A high voltage power grid power cable protection device

Abstract

The application discloses a high-voltage power grid power cable protection device and belongs to the cable protection field. The high-voltage power grid power cable protection device is provided with a limiting strip fixedly connected to a first mounting ring, the limiting strip is clamped to a second mounting ring, a first clamping block for clamping a cable is slidably connected to the side wall of a first connecting sleeve, a second clamping block for clamping the cable is slidably connected to the side wall of a second connecting sleeve, and a driving mechanism for driving the first clamping block and the second clamping block to slide is arranged on the first connecting sleeve. The first connecting sleeve and the second connecting sleeve and the first clamping block and the second clamping block are arranged, the driving mechanism is synchronously operated when the first mounting ring approaches the second mounting ring, the first clamping block and the second clamping block are both moved to the cable, the position between the cable and the first connecting sleeve and the second connecting sleeve is fixed, the connection of the cable is protected, and the connection of the cable is prevented from being broken.

Description

Technical Field

[0001] This invention relates to the field of cable protection technology, specifically a high-voltage power grid cable protection device. Background Technology

[0002] As a major component of the entire power system, the normal operation of transmission lines is of great importance. Therefore, the protection of cables must be taken seriously.

[0003] Cables used in power grids are often quite long, and they are not usually manufactured in one piece to the required length. Therefore, it is necessary to connect the cables. Currently, the cable joints are usually sealed with insulating tape. However, after the cables have been suspended for a long time, the joints may break. Existing technology does not provide adequate protection for the cable joints. Therefore, there is a need to provide a high-voltage power grid cable protection device to prevent the cable joints from breaking due to prolonged suspension. Summary of the Invention

[0004] The purpose of this invention is to provide a high-voltage power grid cable protection device that has the advantage of protecting the cable connection and solves the problem that cables are prone to breakage when suspended for a long time.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a high-voltage power grid cable protection device, comprising a first connecting sleeve and a second connecting sleeve for fixing the cable, wherein a first mounting ring and a second mounting ring are respectively fixedly connected to the opposite surfaces of the first connecting sleeve and the second connecting sleeve, a limit strip is fixedly connected to the first mounting ring, the limit strip is engaged with the second mounting ring, a first locking block for locking the cable is slidably connected inside the side wall of the first connecting sleeve, a second locking block for locking the cable is slidably connected inside the side wall of the second connecting sleeve, and a driving mechanism for driving the first locking block and the second locking block to slide is provided on the first connecting sleeve.

[0006] Preferably, a mounting base is fixedly connected to the side of the second mounting ring away from the first mounting ring, a mounting rod is rotatably connected to the middle of the mounting base, a limit block is fixedly connected to the middle of the mounting rod, a through groove is provided on the second mounting ring to cooperate with the limit strip, and a plurality of slots are provided on the upper surface of the limit strip to cooperate with the limit block.

[0007] Preferably, both ends of the mounting rod are fixedly connected to limit plates, both ends of the mounting rod are sleeved with torsion springs, both ends of the two torsion springs are fixedly connected to the corresponding mounting base and limit plates, and a receiving box that cooperates with the limit strip is fixedly connected to the side wall of the second connecting sleeve.

[0008] Preferably, the driving mechanism includes a rotating shaft, which is rotatably connected to the side wall of the first connecting sleeve. A cam is fixedly connected to one end of the rotating shaft, and a spiral groove is provided on the other end of the rotating shaft. A through hole that mates with the rotating shaft is provided on the second mounting ring, and a slider is fixedly connected in the through hole. The slider is intermittently slidably connected in the spiral groove, and the cam intermittently abuts against the first locking block.

[0009] Preferably, the top of the second locking block and the end of the limiting strip near the second locking block are provided with mutually cooperating tilt angles. The first locking block is fixedly connected to both sides of the first mounting plate. The lower surface of the first mounting plate is fixedly connected to the first telescopic rod. The first telescopic rod is sleeved with a first spring. The two ends of the first spring are fixedly connected to the first mounting plate and the first connecting sleeve, respectively. The second locking block is fixedly connected to both sides of the second mounting plate. The lower surface of the second mounting plate is fixedly connected to the second telescopic rod. The second telescopic rod is sleeved with a second spring. The two ends of the second spring are fixedly connected to the second mounting plate and the second connecting sleeve, respectively.

[0010] Preferably, the second mounting ring has a plurality of receiving grooves for receiving bagged adhesive on the side facing the first mounting ring, the first mounting ring has a plurality of spikes for piercing bagged adhesive fixedly connected on the side facing the second mounting ring, and a sealing ring is placed between the second mounting ring and the first mounting ring.

