Welding-free trapezoidal bridge

Abstract

The utility model discloses a welding-free trapezoidal bridge, which relates to the technical field of bridges, and comprises bridge ladder sides used for being combined into the bridge and bridge cross arms used for bearing, reinforcing frames are formed in the bridge ladder sides in a die-casting manner, reinforcing grooves are formed in the bridge ladder sides at positions symmetrical to the reinforcing frames in a die-casting manner, and the reinforcing grooves are formed in the bridge ladder sides in a die-casting manner. A plurality of groups of first screw holes are formed in the positions, below the reinforcing grooves, of the interiors of the bridge ladder sides in a penetrating mode, and a plurality of groups of first riveting holes are formed in the bottom ends of the bridge ladder sides in a penetrating mode; according to the utility model, the first riveting hole and the second riveting hole are rapidly installed and fixed through a riveting process, and then the first screw hole and the second screw hole are connected through the bolt, so that the bridge ladder edges are tightly fixed on the two sides of the bridge cross arm, and the whole welding-free rapid installation process of the bridge is realized; and the overall strength and the fastening degree are higher.

Description

Technical Field

[0001] The utility model specifically relates to the technical field of bridge frames, in particular to a welding-free ladder-shaped bridge frame. Background Art

[0002] Cable trays are divided into trough-type cable trays, tray-type cable trays, ladder-type cable trays, grid cable trays and other structures, which are composed of brackets, supports and installation accessories. They can be erected independently or laid on various buildings and pipe gallery brackets. They are mainly used for cable laying. Cables are widely used in daily life. When using cables, cable trays are used in conjunction with them to prevent damage to the cables and increase their service life. At this time, the cables can be placed in the cable trays, which effectively prevents the cables from direct contact with the outside world and increases their overall service life. Among them, the more common and practical one is the ladder-type cable tray, which is what we call a ladder-shaped cable tray.

[0003] Chinese utility model disclosure CN204905791U discloses a riveted ladder bridge, which includes a ladder edge and a ladder rod, wherein the upper end surface and the lower end surface of the ladder edge are respectively bent inward to form a folded edge, and a rivet hole is opened on the folded edge, and the two ends of the ladder rod are connected and fixed to the ladder edge through the rivet hole, and the ladder edge forms a plurality of reinforcement grooves along its length direction;

[0004] The above-mentioned riveted trapezoidal bridge has no welding, no deformation, enhanced compression resistance and cost savings. However, the overall assembly of the bridge is achieved only through the riveting process. On the one hand, the riveted surface is easily deformed, and the stress distribution at the rivet seam is uneven, which may lead to unfavorable stress concentration when the structure is subjected to force. For this reason, we provide a weld-free trapezoidal bridge to compensate for the above problems. Utility Model Content

[0005] The utility model aims to provide a welding-free ladder bridge to solve the problems raised in the background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A weld-free ladder bridge, comprising a bridge ladder side for assembling into a bridge and a bridge cross arm for bearing, wherein a reinforcement frame is die-casted inside the bridge ladder side, and a reinforcement groove is die-casted at a position symmetrical to the reinforcement frame on the bridge ladder side, a plurality of groups of first screw holes are penetrated through the interior of the bridge ladder side below the reinforcement groove, and a plurality of groups of first rivet holes are penetrated through the bottom end of the bridge ladder side;

[0008] Second rivet holes are provided at symmetrical positions on both sides of the bridge cross arm, and connecting plates are integrally die-casted at both ends of the bridge cross arm, and second screw holes are provided inside the connecting plates.

[0009] As a further technical solution of the present invention, the number of the first screw holes and the first rivet holes is consistent, and the number of each group of the first screw holes and the first rivet holes is two.

[0010] As a further technical solution of the utility model, the first rivet hole and the second rivet hole are connected by bolts.

[0011] As a further technical solution of the present invention, the second screw hole is connected to the first screw hole by a bolt.

[0012] As a further technical solution of the utility model, the ladder sides of the bridge frame and the cross arms of the bridge frame are both integrally formed structures.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model places two bridge ladder sides symmetrically. At the same time, the first screw holes and the first rivet holes on the sides of the two bridge ladder sides correspond to the second screw holes and the second rivet holes on the bridge crossarm respectively. The first rivet holes and the second rivet holes are quickly installed and fixed through a riveting process, and then the first screw holes and the second screw holes are connected by bolts to achieve tight fixation of the bridge ladder sides on both sides of the bridge crossarm, thereby realizing a welding-free and quick installation process of the entire bridge. Compared with traditional welding and single riveting, the overall strength and fastening degree are higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a three-dimensional structural schematic diagram of a welding-free ladder-shaped bridge.

