Fire early warning device for flame-retardant crawler belt

Abstract

The invention relates to the technical field of fire early warning of flame-retardant crawler belts, in particular to a fire early warning device of a flame-retardant crawler belt, which comprises a machine body, a plurality of collecting rollers are fixedly connected to the back wall of the machine body, and a plurality of optical fibers are fixedly connected to the back wall of the machine body; positioning mechanisms are arranged on the collecting rollers, each positioning mechanism comprises a lifting ring, an inflator pump and a positioning magnet, a supporting plate is fixedly connected to the top end of each inflator pump, a round rod is fixedly connected to the top end of each supporting plate, and an abutting ball is fixedly connected to the top end of each round rod; the optical fiber winding device has the advantages that loosening, collapsing and disordered arrangement of optical fibers are effectively avoided, a regular winding state is kept, excessive bending of the optical fibers caused by loosening is reduced, mutual friction and displacement of the optical fibers caused by external vibration are avoided, and the optical fibers can be effectively wound through the flexible buffering effect of the air bag. Direct impact force of external collision and extrusion on the optical fiber is offset, and abrasion of an optical fiber sheath and damage to an internal fiber core are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fire warning of flame-retardant covering, in particular to a fire warning device of flame-retardant covering. BACKGROUND

[0002] In the scenes of industrial production and power transmission, flame-retardant covering such as cable flame-retardant covering is widely used in the safety protection of high-risk areas as a core protective material. Fire hazards are mostly caused by frictional heat in long-term operation of the covering, external heat source invasion or ignition of surrounding combustible materials. Early risk monitoring needs to be achieved through early warning technology. Optical fiber sensing technology is gradually combined with flame-retardant covering to form a fire warning system due to its characteristics of anti-electromagnetic interference and adaptation to harsh environments. The core is to load the temperature sensing optical fiber according to the preset path on the surface of the covering or embed it in the multi-layer structure of the covering. One end of the optical fiber is connected with a temperature sensor (optical fiber temperature sensing detector) to build a global temperature monitoring and warning network. The temperature sensor emits a laser pulse and captures the temperature change signal of the covering along the line by using the temperature sensitive characteristics of Raman scattering or Brillouin scattering in the optical fiber to realize real-time temperature measurement of the covering and the surrounding environment, which becomes an important technical direction of early fire warning in the flame-retardant covering protection system.

[0003] For example, the patent document with publication number CN222618055U discloses an optical fiber temperature sensing detection device. The device realizes winding and storage of the optical cable through the winding shaft cooperating with the mounting bracket. The optical cable can be unwound according to the actual required length to install the temperature sensing probe at a suitable temperature measurement position. The wound optical cable will not be intertwined, effectively avoiding the disorderly connection of the connection port and the host, and can protect the optical cable to a certain extent. Although the above-mentioned application has many beneficial effects, it still has the following deficiencies: in the actual use process, although the excess optical fiber can be wound and arranged by the winding shaft, the wound optical fiber cannot be tightly attached to the surface of the winding shaft, which is easy to cause looseness and collapse, etc., thereby causing disorderly arrangement of the optical fiber and failure to maintain a regular and orderly winding state. Moreover, the optical fiber itself is fragile, and the wound optical fiber is more likely to be damaged when subjected to external factors such as vibration, collision, dust invasion and local extrusion. If the wound optical fiber is loose and disorderly, external vibration is easy to cause mutual friction and bending angle exceeding the standard of the optical fiber, collision or extrusion will directly act on the surface of the optical fiber to cause damage to the sheath, and dust entering the gap between the optical fibers will also aggravate the friction loss. SUMMARY

[0004] In view of the problems in the prior art, the present application provides a fire warning device of flame-retardant covering.

[0005] The technical scheme adopted by the present application to solve the technical problems is: a fire warning device of flame-retardant covering, comprising a machine body, a plurality of bunching rollers are fixedly connected to the back wall of the machine body, and a plurality of optical fibers are fixedly connected to the back wall of the machine body. The positioning mechanism comprises a lifting ring, an inflation cylinder and a positioning magnet, the top end of the inflation cylinder is fixedly connected with a supporting plate, the top end of the supporting plate is fixedly connected with a round rod, the top end of the round rod is fixedly connected with an abutting ball, the bottom end of the inflation cylinder is fixedly connected with symmetrically arranged delivery pipes, the bottom end of each delivery pipe is fixedly connected with an elastic telescopic air bag, symmetrically arranged through grooves are formed in the lifting ring, a plurality of arrayed connecting rods are fixedly connected with the top end of the lifting ring, the top ends of the connecting rods are fixedly connected with a top plate, a lifting plate is slidably connected with the connecting rods, a containing groove is formed in the bottom end of the lifting plate, an abutting groove is formed in the center of the lifting plate, and the bottom end of the lifting ring is fixedly connected with symmetrically arranged connecting magnets.

