Groove type bridge

Abstract

The utility model discloses a groove type bridge which comprises a plurality of bridge unit bodies, every two adjacent bridge unit bodies are connected through a bolt assembly, each bridge unit body comprises a U-shaped bridge body, one side of each bridge body is rotatably connected with a cover plate through a hinge, the other side of each bridge body is provided with a clamping groove, and the clamping grooves are connected with the bridge unit bodies through bolts. The cover plate can be overturned and buckled on the opening of the bridge main body and is clamped and fixed with the clamping groove, the two sides of one end of the bridge main body extend outwards to be provided with integrated connecting pieces, the integrated connecting pieces are provided with first connecting holes, and the two sides of the other end of the bridge main body are provided with second connecting holes. Compared with a traditional groove-type bridge, the groove-type bridge does not have the problems of less carrying or loss of connecting sheets and falling of a cover plate, does not need to install a grounding jumper wire, saves time and labor, is high in installation efficiency, and is suitable for being used horizontally and vertically.

Description

Technical Field

[0001] The utility model relates to a trough type bridge frame, belonging to the technical field of bridge frames. Background Art

[0002] At present, the need to use trough-type bridges to arrange cables in construction projects is increasing day by day. Figure 1 and Figure 2 As shown, it includes a plurality of unit bodies and a flat U-shaped cover plate 72. Each unit body includes a U-shaped bridge frame body 71. The side walls at both ends of the bridge frame body 71 are usually provided with a plurality of connection holes 711 and at least one grounding hole 712. The open edge of the bridge frame body 71 is usually provided with an inner flange 710 facing inward. During actual installation, two adjacent bridge frame bodies 71 are connected by a connecting piece 73. Specifically, as Figure 1 , the opposite ends of the two bridge main bodies 71 are abutted together and a connecting piece 73 is arranged on each side of the abutting part. The connecting piece 73 is fixed to the bridge main body 71 by passing through the holes on its upper surface and the fixing bolts 74 of the connecting holes 711 and cooperating with the fixing nuts (not shown in the figure), thereby realizing the connection between the two bridge main bodies 71. When the adjacent bridge main bodies 71 are connected, the cover plate 72 is fixed on the opening of the bridge main body 71 by passing through the holes on the cover plate 72 and the buckle holes 713 on the inner flange 710 through the cover buckle 76. When in use, the current is safely led to the ground by pulling the ground jumper wire 75 between the two grounding holes 712 of the two adjacent bridge main bodies 71. From the actual implementation, it can be found that the above-mentioned traditional trough type bridge has the following disadvantages: 1. The connecting piece 73 is an independent component, and it is often missing or lost during installation, which affects the installation progress. 2. The cover plate 72 is an independent component separated from the bridge body 71. It is easy to fall off when installed by the cover buckle 76, especially when the trough bridge is used upright. 3. The whole installation process is time-consuming and labor-intensive, and the installation efficiency is not high. Utility Model Content

[0003] The purpose of the utility model is to provide a trough type bridge, which, compared with the traditional trough type bridge, does not have the problem of missing or lost connecting pieces, does not have the problem of cover plates falling off, does not need to install grounding jumper wires, saves time and labor, has high installation efficiency, and is suitable for horizontal and upright use.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A trough-type bridge frame comprises a plurality of bridge frame unit bodies, and two adjacent bridge frame unit bodies are connected by a bolt assembly. The bridge frame unit body comprises a U-shaped bridge frame body, one side of the bridge frame body is rotatably connected to a cover plate via a hinge, and a card slot is provided on the other side of the bridge frame body. The cover plate can be flipped and buckled on the opening of the bridge frame body and fixed with the card slot. An integral connecting piece is extended outward on both sides of one end of the bridge frame body, and a first connecting hole is provided on the integral connecting piece, and a second connecting hole is provided on both sides of the other end of the bridge frame body.

