CN213709966U - Assembled precast concrete exterior wall cladding dry-type connection structure - Google Patents

Assembled precast concrete exterior wall cladding dry-type connection structure Download PDF

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Publication number
CN213709966U
CN213709966U CN202021942149.9U CN202021942149U CN213709966U CN 213709966 U CN213709966 U CN 213709966U CN 202021942149 U CN202021942149 U CN 202021942149U CN 213709966 U CN213709966 U CN 213709966U
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wall
top surface
floor
precast concrete
concrete exterior
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CN202021942149.9U
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Chinese (zh)
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吴凡
史东杰
金挺
孟超
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Zhejiang Sanjian Construction Group Co Ltd
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Zhejiang Sanjian Construction Group Co Ltd
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Abstract

The utility model provides an assembled precast concrete exterior wall cladding dry-type connection structure. The assembly type precast concrete exterior wall cladding dry-type connecting structure comprises floors; the wall structure is abutted against the side wall of the floor and comprises a prefabricated wall, connecting pins, a first embedded part and connecting grooves; the connecting structures are installed on the top surface edge and the bottom surface edge of the floor and comprise second embedded parts, angle steel plates, first bolts and mounting grooves; the stable structures are respectively fixed on the top surface of the floor and the side wall of the prefabricated wall; and the fixing structure is welded on the top surface of the second embedded part and comprises a base, a tooth groove, a screw rod, a limiting strip, a rotating ring, a spring and limiting teeth. The utility model provides an assembled precast concrete exterior wall cladding dry-type connection structure has the installation simply and fixed firm advantage.

Description

Assembled precast concrete exterior wall cladding dry-type connection structure
Technical Field
The utility model relates to a technical field of assembled prefabricated external wall panel especially relates to an assembled precast concrete exterior wall cladding dry-type connection structure.
Background
With the development of modern industrial technology, building houses can be manufactured in batches and sets like machine production. The prefabricated house components are transported to a construction site to be assembled.
Fabricated buildings have become of interest since the beginning of the 20 th century and have been realized through the sixties. The first attempts made in English, French, Soviet Union, etc. The assembly type building has high construction speed and low production cost, and is rapidly popularized and developed all over the world.
Wherein prefabricated side fascia of assembled is exactly unified at the standardized production of mill, and the heat preservation of outer wall, curtain built-in fitting also accomplish in the component factory with the outer wall is synchronous in addition, then transport the job site installation, but present side fascia reserved reinforcement need be accurate and the mounting hole is aligned with, difficult hoist and mount, complex operation, prefabricated side fascia is fixed firm inadequately moreover, takes place easily and emptys the accident.
Therefore, it is necessary to provide a new dry type connection structure for prefabricated concrete exterior wall cladding to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides an installation is simple and fixed firm assembled precast concrete exterior wall cladding dry-type connection structure.
The utility model provides an assembled precast concrete exterior wall cladding dry-type connection structure includes: a floor; the wall structure is abutted against the side wall of the floor and comprises a prefabricated wall, connecting pins, first embedded parts and connecting grooves, the prefabricated wall is abutted against the side wall of the floor, the connecting pins are fixed at the bottom ends of the side walls of the prefabricated wall, the first embedded parts are installed at the bottom ends and the side walls of the connecting pins, the connecting grooves are arranged in the connecting pins, and the bottom ends of the connecting grooves penetrate through the first embedded parts at the bottom ends of the connecting pins; the connecting structure is installed at the edge of the top surface and the edge of the bottom surface of the floor, and comprises second embedded parts, angle steel plates, first bolts and mounting grooves, a plurality of second embedded parts are installed at the edge of the top surface and the edge of the bottom surface of the floor, the mounting grooves are formed in the prefabricated wall, the first bolts are in threaded connection with the mounting grooves, the longer ends of the angle steel plates are welded to the top surfaces of the second embedded parts, and the shorter ends of the angle steel plates are fixedly connected with the prefabricated wall through the first bolts; the stable structures are respectively fixed on the top surface of the floor and the side wall of the prefabricated wall; the fixing structure is welded on the top surface of the second embedded part and comprises a base, a tooth groove, a screw rod, a limiting strip, a rotating ring, a spring and a limiting tooth, the base is welded on the top surface of the second embedded part, the tooth grooves are arranged on the top surface of the base, the bottom end of the screw rod is rotatably connected inside the base, the screw rod is in threaded connection with the inside of the connecting groove, the four limiting strips are symmetrically fixed on the side wall of the bottom end of the screw rod, the rotating ring is in sliding connection with the side wall of the bottom end of the screw rod and the limiting strips, the top surface of the rotating ring is abutted against the bottom surface of the top end of the limiting strip, the top end of the spring is fixed on the bottom surface of the top end of the limiting strip, the bottom end of the spring is fixed on the top surface of the rotating ring, the limiting teeth are arranged on the outer wall of the rotating ring and are connected with the tooth grooves in a clamping mode.
