Supporting structure in reserved hole and construction device

Abstract

The utility model discloses a reserved hole inner supporting structure and a construction device, and relates to the technical field of building construction.The reserved hole inner supporting structure comprises a center shaft, a plurality of telescopic supporting rods and an annular supporting plate, the center shaft is provided with a center hole in the axial direction, and a plurality of first mounting holes are evenly distributed in the circumferential direction of the center shaft; each telescopic supporting rod is provided with a fixed part and a movable part, the fixed parts are arranged in the mounting holes, the multiple telescopic supporting rods are annularly arranged on the center shaft, and the side, facing the center shaft, of the annular supporting plate is connected with the multiple movable parts; according to the technical scheme, the supporting structure in the reserved hole is placed in the reserved hole, the multiple telescopic supporting rods provide supporting force for the annular supporting plate, and the multiple telescopic supporting rods jointly form the radial structure; the force acting on the annular support plate can be uniformly distributed to each part of the telescopic support rod, and local stress concentration is reduced, so that the deformation resistance is improved, and the deformation of the reserved hole is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to an internal support structure and a construction device for reserved openings. Background Technique

[0002] With the increasingly perfect formwork support technology system in construction projects, the quality requirements for cast-in-place structures have also increased accordingly. For municipal engineering, structures such as underground comprehensive pipe corridors, jacking wells, and inspection wells involve a large number of circular reserved openings. A reserved opening is a hole pre-made in a structure during a construction project for subsequent installation of pipelines, cables, ventilation equipment, etc. These openings are formed during the construction process according to design requirements to ensure that the integrity and safety of the structure are not affected. Reserved openings usually require precise dimensions and positions to fit the equipment or components to be installed later. Correctly setting reserved openings is crucial for ensuring building functions and construction quality.

[0003] In related technologies, since most reserved openings are in shear walls or roof slabs and bear relatively large pressures, during the construction of reserved openings, formwork support needs to be carried out, with a focus on hole positioning. When setting up the formwork, multiple small-sized wooden formwork pieces are often spliced together. However, the compressive capacity of the formwork against external pressure is often ignored. Therefore, under the action of construction loads, the formwork is prone to deformation, resulting in frequent quality problems such as serious formwork displacement and poor appearance quality of the reserved openings. A large amount of labor needs to be invested in chiseling and repairing later, resulting in increased construction costs and waste of resources. Content of the Utility Model

[0004] The main purpose of the utility model is to propose an internal support structure and a construction device for reserved openings, aiming to provide an internal support structure for reserved openings that can withstand relatively large pressures and thus avoid secondary construction of the reserved openings later.

[0005] To achieve the above object, the internal support structure for reserved openings proposed by the utility model includes:

[0006] A central axis, which is provided with a central hole along its axial direction, and a plurality of first mounting holes are evenly distributed circumferentially on the central axis;

[0007] A plurality of telescopic support rods, each of the telescopic support rods has a fixed part and a movable part, the fixed part is arranged in the mounting hole, and the plurality of telescopic support rods are arranged around the central axis in a ring shape; and

[0008] An annular support plate, one side of the annular support plate facing the central axis is connected to the plurality of movable parts.

[0009] In an embodiment, the fixed part is a mounting pipe, the movable part is a support column, an external thread is formed at one end of the support column, and the support column is screwed to the mounting pipe.

[0010] In one embodiment, the inner support structure of the reserved hole further includes an annular load-bearing frame, the annular load-bearing frame is provided with a plurality of second mounting holes in a ring shape, and the support columns are screwed to the second mounting holes.

[0011] In one embodiment, the annular load-bearing frame includes a limiting nut, the limiting nut is rotatably arranged on the annular load-bearing frame, the limiting nut is formed with a through hole, the through hole communicates with the inside of the mounting pipe, and the support column is screwed to the through hole.

[0012] In one embodiment, an arc-shaped abutting plate is provided at one end of the movable part away from the fixed part, and the arc-shaped abutting plate abuts against the inner side wall of the annular support plate.

[0013] In one embodiment, the mounting pipe is a galvanized steel pipe.

[0014] In one embodiment, the diameter of the mounting pipe is 15 mm;

[0015] The diameter of the support column is 10 mm.

[0016] In one embodiment, the inner support structure of the reserved hole includes eight telescopic support rods, and the included angle between every two adjacent telescopic support rods is 45°.

