Concrete prefabricated part hole forming device

Abstract

The utility model discloses a precast concrete component hole forming device, which comprises a template, a screw rod and a fastening external member, the template is provided with a first internal thread hole opposite to a hole position, the peripheral wall of the screw rod is provided with a first external thread, the lower end of the screw rod is integrally provided with an insertion section with a smooth outer wall, the fastening external member is provided with a positioning hole, and the positioning hole is provided with a second external thread. The positioning hole is provided with a second internal thread hole matched with the external thread; the fastening sleeve piece is arranged above the template and sleeves the peripheral wall of the screw rod; and the screw rod is screwed into the first inner threaded hole. The screw rod is disassembled after the concrete is completely hardened, so that the sizes, the shapes, the appearances and other qualities of the concrete holes are effectively guaranteed, the method is particularly significant to the peripheral concrete quality problems caused by slurry leakage, deformation, cracks and the like of the concrete holes, and the quality of prefabricated parts is guaranteed; the tool has the advantages of being good in repeatability, convenient to assemble and disassemble, capable of preventing slurry leakage, accurate in positioning and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of concrete prefabricated component, especially to a concrete prefabricated component hole forming device. BACKGROUND

[0002] The concrete prefabricated component is a building component made in the factory in advance with concrete as the basic material, including beams, plates, columns and building decoration accessories.

[0003] In the production of prefabricated components, the hole position needs to be made in the component in advance (the hole position is generally used for cooperation or installation of metal components between prefabricated components), and the current general method is to fix a conical screw on a mold, and then remove it before initial setting after pouring concrete. Although this method is simple, it has problems such as control of concrete setting time, deformation, cracks and burrs of hole forming effect.

[0004] Especially when it is removed too early, it may cause the collapse of the concrete around the hole, resulting in hole blockage, deformation, non-straightness, and even cracking of the surrounding concrete, etc. In order to change the above problems, a method of removing the hole after the concrete hardens is designed and manufactured. CONTENT OF THE UTILITY MODEL

[0005] The main purpose of the utility model is to provide a concrete prefabricated component hole forming device, which aims to improve the hole forming device, so that the hole position can be taken out after the concrete hardens, and the screw and the concrete can be conveniently taken out while avoiding cracking of the concrete, and the structure is simple, stable and convenient to install.

[0006] To achieve the above purpose, the utility model provides a concrete prefabricated component hole forming device, which comprises:

[0007] A mold plate is provided with a first internal threaded hole opposite to the hole position;

[0008] A screw is provided with a first external thread on the outer peripheral wall, and the lower end of the screw is integrally formed with a smooth outer wall plug-in section;

[0009] A fastening kit is provided with a positioning hole, and the positioning hole is provided with a second internal threaded hole matched with the external thread, and the outer peripheral wall of the fastening kit is a smooth forming part;

[0010] The fastening kit is arranged above the mold plate and is sleeved on the outer peripheral wall of the screw;

[0011] The screw is screwed into the first internal threaded hole.

[0012] In actual design, the first outer thread and the first inner thread of the screw are matched, when locking is needed, locking is realized by abutting the fastening assembly with the upper wall of the formwork, when unlocking is needed, the fastening assembly is first screwed to unlock the concrete in the formwork, at this time, the screw and the fastening assembly are displaced, and then the hole position and the forming part are separated, finally the screw is taken out from the hole position, that is, the fastening assembly and the hole position are preliminarily separated, the screw is applied with an insertion force, and then the hole position splitting caused by swinging of the fastening assembly and the hole position during separation is reduced;

[0013] The whole hole device is removed after the concrete is completely hardened, thereby effectively ensuring the size, shape and appearance quality of the concrete hole, and particularly having important significance for the quality problems of the surrounding concrete caused by slurry leakage, deformation and cracks of the concrete hole, thereby ensuring the quality of the prefabricated component, and the tooling has the advantages of good repeatability, convenient assembly and disassembly, slurry leakage prevention, accurate positioning and the like.

[0014] The design has simple structure but obvious and stable use effect. DETAILED DESCRIPTION

[0015] Fig. 1 It is a schematic view of the first embodiment of the utility model;

[0016] Fig. 2 It is a schematic view of the first embodiment of the utility model;

[0017] Fig. 3 It is a schematic view of the first embodiment of the utility model;

[0018] In the drawing,

[0019] 1 is a formwork, 1a is a first inner threaded hole, 1b is a convex,

[0020] 2 is a screw, 2a is a first outer thread, 21 is an insertion section,

[0021] 3 is a fastening assembly, 3a is a second inner threaded hole, 3b is a rotating knob, 3c is a forming section,

[0022] 100 is concrete. DETAILED DESCRIPTION

[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0024] It should be noted that if the embodiments of the utility model have the directional indication (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial), the directional indication is only used to explain the relative position relationship, movement condition and the like between components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directional indication also changes accordingly.

