A bidirectional tightly-spliced assembled laminated slab structure

Abstract

This invention relates to the field of composite slab technology, specifically to a bidirectional tightly connected prefabricated composite slab structure, comprising two prefabricated composite slab bodies. Each prefabricated composite slab body has a splicing groove 1 and a splicing groove 2 on its two sides. The two prefabricated composite slab bodies are spliced ​​together via splicing groove 1 and splicing groove 2. Each prefabricated composite slab body has notches at both ends on the side where splicing groove 1 is located. A metal block is installed inside the notch, and the surface of the metal block has an installation groove 2. The beneficial effects are: through the upper and lower alignment and interlocking design of splicing groove 1 and splicing groove 2, combined with the rigid fixation of the metal block within the notch, misalignment-free positioning can be achieved during the pre-splicing stage, allowing the upper and lower sides of the splice seam to simultaneously form an interlocking constraint, significantly improving the shear resistance of the node foundation. Subsequently, the screw and threaded drive of the threaded rod drive the push block to move, allowing the insert to be pushed into the metal sleeve of the other composite slab to complete rigid locking. On-site assembly can be completed without large machinery.

Description

Technical Field

[0001] This invention relates to the field of composite panel technology, specifically to a bidirectional tightly connected assembled composite panel structure. Background Technology

[0002] In the current field of prefabricated buildings, the splicing and connection of composite slabs generally adopts on-site post-cast concrete, exposed welding, or external bolt locking construction methods. These traditional connection processes are not only complicated on-site operations and require a lot of wet work time, but also the construction efficiency is difficult to meet the requirements of rapid assembly of prefabricated buildings. In addition, there is a common problem of insufficient fitting of splicing nodes. The shear strength of the splicing joint is prone to be weak. After long-term exposure to building structure vibration and repeated loads, the splicing position is prone to misalignment and cracking.

[0003] Meanwhile, most existing connection structures have exposed and protruding connectors, which are prone to collisions and corrosion during subsequent construction and make it difficult to achieve a two-way tight splicing effect between composite plates. Some detachable connection structures also have the defect that threaded connectors are easily loosened by external force and vibration. The reliability of the nodes in long-term use cannot be guaranteed, and it is impossible to simultaneously take into account the ease of assembly, the strength of the node structure, and the needs of later maintenance and disassembly. Summary of the Invention

[0004] The purpose of this invention is to provide a bidirectional tightly connected prefabricated composite panel structure to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a bidirectional closely connected prefabricated composite panel structure, comprising two prefabricated composite panel bodies, wherein a splicing groove one and a splicing groove two are respectively provided on both sides of the prefabricated composite panel bodies, the two prefabricated composite panel bodies are spliced ​​together through splicing groove one and splicing groove two, and notches are provided at both ends of the prefabricated composite panel bodies on the side where splicing groove one is located, and a metal block is installed inside the notch, and an installation groove two is provided on the surface of the metal block, and a plug handle is inserted into the upper and lower sides of the installation groove two, after the two prefabricated composite panel bodies are spliced ​​together, a push block is inserted into the installation groove two, and the push block pushes the two plug handles to be inserted into the splicing groove two on the surface of the other prefabricated composite panel body.

[0006] Preferably, there are two splicing grooves, which are respectively located on the top and bottom surfaces of the bottom plate of the prefabricated composite panel body. The distance between the two splicing grooves is equal to the height of the splicing groove. The prefabricated composite panel body has notches at both the front and rear ends on the side closest to the splicing groove. The notches are U-shaped plate structures, and the metal blocks are U-shaped blocks with grooves fitted into the notches.

[0007] Preferably, the top and bottom surfaces of the metal block are provided with reserved grooves, and the surfaces of the reserved grooves and the missing grooves are provided with multiple bolt holes. The same set of bolts are inserted into the bolt holes on the surfaces of the reserved grooves and the missing grooves, and the height of the metal block is equal to the height of the splicing groove two.

