Corrosion-resistant cable tray plate and corrosion-resistant cable tray assembled therefrom

Abstract

The present invention discloses a corrosion-resistant cable tray plate and a corrosion-resistant cable tray assembled therefrom. The corrosion-resistant cable tray plate is an ultra-high performance concrete grid structure, including a plurality of crisscrossing main ribs. The main ribs constituting the short sides of the corrosion-resistant cable tray plate are provided with fastener reserved grooves, and the fastener reserved grooves are used to connect two adjacent corrosion-resistant cable tray plates. The present invention creatively proposes to use ultra-high performance concrete to make cable tray plates, and combines them with ingenious structural design to make corrosion-resistant cable tray plates, which have the advantages of good insulation, reducing eddy currents and heating phenomena generated by cables, good mechanical properties, good corrosion resistance, good durability, good fire resistance, no need for galvanizing for anti-corrosion treatment, light weight, and diversified colors, etc., stable volume and low shrinkage, no aging problems, high structural safety, good ductility, no instantaneous brittle fracture, a wide range of material sources, and low overall comprehensive cost, and are suitable for promotion and use.

Description

Technical Field

[0001] The present invention relates to the technical field of cable tray plates, and more specifically, to corrosion-resistant cable tray plates and corrosion-resistant cable trays assembled therefrom. Background Art

[0002] With the continuous extension of cable networks and the continuous development of cable tray wiring technology, the demand for cable tray plates will gradually increase. Traditional cable tray plates include ordinary steel cable tray plates, stainless steel cable tray plates and polymer cable tray plates, but ordinary steel cable tray plates have the disadvantages of easy rust and needing grounding devices, stainless steel cable tray plates have the disadvantages of high cost, needing grounding devices, and easy to cause eddy current phenomena in cables, and polymer cable tray plates have the disadvantages of easy aging, easy deformation, and poor fire resistance.

[0003] Ultra-high performance concrete is a new type of ultra-high performance concrete successfully developed by the French Bouygues Company at the end of the 20th century after high-strength and high-performance concrete. It is composed of well-graded quartz fine sand (without coarse aggregate), cement, quartz powder, silica powder, high-efficiency water reducer, fiber, etc., with ultra-high strength, low brittleness, high resistivity, excellent durability and broad application prospects.

[0004] In view of the above-mentioned shortcomings of traditional cable tray plates, ultra-high performance concrete is used to make cable tray plates, which have the characteristics of good insulation performance, reduction of eddy current and heat generation of cables, good corrosion resistance, good durability, good fire resistance, and easy installation. This product has broad market application prospects. Summary of the invention

[0005] In view of this, the present invention provides a corrosion-resistant cable tray plate with good insulation, good mechanical properties, good durability, good fire resistance, long service life, and the ability to reduce eddy currents and heat generation in cables in order to overcome the defects of traditional cable tray plates such as easy rust, poor insulation, easy deformation, easy aging, poor fire resistance, need for galvanizing for corrosion protection and high cost.

[0006] In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:

[0007] A corrosion-resistant cable tray plate, which is an ultra-high performance concrete grid structure, including a plurality of criss-crossing main ribs. The main ribs constituting the short sides of the corrosion-resistant cable tray plate are provided with fastener reserved grooves, and the fastener reserved grooves are used to connect two adjacent corrosion-resistant cable tray plates.

[0008] The present invention creatively proposes to use ultra-high performance concrete to make cable tray plates, and combines it with ingenious structural design to make corrosion-resistant cable tray plates. The corrosion-resistant cable tray plates have the advantages of good insulation, reducing eddy currents and heat generation in cables, good mechanical properties, good corrosion resistance, good durability, good fire resistance, no need for galvanizing for anti-corrosion treatment, light weight, and diversified colors. They have stable volume and low shrinkage, and are free from aging problems. They have high structural safety, good ductility, and will not produce instantaneous brittle fractures. They have a wide range of material sources and low overall comprehensive cost, and are suitable for popularization and use.

