Precise positioning mold for reserved hole

Abstract

The utility model provides an accurate positioning mold for a reserved hole, and belongs to the technical field of building construction. The mold comprises an outer sleeve, an inner sleeve, an outer plate, an inner plate, a bolt and a lifting device, the outer plate and the inner plate are respectively connected with the outer sleeve and are correspondingly provided with a plurality of groups of holes, and the center of one group of holes coincides with the axis of the outer sleeve; each group of holes are communicated through an inner sleeve to form a through hole; the bolt penetrates through the inner sleeve; the lifting device is movably arranged on the outer sleeve; the outer sleeve and the inner sleeve are both made of round steel pipes. According to the utility model, the outer sleeve and the inner sleeve which are made of steel pipes are adopted for hole reservation, the reserved hole position is accurate, and the forming quality is good; meanwhile, mounting and dismounting are convenient, and labor and construction period are saved; all the components are made of common materials, are easy to manufacture and low in machining cost and can be repeatedly used, and the cost is further reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction, and in particular relates to a precise positioning mold for a reserved hole. Background Art

[0002] In cast-in-place concrete building structures, plastic sleeves are usually used as molds for reserved openings. Iron wires and nails are used to temporarily fix the plastic sleeves during use. However, when pouring concrete, the iron wires and nails are easily damaged or the plastic sleeves are deformed or offset, which ultimately leads to inaccurate reserved opening positions and difficulty in meeting construction requirements for subsequent pipeline installation accuracy. At the same time, the plastic sleeves are difficult to remove and are often left at the openings, resulting in material waste. In addition, the plastic sleeve installation process is cumbersome and is not conducive to saving construction time. Utility Model Content

[0003] In order to solve the above technical problems, the utility model provides a reserved hole precise positioning mold, which realizes the precise positioning of the reserved hole and ensures the installation accuracy of the pipeline. At the same time, it is easy to install and disassemble and can be used cyclically.

[0004] The technical solution adopted by the utility model is:

[0005] A reserved hole precise positioning mold, comprising an outer sleeve, an inner sleeve, an outer plate, an inner plate, bolts and a lifting device;

[0006] The outer plate and the inner plate are arranged relative to the outer sleeve and are provided with a plurality of groups of relative holes, wherein the center of one group of holes coincides with the axis of the outer sleeve; each group of holes is connected through the inner sleeve to form a through hole; the bolt passes through the inner sleeve; and the pulling device is movably arranged on the outside of the outer sleeve.

[0007] Furthermore, the ends of the outer sleeve and the inner sleeve are flush.

[0008] Furthermore, the outer plate is flush with one end of the outer sleeve, and the inner plate is located on the inner side of the opening of the other end of the outer sleeve.

[0009] Furthermore, the holes are in at least three groups.

[0010] Furthermore, the holes are dispersedly arranged along the radial direction of the outer plate and the inner plate.

[0011] Furthermore, the lifting device is U-shaped, and its two ends are fixed to the two sides of the outer sleeve through pins and are close to the outer plate.

[0012] Furthermore, the outer sleeve and the inner sleeve are both made of round steel pipes.

[0013] Furthermore, the head of the bolt is located outside the outer plate.

[0014] Furthermore, the diameter of the inner sleeve is no more than 2 mm larger than the diameter of the bolt, and the length of the bolt is at least 20 mm longer than the length of the outer sleeve.

[0015] The advantages and positive effects of the utility model are as follows: the utility model uses an outer sleeve and an inner sleeve made of steel pipe to reserve a hole, the reserved hole position is accurate and the molding quality is good; at the same time, it is easy to install and disassemble, which is beneficial to saving labor and construction period; each component is made of common materials, is easy to manufacture, has low processing cost, can be repeatedly used, and further reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a cross-sectional schematic diagram of a specific embodiment of the utility model;

[0017] Figure 2 It is a top view of a construction method of a specific embodiment of the utility model.

[0018] In the figure:

[0019] 1. Outer sleeve 2. Outer plate 201. Holes

[0020] 3. Inner casing 4. Inner plate 5. Bolts

[0021] 6. Lifting device 7. Structural formwork DETAILED DESCRIPTION

[0022] The embodiments of the present utility model are described below in conjunction with the accompanying drawings.

[0023] like Figure 1-Figure 2 As shown, the utility model proposes a mold for accurately positioning reserved holes, including an outer sleeve 1, an inner sleeve 3, an outer plate 2, an inner plate 4, bolts 5 and a lifting device 6; wherein the outer sleeve 1 and the inner sleeve 3 are hollow components with two openings, the outer plate 2 and the inner plate 4 are relatively arranged on the outer sleeve 1, and are respectively connected with the outer sleeve 1 to form a barrel shape; the outer plate 2 and the inner plate 4 are provided with a plurality of groups of relative holes 201, and each group of holes 201 is connected through the inner sleeve 3 to form a through hole; the center of one group of holes 201 coincides with the axis of the outer sleeve 1; the bolts 5 are arranged one by one with the inner sleeve 3, and penetrate the inner sleeve 3, so as to fix the entire mold to the structural template 7; the lifting device 6 is movably arranged on the outside of the outer sleeve 1, so as to take out the mold after the concrete pouring is completed.

