CN206818948U - That ADSS optical cables are installed on a kind of steel tower unloads power apparatus - Google Patents

Abstract

The utility model discloses a force unloading device for installing an ADSS optical cable on an iron tower, which aims to solve the problem that when the ADSS optical cable is installed on the iron tower, the horizontal pulling force on the iron tower is relatively large, which affects the stability of the iron tower. The utility model comprises a connecting rod, two adjusting rods respectively connected to the two ends of the connecting rod with adjustable length, and a pulling ring connected to the adjusting rod. Hang on the support ring, the pull ring is connected with pre-twisted wires, the pre-twisted wires are connected to the ADSS optical cable, and the two pre-twisted wires are used to tighten the connecting rod. The ADSS optical cable is installed on the iron tower through the unloading device, which greatly reduces the horizontal tension on the iron tower, reduces the impact on the stability of the iron tower, and is beneficial to prolong the service life of the iron tower.

Description

A force unloading device for installing ADSS optical cables on iron towers

technical field

The utility model relates to an auxiliary device for installing an ADSS optical cable, in particular to a force unloading device for installing an ADSS optical cable on an iron tower.

Background technique

At present, the ADSS optical cable is erected along with the electric power tower, and the optical cable is fixed to each level of iron tower through fittings. The iron towers at both ends and the middle corner tower use tension-resistant fittings to hold the ADSS optical cable to withstand the running tension of the optical cable. The straight line tower in the middle is suspended by hanging fittings Hang the ADSS optical cable without bearing the running tension of the optical cable. For the iron tower, the smaller the horizontal tension of the ADSS optical cable is, the better. Excessive tension will affect the stability of the iron tower. Now we can only rely on adjusting the tightness of the optical cable to reduce the tension on the iron tower by increasing the sag. . However, the ADSS optical cable operation specification has strict requirements on the sag of the optical cable. Excessive sag will easily cause many problems, such as: the reduction of the downward safety distance, the increase of the wind deflection of the optical cable, and the aggravation of the wear of the optical cable. Therefore, so far, there is no effective method at home and abroad to reduce the pulling force of the ADSS optical cable on the iron tower.

Utility model content

The utility model overcomes the problem that when the ADSS optical cable is installed on the iron tower, the horizontal pulling force on the iron tower is relatively large, which affects the stability of the iron tower, and provides a force unloading device for installing the ADSS optical cable on the iron tower. The ADSS optical cable is installed through the unloading device In the iron tower, the horizontal tension on the iron tower is greatly reduced, reducing the impact on the stability of the iron tower.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical solutions: a force unloading device for installing an ADSS optical cable on an iron tower, including a connecting rod, two adjusting rods connected to the two ends of the connecting rod with adjustable lengths, connected to the adjusting rod The two pull rings are connected to the support ring for installation on the iron tower, the pull ring movable hook is hung on the support ring, and the pull ring is connected with pre-twisted wires, which are connected to ADSS optical cables. Tighten the connecting rod with wire.

When the ADSS optical cable is installed on the iron tower, first install the support ring on the iron tower, fasten the pre-twisted wire connection to the ADSS optical cable, then connect the end of the pre-twisted wire to the pulling ring, adjust the length of the adjustment rod, and make the connection Rods, adjusting rods, and pre-twisted wires are in a tensioned state, and at the same time ensure that the sag of the ADSS optical cable meets the requirements. According to the force analysis, it can be known that the horizontal tension of the pre-twisted wire on the support ring is f=2sin (0.5a)*F, a is the angle between the pre-twisted wire and the extension line of the connecting rod, F is the tension of the pre-twisted wire, that is, the operation of the ADSS optical cable tension. It can be seen from the above formula that when the angle between the pre-twisted wire and the extension line of the connecting rod is 0 degrees, the horizontal tension f of the pre-twisted wire on the support ring is 0, and the force is completely unloaded. At this time, the tower only bears the vertical force from the ADSS optical cable. Gravity in the direction; when the angle between the pre-twisted wire and the extension line of the connecting rod is less than 60 degrees, f<F, it has the effect of unloading force. At this time, the iron tower bears the gravity from the vertical direction of the ADSS optical cable and the smaller pulling force in the horizontal direction; When the angle between the pre-twisted wire and the extension line of the connecting rod is greater than 60 degrees, f>F does not have the effect of unloading force. At this time, the iron tower bears the gravity in the vertical direction and the large pulling force in the horizontal direction from the ADSS optical cable. Therefore, when installing the ADSS optical cable, ensure that the angle a between the pre-twisted wire and the extension line of the connecting rod is less than 60 degrees. The static end of ADSS optical cable can be made by using tension-resistant fittings on the straight iron tower, which is conducive to reducing the difficulty of ADSS optical cable design and construction, and improving the efficiency of ADSS optical cable engineering. The vertical gravitational force on the tower will not affect the stability of the tower. To sum up, the ADSS optical cable is installed on the iron tower through the unloading device, which greatly reduces the horizontal tension on the iron tower, reduces the impact on the stability of the iron tower, and is beneficial to prolong the service life of the iron tower.