[0009] Preferably, the corrosion-resistant cable tray plate has a length of 1000-3000 mm, a width of 450-650 mm, and a thickness of 30-70 mm.

[0010] In order to reduce the weight of the corrosion-resistant cable tray plate and facilitate construction, the hollowing rate of the corrosion-resistant cable tray plate is preferably controlled between 50% and 70%.

[0011] More preferably, the corrosion-resistant cable tray plate includes 7 main ribs, 4 of which are arranged at intervals along the width direction of the corrosion-resistant cable tray plate, and the other 3 are arranged at intervals along the length direction of the corrosion-resistant cable tray plate. The main ribs are enclosed to form 6 grids, each grid is provided with a number of criss-crossing secondary ribs, and the wall thickness of the secondary ribs is smaller than the wall thickness of the main ribs.

[0012] More preferably, the wall thickness of the main rib is 30-50 mm, and the wall thickness of the secondary rib is 10-30 mm.

[0013] More preferably, along the length direction of the corrosion-resistant cable tray plate, the spacing between two adjacent secondary ribs is 100-200 mm; along the width direction of the corrosion-resistant cable tray plate, the spacing between two adjacent secondary ribs is 30-80 mm.

[0014] Preferably, the main ribs are provided with anti-skid grooves to increase the anti-skid performance of the surface of the corrosion-resistant cable tray plate.

[0015] More preferably, the depth of the anti-slip groove is 1 to 3 mm.

[0016] Preferably, the ultra-high performance concrete has a compressive strength greater than 140 MPa, a flexural strength greater than 20 MPa, and an electrical flux less than 100C.

[0017] More preferably, the ultra high performance concrete has a built-in steel skeleton.

[0018] The preparation method of the corrosion-resistant cable tray plate comprises the following steps:

[0019] S1. Prepare the corrosion-resistant cable tray plate mold, put the welded steel bar skeleton into the mold and set aside;

[0020] S2. The raw materials of ultra-high performance concrete are mixed and stirred in proportion to obtain an ultra-high performance concrete mixture, and poured into the mold prepared in step S1, and then vibrated to form and flatten the surface;

[0021] S3. Cover the cover plate prepared in step S2 with a moisturizing film, demould after curing at room temperature for 24 hours, and then heat cure in an environment of 65-85°C for 24-48 hours to obtain a corrosion-resistant cable tray plate after cooling.

[0022] A corrosion-resistant cable tray, which includes a plurality of corrosion-resistant cable tray plates, supports and fasteners. The plurality of corrosion-resistant cable tray plates are connected in series end to end along their length direction, and the fastener reserved grooves of two adjacent corrosion-resistant cable tray plates are arranged opposite to each other. The two ends of the fastener are respectively clamped in two oppositely arranged fastener reserved grooves, and the support is supported on the side of the two adjacent corrosion-resistant cable tray plates away from the fastener reserved grooves. The two adjacent corrosion-resistant cable tray plates are connected by the cooperation of the support and the fastener.

[0023] The present invention realizes the end-to-end connection of two adjacent corrosion-resistant cable tray plates along their length direction through the cooperation of fasteners and supporting members, thereby providing a combined corrosion-resistant cable tray plate, which enables the corrosion-resistant cable tray to be flexibly extended, facilitates production, transportation and erection, and is conducive to promotion and application.

[0024] Compared with the prior art, the present invention has the following beneficial effects: the corrosion-resistant cable tray plate of the present invention has the advantages of good insulation, reduction of eddy current and heat generation of cables, good mechanical properties, good corrosion resistance, good durability, good fire resistance, no need for galvanizing for anti-corrosion treatment, light weight, and diversified colors. It has stable volume and low shrinkage, no aging problems, high structural safety, good ductility and no instantaneous brittle fracture, wide material sources, low overall comprehensive cost, and is suitable for promotion and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural diagram of the corrosion-resistant cable tray plate.

[0026] Figure 2 yes Figure 1 Enlarged view of part I in the middle.

[0027] Figure 3 yes Figure 2 Middle BB cross-section.

[0028] Figure 4 yes Figure 1 Middle AA section view.