Preferably, wall structure still includes concatenation tooth, heated board and filler, the concatenation tooth symmetry is located the top and the bottom of prefabricated wall, and one on the prefabricated wall bottom the concatenation tooth and another on the prefabricated wall top surface the concatenation tooth is mutually supported and is connected, the heated board install in the inside of prefabricated wall, the filler is located two that mutually support and connect between the concatenation tooth, just the filler is fire-resistant seam material.
Preferably, the angle steel plate is of an L-shaped structure, and the shorter end of the angle steel plate is abutted against the prefabricated wall.
Preferably, connection structure still includes first regulation hole, first regulation hole is located the shorter one end of angle steel board, just first bolt runs through first regulation hole.
Preferably, stable structure includes a regulation section of thick bamboo, lead screw, fixed hook, screw, fixed plate, go-between, second regulation hole and second bolt, and is a plurality of the fixed plate is contradicted the top surface of floor with the lateral wall of prefabricated wall, the second regulation hole runs through the fixed plate, the second bolt respectively with the floor with threaded connection between the prefabricated wall, just the fixed plate passes through the second bolt respectively with the floor with prefabricated wall fixed connection, the go-between is fixed in the top surface of fixed plate, the fixed hook with the go-between block is connected, the screw with fixed hook threaded connection, just the screw is contradicted the go-between, the one end of lead screw with fixed hook fixed connection, the inside of adjusting a section of thick bamboo respectively with two the other end threaded connection of lead screw.
Preferably, the sealing plate is installed in the lateral wall of floor with between the prefabricated wall, just the sealing plate is the fire prevention sound insulation material that rock wool made.
Compared with the prior art, the utility model provides an assembled precast concrete exterior wall cladding dry-type connection structure has following beneficial effect:
the utility model provides an assembled precast concrete exterior wall cladding dry-type connection structure, through the floor with the precast wall is installed the first built-in fitting in advance when prefabricating with the second built-in fitting and the spread groove, simplified the loaded down with trivial details installation procedure when the precast wall hoists, reduced the installation degree of difficulty, not only made things convenient for workman's operation installation, improved later stage adjustment and modification ability moreover; meanwhile, the key positions of the prefabricated wall are connected by the connecting structure, the stabilizing structure and the fixing structure in a matched mode, so that the use of reserved steel bars is reduced while the stability of connection between the prefabricated wall and floors is greatly improved, and the production cost is saved.
Drawings
FIG. 1 is a schematic structural view of a preferred embodiment of the dry type connecting structure for the prefabricated concrete exterior wall cladding provided by the present invention;
FIG. 2 is an enlarged schematic view of area A shown in FIG. 1;
FIG. 3 is an enlarged schematic view of region B shown in FIG. 1;
FIG. 4 is a schematic cross-sectional view of the splice structure and fixation structure shown in FIG. 1;
FIG. 5 is an enlarged schematic view of region C shown in FIG. 4;
fig. 6 is a schematic cross-sectional view of the fixation structure shown in fig. 4.
Reference numbers in the figures: 1. floor, 2, wall structure, 21, prefabricated wall, 22, connecting foot, 23, splicing tooth, 24, heated board, 25, filler, 26, first built-in fitting, 27, connecting groove, 3, connecting structure, 31, second built-in fitting, 32, angle steel plate, 33, first adjusting hole, 34, first bolt, 35, mounting groove, 4, stable structure, 41, adjusting cylinder, 42, lead screw, 43, fixing hook, 44, screw, 45, fixing plate, 46, connecting ring, 47, second adjusting hole, 48, second bolt, 5, fixed structure, 51, base, 52, tooth socket, 53, screw rod, 54, spacing strip, 55, rotating ring, 56, spring, 57, spacing tooth, 6, sealing plate.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and embodiments.
