An alarm device for preventing theft and cutting of cables

Abstract

The present invention discloses an alarm device for preventing theft and cutting of cables, and relates to the technical field of preventing theft and cutting of cables. The device comprises a fixed box, wherein the fixed box is fixedly connected with a plurality of symmetrically distributed connecting frames, and a vibration monitoring module is arranged in the fixed box; a protection box, which is fixedly connected to a side of the connecting frame away from the fixed box, and the cable passes through the protection box; a fixed frame, which is fixedly connected in the protection box; a first conductive member, which is arranged in the protection box; an alarm module, which is arranged in the protection box and is electrically connected to the first conductive member, and the alarm module is used to issue a warning message in a preset abnormal situation or emergency state, in order to deal with the problem of false alarm of cable vibration caused by bird activities. The present invention innovatively combines two vibration detection technologies, and the alarm system will only be activated when both detections confirm that the vibration is abnormal, effectively filtering the vibration caused by non-threatening factors such as birds, and reducing the probability of false alarms.

Description

Technical Field

[0001] The invention relates to the technical field of cable theft prevention, and in particular to an alarm device for cable theft prevention. Background Art

[0002] With the development of social economy, infrastructure such as electricity and communications are vital to national security, economic development and people's lives. As a key carrier for transmitting electric energy and communication signals, the safety of cables directly affects the stable operation of society. However, since cables contain precious metals such as copper, they will become targets of thieves, resulting in theft and malicious damage. In certain circumstances, factors such as complex terrain restrictions or management omissions will cause some cables to be exposed. In this case, the probability of cable theft will increase significantly, and the theft of cables will cause huge economic losses and public safety hazards. In order to solve the above problems, the existing cable anti-theft and cutting devices detect physical intrusion of cables (such as cutting, vibration, etc.) and transmit signals to the monitoring center or directly trigger the alarm device on the scene to achieve cable anti-theft and cutting, such as a distribution network cable anti-theft system with announcement number CN112071003B.

[0003] In the cable installation scenario, since the cable installation structure forms an environment similar to tree branches, the cable will provide a high perch for birds, which is convenient for birds to observe the surrounding environment or find food. However, when birds land on the cables, the cables will vibrate, causing the existing cable anti-theft device to sound an alarm. The birds may be disturbed by the alarm of the cable anti-theft device and quickly move away, causing the cable to vibrate again, thereby frequently triggering the alarm of the cable anti-theft device, resulting in misjudgment of the cable anti-theft device, thereby increasing the workload of maintenance personnel. In addition, long-term false alarms will reduce the response sensitivity of the cable anti-theft device to real threats. Summary of the invention

[0004] In order to overcome the shortcomings mentioned in the above background technology, the present invention provides an alarm device for preventing theft and cutting of cables.

[0005] The present invention is achieved through the following technical solutions:

[0006] An alarm device for preventing theft and cutting of cables, comprising:

[0007] A fixed box, wherein the fixed box is fixedly connected to a plurality of symmetrically distributed connecting frames, and a vibration monitoring module is arranged in the fixed box;

[0008] A protection box, wherein the protection box is fixedly connected to a side of the connection frame away from the fixed box, and the cable passes through the protection box;

[0009] A fixing frame, wherein the fixing frame is fixedly connected to the protection box;

[0010] A first conductive member, wherein the first conductive member is disposed in a protective box;

[0011] An alarm module, the alarm module is arranged in the protection box, the alarm module is electrically connected to the first conductive member, and the alarm module is used to issue a warning message in a preset abnormal situation or emergency state;

[0012] A power supply, which is disposed in the protection box and is used to provide power to the alarm module, and the alarm module is electrically connected to the power supply;

[0013] An elastic member, wherein the elastic member is fixedly connected to the cable and electrically connected to a power source;

[0014] The second conductive member is fixedly connected to a side of the elastic member away from the cable, the second conductive member is in contact with and cooperates with the first conductive member, and a fixing assembly is arranged in the fixing box, and the fixing assembly is used to fix the second conductive member.