[0029] Figure 5 yes Figure 4 Enlarged view of part II.

[0030] Figure 6 It is a structural diagram of a corrosion-resistant cable tray.

[0031] Figure 7 It is the installation diagram of corrosion-resistant cable tray board.

[0032] Explanation of the reference numerals: corrosion-resistant cable tray plate 100 , main rib 110 , fastener reserved groove 111 , anti-slip groove 112 , secondary rib 120 , support member 210 , buckle 220 , bolt 230 , lengthened nut 240 . DETAILED DESCRIPTION

[0033] The accompanying drawings are only used for illustrative purposes and should not be construed as limitations on the present invention. In order to better illustrate the present embodiment, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product. For those skilled in the art, it is understandable that some well-known structures and their descriptions may be omitted in the accompanying drawings. The description of the positional relationship in the accompanying drawings is only used for illustrative purposes and should not be construed as limitations on the present invention.

[0034] like Figures 1 to 4 As shown, a corrosion-resistant cable tray plate has a length L of 1000-3000 mm, a width W of 450-650 mm, and a thickness H of 30-70 mm, and is an ultra-high performance concrete grid structure, including a plurality of crisscrossing main ribs 110, which enclose a plurality of grids, each of which is provided with a plurality of crisscrossing secondary ribs 120, and the wall thickness t2 of the secondary ribs 120 is less than the wall thickness t1 of the main ribs 110. The main ribs 110 constituting the short sides of the corrosion-resistant cable tray plate are provided with fastener reserved grooves 111, and the fastener reserved grooves 111 are used to connect two adjacent pieces of the corrosion-resistant cable tray plates.

[0035] The present invention creatively proposes to use ultra-high performance concrete to make cable tray plates, and combines it with ingenious structural design to make corrosion-resistant cable tray plates. The corrosion-resistant cable tray plates have the advantages of good insulation, good mechanical properties, good corrosion resistance, good durability, good fire resistance, no need for galvanizing for anti-corrosion treatment, light weight, and a variety of colors. They have stable volume and low shrinkage, and do not have aging problems. They have high structural safety, good ductility, and will not produce instantaneous brittle fracture. The material source is wide, and the overall comprehensive cost is low, so they are suitable for promotion and use.

[0036] Structurally, the present invention adopts a grid structure, so that the corrosion-resistant cable tray plate has a high hollowing rate, which is conducive to avoiding the excessive weight of the cable tray plate caused by the use of ultra-high performance concrete. At the same time, due to the use of a grid structure, in order to ensure its bearing capacity, the present invention reserves a fastener reserved groove 111 on the main rib 110 of the grid structure. When constructing and erecting the cable tray, there is no need to drill holes on the corrosion-resistant cable tray plate, thereby avoiding the reduction of the bearing capacity of the corrosion-resistant cable tray plate. Moreover, the provision of the fastener reserved groove 111 allows the cable tray erected by the corrosion-resistant cable tray plate of the present invention to be flexibly extended to adapt to various terrain and other installation conditions.

[0037] In order to reduce the weight of the corrosion-resistant cable tray plate and facilitate construction, the hollowing rate of the corrosion-resistant cable tray plate is preferably controlled between 50% and 70%. Figure 5 As shown, the wall thickness t1 of the main rib 110 is 30-50 mm, and the wall thickness t2 of the secondary rib 120 is 10-30 mm; the spacing between two adjacent secondary ribs 120 in the length direction of the corrosion-resistant cable tray plate is 100-200 mm, and the spacing in the width direction of the corrosion-resistant cable tray plate is 30-80 mm.

[0038] The main rib 110 is also provided with an anti-skid groove 112 to increase the anti-skid performance of the surface of the corrosion-resistant cable tray plate. The depth of the anti-skid groove 112 is 1 to 3 mm.

[0039] The corrosion-resistant cable tray panels are made of ultra-high performance concrete with a compressive strength greater than 140MPa, a flexural strength greater than 20MPa, and an electrical flux less than 100C. A steel skeleton is built into the ultra-high performance concrete.

