Combined lightning protection puncture insulator
By designing a combined lightning-proof puncture insulator in the lightning-proof pin type insulator, setting the fixed part of the insulated wire and the puncture connection part at different positions, and fixing the insulated wire by rotating the pressure plate, the problems of increased gap and increased contact resistance caused by vibration of the insulated wire are solved, and burns and lightning strikes and line breakage failures in the wire puncture connection part after lightning strike are avoided.
Patent Information
- Application Number
- CN202410687864.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-30
- Publication Date
- 2025-03-28
AI Technical Summary
During the long-term operation of existing lightning-proof insulators, the gap between the puncture teeth and the insulated conductors continues to grow, resulting in burns and lightning breaks at the connection parts of the wire puncture after the line is hit by lightning.
A combined lightning-proof puncture insulator is designed, which sets the fixed part of the insulated wire and the wire puncture connection part at different positions of the insulated wire, and fixes the insulated wire on the conductive top through two rotating pressure plates to ensure that the puncture teeth on the puncture pressure plate penetrate the insulating layer of the insulated wire and electrically connect the conductor.
It effectively avoids the problems of increasing gap between conductors and puncture teeth and increasing contact resistance caused by vibration of insulated wires, and prevents burns and lightning breakage of the wire connections after the line is hit by lightning.
Smart Images
Figure CN119724773A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a lightning protection hardware used on an insulating overhead line, in particular to a combined lightning protection piercing insulator. Background Art
[0002] At present, insulated wires are widely used in distribution lines. In order to ensure the lightning resistance level of insulated wires, lightning rod insulators are widely used in insulated wires in distribution lines, playing the dual role of fixing insulated wires and lightning protection.
[0003] At present, lightning rod insulators include an insulator installed on a cross arm through a conductive base, a conductive top seat arranged at the upper end of the insulator, a puncture pressure plate connected to the conductive top seat by bolts, and a drain rod electrically connected to the conductive top seat. A discharge gap is formed between the lower end of the drain rod and the conductive base. When in use, the insulated wire is pressed and fixed on the conductive top seat by a puncture pressure plate. The puncture pressure plate has puncture teeth. While the puncture pressure plate presses and fixes the insulated wire, the puncture teeth penetrate the insulation layer of the insulated wire and electrically connect with the conductor of the insulated wire. Under normal conditions, the insulated wire can be reliably fixed and the wire can be insulated from the grounding body such as the cross arm, realizing the function of the pin insulator; when the insulated wire is struck by lightning, the discharge gap between the drain rod and the conductive base can be broken down to form a short-circuit channel, releasing the lightning current to the ground, protecting the equipment and realizing the function of lightning protection.
[0004] The current lightning rod insulator combines the insulator and the lightning arrester into one, reducing the equipment and bringing convenience to the construction, operation and maintenance of the distribution network; however, it has the following shortcomings: since the fixed part of the insulated wire of the current lightning rod insulator (the part of the insulated wire corresponding to the puncture pressure plate) and the wire puncture connection part (the contact part between the conductor of the insulated wire and the puncture tooth) are arranged at the same part of the wire, when the insulated wire between the two lightning rod insulators shakes, wear will occur between the conductor of the insulated wire and the puncture tooth, so that during the long-term operation of the lightning rod insulator, a gap is likely to be generated between the conductor of the insulated wire and the puncture tooth and the gap continues to increase, thereby increasing the contact resistance of the wire puncture connection part, and the current carrying capacity is low. Under the condition of daily current carrying capacity, once a lightning current passes through, the contact resistance of the wire puncture connection part is large and it is difficult to meet the current carrying requirements, which will cause the wire at the wire puncture connection part to become hot and overheated, and burns, electric melting and other phenomena will occur, and even cause lightning strike and line break failure. Summary of the invention
[0005] The purpose of the present invention is to provide a combined lightning protection piercing insulator, which can effectively solve the problem that during the long-term operation of the current lightning protection rod insulator, a gap is generated between the piercing teeth and the conductor of the insulated wire and continues to increase, resulting in burns at the piercing connection part of the wire after the line is struck by lightning, lightning breakage and other faults.