[0011] Preferably, a connecting plate is installed on the sidewalls of the first mounting ring and the second mounting ring, and a first nut is threaded to each of the four corners of the connecting plate. Threaded holes that mate with the first nuts are provided on the sidewalls of both the first mounting ring and the second mounting ring.

[0012] Preferably, a column is fixedly connected to the upper surface of the connecting plate, a fixing plate is fixedly connected to the top of the column, and four second nuts are provided at the four corners of the fixing plate and installed on the fixed building through the second nuts. The four second nuts are clearance-fitted with the fixing plate.

[0013] Preferably, four collars are slidably connected inside the fixing plate, and the four collars are respectively sleeved on four second nuts with clearance fit between the collars and the second nuts. A first pull rope is fixedly connected between two collars on the same side. A flexible rod is fixedly connected to the end face of both the first connecting sleeve and the second connecting sleeve. A fixing ring is fixedly connected to the end of the flexible rod. A second pull rope is fixedly connected to the middle of the first pull rope. The end of the second pull rope away from the first pull rope is fixedly connected to the fixing ring. The cable is inserted and connected to the middle of the fixing ring. A pin is fixedly connected to the inner wall of the fixing ring.

[0014] Preferably, an audible and visual alarm is fixedly connected to the middle of the second pull rope, and a pull switch for controlling the audible and visual alarm is fixedly connected to the bottom of the audible and visual alarm. The control part of the pull switch is fixedly connected to the second pull rope.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention, by setting a first connecting sleeve and a second connecting sleeve, as well as a first locking block and a second locking block, enables the drive mechanism to operate synchronously when the first mounting ring approaches the second mounting ring. At this time, both the first locking block and the second locking block move toward the cable, thereby fixing the position between the cable and the first connecting sleeve and the second connecting sleeve. At this time, the first connecting sleeve and the second connecting sleeve are already fixedly connected, thereby protecting the connection of the cable and preventing the connection of the cable from breaking.

[0016] 2. In this invention, when the first mounting ring approaches the second mounting ring, the spikes on the first mounting ring can puncture the bagged adhesive in the receiving groove on the second mounting ring, thereby allowing the adhesive to flow out between the first mounting ring and the second mounting ring, so that the two are bonded together, further increasing the strength of the connection between the two.

[0017] 3. By setting a fixing ring, if the cable is knocked off by the collision, the pin can pierce the outer sheath of the cable and be inserted into the cable. The fixing ring is made of insulating material, which can prevent the broken cable from conducting electricity. At this time, the cable can be hooked by the fixing ring, thereby preventing the cable from falling and causing an electric shock accident.

[0018] 4. By setting up an audible and visual alarm, when the cable breaks at the connection point between the first and second connecting sleeves, the second pull rope is pulled and pulls the pull switch. At this time, the audible and visual alarm controlled by the pull switch is activated, emitting an audible and visual alarm to alert nearby pedestrians to stay away. It also enables maintenance personnel to quickly locate the location of the accident, which is convenient for subsequent cable maintenance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the connection state structure of the present invention; Figure 2 This is a schematic diagram of the decomposed state structure of the present invention; Figure 3 This is a schematic diagram of the structure of the spike in this invention; Figure 4 This is a schematic diagram of the structure at the mounting rod of the present invention; Figure 5 For the present invention Figure 4 A schematic diagram of the structure of part A; Figure 6 This is a schematic diagram of the structure at the second card block of the present invention; Figure 7 This is a schematic diagram of the structure of the first card block in this invention; Figure 8 This is a schematic diagram of the structure at the rotating shaft of the present invention; Figure 9 This is a schematic diagram of the structure at the second nut of the present invention; Figure 10 This is a schematic diagram of the structure of the fixing ring of the present invention.

[0020] In the diagram: 1. First connecting sleeve; 11. First mounting ring; 12. Spike; 2. First locking block; 21. First mounting plate; 22. First telescopic rod; 23. First spring; 24. Rotating shaft; 25. Cam; 26. Spiral groove; 27. Slider; 3. Second connecting sleeve; 31. Second mounting ring; 32. Receiving groove; 33. Sealing ring; 34. Second locking block; 35. Second mounting plate; 36. Second telescopic rod; 37. Second spring ; 4. Mounting rod; 41. Limiting block; 42. Limiting plate; 43. Torsion spring; 44. Mounting base; 45. Limiting strip; 46. Slot; 47. Receiving box; 5. Column; 51. Connecting plate; 52. First nut; 53. Fixing plate; 54. Second nut; 55. Collar; 56. First pull rope; 57. Second pull rope; 58. Audible and visual alarm; 59. Pull-type switch; 6. Fixing ring; 61. Flexible rod; 62. Pin. Detailed Implementation

[0021] 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.

