Reinforcing steel bar difference elimination dry type connecting structure for precast concrete member
Through the dry connection structure, the threaded connection between the connecting sleeve and the sealing nut is solved, and the problem of low connection efficiency of the steel bars of precast concrete components is achieved, efficient and wet-free steel bars are connected, and positioning errors are eliminated.
Patent Information
- Application Number
- CN202422373877.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-18
- Estimated Expiration
- 2034-09-27
AI Technical Summary
The existing precast concrete component reinforcement connection technology has problems such as low construction efficiency, wet work, and difficult to detect grouting quality, which limits its application.
It adopts a dry connection structure, including a connecting sleeve, a connecting block and a sealing nut, to achieve efficient connection of steel bars through threaded connections, eliminate positioning errors and avoid wet operations.
It improves construction efficiency, realizes efficient connection of on-site steel bars, eliminates steel bar positioning errors, and simplifies the construction process.
Smart Images
Figure CN223119361U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of precast concrete components, and particularly relates to a dry connection structure for eliminating errors of steel bars used in precast concrete components. Background Art
[0002] The pain points and difficulties in the popularization and application of precast concrete components lie in the on-site connection of steel bars. At present, the commonly used technology for on-site connection of steel bars in precast concrete components is grouting sleeve connection. The grouting sleeve connection has the advantage of large construction tolerance, but it requires on-site grouting wet operation, with low connection efficiency, and it is difficult to detect the grouting quality inside the grouting sleeve, which limits the application of this connection method. Subsequently, the engineering community has developed new connection technologies such as corrugated pipe grout anchor lap joint and double-screw sleeve steel bar connection, but they all have problems such as either requiring wet operation or poor construction tolerance, resulting in low construction efficiency and low on-site steel bar connection efficiency. Summary of the Utility Model
[0003] The purpose of the utility model is to provide a dry connection structure for eliminating errors of steel bars used in precast concrete components. This structure is a dry connection, which improves construction efficiency and can achieve efficient connection of on-site steel bars.
[0004] To achieve the above purpose, the dry connection structure for eliminating errors of steel bars used in precast concrete components of the utility model includes the first steel bar of the first precast concrete component, the second steel bar of the second precast concrete component, a connecting sleeve, a connecting block and a sealing nut; the first steel bar and the second steel bar are arranged opposite to each other, and external threads are provided at the ends of the first steel bar and the second steel bar; the connecting sleeve is a hollow pipe, with a small threaded hole at one end and a large threaded hole at the other end; the external threaded end of the first steel bar is tightly screwed into the small threaded hole; a threaded hole is provided at the center of the connecting block; a through hole is provided at the center of the sealing nut, and the diameter of the through hole is larger than the diameter of the second steel bar; the sealing nut is divided into an external threaded section and a nut section; the external threaded section matches the large threaded hole; the second steel bar tightly screws the external threaded end into the threaded hole of the connecting block through the through hole at the center of the sealing nut; the connecting block extends into the connecting sleeve from the large threaded hole end, and the sealing nut is screwed into the large threaded hole and presses against the connecting block.
[0005] As a further scheme of the utility model: the outer diameter of the connecting block is smaller than the diameter of the large threaded hole.
[0006] As a further scheme of the utility model: the connecting block is frustum-shaped or cylindrical; a non-threaded tapered hole or a straight through hole is provided between the small threaded hole and the large threaded hole of the connecting sleeve, and the non-threaded tapered hole matches the angle of the frustum-shaped table surface.
[0007] As a further solution of the utility model: the nut section of the sealing nut is a cylinder or a pyramid, and the outer diameter of the cylinder or the diameter of the circumscribed circle of the pyramid is greater than the diameter of the large threaded hole of the connecting sleeve.
[0008] As a further solution of the utility model: the outer diameter of the connecting block is 3 mm or 4 mm smaller than the diameter of the large threaded hole.
