Tie bar soft connector and tie bar assembly
The combination of interlocking sleeve and rope locking structure solves the problem of difficult connection of existing tie bars, realizes convenient and efficient construction connection, and improves construction efficiency and connection strength.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SINOHYDRO BUREAU 8 CO LTD
- Filing Date
- 2025-04-18
- Publication Date
- 2026-05-12
AI Technical Summary
When existing tie bars are connected to main bars, especially in large-diameter components, they are difficult to install effectively, and the construction cost is high and the efficiency is low, resulting in weak points in the stress distribution.
The system employs a combination structure of interlocking sleeves, rope connectors, binding ropes, and locking pins. The interlocking sleeves deform and engage with the ends of the tie bars, while the binding ropes and locking pins are used to achieve cross-node connections with the main reinforcement bars, simplifying operations and reducing construction costs.
It enables convenient connection between tie bars and main bars, reduces construction costs and improves construction efficiency, and enhances the strength and anti-slip performance of the connection.
Smart Images

Figure CN224228115U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of building engineering technology, specifically to a tie bar flexible connector and tie bar assembly. Background Technology
[0002] Tie bars are an indispensable part of reinforced concrete structures, especially in components with extremely high requirements for seismic and shear resistance. Existing tie bars generally have hooks at both ends to connect with the main reinforcement. However, in actual engineering, when the diameter of the tie bars in thick slabs, walls, or wide beams and columns is relatively large, it is impossible to install them if they are fabricated with 135° hooks at both ends. If they are fabricated with a 135° hook at one end and a 90° hook at the other, the 90° hook end cannot effectively form a firm connection with the intersection of the main reinforcement, creating a weak point. Furthermore, due to the large diameter of the tie bars, it is difficult to bend them again on site.
[0003] To facilitate connection with the main reinforcement bar, Chinese patent document with application number 202221551899.2 discloses a pre-embedded tie bar for construction. Specifically, it discloses a pre-embedded component, an extension component connecting the pre-embedded component, and a sleeve fitted at the connection between the pre-embedded component and the extension component. One end of the pre-embedded component has several grooves and bosses located within the sleeve, and the other end has a hook for connection with the main reinforcement bar. One end of the extension component has grooves and bosses located within the sleeve that match the grooves of the pre-embedded component's boss. The pre-embedded component and the extension component are connected by corresponding grooves and bosses, and the extension bar is fixed by the sleeve to achieve the function of extending the tie bar. However, this pre-embedded tie bar requires the grooves and bosses to be set on both the pre-embedded component and the extension component before construction or on-site, resulting in high construction costs and low construction efficiency. Utility Model Content
[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a tie bar soft connector and tie bar assembly that are easy to connect, have low construction cost and high construction efficiency.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:
[0006] A flexible connector for tie bars includes a snap-fit sleeve, a connecting rope body, a binding rope, and a locking pin. The connecting rope body is fixed to one end of the snap-fit sleeve. The snap-fit sleeve has a socket hole inside for inserting the end of the tie bar. Under compression, the snap-fit sleeve deforms inward to snap the end of the tie bar. The binding rope connects the locking pin and the connecting rope body for binding the main tie bar. The connecting rope body has a locking hole for inserting the locking pin.
[0007] As a further improvement to the above technical solution:
[0008] The keyhole is arc-shaped, and the mortise lock is adapted to the shape of the keyhole.
[0009] The keyholes extend through the opposite sides of the rope body.
[0010] Both sides of the mortise lock are provided with anti-slip friction texture.
[0011] The rope receiving body is provided with at least two rope-passing channels. One end of each rope-passing channel is connected to the receiving hole, and the other end extends through to the side or end face of the rope receiving body. The two ends of the binding rope are connected to form a loop rope, which is passed through the two rope-passing channels and hung on the lock.
[0012] The socket is located between each rope threading channel.
[0013] The two ends of the binding rope are connected to form an anchor knot, which is located inside the socket hole and is larger than the rope passage.
