A transmission line disconnection device

Abstract

The present invention discloses a transmission line decoupling device, belonging to the field of power transmission equipment, which includes a support base; a gusset A, one end of which can be rotated and reset to be closely hinged to the side of the support base, for example, a deformed elastic plastic rod is used to connect the gusset A to the side of the support base; a decoupling seat, the lower part of the decoupling seat is hinged to the support base by a hinge, the other end of the gusset A is detachably engaged and connected to the middle part of the decoupling seat, and a notch for placing the cable is arranged on the top edge of the decoupling seat. The support base is fixed on the insulator on the pole, the gusset A rotates with the elastic plastic rod as the origin to be engaged with the decoupling seat, and the cable is installed on the notch of the decoupling seat. When the cable is pulled by strong wind or hit by branches or pulled by adjacent connected cables, it is ensured that the cable is not broken, and the pole will not form a pulling force on the pole due to the cable being decoupled, and the pole fixing the cable itself and the adjacent pole will not be broken.

Description

Technical Field

[0001] The invention belongs to the field of power transmission equipment and relates to a transmission line disconnecting device. Background Art

[0002] With the rapid development of my country's economy and the gradual improvement of living standards, people's requirements for the reliability of power supply have also increased. At present, in densely populated areas such as cities, towns and urban areas, insulated high-voltage cables are used to protect people's safety. However, in coastal areas, which are attacked by typhoons every year, strong winds will break a large number of cables connected to each other. The charged broken cables are connected to the surface water on the road, which will electrocute people and animals. At the same time, they will also break multiple poles supporting the connected cables. The broken poles can easily injure people and animals in motion, making it easy to break wires or poles after the typhoon and cause deaths. According to actual situation analysis, when a cable or pole is hit by a branch blown up by the strong wind, the cable will be pulled up by the branch, or a pole is broken, and the connected cables will pull the adjacent cables, causing a vicious chain reaction.

[0003] It can be seen from this that it is necessary to provide a device that allows the cable to automatically fall off the insulator on the pole during strong winds. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a transmission line disconnection device.

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

[0006] The present invention provides a transmission line disconnection device, which includes a support base;

[0007] A gusset plate A, one end of which can be rotated and reset to be closely hinged to the side of the support base, for example, a deformable elastic plastic rod is used to connect the gusset plate A to the side of the support base;

[0008] The lower part of the off-line seat is hinged to the support base by a hinge, the other end of the gusset plate A is detachably connected to the middle part of the off-line seat, and a notch is provided on the top edge of the off-line seat for placing the cable.

[0009] The beneficial effects of the present invention are as follows: the supporting base is fixed on the insulator on the electric pole, the buckle plate A rotates with the elastic plastic rod as the origin until it is buckled with the off-line seat, and the cable is installed on the notch of the off-line seat. When the cable is blown by strong wind or hit by tree branches or pulled by adjacent connected cables, the shaking force of the cable is greater than the tight contact force between the buckle plate A and the supporting base, the cable will drive the off-line seat to rotate, the off-line seat will be separated from the buckle plate A, and the cable will come out of the notch of the off-line seat, ensuring that the cable is not broken. Due to the cable coming out, the electric pole will not form a pulling force on the electric pole, and the electric pole fixing the cable itself and the adjacent electric pole will not be broken.

[0010] Preferably, it also includes a buckle plate B, and both ends of the buckle plate B are installed on the other side of the off-line seat and the support base like the buckle plate A, so that the buckle plates A and B form a double-sided firm lock for the rotatable off-line seat, thereby improving the stability of the off-line seat in normal use when there is no strong wind or when it is not pulled, so that the cable is firmly located in the gap of the off-line seat under normal circumstances.

