CN116154702A - Protection device against wind deflection of transmission line - Google Patents

Abstract

The invention discloses a wind deflection prevention protection device for a power transmission line, wherein a connecting seat for movably installing a mandrel is arranged at the lower end of a connecting rod, a plurality of insulators are arranged on the shaft body of the mandrel, and a cable clamping mechanism for clamping and releasing a cable is arranged at the lower part of the shaft body of the mandrel; according to the invention, the insulator and the mandrel are connected with the cable frame in a pendulum manner through the connecting seat, so that the problems of loosening, sliding and the like of the bolts existing in the traditional movable bolt hinging are avoided; through the weight hanging mechanism with the weight balancing block, not only the wind deflection preventing performance of the power transmission line can be greatly improved, but also the weight balancing can be increased or reduced according to actual conditions.

Description

Protection device against wind deflection of transmission line

technical field

The invention relates to the technical field of high-voltage power transmission, in particular to a wind deflection protection device for power transmission lines.

Background technique

In recent years, due to climate change, windy weather has gradually increased, which has brought serious threats to the safe operation of power lines. Wind deflection discharge accidents on transmission lines caused by strong winds have occurred frequently. The length of the porcelain or glass insulator string is increased, the radius of the gap circle is increased, and the ability to resist wind deflection discharge is reduced; then there are a large number of applications of composite insulators, because composite insulators are light in weight and poor in wind deflection resistance, prone to wind deflection discharge accidents For this reason, in order to improve the performance of windproof deflection, the existing windproof insulators increase their weight by adding a counterweight at the lower end. However, there are still some shortcomings in the actual use process:

1. Most of the mandrels in the existing windproof deflection insulators are connected to the cable rack by bolts. Although the bolts are hinged so that they can perform pendulum movements, during long-term activities, the bolts are prone to damage. Loose sliding wires not only easily cause the fall of the windproof deflection insulator, but also bring great inconvenience to the later disassembly;

2. The existing windproof deflection insulators only rely on simple cable clamps to clamp the cables up and down, and the fixing of the cable clamps only depends on bolts, which leads to the failure of the cable clamps during the swing process. The friction and vibration of the cable will not only cause wear on the surface of the cable, but also cause the bolt to loosen, so that the cable cannot be effectively clamped;

3. The existing counterweight is often fixedly connected with the mandrel, which not only greatly increases the difficulty of the staff working at heights, but also because the counterweight quality is fixed, the counterweight is too light in the actual application process to prevent wind The partial effect is not ideal, and the heavy counterweight will also affect the installation of the cable;

4. Although the existing wind deflection insulators can protect the cables against wind deflection to a certain extent, they cannot quickly and effectively protect the cables from force unloading, so that the cables need to swing for a long time before they can stop swinging, and the wind deflection effect is not good. not ideal.

Contents of the invention

In order to overcome the deficiencies in the background technology, the present invention discloses a wind deflection protection device for transmission lines. The present invention realizes the pendulum connection between the insulator and the mandrel and the cable frame through the connection seat, avoiding the loosening and sliding of the bolts in the traditional bolt movable hinge. Wire and other problems; through the weight suspension mechanism that can be installed with counterweights, not only can the windproof performance of the transmission line be greatly improved, but also the counterweight can be increased or decreased according to the actual situation.

To achieve the above object, the present invention adopts the following technical solutions:

A protection device against wind deflection of a power transmission line, comprising a connecting rod fixedly connected to a cable rack, the lower end of the connecting rod is provided with a connecting seat for movable installation of a mandrel, the connecting seat includes a connecting block and a sealing plate, and the lower part of one side of the connecting block is provided with a The inner wall on both sides of the storage tank is a symmetrical concave arc surface. The bottom of the storage tank is provided with a movable opening. At its end, there is a circular connector that matches the concave arc surface on both sides of the placement groove. It performs pendulum movement with the movable port. There are multiple insulators on the shaft body of the mandrel. The lower part of the shaft body of the mandrel is equipped with a cable clamping mechanism for clamping and clamping the cables. The heavy hammer suspension mechanism with cable wind resistance performance, the heavy hammer suspension mechanism includes an upper counterweight plate and a lower counterweight plate, and several detachable installations are installed between the upper counterweight plate and the lower counterweight plate to improve the quality of the heavy hammer suspension mechanism. of counterweights.

