Fire-retardant plugging auxiliary device for hanging hole in sleeve

Abstract

The utility model discloses a fire-retardant plugging auxiliary device for a hanging hole in a sleeve, relates to the technical field of building construction, and solves the problem that a template for plugging the hanging hole is inconvenient to support in the prior art. The device comprises a pair of plugging templates, wherein the two plugging templates are adjustably connected through a connecting structure; a plurality of traction hooks are distributed on the plugging template, and pull ropes are connected to the traction hooks respectively; semicircular grooves are formed in the opposite sides of the two plugging templates. According to the pipeline plugging device, the plugging templates are arranged and matched with the semicircular grooves, so that the pipeline plugging device can be clamped on a pipeline during use, the hook is arranged to be matched with the pull rope to pull from the position above the hanging hole during assembly, the two plugging templates are assembled and matched and fixed with the pipeline in cooperation with the connecting structure, and finally the plugging purpose is achieved; a support does not need to be arranged in the space below the hanging hole, the supporting difficulty and labor intensity in the installation process are lowered, and the requirement for the space below the hanging hole is lowered.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to an auxiliary device for fire-blocking and sealing of internal hanging holes in casings. Background Technology

[0002] Internal sleeve sealing refers to a construction method where, after the installation of pipes (such as drainage pipes and fire-fighting pipes) is completed, pre-embedded sleeve structures are used to seal the reserved openings in the floor slab in layers. Due to the limited space required for internal sleeve sealing, it is often impossible to place a working scaffold below; instead, wooden boards or foam are used from above for fixation, resulting in incomplete sealing and a risk of leakage later. Internal sleeve sealing reduces construction difficulty and the risk of leakage. Furthermore, the sealing of these openings must meet fire safety requirements; therefore, designing auxiliary fire-resistant sealing devices for internal sleeve sealing is essential.

[0003] Chinese utility model patent CN219569568U discloses a detachable retractable hoisting tool and construction equipment. The hoisting tool includes a support rod placed on a support surface and retractable vertically to adjust its height; a clamping part detachably connected to the top of the support rod for clamping pipes; and a supporting top plate detachably connected to the top of the clamping part for supporting the formwork below, with a pre-sized hole at the center of the top plate to match the hoisting hole on the formwork. This hoisting tool uses a retractable support rod to support the clamping part and the supporting top plate. During use, the retractable support rod, clamping part, and supporting top plate can be adjusted and fixed according to actual conditions, and the weight can be effectively calculated to prevent insufficient support due to vertical gravity during hoisting, while also avoiding significant shaking during concrete pouring. It can be disassembled and reused after use, avoiding the phenomenon of hoisting holes in different floor areas at different elevations in a single operation.

[0004] In this solution, the clamping part needs to be supported from the ground by a support rod. The required support rod is quite long, and the space below the hoisting hole is narrow, making it inconvenient to support and use the existing equipment. Utility Model Content

[0005] To address the shortcomings in the aforementioned background technology, this utility model proposes an auxiliary device for fire-resistant sealing of hanging holes inside casings, which solves the problem of inconvenient template support for sealing hanging holes in the prior art.

[0006] The technical solution of this utility model is implemented as follows: an auxiliary device for fire-resistant sealing of a casing hole includes a pair of sealing templates, which are adjustablely connected by a connecting structure; several traction hooks are distributed on the sealing templates, and pull ropes are connected to the traction hooks respectively; a semi-circular groove is opened on the opposite side of the two sealing templates.

[0007] Preferably, the sealing template includes a metal shell filled with a flame-retardant expanding material. The traction hook is a Z-shaped hook, and the sealing template has paired hinge seats with through holes. The two ends of the Z-shaped hook are respectively rotatably inserted into the through holes. A foam layer is provided on the inner ring surface of the semi-circular groove.

[0008] Preferably, the connection structure includes a fixing plate fixedly mounted on one of the sealing templates, the fixing plate having an opening, and the sealing template having a threaded hole. The two sealing templates are connected by a locking bolt passing through the threaded hole and the opening. The opening is an elongated slotted hole.

[0009] Preferably, the sidewalls of the sealing templates on both sides of the semi-circular groove are respectively provided with insertion slots and insertion hooks, and both insertion slots and insertion hooks are provided with guide bevels. A sealing ring is provided on the upper plate surface of the sealing template, and a sealing gasket is provided on the opposite surfaces of the two sealing templates.

[0010] Preferably, the pull rope is made of metal wire. The upper end of the pull rope is connected to a tension spring, and the upper end of the tension spring is connected to the gantry crane.

