A mine distributed optical fiber temperature measurement fire early warning device

Abstract

The present application relates to the field of optical fiber temperature measurement alarm, especially to a mine distributed optical fiber temperature measurement fire early warning device, including mainboard and several fixed bolts arranged on the upper end, the mainboard is provided with several transverse grooves distributed along the extension section, the clamping unit is arranged in the transverse groove for clamping the optical fiber, the optical fiber is driven to move up and down to increase the detection range of the optical fiber, the guard plates are arranged on both sides of the mainboard, the guard plates and the mainboard are provided with several vertical grooves corresponding to the transverse grooves, the rectangular plates are slidably arranged in the vertical grooves, the mounting grooves are arranged on the rectangular plates, the liquid crystal plates are mounted in the mounting grooves, and the liquid crystal plates are used for screen display warning light, the driving screw in the application drives the sliding block in the transverse groove to move relatively or reversely through the symmetric reverse thread transmission, and then controls the lifting of the swing plate and the optical fiber; when the mine is unattended, the optical fiber is lowered to expand the detection range, can more comprehensively perceive the temperature change, and improves the fire capturing ability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of optical fiber temperature measurement and alarm, in particular to a mine-used distributed optical fiber temperature measurement fire warning device. BACKGROUND

[0002] Optical fiber temperature measurement technology is an advanced means for temperature measurement by utilizing the physical effects generated when light is transmitted in optical fiber; when optical signals propagate in optical fiber, phenomena such as Raman scattering and Brillouin scattering occur, and temperature information can be obtained by analyzing the characteristics of scattered light; this technology plays a key role in mine safety production, can monitor areas such as roadways and mining faces, and can effectively reduce the false and missed alarm rate of fire.

[0003] However, the current mine-used optical fiber temperature measurement device has many shortcomings; during laying, the traditional winding and binding or simple buckle fixing methods cannot adapt to the complex environment of the mine, installation and adjustment are cumbersome, and construction is difficult. During maintenance, it is difficult to locate optical fiber faults, and disassembly can cause secondary damage, resulting in high maintenance costs; during daily operations, long-term exposure of optical fiber can hinder personnel and equipment from passing through, increasing safety hazards. Moreover, the optical fiber is exposed to the environment for a long time, dust accumulates on the outside, causing the temperature measurement signal to attenuate, seriously affecting the detection accuracy, and precise temperature monitoring and fire warning cannot be achieved.

[0004] In the prior art, a coal mine underground distributed optical fiber temperature measurement system with publication number CN203519200U is disclosed, and the principle is based on the physical properties of optical fiber. Temperature sensing optical fiber is laid along the mine roadway and equipment, which can sense changes in environmental temperature and change the characteristics of optical signals in the optical fiber; the distributed optical fiber temperature measurement host transmits optical pulses, receives reflected light, uses optical time domain reflection (OTDR) technology, combines Raman scattering analysis, and calculates the temperature along the optical fiber; when the temperature exceeds the preset threshold, the host sends an order to the mine-used intrinsically safe sound and light alarm device through the cable to alert personnel with sound and light. However, although this technology improves some of the original problems, there are still aspects that need to be further optimized to better meet the actual detection needs.

[0005] The above-mentioned comparative document only describes the composition and principle of the mine-used distributed optical fiber temperature measurement fire alarm system and does not involve the optical fiber laying method, it is speculated that the conventional laying method is used; however, the conventional laying method is too high, which reduces the temperature monitoring sensitivity and affects the detection range, and too low, which hinders personnel and equipment from passing through; in addition, although the document mentions a sound and light alarm device, its function is limited, the position of the light flickering and sound warning is uncertain, and there is a lack of escape direction guidance; in the complex mine fire scene with thick smoke, it cannot effectively help personnel quickly determine the escape direction, reduce the evacuation efficiency, and ensure personnel safety.

[0006] Therefore, under the above-mentioned viewpoints, there is still room for improvement for the existing optical fiber temperature measurement and alarm device. SUMMARY

[0007] In order to solve the above problems, the application provides a mine distributed optical fiber temperature measurement fire warning device, which comprises a main plate and a plurality of fixing bolts arranged on the upper end thereof, a plurality of transverse grooves are arranged on the main plate along the extension section thereof, a clamping unit is arranged in the transverse groove for clamping the optical fiber, and the optical fiber is driven to move up and down to increase the detection range of the optical fiber.

[0008] Protective plates are arranged on both sides of the main plate, a plurality of vertical grooves corresponding to the transverse grooves are arranged between the protective plates and the main plate, a rectangular plate is slidably arranged in the vertical groove, a mounting groove is arranged on the rectangular plate, a liquid crystal plate is mounted in the mounting groove, and the liquid crystal plate is used for screen display of warning lights.

