Extrusion type split sleeve suitable for modular connection and auxiliary mounting tool

Abstract

The utility model provides an extrusion type split sleeve suitable for modular connection and an auxiliary installation tool. The extrusion type split sleeve comprises a buckling pipe of a multi-petal type split structure and one or two extrusion lantern rings. Internal threads are formed in the buckling pipe, and one or two annular grooves are formed in the outer wall of the buckling pipe; when the number of the annular groove is one, the annular groove extends from one end of the buckling pipe to the other end of the buckling pipe, and the length of the corresponding extrusion lantern ring is not larger than the width of the annular groove. When the number of the annular grooves is two, the two annular grooves are arranged in a spaced mode and located at the two ends of the buckling pipe respectively, and the lengths of the two corresponding extrusion lantern rings are not larger than the widths of the corresponding annular grooves respectively. The buckling pipe is connected with the steel bar wire head through plastic deformation of the extrusion lantern ring, it can be guaranteed that the steel bar connector can meet the corresponding standard requirement under the condition that the steel bar wire head does not abut against the steel bar connector, and therefore the steel bar connector is well suitable for the construction scene of steel bar modular connection.

Description

Technical Field

[0001] This utility model relates to the field of rebar connection technology, specifically to an extrusion-type split sleeve and auxiliary installation tool suitable for modular connections. Background Technology

[0002] In current building construction, rebar connections are still mainly threaded, especially straight threaded connections. However, in bridges, tunnels, roads, and other fields, rebar is being modularly processed and fabricated. This involves prefabricating the rebar into the required components through binding or welding before connecting them.

[0003] Once steel bars are processed into components, they cannot be rotated or moved; moreover, these steel bar components are typically large in size and heavy in weight. In actual connection processes, it is difficult to ensure that the distance between multiple connected steel bars remains consistent. Conventional sleeve products, according to standards, must ensure that the threaded ends of the steel bars at both ends are aligned, making them unsuitable for such working conditions. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a compression-type split sleeve and auxiliary installation tool suitable for modular connection, which is suitable for the working condition where the ends of the reinforcing bars are not aligned.

[0005] To solve the above-mentioned technical problems, the present invention includes:

[0006] A compression-type split sleeve suitable for modular connections includes a multi-lobed split-structure snap-fit ​​tube and one or two compression rings. The snap-fit ​​tube is cylindrical both inside and out, and its interior has internal threads for connecting with the threads of two reinforcing bars. The outer wall of the snap-fit ​​tube has one or two annular grooves for compression connection with one or two compression rings. When there is one annular groove, it extends from one end of the snap-fit ​​tube to the other, the length of the corresponding compression ring is not greater than the width of the annular groove, and the outer wall of the compression ring has three evenly distributed compression positions along the axial direction. When there are two annular grooves, they are spaced apart and located at opposite ends of the snap-fit ​​tube, the lengths of the corresponding two compression rings are also not greater than the width of the corresponding annular groove, and each compression ring has one compression position on its outer wall.

[0007] Preferably, the tooth profile, pitch, and direction of the internal thread are the same as those of the thread end of the reinforcing bar.

[0008] Preferably, the fastening tube has a two-part split structure.

[0009] Preferably, the multiple flaps of the fastening tube are uniformly cut from the same round tube, and an adjustment gap is left between two adjacent flaps, the width of which is 2 to 6 mm.

[0010] Preferably, the outer diameter of the internal thread of the snap-fit ​​tube is 0.1 to 0.6 mm smaller than the outer diameter of the thread end of the reinforcing bar.

[0011] Preferably, the inner and outer surfaces of the compression collar are both cylindrical, and its inner diameter is not less than the outer diameter of the fastening tube.

