Cable trench fire prevention device and cable trench fire prevention method

Abstract

The present invention discloses a cable trench fire prevention device and a cable trench fire prevention method. The cable trench fire prevention device includes a base with a wiring trough, a plurality of barrier components, and a trigger; the plurality of barrier components are arranged at intervals in the wiring trough; each barrier component includes a first partition, a second partition, a third partition, and a fourth partition; the first partition, the second partition, the third partition, and the fourth partition are all rotatably installed in the wiring trough; when the barrier component is in an open state, the first partition and the second partition are arranged at intervals and a first wiring channel is formed between the first partition and the second partition, and the third partition and the fourth partition are arranged at intervals and a second wiring channel is formed between the third partition and the fourth partition; when the barrier component is in a closed state, the first partition and the second partition are connected, the third partition and the fourth partition are connected, and the first partition, the second partition, the third partition, and the fourth partition are jointly enclosed to form a first isolation area. The cable trench fire prevention device of the present invention has high installation efficiency and low maintenance and replacement costs.

Description

Technical Field

[0001] The present invention relates to the technical field of power facilities, and in particular to a cable trench fire prevention device and a cable trench fire prevention method. Background Art

[0002] In current power facilities, some cables are laid through cable trenches. In order to improve the safety of the cables, fire walls are generally built in the cable trenches for fire protection. When building the fire walls, bricklayers need to prepare materials such as bricks and prefabricated cement. During the wall-building process, cable holes need to be set in the bricks and / or cement only for the cables to pass through. The process of setting up the fire walls is relatively complicated. In addition, when performing maintenance and replacement of cables, the fire walls made of bricks and cement need to be completely dismantled. After the maintenance and replacement of the cables, new fire walls need to be re-installed. The installation efficiency of the fire walls is low and the maintenance and replacement costs are high, which is inconvenient for the maintenance and replacement of cables. Summary of the Invention

[0003] The purpose of the embodiments of the present invention is to provide a cable trench fire prevention device and a cable trench fire prevention method, which improves installation efficiency and reduces maintenance and replacement costs.

[0004] To achieve the above object, the present invention adopts the following technical solutions:

[0005] In one aspect, a cable trench fire prevention device is provided, comprising:

[0006] The base has a wiring groove extending along a predetermined path; the wiring groove has a first inner side wall and a second inner side wall arranged opposite to each other;

[0007] A barrier component; there are multiple barrier components, and the multiple barrier components are arranged in the wiring groove at intervals along the predetermined path, and each barrier component has an open state and a closed state;

[0008] as well as

[0009] A trigger, for driving the barrier component to switch between an open state and a closed state; there are multiple triggers corresponding to the multiple barrier components;

[0010] Each of the barrier assemblies includes a first partition, a second partition, a third partition, and a fourth partition; the first partition and the third partition are rotatably mounted on the first inner side wall, and the second partition and the fourth partition are rotatably mounted on the second inner side wall;

[0011] When the barrier assembly is in the open state, the first partition and the second partition are spaced apart and a first wiring channel is formed between the first partition and the second partition, the third partition and the fourth partition are spaced apart and a second wiring channel is formed between the third partition and the fourth partition, and the first wiring channel is connected to the second wiring channel in sequence;

[0012] When the barrier assembly is in the closed state, the first partition is connected to the second partition, the third partition is connected to the fourth partition, the first partition, the second partition, the third partition, and the fourth partition together form a first isolation area, and a second isolation area is formed between adjacent barrier assemblies.

[0013] Optionally, each of the first isolation zones is rotatably mounted with a first loading plate; the first loading plate has a loading slot for loading fire extinguishing materials; a plurality of first partition beams and second partition beams alternately arranged along the predetermined path are provided in the wiring slot, each of the first partition beams and each of the second partition beams is located above each of the barrier components, the plurality of first partition beams, the plurality of first partition seats, and the plurality of second partition seats correspond one to one, and the plurality of second partition beams, the plurality of third partition seats, and the plurality of fourth partition seats correspond one to one;

[0014] When the blocking assembly is in the open state, the first partition and / or the second partition and / or the third partition and / or the fourth partition are located on the rotation path of the first loading plate, and the first loading plate abuts against the upper ends of the first partition and / or the second partition and / or the third partition and / or the fourth partition;

[0015] When the barrier assembly is in the closed state, the first partition and / or the second partition and / or the third partition and / or the fourth partition are separated from the rotation path of the first loading plate, the upper end of the first partition and the upper end of the second partition are both in contact with the first partition beam, the upper end of the third partition and the upper end of the fourth partition are both in contact with the second partition beam, and the first loading plate is rotated downward to allow the fire extinguishing material to fall from the loading slot into the first isolation area.

[0016] Optionally, the first partition includes a first base plate rotatably mounted on the first inner side wall and a first slide plate slidably mounted on the first base plate; the second partition includes a second base plate rotatably mounted on the second inner side wall and a second slide plate slidably mounted on the second base plate; the third partition includes a third base plate rotatably mounted on the first inner side wall and a third slide plate slidably mounted on the third base plate; the fourth partition includes a fourth base plate rotatably mounted on the second inner side wall and a fourth slide plate slidably mounted on the fourth base plate;

[0017] When the blocking assembly is in the open state, the first slide and the second slide are separated to form the first wiring channel, and the third slide and the fourth slide are separated to form the second wiring channel; when the blocking assembly is in the closed state, the first slide abuts against the second slide, and the third slide abuts against the fourth slide.

[0018] Optionally, the first partition further comprises a first cutter provided on the first slide; the second partition further comprises a second cutter provided on the second slide; the third partition further comprises a third cutter provided on the third slide; the fourth partition further comprises a fourth cutter provided on the fourth slide;

[0019] When the blocking assembly is in the closed state, the blade of the first cutter abuts against the blade of the second cutter, and the blade of the third cutter abuts against the blade of the fourth cutter.

[0020] Optionally, there are two first loading plates in each first isolation area, one of which is rotatably mounted on the first inner side wall, and the other is rotatably mounted on the second inner side wall; when the barrier assembly is in the open state, one of the first loading plates abuts against the upper ends of the first partition and the third partition, and the other first loading plate abuts against the upper ends of the second partition and the fourth partition, and the two first loading plates abut against each other.

