Prefabricated hollow slab core mold convenient to disassemble

Abstract

The utility model relates to the technical field of hollow slab construction, in particular to a prefabricated hollow slab core mold convenient to disassemble. The device comprises a supporting piece, the supporting piece comprises a first supporting plate with the ends hinged to each other, a second supporting plate with the ends hinged to each other and a supporting mechanism used for supporting the first supporting plate and the second supporting plate, and the first supporting plate and the second supporting plate define a hollow structure; the end parts of the first supporting plate and the second supporting plate are matched with each other; according to the device, the effect of fixing the first supporting plate and the second supporting plate is achieved through the fixing assemblies, the structural stability of the device is improved, and during dismantling, the effect of rapid formwork dismantling is achieved through mutual pulling between the supporting mechanisms; in the whole form removal process, a large amount of labor is not needed, the construction cost is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hollow slab construction, in particular to a prefabricated hollow slab core mould which is easy to disassemble. Background Art

[0002] Precast hollow slabs are cast by concrete formwork and have a hollow cross-section. In the construction of hollow concrete structures, steel formwork is mainly used. The formwork made of steel plates has high rigidity and strength and is not easily deformed during concrete pouring. The core formwork of precast hollow slabs in the existing technology all has a supporting structure inside the formwork. During the pouring of the precast hollow slab concrete, the core formwork is supported by the supporting structure. However, after the precast hollow slab is poured, when the core formwork is disassembled, it is extremely difficult because the core formwork is surrounded by the hollow slab concrete and supported by the supporting structure inside the core formwork. If it is forcibly disassembled, it is easy to damage the finished hollow slab and the core formwork, causing unnecessary losses.

[0003] Chinese patent CN202321675784.9 discloses "A Bridge Hollow Slab Core Formwork", publication number CN220261356U. The device includes a first support portion, which is surrounded by a plurality of strip-shaped first support members, and every two first support members are interconnected to form a first support portion with a hollow structure in the middle; a second support portion is evenly arranged in the hollow structure, for supporting the first support portion, and the outer surface of the second support portion abuts against the inner surface of the support member, wherein the second support portion is composed of a plurality of rod-shaped second support members connected end to end. However, the device has some defects: when dismantling, the first support member and the second support member of the device cannot be closed together, and the first support member and the second support member are still attached to the hollow slab. When the first support member and the second support member are pulled out, there is a large resistance to pulling out. Utility Model Content

[0004] In order to solve the problems of the above-mentioned prior art, the utility model provides a prefabricated hollow slab core mold that is easy to disassemble, reduces the difficulty of disassembling the prefabricated hollow slab core mold, reduces the time and labor invested in disassembling the hollow slab core mold, and improves construction efficiency.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solution: a prefabricated hollow plate core mold that is easy to disassemble, including a support member, the support member including a first support plate whose ends are hinged to each other, a second support plate whose ends are hinged to each other, and a support mechanism for supporting the first support plate and the second support plate, the first support plate and the second support plate together form an internal hollow structure, and the ends of the first support plate and the second support plate fit together.

[0006] With the above structural design, during the pouring of precast hollow slab concrete, the first support plate and the second support plate are supported by the support mechanism. After the pouring of the precast hollow slab is completed, when the core mold is disassembled, the support mechanism does not support the first support plate and the second support plate. The first support plate rotates and contracts around the hinge axis, and the second support plate rotates and contracts around the hinge axis, so that the first support plate and the second support plate can be quickly pulled out.

[0007] Preferably, the support mechanism includes a first hinged rod hinged on the inner side wall of the first support plate, a first pull plate hinged to the first hinged rod, a second hinged rod hinged on the inner side wall of the second support plate, a second pull plate hinged to the second hinged rod, and a positioning assembly for fixing the first support plate and the second support plate, and pull holes are provided on the first pull plate and the second pull plate.