[0011] Preferably, through holes are provided on the two side plates of the off-line seat, and through holes are also provided on the two side plates of the supporting base corresponding to the through holes of the off-line seat. The rotating rod is respectively inserted into and installed in the through holes of the off-line seat and the through holes of the supporting base. The rotating rod is fixed in the through holes of the supporting base by interference fit or thread fit, so that the off-line seat and the supporting base are hinged. The two ends of the rotating rod are limited by nuts to facilitate disassembly and improve the rotation stability of the off-line seat.

[0012] Positioning blocks are fixedly installed on both sides of the off-line seat, a slot A is fixedly connected to the connection end of the off-line seat on the buckle plate A, and a slot B is fixedly connected to the connection end of the off-line seat on the buckle plate B. The slots A and B cooperate with the positioning blocks respectively to achieve a snap connection with the off-line seat.

[0013] Preferably, through holes are provided on both sides of the off-line seat, and the positioning blocks are inserted into the through holes of the two side plates fixedly installed on the off-line seat by interference fit or threaded fit, and the two ends of the positioning blocks located on both sides of the off-line seat are respectively engaged with the slot A of the buckle plate A and the slot B of the buckle plate B, and the two ends of the positioning blocks are limited by nuts, so that the pulling force of the buckle plates A and B on the two ends of the positioning blocks is evenly dispersed to the off-line seat, thereby improving the consistency of the rotation of the off-line seat and facilitating the rapid disengagement of the cable when it is disengaged.

[0014] The contact points between the off-line seat, gusset A or gusset B, and the support base form a stable force-bearing triangle; the formed triangle is preferably a right-angled triangle, with gusset A and gusset B as the longest sides, so that gusset A and gusset B can enable the off-line seat to obtain greater force under normal conditions, making the off-line seat more stable.

[0015] The off-line seat is composed of two side panels and a bottom plate, and the two side panels are vertically fixed and connected on both sides of the bottom plate to form an integral part; the top edges of the two side panels are provided with notches for placing the cables, and the centers of the notches are collinear. On the basis of reducing the weight of the off-line seat using an integral block, it is ensured that the force on the cable forms a straight line at two points, thereby ensuring the stability of the cable under normal conditions.

[0016] Preferably, the notch of the wire-stripping seat is an arc-shaped notch to facilitate cooperation with the cylindrical cable.

[0017] Preferably, it also includes a torsion spring A and a torsion spring B, one end of the torsion spring A extends into the through hole set on the buckle plate A, and the other end of the torsion spring A is fixedly connected to the support base, at which time the torsion spring A is in the maximum torsion state, and when the buckle plate A and the support base are perpendicular, the torsion spring A is in a normal state, at which time the buckle plate A and the support base are no longer in close contact but have a gap, and the buckle plate A and the support base are no longer connected by an elastic plastic rod; one end of the torsion spring B extends into the through hole of the buckle plate B, and the other end of the torsion spring B is fixedly connected to the support base, at which time the torsion spring B is in the maximum torsion state, and when the buckle plate B and the support base are perpendicular, the torsion spring B is in a normal state, at which time the buckle plate B and the support base are no longer in close contact but have a gap, and the buckle plate Plate B and the supporting base are no longer connected by elastic plastic rods; under the action of torsion springs A and B, the slot A at the end of plate A and the slot B at the end of plate B are more tightly fastened to the positioning block, while ensuring that when the cable shakes too much, once the cable is detached from the notch on the de-wire seat, under the action of the inertial force of torsion springs A and B returning to normal, plate A and plate B are quickly separated from the de-wire seat, the cable will drive the de-wire seat to rotate quickly, and the cable will quickly come out of the notch of the de-wire seat. If the cable comes out of the notch of the de-wire seat very slowly, it will easily break, and its own force will be transmitted to the connected adjacent pole, causing the adjacent pole to be subjected to excessive torque and break.