[0006] The technical solution of the present invention is: A combined lightning protection puncture insulator, comprising: An insulator, the upper end of which is provided with a conductive top seat; The puncture pressure plate is located above the conductive top seat, and the puncture pressure plate and the conductive top seat are connected by a first bolt; Two rotating pressure plates, the piercing pressure plate is located between the two rotating pressure plates, one side of the rotating pressure plate is hinged on the conductive top seat, and the other side of the rotating pressure plate is connected to the conductive top seat through a second bolt. The specific use of a combined lightning protection piercing insulator of this scheme is as follows, Tighten the second bolt, and fix the insulated wire on the conductive top seat through two rotating pressure plates; then, tighten the first bolt, press the insulated wire through the puncture pressure plate, and make the puncture teeth on the puncture pressure plate penetrate the insulation layer of the insulated wire and electrically connect with the conductor of the insulated wire. In this way, the fixed part of the insulated wire (the part of the insulated wire corresponding to the rotating pressure plate) and the wire puncture connection part (the part of the insulated wire corresponding to the puncture pressure plate) are set at different positions of the insulated wire. At the same time, since the puncture pressure plate is located between the two rotating pressure plates, the force generated when the insulated wire between the two lightning rod insulators shakes will act on the fixed part corresponding to the rotating pressure plate, and will not affect the wire puncture connection part; thereby effectively solving the problem that every vibration of the insulated wire will cause wear between the conductor of the wire and the puncture teeth, causing the gap between the conductor and the puncture teeth to be easily generated and continuously enlarged during the long-term operation of the lightning rod insulator, so that the contact resistance of the wire puncture point continues to increase, and the current carrying capacity is under normal conditions; thereby avoiding the problem of burns at the wire puncture connection part after the line is struck by lightning, lightning breakage and other faults.
[0007] Preferably, the conductive top seat is provided with a first screw hole and a second screw hole, the first bolt is threadedly connected to the first screw hole, the second screw hole corresponds to the rotating pressure plate one by one, and the second bolt is threadedly connected to the corresponding second screw hole. In this way, it is convenient for the first bolt to lock the puncture pressure plate and for the second bolt to lock the rotating pressure plate.
[0008] As a preference, it also includes: An accommodating groove corresponding to the second screw holes one by one, the accommodating groove communicating with the corresponding second screw hole and one first screw hole; An unlocking swing rod corresponding to the second screw hole one by one and rotatably arranged in the receiving groove; A locking rocker rod corresponding to the unlocking rocker rod is rotatably arranged in the receiving groove, and the lower ends of the locking rocker rod and the unlocking rocker rod are hingedly connected via a connecting rod; The lower end of the unlocking swing rod rotates into the second screw hole under the action of the elastic member, and the upper end of the locking swing rod rotates into the first screw hole under the action of the elastic member; When the second bolt is locked in the second screw hole, the lower end of the unlocking rocker arm rests on the side wall of the second bolt, and the locking rocker arm is completely contained in the containing groove. In actual use, a combined lightning protection piercing insulator of this scheme requires the operator to lock the two rotating pressure plates first. However, in the actual installation process, the operator may be careless and fail to install one or both of the pressure plates. As a result, during long-term operation, a gap between the piercing teeth and the conductor of the insulated wire will continue to increase, causing burns at the piercing connection of the wire and wire breakage due to lightning strikes after the line is struck by lightning. In order to solve this problem, this scheme improves a combined lightning protection piercing insulator. Specifically, When the operator installs the device according to the standard, he first tightens the second bolt, and then fixes the insulated wire to the conductive top seat through two rotating pressure plates. At this time, the lower end of the unlocking rocker arm rests on the side wall of the second bolt, and the locking rocker arm is completely accommodated in the accommodating groove; in this way, the locking rocker arm will not restrict the installation of the first bolt; then, tighten the first bolt, press the insulated wire through the piercing pressure plate, and make the piercing teeth on the piercing pressure plate penetrate the insulation layer of the insulated wire to electrically connect with the conductor of the insulated wire. If during the actual installation process, as long as one rotating pressure plate is not installed (that is, one of the second bolts is installed in the corresponding second screw hole), the lower end of the unlocking rocker arm in the second screw hole corresponding to the rotating pressure plate will rotate into the second screw hole under the action of the elastic member, and the upper end of the locking rocker arm corresponding to the unlocking rocker arm will rotate into the first screw hole under the action of the elastic member, and the locking rocker arm will limit the first bolt from being installed in the first screw hole; in this way, during the process of locking the first bolt and installing the piercing pressure plate, the first bolt is restricted by the locking rocker arm and cannot be locked in the first screw hole; thereby forcing the operator to perform the installation in accordance with the standard, first locking the second bolts of the two rotating pressure plates, and fixing the insulated wire to the conductive top seat through the two rotating pressure plates; then, locking the first bolt, and pressing the insulated wire through the piercing pressure plate.
[0009] Preferably, it further includes a limiting member arranged in the accommodating groove, the limiting member limiting the rotation angle of the unlocking rocker arm and the locking rocker arm under the action of the elastic member.