Further, both sides of the notch of the placement slot are provided with extension edges, and the opposite surfaces of the two extension edges are provided with inner folds, and the sealing plate realizes sliding sealing to the slot opening of the placement slot through the extension edges and the inner folds.

Further, the circular connector is provided with a through hole, the inner wall of the placement groove is provided with a screw hole B corresponding to the through hole and passing through the connection block, and the surface of the sealing plate is provided with a screw hole A corresponding to the through hole. The bolts pass through the screw hole A, the through hole and the screw hole B in sequence to realize the fixed installation of the sealing plate and the limit protection of the circular joint.

Further, the cable clamping mechanism includes an upper splint and a lower splint, the mandrel runs through the upper splint and the lower splint in sequence, the upper splint and the mandrel are in clearance fit, the lower splint is fixedly connected to the mandrel, and the upper surface of the lower splint is provided with a The lower clamping slot of the cable, the lower surface of the upper splint is provided with the upper clamping slot of the cable to match the lower clamping slot of the cable, and is used to clamp and fix the cable. The upper splint and the lower splint are connected by fastening screws Limit lock.

Further, a protrusion is provided in the middle of the upper surface of the lower splint, and a notch matching the protrusion is provided in the middle of the lower surface of the upper splint.

Further, there are several rotation shafts evenly distributed on the outer end surface of the lower splint, and the rotation shafts are connected to the limit rods, and the rod body of the limit rods is provided with several laps at intervals, and several joints corresponding to the several rotation shafts are evenly distributed on the outer end surface of the upper splint. The limit block and the limit rod are rotated by the rotating shaft, and the overlap is buckled on the corresponding limit hole to realize the secondary limit protection of the upper splint and the lower splint.

Further, the upper surface of the upper splint and the lower surface of the lower splint, as well as the upper surface of the upper weight plate and the lower surface of the lower weight plate are all convex arc surfaces.

Further, the mandrel gap runs through the upper counterweight plate, and the lower end of the mandrel is fixedly connected to the lower counterweight plate, and the upper surface of the lower counterweight plate is evenly distributed with several lower slots for clamping the counterweight, and the upper counterweight plate The lower surface is provided with several upper draw-in slots corresponding to the lower draw-in slots one by one, and the upper counterweight plate and the lower counterweight plate are fixedly connected by mounting screws.

Further, a protection mechanism for unloading and buffering the swinging mandrel is provided between adjacent mandrels. The protection mechanism includes a telescopic rod and a spring. The inner rod end and the outer rod end of the telescopic rod are respectively connected to the The mandrel is hingedly connected, and the inner rod body and the outer rod body of the telescopic rod are provided with baffles, and a spring sleeved on the outside of the telescopic rod is arranged between the two baffles.

Further, a protection mechanism is also provided between the mandrel adjacent to the cable frame and the cable frame.

Compared with the prior art, the beneficial effect of the present invention is that the pendulum movement of the mandrel can be ensured through the active cooperation between the connecting seat and the circular joint at the end of the mandrel, and the friction between the mandrel and the connecting seat can be effectively avoided. Detachment, which effectively avoids the problem that the bolts are easy to loosen and slip during the traditional bolt hinge process;

The bolts pass through the corresponding screw holes A, through holes and screw holes B in sequence, which not only realizes the fixed and limited installation of the sealing plate on the connection seat, but also provides secondary protection for the circular joints by the bolts, effectively avoiding circular joints. The shaped connector falls off from the movable port;

By setting the bumps and notches, the clamping cooperation between the bumps and the notches can not only effectively ensure the upper and lower alignment of the upper splint and the lower splint during the clamping process of the upper splint and the lower splint, but also provide a solid foundation for subsequent tightening. The installation of the fixed screw is convenient, and it can also effectively avoid the friction between the upper splint and the lower splint during use, which greatly prolongs the service life of the cable clamping mechanism;

