Double-layer steel bar sleeve

Abstract

The utility model relates to the technical field of reinforcing steel bar sleeves, and discloses a double-layer reinforcing steel bar sleeve which comprises an outer cylinder serving as a connecting body, inner cylinders are arranged on the two sides of the inner wall of the outer cylinder, fixing boxes are fixedly connected to the opposite ends of the inner cylinders, and pull rods are connected to the inner walls of the fixing boxes in a sliding mode. The opposite ends of the pull rods are fixedly connected with sliding blocks, the opposite ends of the sliding blocks are rotationally connected with rotating blocks, and the opposite ends of the rotating blocks are rotationally connected with inserting blocks. The pull rod drives the sliding block, the sliding block drives the rotating block, the rotating block drives the inserting block, then the inner cylinder is inserted into the outer cylinder, when the pull rod is loosened, the sliding block is sprung by the spring, the sliding block drives the rotating block, and the rotating block drives the inserting block to be inserted into the fixing hole to be fixed, so that steel bar connection operation is smoother; and flow interruption and delay caused by inconvenient operation are reduced, and the continuity and efficiency of construction are improved.

Description

Technical Field

[0001] This utility model relates to the field of rebar sleeve technology, and in particular to a double-layer rebar sleeve. Background Technology

[0002] Rebar connecting sleeves are mechanical connections among rebar connection methods. They are characterized by energy saving and are not limited by the composition and type of rebar. Rebar sleeves, also known as rebar joints, are connecting parts with internal threads corresponding to the threaded ends of rebars. The ends of the rebars are first processed into straight threads using a rolling process, and then the two rebars are connected to each other using a corresponding connecting sleeve.

[0003] The current connecting sleeve requires rotating the steel bar to connect two steel bars to make it threaded into the connecting sleeve when connecting two steel bars. However, when installing the second steel bar, it is necessary to rotate the steel bar repeatedly to make it connect to the connecting sleeve. The number of rotations of the steel bar is large, which is very inconvenient. Especially when the steel bar to be connected is long, the installation is laborious and restrictive, which increases the workload of steel bar connection and reduces installation efficiency. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a double-layer rebar sleeve. A pull rod drives a slider, which in turn drives a rotating block, which in turn drives an insert block. The inner sleeve is then inserted into the outer sleeve. When the pull rod is released, a spring causes the slider to spring, which in turn drives the rotating block, which in turn drives the insert block to be inserted into the fixing hole for fixation. This makes the rebar connection operation smoother, reduces process interruptions and delays caused by operational inconvenience, and improves the continuity and efficiency of construction.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A double-layer rebar sleeve includes: an outer cylinder serving as the connecting body; inner cylinders arranged on both sides of the inner wall of the outer cylinder; a fixing box fixedly connected to opposite ends of the inner cylinders; a pull rod slidably connected to the inner wall of each fixing box; a slider fixedly connected to opposite ends of each pull rod; a rotating block rotatably connected to opposite ends of each slider; an insert block rotatably connected to opposite ends of each rotating block; a spring arranged between each slider and the inner wall of the fixing box; and a fixing assembly arranged on the inner wall of the inner cylinder.

[0007] Furthermore, a plurality of fixing plates are fixedly connected to one end of the outer cylinder opposite to the other end, and the inner wall of each fixing plate is provided with fixing holes corresponding to the insert block.

[0008] Furthermore, one end of each spring is connected to the slider, and the other end of each spring is connected to the inner wall of the fixed box.

[0009] Furthermore, the outer walls of the insert blocks are all slidably connected to the inner wall of the fixing box, and the outer walls of the sliders are all slidably connected to the inner wall of the fixing box.

[0010] Furthermore, the fixing component includes connecting boxes fixedly connected to both sides of the inner wall of the inner cylinder. The outer walls of the connecting boxes are rotatably connected to rotating rods. The opposite ends of the rotating rods pass through the connecting boxes and are fixedly connected to bidirectional threaded rods. The bidirectional threaded rods are connected to clamps through a moving component.