[0008] Preferably, the surface of the metal block is provided with a first mounting groove, the first mounting groove and the second mounting groove are connected, a threaded sleeve is fixed inside the first mounting groove, a screw is screwed inside the threaded sleeve, and one end of the push block is fixed to one end of the screw.

[0009] Preferably, one end of the threaded sleeve is fixed with two elastic hanging pieces, which are symmetrically distributed about the threaded sleeve. The elastic hanging pieces are arc plates with an "L"-shaped end face. The end of the elastic hanging piece away from the threaded sleeve is provided with a slope, and the distance between one end of the elastic hanging piece and the threaded sleeve is greater than the plate thickness provided at the end of the screw.

[0010] Preferably, the top and bottom surfaces of the second mounting groove are provided with through openings, the plug is inserted into the through openings, one end of the plug extending into the second mounting groove is provided with an inclined surface, the top and bottom surfaces of the metal block are provided with embedding grooves, a rubber strip is fixed between the two parallel sidewalls of the embedding groove, the rubber strip covers the through openings, and the other end of the plug is fixed to the surface of the rubber strip.

[0011] Preferably, a rubber pad is fixed inside the second mounting groove. After the pusher pushes the two insert handles to stretch the rubber strip and deforms, the pusher squeezes the rubber pad to undergo elastic deformation.

[0012] Preferably, the top and bottom surfaces of the splicing groove two are provided with reserved holes, which are T-shaped grooves. A metal sleeve is inserted into the bottom of the reserved hole, and a connecting piece is fixed to one end of the metal sleeve. One end of the connecting piece is inserted into the reserved hole. After the two prefabricated composite plate bodies are spliced, the push block pushes the plug handles at both ends of one prefabricated composite plate body into the metal sleeves at both ends of the other prefabricated composite plate body.

[0013] Compared with the prior art, the beneficial effects of the present invention are: The prefabricated composite plate structure with bidirectional close-fitting connection proposed in this invention achieves misalignment-free positioning during the pre-assembly stage through the upper and lower alignment and interlocking design of splicing groove one and splicing groove two, combined with the rigid fixation of the metal block within the groove. This allows for simultaneous interlocking constraints on both the upper and lower sides of the splice seam, significantly improving the shear resistance of the node foundation. Subsequently, the screw and threaded drive of the screw rod drive the displacement of the push block, which pushes the insert into the metal sleeve of another composite plate to complete rigid locking. On-site assembly can be completed without large machinery. At the same time, the elastic hanging plate restricts the plate at the end of the screw rod. The elastic clamping action of the rubber pads achieves a double anti-loosening effect for the threaded connection. Combined with the structure design of the rubber belt driving the plug handle to automatically reset, it ensures the vibration resistance and anti-loosening reliability of the splicing node for long-term use and avoids the cracking of the concrete edge due to impact. At the same time, it also takes into account the repeated disassembly and assembly performance of the structure. Finally, it forms a two-way close splicing node without exposed protruding components. It effectively solves the problems of wet operation, weak splicing strength, and easy loosening and corrosion of connectors in the traditional composite slab connection process, and greatly improves the assembly efficiency and long-term structural durability of prefabricated composite slabs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point B; Figure 3 for Figure 1 Sectional view of the structure at point AA; Figure 4 for Figure 3 Enlarged schematic diagram of the structure at point C; Figure 5 This is a schematic diagram of the metal block structure of the present invention; Figure 6 This is a schematic diagram of the connection structure between the screw and the push block of the present invention; Figure 7 This is a schematic diagram of the connection structure between the two assembled composite plate bodies of the present invention; Figure 8 for Figure 7 Enlarged schematic diagram of the structure at point E in the middle; Figure 9 for Figure 7 Sectional view of the structure at point DD; Figure 10 for Figure 9 Enlarged schematic diagram of the structure at point F.

