Connecting structure and method for concrete assembly type wallboards

Abstract

The invention discloses a connecting structure and method for concrete fabricated wallboards. The connecting structure and method are convenient to assemble and connect, reduce site construction and reduce construction cost. The connecting structure of the concrete assembly type wall plate comprises a prefabricated wall plate, a first connecting block, a connecting piece, a clamping piece, a second connecting block and a prefabricated plug pin. The two wallboards are connected through the connecting pieces and the clamping pieces in the connecting pieces. The mounting method of the connecting structure of the concrete fabricated wallboards comprises the steps that S1, the first connecting blocks, the connecting pieces and the clamping pieces are connected; s2, the connecting assembly is installed in a vertical connecting groove of the first prefabricated wallboard; s3, a second prefabricated wallboard is mounted on the other side of the connecting assembly; s4, pulling out the temporary bolt; a prefabricated bolt is inserted into the bolt hole of the first connecting block; and S5, concrete or cement is injected into the connecting piece. By the adoption of the connecting structure and method for the concrete assembly type wallboards, the wallboard connecting and assembling efficiency can be improved, and the working intensity of workers is reduced.

Description

Technical Field

[0001] This invention relates to the installation of prefabricated wall panels, and more particularly to a connection structure and method for prefabricated concrete wall panels. Background Technology

[0002] Precast concrete wall panels are a type of prefabricated wall panel. Precast wall panels are reinforced concrete slab components that are prefabricated in a prefabrication plant or on a construction site. They facilitate the assembly of walls for prefabricated buildings, thereby enabling the factory production of wall panels, reducing production costs, simplifying on-site construction procedures, and shortening the construction period.

[0003] Most existing precast wall panels have U-shaped connecting steel bars pre-installed on one side of the panel. When splicing the wall panels, a steel cage is formed between the two adjacent wall panels using the pre-installed steel bars. Vertical steel bars are then tied inside the steel cage. A formwork is then placed on the outside of the gap between the two wall panels, and grout is poured into the formwork. After the concrete has solidified, the formwork is removed, thus completing the connection of the wall panels.

[0004] In summary, the existing wall panel connection structure requires on-site reinforcement, formwork erection, and formwork dismantling during construction, which complicates the connection and assembly process, increases construction costs, and extends the construction period due to the need for subsequent formwork dismantling. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a connection structure for prefabricated concrete wall panels that facilitates assembly and connection, reduces on-site construction, and lowers construction costs.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a connection structure for precast concrete wall panels, including a precast wall panel, a first connecting block, a connector, a snap-fit ​​component, a second connecting block, and a precast pin;

[0007] Both ends of the precast wall panel are provided with vertical connecting grooves that match the connectors; multiple U-shaped connecting steel bars are provided in the vertical connecting grooves; the upper and lower ends of the vertical connecting grooves are provided with installation grooves; one side of the installation groove is provided with an insertion hole; the insertion hole passes through the installation groove and extends to the other side; a semi-circular grouting port is provided at the upper end of the vertical connecting groove.

[0008] Both ends of the first connecting block and the second connecting block are provided with pin holes;

[0009] The connector includes a hollow connector body; the upper end of the connector body is provided with a grouting structure communicating with the inner cavity; the two opposite sides of the connector body are provided with connection holes that match the U-shaped connecting steel bars.

[0010] Precast wall panels are installed on both sides of the connector; the connector is installed in a vertical connecting groove, and the U-shaped connecting steel bar extends through the insertion hole into the inner cavity of the connector; the locking member is installed inside the connector; the locking member tightens the U-shaped connecting steel bar inserted into the connector from both sides;

[0011] The first connecting block is installed in the upper mounting slot of the vertical connecting groove, and the second connecting block is installed in the lower mounting slot; the first connecting block and the second connecting block are fixed to the precast wall panel by precast pins; cement or concrete is injected into the inner cavity of the connector.

