Floor of cable tray

Abstract

The present application relates to a kind of electric equipment power supply protection technical field, in particular to a kind of NFMC corrosion-resistant composite moulding color steel cable bridge.A kind of NFMC corrosion-resistant composite moulding color steel cable bridge, including bottom plate and being located at the side plate of bottom plate two sides, bottom plate and side plate integrated forming;The junction of bottom plate and side plate is equipped with angular boss;Angular boss and bottom plate, side plate integrated forming, to the inside of bottom plate and side plate protrude.Compared with prior art, the cable bridge of the present application saves raw material, improves bearing capacity, side plate and bottom plate integrated stamping, and angular boss is designed between side plate and bottom plate, and the torsional resistance between side plate and bottom plate is enhanced, and load stability is improved;Meanwhile, side plate reinforcing rib and rectangular boss are designed on side plate, the rigidity and overall bearing capacity of the whole bridge are improved, and the torsional resistance of side plate is enhanced;Bottom plate is designed with bottom plate reinforcing rib, and load force is enhanced.

Description

[0001] This application is a divisional application of the following original application: Application date of the original application: May 17, 2019; Application number of the original application: CN201910411898.4; Invention title of the original application: NFMC corrosion-resistant composite molded color steel cable tray. Technical Field

[0002] This invention relates to the field of power supply and distribution protection technology for electrical equipment, and in particular to an NFMC corrosion-resistant composite molded color steel cable tray. Background Technology

[0003] Cable trays are generally suitable for large enterprises, large-scale engineering substations, cable laying, large bridges, subway cable laying, and offshore drilling sites. Most existing cable trays are made of a single metal frame, which not only makes the overall structure heavy but also expensive and inconvenient for transportation, assembly, disassembly, and widespread use.

[0004] Cable trays are classified into trough type, tray type, ladder type, and mesh type structures, and consist of supports, brackets, and installation accessories. Cable trays inside buildings can be installed independently or attached to various building (structure) and pipe gallery supports. They should be characterized by simple structure, beautiful appearance, flexible configuration, and convenient maintenance. All parts must be galvanized. Cable trays installed outdoors are also permitted.

[0005] Traditional steel cable trays are simply welded from thin steel plates. However, due to the significant weight of the cables themselves, the load-bearing capacity of the cable trays is often insufficient. External reinforcing structures are needed to improve their strength and stability. Existing cable trays typically have flat base plates. Because of the large span of the trays and the weight of the cables and the trays themselves, the metal material pressing the tray trays must have sufficient thickness and strength to ensure load-bearing capacity. Currently, steel plates of approximately 1.2mm-3mm are generally used to meet the strength requirements. Cable trays made from such thick steel plates are quite heavy, resulting in high manufacturing costs and significant difficulties in transportation and lifting during construction. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of the existing technology and provide an NFMC corrosion-resistant composite molded color steel cable tray with high strength, large load capacity, good stability and corrosion resistance.

[0007] To achieve this objective, the technical solution adopted by the present invention is as follows: A corrosion-resistant composite molded color steel cable tray (NFMC) includes a base plate and side plates on both sides of the base plate, wherein the base plate and side plates are integrally formed; a angular boss is provided at the connection between the base plate and the side plates; the angular boss is integrally formed with the base plate and side plates, and protrudes towards the inner surface of the base plate and side plates. The reinforced cable tray is formed by one-time stamping of metal material, and a angular boss protruding towards the inner surface of the cable tray is stamped at the connection between the base plate and the side plates to enhance the torsional resistance between the side plates and the base plate and improve load stability.

[0008] Furthermore, the side plate is provided with side plate reinforcing ribs, which are arranged along the length of the side plate and penetrate through it. The side plate reinforcing ribs increase the rigidity of the side plate and improve the overall load-bearing capacity of the cable tray.

[0009] Furthermore, the side plate has two reinforcing ribs, and the two reinforcing ribs are arranged in parallel.

[0010] Furthermore, the side plate is also provided with multiple rectangular bosses. The rectangular bosses on the side plate increase its torsional resistance.

[0011] Furthermore, the base plate is equipped with reinforcing ribs. Since the cables are laid within the cable tray, the base plate bears the greatest force; the reinforcing ribs on the base plate enhance the load-bearing capacity.

[0012] Furthermore, the bottom plate reinforcing ribs are multiple parallel rectangular protrusions arranged along the width direction of the bottom plate.