[0010] Preferably, a limiting slot is provided on the upper surface of the conductive top seat, and the puncture pressure plate and the two rotating pressure plates are distributed along the length direction of the limiting slot, and the puncture pressure plate and the two rotating pressure plates are both located above the limiting slot. In this way, the insulated wire can be limited by the limiting slot, thereby improving the installation stability of the insulated wire.
[0011] Preferably, the hinge shaft on one side of the rotating pressure plate and the second bolt are located on opposite sides of the limiting through slot.
[0012] Preferably, there are two first bolts, which are distributed on opposite sides of the limiting slot. The puncture pressing plate is locked by the two first bolts distributed on opposite sides of the limiting slot, so that the puncture pressing plate can press the insulated wire tightly and the puncture teeth on the puncture pressing plate can penetrate the insulation layer of the insulated wire and electrically connect with the conductor of the insulated wire.
[0013] Preferably, the cross section of the limiting groove is in an arc shape, so that the insulating wire can be limited by the limiting groove, thereby improving the installation stability of the insulating wire.
[0014] Preferably, the rotating pressing plate is provided with a wire pressing groove with its opening facing downwards, so that the insulated wire can be limited by the wire pressing groove, thereby improving the installation stability of the insulated wire.
[0015] Preferably, the puncture pressing plate is provided with a puncture wire groove with an opening facing downwards. In this way, the insulated wire can be limited by the puncture wire groove, the installation stability of the insulated wire can be improved, and the puncture teeth on the puncture pressing plate can penetrate the insulation layer of the insulated wire and be electrically connected to the conductor of the insulated wire.
[0016] Preferably, the cross section of the puncture wire groove is arc-shaped.
[0017] The beneficial effect of the present invention is that it can effectively solve the problem that during the long-term operation of the current lightning rod insulator, a gap is generated between the puncture teeth and the conductor of the insulated wire and continues to increase, causing burns at the puncture connection part of the wire after the line is struck by lightning, lightning breakage and other faults. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 The invention discloses a structural schematic diagram of a combined lightning protection piercing insulator.
[0019] Figure 2 It is a structural schematic diagram of the present invention after the rotating pressing plate fixes the insulated wire.
[0020] Figure 3 It is a structural schematic diagram of the puncture pressing plate of the present invention after pressing the insulated wire.
[0021] Figure 4 It is a schematic diagram of a partial cross-sectional structure of the conductive top seat of the specific embodiment 3 of the present invention.
[0022] In the figure: Insulator 1, conductive top seat 1.1, conductive base 1.2, limiting slot 1.3, Puncture pressing plate 2, puncture teeth 2.1; Rotate the pressing plate 3, the second bolt passes through the hole 3.1, and the wire pressing groove 3.2; First bolt 4; Second bolt 5; Second screw hole 6; Insulated wire 7; First screw hole 8; Accommodating tank 9; Unlock the swing lever 10; Locking rocker 11; Connecting rod 12; Limiting member 13. DETAILED DESCRIPTION
[0023] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments: Specific embodiment 1, as Figure 1 , Figure 2 , Figure 3 As shown, a combined lightning protection piercing insulator comprises an insulator 1, a piercing pressure plate 2 and two rotating pressure plates 3.
[0024] The upper end of the insulator 1 is provided with a conductive top seat 1.1. Specifically, the lower end of the insulator 1 is provided with a conductive base 1.2, and the conductive upper seat is electrically connected to a drain rod. The outer side surface of the conductive base 1.2 is provided with an arc-inducing protrusion that matches the drain rod. One end of the drain rod is electrically connected to the conductive upper seat. A discharge gap is formed between the other end of the drain rod and the conductive base 1.2, specifically, a discharge gap is formed between the other end of the drain rod and the arc-inducing protrusion of the conductive base 1.2.
[0025] The puncture pressure plate 2 is located above the conductive top seat 1.1. The puncture pressure plate 2 is connected to the conductive top seat 1.1 by a first bolt 4. A plurality of puncture teeth 2.1 are provided on the lower surface of the puncture pressure plate 2. The puncture pressure plate 2 is located between two rotating pressure plates 3. One side of the rotating pressure plate 3 is hinged on the conductive top seat 1.1, and the other side of the rotating pressure plate 3 is connected to the conductive top seat 1.1 by a second bolt 5.
[0026] The specific use of the combined lightning protection puncture insulator of this embodiment is as follows: The conductive base 1.2 is mounted on the cross arm of the pole through connecting bolts, so that a combined lightning protection puncture insulator is mounted on the cross arm of the pole through the conductive base 1.2.
