Electromagnetic shielding wire duct of building structure

Abstract

The utility model discloses an electromagnetic shielding wire duct of a building structure, which comprises a steel reinforced concrete duct body constructed on the building structure, a wire box arranged in the steel reinforced concrete duct body, a metal shielding net covering an opening of the wire box, and a grounding wire connected to the metal shielding net, a plurality of diagonal bracings which are horizontally supported at the opening of the wire box are arranged below the metal shielding net, and a wire duct cover plate is arranged above the metal shielding net. According to the utility model, electromagnetic signals can be shielded, electromagnetic interference can be avoided, the signal transmission quality of wires and cables in the trunking can be improved, the structural strength of the trunking can be improved, the structural deformation of the trunking can be reduced, the risk that the trunking is damaged can be reduced, and externally input current and voltage signals can be released; therefore, safety protection is carried out on electric wires and cables in the wire duct from a plurality of angles.

Description

Technical Field

[0001] This utility model relates to the field of building construction technology, and in particular to an electromagnetic shielding cable tray for building structures. Background Technology

[0002] With the rapid development of electronic technology, electromagnetic interference (EMI) and electromagnetic compatibility (EMC) issues are becoming increasingly prominent. Especially in data processing centers, communication base stations, medical equipment, and other locations sensitive to electromagnetic environments, effectively managing and shielding electromagnetic interference generated by wires and cables has become crucial. In building construction, the wires and cables of electronic and electrical equipment are typically installed in cable trays constructed within the building structure for long-distance transmission of useful signals. The electromagnetic interference generated by these electronic and electrical equipment and their connected wires and cables not only affects the normal operation of the equipment itself and other electronic and electrical equipment affected by its electromagnetic signals, but also has adverse effects on human health. Furthermore, the structure of cable trays typically involves creating a channel within the building structure and installing junction boxes inside. The structural strength of the channel and junction boxes is relatively weak. Under heavy loads or external forces such as wind pressure and earthquakes, the cable trays are prone to structural deformation or damage, potentially leading to damage to the wires and cables within, resulting in magnetic leakage and open circuits. Additionally, the aforementioned cable trays are susceptible to damage from strong currents such as lightning strikes, external voltage inputs, or unstable currents caused by poor wire and cable connections. Utility Model Content

[0003] The purpose of this utility model is to provide an electromagnetic shielding cable tray for building structures, in order to solve the problems that cable trays containing wires and cables are easily affected by electromagnetic signal interference, which affects the normal operation of connected electronic and electrical equipment and the adverse effects of electromagnetic radiation on human health; the problems that the cable tray structure is weak and easily deformed or damaged, which leads to poor protection of the wires and cables inside, resulting in magnetic leakage or open circuit; and the problems that the cable tray and the wires and cables inside are easily damaged by external current or voltage input and poor proximity.

[0004] To solve the above-mentioned technical problems, this utility model provides an electromagnetic shielding cable tray for a building structure, comprising: a steel-concrete trough constructed on the building structure, a junction box installed in the steel-concrete trough, a metal shielding mesh covering the opening of the junction box, a grounding wire connected to the metal shielding mesh, multiple horizontal supports provided below the metal shielding mesh at the opening of the junction box, and a cable tray cover plate disposed above the metal shielding mesh.

[0005] Furthermore, in the electromagnetic shielding trough of the building structure provided by this utility model, sunken side grooves are provided on the steel-concrete trough on both sides, and the lower surface of the side groove is provided with a groove. The metal shielding mesh includes a metal mesh and multiple metal columns fixedly provided on both sides. The metal shielding mesh is slidably connected to the groove of the corresponding side groove through the metal columns on both sides.

[0006] Furthermore, in the electromagnetic shielding cable trough of the building structure provided by this utility model, an angle steel is provided on the side trough, and the groove is provided on the angle steel.

[0007] Furthermore, the electromagnetic shielding cable tray for the building structure provided by this utility model has a metal cable box, which is connected to a grounding wire, and the inside of the metal cable box is coated with an electromagnetic shielding layer and an anti-corrosion layer.

