting sleeve 6, connecting sleeve 6 passes through the screw-thread fit and is connected with threaded rod 5 and sleeve B7 simultaneously this moment, realize reinforcing bar A1 and reinforcing bar B8's being connected promptly.
Example 4
An expansion joint sleeve set for the end of a steel bar, as shown in fig. 16, is basically the same as the embodiment 3, except that the expansion joint sleeve set of the steel bar and the steel bar does not have a positioning ring A and a positioning ring B.
The use method of the expansion connecting sleeve group for the end of the steel bar specifically comprises the following steps:
(1) inserting the steel bar A into the blind hole I of the sleeve A and completing the fixation of the steel bar A and the sleeve A through extrusion, and inserting the steel bar B into the blind hole III of the sleeve B and completing the fixation of the steel bar B and the sleeve B through extrusion;
(2) on the internal thread structure I with blind hole II on the threaded rod screw in sleeve A, with connecting sleeve screw in threaded rod again, in the external thread structure I screw in connecting sleeve with sleeve B at last, connecting sleeve passes through screw-thread fit simultaneously and is connected with threaded rod and sleeve B this moment, realizes being connected of reinforcing bar A and reinforcing bar B promptly.
Example 5
An expanded connecting sleeve set for the end of a steel bar is basically the same as the embodiment 3, except that only one positioning ring is arranged in the expanded connecting sleeve set of the steel bar and the steel bar.
The use method of the expansion connecting sleeve group for the end of the steel bar specifically comprises the following steps:
(1) inserting the steel bar A into the blind hole I of the sleeve A and completing the fixation of the steel bar A and the sleeve A through extrusion, and inserting the steel bar B into the blind hole III of the sleeve B and completing the fixation of the steel bar B and the sleeve B through extrusion;
(2) on the internal thread structure I with blind hole II on threaded rod screw in sleeve A, with holding ring screw in threaded rod, with connecting sleeve screw in threaded rod again, with sleeve B's external thread structure I screw in connecting sleeve at last, the position of adjustment holding ring can be fixed connecting sleeve or sleeve A, and connecting sleeve passes through screw-thread fit and is connected with threaded rod and sleeve B simultaneously this moment, realizes being connected of reinforcing bar A and reinforcing bar B promptly.
Example 6
An expansion joint set for the end of a steel bar, substantially the same as embodiment 1, except that the threaded joint set for connecting the steel bar to the building element is shown in fig. 17, lacking a retaining ring C23, although care should be taken to control the torque to avoid damaging the building element B when tightening the screw without using the retaining ring C.
Example 7
An expanding connection sleeve group for a reinforcing bar end, which is substantially the same as embodiment 1, except that a screw connection sleeve for connecting a reinforcing bar with a building member is shown in fig. 18, and comprises a sleeve E21 and a screw 22;
the screw 22 includes a plastic nut portion and a screw portion (a metal screw portion or a plastic screw portion);
an external thread structure IV matched with the internal thread structure VII is arranged outside the screw rod part, and the end surface of the plastic screw cap part far away from the screw rod part side is attached to the surface of a building component B (concrete component) made of concrete and then is connected with the building component B made of concrete through a steel nail.
Proved by verification, the expansion connecting sleeve group for the reinforcement end is simple in integral structure, good in use convenience, simple and convenient to operate, unlimited in use and high in connection fastness, can meet the use requirements of high tensile and compression resistance, and basically covers the requirements of various use forms of construction site construction; most of the components are fixed in a threaded connection mode, so that the operation is convenient and fast, the connection is firm, the components can be quickly recycled or disconnected, and meanwhile, the adjustment redundancy is excellent, and the application prospect is great.
Although specific embodiments of the present invention have been described above, it will be appreciated by those skilled in the art that these embodiments are merely illustrative and various changes or modifications may be made without departing from the principles and spirit of the invention.