[0015] Furthermore, the fixing assembly comprises:

[0016] A C-shaped frame, the C-shaped frame is fixedly connected to one side of the fixed frame, and the umbrella-shaped member is arranged on a side of the C-shaped frame away from the fixed frame;

[0017] A slide bar, the slide bar is slidably connected to the C-shaped frame, the slide bar is slidably matched with the first conductive member, and the slide bar is used to support the first conductive member;

[0018] A plurality of magnetic attracting parts, each of which is arranged in the umbrella-shaped part, and each of which is electrically connected to a power source;

[0019] The third conductive member is fixedly connected to the second conductive member through the insulating member, and the third conductive member is magnetically matched with the magnetic member.

[0020] Furthermore, the fixed frame is slidably connected with a symmetrically arranged sliding plate, the symmetrically arranged sliding plates are all fixedly connected with a first rack, the C-shaped frame is rotatably connected with a gear, the first rack is meshed with the gear on the C-shaped frame, the sliding plate on one side of the fixed frame is fixedly connected with the first conductive member, and the sliding plate on the other side of the fixed frame is fixedly connected with the alarm module, and a stabilizing component is arranged on the fixed frame, and the stabilizing component is used to keep the first conductive member stable during deformation.

[0021] Furthermore, the stabilizing assembly comprises:

[0022] A fixed plate, the fixed plate is fixedly connected to the fixed frame, the fixed plate is provided with straight grooves in an annular array, the straight grooves are slidably connected with sliding members, and the back sides of the sliding members are limitedly matched with the first conductive member;

[0023] A blocking member, the blocking member is slidably connected to the sliding member, and the blocking member is used to limit the first conductive member;

[0024] A rotating ring is rotatably connected to a fixed plate, the rotating ring is provided with an annular array of inclined grooves, the sliding member slidably cooperates with the inclined grooves, the rotating ring is fixedly connected to a gear ring, a sliding plate in a fixed box is fixedly connected to the fixed box with a tension spring, the fixed box is fixedly connected to the tension spring, the sliding plate is fixedly connected to a second rack rack, and the second rack rack meshes with the gear ring.

[0025] Furthermore, the sliding member is fixedly connected to a limit plate, the limit plate is slidably matched with the umbrella-shaped member, the limit plate is used to change the state of the umbrella-shaped member, and the fixed box is provided with a wind detection component for detecting outdoor wind force.

[0026] Furthermore, the wind force detection component comprises:

[0027] A first U-shaped frame, the first U-shaped frame is fixedly connected to the fixed box, the first U-shaped frame is fixedly connected to a protective cover, and the protective cover is a porous structure;

[0028] A fixing piece is fixedly connected to a side of the protective cover away from the first U-shaped frame, a base is fixedly connected to a side of the fixing box close to the first U-shaped frame, and an elastic airbag is fixedly connected between the base and the fixing piece.

[0029] Furthermore, the fixing member is truncated cone-shaped and is used to guide the surrounding wind. The part of the elastic airbag away from the first U-shaped frame is truncated cone-shaped, and the diameter of the fixing member facing the elastic airbag is smaller than the diameter of the elastic airbag facing away from the base.

[0030] Furthermore, the fixing piece and the facing sides of the elastic airbag are commonly fixedly connected with an elastic rope for driving the elastic airbag to reset. The base is provided with a driving component with the same number as the connecting frame. The driving component is used to timely feed back the signal detected by the wind detection component to the protective box.

[0031] Furthermore, the driving assembly comprises:

[0032] A connecting shell, the connecting shell is fixedly connected to the base, the connecting shell is connected to the elastic airbag, and a sealing member is slidably connected in the connecting shell;

[0033] A wire sleeve, the wire sleeve is fixedly connected to the base, and one end of the wire sleeve away from the base is fixedly connected to the protection box;

[0034] The wire core is slidably connected to the wire sleeve, one end of the wire core close to the base is fixedly connected to the seal, and one end of the wire core away from the base is fixedly connected to the second rack frame. The connecting shell is provided with a deceleration component for controlling the moving speed of the seal.

[0035] Furthermore, the deceleration assembly comprises:

[0036] The second U-shaped frame is fixedly connected to the connecting shell; the second U-shaped frame is fixedly connected to the liquid holding shell, the liquid holding shell and the sealing member are slidably matched, the portion of the sealing member located inside the liquid holding shell is provided with a plurality of liquid through holes, and the liquid through holes are fixedly connected with one-way valves with opposite functions, and the apertures of the plurality of liquid through holes are inconsistent.