[0008] Furthermore, the electromagnetic shielding cable tray for the building structure provided by this utility model has a non-metallic cable box, and the non-metallic cable box is coated with a conductive layer, an electromagnetic shielding layer and an anti-corrosion layer in sequence, and the conductive layer is connected to a grounding wire.

[0009] Furthermore, the electromagnetic shielding cable tray for the building structure provided by this utility model has a metal cover plate, which is coated with an electromagnetic shielding layer and an anti-corrosion layer, and is connected to a grounding wire.

[0010] Furthermore, the electromagnetic shielding cable tray for the building structure provided by this utility model has a non-metallic cover plate, which is coated with a conductive layer, an electromagnetic shielding layer, and an anti-corrosion layer, and the conductive layer is connected to a grounding wire.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] The electromagnetic shielding cable tray for building structures provided by this utility model, through a metal shielding mesh covering the open end of the junction box, can effectively prevent electromagnetic signals generated by the wires and cables inside the junction box from leaking outside the box, and can also prevent external electromagnetic signals from entering the junction box and adversely affecting the normal operation of the wires, cables, and connected electronic and electrical equipment. This prevents electromagnetic interference, avoids adverse effects of electromagnetic radiation on human health, ensures the signal transmission quality of the wires and cables inside the junction box, and reduces signal loss and error rate. Through the grounding wire connected to the metal shielding mesh, spike current and voltage signals generated by external current signals, external voltage signals, or poor contact can be released to ground, thereby reducing the risk of electric shock and preventing damage to the wires and cables inside the junction box.

[0013] The electromagnetic shielding cable tray provided by this utility model improves the structural strength of the tray by using steel sections within the steel-concrete tray. This reduces the risk of structural deformation or damage when subjected to large loads or external forces such as wind pressure and earthquakes. The horizontal bracing at the opening of the junction box within the steel-concrete tray significantly enhances the lateral stiffness and deformation resistance of the junction box. Through this dual anti-deformation design of the steel-concrete tray and the bracing, the structural safety of the electromagnetic shielding junction box is ensured, its service life is extended, the risk of structural deformation or damage to the tray is reduced, and problems such as magnetic leakage or open circuits due to inadequate protection of the wires and cables inside the junction box are minimized or avoided. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the electromagnetic shielding cable tray in a building structure;

[0015] Figure 2 This is a schematic diagram of the elevation structure of the electromagnetic shielding cable tray in the building structure;

[0016] Figure 3 This is a schematic diagram of the planar structure of the electromagnetic shielding cable tray in the building structure;

[0017] Figure 4 This is a schematic diagram of the structure of the junction box with a conductive layer, an electromagnetic shielding layer, and an anti-corrosion layer coated inside.

[0018] As shown in the figure:

[0019] 100. Electromagnetic shielding cable trays in building structures;

[0020] 110. Steel-concrete trough; 111. Steel section; 112. Concrete structure;

[0021] 120. Junction box; 121. Conductive layer; 122. Electromagnetic shielding layer; 123. Anti-corrosion layer; 124. Opening.

[0022] 130. Metal shielding mesh; 121. Metal wire mesh; 122. Metal post.

[0023] 140. Grounding wire;

[0024] 150. Cable tray cover;

[0025] 160. Horizontal bracing;

[0026] 170. Side groove; 171. Groove. Detailed Implementation

[0027] The present invention will now be described in detail with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0028] Please refer to Figures 1 to 4 This utility model provides an electromagnetic shielding cable tray 100 for a building structure, comprising: a steel-concrete trough 110 constructed on the building structure, a junction box 120 installed inside the steel-concrete trough 110, a metal shielding mesh 130 covering the opening of the junction box 120, a grounding wire 140 connected to the metal shielding mesh 130, multiple horizontal supports 160 located below the metal shielding mesh 130 and positioned at the opening of the junction box 120, and a cable tray cover plate 150 disposed above the metal shielding mesh 130.