[0021] Optionally, each of the triggers includes a driving member installed on the base and a temperature sensor installed on the base; the first partition, the second partition, the third partition, and the fourth partition are all transmission-connected to the output end of the driving member, and the temperature sensor is electrically connected to the driving member.

[0022] Optionally, each trigger includes a cable and a torsion spring; the first partition, the second partition, the third partition, and the fourth partition are all pivotally connected to the base through a pivot, and the torsion spring is sleeved on the pivot, one end of the torsion spring is connected to the first partition or the second partition or the third partition or the fourth partition, and the other end of the torsion spring is connected to the base, the first partition of any blocking assembly is connected to the third partition or the fourth partition through the cable, and the second partition of any blocking assembly is connected to the third partition or the fourth partition of the adjacent blocking assembly through the cable.

[0023] Optionally, the cable trench fire protection device also includes a top cover; the wiring trough has an upwardly arranged installation slot, the top cover is installed on the base and covers the installation slot of the wiring trough, the top cover and the inner wall of the wiring trough together enclose a wiring cavity, and each of the triggers and each of the barrier components are located in the wiring cavity.

[0024] Optionally, a first monitoring module and a first sending module are installed in each first isolation area, and the first monitoring module and the first sending module are electrically connected.

[0025] On the other hand, a cable trench fire prevention method is provided, based on the above-mentioned cable trench fire prevention device, comprising the following steps:

[0026] S10: The base is installed in a cable trench, and each barrier component and each trigger is installed in the wiring trench of the base, and each trigger drives each barrier component to switch to the open state;

[0027] S20: Laying the cable in the wiring trough, the cable passing through each of the first wiring channels and each of the second wiring channels along the predetermined path;

[0028] S30: When a fire occurs in the cable in the wiring trough, one or two of the barrier components close to the fire point are switched to a closed state under the drive of the trigger to isolate the fire point from the first isolation zone or the second isolation zone.

[0029] The beneficial effects of the present invention are as follows: the cable trench fire prevention device includes a trigger and multiple barrier components. When the cable in the cable trench catches fire, the trigger is used to drive the multiple barrier components to separate the wiring trough of the base into a first isolation area and a second isolation area, thereby isolating the fire source and achieving fire prevention. The multiple barrier components are simple to install and highly efficient, and can be reused. By switching the barrier components to the open state, the cable can be maintained and replaced, thereby reducing the maintenance and replacement costs of the cable.

[0030] This cable trench fire prevention method adopts the above-mentioned cable trench fire prevention device, which is not only simple to install, highly efficient, and has good fire prevention performance, but also convenient for cable maintenance and replacement, thereby reducing the maintenance and replacement costs of the cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The present invention will be described in further detail below with reference to the accompanying drawings and examples.

[0032] Figure 1 This is a structural diagram of the cable trench fire protection device;

[0033] Figure 2 It is a schematic diagram of the structure of the base and the barrier component;

[0034] Figure 3 for Figure 2 A partial cross-sectional view of the barrier assembly in the open state;

[0035] Figure 4 for Figure 2 A partial cross-sectional view of the barrier assembly in a closed state;

[0036] Figure 5 A schematic diagram of the coordination of the barrier assembly, the first partition beam, and the second partition beam;

[0037] Figure 6 This is a schematic diagram of the coordination of the first partition, the second partition, and the first partition beam;

[0038] Figure 7 Schematic diagram of the structure of the first compartment;

[0039] Figure 8 This is an exploded view of the first bay;

[0040] Figure 9 is a side view of the first compartment;

[0041] Figure 10 Schematic diagram of the internal structure of the first compartment;

[0042] Figure 11 Schematic diagram of the structure of the first loading plate.

[0043] Description of the accompanying drawings:

[0044] 11. Base; 12. Blocking assembly; 14. First loading plate; 15. First partition beam; 16. Second partition beam; 17. First magnetic plate; 18. Pivot;

[0045] 111, wiring trough; 112, first inner side wall; 113, second inner side wall; 114, mounting notch; 115, first isolation area; 116, second isolation area;

[0046] 121, first compartment; 122, second compartment; 123, third compartment; 124, fourth compartment; 125, first wiring channel; 126, second wiring channel;

[0047] 131. Cable;

[0048] 141. Loading chute;

[0049] 12101, first substrate; 12102, first slide; 12103, first slide groove; 12104, first cutter; 12105, first positioning groove; 12106, guide block; 12107, cutting hole; 12108, knife groove; 12109, trigger groove; 12110, lifting groove; 12111, ejection groove; 12112, trigger block; 12113, unlocking bar; 12114, locking lever; 12115, return spring; 12116, ejection spring; 12117, locking spring; 12118, locking spring; 12119, locking spring; 1220, locking spring; 12210, locking spring; 12211 118, extrusion slope; 12119, reset rod; 12130, limit plate; 12131, extrusion plate; 12132, ejection rod; 12133, locking surface; 12134, guide groove; 12135, push rod; 12136, push plate; 12137, positioning plate; 12138, ejection spring; 12139, lifting rod; 12140, pressing spring; 12141, pressing rod; 12142, cutting groove; 12143, guide groove; 12144, cutting spring; 12145, pressing groove;

[0050] 12201, second substrate; 12202, second slide plate; 12203, second slide groove; 12204, second cutter; 12205, second positioning groove. DETAILED DESCRIPTION

[0051] To make the technical problems solved, the technical solutions adopted, and the technical effects achieved by the present invention more clearly understood, the technical solutions of the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. It is apparent that the described embodiments are only some of the embodiments of the present invention, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort shall fall within the scope of protection of the present invention.

[0052] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "fixed," "connected," "connected," "abutted," "clamped," etc. should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediate medium; and may refer to internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention in specific contexts.

[0053] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Furthermore, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0054] In the description herein, it should be understood that terms such as "upper," "lower," "left," and "right" are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely for ease of description and simplified operation. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0055] In this specification, reference to terms such as "one embodiment" or "example" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0056] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0057] It should be noted that before discussing exemplary embodiments in more detail, some exemplary embodiments are described as processes or methods depicted as flow charts. Although the flow charts describe the various operations (or steps) as sequential processes, many of the operations therein can be implemented in parallel, concurrently, or simultaneously. In addition, the order of the various operations can be rearranged. The process can be terminated when its operation is completed, but can also have additional steps not included in the accompanying drawings. The process can correspond to a method, function, procedure, subroutine, subprogram, etc.

