Equipment support bracket

Abstract

To provide a lightweight and stronger equipment support bracket. [Solution] The equipment support bracket for supporting equipment M on a structure S comprises a base member 2 fixed to the structure S and a bracket main body 3 fixed to the base member 2 and extending out to the side, and the material of the base member 2 is a stronger material than the material of the bracket main body 3.

Description

[Technical Field]

[0001] The present invention relates to a facility support bracket for supporting an inspection path provided on various structures such as bridges. [Background technology]

[0002] Generally, in structures such as bridges, viaducts, and tunnels for roads and railways, equipment (inspection tracks) for workers is provided for inspection, repair, and various other tasks. This equipment is sometimes supported by being hung across equipment support brackets that cantilever laterally from bridge girders, bridge piers, the inner walls of tunnels, etc. (for example, Patent Documents 1 and 2).

[0003] The scaffolding bracket of Patent Document 1 comprises a base member that is fixed to a structure and extends laterally, and a bracket body that is fixed to the top surface of the base member and extends laterally so that equipment can be placed on the top surface. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Patent No. 3188247 [Patent Document 2] Patent No. 6393143 Summary of the Invention [Problem to be solved by the invention]

[0005] All of the components of the equipment support bracket in Patent Document 1 are made of metal. Furthermore, the use of metal components for equipment support brackets is common practice, not limited to Patent Document 1. Metal brackets are often treated with hot-dip galvanizing or anti-rust coating, but the effects of rainwater and salt damage cannot be completely eliminated, and corrosion may progress over long periods of use. Furthermore, because the components are made of metal and are heavy, there is a problem in that a great deal of effort is required to transport and assemble the components on-site.

[0006] Patent Document 2 discloses a resin bracket, which solves the problems of corrosion and weight associated with metal brackets. However, if all components constituting the equipment support bracket are made of resin, the strength is inferior to that of metal brackets, resulting in a problem of a reduced allowable load. For this reason, there is a demand for a lightweight, stronger equipment support bracket.

[0007] Therefore, the present invention aims to provide a lightweight and strong equipment support bracket. [Means for solving the problem]

[0008] In order to solve the above problems, the present invention employs an equipment support bracket having the following configuration. [Configuration 1] In an equipment support bracket for supporting equipment on a structure, a base member fixed to the structure; a bracket body fixed to the base member and extending laterally, The material of the base member is stronger than the material of the bracket body.

[0009] [Configuration 2] the base member has a fixed portion that is fixed to the structure and a protruding portion that protrudes laterally from the fixed portion; The equipment support bracket according to configuration 1, wherein the bracket body is fixed to the upper surface of the protruding portion and further protrudes laterally from the protruding portion so that the equipment can be placed on the upper surface.

[0010] [Configuration 3] the base member is made of metal, 3. The equipment support bracket according to claim 1, wherein the bracket body is made of resin.

[0011] [Configuration 4] a reinforcing member attached to the bracket body and abutting against an upper surface of the bracket body; The equipment support bracket according to configuration 2 or 3, wherein the bracket body is fixed to the protruding portion by inserting a bolt through the protruding portion, the bracket body, and the reinforcing member.

[0012] [Configuration 5] 5. The equipment support bracket according to any one of configurations 2 to 4, wherein a rubber material is sandwiched between the protruding portion and the bracket body.

[0013] [Configuration 6] 6. The equipment support bracket according to any one of configurations 1 to 5, wherein the bracket body has a hollow cross-sectional shape.

[0014] [Configuration 7] The equipment support bracket according to any one of configurations 2 to 6, wherein a rib extending downward is formed on the underside of the protruding portion. [Effects of the Invention]

[0015] Generally, the stronger the material, the heavier it becomes. However, with this equipment support bracket, only the base member, which is subjected to the greatest moment force, is made of a high-strength material, and the material for the bracket body is made of a lighter material with lower strength. As a result, the weight of the entire equipment support bracket is light, and assembly is easy. [Brief explanation of the drawings]