[0029] Please refer to Figures 1 to 3 To facilitate the assembly and disassembly of the metal shielding mesh 130, the electromagnetic shielding cable tray 100 of the building structure provided in this embodiment of the utility model has recessed side grooves 170 on both sides of the steel-concrete trough 110. The lower surface of each side groove 170 has a downward-facing groove 171. The metal shielding mesh 130 includes a metal mesh 131 and multiple metal posts 132 fixedly arranged on both sides. The metal shielding mesh is slidably connected to the corresponding groove 171 of the side groove 170 via the metal posts 132 on both sides. The metal shielding mesh 130 can slide within the groove 171 of the side groove 170, facilitating its assembly and disassembly, and enabling the installation and maintenance of the wires and cables in the junction box 120 below it.

[0030] This utility model embodiment also provides a construction method for an electromagnetic shielding cable tray 100 in a building structure, which may include the following steps:

[0031] Step 201: Create a rectangular groove along the surface of the building structure, which is mainly the ground or can be a wall. The cross-sectional shape of the rectangular groove created on the building structure is usually U-shaped.

[0032] Step 202: Install steel sections 111 on both sides of the rectangular trench and pour concrete 112 to form a steel-concrete trough 110. The steel-concrete trough 110 improves the structural strength of the traditional trough. The steel sections 111 can be H-beams, I-beams, channel steel, etc.

[0033] Step 203: Install junction box 120 inside steel-concrete trough 110. Junction box 120 can be U-shaped, C-shaped, etc.

[0034] In step 204, multiple horizontal braces 160 are installed at the opening 124 of the junction box 120. To improve the support strength, the braces 160 can be steel components such as reinforcing bars or steel pipes. The braces 160 can prevent structural deformation of the junction box 120.

[0035] Step 205: Side grooves 170 are formed on the upper surface of the steel-concrete trough 110 along both sides of the opening 124 of the junction box 120. That is, the side grooves 170 are formed by cutting a rectangular notch at the edge of the upper surface of the long side of the steel-concrete trough 110.

[0036] Step 206: Construct groove 171 within side groove 170. Groove 171 can be a C-shaped groove or a dovetail groove, etc.

[0037] Step 207: The metal shielding mesh 130, composed of metal pillars 132 and metal mesh 131, is slidably installed in the groove 171 of the side slot 170 via the metal pillars 132. Multiple metal pillars 132 are provided on each side of the metal shielding mesh 130. Electromagnetic signals are shielded by the metal shielding mesh 130. To improve the electromagnetic shielding effect, the metal pillars 132 can be copper pillars, and the metal mesh 131 can be copper wire mesh.

[0038] Step 208: Ground the metal shielding mesh 130 through the grounding wire 140.

[0039] Step 209: Install the cable tray cover plate 150 covering the side channel 170 and the metal shielding mesh 130 to enclose the junction box 120. The cable tray cover plate 150 protects the steel-concrete trough 110, the metal shielding mesh 130, the support 160, and the junction box 120.

[0040] The electromagnetic shielding cable tray 100 and its construction method provided in this embodiment of the utility model, through the metal shielding mesh 130 covering the opening 124 of the junction box 120, can shield electromagnetic signals generated by the wires and cables inside the junction box 120 from leaking outside the junction box 120, and can also shield external electromagnetic signals from entering the junction box 120 and adversely affecting the normal operation of the wires and cables and the connected electronic and electrical equipment. This prevents electromagnetic interference, avoids adverse effects of electromagnetic radiation on human health, ensures the signal transmission quality of the wires and cables inside the junction box 120, and reduces signal loss and error rate. Through the grounding wire 140 connected to the metal shielding mesh 130, the peak current and voltage signals input to the metal shielding mesh 130 or generated by poor contact can be released to ground, thereby reducing the safety of electric shock accidents and preventing damage to the wires and cables inside the junction box 120. The grounding wire 140 can also release lightning signals, providing a lightning protection effect.

