Bolt-free bridge connecting piece

Abstract

The utility model relates to the field of cable bridges, in particular to a bolt-free bridge connecting piece. The problems that an existing cable bridge connection mode is poor in safety and reliability, high in cost, low in installation efficiency and the like are effectively solved. The connecting piece comprises a right-angle frame which is used for being attached to the side wall and the bottom wall of the cable bridge; the right-angle frame is provided with a plurality of inserting strip sets, and each inserting strip set is provided with a plurality of separated inserting strips. According to the device, a plug-in type installation mode is adopted, bolt connection is avoided, and the purposes of firm connection, high bearing capacity and long service life are achieved.

Description

Technical Field

[0001] The utility model relates to the field of cable bridges, in particular to a bolt-free bridge connector. Background Art

[0002] Cable tray is a support structure for laying cables. It is a frequently used device in electrical engineering installation and has the effect of aesthetically pleasing external structure. Cable trays are generally divided into three structures: trough type, ladder type and tray type. Cable trays have been produced in my country for several decades and in advanced countries for nearly a hundred years. However, traditional cable trays are connected by bolts, which have low bending and shear strength, and excessive auxiliary materials cause excessive waste of materials. In addition, the installation process is backward, with at least 8 screws and up to 16 screws for each interface. The shortcomings of the prior art are summarized as follows:

[0003] 1. At present, the troughs of traditional cable trays on the market are generally connected to each other through fixing bolts and rectangular plates. The characteristics of this structure are simple structure and convenient processing. However, if the fixing bolts connecting the cable tray are not tight enough, the cable tray will be easily deformed and fall down, making it easy to scratch the cables at the cable tray connection. The cables are also easily scratched by the connecting screws, causing safety hazards.

[0004] 2. When installing traditional cable trays, the joints of the trays are fixed by connecting plates and bolts on both sides of the ends. Each connecting plate requires 6 to 8 sets of connecting bolts, and each connecting end requires 12 to 16 sets of connecting bolts. The installation efficiency is low, causing the installation progress to lag seriously.

[0005] 3. The connecting bolts account for a large number of the entire engineering material volume, and the common surface treatment in the industry is generally electroplating, which is seriously inconsistent with the surface treatment of the bridge body. The surface treatment of the cable bridge is generally sprayed plastic or hot-dip galvanizing, and the service life is not less than 40 years. Bolts are key parts for connecting bridges, and the service life of their electroplated anti-corrosion layer does not exceed 15 years, especially in a humid environment. The life will be even lower. There are two traditional solutions, one is to replace the bolts regularly, and the other is to use special bolts to increase the service life of the bolts. The first solution requires the replacement of the bolts at least 3 times during the use period, which has high maintenance costs and is inconvenient to use; the second solution requires improving the material of the bolts, with a large initial investment and high construction costs.

[0006] 4. The cable tray is composed of multiple bridge units according to the length of the cable to be laid. The two adjacent bridge units are connected together by bolts and a large number of bolt assemblies are used to fix the connection. The workers have a large workload and low work efficiency. The installation process is cumbersome and the cost is seriously wasted. Utility Model Content

[0007] The utility model provides a boltless cable tray connector, which effectively solves the problems of poor safety, poor reliability, high cost and low installation efficiency of the existing cable tray connection method. The device adopts a plug-in installation mode to eliminate the use of bolt connections, thereby achieving the purposes of firm connection, strong load-bearing capacity and long service life.

[0008] The technical solution of the utility model is as follows:

[0009] A boltless cable tray connector, which is used to connect two adjacent cable trays, comprising:

[0010] A right angle frame, the right angle frame is used to fit the side wall and the bottom wall of the cable tray; and a plug group, the right angle frame is provided with a plurality of plug groups, and the plug group is provided with a plurality of separated plugs;

[0011] Wherein, the insert group is installed in a slot provided on the cable tray;

[0012] Among them, one or more of the inserting strips in the inserting strip group are bent and inserted into the card slot, and the remaining inserting strips are directly inserted into the card slot.

[0013] Furthermore, the two adjacent groups of cable trays are connected by two groups of connectors.

[0014] Furthermore, the right-angle frame includes a support plate and side plates that are perpendicular to each other, the support plate is used to fit against the bottom wall of the cable tray, and the side plates are used to fit against the side walls of the cable tray.

[0015] Furthermore, a cutting strip group is installed on the side panel.

[0016] Furthermore, a groove is provided at a contact portion between the inserting strip group and the side wall of the slot.

[0017] Furthermore, a reinforcement chamfer is provided at the connection between the support plate and the side plate of the right-angle frame.

[0018] Furthermore, it also includes:

[0019] A clamping plate, which is mounted on the right-angle frame;

[0020] Wherein, clamping openings are arranged at both ends of the clamping plate, which are respectively plugged into the supporting plates of the two sets of right-angle frames.

[0021] The beneficial effects of the utility model are as follows: 1. The connection structure is not only compact, but also can be fixed to the cable tray by the right angle frame and the cable tray by the inserting strip group, so the connection is firm and has strong anti-pulling ability. At the same time, the right angle frame can increase the bearing capacity of the cable tray connection.

[0022] 2. The boltless connection technology adopted by the utility model is quick to plug and extremely convenient to install, taking only 20% of the time of bolt connection. On the basis of meeting the bearing capacity of the cable bridge, the bridge can be quickly installed without bolts, which improves the installation efficiency by more than 10 times, and the maintenance cost is low, and the overall service life of the bridge project is long. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The utility model is a schematic elevation diagram of a boltless bridge connection piece.

