Air bag mold for manufacturing square pile

Abstract

The utility model belongs to the technical field of prefabricated parts for buildings, and relates to an air bag mold for manufacturing a square pile. Comprising an air bag, a shaping structure is fixed on the outer wall of the air bag, the shaping structure comprises a metal sheet fixedly connected with the air bag, and when the air bag is inflated, the metal sheet is matched with the outer wall of the air bag in shape and closely matched with the outer wall of the air bag. According to the utility model, the pile making time can be obviously shortened, the air bag mold is simple, convenient and quick to operate, complicated mounting and dismounting procedures are not needed, the pile making period is greatly shortened, and the construction efficiency is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to prefabricated component technical field for building relates to a kind of air bag mould for making square pile. BACKGROUND

[0002] Traditional square pile making usually uses steel mould as forming tool, which is assembled by pre-processed steel plate into mould, then pours concrete, and removes mould after solidification. The method has the advantages of high precision and good strength, but the disadvantages are heavy weight, inconvenient movement, complex disassembly and assembly, and needs cleaning and maintenance after each use, which increases labor intensity and cost.

[0003] Another method is air bag mould method: the method uses inflatable rubber bag as mould, which is unfolded and fixed before pouring, and taken out after deflation after pouring. The advantage of air bag mould is light and flexible, easy to carry and store, but the problem is poor durability, easy to damage, especially aging and deterioration in high temperature environment.

[0004] The above two pile making methods have advantages, but also have obvious shortcomings. Steel mould method has the problems of complex operation and high labor intensity, and is not suitable for large-scale production and rapid construction. Although air bag mould method solves part of the problems, it still faces the problems of poor durability and easy damage, which limits its wide application. UTILITY MODEL CONTENT

[0005] The utility model aims at the above problems, and provides an air bag mould for making square pile and a method for making square pile.

[0006] To achieve the above object, the utility model adopts the following technical scheme:

[0007] An air bag mould for making square pile comprises an air bag, and a shaping structure is fixed to the outer wall of the air bag. The shaping structure comprises metal sheets fixedly connected with the air bag. When the air bag is inflated, the metal sheets are matched with the shape of the outer wall of the air bag and tightly matched with the outer wall of the air bag.

[0008] In the air bag mould for making square pile, the metal sheets are in several pieces and have L-shaped cross section, or the metal sheets are in several pieces and have U-shaped cross section, or the metal sheets are in several pieces and have one-character-shaped cross section, or the metal sheets are in several pieces and have circular arc-shaped cross section.

[0009] In the air bag mould for making square pile, the metal sheets comprise one or several of L-shaped cross section, U-shaped cross section, one-character-shaped cross section or circular arc-shaped cross section.

[0010] In the air bag mould for making square pile, the metal sheets and the air bag are fixedly connected through filling blocks.

[0011] In the air bag mold for making square piles, the inner wall shape of the filling block is matched with the outer wall shape of the air bag when the air bag is inflated, and the outer wall shape of the filling block is matched with the inner wall shape of the metal sheet.

[0012] In the air bag mold for making square piles, the shaping structure further comprises a shaping sleeve, and the air bag and the metal sheet are located in the shaping sleeve.

[0013] In the air bag mold for making square piles, at least one air nozzle capable of communicating with the outside is arranged on the air bag, and the two ends of the shaping sleeve are in a closed shape, and the air nozzle extends out of one end of the shaping sleeve.

[0014] In the air bag mold for making square piles, a plurality of air bags are arranged, a supporting piece is arranged in the shaping sleeve, and the outer walls of the plurality of air bags are in close contact with the outer walls of the shaping sleeve and the supporting piece when the air bags are inflated.

[0015] In the air bag mold for making square piles, the outer wall of the metal sheet has a polyurethane coating, and at least one air nozzle capable of communicating with the outside is arranged on the air bag.

[0016] Compared with the prior art, the air bag mold has the following advantages:

[0017] 1. The operation of the air bag mold is simple and fast, without complex installation and disassembly processes, so that the pile manufacturing period is greatly reduced, and the construction efficiency is improved.

[0018] 2. The air bag mold is light and portable, which reduces the labor input and the construction cost.

[0019] 3. The air bag mold and the metal sheet are combined, so that the size and shape of the square pile are more accurate, the surface is smooth and beautiful, and the market competitiveness of the product is enhanced.

[0020] 4. The addition of the metal sheet effectively protects the air bag film, reduces the wear and aging phenomenon, prolongs the service life of the mold, and reduces the maintenance frequency and cost.

[0021] Other advantages, objects and features of the air bag mold will be embodied in part through the following description, and will be understood by those skilled in the art through research and practice of the air bag mold. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a structural schematic view of the application,

[0023] Figure 2 is Figure 1Another direction of the schematic view.

[0024] Figure 3 Another structure schematic view of the present application.

