Bidirectional matching connection structure
By designing large sleeves, small sleeves, and connecting components, the problems of unstable connections and inconvenient disassembly of prestressed concrete components are solved, achieving stable connections and simplified disassembly, making it suitable for building reinforcement and renovation projects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-10
- Publication Date
- 2026-03-13
AI Technical Summary
When connecting adjacent prestressed concrete components, existing connectors are prone to twisting due to unequal corner distances or warping, making it impossible to adjust the spacing and causing inconvenience in disassembly, thus increasing disassembly efficiency.
It employs a large sleeve, a small sleeve, and connecting components, including spacer seats, locking blocks, pressure sleeves, and connectors. Through the design of the toothed structure and elastic elements, it achieves bidirectional limiting and a stable connection, allowing for easy adjustment of the spacing and disassembly.
It improves connection stability, avoids the problem of connectors getting stuck due to misalignment and cannot be adjusted, simplifies the disassembly process, and reduces disassembly complexity.
Smart Images
Figure CN223991517U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of building material connection technology, specifically a two-way mating connection structure. Background Technology
[0002] In the reinforcement and renovation of buildings, it is necessary to connect adjacent prestressed concrete components. However, the existing steel bars are rigid materials. If you want to connect the two, simple welding will definitely not be strong enough, and the subsequent processing is also inconvenient. Therefore, connectors are now set between two adjacent prestressed concrete components to facilitate the connection of the steel bars embedded in the prestressed concrete components.
[0003] There are also some connectors on the market for connecting two prestressed concrete members. However, if the distance between the corners of two adjacent prestressed concrete members is not equal or warping occurs during the connection, the connector between the two prestressed concrete members will be twisted, which will cause the mating threads inside the connector to be misaligned. Furthermore, the thread wall of the external thread and the groove walls on both sides of the internal thread will be misaligned and stuck, making it impossible to adjust the connector up and down. As a result, the two adjacent prestressed concrete members cannot be connected or separated.
[0004] When it is necessary to remove the prestressed concrete components above, the existing connectors need to be disassembled in multiple parts, which increases the disassembly efficiency. Therefore, there is an urgent need to design a two-way mating connection structure to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to provide a two-way mating connection structure, which solves the problems mentioned above, such as the weak welding and fixing of adjacent prestressed concrete components and the inconvenience of disassembly; the problem that when adjacent prestressed concrete components have unequal distances between their connecting corners or exhibit warping, the external thread of the connecting rod and the internal thread that mates with the connecting rod are skewed and stuck, making it impossible to adjust the spacing between the connecting components; and the problem that when it is necessary to remove the upper prestressed concrete component, the existing connecting components need to be disassembled into multiple parts, which increases the disassembly efficiency.
[0006] To solve the above-mentioned technical problems, this utility model provides a bidirectional mating connection structure, including a large sleeve, a small sleeve, and a connecting assembly. The large sleeve has an installation cavity, and the large sleeve and the small sleeve are connected by the connecting assembly. The connecting assembly includes a spacer seat, a locking block, a pressure sleeve, and a connector. The spacer seat is disposed inside the large sleeve, and one end of the spacer seat is provided with an elastic element between it and the installation cavity. The locking block is disposed inside the end of the pressure sleeve, and the pressure sleeve is detachably disposed inside the installation cavity. The pressure sleeve extends into the installation cavity and abuts against the other end of the spacer seat, thus confining the locking block between the pressure sleeve and the spacer seat. One end of the connector is detachably connected to the small sleeve, and the other end passes through the pressure sleeve and engages with the locking block through a toothed groove structure.
[0007] Furthermore, the toothed structure includes a plurality of one-way teeth and a toothed groove that mates with the plurality of one-way teeth. The plurality of one-way teeth are axially distributed on the outer wall of one end of the connector, and the tips of the one-way teeth are oriented toward the small sleeve.
[0008] Several grooves are formed on the inner wall of the locking block, with the large inner diameter end of each groove facing the direction of the small sleeve.
