A prefabricated concrete column connecting piece
By designing a socketing mechanism and a self-locking mechanism, the problem of low connection efficiency of precast concrete columns in existing technologies is solved, achieving fast, efficient connection and stable performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GANJIANG NEW DISTRICT URBAN CONSTR TECH CO LTD
- Filing Date
- 2025-08-29
- Publication Date
- 2026-07-28
AI Technical Summary
Existing precast concrete columns require a large number of bolts for connection, resulting in low construction efficiency.
The system employs a socketing mechanism and a self-locking mechanism, including a socketing frame, a self-locking groove, and a U-shaped block. The upper and lower columns are quickly connected through the snap-fit of the socketing and the self-locking groove. Combined with the connection of the reinforcing cage, the U-shaped block made of elastic metal material is used to achieve self-locking.
It improves the connection efficiency of precast concrete columns, ensures the strength and stability of the connection, and reduces construction time.
Smart Images
Figure CN224565417U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of precast concrete technology, and in particular to a precast concrete column connector. Background Technology
[0002] In the existing technology, when assembling precast concrete columns, a large number of bolts are required to connect the upper and lower columns, resulting in low construction efficiency. Therefore, a precast concrete column connector is proposed. Utility Model Content
[0003] To address at least one of the aforementioned technical shortcomings, this utility model provides a precast concrete column connector, comprising: an upper column, a connecting mechanism, and a lower column. The outer wall of the bottom end of the upper column and the outer wall of the top end of the lower column are both precast with precast grooves. A connecting mechanism is fitted between the bottom end of the upper column and the top end of the lower column. The connecting mechanism includes two connecting frames that respectively fit into the upper and lower columns. A partition plate is fixedly connected between the two connecting frames. Each connecting frame has a self-locking groove inside. A self-locking mechanism is provided between the self-locking grooves on all four sides of the connecting frame and the precast groove. The self-locking mechanism includes a U-shaped block made of elastic metal material. The U-shaped block is constructed with long and short ends. The long end is engaged in the self-locking groove, and the short end is engaged in the precast groove. Both the self-locking groove and the precast groove are rectangular. The upper and lower columns are equipped with steel cages. The upper and lower columns are precast concrete. The assembly end faces of the upper and lower columns are equipped with steel bar connection holes. The steel cage is made of short bars, long bars, and tie bars. The long bars of the upper and lower columns protrude from the assembly end faces. The long bars on the upper column are aligned with the steel bar connection holes on the lower column, and the long bars on the lower column are aligned with the steel bar connection holes on the upper column. Several through holes for the long bars to pass through are opened on the partition.
[0004] Furthermore, the end face of the long end is flat, and the end face of the long end engages with the self-locking groove, while the lower surface of the long end is inclined.
[0005] Furthermore, the end face of the short end is an inclined surface, the lower surface of the short end is a plane, and the lower surface of the short end is engaged with the precast groove.
[0006] Preferably, the bottom edge of the socket frame is provided with a number of drainage holes evenly distributed.
[0007] Preferably, the space between the inner wall of the socket frame and the outer walls of the upper and lower columns is filled with concrete.
[0008] Furthermore, the U-shaped block is cast from a single piece of elastic steel.
[0009] Furthermore, the connecting mechanism is integrally cast from high-strength steel.
[0010] Furthermore, both the socketing mechanism and the self-locking mechanism have an anti-corrosion layer on their surfaces.
[0011] Beneficial effects:
[0012] 1. When assembling precast concrete, the lower column needs to be poured first, and the upper column and the connecting mechanism need to be prefabricated. During assembly, the upper column is hoisted up, and the connecting frame of the connecting mechanism is placed on the top of the lower column. At the same time, the bottom of the upper column is aligned with the connecting frame of the connecting mechanism. The self-locking mechanism needs to be placed inside the four sides of the connecting frame. Under the weight of the upper column itself, the bottom of the upper column and the top of the lower column are inserted into the inside of the connecting frame. At the same time, the self-locking mechanism is compressed, and the long end and short end of the U-shaped block are respectively locked into the self-locking groove and the precast groove, thus completing the assembly and self-locking of the upper column and improving the assembly efficiency.
[0013] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Attached Figure Description
[0014] Figure 1 This is an isometric view of the entire utility model.
[0015] Figure 2 This is a cross-sectional view of the entire utility model.
[0016] Figure 3 This is an isometric view of the socketing mechanism of this utility model.
[0017] Figure 4 This is an isometric view of the upper column of this utility model.
[0018] Figure 5 This is an isometric view of the self-locking mechanism of this utility model.
[0019] Figure 6 Axonometric view of the reinforcing cage of this utility model Figure 1 .
[0020] Figure 7 This is an isometric view of the rebar connection hole of this utility model.
[0021] Figure 8 Axonometric view of the reinforcing cage of this utility model Figure 2 .
[0022] Figure 9 This is an isometric view of the through hole of this utility model.