[0037] Compared with the prior art, the present invention has the following beneficial effects:

[0038] In order to deal with the problem of false alarms of cable vibration caused by bird activities, two vibration detection technologies are combined. The alarm system will only be activated when both detections confirm abnormal vibrations, effectively filtering out vibrations caused by non-threatening factors such as birds, reducing the probability of false alarms. In addition, the introduction of a closed detection device design not only protects the internal structure from outside prying eyes, but also ensures that changes in climatic conditions do not affect the detection accuracy, thereby improving the accuracy of maintenance personnel's judgment on the safety status of the cable;

[0039] In order to address the problem that existing cable anti-theft devices are prone to false alarms due to cable vibration in strong wind environments, the recognition threshold of the vibration signal of the anti-theft device is dynamically adjusted based on the real-time monitoring of outdoor wind intensity. This can ensure that when the wind is strong enough to cause natural vibration of the cable, the false triggering of alarms caused by wind-induced vibration can be reduced or even avoided, thereby improving the accuracy and work efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0041] Figure 2 It is a partially enlarged schematic diagram of the three-dimensional structure of the present invention;

[0042] Figure 3 It is a three-dimensional structural schematic diagram of the parts in the protection box of the present invention;

[0043] Figure 4 is a schematic diagram of the three-dimensional structure when the second conductive member of the present invention is not in contact with the first conductive member;

[0044] Figure 5 It is a bottom view of the three-dimensional structure of the rotating ring of the present invention;

[0045] Figure 6 It is a three-dimensional structural cross-sectional view of the rotating ring of the present invention;

[0046] Figure 7 It is a three-dimensional structural cross-sectional view of the protective cover of the present invention;

[0047] Figure 8 It is a three-dimensional structural cross-sectional view of the elastic airbag of the present invention;

[0048] Fig. 9 It is a three-dimensional structural cross-sectional view of the connecting shell of the present invention.

[0049] Figure numbers: 1, cable; 10, fixed box; 11, connecting frame; 12, protection box; 13, fixed frame; 14, first conductive member; 15, alarm module; 16, power supply; 17, elastic member; 18, second conductive member; 20, C-shaped frame; 21, umbrella-shaped member; 22, slide bar; 23, magnetic member; 24, third conductive member; 30, sliding plate; 31, first rack frame; 40, fixed plate; 41, sliding member; 42, blocking member; 43, rotating ring; 44, gear ring; 45, second rack frame; 46, limit plate; 50, first U-shaped frame; 51, protective cover; 52, fixed member; 53, base; 54, elastic airbag; 60, connecting shell; 61, sealing member; 62, wire sleeve; 63, wire core; 70, second U-shaped frame; 71, liquid storage shell; 72, liquid through hole. DETAILED DESCRIPTION

[0050] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0051] In order to solve the problem that when birds land on cables, the cables are physically disturbed and vibrate, thereby causing misjudgment of the cable anti-theft device, the present invention innovatively combines two vibration detection technologies. Only when both detections confirm that the vibration is abnormal will the alarm system be activated, effectively filtering out vibrations caused by non-threatening factors such as birds, reducing the probability of false alarms. In addition, the introduction of a closed detection device design not only protects the internal structure from external prying eyes, but also ensures that changes in climatic conditions do not affect the detection accuracy, thereby improving the accuracy of maintenance personnel's judgment on the safety status of the cable.

[0052] like Figure 1-Figure 6As shown, embodiment 1: an alarm device for preventing theft and cutting of cables, comprising a fixed box 10, the fixed box 10 is fixedly connected to a plurality of symmetrically distributed connecting frames 11, a vibration monitoring module is arranged in the fixed box 10; a protection box 12 is fixedly connected to a side of the connecting frame 11 away from the fixed box 10, and the cable 1 passes through the protection box 12; a fixing frame 13 is fixedly connected to the protection box 12; a first conductive member 14 is arranged in the protection box 12; an alarm module 15 is arranged in the protection box 12 and is electrically connected to the first conductive member 14, and the alarm module 15 is used to detect the presence of a vibration monitoring module in the pre- A warning message is issued in an abnormal situation or emergency state; a power supply 16 is arranged in the protection box 12, and the power supply 16 is used to provide power to the alarm module 15, and the alarm module 15 is electrically connected to the power supply 16; an elastic member 17 is fixedly connected to the portion of the cable 1 located in the protection box 12, and the elastic member 17 is electrically connected to the power supply 16; a second conductive member 18 is fixedly connected to a side of the elastic member 17 away from the cable 1, and the second conductive member 18 is in contact with the first conductive member 14. A fixing component is arranged in the fixing box 10, and the fixing component is used to fix the second conductive member 18.