[0058] Unless specifically stated or defined otherwise, the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0059] For the convenience of description, unless otherwise specified, the up and down directions mentioned below are the same as Figure 3 The up and down direction of the body is consistent with the front and back direction mentioned below. Figure 3 The left and right directions of the Figure 8 The left and right directions are consistent.

[0060] like Figures 1 to 6 As shown, this embodiment provides a cable trench fire prevention device, including a base 11, a barrier assembly 12, and a trigger. The base 11 has a wiring groove 111 extending along a predetermined path. The predetermined path is Figure 3 The path extending in the left-right direction of the cable trench itself, that is, extending along the front-to-back direction of the base 11 or the cable trench. The predetermined path is the extension path of the cable trench. The base 11 is in the shape of an elongated strip. The cross section of the base 11 along the length direction is U-shaped. The base 11 is used to be laid on the cable trench. According to the length of the cable trench, multiple bases 11 can be laid in each cable trench. The bases 11 are arranged in sequence along the extension path of the cable trench. The multiple bases 11 can be connected or abutted in sequence, or can be arranged at intervals. Compared with building a fire wall with cement bricks in the cable trench, the cable trench fire prevention device of this embodiment is more convenient and flexible to install.

[0061] Wiring trough 111 has a first inner wall 112 and a second inner wall 113 oppositely disposed. Both first and second inner walls 112, 113 extend along a predetermined path and are parallel to the predetermined path. First and second inner walls 112, 113 are spaced apart in the left-right direction. Wiring trough 111 is used to pass underground cables through, thereby enabling the laying of underground cables.

[0062] Multiple barrier assemblies 12 are arranged in a predetermined path in the wiring trough 111 at intervals. Each barrier assemblies 12 has an open state and a closed state. A trigger is mounted in the wiring trough 111 and is used to switch the barrier assemblies 12 between the open and closed states. There are multiple triggers, each corresponding to one of the barrier assemblies 12.

[0063] Each barrier assembly 12 includes a first partition 121, a second partition 122, a third partition 123, and a fourth partition 124. The first partition 121, the second partition 122, the third partition 123, and the fourth partition 124 are all made of fireproof materials and have the characteristics of high temperature resistance, heat resistance, and flame retardancy. The first partition 121, the second partition 122, the third partition 123, and the fourth partition 124 are all located in the wiring groove 111. The first partition 121 and the third partition 123 are all rotatably mounted on the first inner side wall 112, and the second partition 122 and the fourth partition 124 are all rotatably mounted on the second inner side wall 113. Specifically, the first partition 121 and the third partition 123 are all rotatably mounted on the first inner side wall 112 via a pivot 18, and the second partition 122 and the fourth partition 124 are all rotatably mounted on the second inner side wall 113 via a pivot 18. The first partitions 121 and the second partitions 122 are arranged at intervals along the left-right direction, and the third partitions 123 and the fourth partitions 124 are arranged at intervals along the left-right direction.

[0064] When the barrier assembly 12 is in the open state, the first partition 121 and the second partition 122 are arranged at intervals and a first wiring channel 125 is formed between the first partition 121 and the second partition 122, the third partition 123 and the fourth partition 124 are arranged at intervals and a second wiring channel 126 is formed between the third partition 123 and the fourth partition 124, the first wiring channel 125 and the second wiring channel 126 are connected in sequence, and the first wiring channel 125 and the second wiring channel 126 can allow cables to pass through, thereby realizing cable laying.

[0065] When the barrier assembly 12 is in a closed state, the first partition 121 and the second partition 122 are connected, the third partition 123 and the fourth partition 124 are connected, and the first partition 121, the second partition 122, the third partition 123, and the fourth partition 124 together enclose a first isolation area 115, and a second isolation area 116 is formed between adjacent barrier assemblies 12.

[0066] When the cable trench fire prevention device is installed, the base 11 is installed in the cable trench, and all the barrier components 12 are in the open state. Then the cable is laid in the wiring trough 111, and the cable passes through the first wiring channel 125 and the second wiring channel 126 to complete the laying of the cable. When the cable in the cable trench catches fire, the trigger is triggered and drives the barrier component 12 to switch to the closed state. The first partition 121 and the second partition 122 are connected to close the first wiring channel 125, and the third partition 123 and the fourth partition 124 are connected to close the second wiring channel 126. The first partition 121, the second partition 122, the third partition 123 and the fourth partition 124 will reserve holes for the cable to pass through. The cable completely covers the hole, and the inner wall of the hole abuts and clamps the cable, so that the wiring trough 111 is divided into multiple independent first isolation areas 115 and second isolation areas 116. Specifically, when a fire occurs between adjacent barrier assemblies 12, or when a fire occurs in the area enclosed by any barrier assembly 12, including the first partition 121, the second partition 122, the third partition 123, and the fourth partition 124, the trigger can be activated, causing the barrier assemblies 12 on both sides of the fire area to switch to a closed state. The remaining barrier assemblies 12 away from the fire area do not need to be switched to a closed state. In this way, the cables in the fire area are isolated by the barrier assembly 12 to prevent the spread of fire on the cables. In addition, when the trigger is triggered, the trigger can also send a signal and locate the maintenance personnel, so that the maintenance personnel can quickly find the fire point and repair it. After the repair is completed, the barrier assembly 12 can be switched to an open state for reuse. Compared with the existing method of demolishing the cement wall, the present application can be reused, saving costs and avoiding the need to rebuild the wall, making maintenance and installation more efficient.

[0067] In this way, the cable trench fire prevention device of the present application uses a trigger to drive multiple barrier components 12 to separate the wiring groove 111 of the base 11 into a first isolation area 115 and a second isolation area 116, thereby isolating the fire source and achieving fire prevention. The multiple barrier components 12 are simple to install and highly efficient, and can be reused. By switching the barrier components 12 to the open state, the cable can be maintained and replaced, reducing the maintenance and replacement costs of the cable.