[0012] An auxiliary installation tool for modular connections is provided for connecting upper and lower rebar modules using multiple extrusion-type split sleeves. The tool includes a support plate, two bolt cutters, and multiple rubber bands. The support plate is rectangular with multiple U-shaped slots along its long side. The number of slots corresponds to the number of extrusion-type split sleeves and the number of rebars forming the rebar module, and the diameter of the slots is not less than the outer diameter of the rebars. The number of rubber bands is one or two times the number of extrusion-type split sleeves. Two bolt cutters are respectively positioned at the bottom ends of the support plate to clamp the lower rebars and horizontally fix the support plate onto the lower rebar module. The support plate is used to place multiple extrusion collars, which are respectively fitted onto the lower rebars, before the extrusion connection. The rubber bands are used to bind the fastening tubes fastened to the ends of the upper and lower rebars before the extrusion connection.

[0013] The beneficial effects of this utility model are:

[0014] This utility model provides a compression-type split sleeve suitable for modular connections, comprising a multi-lobed split-structured snap-fit ​​tube and a corresponding compression collar. An annular groove is provided on the outer wall of the snap-fit ​​tube. Utilizing the plastic compression deformation of the compression collar, the internal thread of the snap-fit ​​tube engages with the external thread of the rebar thread, ultimately forming a rebar connection joint. This utility model features a simple sleeve structure, is easy to use, and has a low cost. By utilizing the plastic deformation of the compression collar to connect the snap-fit ​​tube and the rebar thread, it ensures that the rebar joint meets relevant standard requirements even when the rebar threads are not aligned. Therefore, it is well-suited for modular rebar connection construction scenarios and can also be applied to traditional rebar thread alignment scenarios. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the application state of the first embodiment of the extrusion-type split sleeve;

[0016] Figure 2 This is a schematic cross-sectional view of the first embodiment of the extrusion-type split sleeve;

[0017] Figure 3 This is a schematic diagram of the snap-fit ​​tube structure of the first embodiment of the extrusion-type split sleeve;

[0018] Figure 4 This is a schematic diagram of the extrusion collar structure of the first embodiment of the extrusion-type split sleeve;

[0019] Figure 5 This is a schematic diagram of the application state of the second embodiment of the extrusion-type split sleeve;

[0020] Figure 6 This is a schematic cross-sectional view of the application of the second embodiment of the extrusion-type split sleeve;

[0021] Figure 7 This is a schematic diagram of the snap-fit ​​tube structure of the second embodiment of the extrusion-type split sleeve;

[0022] Figure 8 This is a schematic diagram of the extrusion collar structure of the second embodiment of the extrusion-type split sleeve;

[0023] Figure 9 This is a first state diagram showing the auxiliary operation of the first embodiment of the extrusion-type split sleeve using auxiliary installation tools;

[0024] Figure 10 This is a first-state side view of the first embodiment of the extrusion-type split sleeve being assisted in the operation using an auxiliary installation tool;

[0025] Figure 11 This is a second state diagram showing the auxiliary operation of the first embodiment of the extrusion-type split sleeve using auxiliary installation tools;

[0026] Figure 12 This is a third state diagram showing the auxiliary operation of the first embodiment of the extrusion-type split sleeve using auxiliary installation tools;

[0027] Figure 13 This is a fourth state diagram showing the auxiliary operation of the first embodiment of the extrusion-type split sleeve using auxiliary installation tools;

[0028] In the diagram: 1. Rebar, 2. Extrusion collar, 3. Fastening tube, 301. Annular groove, 302. Internal thread, 303. Adjustment joint; 4. Support plate, 5. Pliers, 6. Rubber band. Detailed Implementation

[0029] To facilitate understanding of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments. Those skilled in the art should understand that the described embodiments are merely illustrative and should not be construed as limiting the scope of this utility model.

