CN218603153U - Wind deviation preventing device for power transmission line - Google Patents

Abstract

The utility model relates to the field of power transmission, in particular to a wind deflection prevention device for a power transmission line, which comprises three groups of wind deflection prevention units and a suspension clamp, wherein the suspension clamp is used for clamping the power transmission line, three connecting pieces are evenly arranged on the outer side wall of the suspension clamp along the circumferential direction, and the three groups of wind deflection prevention units are connected with the connecting pieces and the body part of a tower; the wind deflection prevention unit comprises a fixed rod and a movable rod, the fixed rod is fixedly arranged on the body part of the tower, two ends of the movable rod are movably arranged on the fixed rod and a corresponding connecting piece respectively, and the movable rod is perpendicular to the connecting piece. The utility model aims to solve the technical problem of how to prevent transmission line windage yaw.

Description

Wind deflection preventing device for power transmission line

Technical Field

The utility model relates to a transmission of electricity field specifically discloses transmission line windage yaw preventing device.

Background

In a strong wind area, the transmission line may shift towards the tower body under the action of wind power, and at the moment, the discharge gap of the transmission line becomes small, so that the transmission line discharges to members of the tower body, and obvious black scorching-shaped point placing marks appear on the transmission line and peripheral hardware fittings, which seriously threatens the safety of a power grid.

The traction device is mostly arranged in the prior art, the power transmission line is fixed in a tensioning mode, the wind direction is changeable, if the power transmission line swings towards the tensioning direction, the power transmission line is still close to the tower body part at the position, the flashover phenomenon occurs, and therefore the device capable of fixing the power transmission line from all directions is needed.

SUMMERY OF THE UTILITY MODEL

In view of this, the utility model aims at providing a transmission line windage yaw preventing device to solve the technical problem who how to prevent transmission line windage yaw.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a wind deviation prevention device for a power transmission line comprises three groups of wind deviation prevention units and a suspension clamp, wherein the suspension clamp is used for clamping the power transmission line, three connecting pieces are uniformly arranged on the outer side wall of the suspension clamp along the circumferential direction, and the three groups of wind deviation prevention units are connected with the connecting pieces and a tower body; the wind deflection prevention unit comprises a fixed rod and a movable rod, the fixed rod is fixedly arranged on the body part of the tower, two ends of the movable rod are respectively arranged on the fixed rod and a corresponding connecting piece, and the movable rod is perpendicular to the connecting piece. In this scheme, come the centre gripping power transmission line through the suspension clamp, then through three groups prevent wind partial unit yu plumb line clamp connection and fix the power transmission line, prevent wind partial unit evenly distributed because three groups, so whole power transmission line is very even from the atress of three direction, no matter how wind direction, have at least two to prevent that wind partial unit can prevent the power transmission line skew, prevent that wind partial effect is better. Simultaneously, the movable rod is perpendicular with the connecting piece in this scheme, and effort perpendicular to power transmission line, fixed effect is better.

Optionally, the movable rod includes outer rod portions at two ends and a middle rod portion in the middle, a first damping spring is sleeved on the middle rod portion, guide rings are arranged on two sides of the first damping spring, and the guide rings abut against the outer rod portions. This scheme of adoption, the movable rod can stretch out and draw back at the certain limit, and just first damping spring can play the damping power consumption effect, reduces the windage yaw degree of power transmission line.

Optionally, the movable rod further comprises a sleeve rod portion, the inner portion of the sleeve rod portion is hollow, a guide block is arranged on the inner wall of the sleeve rod portion along the length direction, and a guide groove matched with the guide block is formed in the outer wall of the guide ring. This scheme of adoption, loop bar portion can play the restriction effect to outer rod portion and well pole portion, avoids both to take place the skew in radial.

Optionally, a shock absorber is arranged on the outer wall of the connecting piece, the shock absorber comprises a telescopic rod, a second shock absorbing spring and a shock absorbing pad, one end, far away from the connecting piece, of the telescopic rod is connected with a mounting plate, the shock absorbing pad is arranged between the mounting plate and the connecting piece, a shock absorbing hole for the telescopic rod to penetrate through is formed in the shock absorbing pad, one end, close to the connecting piece, of the telescopic rod is fixed in the shock absorbing hole of the shock absorbing pad, and the mounting plate is movably connected with the movable rod. This scheme of adoption, second damping spring can play the damping effect, avoids the power transmission line to wave by a wide margin, and the damping pad also has certain damping fixed action simultaneously, and can follow the length of power transmission line and two radial directions, and damping power consumption effect is better.