[0009] Furthermore, the outer wall of the connector is provided with a screwing section, a force-applying section and a tapered section in sequence. The screwing section is threaded to the inner wall of the small sleeve. The outer contour of the force-applying section is a polygon with at least four sides. The tapered section is located between the one-way tooth and the force-applying section.
[0010] Furthermore, the elastic element is a spring;
[0011] The maximum outer diameter of the one-way tooth of the connector is smaller than the inner diameter of the spring, and the end of the connector located inside the small sleeve is provided with a weight reduction hole.
[0012] Furthermore, the spacer seat is annular, with the outer diameter of the right end of the spacer seat being larger than the outer diameter of the left end, and the spring is sleeved on the outer wall of the left end of the spacer seat.
[0013] The inner diameter of the spacer seat is larger than the maximum outer diameter of the one-way tooth of the connector, but smaller than the inner diameter of the spring.
[0014] Furthermore, the outer contour of the lock block is conical, and the taper of the cone is 13-16°. The lock block is composed of several locking ring pieces, and the number of the several locking ring pieces is 3-4.
[0015] Furthermore, the inner bottom surface of the mounting cavity is provided with a tapered limiting hole.
[0016] Furthermore, the pressure sleeve and the large sleeve are connected by threads.
[0017] Furthermore, the pressure sleeve is provided with a relief groove, which is used to avoid the movement of the force-applying section.
[0018] The beneficial effects of this utility model are as follows: The bidirectional cooperating connection structure of this utility model allows the large sleeve with the first steel bar head and the small sleeve with the second steel bar head to pull the steel bar heads on both sides together through the connecting component, thereby improving the connection stability between the upper and lower concrete components and avoiding the problem of the two concrete components separating from each other.
[0019] When the pressure sleeve is screwed into the mounting cavity of the large sleeve, it will cause the locking block inside its end to abut against the other end of the spacer seat. The above arrangement allows the pressure sleeve to abut against the spacer seat when it is screwed into the large sleeve, fixing the locking block between the two, so as to effectively limit the locking block in both directions and improve the stability of the locking block.
[0020] The connection between the two ends of the connector and the small sleeve and the locking block is set up by screwing the screwing section of the connector with the thread on the inner wall of the small sleeve, and then by the toothed groove structure between the connector and the locking block, that is, the one-way tooth on the outer wall of the connector passes through the pressure sleeve and engages with the toothed groove in the locking block, thereby realizing the locking between the connector and the locking block, so as to avoid the problem that two adjacent prestressed concrete components are not firmly fixed by welding and are inconvenient to disassemble;
[0021] The orientation of the one-way teeth and the inner tooth groove of the locking block can effectively limit the lower part of the one-way teeth. At the same time, in conjunction with the pressing force of the prestressed concrete component above, the connector can be effectively limited and locked. However, by slightly lifting the prestressed concrete component above, the vertical position of the entire connector can be adjusted by applying force to the force application section of the connector in either a positive or negative direction. This effectively avoids the problem of the connection between two adjacent prestressed concrete components being stuck due to the misalignment of the external thread of the connecting rod and the internal thread that mates with the connecting rod, thus preventing the adjustment of the spacing between the connectors. Moreover, during disassembly, the large sleeve and the pressure sleeve can be unscrewed to separate the large sleeve and the small sleeve, without the need to disassemble and separate each component individually. Attached Figure Description
[0022] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a cross-sectional view of a bidirectional mating connection structure of this utility model when the mating is completed;
[0024] Figure 2 This is a top view of a locking block with a bidirectional mating connection structure according to this utility model;
[0025] Figure 3 yes Figure 2 AA section view;
[0026] Figure 4 yes Figure 3 Enlarged view of A;
[0027] Figure 5 This is a schematic diagram of a connector with a bidirectional mating connection structure according to this utility model;
[0028] Figure 6 yes Figure 5 Enlarged view of B;
[0029] Figure 7 yes Figure 5 BB cross-sectional view.
