Foldable protective device

Abstract

The utility model discloses a foldable protective device which comprises a first fixing net and a second fixing net, a first folding net is connected between the front side of the first fixing net and the front side of the second fixing net, and a second folding net is connected between the rear side of the second fixing net and the rear side of the second fixing net. Each of the first folding net and the second folding net comprises a first folding net piece and a second folding net piece, the first folding net piece is hinged to the first fixed net through a first hinge piece, the first folding net piece is hinged to the second folding net piece through a second hinge piece, and the second folding net piece is hinged to the second fixed net through a third hinge piece. The utility model has the beneficial effects that the whole structure has a folding state and an unfolding state, a panel structure is formed in the folding state, the space is not occupied, the turnover transportation is convenient, and a protective cover body is formed in the unfolding state, so that the hole is protected and covered; the whole structure is simple, common materials are adopted for design and manufacturing, on-site direct machining and production are facilitated, the whole cost is low, and cost reduction and efficiency improvement are facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of building construction safety protection, and in particular relates to a foldable protection device. Background Art

[0002] In the field of safety protection of construction projects, some construction openings require safety protection, and there are openings of different sizes on the construction site. The existing technology requires manpower to do safety protection according to the size of the opening, which is not only inefficient, time-consuming and labor-intensive, but also the materials cannot be recycled, resulting in material waste, and there are safety hazards. Therefore, how to design the protection device according to the required opening size and facilitate installation and recycling is a difficult problem that technical personnel in this field have been thinking about. Utility Model Content

[0003] The purpose of the utility model is to provide a foldable protective device, which solves the problem of recycling the protective device.

[0004] The purpose of the utility model is achieved through the following technical solutions:

[0005] A foldable protective device comprises a first fixed net and a second fixed net, wherein the first folding net is connected between the front side of the first fixed net and the front side of the second fixed net, and the second folding net is connected between the rear side of the first fixed net and the rear side of the second fixed net, and the first folding net and the second folding net each comprise a folding net piece and a folding net piece, wherein the folding net piece is hinged to the first fixed net via a first hinge, the folding net piece is hinged to the folding net piece via a second hinge, and the folding net piece is hinged to the second fixed net via a third hinge.

[0006] Furthermore, at least one of the first fixed net, the second fixed net, the first folded net and the second folded net is a mesh structure formed by welding transverse steel bars, longitudinal steel bars and oblique steel bars.

[0007] Furthermore, at least one of the first hinge, the second hinge and the third hinge is a hinge.

[0008] Furthermore, the first fixed net, the second fixed net, the first folding net and the second folding net form a regular quadrangular pyramid shape.

[0009] Furthermore, the first fixed net and the second fixed net are both in the shape of isosceles triangles.

[0010] Furthermore, the first fixed net and the second fixed net are arranged bilaterally symmetrically.

[0011] Furthermore, the first folded net and the second folded net are both in the shape of isosceles triangles.

[0012] Furthermore, the first folding net and the second folding net are both divided into one folding net and two folding nets in the shape of a right triangle along the central symmetry line.

[0013] Furthermore, the first folding net and the second folding net are arranged symmetrically front to back.

[0014] Furthermore, the rotation axes of the first hinge and the third hinge are the intersection lines of the fixed net and the folding net, and the rotation axis of the second hinge is the central symmetry line of the folding net.

[0015] Beneficial effects of the utility model:

[0016] (1) The overall structure has two forms: folding and unfolding. In the folded state, it forms a panel structure that does not occupy space and is convenient for turnover and transportation. In the unfolded state, it forms a protective cover to achieve protective covering of the hole.

[0017] (2) The overall structure is simple and is designed and manufactured using common materials, which facilitates direct processing and production on site. The overall cost is low, which is conducive to reducing costs and increasing efficiency.

[0018] The aforementioned main scheme of the utility model and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and protected by the utility model; and in the utility model, (non-conflicting options) options and other options can also be freely combined. After understanding this scheme, those skilled in the art can understand that there are many combinations based on the existing technology and common knowledge, all of which are technical schemes to be protected by the utility model, and they are not exhaustively listed here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model.

[0020] Figure 2 It is a schematic diagram of the main structure of the utility model.

[0021] Figure 3 It is a schematic side view of the structure of the utility model.

[0022] Figure 4 It is a schematic top view of the structure of the utility model.

[0023] In the figure: 1-first fixed net, 2-second fixed net, 3-first folding net, 4-second folding net, 5-first hinge, 6-second hinge, 7-third hinge, 101-transverse steel bars, 102-longitudinal steel bars, 103-oblique steel bars, 201-one folding net, 202-two folding nets. DETAILED DESCRIPTION

[0024] The present invention will be further described below in conjunction with specific embodiments and drawings.

[0025] refer to Figure 1 to Figure 4 As shown, a foldable protective device includes a first fixed net 1, a second fixed net 2, a first folding net 3, a second folding net 4, a first hinge 5, a second hinge 6 and a third hinge 7, which is used to protect and shield rectangular, circular or special-shaped openings on buildings.

[0026] A first folding net 3 is connected between the front side of the first fixed net 1 and the front side of the second fixed net 2, and a second folding net 4 is connected between the rear side of the first fixed net 1 and the rear side of the second fixed net 2. The protective nets on four sides form a complete protective surface to achieve enclosure protection for the sides of the cave entrance.

