A fire-resistant slot box

Abstract

This utility model discloses a fire-resistant cable tray, belonging to the field of cable tray technology. The fire-resistant cable tray includes a main body and a cover plate. A cable tray is provided on the inner wall of the main body, and a heat dissipation component is fixedly installed at the bottom of the main body. A pressure-limiting component is provided at the bottom of the cover plate. The heat dissipation component includes a base installed at the bottom of the main body, and the pressure-limiting component includes a connecting plate installed at the bottom of the cover plate. This significantly reduces the trigger threshold, minimizes the impact of residual adhesive on the sealing effect, and provides multiple heat dissipation vents at the bottom of the main body and multiple vents on both sides of the base. Compared to simply providing vents at the bottom, this significantly improves heat dissipation, allowing for better heat dissipation. Furthermore, the cable dispersion and limiting method reduces the stacking and obstruction of cables, improving the practicality of the device.

Description

Technical Field

[0001] This utility model relates to the field of slot box technology, and more specifically, to a fire-resistant slot box. Background Technology

[0002] Cable trays are typically made of high-temperature and fire-resistant materials. As a common support and protection device for cable laying in electrical equipment power supply systems, cable trays protect and guide the cables laid within. However, in actual use, the operation of cables generates a large amount of heat, and the typically sealed structure of the cable tray prevents this heat from dissipating. Prolonged operation at high temperatures accelerates cable aging and can easily lead to cable fires.

[0003] To address the above issues, application number 201911310517.X, entitled "A Breathable Fire-Resistant Tank," describes a device comprising a main body installed on a wall and a cover plate fixedly nested on the main body via a slot. The cover plate has an exhaust vent on its upper surface along the direction of gravity, and an inner baffle that can fall under gravity to seal the exhaust vent. One side of the exhaust vent is supported by a thermoplastic support strip that melts when heated. This invention uses the thermoplastic support strip to tilt the baffle above the exhaust vent, allowing unobstructed airflow into the main body through the exhaust vent by lifting one side of the baffle. In the event of a fire outside the main body and cover plate, it prevents the fire from spreading to cables; conversely, if a fire occurs inside the main body and cover plate, it prevents the fire from spreading outwards. This device, through the thermoplastic support strip and baffle, retains the exhaust function of the exhaust vent while providing a certain degree of fire isolation, preventing the spread of fire.

[0004] Although this device has many beneficial effects, it still has the following problems: Although the device can lift one side of the baffle to allow air to enter the main body through the exhaust hole without obstruction, and in the event of a fire on the main body and the cover plate, the heat-fused support strip melts when heated, causing the baffle to fall under the action of gravity and cover the exhaust hole, in actual use, the device uses the heat-fused strip set at the top. This means that in actual use, the external temperature is often high for it to melt completely and trigger. However, when the heat-fused strip is used in the early stages of a fire, the temperature is often low, and it does not melt completely. It leaves residual glue on the top, which makes it difficult to effectively cover the exhaust hole. Its sensitivity is poor, which causes great trouble in actual use.

[0005] Furthermore, this device typically involves laying cables directly inside the cable tray. When multiple cables are placed simultaneously, they are prone to tangling and piling up due to a lack of orderly constraints. This disordered laying state causes the cables in the central area to be tightly wrapped by the outer cables, forming a closed space where heat is difficult to dissipate. The temperature of the cables in the central area will be significantly higher than that of the outer cables. Being in a high-temperature state for a long time not only accelerates the aging of the insulation layer, but may also cause short-circuit faults due to local overheating. This undoubtedly poses a great hidden danger to actual use.

[0006] In view of this, we propose a fire-resistant slot box. Utility Model Content

[0007] 1. Technical problems to be solved

[0008] The purpose of this invention is to provide a fire-resistant slot box to solve the problems mentioned in the background art.

[0009] 2. Technical Solution

[0010] A fire-resistant trough includes a main body and a cover plate. A cable tray is provided on the inner wall of the main body. A heat dissipation component is fixedly installed on the bottom of the main body. A pressure limiting component is provided on the bottom of the cover plate. The heat dissipation component includes a base installed on the bottom of the main body. The pressure limiting component includes a connecting plate installed on the bottom of the cover plate.