Optionally, the damping pad is made of rubber, the first damping spring is in a compressed state for a long time, and the stiffness coefficient of the second damping spring is smaller than that of the first damping spring. In the scheme, the second damping spring is small in length and low in stiffness coefficient, so that the second damping spring is high in deformation frequency but small in deformation amount, a preliminary energy consumption and vibration reduction effect can be well achieved, and the problem of small waving amplitude windage yaw can be solved. And first damping spring power consumption damping effect is better, can control windage yaw range better, makes the power transmission line can not too be too much near the shaft tower.

The working principle and the beneficial effects of the scheme are that:

set up suspension clamp and three groups in this scheme and prevent wind partially the unit, three prevent wind partially the unit and support tight suspension clamp perpendicularly, and be 120 degrees contained angles between the three. Each group of windage yaw preventing units are provided with a first damping spring and a second damping spring, the first damping spring and the second damping spring can play an energy dissipation and vibration reduction role in the length direction of the windage yaw preventing units, the windage yaw preventing units further comprise vibration reduction pads, and the vibration reduction pads are made of rubber, so that the vibration reduction pads have multiple deformation directions and can play an energy dissipation and vibration reduction role in multiple directions. Prevent wind partial unit in this scheme and be in the state that supports tight suspension clamp for a long time, so it also has certain compression effect to the damping pad, avoids the damping pad because tensile excessive and lead to damaging, has improved the life of damping pad.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and/or combinations particularly pointed out in the appended claims.

Drawings

FIG. 1 is a schematic structural diagram of an embodiment;

FIG. 2 is a schematic view of a portion of the structure of the movable bar, mounting plate and connector;

FIG. 3 is an exploded view of the movable bar;

fig. 4 is a schematic view of the structure inside the vibration damping pad.

The drawings are numbered as follows: the device comprises a power transmission line 1, a suspension clamp 2, a fixed rod 3, a movable rod 4, a connecting piece 5, a vibration damping pad 6, a limiting rod 7, an installation plate 8, an outer rod part 9, a middle rod part 10, a sleeve rod part 11, a first vibration damping spring 12, a guide ring 13, a guide groove 14, a groove 15, a guide block 16, a telescopic rod 17 and a second vibration damping spring 18.

Detailed Description

The following is further detailed by way of specific embodiments:

examples

A windage yaw preventing device for a power transmission line 1 is shown in figures 1-4, wherein figure 1 does not show the specific structure of a movable rod 4 and comprises three groups of windage yaw preventing units and suspension clamps 2.

The suspension clamp 2 is used for clamping the transmission line 1, three connecting pieces 5 are uniformly and fixedly arranged on the outer side wall of the suspension clamp 2 along the circumferential direction, and an included angle between the three connecting pieces 5 is 120 degrees. The outer wall of the connecting piece 5 is provided with a vibration damper, and the vibration damper comprises a telescopic rod 17, a second vibration damping spring 18 and a vibration damping pad 6. The damping pad 6 is made of rubber and has certain elasticity, and the damping pad 6 is provided with a damping hole which is of a blind hole structure, wherein one end of the damping hole penetrates through the other end of the damping hole and the other end of the damping hole does not penetrate through the damping hole. One end of the telescopic rod 17 extends into the vibration reduction hole and is fixedly connected with the vibration reduction hole, the mounting plate 8 is fixedly arranged at the other end of the telescopic rod 17, the second vibration reduction spring 18 is sleeved on the telescopic rod 17, two ends of the second vibration reduction spring are fixedly connected with the vibration reduction hole and the mounting plate 8 respectively, and the mounting plate 8 is fixedly connected with the outer side end of the vibration reduction pad 6. The connecting piece 5 is fixedly provided with a limiting rod 7, the end part of the limiting rod 7 can be flush with the mounting plate 8, the mounting plate 8 can be abutted against the limiting rod 7 after being moved, and the limiting rod 7 is distributed on four sides of the mounting plate 8.