[0013] Furthermore, the side plate is provided with a grounding wire hole and a connection hole. Grounding Furthermore, the upper end of the side plate has an "L"-shaped bend perpendicular to the side plate. The cable tray cover plate is placed on the "L"-shaped bend.

[0014] Furthermore, the end of the "L"-shaped bend is also provided with an inward bend.

[0015] Furthermore, there are multiple angular protrusions, and the distance between two adjacent angular protrusions is between 10-20cm.

[0016] Compared with the prior art, the present invention has the following advantages: (1) The cable tray of the present invention saves raw materials and improves load-bearing capacity. The side plate and the bottom plate are integrally stamped and formed, and an angular boss is designed between the side plate and the bottom plate to enhance the torsional resistance between the side plate and the bottom plate and improve the load stability.

[0017] (2) At the same time, side plate reinforcing ribs and rectangular bosses were designed on the side plates, which improved the rigidity and overall load-bearing capacity of the entire cable tray, and enhanced the torsional resistance of the side plates.

[0018] (3) The base plate is designed with base plate reinforcing ribs to enhance the load-bearing capacity. Attached Figure Description

[0019] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of the second embodiment of the present invention; Figure 3 This is a schematic diagram of another structure according to the second embodiment of the present invention; In the diagram, 1-base plate, 11-base plate reinforcing rib, 2-side plate, 21-side plate reinforcing rib, 22-rectangular boss, 23-grounding wire hole, 24-connection hole, 25-"L" shaped bend, 3-corner boss. Detailed Implementation

[0020] The present invention will be further described below with reference to embodiments and accompanying drawings.

[0021] Example 1 like Figure 1 As shown, an NFMC corrosion-resistant composite molded color steel cable tray includes a base plate 1 and side plates 2 on both sides of the base plate. The base plate 1 and side plates 2 are integrally stamped from metal material. An angular boss 3 is stamped at the connection between the base plate 1 and the side plates 2. The angular boss 3 protrudes towards the inner surfaces of the base plate 1 and the side plates 2. The angular boss enhances the strength between the base plate 1 and the side plates 2, increases the torsional resistance between the side plates and the base plate, and improves load stability. During normal use, when a downward force is applied to the cable tray, the side plates will twist. The addition of the angular boss is equivalent to adding a reinforcing rib between the side plates and the base plate, without affecting the cable arrangement within the cable tray.

[0022] When the cable tray height is less than or equal to 100cm, a side plate reinforcing rib 21 is provided on the side plate 2. The side plate reinforcing rib 21 is arranged along the length direction of the side plate 2 and penetrates through the side plate 2. The reinforcing rib 21 is arranged along the length direction of the side plate 2, protrudes towards the inner surface of the side plate, and has a semi-circular cross-section. The side plate reinforcing rib 21 improves the overall load-bearing capacity of the cable tray, increases the rigidity of the cable tray, and reduces the deformation of the cable tray.

[0023] While increasing the stiffness of the side plate, multiple rectangular bosses 22 located on the same horizontal line are provided below the side plate reinforcing ribs 21. The long side of the rectangular bosses 22 is aligned with the length direction of the side plate, and the short side of the rectangular bosses 22 is aligned with the height direction of the side plate. The rectangular bosses 21 increase the torsional resistance of the side plate and prevent the cable tray side plate from twisting and deforming under excessive load.

[0024] The angular protrusion 3 consists of a series of small angular protrusions, with a certain distance between two adjacent angular protrusions 3.

[0025] The base plate is the surface of the cable tray that bears the greatest load. To increase the load capacity of the cable tray, base plate reinforcing ribs 11 are provided on the base plate 1. The base plate reinforcing ribs 11 are multiple parallel rectangular protrusions arranged along the width direction of the base plate 1.

[0026] For metal cable trays, the cable tray system should have reliable electrical connections and be grounded, and the grounding hole should be free of insulating coating. Therefore, a grounding wire hole 23 and a connection hole 24 are provided on the side plate 2. The connection hole 24 is used to fix the connector when connecting two adjacent cable tray sections.

[0027] Cable trays typically have a cover, which is connected to the side plate 2. To facilitate the connection of the cover 2, an "L"-shaped bend 25 perpendicular to the side plate 2 is provided at the upper end of the side plate 2. The end of the "L"-shaped bend 25 also has an inward bend. The use of the "L"-shaped bend increases the strength of the connection with the cover. At the same time, the inward bend at the "L"-shaped bend not only increases the strength but also prevents the edges of the cable tray from scratching the cables or injuring construction workers.

