Cable anti-theft alarm device

Abstract

The invention relates to the technical field of cable anti-theft, in particular to a cable anti-theft alarm device which comprises a cable box, a cabinet door is rotatably connected to the outer side wall of the cable box, a door lock capable of being connected with the cable box is arranged on the outer side wall of the cabinet door, and a connecting base is fixedly connected to the inner side wall, close to the door lock, of the cable box. Two limiting plates are symmetrically connected to the side, close to the cabinet door, of the connecting base in a sliding mode, a first spring is fixedly connected to the side, away from the cabinet door, of the two limiting plates, and two sliding frames are further symmetrically connected to the side, close to the cabinet door, of the connecting base in a sliding mode. The crowbar is clamped by the sliding frame, then the crowbar is shaken, the limiting plate drives the liquid pushing structure, the sliding knife structure cuts the crowbar, meanwhile, a cutting groove is formed in the cutting process and is clamped with a steel cutting knife, the crowbar is prevented from being pulled out, and the time for prying a cabinet door is prolonged.

Description

Technical Field

[0001] This invention relates to the field of cable anti-theft technology, specifically to a cable anti-theft alarm device. Background Technology

[0002] Power cables are a target for theft due to their high metal value. Theft not only causes direct asset loss, but can also lead to power grid paralysis, city power outages, and even electric shock accidents. When cable boxes are vandalized, the cables are usually sealed in pipes under the road, so thieves can only remove the cables by opening the cable box.

[0003] However, thieves usually use crowbars to pry open the cable box cabinet doors. The noise generated by prying open the cable box cabinet doors is minimal and difficult for staff to detect. At the same time, if staff take too long to arrive while the cable box cabinet doors are being pried open, the cables may have already been stolen. There is no good way to prolong the time needed for thieves to steal the cables. Summary of the Invention

[0004] The purpose of this invention is to provide a cable anti-theft alarm device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a cable anti-theft alarm device, comprising a cable box, a cabinet door rotatably connected to the outer wall of the cable box, a door lock that can be connected to the cable box on the outer wall of the cabinet door, a connecting seat fixedly connected to the inner wall of the cable box near the door lock, two limiting plates symmetrically and slidably connected to the connecting seat on the side close to the cabinet door, a spring fixedly connected to the side of the two limiting plates facing away from each other, two sliding frames symmetrically and slidably connected to the connecting seat on the side close to the cabinet door, and both sliding frames being located on the side close to the door lock, a sliding blade structure installed in the cavity of the sliding frame, capable of cutting objects between the two sliding frames;

[0006] A hydraulic push structure is provided between the sliding frame and the limiting plate, which can drive the sliding blade structure to move.

[0007] Each of the limiting plates is rotatably connected to a push wheel on one side that is close to each other, and the two push wheels are staggered. Each push wheel is symmetrically equipped with gears at both ends, and each gear is provided with a clamping structure on one side. The clamping structure can drive the sliding frame at the corresponding position, so that the two sliding frames clamp the object between them.

[0008] Preferably, the sliding blade structure includes an L-shaped piston tube, which is slidably connected to the bottom of the inner cavity of the sliding frame, and one end of the L-shaped piston tube is slidably connected to the hydraulic thrust structure. A piston rod is slidably connected inside the cavity of the L-shaped piston tube, and a second spring is fixedly connected to the side of the piston rod near the inner wall of the sliding frame. A steel cutter is fixedly connected to the upper end of the piston rod, and the steel cutter can move inside the cavity of the sliding frame.

[0009] Preferably, a sealing plug is fixed to one end of the L-shaped piston tube that passes through the sliding frame, and a sealing ring is fixed to the side of the sealing plug near the sliding frame. A spring three is fixed to the top of the inner cavity of the sealing ring, and a connecting plate is fixed to one end of the spring three. A sealing ball is installed on the side of the connecting plate near the groove on the sealing ring, and the sealing ball can be embedded in the inner wall of the groove on the sealing ring.

[0010] Preferably, the hydraulic thrust structure includes a second sleeve, which is fixedly connected to one side of two limiting plates that are opposite to each other. The inner wall of the second sleeve is slidably connected to a first sleeve, and the first sleeve is fixedly connected to the cabinet door and the connecting seat at the corresponding position. The inner walls of the connecting seat and the cabinet door are provided with liquid guiding cavities, and each liquid guiding cavity is connected to the first sleeve at the corresponding position. At the same time, the liquid guiding cavity is also slidably connected to the L-shaped piston tube at the corresponding position.

[0011] Preferably, two limiting plates are fixedly connected to each of the two limiting plates on opposite sides, and a sliding detector is fixedly connected to the side of each limiting plate near the sleeve.