[0024] In this embodiment, the outer sleeve 1 is used to isolate the concrete at that part to form a reserved hole to realize the pipe installation in the subsequent steps; the center of one group of holes 201 coincides with the axis of the outer sleeve 1, and it can be understood that the inner sleeve 3 connected to the group of holes 201 also coincides with the axis of the outer sleeve 1; its purpose is that when using this mold, the bolts 5 can be controlled to pass through the holes 201 of the outer plate 2, the inner sleeve 3 and the holes 201 of the inner plate 4, and then aligned with the center position of the pipe to be installed, thereby realizing accurate positioning of the reserved hole; in addition, multiple groups of inner sleeves 3 and bolts 5 are provided, and the mold is stably fixed to the structural template 7 by the bolts 5, which is not easy to deform and deflect, thereby ensuring accurate positioning.

[0025] In a specific embodiment, in order to ensure that the mold has sufficient rigidity and is not easily deformed during the concrete pouring process, the outer sleeve 1 and the inner sleeve 3 are both made of round steel pipes, the inner plate 4 and the outer plate 2 are made of steel plates, the inner plate 4 and the outer plate 2 are respectively welded to the outer sleeve 1, and the inner sleeve 3 is respectively welded to the corresponding holes 201 in the interior and the outer plate 2, so that the outer sleeve 1, the outer plate 2, the inner sleeve 3, and the inner plate 4 form a whole. The inner sleeve 3 connects the outer plate 2 and the internal holes 201, and at the same time, it plays a good supporting role for the inner plate 4 and the outer plate 2, so that the overall mold has good anti-deformation ability, and can still maintain its original shape after long-term and multiple uses, thereby improving the positioning accuracy and durability of the mold.

[0026] In this embodiment, the ends of the outer sleeve 1 and the inner sleeve 3 are flush, and the bolts 5 pass through the inner sleeve 3 and are connected to the structural formwork 7, so that the outer sleeve 1 can be tightly attached to the inner side of the structural formwork 7, forming an independent space when pouring concrete, thereby reserving the opening.

[0027] In this embodiment, the outer plate 2 is flush with one end of the outer sleeve 1, and the inner plate 4 is located on the inner side of the opening at the other end of the outer sleeve 1, that is, the outer plate 2 is constructed at the opening of the outer sleeve 1, and is flush with the inner sleeve 3 and the end of the outer sleeve 1; the inner plate 4 and the inner sleeve 3 are constructed on the inner side of the opening at the other end of the outer sleeve 1, so that the inner sleeve 3 protrudes from the inner plate 4. The purpose of this design is to enable the outer sleeve 1 to better fit the inner template when the flatness of the structural template 7 is insufficient; when the outer plate 2 and the inner plate 4 are both arranged at the end of the outer sleeve 1, a gap is easily generated between the outer sleeve 1 and the structural template 7, resulting in concrete entering the gap during concrete pouring, and ultimately causing the reserved hole to fail to completely penetrate the structure. The present design can better avoid the occurrence of this phenomenon, ensure the quality of the reserved hole, and enhance the practicality of the mold.

[0028] Preferably, in order to ensure that the mold can be firmly fixed to the structural template 7 and prevent the mold from moving or shifting during the concrete pouring process, there are at least three groups of holes 201, that is, at least three bolts 5 pass through the holes 201 of the outer plate 2, the inner sleeve 3 and the holes 201 of the inner plate 4 to fix the mold to the structural template 7, the center of one group of holes 201 coincides with the axis of the outer sleeve 1, and at least two other groups of holes 201 provide auxiliary limiting from other directions.

[0029] In this embodiment, the holes 201 are dispersedly arranged along the radial direction of the outer plate 2 and the inner plate 4, which facilitates processing and manufacturing while ensuring the stability of the overall mold.

[0030] In this embodiment, the lifting device 6 is constructed in a U shape, and its two ends are fixed to the two sides of the outer sleeve 1 by pins, and are close to the outer plate 2. It can reach the outside of the outer plate 2 by flipping, so that the operator can move the entire mold outward through the lifting device 6 after the concrete pouring is completed to complete the reservation of the hole; at the same time, it is convenient to transfer the mold to the next construction site for the reservation construction of the hole of the same size.

[0031] In a specific embodiment, the mold proposed by the utility model is used to reserve a pipe hole passing through a floor slab. The head of the bolt 5 is located on one side of the outer plate 2 and faces upward. The screw rod passes through the inner sleeve 3 and is connected and fixed to the structural template 7 at the bottom.

[0032] In this embodiment, the reserved hole is accurately positioned by aligning the center of the bolt 5 with the pipe installation position of the structural template 7. In order to facilitate the bolt 5 to pass through the inner sleeve 3, the diameter of the inner sleeve 3 should be larger than the outer diameter of the bolt 5. At the same time, in order to avoid large errors, the diameter of the inner sleeve 3 should not be larger than the diameter of the bolt 5 by more than 2 mm. In order to enable the bolt 5 to be firmly fixed to the structural template 7, the length of the bolt 5 should exceed the length of the outer sleeve 1 plus the thickness of the structural template 7. According to the thickness setting of the conventional structural template 7, the length of the bolt 5 should exceed the length of the outer sleeve 1 by at least 20 mm.

