Fireproof device for cable tunnel

Abstract

The invention discloses a fireproof device for a cable tunnel, and solves the technical problems that fire extinguishing media are hindered when being sprayed to a cable on fire due to horizontal arrangement of fireproof partition plates among cable layers in the existing cable tunnel, and the fire behavior in the cable tunnel cannot be effectively controlled due to the fact that the position of a fire extinguishing device is fixed. The cable tunnel fire extinguishing device comprises two supporting and protecting mechanisms which are arranged on the two inner side walls of a cable tunnel correspondingly and used for supporting and protecting cables installed in the cable tunnel, and a fire extinguishing mechanism movably arranged in the cable tunnel. The partition plates between the cable layers are obliquely arranged, so that the partition plates are prevented from hindering a fire extinguishing medium from being sprayed to a fire cable, and the fire extinguishing effect is enhanced; the fire extinguishing mechanism is movably arranged in the cable tunnel, and the position of the spraying box in the cable tunnel can be correspondingly adjusted according to the ignition part in the cable tunnel, so that the corresponding ignition part is extinguished by using the fire extinguishing medium sprayed by the spray head on the spraying box, and the fire behavior in the cable tunnel can be effectively controlled.

Description

Technical Field

[0001] The invention belongs to the technical field of cable tunnel safety, and in particular relates to a fire protection device for a cable tunnel. Background Art

[0002] The construction of cable tunnels is conducive to solving the contradiction between urban densification and urban public facilities land use. It is also conducive to resisting the impact of sudden bad weather and extreme climate from the outside world and reducing the risk of secondary disasters of power grids induced by natural disasters. However, due to the centralized laying of a large number of power cables in cable tunnels, there is a high risk of fire inside cable tunnels. Factors such as short circuits between cable phases and to the ground, line overload and poor contact may cause cable fires. In order to control the fire in a small local area and prevent the spread of fire, some measures currently adopted are: setting horizontal fire partitions between cable layers and setting fire extinguishing devices in the tunnel. The existing technical problems are: first, the existing fire extinguishing devices are mainly installed on the top of the tunnel, and the horizontal fire partitions set between the cable layers will hinder the spraying of the fire extinguishing medium to the burning cable, reducing the fire extinguishing effect; second, the fire point in the cable tunnel is uncertain, and the fire extinguishing device fixed on the top of the tunnel can only extinguish the cables located in the area below it, and cannot effectively control the fire in the cable tunnel. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a fire protection device for a cable tunnel to at least solve part of the above technical problems.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is as follows:

[0005] A fire prevention device for a cable tunnel comprises two supporting and protecting mechanisms respectively arranged on two inner side walls of the cable tunnel for supporting and protecting cables installed in the cable tunnel, and a fire extinguishing mechanism movably arranged in the cable tunnel; the fire extinguishing mechanism comprises a sliding mechanism arranged between the top and the bottom of the cable tunnel, and a spraying mechanism movably arranged on the sliding mechanism for spraying a fire extinguishing medium.

[0006] Furthermore, the supporting and protecting mechanism comprises a plurality of supporting inclined plates arranged on the inner side wall of the cable tunnel, and a partition plate arranged between two adjacent supporting inclined plates in the same row and obliquely embedded on the inner side wall of the cable tunnel.

[0007] Furthermore, a plurality of parallelly distributed embedding grooves are provided on the inner side wall of the cable tunnel, and a plurality of the partitions are embedded in the embedding grooves.

[0008] Furthermore, the sliding mechanism includes a first sliding rod fixed at the top of the cable tunnel, a second sliding rod fixed at the bottom of the cable tunnel, a guide rod slidably embedded between the first sliding rod and the second sliding rod, and a first driving mechanism arranged at the top of the cable tunnel and connected to the guide rod to drive the guide rod to slide on the first sliding rod and the second sliding rod; the spraying mechanism is arranged on the guide rod.

[0009] Furthermore, a first slider is provided at the top of the guide rod, a second slider is provided at the bottom of the guide rod, the first slider is slidably embedded on the first slide rod, and the second slider is slidably embedded on the second slide rod; the first driving mechanism is connected to the first slider.

[0010] Furthermore, the first driving mechanism includes a first motor arranged on one end of the top of the cable tunnel, a first driving sprocket arranged on the driving shaft of the first motor, a first driven sprocket rotatingly arranged on the other end of the top of the cable tunnel, and a first chain sleeved between the first driving sprocket and the first driven sprocket and connected to the first slider.