By setting the limit rod and the limit block, after the fastening screw rod fastens the cable clamping mechanism, the joint on the limit rod is used to buckle on the limit block, so as to realize the alignment between the upper splint and the lower splint The secondary limit protection ensures the safe and effective clamping of the cable;

By setting up a heavy hammer suspension mechanism that can be installed with counterweights, it not only facilitates the handling operation of the staff during the installation process, but also can install an appropriate amount of counterweights according to the actual situation during use, effectively increasing the weight suspension mechanism The scope of application provides strong support for the windproof deflection of the cable;

By setting the protection mechanism, when a certain cable swings, the protection mechanism and another connected cable can be used to buffer and unload the force, thereby greatly reducing the swing range of the cable and ensuring the safety of the cable;

The invention realizes the pendulum connection between the insulator and the mandrel and the cable frame through the connecting seat, avoiding the problems of loose bolts and slipping wires existing in the traditional bolt movable hinge; The wind deflection performance is excellent, and the counterweight can be increased or decreased according to the actual situation; through the protection mechanism, the rapid unloading and buffering of the power transmission cable can be realized, and the occurrence of circuit accidents can be effectively avoided; the structure design of the present invention is reasonable and easy to use , which greatly improves the stability of the transmission line, and at the same time improves the windproof performance of the transmission line.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic diagram of the structure of the connecting seat of the present invention;

Fig. 3 is a schematic view of the mandrel structure of the present invention;

Fig. 4 is a schematic structural diagram of the cable clamping mechanism of the present invention;

Fig. 5 is a structural schematic diagram of the weight suspension mechanism of the present invention;

Fig. 6 is a structural schematic diagram of the protection mechanism of the present invention.

In the figure: 1. Connecting rod; 2. Connecting seat; 3. Mandrel; 4. Insulator; 5. Cable clamping mechanism; 6. Heavy hammer suspension mechanism; 7. Sealing plate; 8. Screw holes A, 9, Connection block; 10, extended edge; 11, folded edge; 12, placement groove; 13, screw hole B; 14, concave arc surface; 15, movable port; 16, circular connector; 17, through hole; 18 , upper splint; 19, notch; 20, fastening screw; 21, limit rod; 22, overlap; 23, limit block; 24, fastening screw hole; 25, cable upper slot; 26, rotating shaft ;27, lower cable slot; 28, bump; 29, lower splint; 30, upper counterweight plate; 31, counterweight block; 32, upper slot; 33, installation screw; 34, installation screw hole; 35 , the lower card slot; 36, the lower counterweight plate; 37, the telescopic rod; 38, the baffle plate; 39, the spring; 40, the connecting ear.

Implementation

The technical solutions of the present invention will be described below in conjunction with the accompanying drawings in the embodiments of the present invention. In the description, it should be understood ", "right" and other indicated orientations or positional relationships are only corresponding to the drawings of the present invention. For the convenience of describing the present invention, they do not indicate or imply that the referred devices or elements must have specific orientations.

Please refer to the accompanying drawings 1-6 of the specification, the invention provides a technical solution:

Embodiment 1, a wind deflection protection device for transmission lines, including a connecting rod 1 fixedly connected to the cable rack, the lower end of the connecting rod 1 is provided with a connecting seat 2 for movable installation of the mandrel 3, and the connecting seat 2 includes a connecting block 9 and a seal Plate 7, the lower part of one side of the connecting block 9 is provided with a placement groove 12, the inner walls of both sides of the placement groove 12 are concave arc surfaces 14 arranged symmetrically, the bottom of the placement groove 12 is provided with a movable opening 15, and the outer side of the connecting block 9 is detachable and installed There is a sealing plate 7 for sealing the placement groove 12, the upper end of the mandrel 3 passes through the movable opening 15, and a circular connection matching with the concave arc surface 14 on the inner wall on both sides of the placement groove 12 is provided at its end The head 16 and the mandrel 3 are stuck in the placement groove 12 through the circular connector 16 at the upper end, and pendulum-like activities are performed through the concave arc surface 14 and the movable port 15, and the size of the movable port 15 is smaller than that of the circular connector 16 diameter of;