[0068] In one embodiment, each first isolation zone 115 is rotatably mounted with a first loading plate 14. The first loading plate 14 has a loading slot 141 for loading fire extinguishing materials. Fire extinguishing materials include flame retardants such as sand and fire extinguishing agents. Sand can be obtained locally near the cable trench to save costs. The wiring trench 111 is provided with a plurality of first partition beams 15 and second partition beams 16 arranged alternately along a predetermined path. Each first partition beam 15 and each second partition beam 16 is located above each barrier assembly 12. The plurality of first partition beams 15, the plurality of first partition seats 121, and the plurality of second partition seats 122 correspond one to one, and the plurality of second partition beams 16, the plurality of third partition seats 123, and the plurality of fourth partition seats 124 correspond one to one.

[0069] When the barrier assembly 12 is in the open state, the first partition 121 and / or the second partition 122 and / or the third partition 123 and / or the fourth partition 124 are located on the rotation path of the first loading plate 14, and the first loading plate 14 abuts against the upper ends of the first partition 121 and / or the second partition 122 and / or the third partition 123 and / or the fourth partition 124. Specifically, when the barrier assembly 12 is in the open state, the first partition 121, the second partition 122, the third partition 123, or the fourth partition 124 can be used to support the first loading plate 14 to prevent it from rotating downward, or two or more of the first partition 121, the second partition 122, the third partition 123, and the fourth partition 124 can be used together to provide support. In this embodiment, first loading plates 14 are mounted on both the first inner sidewall 112 and the second inner sidewall 113. The first and third partitions 121 and 123 jointly support one of the first loading plates 14, while the second and fourth partitions 122 and 124 jointly support the other first loading plate 14. When the barrier assembly 12 is in the open position, the loading slot 141 located on the upper surface of the first loading plate 14 can accommodate fire extinguishing materials without them falling into the first isolation zone 115.

[0070] When the barrier assembly 12 is in the closed state, the first partition 121 and / or the second partition 122 and / or the third partition 123 and / or the fourth partition 124 are out of the rotation path of the first loading plate 14. That is, the first partition 121, the second partition 122, the third partition 123, and the fourth partition 124 are all out of the rotation path of the first loading plate 14. With no support underneath the first loading plate 14, the first loading plate 14 rotates downward under the action of gravity. A loading slot 141 is provided at the end of the first loading plate 14 away from the first inner sidewall 112 or the second inner sidewall 113. Fire extinguishing materials fall through the slot 141 into the first isolation zone 115. The upper ends of the first partition 121 and the second partition 122 abut against the first partition beam 15, and the upper ends of the third partition 123 and the upper ends of the fourth partition 124 abut against the second partition beam 16, thereby completely isolating the first isolation zone 115 from the second isolation zone 116.

[0071] It is understood that a second loading plate can be installed in each second isolation zone 116. When a cable in the second isolation zone 116 catches fire, the fire extinguisher on the second loading plate can fall onto the cable in the second isolation zone 116, thereby extinguishing the fire. Specifically, the second loading plate is also rotatably installed, and the installation and number of the second loading plates can be similar to those of the first loading plates 14. When the barrier assembly 12 is in the open state, the second loading plate is arranged parallel to and above the barrier assembly 12. The second loading plate is supported by support columns. When the barrier assembly 12 is in the closed state, the trigger levers provided on the first partition 121 and / or the second partition 122 and / or the third partition 123 and / or the fourth partition 124 push down the support columns, causing the second loading plate to rotate downward under the action of gravity, and the fire extinguisher on the second loading plate falls onto the cable in the second isolation zone 116, thereby extinguishing the fire. When the first loading plate 14 and the second loading plate are located above the barrier assembly 12 and the barrier assembly 12 is in the open state, the notch of the loading slot 141 is just above the cable. When the first loading plate 14 and the second loading plate are rotated downward, the fire extinguishing material can be accurately poured onto the burning cable.

[0072] Optionally, a first magnetic plate 17 is slidably provided on both the first partition beam 15 and the second partition beam 16, and the first magnetic plate 17 slides up and down. Under normal conditions, the first magnetic plate 17 has an interference fit with the first partition beam 15 or the second partition beam 16, and the first magnetic plate 17 is retained on the first partition beam 15 or the second partition beam 16. A first positioning groove 12105 is provided on the upper side surface of the first partition seat 121, a second positioning groove 12205 is provided on the upper side surface of the second partition seat 122, a third positioning groove is provided on the upper side surface of the third partition seat 123, and a fourth positioning groove is provided on the upper side surface of the fourth partition seat 124. Second magnetic plates are provided in the first positioning groove 12105, the second positioning groove 12205, the third positioning groove, and the fourth positioning groove. When the barrier assembly 12 is in the closed state, the second magnetic plate attracts the first magnetic plate 17, and the first magnetic plate 17 on the first partition beam 15 snaps downward into the first positioning slot 12105 and the second positioning slot 12205. The first magnetic plate 17 on the second partition beam 16 snaps downward into the third positioning slot and the fourth positioning slot, thereby locking the first partition seat 121, the second partition seat 122, the third partition seat 123, and the fourth partition seat 124, thereby improving the sealing performance of the first isolation area 115 and the second isolation area 116. To switch the barrier assembly 12 to the open state, the first magnetic plate 17 is driven away from the second magnetic plate, and then the first partition seat 121, the second partition seat 122, the third partition seat 123, and the fourth partition seat 124 are rotated.

[0073] It can be understood that a third magnetic plate can be provided on the first partition beam 15 and the second partition beam 16. When the barrier assembly 12 is in an open state, the adsorption force between the third magnetic plate and the first magnetic plate 17 overcomes the gravity of the first magnetic plate 17, causing the first magnetic plate 17 to slide upward. When the barrier assembly 12 is in a closed state, the sum of the gravity of the first magnetic plate 17 plus the adsorption force between the third magnetic plate and the first magnetic plate 17 is less than the adsorption force of the second magnetic plate on the first magnetic plate 17, causing the first magnetic plate 17 to slide downward.