[0040] The preparation method of the corrosion-resistant cable tray plate comprises the following steps:

[0041] S1. Prepare the corrosion-resistant cable tray plate mold, put the welded steel bar skeleton into the mold and set aside;

[0042] S2. The raw materials of ultra-high performance concrete are mixed and stirred in proportion to obtain an ultra-high performance concrete mixture, and poured into the mold prepared in step S1, and then vibrated to form and flatten the surface;

[0043] S3. Cover the cover plate prepared in step S2 with a moisturizing film, demould after curing at room temperature for 24 hours, and then heat cure in an environment of 65-85°C for 24-48 hours to obtain a corrosion-resistant cable tray plate after cooling.

[0044] The prepared corrosion-resistant cable tray plate has the advantages of good insulation, reduction of eddy current and heat generation in cables, good mechanical properties, good corrosion resistance, good durability, good fire resistance, no need for galvanizing for anti-corrosion treatment, light weight, and a variety of colors. It has stable volume and low shrinkage, no aging problems, high structural safety, good ductility and no instantaneous brittle fracture, a wide range of material sources, and low overall comprehensive cost, making it suitable for promotion and use.

[0045] like Figure 6 As shown, a corrosion-resistant cable tray comprises a plurality of the above-mentioned corrosion-resistant cable tray plates 100, support members 210 and fasteners 220. These corrosion-resistant cable tray plates 100 are connected in series end to end along their length direction, and fastener reserved grooves 111 of two adjacent corrosion-resistant cable tray plates 100 are arranged opposite to each other. The two adjacent corrosion-resistant cable tray plates 100 are connected by the support members 210 and the fasteners 220, and the two ends of the fasteners 220 are respectively clamped in the two oppositely arranged fastener reserved grooves 111.

[0046] The present invention realizes the end-to-end connection of two adjacent corrosion-resistant cable tray plates 100 along their length direction through the cooperation of the fastener 220 and the support member 210, thereby providing a combined corrosion-resistant cable tray plate 100, which enables the corrosion-resistant cable tray to be flexibly extended, facilitates production, transportation and erection, and is conducive to promotion and application.

[0047] Specifically, an escape space is left between two adjacent corrosion-resistant cable tray plates 100, and the escape space is used for connecting the support member 210 and the fastener 220, so that the support member 210 and the fastener 220 clamp the corrosion-resistant cable tray plate 100 from the thickness direction of the corrosion-resistant cable tray plate 100, without leaving holes for fastening or connection on the corrosion-resistant cable tray plate 100, thereby avoiding reducing or destroying its mechanical properties. It is understandable that the support member 210 and the fastener 220 can be connected by fasteners such as bolts 230 and nuts.

[0048] like Figure 7 As shown, during installation, the two corrosion-resistant cable tray plates 100 are brought close to each other and supported on a support 210, which is a steel beam with an M10 extension nut 240 connected to it. The two corrosion-resistant cable tray plates 100 are respectively placed on both sides of the M10 extension nut 240, and the fastener reserved grooves 110 on the two corrosion-resistant cable tray plates 100 are aligned, and then the fastener 220 is placed into the fastener reserved groove 110. The fastener 220 is a hot-dip galvanized clip with an M-shaped cross-section. Finally, the hot-dip galvanized clip is locked to the steel beam through the connection of the M10*30 hexagon socket bolt 230 and the M10 extension nut 240, thereby realizing the connection and fixation of the two corrosion-resistant cable tray plates 100.

[0049] In order to examine the electrical conductivity, fire resistance, corrosion resistance and bearing capacity of the corrosion-resistant cable tray plate, and its differences from traditional metal cable tray plates, the present invention is further described in detail below in conjunction with specific embodiments.

