Protective fence

Abstract

The present invention provides a protective fence that can prevent cargo handling machinery from coming into contact with the lower end of an object to be protected. [Solution] The protective fence 1 according to the present invention is a protective fence 1 for protecting an object to be protected (fire-resistant covered column 11) installed on an installation surface (floor 10), and is characterized by comprising a frame-like body 2 formed by one or more rectangular frame parts (3A to 3F), and a surface part 5 provided on the frame parts (3A to 3D) so as to close the lower frame side of the opening (3AA to 3DA) of the frame parts (3A to 3D) of the frame-like body 2.

Description

Technical Field

[0001] The present invention relates to a protective fence for protecting an object to be protected provided on an installation surface.

Background Art

[0002] A protective fence (a column collision prevention fence) for preventing frontal and side collisions with columnar structures such as utility poles, trees, and signposts, and the ends of guard cables is known (see Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] For example, as shown in FIG. 9, in a warehouse H where a load-carrying machine such as a forklift 12 travels, when there is an object to be protected such as a fire-resistant coated column 11 with a fire-resistant coating 11a applied to the surface of the column, the tip 12t of the fork 12a of the forklift 12 may contact the fire-resistant coating 11a of the fire-resistant coated column 11 and damage the fire-resistant coating 11a. For example, when moving a load 15 stacked on a pallet 16 placed on the floor 10 near the fire-resistant coated column 11, or when moving the pallet 16 on which the load 15 is stacked onto the floor 10 near the fire-resistant coated column 11, etc., the tip 12t of the fork 12a of the forklift 12 inserted so as to penetrate the fork insertion space 16a of the pallet 16 may contact the fire-resistant coating 11a of the fire-resistant coated column 11 and damage the fire-resistant coating 11a. Therefore, if there are objects to be protected, such as fire-resistant columns 11, inside warehouse H, it is conceivable to use a protective fence like the one disclosed in Patent Document 1 mentioned above to protect the objects to be protected. However, with the protective fence disclosed in Patent Document 1, a gap is formed between the lower end of the protective fence and the floor, so that cargo handling machinery (for example, the tip 12t of the fork 12a of the forklift 12 mentioned above) can pass through the gap and come into contact with the lower end of the object to be protected. In other words, the protective fence disclosed in Patent Document 1 had the problem that it could not prevent the cargo handling machine from coming into contact with the lower end of the object being protected. This invention has been made in view of the above-mentioned problems, and provides a protective fence that can prevent a cargo handling machine from coming into contact with the lower end of an object to be protected. [Means for solving the problem]

[0005] The protective fence according to the present invention is a protective fence for protecting an object to be protected installed on an installation surface, and is characterized by comprising a frame-like body formed by one or more rectangular frame parts, and a surface part provided on the frame part so as to close the lower frame side of the opening of the frame part of the frame-like body. Furthermore, the frame-like body is composed of a rectangular parallelepiped with six square frame sections, and the face section is composed of face plates provided to close the lower end of each opening in the four side frame sections that make up the rectangular parallelepiped. The rectangular parallelepiped is installed such that each side frame section surrounds the object to be protected and the surface of each face plate faces the object to be protected, and the lower frame section of the rectangular parallelepiped is attached to the installation surface. Furthermore, the frame-like body is composed of a front frame portion, a left frame portion provided to the left of the front frame portion, and a right frame portion provided to the right of the front frame portion. The surface portion is composed of a face plate provided to close the lower end of the opening of each frame portion. The frame-like body is installed so that the surface of each frame portion and each face plate faces the object to be protected, and the lower frame of each frame portion of the frame-like body is attached to the installation surface. Furthermore, the frame-like body is composed of left and right frame sections, and the surface section is composed of face plates provided to close the lower end of the openings in each frame section, and the frame-like body is installed so that the surface of each frame section and each face plate faces the object to be protected, and the lower frame of each frame section of the frame-like body is attached to the installation surface. Furthermore, the frame-like body is composed of a single rectangular frame section, and the surface section is composed of a face plate provided to close the lower end of the opening in the frame section. The frame-like body is installed so that the frame section and the face plate surface face the object to be protected, and the lower frame of the frame section is attached to the installation surface. The protective fence according to the present invention provides a protective fence that can prevent a cargo handling machine from coming into contact with the lower end of the object to be protected. [Brief explanation of the drawing]