[0022] Example 1 Reference Figure 1 , Figure 2 , Figure 6 and Figure 7 The present invention provides a technical solution: a high-voltage power grid cable protection device, comprising a first connecting sleeve 1 and a second connecting sleeve 3 for fixing the cable, a first mounting ring 11 and a second mounting ring 31 respectively fixedly connected to the opposite surfaces of the first connecting sleeve 1 and the second connecting sleeve 3, a limit strip 45 fixedly connected to the first mounting ring 11, the limit strip 45 being engaged with the second mounting ring 31, a first locking block 2 for locking the cable being slidably connected inside the side wall of the first connecting sleeve 1, a second locking block 34 for locking the cable being slidably connected inside the side wall of the second connecting sleeve 3, and a driving mechanism for driving the first locking block 2 and the second locking block 34 to slide on the first connecting sleeve 1.

[0023] In use, the first connecting sleeve 1 and the second connecting sleeve 3 are respectively fitted onto the two cable segments. After connecting the two cable segments, the first connecting sleeve 1 and the second connecting sleeve 3 are pushed closer to each other, so that the first mounting ring 11 and the second mounting ring 31 come into contact. At this time, the limiting strip 45 on the first mounting ring 11 can be locked onto the second mounting ring 31, thereby fixing the relative position between the first mounting ring 11 and the second mounting ring 31. When the first mounting ring 11 moves closer to the second mounting ring 31, the drive mechanism operates synchronously. At this time, the first locking block 2 and the second locking block 34 both move towards the cable, thereby fixing the position between the cable and the first connecting sleeve 1 and the second connecting sleeve 3. At this time, the first connecting sleeve 1 and the second connecting sleeve 3 are fixedly connected, thereby protecting the cable connection and preventing the cable connection from breaking.

[0024] Reference Figure 4 and Figure 5 A mounting base 44 is fixedly connected to the side of the second mounting ring 31 away from the first mounting ring 11. A mounting rod 4 is rotatably connected to the middle of the mounting base 44. A limit block 41 is fixedly connected to the middle of the mounting rod 4. A through groove that cooperates with the limit strip 45 is opened on the second mounting ring 31. A plurality of slots 46 that cooperate with the limit block 41 are opened on the upper surface of the limit strip 45.

[0025] When the limiting strip 45 on the first mounting ring 11 is aligned with the through groove on the second mounting ring 31 and inserted, the limiting strip 45 pushes the limiting block 41. The limiting strip 45 has a slot 46, so that when the limiting strip 45 is inserted, it can push the limiting block 41, causing the limiting block 41 to swing continuously. When the limiting block 41 is inserted into the slot 46, the limiting strip 45 is limited by the limiting block 41 and cannot be pulled out from the second mounting ring 31, thus ensuring the firmness of the connection between the first mounting ring 11 and the second mounting ring 31.

[0026] Reference Figure 4 and Figure 5 Both ends of the mounting rod 4 are fixedly connected to the limiting plate 42, and both ends of the mounting rod 4 are sleeved with torsion springs 43. Both ends of the two torsion springs 43 are fixedly connected to the corresponding mounting base 44 and the limiting plate 42. The side wall of the second connecting sleeve 3 is fixedly connected to the receiving box 47 that cooperates with the limiting strip 45.

[0027] When the limiting block 41 swings, it can drive the mounting rod 4 to rotate on the mounting base 44. Since the two ends of the torsion spring 43 are fixedly connected to the mounting base 44 and the limiting plates 42 at both ends of the mounting rod 4 respectively, the torsion spring 43 can apply torque to the mounting rod 4, so that the mounting rod 4 has a force to drive it to rotate to its original position. This ensures that the limiting block 41, which is fixedly connected to the mounting rod 4, can be stably engaged in the slot 46 on the limiting block 41, ensuring the firmness of the connection between the first connecting sleeve 1 and the second connecting sleeve 3. The receiving box 47 can hold and accommodate the limiting strip 45, preventing the limiting strip 45 from warping and deforming after being hit, which would make it inconvenient to disassemble the first mounting ring 11 and the second mounting ring 31. Reference Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8 The drive mechanism includes a rotating shaft 24, which is rotatably connected to the side wall of the first connecting sleeve 1. A cam 25 is fixedly connected to one end of the rotating shaft 24, and a spiral groove 26 is provided on the other end of the rotating shaft 24. A through hole that cooperates with the rotating shaft 24 is provided on the second mounting ring 31. A slider 27 is fixedly connected in the through hole. The slider 27 is intermittently slidably connected in the spiral groove 26, and the cam 25 intermittently abuts against the first locking block 2.