[0016] [Figure 1] FIG. 1 is a perspective view showing an equipment support bracket according to an embodiment; [Figure 2] Partial cross-sectional view of Figure 1 seen from the front [Figure 3] Right side view of the equipment support bracket in Figure 2 [Figure 4] FIG. 2 is a perspective view showing the equipment support bracket of FIG. 1 in a state before assembly; [Figure 5] FIG. 2 is a perspective view of the equipment support bracket of FIG. 1; [Figure 6] FIG. 6 is a perspective view showing the equipment being placed on the equipment support bracket of FIG. 5; [Figure 7]FIG. 3 is a front view showing a modified example of the base member of FIG. 2; [Figure 8] Right side view of Figure 7 [Figure 9] FIG. 3 is a front view showing a modified example of the base member of FIG. 2; [Figure 10] Right side view of Figure 9 [Figure 11] FIG. 3 is a front view showing a modified example of the base member of FIG. 2; [Figure 12] Right side view of Figure 11 [Figure 13] FIG. 3 is a front view showing a modified example of the base member of FIG. 2; [Figure 14] Right side view of Figure 13 [Figure 15] FIG. 3 is a perspective view showing a modified example in which the reinforcing member of FIG. 2 is abutted against the fixing portion of the base member with a rubber material sandwiched therebetween. [Figure 16] Front view of Figure 15 [Figure 17] FIG. 3 is a perspective view showing a modified example of the reinforcing member of FIG. 2; [Figure 18] Front view of Figure 17 [Figure 19] FIG. 3 is a perspective view showing a modified example of the equipment support bracket of FIG. 2. [Figure 20] Partial cross-sectional view of Figure 19 seen from the front [Figure 21] FIG. 3 is a front view showing a modified example of the base member of FIG. 2; [Figure 22] Right side view of Figure 21 [Figure 23] FIG. 3 is a front view showing a modified example of the base member of FIG. 2; [Figure 24] Right side view of Figure 23 DETAILED DESCRIPTION OF THE INVENTION

[0017] An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a plurality of equipment support brackets 1 of this embodiment are installed on various structures S such as bridges and tunnels to support equipment M laid along the structure S from below at predetermined intervals. In this embodiment, a case will be described in which the equipment M is attached to a bridge girder. The equipment M is a longitudinal walkway girder that forms a walkway (inspection path) for various tasks on which workers can walk. The equipment M has a hollow box girder shape and is made of fiber-reinforced plastic (FRP).

[0018] As shown in Figures 2 and 3, the equipment support bracket 1 comprises a base member 2 fixed to the structure S, a bracket body 3 attached to the base member 2 and extending out to the side, a rubber member 4 sandwiched between the base member 2 and the bracket body 3, and a reinforcing member 5 that reinforces the bracket body 3. The structure S is assumed to be a web connecting the upper and lower flanges of a steel I-girder or steel box girder.

[0019] The base member 2 has a fixing portion 10 fixed to the structure S, a protruding portion 11 protruding laterally (to the right in FIG. 2 ) from the fixing portion 10, and a rib portion 12 extending downward from the protruding portion 11. The base member 2 is made of a material with higher strength than the material of the bracket body 3. In this embodiment, the base member 2 is made of metal (specifically, SUS304). High strength here means that the material has relatively high shear strength, meaning that the material is less susceptible to shear fracture due to the load of equipment M or the like. The fixing portion 10 is a flat plate formed in a rectangular shape (see FIG. 3 ). The surface of the fixing portion 10 faces the vertical direction. As shown in FIG. 2 , the fixing portion 10 has multiple bolt holes 13 formed therein for fixing to the structure S. In this embodiment, six bolt holes 13 are formed therein, three of which are arranged horizontally in a row near the upper end of the fixing portion 10, and the remaining three are arranged horizontally in a row near the lower end of the fixing portion 10. Bolt holes 14 are formed in the structure S at positions corresponding to the bolt holes 13. The fixing part 10 is fixed to the structure S via the bolt holes 13, 14 with bolts and nuts.

[0020] As shown in Fig. 4, the overhanging portion 11 is a flat plate formed in a rectangular shape. The surface direction of the overhanging portion 11 is perpendicular to the surface direction of the fixing portion 10. The overhanging portion 11 is fixed to the fixing portion 10. For example, the overhanging portion 11 is fixed to the fixing portion 10 by a method such as welding or bolting. The overhanging portion 11 has a plurality of bolt holes 15 for fixing the bracket main body 3. In the embodiment, the bolt holes 15 are formed side by side, two on each side, in the overhanging direction of the overhanging portion 11 on both sides of the rib portion 12.

[0021] As shown in FIG. 2, the rib portion 12 is a flat plate formed in a rectangular shape, with the surface of the plate facing in the vertical direction. The rib portion 12 extends downward from the underside of the overhanging portion 11. The rib portion 12 also extends from the fixed portion 10 in the direction in which the overhanging portion 11 overhangs (toward the right in FIG. 2). The rib portion 12 is provided in two locations parallel to each other in the width direction of the overhanging portion 11. The rib portion 12 has a scallop 16 (notch) formed at the end surrounded by the fixed portion 10 and the overhanging portion 11 (the end on the upper left side in FIG. 2). The overhanging portion 11 is reinforced by the rib portion 12.