[0008] With the above structural design, during the pouring of concrete of the precast hollow slab, the positioning assembly fixes the first support plate and the second support plate, and the first pull plate and the second pull plate cannot be pulled. After the pouring of the precast hollow slab is completed, the positioning assembly is removed, and the staff pulls the first pull plate and the second pull plate, and the first hinge rod and the second hinge rod shrink, from a vertical state to an inclined state, and the first support plate hinged to the first hinge rod approaches each other, and the second support plate hinged to the second hinge rod approaches each other, and the first support plate and the second support plate no longer fit the hollow slab, so that the first support plate and the second support plate can be quickly pulled out.

[0009] Preferably, the positioning assembly includes a fixing plate arranged on the first support plate and the second support plate, a plurality of positioning rods are passed through the fixing plate, and positioning holes matching the positioning rods are provided on both the first support plate and the second support plate.

[0010] With the above structural design, the first support plate and the second support plate are fixed by the fixing plate, thereby increasing the stability of the supporting structure.

[0011] Preferably, the positioning assembly includes a first positioning pin passed through the first hinged rod and a second positioning pin passed through the second hinged rod, a first positioning pin hole matching the first positioning pin is formed on the first pull plate, and a second positioning pin hole matching the second positioning pin is formed on the second pull plate.

[0012] With the above structural design, the first hinged rod and the second hinged rod are fixed and retracted by installing and removing the first positioning pin on the first pull plate and the first hinged rod, and installing and removing the second positioning pin on the second pull plate and the second hinged rod. The installation is quick, simple and cost-effective.

[0013] Preferably, a plurality of the first hinged rods are provided and are arranged at equal intervals on both sides of the first pull plate; a plurality of the second hinged rods are provided and are arranged at equal intervals on both sides of the second pull plate.

[0014] The above structural design uses a plurality of first hinged rods and second hinged rods to increase the stability of the device structure.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The fixing assembly is used to fix the first support plate and the second support plate, thereby increasing the structural stability of the device. During dismantling, the support mechanisms can be pulled together to achieve a quick demolding effect. During the entire demolding process, a large amount of manpower is not required, thereby reducing construction costs and improving construction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0018] Figure 2 This is a front view structural diagram of the first embodiment of the present invention;

[0019] Figure 3 This is a schematic diagram of the structure of the first embodiment of the present invention from a top view;

[0020] Figure 4 This is a front view structural diagram of the second embodiment of the present invention;

[0021] Figure 5 This is a schematic structural diagram of the second embodiment of the present utility model; DETAILED DESCRIPTION

[0022] Example 1

[0023] See also Figure 1 、 Figure 2 、 Figure 3 The utility model provides a technical solution: a prefabricated hollow plate core mold that is easy to disassemble, including a support member, the support member including a first support plate 1 whose ends are hinged to each other, a second support plate 2 whose ends are hinged to each other, and a support mechanism for supporting the first support plate 1 and the second support plate 2. The first support plate 1 is provided with two and is symmetrically arranged up and down. The ends of the first support plate 1 are hinged to each other through a hinge shaft 81, the second support plate 2 is provided with two and is symmetrically arranged up and down, and the ends of the second support plate 2 are hinged to each other through a hinge shaft 82. The first support plate 1 and the second support plate 2 are enclosed to form an internal hollow structure, and the ends of the first support plate 1 and the second support plate 2 fit together.

[0024] See also Figure 1 、 Figure 2 、 Figure 3 The support mechanism includes a first hinged rod 31 hinged on the inner wall of the first support plate 1, a first pull plate 3 hinged to the first hinged rod 31, a second hinged rod 41 hinged on the inner wall of the second support plate 2, a second pull plate 4 hinged to the second hinged rod 41, and a positioning assembly for fixing the first support plate 1 and the second support plate 2. Pull holes 5 are provided on the first pull plate 3 and the second pull plate 4.