[0041] The electromagnetic shielding cable tray 100 and its construction method for building structures provided in this embodiment of the utility model improve the structural strength of the cable tray by using the steel in the steel-concrete cable tray 110. When subjected to large loads or external forces such as wind pressure and earthquakes, it can reduce the problem of cable tray structural deformation or damage. The horizontal support 160 is provided at the opening 124 of the junction box 120 inside the steel-concrete cable tray 110, thereby significantly improving the lateral stiffness of the junction box 120 and its resistance to deformation. The support 160 can reduce the damage to the junction box 120 caused by deformation and cracking of the steel-concrete cable tray 110 during use. Thus, through the dual anti-deformation design of the steel-concrete cable tray and the support 160, the structural safety of the electromagnetic shielding junction box 120 is guaranteed, the service life of the electromagnetic shielding junction box 120 is extended, the risk of structural deformation or damage to the cable tray is reduced, and the problems of leakage magnetic field or open circuit are reduced or avoided due to poor protection of the wires and cables inside the junction box 120. The steel-concrete trough 110 mainly uses the steel 111 inside to enhance the strength of the traditional trough opening, strengthen the traditional trough, and prevent deformation of the trough's spatial structure, thereby avoiding the problem of the traditional trough being easily damaged.

[0042] The electromagnetic shielding cable tray 100 and its construction method for building structures provided in this utility model embodiment cover and protect the cable box 120 by covering the cable box 120 with a cover plate, so as to avoid the wires and cables inside the cable box 120 being exposed.

[0043] Please refer to Figure 1 To improve the structural strength of the side groove 170 and enable it to bear the loads applied by the cable tray cover plate 150 and the objects and equipment on it, the electromagnetic shielding cable tray 100 of the building structure provided in this embodiment of the utility model is provided with angle steel on the side groove 170, and the groove 171 is provided on the angle steel. The angle steel can also improve the sliding connection quality between the angle steel and the metal shielding mesh 130, thereby improving the reliability and service life of the sliding connection. The sliding connection between the metal shielding mesh 130 and the side groove 170 allows for easy adjustment and tight fixing of the metal shielding mesh 130 to the steel-concrete trough body 110, ensuring the complete and continuous installation of the metal shielding mesh 130 and preventing electromagnetic leakage caused by disconnection.

[0044] Please refer to Figure 4To improve the electromagnetic shielding effect and service life, this embodiment of the utility model provides an electromagnetic shielding cable tray 100 for building structures. The cable box 120 is a metal cable box 120, connected to a grounding wire 140. The metal cable box 120 is coated with an electromagnetic shielding layer 122 and an anti-corrosion layer 123. Thus, the metal cable box 120, its internal electromagnetic shielding layer 122, and the metal shielding mesh 130 form a three-layer electromagnetic shielding structure, thereby improving the electromagnetic shielding effect. The anti-corrosion layer 123 increases the service life of the cable box 120 and reduces the risk of corrosion, making it suitable for applications under various environmental conditions. To prevent damage to the electromagnetic shielding cable tray 100 and its internal wires and cables from external current and voltage signals, the grounding wire 140 connected to the metal cable box 120 and electromagnetic shielding mesh 130 can release current and voltage to the ground, improving the efficiency of releasing external current and voltage and preventing instantaneous damage to the electromagnetic shielding cable tray 100 and its internal wires and cables from large external currents and voltages. The electromagnetic shielding layer 122 can be a metal coating such as aluminum foil or copper foil, or it can be metallized paper or semiconductor paper.