[0033] like Figure 2 As shown, in a specific embodiment, the construction method of the above-mentioned reserved hole precise positioning mold includes the following steps:

[0034] According to the size of the reserved hole to be constructed, the outer sleeve 1, the inner sleeve 3, the inner plate 4 and the outer plate 2 are manufactured; specifically, the diameter of the outer sleeve 1 should be the same as the diameter of the reserved hole, and larger than the diameter of the pipe to be passed through the reserved hole; the length of the outer sleeve 1 should be the same as the depth of the reserved hole, that is, the same as the length of the pipe passing through the structure; the diameters of the inner plate 4 and the outer plate 2 are the same as the inner diameter of the outer sleeve 1;

[0035] Holes are opened in the inner plate 4 and the outer plate 2; specifically, the diameter of the hole is the same as the outer diameter of the inner sleeve 3; the center of one of the holes 201 is aligned with the axis of the outer sleeve 1;

[0036] The inner plate 4, the inner sleeve 3 and the outer plate 2 are welded. Specifically, the outer plate 2 is welded to one end of the inner sleeve 3. When welding, ensure that the hole 201 of the outer plate 2 is aligned with the through hole of the inner sleeve 3. The other end of the inner sleeve 3 passes through the corresponding hole 201 of the inner plate 4 and is welded to the inner plate 4, and the end thereof protrudes from the inner plate 4. Subsequently, the combination of the inner plate 4, the inner sleeve 3 and the outer plate 2 is welded to the outer sleeve 1. Specifically, the outer plate 2 is welded to the opening at one end of the outer sleeve 1, and the inner plate 4 is welded to the inner side of the opening at the other end of the outer sleeve 1.

[0037] Make a lifting device 6 and install it on the outer sleeve 1;

[0038] Install structural formwork 7;

[0039] According to the preset pipeline installation position, mark the center of the pipeline on the structural template 7;

[0040] Temporarily fix the combination of the outer sleeve 1, the inner sleeve 3, the inner plate 4 and the outer plate 2 to the template so that the center of the outer sleeve 1 is aligned with the center mark on the template; specifically, the alignment operation can be performed by the position of the inner sleeve 3, so that the inner sleeve 3 that coincides with the axis of the outer sleeve 1 is aligned with the center mark on the structural template 7;

[0041] First, install a bolt 5, pass through the inner sleeve 3 coinciding with the axis of the outer sleeve 1, and fix it to the center mark of the structural template 7; then install other bolts 5 to fix the entire device to the structural template 7;

[0042] pouring concrete;

[0043] After the concrete reaches the required strength, the reserved hole precise positioning mold is taken out through the pulling device 6.

[0044] The utility model adopts outer sleeve and inner sleeve made of steel pipe to reserve the hole, the reserved position is accurate and the molding quality is good; at the same time, it is easy to install and disassemble, which is beneficial to saving labor and construction period; each component is made of common materials, is easy to manufacture, has low processing cost, can be repeatedly used, and further reduces the cost.

[0045] The above is a detailed description of the embodiments of the utility model, but the contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A reserved hole precise positioning mold, characterized by: It includes an outer sleeve, an inner sleeve, an outer plate, an inner plate, bolts and a lifting device; The outer plate and the inner plate are arranged relative to the outer sleeve and are provided with a plurality of groups of relative holes, wherein the center of one group of holes coincides with the axis of the outer sleeve; each group of holes is connected through the inner sleeve to form a through hole; the bolt passes through the inner sleeve; and the pulling device is movably arranged on the outside of the outer sleeve.

2. The reserved hole precise positioning mold according to claim 1, characterized in that: The ends of the outer sleeve and the inner sleeve are flush.

3. The reserved hole precise positioning mold according to claim 2, characterized in that: The outer plate is flush with one end of the outer sleeve, and the inner plate is located at the inner side of the opening of the other end of the outer sleeve.

4. The reserved hole precise positioning mold according to claim 1 or 3, characterized in that: The holes are at least three groups.

5. The reserved hole precise positioning mold according to claim 4, characterized in that: The holes are dispersedly arranged along the radial direction of the outer plate and the inner plate.

6. The reserved hole precise positioning mold according to claim 5, characterized in that: The diameter of the inner sleeve is no more than 2 mm larger than the diameter of the bolt, and the length of the bolt is at least 20 mm longer than the length of the outer sleeve.

7. The reserved hole precise positioning mold according to claim 6, characterized in that: The outer sleeve and the inner sleeve are both made of round steel pipes.

8. The reserved hole precise positioning mold according to claim 1, characterized in that: The lifting device is U-shaped, and its two ends are fixed to the two sides of the outer sleeve through pins and are close to the outer plate.

9. The reserved hole precise positioning mold according to claim 1, characterized in that: The head of the bolt is located outside the outer plate.

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