[0006] [Figure 1] This diagram shows a protective fence, where (a) is a perspective view showing the relationship between the protective fence and the fire-resistant cladding, and (b) is a perspective view of the protective fence (Embodiment 1). [Figure 2] This is a diagram showing a protective fence, where (a) is a front view and (b) is a top view (Embodiment 1). [Figure 3] This diagram shows a protective fence; (a) is a view along arrow AA in Figure 2(a), and (b) is a cross-sectional view AA of (a) (Embodiment 1). [Figure 4] A perspective view showing the relationship between the protective fence and the fire-resistant cladding (Embodiment 2). [Figure 5] This diagram shows a protective fence, where (a) is a front view and (b) is a view of (a) as indicated by arrow AA (Embodiment 2). [Figure 6] A perspective view showing the relationship between the protective fence and the fire-resistant cladding (Embodiment 3). [Figure 7] This diagram shows a protective fence, where (a) is a left side view and (b) is a view of (a) as indicated by arrow AA (Embodiment 3). [Figure 8] An explanatory diagram (Embodiment 1) showing the lower end of a fire-resistant coated column protected by a protective fence. [Figure 9] A diagram showing a situation where the tip of a forklift's forks collides with the fire-resistant coating of a fire-resistant column (conventional example). [Modes for carrying out the invention]

[0007] Embodiment 1 As shown in Figures 1 to 3, the protective fence 1 according to Embodiment 1 is a protective fence for protecting an object to be protected installed on an installation surface, and comprises a frame-like body 2 formed by one or more rectangular frame parts, and a surface part 5 provided on the frame part so as to close the lower frame side of the opening of the frame part of the frame-like body 2. The installation surface is, for example, a reinforced concrete floor 10, and the object to be protected is, for example, a fire-resistant coated column 11 in which a fire-resistant coating 11a is applied to the surface of the column. For example, as shown in Figure 8, the floor 10 is the floor inside warehouse H on which the cargo handling machine operates, the fire-resistant coated column 11 is a fire-resistant coated column inside warehouse H on which the cargo handling machine operates, and the cargo handling machine is a forklift 12. In this specification, up, down, left, right, front, and back are defined and explained as the directions shown in each figure.

[0008] As shown in Figure 1(b), the frame-like body 2 is composed of a rectangular parallelepiped 3X having six rectangular frame sections, namely, a front frame section 3A, a left frame section 3B, a right frame section 3C, a rear frame section 3D, an upper frame section 3E, and a lower frame section 3F. In other words, each frame section is a rectangular frame section enclosed on all four sides by frame component members, and the inside of the frame section is a rectangular opening. The surface portion 5 is composed of face plates 5A, 5B, 5C, and 5D, which are provided to close the lower ends of the openings 3AA, 3BA, 3CA, and 3DA of the front frame portion 3A, left frame portion 3B, right frame portion 3C, and rear frame portion 3D, which are the four side frame portions that make up the frame-shaped rectangular parallelepiped 3X. Each panel 5A, 5B, 5C, and 5D is attached to the lower end of the front frame 3A, left frame 3B, right frame 3C, and rear frame 3D using fasteners 7 such as screws.

[0009] Each of the faceplates 5A, 5B, 5C, and 5D is made of, for example, checkered steel plate. That is, the face plate 5A is provided so as to close the lower end side in the opening 3AA of the front frame portion 3A, the face plate 5B is provided so as to close the lower end side in the opening 3BA of the left frame portion 3B, the face plate 5C is provided so as to close the lower end side in the opening 3CA of the right frame portion 3C, and the face plate 5D is provided so as to close the lower end side in the opening 3DA of the rear frame portion 3D.

