Mechanical connecting piece for construction steel bars

Abstract

The utility model provides a construction reinforcement mechanical connecting piece which comprises an upper outer sleeve, a lower outer sleeve and two inner sleeves, the two sides of the upper outer sleeve and the two sides of the lower outer sleeve are fixedly connected with connecting pieces, the end of the upper outer sleeve and the end of the lower outer sleeve are in threaded connection with threaded rods, and the inner ends of the threaded rods are fixedly connected with pressing plates. The utility model has the advantages that when the steel bars are connected, the two steel bars are inserted into the two groups of contraction pieces from the two inner sleeves; and then the tightening ring is rotated, and the tightening ring pushes the contraction piece to contract to clamp the reinforcing steel bar. In the process, the inserting ring extends out of the sleeve ring, so that the distance between the two tightening rings is adjusted along with rotation of the tightening rings. Clamping lines are arranged on the inner sides of the contraction pieces and the inner sleeve and can be matched with protruding parts on the ribbed steel bars to lock the steel bars in the contraction pieces. And the tightening ring is rotated according to different sizes of steel bars, so that the steel bars are clamped by the contraction pieces, the steel bars in a certain size range can be mechanically connected, and the applicability is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of steel bar connection, in particular to a mechanical connecting piece for building steel bars. Background Art

[0002] In the construction industry, the steel bar connection methods are divided into binding connection, welding connection and mechanical connection, and the mechanical connection method has the widest application range. In addition, the mechanical connection method has fast construction speed, good force transmission performance and good stability.

[0003] For example, a mechanical connector for building steel bars with publication number CN218205247U embeds the threads on the connecting ends of two corresponding types of threaded steel bars into the fixing grooves on the inner walls of two semi-connecting sleeves at the same time. The two semi-connecting sleeves clamp the connecting ends of the two threaded steel bars, and then the two semi-connecting sleeves are placed in the fixing sleeves to clamp the connecting ends of the two threaded steel bars. Finally, the two end covers are detachably fixed to the two ends of the fixing sleeves to complete the mechanical connection of the threaded steel bars. There is no need to rotate the threaded steel bars, and the operation is simple, convenient and labor-saving. However, the size of the semi-connecting sleeves is fixed, which makes it difficult to connect steel bars of different sizes, and the applicability is low. For this reason, a mechanical connector for building steel bars is proposed for improvement. Utility Model Content

[0004] The purpose of the present invention is to solve at least one of the above technical deficiencies.

[0005] Therefore, one purpose of the present invention is to provide a mechanical connector for building steel bars to solve the problems mentioned in the background technology and overcome the deficiencies in the prior art.

[0006] In order to achieve the above-mentioned purpose, an embodiment of the utility model provides a mechanical connector for building steel bars, comprising an upper outer sleeve, a lower outer sleeve and two inner sleeves, both sides of the upper outer sleeve and the lower outer sleeve are fixedly connected with connecting plates, the ends of the upper outer sleeve and the lower outer sleeve are threadedly connected with screws, and the inner ends of the screws are fixedly connected with a pressing plate;

[0007] One end of the inner sleeve is fixedly connected with a shrinkage piece, the inner sides of the inner sleeve and the shrinkage piece are provided with snap-fitting patterns, the end of the shrinkage piece is threadedly connected with a tightening ring, the outer side of the tightening ring is fixedly connected with a rotating piece, one end of the tightening ring is fixedly connected with a fixing ring, a rotating ring is movably connected inside the fixing ring, the side surfaces of the rotating rings on the shrinkage pieces at the two ends of the inner sleeve are respectively fixedly connected with a plug-in ring and a sleeve ring, and the plug-in ring is plugged into the sleeve ring.

[0008] Preferably, any of the above schemes is that the upper outer sleeve and the lower outer sleeve both adopt a semicircular structure, and both ends of the upper outer sleeve and the lower outer sleeve are fixedly connected with protective rings.

[0009] Preferably, any of the above schemes has through holes formed on the connecting plates of the upper outer sleeve and the lower outer sleeve, and a rotating handle is fixedly connected to the outer end of the screw.

[0010] The above technical solution is adopted: the inner sleeve cooperates with its upper structure to connect steel bars of different sizes, and the upper outer sleeve and the lower outer sleeve are sleeved on the outside of the inner sleeve to protect the inner sleeve and its upper structure, so as to prevent the accidental contact of external objects from affecting the steel bar connection. The connecting piece is used to connect the upper outer sleeve and the lower outer sleeve, and a through hole is provided on it. The upper outer sleeve and the lower outer sleeve can be locked together with bolts and nuts so that they can be stably sleeved at the steel bar connection. The rotation of the screw can drive the pressure plate to move vertically, so that the pressure plate rests on the steel bar, and the friction between the pressure plate and the steel bar is used to fix the upper outer sleeve and the lower outer sleeve.

