Connecting piece and split bolt integrated device for composite thermal insulation outer formwork of building outer wall

Abstract

The utility model belongs to the technical field of building outer wall construction, and particularly relates to a building outer wall composite heat preservation outer formwork connecting piece and split bolt integrated device which comprises a connecting rod and an extension rod which are coaxially arranged. One end of the connecting rod is a fixed end, and the other end is a first butting end; one end of the extension rod is a second butt joint end, and the other end is a mounting end; the first butt joint end of the connecting rod is in butt joint connection with the second butt joint end of the extension rod through a connecting plug; the first butt joint end of the connecting rod extends into the mounting channel in the connecting plug and is connected with the connecting plug; the second butt joint end of the extension rod extends into the mounting channel in the connecting plug and is detachably connected with the connecting plug; the fixed end of the connecting rod is connected with a water stop piece. And after the concrete reaches the form removal strength, grouting and hole blocking operation after the formwork supporting system and the inner formwork are removed can be avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of building exterior wall construction, and particularly relates to an integrated device of a building exterior wall composite thermal insulation external formwork connecting piece and a tie bolt. Background Technique

[0002] Building exterior walls are usually formed by in-situ casting. Inner and outer formworks are erected and supported by a formwork support system. The inner and outer formworks are connected by horizontally arranged tie bolts, and then concrete is poured into the pouring chamber surrounded by the inner and outer formworks. The existing tie bolts include a screw rod and water stop pieces installed at both ends of the screw rod; one end of the screw rod extends out from the outer side of the inner formwork, and the other end of the screw rod extends out from the outer side of the outer formwork; one of the water stop pieces abuts against the outer side of the inner formwork, and the other water stop piece abuts against the outer side of the outer formwork. After the concrete reaches the formwork removal strength, the formwork support system, tie bolts, inner formwork and outer formwork are removed, and then grouting is carried out in the through holes formed by the tie bolts.

[0003] In winter in the north, the temperature is low. The external formworks of the exterior walls of northern buildings usually adopt composite thermal insulation formworks, mainly including two types: CT composite thermal insulation formworks and LS composite thermal insulation formworks, which are prior art. When using a composite thermal insulation formwork as the external formwork of a building exterior wall, after the concrete reaches the formwork removal strength, the formwork support system, tie bolts and inner formwork are removed, the composite thermal insulation formwork is retained, and then grouting is carried out in the through holes formed by the tie bolts. The wall concrete structure and the composite thermal insulation formwork together serve as the building exterior wall. Since multiple tie bolts are installed, it is necessary to carry out grouting plugging operations on multiple through holes, which has the disadvantages of cumbersome operation, extended construction period and increased cost. Summary of the Utility Model

[0004] The technical problem to be solved by the utility model is to provide an integrated device of a building exterior wall composite thermal insulation external formwork connecting piece and a tie bolt, which can avoid the grouting plugging operation after removing the formwork support system and the inner formwork when the concrete reaches the formwork removal strength.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an integrated device of a building exterior wall composite thermal insulation external formwork connecting piece and a tie bolt, including a connecting rod and an extension rod arranged coaxially; one end of the connecting rod is a fixed end, and the other end is a first docking end; one end of the extension rod is a second docking end, and the other end is an installation end; the first docking end of the connecting rod and the second docking end of the extension rod are connected in butt joint through a connecting plug; the first docking end of the connecting rod extends into the installation channel in the connecting plug and is connected with the connecting plug; the second docking end of the extension rod extends into the installation channel in the connecting plug and is detachably connected with the connecting plug; a water stop piece is connected to the fixed end of the connecting rod.

[0006] Further, the water stop piece includes a mounting ring arranged coaxially with the connecting rod, and a water stop block arranged in the mounting ring;

[0007] There is a spacing between the outer peripheral surface of the water stop block and the inner peripheral surface of the mounting ring, and the water stop block and the mounting ring are connected by support rods; multiple support rods are provided, and the multiple support rods are evenly distributed along the circumferential direction of the mounting ring;

[0008] The fixed end of the connecting rod is connected to the water stop block.

[0009] Further, a positioning blind hole is formed in the water stop block, and the fixed end of the connecting rod is placed in the positioning blind hole.

[0010] Further, the fixed end of the connecting rod is connected to the water stop block by welding.

[0011] Further, the connecting plug is of a frustum structure, with the end close to the water stop piece being small and the end far from the water stop piece being large.

[0012] Further, the second docking end of the extension rod is connected to the connecting plug through a first thread structure.

[0013] Further, the first docking end of the connecting rod extends into the installation channel in the connecting plug and is connected to the connecting plug through a second thread structure.

[0014] Further, the connecting rod, the extension rod and the water stop piece are all made of steel.