[0018] Preferably, it also includes a rotating shaft, which is sequentially inserted into the through hole set in the buckle plate A, the center of the torsion spring A, the through holes set on both sides of the support base, the through holes set in the buckle plate B, and the center of the torsion spring B; at this time, the connecting ends of the torsion spring A and the torsion spring B and the support base are fixedly connected to the rotating shaft; both ends of the rotating shaft are limited by nuts, and the rotating shaft is fixed in the through holes set on both sides of the support base by interference fit or threaded fit, so that the vibration of the torsion spring A and the torsion spring B during the reset rotation is transmitted to the support base, reducing the overall resonance amplitude, and at the same time improving the stability of the force fixed by the torsion spring A to the buckle plate A and the torsion spring B to the buckle plate B, thereby promoting the locking firmness of the buckle plate A and the buckle plate B to the off-line seat in the normal state, and improving the vibration resistance of the buckle plate A and the buckle plate B connected to the support base through the torsion spring A and the buckle plate B through the torsion spring B.

[0019] To facilitate disassembly, preferably, through holes for installing the ends of the torsion spring A and the torsion spring B are respectively provided at both ends of the rotating shaft.

[0020] The invention also includes an anti-slip component A and an anti-slip component B. Both of the anti-slip components A and B are L-shaped. One end of the anti-slip component A and the anti-slip component B are fixedly connected to the support base bolts, and the other ends of the anti-slip component A and the anti-slip component B are respectively located above the notches on both sides of the off-line seat. The minimum distance between the anti-slip component A and the anti-slip component B and the notch of the off-line seat is flush with the top edge of the off-line seat and cannot exceed the cable diameter. When there is no typhoon or other strong wind in the normal state, it is avoided that natural small wind or vibration makes it easy for the cable to slip out of the notch of the off-line seat, thereby improving the stability of the cable in the normal state, and ensuring that when the strong wind caused by typhoon causes the buckle plate A and the buckle plate B to be disconnected from the off-line seat, the cable is separated from the notch of the off-line seat by the rotation of the off-line seat itself.

[0021] Preferably, a through hole is provided in the middle of the anti-slip parts A and B, and the through hole is matched with the clearance of the rotating shaft. When the anti-slip parts A and B are fixed in a normal state, the anti-slip parts A and B can be restricted in movement by the rotating shaft and the supporting base. Even if the bolts fixed to the supporting base are loosened, the anti-slip parts A and B are still subjected to the force at the two points, thereby improving the stability of the anti-slip parts A and B. When the detached cable needs to be installed, the rotating shaft is still hung when the bolts of the anti-slip parts A and B and the supporting base are released, thereby reducing the burden on maintenance personnel, reducing labor intensity, and improving the speed of maintenance.

[0022] A U-shaped ferrule fixedly connected to the insulator is fixed at the bottom of the support base. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention;

[0024] Figure 2 It is a schematic diagram of the connection structure of the gusset plate A, gusset plate B, rotating shaft and torsion spring of the present invention;

[0025] Figure 3 It is a schematic diagram of the connection structure of the anti-slipping member A, the supporting base, the anti-slipping member B, and the ferrule of the present invention;

[0026] Figure 4 It is a schematic structural diagram of a torsion spring A or a torsion spring B of the present invention.

[0027] In the figure: 1-anti-slip part A; 2-slip seat; 3-positioning block; 4-gusset plate A; 5-rotating rod; 6-rotating shaft; 7-support base; 8-torsion spring A; 9-anti-slip part B; 10-gusset plate B; 11-torsion spring B; 12-insulator; 14-ring; 22-slot A; 23-slot B. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the description.

[0029] like Figure 1-4 shown.

[0030] A transmission line disconnection device of the present invention includes a support base 7;

[0031] A buckle plate A4, one end of which can be rotated and reset to be tightly hinged to the side of the support base 7, for example, a deformed elastic plastic rod is used to connect the buckle plate A4 to the side of the support base 7; a wire-off seat 2, the lower part of the wire-off seat 2 is hinged to the support base 7 by a hinge, the other end of the buckle plate A4 is detachably connected to the middle part of the wire-off seat 2 by snapping, and a notch for placing the cable is provided on the top edge of the wire-off seat 2.