Please refer to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5 and fig. 6, wherein fig. 1 is a schematic structural view of a preferred embodiment of the dry type connecting structure for an assembled precast concrete exterior wall cladding according to the present invention; FIG. 2 is an enlarged schematic view of area A shown in FIG. 1; FIG. 3 is an enlarged schematic view of region B shown in FIG. 1; FIG. 4 is a schematic cross-sectional view of the splice structure and fixation structure shown in FIG. 1; FIG. 5 is an enlarged schematic view of region C shown in FIG. 4; fig. 6 is a schematic cross-sectional view of the fixation structure shown in fig. 4. Assembled precast concrete exterior wall cladding dry-type connection structure includes: floor 1; the wall structure 2 is abutted against the side wall of the floor 1, the wall structure 2 comprises a prefabricated wall 21, connecting pins 22, first embedded parts 26 and connecting grooves 27, the prefabricated wall 21 is abutted against the side wall of the floor 1, the connecting pins 22 are fixed at the bottom end of the side wall of the prefabricated wall 21, the first embedded parts 26 are mounted at the bottom end and the side wall of the connecting pins 22, the connecting grooves 27 are arranged in the connecting pins 22, and the bottom ends of the connecting grooves 27 penetrate through the first embedded parts 26 at the bottom ends of the connecting pins 22; the connecting structure 3 is installed at the top surface edge and the bottom surface edge of the floor 1, the connecting structure 3 comprises second embedded parts 31, angle steel plates 32, first bolts 34 and installation grooves 35, the second embedded parts 31 are installed at the top surface edge and the bottom surface edge of the floor 1, the installation grooves 35 are arranged inside the prefabricated wall 21, the first bolts 34 are in threaded connection with the installation grooves 35, the longer ends of the angle steel plates 32 are welded to the top surface of the second embedded parts 31, and the shorter ends of the angle steel plates 32 are fixedly connected with the prefabricated wall 21 through the first bolts 34; the stabilizing structures 4 are respectively fixed on the top surface of the floor 1 and the side wall of the prefabricated wall 21; the fixed structure 5 is welded on the top surface of the second embedded part 31, the fixed structure 5 comprises a base 51, a tooth groove 52, a screw 53, a limit strip 54, a rotating ring 55, a spring 56 and limit teeth 57, the base 51 is welded on the top surface of the second embedded part 31, the tooth groove 52 is arranged on the top surface of the base 51, the bottom end of the screw 53 is rotatably connected inside the base 51, the screw 53 is in threaded connection with the inside of the connecting groove 27, the four limit strips 54 are symmetrically fixed on the bottom end side wall of the screw 53, the rotating ring 55 is in sliding connection with the bottom end side wall of the screw 53 and the limit strip 54, the top surface of the rotating ring 55 abuts against the bottom surface of the top end of the limit strip 54, the top end of the spring 56 is fixed on the bottom surface of the top end of the limit strip 54, and the bottom end of the spring is fixed on the top surface of the, the limiting teeth 57 are arranged on the outer wall of the rotating ring 55, and the limiting teeth 57 are connected with the tooth grooves 52 in a clamping mode.
In a specific implementation process, as shown in fig. 1 and 4, the wall structure 2 further includes splicing teeth 23, an insulation board 24 and a filler 25, the splicing teeth 23 are symmetrically disposed at the top end and the bottom end of the prefabricated wall 21, the splicing teeth 23 on the bottom end of one prefabricated wall 21 are mutually matched and connected with the splicing teeth 23 on the top surface of the other prefabricated wall 21, the insulation board 24 is mounted inside the prefabricated wall 21, the filler 25 is disposed between the two splicing teeth 23 which are mutually matched and connected, the filler 25 is a refractory joint material, and the splicing teeth 23 are convenient for splicing when a plurality of prefabricated walls 21 are mounted, and meanwhile, the prefabricated walls 21 are conveniently aligned; the heat insulation plate 24 is used for heat insulation; the filler 25 is used to increase the sealing performance between walls and has the effects of fire resistance and high temperature resistance.
In the concrete implementation, as shown in fig. 1, 2 and 4, the gusset plate 32 has an L-shaped structure, and a shorter end of the gusset plate 32 abuts against the prefabricated wall 21, in order to stably connect the floor 1 and the prefabricated wall 21.