In order to ensure the sealing of the sealing plate 7 to the placement groove 12 and the positioning of the circular connector 16 in the placement groove 12, the two sides of the notch of the placement groove 12 are provided with extension edges 10, and the opposite surfaces of the two extension edges 10 Both are provided with inner flanges 11, and the sealing plate 7 realizes the sliding seal to the notch of the placement groove 12 through the extension edge 10 and the inner flange 11. Specifically, in order to realize the fixed connection between the sealing plate 7 and the connecting block 9, the sealing plate 7. A screw hole A8 is provided on the plate surface, and a screw hole B13 corresponding to the screw hole A8 is provided on the inner wall of the placement groove 12. The sealing plate 7 is fixedly connected to the connecting block 9 through the screw thread through the screw hole A8 and the screw hole B13;

Further, when the mandrel 3 swings through the circular connector 16 in the placement groove 12, it will inevitably wear with the concave arc surface 14 in the placement groove 12, and the long-term wear will inevitably lead to the size change of the circular connector 16. Small, in order to avoid the circular connector 16 from falling from the movable port 15, the circular connector 16 is provided with a through hole 17 corresponding to the screw hole A8 and the screw hole B13, and the diameter of the through hole 17 is larger than the diameter of the bolt. The through hole 17 does not affect the swing of the circular connector 16, and when the circular connector 16 is worn out, it can be blocked and limited, effectively preventing it from falling off from the movable port 15;

The shaft body of the mandrel 3 is provided with a plurality of insulators 4 , the lower part of the shaft body of the mandrel 3 is provided with a cable clamping mechanism 5 for clamping and clamping the cables, and the lower end of the mandrel 3 is provided with a device for improving the wind resistance of the cables. The weight suspension mechanism 6 of partial performance, the weight suspension mechanism 6 comprises an upper counterweight plate 30 and a lower counterweight plate 36, and several detachable installations between the upper counterweight plate 30 and the lower counterweight plate 36 are used to improve the weight of the weight. The counterweight 31 of suspension mechanism 6 quality.

Embodiment 2, in order to enable the cable clamping mechanism 5 to firmly and effectively clamp the cable and prevent it from wearing the cable due to swinging, the cable clamping mechanism 5 includes an upper splint 18 and a lower splint 29, and the mandrel 3 runs through the upper splint 18 and the lower splint 29 in turn, the upper splint 18 and the mandrel 3 are in clearance fit, the lower splint 29 is fixedly connected with the mandrel 3, the upper middle of the lower splint 29 is provided with a bump 28, and the upper middle of the upper splint 18 is provided with a There is a notch 19 that is compatible with the bump 29, and the snap fit between the bump 29 and the notch 19 can effectively ensure the upper and lower alignment of the upper splint 18 and the lower splint 29, thereby avoiding the gap between the upper splint 18 and the lower splint 29. Friction occurs between the cables to damage the cable;

The upper surface of the lower splint 29 on the outside of the projection 29 is provided with a cable lower clamping groove 27 for clamping cables, and the lower surface of the upper clamping plate 18 on the outside of the notch 19 is provided with a lower clamping groove 27 for clamping cables. Hold the upper clamping groove 25 of the fixed cable, and the outer sides of the upper splint 18 and the lower splint 29 are provided with several upper and lower corresponding fastening screw holes 24, and the fastening screw 20 is threaded through the fastening screw holes 24 to realize the upper clamping. Clamping plate 18 and the limit locking of lower clamping plate 29.