[0009] Compared with the prior art, the beneficial effects of the utility model are as follows: the on-site dry connection of the precast reinforced concrete steel bars can be realized through the connecting sleeve, the connecting block and the sealing nut, and there is no wet operation during the assembly process, improving the construction efficiency; by adjusting the distance between the connecting block and the large threaded hole of the connecting sleeve, the steel bar positioning error of the precast reinforced concrete can be eliminated, and the efficient connection of the on-site steel bars can be realized. Description of the Drawings
[0010] Figure 1 It is a schematic cross-sectional view of the steel bar error elimination dry connection structure with a connecting sleeve without a threaded tapered hole of the utility model.
[0011] Figure 2 It is a schematic cross-sectional view of the connecting sleeve structure with an integral non-threaded tapered hole of the utility model.
[0012] Figure 3 It is a schematic cross-sectional view of the frustum-shaped connecting block of the utility model.
[0013] Figure 4 It is a schematic cross-sectional view of the sealing nut structure of the utility model.
[0014] Figure 5 It is a schematic cross-sectional view of the steel bar error elimination dry connection structure with a connecting sleeve with a straight through hole of the utility model.
[0015] Figure 6 It is a schematic cross-sectional view of the connecting sleeve with a straight through hole of the utility model.
[0016] Figure 7 It is a schematic cross-sectional view of the cylindrical connecting block of the utility model.
[0017] In the figure: 1, the first steel bar; 2, the second steel bar; 3, the connecting sleeve; 4, the connecting block; 5, the sealing nut; 31, the small threaded hole; 32, the large threaded hole; 33, the non-threaded tapered hole; 34, the straight through hole; 51, the through hole; 52, the external thread section; 53, the nut section. Detailed Embodiments
[0018] The following further illustrates the utility model with reference to the drawings.
[0019] As Figures 1 to 4As shown in the figure, the steel bar error-eliminating dry connection structure with a threadless tapered hole connecting sleeve includes the first steel bar 1 of the first precast concrete member, the second steel bar 2 of the second precast concrete member, the connecting sleeve 3, the connecting block 4 and the sealing nut 5. The first steel bar 1 of the first precast concrete member and the second steel bar 2 of the second precast concrete member are arranged opposite to each other, and the ends of the first steel bar 1 and the second steel bar 2 are provided with external threads; the connecting sleeve 3 is a hollow tube, one end is a small threaded hole 31, and the other end is a large threaded hole 32. A threadless tapered hole 33 is provided between the small threaded hole 31 and the large threaded hole 32 of the connecting sleeve 3; the externally threaded end of the first steel bar 1 is tightly screwed into the small threaded hole 31 of the connecting sleeve 3; the connecting block 4 is frustum-shaped, and an internal threaded hole is provided in the center thereof. The outer diameter of the connecting block 4 is 4 mm smaller than the diameter of the large threaded hole 32 of the connecting sleeve 3; a through hole 51 is provided in the center of the sealing nut 5, and the diameter of the through hole 51 is larger than the diameter of the second steel bar 2; the sealing nut 5 is divided into an external thread section 52 and a nut section 53; the external thread section 52 of the sealing nut 5 matches the large threaded hole 32 of the connected connecting sleeve 3, and the nut section 53 of the sealing nut 5 is a cylinder, and the outer diameter of the cylinder is larger than the diameter of the large threaded hole 33 of the connecting sleeve 3; the second steel bar 2 tightly screws the externally threaded end into the threaded hole of the connecting block 4 through the central through hole 51 of the sealing nut 5; the connecting block 4 extends into the connecting sleeve 3 from the large threaded hole 32 end, and the sealing nut 5 is screwed into the large threaded hole 32 of the connecting sleeve 3 and presses against the connecting block 4.