[0012] Furthermore, the engaging component includes two parallel vertical reinforcing bars; between the two vertical reinforcing bars are multiple inverted U-shaped fixing bars that match the U-shaped connecting reinforcing bars one by one; the upper end of the vertical reinforcing bars is provided with a plug that matches the inner cavity of the connecting component body; and the plug is provided with an extension plate at both ends.

[0013] The first connecting block is provided with a groove that matches the end cap with an extension plate at the upper end of the vertical reinforcing bar;

[0014] The connector is fitted onto the locking member; the plug of the locking member is slidably installed at the upper end of the inner cavity of the connector, and the downward sliding distance of the locking member is limited by the outer extension plate;

[0015] The first connecting block is installed above the connector; the lifting engagement piece causes the outer plate of the engagement piece to slide in the groove, rising to a position higher than the lowest position of the pin hole, and a temporary pin is inserted; the connector is installed between the two precast wall panels; U-shaped connecting steel bars are inserted on both sides of the connector;

[0016] After inserting U-shaped connecting steel bars on both sides of the connector, the temporary pin is pulled out, and the outer plate is moved downwards to below the pin hole by inserting a prying piece into the pin hole; the inverted U-shaped fixing rib of the locking piece is inserted into the U-shaped connecting steel bar; the U-shaped connecting steel bars inserted into the connector from both sides of the connector are tightened.

[0017] Install prefabricated pins in the holes of the prefabricated wall; the pins pass through the pin holes on the first connecting block to fix the first connecting block.

[0018] Furthermore, a connection structure for a precast concrete wall panel also includes a sealing strip, wherein sealing strip mounting grooves are provided on the side wall end faces on both sides of the vertical connection groove; the sealing strip is installed in the sealing strip mounting groove.

[0019] Furthermore, the grouting structure at the upper end of the connector body is a cylindrical grouting nozzle or grouting hole.

[0020] Furthermore, the first connecting block, the connecting piece, the snap-fit ​​piece, the second connecting block, and the precast pin are all made of reinforced concrete precast components.

[0021] Furthermore, one end of the prefabricated pin is a cone; the taper is 5° to 10°.

[0022] The present invention also provides an installation method for a connection structure of a precast concrete wall panel, comprising the following steps:

[0023] S1. Connect the first connecting block, the connecting piece, and the snap-fit ​​piece;

[0024] First, install the plug at the upper end of the locking piece into the groove of the first connecting block; so that the extension plate moves above the lowest point of the pin hole on the first connecting block; then insert a temporary pin into one of the two pin holes of the first connecting block;

[0025] The connector is fitted onto the snap-fit ​​component, such that the connecting holes of the connector are located on both sides of the span direction of the inverted U-shaped fixing rib, forming a connecting assembly.

[0026] S2. Install the connecting assembly into the vertical connecting groove of the first precast wall panel;

[0027] Install a second connecting block in the mounting groove below the precast wall panel, and insert a precast pin into one end of the second connecting block;

[0028] Install the connector in the vertical connecting groove; align the grouting structure on the connector with the semi-circular grouting port; and extend the U-shaped connecting steel bar in the vertical connecting groove through the connecting hole into the connector; install the first connecting block into the mounting groove above the precast wall panel; insert a temporary pin into one end of the first connecting block installed in the precast wall panel; and remove the temporary pin from the other end of the first connecting block.

[0029] S3. Install the second precast wall panel on the other side of the connecting assembly; insert the first connecting block extending from the first precast wall panel into the mounting groove at the upper end of the second precast wall panel; at the same time, make the U-shaped connecting steel bar in the vertical connecting groove of the second precast wall panel pass through the connecting hole and extend into the connecting assembly;

[0030] Furthermore, the portion of the second connecting block extending from the lower end of the first precast wall panel is inserted into the second precast wall panel; at the same time, a precast pin is inserted into the other end of the second connecting block.