[0014] The lock is provided with a rope groove, and a rope hanging post is provided between the two opposite side walls of the rope groove, and the loop rope is hung on the rope hanging post.
[0015] The outer wall of the engagement sleeve is provided with an outwardly protruding pressure-bearing part.
[0016] A tie bar assembly includes a tie bar, at least one end of which is provided with the aforementioned tie bar flexible connector, the end of the tie bar being inserted into a socket of a locking sleeve, and the locking sleeve deforming inward to engage the end of the tie bar.
[0017] Compared with the prior art, the advantages of this utility model are:
[0018] This utility model discloses a flexible connector for tie bars. In use, the end of the tie bar is inserted into the socket of the engagement sleeve. Under the action of a compression device, the engagement sleeve deforms inward to engage the end of the tie bar, thus fixing the tie bar to the end of the tie bar. When connecting to the main reinforcement bar, the binding rope is wrapped around the intersection of the main reinforcement bar several times, and then the locking bolt is inserted into the locking hole to tighten the rope. This allows for the connection of the end of the tie bar to the intersection of the main reinforcement bar. The connection operation is convenient, and the groove and boss design results in low construction cost and high construction efficiency.
[0019] The tie bar assembly of this utility model, when connected to the main bar, involves wrapping the binding rope around the intersection node of the main bar several times, and then inserting the locking pin into the locking hole to keep the binding rope taut. This allows the end of the tie bar to be connected to the intersection node of the main bar. Not only is the connection operation convenient, but the groove and boss are also designed to reduce construction costs and increase construction efficiency. Attached Figure Description
[0020] Figure 1 This is a three-dimensional structural diagram of the tie bar flexible connector of this utility model.
[0021] Figure 2 This is a schematic diagram of the main structure of the tie bar flexible connector of this utility model.
[0022] Figure 3 This is a three-dimensional structural diagram of the locking mechanism of the tie bar flexible connector of this utility model.
[0023] Figure 4 This is a side view of the locking mechanism of the tie rod flexible connector of this utility model.
[0024] Figure 5 This is a three-dimensional structural diagram of the tie bar assembly of this utility model.
[0025] Figure 6 This is a schematic diagram of the main structure of the tie bar assembly of this utility model.
[0026] Figure 7 This is a diagram showing the usage status of the tie bar assembly of this utility model.
[0027] Figure 8 yes Figure 7 A magnified structural diagram of point A in the middle.
[0028] Figure 9 This is a structural schematic diagram of a tie bar assembly according to this utility model.
[0029] The labels in the diagram represent:
[0030] 1. Engaging sleeve; 11. Socket hole; 2. Rope receiving body; 21. Rope threading channel; 3. Binding rope; 31. Anchor knot; 4. Lock; 41. Rope groove; 42. Rope hanging post; 5. Tie bar; 6. Lock hole; 7. Anti-slip friction texture; 8. Pressure-bearing part; 9. Main reinforcement. Detailed Implementation
[0031] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0032] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0034] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0035] Example 1:
[0036] Figures 1 to 4 This invention illustrates one embodiment of the flexible connector for tie bars. The flexible connector for tie bars in this embodiment includes a snap-fit sleeve 1, a connecting rope body 2, a binding rope 3, and a locking pin 4. The connecting rope body 2 is fixed to one end of the snap-fit sleeve 1. The snap-fit sleeve 1 has a socket hole 11 inside for inserting the end of the tie bar 5. Under compression, the snap-fit sleeve 1 deforms inward to snap the end of the tie bar 5. The binding rope 3 is connected between the locking pin 4 and the connecting rope body 2 and is used to bind the main rib 9. The connecting rope body 2 has a locking hole 6 for inserting the locking pin 4.