In the specific implementation process, as shown in fig. 1 and 2, the connecting structure 3 further includes a first adjusting hole 33, the first adjusting hole 33 is disposed at a shorter end of the angle steel plate 32, and the first bolt 34 penetrates through the first adjusting hole 33, so that the angle steel plate 32 is matched with and mounted by the first bolt 34, the precision is reduced, and meanwhile, the position of the prefabricated wall 21 is adjusted conveniently.
In a specific implementation process, as shown in fig. 1 and 3, the stabilizing structure 4 includes an adjusting cylinder 41, a lead screw 42, a fixing hook 43, a screw 44, a fixing plate 45, a connection ring 46, a second adjusting hole 47 and a second bolt 48, wherein a plurality of fixing plates 45 abut against the top surface of the floor 1 and the side wall of the prefabricated wall 21, the second adjusting hole 47 penetrates through the fixing plate 45, the second bolt 48 is respectively in threaded connection with the floor 1 and the prefabricated wall 21, the fixing plate 45 is respectively in fixed connection with the floor 1 and the prefabricated wall 21 through the second bolt 48, the connection ring 46 is fixed on the top surface of the fixing plate 45, the fixing hook 43 is in snap connection with the connection ring 46, the screw 44 is in threaded connection with the fixing hook 43, the screw 44 abuts against the connection ring 46, one end of the lead screw 42 is fixedly connected with the fixing hook 43, the interior of the adjusting cylinder 41 is respectively in threaded connection with the other ends of the two screw rods 42, and the stabilizing structure 4 is arranged to improve the stability of the prefabricated wall 21 in the installation process and facilitate the adjustment of the angle between the prefabricated wall 21 and the floor 1.
In a specific implementation process, as shown in fig. 3, the sealing plate 6 is installed between the side wall of the floor 1 and the prefabricated wall 21, and the sealing plate 6 is made of a fire-proof and sound-proof material made of rock wool, so as to increase the sealing property between the prefabricated wall 21 and the floor 1, and simultaneously have the effects of sound insulation, fire prevention and high temperature resistance.
The utility model provides an assembled precast concrete exterior wall cladding dry-type connection structure's theory of operation as follows:
firstly, the first bolt 34 is passed through the first adjusting hole 33 of the gusset plate 32, the shorter end of the gusset plate 32 is preliminarily fixed to the prefabricated wall 21, and simultaneously the second bolt 48 is passed through the second adjusting hole 47 of the fixing plate 45, the fixing plate 45 is preliminarily fixed to the corresponding positions of the floor 1 and the prefabricated wall 21, then the screw 53 is threadedly coupled to the coupling groove 27 of the bottom surface of the coupling leg 22, then the prefabricated wall 21 is hoisted to a designated height and position, and is slowly moved to a mounting position by a worker, according to a control line and an elevation which have been bounced, the fixing hook 43 of one end of the screw rod 42 is firstly hooked on the coupling ring 46 of the fixing plate 45 in cooperation with a crane, the screw 44 is rotated, the screw 44 abuts on the rotating ring 46, so that the fixing hook 43 is tightly hooked on the coupling ring 46, then moving the fixing plate 45, finely adjusting the position of the fixing plate 45, sliding the primarily connected second bolt 48 in the second adjusting hole 47 until the fixing plate 45 reaches a proper position, then screwing the second bolt 48 to fix the fixing plate 45 on the floor 1 and the surface of the prefabricated wall 21, then rotating the adjusting cylinder 41 to adjust the length of the two sections of the lead screws 42 so that the prefabricated wall 21 and the floor 1 are perpendicular to each other, at the same time, the connecting feet 22 on the side wall at the bottom end of the prefabricated wall 21 are just above the second embedded part 31, shaking the angle steel plates 32 on the side wall at the top end and the side wall at the bottom end of the prefabricated wall 21 up and down, sliding the first bolt 34 in the first adjusting hole 33 so that the longer end of the angle steel plate 32 can abut against the surface of the second embedded part 31 on the top surface and the bottom surface of the floor 1, simultaneously rotating the screw rods 53, wherein the screw rods 53 rotate in the connecting grooves 27 until the bases 51 at the bottom ends of the screw rods 53 abut against the top surfaces of the second embedded parts 31 on the top surface of the floor 1, then welding the longer ends of the angle steel plates 32 and the bases 51 on the surfaces of the second embedded parts 31, then adjusting the tightness of the stable structure 4 according to