[0031] S4. Pull out the temporary pin; and by inserting a prying tool into the pin hole, move the outer extension plate of the engaging piece downwards to below the pin hole; insert the inverted U-shaped fixing rib of the engaging piece into the U-shaped connecting steel bar; tighten the U-shaped connecting steel bar inserted into the connecting piece from both sides; and insert a prefabricated pin into the pin hole of the first connecting block.

[0032] S5. A grouting device is used to inject concrete or cement into the connector through a grouting structure to achieve the connection between the two wall panels.

[0033] The beneficial effects of this invention are as follows: The connection structure and method for prefabricated concrete wall panels described in this invention have the following advantages:

[0034] 1. The connection structure of the precast concrete wall panel of the present invention is achieved by setting symmetrical vertical connection grooves at both ends of the precast wall panel and pre-embedding U-shaped steel bars in the vertical connection grooves; at the same time, the connection of the two wall panels is achieved by connecting parts, which makes the connection simple and facilitates construction. Since vertical connection grooves are set on both sides of the precast wall panel and U-shaped connecting steel bars are pre-embedded in the connection grooves, the pre-embedded U-shaped connecting steel bars do not protrude outside the wall panel. Therefore, when the wall panel is located at the outermost side, it is easy to flatten the end face of the wall panel. It is only necessary to fill the vertical connection groove with cement and smooth it. At the same time, templates can be installed in the vertical connection grooves to facilitate the subsequent door frame installation requirements.

[0035] 2. The connection structure of the precast concrete wall panel of the present invention includes a snap-fit ​​component inside the connector. The snap-fit ​​component includes vertical steel bars and inverted U-shaped fixing bars. The inverted U-shaped fixing bars of the snap-fit ​​component are connected to the pre-embedded U-shaped connecting steel bars to achieve tensioning of the two precast wall panels. This avoids on-site reinforcement, simplifies on-site construction procedures, and reduces construction costs.

[0036] 3. The connector in the connection structure of the prefabricated concrete wall panel of the present invention is a hollow structure. After assembly, grout is injected into the inner cavity of the connector, and the assembly can be achieved when the injected grout solidifies naturally. This avoids the need to erect formwork during construction and the subsequent formwork removal process, thereby reducing construction difficulty, reducing construction steps, and reducing costs.

[0037] 4. Furthermore, the installation method of the connection structure of the precast concrete wall panel described in this invention, through the structural design of the snap-fit ​​component and the setting of the connection method, enables the snap-fit ​​component to cleverly tighten the U-shaped connecting steel bars pre-embedded in the vertical connection groove of the two connecting wall panels; thus facilitating operation; at the same time, grouting is carried out through the circular grouting port formed by splicing the pre-set semi-circular grouting ports on the two walls, which can avoid the spillage of grout. Grouting is carried out through a grouting device, which is an existing equipment with low equipment requirements and can reduce the labor intensity of workers.

[0038] In summary, the connection structure and method for prefabricated concrete wall panels described in this application can simplify the connection process of wall panels, improve the efficiency of wall panel connection and assembly, reduce the labor intensity of workers, simplify on-site construction procedures, and reduce construction costs. Attached Figure Description

[0039] Figure 1This is a perspective view of the connection structure of the precast concrete wall panel in an embodiment of the present invention;

[0040] Figure 2 This is a front view of the connection structure of the precast concrete wall panel in an embodiment of the present invention;

[0041] Figure 3 This is an exploded view of the connection structure of the precast concrete wall panel in an embodiment of the present invention;

[0042] Figure 4 This is a perspective view of the prefabricated wall panel in an embodiment of the present invention;

[0043] Figure 5 This is a front view of the prefabricated wall panel in an embodiment of the present invention;

[0044] Figure 6 This is a rear view of the prefabricated wall panel in an embodiment of the present invention;

[0045] Figure 7 This is an end view of the prefabricated wall panel in an embodiment of the present invention;

[0046] Figure 8 This is a top view of the prefabricated wall panel in an embodiment of the present invention;