The three groups of wind deflection prevention units are connected with the connecting piece 5 and the tower body part. Prevent wind partial unit and include dead lever 3 and movable rod 4, dead lever 3 is fixed to be set up in shaft tower body portion, and the both ends of movable rod 4 set up respectively on dead lever 3 and corresponding connecting piece 5, and movable rod 4 is perpendicular with connecting piece 5. The movable rod 4 is movably connected to the mounting plate 8 in a rotary hinge or a spherical hinge. The movable rod 4 comprises outer rod portions 9 at two ends and a middle rod portion 10 in the middle, the ends, opposite to the outer rod portions 9 and the middle rod portion 10, of the outer rod portions 9 are hollow, the middle rod portion 10 is arranged in the two outer rod portions 9 in a sliding mode, a first damping spring 12 is sleeved on the middle rod portion 10, guide rings 13 are fixedly arranged at two ends of the first damping spring 12, and the guide rings 13 are abutted to the outer rod portions 9. The movable rod 4 further comprises a sleeve rod part 11, the inner part of the sleeve rod part 11 is hollow, the sleeve rod part 11 is sleeved on the outer rod part 9 and the middle rod part 10, a guide block 16 is arranged on the inner wall of the sleeve rod part 11 along the length direction, a guide groove 14 matched with the guide block 16 is formed in the outer wall of the guide ring 13, and a groove 15 communicated with the guide groove 14 is formed in the outer rod part 9. The first damper spring 12 is in a compressed state for a long period of time, and the stiffness coefficient of the second damper spring 18 is smaller than that of the first damper spring 12.

In the specific implementation:

when the strong wind condition appears, the wind force can blow the transmission line 1 to swing, the transmission line 1 can reduce the swing amplitude under the fixation of the suspension clamp 2, meanwhile, the transmission line 1 can drive the connecting piece 5 to move towards or away from the mounting plate 8 when swinging, the vibration damping pad 6 can deform at the moment, and the second vibration damping spring 18 can also deform to absorb vibration energy, so that the swing amplitude of the transmission line 1 is reduced. Because the fixed rod 3 and the movable rod 4 of the whole wind deflection prevention unit tightly abut against the damping pad 6, the situation that the damping pad 6 is pulled is less, and the damage rate of the damping pad 6 can be reduced; meanwhile, the three wind deflection prevention units are arranged and uniformly surround the power transmission line 1 respectively, so that the power transmission line 1 can be fixed more stably. The movable rod 4 is provided with a first damping spring 12, the first damping spring 12 has a large stiffness coefficient and relatively small deformation, but can absorb a large amount of vibration energy, has the best damping and energy consumption performance, and can control the swing amplitude of the power transmission line 1 to the maximum extent.

The above description is only an example of the present invention, and the common general knowledge of the known specific structures and characteristics of the schemes is not described herein. It should be pointed out that to those skilled in the art, without departing from the structure of the present invention, a plurality of modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the utility of the present invention.

Claims (5)

1. The utility model provides a transmission line windage yaw preventing device which characterized in that: the three groups of windage yaw prevention units are connected with the connecting pieces and the tower body; the wind deflection prevention unit comprises a fixed rod and a movable rod, the fixed rod is fixedly arranged on the body part of the tower, two ends of the movable rod are respectively arranged on the fixed rod and a corresponding connecting piece, and the movable rod is perpendicular to the connecting piece.

2. A transmission line windage yaw prevention apparatus as claimed in claim 1, wherein: the movable rod comprises outer rod parts at two ends and a middle rod part in the middle, a first damping spring is sleeved on the middle rod part, guide rings are arranged on two sides of the first damping spring, and the guide rings are abutted to the outer rod parts.

3. A transmission line windage protector according to claim 2, characterised in that: the movable rod further comprises a sleeve rod portion, the inner portion of the sleeve rod portion is hollow, a guide block is arranged on the inner wall of the sleeve rod portion along the length direction, and a guide groove matched with the guide block is formed in the outer wall of the guide ring.

4. A transmission line windage yaw prevention apparatus as claimed in claim 3, wherein: the shock absorber is arranged on the outer wall of the connecting piece and comprises a telescopic rod, a second shock absorbing spring and a shock absorbing pad, wherein the end, far away from the connecting piece, of the telescopic rod is connected with a mounting plate, the shock absorbing pad is arranged between the mounting plate and the connecting piece, a shock absorbing hole for the telescopic rod to penetrate through is formed in the shock absorbing pad, one end, close to the connecting piece, of the telescopic rod is fixed in the shock absorbing hole of the shock absorbing pad, and the mounting plate is movably connected with the movable rod.

5. A transmission line windage yaw prevention apparatus as claimed in claim 4, wherein: the damping pad is made of rubber, the first damping spring is in a compression state for a long time, and the stiffness coefficient of the second damping spring is smaller than that of the first damping spring.

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