[0027] The second bolts 5 of the two rotating pressing plates 3 are sequentially tightened, and the insulated wire 7 is first fixed on the conductive top seat 1.1 through the two rotating pressing plates 3.
[0028] Next, the first bolt 4 is locked, the insulated wire 7 is pressed by the puncture plate 2, and the puncture teeth on the puncture plate 2 penetrate the insulation layer of the insulated wire and are electrically connected to the conductor of the insulated wire. In this way, the fixed part of the insulated wire (the part of the insulated wire corresponding to the rotating plate 3) and the wire puncture connection part (the part of the insulated wire corresponding to the puncture plate 2) are set at different positions of the insulated wire. At the same time, since the puncture plate 2 is located between the two rotating plates 3, the force generated when the insulated wire between the two lightning rod insulators 1 shakes will act on the fixed part corresponding to the rotating plate 3, and will not affect the wire puncture connection part; thereby effectively solving the problem that each vibration of the insulated wire will cause wear between the conductor of the wire and the puncture teeth, resulting in the long-term operation of the lightning rod insulator 1. The gap between the conductor and the puncture teeth is easy to be generated and continues to increase, so that the contact resistance of the wire puncture point continues to increase, and the current carrying capacity is under normal conditions; thereby avoiding the problem of burns at the wire puncture connection part after the line is struck by lightning, lightning breakage and other faults.
[0029] Specific embodiment 2, as Figure 1 , Figure 2 , Figure 3 As shown, a combined lightning protection piercing insulator comprises an insulator 1, a piercing pressure plate 2 and two rotating pressure plates 3.
[0030] The upper end of the insulator 1 is provided with a conductive top seat 1.1. Specifically, the lower end of the insulator 1 is provided with a conductive base 1.2, and the conductive upper seat is electrically connected to a drain rod. The outer side surface of the conductive base 1.2 is provided with an arc-inducing protrusion that matches the drain rod. One end of the drain rod is electrically connected to the conductive upper seat. A discharge gap is formed between the other end of the drain rod and the conductive base 1.2, specifically, a discharge gap is formed between the other end of the drain rod and the arc-inducing protrusion of the conductive base 1.2.
[0031] The upper surface of the conductive top seat 1.1 is provided with a limiting groove 1.3, which passes through the upper surface of the conductive top seat 1.1. In this way, the insulated wire can be limited by the limiting groove 1.3 to improve the installation stability of the insulated wire. In this embodiment, the cross section of the limiting groove 1.3 is arc-shaped. Of course, it should be noted that the cross section of the limiting groove 1.3 can also be square or V-shaped or other shapes.
[0032] The puncture pressure plate 2 is located above the conductive top seat 1.1. Specifically, the puncture pressure plate 2 and the two rotating pressure plates 3 are distributed along the length direction of the limiting slot 1.3, and the puncture pressure plate 2 is located between the two rotating pressure plates 3. The puncture pressure plate 2 and the two rotating pressure plates 3 are both located above the limiting slot 1.3. The puncture pressure plate 2 is connected to the conductive top seat 1.1 by a first bolt 4. A plurality of puncture teeth 2.1 are provided on the lower surface of the puncture pressure plate 2. A plurality of puncture teeth are also provided in the limiting slot 1.3 located directly below the puncture pressure plate 2.
[0033] One side of the rotating pressing plate 3 is hinged on the conductive top seat 1.1, and the other side of the rotating pressing plate 3 is connected to the conductive top seat 1.1 through a second bolt 5.
[0034] Specifically, a first screw hole 8 is provided on the conductive top seat 1.1. The first bolt 4 is threadedly connected to the first screw hole 8. In the present embodiment, there are two first bolts 4, and the two first bolts 4 are distributed on opposite sides of the limiting through slot 1.3. Two first bolt through holes are provided on the conductive top seat 1.1. The first bolt 4 passes through the first bolt through hole and is connected to the corresponding first screw hole 8. By locking the puncture pressure plate 2 with two first bolts 4 distributed on opposite sides of the limiting through slot 1.3, it is possible to ensure that the puncture pressure plate 2 presses the insulated wire and that the puncture teeth on the puncture pressure plate 2 penetrate the insulation layer of the insulated wire and are electrically connected to the conductor of the insulated wire.
[0035] The conductive top seat 1.1 is provided with a second screw hole 6. The second screw hole 6 corresponds to the rotating pressure plate 3. The rotating pressure plate 3 is provided with a second bolt through hole 3.1. The second bolt 5 passes through the second bolt through hole 3.1 and is threadedly connected with the corresponding second screw hole 6. The hinge shaft on one side of the rotating pressure plate 3 and the second bolt 5 are located on opposite sides of the limiting through groove 1.3.