[0015] In the diagram: 1. Prefabricated composite panel body, 101. Splicing groove 102. Nozzle 103. Reserved hole 104. Metal block 2. Reserved groove 201. Bolt hole 202. Bolt 203. Mounting groove 1 204. Mounting groove 2 205. Embedding groove 206. Through hole 207. Insert handle 208. Rubber strip 209. Rubber pad 210. Threaded sleeve 3. Screw 301. Push block 302. Elastic hanging piece 303. Metal sleeve 4. Connecting piece 401. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of the present invention clear and complete, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of the present invention, and are merely illustrative of the embodiments of the present invention. They are not intended to limit the embodiments of the present invention. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0017] Please see Figures 1 to 10 This invention provides a technical solution: a bidirectional closely connected prefabricated composite panel structure, the main body comprising two prefabricated composite panel bodies 1, each prefabricated composite panel body 1 having a splicing groove 101 and a splicing groove 102 respectively on both sides, the two prefabricated composite panel bodies 1 completing the splicing alignment through the splicing groove 101 and splicing groove 102. There are two splicing grooves 101, located on the top and bottom surfaces of the bottom plate of the prefabricated composite panel body 1 respectively, the distance between the two splicing grooves 101 equal to the height of the splicing groove 102. This size matching design allows the splicing groove 102 to fit precisely into the gap between the two splicing grooves 101, avoiding misalignment during the splicing process, and simultaneously forming a fitting constraint on the upper and lower sides of the splicing seam, initially improving the shear resistance of the splicing node. The prefabricated composite slab body 1 has notches 103 at both the front and rear ends on the side near the splicing groove 101. The notches 103 are U-shaped plate structures. The matching metal block 2 is also U-shaped. The groove of the metal block 2 is directly fitted into the notch 103 to complete the pre-positioning installation. The top and bottom surfaces of the metal block 2 have reserved grooves 201. The surfaces of the reserved grooves 201 and notches 103 have multiple bolt holes 202. The same set of bolts 203 are inserted into the bolt holes 202 on the surfaces of the reserved grooves 201 and notches 103. The bolts 203 are used to rigidly fix the metal block 2 to the composite slab body 1. At the same time, the height of the metal block 2 is equal to the height of the splicing groove 102. After the two composite slabs are pre-spliced, the metal block 2 can be precisely embedded into the splicing groove 102 of the other composite slab, so that the splicing position forms a continuous metal force transmission path, further strengthening the strength of the node structure.

[0018] The prefabricated composite panel body 1 has notches 103 at both ends on the side where the splicing groove 101 is located. A metal block 2 is installed inside the notch 103. The surface of the metal block 2 has a second mounting groove 205. Insert handles 208 are inserted into the upper and lower sides of the second mounting groove 205. After the two prefabricated composite panel bodies 1 are spliced, a push block 302 is inserted into the second mounting groove 205. The push block 302 pushes the two insert handles 208 to be inserted into the splicing groove 102 on the surface of the other prefabricated composite panel body 1, thereby achieving lateral locking and fixing of the two composite panels. The surface of the metal block 2 is provided with a first mounting groove 204, which is connected to the second mounting groove 205. A threaded sleeve 3 is fixed inside the first mounting groove 204, and a screw rod 301 is screwed inside the threaded sleeve 3. One end of the push block 302 is fixed to one end of the screw rod 301. Through the threaded transmission between the screw rod 301 and the threaded sleeve 3, the push block 302 can be driven to move smoothly, and the on-site splicing operation can be completed without large machinery. Two elastic hanging plates 303 are fixed to one end of the thread sleeve 3. The two elastic hanging plates 303 are symmetrically distributed about the thread sleeve 3. The elastic hanging plates 303 are arc plates with an "L"-shaped end face. The end of the elastic hanging plate 303 away from the thread sleeve 3 is provided with a slope. The distance between one end of the elastic hanging plate 303 and the thread sleeve 3 is greater than the thickness of the plate provided at the end of the screw 301. During the screw 301 screwing in, the end plate can squeeze the elastic hanging plate 303 along the slope and finally get stuck in the gap between the elastic hanging plate 303 and the thread sleeve 3, so as to achieve the initial anti-disengagement limit of the screw 301.