[0022] As shown in Figures 2 and 3, the bracket body 3 comprises a band-shaped top plate 20 having a horizontal surface direction, a band-shaped bottom plate 21 arranged parallel to the top plate 20, and a pair of band-shaped webs 22 connecting the top plate 20 and the bottom plate 21. The bracket body 3 protrudes laterally (to the right in Figure 2) from the fixing portion 10. The bracket body 3 is formed with a hollow cross-sectional shape. The bracket body 3 is made of resin. In this embodiment, the bracket body 3 is made of fiber-reinforced resin (FRP). The bracket body 3 is formed by pultrusion molding. The cross-sectional shape of the bracket body 3 perpendicular to the longitudinal direction is constant throughout the entire longitudinal length, and the bracket body 3 has a large number of continuous fibers in the longitudinal direction. Therefore, it is lightweight and has excellent shear strength. The top plate 20 is disposed above the bottom plate 21. The top plate 20 is formed so that equipment M can be placed on and fixed on its upper surface. The pair of webs 22 are arranged so that the plane direction of the plate surfaces thereof faces the vertical direction. The bracket body 3 is lightweight because of its hollow cross-sectional shape.

[0023] As shown in Fig. 4, bolt holes 23 are formed in bottom plate 21 at positions corresponding to bolt holes 15. Bottom plate 21 is fixed to the upper surface of overhanging portion 11 by fastening nuts to bolts through bolt holes 15 on the opposite side of structure S from those aligned in the overhanging direction of overhanging portion 11 and corresponding bolt holes 23. Bracket main body 3 is configured to further overhang laterally from overhanging portion 11.

[0024] As shown in Figures 2 and 3, the reinforcing member 5 is formed with an L-shaped cross section, with two plate members 5a, 5b connected at a right angle. One plate member 5a abuts the upper surface of the top plate 20, and the other plate member 5b rises upward from the end of the one plate member 5a that is closer to the structure S. The reinforcing member 5 extends in the width direction of the top plate 20 (left and right direction in Figure 3). The reinforcing member 5 has a length equal to the width of the top plate 20, and is arranged so as to span the entire width of the top plate 20.

[0025] As shown in FIG. 4 , bolt holes 24 and 25 are formed in top plate 20 and one plate 5a of reinforcing member 5, respectively, corresponding to the positions of bolt holes 15 aligned in the extension direction of overhanging portion 11 that are closer to structure S. Top plate 20 and reinforcing member 5 are fixed to overhanging portion 11 by inserting bolts through bolt holes 15, 23, 24, and 25 and fastening nuts. In this manner, bracket body 3 is fixed not only by fixing bottom plate 21 to base member 2, but also by fixing top plate 20 to base member 2 via bolts, so that moment force acting on bottom plate 21 can be distributed between top plate 20 and bottom plate 21. Furthermore, in this case, moment force is likely to be applied to the fixed portion of top plate 20, but by attaching reinforcing member 5, the load-bearing capacity of top plate 20 can be increased.

[0026] The rubber material 4 is formed so as to cover the entire upper surface of the overhanging portion 11. Bolt holes 26 corresponding to the positions of the bolt holes 15 of the overhanging portion 11 are formed in the rubber material 4, and bolts are inserted into the bolt holes 26. By sandwiching the rubber material 4 between the overhanging portion 11 and the bracket main body 3, the resin surface of the bracket main body 3 can be protected.

[0027] This equipment support bracket 1 is assembled as follows.

[0028] As shown in Figures 4 and 5, first, the fixing portion 10 is fixed to the structure S with bolts and nuts through bolt holes 13 and 14 (see Figure 2). Next, rubber material 4 is placed on the upper surface of the protruding portion 11, and the bracket main body 3 is placed on the upper surface of the rubber material 4. In this state, the rubber material 4 and the bracket main body 3 are fixed to the base member 2 with bolts and nuts through bolt holes 15, 26, and 23. Next, the reinforcing member 5 is placed on the upper surface of the bracket main body 3. In this state, the reinforcing member 5 is fixed to the bracket main body 3 with bolts and nuts through bolt holes 15, 26, 23, 24, and 25. This completes the assembly of the equipment support bracket 1. Thereafter, as shown in Figure 6, equipment M can be placed on the assembled equipment support bracket 1 and fixed with bolts, nuts, etc.

[0029] Generally, the higher the strength of a material, the heavier it becomes. However, in this embodiment, only the base member 2, which is subjected to the greatest moment force, is made of a high-strength material, and the bracket body 3 is made of a lighter material with a lower strength, so the weight of the entire equipment support bracket 1 is light and assembly is easy. Specifically, because the bracket body 3 is made of resin, the weight of the entire equipment support bracket 1 is light. On the other hand, because the base member 2, which is subjected to the greatest moment force when a load is applied to the equipment M, is made of metal, a large load-bearing capacity can be ensured.

[0030] Here, the cross-sectional shape of the bracket body 3 may be H-shaped, I-shaped, L-shaped, round, groove-shaped, or the like.