[0023] exist Figures 1 to 9The correspondence between component names or lines and attached drawing numbers is as follows: Upper column 1, precast groove 11, steel cage 12, short bar 121, long bar 122, tie bar 123, connecting mechanism 2, connecting frame 21, self-locking groove 22, drainage hole 23, through bar hole 24, lower column 3, self-locking mechanism 4, U-shaped block 41, long end 42, short end 43, steel bar connection hole 5. Detailed Implementation
[0024] Please refer to Figures 1 to 9 ;
[0025] This embodiment provides a precast concrete column connector, including: an upper column 1, a connecting mechanism 2, and a lower column 3. The bottom outer wall of the upper column 1 and the top outer wall of the lower column 3 are both precast with precast grooves 11. A connecting mechanism 2 is sleeved between the bottom of the upper column 1 and the top of the lower column 3. The connecting mechanism 2 includes two connecting frames 21 that respectively engage with the upper column 1 and the lower column 3. A partition plate is fixedly connected between the two connecting frames 21. Each connecting frame 21 has a self-locking groove 22 inside. A self-locking mechanism 4 is provided between the self-locking grooves 22 on all four sides of the connecting frame 21 and the precast grooves 11. The self-locking mechanism 4 includes a U-shaped block 41 made of elastic metal material, with a long end 42 and a short end distributed at both ends. 43. The end of the long end 42 is engaged inside the self-locking groove 22, and the end of the short end 43 is engaged inside the precast groove 11. Both the self-locking groove 22 and the precast groove 11 are rectangular grooves. The upper column 1 and the lower column 3 are both equipped with a steel cage 12. The upper column 1 and the lower column 3 are precast concrete. The assembly end face of the upper column 1 and the lower column 3 is equipped with a steel bar connection hole 5. The steel cage 12 is made of short bars 121, long bars 122 and tie bars 123. The long bars 122 of the upper column 1 and the lower column 3 both pass through the assembly end face, and the long bars 122 on the upper column 1 are aligned with the steel bar connection hole 5 on the lower column 3. The long bars 122 on the lower column 3 are aligned with the steel bar connection hole 5 on the upper column 1. Several through holes 24 for passing through the long bars 122 are opened on the partition.
[0026] Specific embodiment: When assembling precast concrete, the lower column 3 needs to be poured first, and the upper column 1 and the connecting mechanism 2 need to be prefabricated. During assembly, the upper column 1 is hoisted up, and the connecting frame 21 of the connecting mechanism 2 is placed on the top of the lower column 3. At the same time, the bottom end of the upper column 1 is aligned with the connecting frame 21 of the connecting mechanism 2. Meanwhile, the self-locking mechanism 4 needs to be placed inside the four sides of the connecting frame 21. Under the weight of the upper column 1 itself, the bottom end of the upper column 1 and the top end of the lower column 3 are inserted into the inside of the connecting frame 21. At the same time, the self-locking mechanism 4 is pressed, so that the long end 42 and the short end 43 of the U-shaped block 41 are respectively locked into the self-locking groove 22 and the prefabricated groove 11, completing the assembly and self-locking of the upper column 1 and improving the assembly efficiency.
[0027] During assembly, the long reinforcing bars 122 on the upper column 1 pass through the reinforcing bar through holes 24 and are inserted into the reinforcing bar connection holes 5 of the lower column 3, connecting the reinforcing bar cage 12 of the upper column 1 to the lower column 3, making the whole structure more robust. Similarly, the long reinforcing bars 122 on the lower column 3 pass through the reinforcing bar through holes 24 and are inserted into the reinforcing bar connection holes 5 of the upper column 1, connecting the reinforcing bar cage 12 of the lower column 3 to the upper column 1, making the whole structure more robust.
[0028] Before assembly, concrete grout can be injected into the rebar connection hole 5. After the concrete grout solidifies, the long rebar 122 can be solidified with the rebar connection hole 5 as one unit. Then, double fixation is achieved through the sleeve mechanism 2 and the self-locking mechanism 4, making the whole very strong.
[0029] When installing the self-locking mechanism 4, the long end 42 needs to be aligned with the precast groove 11.
[0030] Under the weight of the upper column 1, the U-shaped block 41 is pressed towards the middle, causing the short end 43 to engage in the self-locking groove 22 to complete the assembly and self-locking of the upper column 1 and the lower column 3.
[0031] Furthermore, the end face of the long end 42 is flat, and the end face of the long end 42 is engaged with the self-locking groove 22. The lower surface of the long end 42 is an inclined surface.
[0032] Specific embodiment: The end face of the long end 42 is a plane, so that the end face of the long end 42 and the self-locking groove 22 can form a support mechanism. The lower surface of the long end 42 is an inclined surface, so that when the inclined surface is placed, it can push the lower edge of the self-locking groove 22.
[0033] Furthermore, the end face of the short end 43 is an inclined surface, the lower surface of the short end 43 is a plane, and the lower surface of the short end 43 is engaged with the precast groove 11.