[0011] Furthermore, the moving assembly includes moving blocks threadedly connected to both sides of the outer wall of the bidirectional threaded rod, with a rotating plate rotatably connected to the opposite end of each moving block, and the opposite ends of each clamping plate rotatably connected to the opposite end of the rotating plate.

[0012] Furthermore, the bottom end of the inner cylinder is rotatably connected to the inner wall of the connecting box, and the outer wall of the rotating rod is rotatably connected to the inner wall of the inner cylinder.

[0013] Furthermore, the inner wall of each rotating rod is threaded with a screw, the opposite ends of each clamping plate are fixedly connected with a sliding rod, the outer wall of each sliding rod is slidably connected to the inner wall of the inner cylinder, and the inner wall of each clamping plate is provided with an anti-slip pad.

[0014] This utility model has the following beneficial effects:

[0015] 1. In this utility model, the pull rod drives the slider, the slider drives the rotating block, the rotating block drives the insert block, and then the inner cylinder is inserted into the outer cylinder. When the pull rod is released, the spring bounces the slider, the slider drives the rotating block, and the rotating block drives the insert block to be inserted into the fixing hole for fixation. This makes the rebar connection operation smoother, reduces process interruptions and delays caused by inconvenient operation, and improves the continuity and efficiency of construction.

[0016] 2. In this utility model, the rotating rod drives the bidirectional threaded rod to rotate, the bidirectional threaded rod drives the moving block, the moving block drives the rotating plate, and the rotating plate drives the clamping plate to fix the steel bars, thereby effectively improving the connection strength between the steel bars, making the stress distribution at the connection more uniform, and enhancing the load-bearing capacity of the overall structure. Attached Figure Description

[0017] Figure 1 is an isometric view of a double-layer steel bar sleeve proposed in this utility model;

[0018] Figure 2 This is a schematic diagram of a fixing plate structure for a double-layer steel bar sleeve proposed in this utility model;

[0019] Figure 3 This is a schematic cross-sectional view of a fixing box for a double-layer steel bar sleeve proposed in this utility model.

[0020] Figure 4This is a schematic cross-sectional view of a connection box with a double-layer steel bar sleeve proposed in this utility model;

[0021] Legend:

[0022] 1. Outer cylinder; 2. Fixing box; 3. Pull rod; 4. Slider; 5. Rotating block; 6. Inserting block; 7. Spring; 8. Fixing plate; 9. Fixing hole; 10. Inner cylinder; 11. Connecting box; 12. Rotating rod; 13. Two-way threaded rod; 14. Moving block; 15. Rotating plate; 16. Clamping plate; 17. Slide rod; 18. Screw. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Referring to Figures 1-3, one embodiment of this utility model provides a double-layer rebar sleeve, comprising: an outer cylinder 1 serving as the connecting body; inner cylinders 10 arranged on both sides of the inner wall of the outer cylinder 1; a fixing box 2 fixedly connected to opposite ends of the inner cylinders 10; a pull rod 3 slidably connected to the inner wall of the fixing box 2; a slider 4 fixedly connected to opposite ends of the pull rod 3; a rotating block 5 rotatably connected to opposite ends of the slider 4; an insert block 6 rotatably connected to opposite ends of the rotating block 5; a spring 7 arranged between the slider 4 and the inner wall of the fixing box 2; a fixing assembly arranged on the inner wall of the inner cylinder 10; multiple fixing plates 8 fixedly connected to opposite ends of the outer cylinder 1; fixing holes 9 corresponding to the insert blocks 6 on the inner walls of the fixing plates 8; one end of each spring 7 connected to the slider 4; the other end of each spring 7 connected to the inner wall of the fixing box 2; the outer walls of the insert blocks 6 slidably connected to the inner wall of the fixing box 2; and the slider 4... The outer walls are all slidably connected to the inner wall of the fixed box 2.