[0009] Preferably, the clamping unit comprises a sliding block slidably arranged in the transverse groove, a swing plate is hingedly connected to the lower end of the sliding block, a swing ring is arranged at the lower end of the swing plate, adjacent two swing rings form a group, an arc-shaped groove is arranged on one side of the swing ring of the group, and the swing ring on the other side is provided with an arc-shaped plate slidably inserted into the corresponding arc-shaped groove.

[0010] Preferably, a mounting assembly for mounting the optical fiber is further arranged on the swing ring, the mounting assembly comprises a through groove arranged on the swing ring, a limiting cone is mounted on the inner side wall of the through groove on one side of the swing ring, a swing arc plate is hingedly connected to the limiting cone through a torsional spring, and one side of the swing arc plate is in contact with the inner side wall of the corresponding through groove.

[0011] Preferably, a wiping unit for wiping dust on the outer side of the optical fiber is arranged at one end of the swing ring on one side, the wiping unit comprises a plurality of rotating shafts rotatably inserted into one side of the swing ring, and the end portion of the rotating shaft extends to one side of the swing ring of the other group.

[0012] A friction cylinder is sleeved on the outer side of the rotating shaft.

[0013] Preferably, an arc-shaped groove is arranged at one end of the arc-shaped plate facing the arc-shaped groove, a plurality of driving teeth are arranged on the inner diameter of the structure groove, one side of the rotating shaft is rotatably inserted into the corresponding structure groove, and a plurality of driven teeth distributed along the axis of the rotating shaft are arranged on the outer side of the rotating shaft.

[0014] Preferably, a loudspeaker assembly for emitting alarm sound is further arranged in the vertical groove, the loudspeaker assembly comprises a containing groove arranged on the outer wall of the vertical groove, a loudspeaker is mounted in the containing groove, and a sound emitting groove is further arranged on the outer side of the protective plate and penetrates the vertical groove.

[0015] Preferably, a containing cavity is further arranged in the rectangular plate, the containing cavity penetrates to the outer side of the rectangular plate on one side, a sliding plate is slidably arranged in the containing cavity, a clamping ball extending to one side of the rectangular plate is arranged on one side of the sliding plate, and a return spring is further arranged between the sliding plate and the inner side wall of the containing cavity.

[0016] Preferably, the inner side wall of the vertical groove is further provided with a wiping block corresponding to the liquid crystal panel.

[0017] Preferably, the main plate is further provided with a driving unit for driving the sliding blocks and the rectangular plate to move, the driving unit comprising a driving screw rod rotatably arranged in the horizontal groove, and the outer side of the driving screw rod rotatably penetrating through and threadedly connected with the corresponding two sliding blocks.

[0018] The vertical groove is further rotatably provided with a driven shaft, one side of the driving screw rod rotatably penetrating into the vertical groove and being connected with the driven shaft through belt transmission, and the outer side of the driven shaft is sleeved with a driven gear, and one side of the rectangular plate is provided with a driven rack engaged with the driven gear.

[0019] Preferably, a plurality of transmission shafts with ends located in the corresponding horizontal grooves are rotatably arranged in the main plate, the transmission shafts on both sides of the main plate penetrating out of the main plate, and one side of the transmission shaft located in the horizontal groove is connected with the corresponding driving screw rod through bevel gear transmission.

[0020] To sum up, the present application has at least one of the following beneficial technical effects:

[0021] Firstly, the driving screw rod in the present application drives the sliding blocks in the horizontal groove to move relatively or reversely through symmetrical reverse thread transmission, thereby controlling the swing plate and the optical fiber to lift; when the mine is unattended, the optical fiber is lowered to expand the detection range, which can more comprehensively perceive temperature changes and improve the fire capture ability; when people are working, the optical fiber is retracted to avoid collision with personnel and equipment, which not only ensures the stable operation of the early warning system, but also provides a safe space for personnel operation, realizing the unity of detection and operation safety.

[0022] Secondly, in the mounting assembly of the present application, the swing arc plate cooperates with the torsional spring to realize quick disassembly and assembly of the optical fiber, the wiping unit drives the friction cylinder to remove dust on the surface of the optical fiber through the arc plate transmission, thereby maintaining the detection accuracy; when a fire occurs, the loudspeaker releases an alarm through the sound emitting groove, the liquid crystal panel synchronously displays warning information, the sound and light combination assists the rescue personnel to locate the fire source, guides the evacuation of the personnel in the mine, shortens the emergency response time, and improves the rescue efficiency.

[0023] Thirdly, the present application uses the outer expansion assembly to cope with complex mine layout, the outer connecting plate and the bending plate are connected through bolts, the end insertion plate of the transmission shaft is precisely matched with the expansion shaft insertion slot, and the bevel gear transmission is used to make a single driving device control multiple devices to synchronously operate; this design simplifies the driving structure, reduces the number of devices, reduces the installation and maintenance cost, and enhances the adaptability and expansion ability of the device in the complex mine environment. BRIEF DESCRIPTION OF DRAWINGS

[0024] The present application will be further described below in combination with the drawings and examples.

[0025] Figure 1is a structural schematic diagram of the body of the present application.