[0031] The rib portions 12 of the base member 2 may have other shapes as long as they reinforce the protruding portion 11. For example, as shown in FIGS. 7 and 8, they may be formed to have a triangular shape when viewed from the front in FIG. 7. As shown in FIGS. 9 and 10, they may be formed to have a trapezoidal shape when viewed from the front in FIG. 9. As shown in FIGS. 11 and 12, the lower ends of two rib portions 12 extending in the vertical direction may be connected to each other. Connecting the lower ends of the rib portions 12 can increase strength. As shown in FIGS. 13 and 14, the rib portions 12 may be formed in one location at the center of the width direction of the protruding portion 11 (the left-right direction in FIG. 14) rather than being formed in two locations parallel to each other.

[0032] 15 and 16, the plate material 5b of the reinforcing member 5 may be configured to abut against the fixing portion 10 with a rubber material 27 sandwiched therebetween. In this way, the moment force can be released from the reinforcing member 5 to the fixing portion 10, and the strength of the bracket main body 3 can be increased.

[0033] The reinforcing member 5 may have a cross section other than an L-shape. For example, as shown in Figures 17 and 18, it may be formed in a groove shape. In this case, the groove is arranged so that it opens upward. One of the opposing raised portions of the groove is attached to the fixing part 10 with a rubber material 27 sandwiched therebetween.

[0034] 19 and 20, the base member 2 can be flat and a flange portion 30 can be formed at the end of the bracket main body 3. Here, a female thread is formed in the base member 2 and an insertion hole is formed in the flange portion 30. The bracket main body 3 is fixed to the base member 2 by inserting a stud bolt into the flange portion 30 and screwing it into the female thread of the base member 2, and then screwing and tightening a nut. However, instead of forming a female thread, all the holes can be made through, and a bolt can be inserted and fastened with a nut.

[0035] 21 and 22, the end of the base member 2 can also be fixed to the structure S by welding. In the embodiment, fillet welding is used, but other welding methods may be used. In this case, the fixed portion 10 is formed by the welded portion.

[0036] 23 and 24, the fixing portion 10 may be configured by a connection plate (hereinafter referred to as the connection plate 10) that connects the rib portion 12 and the structure S. The connection plate 10 is flat and is fixed to the structure S by welding. The connection plate 10 fastens the side surfaces of the rib portion 12 with bolts and nuts.

[0037] Furthermore, although the configuration of this invention has been described using a longitudinal walkway girder as an example of the equipment M, the equipment M is not limited to this embodiment. For example, it can also be used to support various long equipment M, such as pipes through which various fluids are supplied. Furthermore, in addition to long equipment M, this invention can also be used to support various types of equipment M, such as distribution boards, meter boxes, operating devices, and other devices.

[0038] The embodiments disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0039] 2 Base material 3 Bracket body 4. Rubber material 5 Reinforcing members 10 Fixed part 11 Overhang 12 Rib section M Equipment S structure

Claims

1. An equipment support bracket for supporting equipment (M) on a structure (S), a base member (2) having a fixed portion (10) fixed to the structure (S) and a protruding portion (11) protruding laterally from the fixed portion (10); a bracket body (3) fixed to the upper surface of the protruding portion (11) and further protruding laterally from the protruding portion (11) so that the equipment (M) can be placed on the upper surface; The material of the base member (2) is a material with higher strength than the material of the bracket body (3), A reinforcing member (5) is attached to the bracket body (3) and abuts against the upper surface of the bracket body (3), The bracket body (3) is an equipment support bracket fixed to the protrusion (11) by inserting bolts through the protrusion (11), the bracket body (3), and the reinforcing member (5).

2. An equipment support bracket for supporting equipment (M) on a structure (S), a base member (2) having a fixed portion (10) fixed to the structure (S) and a protruding portion (11) protruding laterally from the fixed portion (10); a bracket body (3) fixed to the upper surface of the protruding portion (11) and further protruding laterally from the protruding portion (11) so that the equipment (M) can be placed on the upper surface; The material of the base member (2) is a material with higher strength than the material of the bracket body (3), The base member (2) is made of metal, The bracket body (3) is made of FRP, and has a cross-sectional shape perpendicular to the longitudinal direction that is constant over the entire longitudinal length, and has a large number of continuous fibers in the longitudinal direction.

3. 3. The equipment support bracket according to claim 1, wherein a rubber material (4) is sandwiched between the protruding portion (11) and the bracket body (3).

4. 3. The equipment support bracket according to claim 1, wherein the bracket body (3) has a hollow cross-sectional shape.

5. 3. The equipment support bracket according to claim 1, wherein a rib portion (12) extending downward is formed on the underside of the protruding portion (11).

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