[0006] The advantages of the utility model are:

[0007] The utility model has reasonable structural design and is easy to install, simplifies the installation process and improves the installation speed. Compared with the traditional trough type bridge, there is no problem of missing or losing connecting pieces, no problem of cover plates falling off, no need to install grounding jumper wires, and reduces the installation cost. In addition to being suitable for horizontal use, it is also suitable for upright use. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a schematic diagram of the unit connection of the traditional trough type bridge.

[0009] Figure 2 This is a schematic diagram of the cover fixing of the traditional trough type bridge.

[0010] Figure 3 The utility model is a structural schematic diagram of a bridge unit of a trough-type bridge when the cover plate is closed.

[0011] Figure 4 yes Figure 3 Schematic diagram of the left side.

[0012] Figure 5 yes Figure 3 Schematic diagram of the right side.

[0013] Figure 6 yes Figure 3 Schematic diagram of the CC section.

[0014] Figure 7 yes Figure 3 An enlarged schematic diagram of part A in FIG.

[0015] Figure 8 yes Figure 4 An enlarged schematic diagram of part B in FIG.

[0016] Fig. 9 The utility model is a structural schematic diagram of a bridge unit body of a trough type bridge when the cover plate is opened.

[0017] Fig.10 yes Fig. 9 DD section schematic diagram. DETAILED DESCRIPTION

[0018] like Figures 3 to 10 As shown, the utility model provides a trough-type bridge, which includes a plurality of bridge unit bodies 10, and two adjacent bridge unit bodies 10 are connected by a bolt assembly. The bridge unit body 10 includes a U-shaped bridge body 11, and one side of the bridge body 11 is rotatably connected to a cover plate 14 via a hinge 12, and a card slot 13 is provided on the other side of the bridge body 11. The cover plate 14 can be flipped and buckled on the open mouth of the bridge body 11 and fixed with the card slot 13, so that the entire bridge unit body 10 forms a cavity for arranging cables, and an integrated connecting piece 20 is extended outward on both sides of one end of the bridge body 11, and a first connecting hole 21 is provided on the integrated connecting piece 20, and a second connecting hole 41 is provided on both sides of the other end of the bridge body 11 near the port, and the first connecting hole 21 and the second connecting hole 41 are designed to cooperate with the bolt assembly to fix the connection between two adjacent bridge bodies 11.

[0019] In the present invention, the bridge frame body 11 is processed from a whole plate into a U-shaped groove structure. The bridge frame body 11 is composed of a bottom plate 111 and a first side plate 112 and a second side plate 113 arranged on both sides of the bottom plate 111. The first side plate 112 and the second side plate 113 have the same size. Usually, the tops of the first side plate 112 and the second side plate 113 are both provided with inner flanges 114 facing inward. The cover plate 14 is composed of a cover plate body 140 and a snap-fit ​​flange 141 and a connecting flange 142 arranged on both sides of the cover plate body 140 to form a flat U shape, wherein: a hinge 12 is installed on the upper part of the outer wall of the first side plate 112, a card slot 13 adapted to the snap-fit ​​flange 141 is installed on the upper part of the outer wall of the second side plate 113, the connecting flange 142 is connected to the hinge 12, and the snap-fit ​​flange 141 is used for the cover plate 14 to be snapped into the card slot 13 when it is flipped and buckled on the opening of the bridge frame body 11 to realize the snap connection between the cover plate 14 and the bridge frame body 11.

[0020] like Figure 3 , along the length direction of the bridge body 11, the bridge body 11 is provided with a plurality of hinges 12 and a plurality of slots 13 at intervals. The number of hinges 12 and the number of slots 13 can be the same or different. Preferably, the hinges 12 and the slots 13 can be arranged in pairs on both sides of the bridge body 11.

[0021] In the present invention, the hinge 12 can be a common flat hinge in the art, and of course, a parent-child hinge can also be used. Usually, the hinge 12 is composed of two hinge pieces and a connecting shaft rotatably connected to the two hinge pieces, and its structure is not described in detail here. One hinge piece is used to be fixed on one side of the bridge body 11, and the other hinge piece is used to be connected to the connecting flange 142 of the cover plate 14.