[0053] like Figure 3-Figure 6 As shown, the fixed assembly includes: a C-shaped frame 20, fixedly connected to one side of the fixed frame 13, an umbrella-shaped member 21 is arranged on the side of the C-shaped frame 20 away from the fixed frame 13; a sliding rod 22, slidably connected to the C-shaped frame 20, the sliding rod 22 and the first conductive member 14 slidingly cooperate, the sliding rod 22 is used to support the first conductive member 14; a plurality of magnetic members 23, all arranged in the umbrella-shaped member 21, and the plurality of magnetic members 23 are electrically connected to the power supply 16; a third conductive member 24, fixedly connected to the second conductive member 18 through an insulating member, the third conductive member 24 and the magnetic member 23 are magnetically cooperated.

[0054] During the placement of the device, the cable 1 is monitored by the vibration monitoring module in the fixed box 10. When a bird lands on the cable 1, the cable 1 will vibrate. When the cable 1 is affected by the vibration, it first drives the elastic member 17 and the second conductive member 18 to vibrate. The vibration monitoring module in the fixed box 10 receives the signal at the first time, but at this time the vibration frequency of the cable 1 fails to make the elastic member 17 and the second conductive member 18 swing to the point where the second conductive member 18 contacts the first conductive member 14. The first conductive member 14 cannot form a passage with the second conductive member 18, and will not trigger the alarm of the alarm module 15. This prevents the vibration monitoring module in the fixed box 10 from causing the alarm module 15 to sound an alarm after receiving the signal, thereby disturbing the birds, causing the birds to quickly move away from the cable 1, causing the cable 1 to vibrate again, thereby reducing the probability of misjudgment.

[0055] When the vibration frequency of the cable 1 exceeds the frequency exemplified above, the second conductive member 18 drives the third conductive member 24 to approach the magnetic member 23, so that the second conductive member 18 contacts the first conductive member 14, thereby forming a passage between the two, thereby realizing power supply to the alarm module 15. After receiving power support, the alarm module 15 transmits a signal to the monitoring center and makes a sound to alert the surrounding people, and through the signal transmitted by the alarm module 15, promptly notifies the maintenance personnel to inspect the location where the alarm is issued, thereby realizing anti-theft and cutting of the cable 1.

[0056] After the second conductive member 18 contacts the first conductive member 14, prompting the alarm module 15 to sound an alarm, the magnetic member 23 adsorbs the third conductive member 24 to fix the positions of the third conductive member 24 and the second conductive member 18, so that the second conductive member 18 will not be easily disconnected after contacting the first conductive member 14. When the maintenance personnel patrol and find that the cable 1 has been stolen, the stolen cable 1 is processed. If the cable 1 has not been stolen, the maintenance personnel disconnect the electrical connection between the magnetic member 23 and the power supply 16, thereby releasing the adsorption and fixation of the third conductive member 24 by the magnetic member 23, so that the elastic member 17 and the second conductive member 18 are reset successively. When the above situation occurs again in the future, the above actions can be repeated.

[0057] When the existing cable anti-theft device encounters a situation where the outdoor wind is strong and sufficient to drive the cable to vibrate, the cable will also transmit the vibration signal to the monitoring center or directly trigger the alarm device on site, which will frequently trigger the cable anti-theft alarm and cause the cable anti-theft device to misjudge. In response to the above-mentioned problems, the present invention proposes an innovative method: based on the real-time monitoring of the outdoor wind intensity, the recognition threshold of the vibration signal of the anti-theft device is dynamically adjusted. This can ensure that when the wind is strong enough to cause natural vibration of the cable, the false triggering of the alarm caused by wind-induced vibration is reduced or even avoided, thereby improving the accuracy and working efficiency of the system.