[0028] When the limiting strip 45 is aligned with the through groove on the second mounting ring 31, the rotating shaft 24 is simultaneously aligned with the through hole on the second mounting ring 31. At this time, the rotating shaft 24 can be inserted into the through hole. When the rotating shaft 24 is inserted into the through hole on the second mounting ring 31, the slider 27 in the through hole of the second mounting ring 31 simultaneously slides into the spiral groove 26 on the rotating shaft 24. At this time, the slider 27 slides in the spiral groove 26 on the side wall of the rotating shaft 24, and the rotating shaft 24 rotates. At this time, the cam 25, which is fixedly connected to the rotating shaft 24, rotates. The rotating cam 25 can apply pressure to the first locking block 2, causing the first locking block 2 to slide into the inside of the first connecting sleeve 1, thereby clamping the cable and preventing the position of the cable and the first connecting sleeve 1 from easily changing.

[0029] Reference Figure 4 , Figure 5 , Figure 6 , Figure 7 and Figure 8The top of the second locking block 34 and the end of the limiting strip 45 near the second locking block 34 are both provided with mutually cooperating tilt angles. The first mounting plate 21 is fixedly connected to both sides of the first locking block 2. The lower surface of the first mounting plate 21 is fixedly connected to the first telescopic rod 22. The first spring 23 is sleeved on the first telescopic rod 22. The two ends of the first spring 23 are fixedly connected to the first mounting plate 21 and the first connecting sleeve 1, respectively. The second mounting plate 35 is fixedly connected to both sides of the second locking block 34. The lower surface of the second mounting plate 35 is fixedly connected to the second telescopic rod 36. The second spring 37 is sleeved on the second telescopic rod 36. The two ends of the second spring 37 are fixedly connected to the second mounting plate 35 and the second connecting sleeve 3, respectively.

[0030] When the first mounting ring 11 is about to fit with the second mounting ring 31, the limiting strip 45 fixedly connected to the first mounting ring 11 contacts the second locking block 34. Since the contact parts of the two are both set with an inclination angle, the horizontally sliding limiting strip 45 can push the second locking block 34 to slide vertically, thereby causing the second locking block 34 to slide into the second connecting sleeve 3, so that the cable inside the second connecting sleeve 3 is fixed. The setting of the first spring 23 can apply an upward pushing force to the first locking block 2 through the first mounting plate 21, so that the first locking block 2 can move away from the cable in the initial state, which makes it easier for the cable to pass through the first connecting sleeve 1. At the same time, the upwardly moving first locking block 2 can push the cam 25, so that the position of the rotating shaft 24 is exactly in the spiral groove 26 on its side wall, which allows the slider 27 to slide in, ensuring that the rotating shaft 24 can be stably inserted into the through hole on the second mounting ring 31. The elastic force of the second spring 37 supports the second locking block 34 through the second mounting plate 35, so that the second locking block 34 does not contact the cable in the initial state, making it easier for the cable to pass through the second connecting sleeve 3.

[0031] Example 2 Reference Figure 3 Based on Embodiment 1, the second mounting ring 31 is further provided with a plurality of receiving grooves 32 for receiving bagged glue on the side facing the first mounting ring 11, and a plurality of spikes 12 for piercing bagged glue are fixedly connected on the side facing the second mounting ring 31 on the first mounting ring 11, and a sealing ring 33 is placed between the second mounting ring 31 and the first mounting ring 11.

[0032] When the first mounting ring 11 approaches the second mounting ring 31, the spikes 12 on the first mounting ring 11 can puncture the bag of glue in the receiving groove 32 on the second mounting ring 31, thereby allowing the glue to flow out between the first mounting ring 11 and the second mounting ring 31, so that the two are bonded together, further increasing the strength of the connection between the two. The sealing ring 33 ensures that the connection part of the cable will not be damaged or leak electricity due to external water seepage.

[0033] Example 3 Reference Figure 1 , Figure 2 , Figure 9 and Figure 10 Based on Embodiment 1, a connecting plate 51 is further installed on the side walls of the first mounting ring 11 and the second mounting ring 31. The four corners of the connecting plate 51 are threaded with first nuts 52. The side walls of the first mounting ring 11 and the second mounting ring 31 are provided with threaded holes that cooperate with the first nuts 52.

[0034] After the first mounting ring 11 contacts the second mounting ring 31, the connecting plate 51 is then installed on the first mounting ring 11 and the second mounting ring 31 by the first nut 52, which further strengthens the connection between the first mounting ring 11 and the second mounting ring 31.