[0011] Furthermore, the spraying mechanism includes a spraying box movably arranged on the guide rod, and a second driving mechanism arranged on the first slider and the guide rod and connected to the spraying box to drive the spraying box to move on the guide rod.

[0012] Furthermore, there are two second drive mechanisms, which include a second motor disposed on the bottom end of the guide rod, a second driving sprocket disposed on the driving shaft of the second motor, a second driven sprocket rotatably disposed at the bottom of the first slider, and a second chain sleeved between the second driving sprocket and the second driven sprocket and connected to the spray box.

[0013] Furthermore, a containing chamber for containing fire extinguishing medium is provided in the spray box, a conveying mechanism for conveying fire extinguishing medium connected from the containing chamber is provided on the spray box, and a nozzle connected from the conveying mechanism and with an output end located outside the spray box is provided on the spray box.

[0014] Furthermore, there are two conveying mechanisms, which include a first conveying main pipe connected from the accommodating chamber, a conveying pump connected from the first conveying main pipe, a second conveying main pipe connected from the conveying pump, a first conveying branch pipe connected from the second conveying main pipe, and a plurality of second conveying branches respectively connected from the first conveying branch pipes; a plurality of the nozzles are connected to the second conveying branch pipes.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention has a simple structure, a scientific and reasonable design, and is easy to use. The present invention tilts the partitions between the cable layers. When the fire extinguishing medium is sprayed from top to bottom, since the partitions are tilted upward from the bottom of the cable tunnel to the top of the cable tunnel, the fire extinguishing medium can smoothly pass through the gaps between the adjacent layers of partitions to extinguish the burning cable. The partitions are tilted to avoid the partitions hindering the fire extinguishing medium from spraying toward the burning cable, thereby enhancing the fire extinguishing effect. Different from the existing fire extinguishing device fixedly arranged on the top of the cable tunnel, the fire extinguishing mechanism of the present invention is movably arranged in the cable tunnel, and the position of the spray box in the cable tunnel can be adjusted accordingly according to the fire location in the cable tunnel, so that the fire extinguishing medium sprayed from the nozzle on the spray box is used to extinguish the corresponding fire location, which can effectively control the fire in the cable tunnel.

[0017] When adjusting the position of the spray box, the guide rod can be driven to slide by the first driving mechanism, and then the spray box can be driven to move synchronously by the guide rod, so that the spray box is displaced in the cable tunnel and along the length direction of the cable tunnel; the second driving mechanism can be used to drive the spray box to move up and down on the guide rod, so that the spray box is displaced in the cable tunnel and along the height direction of the cable tunnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention.

[0019] Figure 2 A cross-sectional view showing the distribution of the supporting inclined plates and the embedded grooves on the inner side wall of the cable tunnel.

[0020] Figure 3 It is a schematic diagram of the distribution of the embedded grooves on the inner wall of the cable tunnel when facing the inner wall of the cable tunnel.

[0021] Figure 4 It is a schematic diagram of the partitions and supporting inclined plates distributed on the inner wall of the cable tunnel when facing the inner wall of the cable tunnel.

[0022] Figure 5 This is a schematic diagram of the appearance of the guide rod driving the spray box to move along the length direction of the cable tunnel.

[0023] Figure 6 It is a cross-sectional schematic diagram showing that the guide rod drives the spray box to move along the length direction of the cable tunnel.

[0024] Figure 7 It is a partially enlarged schematic diagram showing the guide rod driving the spray box to move along the length direction of the cable tunnel.

[0025] Figure 8 for Figure 1 Magnified view of area A in .

[0026] Fig. 9 This is a schematic diagram of the second delivery branch pipe being connected to the first delivery branch pipe.

[0027] Fig.10 is a cross-sectional view of the first slider.

[0028] Fig.11 is a cross-sectional view of the second sliding bar.

[0029] Fig.12 Schematic diagram of the clearance hole on the spray box.

[0030] Fig.13 A schematic diagram of a through hole being provided on a spray box.

[0031] Fig.14 Schematic diagram of the cross section of the spray box.