[0025] Specifically, this connection device adopts a double-layer structure design of outer cylinder 1 and inner cylinder 10. This unique structure can effectively alleviate stress concentration at the connection point and significantly reduce the risk of local damage caused by load changes. During installation, the construction personnel first pull the pull rod 3, which then drives the slider 4 to move. As the slider 4 moves, the rotating block 5 is also driven, which in turn causes the insertion block 6 to move together. At this time, the inner cylinder 10 is inserted into the outer cylinder 1. Then, the pull rod 3 is released. After the pull rod 3 is released, the spring 7 will quickly exert force to push the slider 4 to rebound. The rebound of the slider 4 will drive the rotating block 5 to move. The movement of the rotating block 5 will drive the insertion block 6. Finally, the insertion block 6 is inserted into the fixing hole 9 to complete the fixing. In this way, the entire steel bar connection operation becomes smoother, avoiding process stagnation and delays caused by cumbersome operation, and greatly improving the continuity and efficiency of construction.

[0026] Refer to Figure 1 and Figure 4 The fixing assembly includes connecting boxes 11 fixedly connected to both sides of the inner wall of the inner cylinder 10. Rotating rods 12 are rotatably connected to the outer walls of the connecting boxes 11. Opposite ends of the rotating rods 12 penetrate the connecting boxes 11 and are fixedly connected to bidirectional threaded rods 13. The bidirectional threaded rods 13 are connected to clamping plates 16 via a moving assembly. The moving assembly includes moving blocks 14 threadedly connected to both sides of the outer walls of the bidirectional threaded rods 13. Opposite ends of the moving blocks 14 are rotatably connected to rotating plates 15. Opposite ends of the clamping plates 16 are rotatably connected to opposite ends of the rotating plates 15. The bottom end of the inner cylinder 10 is rotatably connected to the inner wall of the connecting boxes 11. The outer walls of the rotating rods 12 are rotatably connected to the inner wall of the inner cylinder 10. Screws 18 are threadedly connected to the inner walls of the rotating rods 12. Sliding rods 17 are fixedly connected to opposite ends of the clamping plates 16. The outer walls of the sliding rods 17 are slidably connected to the inner wall of the inner cylinder 10. The clamping plates 16... The inner walls are all equipped with anti-slip pads.

[0027] Specifically, after the reinforcing bar is inserted into the inner cylinder 10, a rotation operation is applied to the rotating rod 12. The rotating rod 12 drives the connected bidirectional threaded rod 13 to start rotating. Due to its special threaded structure, the bidirectional threaded rod 13 pushes the moving block 14 along the rod body during rotation. The movement of the moving block 14 causes the rotating plate 15 to move synchronously. The rotating plate 15 then pulls the clamping plate 16 closer to the reinforcing bar until the clamping plate 16 tightly clamps the reinforcing bar, completing the fixation. This fixing method significantly improves the connection strength of the reinforcing bar, ensures even distribution of force at the connection, and effectively enhances the load-bearing capacity of the overall structure. After the rotating rod 12 rotates to the appropriate position, that is, after the clamping plate 16 has firmly fixed the reinforcing bar, the screw rod 18 is rotated. The screw rod 18 locks the rotating rod 12, preventing accidental rotation and thus preventing the clamping plate 16 from loosening. During the movement of the clamping plate 16, the sliding rod 17 slides along the inner wall of the inner cylinder 10. This sliding action serves as a guide and support, greatly improving the stability of the clamp 16 during movement and ensuring the reliability and efficiency of the entire fixing process.