[0010] The protective fence 1 according to Embodiment 1 is such that the front frame portion 3A, the left frame portion 3B, the right frame portion 3C, and the rear frame portion 3D, which are the side frame portions of the frame-shaped rectangular parallelepiped 3X, surround the periphery of the fire-resistant coated column 11, and the plate surfaces of the face plates 5A, 5B, 5C, and 5D are installed so as to face the lower end sides of the respective side surfaces of the fire-resistant coated column 11 having a square cross section. The lower frame portion 3F of the frame-shaped rectangular parallelepiped 3X is fixed to the floor 10 by a fixture 6 such as an anchor (see FIGS. 1(b) and 3).

[0011] The frame-shaped rectangular parallelepiped 3X is constituted by using frame constituent members such as angle steel (equilateral angle steel). For example, first, the ends of the angle steels constituting the side portions of each of the quadrangular frames of the left frame portion 3B, the right frame portion 3C, and the rear frame portion 3D are joined by joining means such as welding outside the drawing or bolts and nuts, and a frame portion constituent body 3BCD in a concave shape in plan view in which the left frame portion 3B, the right frame portion 3C, and the rear frame portion 3D are combined as shown in FIG. 1(b) is manufactured. Then, after installing the frame portion constituent body 3BCD so that the fire-resistant coated column 11 is positioned inside the concave portion formed by the left frame portion 3B, the right frame portion 3C, and the rear frame portion 3D, as shown in FIG. 3(a), an angle steel serving as the lower frame 3Au of the front frame portion 3A is arranged between the front lower corner portion of the left frame portion 3B and the front lower corner portion of the right frame portion 3C facing each other. The lower frame portion 3F of the frame-shaped rectangular parallelepiped 3X is formed by the lower frame 3Au and the lower frame of the frame portion constituent body 3BCD, and the lower frame portion 3F of the frame-shaped rectangular parallelepiped 3X is fixed to the floor 10 using the fixture 6.

[0012] For example, the angle steel that becomes the lower frame 3Au is fixed to a predetermined position on the floor 10 by a fixture 6 such as an anchor. After positioning the front lower corner of the left frame part 3B above the left end of the lower frame 3Au and positioning the front lower corner of the right frame part 3C above the right end of the lower frame 3Au, the lower frame of the frame part assembly 3BCD is fixed to the floor 10 by the fixture 6, whereby the lower frame part 3F of the frame-shaped rectangular parallelepiped 3X is fixed to the floor 10 (see Fig. 3(a)). Furthermore, as shown in Fig. 2(b), the front upper corners of the left frame part 3B and the right frame part 3C facing each other are connected by using angle steel that becomes the upper frame 3At of the front frame part 3A, whereby the front frame part 3A of the frame-shaped rectangular parallelepiped 3X is formed on the front side of the fire-resistant coated column 11, and the frame-shaped rectangular parallelepiped 3X having six rectangular frame parts 3A to 3F is manufactured and fixed to the floor 10. In addition, the connecting means for connecting the upper frame 3At and the left frame part 3B and the connecting means for connecting the upper frame 3At and the right frame part 3C are configured by using a connecting plate material such as a bracket 8 and a screw 8a (see Fig. 2(b)).

[0013] Thereafter, the face plates 5A, 5B, 5C, 5D are attached to the lower ends of the respective frame parts 3A, 3B, 3C, 3D by fixtures 7 such as screws so as to close the lower ends of the openings 3AA, 3BA, 3CA, 3DA of the front frame part 3A, the left frame part 3B, the right frame part 3C, and the rear frame part 3D, respectively, thereby forming a protective fence 1 in which the periphery of the lower end of the fire-resistant coated column 11 is surrounded by the face plates 5A, 5B, 5C, 5D, and constructing a protective fence 1 that is fixed to the floor 10 and protects the fire-resistant coated column 11.