[0032] The names corresponding to the reference numerals are:

[0033] 1-cable tunnel, 2-cable, 3-support inclined plate, 4-partition, 5-embedded groove, 6-first slide bar, 7-second slide bar, 8-first slider, 9-second slider, 10-guide rod, 11-first motor, 12-first driving sprocket, 13-first driven sprocket, 14-first chain, 15-spray box, 16-second motor, 17-second driving sprocket, 18-second driven sprocket, 19-second chain, 20-containing cavity, 21-first conveying main pipe, 22-conveying pump, 23-second conveying main pipe, 24-first conveying branch pipe, 25-second conveying branch pipe, 26-spray head, 27-first slide groove, 28-second slide groove, 29-through hole, 30-through hole, 31-first installation cavity, 32-second installation cavity, 33-installation plate. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0035] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore they cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0036] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; of course, it can also be a mechanical connection or an electrical connection; in addition, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] Example 1

[0038] like Figure 1-14 As shown, the present invention provides a fire prevention device for a cable tunnel, comprising two supporting and protecting mechanisms respectively arranged on the two inner side walls of the cable tunnel for supporting and protecting the cables installed in the cable tunnel, and a fire extinguishing mechanism movably arranged in the cable tunnel; the fire extinguishing mechanism comprises a sliding mechanism arranged between the top of the cable tunnel and the bottom of the cable tunnel, and a spraying mechanism movably arranged on the sliding mechanism for spraying a fire extinguishing medium.

[0039] The present invention has a simple structure, a scientific and reasonable design, and is easy to use. The present invention tilts the partitions between the cable layers. When the fire extinguishing medium is sprayed from top to bottom, since the partitions are tilted upward from the bottom of the cable tunnel to the top of the cable tunnel, the fire extinguishing medium can smoothly pass through the gaps between the adjacent layers of partitions to extinguish the burning cable. The partitions are tilted to avoid the partitions hindering the spraying of the fire extinguishing medium toward the burning cable, thereby enhancing the fire extinguishing effect. Different from the existing fire extinguishing device fixedly arranged on the top of the cable tunnel, the fire extinguishing mechanism of the present invention is movably arranged in the cable tunnel, and the position of the spray box in the cable tunnel can be adjusted accordingly according to the fire location in the cable tunnel, so that the fire extinguishing medium sprayed from the nozzle on the spray box is used to extinguish the corresponding fire location, which can effectively control the fire in the cable tunnel.

[0040] Figure 5 , Figure 6 and Figure 7 The arrow in the figure indicates the direction in which the guide rod slides back and forth along the length of the cable tunnel.

[0041] Example 2

[0042] like Figure 1-14 As shown, the present invention provides a fire prevention device for a cable tunnel, comprising two supporting and protecting mechanisms respectively arranged on the two inner side walls of the cable tunnel for supporting and protecting the cables installed in the cable tunnel, and a fire extinguishing mechanism movably arranged in the cable tunnel; the fire extinguishing mechanism comprises a sliding mechanism arranged between the top of the cable tunnel and the bottom of the cable tunnel, and a spraying mechanism movably arranged on the sliding mechanism for spraying a fire extinguishing medium.

[0043] The supporting and protecting mechanism comprises a plurality of supporting inclined plates 3 arranged on the inner side wall of the cable tunnel, and a partition plate 4 arranged between two adjacent supporting inclined plates 3 in the same row and obliquely embedded on the inner side wall of the cable tunnel. In the present embodiment 2, the partition plate 4 is embedded on the inner side wall of the cable tunnel and is placed between two adjacent supporting inclined plates 3, so that the partition plate 4 is convenient to install and remove.

[0044] Example 3

[0045] like Figure 1-14 As shown, the present invention provides a fire prevention device for a cable tunnel, comprising two supporting and protecting mechanisms respectively arranged on the two inner side walls of the cable tunnel for supporting and protecting the cables installed in the cable tunnel, and a fire extinguishing mechanism movably arranged in the cable tunnel; the fire extinguishing mechanism comprises a sliding mechanism arranged between the top of the cable tunnel and the bottom of the cable tunnel, and a spraying mechanism movably arranged on the sliding mechanism for spraying a fire extinguishing medium.

[0046] The supporting and protecting mechanism comprises a plurality of supporting inclined plates 3 arranged on the inner wall of the cable tunnel, and a partition plate 4 arranged between two adjacent supporting inclined plates 3 in the same row and obliquely embedded on the inner wall of the cable tunnel.

[0047] A plurality of parallelly distributed embedding grooves 5 are provided on the inner side wall of the cable tunnel, and a plurality of partitions 4 are embedded in the embedding grooves 5 .