[0030] Example 1:

[0031] like Figure 1-4As shown, this utility model provides a compression-type split sleeve suitable for modular connection. Its first embodiment includes a multi-lobed split structure fastening tube 3 and two compression collars 2. The inner and outer sides of the fastening tube 3 are cylindrical, and the inside of the fastening tube 3 is provided with an internal thread 302 for connecting with the threaded ends of two steel bars. The thread profile, pitch, and direction of the two reinforcing bars 1 are consistent. The thread profile, pitch, and direction of the internal thread 302 are the same as those of the thread profile, pitch, and direction of the reinforcing bar 1. The outer diameter of the internal thread 302 is 0.1 to 0.6 mm smaller than the outer diameter of the thread of the reinforcing bar 1. Two annular grooves 301 are provided at intervals on the outer wall of the snap-fit ​​tube 3, which are used for extrusion connection with two extrusion collars 2. The two annular grooves 301 are located at both ends of the snap-fit ​​tube 3. The inner and outer sides of the extrusion collar 2 are cylindrical, and its inner diameter is not less than the outer diameter of the snap-fit ​​tube 3. The length of the two extrusion collars 2 is not greater than the width of the corresponding annular groove 301, and each extrusion collar 2 has an extrusion position on its outer wall.

[0032] The multiple segments of the interlocking tube 3 are uniformly cut from the same round tube. The shapes and sizes of the multiple segments are consistent, and an adjustment gap 303 is left between adjacent segments. The width of the adjustment gap 303 is 2-6mm, depending on the specifications of the reinforcing steel. The interlocking tube 3 is a two-part split structure.

[0033] Example 2:

[0034] like Figure 5-8 As shown, this utility model provides a compression-type split sleeve suitable for modular connection. Its second embodiment includes a compression collar 2. An annular groove 301 is provided on the outer wall of the fastening tube 3 for compression connection with the compression collar 2. The annular groove 301 extends from one end of the fastening tube 3 to the other end. The length of the compression collar 2 is not greater than the width of the annular groove 301, and the outer wall of the compression collar 2 has three uniformly distributed compression positions along the axial direction.

[0035] With the same dimensions for the snap-fit ​​tube 3, compared to the first embodiment, the length of the annular groove 301 in this embodiment is greater than the sum of the lengths of the two annular grooves 301 in the first embodiment, and the corresponding extrusion collar 2 is also extended. Therefore, the outer wall of the extrusion collar 2 has three extrusion positions, and these three extrusion positions are extruded using cold extrusion clamps to ensure the connection performance of the rebar joint.

[0036] Example 3:

[0037] like Figure 9-13As shown, this utility model also provides an auxiliary installation tool suitable for modular connections, used for auxiliary installation when connecting upper and lower rebar modules using multiple extrusion-type split sleeves. The auxiliary installation tool includes a support plate 4, two bolt cutters 5, and multiple rubber bands 6; the support plate 4 is a long rectangular shape, and multiple U-shaped slots are opened on one long side of the support plate 4. The number of slots is consistent with the number of extrusion-type split sleeves and the number of rebars constituting the rebar module, and the diameter of the slots is not less than the outer diameter of the rebar. The number of rubber bands 6 is one or two times the number of extrusion-type split sleeves; the two bolt cutters 5 are respectively set at the bottom ends of the support plate 4, used to clamp the lower rebar and fix the support plate 4 horizontally on the lower rebar module. The support plate 4 is used to place multiple extrusion collars 2 respectively fitted onto multiple lower rebars before extrusion connection. The rubber bands 6 are used to bind the fastening tubes 3 fastened to the ends of the upper and lower rebars before extrusion connection.