[0035] Reference Figure 1 , Figure 2 , Figure 9 and Figure 10 A column 5 is fixedly connected to the upper surface of the connecting plate 51, and a fixing plate 53 is fixedly connected to the top of the column 5. Four second nuts 54 are provided at the four corners of the fixing plate 53 and are installed on the fixed building through the second nuts 54. The four second nuts 54 are fitted with the fixing plate 53 with a clearance.

[0036] The column 5 is set so that the connecting plate 51 and the fixing plate 53 are fixedly connected. After the connecting plate 51 is installed on the first mounting ring 11 and the second mounting ring 31, the fixing plate 53 is installed in the required position by the second nut 54 so that the cable can be suspended on the fixed building.

[0037] Reference Figure 1 , Figure 2 , Figure 9 and Figure 10 Four collars 55 are slidably connected inside the fixed plate 53. The four collars 55 are respectively sleeved on four second nuts 54. There is a clearance fit between the collars 55 and the second nuts 54. A first pull rope 56 is fixedly connected between two collars 55 on the same side. Flexible rods 61 are fixedly connected to the end faces of the first connecting sleeve 1 and the second connecting sleeve 3. A fixed ring 6 is fixedly connected to the end of the flexible rod 61. A second pull rope 57 is fixedly connected to the middle of the first pull rope 56. The end of the second pull rope 57 away from the first pull rope 56 is fixedly connected to the fixed ring 6. A cable is inserted and connected to the middle of the fixed ring 6. A pin 62 is fixedly connected to the inner wall of the fixed ring 6.

[0038] When the cable is connected, it passes through the middle of the fixing ring 6. Since the two fixing rings 6 are connected to the first connecting sleeve 1 and the second connecting sleeve 3 on the same side through the flexible rod 61, there is a certain distance between the fixing ring 6 and the first connecting sleeve 1 and the second connecting sleeve 3. When the cable on the first connecting sleeve 1 or the second connecting sleeve 3 is hit, if the hit cable falls off, it can come into contact with the fixing ring 6. Since the inner wall of the fixing ring 6 is fixedly connected to the pin 62, the pin 62 can pierce the outer sheath of the cable and insert into the cable. The fixing ring 6 is made of insulating material, which can prevent the broken cable from conducting electricity. At this time, the cable can be hooked by the fixing ring 6, thus preventing the cable from falling and causing an electric shock accident. In addition, the weight of the cable pulls on the fixing ring 6, at which time the flexible rod 61 deforms, and the fixing ring 6 pulls the first pull rope 56 through the second pull rope 57. At this time, the first pull rope 56 pulls the two sleeves 55 on the same side. Because of the clearance fit between the collar 55 and the second nut 54, the collar 55 can slide relative to the fixed plate 53. At this time, the collar 55 pushes the second nut 54, and the second nut 54 is also clearance-fitted with the fixed plate 53. Therefore, if the connection between the second nut 54 and the fixed structure becomes loose, the two second nuts 54 on the same side can tilt due to the push of the collar 55. At this time, the contact pressure between the second nut 54 and the fixed structure increases, and the friction between the second nut 54 and the fixed structure increases, which strengthens the connection between the fixed plate 53 and the fixed structure. Moreover, the greater the impact force on the cable, the greater the tension of the second pull rope 57 on the first pull rope 56, which in turn increases the pressure between the second nut 54 and the fixed structure. This increases the adaptability of the connection between the fixed plate 53 and the fixed structure, and thus, to a certain extent, avoids the accident of electric shock caused by cable drooping.

[0039] Example 4 Reference Figure 9 Furthermore, based on Embodiment 3, a sound and light alarm 58 is fixedly connected to the middle of the second pull rope 57, and a pull switch 59 for controlling the sound and light alarm 58 is fixedly connected to the bottom of the sound and light alarm 58. The control part of the pull switch 59 is fixedly connected to the second pull rope 57.

[0040] When the cable breaks at the connection point of the first connecting sleeve 1 and the second connecting sleeve 3, the second pull rope 57 is pulled and pulls the pull switch 59. At this time, the audible and visual alarm 58 controlled by the pull switch 59 is activated, and an audible and visual alarm is issued to remind nearby pedestrians to stay away. It also enables maintenance personnel to quickly locate the location of the accident, which is convenient for subsequent cable maintenance. If the cable is hit but not broken, the second pull rope 57 pulls the pull switch 59 at the bottom of the audible and visual alarm 58 for a period of time. When the cable is no longer hit, the cable gradually stops exerting tension on the fixing ring 6, and then the audible and visual alarm 58 stops operating. The brief operation of the audible and visual alarm 58 can alert the person who caused the collision, so that the person who caused the collision can stay away from the cable after being alerted.