[0047] Figure 9 This is a schematic diagram of the internal structure of the prefabricated wall panel in an embodiment of the present invention;

[0048] Figure 10 This is a front view of the engaging component in an embodiment of the present invention;

[0049] Figure 11 This is a side view of the engaging component in an embodiment of the present invention;

[0050] Figure 12 This is a perspective view of the engaging component in an embodiment of the present invention;

[0051] Figure 13 This is a perspective view of the connector in an embodiment of the present invention;

[0052] Figure 14 This is a schematic diagram of the connector structure in an embodiment of the present invention;

[0053] Figure 15 This is a schematic diagram of the assembly process of the first connecting block, connecting member, and engaging member in an embodiment of the present invention;

[0054] Figure 16 This is a perspective view of the first connecting block, connecting member, and engaging member assembled in an embodiment of the present invention;

[0055] Figure 17 This is a schematic diagram of the structure of the first connecting block, connecting member, and engaging member assembled in an embodiment of the present invention;

[0056] Figure 18 This is a perspective view of the connector installed on a prefabricated wall panel in an embodiment of the present invention;

[0057] Figure 19 This is a front view of the connector installed on a precast wall panel in an embodiment of the present invention;

[0058] Figure 20 This is a schematic diagram of the structure of the connector installed on a prefabricated wall panel in an embodiment of the present invention;

[0059] Figure 21 This is a perspective view of a connector in an embodiment of the present invention, in which prefabricated wall panels are installed on both sides.

[0060] Figure 22 This is a schematic diagram of a structure in an embodiment of the present invention in which prefabricated wall panels are installed on both sides of the connector;

[0061] Figure 23 This is a perspective view of the connector in the embodiment of the present invention, in which prefabricated wall panels are installed on both sides and the locking parts are engaged in place.

[0062] Figure 24 This is a schematic diagram of the structure in an embodiment of the present invention, in which prefabricated wall panels are installed on both sides of the connector and the engaging parts are engaged in place.

[0063] Figure 25 This is a schematic diagram of the assembled connection structure of the precast concrete wall panel in an embodiment of the present invention.

[0064] The diagram indicates: 100 - precast wall panel, 200 - first connecting block, 300 - sealing strip, 400 - connector, 500 - snap-fit, 600 - second connecting block, 700 - precast pin, 800 - temporary pin. Detailed Implementation

[0065] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0066] like Figures 1 to 17 As shown, the connection structure of the precast concrete wall panel of the present invention includes a precast wall panel 100, a first connecting block 200, a connector 400, a snap-fit ​​component 500, a second connecting block 600, and a precast pin 700.

[0067] Specifically, the precast wall panel 100, the first connecting block 200, the connector 400, the snap-fit ​​component 500, the second connecting block 600, and the precast pin 700 are all made of reinforced concrete precast components.

[0068] The precast wall panel 100 has vertical connecting grooves 110 at both ends that match the connectors 400; multiple U-shaped connecting steel bars 120 are installed in the vertical connecting grooves 110; installation grooves 160 are provided at both the upper and lower ends of the vertical connecting grooves 110; an insertion hole 130 is provided on one side of the installation groove 160; the insertion hole 130 penetrates the installation groove 160 and extends to the other side; a semi-circular grouting port 140 is provided at the upper end of the vertical connecting groove 110. In the process of preparing the precast wall panel 100, firstly, a mold for the precast wall panel is erected, a steel cage is woven inside the mold, and then concrete is injected. After the concrete solidifies and the mold is removed, the precast wall panel is formed. The mold for the precast wall panel has bosses at both ends that match the vertical connecting grooves 110, and grooves for placing the embedded U-shaped connecting steel bars are provided within the bosses. The insertion hole 130 can be formed by inserting a cylinder matching the insertion hole 130 into one side of the template, and then pulling out the cylinder during demolding. To form the semi-circular grouting port 140, only semi-circular bosses need to be set at corresponding positions on both sides of the template. Furthermore, sealing strip mounting grooves 150 are provided on the sidewall end faces of the vertical connecting groove 110. During the manufacturing process, only small bosses need to be set on the bosses. During subsequent installation, a sealing strip 300 can be installed within the sealing strip mounting groove 150.