[0014] According to the protective fence 1 according to Embodiment 1, since the face plates 5A, 5B, 5C, 5D that close the lower ends of the openings 3AA, 3BA, 3CA, 3DA of the front frame part 3A, the left frame part 3B, the right frame part 3C, and the rear frame part 3D, which are the side frame parts of the frame-shaped rectangular parallelepiped 3X surrounding the periphery of the lower end of the fire-resistant coated column 11, are provided, it is possible to prevent a load-carrying machine from contacting the lower end of the fire-resistant coated column 11 and damaging the fire-resistant coating 11a. For example, as shown in Figure 8, the tip 12t of the forks 12a of a forklift 12, which is a cargo handling machine, comes into contact with the faceplates 5A, 5B, 5C, and 5D. This makes it possible to provide a protective fence 1 that prevents the tip 12t of the forks 12a of the forklift 12 from coming into contact with the fire-resistant covering column 11 and damaging the fire-resistant covering 11a.

[0015] Embodiment 2 As shown in Figures 4 and 5, the protective fence 1 according to Embodiment 2 is configured similarly to the protective fence 1 according to Embodiment 1, comprising a frame-like body 2 formed by one or more rectangular frame portions, and a surface portion 5 provided on the frame portion so as to close the lower frame side of the opening of the frame portion of the frame-like body 2. In the protective fence 1 according to Embodiment 2, the frame-like body 2 is composed of a front frame 3G, a left frame portion 3H provided on the left side of the front frame portion 3G, and a right frame portion 3I provided on the right side of the front frame portion 3G, and the face portion 5 is composed of face plates 5G, 5H, and 5I provided to close the lower ends of the openings 3GA, 3HA, and 3IA of each frame portion 3G, 3H, and 3I, respectively. Then, the frame-shaped body 2 is installed so that the surface of each frame section 3G, 3H, 3I and each face panel 5G, 5H, 5I faces the fire-resistant covered column 11, which is the object to be protected, and the lower frames of each frame section 3G, 3H, 3I of the frame-shaped body 2 are attached to the floor 10, which is the installation surface, thereby forming a protective fence 1 that protects the fire-resistant covered column 11.

[0016] In other words, the protective fence 1 according to Embodiment 2 is configured such that the frame-like body 2 is made up of a frame component 3Y similar to the concave frame component 3BCD described in Embodiment 1, and has a surface portion 5 made up of face plates 5G, 5H, 5I that close the lower ends of the openings 3GA, 3HA, 3IA of the front frame portion 3G, left frame portion 3H, and right frame portion 3I, respectively, which constitute the frame component 3Y.

[0017] Furthermore, an overhang 60 extending toward the right frame 3I is provided on the rear end side of the lower frame of the left frame 3H, and an overhang 60 extending toward the left frame 3H is provided on the rear end side of the lower frame of the right frame 3I. These overhangs 60, 60, and the lower frames of the front frame 3G, left frame 3H, and right frame 3I are fixed to the floor 10 by fasteners 6 such as anchors to constitute the protective fence 1 according to Embodiment 2 (see Figure 5(b)). In this configuration, the lower frame of the left frame section 3H and the lower frame of the right frame section 3I are each equipped with an overhanging portion 60, and these overhanging portions 60 are fixed to the floor 10 by fasteners 6. This improves the effect of preventing the left frame section 3H and the right frame section 3I from falling toward the fire-resistant covered column 11.