[0074] like Figures 5 to 11 As shown, further, the first partition 121 includes a first base plate 12101 rotatably mounted on the first inner side wall 112 and a first slide 12102 slidably mounted on the first base plate 12101. A first slide groove 12103 is defined on the first base plate 12101, and the first slide 12102 is horizontally slidably mounted in the first slide groove 12103. The second partition 122 includes a second base plate 12201 rotatably mounted on the second inner side wall 113 and a second slide 12202 slidably mounted in the second slide groove 12203. The second base plate 12201 includes a second slide groove 12203, and the second slide 12202 is horizontally slidably mounted in the second slide groove 12203. The third partition 123 includes a third base plate rotatably mounted on the first inner side wall 112 and a third slide slidably mounted on the third base plate. A third slide groove is defined on the third base plate, and the first slide 12102 is horizontally slidably mounted in the third slide groove. The fourth partition 124 includes a fourth base plate rotatably mounted on the second inner side wall 113 and a fourth slide plate slidably mounted on the fourth base plate. The fourth base plate has a fourth slide groove, and the fourth slide plate is horizontally slidably mounted in the fourth slide groove.

[0075] When the barrier assembly 12 is in the open state, the first and second slides 12102 and 12202 separate to form a first wiring channel 125, and the third and fourth slides separate to form a second wiring channel 126. When the barrier assembly 12 is in the closed state, the first and second slides 12102 and 12202 abut, and the third and fourth slides abut. Pre-cut holes 12107 are provided in the first, second, third, and fourth slides. When the barrier assembly 12 is in the closed state, these cut holes 12107 allow cables to pass through, allowing the first and second slides 12102 and the third and fourth slides to abut. Cut holes 12107 are quarter-circular arc grooves.

[0076] In one embodiment, the first partition 121 further includes a first cutter 12104 disposed on the first slide 12102. The second partition 122 further includes a second cutter 12204 disposed on the second slide 12202. The third partition 123 further includes a third cutter disposed on the third slide. The fourth partition 124 further includes a fourth cutter disposed on the fourth slide. When the barrier assembly 12 is in the closed state, the blade of the first cutter 12104 abuts the blade of the second cutter 12204, and the blade of the third cutter abuts the blade of the fourth cutter. The first cutter 12104 is located at the cutting hole 12107 on the first slide 12102, the second cutter 12204 is located at the cutting hole 12107 on the second slide 12202, the third cutter is located at the cutting hole 12107 on the third slide, and the fourth cutter is located at the cutting hole 12107 on the fourth slide. When a cable catches fire, the first cutter 12104 abuts the second cutter 12204, and the third cutter abuts the fourth cutter to cut and separate the cable, effectively preventing the fire from spreading along the cable if the fire is too large. During subsequent repairs, existing wiring equipment and wiring technology can be used to splice and repair the cable.

[0077] Optionally, there are two first loading plates 14 in each first isolation zone 115, one of which is rotatably mounted on the first inner sidewall 112, and the other is rotatably mounted on the second inner sidewall 113. When the barrier assembly 12 is in the open state, one of the first loading plates 14 abuts against the upper ends of the first and third partitions 121, 123, and the other abuts against the upper ends of the second and fourth partitions 122, 124. The two first loading plates 14 abut against each other, and the loading slots 141 on the two first loading plates 14 are connected and located directly above the cable. When the barrier assembly 12 is switched to the closed state, the loading slots 141 on the two first loading plates 14 face the cable, allowing the fire extinguishing material to accurately cover the cable.

[0078] Optionally, the first cutter 12104, the second cutter 12204, the third cutter, and the fourth cutter all have a first blade and a second blade, and the first blade and the second blade are spaced apart along the direction of the cable. In this way, the burning cable segment can be separated more thoroughly from other non-burning cable segments.

[0079] In one embodiment, the first cutter 12104, the second cutter 12204, the third cutter, and the fourth cutter are each provided with a guide block 12106, and the first slide 12102, the second slide 12202, the third slide, and the fourth slide are each provided with a guide groove 12143, a knife groove 12108, and a cutting hole 12107. The guide block 12106 cooperates with the guide groove 12143 to facilitate installation of the first cutter 12104, the second cutter 12204, the third cutter, and the fourth cutter. The first cutter 12104, the second cutter 12204, the third cutter, and the fourth cutter can each slide from the knife groove 12108 to the cutting hole 12107.

[0080] Furthermore, the first slide 12102, the second slide 12202, the third slide, the fourth slide, the first cutter 12104, the second cutter 12204, the third cutter, and the fourth cutter of this embodiment can be automatically ejected, so that the first slide 12102 abuts against the second slide 12202, the third slide abuts against the fourth slide, the first cutter 12104 abuts against the second cutter 12204, and the third cutter abuts against the fourth cutter. This embodiment is described using the structure and triggering method of the first partition 121 as an example. The structure and triggering method of the second partition 122, the third partition 123, and the fourth partition 124 are the same as those of the first partition 121, and will not be repeated here.

[0081] Specific, key reference Figure 10The first partition 121 also includes a trigger block 12112, an unlocking bar 12113, a locking rod 12114 with an extrusion slope 12118, a reset spring 12115, an ejection spring 12116, a locking spring 12117, a reset rod 12119, a limit plate 12130, an extrusion plate 12131, and an ejection rod 12132 with a locking surface 12133. The first base 11 is provided with a trigger groove 12109, a lifting groove 12110, and a pushing groove 12111; the trigger groove 12109 extends horizontally left and right, there are two lifting grooves 12110 and both extend vertically, the trigger groove 12109 is located between the two lifting grooves 12110, and the two lifting grooves 12110 are both connected to the trigger groove 12109, the pushing groove 12111 extends horizontally, there are two pushing grooves 12111 and they correspond one to one with the two lifting grooves 12110, and the lifting groove 12110 is located between the pushing groove 12111 and the trigger groove 12109. One end of the trigger block 12112 is slidably arranged in the trigger groove 12109 and is spaced apart with two unlocking bars 12113. One end of the trigger block 12112 is located outside the first base 11 and is spaced apart from the pivot 18 on the first base 11 along the extension direction of the wiring groove 111. The limiting plate 12130 is arranged on the inner wall of the trigger groove 12109, the extrusion plate 12131 is installed on the trigger block 12112, and the return spring 12115 is clamped between the extrusion plate 12131 and the limiting plate 12130. 130, a locking rod 12114 is slidably mounted in the lifting groove 12110. One end of the locking rod 12114 is provided with an extrusion slope 12118, and the other end of the locking rod 12114 moves in a direction toward or away from the ejection groove 12111. The two locking rods 12114 with the extrusion slope 12118 are connected by a locking spring 12117. The locking spring 12117 applies elastic force to drive the two locking rods 12114 away from each other in the vertical direction. One end of the ejection rod 12132 is slidably mounted in the ejection groove 12111 and is connected to the first base 11 via an ejection spring 12116. The other end of the ejection rod 12132 is connected to the first slide 12102.