[0006] Specifically, the excess portions of the optical fibers are all wound on the corresponding collecting rollers.

[0007] Specifically, the lifting ring is slidably connected with the collecting roller, the inflation cylinder is fixedly connected with the top end of the collecting roller, and the positioning magnet is annularly arranged and fixedly connected with the bottom wall of the collecting roller.

[0008] Specifically, the supporting plate is slidably connected inside the containing groove, the round rod and the abutting ball are slidably penetrated through the abutting groove, the abutting ball is made of rubber, and the diameter of the abutting ball is larger than that of the abutting groove.

[0009] Specifically, the delivery pipes are fixedly connected with the top wall of the collecting roller, the top end of the delivery pipe is in a penetrating state with the inflation cylinder, the bottom end of the delivery pipe is in a penetrating state with the elastic telescopic air bag, the top end of the elastic telescopic air bag is fixedly connected with the bottom end of the top wall of the collecting roller, and the elastic telescopic air bag is located inside the cavity formed by the collecting roller and the lifting ring.

[0010] Specifically, the bottom end of each connecting magnet is a south pole, the top end of the positioning magnet is a north pole, and each connecting magnet is magnetically connected with the positioning magnet.

[0011] The present application has the following advantages: Through the cooperation of the collecting roller and the positioning mechanism, the excess portions of the optical fibers close to the connecting end of the machine body can be orderly wound, and after the elastic telescopic air bag is inflated, the optical fibers can be uniformly extruded to tightly adhere to the collecting roller, so that the optical fibers can be effectively prevented from being loose, collapsed and arranged in disorder, and the orderly winding state can be maintained. After the elastic telescopic air bag is inflated, a complete annular structure is formed, which uniformly extrudes the wound optical fibers to tightly adhere to the collecting roller and be arranged in order, reduces the excessive bending of the optical fibers caused by looseness, avoids the mutual friction and displacement of the optical fibers caused by external vibration, and offsets the direct impact force of external collision and extrusion on the optical fibers through the flexible buffering effect of the air bag, thereby reducing the abrasion of the optical fiber sheath and the damage to the internal fiber core. The elastic expansion air bag can be deflated, inflated and lifted by pulling or pressing the lifting plate, and the lifting ring can be moved out and reset, so that the optical fiber can be adjusted or fixed without complex operation, and the operation is very convenient. BRIEF DESCRIPTION OF DRAWINGS

[0012] The application will be further described below in combination with the drawings and embodiments.

[0013] Figure 1 The front view provided by the application is shown in the figure. Figure 2 The back structure diagram of the body provided by the application is shown in the figure. Figure 3 The specific structure diagram of the bunching roller provided by the application is shown in the figure. Figure 4 The separation structure diagram of the lifting ring and the bunching roller provided by the application is shown in the figure. Figure 5 The separation structure diagram of the lifting ring and the elastic expansion air bag provided by the application is shown in the figure.

[0014] In the figure: 1, body; 2, bunching roller; 3, optical fiber; 4, positioning mechanism; 41, lifting ring; 42, air cylinder; 43, positioning magnet; 44, support plate; 45, round rod; 46, abutting ball; 47, conveying pipe; 48, elastic expansion air bag; 49, passing groove; 50, connected rod; 51, top plate; 52, lifting plate; 53, containing groove; 54, abutting groove; 55, connecting magnet. DETAILED DESCRIPTION

[0015] In order to make the technical means, creative features, purposes and effects realized by the application easy to understand, the application will be further described below in combination with specific embodiments.

[0016] Please refer to Figures 1 to 5 The application provides the following technical solutions: Embodiment one: a fire warning device of flame-retardant covering tape, comprising a body 1, a plurality of bunching rollers 2 are fixedly connected to the back wall of the body 1, a plurality of optical fibers 3 are fixedly connected to the back wall of the body 1, and the excess part of the optical fibers 3 is wound on the corresponding bunching roller 2. In use, the body 1 is connected with the alarm terminal through a cable or a network communication mode, then the optical fiber 3 is laid on the surface of the belt or embedded in the multi-layer structure of the belt according to a preset path, the redundant part of the optical fiber 3 close to the connection end of the body 1 is wound on the collection roller 2 respectively, after the orderly collection is completed, the optical fiber 3 is connected with the adapter interface of the body 1, at this time, the body 1 transmits laser pulses through the connected optical fiber 3, the temperature sensitive characteristic of the optical fiber 3 is used to capture the temperature change signals of the belt along the line and the surrounding environment in real time, so that the global temperature monitoring is realized, when the temperature of a certain position of the optical fiber 3 reaches a preset abnormal threshold, the body 1 immediately sends a warning signal to the alarm terminal to complete the fire warning response.