[0032] The working principle of the above use is: the support base 7 is fixed on the insulator on the pole, the buckle plate A4 rotates with the elastic plastic rod as the origin until it is buckled with the off-line seat 2, and the cable is installed on the notch of the off-line seat 2. When the cable is blown by strong wind or hit by branches or pulled by adjacent connected cables, the shaking force of the cable is greater than the tight contact force between the buckle plate A4 and the support base 7, the cable will drive the off-line seat 2 to rotate, the off-line seat 2 is separated from the buckle plate A4, and the cable will come out from the notch of the off-line seat 2, ensuring that the cable is not broken. Due to the cable coming out, the pole will not form a pulling force on the pole, and the pole fixing the cable itself and the adjacent pole will not be broken.

[0033] Preferably, it also includes a gusset plate B10, and both ends of the gusset plate B10 are installed on the other side of the off-line seat 2 and the support base 7 like the gusset plate A4, so that the gusset plates A4 and B10 form a double-sided firm lock for the rotatable off-line seat 2, thereby improving the stability of the off-line seat 2 in normal use when there is no strong wind or when it is not pulled, so that the cable is firmly located in the gap of the off-line seat 2 under normal circumstances.

[0034] Preferably, through holes are provided on the two side plates of the off-line seat 2, and through holes are also provided on the two side plates of the supporting base 7 corresponding to the through holes of the off-line seat 2. The rotating rod 5 is respectively inserted into and installed in the through holes of the off-line seat 2 and the through holes of the supporting base 7. The rotating rod 5 is fixed in the through holes of the supporting base 7 by interference fit or thread fit, so that the off-line seat 2 and the supporting base 7 are hinged. The two ends of the rotating rod 5 are limited by nuts to facilitate disassembly and improve the rotation stability of the off-line seat 2.

[0035] Positioning blocks 3 are fixedly installed on both side edges of the off-line seat 2, a slot A22 is fixedly connected to the connecting end of the off-line seat 2 on the buckle plate A4, and a slot B23 is fixedly connected to the connecting end of the off-line seat 2 on the buckle plate B10. The slots A22 and B23 respectively cooperate with the positioning blocks 3 to achieve a snap-on connection with the off-line seat 2.

[0036] Preferably, through holes are provided on both sides of the off-line seat 2, and the positioning block 3 is inserted into the through holes of the two side plates fixedly installed on the off-line seat 2 by interference fit or threaded fit, and the two ends of the positioning block 3 located on both sides of the off-line seat 2 are respectively engaged with the slot A22 of the buckle plate A4 and the slot B23 of the buckle plate B10, and the two ends of the positioning block 3 are limited by nuts, so that the pulling force of the buckle plates A4 and B10 on the two ends of the positioning block 3 is evenly dispersed to the off-line seat 2, thereby improving the consistency of the rotation of the off-line seat 2 and facilitating the rapid disengagement of the cable when it is disengaged.

[0037] The contact points between the off-line seat 2, the gusset A4 or the gusset B10, and the support base 7 form a stable force-bearing triangle; the formed triangle is preferably a right triangle, with the gusset A4 and the gusset B10 as the longest sides, so that the gusset A4 and the gusset B10 can enable the off-line seat 2 to obtain greater force under normal conditions, making the off-line seat 2 more stable.

[0038] The cable stand 2 is composed of two side panels and a bottom panel, and the two side panels are respectively fixed vertically and connected to the two sides of the bottom panel to form an integral part; the top edges of the two side panels are provided with notches for placing the cables, and the centers of the notches are collinear, which ensures that the force on the cable forms a straight line at two points on the basis of reducing the weight of the overall block of the cable stand 2, thereby ensuring the stability of the cable under normal conditions. Preferably, the notch of the cable stand 2 is an arc-shaped notch, so as to facilitate the cooperation with the cylindrical cable.

