Steel bar connecting assembly

Abstract

The steel bar connecting assembly comprises a first outer sleeve, a second outer sleeve and an inner sleeve. A plurality of through grooves are evenly formed in the wall of the inner sleeve, the two ends of each groove are connected through a connecting strip, the two ends of the inner sleeve are sleeved with the first outer sleeve and the second outer sleeve respectively, and steel bars in the inner sleeve are fixed by oppositely extruding the inner sleeve through the first outer sleeve and the second outer sleeve. The reinforcing steel bar connecting assembly has the advantages that the reinforcing steel bar connecting assembly extrudes the inner sleeve through the outer sleeve, reinforcing steel bars can be connected conveniently in a labor-saving mode without rotation, and the reinforcing steel bar connecting assembly is easy to carry.

Description

Technical Field

[0001] The utility model relates to a device used for connecting steel bars in a building structure. Background Art

[0002] The mechanical connection forms of steel bars in existing building structures mainly include: cold extrusion connection and threaded connection.

[0003] Cold extrusion connection uses a steel casing with high ductility and moderate strength. By extruding the outer circle of the steel casing, the steel casing undergoes plastic deformation, and the inner hole of the steel casing tightly grips the ribbed steel bars, thereby achieving the connection of two ribbed steel bars.

[0004] Threaded connection includes tapered thread connection, upset straight thread connection and rolled straight thread connection. The two steel bars to be connected are processed by special equipment, and steel wire heads with corresponding threads are made at the ends of the two steel bars. Then, the two steel bars are connected by a connecting sleeve with corresponding internal threads to achieve steel bar connection. When connecting, the connecting sleeve needs to be screwed into one steel wire head first, and then the other steel bar is screwed into the sleeve and tightened to connect the two steel bars and transmit force. During the connection process, at least one steel bar must rotate and move axially. Therefore, the existing steel bar connection method is only suitable for single steel bar connection.

[0005] With the development of the construction industry and the continuous improvement of construction technology, steel bar component construction is gradually adopted in construction, that is, before the steel bar connection construction, multiple steel bars are made into an integral steel mesh and steel cage, and then the steel bar components are connected as a whole. In this kind of steel bar component connection construction, the steel bar can only move axially, cannot rotate, and cannot move locally. Therefore, the overall connection of steel bar components cannot be achieved using the existing steel bar connection method. For example, the prefabricated building technology is being vigorously promoted. Since the exposed steel bars of the components cannot rotate, the existing steel bar mechanical connection technology cannot achieve steel bar connection. The steel bar connection between the components in the prefabricated building can only be carried out by grouting sleeves. The grouting sleeves are expensive, the construction process is cumbersome and complicated, the quality of the grouting construction directly affects the quality of the project, and the quality of the steel bar connection is difficult to guarantee. Summary of the invention

[0006] The technical problem to be solved by the utility model is to overcome the above-mentioned deficiencies of the prior art and provide a steel bar connection assembly, so that the steel bar connection assembly can connect steel bars without rotating, and the steel bar connection assembly is easy to carry and convenient to install.

[0007] The technical solution adopted by the utility model to solve the above problems is:

[0008] A steel bar connection assembly, characterized in that it includes a first outer sleeve, a second outer sleeve, and an inner sleeve; a plurality of through grooves are evenly arranged on the wall of the inner sleeve, and the two ends of the grooves are respectively connected by connecting strips; the first outer sleeve and the second outer sleeve are respectively sleeved on the two ends of the inner sleeve, and the steel bars in the inner sleeve are fixed by squeezing the inner sleeve toward each other through the first outer sleeve and the second outer sleeve.

[0009] Preferably, stepped cylinders are arranged on the inner wall of the first outer sleeve, and adjacent cylinders are connected by frustums; the second outer sleeve is identical to the first outer sleeve, and stepped cylinders similar to the first outer sleeve are arranged at both ends of the inner sleeve.

[0010] Preferably, the connecting strip is integrated with the inner sleeve wall, and a groove is directly cut on the wall.

