CN216251943U - A device for effectively suppressing the wind deflection of optical cables or ground wires - Google Patents

Abstract

The utility model discloses a device for effectively restraining the wind deflection of an optical cable or a ground wire, which comprises a fixing mechanism, a pulley mechanism and a steel wire rope, wherein the fixing mechanism comprises sub-conductor spacers respectively arranged on the wires on both sides of a tower, and two sub-conductor spacers. The wire spacers are connected by the interphase spacers; the pulley mechanism is installed on the traction rope or its connected optical cable/ground wire, one end of the traction rope is connected to the tractor, and the other end of the traction rope is connected to the optical cable/ground wire; the traction rope drives the optical cable/ground wire The wire is passed through the pulley mechanism; the pulley mechanism and the sub-conductor spacers on both sides below it are connected by wire ropes, forming a triangular structure in the vertical plane. The utility model can actively solve the state of excessive wind deflection when the optical cable or the ground wire is unfolded. Compared with the complete installation of the spanning frame sealing net and the force-bearing cable sealing net, the wind deflection reduction effect is remarkable and the cost is reduced.

Description

A device for effectively suppressing the wind deflection of optical cables or ground wires

technical field

The utility model relates to the technical field of electric power construction, in particular to a device for effectively restraining the wind deflection of an optical cable or a ground wire.

Background technique

During the construction of the optical cable reconstruction project, when compiling the crossover technical scheme and calculating according to the actual data on the site, there are many cases where the wind deviation of the optical cable exceeds the boundary of the sealing network (using wires to seal the network). For example, by changing the method of closing the net, by erecting a spanning frame to seal the net, although it can meet the requirements of the specification, it will increase the cost investment and construction risk.

At present, when the transmission line is deployed, the traditional way is to set up a spanning grid and seal the network, but in the technical transformation project, this construction method will lead to an increase in the construction cost, construction period and risk. The traditional way of crossing the important crossing is a "passive" protection concept, which is greatly affected by factors such as the wind deviation of the crossing object, the width of the object being crossed, and the crossing angle.

Utility model content

In order to solve the problems of the prior art, the utility model provides a device for effectively restraining the wind deflection of the optical cable or the ground wire.

In order to solve the above-mentioned technical problems, the technical scheme adopted by the present utility model is:

A device for effectively restraining the wind deflection of an optical cable or a ground wire, comprising a fixing mechanism, a pulley mechanism and a steel wire rope, wherein:

The fixing mechanism includes sub-conductor spacers respectively arranged on the wires on both sides of the tower, and the two sub-conductor spacers are connected by the interphase spacers;

The pulley mechanism is installed on the traction rope or its connected optical cable/ground wire, one end of the traction rope is connected to the tractor, and the other end of the traction rope is connected to the optical cable/ground wire; the traction rope drives the optical cable/ground wire to pass through the pulley mechanism;

The pulley mechanism and the sub-conductor spacers on both sides below it are connected by wire ropes to form a triangular structure in the vertical plane.

Further, the device for effectively restraining the wind deflection of the optical cable or the ground wire is arranged on one side or both sides above or above the object to be spanned.

Further, the pulley mechanism includes a horizontal support plate, and the left and right ends of the lower side of the horizontal support plate are respectively provided with vertical pulley groups, and each vertical pulley group is composed of two vertical pulleys arranged at intervals and in parallel; The two ends are respectively fixed with vertical plates extending downward, the vertical plates are located on the outer side of the vertical pulley group, and horizontal pulleys arranged at an upper and lower interval and parallel to each other are arranged between the two vertical plates. The middle interval passes through, and the upper horizontal pulley is set close to the horizontal support plate, and the lower horizontal pulley and the two vertical plates are connected by a quick release structure;

A pulley-enclosed channel is formed between the two vertical pulley sets and the two horizontal pulleys. The pulley-enclosed channel forms an inlet and outlet through the lower horizontal pulley and the quick-release structure. The traction rope or its connected optical cable/ground wire is surrounded by the inlet and outlet into the pulley. channel, and pass through the channel surrounded by pulleys;

A connecting ring is provided on the horizontal support plate and/or the vertical plate, and the connecting ring is used for connecting the steel wire rope.

Further, one end of the central shaft of the lower horizontal pulley is hingedly connected to one side vertical plate through a connecting seat, and the other end of the central shaft of the lower horizontal pulley is connected to the other side vertical plate through a connecting pin to form a quick release structure.

Further, the sub-conductor spacers are split-type spacers, and the split-type spacers are provided with through holes corresponding to the sub-conductors, and at the same time, the frame body of the split-type spacers is distributed with hanging rings, and the hanging rings are used to connect the wire ropes. .

The beneficial effects of the present utility model:

(1) Actively solve the state of excessive wind deflection when the optical cable or ground wire is deployed. Compared with the complete installation of the spanning frame sealing net and the load-bearing cable sealing net, the effect of reducing wind deflection is remarkable and the cost is reduced.