[0017] In one embodiment, the inner support structure of the reserved hole further includes a plugging member, and a part of the structure of the plugging member is clamped in the central hole and covers the central hole.

[0018] The present utility model also proposes a construction device, including:

[0019] Inner support structures of reserved holes, a plurality of the inner support structures of reserved holes are sequentially arranged along the axial direction of the central axis; and

[0020] Connecting rods, the connecting rods are inserted through the central holes of the inner support structures of the reserved holes.

[0021] In the technical solution of the present utility model, a support structure and a construction device for a reserved hole are proposed. Among them, the support structure for the reserved hole includes a central axis, a plurality of telescopic support rods, and an annular support plate. A plurality of first mounting holes are evenly distributed circumferentially on the central axis. The plurality of telescopic support rods are arranged in the plurality of first mounting holes and radially expand around to form a large circle. The annular support plate is provided at one end of the plurality of telescopic support rods away from the central axis. By placing the support structure for the reserved hole in the reserved hole, the outer side wall of the annular support plate is in contact with the inner wall of the reserved hole. The plurality of telescopic support rods provide support force to the annular support plate. The plurality of telescopic support rods together form a radial structure, which can evenly distribute the force acting on the annular support plate to each part of the telescopic support rods, reduce local stress concentration, thereby improving the anti-deformation ability of the inner support structure and preventing the reserved hole from deforming. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on the structures shown in these drawings.

[0023] Figure 1 FIG. is a schematic structural diagram of an embodiment of the support structure for the reserved hole provided by the present utility model;

[0024] Figure 2 is Figure 1 a schematic structural diagram of the telescopic support rod in;

[0025] Figure 3 FIG. is a schematic structural diagram of the construction device provided by the present utility model;

[0026] Figure 4 FIG. is a schematic structural diagram of the plugging member;

[0027] Figure 5 is Figure 1 a schematic structural diagram of the central axis in.

[0028] Explanation of the reference numerals in the drawings:

[0029] 100, support structure for the reserved hole; 1, central axis; 11, central hole; 12, first mounting hole; 2, telescopic support rod; 21, fixed part; 211, mounting tube; 22, movable part; 221, support column; 23, arc-shaped abutting plate; 3, annular support plate; 4, annular load-bearing frame; 41, second mounting hole; 42, limiting nut;

[0030] 1000, Construction device; 200, Connecting rod; 300, Sealing member.

[0031] The realization of the purpose, functional features and advantages of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0032] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0033] It should be noted that if there are directional indications (such as up, down, left, right, front, back...) involved in the embodiments of the present utility model, the directional indications are only used to explain the relative position relationship and movement conditions between components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0034] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present utility model, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution where A and B are satisfied simultaneously. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0035] As the formwork support technology system in construction projects becomes more and more perfect, the quality requirements for cast-in-place structures are also increasing. For municipal engineering, structures such as underground integrated pipe galleries, jacking wells, and inspection wells involve a large number of circular reserved holes. Reserved holes are holes pre-made in the structure during construction for subsequent installation of pipelines, cables, ventilation equipment, etc. These holes are formed during the construction process according to the design requirements to ensure that the integrity and safety of the structure are not affected. Reserved holes usually require precise dimensions and positions to fit the equipment or components to be installed later. Correctly setting the reserved holes is crucial for ensuring the building function and construction quality.

[0036] In the related art, since most of the reserved holes are in shear walls or roof slabs and bear a large amount of pressure, formwork support needs to be carried out during the construction of reserved holes. Focusing on hole positioning, multiple small-sized wooden formworks are often spliced together during formwork erection, and the compressive capacity of the formwork against external pressure is often overlooked. Therefore, the formwork is prone to deformation under the action of construction loads, resulting in frequent quality problems such as serious formwork displacement of the reserved holes and poor appearance quality. A large amount of manual labor needs to be invested in later chiseling and repair, resulting in increased construction costs and waste of resources.

[0037] To solve the above problems, the present utility model proposes an internal support structure for reserved holes, aiming to provide an internal support structure for reserved holes that can withstand a large pressure, thereby avoiding secondary construction of the reserved holes. Figures 1 to 5 FIG. is a schematic structural diagram of an embodiment provided by the internal support structure for reserved holes of the present utility model.