[0082] In this way, when the barrier assembly 12 is in the open state, the first partition seat 121 is in the normal state, the ejection spring 12116 is compressed, and the locking spring 12117 applies elastic force to make the two locking rods 12114 move away from each other in the vertical direction. The locking rod 12114 abuts against the locking surface 12133 and is located on the moving path of the locking surface 12133 to prevent the ejection spring 12116 from resetting. Under the action of the reset spring 12115, one end of the trigger block 12112 is located on the outside of the first base 11.

[0083] When the barrier assembly 12 is in the closed state, the return spring 12115 is compressed, and the unlocking bar 12113 on the trigger block 12112 approaches the extrusion slope 12118. When the unlocking bar 12113 abuts the extrusion slope 12118, it drives the two locking rods 12114 toward each other in the vertical direction, thereby causing the locking rods 12114 to move away from the movement path of the locking surface 12133. Under the elastic action of the ejection spring 12116, the ejection rod 12132 pushes out the first slide 12102. Similarly, when the second partition 122, the third partition 123, and the fourth partition 124 also undergo the above-mentioned triggering process, the first slide 12102 abuts against the second slide 12202, and the third slide abuts against the fourth slide.

[0084] Both the ejection rod 12132 and the locking rod 12114 are connected to a reset rod 12119. One end of the reset rod 12119 extends through a slot in the first base 11 and out of the first base 11. When maintenance is complete and the barrier assembly 12 needs to be switched back to the open position, the trigger block 12112 is reset by the reset spring 12115. Pushing the reset rod 12119 resets the ejection rod 12132 and the locking rod 12114.

[0085] In addition, when the barrier assembly 12 is switched to the closed state, that is, after the first slide 12102 abuts the second slide 12202 and the third slide abuts the fourth slide, the first cutter 12104, the second cutter 12204, the third cutter, and the fourth cutter can automatically pop out, so that the first cutter 12104 abuts the second cutter 12204 and the third cutter abuts the fourth cutter, completing the cable cutting. Specifically, the first partition 121 also includes a push rod 12135, a push plate 12136, a positioning plate 12137, an ejection spring 12138, a lifting rod 12139, a downward pressure spring 12140, a downward pressure rod 12141, and a cutting spring 12144. The first slide 12102 is formed with a guide groove 12134 and a downward pressure groove 12145. The guide groove 12134 extends horizontally, while the downward pressure groove 12145 extends vertically, connecting the guide groove 12134 and the downward pressure groove 12145. A cutting groove 12142 is formed on the upper end surface of the first cutter 12104, connecting to the downward pressure groove 12145. The left side of the first cutter 12104 is connected to the first slide 12102 via a cutting spring 12144. A downward pressure rod 12141 slides up and down in the downward pressure groove 12145, and the upper end of the downward pressure rod 12141 is connected to the first slide 12102 via a downward pressure spring 12140. A positioning plate 12137 is provided on the inner wall of the guide groove 12134. One end of the push rod 12135 slides into the guide groove 12134, while the other end of the push rod 12135 is positioned outside the first slide 12102. A push plate 12136 is mounted on the push rod 12135, and a push spring 12138 is positioned between the push plate 12136 and the positioning plate 12137. Thus, the elastic force of the push spring 12138 forces one end of the push rod 12135 to be positioned outside the first slide 12102. Under the action of the downward pressure spring 12140, the downward pressure rod 12141 engages the cutting groove 12142, preventing the first cutter 12104 from sliding toward the cutting hole 12107. The cutting spring 12144 forces the first cutter 12104 to move closer to the cutting hole 12107.

[0086] When the first slide 12102 abuts against the second slide 12202 and the third slide abuts against the fourth slide, the push rod 12135 on the first slide 12102 abuts against the push rod 12135 on the second slide 12202, and the push rod 12135 on the third slide abuts against the push rod 12135 on the fourth slide, so that the push rod 12135 moves toward the direction close to the lower pressure rod 12141, and the push rod 12135 pushes the lower inclined surface of the lower pressure rod 12141 to move upward, and the lower end of the lower pressure rod 12141 leaves the cutting groove 12142, and under the action of the cutting spring 12144, the first cutter 12104 pops out to cut the cable.

[0087] Thus, when the barrier assembly 12 is switched to the closed state, the first base 11 and the third base 11 abut against the first inner sidewall 112, and the second base 11 and the fourth base 11 abut against the second inner sidewall 113. The first slide 12102, the second slide 12202, the third slide, and the fourth slide are triggered, causing the first slide 12102 to abut against the second slide 12202, and the third slide to abut against the fourth slide. After the first slide 12102 abuts against the second slide 12202, and the third slide abuts against the fourth slide, the push rod 12135 is triggered, causing the first cutter 12104, the second cutter 12204, the third cutter, and the fourth cutter to automatically pop out, thereby causing the first cutter 12104 to abut against the second cutter 12204, and the third cutter to abut against the fourth cutter, completing the cutting and separation of the cable.

[0088] A lifting rod 12139 is provided on the lower pressure rod 12141. When the maintenance is completed, the barrier assembly 12 needs to be switched back to the open state. The lifting rod 12139 is driven to slide upward by the lifting rod 12139, pushing the first cutter 12104 to reset to the untriggered state.

[0089] In one embodiment, each trigger includes a driving member installed on the base 11 and a temperature sensor installed on the base 11. The first partition 121, the second partition 122, the third partition 123, and the fourth partition 124 are all connected to the output end of the driving member by transmission, and the temperature sensor is electrically connected to the driving member. When the cables in the first isolation area 115 and the second isolation area 116 catch fire, the temperature will rise. When the temperature sensor detects that the temperature rises to a set standard value, the driving member drives the first partition 121, the second partition 122, the third partition 123, and the fourth partition 124 to rotate. The driving member is a motor, a cylinder, etc. The first partition 121, the second partition 122, the third partition 123, and the fourth partition 124 can be driven by different driving members respectively, or can be driven by the same driving member and transmission member.

[0090] In other embodiments, the temperature sensor may also function as a smoke detector.