[0069] The sealing strip 300 can be made of rubber or sound-insulating material. The sound-insulating material can be EVA foam, melamine foam, etc.

[0070] Both ends of the first connecting block 200 and the second connecting block 600 are provided with pin holes 220; and the first connecting block 200 is provided with a sliding groove 210. Therefore, in the process of preparing the first connecting block 200, an upward protrusion needs to be provided on the bottom plate of the mold of the first connecting block 200; so that after molding, the sliding groove 210 is formed in the first connecting block 200. Insertion holes are provided on both sides of the mold, and cylinders are inserted into the insertion holes; thus forming pin holes 220. In the process of preparing the second connecting block 600, the mold of the second connecting module 600 only needs to be provided with insertion holes on the templates on both sides, and cylinders are inserted into the insertion holes. Then, concrete can be poured.

[0071] The connector 400 includes a hollow connector body 410; the upper end of the connector body 410 is provided with a grouting structure 420 communicating with the inner cavity; the two opposite sides of the connector body 410 are provided with connecting holes 430 that match the U-shaped connecting steel bars 120.

[0072] In the process of preparing connector 400, since connector 400 is a hollow structure, it can be realized using existing precast cavity column technology. In this embodiment, a modular mold can be used, with smaller rectangular columns assembled from molds inside the mold cavity; a larger rectangular frame is erected outside the smaller rectangular columns using a template; a mold cavity is formed between the larger rectangular frame and the smaller rectangular columns inside; a reinforcing cage is placed inside the mold cavity. Then, concrete is injected into the mold cavity, and the concrete solidifies to form connector 400. The connecting holes on the connector can be achieved by inserting corresponding cylinders at appropriate positions on the outer template; when the grouting structure 420 on connector 400 is a circular hole, it can be formed by directly setting a corresponding circular boss on the side template; when the grouting structure 420 is a grouting nozzle, an outwardly protruding cylinder can be set on the side template, a sealing cap can be set on the cylinder, and a cylinder can be set at the center of the sealing cap; thus forming a circular grouting nozzle. During demolding, the corresponding cylinder is simply removed.

[0073] Specifically, the snap-fit ​​component 500 includes two parallel vertical reinforcing bars 510; a plurality of inverted U-shaped fixing bars 520, each matching one-to-one with the U-shaped connecting reinforcing bars 120, are arranged between the two vertical reinforcing bars 510; a plug 530 matching the inner cavity of the connector body 410 is provided at the upper end of each vertical reinforcing bar 510; and extension plates 540 are provided at both ends of each plug 530. The snap-fit ​​component 500 is formed by welding the reinforcing bars during its fabrication process, such as... Figures 10 to 12 As shown, the vertical reinforcing bar 510 and the inverted U-shaped fixing bar 520 are shaped as follows. Then, the upper end of the vertical reinforcing bar is inserted into the mold, and the plug 530 and the outer grinding plate 540 are formed by pouring concrete. Finally, the mold is demolded to obtain the snap-fit ​​part 500.

[0074] The specific connection structure of the precast wall panel 100, the first connecting block 200, the connector 400, the snap-fit ​​component 500, the second connecting block 600, and the precast pin 700 is as follows:

[0075] Precast wall panels 100 are installed on both sides of the connector 400; the connector 400 is installed in the vertical connecting groove 110, and the U-shaped connecting steel bar 120 extends through the insertion hole 130 into the inner cavity of the connector 400; the locking member 500 is installed inside the connector 400; the plug 530 of the locking member 500 is slidably installed at the upper end of the inner cavity of the connector 400, and the downward sliding distance of the locking member 500 is limited by the outer extension plate 540. The first connecting block 200 is installed above the connector 400; the locking member 500 is lifted so that the outer extension plate 540 of the locking member 500 slides in the sliding groove 210, rising to a position higher than the lowest position of the pin hole 220, and a temporary pin 800 is inserted; the connector 400 is installed between the two precast wall panels 100; U-shaped connecting steel bars 120 are inserted on both sides of the connector 400. After the U-shaped connecting steel bars 120 are inserted into both sides of the connector 400, the temporary pin 800 is pulled out, and the outer extension plate 540 is moved downwards to below the pin hole 220 by inserting a prying piece into the pin hole 220; the inverted U-shaped fixing rib 520 of the locking piece 500 is inserted into the U-shaped connecting steel bar 120; the U-shaped connecting steel bars 120 inserted into the connector 400 from both sides are tightened.

[0076] A prefabricated pin 700 is installed in the insertion hole 130 of the prefabricated wall 100; the pin 700 passes through the pin hole 220 on the first connecting block 200 to fix the first connecting block 200.

[0077] The first connecting block 200 is installed in the mounting groove 160 at the upper end of the vertical connecting groove 110, and the second connecting block 600 is installed in the mounting groove 160 at the lower end; the first connecting block 200 and the second connecting block 600 are fixed to the precast wall panel 100 by precast pins 700; cement or concrete is injected into the inner cavity of the connector 400.

[0078] The prefabricated pin 700 is prefabricated by concrete casting using a prefabrication mold and can be a cylindrical pin. To facilitate insertion of the prefabricated pin 700, in this embodiment, one end of the prefabricated pin 700 is a cone with a taper of 5° to 10°.

[0079] The present invention also provides an installation method for a connection structure of a precast concrete wall panel, comprising the following steps:

[0080] S1. Connect the first connecting block 200, the connecting piece 400, and the snap-fit ​​piece 500.

[0081] like Figures 15 to 17As shown, firstly, the plug 530 at the upper end of the snap-fit ​​500 is installed in the groove 200 of the first connecting block 200, so that the extension plate 540 moves above the lowest point of the pin hole 220 on the first connecting block 200; then, a temporary pin 800 is inserted into one of the two pin holes 220 of the first connecting block 200; the connector 400 is fitted onto the snap-fit ​​500, so that the connecting hole 430 of the connector 400 is located on both sides of the span direction of the inverted U-shaped fixing rib 520, forming a connecting assembly.

[0082] S2. Install the connecting assembly into the vertical connecting groove 110 of the first precast wall panel 100;

[0083] like Figures 18 to 20 As shown, a second connecting block 600 is installed in the mounting groove 160 below the precast wall panel 100, and a precast pin 700 is inserted into one end of the second connecting block 600; a connector 400 is installed in the vertical connecting groove 110; the grouting structure 420 on the connector 400 is aligned with the semi-circular grouting port 140; and the U-shaped connecting steel bar 120 in the vertical connecting groove 110 passes through the connecting hole 430 and extends into the connector 400; the first connecting block 200 is installed in the mounting groove 160 above the precast wall panel 100; and a temporary pin 800 is inserted into one end of the first connecting block 200 installed in the precast wall panel 100; and the temporary pin 800 at the other end of the first connecting block 200 is pulled out.

[0084] S3. Install the second precast wall panel 100 on the other side of the connecting assembly.

[0085] like Figure 21 , 22 As shown, the first connecting block 200 extending from the first precast wall panel 100 is inserted into the mounting groove at the upper end of the second precast wall panel 100; at the same time, the U-shaped connecting steel bar 120 in the vertical connecting groove 110 of the second precast wall panel 100 passes through the connecting hole 430 and extends into the connector 400; and the portion of the second connecting block 600 extending from the first precast wall panel 100 at the lower end of the first precast wall panel 100 is inserted into the second precast wall panel 100; at the same time, a precast pin 700 is inserted into the other end of the second connecting block 600.