[0011] Preferably, the cable tray is installed at the top end and the bottom end of the main body, and a heat dissipation vent is also provided on the top of the main body.

[0012] Preferably, the outer walls on both sides of the base are provided with heat dissipation vents, and the outer walls on both sides of the base are also respectively attached with hot melt support strips, and the ends of the multiple hot melt support strips are attached with fireproof shielding plates.

[0013] Preferably, the outer walls on both sides of the base are provided with guide grooves, and the plurality of fireproof shielding plates are slidably connected to the outer walls on both sides of the base through the guide grooves.

[0014] Preferably, the plurality of connecting plates are respectively screwed to the front end and the end end of the bottom of the cover plate, and a connecting shell is also provided at the bottom of the plurality of connecting plates.

[0015] Preferably, a mounting plate is provided on the top of the plurality of connecting shells, a spring is connected to the bottom of the mounting plate, and a pressing limit plate is connected to the end of the spring.

[0016] 3. Beneficial effects

[0017] Compared with the prior art, the advantages of this utility model are as follows: In actual use, the device sets the hot-melt support strips on the outer walls of both sides of the base. In the event of a fire outside or inside the slot, the temperature does not need to completely melt the hot-melt support strips. It only needs to slightly melt them so that they can naturally fall down by the weight of the fireproof board and block the heat dissipation vents on both sides of the base, thereby reducing the spread of flames. When in use, it greatly reduces the trigger threshold and reduces the impact of residual glue caused by incomplete melting on the sealing. In addition, the device has multiple heat dissipation vents at the bottom of the main body and multiple heat dissipation vents on both sides of the base. Compared with a single heat dissipation vent at the bottom, its heat dissipation effect is significantly improved, and the internal heat can be better dissipated.

[0018] Furthermore, during use, multiple cables can be placed in multiple cable trays on top of multiple cable racks. Then, the cover plate can be snapped onto the top of the main body and fixed with screws. During the installation of the cover plate, the pressing and limiting plates inside the multiple connecting shells will adaptively adjust and press against the cables due to the action of springs, thereby better limiting and pressing against cables of various thicknesses. This method of dispersed cable limiting can better reduce the situation of cables stacking and obstructing each other when placed together, and facilitates heat dissipation of the cables, thus improving the practicality of the device. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the base structure of this utility model;

[0021] Figure 3 This is a schematic diagram of structure A of this utility model;

[0022] Figure 4 This is a schematic diagram of the cover plate structure of this utility model;

[0023] Figure 5 This is a schematic diagram of the internal structure of the connecting shell of this utility model;

[0024] The following are the labels in the diagram: 100, main body; 110, heat dissipation vent 1; 120, cable tray; 130, base; 140, heat dissipation vent 2; 150, hot melt support strip; 160, fireproof shielding plate; 200, cover plate; 210, connecting plate; 220, connecting shell; 221, mounting plate; 222, spring; 223, pressing limit plate. Detailed Implementation

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0026] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Please see Figure 1-5 This utility model provides a technical solution:

[0029] A fire-resistant trough includes a main body 100 and a cover plate 200. A cable tray 120 is provided on the inner wall of the main body 100. A heat dissipation component is fixedly installed at the bottom of the main body 100. A pressure limiting component is provided at the bottom of the cover plate 200. The heat dissipation component includes a base 130 installed at the bottom of the main body 100. The pressure limiting component includes a connecting plate 210 installed at the bottom of the cover plate 200.

[0030] In some embodiments, the main body 100, the cover plate 200 and the fireproof shielding plate 160 are all made of cold-rolled steel plate as the base material and the surface is sprayed with fireproof coating. The fireproof coating can be an acrylic intumescent fireproof coating.

[0031] Specifically, the cable tray 120 is installed at the top end and the end of the main body 100, and the top of the main body 100 is also provided with a heat dissipation vent 110 to facilitate heat dissipation of the cables.

[0032] Furthermore, heat dissipation vents 140 are provided on both sides of the outer wall of the base 130, and hot-melt support strips 150 are also attached to both sides of the outer wall of the base 130. Fireproof shielding plates 160 are attached to the ends of multiple hot-melt support strips 150.