[0091] In one embodiment, each trigger includes a cable 131 and a torsion spring. The first, second, third, and fourth partitions 121, 122, 123, and 124 are all pivotally connected to the base 11 via a pivot 18. A torsion spring is sleeved on the pivot 18, with one end of the torsion spring connected to the first, second, third, and fourth partitions 121, 122, 123, and 124, and the other end of the torsion spring connected to the base 11. The first partition 121 of any barrier assembly 12 is connected to the third or fourth partition 123, 124 via the cable 131, and the second partition 122 of any barrier assembly 12 is connected to the third or fourth partition 123, 124 of the adjacent barrier assembly 12 via the cable 131. The torsion spring can exert an elastic force to cause the barrier assembly 12 to switch to the closed state. The first, second, third, and fourth partitions 121, 122, 123, and 124 are interconnected by a cable 131, which can keep the barrier assembly 12 in the open state. The cable 131 is made of flammable material. When the cable catches fire, the fire will burn the cable 131, causing the barrier assembly 12 to switch to the closed state, achieving automatic triggering.

[0092] It can be understood that each trigger can realize the rotation of the first partition 121, the second partition 122, the third partition 123, and the fourth partition 124 by setting a rope 131 and a torsion spring, and can also realize the rotation of the first partition 121, the second partition 122, the third partition 123, and the fourth partition 124 by setting a temperature sensor and a driving member. The rope 131, the torsion spring, the temperature sensor, and the driving member can also be combined together to realize the rotation of the first partition 121, the second partition 122, the third partition 123, and the fourth partition 124 to improve the sensitivity of the trigger.

[0093] In one embodiment, the pull rope 131 is an elastic band such as a rubber band. There are two pull ropes 131 and they are arranged crosswise, that is, the first partition 121 and the fourth partition 124 are connected by one of the pull ropes 131, and the second partition 122 and the third partition 123 are connected by the other pull rope 131.

[0094] Furthermore, the cable trench fire prevention device also includes a top cover. The wiring trough 111 has an upwardly disposed mounting notch 114. The top cover is mounted on the base 11 and covers the mounting notch 114 of the wiring trough 111. The top cover and the inner wall of the wiring trough 111 together enclose a wiring cavity, and each trigger and each barrier component 12 are located in the wiring cavity. Specifically, the edge of the mounting notch 114 is a first bevel, and the height of the first bevel gradually decreases in the direction approaching the wiring trough 111. The top cover has a second bevel matching the first bevel, and the first bevel is abutted against the second bevel to achieve installation of the top cover. After the top cover is installed, it can protect the barrier component 12, the first loading plate 14 and other components in the wiring trough 111 to prevent mud and sand from entering the wiring trough 111. After the top cover is installed, sand is filled on the top cover to achieve pre-embedding of the cable.

[0095] It is understandable that there are multiple bases 11, and two to three barrier components 12 are installed in each base 11, so that the base 11 will not be too long. In this way, when the length of the cable trench is moved, the installation burden can be reduced. Multiple bases 11 can be installed at the same time. When inspecting and replacing the fire protection device of the cable trench, there will not be too many parts to replace, which saves costs. It also avoids the cable trench being too long to be excavated during maintenance, that is, the entire cable trench does not need to be excavated. There are multiple top covers and they correspond one to one with the base 11. The top cover includes multiple detachably connected plates, which can abut against the adjacent first partition beam 15 and second partition beam 16 to achieve support and reduce the length of the cable trench to be excavated during maintenance.

[0096] In one embodiment, each first isolation zone 115 is equipped with a first monitoring module and a first transmitting module, which are electrically connected. The first monitoring module includes a temperature alarm and a smoke alarm, while the first transmitting module includes a radio communication module, a Bluetooth module, a satellite communication module, etc. The first monitoring module detects the starting point of the cable fire in the cable trench. Once the barrier assembly 12 is triggered, the first transmitting module transmits the relevant information to the maintenance personnel's monitoring terminal, facilitating timely repair and maintenance.

[0097] This embodiment also provides a cable trench fire prevention method. Based on the above-mentioned cable trench fire prevention device, the cable trench fire prevention method includes the following steps:

[0098] S10: The base 11 is installed in the cable trench, and each barrier component 12 and each trigger are respectively installed in the wiring groove 111 of the base 11, and each trigger drives each barrier component 12 to switch to the open state.

[0099] S20 : ​​Laying the cables in the wiring trough 111 , and passing the cables through the first wiring channels 125 and the second wiring channels 126 along a predetermined path.

[0100] S30: When the cable in the wiring trough 111 catches fire, one or two barrier components 12 close to the fire point are switched to a closed state under the drive of the trigger to isolate the fire point from the first isolation zone 115 or the second isolation zone 116.

[0101] The technical principles of the present invention have been described above with reference to specific embodiments. These descriptions are intended solely to illustrate the principles of the present invention and are not to be construed in any way as limiting the scope of protection of the present invention. Based on the explanations herein, those skilled in the art will readily conceive of other specific embodiments of the present invention without inventive effort, and such embodiments will fall within the scope of protection of the present invention.

Claims

1. A cable trench fire prevention device, characterized in that: include: The base (11) has a wiring groove (111) extending along a predetermined path; the wiring groove (111) has a first inner side wall (112) and a second inner side wall (113) arranged opposite to each other; a barrier component (12); the barrier components (12) are multiple, and the multiple barrier components (12) are arranged in the wiring groove (111) at intervals along the predetermined path, and each barrier component (12) has an open state and a closed state; Top cover; as well as a trigger for driving the barrier component (12) to switch between an open state and a closed state; the trigger is provided in plurality and corresponds one-to-one to the plurality of barrier components (12); Each of the barrier components (12) comprises a first partition (121), a second partition (122), a third partition (123), and a fourth partition (124); the first partition (121) and the third partition (123) are both rotatably mounted on the first inner side wall (112), and the second partition (122) and the fourth partition (124) are both rotatably mounted on the second inner side wall (113); When the barrier assembly (12) is in the open state, the first partition (121) and the second partition (122) are arranged at intervals, and a first wiring channel (125) is formed between the first partition (121) and the second partition (122); the third partition (123) and the fourth partition (124) are arranged at intervals, and a second wiring channel (126) is formed between the third partition (123) and the fourth partition (124); the first wiring channel (125) and the second wiring channel (126) are sequentially connected; When the barrier assembly (12) is in the closed state, the first partition (121) and the second partition (122) are connected, the third partition (123) and the fourth partition (124) are connected, the first partition (121), the second partition (122), the third partition (123), and the fourth partition (124) are jointly enclosed to form a first isolation area (115), and a second isolation area (116) is formed between adjacent barrier assemblies (12); The wiring trough (111) has an upwardly disposed mounting notch (114); the top cover is mounted on the base (11) and covers the mounting notch (114); the top cover and the inner wall of the wiring trough (111) together enclose a wiring cavity; each of the triggers and each of the barrier components (12) are located in the wiring cavity; A first monitoring module and a first sending module are installed in each first isolation area (115), and the first monitoring module and the first sending module are electrically connected.