[0036] The rotating pressing plate 3 is provided with a wire pressing groove 3.2 with an opening facing downward. In this way, the insulated wire can be limited by the wire pressing groove 3.2 to improve the installation stability of the insulated wire. In this embodiment, the cross section of the wire pressing groove 3.2 is arc-shaped. Of course, it should be noted that the cross section of the wire pressing groove 3.2 can also be V-shaped or other shapes.
[0037] The puncture pressing plate 2 is provided with a puncture wire groove with an opening facing downward, and the puncture teeth on the puncture pressing plate 2 are arranged in the puncture wire groove. In this way, the insulated wire can be limited by the puncture wire groove, the installation stability of the insulated wire can be improved, and the puncture teeth on the puncture pressing plate 2 can penetrate the insulation layer of the insulated wire and be electrically connected to the conductor of the insulated wire. In this embodiment, the cross section of the puncture wire groove is arc-shaped.
[0038] The specific use of the combined lightning protection puncture insulator of this embodiment is as follows: The conductive base 1.2 is mounted on the cross arm of the pole through connecting bolts, so that a combined lightning protection puncture insulator is mounted on the cross arm of the pole through the conductive base 1.2.
[0039] The second bolts 5 of the two rotating pressing plates 3 are sequentially tightened, and the insulated wire is first fixed on the conductive top seat 1.1 through the two rotating pressing plates 3.
[0040] Next, tighten the first bolt 4, press the insulated wire through the puncture plate 2, and make the puncture teeth on the puncture plate 2 penetrate the insulation layer of the insulated wire and electrically connect with the conductor of the insulated wire. In this way, the fixed part of the insulated wire (the part of the insulated wire corresponding to the rotating plate 3) and the wire puncture connection part (the part of the insulated wire corresponding to the puncture plate 2) are set at different positions of the insulated wire. At the same time, since the puncture plate 2 is located between the two rotating plates 3, the force generated when the insulated wire between the two lightning rod insulators 1 shakes will act on the fixed part corresponding to the rotating plate 3, and will not affect the wire puncture connection part; thereby effectively solving the problem that each vibration of the insulated wire will cause wear between the conductor of the wire and the puncture teeth, causing the gap between the conductor and the puncture teeth to be easily generated and continuously enlarged during the long-term operation of the lightning rod insulator 1, so that the contact resistance of the wire puncture point continues to increase, and the current carrying capacity is under normal conditions; thereby avoiding the problem of burns at the wire puncture connection part after the line is struck by lightning, lightning breakage and other faults.
[0041] Specific embodiment three, as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a combined lightning protection piercing insulator includes an insulator 1, a piercing pressure plate 2, two rotating pressure plates 3, a receiving groove 9, an unlocking rocker 10, a locking rocker 11, an elastic member and a limit member 13.
[0042] The upper end of the insulator 1 is provided with a conductive top seat 1.1. Specifically, the lower end of the insulator 1 is provided with a conductive base 1.2, and the conductive upper seat is electrically connected to a drain rod. The outer side surface of the conductive base 1.2 is provided with an arc-inducing protrusion that matches the drain rod. One end of the drain rod is electrically connected to the conductive upper seat. A discharge gap is formed between the other end of the drain rod and the conductive base 1.2, specifically, a discharge gap is formed between the other end of the drain rod and the arc-inducing protrusion of the conductive base 1.2.
[0043] The upper surface of the conductive top seat 1.1 is provided with a limiting groove 1.3, which passes through the upper surface of the conductive top seat 1.1. In this way, the insulated wire can be limited by the limiting groove 1.3 to improve the installation stability of the insulated wire. In this embodiment, the cross section of the limiting groove 1.3 is arc-shaped. Of course, it should be noted that the cross section of the limiting groove 1.3 can also be square or V-shaped or other shapes.
[0044] The puncture pressure plate 2 is located above the conductive top seat 1.1. The puncture pressure plate 2 and the two rotating pressure plates 3 are distributed along the length direction of the limiting slot 1.3, and the puncture pressure plate 2 is located between the two rotating pressure plates 3. The puncture pressure plate 2 and the two rotating pressure plates 3 are both located above the limiting slot 1.3. A plurality of puncture teeth 2.1 are provided on the lower surface of the puncture pressure plate 2. A plurality of puncture teeth are also provided in the limiting slot 1.3 located directly below the puncture pressure plate 2.