(2) The device through which the optical cable or ground wire passes adopts a pulley mechanism with all-round built-in pulleys to reduce wear and tear, and at the same time does not affect the deployment of the optical cable ground wire.

Description of drawings

Fig. 1 is the system schematic diagram of this embodiment;

Fig. 2 is the front view of the pulley mechanism in this embodiment;

3 is a side view of the pulley mechanism in this embodiment;

4 is a schematic perspective view of a split spacer in this embodiment;

Fig. 5 is the schematic diagram before application of this embodiment;

FIG. 6 is a schematic diagram after application of this embodiment.

The accompanying drawings are for illustrative purposes only, and should not be construed as limitations on this patent; in order to better illustrate the present embodiment, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art It is understandable to the artisan that certain well-known structures and their descriptions may be omitted from the drawings.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

As shown in FIG. 1 to FIG. 4 , this embodiment provides a device for effectively restraining the wind deflection of an optical cable or a ground wire, including a fixing mechanism, a pulley mechanism 2 and a wire rope 3 . in:

The fixing mechanism includes sub-conductor spacers 11 respectively arranged on the conductors on both sides of the tower, and the two sub-conductor spacers 11 are connected by interphase spacers 12;

The pulley mechanism 2 is installed on the traction rope or its connected optical cable/ground wire, one end of the traction rope is connected to the tractor, and the other end of the traction rope is connected to the optical cable/ground wire; the traction rope drives the optical cable/ground wire to pass through the pulley mechanism 2;

The pulley mechanism 2 is connected with the sub-conductor spacers 11 on both sides below it through the wire rope 3 to form a triangular structure in the vertical plane.

In the present embodiment, the pulley mechanism 2 includes a horizontal support plate 21, and vertical pulley groups are respectively provided at the left and right ends of the lower side of the horizontal support plate 21. The two ends of the horizontal support plate 21 are also respectively fixed with a vertical plate 23 extending downward, the vertical plate 23 is located on the outside of the vertical pulley group, and the two vertical plates 23 are provided with upper and lower spaced and parallel horizontal pulleys 24, two Two horizontal pulleys 24 pass through the middle of each vertical pulley group, and the upper horizontal pulley is arranged close to the horizontal support plate 21, and the lower horizontal pulley is connected with the two vertical plates 23 by a quick release structure.

Specifically, one end of the central shaft of the lower horizontal pulley is hingedly connected to one side vertical plate through a connecting seat, and the other end of the central shaft of the lower horizontal pulley is connected to the other side vertical plate through a connecting pin to form a quick release structure.

Pulley mechanism 2 Through the above design, a pulley-enclosed channel is formed between the two vertical pulley groups and the two horizontal pulleys. The pulley-enclosed channel forms an inlet and outlet through the lower horizontal pulley and the quick-release structure, and the traction rope or its connected optical cable/ground The wire enters the pulley-enclosed channel from the inlet and outlet, and passes through the pulley-enclosed channel;

A connecting ring 25 is provided on the horizontal support plate 21 and the vertical plate 23, and the connecting ring 25 is used for connecting the wire rope.

From the above, the device through which the optical cable or the ground wire passes adopts a pulley mechanism 2 embedded with pulleys in all directions, so as to reduce its wear and tear, and at the same time, it does not affect the unfolding work of the optical cable ground wire.

The function of the sub-conductor spacer bar 11 is to fix the pulley mechanism 2 on the adjacent lower two-phase conductor through the wire rope. , which is convenient for the wire rope to be inserted and fixed.

In this embodiment, the sub-conductor spacer bar 11 is a four-split spacer bar, and the split-type spacer bar is provided with through holes 14 corresponding to the sub-conductors. For connecting wire ropes.

In actual construction, the steel wire rope is checked and calculated by force, and the selection of the length should meet the following principles: the vertex of the triangle formed on the vertical plane satisfies the sag point of the optical cable at the binding point of the system under the tension state of the optical cable. Reserve 0.3m-0.5m of redundancy to meet the uneven tension of the optical cable.

In this embodiment, the device for effectively restraining the wind deflection of the optical cable or the ground wire is arranged on one or both sides of the upper or upper side adjacent to the object to be spanned, so as to achieve the effect of restraining the wind deflection.

The application and effect of the utility model are described in detail below by taking the 500kV Huaxiang II line 019#-020# crossing the S325 national road as an example.

As shown in Figure 5, the 500kV Huaxiang II line 019#-020# crosses the S325 national road. The construction task is to replace the right phase ground wire with an optical cable, and the spanning section is 019#-020#, and the length of the tensile section is 019#-020#. 2949m, the crossing method of "resistance-straightness-straightness-resistance" is adopted, the span of 019#-020# is 453m, and the intersection angle of 500kV Huaxiang II line and S325 national road is 70°. The S325 national road has a surface width of 12m and a two-way 2-lane of 12m (including emergency lanes).