[0011] Preferably, in any of the above schemes, a plurality of shrinkage plates are provided at the end of the inner sleeve and all adopt the same arc-shaped structure.

[0012] Preferably, any of the above solutions has a thread formed on the outer side of the shrinkage piece, and the end of the shrinkage piece is fixedly connected to a limiting piece.

[0013] The above technical solution is adopted: the inner sleeve provides support for the shrinkage plate, and multiple shrinkage plates can be close to each other under the constraint of the tightening ring, so that steel bars of different sizes can be clamped. The clamping grooves provided on the inner side of the shrinkage plate and the inner sleeve can cooperate with the raised part on the ribbed steel bar to lock the steel bar in the shrinkage plate. The outer side of the shrinkage plate is provided with a thread for the tightening ring to rotate on it. The tightening ring is of fixed size, and when it rotates along the shrinkage plate, the shrinkage plates will gradually approach each other to clamp the steel bar. The limit plate at the end of the shrinkage plate can limit the tightening ring to prevent the tightening ring from detaching from the shrinkage plate.

[0014] Preferably, any of the above schemes is that two rotating plates are provided on each tightening ring and are arranged symmetrically, and an annular through hole is opened on one side of the fixing ring.

[0015] Preferably, any of the above schemes is that a clamping ring is fixedly connected to the end of the sleeve ring, and a clamping plate is fixedly connected to the end of the plug-in ring.

[0016] The above technical solution is adopted: the rotating piece can facilitate the staff to rotate the tightening ring. The fixed ring provides installation and activity space for the rotating ring, and the rotating ring provides an installation platform for the plug-in ring and the sleeve ring. When connecting the steel bars, two steel bars are plugged into two sets of shrinking pieces from two inner sleeves. Then the tightening ring is rotated, and the tightening ring pushes the shrinking piece to shrink and clamp the steel bar. In this process, the plug-in ring extends from the sleeve ring, so that the distance between the two tightening rings is adjusted as the tightening ring rotates.

[0017] Compared with the prior art, the advantages and beneficial effects of the utility model are:

[0018] 1. The mechanical connector for building steel bars is provided with an inner sleeve, a shrinking plate, a tightening ring, a fixed ring, a rotating ring, a plug-in ring and a sleeve ring. When connecting steel bars, two steel bars are plugged from two inner sleeves to two sets of shrinking plates. Then the tightening ring is rotated, and the tightening ring pushes the shrinking plate to shrink and clamp the steel bars. In this process, the plug-in ring extends from the sleeve ring, so that the distance between the two tightening rings is adjusted as the tightening ring rotates. The clamping pattern is provided on the inner side of the shrinking plate and the inner sleeve, which can cooperate with the raised part on the ribbed steel bar to lock the steel bar in the shrinking plate. The tightening ring is rotated according to different steel bar sizes so that the shrinking plate clamps the steel bar, which can mechanically connect steel bars within a certain size range and has stronger applicability.

[0019] 2. The mechanical connector of building steel bars is provided with an upper outer sleeve and a lower outer sleeve, and cooperates with a connecting piece, a screw, a pressure plate and other structures. After the steel bar is clamped by the shrinkage plate, the upper outer sleeve and the lower outer sleeve are sleeved on the outside of the inner sleeve, and the upper outer sleeve and the lower outer sleeve are fixed together by bolts, nuts and the connecting piece. The screw is turned to move the pressure plate downward, and the friction between the pressure plate and the steel bar is used to fix the upper outer sleeve and the lower outer sleeve on the steel bar, so as to protect the shrinkage plate and other structures.

[0020] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 For the utility model Figure 1 The structural diagram at A in the middle;

[0024] Figure 3 It is a schematic diagram of the structure of the upper outer sleeve and the lower outer sleeve of the utility model;

[0025] Figure 4 It is a structural schematic diagram of the inner sleeve and the shrinkage piece of the utility model.

[0026] In the figure: 1-upper outer sleeve, 2-lower outer sleeve, 3-connecting piece, 4-screw, 5-pressing plate, 6-inner sleeve, 7-shrinking piece, 8-clamping pattern, 9-tightening ring, 10-rotating piece, 11-fixed ring, 12-rotating ring, 13-plug-in ring, 14-sleeve ring. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] like Figures 1 to 4 As shown, the utility model comprises an upper outer sleeve 1, a lower outer sleeve 2 and two inner sleeves 6, both sides of the upper outer sleeve 1 and the lower outer sleeve 2 are fixedly connected with connecting pieces 3, the ends of the upper outer sleeve 1 and the lower outer sleeve 2 are threadedly connected with screws 4, and the inner ends of the screws 4 are fixedly connected with a pressing plate 5;

