CN206878417U - Ground wire connecting tool secondary protector - Google Patents

Abstract

The utility model discloses a secondary protection device for connecting metal fittings with a ground wire, which comprises a steel plate, a right-angle steel plate I and a right-angle steel plate II, and the three are connected to each other through the relationship of bolt connection, and are connected as a whole, and are hung on the electric tower. Finally, connect the U-shaped hanging ring bolts to the device, and then connect the connecting fittings through the U-shaped hanging ring to realize the secondary protection for the connecting fittings of the ground wire. The utility model has the advantage that it can be widely used, and it is suitable for secondary connection and reinforcement of 35KV and above distribution and main network power lines to prevent the ground wire from falling off. The second protection against falling off is carried out, and the production is simple, the installation is convenient, and the integration of economics and science can fundamentally eliminate the potential safety hazards in the "three-span" process.

Description

Secondary protection device for ground wire connection fittings

technical field

The utility model relates to the field of protection of metal fittings connected with ground wires in power transmission lines, in particular to a secondary protection device for connecting metal fittings connected with ground wires, which is suitable for 35KV and above distribution and main network power lines, electrical parts and lightning protection parts above pole towers Fixed connection of the ground conductor.

Background technique

In 35KV and above distribution and main network power lines, the electrical part above the tower and the lightning protection part are fixedly connected to the ground wire. The general sequence is connecting fittings-insulators-connecting fittings-conductors; One-to-one connections. When the line crosses high-risk facilities such as high-speed rail, according to the overall deployment of the State Grid Corporation of China, the insulators of two adjacent base towers must be connected in double series, but this measure only increases the tensile load on the insulation part, while the original one-to-one connection The anti-load strength has not changed--the multiple line operation safety accidents of the State Grid Corporation have shown that due to various external force factors naturally induced, after a certain period of fatigue operation, the internal structure of some fittings will have varying degrees of strength degradation. Change. If it is replaced in time, the safety accident of the ground wire falling off can be avoided, otherwise, it will lead to uncontrollable, large-scale and serious safety liability accidents such as the disintegration of the power grid, the outage of the high-speed rail, and the high-speed blockage. Therefore, there is a need for a secondary protection device for connecting metal fittings with ground wires, which can effectively protect the connecting metal fittings.

Contents of the invention

In order to solve the problem of the degeneration of the connecting fittings on the electrical and lightning conductor grounding wires, the utility model provides a secondary protection device for connecting the fittings on the grounding wires.

The utility model is achieved through the following technical solutions.

A secondary protection device for connecting metal fittings with ground wires, comprising a steel plate, the two ends of the steel plate are respectively installed with a right-angle steel plate I, that is, the horizontal part of the right-angle steel plate I is connected to the steel plate through a bolt I; the end of the steel plate and the right-angle steel plate The horizontal parts of I are reserved with corresponding U-shaped hanging ring bolt holes, and the U-shaped hanging rings are connected by bolts; the vertical part of the right-angle steel plate I is fixedly connected with the vertical part of the right-angle steel plate II through bolts I, and the two The two right-angle steel plates II are opposite to each other, and bolts II are installed between the horizontal part of the right-angle steel plate II and the steel plate (1).

According to national standards, random drilling is not allowed on the tower pole or when drilling is inconvenient, if you want to add a secondary protection device to the insulator and lightning conductor, you have invented a secondary protection device for connecting the ground wire to the metal fitting. The cross arm on the electric tower is used to connect the device through various bolts, and hang it on the cross arm, that is, the cross arm passes through the secondary protection device, and then connects with the connecting hardware through a U-shaped hanging ring. Cross arms are generally divided into steel plate cross arms and angle steel cross arms. According to the different types of cross arms, the secondary protection devices are also different. The structure of the secondary protection device for the angle steel cross arm is as follows: including the steel plate at the bottom, which is placed under the cross arms at both ends of the tower, and the two ends of the steel plate are symmetrically connected with the horizontal part of the two right-angle steel plates I through bolts I. Make the vertical part of the right-angle steel plate Ⅰ lean against the cross arm, and the horizontal part of the right-angle steel plate Ⅰ has 2 bolt holes and a U-shaped hanging ring bolt hole, that is, the two bolts are connected by 2 bolts Ⅰ and U-shaped hanging ring bolt holes. One piece; the vertical part of the right-angle steel plate I is higher than the cross arm, and there are two bolt holes on it, and the vertical part is connected with the vertical part of the right-angle steel plate II through two bolts I, and the horizontal part of the right-angle steel plate II The horizontal part is longer than the width of the cross-arm, the horizontal part is located on the cross-arm, and the bolt holes are exposed outside the cross-arm, then the horizontal part of the right-angle steel plate II is connected to the steel plate through the bolt II, (note the distance between the horizontal part of the right-angle steel plate II and the steel plate The height of the cross-arm is basically the same as that of the angle steel); after the connection is completed, the steel plate, right-angle steel plate Ⅰ and right-angle steel plate Ⅱ are hung on the cross-arm, and then the U-shaped hanging ring is connected through the U-shaped hanging ring bolt hole, and the U-shaped hanging ring The secondary protection can be realized by connecting the connecting fittings, and then connecting the insulator or the lightning conductor.