[0026] Figure 2 is a bottom view of the body of the present application.

[0027] Figure 3 is a structural schematic diagram of the clamping unit of the present application.

[0028] Figure 4 is a partial structural enlarged view at A in the present application Figure 3

[0029] Figure 5 is a structural schematic diagram of the wiping unit of the present application.

[0030] Figure 6 is a partial structural enlarged view at B in the present application Figure 5

[0031] Figure 7 is a structural schematic diagram of the loudspeaker assembly of the present application.

[0032] Figure 8 is a partial structural enlarged view at C in the present application Figure 7

[0033] Figure 9 is a bottom view of the driving unit of the present application.

[0034] Figure 10 is a partial structural enlarged view at D in the present application Figure 9

[0035] Figure 11 is a top view of the driving unit of the present application.

[0036] Figure 12 is a structural schematic diagram of the outer extension assembly of the present application.

[0037] Figure 13 is a sectional view of the outer extension assembly of the present application.

[0038] Figure 14 is a partial structural enlarged view at E in the present application Figure 13

[0039] ​​​​​In the figure, 1, the main plate; 10, the fixed bolt; 11, the horizontal groove; 12, the guard plate; 13, the vertical groove; 14, the rectangular plate; 15, the liquid crystal plate; 2, the clamping unit; 20, the sliding block; 21, the swing plate; 22, the swing ring; 23, the arc plate; 3, the mounting assembly; 30, the through groove; 31, the limiting cone; 32, the swing arc plate; 4, the wiping unit; 40, the rotating shaft; 41, the friction cylinder; 42, the structure groove; 43, the driving tooth; 44, the driven tooth; 5, the loudspeaker assembly; 50, the loudspeaker; 51, the sound production groove; 52, the containing cavity; 53, the sliding plate; 54, the clamping ball; 55, the reset push spring; 6, the driving unit; 60, the driving screw; 61, the driven shaft; 62, the driven gear; 63, the driven rack; 64, the transmission shaft; 7, the outward expansion assembly; 70, the outward connecting plate; 71, the bent plate; 72, the fixed plate; 73, the expansion shaft; 74, the inserting groove; 75, the inserting plate. DETAILED DESCRIPTION

[0040] The following Figures 1 to 14 The embodiments of the present application are described in detail.

[0041] The embodiments of the present application disclose a mine distributed optical fiber temperature measurement fire warning device, which is applied to the process of real-time monitoring of mine environment, can expand the detection range through the up and down movement of the optical fiber, when the fire is detected, the liquid crystal plate and the loudspeaker work cooperatively to help the rescue personnel quickly locate the fire point and guide the mine personnel to evacuate in an orderly manner. Further, the present application can also keep the optical fiber clean through the wiping unit to ensure the accuracy and reliability of the detection data; through the outward expansion assembly, the connection of multiple devices is realized, only one driving device can drive multiple devices in different directions, and the applicability and convenience of the device are improved.

[0042] Embodiment one: refer to Figure 1 and Figure 2 As shown, it comprises a main plate 1, a fixed bolt 10, a horizontal groove 11, a clamping unit 2, a guard plate 12, a vertical groove 13, a rectangular plate 14 and a liquid crystal plate 15, a plurality of fixed bolts 10 are arranged on the upper end of the main plate 1, the main plate 1 can be fixed on the top of the mine through the fixed bolts 10; a plurality of horizontal grooves 11 are arranged on the main plate 1 along the extension section, the clamping unit 2 for clamping the optical fiber is arranged in the horizontal groove 11, and the optical fiber is driven to move up and down to increase the detection range of the optical fiber.

[0043] The main plate 1 is provided with a guard plate 12 on both sides, a plurality of vertical grooves 13 corresponding to the horizontal grooves 11 are formed between the main plate 1 and the guard plate 12, a rectangular plate 14 is slidably arranged in the vertical grooves 13, a mounting groove is formed in the rectangular plate 14, and a liquid crystal plate 15 is mounted in the mounting groove. The liquid crystal plate 15 is used for displaying warning lights, that is, when detection is performed, the clamping unit 2 drives the optical fiber to descend from between the main plate 1 and the guard plate 12 into the mine tunnel to increase the detection range. At this time, the liquid crystal plate 15 is driven by the guard plate 12 to move out of the corresponding vertical groove 13. When the optical fiber detects a fire, the liquid crystal plate 15 can display warning lights at this time. External personnel enter the mine tunnel to extinguish the fire, and the warning light can assist personnel to quickly identify the fire location and extinguish the fire. In addition, when a fire occurs, there is a lot of smoke in the mine tunnel, and the descending of the rectangular plate 14 and the liquid crystal plate 15 can enable the personnel in the mine to see the light and evacuate.

[0044] The rectangular plate 14 is located in the vertical groove 13 in the initial state to prevent the liquid crystal plate 15 from covering the dust in the mine.