[0019] The top and bottom surfaces of mounting slot 205 are both provided with through openings 207. The insertion handle 208 is inserted into the through opening 207. The end of the insertion handle 208 extending into mounting slot 205 has a bevel. When the push block 302 moves, the horizontal pushing force can be converted into the vertical extension force of the insertion handle 208 through the bevel, making the movement of the insertion handle smoother. The top and bottom surfaces of metal block 2 are both provided with fitting slots 206. A rubber strip 209 is fixed between the two parallel sidewalls of the fitting slot 206. The rubber strip 209 covers the through opening 207. The other end of the insertion handle 208 is fixed to the surface of the rubber strip 209. When the insertion handle 208 is pushed out by the push block 302, the rubber strip 209 will be stretched simultaneously to produce elastic deformation. When disassembling later, the retraction force of the rubber strip 209 can drive the insertion handle 208 to automatically reset, improving the disassembly and assembly performance of the structure. A rubber pad 210 is fixed inside the second mounting slot 205. After the push block 302 pushes the two inserts 208 to stretch the rubber strip 209 and deforms, the push block 302 squeezes the rubber pad 210 and causes elastic deformation. The elastic reaction force of the rubber pad 210 can continuously tighten the push block 302, eliminating the small gaps in the threaded fit and further preventing the screw 301 from loosening due to vibration. The top and bottom surfaces of the second splicing slot 102 are provided with reserved holes 104. The reserved holes 104 are T-shaped grooves. A metal sleeve 4 is inserted into the bottom of the reserved hole 104. A connecting piece 401 is fixed to one end of the metal sleeve 4. One end of the connecting piece 401 is inserted into the reserved hole 104, which can prevent the metal sleeve 4 from coming out of the reserved hole 104. At the same time, the metal sleeve 4 can withstand the repeated impact of the inserts 208 and prevent the edge of the composite slab concrete from cracking. After the two prefabricated composite plate bodies 1 are spliced ​​together, the pusher block 302 pushes the insert handles 208 at both ends of one prefabricated composite plate body 1 into the metal sleeves 4 at both ends of the other prefabricated composite plate body 1, forming a rigid insertion locking structure.

[0020] During on-site assembly, the two metal blocks 2 are pre-connected end to end through splicing groove 101 and splicing groove 202. Then, the screw 301 is turned to drive the push block 302 to push the corresponding two inserts 208 outward. The inserts 208 stretch the rubber strip 209 and insert into the corresponding metal sleeve 4, completing the rigid connection of the two prefabricated composite plate bodies 1. At this time, the plate at the end of the screw 301 is pulled and limited by the elastic hanging piece 303. At the same time, the push block 302 squeezes the rubber pad 210 and deforms. Under the dual action, the screw 301 and the threaded sleeve 3 are prevented from coming loose and limited. Finally, a two-way close splicing node without exposed protruding components is formed, which takes into account both construction convenience and structural reliability for long-term use.

[0021] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A prefabricated composite panel structure with bidirectional close-fitting connection, comprising two prefabricated composite panel bodies (1), characterized in that: The prefabricated composite panel body (1) has splicing groove 1 (101) and splicing groove 2 (102) on both sides respectively. The two prefabricated composite panel bodies (1) are spliced ​​together by splicing groove 1 (101) and splicing groove 2 (102). The prefabricated composite panel body (1) has notches (103) at both ends on the side where splicing groove 1 (101) is located. A metal block (2) is installed inside the notch (103). The surface of the metal block (2) has an installation groove 2 (205). The upper and lower sides of the installation groove 2 (205) are inserted with plug handles (208). After the two prefabricated composite panel bodies (1) are spliced ​​together, a push block (302) is inserted inside the installation groove 2 (205). The push block (302) pushes the two plug handles (208) to be inserted into the splicing groove 2 (102) on the surface of the other prefabricated composite panel body (1).