[0038] Please refer to Figures 1 to 5 , the present utility model proposes an internal support structure 100 for reserved holes, including a central shaft 1, a plurality of telescopic support rods 2, and an annular support plate 3. The central shaft 1 is axially provided with a central hole 11, and a plurality of first mounting holes 12 are evenly distributed in the circumferential direction of the central shaft 1. Each telescopic support rod has a fixed part 21 and a movable part 22. The fixed part 21 is arranged in the mounting hole. A plurality of telescopic support rods 2 are arranged around the central shaft 1 in a ring shape, and one side of the annular support plate 3 facing the central shaft 1 is connected to a plurality of movable parts 22.

[0039] In the technical solution of the present utility model, an internal support structure 100 for reserved holes and a construction device 1000 are proposed. Among them, the internal support structure 100 for reserved holes includes a central shaft 1, a plurality of telescopic support rods 2, and an annular support plate 3. A plurality of first mounting holes 12 are evenly distributed in the circumferential direction of the central shaft 1. A plurality of telescopic support rods 2 are arranged in a plurality of first mounting holes 12 and radially expand around to form a large circle. The annular support plate 3 is arranged at one end of a plurality of telescopic support rods 2 away from the central shaft 1. By placing the internal support structure 100 for reserved holes in the reserved hole, the outer side wall of the annular support plate 3 is in contact with the inner wall of the reserved hole. A plurality of telescopic support rods 2 provide support force to the annular support plate 3. A plurality of telescopic support rods 2 together form a radial structure, which can evenly distribute the force acting on the annular support plate 3 to each part of the telescopic support rods 2, reduce local stress concentration, thereby improving the anti-deformation ability of the internal support structure and preventing the reserved hole from deforming.

[0040] In the technical solution of the present utility model, to improve the general applicability of the device, the support rod is designed to be telescopic, so that it can be adapted to the support operation of reserved holes with different diameters. To accommodate the telescopic support column 221, the fixed part 21 is an installation pipe 211. Specifically, please further refer to Figure 1 andFigure 2 The installation pipe 211 is designed with a hollow structure. When a shorter part of the support column 221 extends out, a part of the support column 221 is accommodated in the installation pipe 211. To ensure that the support rod can achieve self-locking to a certain extent, the inner side wall of the installation pipe 211 is provided with internal threads, and one end of the support column 221 close to the installation pipe 211 is provided with partial external threads. The support column 221 is installed in the installation pipe 211 by screwing. When the support rod extends to the fixed position, due to the friction between the threads and the fact that multiple support rods are provided, the stress is evenly distributed and will not be concentrated, which can ensure that the telescopic support rod 2 reliably supports the annular support plate 3.

[0041] Furthermore, since the pressure inside the reserved hole is relatively large, to provide sufficient support force, the support structure 100 inside the reserved hole further includes an annular bearing frame 4. The annular bearing frame 4 is provided with second installation holes 41 that are annularly arranged and match the number of telescopic support rods 2. Threads are provided inside the second installation holes 41 and are screwed with the support column 221. When the support column 221 is subjected to radial pressure, the annular bearing frame 4 will evenly distribute the pressure along the radial direction, thereby preventing stress concentration. It should be noted that the annular bearing frame 4 can be a steel pipe or a polymer material composite pipe, and the present utility model does not limit this. In an embodiment of the present utility model, the annular bearing frame 4 is made of a galvanized steel pipe. The use of a galvanized steel pipe for the bearing frame has many advantages: First, the galvanized layer provides additional corrosion resistance for the steel pipe, enabling it to have a longer service life in a humid or corrosive environment inside the reserved hole; Second, the surface of the galvanized steel pipe is smooth, facilitating installation and maintenance; Third, the strength and stiffness of the galvanized material are relatively high, and it can effectively bear and disperse the structural load; Fourth, the galvanized steel pipe has good welding and processing properties, facilitating the realization of various complex structural designs; Finally, the aesthetics of the galvanized steel pipe is also relatively high, and it can meet certain aesthetic requirements without additional painting after surface treatment.

[0042] To facilitate the user to adjust the telescopic support rod 2 so that its expansion and contraction adapt to reserved holes of different sizes, the annular bearing frame 4 is provided with a limit nut 42. Specifically, please further refer to Figure 2 The limit nut 42 is rotatably installed on the annular bearing frame 4 and is screwed with the support column 221. The user realizes the outward support and inward retraction of the support column 221 by rotating the limit nut 42.