Embodiment 3, since the cable clamping mechanism 5 is locked by the fastening screw 20, the fastening screw 20 and the fastening screw hole 24 tend to loosen during long-term use, resulting in the cable clamping mechanism 5. The cable cannot be effectively clamped. In order to ensure that the cable clamping mechanism 5 can firmly and effectively clamp the cable even if the fastening screw 20 becomes loose during daily use, several rotating shafts 26 are evenly distributed on the outer end surface of the lower clamping plate 29. The rotating shaft 26 is rotated and connected with a limit rod 21, and the bar body of the limit rod 21 is provided with several laps 22 at intervals, and several limit blocks 23 corresponding to the several rotating shafts 26 are evenly distributed on the outer end surface of the upper clamping plate 18. The rod 21 rotates through the rotating shaft 26 and snaps the lap 22 into the corresponding limiting hole 23 to realize the secondary limiting protection of the upper splint 18 and the lower splint 29 .

Embodiment 4, in order to realize the installation and disassembly of the counterweight 31, the gap between the mandrel 3 runs through the upper counterweight plate 30, and the lower end of the mandrel 3 is fixedly connected with the lower counterweight plate 36, and the upper surface of the lower counterweight plate 36 is evenly distributed. A lower draw-in slot 35 for clamping the counterweight 31, the upper counterweight plate 30 lower surface is provided with several upper draw-in slots 32 corresponding to the lower draw-in slot 35 one-to-one, the upper counterweight plate 30 and the lower counterweight plate 36 The outer sides are provided with several corresponding upper and lower mounting screw holes 34, through which the mounting screw rod 33 is screwed through the mounting screw holes 34 to realize the locking and fixing of the upper counterweight plate 30 and the lower counterweight plate 36.

In Embodiment 5, when the cable swings, although the weight suspension mechanism 6 can reduce the swing amplitude of the transmission line, it cannot quickly and effectively unload the power transmission line. There is a protection mechanism for unloading and buffering the swinging mandrel 3. The protection mechanism includes a telescopic rod 37 and a spring 39. The inner rod end and the outer rod end of the telescopic rod 37 are hingedly connected with the adjacent mandrel 3 respectively. The inner rod body and the outer rod body of the telescopic rod 37 are provided with baffles 38, between the two baffles 38 are provided with a spring 39 sleeved on the outside of the telescopic rod 37, and the mandrel 3 adjacent to the cable rack is connected to the cable. There is also a protection mechanism between the racks.

Further, in order to reduce the wind resistance of the cable clamping mechanism 5 and the weight suspension mechanism 6, the upper surface of the upper clamping plate 18 and the lower surface of the lower clamping plate 29, and the upper surface of the upper counterweight plate 30 and the lower surface of the lower counterweight plate 36 are all Convex arc.

The unspecified parts of the present invention are prior art. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and can be implemented in other ways without departing from the spirit or essential features of the present invention. Therefore, no matter from any point of view, the above-mentioned embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended that all changes falling within the meaning and range of equivalency of the claims are embraced in the present invention, and any reference signs in the claims shall not be construed as limiting the content of the claims concerned.

Claims (10)

1. A wind deflection prevention protection device for a power transmission line is characterized in that: comprises a connecting rod (1) fixedly connected with a cable rack, a connecting seat (2) for movably mounting a mandrel (3) is arranged at the lower end of the connecting rod (1), the connecting seat (2) comprises a connecting block (9) and a sealing plate (7), a placing groove (12) is arranged at the lower part of one side of the connecting block (9), inner walls of two sides of the placing groove (12) are inner concave arc surfaces (14) symmetrically arranged, a movable opening (15) is arranged at the bottom of the placing groove (12), the sealing plate (7) for sealing the placing groove (12) is detachably arranged at the outer side of the connecting block (9), the upper end of the mandrel (3) penetrates through the movable opening (15) and a circular connecting head (16) matched with the inner concave arc surfaces (14) on the inner walls of two sides of the placing groove (12) is arranged at the end part of the connecting seat, the mandrel (3) is clamped in the placing groove (12) through a round connector (16) at the upper end and performs pendulum type movement through an inward concave arc surface (14) and a movable opening (15), a plurality of insulators (4) are arranged on the mandrel body of the mandrel (3), a cable clamping mechanism (5) for clamping and placing cables is arranged at the lower part of the mandrel body of the mandrel (3), a weight hanging mechanism (6) for improving the wind deflection resistance of the cables is arranged at the lower end of the mandrel (3), the weight hanging mechanism (6) comprises an upper weight plate (30) and a lower weight plate (36), a plurality of balancing weights (31) for improving the quality of the heavy hammer hanging mechanism (6) are detachably arranged between the upper balancing weight plate (30) and the lower balancing weight plate (36).