[0012] Preferably, the clamping structure includes two inclined blocks, which are symmetrically fixed to both ends of the sliding frame and fixed to the opposite sides of the two sliding frames. Each inclined block is slidably connected to an inclined push block on the side away from the sliding frame, and each inclined push block is fixed to an L-shaped rod on the side close to the corresponding gear.

[0013] Preferably, a short rack is slidably connected to one side of the L-shaped rod near the cabinet door, and the short rack can mesh with a gear at the corresponding position. A long rack is fixedly connected to one side of the L-shaped rod near the connecting seat, and the long rack can mesh with a gear at the corresponding position. A sliding seat is slidably connected to one side of both the long rack and the short rack. Several springs are fixedly connected to the side of the sliding seat away from the limiting plate.

[0014] Preferably, two stress relief plates are symmetrically slidably connected to the outer side walls of the cabinet door and the cable box, and the stress relief plates are located on the side near the door lock. A spring is fixedly connected to the inner side wall of each stress relief plate. A connector is fixedly connected to the inner side wall of the cable box, and several cables are installed at the lower end of the connector.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] When the pry bar is inserted into the gap between the connector and the cabinet door, it comes into contact with the limiting plate, pushing the limiting plate away from the pry bar. At the same time, the pry bar comes into contact with the push wheel. When the pry bar is pulled out between the two limiting plates, it will drive the push wheel to rotate. The rotation of the push wheel will cause the sliding block to slide and drive the two sliding frames to clamp the pry bar, making it impossible to pull out. At the same time, the sliding detector will start an alarm. When the pry bar swings left and right between the two limiting plates, it will significantly lift one of the limiting plates and move it. The limiting plate can prevent the pry bar from exerting force normally. At the same time, the limiting plate pushes the corresponding hydraulic push structure, causing the liquid structure to drive the sliding blade structure to come into contact with the pry bar. The sliding blade structure continuously slides and cuts the surface of the pry bar, making the surface of the pry bar more difficult to pull out. At the same time, when the sliding frame cuts off the pry bar, the rotation of the push wheel can push the cut pry bar into the cavity of the cable box, preventing the two limiting plates from getting stuck. Attached Figure Description

[0017] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 This is a cross-sectional view of the cable box of the present invention;

[0020] Figure 3 This is a schematic diagram of the limiting plate of the present invention;

[0021] Figure 4 This is a schematic diagram of the structure of the drive wheel of the present invention;

[0022] Figure 5 This is a cross-sectional view of the limiting plate of the present invention;

[0023] Figure 6 This is a cross-sectional view of the gear structure of the present invention;

[0024] Figure 7 This is a schematic diagram of the sleeve structure of the present invention;

[0025] Figure 8 This is a cross-sectional view of the L-shaped piston tube of the present invention.

[0026] Figure 9 For the present invention Figure 8 Enlarged view of a portion of point A in the middle.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Cable box; 2. Cabinet door; 3. Connector; 4. Cable; 5. Door lock; 6. Connecting seat; 7. Limiting plate; 8. Spring 1; 9. Sleeve 1; 91. Sleeve 2; 10. Liquid guiding chamber; 11. Sliding frame; 12. L-shaped piston tube; 13. Piston rod; 14. Spring 2; 15. Connecting groove; 16. Steel cutter; 17. Sealing plug; 18. Sealing ring; 19. Spring 3; 20. Connecting plate; 21. Sealing ball; 22. Sliding detector; 23. Push wheel; 24. Gear; 25. Short rack; 26. Long rack; 27. L-shaped rod; 28. Inclined push block; 29. ​​Inclined block; 30. Sliding seat; 31. Spring 4; 32. Movable chamber; 33. Unloading plate; 34. Spring 5. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figures 1-9 The present invention provides a technical solution: a cable anti-theft alarm device, including a cable box 1, a cabinet door 2 rotatably connected to the outer side wall of the cable box 1, a door lock 5 that can be connected to the cable box 1 on the outer side wall of the cabinet door 2, a connecting seat 6 fixedly connected to the inner side wall of the cable box 1 near the door lock 5, two limiting plates 7 symmetrically slidably connected to the side of the connecting seat 6 and the cabinet door 2 that are close to each other, a spring 8 fixedly connected to the side of the two limiting plates 7 that are opposite to each other, two sliding frames 11 symmetrically slidably connected to the side of the connecting seat 6 and the cabinet door 2 that are close to each other, and both sliding frames 11 are located on the side close to the door lock 5, and a sliding blade structure is installed in the cavity of the sliding frame 11, which can cut objects between the two sliding frames 11;

[0031] A hydraulic push structure is provided between the sliding frame 11 and the limiting plate 7, which can push the sliding knife structure to move;

[0032] Each limiting plate 7 has a rotatably connected push wheel 23 on one side that is close to each other, and the two push wheels 23 are staggered. Each push wheel 23 has a gear 24 symmetrically installed at both ends. Each gear 24 has a clamping structure on one side, which can drive the corresponding sliding frame 11, so that the two sliding frames 11 clamp the object between them.