[0043] To facilitate the installation and fixation of the annular support plate 3, an arc-shaped abutting plate 23 is provided at one end of the movable part 22 away from the fixed part 21. Specifically, please further refer to Figure 1, the arc-shaped abutting plate 23 abuts against the inner wall of the annular support plate 3. It should be noted that the two can be connected by a screwing and fixing method or a clamping method. The present invention does not limit this. In an embodiment of the present invention, the arc-shaped abutting plate 23 and the annular support plate 3 are fastened with bolts. In an embodiment of the present invention, the central shaft 1 is provided with eight first mounting holes 12, and a total of eight telescopic support rods 2 jointly provide support. The included angle between every two adjacent support rods is 45°, and they are evenly spaced. The diameter of the mounting tube 211 is 15 mm, and the diameter of the support column 221 is 10 mm. To prevent soil from entering the central hole 11 and causing blockage of the central hole 11, the in-situ support structure 100 for the reserved opening further includes a plugging member 300. Specifically, please further refer to Figure 4 , one end of the plugging member 300 is provided with a cover plate, and the other end is inserted into the central hole 11. The cover plate can cover the central hole 11, thereby avoiding blockage of the central hole 11 by impurities.

[0044] The present invention also provides a construction device 1000, which includes an in-situ support structure 100 for the reserved opening and a connecting rod 200. A plurality of in-situ support structures 100 for the reserved opening are arranged in sequence along the axial direction of the central shaft 1. The connecting rod 200 passes through the central holes 11 of each in-situ support structure 100 for the reserved opening. The specific structure of the in-situ support structure 100 for the reserved opening refers to the above embodiments. Since this construction device 1000 adopts all the technical solutions of the above all embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, and will not be elaborated here one by one.

[0045] The above description is only an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or direct / indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims

1. A support structure (100) in a reserved hole, characterized in that: include: A central shaft (1), wherein the central shaft (1) is provided with a central hole (11) along the axial direction, and a plurality of first mounting holes (12) are evenly distributed in the circumferential direction of the central shaft (1); a plurality of telescopic support rods (2), each of the telescopic support rods having a fixed portion (21) and a movable portion (22), the fixed portion (21) being arranged in the mounting hole, and the plurality of telescopic support rods (2) being arranged around the central axis (1); and an annular support plate (3), wherein a side of the annular support plate (3) facing the central axis (1) is connected to the plurality of movable parts (22); The fixed part (21) is a mounting tube (211), the movable part (22) is a support column (221), one end of the support column (221) is formed with an external thread, and the support column (221) is threadedly connected to the mounting tube (211); The reserved hole inner support structure (100) further comprises an annular load-bearing frame (4), the annular load-bearing frame (4) is provided with a plurality of second mounting holes (41) in a circle, and the support columns (221) are screwed to the second mounting holes (41).

2. The reserved hole inner support structure (100) according to claim 1, characterized in that: The annular load-bearing frame (4) comprises a limiting nut (42), the limiting nut (42) being rotatably arranged on the annular load-bearing frame (4), the limiting nut (42) being formed with a through hole, the through hole being connected to the interior of the mounting tube (211), and the supporting column (221) being screwed to the through hole.

3. The reserved hole inner support structure (100) according to any one of claims 1 to 2, characterized in that: An arc-shaped abutment plate (23) is provided at one end of the movable portion (22) away from the fixed portion (21), and the arc-shaped abutment plate (23) abuts against the inner side wall of the annular support plate (3).

4. The reserved hole inner support structure (100) according to claim 1, characterized in that: The installation pipe (211) is a galvanized steel pipe.

5. The reserved hole inner support structure (100) according to claim 1, characterized in that: The diameter of the mounting tube (211) is 15 mm; The diameter of the support column (221) is 10 mm.

6. The reserved hole inner support structure (100) according to any one of claims 1 to 2, characterized in that: The support structure (100) in the reserved hole comprises eight retractable support rods (2), and the angle between every two adjacent retractable support rods (2) is 45°.

7. The reserved hole inner support structure (100) according to any one of claims 1 to 2, characterized in that: The reserved hole inner support structure (100) further comprises a blocking piece (300), a part of the structure of which is snap-fitted to the central hole (11) and covers the central hole (11).

8. A construction device (1000), characterized in that: include: A plurality of reserved hole inner support structures (100) according to any one of claims 1 to 7, wherein the plurality of reserved hole inner support structures (100) are sequentially arranged along the axial direction of the central axis (1); and A connecting rod (200) is inserted into the central hole (11) of the supporting structure (100) in each of the reserved holes.

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