According to the calculation formula of wind deflection

Z=W ₄₍₁₀₎ ×[x(1-x)/2H+λ/W1]

in:

The distance between the x-cross point and the nearest tower of the calculation line (m), according to the large side and small side of S325, is 68m and 373m respectively.

H-line guide, ground wire (traction rope) tension (N), the optical cable of this scheme is 10000N:

1- Calculate the line span (m), take 453m;

λ - Calculated line conductors and optical cables are suspended (m), and the optical cable in this scheme is 0.3m;

W1- Calculate the weight per unit length of the line optical cable (N/m), the optical cable in this scheme takes W1=8.53N/m:

d- Calculate the diameter of the line optical cable (mm), the optical cable of this scheme is taken as d=16.6mm:

K-wind carrier type coefficient; when d≤17mm, K=1.2; when d>17mm, K=1.1;

W4(10) - The wind load per unit length of the ground wire at the maximum wind speed.

Install the system at a suitable position on the left side of the road, as shown by line A in Figure 6. That is, the system is set up 68 meters on the left side of the road.

The comparison of wind deflection before and after using this system is shown in the following table:

As can be seen from the above table, the wind deflection can be significantly reduced after the installation of this system, which has a significant effect on the reduction of construction costs and construction risks.

The above embodiments are only used to illustrate rather than limit the technical solutions of the present utility model. Although the present utility model has been described in detail with reference to the above-mentioned embodiments, those of ordinary skill in the art should understand that the present utility model can still be modified or equivalently replaced. Any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

If words such as "first" and "second" are used herein to define components, those skilled in the art should know that the use of "first" and "second" is only for the convenience of describing the present invention and simplifying Description, unless otherwise stated, the above words have no special meaning.

In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and the like indicate the orientation or position The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated for a specific orientation Therefore, it cannot be construed as a limitation on the protection content of the present invention.

Claims (5)

1. The utility model provides an effectively restrain optical cable or ground wire exhibition and put windage yaw's device which characterized in that: including fixed establishment, pulley mechanism and wire rope, wherein:

the fixing mechanism comprises sub-conductor spacers which are respectively arranged on the two side conductors of the tower, and the two sub-conductor spacers are connected through an interphase spacer;

the pulley mechanism is arranged on a traction rope or an optical cable/ground wire connected with the traction rope, one end of the traction rope is connected with a traction machine, and the other end of the traction rope is connected with the optical cable/ground wire; the traction rope drives the optical cable/ground wire to pass through the pulley mechanism;

the pulley mechanism is connected with the sub-conductor spacing rods on two sides below the pulley mechanism through a steel wire rope, and a triangular structure is formed on a vertical plane.

2. The device for effectively suppressing windage yaw in a fiber optic or ground extension of claim 1, wherein: the device for effectively inhibiting the wind deflection of the spread of the optical cable or the ground wire is arranged on one side or two sides above or above the object to be spanned.

3. An arrangement for effectively suppressing windage yaw in an optical or earth cable arrangement as claimed in claim 1 or 2, wherein: the pulley mechanism comprises a horizontal supporting plate, the left end and the right end of the lower side of the horizontal supporting plate are respectively provided with a vertical pulley block, and each vertical pulley block consists of two vertical pulleys which are arranged at intervals in the front-back direction and are parallel; vertical plates extending downwards are respectively fixed at two ends of the horizontal supporting plate, the vertical plates are positioned on the outer sides of the vertical pulley blocks, parallel horizontal pulleys are arranged between the two vertical plates at intervals up and down, the two horizontal pulleys pass through the middle of each vertical pulley block at intervals, the upper horizontal pulley is arranged close to the horizontal supporting plate, and the lower horizontal pulley is connected with the two vertical plates through a quick-release structure;

a pulley surrounding type channel is formed between the two vertical pulley blocks and the two horizontal pulleys, an inlet and an outlet are formed in the pulley surrounding type channel through the lower horizontal pulley and the quick-release structure, and a traction rope or an optical cable/ground wire connected with the traction rope enters the pulley surrounding type channel through the inlet and the outlet and passes through the pulley surrounding type channel;

and the horizontal supporting plate and/or the vertical plate are/is provided with a connecting ring, and the connecting ring is used for connecting the steel wire rope.

4. The device for effectively suppressing windage yaw in a fiber optic or ground extension of claim 3, wherein: one end of a central shaft of the lower horizontal pulley is hinged with the vertical plate on one side through the connecting seat, and the other end of the central shaft of the lower horizontal pulley is connected with the vertical plate on the other side in a splicing manner through the connecting pin to form a quick-release structure.

5. An arrangement for effectively suppressing windage yaw in an optical or earth cable arrangement as claimed in claim 1 or 2, wherein: the sub-conductor spacer is a split spacer, through holes corresponding to the sub-conductors are formed in the split spacer, and meanwhile hanging rings are distributed on a frame body of the split spacer and used for being connected with a steel wire rope.

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