[0039] Preferably, it also includes a torsion spring A8 and a torsion spring B11, one end of the torsion spring A8 extends into the through hole set on the gusset plate A4, and the other end of the torsion spring A8 is fixedly connected to the support base 7. At this time, the torsion spring A8 is in the maximum torsion state, and when the gusset plate A4 and the support base 7 are perpendicular, the torsion spring A8 is in a normal state, and at this time, the gusset plate A4 and the support base 7 are no longer in close contact but have a gap, and the gusset plate A4 and the support base 7 are no longer connected by an elastic plastic rod; one end of the torsion spring B11 extends into the through hole of the gusset plate B10, and the other end of the torsion spring B11 is fixedly connected to the support base 7. At this time, the torsion spring B11 is in the maximum torsion state, and when the gusset plate B10 and the support base 7 are perpendicular, the torsion spring B11 is in a normal state, and at this time, the gusset plate B10 and the support base 7 are no longer in close contact but have a gap. The interval, the gusset plate B10 and the supporting base 7 are no longer connected by an elastic plastic rod; under the action of the torsion spring A8 and the torsion spring B11, the slot A22 at the end of the gusset plate A4 and the slot B23 at the end of the gusset plate B10 are more tightly fastened with the positioning block 3, while ensuring that when the cable shakes too much, once the cable is detached from the notch on the off-line seat 2, under the action of the inertial force of the torsion spring A8 and the torsion spring B11 returning to normal, the gusset plate A4 and the gusset plate B10 are quickly separated from the off-line seat 2, and the cable will drive the off-line seat 2 to rotate quickly, and the cable will quickly come out of the notch of the off-line seat 2. Because when the cable comes out of the notch of the off-line seat 2 very slowly, it will make the cable break easily, and at the same time, its own force will be transmitted to the connected adjacent pole, which will cause the adjacent pole to bear excessive torque and break.

[0040] Preferably, it also includes a rotating shaft 6, which is sequentially inserted into the through hole set in the buckle plate A4, the center of the torsion spring A8, the through holes set on both sides of the support base 7, the through holes set in the buckle plate B10, and the center of the torsion spring B11; at this time, the connecting ends of the torsion springs A8 and B11 and the support base 7 are fixedly connected to the rotating shaft 6; both ends of the rotating shaft 6 are limited by nuts, and the rotating shaft 6 is fixed in the through holes set on both sides of the support base 7 by interference fit or thread fit, so that the vibration of the torsion springs A8 and B11 during the reset rotation is transmitted to the support base 7, reducing the overall resonance amplitude, and at the same time improving the stability of the torsion spring A8 fixing the buckle plate A4 and the torsion spring B11 fixing the buckle plate B10, thereby promoting the buckle plate A4 and the buckle plate B10 to lock the de-wire seat 2 in the normal state The firmness improves the vibration resistance of the buckle plate A4 connected to the support base 7 through the torsion spring A8 and the buckle plate B10 through the torsion spring B11. In order to facilitate disassembly, preferably, both ends of the rotating shaft 6 are respectively provided with through holes for installing the ends of the torsion spring A8 and the torsion spring B11.

[0041] It also includes an anti-slip component A1 and an anti-slip component B9, which are both L-shaped, one end of the anti-slip component A1 and the anti-slip component B9 is fixedly connected to the support base 7 with bolts, and the other ends of the anti-slip component A1 and the anti-slip component B9 are respectively located above the notches on both sides of the off-line seat 2, and the minimum distance between the anti-slip component A1 and the anti-slip component B9 and the notch of the off-line seat 2 is flush with the top edge of the off-line seat 2 and cannot exceed the cable diameter at most. When there is no typhoon or other strong wind in the normal state, it prevents natural small wind or vibration from making the cable easily slip out of the notch of the off-line seat 2, improves the stability of the cable in the normal state, and ensures that when the strong wind caused by typhoon causes the buckle plate A4 and the buckle plate B10 to be disconnected from the off-line seat 2, the cable is detached from the notch of the off-line seat 2 due to the rotation of the off-line seat 2 itself.