[0030] One end of the inner sleeve 6 is fixedly connected to a shrinkage piece 7, and the inner sides of the inner sleeve 6 and the shrinkage piece 7 are provided with snap-fitting patterns 8. The end of the shrinkage piece 7 is threadedly connected to a tightening ring 9, and a rotating piece 10 is fixedly connected to the outer side of the tightening ring 9. One end of the tightening ring 9 is fixedly connected to a fixing ring 11, and a rotating ring 12 is movably connected inside the fixing ring 11. The sides of the rotating ring 12 on the shrinkage pieces 7 at the two ends of the inner sleeve 6 are respectively fixedly connected with a plug-in ring 13 and a sleeve ring 14, and the plug-in ring 13 is plugged into the sleeve ring 14.

[0031] Embodiment 1: The upper outer sleeve 1 and the lower outer sleeve 2 both adopt a semicircular structure, and both ends of the upper outer sleeve 1 and the lower outer sleeve 2 are fixedly connected with protective rings. Through holes are provided on the connecting plates 3 of the upper outer sleeve 1 and the lower outer sleeve 2, and a turning handle is fixedly connected to the outer end of the screw 4. The inner sleeve 6 cooperates with its upper structure to connect steel bars of different sizes. The upper outer sleeve 1 and the lower outer sleeve 2 are sleeved on the outer side of the inner sleeve 6 to protect the inner sleeve 6 and its upper structure, and prevent the external objects from accidentally touching and affecting the steel bar connection. The connecting plate 3 is used to connect the upper outer sleeve 1 and the lower outer sleeve 2. Through holes are provided on it, and the upper outer sleeve 1 and the lower outer sleeve 2 can be locked together with bolts and nuts to be stably sleeved at the steel bar connection. The rotation of the screw 4 can drive the pressure plate 5 to move vertically, so that the pressure plate 5 rests on the steel bar, and the friction between the pressure plate 5 and the steel bar is used to fix the upper outer sleeve 1 and the lower outer sleeve 2.

[0032] Embodiment 2: Several shrinkage plates 7 are provided at the end of the inner sleeve 6 and all adopt the same arc structure. The outer side of the shrinkage plate 7 is provided with a thread, and the end of the shrinkage plate 7 is fixedly connected with a limiting plate. The inner sleeve 6 provides support for the shrinkage plate 7, and multiple shrinkage plates 7 can be close to each other under the constraint of the tightening ring 9, so that steel bars of different sizes can be clamped. The snap-fitting pattern 8 provided on the inner side of the shrinkage plate 7 and the inner sleeve 6 can cooperate with the raised part on the ribbed steel bar to lock the steel bar in the shrinkage plate 7. The outer side of the shrinkage plate 7 is provided with a thread, and the tightening ring 9 can rotate thereon. The tightening ring 9 is of fixed size, and when it rotates along the shrinkage plate 7, the shrinkage plates 7 will gradually approach each other to clamp the steel bar. The limiting plate at the end of the shrinkage plate 7 can limit the tightening ring 9 to prevent the tightening ring 9 from detaching from the shrinkage plate 7.

[0033] Embodiment 3: Two rotating pieces 10 are provided on each tightening ring 9 and are arranged symmetrically, and an annular through hole is opened on one side of the fixed ring 11. A clamping ring is fixedly connected to the end of the sleeve ring 14, and a clamping plate is fixedly connected to the end of the plug-in ring 13. The rotating piece 10 can facilitate the staff to rotate the tightening ring 9. The fixed ring 11 provides installation and activity space for the rotating ring 12, and the rotating ring 12 provides an installation platform for the plug-in ring 13 and the sleeve ring 14. When connecting the steel bars, two steel bars are plugged into the two sets of shrinkage pieces 7 from the two inner sleeves 6. Then the tightening ring 9 is rotated, and the tightening ring 9 pushes the shrinkage piece 7 to contract and clamp the steel bars. In this process, the plug-in ring 13 extends from the sleeve ring 14, so that the distance between the two tightening rings 9 is adjusted as the tightening ring 9 rotates.