[0030] In the diagram: 1-Large sleeve, 2-Small sleeve, 4-Elastic element, 5-Groove structure, 11-Mounting cavity, 12-First connecting hole, 21-Second connecting hole, 31-Spacer seat, 32-Locking block, 33-Pressure sleeve, 34-Connector head, 51-One-way tooth, 52-Groove, 111-Conical limiting hole, 321-Locking ring piece, 331-Allowing groove, 341-Tightening section, 342-Force application section, 343-Conical section, 344-Weight reduction hole. Detailed Implementation
[0031] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0032] In one specific embodiment of this utility model, such as Figures 1-7 As shown, a bidirectional mating connection structure is disclosed, including a large sleeve 1, a small sleeve 2, and a connecting assembly. The large sleeve 1 has an installation cavity 11. The end of the large sleeve 1 away from the pressure sleeve 33 has a first connecting hole 12 for connecting a first rebar head. The first connecting hole 12 communicates with the installation cavity 11, and the inner bottom surface of the installation cavity 11 has a conical limiting hole 111. The end of the small sleeve 2 away from the connector 34 has a second connecting hole 21 for connecting a second rebar head. The second connecting hole 21 communicates with the inner cavity of the small sleeve 2.
[0033] The large sleeve 1 and the small sleeve 2 are connected by a connecting assembly, which includes a spacer 31, a locking block 32, a pressure sleeve 33, and a connector 34. The spacer 31 is disposed inside the large sleeve 1, and an elastic element 4 is provided between one end of the spacer 31 and the mounting cavity 11. The locking block 32 is disposed inside the end of the pressure sleeve 33, which is detachably disposed inside the mounting cavity 11. The pressure sleeve 33 extends into the mounting cavity 11 and abuts against the other end of the spacer 31, thus confining the locking block 32 between the pressure sleeve 33 and the spacer 31. The pressure sleeve 33 is threadedly connected to the mounting cavity 11 of the large sleeve 1. When the pressure sleeve 33 is screwed into the mounting cavity 11 of the large sleeve 1, it will cause the locking block 32 inside its end to abut against the other end of the spacer seat 31. The above arrangement allows the pressure sleeve 33 to abut against the spacer seat 31 when it is screwed into the large sleeve 1, fixing the locking block 32 between the two, so as to effectively limit the locking block 32 in both directions and improve the stability of the locking block 32. One end of the connector 34 is detachably connected to the small sleeve 2, and the other end passes through the pressure sleeve 33 and engages with the locking block 32 through the toothed structure 5. In this embodiment, the external thread size of the pressure sleeve 33 is M27×2.
[0034] The bidirectional connection structure of this utility model allows the large sleeve 1 with the first rebar head and the small sleeve 2 with the second rebar head to pull the rebar heads on both sides together through the connecting component, thereby improving the connection stability between the upper and lower concrete components and avoiding the problem of the two concrete components separating from each other.
[0035] The pressure sleeve 33 is provided with a relief groove 331, which is used to avoid the movement of the force application section 342.
[0036] The toothed structure 5 includes several one-way teeth 51 and toothed grooves 52 that cooperate with the several one-way teeth 51. The several one-way teeth 51 are axially distributed on the outer wall of one end of the connector 34, and the tips of the one-way teeth 51 are set towards the small sleeve 2. The several toothed grooves 52 are opened on the inner wall of the locking block 32, and the large inner diameter end of each toothed groove 52 is set towards the small sleeve 2.
[0037] The orientation of the one-way tooth 51 and the inner tooth groove 52 of the locking block 32 can effectively limit the lower part of the one-way tooth 51. At the same time, in conjunction with the pressing force of the prestressed concrete component above, the connector 34 can be effectively limited and locked. However, by slightly lifting the prestressed concrete component above, the vertical position of the entire connector 34 can be adjusted by applying force to the force application section of the connector 34 in a positive or directional manner. This can effectively avoid the problem of the gap between the connectors being unable to be adjusted due to the misalignment of the external thread of the connecting rod and the internal thread that mates with the connecting rod when two adjacent prestressed concrete components are connected. Moreover, during disassembly, it is only necessary to unscrew the large sleeve 1 and the pressure sleeve 33 to separate the large sleeve 1 and the small sleeve 2, without having to disassemble and separate each component individually.