[0015] Further, the connecting plug is made of PVC.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows: The present utility model provides an integrated device for a building exterior wall composite thermal insulation formwork connector and a tie bolt. After the concrete reaches the form removal strength, it can avoid the grouting hole plugging operation after removing the formwork support system and the inner formwork. It has the advantages of stable structure, convenient operation, construction period saving, and efficiency improvement. Brief Description of the Drawings

[0017] Figure 1 is a structural schematic diagram of the present utility model;

[0018] Figure 2 is a front view of the water stop piece;

[0019] Figure 3 is a structural schematic diagram of the use of the present utility model;

[0020] Reference numerals: 1 - connecting rod; 101 - fixed end; 102 - first docking end; 2 - extension rod; 201 - second docking end; 202 - mounting end; 3 - connecting plug; 4 - water stop sheet; 401 - mounting ring; 402 - water stop block; 403 - support rod; 5 - inner formwork; 6 - composite thermal insulation outer formwork; 7 - wall concrete structure; 8 - wooden secondary joist; 9 - steel pipe main joist; 10 - hill-shaped clamp; 11 - nut. Detailed implementation mode

[0021] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0022] The integrated device of the connecting piece for the composite thermal insulation outer formwork of the building exterior wall and the tie bolt comprises a connecting rod 1 and an extension rod 2 which are coaxially arranged; one end of the connecting rod 1 is a fixed end 101, and the other end is a first docking end 102; one end of the extension rod 2 is a second docking end 201, and the other end is a mounting end 202; the first docking end 102 of the connecting rod 1 is docked and connected with the second docking end 201 of the extension rod 2 through a connecting plug 3; the first docking end 102 of the connecting rod 1 extends into the mounting channel in the connecting plug 3 and is connected with the connecting plug 3; the second docking end 201 of the extension rod 2 extends into the mounting channel in the connecting plug 3 and is detachably connected with the connecting plug 3; a water stop sheet 4 is connected to the fixed end 101 of the connecting rod 1.

[0023] The connecting rod 1 is horizontally installed through the inner formwork 5 and the composite heat-insulating outer formwork 6, and there is a wall pouring space between the inner formwork 5 and the composite heat-insulating outer formwork 6. The water stop piece 4 abuts against the outer side surface of the composite heat-insulating outer formwork 6. The connecting plug 3 is located in the wall pouring space and abuts against the inner side surface of the inner formwork 5. The extension rod 2 passes through the through hole on the inner formwork 5 and is detachably connected to the connecting plug 3. The connecting plug 3 not only plays a role in water stop, but also plays a role in connecting the extension rod 2. The installation end 202 of the extension rod 2 is located outside the inner formwork 5 and is connected to the steel pipe main rib 9 in the inner formwork support system through the U-shaped clamp 10 and the nut 11. The structure of the U-shaped clamp 10 is the prior art. The U-shaped clamp 10 includes a first clamping groove, a second clamping groove and a through hole. The first clamping groove and the second clamping groove are located on the same side of the U-shaped clamp 10, and the through hole is located between the first clamping groove and the second clamping groove. The support system of the inner formwork includes vertically arranged wooden secondary ribs 8 and horizontally arranged steel pipe main ribs 9; the wooden secondary ribs 8 are located outside the inner formwork 5 and abut against the outer side surface of the inner formwork 5; the steel pipe main rib 9 is located on the side of the wooden secondary ribs 8 away from the inner formwork 5 and makes multiple wooden secondary ribs 8 all abut against the outer side surface of the inner formwork 5. The installation end 202 of the extension rod 2 extends out from between two adjacent upper and lower steel pipe main ribs 9 and the through hole of the U-shaped clamp 10. The first clamping groove of the U-shaped clamp 10 is clamped with one of the steel pipe main ribs 9, the second clamping groove of the U-shaped clamp 10 is clamped with the other steel pipe main rib 9, and the nut 11 is installed on the extension rod 2 and locks the U-shaped clamp 10 and the two steel pipe main ribs 9. Threads matching with the nut 11 are provided on the extension rod. Then, concrete is poured into the wall pouring space. After the concrete reaches the form removal strength, the nut 11, the U-shaped clamp 10, the steel pipe main rib 9, the extension rod 2, the wooden secondary rib 8 and the inner formwork 5 are removed, while the connecting plug 3 and the connecting rod 1 are not removed. The finally formed wall concrete structure 7 and the composite heat-insulating outer formwork 6 together serve as the building exterior wall. It can avoid the grouting hole plugging operation after removing the formwork support system and the inner formwork. It has the advantages of stable structure, convenient operation, saving construction period and improving efficiency.

[0024] The water stop piece 4 can be a plate-like structure. Preferably, the water stop piece 4 includes an installation ring 401 arranged coaxially with the connecting rod 1 and a water stop block 402 arranged in the installation ring 401; there is a spacing between the outer peripheral surface of the water stop block 402 and the inner peripheral surface of the installation ring 401, and the water stop block 402 is connected to the installation ring 401 through a support rod 403; multiple support rods 403 are provided, and the multiple support rods 403 are evenly distributed along the circumferential direction of the installation ring 401; the fixed end 101 of the connecting rod 1 is connected to the water stop block 402. One end of the support rod 403 is welded to the installation ring 401, and the other end is welded to the water stop block 402. The water stop piece 4 is a frame structure, which can reduce the weight of the water stop piece 4 compared with the plate-like structure.