[0058] like Figure 3-Figure 6 As shown, Example 2: On the basis of Example 1, the fixed frame 13 is slidably connected with symmetrical sliding plates 30, and the symmetrical sliding plates 30 are fixedly connected with a first rack frame 31, the C-shaped frame 20 is rotatably connected with a gear, the first rack frame 31 is meshed with the gear on the C-shaped frame 20, the sliding plate 30 on one side of the fixed frame 13 is fixedly connected with the first conductive member 14, and the sliding plate 30 on the other side of the fixed frame 13 is fixedly connected with the alarm module 15, and a stabilizing component is provided on the fixed frame 13, and the stabilizing component is used to keep the first conductive member 14 stable during deformation.

[0059] like Figure 3-Figure 6As shown, the stabilizing assembly includes: a fixed plate 40, fixedly connected to the fixed frame 13, the fixed plate 40 is provided with straight grooves in an annular array, and sliding members 41 are slidably connected in the straight grooves in the annular array on the fixed plate 40, and the back sides of the sliding members 41 in the annular array are limited by the first conductive member 14; a blocking member 42 is slidably connected to the sliding member 41, and the blocking member 42 is used to limit the first conductive member 14; a rotating ring 43, rotatably connected to the fixed plate 40, the rotating ring 43 is provided with oblique grooves in an annular array, the sliding member 41 slidably cooperates with the oblique grooves on the rotating ring 43, the rotating ring 43 is fixedly connected with a gear ring 44, one of the sliding plates 30 in the fixed box 10 is fixedly connected with a tension spring, and a second rack rack 45 is fixedly connected to the tension spring and the sliding plate 30 in the fixed box 10, and the second rack rack 45 is meshed with the gear ring 44.

[0060] like Figure 3-Figure 6 As shown, the sliding member 41 is fixedly connected to the limit plate 46, the limit plate 46 slidably cooperates with the umbrella-shaped member 21, and the limit plate 46 is used to change the state of the umbrella-shaped member 21. The fixed box 10 is provided with a wind detection component for detecting outdoor wind.

[0061] like Figure 1 , Figure 2 and Figure 7-Figure 9 As shown, the wind force detection assembly includes: a first U-shaped frame 50, fixedly connected to the fixed box 10, the first U-shaped frame 50 is fixedly connected to a protective cover 51, and the protective cover 51 is a porous structure; a fixing member 52, fixedly connected to a side of the protective cover 51 away from the first U-shaped frame 50, a side of the fixed box 10 close to the first U-shaped frame 50 is fixedly connected to a base 53, and an elastic airbag 54 is fixedly connected between the base 53 and the fixing member 52.

[0062] like Figure 7 and Figure 8 As shown, the fixing member 52 is configured to be truncated cone-shaped for guiding the surrounding wind, the portion of the elastic airbag 54 away from the first U-shaped frame 50 is configured to be truncated cone-shaped, and the diameter of the fixing member 52 facing the elastic airbag 54 is smaller than the diameter of the elastic airbag 54 facing away from the base 53.

[0063] like Figure 7 and Figure 8 As shown, the fixing member 52 and the facing sides of the elastic airbag 54 are fixedly connected with an elastic rope for driving the elastic airbag 54 to reset. The base 53 is provided with a driving component with the same number as the connecting frame 11. The driving component is used to timely feed back the signal detected by the wind detection component to the protective box 12.

[0064] like Figure 3-Figure 5 and Figure 7-Figure 9As shown, the driving assembly includes: a connecting shell 60, fixedly connected to the base 53 and connected to the elastic airbag 54, and a sealing member 61 is slidably connected inside the connecting shell 60; a wire sleeve 62, fixedly connected to the base 53, and one end of the wire sleeve 62 away from the base 53 is fixedly connected to the protective box 12; a wire core 63, slidably connected inside the wire sleeve 62, and one end of the wire core 63 close to the base 53 is fixedly connected to the sealing member 61, and one end of the wire core 63 away from the base 53 is fixedly connected to the second rack frame 45, and the connecting shell 60 is provided with a deceleration assembly for controlling the moving speed of the sealing member 61.

[0065] like Figure 8 and Fig. 9 As shown, the deceleration assembly includes: a second U-shaped frame 70, fixedly connected to the connecting shell 60; the second U-shaped frame 70 is fixedly connected to a liquid containing shell 71, the liquid containing shell 71 is slidably matched with the sealing member 61, and the portion of the sealing member 61 located inside the liquid containing shell 71 is provided with at least two liquid through holes 72, and at least two liquid through holes 72 are fixedly connected with one-way valves with opposite functions, and the apertures of the at least two liquid through holes 72 are inconsistent.