[0033] For details, please refer to Figure 1The cable box 1 and the cabinet door 2 are connected by a pivot on the left side. Then, the cabinet door 2 and the cable box 1 are locked by the door lock 5 (the door lock 5 is existing technology, so it will not be described in detail). The outer side of the push wheel 23 is engraved with textures to increase friction, which can generate a strong drag force on objects such as crowbars.

[0034] The sliding blade structure includes an L-shaped piston tube 12, which is slidably connected to the bottom of the inner cavity of the sliding frame 11. One end of the L-shaped piston tube 12 is slidably connected to the hydraulic thrust structure. A piston rod 13 is slidably connected inside the cavity of the L-shaped piston tube 12. A spring 14 is fixedly connected to the side of the piston rod 13 near the inner wall of the sliding frame 11. A steel cutter 16 is fixedly connected to the upper end of the piston rod 13, and the steel cutter 16 can move inside the cavity of the sliding frame 11. A connecting groove 15 is provided at the upper end of the piston rod 13, so that the steel cutter 16 can slide together with the piston rod 13.

[0035] Among them, a sealing ring 18 is fixedly connected to the side of the sealing plug 17 near the sliding frame 11, a spring 3 19 is fixedly connected to the top of the inner cavity of the sealing ring 18, a connecting plate 20 is fixedly connected to one end of the spring 3 19, and a sealing ball 21 is installed on the side of the connecting plate 20 near the groove of the sealing ring 18, and the sealing ball 21 can be embedded in the inner wall of the groove of the sealing ring 18.

[0036] The hydraulic thrust structure includes a second sleeve 91, which is fixedly connected to the two limiting plates 7 on opposite sides. The inner wall of the second sleeve 91 is slidably connected to a first sleeve 9, and the first sleeve 9 is fixedly connected to the cabinet door 2 and the connecting seat 6 at the corresponding position. The inner walls of the connecting seat 6 and the cabinet door 2 are both provided with liquid guiding cavities 10, and each liquid guiding cavity 10 is connected to the first sleeve 9 at the corresponding position. At the same time, the liquid guiding cavity 10 is also slidably connected to the L-shaped piston tube 12 at the corresponding position.

[0037] Two limit plates 7 are fixedly connected to each other on the opposite side of the two limit plates 7. A sliding detector 22 is fixedly connected to the side of each limit plate 7 near the sleeve 9. The two limit plates 7 are in contact with each other. When the limit plates 7 move, the sliding detector 22 will be activated and alarm.

[0038] The clamping structure includes two inclined blocks 29, which are symmetrically fixed at both ends of the sliding frame 11 and fixed on the opposite sides of the two sliding frames 11. Each inclined block 29 is slidably connected to an inclined push block 28 on the side away from the sliding frame 11, and each inclined push block 28 is fixedly connected to an L-shaped rod 27 on the side close to the corresponding gear 24.

[0039] Among them, a short rack 25 is slidably connected to the side of the L-shaped rod 27 near the cabinet door 2, and the short rack 25 can mesh with the gear 24 at the corresponding position. A long rack 26 is fixedly connected to the side of the L-shaped rod 27 near the connecting seat 6, and the long rack 26 can mesh with the gear 24 at the corresponding position. A sliding seat 30 is slidably connected to one side of both the long rack 26 and the short rack 25. Several springs 31 are fixedly connected to the side of the sliding seat 30 away from the limiting plate 7. (Reference) Figure 6 Both the connecting seat 6 and the cabinet door 2 have movable cavities 32 of different sizes, so that the short rack 25 and the long rack 26 at the corresponding positions can move normally.

[0040] Specifically, when the pry bar is inserted between the two limiting plates 7 and contacts the two push wheels 23, the pry bar will be pulled by the push wheels 23 to move into the cable box 1. At the same time, the gear 24 slides together with the push wheel 23, causing it to mesh with the long rack 26 or short rack 25 at the corresponding position. At this time, when an external force tries to pull out the pry bar, the force of pulling out the pry bar will drive the push wheel 23 to rotate in the opposite direction. During the reverse rotation of the push wheel 23, it will drive the long rack 26 and the L-shaped rod 27 towards the cavity of the cable box 1. During the movement of the long rack 26 and L-shaped rod 27, the corresponding inclined push block 28 and inclined block 29 will collide and push the inclined block 29 towards the crowbar, so that the sliding frame 11 can hold the crowbar. The crowbar moves further away from the cable box 1 and the greater the clamping force. At the same time, after the sliding knife structure cuts the crowbar, the push wheel 23 will transmit the cut crowbar into the interior of the cable box 1. At the same time, the push wheel 23 will return to the normal rotation direction, so that the sliding frame 11 no longer holds the cut crowbar.