[0024] Figure 2 This is a front view of a boltless bridge connector of the utility model;

[0025] Figure 3 This is a schematic diagram of the installation of a boltless bridge connection piece of the utility model;

[0026] Figure 4 This is a front view of the installation of a boltless bridge connector of the utility model;

[0027] Figure 5 This is a front view of Example 2 of a boltless bridge connector of the utility model.

[0028] As shown in the figure: right angle frame 100, support plate 110, side plate 120;

[0029] Cutting strip group 200, first cutting strip 210, second cutting strip 220, third cutting strip 230;

[0030] Cable tray 300, card slot 310;

[0031] - Clamp-400. DETAILED DESCRIPTION

[0032] The technical solution of the utility model is further described below with reference to the accompanying drawings and through specific embodiments:

[0033] Example 1

[0034] like Figure 1-4 As shown, the utility model provides a boltless bridge frame connector, which includes a right-angle frame 100 and a strip group 200. The boltless bridge frame connector has a higher bearing capacity and reduces raw materials; it saves installation time and can reduce the installation time by 80%; it reduces labor intensity, improves work efficiency, and saves engineering costs.

[0035] The specific connecting parts structure is as follows:

[0036] The right-angle frame 100 is an L-shaped frame, which is composed of a support plate 110 and a side plate 120. The support plate 110 is a horizontal plate, and the side plate 120 is a vertical plate.

[0037] A plurality of cutting strip groups 200 may be provided on a connector. In the present embodiment, each connector is provided with four cutting strip groups 200. Each cutting strip group 200 is provided with a plurality of cutting strips separated from each other. In the present embodiment, each cutting strip group 200 is provided with three cutting strips, namely, a first cutting strip 210, a second cutting strip 220, and a third cutting strip 230.

[0038] The specific installation structure is as follows:

[0039] First, the right-angle frame 100 and the first cable tray 300 are fitted together, so that the support plate 110 fits the bottom plate of the cable tray 300, and the side plate 120 fits the side wall of the cable tray 300. Then, the plug-in group 200 is inserted into the card slot 310 of the cable tray 300. In order to ensure the stability of the plug-in, the contact part of the plug-in group 200 and the side wall of the card slot 310 is provided with a groove 230. In this embodiment, the contact part of the second plug-in 220 and the third plug-in 230 and the side wall of the card slot 310 is provided with a groove 230. After the plug-in is completed, some of the plug-ins are bent. In this embodiment, the first plug-in 210 is bent and fits the outer surface of the card slot 310, so that the entire connector and the cable tray form an integrated structure. Then install the second cable tray in the same way as the first one.

[0040] Example 2

[0041] like Figure 5 As shown, the utility model provides a boltless bridge frame connector, which includes a right-angle frame 100, a strip group 200 and a clamping plate 400. The boltless bridge frame connector has a higher load-bearing capacity and reduces raw materials; it saves installation time and can reduce the installation time by 80%; it reduces labor intensity, improves work efficiency, and saves engineering costs.

[0042] In order to ensure the connection stability of the connection between the two sets of cable trays 400 and improve the bearing capacity of the connection, a clamping plate 400 is installed between the two sets of connectors at the connection between the two sets of cable trays 400. Both ends of the clamping plate 400 are clamping structures, and a plurality of convex teeth are arranged in the clamping. When installed, the clamping plates 400 at both ends are respectively plugged into the support plates 110 of the two sets of right-angle frames 100. Due to the convex tooth structure, the support plates 110 can be stably connected to the clamping plates.

[0043] 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 basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, 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 are included in the present invention.

[0044] 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 boltless cable tray connector, used to connect two adjacent cable trays, characterized in that: include: A right-angle frame, the right-angle frame is used to fit the side wall and bottom wall of the cable tray; as well as, Cutting strip groups, wherein a plurality of cutting strip groups are arranged on the right-angle frame, and a plurality of separated cutting strips are arranged on the cutting strip groups; Wherein, the insert group is installed in a slot provided on the cable tray; Among them, one or more of the inserting strips in the inserting strip group are bent and inserted into the card slot, and the remaining inserting strips are directly inserted into the card slot.

2. A boltless bridge connector according to claim 1, characterized in that: The two adjacent groups of cable trays are connected by two groups of connecting pieces.

3. A boltless bridge connector according to claim 2, characterized in that: The right-angle frame includes a supporting plate and side plates which are perpendicular to each other. The supporting plate is used to fit on the bottom wall of the cable tray, and the side plates are used to fit on the side walls of the cable tray.

4. A boltless bridge connector according to claim 3, characterized in that: The side plate is provided with a cutting strip group.

5. The boltless bridge connector according to claim 1, characterized in that: The contact portion between the inserting strip set and the side wall of the slot is provided with a groove.

6. The boltless bridge connector according to claim 3, characterized in that: A reinforcement chamfer is provided at the connection between the support plate and the side plate of the right-angle frame.

7. The boltless bridge connector according to claim 1, characterized in that: Also includes: A clamping plate, which is mounted on the right-angle frame; Wherein, clamping openings are arranged at both ends of the clamping plate, which are respectively plugged into the supporting plates of the two sets of right-angle frames.

8. The boltless bridge connector according to claim 7, characterized in that: A plurality of convex teeth are arranged in the clamping mouth.

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