[0066] When the outdoor wind is strong enough to drive the cable 1 to vibrate, the outdoor wind enters the protective cover 51 and squeezes the elastic airbag 54. As the diameter of the lower side of the fixing member 52 is smaller than the diameter of the upper side of the elastic airbag 54, the outdoor wind is guided to increase the contact area between the outdoor wind in the protective cover 51 and the elastic airbag 54, thereby increasing the sensitivity of the elastic airbag 54. When the elastic airbag 54 is squeezed by the outdoor wind, it is deformed (the elastic rope is pulled during the deformation of the elastic airbag 54), and the gas between the elastic airbag 54 and the base 53 is squeezed into all the connecting shells 60.

[0067] The outdoor wind entering the connecting shell 60 immediately drives the seal 61 to move downward. During the downward movement of the seal 61, the one-way valve in the large-aperture liquid hole 72 is in an open state, and the one-way valve in the liquid hole 72 is in a closed state. When the seal 61 moves downward, it drags the wire core 63, so that the other end of the wire core 63 pulls the second rack rack 45. The movement of the second rack rack 45 drives the sliding plate 30 to move (the tension spring is stretched during the movement of the sliding plate 30). The sliding plate 30 drives the sliding plate 30 on the other side and the second rack rack 45 to move synchronously through the engagement of the second rack rack 45 and the gear. The two sliding plates 30 move toward each other, squeeze the first conductive member 14, and expand the circle in the middle of the first conductive member 14 outward, thereby changing the contact range between the second conductive member 18 and the middle of the first conductive member 14, and changing the contact range between the first conductive member 14 and the second conductive member 18 according to the wind force.

[0068] During the movement of the second rack rack 45, the rotating ring 43 is driven to rotate through the gear ring 44, so that all the inclined grooves on the rotating ring 43 squeeze the sliding member 41. During the sliding of the sliding member 41, it moves outward along the straight groove of the fixed plate 40, so that the sliding member 41 pulls the first conductive member 14. Through the back movement of all the sliding members 41 on the fixed plate 40, the diameter of the middle circle of the first conductive member 14 is expanded in a circumferentially equidistant manner, so that the middle circle of the first conductive member 14 can still remain circular after expansion.

[0069] In the process of changing the diameter of the middle circle of the first conductive member 14, all the sliding members 41 on the fixed plate 40 drive the limit plate 46 to move in the process of moving backwards. The limit plate 46 pulls the lower side of the umbrella-shaped member 21 to increase the range of the umbrella-shaped member 21, thereby increasing the contact range between the magnetic member 23 and the third conductive member 24, thereby achieving the adjustment of the fixed range of the third conductive member 24 according to the wind force.

[0070] When the outdoor wind gradually disappears, the cable 1 slowly stops vibrating, and the elastic airbag 54 is gradually reset under the action of the elastic rope, and the pressure in the elastic airbag 54 and the base 53 is gradually restored, so that all the seals 61 are reset upward. During the process of the seal 61 resetting upward, the wire core 63 is no longer pulled. When the seal 61 moves upward along the liquid holding shell 71 to reset, the one-way valve in the small-diameter liquid hole 72 is opened, and the one-way valve in the large-diameter liquid hole 72 is closed. The flow difference between the two liquid holes 72 reduces the speed of the seal 61 moving upward, thereby giving the cable 1 time to reset (after the cable 1 is no longer in contact with the outdoor wind, the cable 1 gradually stops vibrating).

[0071] After the outdoor wind disappears and the seal 61 no longer pulls the wire core 63, the sliding plate 30 is driven to reset by the tension spring, and the sliding plate 30 drives the sliding plate 30 on the other side to reset through the engagement of the two second rack racks 45 and the gear, so as to realize the back-to-back movement of the two sliding plates 30. During the back-to-back movement of the two sliding plates 30, the first conductive member 14 is pulled to reduce the diameter of the circle in the middle of the first conductive member 14.

[0072] During the movement of the sliding plate 30, the second rack rack 45 is driven to reset and move. The second rack rack 45 drives the rotating ring 43 to rotate through the gear ring 44. The rotating ring 43 squeezes the sliding member 41 through all the inclined grooves thereon, so that all the sliding members 41 move toward each other along the straight grooves on the fixed plate 40, so that the circle in the middle of the first conductive member 14 is equidistantly reduced. During the reset movement of the sliding member 41, the limit plate 46 is driven to move, and the umbrella-shaped member 21 is no longer pulled. The umbrella-shaped member 21 shrinks under the action of its own elastic force, thereby reducing the fixing range of the third conductive member 24.