[0048] In this embodiment 3, the embedding groove 5 is inclined upward from the bottom of the cable tunnel 1 to the top of the cable tunnel 1, and the partition 4 is obliquely embedded in the embedding groove 5; two adjacent partitions 4 in the embedding groove 5 are fitted together; and cables 2 are placed on several partitions 4 embedded in the embedding groove 5.

[0049] Example 4

[0050] like Figure 1-14 As shown, the present invention provides a fire prevention device for a cable tunnel, comprising two supporting and protecting mechanisms respectively arranged on the two inner side walls of the cable tunnel for supporting and protecting the cables installed in the cable tunnel, and a fire extinguishing mechanism movably arranged in the cable tunnel; the fire extinguishing mechanism comprises a sliding mechanism arranged between the top of the cable tunnel and the bottom of the cable tunnel, and a spraying mechanism movably arranged on the sliding mechanism for spraying a fire extinguishing medium.

[0051] The sliding mechanism includes a first sliding rod 6 fixed at the top of the cable tunnel, a second sliding rod 7 fixed at the bottom of the cable tunnel, a guide rod 10 slidably embedded between the first sliding rod 6 and the second sliding rod 7, and a first driving mechanism arranged at the top of the cable tunnel and connected to the guide rod 10 to drive the guide rod 10 to slide on the first sliding rod 6 and the second sliding rod 7; the spraying mechanism is arranged on the guide rod 10.

[0052] In this embodiment 4, the first slide bar 6 is arranged on the inner top of the cable tunnel 1 along the length direction of the cable tunnel 1, and the second slide bar 7 is arranged on the inner bottom of the cable tunnel 1 along the length direction of the cable tunnel 1. When the guide bar 10 slides on the first slide bar 6 and the second slide bar 7, the guide bar is displaced in the cable tunnel 1 along the length direction of the cable tunnel 1.

[0053] Example 5

[0054] like Figure 1-14 As shown, the present invention provides a fire prevention device for a cable tunnel, comprising two supporting and protecting mechanisms respectively arranged on the two inner side walls of the cable tunnel for supporting and protecting the cables installed in the cable tunnel, and a fire extinguishing mechanism movably arranged in the cable tunnel; the fire extinguishing mechanism comprises a sliding mechanism arranged between the top of the cable tunnel and the bottom of the cable tunnel, and a spraying mechanism movably arranged on the sliding mechanism for spraying a fire extinguishing medium.

[0055] The sliding mechanism includes a first sliding rod 6 fixed at the top of the cable tunnel, a second sliding rod 7 fixed at the bottom of the cable tunnel, a guide rod 10 slidably embedded between the first sliding rod 6 and the second sliding rod 7, and a first driving mechanism arranged at the top of the cable tunnel and connected to the guide rod 10 to drive the guide rod 10 to slide on the first sliding rod 6 and the second sliding rod 7; the spraying mechanism is arranged on the guide rod 10.

[0056] A first slider 8 is provided on the top of the guide rod 10 , and a second slider 9 is provided on the bottom of the guide rod 10 . The first slider 8 is slidably embedded in the first slide bar 6 , and the second slider 9 is slidably embedded in the second slide bar 7 . The first driving mechanism is connected to the first slider 8 .

[0057] In this embodiment 5, there are two first slide bars 6, and the two first slide bars 6 are arranged parallel to each other. The first slide bar 8 is provided with two first slide grooves 27 respectively adapted to the two first slide bars 6. The first slide bar 6 is slidably mounted in the first slide grooves 27. The second slide bar 7 is provided with a second slide groove 28 along its length direction, and the second slide bar 9 is slidably mounted in the second slide groove 28. When the position of the guide rod 10 in the cable tunnel 1 needs to be adjusted, the first drive mechanism is used to drive the first slide bar 8 to slide back and forth on the first slide bar 6, and the first slide bar 8 drives the guide rod 10 to move synchronously, so that the position of the guide rod 10 in the cable tunnel 1 can be adjusted. The second slide bar 7 is used to support and limit the guide rod 10 to ensure the stability of the guide rod 10 during movement.

[0058] Example 6

[0059] like Figure 1-14As shown, the present invention provides a fire prevention device for a cable tunnel, comprising two supporting and protecting mechanisms respectively arranged on the two inner side walls of the cable tunnel for supporting and protecting the cables installed in the cable tunnel, and a fire extinguishing mechanism movably arranged in the cable tunnel; the fire extinguishing mechanism comprises a sliding mechanism arranged between the top of the cable tunnel and the bottom of the cable tunnel, and a spraying mechanism movably arranged on the sliding mechanism for spraying a fire extinguishing medium.