[0045] The puncture pressure plate 2 is connected to the conductive top seat 1.1 through the first bolt 4. Specifically, a first screw hole 8 is provided on the conductive top seat 1.1. The first bolt 4 is threadedly connected to the first screw hole 8. In this embodiment, there are two first bolts 4 and two first screw holes 8. The two first screw holes 8 are distributed on opposite sides of the limiting through groove 1.3, and the two first bolts 4 are distributed on opposite sides of the limiting through groove 1.3. Two first bolt through holes are provided on the conductive top seat 1.1. The first bolt 4 passes through the first bolt through hole and is connected to the corresponding first screw hole 8. By locking the puncture pressure plate 2 with two first bolts 4 distributed on opposite sides of the limiting through groove 1.3, it can be ensured that the puncture pressure plate 2 presses the insulated wire, and the puncture teeth on the puncture pressure plate 2 penetrate the insulation layer of the insulated wire and are electrically connected to the conductor of the insulated wire.
[0046] One side of the rotating pressing plate 3 is hinged on the conductive top seat 1.1, and the other side of the rotating pressing plate 3 is connected to the conductive top seat 1.1 through the second bolt 5. Specifically, the conductive top seat 1.1 is provided with a second screw hole 6. The second screw hole 6 corresponds to the rotating pressing plate 3 one by one. The rotating pressing plate 3 is provided with a second bolt through hole 3.1. The second bolt 5 passes through the second bolt through hole 3.1 and is threadedly connected to the corresponding second screw hole 6. The hinge shaft on one side of the rotating pressing plate 3 and the second bolt 5 are located on opposite sides of the limiting through groove 1.3.
[0047] The rotating pressing plate 3 is provided with a wire pressing groove 3.2 with an opening facing downward. In this way, the insulated wire can be limited by the wire pressing groove 3.2 to improve the installation stability of the insulated wire. In this embodiment, the cross section of the wire pressing groove 3.2 is arc-shaped. Of course, it should be noted that the cross section of the wire pressing groove 3.2 can also be V-shaped or other shapes.
[0048] The puncture pressing plate 2 is provided with a puncture wire groove with an opening facing downward, and the puncture teeth on the puncture pressing plate 2 are arranged in the puncture wire groove. In this way, the insulated wire can be limited by the puncture wire groove, the installation stability of the insulated wire can be improved, and the puncture teeth on the puncture pressing plate 2 can penetrate the insulation layer of the insulated wire and be electrically connected to the conductor of the insulated wire. In this embodiment, the cross section of the puncture wire groove is arc-shaped.
[0049] The receiving groove 9 corresponds to the second screw hole 6 one by one. The receiving groove 9 communicates with the corresponding second screw hole 6 and one of the first screw holes 8. Specifically, one of the first screw holes 8 and the second screw hole 6 are distributed on the same side of the limiting through groove 1.3. The first screw hole 8 is connected with the second screw hole 6 through the receiving groove 9. The two receiving grooves 9 corresponding to the second screw holes 6 are both located on the same side of the limiting through groove 1.3. The opening of the receiving groove 9 faces upward.
[0050] The unlocking swing rod 10 corresponds to the second screw hole 6 one by one. The unlocking swing rod 10 is rotatably arranged in the receiving groove 9, the rotating shaft of the unlocking swing rod 10 is located in the receiving groove 9, and the unlocking swing rod 10 is close to the corresponding second screw hole 6, and the unlocking swing rod 10 is close to the upper end of the corresponding second screw hole 6.
[0051] The locking rocker 11 corresponds to the unlocking rocker 10 one by one. The locking rocker 11 is rotatably arranged in the receiving groove 9, the rotating shaft of the locking rocker 11 is located in the receiving groove 9, the locking rocker 11 and the corresponding unlocking rocker 10 are located in the same receiving groove 9, and the locking rocker 11 is close to the first screw hole 8, and the locking rocker 11 is close to the upper end of the first screw hole 8. The lower end of the locking rocker 11 is hingedly connected to the lower end of the corresponding unlocking rocker 10 through a connecting rod 12. Specifically, one end of the connecting rod 12 is hingedly connected to the lower end of the locking rocker 11, and the other end of the connecting rod 12 is hingedly connected to the lower end of the corresponding unlocking rocker 10. In this embodiment, the locking rocker 11 is parallel to the corresponding unlocking rocker 10.