[0020] As Figures 5 to 7 shown in the figure, the steel bar error-eliminating dry connection structure with a straight through hole connecting sleeve includes the first steel bar 1 of the first precast concrete member, the second steel bar 2 of the second precast concrete member, the connecting sleeve 3, the connecting block 4 and the sealing nut 5. The first steel bar 1 of the first precast concrete member and the second steel bar 2 of the second precast concrete member are arranged opposite to each other, and the ends of the first steel bar 1 and the second steel bar 2 are provided with external threads; the connecting sleeve 3 is a hollow tube, one end is a small threaded hole 31, and the other end is a large threaded hole 32. A straight through hole 34 is provided between the small threaded hole 31 and the large threaded hole 32 of the connecting sleeve 3; the externally threaded end of the first steel bar 1 is tightly screwed into the small threaded hole 31 of the connecting sleeve 3; the connecting block 4 is cylindrical, and an internal threaded hole is provided in the center thereof. The outer diameter of the connecting block 4 is 3 mm smaller than the diameter of the large threaded hole of the connecting sleeve 3; a through hole 51 is provided in the center of the sealing nut 5, and the diameter of the through hole 51 is larger than the diameter of the second steel bar; the sealing nut 5 is divided into an external thread section 52 and a nut section 53; the external thread section 52 of the sealing nut 5 matches the large threaded hole 32 of the connected connecting sleeve 3, and the nut section 53 of the sealing nut 5 is a multi-pyramid, and the outer diameter of the multi-pyramid is larger than the diameter of the large threaded hole 32 of the connecting sleeve 3; the second steel bar tightly screws the externally threaded end into the hole of the connecting block 4 through the central through hole 51 of the sealing nut hole 5; the connecting block 4 extends into the connecting sleeve 3 from the large threaded hole 32 end, and the sealing nut 5 is screwed into the large threaded hole 32 of the connecting sleeve 3 and presses against the connecting block 4.
[0021] The utility model can realize the on-site dry connection of the steel bars of precast reinforced concrete through a connecting sleeve, a connecting fastener and a sealing nut. There is no wet operation during the assembly process, which improves the construction efficiency. By adjusting the distance between the connecting block and the large threaded hole of the connecting sleeve, the steel bar positioning error of the precast reinforced concrete can be eliminated, and the efficient connection of the on-site steel bars can be realized.
Claims
1. Reinforcement error elimination dry connection structure for precast concrete components, including the first reinforcement bar (1) of the first precast concrete component and the second reinforcement bar (2) of the second precast concrete component, characterized in that, It also includes a connecting sleeve (3), a connecting block (4) and a sealing nut (5); the first steel bar (1) and the second steel bar (2) are arranged oppositely, and external threads are provided at the ends of the first steel bar (1) and the second steel bar (2); the connecting sleeve (3) is a hollow tube, one end of which is a small threaded hole (31) and the other end is a large threaded hole (32); the external threaded end of the first steel bar (1) is tightly screwed into the small threaded hole (31); a threaded hole is provided at the center of the connecting block (4); a through hole (51) is provided at the center of the sealing nut (5), and the diameter of the through hole (51) is larger than the diameter of the second steel bar (2); the sealing nut (5) is divided into an external threaded section (52) and a nut section (53); the external threaded section (52) matches the large threaded hole (32); the external threaded end of the second steel bar (2) is tightly screwed into the threaded hole of the connecting block (4) through the through hole (51) at the center of the sealing nut (5); the connecting block (4) extends into the connecting sleeve (3) from the large threaded hole (32) end, and the sealing nut (5) is screwed into the large threaded hole (32) and presses against the connecting block (4).
2. The steel bar elimination dry connection structure for precast concrete components according to claim 1, characterized in that The outer diameter of the connecting block (4) is smaller than the diameter of the large threaded hole (32).
3. The steel bar elimination dry connection structure for precast concrete components according to claim 1, characterized in that, The connecting block (4) is frustum-shaped or cylindrical; an unthreaded tapered hole (33) or a straight through hole (34) is provided between the small threaded hole (31) and the large threaded hole (32), and the unthreaded tapered hole (33) matches the table surface angle of the frustum shape.
4. The steel bar error-eliminating dry connection structure for precast concrete components according to claim 1, wherein The nut section (53) is a cylinder or a pyramid, and the outer diameter of the cylinder or the circumscribed circle diameter of the pyramid is larger than the diameter of the large threaded hole (32).
5. The steel bar elimination dry connection structure for precast concrete components according to claim 2, characterized in that, The outer diameter of the connecting block (4) is 3 mm or 4 mm smaller than the diameter of the large threaded hole (32).