2. The cable trench fire protection device according to claim 1, characterized in that: Each of the first isolation zones (115) is rotatably mounted with a first loading plate (14); the first loading plate (14) has a loading slot (141) for loading fire extinguishing materials; a plurality of first partition beams (15) and second partition beams (16) arranged alternately along the predetermined path are provided in the wiring slot (111); each of the first partition beams (15) and each of the second partition beams (16) are located above each of the barrier components (12); a plurality of the first partition beams (15), a plurality of the first partition seats (121), and a plurality of the second partition seats (122) correspond one to one; a plurality of the second partition beams (16), a plurality of the third partition seats (123), and a plurality of the fourth partition seats (124) correspond one to one; When the barrier assembly (12) is in the open state, the first partition (121) and / or the second partition (122) and / or the third partition (123) and / or the fourth partition (124) are located on the rotation path of the first loading plate (14), and the first loading plate (14) abuts against the upper ends of the first partition (121) and / or the second partition (122) and / or the third partition (123) and / or the fourth partition (124); When the barrier assembly (12) is in the closed state, the first partition (121) and / or the second partition (122) and / or the third partition (123) and / or the fourth partition (124) are separated from the rotation path of the first loading plate (14), the upper end of the first partition (121) and the upper end of the second partition (122) are both in contact with the first partition beam (15), the upper end of the third partition (123) and the upper end of the fourth partition (124) are both in contact with the second partition beam (16), and the first loading plate (14) is rotated downward to allow the fire extinguishing material to fall from the loading slot (141) into the first isolation area (115).

3. The cable trench fire protection device according to claim 2, characterized in that: The first partition (121) includes a first base plate (12101) rotatably mounted on the first inner side wall (112) and a first slide plate (12102) slidably mounted on the first base plate (12101); the second partition (122) includes a second base plate (12201) rotatably mounted on the second inner side wall (113) and a second slide plate (12202) slidably mounted on the second base plate (12201); the third partition (123) includes a third base plate rotatably mounted on the first inner side wall (112) and a third slide plate slidably mounted on the third base plate; the fourth partition (124) includes a fourth base plate rotatably mounted on the second inner side wall (113) and a fourth slide plate slidably mounted on the fourth base plate; When the barrier assembly (12) is in the open state, the first slide (12102) and the second slide (12202) are separated to form the first wiring channel (125), and the third slide and the fourth slide are separated to form the second wiring channel (126); when the barrier assembly (12) is in the closed state, the first slide (12102) and the second slide (12202) are in contact with each other, and the third slide is in contact with the fourth slide.

4. The cable trench fire protection device according to claim 3, characterized in that: The first partition (121) further comprises a first cutter (12104) provided on the first slide (12102); the second partition (122) further comprises a second cutter (12204) provided on the second slide (12202); the third partition (123) further comprises a third cutter provided on the third slide; the fourth partition (124) further comprises a fourth cutter provided on the fourth slide; When the barrier assembly (12) is in the closed state, the blade of the first cutter (12104) abuts against the blade of the second cutter (12204), and the blade of the third cutter abuts against the blade of the fourth cutter.

5. The cable trench fire protection device according to any one of claims 2 to 4, characterized in that: There are two first loading plates (14) in each first isolation area (115), one of the first loading plates (14) is rotatably mounted on the first inner side wall (112), and the other first loading plate (14) is rotatably mounted on the second inner side wall (113); when the barrier assembly (12) is in the open state, one of the first loading plates (14) abuts against the upper ends of the first partition (121) and the third partition (123), and the other first loading plate (14) abuts against the upper ends of the second partition (122) and the fourth partition (124), and the two first loading plates (14) abut against each other.

6. The cable trench fire protection device according to any one of claims 1 to 4, characterized in that: Each of the triggers comprises a driving member mounted on the base (11) and a temperature sensor mounted on the base (11); the first partition (121), the second partition (122), the third partition (123), and the fourth partition (124) are all transmission-connected to the output end of the driving member, and the temperature sensor is electrically connected to the driving member.

7. The cable trench fire protection device according to any one of claims 1 to 4, characterized in that: Each trigger includes a cable (131) and a torsion spring; the first partition (121), the second partition (122), the third partition (123), and the fourth partition (124) are all pivotally connected to the base (11) through a pivot (18); the torsion spring is sleeved on the pivot (18); one end of the torsion spring is in contact with the first partition (121), the second partition (122), the third partition (123), or the fourth partition (124). The other end of the torsion spring is connected to the base (11), the first partition (121) of any barrier assembly (12) is connected to the third partition (123) or the fourth partition (124) through the cable (131), and the second partition (122) of any barrier assembly (12) is connected to the third partition (123) or the fourth partition (124) of the adjacent barrier assembly (12) through the cable (131).

8. A cable trench fire prevention method, based on the cable trench fire prevention device according to any one of claims 1 to 7, characterized in that: The following steps are involved: S10: The base (11) is installed in a cable trench, and each of the barrier components (12) and each of the triggers are respectively installed in the wiring trench (111) of the base (11), and each of the triggers drives each of the barrier components (12) to switch to the open state; S20: Laying the cable in the wiring trough (111), the cable passing through each of the first wiring channels (125) and each of the second wiring channels (126) along the predetermined path; S30: When a fire occurs in the cable in the wiring trough (111), one of the barrier components (12) or two of the barrier components (12) close to the fire point is switched to a closed state under the drive of the trigger to isolate the fire point from the first isolation zone (115) or the second isolation zone (116).

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