[0025] Figure 4 Another structure schematic view of the present application. Figure 3 Another direction of the schematic view.

[0026] Figure 5 Another structure schematic view of the present application.

[0027] Figure 6 Another structure schematic view of the present application. Figure 5 Another direction of the schematic view.

[0028] Figure 7 Another structure schematic view of the present application.

[0029] Figure 8 Another structure schematic view of the present application. Figure 7 Another direction of the schematic view.

[0030] Figure 9 Another structure schematic view of the present application.

[0031] In the figure: air bag 1, metal sheet 2, filling block 3, shaping cover 5, support 6, steel pipe 6a, partition 6b. DETAILED DESCRIPTION

[0032] The present application is further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] Embodiment 1

[0034] As shown in the figure, an air bag mold for making square pile, comprising air bag 1, the air bag 1 outer wall is fixed with shaping structure, the shaping structure comprises metal sheet 2 fixedly connected with air bag 1, air bag 1 is made of high-strength rubber, metal sheet 2 preferably adopts stainless steel. When air bag is inflated, the shape of the metal sheet 2 and the outer wall of the air bag 1 is matched and closely matched with the outer wall of the air bag 1. The thickness of the metal sheet 2 is between 0.4-1mm, the width is adjusted according to the actual shape, such as 5cm, 10cm, 15cm and so on, the embodiment is not limited, the length of the metal sheet 2 is matched with the length of the air bag 1. Figures 1-2 The outer wall of the metal sheet 2 has a layer of polyurethane coating, which improves the wear resistance and waterproof performance.

[0035] In the embodiment, when the air bag 1 is inflated, the cross section of the air bag 1 is rectangular, circular, oval or polygonal. Of course, the cross section of the air bag 1 can also be other irregular shapes, preferably, in order to match the square pile, when the air bag 1 is inflated, the cross section of the air bag 1 is rectangular.

[0036] The outer wall of the metal sheet 2 has a layer of polyurethane coating, which improves the wear resistance and waterproof performance.

[0037] The metal sheet 2 has several pieces and is in the shape of an L in cross section, or the metal sheet 2 has several pieces and is in the shape of a U in cross section, or the metal sheet 2 has several pieces and is in the shape of a one-stroke in cross section, or the metal sheet 2 has several pieces and is in the shape of a circular arc in cross section.

[0038] Preferably, as shown in Figure 9 The metal sheet 2 includes one or more of the shapes of L, U, one-stroke or circular arc in cross section. That is, the metal sheet 2 can be a combination of different shapes as long as it can be combined with the outer wall of the air bag 1.

[0039] It should be noted that a gap is required between adjacent metal sheets 2, which is to prevent the metal sheets 2 from colliding or overlapping when the air bag 1 is inflated. In addition, the air bag 1 is not limited to one, but can be a combination of multiple air bags 1. Alternatively, one air bag module can be considered as a basic unit, and several air bag modules can be combined with each other, or two or more air bags 1 can be combined in one air bag module.

[0040] Preferably, as shown in Figure 3 , Figure 4 and Figure 9 The metal sheet 2 is fixedly connected to the air bag 1 by the filler block 3.

[0041] As described above, the air bag 1 is made of high-strength rubber, and the metal sheet 2 is made of stainless steel. Preferably, the air bag 1 is made of ethylene-propylene-diene rubber, the metal sheet 2 is made of 304 stainless steel, and the filler block 3 is made of polystyrene foam. The air bag 1, the filler block 3 and the metal sheet 2 are fixedly connected by an adhesive. The adhesive can be a two-component epoxy resin adhesive, which forms a tough adhesive layer after curing, ensuring that the metal sheet is tightly combined with the air bag film.

[0042] In order to make the filler block 3 tightly fit with the air bag 1 and the metal sheet 2, the inner wall shape of the filler block 3 is matched with the outer wall shape of the air bag 1 when it is inflated, and the outer wall shape of the filler block 3 is matched with the inner wall shape of the metal sheet 2.

[0043] The air bag 1 is provided with an inflation port and a deflation port for inflation and deflation. In this embodiment, the air bag 1 is provided with at least one air nozzle that can communicate with the outside. The air nozzle is connected to an inflation device such as a compressed air machine to inflate the air bag. When the air nozzle is disconnected from the compressed air machine or a three-way valve is connected between the air nozzle and the compressed air machine, the air bag can be inflated and deflated through the air nozzle.

[0044] As shown in Figures 3-9 The shaping structure further includes a shaping sleeve 5, and the air bag 1 and the metal sheet 2 are located in the shaping sleeve 5.