[0045] To further improve the electromagnetic shielding effect and prevent electric shock and damage to the electromagnetic shielding trough 100 and its internal wires and cables, the electromagnetic shielding trough 100 of the building structure provided in this embodiment of the utility model has a metal cover plate 150. The metal cover plate is coated with an electromagnetic shielding layer and an anti-corrosion layer, and the metal cover plate is connected to a grounding wire 140. In this case, the electromagnetic shielding trough 100 forms a five-layer electromagnetic shielding structure through the metal cover plate and its electromagnetic shielding layer, the metal shielding mesh 130, the metal junction box 120 and its internal electromagnetic shielding layer 122, thereby improving the electromagnetic shielding effect and enhancing the performance against electromagnetic interference. The triple grounding method, consisting of the metal cover plate, the metal shielding mesh 130, and the grounding wire 140 connected to the metal junction box, avoids and releases external current and voltage signals, preventing damage to the electromagnetic shielding trough 100 and its internal wires and cables caused by sudden large currents and voltages, thus ensuring the safe use of the electromagnetic shielding trough 100.

[0046] The construction method of the electromagnetic shielding cable tray 100 of the building structure provided in this utility model embodiment is as follows: when the cable tray is a metal cable tray and the cable tray cover plate 150 is a metal cover plate, an electromagnetic shielding layer 122 and an anti-corrosion layer 123 are coated inside the cable tray and on the inner surface of the cable tray cover plate 150, and the cable tray and the cable tray cover plate 150 are connected to the grounding wire 140.

[0047] The electromagnetic shielding cable tray 100 and its construction method for building structures provided in this embodiment of the invention utilize conductive materials such as metal junction boxes 120 and cable tray covers 150, along with an additional metal shielding mesh 130, to significantly enhance the electromagnetic shielding effect of the electromagnetic shielding cable tray 100. This multi-shielding design effectively reduces the impact of external electromagnetic interference on the internal wires or cables of the electromagnetic shielding cable tray 100, ensuring the stability and safety of signal transmission.

[0048] Please refer to Figure 4 To reduce costs and improve electromagnetic shielding effectiveness, this embodiment of the invention provides an electromagnetic shielding cable tray 100 for building structures. The cable box 120 is a non-metallic cable box 120, with a conductive layer 121, an electromagnetic shielding layer 122, and an anti-corrosion layer 123 sequentially coated inside. The conductive layer 121 is connected to a grounding wire 140. In this case, the electromagnetic shielding cable tray 100, through the metal shielding mesh 130 and the electromagnetic shielding layer 122, forms a double-layer electromagnetic shielding structure, enhancing the electromagnetic shielding effect. The non-metallic cable box reduces the cost of the cable box 120 compared to a metal cable box. The grounding wire 140, connected to the conductive layer 121 and the metal shielding mesh 130, releases external input current and voltage, preventing electric shock and damage to the electromagnetic shielding cable tray 100 and its internal wires and cables.

[0049] To reduce costs and improve the ability to release external current and voltage signals to the ground, this utility model provides an electromagnetic shielded cable tray 100 for building structures. The cable tray cover 150 is a non-metallic cover plate, coated with a conductive layer 121, an electromagnetic shielding layer 122, and an anti-corrosion layer 123. The conductive layer 121 is connected to a grounding wire 140. External current and voltage signals are introduced to the ground through the conductive layer 121, the grounding wire 140 of the metal shielding mesh 130, and the cable tray 100, thereby ensuring the safe use of the electromagnetic shielded cable tray 100, preventing electric shock and damage to wires and cables, and improving the protection effect on the electromagnetic shielded cable tray 100 and the wires and cables inside.

[0050] The present invention provides a construction method for an electromagnetic shielding cable tray 100 in a building structure. When the cable tray is a non-metallic cable tray and the cable tray cover plate 150 is a non-metallic cover plate, a conductive layer 121, an electromagnetic shielding layer 122, and an anti-corrosion layer 123 are coated inside the cable tray and on the inner surface of the cable tray cover plate 150. The conductive layer 121 is then connected to the grounding wire 140. For ease of installation and maintenance, the cable tray cover plate 150 can be detachably connected.