2. The transmission line windage yaw protection device of claim 1, wherein: the notch both sides of standing groove (12) all are equipped with outer limit (10), all are equipped with in hem (11) on the opposite face of two outer limit (10), and sealing plate (7) are through outer limit (10) and interior hem (11) realization to the sliding seal of standing groove (12) notch.

3. The transmission line windage yaw protection device of claim 2, wherein: be equipped with through-hole (17) on circular connector (16), standing groove (12) inner wall be equipped with through-hole (17) corresponding, and run through screw B (13) of connecting block (9), sealing plate (7) face be equipped with screw A (8) corresponding with through-hole (17), through screw A (8), through-hole (17) and screw B (13) realization sealing plate (7) fixed mounting in proper order, and to the spacing protection of circular connector (16).

4. The transmission line windage yaw protection device of claim 1, wherein: cable clamping mechanism (5) are including punch holder (18) and lower plate (29), dabber (3) run through punch holder (18) and lower plate (29) in proper order, punch holder (18) and dabber (3) clearance fit, lower plate (29) and dabber (3) fixed connection, lower plate (29) upper portion face is equipped with cable draw-in groove (27) under the cable that are used for the card cable, punch holder (18) lower portion face is equipped with and cooperatees with cable draw-in groove (27), be used for the cable of centre gripping fixed cable on draw-in groove (25), carry out spacing locking through fastening screw (20) between punch holder (18) and the lower plate (29).

5. The transmission line windage yaw protection device of claim 4, wherein: the middle part of the upper part of the lower clamping plate (29) is provided with a convex block (28), and the middle part of the lower part of the upper clamping plate (18) is provided with a notch (19) which is matched with the convex block (29).

6. The transmission line windage yaw protection device of claim 1, wherein: the outer terminal surface evenly distributed of lower plate (29) has several pivot (26), rotates on pivot (26) and is connected with gag lever post (21), and the interval is equipped with several and laps mouth (22) on the body of rod of gag lever post (21), and upper plate (18) outer terminal surface evenly distributed has several stopper (23) with several pivot (26) one-to-one, and gag lever post (21) rotate through pivot (26) to with the twice spacing protection of lap mouth (22) buckle on corresponding spacing hole (23) realization upper plate (18) and lower plate (29).

7. The transmission line windage yaw protection device of claim 4, wherein: the upper surface of the upper clamping plate (18) and the lower surface of the lower clamping plate (29), and the upper surface of the upper weight plate (30) and the lower surface of the lower weight plate (36) are convex cambered surfaces.

8. The transmission line windage yaw protection device of claim 1, wherein: the dabber (3) clearance runs through counter weight board (30), and dabber (3) lower extreme and lower counter weight board (36) fixed connection, and lower counter weight board (36) upper portion face evenly distributed has several lower draw-in groove (35) that are used for the card to put balancing weight (31), goes up counter weight board (30) lower part face and is equipped with several and lower draw-in groove (35) one-to-one last draw-in groove (32), goes up counter weight board (30) and lower counter weight board (36) and carries out fixed connection through mounting screw (33).

9. The transmission line windage yaw protection device of claim 1, wherein: be equipped with between adjacent dabber (3) and be used for unloading the protection machanism of power buffering to dabber (3) that sways, protection machanism includes telescopic link (37) and spring (39), and the interior pole tip and the outer pole tip of telescopic link (37) are articulated with adjacent dabber (3) respectively and are connected, all are equipped with baffle (38) on the interior pole body of rod and the outer pole body of telescopic link (37), are equipped with between two baffles (38) and overlap and establish spring (39) outside telescopic link (37).

10. The transmission line windage yaw protection device of claim 9, wherein: a protection mechanism is also arranged between the core shaft (3) adjacent to the cable frame and the cable frame.

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