As preferably, the adjusting rod includes a rod body, two connecting screws threadedly connected to the two ends of the rod body respectively, a connecting hook is provided at the end of the connecting screw rod, the connecting hook of one connecting screw rod is connected with the pull ring, and the connecting hook of the other connecting screw rod is connected with the connecting rod. There are connecting rings between them. The length of the entire adjustment rod can be adjusted by rotating the connecting screw, so that the sag of the ADSS optical cable can be easily adjusted to prevent the sag from being too large. The length of the adjusting rod is convenient to adjust, and the connection of the connecting screw rod is reliable.

Preferably, the rod body includes two straight rods arranged at intervals, and a connecting block connected to the ends of the straight rods, the connecting block is used to connect the two straight rods, and the two connecting screws are respectively connected to the two connecting blocks. The rod body of this structure has good tensile strength and long service life.

Preferably, the connecting ring has a U-shaped structure, and the connecting ring abuts against the opening end to connect the locking bolt, the locking bolt and the connecting hook are sleeved together, the end of the locking bolt is connected to the nut, and the outer side of the nut at the end of the locking bolt is There are radially arranged limit holes, and limit pins for limit nuts are connected in the limit holes. The limit pin limits the position of the nut to prevent the nut from falling off from the locking bolt, and the locking bolt is used to realize the connection between the connecting ring and the connecting hook, and the connection is reliable.

Preferably, the connecting rod has a linear structure, and both ends of the connecting rod are bent with drag hooks, and the drag hooks and the connecting ring are pulled together. The two ends of the connecting rod are bent to form pull hooks to facilitate the connection with the connecting ring.

Compared with the prior art, the beneficial effects of the utility model are: (1) ADSS optical cable is installed on the iron tower through the unloading device, which greatly reduces the horizontal tension on the iron tower and reduces the influence on the stability of the iron tower; (2 ) When the force unloading device is installed on the straight iron tower, the iron tower is not subject to the horizontal tension of the ADSS optical cable. At this time, the static end of the ADSS optical cable can be made of a tension metal fitting on the straight iron tower, which is beneficial to reduce the design and construction difficulty of the ADSS optical cable and improve the ADSS optical cable project. benefit.

Description of drawings

Fig. 1 is the structural representation of the use state of the utility model;

Fig. 2 is a structural representation of the utility model;

Fig. 3 is the explosion diagram of the connecting ring of the present utility model;

In the figure: 1. connecting rod, 2. adjusting rod, 3. pulling ring, 4. iron tower, 5. supporting ring, 6. pre-twisted wire, 7. ADSS optical cable, 8. rod body, 9. connecting screw, 10. connecting Hook, 11, connecting ring, 12, straight rod, 13, connecting block, 14, locking bolt, 15, nut, 16, limit hole, 17, limit pin, 18, drag hook.

detailed description

Below by specific embodiment, in conjunction with accompanying drawing, the technical scheme of the utility model is described further in detail:

Embodiment: A force unloading device for installing an ADSS optical cable on an iron tower (see accompanying drawings 1 to 3), comprising a connecting rod 1, two adjustable rods 2 respectively connected to both ends of the connecting rod, connected to the adjusting rod On the pull ring 3, the connecting rod is a single rod, and the two pull rings are connected to the support ring 5 installed on the iron tower 4, and the pull ring and the support ring are in a U-shaped structure. The movable hook of the pulling ring is hung on the supporting ring, and the pulling ring is connected with a pre-twisted wire 6 for tension, and the pre-twisted wire is connected with the ADSS optical cable 7, and the two pre-twisted wires are tightened for the connecting rod. The pull ring can be adjusted and moved along the extension line direction of the connecting rod. The adjusting rod includes a rod body 8, two connecting screw rods 9 that are threadedly connected to the two ends of the rod body respectively, the connecting screw rod ends are provided with connecting hooks 10, the connecting hook of one connecting screw rod is connected with the pulling ring, and the connecting hook of the other connecting screw rod is connected with the connecting rod. A connecting ring 11 is connected between them, and the connecting ring is in a U-shaped structure. The rod body includes two straight rods 12 arranged at intervals and a connecting block 13 connected to the ends of the straight rods. The connecting block is used to connect the two straight rods, and the two connecting screws are respectively connected to the two connecting blocks. The connecting ring is in a U-shaped structure, and the connecting ring is connected to the opening end to connect the locking bolt 14, the locking bolt and the connecting hook are sleeved together, the end of the locking bolt is connected to the nut 15, and the outer side of the nut at the end of the locking bolt is provided There are limiting holes 16 arranged radially, and the limiting pins 17 for limiting nuts are connected in the limiting holes, and the limiting pins are cotter pins. The connecting rod is in a straight line structure, and the two ends of the connecting rod are all bent with drag hooks 18, and the drag hooks are connected together with the connecting ring.