[0037] In use, the end of the tie bar 5 is inserted into the socket 11 of the interlocking sleeve 1. Under the action of the extrusion device, the interlocking sleeve 1 deforms inward to interlock the end of the tie bar 5, thereby fixing the tie bar flexible connector at the end of the tie bar 5. When connecting with the main bar 9, the binding rope 3 is wrapped around the intersection node of the main bar 9 several times, and then the locking bolt 4 is inserted into the locking hole 6 to make the binding rope 3 taut. This allows the end of the tie bar 5 to be connected to the intersection node of the main bar 9. The connection operation is not only convenient, but also has low construction cost and high construction efficiency due to the groove and boss design.
[0038] Furthermore, in this embodiment, the keyhole 6 is arc-shaped, and the shape of the mortise lock 4 is adapted to the keyhole 6. After the mortise lock 4 is inserted into the arc-shaped keyhole 6, because both the mortise lock 4 and the keyhole 6 are arc-shaped, the mortise lock 4 is not easy to loosen or be pulled out.
[0039] Furthermore, in this embodiment, the locking hole 6 extends through both sides of the rope receiving body 2. This facilitates adjustment of the insertion depth of the locking bolt 4. Of course, in other embodiments, the locking hole 6 may only extend to one side of the rope receiving body 2.
[0040] Furthermore, such as Figure 3 As shown in this embodiment, anti-slip friction textures 7 are provided on both sides of the locking bolt 4. In the hardened concrete structure, the anti-slip friction textures 7 facilitate friction between the locking bolt 4 and the concrete, thereby improving the bond strength between the tie bar 5 and the concrete structure, as well as its resistance to loosening and slippage.
[0041] Furthermore, such as Figure 2 As shown, in this embodiment, the rope receiving body 2 is provided with at least two rope-passing channels 21. One end of the rope-passing channel 21 is connected to the socket 11, and the other end extends to the side or end face of the rope receiving body 2. The two ends of the binding rope 3 are connected to form a loop rope, which is passed through the two rope-passing channels 21 and hung on the lock 4. During the connection operation, the binding rope 3 can be hung on the lock 4 first, and then the two ends of the binding rope 3 can be passed through the two rope-passing channels 21 to the socket 11 respectively, and extend out from the end of the socket 11 away from the rope receiving body 2 to enter the connection. After the two ends of the binding rope 3 are connected, the connection is pulled into the socket 11.
[0042] Furthermore, in this embodiment, the insertion hole 11 is located between each rope passage 21. Of course, the insertion hole 11 can also be located in other positions that facilitate the insertion of the lock 4 after the rope 3 is tied.
[0043] Furthermore, in this embodiment, the two ends of the binding rope 3 are connected to form an anchor knot 31, which is located inside the socket hole 11 and is larger than the rope passage 21. In this embodiment, the lock 4 is provided with a rope receiving groove 41, and a rope hanging post 42 is provided between the two opposite side walls of the rope receiving groove 41, and the loop rope is hung on the rope hanging post 42.
[0044] Furthermore, in this embodiment, the outer wall of the interlocking sleeve 1 is provided with an outwardly protruding pressure-receiving part 8. A compression device is used to apply pressure to the pressure-receiving part 8, causing the interlocking sleeve 1 to deform inward, so that the interlocking sleeve 1 and the tie bar 5 are interlocked and fastened.
[0045] Furthermore, in this embodiment, the engagement sleeve 1 is made of a metal material that undergoes plastic deformation under compression, such as iron, aluminum, or aluminum alloy.
[0046] Example 2:
[0047] Figures 5 to 8This illustration shows one embodiment of the tie bar assembly of this utility model. The tie bar assembly of this embodiment includes a tie bar 5, at least one end of which is provided with a tie bar flexible connector as described in Embodiment 1. The end of the tie bar 5 is inserted into the socket 11 of the engagement sleeve 1, and the engagement sleeve 1 deforms inward to engage the end of the tie bar 5. When connecting to the main reinforcement 9, the binding rope 3 is wrapped around the intersection node of the main reinforcement 9 several times, and then the locking bolt 4 is inserted into the locking hole 6 to keep the binding rope 3 taut. This allows the end of the tie bar 5 to be connected to the intersection node of the main reinforcement 9. This connection is not only convenient but also features a groove and a boss, resulting in low construction cost and high construction efficiency.