the bounced control lines and elevations, then lifting the rotating ring 55 upwards, extruding the springs 56 by the rotating ring 55, simultaneously pulling the limiting teeth 57 out of the tooth grooves 52, enabling the limiting teeth 57 to be not in clamping connection with the tooth grooves 52, then rotating the rotating ring 55, and as the rotating ring 55 and the screw rods 53 are connected together through the limiting strips 54, the rotating ring 55 drives the screw rods 53 to rotate when rotating, and the screw rods 53 rotate in the connecting grooves 27, the prefabricated wall 21 can be lifted or lowered, so that the height of the prefabricated wall 21 can be finely adjusted, after the prefabricated wall is adjusted, the rotating ring 55 is loosened, the spring 56 pushes the rotating ring 55, the rotating ring 55 slides along the limiting strip 54, the limiting teeth 57 are driven to enter the tooth grooves 52 and are clamped and connected with the tooth grooves, the rotating ring 55 cannot rotate, and the screw 53 cannot rotate randomly; then, the first bolts 34 are tightened to fix the gusset 32 firmly, and finally, the sealing plate 6 is filled between the precast wall 21 and the floor; splicing a plurality of prefabricated walls 21 in the above manner, ensuring that the splicing teeth 23 between two adjacent prefabricated walls 21 are mutually matched and connected, and filling the filler 25 between the two splicing teeth 23; after the installation is completed, the second bolt 48 on the fixing plate 45 is rotated, and the second bolt 48 is removed, so that the fixing plate 45 is removed from the surface of the prefabricated wall 21 and the top surface of the floor 1, the adjusting cylinder 41, the lead screw 42 and the fixing hook 43 are separated from the wall together, then the screw 44 is rotated, the screw 44 is loosened, the bottom end of the screw 44 does not abut against the connecting ring 46, so that the fixing hook 43 is loosened from the connecting ring 46, and finally the adjusting cylinder 41, the lead screw 42 and the fixing hook 43 are separated from the connecting ring 46.
Compared with the prior art, the utility model provides an assembled precast concrete exterior wall cladding dry-type connection structure has following beneficial effect:
the utility model provides an assembled precast concrete exterior wall cladding dry-type connection structure, through floor 1 with precast wall 21 install in advance when prefabricating first built-in fitting 26 and second built-in fitting 31 and spread groove 27, simplify the loaded down with trivial details installation procedure when precast wall 21 hoists, reduced the installation degree of difficulty, not only made things convenient for workman's operation installation, improved later stage adjustment and revise ability moreover; meanwhile, the connecting structure 3, the stabilizing structure 4 and the fixing structure 5 are matched and connected at the key position of the prefabricated wall 21, so that the use of reserved steel bars is reduced while the connection stability between the prefabricated wall 21 and the floor 1 is greatly improved, and the production cost is saved.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims (6)

1. The utility model provides an assembled precast concrete exterior wall cladding dry-type connection structure which characterized in that includes:
a floor (1);
the wall structure (2) is abutted against the side wall of the floor (1), the wall structure (2) comprises a prefabricated wall (21), connecting pins (22), first embedded parts (26) and connecting grooves (27), the prefabricated wall (21) is abutted against the side wall of the floor (1), the connecting pins (22) are fixed at the bottom end of the side wall of the prefabricated wall (21), the first embedded parts (26) are installed at the bottom end and the side wall of the connecting pins (22), the connecting grooves (27) are arranged inside the connecting pins (22), and the bottom ends of the connecting grooves (27) penetrate through the first embedded parts (26) at the bottom ends of the connecting pins (22);
the connecting structure (3) is installed on the top surface edge and the bottom surface edge of the floor (1), the connecting structure (3) comprises second embedded parts (31), angle steel plates (32), first bolts (34) and installation grooves (35), the second embedded parts (31) are installed on the top surface edge and the bottom surface edge of the floor (1), the installation grooves (35) are formed in the prefabricated wall (21), the first bolts (34) are in threaded connection with the installation grooves (35), the longer ends of the angle steel plates (32) are welded to the top surface of the second embedded parts (31), and the shorter ends of the angle steel plates (32) are fixedly connected with the prefabricated wall (21) through the first bolts (34);