[0016] Figure 2 The utility model is a kind of welding-free ladder bridge Figure 1 Schematic diagram of the middle bridge ladder side.

[0017] Figure 3 The utility model is a kind of welding-free ladder bridge Figure 2 Front view of .

[0018] Figure 4 The utility model is a schematic diagram of a bridge cross arm in a welding-free ladder bridge.

[0019] Figure 5 The utility model is a kind of welding-free ladder bridge Figure 4 Bottom view of .

[0020] In the figure: 1, bridge ladder side; 10, reinforcement frame; 11, reinforcement groove; 12, first screw hole; 13, first rivet hole; 2, bridge cross arm; 20, second rivet hole; 21, connecting plate; 22, second screw hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-5 In an embodiment of the utility model, a weld-free ladder bridge comprises a bridge ladder side 1 for assembling into a bridge and a bridge cross arm 2 for bearing, wherein a reinforcement frame 10 is die-casted inside the bridge ladder side 1, and a reinforcement groove 11 is die-casted at a position symmetrical to the reinforcement frame 10 of the bridge ladder side 1, and a plurality of first screw holes 12 are penetrated through the interior of the bridge ladder side 1 below the reinforcement groove 11, and a plurality of first rivet holes 13 are penetrated through the bottom end of the bridge ladder side 1;

[0023] Second rivet holes 20 are formed through symmetrical positions on both sides of the bridge cross arm 2 , and connecting plates 21 are integrally die-casted at both ends of the bridge cross arm 2 , and second screw holes 22 are formed through the interior of the connecting plates 21 .

[0024] In this embodiment, the number of the first screw holes 12 and the first rivet holes 13 are the same, and the number of each group of the first screw holes 12 and the first rivet holes 13 is two.

[0025] In this embodiment, the first rivet hole 13 and the second rivet hole 20 are connected by bolts.

[0026] In this embodiment, the second screw hole 22 is connected to the first screw hole 12 by a bolt.

[0027] In this embodiment, the bridge ladder side 1 and the bridge cross arm 2 are both integrally formed structures.

[0028] The working principle of the utility model is: when in use, the two bridge ladder sides 1 are placed symmetrically. At the same time, the first screw holes 12 and the first rivet holes 13 on the sides of the two bridge ladder sides 1 correspond to the second screw holes 22 and the second rivet holes 20 on the bridge crossarm 2 respectively. The first rivet holes 13 and the second rivet holes 20 are quickly installed and fixed through the riveting process, and then the first screw holes 12 and the second screw holes 22 are connected by bolts to achieve tight fixation of the bridge ladder sides 1 on both sides of the bridge crossarm 2, realizing the welding-free quick installation process of the entire bridge. Compared with traditional welding and single riveting, its overall strength and fastening degree are higher.

[0029] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0030] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A weld-free ladder bridge, characterized in that: The invention comprises a bridge ladder side (1) for assembling into a bridge and a bridge cross arm (2) for bearing, wherein a reinforcement frame (10) is die-casted inside the bridge ladder side (1), and a reinforcement groove (11) is die-casted at a position symmetrical to the reinforcement frame (10) on the bridge ladder side (1), and a plurality of groups of first screw holes (12) are penetrated through the interior of the bridge ladder side (1) below the reinforcement groove (11), and a plurality of groups of first rivet holes (13) are penetrated through the bottom end of the bridge ladder side (1); Second riveting holes (20) are provided through-holes at symmetrical positions on both sides of the bridge frame cross arm (2), and connecting plates (21) are integrally die-cast at both ends of the bridge frame cross arm (2), and second screw holes (22) are provided through-holes inside the connecting plates (21).

2. The weld-free ladder bridge according to claim 1, characterized in that: The number of the first screw holes (12) and the first rivet holes (13) is the same, and the number of each group of the first screw holes (12) and the first rivet holes (13) is two.

3. The weld-free ladder bridge according to claim 1, characterized in that: The first rivet hole (13) and the second rivet hole (20) are connected by bolts.

4. The weld-free ladder bridge according to claim 1, characterized in that: The second screw hole (22) is connected to the first screw hole (12) via a bolt.

5. The weld-free ladder bridge according to claim 1, characterized in that: The bridge ladder side (1) and the bridge cross arm (2) are both integrally formed structures.

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