Air pressure recoil prefabricated template

Abstract

The utility model discloses an air pressure recoil prefabricated formwork, relates to the technical field of building structures, and solves the technical problems that an existing cavity concrete structure construction formwork cannot be detached, and the later chiseling cost is huge. Comprising a prefabricated formwork body and a set of stiffening ribs arranged in the prefabricated formwork body. An air passage is mounted in the prefabricated template body through a group of stiffening ribs; according to the utility model, the air channel cover plate is connected in the side protection groove of the prefabricated template body through the positioning nail and covers the air channel, and then the transparent adhesive tape is adopted to seal the air hole groove so as to prevent concrete leakage from polluting the air inlet hole; and then a prefabricated formwork body is formed after binding of the steel bars is completed, the prefabricated formwork body is sealed after the whole prefabricated formwork body is placed in the cavity, and concrete is poured. By means of the design, the forming quality of cavity concrete can be remarkably improved, the requirement of a design drawing is met, an extruded sheet formwork is not needed, material input is reduced, and meanwhile the huge cost of later chiseling is avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to building structure technical field especially relates to a gas pressure backflush prefabricated template. BACKGROUND

[0002] Prefabricated formwork generally refers to the formwork that is prefabricated in a factory or a specific place and used for site pouring or installation. These formworks can be metal, plastic, wood or other materials, which are designed in specific shapes and sizes to meet specific construction or manufacturing requirements. With the vigorous development of assembly structure, full cast-in-situ exterior wall is gradually popularized in residential buildings, and in this case, concrete structural members with narrow cavities such as air conditioning bay windows appear.

[0003] At present, the concrete structural member with cavity is five-sided closed and only one side is open, which makes it difficult to remove the formwork after design and construction. The traditional solutions mainly have the following two ways:

[0004] Method one: change the cavity outside to masonry, this method involves the interface of different materials, and may cause paint cracking in the later period;

[0005] Method two: fill the cavity with extruded board, but because most cavities involve later pipeline construction, combined with the limited operation of exterior wall, the cost of extruded board cutting in the later period is large. Therefore, in view of the above problems, a gas pressure backflush prefabricated template is proposed. CONTENT OF THE UTILITY MODEL

[0006] The utility model aims at solving one of the technical problems existing in the prior art. To this end, the utility model provides a gas pressure backflush prefabricated template, which solves the problems of the existing cavity concrete structure construction formwork that cannot be removed and the huge cost of cutting in the later period.

[0007] To achieve the above purpose, according to the first aspect of the embodiment of the utility model, a gas pressure backflush prefabricated template is provided, which comprises a prefabricated formwork body and a group of stiffening ribs arranged in the prefabricated formwork body;

[0008] The prefabricated formwork body is provided with an air duct through a group of stiffening ribs;

[0009] One side of the prefabricated formwork body is provided with a gas hole groove, and the center of the gas hole groove is provided with a gas inlet hole communicated with the air duct.

[0010] Further improvement lies in that the number of the group of stiffening ribs is four, which are respectively arranged obliquely in the prefabricated formwork body.

[0011] Further improvement lies in that one side of each of the stiffening ribs is respectively connected to each right-angle end of the prefabricated formwork body in an inclined manner, the air channel is located in the middle of the prefabricated formwork body, and the outer wall surface of the air channel is respectively fixedly connected to the other side of each stiffening rib.

[0012] Further improvement lies in that the same-side pair of stiffening ribs are symmetrical to another same-side pair of stiffening ribs.

[0013] Further improvement lies in that the adjacent pair of stiffening ribs are in an inverted eight-character shape.

[0014] Further improvement lies in that the radius of the air channel gradually expands from one side of the air hole groove to the other side of the protection groove in a trumpet shape.

[0015] Further improvement lies in that an air hole block is arranged in the port of the air hole groove.

[0016] Further improvement lies in that the air channel cover plate is further provided, and the air channel cover plate is provided with positioning nails at four corners.

[0017] Further improvement lies in that the specifications of each positioning nail are the same.