[0041] Working principle: This high-voltage power grid cable protection device involves fitting the first connecting sleeve 1 and the second connecting sleeve 3 onto two cable segments respectively. After connecting the two cable segments, the first connecting sleeve 1 and the second connecting sleeve 3 are pushed closer together, causing the first mounting ring 11 and the second mounting ring 31 to contact. At this time, the limiting strip 45 on the first mounting ring 11 can engage with the second mounting ring 31, thereby fixing the relative position between the first mounting ring 11 and the second mounting ring 31. When the first mounting ring 11 moves closer to the second mounting ring 31, the drive mechanism operates synchronously. At this time, the first locking block 2 and the second locking block 34 both move towards the cable, thereby fixing the position between the cable and the first connecting sleeve 1 and the second connecting sleeve 3. At this time, the first connecting sleeve 1 and the second connecting sleeve 3 are fixedly connected, thus protecting the cable connection and preventing the cable connection from breaking.

[0042] When the limiting strip 45 on the first mounting ring 11 is aligned with the through groove on the second mounting ring 31 and inserted, the limiting strip 45 pushes the limiting block 41. The limiting strip 45 has a slot 46, so that when the limiting strip 45 is inserted, it can push the limiting block 41, causing the limiting block 41 to swing continuously. When the limiting block 41 is inserted into the slot 46, the limiting strip 45 is limited by the limiting block 41 and cannot be pulled out from the second mounting ring 31, thus ensuring the firmness of the connection between the first mounting ring 11 and the second mounting ring 31.

[0043] When the limiting block 41 swings, it can drive the mounting rod 4 to rotate on the mounting base 44. Since the two ends of the torsion spring 43 are fixedly connected to the mounting base 44 and the limiting plates 42 at both ends of the mounting rod 4 respectively, the torsion spring 43 can apply torque to the mounting rod 4, so that the mounting rod 4 has a force to drive it to rotate to its original position. This ensures that the limiting block 41, which is fixedly connected to the mounting rod 4, can be stably engaged in the slot 46 on the limiting block 41, ensuring the firmness of the connection between the first connecting sleeve 1 and the second connecting sleeve 3. The receiving box 47 can hold and accommodate the limiting strip 45, preventing the limiting strip 45 from warping and deforming after being hit, which would make it inconvenient to disassemble the first mounting ring 11 and the second mounting ring 31. When the limiting strip 45 is aligned with the through groove on the second mounting ring 31, the rotating shaft 24 is simultaneously aligned with the through hole on the second mounting ring 31. At this time, the rotating shaft 24 can be inserted into the through hole. When the rotating shaft 24 is inserted into the through hole on the second mounting ring 31, the slider 27 in the through hole of the second mounting ring 31 simultaneously slides into the spiral groove 26 on the rotating shaft 24. At this time, the slider 27 slides in the spiral groove 26 on the side wall of the rotating shaft 24, and the rotating shaft 24 rotates. At this time, the cam 25, which is fixedly connected to the rotating shaft 24, rotates. The rotating cam 25 can apply pressure to the first locking block 2, causing the first locking block 2 to slide into the inside of the first connecting sleeve 1, thereby clamping the cable and preventing the position of the cable and the first connecting sleeve 1 from easily changing.

[0044] When the first mounting ring 11 is about to fit with the second mounting ring 31, the limiting strip 45 fixedly connected to the first mounting ring 11 contacts the second locking block 34. Since the contact parts of the two are both set with an inclination angle, the horizontally sliding limiting strip 45 can push the second locking block 34 to slide vertically, thereby causing the second locking block 34 to slide into the second connecting sleeve 3, so that the cable inside the second connecting sleeve 3 is fixed. The setting of the first spring 23 can apply an upward pushing force to the first locking block 2 through the first mounting plate 21, so that the first locking block 2 can move away from the cable in the initial state, which makes it easier for the cable to pass through the first connecting sleeve 1. At the same time, the upwardly moving first locking block 2 can push the cam 25, so that the position of the rotating shaft 24 is exactly in the spiral groove 26 on its side wall, which allows the slider 27 to slide in, ensuring that the rotating shaft 24 can be stably inserted into the through hole on the second mounting ring 31. The elastic force of the second spring 37 supports the second locking block 34 through the second mounting plate 35, so that the second locking block 34 does not contact the cable in the initial state, making it easier for the cable to pass through the second connecting sleeve 3.