[0027] The first folding net 3 and the second folding net 4 each include a first folding net 201 and a second folding net 202. The first folding net 201 is hinged to the first fixed net 1 via a first hinge 5. The first folding net 201 is hinged to the second folding net 202 via a second hinge 6. The second folding net 202 is hinged to the second fixed net 2 via a third hinge 7.

[0028] Since the folding net is divided into two parts and each node is hingedly connected, the folding net itself has the function of folding, so when the two folding nets are unfolded, the two fixed nets are separated, and the folding net and the fixed net together form a protective cover structure. When the folding nets are overlapped, the folding net itself folds into a panel shape, and the two fixed nets are close to form a panel shape.

[0029] The first fixed net 1, the second fixed net 2, the first folding net 3 and the second folding net 4 are all mesh structures welded by transverse steel bars 101, longitudinal steel bars 102 and oblique steel bars 103. The materials are easy to obtain and the structure is firmly welded. The formed mesh has good protection function. The first hinge 5, the second hinge 6 and the third hinge 7 are all hinges to achieve relative flipping of the two connected parts.

[0030] The first fixed net 1, the second fixed net 2, the first folding net 3 and the second folding net 4 are all isosceles triangles of the same shape, and the first fixed net 1 and the second fixed net 2 are arranged symmetrically, and the first folding net 3 and the second folding net 4 are arranged symmetrically front to back.

[0031] Thus, the first fixed net 1, the second fixed net 2, the first folding net 3 and the second folding net 4 form a regular tetrahedron shape, which has no gaps and can completely cover the hole. The regular tetrahedron shape has the characteristic of structural stability. When the folding net is locked in the unfolded state, it can provide a stable and reliable safety protection structure.

[0032] The first folding net 3 and the second folding net 4 are divided into a right-angled triangle shaped folding net one 201 and a second folding net 202 along the central symmetry line, which facilitates the two folding parts to be folded in the center and ensures that the folding parts of the two folding nets do not affect each other, so that the thickness of the folded device is thinner.

[0033] The rotation axis of the first hinge 5 and the third hinge 7 is the intersection line of the fixed net and the folding net, that is, the straight line where the plane of the fixed net intersects the plane of the folding net, which is also the edge line of the protective net for this embodiment. The rotation axis of the second hinge 6 is the central symmetry line of the folding net, which is also the edge line of the folding member for this embodiment.

[0034] Deployment method: Two workers stand and stretch the fixed net to make the folding net unfold from the retracted state to the same state as the fixed net. At this time, the protective opening formed at the bottom of the device is rectangular, which means the unfolding is complete. To ensure the unfolding state, temporary fixings can be installed between the two folding parts, such as welding steel bars, to lock the folding surface.

[0035] Contraction method: Two workers stand and press the fixed net to fold the folding net, so that the foldable net shrinks from the unfolded state. At this time, the two folding parts and the second hinged part shrink inward at the same time, and the final finished surface is a triangle, which means the shrinkage is completed.

[0036] The above basic examples and further optional examples of the utility model can be freely combined to form multiple embodiments, which are all embodiments that can be adopted and claimed for protection by the utility model. In the scheme of the utility model, each optional example can be arbitrarily combined with any other basic examples and optional examples.

[0037] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable protective device, comprising a first fixed net (1) and a second fixed net (2), characterized in that: A first folding net (3) is connected between the front side of the first fixed net (1) and the front side of the second fixed net (2); a second folding net (4) is connected between the rear side of the first fixed net (1) and the rear side of the second fixed net (2); the first folding net (3) and the second folding net (4) both comprise a first folding net (201) and a second folding net (202); the first folding net (201) is hinged to the first fixed net (1) via a first hinge (5); the first folding net (201) is hinged to the second folding net (202) via a second hinge (6); and the second folding net (202) is hinged to the second fixed net (2) via a third hinge (7).

2. The foldable protective device according to claim 1, characterized in that: At least one of the first fixed net (1), the second fixed net (2), the first folded net (3) and the second folded net (4) is a mesh structure formed by welding transverse steel bars (101), longitudinal steel bars (102) and oblique steel bars (103).

3. The foldable protective device according to claim 1 or 2, characterized in that: At least one of the first hinge (5), the second hinge (6) and the third hinge (7) is a hinge.

4. The foldable protective device according to claim 1, characterized in that: The first fixed net (1), the second fixed net (2), the first folded net (3) and the second folded net (4) form a regular quadrangular pyramid shape.

5. The foldable protective device according to claim 1, characterized in that: The first fixed net (1) and the second fixed net (2) are both in the shape of isosceles triangles.

6. The foldable protective device according to claim 1 or 5, characterized in that: The first fixed net (1) and the second fixed net (2) are arranged symmetrically.

7. The foldable protective device according to claim 1, characterized in that: The first folded net (3) and the second folded net (4) are both in the shape of isosceles triangles.

8. The foldable protective device according to claim 1 or 7, characterized in that: The first folding net (3) and the second folding net (4) are both divided into a first folding net (201) and a second folding net (202) in the shape of a right triangle along the central symmetry line.

9. The foldable protective device according to claim 1 or 7, characterized in that: The first folding net (3) and the second folding net (4) are arranged symmetrically front to back.

10. The foldable protective device according to claim 1, characterized in that: The rotation axes of the first hinge (5) and the third hinge (7) are the intersection lines of the fixed net and the folding net, and the rotation axis of the second hinge (6) is the central symmetry line of the folding net.

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