[0045] Referring to Figure 3 and Figure 4 , that is, the clamping unit 2 for clamping the optical fiber. Specifically, the clamping unit 2 includes a sliding block 20, a swing plate 21, a swing ring 22, and an arc-shaped plate 23. The sliding block 20 is slidably arranged in the horizontal groove 11. The lower end of the sliding block 20 is hingedly connected with the swing plate 21. The lower end of the swing plate 21 is provided with the swing ring 22. When the sliding block 20 is driven by an external force, the corresponding swing plate 21 and swing ring 22 can be moved in the corresponding horizontal groove 11.

[0046] The two adjacent swing rings 22 form a group. The swing ring 22 on one side of the group is provided with an arc-shaped groove on the opposite side. The swing ring 22 on the other side is provided with the arc-shaped plate 23 which is slidably inserted into the corresponding arc-shaped groove. The arc-shaped plate 23 can rotate in the corresponding arc-shaped groove. When the two sliding blocks 20 move in opposite directions, the two swing plates 21 will swing around the rotation axis of the arc-shaped plate 23, so that the sliding block 20 moves in the opposite direction, and the swing plate 21 drives the swing ring 22 to move downward. When the two sliding blocks 20 move in the opposite direction, the swing plate 21 moves upward.

[0047] In use, the optical fiber can be inserted into the corresponding swing ring 22, so that the swing ring 22 can drive the inserted optical fiber to move up and down. When there is no one in the mine tunnel, the swing ring 22 drives the optical fiber to descend, thereby increasing the detection distance of the optical fiber. When there is someone working in the mine, the optical fiber is retracted to avoid blocking the personnel and equipment, thereby preventing the optical fiber from being damaged due to collision.

[0048] Continuing to refer to Figure 4As shown, the swing circle 22 is further provided with a mounting assembly 3 for mounting the optical fiber; specifically, the mounting assembly 3 includes a through groove 30, a limiting cone 31 and a swing arc plate 32, the through groove 30 is opened on the outer side of the swing circle 22, a limiting cone 31 is mounted on the inner side wall of the through groove 30 on one side of the swing circle 22, and the limiting cone 31 is hinged with a swing arc plate 32 through a torsional spring, one side of the swing arc plate 32 is in contact with the corresponding inner side wall of the through groove 30, that is, when the optical fiber is mounted, the corresponding swing arc plate 32 is first opened to no longer block the through groove 30, then the optical fiber is inserted into the swing circle 22 from the through groove 30, then the swing arc plate 32 swings under the driving of the corresponding torsional spring to continue to block the through groove 30, at this time, the swing circle 22 on one side can drive the optical fiber to move in the up-down direction by means of the swing arc plate 32.

[0049] When the swing arc plate 32 is pushed away when the optical fiber is disassembled, the optical fiber can be taken out from the through groove 30 on the swing circle 22.

[0050] The skilled in the art can install a flexible rubber pad on the inner diameter of the swing circle 22 and the swing arc plate 32 to reduce the friction between the optical fiber and the swing circle 22 and the swing arc plate 32, and avoid damage to the optical fiber.

[0051] Referring to Figure 5 and Figure 6 As shown, the swing circle 22 is further provided with a mounting assembly 3 for mounting the optical fiber; specifically, the mounting assembly 3 includes a through groove 30, a limiting cone 31 and a swing arc plate 32, the through groove 30 is opened on the outer side of the swing circle 22, a limiting cone 31 is mounted on the inner side wall of the through groove 30 on one side of the swing circle 22, and the limiting cone 31 is hinged with a swing arc plate 32 through a torsional spring, one side of the swing arc plate 32 is in contact with the corresponding inner side wall of the through groove 30, that is, when the optical fiber is mounted, the corresponding swing arc plate 32 is first opened to no longer block the through groove 30, then the optical fiber is inserted into the swing circle 22 from the through groove 30, then the swing arc plate 32 swings under the driving of the corresponding torsional spring to continue to block the through groove 30, at this time, the swing circle 22 on one side can drive the optical fiber to move in the up-down direction by means of the swing arc plate 32.

[0052] The outer side of the swing circle 22 is provided with a wiping unit 4 for wiping the dust on the outer side of the optical fiber; specifically, the wiping unit 4 includes a rotating shaft 40, a friction cylinder 41, a structure groove 42, a driving tooth 43 and a driven tooth 44, a plurality of rotating shafts 40 are rotatably inserted on one side of the swing circle 22, the end of the rotating shaft 40 extends to the other side of the swing circle 22, that is, the rotating shaft 40 can rotate under the limitation of the swing circle 22 when it is driven by external force.