[0022] In actual design, the integrated connecting piece 20 is integrally formed with the bridge frame body 11, that is, made of the same plate. This integrated design effectively ensures that two adjacent bridge frame units 10 can be effectively connected by bolt assemblies. Compared with the connecting piece of the traditional trough bridge frame, the connection reliability is high, so that the connecting piece can be omitted.

[0023] In the present invention, the bolt assembly includes a bolt and a nut (not shown in the figures).

[0024] In actual design, the bridge frame body 11 and the cover plate 14 of the bridge frame unit body 10 can be made of metal plates (preferably steel) with galvanized surfaces, wherein: the integrated connecting piece 20 is not provided with grounding holes (first grounding hole 22, second grounding hole 42); the two integrated connecting pieces 20 at one end of the bridge frame body 11 are inserted into the two sides of the adjacent bridge frame body 11 and fixedly connected with the adjacent bridge frame body 11 by means of a bolt assembly, that is, the bolts pass through the second connecting hole 41 and the corresponding first connecting hole 21 and are then locked and fixed by nuts.

[0025] In actual design, the bridge frame body 11 and the cover plate 14 of the bridge frame unit body 10 can also be made of metal plates with fire-proof spray-coated surfaces, wherein: at least one integrated connecting piece 20 is provided with a first grounding hole 22; a second grounding hole 42 is provided next to the second connecting hole 41 on the same side of the bridge frame body 11 as the first grounding hole 22; the arrangement of the first grounding hole 22 and the first connecting hole 21 on the same side of the bridge frame body 11 is consistent with the arrangement of the second grounding hole 42 and the second connecting hole 41 (index quantity, front and back order, spacing size, etc.); the two integrated connecting pieces 20 at one end of the bridge frame body 11 are inserted into After being inserted into both sides of the adjacent bridge frame body 11, they are fixedly connected with the adjacent bridge frame body 11 by means of bolt assemblies, that is, the bolts are passed through the second connecting hole 41 and the corresponding first connecting hole 21 and then locked and fixed by nuts, wherein the outer periphery of the first grounding hole 22 and the second grounding hole 42 is not subjected to fireproof spraying treatment, and a metal gasket (not shown in the figure) for ensuring grounding conductivity is added between the first grounding hole 22 of the integral connecting piece 20 and the second grounding hole 42 of the adjacent bridge frame body 11, that is, the bolts are passed through the second grounding hole 42, the metal gasket and the first grounding hole 22 and then locked and fixed by nuts.

[0026] In the present invention, the number of first connection holes 21 is usually multiple, and the number of second connection holes 41 is consistent with the first connection holes 21. Similarly, the number of first grounding holes 22 is not limited, and is at least one, and the number of second grounding holes 42 is consistent with the first grounding holes 22.

[0027] In actual design, it is better to design the first connecting hole 21 and the second connecting hole 41 as oblong holes. The length direction of the oblong holes is usually set along the length direction of the bridge frame body 11, but it is certainly not limited. In addition, the first grounding hole 22 and the second grounding hole 42 can be designed as round holes.

[0028] like Figures 3 to 5 , the figure shows a situation where an integrated connecting piece 20 on one end of the bridge main body 11 of the bridge unit body 10 is provided with a first connecting hole 21 and a first grounding hole 22, and another integrated connecting piece 20 is only provided with the first connecting hole 21 without the first grounding hole 22. Correspondingly, one side of the other end of the bridge main body 11 is provided with a second connecting hole 41 and a second grounding hole 42, and the other side is only provided with the second connecting hole 41 without the second grounding hole 42. Figure 4 and Figure 5 Based on this design, one integral connecting piece 20 can be slightly longer than another integral connecting piece 20. Figure 4 and Figure 5 From the perspective of the embodiment, the height h of the integrated connecting piece 20 is smaller than the height H of the first side plate 112 or the second side plate 113 of the bridge frame body 11 , so that the integrated connecting piece 20 can be smoothly inserted into both sides of the bridge frame body 11 without affecting the closing of the cover plate 14 .