[0017] In the embodiment, the collection roller 2 is provided with the positioning mechanism 4, the positioning mechanism 4 comprises a lifting ring 41, an inflation cylinder 42 and a positioning magnet 43, the top end of the inflation cylinder 42 is fixedly connected with a supporting plate 44, the top end of the supporting plate 44 is fixedly connected with a round rod 45, the top end of the round rod 45 is fixedly connected with an abutting ball 46, the bottom end of the inflation cylinder 42 is fixedly connected with symmetrically arranged delivery pipes 47, the bottom end of each delivery pipe 47 is fixedly connected with an elastic telescopic air bag 48, symmetrically arranged through grooves 49 are formed in the lifting ring 41, a plurality of connected rods 50 are arranged in an array on the top end of the lifting ring 41, the top ends of the connected rods 50 are fixedly connected with a top plate 51, a lifting plate 52 is slidably connected to the connected rods 50, a receiving groove 53 is formed in the bottom end of the lifting plate 52, an abutting groove 54 is formed in the center of the lifting plate 52, and symmetrically arranged connecting magnets 55 are fixedly connected to the bottom end of the lifting ring 41. The lifting ring 41 is slidably connected to the collection roller 2, the inflation cylinder 42 is fixedly connected to the top end of the collection roller 2, the positioning magnet 43 is annularly arranged, the positioning magnet 43 is fixedly connected to the bottom wall of the collection roller 2, the supporting plate 44 is slidably connected inside the receiving groove 53, the round rod 45 and the abutting ball 46 are slidably penetrated through the abutting groove 54, the abutting ball 46 is made of rubber, the diameter of the abutting ball 46 is greater than that of the abutting groove 54, the delivery pipes 47 are fixedly connected to the top wall of the collection roller 2, the top end of the delivery pipe 47 is in a through state with the inflation cylinder 42, the bottom end of the delivery pipe 47 is in a through state with the elastic telescopic air bag 48, the top end of the elastic telescopic air bag 48 is fixedly connected to the bottom end of the top wall of the collection roller 2, the elastic telescopic air bag 48 is located inside the cavity formed by the collection roller 2 and the lifting ring 41, the bottom end of each connecting magnet 55 is a south pole, the top end of the positioning magnet 43 is a north pole, and the connecting magnets 55 are magnetically connected with the positioning magnet 43. In use, the elastic stretchable air bag 48 in the inflated and stretched state is located in the cavity composed of the lifting ring 41 and the collection roller 2, and the elastic stretchable air bag 48 in the inflated and stretched state can press the optical fiber 3 on the collection roller 2, so that the optical fiber 3 after winding is always closely attached to the collection roller 2, which can prevent the optical fiber 3 from being loose after winding, maintains the regular and orderly winding state, and the two elastic stretchable air bags 48 in the inflated and stretched state can form a complete annular air bag, which can protect the optical fiber 3 on the collection roller 2, when the optical fiber 3 needs to be adjusted, the lifting plate 52 can be pulled up, the lifting plate 52 is guided to move by the plurality of connected rods 50, and the lifting plate 52 cannot move the lifting ring 41 in the initial moving process. The upward movement of the lifting plate 52 will cause the top of the abutting groove 54 to press the bottom of the abutting ball 46, at this time the lifting plate 52 will push the abutting ball 46 to move upward together, the upward movement of the abutting ball 46 will drive the round rod 45 and the supporting plate 44 to move upward together, the upward movement of the supporting plate 44 will pull the top of the inflatable cylinder 42 in the contracted state, at this time the top of the inflatable cylinder 42 moves upward together with the supporting plate 44 and the lifting plate 52, and the upward movement of the top of the inflatable cylinder 42 will draw out the gas in the elastic stretchable air bag 48 through the conveying pipe 47. The gas in the elastic stretchable air bag 48 is drawn out and gradually shrinks, the shrunk elastic stretchable air bag 48 will retract to the bottom end of the top wall of the collection roller 2, and will no longer press and position the optical fiber 3, at the same time the lifting plate 52 drives the abutting ball 46 to move to the position abutting with the bottom end of the top plate 51, the abutting ball 46 is made of rubber, so it will deform and retract into the abutting groove 54 under the pressing of the top plate 51, the retraction of the abutting ball 46 will drive the supporting plate 44 to move out of the accommodating groove 53 on the lifting plate 52 through the round rod 45, at this time the upward movement of the lifting plate 52 will not drive the supporting plate 44 to move, and will not drive the top end of the inflatable cylinder 42 to move upward, the top end of the lifting plate 52 will press the bottom end of the top plate 51 in the upward movement process, the top plate 51 will move upward under the pushing of the lifting plate 52, the upward movement of the top plate 51 will drive the lifting ring 41 to move upward on the collection roller 2 through the plurality of connected rods 50, the upward movement of the lifting ring 41 will overcome the magnetic attraction between the connecting magnet 55 and the positioning magnet 43, so that they are separated, at this time the lifting ring 41 will move upward together with the top plate 51 to drive the connecting magnet 55 and the positioning magnet 43 to separate, the upward movement of the lifting ring 41 will no longer surround the circumference of the collection roller 2, and the optical fiber 3 on the collection roller 2 is completely exposed to the air, the retraction of the elastic stretchable air bag 48 and the moving out of the lifting ring 41 can be performed in batches, the whole operation can be realized by moving the lifting plate 52 only, and the operation convenience is excellent, at this time the optical fiber 3 can be adjusted, when it needs to be reset, only the lifting plate 52 needs to be pressed, the bottom end of the lifting ring 41 will be pressed by the lifting plate 52 in the initial downward movement process, so that the lifting ring 41 moves downward, the lifting ring 41 will gradually cover the collection roller 2 by moving downward on the collection roller 2,When the bottom of the lifting plate 52 moves down to the point where the abutment groove 54 presses against the top of the abutment ball 46, the support plate 44 moves down together with the lifting ring 41. The downward movement of the support plate 44 presses down and contracts the air cylinder 42. This compression of the air cylinder 42 transmits gas through the delivery pipe 47 to the elastic telescopic airbag 48. The elastic telescopic airbag 48 then expands and slowly surrounds the outer ring of the gathering roller 2. When the support plate 44 moves down to the point where it cannot move further, the air cylinder 42 enters a state where it cannot contract further, having reached its limit. The downward movement of the lifting plate 52 then causes the abutment ball 46 and the round rod 45 to pass through the abutment groove 54 again, while the support plate 44 returns to the receiving groove 53 on the lifting plate 52. Simultaneously, the lifting ring 41 moves down to the designated position, causing the connecting magnet 55 to magnetically connect with the positioning magnet 43 again. At this point, the lifting ring 41 is reset.