[0050] Example 1

[0051] A corrosion-resistant cable tray plate, which is 1000 mm long, 450 mm wide, and 30 mm thick, presents an ultra-high performance concrete grid structure, including 7 crisscross main ribs, 4 of which are arranged at intervals along the width direction of the corrosion-resistant cable tray plate, and the other 3 are arranged at intervals along the length direction of the corrosion-resistant cable tray plate; these main ribs enclose 6 compartments, each compartment is provided with a number of crisscrossed secondary ribs, the wall thickness of these secondary ribs is less than the wall thickness of the main ribs, wherein the wall thickness t1 of the main rib is 30 mm, and the wall thickness t2 of the secondary rib is 10 mm; the spacing between two adjacent secondary ribs in the length direction of the corrosion-resistant cable tray plate is 100 mm, and the spacing in the width direction of the corrosion-resistant cable tray plate is 30 mm, and the hollowing rate of the corrosion-resistant cable tray plate is 50%. The main ribs constituting the short sides of the corrosion-resistant cable tray plate are provided with fastener reserved grooves, and the fastener reserved grooves are used to connect two adjacent pieces of the corrosion-resistant cable tray plates. The main ribs are also provided with anti-skid grooves to increase the anti-skid performance of the surface of the corrosion-resistant cable tray plate. The depth of the anti-skid grooves is 1mm. The corrosion-resistant cable tray plate is made of ultra-high performance concrete with a compressive strength greater than 140MPa, a bending strength greater than 20MPa, and an electric flux less than 100C. The ultra-high performance concrete is built with a steel skeleton.

[0052] Example 2

[0053] A corrosion-resistant cable tray plate, which is 3000 mm long, 650 mm wide, and 70 mm thick, presents an ultra-high performance concrete grid structure, including 7 crisscross main ribs, 4 of which are arranged at intervals along the width direction of the corrosion-resistant cable tray plate, and the other 3 are arranged at intervals along the length direction of the corrosion-resistant cable tray plate; these main ribs enclose 6 grids, each grid is provided with a number of crisscrossed secondary ribs, the wall thickness of these secondary ribs is less than the wall thickness of the main ribs, wherein the wall thickness t1 of the main rib is 50 mm, and the wall thickness t2 of the secondary rib is 30 mm; the spacing between two adjacent secondary ribs in the length direction of the corrosion-resistant cable tray plate is 200 mm, and the spacing in the width direction of the corrosion-resistant cable tray plate is 80 mm, and the hollowing rate of the corrosion-resistant cable tray plate is 70%. The main ribs constituting the short sides of the corrosion-resistant cable tray plate are provided with fastener reserved grooves, and the fastener reserved grooves are used to connect two adjacent pieces of the corrosion-resistant cable tray plates. The main ribs are also provided with anti-skid grooves to increase the anti-skid performance of the surface of the corrosion-resistant cable tray. The depth of the anti-skid grooves is 3mm. The corrosion-resistant cable tray is made of ultra-high performance concrete with a compressive strength greater than 140MPa, a bending strength greater than 20MPa, and an electric flux less than 100C. The ultra-high performance concrete is built with a steel skeleton.

[0054] Example 3

[0055] A corrosion-resistant cable tray plate, which is 2000 mm long, 550 mm wide, and 50 mm thick, presents an ultra-high performance concrete grid structure, including 7 crisscross main ribs, 4 of which are arranged at intervals along the width direction of the corrosion-resistant cable tray plate, and the other 3 are arranged at intervals along the length direction of the corrosion-resistant cable tray plate; these main ribs enclose 6 grids, each grid is provided with a number of crisscross secondary ribs, the wall thickness of these secondary ribs is less than the wall thickness of the main ribs, wherein the wall thickness t1 of the main rib is 40 mm, and the wall thickness t2 of the secondary rib is 20 mm; the spacing between two adjacent secondary ribs in the length direction of the corrosion-resistant cable tray plate is 150 mm, and the spacing in the width direction of the corrosion-resistant cable tray plate is 55 mm, and the hollowing rate of the corrosion-resistant cable tray plate is 60%. The main ribs constituting the short sides of the corrosion-resistant cable tray plate are provided with fastener reserved grooves, and the fastener reserved grooves are used to connect two adjacent corrosion-resistant cable tray plates. The main ribs are also provided with anti-skid grooves to increase the anti-skid performance of the surface of the corrosion-resistant cable tray. The depth of the anti-skid grooves is 2mm. The corrosion-resistant cable tray is made of ultra-high performance concrete with a compressive strength greater than 140MPa, a bending strength greater than 20MPa, and an electric flux less than 100C. The ultra-high performance concrete is built with a steel skeleton.