[0042] Preferably, the anti-slipping member A1 and the anti-slipping member B9 are provided with a through hole in the middle, and the through hole is in clearance with the rotating shaft 6. When the anti-slipping member A1 and the anti-slipping member B9 are fixed in a normal state, the anti-slipping member A1 and the anti-slipping member B9 can be restricted in movement by the rotating shaft 6 and the supporting base 7. Even if the bolts fixedly connected to the supporting base 7 are loosened, the anti-slipping member A1 and the anti-slipping member B9 are still subjected to the force of the two points, thereby improving the stability of the anti-slipping member A1 and the anti-slipping member B9; when the detached cable needs to be installed, the anti-slipping member A1 and the anti-slipping member B9 are released from the bolts of the supporting base 7 while the rotating shaft 6 is still hung, thereby reducing the load of maintenance personnel, reducing labor intensity, and increasing the speed of maintenance. The through holes on both sides of the bottom of the supporting base 7 are fixed with U-shaped rings 14 fixedly connected to the insulator 12 by bolts.

Claims

1. A transmission line disconnection device, characterized in that: comprising a supporting base (7); A gusset plate A (4), one end of which can be rotated and reset to be closely hinged to the side of the support base (7); The off-line seat (2) is hinged at the bottom with the support base (7) by a hinge, the other end of the buckle plate A (4) is detachably buckled and connected with the middle of the off-line seat (2), and a notch for placing the cable is arranged at the top edge of the off-line seat (2); It also includes a gusset plate B (10), the two ends of which are respectively connected to the off-line seat (2) and the other side of the support base (7); It also includes a positioning block (3), which is fixedly mounted on the through holes on both sides of the de-wire seat (2) and extends outward, and the two ends of the positioning block (3) are respectively connected to the card slot A (22) of the pinch plate A (4) and the card slot B (23) of the pinch plate B (10) to form a snap connection; It also includes a rotating rod (5), which is fixedly installed in a through hole of the supporting base (7), and the de-wire seat (2) is rotatably connected to the rotating rod (5); It also includes a torsion spring A (8), the two ends of which are respectively fixedly connected to the gusset plate A (4) and the support base (7); A torsion spring B (11), the two ends of which are respectively fixedly connected to the gusset plate B (10) and the support base (7); The device also includes a rotating shaft (6), the rotating shaft (6) is inserted into the gusset plate A (4), the torsion spring A (8), the support base (7), the gusset plate B (10), and the torsion spring B (11) in sequence, the rotating shaft (6) is connected to the gusset plate A (4) and the gusset plate B (10) via the torsion spring A (8) and the torsion spring B (11), and the rotating shaft (6) is fixedly connected to the support base (7); The utility model also comprises an anti-slipping part A (1) and an anti-slipping part B (9), both of which are L-shaped, one end of which is fixedly connected to the support base (7) by bolts, and the other ends of which are respectively located above the notches on both sides of the off-line seat (2), and the minimum distance between the anti-slipping part A (1) and the anti-slipping part B (9) and the notch of the off-line seat (2) is flush with the top edge line of the off-line seat (2), and the maximum distance cannot exceed the cable diameter.

2. The power transmission line disconnection device according to claim 1, characterized in that: The anti-slipping member A (1) and the anti-slipping member B (9) are provided with through holes in the middle thereof which are loosely matched with the rotating shaft (6).

3. The power transmission line disconnection device according to claim 1, characterized in that: A U-shaped ferrule (14) fixedly connected to the insulator is fixed at the bottom of the support base (7).

4. The power transmission line disconnection device according to claim 1, characterized in that: The contact points between the de-wire seat (2), the gusset plate A (4) and the support base (7) form a stable force-bearing triangle, with the gusset plate A (4) being the longest side.

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