[0038] When using this auxiliary installation tool to connect the upper and lower rebar modules, taking the first embodiment of the extrusion-type split sleeve as an example, firstly, from one side of the lower rebar module, the multiple U-shaped slots on the support plate 4 are respectively clamped onto the multiple lower rebars. Then, the two bolt clamps 5 are respectively clamped onto the two outermost lower rebars, so that the support plate 4 is kept in a horizontal and fixed position, and this position is below the threaded end of the lower rebar. Figure 10 As shown; then, multiple pairs of extruded collars 2 are respectively fitted onto the corresponding lower reinforcing bars and placed on the support plate 4, as shown. Figure 11 As shown; then, multiple snap-fit ​​tubes 3 are respectively snapped onto the threads of the corresponding upper and lower reinforcing bars to be connected, and each snap-fit ​​tube 3 is tightly bound together using the elasticity of the rubber band 6, as shown. Figure 12 As shown; finally, move the two extrusion collars 2 on each lower rebar upwards to the two annular grooves 301 of the corresponding fastening tube 3, and use cold extrusion pliers to extrude the two extrusion collars 2 to form the corresponding rebar joint, thus connecting the upper and lower rebar modules. After the two rebar modules are connected, remove this auxiliary installation tool from the lower rebar module, and then repeat the above steps to connect other two rebar modules.

[0039] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A compression-type split sleeve suitable for modular connections, characterized in that, The device includes a multi-lobed split-structure snap-fit ​​tube (3) and one or two compression collars (2); the snap-fit ​​tube (3) is cylindrical both inside and out, and the inside of the snap-fit ​​tube (3) is provided with internal threads (302) for connecting with the threads of two steel bars; the outer wall of the snap-fit ​​tube (3) is provided with one or two annular grooves (301), which are respectively used for compression connection with one or two compression collars (2); when there is one annular groove (301), the annular groove (301) extends from one end of the snap-fit ​​tube (3) Extending to its other end, the length of the corresponding extrusion collar (2) is not greater than the width of the annular groove (301), and the outer wall of the extrusion collar (2) has three uniformly distributed extrusion positions along the axial direction; when there are two annular grooves (301), the two annular grooves (301) are spaced apart and located at both ends of the fastening tube (3), and the lengths of the corresponding two extrusion collars (2) are also not greater than the width of the corresponding annular groove (301), and each extrusion collar (2) has one extrusion position on its outer wall.

2. The extrusion-type split sleeve suitable for modular connection according to claim 1, characterized in that, The tooth profile, pitch, and direction of the internal thread (302) are the same as those of the thread end of the reinforcing bar.

3. The extrusion-type split sleeve suitable for modular connection according to claim 1, characterized in that: The fastening tube (3) is a two-part split structure.

4. A compression-type split sleeve suitable for modular connection according to claim 1, characterized in that, The multiple lobes of the fastening tube (3) are uniformly cut from the same round tube, and an adjustment slot (303) is left between two adjacent lobes. The width of the adjustment slot (303) is 2 to 6 mm.

5. A compression-type split sleeve suitable for modular connection according to claim 1, characterized in that, The outer diameter of the inner thread of the snap-fit ​​tube (3) is 0.1 to 0.6 mm smaller than the outer diameter of the thread of the reinforcing bar.

6. A compression-type split sleeve suitable for modular connection according to claim 1, characterized in that, The inner and outer sides of the compression collar (2) are both cylindrical, and its inner diameter is not less than the outer diameter of the fastening tube (3).

7. An auxiliary installation tool suitable for modular connections, used for auxiliary installation when connecting upper and lower steel bar modules using multiple extrusion-type split sleeves as described in any one of claims 1-6, characterized in that, The assembly includes a tray (4), two bolt cutters (5), and multiple rubber bands (6). The tray (4) is a long rectangular shape, and multiple U-shaped slots are provided on one side of the long side of the tray (4). The number of slots is consistent with the number of extrusion-type split sleeves and the number of steel bars that make up the steel bar module. The diameter of the slots is not less than the outer diameter of the steel bars. The number of rubber bands (6) is one or two times the number of extrusion-type split sleeves. The two bolt cutters (5) are respectively set at the bottom ends of the tray (4) to clamp the lower steel bars and fix the tray (4) horizontally on the lower steel bar module. The tray (4) is used to place multiple extrusion collars (2) that are respectively fitted onto multiple lower steel bars before extrusion connection. The rubber bands (6) are used to bind the fastening tubes (3) that are fastened to the upper and lower steel bar wire ends before extrusion connection.

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