[0086] S4, such as Figure 23 , 24As shown, the temporary pin 800 is pulled out; and a pry bar, which can be a pry bar, is inserted into the pin hole 220. This causes the outer extension plate 540 of the engaging member 500 to move downwards, below the pin hole 220; the inverted U-shaped fixing rib 520 of the engaging member 500 is inserted into the U-shaped connecting steel bar 120; the U-shaped connecting steel bar 120 inserted into the connecting member 400 from both sides is tightened; and a prefabricated pin 700 is inserted into the pin hole 200 of the first connecting block 200.

[0087] S5. Using a grouting device, concrete or cement is injected into the connector 4 through the grouting structure 420 to connect the two wall panels. Specifically, the grouting device uses an existing high-pressure grouting pump or a grouting machine used in existing technology for repairing cracks. Finally, the connection structure of the assembled concrete prefabricated wall panels is as follows: Figure 25 As shown.

Claims

1. A connection structure for prefabricated concrete wall panels, characterized in that: Includes precast wall panel (100), first connecting block (200), connector (400), snap-fit ​​component (500), second connecting block (600), and precast pin (700); Both ends of the precast wall panel (100) are provided with vertical connecting grooves (110) that match the connectors (400); multiple U-shaped connecting steel bars (120) are provided in the vertical connecting grooves (110); the upper and lower ends of the vertical connecting grooves (110) are provided with mounting grooves (160); a socket (130) is provided on one side of the mounting groove (160); the socket (130) passes through the mounting groove (160) and extends to the other side; a semi-circular grouting port (140) is provided at the upper end of the vertical connecting groove (110). Both ends of the first connecting block (200) and the second connecting block (600) are provided with pin holes (220); The connector (400) includes a hollow connector body (410); the upper end of the connector body (410) is provided with a grouting structure (420) communicating with the inner cavity; the two opposite sides of the connector body (410) are provided with connecting holes (430) that match the U-shaped connecting steel bars (120). Precast wall panels (100) are installed on both sides of the connector (400); the connector (400) is installed in the vertical connecting groove (110), and the U-shaped connecting steel bar (120) extends through the insertion hole (130) into the inner cavity of the connector (400); the locking member (500) is installed in the connector (400); the locking member (500) tightens the U-shaped connecting steel bar (120) inserted into the connector (400) from both sides. The first connecting block (200) is installed in the mounting groove (160) at the upper end of the vertical connecting groove (110), and the second connecting block (600) is installed in the mounting groove (160) at the lower end; the first connecting block (200) and the second connecting block (600) are fixed to the precast wall panel (100) by precast pins (700); cement or concrete is injected into the inner cavity of the connector (400).

2. The connection structure of a precast concrete wall panel as described in claim 1, characterized in that: The snap-fit ​​component (500) includes two parallel vertical steel bars (510); between the two vertical steel bars (510) are multiple inverted U-shaped fixing bars (520) that match the U-shaped connecting steel bars (120) one by one; the upper end of the vertical steel bar (510) is provided with a plug (530) that matches the inner cavity of the connector body (410); the plug (530) is provided with an extension plate (540) at both ends; The first connecting block (200) is provided with a groove (210) that matches the plug (530) with an extension plate (540) at the upper end of the vertical steel bar (510). The connector (400) is fitted onto the locking member (500); the plug (530) of the locking member (500) is slidably installed on the upper end of the inner cavity of the connector (400), and the extension plate (540) limits the downward sliding distance of the locking member (500); The first connecting block (200) is installed above the connector (400); the lifting engagement piece (500) causes the outer plate (540) of the engagement piece (500) to slide in the groove (210) and rise to a position higher than the lowest position of the pin hole (220), and a temporary pin (800) is inserted; the connector (400) is installed between the two precast wall panels (100); U-shaped connecting steel bars (120) are inserted on both sides of the connector (400); After inserting the U-shaped connecting steel bars (120) into both sides of the connector (400), the temporary pin (800) is pulled out, and the outer plate (540) is moved downwards to below the pin hole (220) by inserting a prying piece into the pin hole (220); the inverted U-shaped fixing rib (520) of the locking piece (500) is inserted into the U-shaped connecting steel bar (120); the U-shaped connecting steel bars (120) inserted into the connector (400) from both sides of the connector (400) are tightened. Install a prefabricated pin (700) in the socket (130) of the prefabricated wall (100); the pin (700) passes through the pin hole (220) on the first connecting block (200) to fix the first connecting block (200).