[0011] Preferably, an inner sleeve thread is arranged on the inner wall of the inner sleeve, and the sleeve thread is consistent with the steel bar thread on the outer wall of the steel bar.

[0012] Preferably, a positioning hole is further provided on the outer wall of the inner sleeve for positioning the inner sleeve to facilitate positioning during installation.

[0013] Better yet, three stepped cylinders that fit and squeeze each other are arranged on the inner cylinder wall of the inner sleeve and the inner cylinder wall of the corresponding end of the first outer sleeve, and adjacent cylinders are connected by cones. Three stepped cylinders that fit and squeeze each other are arranged on the inner cylinder wall of the inner sleeve and the inner cylinder wall of the corresponding end of the second outer sleeve, and adjacent cylinders are connected by cones.

[0014] Preferably, the outer wall of the inner sleeve and the inner wall of the corresponding end of the first outer sleeve are provided with mutually cooperating and extruding frusta, and the outer wall of the inner sleeve and the inner wall of the corresponding end of the second outer sleeve are provided with mutually cooperating and extruding frusta.

[0015] The utility model has the advantages that the steel bar connection assembly can connect steel bars conveniently, labor-savingly and without rotation by squeezing the inner sleeve by the outer sleeve, and the steel bar connection assembly is easy to carry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a steel bar connection assembly according to an embodiment of the utility model.

[0017] Figure 2 It is a structural schematic diagram of an inner sleeve of a steel bar connection assembly according to an embodiment of the utility model.

[0018] Figure 3 It is a schematic structural diagram of a steel bar connection assembly before connecting steel bars to be extruded in one embodiment of the utility model.

[0019] Figure 4It is a schematic structural diagram of a steel bar connection assembly after connecting steel bars extruded in one embodiment of the utility model.

[0020] Figure 5 It is a structural schematic diagram of a steel bar connection assembly according to another embodiment of the utility model.

[0021] Figure 6 It is a structural schematic diagram of an inner sleeve of a steel bar connection assembly in another embodiment of the utility model. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] like Figure 1 , 2 As shown, the steel bar connection assembly includes a first outer sleeve 2, a second outer sleeve 1, and an inner sleeve 3.

[0024] A stepped cylinder is arranged on the inner wall of the first outer sleeve 2, and adjacent cylinders are connected by a cone. In this embodiment, a first cylinder 22, a second cylinder 24, and a third cylinder 26 are arranged. The first cylinder 22 and the second cylinder 24 are connected by a first cone 23, and the second cylinder 24 and the third cylinder 26 are connected by a second cone 25.

[0025] The second outer sleeve 1 is completely identical to the first outer sleeve 2 .

[0026] A plurality of through grooves 33 are evenly arranged on the wall of the inner sleeve 3, and the two ends of the grooves 33 are connected by connecting strips 31 and 32 respectively, so that the inner sleeve 3 is still integrated and convenient to carry and install.

[0027] The connecting strips 31, 32 may also be integrated with the wall of the inner sleeve 3, and the grooves 33 may be directly cut on the wall.

[0028] An inner sleeve thread 34 is arranged on the inner wall of the inner sleeve 3, and the inner sleeve thread 34 is consistent with the steel bar thread on the outer wall of the steel bar. When the steel bar is connected by the connecting device and the inner sleeve 3 is squeezed, the inner sleeve thread 34 can better engage with the steel bar thread on the outer wall of the steel bar.

[0029] Stepped cylinders are arranged on the outer walls of the corresponding ends of the inner sleeve 3 and the first outer sleeve 1, and adjacent cylinders are connected by cones. In this embodiment, a fourth cylinder 35, a fifth cylinder 37, and a sixth cylinder 39 are arranged, and the fourth cylinder 35 and the fifth cylinder 37 are connected by a first cone 36, and the fifth cylinder 37 and the sixth cylinder 39 are connected by a second cone 38.

[0030] A positioning hole 30 is also provided on the outer wall of the inner sleeve 3 for positioning the inner sleeve 3 to facilitate positioning during installation.