[0011] The beneficial effects of this utility model are as follows: By setting a sealing template with a semi-circular groove, it can clamp onto the pipe during use. The hook and pull rope allow for pulling from above the hanging hole during assembly. The connecting structure facilitates the assembly of the two sealing templates and their fit and fixation to the pipe, ultimately achieving the sealing purpose. The operation is convenient and reliable, eliminating the need for support in the space below the hanging hole, reducing the difficulty and labor intensity of support during installation, and lowering the space requirements below the hanging hole. Even in narrow spaces, stable sealing of the hanging hole can be achieved. Furthermore, by setting a plug-in groove and plug-in hook, the guide slope, combined with the tightening bolts, allows for precise fitting between the two sealing templates, ensuring a stable connection and convenient operation. Attached Figure Description

[0012] To more clearly illustrate the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the combined structure of the sealing template of this utility model;

[0014] Figure 2 This is a schematic diagram of the sealing template separation structure of this utility model;

[0015] Figure 3 This is a schematic diagram of the cross-sectional structure of the sealing template of this utility model;

[0016] Figure 4 This is a schematic diagram of the structure of the upper end of the pull rope of this utility model;

[0017] In the diagram: 1: sealing template, 2: connecting structure, 3: traction hook, 4: pull rope, 5: semi-circular groove, 6: hinge seat, 8: fixing plate, 9: opening, 10: insertion groove, 11: insertion hook, 12: guide slope, 13: sealing ring, 14: sealing gasket, 15: tension spring, 16: gantry crane. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] like Figure 1 , 2 As shown in Embodiment 1, an auxiliary device for fire-stopping a pipe hole includes a pair of sealing templates 1, which are adjustablely connected by a connecting structure 2. Several traction hooks 3 are distributed on each sealing template 1, and pull ropes 4 are connected to each hook 3. The hooks, in conjunction with the pull ropes, allow for pulling from above the pipe hole during assembly. This, combined with the connecting structure, enables the assembly of the two sealing templates and their fit and fixation with the pipe, ultimately achieving the sealing purpose. Semi-circular grooves 5 are formed on opposite sides of the two sealing templates 1, allowing them to clamp onto the pipe during use.

[0020] This embodiment eliminates the need for supports in the space below the suspended opening. The sealing template is placed under the opening from the floor slab above and secured with ropes to prevent it from falling. The position and orientation of the two sealing templates are adjusted so that the two semi-circular grooves fit snugly against the pipe on both sides inside the opening. A connecting structure secures the templates to the pipe, preventing slippage and ultimately sealing the opening. This device eliminates the need for existing supports, reducing installation difficulty and labor intensity, and minimizing space requirements below the opening. Even in narrow spaces, stable sealing is possible without supports, making operation convenient and reliable. After sealing, grouting is performed. Before injecting concrete grout, the ropes can be removed from the traction hooks, or the exposed ropes can be cut after pouring.

[0021] As a further specific implementation, in this embodiment, the sealing template 1 includes a metal shell, and the metal shell is filled with a flame-retardant expanding material. By using a flame-retardant expanding material, the flame-retardant capability of the sealing template can be improved. Conventional flame-retardant expanding materials such as sodium aluminum silicate and calcium aluminum phosphate can be selected.

[0022] In this embodiment, the traction hook 3 is a U-shaped hook. The sealing template 1 is provided with a pair of hinge seats 6, and the hinge seats 6 are provided with through holes. The two ends of the U-shaped hook are respectively rotated and inserted into the through holes. The hinge method allows for easy changes in the orientation of the traction hook, maintaining uniform force during the pulling process.

[0023] Furthermore, in order to make the semi-circular groove fit more tightly with the pipe, a foam layer is provided on the inner ring surface of the semi-circular groove 5, so that when the two sealing templates are clamped on the pipe, the foam layer fills the gap between the outer wall of the pipe and the inner wall of the semi-circular groove.

[0024] Example 2: An auxiliary device for fire-resistant sealing of a casing hole. Based on Example 1, the connecting structure 2 includes a fixing piece 8 fixedly mounted on one of the sealing templates 1. The fixing piece 8 has an opening 9, and the sealing template 1 has a threaded hole. The two sealing templates 1 are connected by a locking bolt passing through the threaded hole and the opening 9. In this example, the fixing piece is a long metal strip, welded or bolted to the top surface of the sealing template. Specifically, in this example, the opening 9 is a long, narrow hole, which provides fine-tuning space along the length of the locking bolt.