[0018] The protective fence 1 according to Embodiment 2 provides the same effects as the protective fence 1 according to Embodiment 1. The protective fence 1 according to Embodiment 2 can prevent damage to the fire-resistant coating 11a from occurring when a cargo handling machine comes into contact with the lower end of a fire-resistant coated column 11, which has a configuration in which one side of the column faces the wall W and fire-resistant coating 11a is provided on three sides of the column that protrude from the wall W. In other words, similar to the protective fence 1 according to Embodiment 2, for example, the tip 12t of the fork 12a of the forklift 12 comes into contact with the faceplates 5G, 5H, 5I, so it is now possible to provide a protective fence 1 that can prevent the tip 12t of the fork 12a of the forklift 12 from coming into contact with the lower end of the fire-resistant covering column 11 and damaging the fire-resistant covering 11a.

[0019] Embodiment 3 As shown in Figures 6 and 7, the protective fence 1 according to Embodiment 3 is configured similarly to the protective fence 1 according to Embodiments 1 and 2, comprising a frame-like body 2 formed by one or more rectangular frame portions, and a surface portion 5 provided on the frame portion so as to close the lower frame side of the opening of the frame portion of the frame-like body 2. In Figure 6, reference numeral 9 denotes a guard for protecting wall W. In the protective fence 1 according to Embodiment 3, the frame-like body 2 is composed of a left frame portion 3J and a right frame portion 3K, and the face portion 5 is composed of face plates 5J and 5K provided to close the lower ends of the openings 3JA and 3KA of each frame portion 3J and 3K, respectively. Then, the frame-shaped body 2 is installed so that the surface of each frame section 3J, 3K and each panel 5J, 5K faces the fire-resistant covered column 11, which is the object to be protected, and the lower frames of each frame section 3J, 3K of the frame-shaped body 2 are attached to the floor 10, which is the installation surface, thereby forming a protective fence 1 that protects the fire-resistant covered column 11.

[0020] In other words, the protective fence 1 according to Embodiment 3 is configured such that the frame-like body 2 is composed of an L-shaped frame component 3Z in plan view, and the faceplate 5 is composed of faceplates 5J and 5K that are provided to close the lower ends of the openings 3JA and 3KA of the left frame component 3J and the right frame component 3K, respectively.

[0021] Furthermore, similar to the protective fence 1 according to Embodiment 2, an overhang 60 is provided on the rear end side of the lower frame of the left frame 3J so as to be parallel to and opposite to the lower frame of the right frame 3K, and an overhang 60 is provided on the rear end side of the lower frame of the right frame 3K so as to be parallel to and opposite to the lower frame of the left frame 3J. These overhangs 60, 60 and the lower frames of the left frame 3J and right frame 3K are fixed to the floor 10 by fasteners 6 such as anchors to constitute the protective fence 1 according to Embodiment 3. In this configuration, the lower frame of the left frame section 3J and the lower frame of the right frame section 3K are each equipped with an overhanging portion 60, and these overhanging portions 60 are fixed to the floor 10 by fasteners 6. This improves the effect of preventing the left frame section 3J and the right frame section 3K from falling toward the fire-resistant covered column 11.

[0022] The protective fence 1 according to Embodiment 3 provides the same effects as the protective fence 1 according to Embodiments 1 and 2. The protective fence 1 according to Embodiment 3 can prevent, for example, a cargo handling machine from coming into contact with the lower end of a fire-resistant coated column 11, which is installed at an inner corner of a wall W and has fire-resistant coating 11a on two sides of the column that protrudes from the wall W, and damaging the fire-resistant coating 11a. In other words, similar to the protective fence 1 according to Embodiments 1 and 2, for example, the tip 12t of the fork 12a of the forklift 12 comes into contact with the faceplate 5J, 5K, and as a result, a protective fence 1 is provided that can prevent the tip 12t of the fork 12a of the forklift 12 from coming into contact with the lower end of the fire-resistant covering column 11 and damaging the fire-resistant covering 11a.