[0053] The arc-shaped plate 23 is provided with a structure groove 42 at one end of the arc-shaped groove, a plurality of driving teeth 43 are arranged on the inner diameter of the structure groove 42, and one side of the rotating shaft 40 is rotatably arranged in the corresponding structure groove 42, and a plurality of driven teeth 44 distributed along the axis are arranged on the outer side of the rotating shaft 40. That is, when the swing plate 21 drives the swing ring 22 to move up and down with the optical fiber, the rotating directions of the two swing rings 22 are inconsistent, that is, the arc-shaped plate 23 rotates in the arc-shaped groove, so that the arc-shaped plate 23 can drive the rotating shaft 40 to rotate through the cooperation of the corresponding driving teeth 43 and the driven teeth 44, so that the rotating shaft 40 can rotate and wipe the outer side of the optical fiber through the friction cylinder 41, so as to prevent the optical fiber from being not sensitive due to dust accumulation on the outer side during long-term use. As can be seen from the above, when the optical fiber is lifted or lowered by the swing ring 22, it can be wiped by the friction cylinder 41, realizing periodic cleaning effect.

[0054] The outer surface of the friction cylinder 41 is of flexible material, so that the optical fiber will not be abraded during wiping.

[0055] In actual operation, the friction cylinder 41 is only distributed above the optical fiber and has a gap on the outer side, which not only ensures effective cleaning of dust on the outer side of the optical fiber, but also does not affect the detection of the lower end of the mine and the surrounding environment by the optical fiber, ensuring accurate and reliable detection data. At the same time, when the swing plate 21 drives the swing ring 22 to move up and down, the rotating friction cylinder 41 is indirectly caused to produce relative displacement with the optical fiber, so that the friction cylinder 41 can fully and comprehensively wipe the outer side of the optical fiber, and the surface of the optical fiber is always kept clean, providing strong guarantee for stable operation of mine fire detection work.

[0056] Referring to Figure 7 and Figure 8 , that is, the vertical groove 13 is also provided with a loudspeaker assembly 5 for emitting alarm sound; specifically, the loudspeaker assembly 5 includes a loudspeaker 50, a sound emitting groove 51, a containing cavity 52, a sliding plate 53, a clamping ball 54 and a reset spring 55. The containing groove is arranged on the outer wall of the vertical groove 13, the loudspeaker 50 is arranged in the containing groove, and the sound emitting groove 51 is arranged on the outer side of the guard plate 12 and penetrates the vertical groove 13.

[0057] When a fire occurs, the loudspeaker 50 can emit alarm sound so that the personnel in the mine can quickly know the fire alarm, and the alarm sound can be transmitted to the mine through the vertical groove 13 and the sound emitting groove 51.

[0058] The rectangular plate 14 is further provided with a containing cavity 52, one side of the containing cavity 52 is connected to the outside of the rectangular plate 14, a sliding plate 53 is slidably arranged in the containing cavity 52, one side of the sliding plate 53 is provided with a clamping ball 54 extending to one side of the rectangular plate 14, and a return spring 55 is further arranged between the sliding plate 53 and the inner wall of the containing cavity 52, that is, the sliding plate 53 can drive the clamping ball 54 to reciprocate in the containing cavity 52, when the rectangular plate 14 is located in the vertical groove 13, at this time, the clamping ball 54 is indirectly pushed into the corresponding sound generating groove 51 by the corresponding return spring 55, preventing dust from entering the vertical groove 13 and the loudspeaker 50 through the sound generating groove 51 to block the loudspeaker 50, after the rectangular plate 14 is lowered, the corresponding clamping ball 54 and the sliding plate 53 can be separated from the corresponding sound generating groove 51, so that the alarm sound emitted by the loudspeaker 50 can be transmitted to the mine through the sound generating groove 51.

[0059] After the rectangular plate 14 is retracted into the vertical groove 13, the clamping ball 54 can be indirectly inserted into the sound generating groove 51 again, if there is dust in the sound generating groove 51 at this time, the dust can be pushed out by the corresponding clamping ball 54, so that the clamping ball 54 can play a role in dredging the sound generating groove 51, and the clamping ball 54 can be fixed to the rectangular plate 14 by clamping the sound generating groove 51, so that the rectangular plate 14 will not accidentally fall when it is stored in the vertical groove 13 for a long time.

[0060] The inner wall of the vertical groove 13 is further provided with a wiping block corresponding to the liquid crystal panel 15 and made of rubber, that is, when the rectangular plate 14 is retracted or moved out of the vertical groove 13, the dust attached to the liquid crystal panel 15 can be wiped off by the wiping block, so that the alarm lamp displayed on the liquid crystal panel 15 can be clearly seen by people.

[0061] Referring to Figure 9 and Figure 10 and Figure 11 It is shown that the mainboard 1 is further provided with a driving unit 6 for driving the sliding block 20 and the rectangular plate 14 to move, specifically, the driving unit 6 includes a driving screw 60, a driven shaft 61, a driven gear 62, a driven rack 63 and a transmission shaft 64, the driving screw 60 is rotatably arranged in the horizontal groove 11, and the outer side of the driving screw 60 is rotatably arranged through the corresponding two sliding blocks 20 and is in threaded connection with them, that is, the outer side of the driving screw 60 is symmetrically provided with two threads, when the driving screw 60 rotates, it can drive the corresponding sliding block 20 to move in the horizontal groove 11 through the threads, so that the sliding block 20 can move in opposite directions.