[0018] Further improvement lies in that the prefabricated formwork body is provided with a protection groove at one side, the protection groove is provided with positioning holes at four corners for mounting the positioning nails, in implementation, the air channel cover plate is connected to the side protection groove of the prefabricated formwork body through the positioning nails and covers the air channel, the air hole groove is closed by using transparent adhesive tape to avoid concrete leakage pollution of the air inlet; then the steel bars are bound to form the prefabricated formwork body, the whole is placed in the cavity, the prefabricated formwork body is closed, and the concrete is poured. When the formwork is removed, the adhesive tape on the upper part of the air hole groove is torn, the air nozzle is inserted into the air inlet and rotated to make the air hole block clamp the air nozzle, and then the prefabricated panel is slowly pushed out of the cavity by blowing. The prefabricated panel can significantly improve the forming quality of the cavity concrete, meets the design drawing requirements, does not need to use extruded board formwork, reduces material investment, avoids huge cost of post-punching, has high turnover rate, and is simple to install and remove.

[0019] Compared with the prior art, the utility model has the advantages that:

[0020] The utility model discloses a prefabricated formwork installation and removal are comparatively simple through the design of prefabricated formwork, this design not only can obviously promote the forming quality of cavity concrete, meets the design drawing requirement, does not need to squeeze the plate formwork, and avoids the huge cost of post -punching while reducing the material investment. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the vertical surface structure schematic diagram of the utility model.

[0022] Figure 2 It is the cross section structure schematic diagram of the utility model.

[0023] Figure 3 It is the back vertical surface structure schematic diagram of the utility model.

[0024] Figure 4 It is the longitudinal section structure schematic diagram of the utility model.

[0025] Mark in drawing: 1, air hole;2, prefabricated panel;3, protection groove;4, air passage;5, positioning hole;6, air passage cover plate;7, positioning nail;8, stiffening rib;9, air hole recess;10, air hole block. DETAILED DESCRIPTION

[0026] The technical scheme of the utility model will be described clearly and completely in combination with examples, and obviously, the described examples are only a part of the examples of the utility model, not all the examples. Based on the examples in the utility model, all other examples obtained by the ordinary skill in the art without making creative labor belong to the range of the utility model protection.

[0027] As Figures 1 to 4 Indicated, a kind of air pressure backflush prefabricated formwork, including prefabricated formwork body 2 and the group of stiffening rib 8 being set in prefabricated formwork body 2;

[0028] Specific connection scheme is as follows:

[0029] Prefabricated formwork body 2 is installed with air passage 4 by the group of stiffening rib 8, the radius of air passage 4 gradually expands from the side of air hole recess 9 to the side of protection groove 3, is horn-shaped, so that prefabricated formwork is more easily to whole break out when air intake;

[0030] Specifically, the side of the prefabricated template body 2 is provided with an air hole groove 9, and the center of the air hole groove 9 is provided with an air inlet hole 1 communicated with the air duct 4, the air inlet hole 1 is arranged in the air hole groove 9, which can protect the air inlet hole 1 from being polluted by concrete or damaged after multiple turnovers, thereby improving the service life of the template, and the air hole groove 9 is provided with an air hole clamping block 10, which can prevent the air nozzle from falling out.

[0031] As a preferred embodiment, the number of the set of stiffening ribs 8 is four, which are arranged obliquely in the prefabricated template body 2, and one side of each stiffening rib 8 is obliquely connected to each right-angled end of the prefabricated template body 2, the air duct 4 is located in the middle of the prefabricated template body 2, and the outer wall surface of the air duct 4 is fixedly connected to the other side of each stiffening rib 8, and the stiffening ribs 8 on the same side are symmetrical to the stiffening ribs 8 on the other side, and the adjacent stiffening ribs 8 are in inverted V shape, which can support the air duct and improve the stability during use.

[0032] As shown in Figures 2 to 4 , the present embodiment further provides another embodiment, specifically as follows: further comprising an air duct cover plate 6, the air duct cover plate 6 is provided with positioning nails 7 at four corners;

[0033] Specifically, the specifications of each positioning nail 7 are the same, the prefabricated template body 4 is provided with a protection groove 3 on one side, the protection groove 3 is provided with positioning holes 5 matched with the positioning nails 7 at four corners, the positioning holes 5 are parallel to the air duct direction and are not provided with threads, so as to be more easily separated from the prefabricated panel after being subjected to air pressure, the air duct cover plate 6 is installed in the protection groove 3 through the positioning nails 7 during installation, thereby preventing concrete from entering the air duct 4 during pouring of concrete, specifically, the site construction personnel connect the air duct cover plate 6 to the side protection groove 3 of the prefabricated template body 2 through the positioning nails 7, and cover the air duct 4, then use transparent adhesive tape to close the air hole groove 9 to avoid concrete leakage pollution of the air inlet hole 1, then form the prefabricated template body 2 after steel bar binding is completed, and then close the prefabricated template body 2 after the whole is placed in the cavity, and then pour concrete.