[0060] The sliding mechanism includes a first sliding rod 6 fixed at the top of the cable tunnel, a second sliding rod 7 fixed at the bottom of the cable tunnel, a guide rod 10 slidably embedded between the first sliding rod 6 and the second sliding rod 7, and a first driving mechanism arranged at the top of the cable tunnel and connected to the guide rod 10 to drive the guide rod 10 to slide on the first sliding rod 6 and the second sliding rod 7; the spraying mechanism is arranged on the guide rod 10.

[0061] A first slider 8 is provided on the top of the guide rod 10 , and a second slider 9 is provided on the bottom of the guide rod 10 . The first slider 8 is slidably embedded in the first slide bar 6 , and the second slider 9 is slidably embedded in the second slide bar 7 . The first driving mechanism is connected to the first slider 8 .

[0062] The first driving mechanism includes a first motor 11 arranged on one end of the top of the cable tunnel, a first driving sprocket 12 arranged on the driving shaft of the first motor 11, a first driven sprocket 13 rotating on the other end of the top of the cable tunnel, and a first chain 14 sleeved between the first driving sprocket 12 and the first driven sprocket 13 and connected to the first slider 8.

[0063] In this embodiment 6, the first motor 11 is a forward and reverse servo motor, and the principle of the first driving mechanism driving the first slider 8 to slide on the first slide rod 6 is: the first motor 11 is started, the driving shaft of the first motor 11 rotates, the driving shaft of the first motor 11 drives the first active sprocket 12 to rotate synchronously, the first active sprocket 12 drives the first chain 14 to reciprocate between the first active sprocket 12 and the first driven sprocket 13, and the first chain 14 pulls the first slider 8 to slide on the first slide rod 6.

[0064] Example 7

[0065] like Figure 1-14 As shown, the present invention provides a fire prevention device for a cable tunnel, comprising two supporting and protecting mechanisms respectively arranged on the two inner side walls of the cable tunnel for supporting and protecting the cables installed in the cable tunnel, and a fire extinguishing mechanism movably arranged in the cable tunnel; the fire extinguishing mechanism comprises a sliding mechanism arranged between the top of the cable tunnel and the bottom of the cable tunnel, and a spraying mechanism movably arranged on the sliding mechanism for spraying a fire extinguishing medium.

[0066] The sliding mechanism includes a first sliding rod 6 fixed at the top of the cable tunnel, a second sliding rod 7 fixed at the bottom of the cable tunnel, a guide rod 10 slidably embedded between the first sliding rod 6 and the second sliding rod 7, and a first driving mechanism arranged at the top of the cable tunnel and connected to the guide rod 10 to drive the guide rod 10 to slide on the first sliding rod 6 and the second sliding rod 7; the spraying mechanism is arranged on the guide rod 10.

[0067] A first slider 8 is provided on the top of the guide rod 10 , and a second slider 9 is provided on the bottom of the guide rod 10 . The first slider 8 is slidably embedded in the first slide bar 6 , and the second slider 9 is slidably embedded in the second slide bar 7 . The first driving mechanism is connected to the first slider 8 .

[0068] The spraying mechanism includes a spraying box 15 movably inserted on the guide rod 10 , and a second driving mechanism disposed on the first slider 8 and the guide rod 10 and connected to the spraying box 15 to drive the spraying box 15 to move on the guide rod 10 .

[0069] In this embodiment 7, the spray box 15 is filled with a fire extinguishing medium. When the cable 2 in the cable tunnel catches fire, the spray box 15 sprays the fire extinguishing medium contained therein onto the burning cable to extinguish the fire. The position of the spray box 15 can be adjusted accordingly according to the location of the fire in the cable tunnel, and the position of the spray box 15 can be adjusted to the vicinity of the fire location, so that the fire location can be extinguished by the fire extinguishing medium sprayed from the spray box 15. When adjusting the position of the spray box, the first driving mechanism can be used to drive the guide rod to slide back and forth, and then the guide rod can be used to drive the spray box to move synchronously, so that the spray box is displaced in the cable tunnel and along the length direction of the cable tunnel; the second driving mechanism can be used to drive the spray box to move up and down on the guide rod, so that the spray box is displaced in the cable tunnel and along the height direction of the cable tunnel.