[0028] Working Principle: First, the reinforcing bar is inserted into the inner cylinder 10. Then, rotating the rotating rod 12 causes the double-threaded rod 13 to rotate. As the double-threaded rod 13 rotates, it moves the moving block 14, which in turn moves the rotating plate 15. The rotating plate 15 then moves the clamping plate 16, which fixes the reinforcing bar, effectively improving the connection strength between the bars and making the stress distribution at the connection more uniform, thus enhancing the overall load-bearing capacity of the structure. When the rotating rod 12 reaches the appropriate position, rotating the screw rod 18 fixes it, preventing the clamping plate 16 from loosening. As the clamping plate 16 moves, it causes the sliding rod 17 to slide against the inner wall of the inner cylinder 10, improving the stability of the clamping plate 16. This is achieved by setting an outer cylinder 1 and an inner cylinder 10. The double-layer structure design effectively reduces stress concentration at the connection points and minimizes the risk of localized damage caused by load changes. During installation, pulling the tie rod 3 moves the slider 4, which in turn moves the rotating block 5, which in turn moves the insert block 6. Then, the inner cylinder 10 is inserted into the outer cylinder 1. At this point, the tie rod 3 is released, and the spring 7 springs the slider 4. The springing of the slider 4 moves the rotating block 5, which in turn moves the insert block 6. The insert block 6 then inserts into the fixing hole 9 for fixation. This makes the rebar connection operation smoother, reduces process interruptions and delays caused by operational inconvenience, and improves the continuity and efficiency of construction.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A double-layer steel bar sleeve, characterized in that, include: The outer cylinder (1), which serves as the main connecting body, has inner cylinders (10) on both sides of its inner wall. Each inner cylinder (10) has a fixed box (2) fixedly connected to its opposite ends. Each fixed box (2) has a pull rod (3) slidably connected to its inner wall. Each pull rod (3) has a slider (4) fixedly connected to its opposite end. Each slider (4) has a rotating block (5) rotatably connected to its opposite end. Each rotating block (5) has an insert block (6) rotatably connected to its opposite end. Each slider (4) has a spring (7) between its inner wall and the inner wall of the fixed box (2). Each inner cylinder (10) has a fixing component on its inner wall.

2. The double-layer steel bar sleeve according to claim 1, characterized in that: Multiple fixing plates (8) are fixedly connected to one side of the outer cylinder (1), and the inner wall of each fixing plate (8) is provided with fixing holes (9) corresponding to the insert block (6).

3. A double-layer steel bar sleeve according to claim 1, characterized in that: One end of each spring (7) is connected to the slider (4), and the other end of each spring (7) is connected to the inner wall of the fixed box (2).

4. A double-layer steel bar sleeve according to claim 1, characterized in that: The outer walls of the insert (6) are all slidably connected to the inner wall of the fixed box (2), and the outer walls of the slider (4) are all slidably connected to the inner wall of the fixed box (2).

5. A double-layer steel bar sleeve according to claim 1, characterized in that: The fixing component includes a connecting box (11) fixedly connected to both sides of the inner wall of the inner cylinder (10). The outer wall of the connecting box (11) is rotatably connected to a rotating rod (12). The opposite end of the rotating rod (12) passes through the connecting box (11) and is fixedly connected to a bidirectional threaded rod (13). The bidirectional threaded rod (13) is connected to a clamping plate (16) through a moving component.

6. A double-layer steel bar sleeve according to claim 5, characterized in that: The moving component includes moving blocks (14) threadedly connected to both sides of the outer wall of the bidirectional threaded rod (13). The opposite ends of the block (14) are rotatably connected to the rotating plate (15), and the opposite ends of the clamping plate (16) are rotatably connected to the opposite ends of the rotating plate (15).

7. A double-layer steel bar sleeve according to claim 5, characterized in that: The bottom end of the inner cylinder (10) is rotatably connected to the inner wall of the connecting box (11), and the outer wall of the rotating rod (12) is rotatably connected to the inner wall of the inner cylinder (10).

8. A double-layer steel bar sleeve according to claim 5, characterized in that: The inner wall of the rotating rod (12) is threaded with a screw (18), and the opposite ends of the clamping plate (16) are fixedly connected with a sliding rod (17). The outer wall of the sliding rod (17) is slidably connected to the inner wall of the inner cylinder (10), and the inner wall of the clamping plate (16) is provided with an anti-slip pad.

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