[0056] Comparative Example 1

[0057] Purchase traditional metal cable tray panels.

[0058] The corrosion-resistant cable tray boards prepared in Examples 1 to 3 and the metal cable tray boards of Comparative Example 1 were tested, and the test results are shown in Table 1.

[0059] Table 1 Test results of corrosion-resistant cable tray plates

[0060]

[0061] From Table 1, the conventional metal cable tray plates purchased in Comparative Example 1 have a greater decrease in resistivity, a greater decrease in the use temperature limit of the fire resistance, a greater decrease in the corrosion resistance, and a substantially consistent bearing capacity compared with Example 1. Through a large number of tests, the present invention uses ultra-high performance concrete to make cable tray plates, thereby improving insulation performance, corrosion resistance, and fire resistance.

[0062] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A corrosion-resistant cable tray, characterized in that: It comprises a plurality of corrosion-resistant cable tray plates, supports and fasteners. The corrosion-resistant cable tray plates are ultra-high performance concrete grid structures, including a plurality of criss-crossing main ribs. The main ribs constituting the short sides of the corrosion-resistant cable tray plates are provided with fastener reserved grooves. The fastener reserved grooves are used to connect two adjacent corrosion-resistant cable tray plates. The plurality of corrosion-resistant cable tray plates are connected in series end to end along their length direction. The fastener reserved grooves of two adjacent corrosion-resistant cable tray plates are arranged opposite to each other. The two ends of the fasteners are respectively clamped in two oppositely arranged fastener reserved grooves. The support members are supported on the side of the two adjacent corrosion-resistant cable tray plates away from the fastener reserved grooves. The two adjacent corrosion-resistant cable tray plates are connected by the cooperation of the support members and the fasteners. The fasteners are buckles with M-shaped cross-sections.

2. The corrosion-resistant cable tray according to claim 1, characterized in that: The corrosion-resistant cable tray plate has a length of 1000-3000 mm, a width of 450-650 mm, and a thickness of 30-70 mm.

3. The corrosion-resistant cable tray according to claim 2, characterized in that: The hollowing rate of the corrosion-resistant cable tray plate is 50-70%.

4. The corrosion-resistant cable tray according to claim 2, characterized in that: The corrosion-resistant cable tray plate includes 7 main ribs, 4 of which are arranged at intervals along the width direction of the corrosion-resistant cable tray plate, and the other 3 are arranged at intervals along the length direction of the corrosion-resistant cable tray plate, forming 6 grids. Each grid is provided with a number of criss-crossed secondary ribs, and the wall thickness of the secondary ribs is smaller than the wall thickness of the main ribs.

5. The corrosion-resistant cable tray according to claim 4, characterized in that: The wall thickness of the main rib is 30-50 mm, and the wall thickness of the secondary rib is 10-30 mm.

6. The corrosion-resistant cable tray according to claim 5, characterized in that: Along the length direction of the corrosion-resistant cable tray plate, the distance between two adjacent secondary ribs is 100-200 mm; along the width direction of the corrosion-resistant cable tray plate, the distance between two adjacent secondary ribs is 30-80 mm.

7. The corrosion-resistant cable tray according to any one of claims 1 to 6, characterized in that: The main ribs are provided with anti-slip grooves.

8. The corrosion-resistant cable tray according to claim 7, characterized in that: The depth of the anti-slip groove is 1 to 3 mm.

9. The corrosion-resistant cable tray according to any one of claims 1 to 6, characterized in that: The ultra-high performance concrete used in the ultra-high performance concrete grid structure has a compressive strength greater than 140 MPa, a flexural strength greater than 20 MPa, and an electric flux less than 100C, and a steel skeleton is built into the ultra-high performance concrete.

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