When the ADSS optical cable is installed on the iron tower, first install the support ring on the iron tower, fasten the pre-twisted wire connection to the ADSS optical cable, then connect the end of the pre-twisted wire to the pulling ring, adjust the length of the adjustment rod, and make the connection Rods, adjusting rods, and pre-twisted wires are in a tensioned state, and at the same time ensure that the sag of the ADSS optical cable meets the requirements. According to the force analysis, it can be known that the horizontal tension of the pre-twisted wire on the support ring is f=2sin (0.5a)*F, a is the angle between the pre-twisted wire and the extension line of the connecting rod, F is the tension of the pre-twisted wire, that is, the operation of the ADSS optical cable tension. It can be seen from the above formula that when the angle between the pre-twisted wire and the extension line of the connecting rod is 0 degrees, the horizontal tension f of the pre-twisted wire on the support ring is 0, and the force is completely unloaded. At this time, the tower only bears the vertical force from the ADSS optical cable. Gravity in the direction; when the angle between the pre-twisted wire and the extension line of the connecting rod is less than 60 degrees, f<F, it has the effect of unloading force. At this time, the iron tower bears the gravity from the vertical direction of the ADSS optical cable and the smaller pulling force in the horizontal direction; When the angle between the pre-twisted wire and the extension line of the connecting rod is greater than 60 degrees, f>F does not have the effect of unloading force. At this time, the iron tower bears the gravity in the vertical direction and the large pulling force in the horizontal direction from the ADSS optical cable. Therefore, when installing the ADSS optical cable, ensure that the angle a between the pre-twisted wire and the extension line of the connecting rod is less than 60 degrees. The static end of ADSS optical cable can be made by using tension-resistant fittings on the straight iron tower, which is conducive to reducing the difficulty of ADSS optical cable design and construction, and improving the efficiency of ADSS optical cable engineering. The vertical gravitational force on the tower will not affect the stability of the tower. To sum up, the ADSS optical cable is installed on the iron tower through the unloading device, which greatly reduces the horizontal tension on the iron tower, reduces the impact on the stability of the iron tower, and is beneficial to prolong the service life of the iron tower.

The above-described embodiment is only a preferred solution of the utility model, and does not limit the utility model in any form. There are other variations and improvements without exceeding the technical solution described in the claims. type.

Claims (5)

1. ADSS optical cables are installed on a kind of steel tower unloads power apparatus, it is characterized in that, including connecting rod, it is connected to connecting rod two Length-adjustable two adjusting rod, the pulling ring being connected on adjusting rod are held, two pulling rings are all connected with steel tower Support ring, pulling ring activity to be hooked in support ring, pull connection tension on ring to have preformed armor rods, preformed armor rods connects ADSS optical cables, Two preformed armor rodses tense connecting rod.

That 2. ADSS optical cables are installed on a kind of steel tower according to claim 1 unloads power apparatus, it is characterized in that, adjusting rod includes The body of rod, two connecting screws for being threaded in body of rod both ends respectively, connecting screw end are provided with connecting hook, the company of a connecting screw Hook is connect with pulling ring to be connected, connection ring is connected between the connecting hook and connecting rod of another connecting screw.

That 3. ADSS optical cables are installed on a kind of steel tower according to claim 2 unloads power apparatus, it is characterized in that, the body of rod includes two Spaced straight-bar, the contiguous block for being connected to straight-bar end, contiguous block are used to connect two straight-bars, and two connecting screws connect respectively On two contiguous blocks.

That 4. ADSS optical cables are installed on a kind of steel tower according to Claims 2 or 3 unloads power apparatus, it is characterized in that, connection ring Taken the shape of the letter U structure, and connection clamping screw in openend is abutted against in connection ring, and clamping screw connects together with connecting hook, clamping screw End coupling nut, clamping screw end cap outside are provided with the spacing hole being radially arranged, spacing spiral shell are connected in spacing hole The spacer pin of cap.

That 5. ADSS optical cables are installed on a kind of steel tower according to Claims 2 or 3 unloads power apparatus, it is characterized in that, connecting rod Linearly structure, connecting rod both ends are bent with drag hook, together with drag hook sockets with connection ring.