[0062] The vertical slot 13 also rotates a driven shaft 61, one side of the drive screw 60 rotates and penetrates into the vertical slot 13 and is connected with the driven shaft 61 through the belt drive, and the driven shaft 61 is sleeved with a driven gear 62 outside, one side of the rectangular plate 14 is provided with a driven rack 63 engaged with the driven gear 62, the drive screw 60 can drive the driven shaft 61 to rotate synchronously through the belt drive, and the driven shaft 61 can drive the rectangular plate 14 to move up and down in the vertical slot 13 through the cooperation of the driven gear 62 and the driven rack 63, that is, when the sliding block 20 indirectly drives the optical fiber to move upward, the rectangular plate 14 also drives the liquid crystal plate 15 to move downward at this time, and the loudspeaker assembly 5 can also work, and when the sliding block 20 indirectly drives to move upward, the rectangular plate 14 also synchronously drives the liquid crystal plate 15 to retract.

[0063] The main plate 1 also rotates and penetrates a plurality of transmission shafts 64 located in the corresponding horizontal slot 11, the transmission shafts 64 on both sides of the main plate 1 penetrate out of the main plate 1, and one side of the transmission shaft 64 located in the horizontal slot 11 is connected with the corresponding drive screw 60 through the bevel gear transmission, that is, one side of the transmission shaft 64 can be connected with the main shaft of the external drive motor, and one side of the transmission shaft 64 is driven to rotate by the external drive motor, so that the transmission shaft 64 can drive a plurality of drive screws 60 to rotate through the gear transmission.

[0064] In the specific implementation process, when there is no one in the mine and the environment needs to be monitored in real time, the clamping unit 2 can be controlled to make the optical fiber descend, expand the detection range, and realize omnidirectional and dead angle-free environmental monitoring. Once a fire occurs, the personnel enter the mine to put out the fire, the eye-catching light of the liquid crystal plate 15 and the clear alarm sound of the loudspeaker 50 cooperate with each other, which can help the rescue personnel to quickly locate the fire point, and effectively solve the problem that the communication equipment is limited and the fire point is difficult to find in the closed environment of the mine.

[0065] In addition, the electric control equipment connected with the external drive motor is installed in the mine, which can further improve the emergency response efficiency. When a fire occurs in the mine, the staff triggers the electric control equipment, and the external drive motor immediately drives the transmission shaft 64 to rotate and lower the optical fiber. After the optical fiber detects the fire source, the loudspeaker 50 immediately issues an alarm, and the liquid crystal plate 15 synchronously displays the warning picture, and the two work together to indicate the evacuation direction for the personnel in the mine, like a dynamic sign, guiding the personnel to quickly and orderly evacuate the mine, and maximizing the safety of personnel life.

[0066] Embodiment two: refer to Figure 12 , Figure 13 and Figure 14As shown, on the basis of embodiment one, in order to connect two mainboards 1 in different directions at the bending part in the mine, an outer extension assembly 7 is further arranged on one side of the mainboard 1. Specifically, the outer extension assembly 7 comprises an outer connecting plate 70, a bending plate 71, a fixing plate 72, an extension shaft 73, an insertion slot 74 and an insertion plate 75. The outer connecting plate 70 is located on one side of the mainboard 1, and four corners of the upper end of the outer connecting plate 70 are provided with the bending plate 71. The two sides of the mainboard 1 are also provided with the fixing plate 72, which is connected with the adjacent bending plate 71 by bolt insertion. That is, the bending plate 71 and the fixing plate 72 are fixed together by bolts, which can indirectly limit the outer connecting plate 70 on one side of the mainboard 1. According to the actual use requirement, the other device is connected with the fixing plate 72 through the bending plate 71 by bolt insertion, which can achieve the mutual connection of the device in different directions.

[0067] The cross slot is provided in the outer connecting plate 70, and the extension shaft 73 is rotatably arranged in the four extension sections of the cross slot. The corresponding end of the extension shaft 73 is connected by bevel gear transmission. The other end of the extension shaft 73 is provided with the insertion slot 74, and the end of the transmission shaft 64 extending out of the outer wall of the mainboard 1 is provided with the insertion plate 75, which is inserted into the corresponding insertion slot 74.

[0068] That is, when the outer connecting plate 70 is installed on one side of the mainboard 1, the insertion plate 75 on the side corresponding to the transmission shaft 64 will be inserted into the corresponding insertion slot 74, so that the main shaft can drive the extension shaft 73 on one side to rotate through the cooperation of the insertion plate 75 and the insertion slot 74. Then the extension shaft 73 can drive the remaining extension shafts 73 to rotate through bevel gear transmission, so that when the remaining devices are installed on the remaining three surfaces of the outer connecting plate 70, they can be driven by the extension shaft 73. Therefore, only one driving device is needed to drive multiple devices in different directions during the implementation process.