[0025] See also Figure 1 、 Figure 2 、 Figure 3 , multiple first hinged rods 31 are provided and are arranged at equal intervals on both sides of the first pull plate 3; three first hinged rods 31 are provided on the left and right sides of the first pull plate 3, multiple second hinged rods 41 are provided and are arranged at equal intervals on both sides of the second pull plate 4, and three second hinged rods 41 are provided on the left and right sides of the second pull plate 4.

[0026] See also Figure 1 、 Figure 2 、 Figure 3 The positioning assembly includes a fixing plate 6 arranged on the first support plate 1 and the second support plate 2, and a plurality of positioning rods 61 are passed through the fixing plate 6. The first support plate 1 and the second support plate 2 are both provided with positioning holes 62 matching the positioning rods 61. The fixing plate 6 is provided with two front and rear ends respectively installed on the first support plate 1 and the second support plate 2. The positioning holes 62 are covered with internal threads, and the positioning rods 61 are covered with external threads. The positioning rods 61 pass through the fixing plate 6 and are installed in the positioning holes 62 by threads.

[0027] When the device is in use, before pouring the concrete of the prefabricated hollow slab, the staff first aligns the ends of the first support plate 1 and the second support plate 2 with each other, and then adjusts the positions of the first pull plate 3 and the second pull plate 4 so that the first hinge rod 31 is perpendicular to the first pull plate 3, and supports the first support plate 1 on both sides of the first pull plate 3, so that the second hinge rod 41 is perpendicular to the second pull plate 4, and supports the second support plates 2 on both sides of the second pull plate 4; next, the staff aligns the positioning rod 61 on the fixed plate 6 with the positioning holes 62 on the first support plate 1 and the second support plate 2, rotates the positioning rod 61 and installs the positioning rod 61 into the positioning hole 62, and the assembly of the device is completed;

[0028] After the prefabricated hollow slab is cast, the fixed plate 6 is removed, and the staff connects the winch through the pulling hole 5. After the winch is started, the first pulling plate 3 and the second pulling plate 4 are pulled, and the first hinged rod 31 and the second hinged rod 41 are contracted, and the vertical state is changed to an inclined state. The first support plate 1 hinged to the first hinged rod 31 approaches each other, and the second support plate 2 hinged to the second hinged rod 41 approaches each other. The first support plate 1 and the second support plate 2 no longer fit the hollow slab, so that the first support plate 1 and the second support plate 2 can be quickly pulled out to complete the dismantling of the device.

[0029] Example 2

[0030] like Figure 4 、 Figure 5 As shown, Example 2 is modified from Example 1. The positioning assembly includes a first positioning pin 71 inserted through the first hinge rod 31 and a second positioning pin 72 inserted through the second hinge rod 41. The first pull plate 3 defines a first positioning pin hole that matches the first positioning pin 71, and the second pull plate 4 defines a second positioning pin hole that matches the second positioning pin 72. Both the first pull plate 3 and the second pull plate 4 define connecting holes, through which connecting bolts 9 are inserted. The connecting bolts 9 can connect the first pull plate 3 and the second pull plate 4, thereby increasing the stability of the assembled device.

[0031] When the device is in use, before pouring the concrete of the prefabricated hollow slab, the staff first aligns the ends of the first support plate 1 and the second support plate 2 with each other, and then adjusts the positions of the first pull plate 3 and the second pull plate 4 so that the first hinge rod 31 is perpendicular to the first pull plate 3, and supports the first support plate 1 on both sides of the first pull plate 3, so that the second hinge rod 41 is perpendicular to the second pull plate 4, and supports the second support plates 2 on both sides of the second pull plate 4; next, the staff uses the first locating pin 71 to pass through the first hinge rod 31 and insert it into the first locating pin hole on the first pull plate 3, and the second locating pin 72 to pass through the second hinge rod 41 and insert it into the second locating pin hole on the second pull plate 4, and the staff then uses the connecting bolt 9 to pass through the connecting holes on the first pull plate 3 and the second pull plate 4 to connect the first pull plate 3 and the second pull plate 4, and the assembly of the device is completed;