[0070] Example 8

[0071] like Figure 1-14 As shown, the present invention provides a fire prevention device for a cable tunnel, comprising two supporting and protecting mechanisms respectively arranged on the two inner side walls of the cable tunnel for supporting and protecting the cables installed in the cable tunnel, and a fire extinguishing mechanism movably arranged in the cable tunnel; the fire extinguishing mechanism comprises a sliding mechanism arranged between the top of the cable tunnel and the bottom of the cable tunnel, and a spraying mechanism movably arranged on the sliding mechanism for spraying a fire extinguishing medium.

[0072] The sliding mechanism includes a first sliding rod 6 fixed at the top of the cable tunnel, a second sliding rod 7 fixed at the bottom of the cable tunnel, a guide rod 10 slidably embedded between the first sliding rod 6 and the second sliding rod 7, and a first driving mechanism arranged at the top of the cable tunnel and connected to the guide rod 10 to drive the guide rod 10 to slide on the first sliding rod 6 and the second sliding rod 7; the spraying mechanism is arranged on the guide rod 10.

[0073] A first slider 8 is provided on the top of the guide rod 10 , and a second slider 9 is provided on the bottom of the guide rod 10 . The first slider 8 is slidably embedded in the first slide bar 6 , and the second slider 9 is slidably embedded in the second slide bar 7 . The first driving mechanism is connected to the first slider 8 .

[0074] The spraying mechanism includes a spraying box 15 movably inserted on the guide rod 10 , and a second driving mechanism disposed on the first slider 8 and the guide rod 10 and connected to the spraying box 15 to drive the spraying box 15 to move on the guide rod 10 .

[0075] There are two second driving mechanisms, which include a second motor 16 disposed at the bottom end of the guide rod 10, a second driving sprocket 17 disposed on the driving shaft of the second motor 16, a second driven sprocket 18 rotatably disposed at the bottom of the first slider 8, and a second chain 19 sleeved between the second driving sprocket 17 and the second driven sprocket 18 and connected to the spray box 15.

[0076] In the present embodiment 8, a mounting plate 33 is provided on the bottom end of the guide rod 10, and a second motor 16 is provided on the mounting plate 33, and the second motor 16 is a forward and reverse servo motor. The principle of the second driving mechanism driving the spray box to move up and down on the guide rod is as follows: the second motor 16 is started, the driving shaft of the second motor 16 rotates, the driving shaft of the second motor 16 drives the second driving sprocket 17 to rotate synchronously, the second driving sprocket 17 drives the second chain 19 to reciprocate between the second driving sprocket 17 and the second driven sprocket 18, and the second chain 19 pulls the spray box to slide up and down on the guide rod.

[0077] In the present embodiment 8, a through hole 29 adapted to the guide rod 10 is provided in the spray box 15, and the guide rod 10 is provided in the through hole 29. A clearance through hole 30 for making way for the second chain 19 is provided in the spray box 15, and the second chain 19 is sleeved between the second driving sprocket 17 and the second driven sprocket 18 after passing through the clearance through hole 30.

[0078] Example 9

[0079] like Figure 1-14 As shown, the present invention provides a fire prevention device for a cable tunnel, comprising two supporting and protecting mechanisms respectively arranged on the two inner side walls of the cable tunnel for supporting and protecting the cables installed in the cable tunnel, and a fire extinguishing mechanism movably arranged in the cable tunnel; the fire extinguishing mechanism comprises a sliding mechanism arranged between the top of the cable tunnel and the bottom of the cable tunnel, and a spraying mechanism movably arranged on the sliding mechanism for spraying a fire extinguishing medium.

[0080] The sliding mechanism includes a first sliding rod 6 fixed at the top of the cable tunnel, a second sliding rod 7 fixed at the bottom of the cable tunnel, a guide rod 10 slidably embedded between the first sliding rod 6 and the second sliding rod 7, and a first driving mechanism arranged at the top of the cable tunnel and connected to the guide rod 10 to drive the guide rod 10 to slide on the first sliding rod 6 and the second sliding rod 7; the spraying mechanism is arranged on the guide rod 10.

[0081] A first slider 8 is provided on the top of the guide rod 10 , and a second slider 9 is provided on the bottom of the guide rod 10 . The first slider 8 is slidably embedded in the first slide bar 6 , and the second slider 9 is slidably embedded in the second slide bar 7 . The first driving mechanism is connected to the first slider 8 .