[0069] It should be noted that if the transmission chain is too long and a single external driving motor cannot drive multiple devices at the same time, the transmission shaft 64 and the extension shaft 73 will not be connected together through the insertion slot 74 and the insertion plate 75 when the next device is installed. Then the end of the extension shaft 73 is connected with the external driving motor, so that the external driving motor can directly drive the extension shaft 73 to rotate, which can provide enough rotating torque for the extension shaft 73 to drive the connected device to work.

[0070] When working: first, fix the mainboard 1 on the top of the mine through the fixing bolt 10 to complete the basic installation of the device.

[0071] Second step, the external drive motor is controlled to drive the transmission shaft 64 to rotate, and then drive the drive screw 60 to rotate through the bevel gear transmission; the drive screw 60 outside the symmetrical thread drives the sliding block 20 to move in the transverse groove 11 in the opposite direction, and at the same time, through the cooperation of the belt drive, the driven gear 62 and the driven rack 63, the rectangular plate 14 is driven to move up and down in the vertical groove 13; when there is no one in the mine, the drive screw 60 drives the sliding block 20 to move relatively, the swing plate 21 drives the swing ring 22 to move downward, and the optical fiber is lowered accordingly, thereby increasing the detection distance; when there is someone working in the mine, the drive screw 60 drives the sliding block 20 to move reversely, the swing plate 21 drives the swing ring 22 to move upward, and the optical fiber is retracted, thereby avoiding blocking the personnel carrying equipment.

[0072] Third step, when the optical fiber is inserted into the swing ring 22, the installation assembly 3 on the swing ring 22 is opened, that is, the swing arc plate 32 is opened, the optical fiber is inserted into the swing ring 22 from the through groove 30, and then the swing arc plate 32 is reset to block the through groove 30 under the action of the torsional spring, thereby realizing the installation of the optical fiber.

[0073] Fourth step, when the swing plate 21 drives the swing ring 22 to move up and down with the optical fiber, the two swing rings 22 rotate in opposite directions, the arc plate 23 rotates in the arc-shaped groove, the drive gear 43 and the driven gear 44 cooperate to drive the rotating shaft 40 to rotate, and then the friction cylinder 41 outside the rotating shaft 40 rotates to wipe the outside of the optical fiber, thereby keeping the surface of the optical fiber clean.

[0074] Fifth step, when the optical fiber detects a fire, the liquid crystal panel 15 can display a warning light, and the loudspeaker 50 in the vertical groove 13 emits an alarm sound through the sound emitting groove 51, helping external personnel to quickly identify the fire location and perform fire fighting, and guiding the personnel in the mine to evacuate.

[0075] Sixth step, after the rectangular plate 14 is lowered, the clamping ball 54 and the sliding plate 53 are separated from the sound emitting groove 51, so that the alarm sound emitted by the loudspeaker 50 can be transmitted to the mine through the sound emitting groove 51; when the rectangular plate 14 is retracted into the vertical groove 13 again, the clamping ball 54 is inserted into the sound emitting groove 51 again, and if there is dust in the sound emitting groove 51, the dust can be pushed out, and the clamping of the clamping ball 54 to the sound emitting groove 51 plays a fixing role on the rectangular plate 14.

[0076] Seventh step, when the rectangular plate 14 is retracted or moved out of the vertical groove 13, the wiping block on the inner wall of the vertical groove 13 wipes the dust attached to the liquid crystal panel 15, thereby ensuring that the alarm light displayed on the liquid crystal panel 15 is clear and visible.

[0077] In the eighth step, if two main plates 1 in different directions need to be connected at a bending part in the mine tunnel, the outer connecting plate 70 is installed on one side of the main plate 1 through the bending plate 71 and the fixed plate 72 by means of bolt insertion, the insertion plate 75 at the end of the transmission shaft 64 is inserted into the insertion slot 74 of the expansion shaft 73 of the outer connecting plate 70, and only one driving device is used to drive multiple main plates 1 in different directions.

[0078] It is obvious for those skilled in the art that the present application is not limited to the details of the above-mentioned exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting from any point of view.