[0031] When using the steel bar connection assembly, firstly, the first outer sleeve 1 and the second outer sleeve 2 are respectively put on the two ends of the inner sleeve 3, and then the steel bar 4 is inserted into the cavity of the inner sleeve 3. Figure 3 Then, the first outer sleeve 1 and the second outer sleeve 2 move toward each other, and the first outer sleeve 1 and the second outer sleeve 2 shrink the inner sleeve 3 toward the inner sleeve axis, and bite the steel bar 4 tightly. Figure 4 .

[0032] like Figure 5 , 6 As shown, it is another example of a steel bar connection assembly, which includes a third outer sleeve 10, a fourth outer sleeve 20, and a second inner sleeve 30. The outer wall of the second inner sleeve 30 has two sides with cones 350. The corresponding third outer sleeve 10 is exactly the same as the fourth outer sleeve 20. The inner wall of the fourth outer sleeve 20 is an inner cone 201 corresponding to the cone 350 on the outer wall of the inner sleeve 30.

[0033] A plurality of through grooves 330 are evenly arranged on the wall of the second inner sleeve 30, and two ends of the grooves 330 are connected by connecting strips 310 and 320 respectively, so that the inner sleeve 30 is still integrated and convenient to carry and install.

[0034] An inner sleeve thread 340 is arranged on the inner wall of the second inner sleeve 30, and the inner sleeve thread 340 is consistent with the steel bar thread on the outer wall of the steel bar. When the steel bar is connected by the connecting device and the second inner sleeve 3 is squeezed, its inner sleeve thread 340 can better engage with the steel bar thread on the outer wall of the steel bar.

[0035] The relationship and usage method among the third outer sleeve 10, the fourth outer sleeve 20, and the second inner sleeve 30 are the same as those in the previous embodiment and will not be described in detail.

Claims

1. A steel bar connection assembly, characterized in that: It includes a first outer sleeve, a second outer sleeve and an inner sleeve; a plurality of through grooves are evenly arranged on the wall of the inner sleeve, and the two ends of the grooves are connected by connecting strips respectively; the first outer sleeve and the second outer sleeve are respectively sleeved on the two ends of the inner sleeve, and the inner sleeve is pressed toward each other by the first outer sleeve and the second outer sleeve to fix the steel bars in the inner sleeve.

2. The steel bar connection assembly according to claim 1, characterized in that: The inner wall of the first outer sleeve is provided with stepped cylinders, and adjacent cylinders are connected by truncated cones. The second outer sleeve is completely identical to the first outer sleeve, and the two ends of the inner sleeve are respectively provided with stepped cylinders similar to the first outer sleeve.

3. The steel bar connection assembly according to claim 1, characterized in that: An inner sleeve thread is arranged on the inner wall of the inner sleeve, and the sleeve thread is consistent with the steel bar thread on the outer wall of the steel bar.

4. The steel bar connection assembly according to claim 1, characterized in that: A positioning hole is arranged on the outer wall of the inner sleeve for positioning the inner sleeve.

5. The steel bar connection assembly according to claim 1, characterized in that: The outer cylinder wall of the inner sleeve and the inner cylinder wall at the corresponding end of the first outer sleeve are provided with three stepped cylinders that cooperate and extrude with each other, and the adjacent cylinders are connected by a frustum. The outer cylinder wall of the inner sleeve and the inner cylinder wall at the corresponding end of the second outer sleeve are provided with three stepped cylinders that cooperate and extrude with each other, and the adjacent cylinders are connected by a frustum.

6. The steel bar connection assembly according to claim 1, characterized in that: The inner sleeve outer wall and the inner sleeve wall at the corresponding end of the first outer sleeve are provided with mutually cooperating and extruding truncated cones, and the inner sleeve outer wall and the inner sleeve wall at the corresponding end of the second outer sleeve are provided with mutually cooperating and extruding truncated cones.

7. The steel bar connection assembly according to claim 1, characterized in that: The connecting strip is integrated with the inner sleeve wall, and a groove is directly cut on the wall.

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