[0082] The spraying mechanism includes a spraying box 15 movably inserted on the guide rod 10 , and a second driving mechanism disposed on the first slider 8 and the guide rod 10 and connected to the spraying box 15 to drive the spraying box 15 to move on the guide rod 10 .

[0083] The spray box 15 has a containing chamber 20 for containing a fire extinguishing medium, a conveying mechanism for conveying the fire extinguishing medium from the containing chamber 20 , and a nozzle 26 connected from the conveying mechanism and with an output end located outside the spray box 15 .

[0084] In this embodiment 9, the conveying mechanism conveys the fire extinguishing medium contained in the containing chamber 20 to the nozzle 26, and the nozzle 26 sprays the fire extinguishing medium onto the burning cable, thereby extinguishing the burning cable.

[0085] Example 10

[0086] like Figure 1-14 As shown, the present invention provides a fire prevention device for a cable tunnel, comprising two supporting and protecting mechanisms respectively arranged on the two inner side walls of the cable tunnel for supporting and protecting the cables installed in the cable tunnel, and a fire extinguishing mechanism movably arranged in the cable tunnel; the fire extinguishing mechanism comprises a sliding mechanism arranged between the top of the cable tunnel and the bottom of the cable tunnel, and a spraying mechanism movably arranged on the sliding mechanism for spraying a fire extinguishing medium.

[0087] The sliding mechanism includes a first sliding rod 6 fixed at the top of the cable tunnel, a second sliding rod 7 fixed at the bottom of the cable tunnel, a guide rod 10 slidably embedded between the first sliding rod 6 and the second sliding rod 7, and a first driving mechanism arranged at the top of the cable tunnel and connected to the guide rod 10 to drive the guide rod 10 to slide on the first sliding rod 6 and the second sliding rod 7; the spraying mechanism is arranged on the guide rod 10.

[0088] A first slider 8 is provided on the top of the guide rod 10 , and a second slider 9 is provided on the bottom of the guide rod 10 . The first slider 8 is slidably embedded in the first slide bar 6 , and the second slider 9 is slidably embedded in the second slide bar 7 . The first driving mechanism is connected to the first slider 8 .

[0089] The spraying mechanism includes a spraying box 15 movably inserted on the guide rod 10 , and a second driving mechanism disposed on the first slider 8 and the guide rod 10 and connected to the spraying box 15 to drive the spraying box 15 to move on the guide rod 10 .

[0090] The spray box 15 has a containing chamber 20 for containing a fire extinguishing medium, a conveying mechanism for conveying the fire extinguishing medium from the containing chamber 20 , and a nozzle 26 connected from the conveying mechanism and with an output end located outside the spray box 15 .

[0091] There are two conveying mechanisms, which include a first conveying main pipe 21 connected to the accommodating chamber 20, a conveying pump 22 connected to the first conveying main pipe 21, a second conveying main pipe 23 connected to the conveying pump 22, a first conveying branch pipe 24 connected to the second conveying main pipe 23, and a plurality of second conveying branch pipes 25 respectively connected to the first conveying branch pipe 24; a plurality of the nozzles 26 are connected to the second conveying branch pipe 25.

[0092] In this embodiment 10, the delivery pump 22 pumps the fire extinguishing medium contained in the containing chamber 20 to the nozzle 26, and the nozzle 26 sprays the fire extinguishing medium to the burning cable, thereby extinguishing the burning cable. The nozzles 26 are distributed on the side of the spray box 15 facing the cable 2. The spray box 15 is provided with a first installation chamber 31 and a second installation chamber 32, the delivery pump 22 is installed in the first installation chamber 31, and the second delivery main pipe 23, the first delivery branch pipe 24 and the second delivery branch pipe 25 are located in the second installation chamber 32. The first delivery main pipe 21 is sealed and connected from the containing chamber 20.

[0093] The first motor 11, the second motor 16 and the delivery pump 22 used in the present invention are all existing known electrical equipment and can be directly purchased and used on the market. The structures, circuits, and control principles of the first motor 11, the second motor 16 and the delivery pump 22 are all existing known technologies. Therefore, the structures, circuits, and control principles of the first motor 11, the second motor 16 and the delivery pump 22 are not repeated here.

[0094] Finally, it should be noted that the above embodiments are only preferred embodiments of the present invention to illustrate the technical solutions of the present invention, rather than limiting them, and certainly not limiting the patent scope of the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention. In other words, any changes or modifications made to the main design concept and spirit of the present invention that have no substantive significance, and the technical problems they solve are still consistent with the present invention, should be included in the protection scope of the present invention. In addition, the direct or indirect application of the technical solutions of the present invention in other related technical fields is also included in the patent protection scope of the present invention.