[0045] Specifically, the shaped outer sleeve 5 can be shaped according to the internal hollow shape of the pile to be made when inflated, and the cross section of the air bag 1 can be rectangular, circular, oval, polygonal, etc. as described above, and the cross section of the shaped outer sleeve 5 can also be rectangular, circular, oval, polygonal, etc. As shown in Figure 3 the cross section of the air bag 1 is circular, the metal sheet 2 is L-shaped, and the shaped outer sleeve 5 is rectangular.

[0046] The air bag 1 has a plurality of air bags, and the shaped outer sleeve 5 is provided with a support 6. When the air bag is inflated, the outer walls of the plurality of air bags 1 are in close contact with the outer walls of the shaped outer sleeve 5 and the support 6, respectively.

[0047] As shown in Figure 5 and Figure 6 the support 6 is a steel pipe, and the plurality of air bags 1 are arranged around the support 6. When the air bag 1 is inflated, the air bag 1 supports the support 6 and the shaped outer sleeve 5, respectively, and expands the shaped outer sleeve 5.

[0048] Alternatively, as shown in Figures 7-8 , considering the independence and stability of the air bags 1, the support 6 is a combination of a steel pipe 6a and a partition 6b, and the partitions 6b are evenly distributed around the steel pipe 6a. Each two adjacent air bags 1 are separated by a partition 6b.

[0049] The air bag 1 is provided with at least one gas nozzle capable of communicating with the outside, and the two ends of the shaped outer sleeve 5 are closed. The gas nozzle extends out of one end of the shaped outer sleeve 5.

[0050] Embodiment 2

[0051] The embodiment based on the air bag mold for making piles of embodiment 1 provides a method for making piles, comprising the following steps:

[0052] Step A, inflation stage: lay the air bag mold at the predetermined position, inflate the air bag 1, make the metal sheet 2 expand synchronously with the outer wall of the air bag 1, and then fix the air bag mold in the mold groove,

[0053] Step B, pouring stage: after the air bag is fully inflated, apply release agent to the outer wall of the metal sheet 2, and inject concrete slurry into the mold groove,

[0054] Step C, solidification stage: after stopping pouring, keep the pressure in the air bag 1, and let the concrete stand and solidify,

[0055] Step D, demolding stage: after confirming that the concrete is fully solidified and forms a primary precast pile, exhaust the gas in the air bag 1, and pull out the metal sheet 2 and the air bag 1 from the primary precast pile, to obtain a hollow square pile with an intermediate hollow structure.

[0056] The specific embodiments described herein are merely illustrative of the spirit of the present application. Those skilled in the art of the present application can make various modifications or supplements to the described specific embodiments or replace them with similar ways, but will not deviate from the spirit of the present application.

Claims

1. An airbag mould for making a pile, comprising an airbag (1), characterised in that, The air bag (1) is fixed with a shaping structure, the shaping structure comprises a metal sheet (2) fixedly connected with the air bag (1), when the air bag is inflated, the metal sheet (2) is matched with the shape of the outer wall of the air bag (1) and tightly matched with the outer wall of the air bag (1).

2. The air bag mold for manufacturing a batter post according to claim 1, wherein The metal sheet (2) has several pieces and the cross section is L-shaped, or the metal sheet (2) has several pieces and the cross section is U-shaped, or the metal sheet (2) has several pieces and the cross section is one-character-shaped, or the metal sheet (2) has several pieces and the cross section is circular arc-shaped.

3. The airbag mold for manufacturing a batter post according to claim 1, wherein The metal sheet (2) comprises one or more of L-shaped, U-shaped, one-character-shaped or circular arc-shaped cross sections.

4. The air bag mold for manufacturing a batter post according to claim 1, wherein The metal sheet (2) and the air bag (1) are fixedly connected through the filling block (3).

5. The airbag mold for manufacturing a batter post according to claim 4, wherein The inner wall shape of the filling block (3) is matched with the outer wall shape of the air bag (1) when the air bag is inflated, and the outer wall shape of the filling block (3) is matched with the inner wall shape of the metal sheet (2).

6. The air bag mold for manufacturing a batter post according to claim 1, wherein The shaping structure further comprises a shaping sleeve (5), and the air bag (1) and the metal sheet (2) are located in the shaping sleeve (5).

7. The airbag mold for manufacturing a batter post according to claim 6, wherein The air bag (1) is provided with at least one air nozzle capable of communicating with the outside, and the two ends of the shaping sleeve (5) are closed, and the air nozzle extends out of one end of the shaping sleeve (5).

8. The airbag mold for manufacturing a batter post according to claim 7, wherein The air bag (1) has several air bags, and the shaping sleeve (5) is provided with a support (6), and when the air bag is inflated, the outer walls of the several air bags (1) are in close contact with the outer walls of the shaping sleeve (5) and the support (6) respectively.

9. The airbag mold for manufacturing a batter post according to claim 1, wherein The outer wall of the metal sheet (2) has a layer of polyurethane coating, and the air bag (1) is provided with at least one air nozzle capable of communicating with the outside.

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