[0052] The lower end of the unlocking pendulum 10 rotates into the second screw hole 6 under the action of the elastic member, and the upper end of the locking pendulum 11 rotates into the first screw hole 8 under the action of the elastic member. The elastic member is a torsion spring or a tension spring. In this embodiment, the elastic member is a torsion spring. The torsion spring corresponds to the locking pendulum 11 one by one. The torsion spring is sleeved on the rotating shaft of the corresponding locking pendulum 11, and one end of the torsion spring abuts against the locking pendulum 11, and one end of the torsion spring abuts against the protrusion on the inner wall of the receiving groove 9. Of course, it should be noted that the elastic member can also be provided on the unlocking pendulum 10, or both the unlocking pendulum 10 and the locking pendulum 11 are provided with elastic members.
[0053] The limiter 13 is arranged on the inner wall of the receiving groove 9. The limiter 13 limits the rotation angle of the unlocking pendulum 10 and the locking pendulum 11 under the action of the elastic member. In this embodiment, the limiter 13 corresponds to the locking pendulum 11 one by one, and the upper end of the locking pendulum 11 rotates into the first screw hole 8 under the action of the elastic member until the locking pendulum 11 abuts against the corresponding limiter 13. At this time, the upper end of the locking pendulum 11 extends into the first screw hole 8, the lower end of the locking pendulum 11 is located in the receiving groove 9, and the lower end of the unlocking pendulum 10 rotates to the corresponding second screw hole 6, and the upper end of the unlocking pendulum 10 is located in the receiving groove 9.
[0054] Since the lower end of the unlocking swing rod 10 rotates into the corresponding second screw hole 6 , the upper end of the unlocking swing rod 10 is located in the receiving groove 9 ; thus, it will not affect the locking of the second bolt 5 in the second screw hole 6 .
[0055] When the second bolt 5 is locked in the second screw hole 6 , the lower end of the unlocking swing rod 10 abuts against the side wall of the second bolt 5 , and the locking swing rod 11 is completely accommodated in the accommodating groove 9 .
[0056] The specific use of the combined lightning protection puncture insulator of this embodiment is as follows: The conductive base 1.2 is mounted on the cross arm of the pole through connecting bolts, so that a combined lightning protection puncture insulator is mounted on the cross arm of the pole through the conductive base 1.2.
[0057] The second bolts 5 of the two rotating pressure plates 3 are locked in sequence, and the insulated wire is first fixed on the conductive top seat 1.1 through the two rotating pressure plates 3. At this time, the lower end of the unlocking swing rod 10 is against the side wall of the second bolt 5, and the locking swing rod 11 is completely accommodated in the accommodating groove 9; in this way, the locking swing rod 11 will not restrict the installation of the next first bolt 4.
[0058] Next, the two first bolts 4 are locked, the insulated wire is pressed by the puncture plate 2, and the puncture teeth on the puncture plate 2 penetrate the insulation layer of the insulated wire and are electrically connected to the conductor of the insulated wire. In this way, the fixed part of the insulated wire (the part of the insulated wire corresponding to the rotating plate 3) and the wire puncture connection part (the part of the insulated wire corresponding to the puncture plate 2) are set at different positions of the insulated wire. At the same time, since the puncture plate 2 is located between the two rotating plates 3, the force generated when the insulated wire between the two lightning rod insulators 1 shakes will act on the fixed part corresponding to the rotating plate 3, and will not affect the wire puncture connection part; thereby effectively solving the problem that each vibration of the insulated wire will cause wear between the conductor of the wire and the puncture teeth, resulting in the long-term operation of the lightning rod insulator 1. The gap between the conductor and the puncture teeth is easy to be generated and continues to increase, so that the contact resistance of the wire puncture point continues to increase, and the current carrying capacity is under normal conditions; thereby avoiding the problem of burns at the wire puncture connection part after the line is struck by lightning, lightning breakage and other faults.
[0059] In addition, the combined lightning protection piercing insulator of the present application requires the operator to lock the two rotating pressure plates 3 first during actual use. However, during the actual installation process, the operator may be careless and fail to install one or both of the pressure plates. As a result, during long-term operation, a gap between the piercing teeth and the conductor of the insulated wire will continue to grow, causing burns at the wire piercing connection site and wire breakage after the line is struck by lightning. In order to solve this problem, this embodiment improves a combined lightning protection piercing insulator. Specifically, When the operator installs the device according to the standard, he first tightens the second bolt 5, and fixes the insulated wire on the conductive top seat 1.1 through the two rotating pressure plates 3. At this time, the lower end of the unlocking rocker 10 abuts against the side wall of the second bolt 5, and the locking rocker 11 is completely accommodated in the accommodating groove 9; in this way, the locking rocker 11 will not restrict the subsequent installation of the first bolt 4; then, the first bolt 4 is locked, the insulated wire is pressed by the piercing pressure plate 2, and the piercing teeth on the piercing pressure plate 2 penetrate the insulation layer of the insulated wire and are electrically connected to the conductor of the insulated wire.