-stabilizing structures (4), said stabilizing structures (4) being fixed to the top surface of said storey (1) and to the side walls of said prefabricated wall (21), respectively;
the fixing structure (5) is welded on the top surface of the second embedded part (31), the fixing structure (5) comprises a base (51), tooth grooves (52), a screw rod (53), a limiting strip (54), a rotating ring (55), a spring (56) and a limiting tooth (57), the base (51) is welded on the top surface of the second embedded part (31), the tooth grooves (52) are arranged on the top surface of the base (51), the bottom end of the screw rod (53) is rotatably connected inside the base (51), the screw rod (53) is in threaded connection with the inside of the connecting groove (27), the four limiting strips (54) are symmetrically fixed on the side wall of the bottom end of the screw rod (53), the rotating ring (55) is in sliding connection with the side wall of the bottom end of the screw rod (53) and the limiting strip (54), and the top surface of the rotating ring (55) abuts against the bottom surface of the top end of the limiting strip (54), the top end of the spring (56) is fixed on the bottom surface of the top end of the limiting strip (54), the bottom end of the spring is fixed on the top surface of the rotating ring (55), the limiting teeth (57) are arranged on the outer wall of the rotating ring (55), and the limiting teeth (57) are connected with the tooth grooves (52) in a clamping mode.
2. The dry type connecting structure of the assembled precast concrete exterior wall cladding according to claim 1, wherein the wall structure (2) further comprises splicing teeth (23), a heat insulation board (24) and a filler (25), the splicing teeth (23) are symmetrically arranged at the top end and the bottom end of the precast wall (21), the splicing teeth (23) at the bottom end of one precast wall (21) are mutually matched and connected with the splicing teeth (23) at the top surface of the other precast wall (21), the heat insulation board (24) is arranged inside the precast wall (21), and the filler (25) is arranged between the two splicing teeth (23) which are mutually matched and connected.
3. The fabricated precast concrete exterior wall cladding dry-type connection structure of claim 1, wherein the angle steel plate (32) has an L-shaped structure, and a shorter end of the angle steel plate (32) abuts against the precast wall (21).
4. The dry type connection structure of an assembled precast concrete exterior wall cladding as recited in claim 1, wherein said connection structure (3) further comprises a first adjusting hole (33), said first adjusting hole (33) is provided at a shorter end of said angle steel plate (32), and said first bolt (34) penetrates said first adjusting hole (33).
5. The dry type connection structure of an assembled precast concrete exterior wall cladding according to claim 1, wherein the stabilizing structure (4) comprises adjusting cylinders (41), a screw rod (42), a fixing hook (43), a screw (44), a fixing plate (45), a connecting ring (46), a second adjusting hole (47) and a second bolt (48), the fixing plates (45) are abutted against the top surface of the floor (1) and the side wall of the precast wall (21), the second adjusting hole (47) penetrates through the fixing plate (45), the second bolt (48) is respectively in threaded connection with the floor (1) and the precast wall (21), the fixing plate (45) is respectively in fixed connection with the floor (1) and the precast wall (21) through the second bolt (48), the connecting ring (46) is fixed on the top surface of the fixing plate (45), the fixing hook (43) is clamped and connected with the connecting ring (46), the screw (44) is in threaded connection with the fixing hook (43), the screw (44) abuts against the connecting ring (46), one end of each screw rod (42) is fixedly connected with the fixing hook (43), and the inside of the adjusting cylinder (41) is respectively in threaded connection with the other ends of the two screw rods (42).
6. The fabricated precast concrete exterior wall cladding dry-type connection structure according to claim 1, wherein a sealing plate (6) is installed between the side wall of the story floor (1) and the precast wall (21).
CN202021942149.9U 2020-09-08 2020-09-08 Assembled precast concrete exterior wall cladding dry-type connection structure Active CN213709966U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021942149.9U CN213709966U (en) 2020-09-08 2020-09-08 Assembled precast concrete exterior wall cladding dry-type connection structure

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Application Number Priority Date Filing Date Title
CN202021942149.9U CN213709966U (en) 2020-09-08 2020-09-08 Assembled precast concrete exterior wall cladding dry-type connection structure

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CN213709966U true CN213709966U (en) 2021-07-16

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