[0034] Specific embodiment: The lower surface of the short end 43 is a plane. The lower surface of the short end 43 is engaged with the prefabricated groove 11. After the assembly is completed, the lower surface of the short end 43 abuts against the lower surface of the prefabricated groove 11, so that the short end 43 and the prefabricated groove 11 form a barb-like structure, so that the whole can be self-locked and cannot be easily disassembled. The end face of the short end 43 is an inclined surface, so that the bottom edge of the upper column 1 will push the end face of the short end 43 to be an inclined surface, so that the short end 43 is compressed towards the middle of the U-shaped block 41.
[0035] Preferably, the bottom edge of the socket frame 21 is provided with a plurality of drainage holes 23 evenly distributed.
[0036] Specific implementation: Avoid the accumulation of rainwater inside the socket frame 21 to reduce the possibility of rainwater corrosion.
[0037] Preferably, the inner wall of the socket frame 21 is filled with concrete between the outer walls of the upper column 1 and the lower column 3.
[0038] In practice, concrete can be selectively injected into the gaps between the assembled upper column 1 and lower column 3 and the connecting frame 21 to reinforce them.
[0039] Furthermore, the U-shaped block 41 is integrally cast from elastic steel.
[0040] Specific implementation: Elastic steel: 65 steel or 70 steel.
[0041] Furthermore, the connecting mechanism 2 is integrally cast from high-strength steel.
[0042] Specific example: High-strength steel: S960 steel.
[0043] Furthermore, both the socketing mechanism 2 and the self-locking mechanism 4 have anti-corrosion layers on their surfaces.
[0044] Specific implementation: Corrosion protection is achieved through an anti-corrosion layer, which should be applied after self-locking is completed.
[0045] It also includes an inflatable bladder and an air pump for positioning.
[0046] During positioning, the airbag is inserted into the gap between the inner wall of the sleeve frame 21 and the outer wall of the upper column 1 or the lower column 3, and the airbag is inflated by the air pump to position the upper column 1 and the lower column 3.
Claims
1. A precast concrete column connector, comprising: The upper column (1), the sleeve mechanism (2), and the lower column (3) are characterized in that: the bottom outer wall of the upper column (1) and the top outer wall of the lower column (3) are both prefabricated with prefabricated grooves (11); the sleeve mechanism (2) is sleeved between the bottom end of the upper column (1) and the top end of the lower column (3); the sleeve mechanism (2) includes two sleeve frames (21) that are respectively sleeved with the upper column (1) and the lower column (3); and a fixed connection is provided between the two sleeve frames (21). The partition is connected as a whole. The inside of the socket frame (21) is provided with self-locking grooves (22). The self-locking mechanism (4) is provided between the self-locking grooves (22) and the prefabricated grooves (11) on the four sides of the socket frame (21). The self-locking mechanism (4) includes a U-shaped block (41). The U-shaped block (41) is made of elastic metal material. The two ends of the U-shaped block (41) are a long end (42) and a short end (43). The end of the long end (42) is engaged with the end of the socket frame (21). Inside the self-locking groove (22), the end of the short end (43) is engaged inside the precast groove (11). Both the self-locking groove (22) and the precast groove (11) are rectangular grooves. The upper column (1) and the lower column (3) are both equipped with steel cages (12). The upper column (1) and the lower column (3) are precast concrete. The assembly end faces of the upper column (1) and the lower column (3) are equipped with steel bar connection holes (5). The steel cage (12) includes short bars (12). 1) The long bar (122) and tie bar (123) are made. The long bar (122) of the upper column (1) and the lower column (3) both pass through the assembly end face. The long bar (122) on the upper column (1) is aligned with the steel bar connection hole (5) on the lower column (3). The long bar (122) on the lower column (3) is aligned with the steel bar connection hole (5) on the upper column (1). Several through holes (24) for passing through the long bar (122) are provided on the partition.
2. The precast concrete column connector according to claim 1, characterized in that: The end face of the long end (42) is a plane, and the end face of the long end (42) is engaged with the self-locking groove (22). The lower surface of the long end (42) is an inclined surface.
3. A prefabricated concrete column connector according to claim 2, characterized in that: The end face of the short end (43) is an inclined surface, the lower surface of the short end (43) is a plane, and the lower surface of the short end (43) is engaged with the precast groove (11).
4. A prefabricated concrete column connector according to claim 3, characterized in that: Several drainage holes (23) are evenly provided on the bottom edge of the socket frame (21).
5. A prefabricated concrete column connector according to claim 3, characterized in that: The space between the inner wall of the socket frame (21) and the outer walls of the upper column (1) and the lower column (3) is filled with concrete.
6. A prefabricated concrete column connector according to claim 4 or 5, characterized in that: The U-shaped block (41) is integrally cast from elastic steel.
7. A prefabricated concrete column connector according to claim 6, characterized in that: The socket mechanism (2) is integrally cast from high-strength steel.
8. A prefabricated concrete column connector according to claim 7, characterized in that: The surfaces of both the socketing mechanism (2) and the self-locking mechanism (4) are provided with an anti-corrosion layer.