[0025] Example 3: A fire-stopping auxiliary device for the inner hole of a casing, based on Example 2, such as... Figure 3 As shown, the sealing template 1 on both sides of the semi-circular groove 5 is provided with an insertion groove 10 and an insertion hook 11, respectively. Both the insertion groove 10 and the insertion hook 11 are provided with guide slopes 12. The insertion groove and the insertion hook can achieve a precise fit between the two sealing templates under the action of the guide slope and in conjunction with the tightening of the locking bolt, resulting in a stable connection and convenient operation. Specifically, in this embodiment, the insertion hook is welded and fixed to the side wall of the sealing template, with the bent part facing upwards. The insertion groove is L-shaped, which can meet the insertion and movement of the insertion hook. When the insertion hook is inserted into the insertion groove, the guide slopes of the two cooperate. During the tightening of the locking bolt, the upper surfaces of the two sealing templates gradually become flush. During this process, the insertion hook moves upward relative to the insertion groove. At the same time, under the guidance of the guide slope, the insertion hook slides synchronously into the insertion groove, thereby shortening the gap between the two sealing templates and pressing them together until the upper surfaces of the two sealing templates are completely flush. The locking bolt presses the fixing piece onto the other sealing template.

[0026] As a further specific implementation, a sealing ring 13 is provided on the upper plate surface of the sealing template 1, thereby enabling better sealing when the sealing template comes into contact with the floor slab where the hanging hole is located. Sealing gaskets 14 are provided on the opposing surfaces of the two sealing templates 1; during the tightening of the locking bolts, the sealing gaskets are compressed, achieving a seal. The sealing method used in this embodiment can achieve a seal during the grouting process after the hanging hole is sealed, preventing grout leakage.

[0027] Example 4: A fire-stopping auxiliary device for the inner hole of a casing. Based on Example 3, the pull rope 4 is made of metal wire, specifically conventional iron wire can be used for connection.

[0028] As a further optional implementation, for ease of operation, such as Figure 4 As shown, the upper end of the pull rope 4 is connected to the tension spring 15, and the upper end of the tension spring 15 is provided with a hook 17, which is connected to the gantry crane 16. Before placing the sealing template, the gantry crane is placed above the opening, and then the hook at one end of the tension spring is hung on the gantry crane. The sealing template is then passed through the opening and placed below it. At this time, the tension spring is stretched, and under the contraction force of the tension spring, the sealing template is pulled and adhered to the floor slab where the opening is located, facilitating the connection of the fixing plates and locking bolts. The gantry crane can be made of conventional angle iron or welded steel pipe supports, which are reusable. This saves the workers from the additional stretching and tightening operations required during the installation of the sealing template.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An auxiliary device for fire-stopping and sealing inside a casing hole, characterized in that: It includes a pair of sealing templates (1), which are tunably connected by a connecting structure (2); several traction hooks (3) are distributed on the sealing templates (1), and pull ropes (4) are connected to the traction hooks (3); a semi-circular groove (5) is opened on the opposite side of the two sealing templates (1).

2. The fire containment casing collar location auxiliary device of claim 1, wherein: The sealing template (1) includes a metal shell, and the metal shell is filled with flame-retardant expansion material.

3. The fire containment casing collar location auxiliary device of claim 2, wherein: The traction hook (3) is a Z-shaped hook. The sealing template (1) is provided with a pair of hinge seats (6). The hinge seats (6) are provided with through holes. The two ends of the Z-shaped hook are respectively rotated and inserted into the through holes.

4. The fire-rated casing hole auxiliary device of claim 3, wherein: A foam layer is provided on the inner ring surface of the semi-circular groove (5).

5. The fire containment packer assist device of any one of claims 1 to 4, wherein: The connection structure (2) includes a fixing piece (8) fixed on one of the sealing templates (1), the fixing piece (8) has an opening (9), the sealing template (1) has a threaded hole, and the two sealing templates (1) are connected by a locking bolt passing between the threaded hole and the opening (9).

6. The auxiliary fire containment device for a borehole within a casing according to claim 5, wherein: The opening (9) is a long, narrow waist-shaped opening.

7. The fire containment cap assist device of any one of claims 1-4, 6, wherein: The sealing template (1) on both sides of the semi-circular groove (5) is provided with a plug groove (10) and a plug hook (11), and both the plug groove (10) and the plug hook (11) are provided with a guide slope (12).

8. The fire-blocking casing collar location auxiliary device of claim 7, wherein: The sealing template (1) has a sealing ring (13) on its upper plate surface and a sealing gasket (14) on the opposite surfaces of the two sealing templates (1).

9. The auxiliary fire containment device for a bellhole in a cased hole according to claim 8, wherein: The pull rope (4) is made of metal wire.

10. The auxiliary fire containment device for a bellhole in a cased hole according to claim 9, wherein: The upper end of the pull rope (4) is connected to the tension spring (15), and the upper end of the tension spring (15) is connected to the gantry crane (16).

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