[0033] In some embodiments, the multiple hot melt support strips 150 are strip-shaped structures made of EVA hot melt adhesive material. EVA hot melt adhesive is a solvent-free, water-free, 100% solid, fusible polymer. It is solid at room temperature and melts into a flowable liquid adhesive with a certain viscosity when heated to a certain extent. After melting, it is a light brown translucent or off-white substance. Generally, the melting point of EVA hot melt adhesive is around 80°C, and the temperature of the flame is much higher than this melting point. All of the above belongs to the prior art.

[0034] Furthermore, guide grooves are provided on both sides of the outer wall of the base 130, and multiple fireproof shielding plates 160 are slidably connected to both sides of the outer wall of the base 130 through the guide grooves, so as to shield the heat dissipation vent 2 140 and reduce the spread of flames.

[0035] Furthermore, multiple connecting plates 210 are respectively screwed to the front and rear ends of the bottom of the cover plate 200, and a connecting shell 220 is also provided at the bottom of the multiple connecting plates 210.

[0036] It is worth noting that multiple connecting shells 220 are provided with mounting plates 221 on the top, and springs 222 are connected to the bottom of the mounting plates 221. Pressing limit plates 223 are connected to the ends of the springs 222, which facilitates limiting the movement of cables of various thicknesses.

[0037] Working Principle: In actual use, the device places the heat-melting support strips 150 on the outer walls of both sides of the base 130. In the event of a fire outside or inside the compartment, the temperature does not need to completely melt the heat-melting support strips; only slight melting is required. The weight of the fireproof plate 223 allows the strips to naturally descend, thus sealing the heat dissipation vents 140 on both sides of the base 130, thereby reducing the spread of flames. This significantly lowers the trigger threshold and reduces the impact of residual adhesive from incomplete melting on the sealing effect. Furthermore, the device has multiple heat dissipation vents 110 at the bottom of the main body 100 and multiple heat dissipation vents 140 on both sides of the base 130. Compared to simply opening a heat dissipation vent at the bottom, its heat dissipation effect is significantly improved. With improved heat dissipation, the device allows for better heat dissipation. During use, multiple cables can be placed in the cable trays on top of multiple cable trays 120. The cover plate 200 can then be snapped onto the top of the main body 100 and secured with screws. During the installation of the cover plate 200, the pressing and limiting plates 223 inside the multiple connecting shells 220 will adaptively adjust and press against the cables due to the action of springs 222. This better limits and presses against cables of various thicknesses. This method of dispersed cable limiting reduces the stacking and obstruction of cables, facilitates heat dissipation, and enhances the practicality of the device.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A fire-resistant trough, comprising a main body (100) and a cover plate (200), characterized in that: The inner wall of the main body (100) is provided with a cable tray (120), a heat dissipation component is fixedly installed at the bottom of the main body (100), and a pressure limiting component is provided at the bottom of the cover plate (200). The heat dissipation component includes a base (130) installed at the bottom of the main body (100), and the pressure limiting component includes a connecting plate (210) installed at the bottom of the cover plate (200).

2. The fire-resistant trough box according to claim 1, characterized in that: The cable tray (120) is installed at the top end and the bottom end of the main body (100), and a heat dissipation vent (110) is also provided on the top of the main body (100).

3. A fire-resistant trough box according to claim 2, characterized in that: The base (130) has heat dissipation vents (140) on both sides of its outer wall. The base (130) also has heat-melting support strips (150) attached to both sides of its outer wall. Fireproof shielding plates (160) are attached to the ends of the multiple heat-melting support strips (150).

4. A fire-resistant trough box according to claim 3, characterized in that: The outer walls on both sides of the base (130) are also provided with guide grooves, and multiple fireproof shielding plates (160) are slidably connected to the outer walls on both sides of the base (130) through the guide grooves.

5. A fire-resistant trough box according to claim 4, characterized in that: The multiple connecting plates (210) are respectively screwed to the front end and the end of the bottom of the cover plate (200), and the bottom of the multiple connecting plates (210) is also provided with a connecting shell (220).

6. A fire-resistant trough box according to claim 5, characterized in that: A mounting plate (221) is provided on the top of each of the multiple connecting shells (220), a spring (222) is connected to the bottom of the mounting plate (221), and a pressing limit plate (223) is connected to the end of the spring (222).

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