[0023] Embodiment 4 Although not shown in the figures, the protective fence according to Embodiment 4 is constructed similarly to the protective fences according to Embodiments 1 to 3, comprising a frame-like body formed by one or more rectangular frame sections, and a surface section provided on the frame section to close the lower frame side of the opening in the frame section of the frame-like body. In the protective fence according to Embodiment 4, the frame-like body is composed of a single rectangular frame section, and the face section is composed of a face plate provided to close the lower end side of the opening in the frame section. Then, the frame-like structure is installed so that the frame portion and the surface of the face plate face the fire-resistant covered column, which is the object to be protected, and the lower frame portion of the frame-like structure is attached to the installation surface, thereby forming a protective fence that protects the fire-resistant covered column.

[0024] Furthermore, the left and right ends of the lower frame of the frame-shaped body are provided with overhangs that extend perpendicularly to the lower frame and in the same direction. These overhangs and the lower frame of the frame are fixed to the floor with fasteners such as anchors to constitute the protective fence according to Embodiment 4. In this configuration, the lower frame of the frame section is equipped with protruding sections on both the left and right ends, and these protruding sections are fixed to the floor with fasteners, thereby improving the effectiveness of preventing the protective fence from falling towards the fire-resistant covered posts.

[0025] The protective fence according to Embodiment 4 provides the same effects as the protective fence 1 according to Embodiments 1 to 3. The protective fence according to Embodiment 4 can accommodate situations such as when it is desired to individually protect the sides of a fire-resistant coated column, which is the object to be protected.

[0026] In addition to the fire-resistant coated column 11, the object to be protected may also be, for example, a column, a wall, etc. Furthermore, the cargo handling machine may be a machine other than a forklift 12. Furthermore, the installation surface may be any surface other than the warehouse floor 10. [Explanation of Symbols]

[0027] 1 Protective fence, 2 Frame-shaped body, 3A~3K frame, 3AA~3KA opening, 3X frame-shaped rectangular parallelepiped, 5 sides, 5A~5K face plates, 10 floors (installation surfaces), 11. Fire-resistant coated columns (objects to be protected).

Claims

1. A protective fence for protecting an object to be protected, installed on the mounting surface, A frame-like body formed by one or more rectangular frame sections, A surface portion provided on the frame portion of the frame-shaped body so as to close the lower frame side of the opening in the frame portion, A protective fence characterized by having the following features.

2. The frame-like structure is composed of a rectangular parallelepiped with six square frame sections. The face portion is composed of face plates provided to close the lower end of each opening in the side frame portion that constitutes the four sides of the frame-shaped rectangular parallelepiped. The protective fence according to claim 1, characterized in that each side frame portion of the frame-shaped rectangular parallelepiped surrounds the periphery of the object to be protected, the frame-shaped rectangular parallelepiped is installed such that the surface of each face panel faces the object to be protected, and the lower frame portion of the frame-shaped rectangular parallelepiped is attached to the installation surface.

3. The frame-like body is composed of a front frame section, a left frame section provided to the left of the front frame section, and a right frame section provided to the right of the front frame section. The face section is composed of face plates provided to close the lower end of each frame section's opening. The protective fence according to claim 1, characterized in that the frame-like structure is installed such that each frame portion and each panel surface of the frame-like structure face the object to be protected, and the lower frame of each frame portion of the frame-like structure is attached to the installation surface.

4. The frame-like body is composed of left and right frame sections, The face section is composed of face plates provided to close the lower end of each frame section's opening. The protective fence according to claim 1, characterized in that the frame-like structure is installed such that each frame portion and each panel surface of the frame-like structure face the object to be protected, and the lower frame of each frame portion of the frame-like structure is attached to the installation surface.

5. The frame-like structure is composed of a single rectangular frame section. The face portion is composed of a face plate provided to close the lower end of the opening in the frame portion. The protective fence according to claim 1, characterized in that the frame-like body is installed such that the frame portion of the frame-like body and the surface of the face panel face the object to be protected, and the lower frame of the frame portion of the frame-like body is attached to the installation surface.

Images