[0051] The construction method of the electromagnetic shielding cable tray 100 of the building structure provided in this embodiment of the utility model mainly utilizes the electromagnetic shielding performance of the metal shielding mesh 130 to protect the normal operation and safety of the wires and cables of the junction box 120 of the metal shielding mesh 130 and the connected electronic and electrical equipment under severe electromagnetic interference, and to avoid the wires and cables in the junction box 120 being subjected to electromagnetic interference.

[0052] The electromagnetic shielding cable tray 100 and its construction method provided in this embodiment of the utility model can ensure the neat installation of wires and cables inside the junction box 120. The junction box 120 can be divided into compartments to neatly install different types of wires and cables.

[0053] The electromagnetic shielded cable tray 100 and its construction method for building structures provided in this utility model embodiment can effectively absorb electromagnetic waves and radio frequency waves through a multi-layer electromagnetic shielding structure, reduce electromagnetic signal interference and remote disturbance of magnetic objects, thereby protecting the cable tray and the internal cables and ensuring line transmission.

[0054] The electromagnetic shielding cable tray 100 and its construction method provided in this embodiment of the utility model utilize electromagnetic eddy currents generated by the metal shielding mesh 130 to reduce the temperature of the heat conduction environment in the signal power supply. Simultaneously, the large area of ​​the electromagnetic shielding cable tray 100 facilitates heat dissipation.

[0055] The electromagnetic shielding cable tray 100 and its construction method for building structures provided in this utility model embodiment provide safety protection for wires and cables from multiple angles, including the structural strength design of the steel-concrete trough 110, the electromagnetic shielding effect of the electromagnetic shielding mesh 130, the supporting strength of the bracing 160 to the junction box 120, the protective effect of the cable tray cover plate 150, and the grounding wire 140 for the release of external current and voltage signals to the ground.

[0056] This utility model is not limited to the specific embodiments described above. Obviously, the embodiments described above are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art are within the scope of protection of this utility model. Those skilled in the art can make other levels of modifications and variations to this utility model. Therefore, if these modifications and variations of this utility model fall within the scope of the claims of this utility model, this utility model also intends to include these modifications and variations.

Claims

1. An electromagnetic shielding cable tray for a building structure, characterized in that, include: A steel-concrete trough constructed on a building structure, a junction box installed inside the steel-concrete trough, a metal shielding mesh covering the opening of the junction box, a grounding wire connected to the metal shielding mesh, multiple horizontal supports installed below the metal shielding mesh at the opening of the junction box, and a trough cover plate installed above the metal shielding mesh.

2. The electromagnetic shielding cable tray for the building structure according to claim 1, characterized in that, The steel-concrete trough has sunken side grooves on both sides of the steel-concrete structure. The lower surface of the side groove has a groove. The metal shielding mesh includes a metal mesh and multiple metal columns fixed on both sides. The metal shielding mesh is slidably connected to the groove of the corresponding side groove through the metal columns on both sides.

3. The electromagnetic shielding cable tray for the building structure according to claim 2, characterized in that, An angle steel is provided on the side groove, and the groove is provided on the angle steel.

4. The electromagnetic shielding cable tray for the building structure according to claim 1, characterized in that, The junction box is a metal junction box, which is connected to a grounding wire. The metal junction box is coated with an electromagnetic shielding layer and an anti-corrosion layer.

5. The electromagnetic shielding cable tray for the building structure according to claim 1, characterized in that, The junction box is a non-metallic junction box, and a conductive layer, an electromagnetic shielding layer and an anti-corrosion layer are sequentially coated inside the non-metallic junction box. The conductive layer is connected to a grounding wire.

6. The electromagnetic shielding cable tray for the building structure according to claim 1, characterized in that, The cable tray cover is a metal cover, and the inside of the metal cover is coated with an electromagnetic shielding layer and an anti-corrosion layer. The metal cover is connected to a grounding wire.

7. The electromagnetic shielding cable tray for the building structure according to claim 1, characterized in that, The cable tray cover is a non-metallic cover, and the non-metallic cover is coated with a conductive layer, an electromagnetic shielding layer and an anti-corrosion layer. The conductive layer is connected to a grounding wire.

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