Claims (10)
1. An expansion connecting sleeve group for a steel bar end is characterized by comprising an expansion connecting sleeve of the steel bar and the steel bar, an expansion end anchor of the steel bar end, a welding sleeve for connecting the steel bar and a building component and a threaded connecting sleeve for connecting the steel bar and the building component;
the expansion connecting sleeve of the steel bars comprises a sleeve A and a sleeve B;
one side of the sleeve A is provided with a blind hole I for connecting a steel bar A, and the other side of the sleeve A is provided with a blind hole II internally provided with an internal thread structure I;
one side of the sleeve B is provided with a blind hole III for connecting a steel bar B, and the other side of the sleeve B is provided with an external thread structure I matched with the internal thread structure I;
one side of the sleeve A is connected with the steel bar A, the other side of the sleeve A is connected with one side of the sleeve B through thread fit, and the other side of the sleeve B is connected with the steel bar B, so that the connection of the steel bar A and the steel bar B is realized;
the steel bar tail end expanding end anchor comprises a sleeve C, an expanding sleeve fixing piece and an end anchor screw;
one side of the sleeve C is provided with a blind hole IV for connecting the reinforcing steel bar C, and the other side of the sleeve C is provided with a blind hole V internally provided with an internal thread structure IV;
an external thread structure III matched with the internal thread structure IV is arranged outside the end anchor screw;
the expansion sleeve is axially provided with a through hole I, and the end anchor screw penetrates through the through hole I and then is sleeved on the expansion sleeve;
the expansion external member fixing piece is axially provided with a through hole II, an internal thread structure V matched with the external thread structure III is arranged in the through hole II, and the expansion external member fixing piece is in threaded connection with the end anchor screw to fix the expansion external member and limit the expansion external member between the expansion external member fixing piece and the nut end of the end anchor screw;
the welding kit for connecting the steel bar and the building component comprises a sleeve D and a welding joint;
one side of the sleeve D is provided with a blind hole VI for connecting a steel bar D, and the other side of the sleeve D is provided with a thread structure X;
a thread structure XI matched with the thread structure X is arranged on one side of the welding joint, and the outer diameter of the other side of the welding joint is continuously increased along the direction close to the outer side;
one side of the sleeve D is connected with a steel bar D, the other side of the sleeve D is connected with one side of the welded joint through thread fit, and the other side of the welded joint is welded with the building component A, so that the steel bar D is connected with the building component A;
the threaded connection kit for connecting the reinforcing steel bar and the building component comprises a sleeve E and a screw;
one side of the sleeve E is provided with a blind hole VII for connecting a reinforcing steel bar E, and the other side of the sleeve E is provided with a blind hole VIII internally provided with an internal thread structure VI;
the screw is externally provided with an external thread structure IV matched with the internal thread structure VI, one end of the screw is connected with the building component B, and the other end of the screw is fixed with the sleeve E connected with the reinforcing steel bar E through thread fit so as to realize the connection of the building component B and the reinforcing steel bar E.
2. An expansion joint sleeve set for reinforcing bar ends according to claim 1, wherein the sizes of the reinforcing bar a and the reinforcing bar B are the same or different;
the projection area of the expansion kit in the axial direction completely covers the projection areas of the end anchor screw and the sleeve C in the axial direction;
the end anchor screw is an all-metal screw;
the building component A is a steel component;
the building member B is a steel member or a concrete member.
3. An expansion joint sleeve group for a reinforcement bar end according to claim 1, further comprising a threaded rod and a joint sleeve;
an external thread structure II matched with the internal thread structure I is arranged outside the threaded rod;
a through hole III with an internal thread structure II is formed in the axial direction of the connecting sleeve, and the internal thread structure II is matched with the external thread structure II;
the sleeve A is connected with one side of the threaded rod through thread fit, and the other side of the threaded rod is connected with the sleeve B through the connecting sleeve.
4. An expansion connection sleeve group for a reinforcing steel bar end according to claim 3, characterized by further comprising a positioning ring A and a positioning ring B with the same structure;
a through hole IV is formed in the positioning ring A in the axial direction, and an internal thread structure III matched with the external thread structure II is arranged in the through hole IV;
in the direction from the sleeve A to the sleeve B, the positioning ring A, the positioning ring B and the connecting sleeve are sequentially sleeved on the threaded rod;
the positioning ring A fixes the position of the sleeve A, and the positioning ring B fixes the position of the connecting sleeve;
the connecting sleeve is simultaneously connected with the threaded rod and the sleeve B through thread matching.