[0079] In addition, it should be understood that although the present specification is described in terms of embodiments, each embodiment does not contain only one independent technical solution, and the description manner of the specification is only for the sake of clarity, and those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A mine distributed optical fiber temperature measurement fire warning device, comprising a main board (1) and a plurality of fixing bolts (10) arranged at the upper end of the main board (1), characterized in that: The main plate (1) is provided with a plurality of transverse grooves (11) distributed along the extension section, and a clamping unit (2) is arranged in the transverse groove (11) to clamp the optical fiber and move the optical fiber up and down to increase the detection range of the optical fiber; The main plate (1) is provided with a plurality of vertical grooves (13) corresponding to the transverse grooves (11) and arranged between the main plate (1) and the guard plate (12) on both sides of the main plate (1), and a rectangular plate (14) is slidably arranged in the vertical groove (13), the rectangular plate (14) is provided with a mounting groove, and a liquid crystal plate (15) is mounted in the mounting groove and used for displaying warning lights; The clamping unit (2) comprises a sliding block (20) slidably arranged in the transverse groove (11), a swing plate (21) hinged to the lower end of the sliding block (20), and a swing ring (22) arranged at the lower end of the swing plate (21), wherein adjacent two swing rings (22) form a group, one side of the swing ring (22) of the group is provided with an arc-shaped groove, and the other side of the swing ring (22) is provided with an arc-shaped plate (23) slidably inserted into the corresponding arc-shaped groove. When the two sliding blocks (20) move in opposite directions, the two swing plates (21) swing around the rotation axis of the arc-shaped plate (23), so that when the sliding blocks (20) move in opposite directions, the swing plates (21) drive the swing rings (22) to move downward, and when the two sliding blocks (20) move in opposite directions, the swing plates (21) move upward.

2. The mine-used distributed optical fiber temperature measurement fire warning device according to claim 1, characterized in that: A mounting assembly (3) for mounting the optical fiber is further arranged on the swing ring (22), and the mounting assembly (3) comprises a through groove (30) arranged on the swing ring (22), a limiting cone (31) mounted on the inner wall of the through groove (30) on one side of the swing ring (22), and a swing arc plate (32) hinged to the limiting cone (31) by a torsional spring, wherein one side of the swing arc plate (32) is in contact with the inner wall of the corresponding through groove (30).

3. The mine-used distributed optical fiber temperature measurement fire warning device according to claim 1, characterized in that: A wiping unit (4) for wiping dust on the outer side of the optical fiber is arranged at one end of the swing ring (22), and the wiping unit (4) comprises a plurality of rotating shafts (40) rotatably inserted into one side of the swing ring (22), and the end of the rotating shaft (40) extends to one side of the other swing ring (22). The outer side of the rotating shaft (40) is provided with a friction cylinder (41).

4. The mine-used distributed optical fiber temperature measurement fire warning device according to claim 3, characterized in that: One end of the arc-shaped plate (23) facing the arc-shaped groove is provided with a structure groove (42), a plurality of drive teeth (43) are arranged on the inner diameter of the structure groove (42), one side of the rotating shaft (40) is rotatably inserted into the corresponding structure groove (42), and a plurality of driven teeth (44) are arranged on the outer side of the rotating shaft (40) along the axis.

5. The mine-used distributed optical fiber temperature measurement fire warning device according to claim 1, characterized in that: A loudspeaker assembly (5) for emitting an alarm sound is further arranged in the vertical groove (13), and the loudspeaker assembly (5) comprises a containing groove arranged on the outer wall of the vertical groove (13), a loudspeaker (50) mounted in the containing groove, and a sound emitting groove (51) arranged on the outer side of the guard plate (12) and penetrating the vertical groove (13).

6. The mine-used distributed optical fiber temperature measurement fire warning device according to claim 5, characterized in that: The rectangular plate (14) is further provided with a containing cavity (52) penetrating to the outside of the rectangular plate (14) on one side, and a sliding plate (53) is slidably arranged in the containing cavity (52), and the sliding plate (53) is provided with a clamping ball (54) extending to one side of the rectangular plate (14), and the sliding plate (53) and the inner side wall of the containing cavity (52) are further provided with a reset push spring (55) in common.

7. The mine-used distributed optical fiber temperature measurement fire warning device according to claim 6, characterized in that: The inner side wall of the vertical groove (13) is further provided with a wiping block corresponding to the liquid crystal plate (15).

8. The mine-used distributed optical fiber temperature measurement fire warning device according to claim 1, characterized in that: The main plate (1) is further provided with a driving unit (6) for driving the sliding blocks (20) and the rectangular plate (14) to move, the driving unit (6) comprises a driving screw rod (60) rotatably arranged in the horizontal groove (11), and the outer side of the driving screw rod (60) rotatably penetrates through the corresponding two sliding blocks (20) and is in threaded connection with the sliding blocks (20); The vertical groove (13) is further rotatably provided with a driven shaft (61), one side of the driving screw rod (60) rotatably penetrates into the vertical groove (13) and is connected with the driven shaft (61) through belt transmission, and the outer side of the driven shaft (61) is sleeved with a driven gear (62), and one side of the rectangular plate (14) is provided with a driven rack (63) engaged with the driven gear (62).

9. The mine-used distributed optical fiber temperature measurement fire warning device according to claim 8, characterized in that: The main plate (1) is further rotatably provided with a plurality of transmission shafts (64) with the end portions located in the corresponding horizontal grooves (11), the transmission shafts (64) on both sides of the main plate (1) penetrate to the outside of the main plate (1), and one side of the transmission shaft (64) located in the horizontal groove (11) is connected with the corresponding driving screw rod (60) through bevel gear transmission.

Images