[0032] After the prefabricated hollow slab is cast, the connecting bolts 9, the first positioning pin 71 and the second positioning pin 72 are removed, and the staff connects the pulling hole 5 through the winch. After the winch is started, the first pulling plate 3 and the second pulling plate 4 are pulled, and the first hinged rod 31 and the second hinged rod 41 shrink and change from a vertical state to an inclined state. The first support plate 1 hinged to the first hinged rod 31 approaches each other, and the second support plate 2 hinged to the second hinged rod 41 approaches each other. The first support plate 1 and the second support plate 2 no longer fit the hollow slab, so that the first support plate 1 and the second support plate 2 can be quickly pulled out from the hollow slab to complete the dismantling of the device.

[0033] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in this specification for the understanding and reading of those familiar with this technology. They are not used to limit the conditions for the implementation of this utility model and therefore have no substantial technical significance. Any modification of the structure, change in the proportional relationship, or adjustment of the size should still fall within the scope of the technical content disclosed in this utility model without affecting the efficacy and purpose of the utility model. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and "one" quoted in this specification are only for the convenience of description and are not used to limit the scope of the implementation of this utility model. Changes or adjustments in their relative relationships should also be considered as the scope of the implementation of this utility model without substantially changing the technical content.

[0034] The present invention has been described above with reference to preferred embodiments. However, the scope of protection of the present invention is not limited thereto. All technical solutions falling within the scope of the claims are within the scope of protection of the present invention. Various improvements may be made to the present invention, and components may be replaced with equivalents without departing from the scope of the present invention. In particular, the various technical features described in the various embodiments may be combined in any manner, as long as there are no structural conflicts.

Claims

1. A prefabricated hollow slab core mold that is easy to disassemble, comprising a support member, characterized in that: The support member comprises a first support plate (1) whose ends are hinged to each other, a second support plate (2) whose ends are hinged to each other, and a support mechanism for supporting the first support plate (1) and the second support plate (2); the first support plate (1) and the second support plate (2) are combined to form an internal hollow structure; the ends of the first support plate (1) and the second support plate (2) are fitted to each other.

2. The prefabricated hollow slab core mold that is easy to disassemble according to claim 1 is characterized in that: The support mechanism comprises a first hinged rod (31) hinged on the inner side wall of the first support plate (1), a first pull plate (3) hinged to the first hinged rod (31), a second hinged rod (41) hinged to the inner side wall of the second support plate (2), a second pull plate (4) hinged to the second hinged rod (41), and a positioning assembly for fixing the first support plate (1) and the second support plate (2); and pull holes (5) are provided on the first pull plate (3) and the second pull plate (4).

3. The easily disassembled prefabricated hollow slab core mold according to claim 2, characterized in that: The positioning assembly comprises a fixing plate (6) arranged on a first supporting plate (1) and a second supporting plate (2), a plurality of positioning rods (61) are passed through the fixing plate (6), and positioning holes (62) matching the positioning rods (61) are provided on both the first supporting plate (1) and the second supporting plate (2).

4. The easily disassembled prefabricated hollow slab core mold according to claim 2, characterized in that: The positioning assembly comprises a first positioning pin (71) passed through the first hinge rod (31), and a second positioning pin (72) passed through the second hinge rod (41); a first positioning pin hole matching the first positioning pin (71) is provided on the first pull plate (3); and a second positioning pin hole matching the second positioning pin (72) is provided on the second pull plate (4).

5. The easily disassembled prefabricated hollow slab core mold according to claim 2, characterized in that: A plurality of the first hinged rods (31) are arranged at equal intervals on both sides of the first pull plate (3); a plurality of the second hinged rods (41) are arranged at equal intervals on both sides of the second pull plate (4).

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