[0045] When the first mounting ring 11 approaches the second mounting ring 31, the spikes 12 on the first mounting ring 11 can puncture the bag of glue in the receiving groove 32 on the second mounting ring 31, thereby allowing the glue to flow out between the first mounting ring 11 and the second mounting ring 31, so that the two are bonded together, further increasing the strength of the connection between the two. The sealing ring 33 ensures that the connection part of the cable will not be damaged or leak electricity due to external water seepage.

[0046] After the first mounting ring 11 contacts the second mounting ring 31, the connecting plate 51 is then installed on the first mounting ring 11 and the second mounting ring 31 by the first nut 52, which further strengthens the connection between the first mounting ring 11 and the second mounting ring 31.

[0047] The column 5 is set so that the connecting plate 51 and the fixing plate 53 are fixedly connected. After the connecting plate 51 is installed on the first mounting ring 11 and the second mounting ring 31, the fixing plate 53 is installed in the required position by the second nut 54 so that the cable can be suspended on the fixed building.

[0048] When the cable is connected, it passes through the middle of the fixing ring 6. Since the two fixing rings 6 are connected to the first connecting sleeve 1 and the second connecting sleeve 3 on the same side through the flexible rod 61, there is a certain distance between the fixing ring 6 and the first connecting sleeve 1 and the second connecting sleeve 3. When the cable on the first connecting sleeve 1 or the second connecting sleeve 3 is hit, if the hit cable falls off, it can come into contact with the fixing ring 6. Since the inner wall of the fixing ring 6 is fixedly connected to the pin 62, the pin 62 can pierce the outer sheath of the cable and insert into the cable. The fixing ring 6 is made of insulating material, which can prevent the broken cable from conducting electricity. At this time, the cable can be hooked by the fixing ring 6, thus preventing the cable from falling and causing an electric shock accident. In addition, the weight of the cable pulls on the fixing ring 6, at which time the flexible rod 61 deforms, and the fixing ring 6 pulls the first pull rope 56 through the second pull rope 57. At this time, the first pull rope 56 pulls the two sleeves 55 on the same side. Because of the clearance fit between the collar 55 and the second nut 54, the collar 55 can slide relative to the fixed plate 53. At this time, the collar 55 pushes the second nut 54, and the second nut 54 is also clearance-fitted with the fixed plate 53. Therefore, if the connection between the second nut 54 and the fixed structure becomes loose, the two second nuts 54 on the same side can tilt due to the push of the collar 55. At this time, the contact pressure between the second nut 54 and the fixed structure increases, and the friction between the second nut 54 and the fixed structure increases, which strengthens the connection between the fixed plate 53 and the fixed structure. Moreover, the greater the impact force on the cable, the greater the tension of the second pull rope 57 on the first pull rope 56, which in turn increases the pressure between the second nut 54 and the fixed structure. This increases the adaptability of the connection between the fixed plate 53 and the fixed structure, and thus, to a certain extent, avoids the accident of electric shock caused by cable drooping.

[0049] When the cable breaks at the connection point of the first connecting sleeve 1 and the second connecting sleeve 3, the second pull rope 57 is pulled and pulls the pull switch 59. At this time, the audible and visual alarm 58 controlled by the pull switch 59 is activated, and an audible and visual alarm is issued to remind nearby pedestrians to stay away. It also enables maintenance personnel to quickly locate the location of the accident, which is convenient for subsequent cable maintenance. If the cable is hit but not broken, the second pull rope 57 pulls the pull switch 59 at the bottom of the audible and visual alarm 58 for a period of time. When the cable is no longer hit, the cable gradually stops exerting tension on the fixing ring 6, and then the audible and visual alarm 58 stops operating. The brief operation of the audible and visual alarm 58 can alert the person who caused the collision, so that the person who caused the collision can stay away from the cable after being alerted.