[0034] The working principle of the utility model is as follows:

[0035] S1, insert two steel bars from two inner sleeves 6 to two sets of shrinkage plates 7;

[0036] S2, rotate the tightening ring 9, and the tightening ring 9 pushes the shrinking plate 7 to shrink and clamp the steel bar. In this process, the plug ring 13 extends from the sleeve ring 14, so that the distance between the two tightening rings 9 is adjusted as the tightening ring 9 rotates;

[0037] S3, put the upper outer sleeve 1 and the lower outer sleeve 2 on the outside of the inner sleeve 6, and fix the upper outer sleeve 1 and the lower outer sleeve 2 together by bolts, nuts and connecting pieces 3. Turn the screw 4 to move the pressing plate 5 downward, and use the friction between the pressing plate 5 and the steel bar to fix the upper outer sleeve 1 and the lower outer sleeve 2 on the steel bar, so as to protect the shrinkage piece 7 and other structures.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] 1. The mechanical connector for building steel bars is provided with an inner sleeve 6, a shrinking piece 7, a tightening ring 9, a fixed ring 11, a rotating ring 12, a plug-in ring 13 and a sleeve ring 14. When connecting steel bars, two steel bars are plugged into two sets of shrinking pieces 7 from two inner sleeves 6. Then the tightening ring 9 is rotated, and the tightening ring 9 pushes the shrinking piece 7 to shrink and clamp the steel bars. In this process, the plug-in ring 13 extends from the sleeve ring 14, so that the distance between the two tightening rings 9 is adjusted as the tightening ring 9 rotates. The clamping pattern 8 is provided on the inner side of the shrinking piece 7 and the inner sleeve 6 to cooperate with the raised part on the ribbed steel bar to lock the steel bar in the shrinking piece 7. The tightening ring 9 is rotated according to different steel bar sizes so that the shrinking piece 7 clamps the steel bar, and steel bars within a certain size range can be mechanically connected, which has stronger applicability.

[0040] 2. The mechanical connector for building steel bars is provided with an upper outer sleeve 1 and a lower outer sleeve 2, and cooperates with structures such as a connecting piece 3, a screw rod 4, and a pressing plate 5. After the steel bars are clamped by a shrinking plate 7, the upper outer sleeve 1 and the lower outer sleeve 2 are sleeved on the outside of the inner sleeve 6, and the upper outer sleeve 1 and the lower outer sleeve 2 are fixed together by bolts and nuts in cooperation with the connecting piece 3. The screw rod 4 is rotated to move the pressing plate 5 downward, and the friction between the pressing plate 5 and the steel bars is used to fix the upper outer sleeve 1 and the lower outer sleeve 2 on the steel bars, thereby protecting the shrinking plate 7 and other structures.

Claims

1. A mechanical connector for building steel bars, comprising an upper outer sleeve (1), a lower outer sleeve (2) and two inner sleeves (6); characterized in that: Both sides of the upper outer sleeve (1) and the lower outer sleeve (2) are fixedly connected with connecting plates (3), the ends of the upper outer sleeve (1) and the lower outer sleeve (2) are threadedly connected with screw rods (4), and the inner ends of the screw rods (4) are fixedly connected with a pressing plate (5); One end of the inner sleeve (6) is fixedly connected to a shrinking plate (7), the inner sides of the inner sleeve (6) and the shrinking plate (7) are both provided with snap-fitting grooves (8), the end of the shrinking plate (7) is threadedly connected to a tightening ring (9), the outer side of the tightening ring (9) is fixedly connected to a rotating plate (10), one end of the tightening ring (9) is fixedly connected to a fixing ring (11), a rotating ring (12) is movably connected inside the fixing ring (11), and the side surfaces of the rotating ring (12) on the shrinking plates (7) at the two ends of the inner sleeve (6) are respectively fixedly connected to a plug-in ring (13) and a sleeve ring (14), and the plug-in ring (13) is plugged into the sleeve ring (14).

2. A mechanical connector for building steel bars as claimed in claim 1, characterized in that: The upper outer sleeve (1) and the lower outer sleeve (2) both adopt a semicircular structure, and both ends of the upper outer sleeve (1) and the lower outer sleeve (2) are fixedly connected with protective rings.

3. A mechanical connector for building steel bars as claimed in claim 2, characterized in that: Through holes are provided on the connecting plates (3) of the upper outer sleeve (1) and the lower outer sleeve (2), and a rotating handle is fixedly connected to the outer end of the screw rod (4).

4. A mechanical connector for building steel bars as claimed in claim 3, characterized in that: A plurality of shrinkage sheets (7) are provided at the end of the inner sleeve (6) and all adopt the same arc-shaped structure.

5. A mechanical connector for building steel bars as claimed in claim 4, characterized in that: The outer side of the shrinkage piece (7) is provided with a thread, and the end of the shrinkage piece (7) is fixedly connected to a limiting piece.

6. A mechanical connector for building steel bars as claimed in claim 5, characterized in that: Two rotating plates (10) are provided on each tightening ring (9) and are arranged symmetrically, and an annular through hole is provided on one side of the fixing ring (11).

7. A mechanical connector for building steel bars as claimed in claim 6, characterized in that: The end of the sleeve ring (14) is fixedly connected to a clamping ring, and the end of the plug-in ring (13) is fixedly connected to a clamping plate.

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