[0025] Preferably, a positioning blind hole 4201 is formed in the water stop block 402, and the fixed end 101 of the connecting rod 1 is placed in the positioning blind hole 4201. By providing the positioning blind hole 4201, it is convenient for the positioning installation and connection of the connecting rod 1 and the water stop block 402.

[0026] The fixed end 101 of the connecting rod 1 and the water stop block 402 can be connected through a threaded structure. Preferably, the fixed end 101 of the connecting rod 1 is welded to the water stop block 402.

[0027] Preferably, the connecting plug 3 has a frustum structure, with a smaller end near the water stop sheet 4 and a larger end away from the water stop sheet 4. Specifically, the installation channel is coaxially arranged with the connecting plug 3.

[0028] The second docking end 201 of the extension rod 2 and the connecting plug 3 can be engaged and matched through a first snap-fastening groove structure. Preferably, the second docking end 201 of the extension rod 2 is connected to the connecting plug 3 through a first threaded structure.

[0029] The first docking end 102 of the connecting rod 1 and the connecting plug 3 can be engaged and matched through a second snap-fastening groove structure. Preferably, the first docking end 102 of the connecting rod 1 extends into the installation channel of the connecting plug 3 and is connected to the connecting plug 3 through a second threaded structure.

[0030] The connecting rod 1, the extension rod 2, and the water stop sheet 4 can be made of cemented carbide products. Preferably, the connecting rod 1, the extension rod 2, and the water stop sheet 4 are all made of steel products.

[0031] The connecting plug 3 can be made of hard metal products, rubber products, etc. Preferably, the connecting plug 3 is made of PVC products.

[0032] The embodiments of the specific implementation manners are all preferred embodiments of the present invention, and do not limit the protection scope of the present invention accordingly. Any equivalent changes made according to the structure, shape, and principle of the present invention shall be covered within the protection scope of the present invention.

Claims

1. The integrated device of the building exterior wall composite thermal insulation external formwork connecting piece and the tie bolt is characterized in that: It includes a coaxial arrangement of a connecting rod (1) and an extension rod (2); one end of the connecting rod (1) is a fixed end (101), and the other end is a first docking end (102); one end of the extension rod (2) is a second docking end (201), and the other end is a mounting end (202); the first docking end (102) of the connecting rod (1) is docked and connected to the second docking end (201) of the extension rod (2) through a connecting plug (3); the first docking end (102) of the connecting rod (1) extends into the installation channel in the connecting plug (3) and is connected to the connecting plug (3); the second docking end (201) of the extension rod (2) extends into the installation channel in the connecting plug (3) and is detachably connected to the connecting plug (3); a water stop sheet (4) is connected to the fixed end (101) of the connecting rod (1).

2. The integrated device of the building exterior wall composite thermal insulation external formwork connecting piece and the tie bolt according to claim 1, characterized in that: The water stop sheet (4) includes a mounting ring (401) arranged coaxially with the connecting rod (1), and a water stop block (402) arranged in the mounting ring (401); There is a spacing between the outer peripheral surface of the water stop block (402) and the inner peripheral surface of the mounting ring (401), and the water stop block (402) is connected to the mounting ring (401) through support rods (403); multiple support rods (403) are provided, and the multiple support rods (403) are evenly distributed along the circumferential direction of the mounting ring (401); The fixed end (101) of the connecting rod (1) is connected to the water stop block (402).

3. The integrated device of the building exterior wall composite thermal insulation external formwork connector and the tie bolt according to claim 2, characterized in that: A positioning blind hole (4201) is formed in the water stop block (402), and the fixed end (101) of the connecting rod (1) is placed in the positioning blind hole (4201).

4. The integrated device of the building exterior wall composite thermal insulation external formwork connecting piece and the tie bolt according to claim 2, characterized in that: The fixed end (101) of the connecting rod (1) is welded to the water stop block (402).

5. The integrated device of the building exterior wall composite thermal insulation external formwork connector and the tie bolt according to claim 1, characterized in that: The connecting plug (3) has a frustum structure, with the end close to the water stop sheet (4) being small and the end far from the water stop sheet (4) being large.

6. The integrated device of the building exterior wall composite thermal insulation external formwork connecting piece and the tie bolt according to claim 1, characterized in that: The second docking end (201) of the extension rod (2) is connected to the connecting plug (3) through a first thread structure.

7. The integrated device of the building exterior wall composite thermal insulation external formwork connecting piece and the tie bolt according to claim 1, characterized in that: The first docking end (102) of the connecting rod (1) extends into the installation channel in the connecting plug (3) and is connected to the connecting plug (3) through a second thread structure.

8. The integrated device of the building exterior wall composite thermal insulation external formwork connecting piece and the tie bolt according to claim 1, characterized in that: The connecting rod (1), the extension rod (2) and the water stop sheet (4) are all made of steel products.

9. The integrated device of the building exterior wall composite thermal insulation external formwork connecting piece and the tie bolt according to claim 1, characterized in that: The connecting plug (3) is made of PVC products.

Images