[0041] refer to Figure 3When there is no external interference, the two limiting plates 7 are in a state of mutual abutment. The limiting plates 7 have a chamfered edge on the side near the door lock 5 to facilitate the insertion of a pry bar. When the pry bar is inserted between the two limiting plates 7, the push wheel 23 rotates clockwise and drags the pry bar into the cable box 1. Simultaneously, as the pry bar enters between the two limiting plates 7, it pushes the limiting plates 7 to move in opposite directions. During this movement, it causes sleeve one 9 to slide inside sleeve two 91. Hydraulic oil is present between sleeve two 91 and sleeve one 9. When the volume between sleeve two 91 and sleeve one 9 decreases, the hydraulic oil flows into the fluid guiding chamber 10. Then, the hydraulic oil comes into contact with the sealing plug 17. The hydraulic oil first pushes the L-shaped piston tube 12 towards the pry bar through the seal of the sealing ball 21 and spring three 19. If the steel cutting blade 16 comes into contact with the pry bar during the process, the hydraulic oil cannot further push the L-shaped piston tube 12 to move. This will cause the connecting plate 20 to compress the spring 19, so that the sealing ball 21 will no longer seal the sealing ring 18, allowing the hydraulic oil to flow into the interior of the L-shaped piston tube 12. Then, the hydraulic oil will push the piston rod 13 to move laterally, thereby driving the steel cutting blade 16 to slide and cut the surface of the pry bar. When the pry bar still wobbles between the two limit plates 7, the two limit plates 7 will slide continuously and be reset by the spring 8, so that the steel cutting blade 16 can continuously cut the pry bar. At the same time, the hardness of the steel cutting blade 16 is greater than that of the traditional pry bar, which can damage the pry bar. Also, the steel cutting blade 16 inserted into the cutting groove makes the pry bar more difficult to pull out.

[0042] Two pressure relief plates 33 are symmetrically slidably connected to the outer walls of the cabinet door 2 and the cable box 1. The pressure relief plates 33 are located on the side close to the door lock 5. A spring 5 34 is fixedly connected to the inner wall of each pressure relief plate 33. A connector 3 is fixedly connected to the inner wall of the cable box 1. Several cables 4 are installed at the lower end of the connector 3. When the crowbar is lifted from the connection between the cable box 1 and the cabinet door 2, the pressure relief plate 33 will relieve the force on the support point of the crowbar, thereby inducing the thief to push the crowbar deeper into the interior of the cable box 1.

[0043] Working principle: The cable box 1 is locked to the cabinet door 2 by the door lock 5. Then, when a thief inserts a crowbar into the gap between the connecting seat 6 and the cabinet door 2, it will come into contact with the limiting plate 7 and push the limiting plate 7 away from the crowbar. At the same time, the crowbar will come into contact with the push wheel 23. When the crowbar is pulled out between the two limiting plates 7, it will drive the push wheel 23 to rotate. The rotation of the push wheel 23 will cause the sliding of the inclined push block 28 to drive the two sliding frames 11 to clamp the crowbar, making it impossible to pull out. At the same time, the sliding detector 22 will start the alarm. When the two limiting plates 7 are swayed left and right, a single limiting plate 7 will be lifted significantly and moved. The limiting plate 7 can prevent the crowbar from exerting force normally. At the same time, the limiting plate 7 pushes the corresponding hydraulic propulsion structure, which causes the liquid structure to drive the sliding blade structure to contact the crowbar. This causes the sliding blade structure to continuously slide and cut the surface of the crowbar, making the crowbar surface more difficult to pull out. At the same time, when the sliding frame 11 cuts off the crowbar, the rotation of the push wheel 23 can push the cut-off crowbar into the cavity of the cable box 1, preventing the two limiting plates 7 from getting stuck.