3. The connection structure of a precast concrete wall panel as described in claim 2, characterized in that: It also includes a sealing strip (300), and the side wall end faces on both sides of the vertical connecting groove (110) are provided with sealing strip mounting grooves (150); the sealing strip (300) is installed in the sealing strip mounting groove (150).

4. The connection structure of a precast concrete wall panel as described in claim 2, characterized in that: The grouting structure (420) at the upper end of the connector body (410) is a cylindrical grouting nozzle or grouting hole.

5. The connection structure of a precast concrete wall panel as described in claim 2, characterized in that: The first connecting block (200), the connecting piece (400), the snap-fit ​​piece (500), the second connecting block (600), and the precast pin (700) are all made of reinforced concrete precast components.

6. The connection structure of a precast concrete wall panel as described in claim 1, characterized in that: One end of the prefabricated pin (700) is a cone; the taper is 5° to 10°.

7. The installation method of the connection structure of the precast concrete wall panel as described in any one of claims 2 to 6, characterized in that, Includes the following steps: S1. Connect the first connecting block (200), the connecting piece (400), and the engaging piece (500); First, the plug (530) at the upper end of the snap-fit ​​part (500) is installed in the groove (200) of the first connecting block (200); so that the extension plate (540) moves above the lowest point of the pin hole (220) on the first connecting block (200); then a temporary pin (800) is inserted into one of the two pin holes (220) of the first connecting block (200). The connector (400) is fitted onto the snap-fit ​​(500) such that the connecting hole (430) of the connector (400) is located on both sides of the span direction of the inverted U-shaped fixing rib (520) to form a connecting assembly; S2. Install the connecting assembly into the vertical connecting groove (110) of the first precast wall panel (100); Install a second connecting block (600) in the mounting groove (160) below the precast wall panel (100), and insert a precast pin (700) into one end of the second connecting block (600). Install the connector (400) in the vertical connecting groove (110); align the grouting structure (420) on the connector (400) with the semi-circular grouting port (140); and extend the U-shaped connecting steel bar (120) in the vertical connecting groove (110) through the connecting hole (430) into the connector (400); install the first connecting block (200) into the mounting groove (160) above the precast wall panel (100); and insert a temporary pin (800) into one end of the first connecting block (200) installed in the precast wall panel (100); and remove the temporary pin (800) from the other end of the first connecting block (200). S3. Install the second precast wall panel (100) on the other side of the connecting assembly; insert the first connecting block (200) extending from the first precast wall panel (100) into the mounting groove at the upper end of the second precast wall panel (100); at the same time, make the U-shaped connecting steel bar (120) in the vertical connecting groove (110) of the second precast wall panel (100) pass through the connecting hole (430) and extend into the connecting member (400); And insert the portion of the second connecting block (600) at the lower end of the first precast wall panel (100) that extends out of the first precast wall panel (100) into the second precast wall panel (100); at the same time, insert a precast pin (700) into the other end of the second connecting block (600). S4. Pull out the temporary pin (800); and by inserting a prying tool into the pin hole (220), move the extension plate (540) of the engaging member (500) downward to below the pin hole (220); insert the inverted U-shaped fixing rib (520) of the engaging member (500) into the U-shaped connecting steel bar (120); tighten the U-shaped connecting steel bar (120) inserted into the connecting member (400) from both sides; and insert the prefabricated pin (700) into the pin hole (200) of the first connecting block (200). S5. Using a grouting device, concrete or cement is injected into the connector (4) through the grouting structure (420) to achieve the connection of the two wall panels.

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