[0028] In this embodiment, the cable tray is made of color steel stamping and integral molding.

[0029] Through testing and comparison, the NFMC corrosion-resistant composite molded color steel cable tray of the present invention saves approximately 20%-60% of raw materials compared to existing cable trays of the same specifications. See Table 1 below. The unit in the table is mm.

[0030]

[0031] Table 2 shows the load-bearing capacity test results for the cable tray of this invention:

[0032] To facilitate the installation of cables serving different purposes, different colored steel plates are selected during the stamping of cable trays. Green represents security, orange represents broadcasting, gray represents high-voltage electricity, red represents low-voltage and fire protection, blue represents communications, and yellow represents structured cabling.

[0033] Example 2 The difference between this embodiment and embodiment 1 is that in this embodiment, when the height of the cable tray is greater than 100 cm, there are two side plate reinforcing ribs 21 on the side plate 2, and the two reinforcing ribs 21 are parallel to each other.

[0034] like Figure 2As shown, an NFMC corrosion-resistant composite molded color steel cable tray includes a base plate 1 and side plates 2 on both sides of the base plate. The base plate 1 and side plates 2 are integrally stamped from metal material. An angular boss 3 is stamped at the connection between the base plate 1 and the side plates 2. The angular boss 3 protrudes towards the inner surfaces of the base plate 1 and the side plates 2. The angular boss 3 enhances the strength between the base plate 1 and the side plates 2, increases the torsional resistance between the side plates and the base plate, and improves load stability. During normal use, when a downward force is applied to the cable tray, the side plates will twist. The addition of the angular boss is equivalent to adding a reinforcing rib between the side plates and the base plate, without affecting the cable arrangement within the cable tray.

[0035] When the cable tray is relatively tall, two parallel side plate reinforcing ribs 21 are provided on the side plate 2. The side plate reinforcing ribs 21 are arranged along the length direction of the side plate 2 and penetrate through the side plate 2. The reinforcing ribs 21 are arranged along the length direction of the side plate 2, protruding towards the inner surface of the side plate, and their cross-section is semi-circular. The side plate reinforcing ribs 21 improve the overall load-bearing capacity of the cable tray and increase its rigidity.

[0036] While increasing the stiffness of the side plates, multiple parallel rectangular bosses 22 are provided in the middle of the two side plate stiffeners 21, located on the same horizontal line. The long side of the rectangular bosses 22 is in the same direction as the length of the side plate, and the short side of the rectangular bosses 22 is in the same direction as the height of the side plate. The rectangular bosses 21 increase the torsional resistance of the side plates and prevent the cable tray side plates from twisting and deforming under excessive load.

[0037] The base plate is the surface of the cable tray that bears the greatest load. To increase the load capacity of the cable tray, base plate reinforcing ribs 11 are provided on the base plate 1. The base plate reinforcing ribs 11 are multiple parallel rectangular protrusions arranged along the width direction of the base plate 1.

[0038] For metal cable trays, the cable tray system should have reliable electrical connections and be grounded, and the grounding hole should be free of insulating coating. Therefore, a grounding wire hole 23 and a connection hole 24 are provided on the side plate 2. The connection hole 24 is used to fix the connector when connecting two adjacent cable tray sections.

[0039] Cable trays typically have a cover, which is connected to the side plate 2. To facilitate the connection of the cover 2, an "L"-shaped bend 25 perpendicular to the side plate 2 is provided at the upper end of the side plate 2. The end of the "L"-shaped bend 25 also has an inward bend. The use of the "L"-shaped bend increases the strength of the connection with the cover. At the same time, the inward bend at the "L"-shaped bend not only increases the strength but also prevents the edges of the cable tray from scratching the cables or injuring construction workers.

[0040] In this embodiment, the cable tray is made of color steel stamping and integral molding.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. Therefore, although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that modifications or equivalent substitutions can still be made to the present invention. All technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered within the scope of the claims of the present invention.

Claims

1. A base plate for a cable tray, characterized in that, The base plate (1) is provided with a base plate reinforcing rib (11), which is used to enhance the load-bearing capacity; The bottom plate reinforcing rib (11) consists of multiple parallel rectangular protrusions arranged along the width direction of the bottom plate (1).

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