[0034] As shown in Figures 1 to 4 , it should be noted that the prefabricated template body 2 in the application file is made of flat iron with a thickness greater than or equal to 2 mm, and the actual sizes of other components are selected and installed according to the actual needs before implementation. In addition, it should be noted that the present application only improves the shortcomings that the existing cavity concrete structure construction template cannot be removed and the cost of later chiseling is huge, and does not involve other aspects; the working principle of the air pressure backflushing prefabricated template is introduced as follows:

[0035] The specific working process of the new scheme is as follows: the construction personnel on site connect the air passage cover plate 6 to the side protection groove 3 of the prefabricated formwork body 2 through the positioning nails 7, cover the air passage 4, and then seal the air hole groove 9 with transparent adhesive tape to avoid concrete leakage pollution into the air inlet hole 1; then the steel bar is bound to form the prefabricated formwork body 2, the whole is placed in the cavity, the prefabricated formwork body 2 is closed, and the concrete is poured.

[0036] When the formwork is to be removed, the adhesive tape on the upper part of the air hole groove 9 is torn off, the air nozzle is inserted into the air inlet hole 1, rotated to make the air hole clamping block 10 clamp the air nozzle, and then inflated to slowly push out the prefabricated panel 2 from the cavity. The utility model can significantly improve the forming quality of the cavity concrete, meet the design drawing requirements, and does not need to use the extruded plate formwork, reduces the material investment, avoids the huge cost of post-period punching, has high turnover rate, and is simple to install and remove.

[0037] The above examples are only used to illustrate the technical method of the utility model and not to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical method of the utility model can be modified or replaced equivalently without departing from the spirit and scope of the technical method of the utility model.

Claims

1. An air pressure recoil preform template, characterized by, The utility model relates to a prefabricated template body (2) and a set of stiffening ribs (8) arranged in the prefabricated template body (2). The air duct (4) is installed in the prefabricated template body (2) through the set of stiffening ribs (8). A gas hole (1) is arranged in the center of the gas hole groove (9) and is in communication with the air duct (4).

2. The air pressure recoil formwork according to claim 1, wherein, The number of the set of stiffening ribs (8) is four, and each of the stiffening ribs (8) is arranged obliquely in the prefabricated template body (2).

3. A gas pressure recoil formwork according to claim 2, wherein Each of the stiffening ribs (8) is obliquely connected to each of the right-angle ends of the prefabricated template body (2), the air duct (4) is located in the middle of the prefabricated template body (2), and the outer wall surface of the air duct (4) is fixedly connected to the other side of each of the stiffening ribs (8).

4. The air pressure recoil formwork according to claim 2, wherein, The pair of stiffening ribs (8) on the same side are symmetrical to the pair of stiffening ribs (8) on the other side.

5. The air pressure recoil formwork according to claim 2, wherein, The pair of stiffening ribs (8) adjacent to each other are in the shape of inverted eight.

6. The air pressure recoil formwork of claim 1, wherein, The radius of the air duct (4) gradually increases from one side of the gas hole groove (9) to the other side of the protection groove (3) and is in the shape of a horn.

7. The air pressure recoil formwork of claim 1, wherein, The gas hole (1) is arranged in the port of the gas hole groove (9).

8. The air pressure recoil formwork of claim 1, wherein, The utility model also comprises an air duct cover plate (6), and the air duct cover plate (6) is provided with positioning nails (7) at four corners.

9. A gas pressure recoil formwork according to claim 8, wherein, The specifications of each of the positioning nails (7) are the same.

10. The air pressure recoil preform template of claim 8, wherein, The prefabricated template body (2) is provided with a protection groove (3) on one side, and the protection groove (3) is provided with positioning holes (5) at four corners for matching the positioning nails (7).

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