[0044] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A cable anti-theft alarm device, comprising a cable box (1), wherein a cabinet door (2) is rotatably connected to the outer wall of the cable box (1), and a door lock (5) capable of being connected to the cable box (1) is provided on the outer wall of the cabinet door (2), characterized in that: A connecting seat (6) is fixedly connected to the inner wall of the cable box (1) near the door lock (5). Two limiting plates (7) are symmetrically slidably connected to the connecting seat (6) on the side close to the cabinet door (2). A spring (8) is fixedly connected to the side of the two limiting plates (7) away from each other. Two sliding frames (11) are also symmetrically slidably connected to the side of the connecting seat (6) close to the cabinet door (2). Both sliding frames (11) are located on the side close to the door lock (5). A sliding blade structure is installed in the cavity of the sliding frame (11) to cut the object between the two sliding frames (11). A hydraulic push structure is provided between the sliding frame (11) and the limiting plate (7), which can push the sliding knife structure to move; Each of the limiting plates (7) has a push wheel (23) rotatably connected to one side of each other, and the two push wheels (23) are offset from each other. Each push wheel (23) has a gear (24) symmetrically installed at both ends. Each gear (24) has a clamping structure on one side. The clamping structure can drive the corresponding sliding frame (11) so that the two sliding frames (11) clamp the object between them.

2. The cable anti-theft alarm device according to claim 1, characterized in that: The sliding blade structure includes an L-shaped piston tube (12), which is slidably connected to the bottom of the inner cavity of the sliding frame (11). One end of the L-shaped piston tube (12) is slidably connected to the hydraulic thrust structure. A piston rod (13) is slidably connected inside the cavity of the L-shaped piston tube (12). A spring (14) is fixedly connected to the side of the piston rod (13) near the inner wall of the sliding frame (11). A steel cutter (16) is fixedly connected to the upper end of the piston rod (13), and the steel cutter (16) can move inside the cavity of the sliding frame (11).

3. The cable anti-theft alarm device according to claim 2, characterized in that: The L-shaped piston tube (12) is fixed to a sealing plug (17) at one end of the sliding frame (11). A sealing ring (18) is fixed to the side of the sealing plug (17) near the sliding frame (11). A spring three (19) is fixed to the top of the inner cavity of the sealing ring (18). A connecting plate (20) is fixed to one end of the spring three (19). A sealing ball (21) is installed on the side of the connecting plate (20) near the groove on the sealing ring (18), and the sealing ball (21) can be embedded in the inner wall of the groove on the sealing ring (18).

4. The cable anti-theft alarm device according to claim 2, characterized in that: The hydraulic thrust structure includes a second sleeve (91), which is fixedly connected to the two limiting plates (7) on opposite sides. The inner wall of the second sleeve (91) is slidably connected to a first sleeve (9), and the first sleeve (9) is fixedly connected to the cabinet door (2) and the connecting seat (6) at the corresponding position. The inner walls of the connecting seat (6) and the cabinet door (2) are provided with liquid guiding cavities (10), and each liquid guiding cavity (10) is connected to the first sleeve (9) at the corresponding position. At the same time, the liquid guiding cavity (10) is also slidably connected to the L-shaped piston tube (12) at the corresponding position.

5. The cable anti-theft alarm device according to claim 4, characterized in that: Two limiting plates (7) are fixedly connected to each other on the opposite side of the two limiting plates (7), and a sliding detector (22) is fixedly connected to the side of each limiting plate (7) near the sleeve (9).

6. The cable anti-theft alarm device according to claim 1, characterized in that: The clamping structure includes two inclined blocks (29), which are symmetrically fixed at both ends of the sliding frame (11) and fixed on the opposite side of the two sliding frames (11). Each inclined block (29) is slidably connected to an inclined push block (28) on the side away from the sliding frame (11), and each inclined push block (28) is fixed to an L-shaped rod (27) on the side close to the corresponding gear (24).

7. The cable anti-theft alarm device according to claim 6, characterized in that: A short rack (25) is slidably connected to one side of the L-shaped rod (27) near the cabinet door (2), and the short rack (25) can mesh with the gear (24) at the corresponding position. A long rack (26) is fixedly connected to one side of the L-shaped rod (27) near the connecting seat (6), and the long rack (26) can mesh with the gear (24) at the corresponding position. A sliding seat (30) is slidably connected to one side of both the long rack (26) and the short rack (25). Several springs (31) are fixedly connected to the side of the sliding seat (30) away from the limiting plate (7).

8. The cable anti-theft alarm device according to claim 1, characterized in that: Two stress relief plates (33) are symmetrically slidably connected to the outer side walls of the cabinet door (2) and the cable box (1), and the stress relief plates (33) are located on the side close to the door lock (5). A spring five (34) is fixedly connected to the inner side wall of each stress relief plate (33). A connector (3) is fixedly connected to the inner side wall of the cable box (1), and several cables (4) are installed at the lower end of the connector (3).

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