[0073] When the above parts are moved and reset to the state shown in the figure, it is the process of handling outdoor wind. When wind appears outdoors again, repeat the above actions.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes may be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. An alarm device for preventing theft and cutting of cables, characterized in that: include: A fixed box (10), the fixed box (10) being fixedly connected to a plurality of symmetrically distributed connecting frames (11), and a vibration monitoring module being arranged in the fixed box (10); A protection box (12), the protection box (12) being fixedly connected to a side of the connection frame (11) away from the fixed box (10), and the cable (1) passing through the protection box (12); A fixing frame (13), wherein the fixing frame (13) is fixedly connected to the protection box (12); A first conductive member (14), wherein the first conductive member (14) is arranged in the protection box (12); An alarm module (15), the alarm module (15) being arranged in the protection box (12), the alarm module (15) being electrically connected to the first conductive member (14), and the alarm module (15) being used to issue a warning message in a preset abnormal situation or emergency state; A power supply (16), the power supply (16) being disposed in the protection box (12), the power supply (16) being used to provide power to the alarm module (15), the alarm module (15) being electrically connected to the power supply (16); An elastic member (17), wherein the elastic member (17) is fixedly connected to the cable (1), and the elastic member (17) is electrically connected to a power source (16); a second conductive member (18), the second conductive member (18) being fixedly connected to a side of the elastic member (17) away from the cable (1), the second conductive member (18) being in contact with and mating with the first conductive member (14), a fixing assembly being arranged in the fixing box (10), the fixing assembly being used to fix the second conductive member (18); The fixing assembly comprises: A C-shaped frame (20), the C-shaped frame (20) being fixedly connected to one side of the fixing frame (13), and the umbrella-shaped member (21) being arranged on a side of the C-shaped frame (20) away from the fixing frame (13); A sliding rod (22), the sliding rod (22) is slidably connected to the C-shaped frame (20), the sliding rod (22) is slidably matched with the first conductive member (14), and the sliding rod (22) is used to support the first conductive member (14); A plurality of magnetic attraction members (23), wherein the magnetic attraction members (23) are all arranged in the umbrella-shaped member (21), and the plurality of magnetic attraction members (23) are all electrically connected to the power source (16); A third conductive member (24), the third conductive member (24) being fixedly connected to the second conductive member (18) via an insulating member, the third conductive member (24) being magnetically coupled to the magnetic member (23); When the cable (1) vibrates, the cable (1) drives the elastic member (17) and the second conductive member (18) to vibrate, and the vibration monitoring module in the fixed box (10) receives the signal immediately. However, at this time, the vibration frequency of the cable (1) fails to make the elastic member (17) and the second conductive member (18) swing to the point where the second conductive member (18) contacts the first conductive member (14). At this time, the vibration frequency of the cable (1) fails to make the first conductive member (14) and the second conductive member (18) form a path, and thus the alarm of the alarm module (15) will not be triggered. When the vibration frequency of the cable (1) continues to increase, the second conductive member (18) drives the third conductive member (24) to approach the magnetic member (23), so that the second conductive member (18) contacts the adjacent first conductive member (14), thereby forming a path between the two and enabling the alarm module (15) to receive power support. The alarm module (15) then transmits the signal to the monitoring center and emits a sound to alert people around and promptly notify maintenance personnel to handle the situation, thereby realizing an alarm when the cable (1) is stolen.

2. The alarm device for preventing theft and cutting of cables according to claim 1 is characterized in that: The fixed frame (13) is slidably connected to symmetrically arranged sliding plates (30), and the symmetrically arranged sliding plates (30) are all fixedly connected to a first rack frame (31). The C-shaped frame (20) is rotatably connected to a gear, and the first rack frame (31) meshes with the gear on the C-shaped frame (20). The sliding plate (30) on one side of the fixed frame (13) is fixedly connected to the first conductive member (14), and the sliding plate (30) on the other side of the fixed frame (13) is fixedly connected to the alarm module (15). A stabilizing component is arranged on the fixed frame (13), and the stabilizing component is used to keep the first conductive member (14) stable during deformation.