[0029] like Figure 3 Preferably, an elastic expansion joint 60 is provided in the middle of the bridge frame body 11 , and the elastic expansion joint 60 is formed by folding the bridge frame body 11 .

[0030] In actual design, the elastic expansion joint 60 can be designed such that the portion 62 of the elastic expansion joint 60 at the bottom of the bridge frame body 11 (ie, the bottom plate 111) protrudes outward in a V shape (eg, Figure 8 ), the elastic expansion joint 60 is located on both sides of the bridge frame body 11 (i.e., the first side plate 112 and the second side plate 113) and the part 61 thereof protrudes inwardly in a V shape (such as Figure 7 The size of the V-shaped structure of the elastic expansion joint 60 should be determined according to the thermal expansion and contraction coefficient of the entire bridge body 11 and the structural deformation (settlement or thermal expansion and contraction) coefficient.

[0031] In actual design, the elastic expansion joint 60 can also be designed such that the part of the elastic expansion joint 60 at the bottom of the bridge frame body 11 (i.e., the bottom plate 111) protrudes outward in a wave shape, and the part of the elastic expansion joint 60 at both sides of the bridge frame body 11 (i.e., the first side plate 112 and the second side plate 113) protrudes inward in a wave shape. This wave-like structure increases the expansion space and expansion elasticity by increasing the number of V-shaped folds. The number of V-shaped folds of the entire wave-like structure should be determined according to the thermal expansion and contraction coefficient of the entire bridge frame body 11 and the structural deformation (settlement or thermal expansion and contraction) coefficient.

[0032] When the utility model is installed horizontally, it is not necessary to set an elastic expansion joint 60 on each bridge unit body 10. The design of the elastic expansion joint 60 only needs to meet the length compensation requirements of the trough bridge of the utility model caused by thermal expansion and contraction or structural disturbance. When the utility model is installed vertically, it is recommended to set an elastic expansion joint 60 on each bridge unit body 10 due to the problem of fixing method.

[0033] Take the bridge unit body 10 with fireproof spray-coated surface as an example. During installation, the two integrated connecting pieces 20 of the bridge unit body 10 are inserted into the two sides of the adjacent bridge unit body 10, and the opposite ends of the two bridge unit bodies 10 are pressed against each other. Then, the connection between the two adjacent bridge unit bodies 10 is realized by installing the bolt assembly in the corresponding second connecting hole 41 and the first connecting hole 21. At the same time, the grounding conduction between the two adjacent bridge unit bodies 10 is realized by installing the bolt assembly in the corresponding second grounding hole 42, the additional metal gasket and the first grounding hole 22. When the adjacent bridge unit bodies 10 are connected, flip the cover plate 14 so that its engaging flange 141 is stuck in the card slot 13, so that the cover plate 14 is buckled on the opening of the bridge body 11, and the entire bridge unit body 10 forms a cavity for arranging cables, and the installation is completed.

[0034] As can be seen from the above, the design of the utility model eliminates the problem of the cover plate 14 falling off, eliminates the need for a ground jumper wire, and is particularly suitable for arranging cables in a vertical arrangement in addition to being horizontally arranged.

[0035] The utility model has the following beneficial effects:

[0036] 1. The utility model has reasonable structural design and convenient installation, simplifies the installation process and improves the installation speed. Compared with the traditional trough type bridge, there is no problem of missing or losing the connecting piece, no problem of cover falling off, no need to install the grounding jumper wire, and reduces the installation cost. In addition to being suitable for horizontal use, it is also suitable for upright use.

[0037] 2. The utility model adds an elastic expansion joint to the bridge unit body to meet the length compensation requirements caused by thermal expansion and contraction or structural disturbance, and the elastic expansion joint and the bridge body are an integrated structure, which simplifies the installation process and avoids the problem of loss.