[0048] In this embodiment, tie bar 5 is provided with tie bar flexible connectors at both ends.
[0049] In other embodiments, such as Figure 9 As shown, one end of the tie bar 5 is equipped with a tie bar flexible connector, and the other end is a hook end. During connection, the hook end is first hooked into the intersection of the inner main reinforcing bar 9. The other end is equipped with the tie bar flexible connector. After wrapping the binding rope 3 around the intersection of the outer main reinforcing bar 9 several times without excess wire, the locking bolt 4 is inserted into the locking hole 6, making the binding rope 3 taut and achieving flexible connection locking. This invention effectively solves the problem of large-diameter tie bars 5 being unable to be installed due to being processed with 135° hooks at both ends for anchoring. Simultaneously, it facilitates processing and installation, ensuring the anchoring performance of the tie bar 5 in reinforced concrete structures without reducing work efficiency.
[0050] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make many possible variations and modifications to the present invention, or modify it into equivalent embodiments, without departing from the scope of the present invention. Therefore, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present invention, without departing from the content of the present invention, should fall within the protection scope of the present invention.
Claims
1. A flexible connector for tie bars, characterized in that: It includes a snap-fit sleeve (1), a rope receiving body (2), a binding rope (3), and a locking bolt (4). The rope receiving body (2) is fixed to one end of the snap-fit sleeve (1). The snap-fit sleeve (1) has a socket hole (11) inside for inserting the end of the tie bar (5). The snap-fit sleeve (1) deforms inward under compression to snap the end of the tie bar (5). The binding rope (3) is connected between the locking bolt (4) and the rope receiving body (2) and is used to tie the main reinforcement (9). The rope receiving body (2) has a locking hole (6) for inserting the locking bolt (4).
2. The tie bar flexible connector according to claim 1, characterized in that: The keyhole (6) is arc-shaped, and the shape of the mortise lock (4) is adapted to the keyhole (6).
3. The tie bar flexible connector according to claim 2, characterized in that: The lock hole (6) passes through the opposite sides of the rope body (2).
4. The tie bar flexible connector according to claim 2, characterized in that: The mortise lock (4) has anti-slip friction textures (7) on both sides.
5. The tie bar flexible connector according to claim 1, characterized in that: The rope receiving body (2) is provided with at least two rope passages (21). One end of the rope passage (21) is connected to the socket (11), and the other end extends through to the side or end face of the rope receiving body (2). The two ends of the binding rope (3) are connected to form a loop rope. The loop rope is passed through the two rope passages (21) and hung on the lock (4).
6. The tie bar flexible connector according to claim 5, characterized in that: The socket (11) is located between each rope passage (21).
7. The tie bar flexible connector according to claim 5, characterized in that: The two ends of the binding rope (3) are connected to form an anchor knot (31), which is located inside the socket hole (11) and is larger than the rope passage (21).
8. The tie bar flexible connector according to claim 5, characterized in that: The lock (4) is provided with a rope groove (41), and a rope hanging post (42) is provided between the two opposite side walls of the rope groove (41), and the loop rope is hung on the rope hanging post (42).
9. The tie bar flexible connector according to any one of claims 1 to 8, characterized in that: The outer wall of the engagement sleeve (1) is provided with an outwardly protruding pressure-bearing part (8).
10. A tie bar assembly, comprising a tie bar (5), characterized in that: At least one end of the tie bar (5) is provided with a tie bar flexible connector as described in any one of claims 1 to 9, the end of the tie bar (5) is inserted into the socket (11) of the engagement sleeve (1), and the engagement sleeve (1) deforms inward to engage the end of the tie bar (5).