[0018] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of protection claimed by the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fire warning device with flame-retardant coating, comprising a body (1), wherein a plurality of take-up rollers (2) are fixedly connected to the back wall of the body (1), and a plurality of optical fibers (3) are fixedly connected to the back wall of the body (1). Its features are: Each of the gathering rollers (2) is equipped with a positioning mechanism (4), which includes a lifting ring (41), an air cylinder (42), and a positioning magnet (43). A support plate (44) is fixedly connected to the top of the air cylinder (42), a round rod (45) is fixedly connected to the top of the support plate (44), and an abutment ball (46) is fixedly connected to the top of the round rod (45). Symmetrically arranged conveying pipes (47) are fixedly connected to the bottom of the air cylinder (42), and elastic telescopic airbags (48) are fixedly connected to the bottom of each conveying pipe (47). The lifting ring (41) is provided with symmetrically arranged passage slots (49). Multiple connecting rods (50) arranged in an array are fixedly connected to the top of the lifting ring (41). A top plate (51) is fixedly connected to the top of the connecting rods (50). A lifting plate (52) is slidably connected to the connecting rods (50). A receiving slot (53) is provided at the bottom of the lifting plate (52). An abutment slot (54) is provided at the center of the lifting plate (52). A symmetrically arranged connecting magnet (55) is fixedly connected to the bottom of the lifting ring (41).

2. The fire warning device with flame-retardant coating according to claim 1, characterized in that: The excess portion of the optical fiber (3) is wound and wound onto the corresponding take-up roller (2).

3. The fire early warning device with flame-retardant coating according to claim 1, characterized in that: The lifting ring (41) is slidably connected to the gathering roller (2), the air cylinder (42) is fixedly connected to the top of the gathering roller (2), the positioning magnet (43) is specifically ring-shaped and is fixedly connected to the bottom wall of the gathering roller (2).

4. A fire early warning device with flame-retardant coating according to claim 1, characterized in that: The support plate (44) is slidably connected inside the receiving groove (53). The round rod (45) and the abutting ball (46) both slide through the abutting groove (54). The abutting ball (46) is made of rubber and its diameter is larger than the diameter of the abutting groove (54).

5. A fire early warning device with flame-retardant coating according to claim 1, characterized in that: The conveying pipes (47) are all fixedly connected to the top wall of the take-up roller (2). The top end of the conveying pipe (47) is in a through state with the air cylinder (42), and the bottom end of the conveying pipe (47) is in a through state with the elastic telescopic airbag (48). The top end of the elastic telescopic airbag (48) is fixedly connected to the bottom end of the top wall of the take-up roller (2). The elastic telescopic airbag (48) is located inside the cavity formed by the take-up roller (2) and the lifting ring (41).

6. A fire early warning device with flame-retardant coating according to claim 1, characterized in that: The bottom of each connecting magnet (55) is set as the south pole, and the top of each positioning magnet (43) is set as the north pole. Each connecting magnet (55) is magnetically connected to the positioning magnet (43).

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