2. The prefabricated composite slab structure with bidirectional close-fitting connection according to claim 1, characterized in that: There are two splicing grooves (101). The two splicing grooves (101) are respectively located on the top and bottom surfaces of the bottom plate of the prefabricated composite panel body (1). The distance between the two splicing grooves (101) is equal to the height of the splicing groove (102). The prefabricated composite panel body (1) has notches (103) at both the front and rear ends on the side close to the splicing groove (101). The notches (103) are in the shape of a U-shaped plate. The metal block (2) is in the shape of a U-shaped block. The groove of the metal block (2) is fitted into the notch (103).

3. The prefabricated composite slab structure with bidirectional close-fitting connection according to claim 2, characterized in that: The top and bottom surfaces of the metal block (2) are provided with reserved grooves (201), and the surfaces of the reserved grooves (201) and the notched grooves (103) are provided with multiple bolt holes (202). The same set of bolts (203) are inserted into the bolt holes (202) on the surfaces of the reserved grooves (201) and the notched grooves (103). The height of the metal block (2) is equal to the height of the splicing groove (102).

4. The prefabricated composite slab structure with bidirectional close-fitting connection according to claim 1, characterized in that: The surface of the metal block (2) is provided with a first mounting groove (204), which is connected to the second mounting groove (205). A threaded sleeve (3) is fixed inside the first mounting groove (204), and a screw rod (301) is screwed inside the threaded sleeve (3). One end of the push block (302) is fixed to one end of the screw rod (301).

5. The prefabricated composite slab structure with bidirectional close-fitting connection according to claim 4, characterized in that: Two elastic tabs (303) are fixed at one end of the thread sleeve (3). The two elastic tabs (303) are symmetrically distributed about the thread sleeve (3). The elastic tabs (303) are arc plates with "L" shaped end faces. The end of the elastic tab (303) away from the thread sleeve (3) is provided with a slope. The distance between one end of the elastic tab (303) and the thread sleeve (3) is greater than the plate thickness provided at the end of the screw (301).

6. The prefabricated composite slab structure with bidirectional close-fitting connection according to claim 5, characterized in that: The top and bottom surfaces of the second mounting groove (205) are provided with through openings (207), and the insert (208) is inserted into the through opening (207). The end of the insert (208) extending into the second mounting groove (205) is provided with an inclined surface. The top and bottom surfaces of the metal block (2) are provided with mounting grooves (206). A rubber strip (209) is fixed between the two parallel sidewalls of the mounting groove (206). The rubber strip (209) covers the through opening (207), and the other end of the insert (208) is fixed to the surface of the rubber strip (209).

7. The prefabricated composite slab structure with bidirectional close-fitting connection according to claim 1, characterized in that: A rubber pad (210) is fixed inside the second mounting groove (205). After the push block (302) pushes the two inserts (208) to stretch the rubber strip (209) and deforms, the push block (302) squeezes the rubber pad (210) and causes elastic deformation.

8. The prefabricated composite slab structure with bidirectional close-fitting connection according to claim 1, characterized in that: The top and bottom surfaces of the splicing groove 2 (102) are provided with reserved holes (104). The reserved holes (104) are in the shape of a "T" groove. A metal sleeve (4) is inserted into the bottom of the reserved hole (104). A connecting piece (401) is fixed at one end of the metal sleeve (4). One end of the connecting piece (401) is inserted into the reserved hole (104). After the two prefabricated composite plate bodies (1) are spliced, the push block (302) pushes the plug handles (208) at both ends of one prefabricated composite plate body (1) into the metal sleeves (4) at both ends of the other prefabricated composite plate body (1).

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