[0038] The outer wall of the connector 34 is provided with a screwing section 341, a force-applying section 342, and a tapered section 343 in sequence. The screwing section 341 is threaded to the inner wall of the small sleeve 2. The outer contour of the force-applying section 342 is a polygon with at least four sides. The tapered section 343 is located between the one-way tooth 51 and the force-applying section 342. The two ends of the connector 34 are respectively connected to the small sleeve 2 and the locking block 32. The screwing section of the connector 34 is screwed to the inner wall of the small sleeve 2. In this embodiment, the external thread size of the screwing section of the connector 34 is M22×2. Then, the tooth groove structure 5 between the connector 34 and the locking block 32 is used to lock the connector 34 and the locking block 32. That is, the end of the one-way tooth 51 on the outer wall of the connector 34 passes through the pressure sleeve 33 and engages with the tooth groove 52 in the locking block 32. This avoids the problem that two adjacent prestressed concrete components are not firmly fixed by welding and are inconvenient to disassemble.
[0039] The elastic element 4 is a spring; the maximum outer diameter of the one-way tooth 51 of the connector 34 is smaller than the inner diameter of the spring, and the connector 34 is provided with a weight reduction hole 344 at one end inside the small sleeve 2.
[0040] The spacer seat 31 is annular. The outer diameter of the right end of the spacer seat 31 is larger than the outer diameter of the left end. The spring is sleeved on the outer wall of the left end of the spacer seat 31. The inner diameter of the spacer seat 31 is larger than the maximum outer diameter of the one-way tooth 51 of the connector 34, but smaller than the inner diameter of the spring.
[0041] The outer contour of the locking block 32 is conical, and the taper of the cone is 13-16°. The locking block 32 is composed of several locking ring pieces 321, and the number of several locking ring pieces 321 is 3-4. In this embodiment, the taper of each locking ring piece 321 is 14°. By using the tapered engagement between the tapered surface of the locking ring piece 321 and the inner conical groove at the end of the pressure sleeve 33, the two can be in close contact. The height of the locking ring piece 321 is equal to the groove depth of the inner conical groove at the end of the pressure sleeve 33.
[0042] The working process of this utility model is as follows:
[0043] Connection process:
[0044] Place the elastic element 4 onto the outer left wall of the spacer seat 31, and insert the end of the elastic element 4 away from the spacer seat 31 into the mounting cavity 11 of the large sleeve 1, with the end face of the elastic element 4 contacting the conical surface of the conical limiting hole 111. Assemble the three locking ring pieces 321 and place the inner conical groove of the pressure sleeve 33 downwards on the outer side of the three locking ring pieces 321. Move the sleeve to a position where the bottom of the three locking ring pieces 321 can be grasped. Support the bottom of the three locking ring pieces 321 with some fingers and place other fingers against the upper part of the pressure sleeve 33. Then, place the large sleeve 1 and the pressure sleeve 33 containing the locking block 32 horizontally and align them. When the sleeve is moved to the opening of the mounting cavity 11 of the large sleeve 1, screw the pressure sleeve 33 into the large sleeve 1. Inside the mounting cavity 11, when screwed to abut against the spacer seat 31, the reverse thrust of the elastic element 4 pushes the spacer seat 31 against the locking block 32 and the pressure sleeve 33, placing the locking block 32 between the spacer seat 31 and the pressure sleeve 33. After fixing the locking block 32, screw the engagement section 341 of the connector 34 into the small sleeve 2, then extend the one-way tooth 51 end on the outer wall of the other end into the pressure sleeve 33, and press the one-way tooth 51 end of the connector 34 into the tooth groove 52 in the locking block 32. When the connector 34 is skewed or cannot enter the large sleeve 1 deeper, a special tool can be used to apply force to the force application section 342 of the connector 34, so that the connector 34 continues to enter the large sleeve 1 downwards.