[0038] The above are preferred embodiments of the present invention and the technical principles used therein. For those skilled in the art, without departing from the spirit and scope of the present invention, any obvious changes such as equivalent transformation, simple replacement, etc. based on the technical solution of the present invention are within the protection scope of the present invention.

Claims

1. A trough type bridge, characterized in that: It comprises a plurality of bridge frame units, and two adjacent bridge frame units are connected by a bolt assembly, and the bridge frame unit comprises a U-shaped bridge frame body, one side of the bridge frame body is rotatably connected to a cover plate via a hinge, and a card slot is provided on the other side of the bridge frame body, and the cover plate can be flipped and buckled on the opening of the bridge frame body and fixed with the card slot, and both sides of one end of the bridge frame body are extended outwardly with an integrated connecting piece, and a first connecting hole is provided on the integrated connecting piece, and second connecting holes are provided on both sides of the other end of the bridge frame body.

2. The trough type bridge according to claim 1, characterized in that: The bridge frame body is composed of a base plate and a first side plate and a second side plate arranged on both sides of the base plate, and the cover plate is composed of a cover plate body and a snap-fit ​​flange and a connecting flange arranged on both sides of the cover plate body, wherein: the hinge is installed on the upper part of the outer wall of the first side plate, the slot is installed on the upper part of the outer wall of the second side plate, the connecting flange is connected to the hinge, and the snap-fit ​​flange is used for the cover plate to be snapped into the slot when the cover plate is flipped and buckled on the opening of the bridge frame body to realize the snap connection between the cover plate and the bridge frame body.

3. The trough type bridge according to claim 1, characterized in that: Viewed along the length direction of the bridge frame body, a plurality of hinges and a plurality of slots are arranged at intervals on the bridge frame body.

4. The trough type bridge according to claim 1, characterized in that: The integrated connecting piece is integrally formed with the bridge frame body.

5. The trough type bridge according to claim 4, characterized in that: The bridge frame unit body is made of a metal plate with a galvanized surface, wherein: the integrated connecting piece is not provided with a grounding hole; the two integrated connecting pieces at one end of the bridge frame body are inserted and placed on both sides of the adjacent bridge frame body and fixedly connected with the adjacent bridge frame body by the bolt assembly.

6. The trough type bridge according to claim 4, characterized in that: The bridge frame unit body is made of a metal plate with a fire-proof spray-coated surface, wherein: at least one of the integrated connecting pieces is provided with a first grounding hole; a second grounding hole is provided next to the second connecting hole on the same side of the bridge frame body as the first grounding hole; the arrangement of the first grounding hole and the first connecting hole on the same side of the bridge frame body is consistent with the arrangement of the second grounding hole and the second connecting hole; the two integrated connecting pieces at one end of the bridge frame body are inserted and placed on both sides of the adjacent bridge frame body and fixedly connected with the adjacent bridge frame body by the bolt assembly, wherein the outer periphery of the first grounding hole and the second grounding hole is not subjected to fire-proof spray-coated treatment, and a metal gasket is arranged between the first grounding hole of the integrated connecting piece and the second grounding hole of the adjacent bridge frame body.

7. The trough type bridge according to any one of claims 1 to 6, characterized in that: An elastic expansion joint is provided in the middle of the bridge frame body, and the elastic expansion joint is formed by folding the bridge frame body.

8. The trough type bridge according to claim 7, characterized in that: The part of the elastic expansion joint located at the bottom of the bridge frame body protrudes outward in a V shape, and the part of the elastic expansion joint located at both sides of the bridge frame body protrudes inward in a V shape.

9. The trough type bridge according to claim 7, characterized in that: The portion of the elastic expansion joint located at the bottom of the bridge frame body protrudes outward in a wave shape, and the portion of the elastic expansion joint located at both sides of the bridge frame body protrudes inward in a wave shape.

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