[0025] In addition, if the embodiments of the utility model have the description of "first" or "second", etc., the description of "first" or "second" is only for the purpose of description, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0026] As shown in Figs. 1-3 A concrete prefabricated component hole forming device, comprising:

[0027] A template, the template is provided with a first internal threaded hole opposite to the hole position;

[0028] A screw rod, the outer peripheral wall of the screw rod is provided with a first external thread, and the lower end of the screw rod is integrally formed with a smooth outer wall plug-in section;

[0029] A fastening sleeve, the fastening sleeve is provided with a positioning hole, the positioning hole is provided with a second internal threaded hole matched with the external thread, and the outer peripheral wall of the fastening sleeve is a smooth forming part;

[0030] The fastening sleeve is arranged above the template and is sleeved on the outer peripheral wall of the screw rod;

[0031] The screw rod is screwed into the first internal threaded hole.

[0032] The first external thread of the screw rod is matched with the first internal thread, when it is needed to be screwed to the locked state, the fastening sleeve is abutted against the upper wall of the template to realize the locking, when it is needed to be unlocked, the fastening sleeve is screwed first, so that the fastening sleeve is unlocked with the concrete in the template, at this time, the screw rod and the fastening sleeve are displaced, and then the hole position and the forming part are separated, finally, the screw rod is taken out from the hole position, that is, the fastening sleeve and the hole position are preliminarily separated, the screw rod is applied with the plug-out force, and then the splitting of the hole position caused by the swing of the fastening sleeve and the hole position when they are separated is reduced;

[0033] That is, the former is a screw directly formed hole position (now formed by a fastening kit, so the fastening kit has displacement space), the screw is removed after the concrete is completely hardened, effectively guaranteeing the size, shape, appearance and other quality of the concrete hole, especially the concrete hole leakage, deformation, cracks and other peripheral concrete quality problems have important significance, guaranteeing the quality of the prefabricated component, and the tool has the advantages of good repeatability, easy assembly and disassembly, leakage prevention, accurate positioning and the like. The hole is not deformed, loose and causes the collapse and cracking of the peripheral concrete of the hole, thereby guaranteeing the quality of the component, and has good practical value.

[0034] The design is simple in structure, but the use effect is relatively obvious and stable.

[0035] As shown in Fig. 1 The first inner threaded hole 1a and the first outer thread 2a are matched, and the fastening kit 3 is arranged at the upper position of the formwork 1.

[0036] Specifically, the insertion section 21 is sprayed with a separating agent, thereby facilitating the demolding between the concrete and the insertion section 21.

[0037] In the embodiment of the utility model, the upper end of the screw is hexagonal, a rotating tab is arranged at the upper end of the fastening kit, and the rotating tab is used to drive the relative movement of the fastening kit and the screw, so that the rotating tab is convenient to rotate a small stroke.

[0038] The overall height of the fastening kit is less than 50 mm.

[0039] Specifically, the screw 2 is made of stainless steel, steel or a mixture of plastic and metal.

[0040] In the embodiment of the utility model, the upper end of the screw 2 and the outer wall of the fastening kit 3 are hexagonal. Thus, screwing or installation is facilitated.

[0041] Specifically, the upper wall of the formwork 1 located at the first inner threaded hole 1a is provided with a convex bump. The convex bump facilitates the disassembly of the fastening kit 3 and avoids the inconvenience of screwing caused by the flat structure, such as the adhesion between the fastening kit 3 and the formwork 1 caused by the influence of the concrete, which affects disassembly.

[0042] The fastening kit is in a strip shape, the outer diameter of which is gradually reduced from top to bottom, and the outer peripheral wall of the fastening kit is a smooth wall.

[0043] The above is only the preferred embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation made by using the utility model specification and the attached drawings, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A device for forming holes in precast concrete components, characterized in that, The utility model relates to a template fastening device, which comprises: a template provided with a first internally threaded hole opposite a hole site; a screw rod provided with a first externally threaded wall on the outer circumferential wall, the lower end of the screw rod being integrally formed with a smooth externally threaded insertion section; a fastening sleeve provided with a positioning hole, the positioning hole being provided with a second internally threaded hole matched with the externally threaded wall, the outer circumferential wall of the fastening sleeve being a smooth formed part; the fastening sleeve is arranged above the template and is sleeved on the outer circumferential wall of the screw rod; the screw rod is screwed into the first internally threaded hole.

2. The concrete precast member hole forming apparatus of claim 1, wherein: The first internally threaded hole is matched with the first externally threaded wall, and the fastening sleeve is arranged above the template.

3. The apparatus for forming a hole of a concrete precast member according to claim 1, wherein: The upper end of the screw rod is hexagonal, a rotating knob is arranged on the upper end of the fastening sleeve, and the rotating knob is used to drive the fastening sleeve to move relative to the screw rod.

4. The apparatus for forming a hole of a concrete precast member according to claim 1, wherein: The overall height of the fastening sleeve is less than 50 mm.

5. The apparatus for forming a hole of a concrete precast member according to claim 1, wherein: The upper wall of the template at the first internally threaded hole is provided with a convex bump.

6. The apparatus for forming a hole of a concrete precast member according to claim 1, wherein: The fastening sleeve is long strip-shaped, and the outer diameter thereof is gradually reduced from top to bottom.

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