Claims

1. A fire protection device for a cable tunnel, characterized in that: It includes two supporting and protecting mechanisms respectively arranged on the two inner side walls of the cable tunnel for supporting and protecting the cables installed in the cable tunnel, and a fire extinguishing mechanism movably arranged in the cable tunnel; the fire extinguishing mechanism includes a sliding mechanism arranged between the top and the bottom of the cable tunnel, and a spraying mechanism movably arranged on the sliding mechanism for spraying the fire extinguishing medium.

2. A fire protection device for a cable tunnel according to claim 1, characterized in that: The supporting and protecting mechanism comprises a plurality of supporting inclined plates (3) arranged in an array on the inner wall of the cable tunnel, and a partition plate (4) arranged between two adjacent supporting inclined plates (3) in the same row and obliquely embedded on the inner wall of the cable tunnel.

3. A fire protection device for a cable tunnel according to claim 2, characterized in that: A plurality of parallelly distributed embedding grooves (5) are provided on the inner side wall of the cable tunnel, and a plurality of partition plates (4) are embedded in the embedding grooves (5).

4. A fire protection device for a cable tunnel according to claim 1, characterized in that: The sliding mechanism comprises a first sliding rod (6) fixedly arranged at the top of the cable tunnel, a second sliding rod (7) fixedly arranged at the bottom of the cable tunnel, a guide rod (10) slidably embedded between the first sliding rod (6) and the second sliding rod (7), and a first driving mechanism arranged at the top of the cable tunnel and connected to the guide rod (10) to drive the guide rod (10) to slide on the first sliding rod (6) and the second sliding rod (7); the spraying mechanism is arranged on the guide rod (10).

5. A fire protection device for a cable tunnel according to claim 4, characterized in that: A first slider (8) is provided at the top of the guide rod (10), a second slider (9) is provided at the bottom of the guide rod (10), the first slider (8) is slidably mounted on the first slider (6), and the second slider (9) is slidably mounted on the second slider (7); the first driving mechanism is connected to the first slider (8).

6. A fire protection device for a cable tunnel according to claim 5, characterized in that: The first driving mechanism comprises a first motor (11) disposed on one end of the top of the cable tunnel, a first driving sprocket (12) disposed on a driving shaft of the first motor (11), a first driven sprocket (13) rotatably disposed on the other end of the top of the cable tunnel, and a first chain (14) sleeved between the first driving sprocket (12) and the first driven sprocket (13) and connected to the first slider (8).

7. A fire protection device for a cable tunnel according to claim 5, characterized in that: The spraying mechanism comprises a spraying box (15) movably mounted on a guide rod (10), and a second driving mechanism which is arranged on a first slider (8) and the guide rod (10) and is connected to the spraying box (15) to drive the spraying box (15) to move on the guide rod (10).

8. A fire protection device for a cable tunnel according to claim 7, characterized in that: The number of the second driving mechanisms is two, and the second driving mechanisms include a second motor (16) arranged at the bottom end of the guide rod (10), a second driving sprocket (17) arranged on the driving shaft of the second motor (16), a second driven sprocket (18) rotatably arranged at the bottom of the first slider (8), and a second chain (19) sleeved between the second driving sprocket (17) and the second driven sprocket (18) and connected to the spray box (15).

9. A fire protection device for a cable tunnel according to claim 7, characterized in that: A containing chamber (20) for containing a fire extinguishing medium is provided in the spray box (15), a conveying mechanism for conveying the fire extinguishing medium connected from the containing chamber (20) is provided on the spray box (15), and a nozzle (26) connected from the conveying mechanism and having an output end located outside the spray box (15) is provided on the spray box (15).

10. A fire protection device for a cable tunnel according to claim 9, characterized in that: There are two conveying mechanisms, which include a first conveying main pipe (21) connected to the accommodating chamber (20), a conveying pump (22) connected to the first conveying main pipe (21), a second conveying main pipe (23) connected to the conveying pump (22), a first conveying branch pipe (24) connected to the second conveying main pipe (23), and a plurality of second conveying branch pipes (25) respectively connected to the first conveying branch pipe (24); a plurality of the nozzles (26) are connected to the second conveying branch pipes (25).

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