[0060] If, during the actual installation process, as long as one rotating pressure plate 3 is not installed (i.e., one of the second bolts 5 is installed in the corresponding second screw hole 6), the lower end of the unlocking rocker arm 10 in the second screw hole 6 corresponding to the rotating pressure plate 3 will rotate into the second screw hole 6 under the action of the elastic member, and the upper end of the locking rocker arm 11 corresponding to the unlocking rocker arm 10 will rotate into the first screw hole 8 under the action of the elastic member, and the locking rocker arm 11 will restrict the first bolt 4 from being installed in the first screw hole 8; in this way, during the process of locking the first bolt 4 and installing the piercing pressure plate 2, the first bolt 4 is restricted by the locking rocker arm 11 and cannot be locked in the first screw hole 8; thereby forcing the operator to perform the standard installation, first locking the second bolts 5 of the two rotating pressure plates 3, and fixing the insulated wire to the conductive top seat 1.1 through the two rotating pressure plates 3; then, locking the first bolt 4, and pressing the insulated wire through the piercing pressure plate 2.
[0061] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any way. Any simple modification, change and equivalent transformation made to the above embodiment based on the technical essence of the present invention still falls within the protection scope of the technical solution of the present invention.
Claims
1. A combined lightning protection puncture insulator, comprising: An insulator, the upper end of which is provided with a conductive top seat; The puncture pressure plate is located above the conductive top seat, and the puncture pressure plate and the conductive top seat are connected by a first bolt; its characteristics are: Also includes: Two rotating pressure plates, the puncture pressure plate is located between the two rotating pressure plates, one side of the rotating pressure plate is hinged on the conductive top seat, and the other side of the rotating pressure plate is connected to the conductive top seat by a second bolt; the conductive top seat is provided with a first screw hole and a second screw hole, the first bolt is threadedly connected to the first screw hole, the second screw hole corresponds to the rotating pressure plate one by one, and the second bolt is threadedly connected to the corresponding second screw hole.
2. A combined lightning protection puncture insulator according to claim 1, characterized in that include: An accommodating groove corresponding to the second screw holes one by one, the accommodating groove communicating with the corresponding second screw hole and one first screw hole; An unlocking swing rod corresponding to the second screw hole one by one and rotatably arranged in the receiving groove; A locking rocker rod corresponding to the unlocking rocker rod is rotatably arranged in the receiving groove, and the lower ends of the locking rocker rod and the unlocking rocker rod are hingedly connected via a connecting rod; The lower end of the unlocking swing rod rotates into the second screw hole under the action of the elastic member, and the upper end of the locking swing rod rotates into the first screw hole under the action of the elastic member; When the second bolt is locked in the second screw hole, the lower end of the unlocking swing rod abuts against the side wall of the second bolt, and the locking swing rod is completely accommodated in the accommodating groove.
3. A combined lightning protection puncture insulator according to claim 2, characterized in that: It also includes a limiting member arranged in the accommodating groove, which limits the rotation angle of the unlocking rocker arm and the locking rocker arm under the action of the elastic member.
4. A combined lightning protection puncture insulator according to claim 1, 2 or 3, characterized in that: A limiting through slot is arranged on the upper surface of the conductive top seat, and the puncture pressure plate and the two rotating pressure plates are distributed along the length direction of the limiting through slot, and the puncture pressure plate and the two rotating pressure plates are both located above the limiting through slot.
5. A combined lightning protection puncture insulator according to claim 4, characterized in that: The hinge shaft on one side of the rotating pressure plate and the second bolt are located on opposite sides of the limiting through slot.
6. The combined lightning protection puncture insulator according to claim 4 is characterized in that: There are two first bolts, and the two first bolts are distributed on two opposite sides of the limiting through slot.
7. The combined lightning protection puncture insulator according to claim 4 is characterized in that: The cross section of the limiting through groove is in an arc shape.
8. A combined lightning protection puncture insulator according to claim 1, 2 or 3, characterized in that: The rotating pressing plate is provided with a wire pressing groove opening downward.
9. A combined lightning protection puncture insulator according to claim 1, 2 or 3, characterized in that: The puncture pressing plate is provided with a puncture wire groove with its opening facing downwards.
10. The combined lightning protection puncture insulator according to claim 9, characterized in that: The cross section of the puncture wire groove is in an arc shape.