[0045] After or before the connection is completed, the first connecting hole 12 of the large sleeve 1 can be connected to the first steel bar head embedded in one of the prestressed concrete components, and the second connecting hole 21 of the small sleeve 2 can be connected to the second steel bar head embedded in another prestressed concrete component, thereby realizing the connection between two adjacent prestressed concrete components.
[0046] When the connection structure needs to be disassembled, the pressure sleeve 33 only needs to be separated from the large sleeve 1 so that the elastic element 4 and the spacer seat 31 no longer abut against the locking block 32 and the pressure sleeve 33, thereby loosening the engagement between the tooth groove 52 of the locking block 32 and the one-way tooth 51 of the connector 34, thus quickly separating the two adjacent prestressed concrete components and improving the disassembly speed of the connection structure.
[0047] The above-disclosed embodiment is merely a preferred embodiment of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.
Claims
1. A bidirectional mating connection structure, characterized by, The utility model provides a sleeve assembly, including big sleeve (1), small sleeve (2) and connecting assembly, install the cavity (11) in big sleeve (1), and big sleeve (1) with small sleeve (2) are connected through connecting assembly, and connecting assembly includes spacer (31), lock block (32), press sleeve (33) and connecting head (34), the spacer (31) sets up in big sleeve (1), and its one end with install the cavity (11) between is equipped with elastic element (4), lock block (32) sets up in press sleeve (33) end portion, press sleeve (33) detachably sets up in install the cavity (11), press sleeve (33) enters into install the cavity (11) and with the other end of spacer (31) is opposite, and lock block (32) is limited between press sleeve (33) and spacer (31), Connecting head (34) one end with small sleeve (2) is detachably connected, and the other end passes through press sleeve (33) and is matched with lock block (32) through the tooth groove structure (5) between.
2. The bidirectional mating connection of claim 1, wherein, The tooth groove structure (5) includes a plurality of one-way teeth (51) and a plurality of tooth grooves (52) matched with the one-way teeth (51). The one-way teeth (51) are axially distributed on the outer wall of one end of the connecting head (34), and the tooth tips of the one-way teeth (51) are arranged towards the small sleeve (2). A plurality of tooth grooves (52) are formed on the inner wall of the lock block (32), and the large-diameter end of each tooth groove (52) is arranged towards the small sleeve (2).
3. The bidirectional mating connection of claim 2, wherein, The outer wall of the connecting head (34) is sequentially provided with a threaded segment (341), a force applying segment (342), and a tapered segment (343). The threaded segment (341) is threadedly connected with the inner wall of the small sleeve (2). The outer contour of the force applying segment (342) is a polygon, and the polygon has at least four sides. The tapered segment (343) is located between the one-way teeth (51) and the force applying segment (342).
4. The bidirectional mating connection of claim 2, wherein, The elastic element (4) is a spring. The maximum outer diameter of the one-way teeth (51) of the connecting head (34) is smaller than the inner diameter of the spring, and the one end of the connecting head (34) located in the small sleeve (2) is provided with a weight-reducing hole (344).
5. The bidirectional mating connection of claim 4, wherein, The spacer (31) is annular, the outer diameter of the right end of the spacer (31) is larger than the outer diameter of the left end, and the spring is sleeved on the outer wall of the left end of the spacer (31). The inner diameter of the spacer (31) is larger than the maximum outer diameter of the one-way teeth (51) of the connecting head (34) and smaller than the inner diameter of the spring.
6. The bidirectional mating connection of claim 1, wherein, The outer contour of the lock block (32) is tapered, and the taper of the tapered contour is 13-16°. The lock block (32) is composed of a plurality of lock ring pieces (321), and the number of the lock ring pieces (321) is 3-4.
7. The bidirectional mating connection of claim 1, wherein The inner bottom surface of the installation cavity (11) is provided with a tapered limiting hole (111).
8. The bidirectional mating connection of claim 1, wherein, The press sleeve (33) and the big sleeve (1) are connected through threads.
9. The bidirectional mating connection of claim 3, wherein, The pressing sleeve (33) is internally provided with an avoiding groove (331) for avoiding the movement of the force applying section (342).