3. The alarm device for preventing theft and cutting of cables according to claim 2 is characterized in that: The stabilizing component comprises: A fixed plate (40), the fixed plate (40) being fixedly connected to the fixed frame (13), the fixed plate (40) being provided with straight grooves in an annular array, the straight grooves being slidably connected with sliding members (41), the back sides of the sliding members (41) being limitedly matched with the first conductive member (14); a blocking member (42), the blocking member (42) being slidably connected to the sliding member (41), the blocking member (42) being used to limit the position of the first conductive member (14); A rotating ring (43) is rotatably connected to the fixed plate (40), the rotating ring (43) is provided with an annular array of inclined grooves, the sliding member (41) is slidably matched with the inclined grooves, the rotating ring (43) is fixedly connected to a gear ring (44), a sliding plate (30) in the fixed box (10) is fixedly connected to the fixed box (10) with a tension spring, the fixed box (10) is fixedly connected to the tension spring, the sliding plate (30) is fixedly connected to a second rack frame (45), and the second rack frame (45) is meshed with the gear ring (44).

4. The alarm device for preventing theft and cutting of cables according to claim 3 is characterized in that: The sliding member (41) is fixedly connected to a limit plate (46), the limit plate (46) and the umbrella-shaped member (21) are slidably matched, the limit plate (46) is used to change the state of the umbrella-shaped member (21), and the fixed box (10) is provided with a wind force detection component for detecting outdoor wind force.

5. The alarm device for preventing theft and cutting of cables according to claim 4 is characterized in that: The wind force detection component comprises: A first U-shaped frame (50), the first U-shaped frame (50) being fixedly connected to the fixed box (10), the first U-shaped frame (50) being fixedly connected to a protective cover (51), the protective cover (51) being a porous structure; A fixing member (52) is fixedly connected to a side of the protective cover (51) away from the first U-shaped frame (50), a base (53) is fixedly connected to a side of the fixing box (10) close to the first U-shaped frame (50), and an elastic airbag (54) is fixedly connected between the base (53) and the fixing member (52).

6. The alarm device for preventing theft and cutting of cables according to claim 5, characterized in that: The fixing member (52) is in the shape of a truncated cone and is used to guide the surrounding wind. The portion of the elastic airbag (54) away from the first U-shaped frame (50) is in the shape of a truncated cone. The diameter of the fixing member (52) facing the elastic airbag (54) is smaller than the diameter of the elastic airbag (54) facing away from the base (53).

7. The alarm device for preventing theft and cutting of cables according to claim 6, characterized in that: The fixing member (52) and the elastic airbag (54) are fixedly connected together with an elastic rope on the opposite sides thereof, which is used to drive the elastic airbag (54) to reset. The base (53) is provided with a number of drive components that is the same as the number of the connecting frame (11). The drive components are used to timely feed back the signal detected by the wind detection component to the protection box (12).

8. The alarm device for preventing theft and cutting of cables according to claim 7, characterized in that: The driving assembly comprises: A communication shell (60), the communication shell (60) is fixedly connected to the base (53), the communication shell (60) is connected to the elastic airbag (54), and a sealing member (61) is slidably connected to the communication shell (60); A wire sleeve (62), the wire sleeve (62) being fixedly connected to the base (53), and an end of the wire sleeve (62) away from the base (53) being fixedly connected to the protection box (12); The wire core (63) is slidably connected to the wire sleeve (62), one end of the wire core (63) close to the base (53) is fixedly connected to the sealing member (61), and one end of the wire core (63) away from the base (53) is fixedly connected to the second rack frame (45), and the connecting shell (60) is provided with a deceleration component for controlling the moving speed of the sealing member (61).

9. The alarm device for preventing theft and cutting of cables according to claim 8, characterized in that: The deceleration assembly comprises: A second U-shaped frame (70) is fixedly connected to the communication shell (60); the second U-shaped frame (70) is fixedly connected to a liquid storage shell (71); the liquid storage shell (71) and the sealing member (61) are slidably matched; a portion of the sealing member (61) located inside the liquid storage shell (71) is provided with a plurality of liquid through holes (72); a one-way valve with opposite functions is fixedly connected inside the liquid through hole (72); and the apertures of the plurality of liquid through holes (72) are inconsistent.

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