[0050] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-voltage power grid cable protection device, comprising a first connecting sleeve (1) and a second connecting sleeve (3) for fixing the cable, characterized in that: A first mounting ring (11) and a second mounting ring (31) are fixedly connected to the opposite surfaces of the first connecting sleeve (1) and the second connecting sleeve (3), respectively. A limit strip (45) is fixedly connected to the first mounting ring (11), and the limit strip (45) is snapped onto the second mounting ring (31). A first locking block (2) for locking the cable is slidably connected inside the side wall of the first connecting sleeve (1), and a second locking block (34) for locking the cable is slidably connected inside the side wall of the second connecting sleeve (3). A driving mechanism for driving the first locking block (2) and the second locking block (34) to slide is provided on the first connecting sleeve (1). The driving mechanism includes a rotating shaft (24), which is rotatably connected to the side wall of the first connecting sleeve (1). A cam (25) is fixedly connected to one end of the rotating shaft (24), and a spiral groove (26) is provided on the other end of the rotating shaft (24). A through hole that cooperates with the rotating shaft (24) is provided on the second mounting ring (31). A slider (27) is fixedly connected in the through hole. The slider (27) is intermittently slidably connected in the spiral groove (26), and the cam (25) intermittently abuts against the first locking block (2). The top of the second card block (34) and the end of the limiting strip (45) near the second card block (34) are both provided with mutually cooperating tilt angles; The first mounting plate (21) is fixedly connected to both sides of the first mounting block (2). The first telescopic rod (22) is fixedly connected to the lower surface of the first mounting plate (21). The first spring (23) is sleeved on the first telescopic rod (22). The two ends of the first spring (23) are fixedly connected to the first mounting plate (21) and the first connecting sleeve (1) respectively. The second mounting plate (35) is fixedly connected to both sides of the second mounting block (34). The second telescopic rod (36) is fixedly connected to the lower surface of the second mounting plate (35). The second spring (37) is sleeved on the second telescopic rod (36). The two ends of the second spring (37) are fixedly connected to the second mounting plate (35) and the second connecting sleeve (3) respectively.

2. The high-voltage power grid cable protection device according to claim 1, characterized in that: A mounting base (44) is fixedly connected to the side of the second mounting ring (31) away from the first mounting ring (11). A mounting rod (4) is rotatably connected to the middle of the mounting base (44). A limiting block (41) is fixedly connected to the middle of the mounting rod (4). A through groove that cooperates with the limiting strip (45) is opened on the second mounting ring (31). A plurality of slots (46) that cooperate with the limiting block (41) are opened on the upper surface of the limiting strip (45).

3. A high-voltage power grid cable protection device according to claim 2, characterized in that: Both ends of the mounting rod (4) are fixedly connected to the limiting plate (42), and both ends of the mounting rod (4) are sleeved with torsion springs (43). Both ends of the two torsion springs (43) are fixedly connected to the corresponding mounting seat (44) and the limiting plate (42). The side wall of the second connecting sleeve (3) is fixedly connected to the receiving box (47) that cooperates with the limiting strip (45).

4. A high-voltage power grid cable protection device according to claim 1, characterized in that: The second mounting ring (31) has a plurality of receiving grooves (32) for receiving bagged glue on the side facing the first mounting ring (11). The first mounting ring (11) has a plurality of spikes (12) for piercing bagged glue fixedly connected on the side facing the second mounting ring (31). A sealing ring (33) is placed between the second mounting ring (31) and the first mounting ring (11).

5. A high-voltage power grid cable protection device according to claim 1, characterized in that: A connecting plate (51) is installed on the side wall of the first mounting ring (11) and the second mounting ring (31). The four corners of the connecting plate (51) are threaded with a first nut (52). The side wall of the first mounting ring (11) and the second mounting ring (31) are provided with threaded holes that cooperate with the first nut (52).

6. A high-voltage power grid cable protection device according to claim 5, characterized in that: The upper surface of the connecting plate (51) is fixedly connected to a column (5), and the top of the column (5) is fixedly connected to a fixing plate (53). Four second nuts (54) are provided at the four corners of the fixing plate (53) and are installed on the fixed building through the second nuts (54). The four second nuts (54) are fitted with the fixing plate (53) with a clearance.

7. A high-voltage power grid cable protection device according to claim 6, characterized in that: Four collars (55) are slidably connected inside the fixed plate (53). The four collars (55) are respectively sleeved on four second nuts (54). The collars (55) and the second nuts (54) are fitted with a clearance. A first pull rope (56) is fixedly connected between two collars (55) on the same side. A flexible rod (61) is fixedly connected to the end face of the first connecting sleeve (1) and the second connecting sleeve (3). A fixed ring (6) is fixedly connected to the end of the flexible rod (61). A second pull rope (57) is fixedly connected to the middle of the first pull rope (56). The end of the second pull rope (57) away from the first pull rope (56) is fixedly connected to the fixed ring (6). The cable is inserted and connected to the middle of the fixed ring (6). A pin (62) is fixedly connected to the inner wall of the fixed ring (6).

8. A high-voltage power grid cable protection device according to claim 7, characterized in that: A sound and light alarm (58) is fixedly connected to the middle of the second pull rope (57), and a pull switch (59) for controlling the sound and light alarm (58) is fixedly connected to the bottom of the sound and light alarm (58). The control part of the pull switch (59) is fixedly connected to the second pull rope (57).

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