5. An expansion joint sleeve set for a reinforcing bar end according to claim 1, wherein the thread structure X is an external thread structure, and the thread structure XI is an internal thread structure;
the welding joint comprises a column section and a platform section which are connected with each other;
the column section is connected with the sleeve D, and the platform section is welded with the building component A;
a blind hole IX is formed in the axial direction of the column section, and a thread structure XI is arranged in the blind hole IX;
the column section and the platform section are respectively of a coaxial cylindrical structure and a circular truncated cone-shaped structure;
the minimum outer diameter of the platform section is equal to the outer diameter of the column section, and the joint of the platform section and the column section is the end face where the minimum outer diameter of the platform section is located.
6. An expansion joint sleeve set for reinforcing bar ends according to claim 1, further comprising a positioning ring C;
a through hole V is formed in the axial direction of the positioning ring C, and an internal thread structure VII matched with the external thread structure IV is arranged in the through hole V;
after the screw rod end of the screw penetrates through a through hole VI reserved on the building component B, the screw is fixed with the building component B by using a positioning ring C, and the screw is fixed with the sleeve E in a threaded manner, so that the connection between the reinforcing steel bar E and the building component B is completed;
the use of the positioning ring C to fix the screw to the building element B means that the building element B is confined between the positioning ring C and the nut end of the screw.
7. An expansion joint sleeve set for a rebar end according to claim 6, wherein the screw comprises a nut portion and a screw portion;
an external thread structure IV is arranged outside the screw rod part;
the screw cap part is made of metal or plastic, and the screw rod part is made of metal or plastic;
the end face of the screw cap part made of plastic, which is far away from the side of the screw rod part, is attached to the surface of the building component B made of concrete and then is connected with the building component B made of concrete through a steel nail.
8. An expansion connection sleeve group for a reinforcing steel bar end according to claim 1, wherein the blind holes I, III, IV, VI and VII are identical in structure and comprise a cylindrical hole and a conical hole which are coaxial and connected with each other;
the cylinder hole is closer to the outside than the circular cone hole, and the internal diameter of the conical cone hole is the same with the internal diameter in cylinder hole and the internal diameter in circular cone hole constantly reduces to zero along keeping away from outside direction with the internal diameter in the link in circular cone hole and cylinder hole.
9. An expansion connection sleeve group for a reinforcing steel bar end according to claim 1, wherein the blind holes I and II, IV and V, VII and VIII are coaxial; the blind hole III is coaxial with the external thread structure I;
reinforcing bar A and sleeve A, reinforcing bar B and sleeve B, reinforcing bar C and sleeve C, reinforcing bar D and sleeve D, reinforcing bar E and sleeve E pass through the extrusion fixed.
10. The method as claimed in any one of claims 1 to 9, wherein the steel bar and steel bar expansion connection sleeve assembly is used to fixedly connect the steel bar and steel bar, the steel bar end expansion anchor is used to expand the steel bar end, the welding sleeve assembly is used to weld the steel bar and the building component, and the screw connection sleeve assembly is used to connect the steel bar and the building component to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202110174765.7A CN112962866A (en) | 2021-02-08 | 2021-02-08 | Expansion connecting sleeve group for reinforcing steel bar end and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110174765.7A CN112962866A (en) | 2021-02-08 | 2021-02-08 | Expansion connecting sleeve group for reinforcing steel bar end and using method thereof |
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| CN112962866A true CN112962866A (en) | 2021-06-15 |
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| CN209799172U (en) * | 2019-01-24 | 2019-12-17 | 富实特建材科技(广东)有限公司 | Fixing structure of reinforcing steel bar |
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| CN202125012U (en) * | 2011-03-15 | 2012-01-25 | 润弘精密工程事业股份有限公司 | Reinforcing bar end expanding device |
| CN204112606U (en) * | 2014-09-24 | 2015-01-21 | 杭州力程建筑五金有限公司 | The branch sleeve of steel concrete supporting |
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Address after: 215699 No.9 Fuxin Road, North District, Zhangjiagang Economic and Technological Development Zone (yangshe town), Suzhou City, Jiangsu Province Applicant after: PEC building materials (China) Co.,Ltd. Address before: 215699 No.9 Fuxin Road, North District, Zhangjiagang Economic and Technological Development Zone (yangshe town), Zhangjiagang City, Suzhou City, Jiangsu Province Applicant before: Peck construction accessories (Zhangjiagang) Co.,Ltd. |
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Application publication date: 20210615 |