Preferably, when the bolt II is connected to the steel plate, a steel sleeve is placed outside the bolt II to protect the bolt and increase the service life.

For the steel plate cross arm, and the distance between the cross arms is small, the secondary protection device for connecting the ground wire to the metal fittings: includes a steel plate, and the two ends of the steel plate are respectively installed with a right-angle steel plate I, that is, the horizontal part of the right-angle steel plate I passes through the bolt I It is fixedly connected with the steel plate; the end of the steel plate and the horizontal part of the right-angle steel plate I are reserved with corresponding U-shaped hanging ring bolt holes, and the U-shaped hanging ring is connected by bolts; the vertical part of the two right-angle steel plates I is installed U-shaped right-angle steel plate, that is, the two side plates of the U-shaped right-angle steel plate are fixedly connected to the vertical part of the right-angle steel plate I by bolts I respectively; bolts III are installed between the middle part of the bottom plate of the U-shaped right-angle steel plate and the steel plate.

When the distance between the steel plate cross-arms is small, the length of the steel plate at the bottom is relatively short, and it is placed under the cross-arms at both ends of the tower, and the two ends of the steel plate are symmetrically connected with the horizontal parts of the two right-angle steel plates I through bolts I. The horizontal part of the right-angle steel plate I has two bolt holes and a U-shaped hanging ring bolt hole, that is, the two bolts are connected as a whole through two bolts I and the U-shaped hanging ring bolt hole; the vertical part of the right-angle steel plate I is higher, and the height On the cross arm, there are 2 bolt holes on it, and its vertical part is connected to the two side plates of the U-shaped right-angle steel plate through 2 bolts I. The U-shaped right-angle steel plate is located on the cross arm, that is, the cross arm passes through the U-shaped The gap between the right-angle steel plate and the steel plate is basically the same as the thickness of the steel plate cross arm; since the distance between the U-shaped right-angle steel plate and the steel plate is relatively small, the U-shaped right-angle steel plate and the steel plate are respectively provided with 2 bolt holes, and the two are connected by bolt III.

Preferably, the bolt holes connecting the U-shaped right-angle steel plate and the bolt III on the steel plate are set as adjustable bolt holes, which is more convenient for installation.

Preferably, the steel plates in the above two solutions are galvanized steel plates to prevent corrosion and rust from being exposed to the air.

The utility model is suitable for secondary connection and reinforcement of 35KV and above distribution and main network power lines to prevent the ground wire from falling off. Moreover, it is simple to make, convenient to install, and integrates economics and science, which can fundamentally eliminate potential safety hazards in the "three-span" process.

Description of drawings

Fig. 1 shows the structural representation of the utility model.

Fig. 2 shows the front view of Embodiment 1 of the present utility model.

Fig. 3 shows the front view of Embodiment 2 of the present utility model.

Fig. 4 shows a schematic diagram of the structure of the U-shaped hanging ring.

In the figure: 1-steel plate, 2-right-angle steel plate Ⅰ, 3-right-angle steel plate Ⅱ, 4-bolt Ⅱ, 5-bolt Ⅰ, 6-bolt, 7-U-shaped hanging ring, 8-cross arm, 9-U-shaped right-angle Steel plate, 10-bolt III.

detailed description

The following will be described in conjunction with specific embodiments of the present invention.

Example 1

A secondary protection device for connecting metal fittings with ground wires, as shown in Figures 1 and 2, includes a steel plate 1, and right-angled steel plates I2 are respectively installed at both ends of the steel plate 1, that is, the horizontal part of the right-angled steel plate I2 is connected with the bolts I5 and The steel plate 1 is fixed; the end of the steel plate 1 and the horizontal part of the right-angle steel plate I2 are reserved with corresponding U-shaped hanging ring bolt holes, and the U-shaped hanging ring 7 is connected through the bolt 6; the vertical of the right-angle steel plate I2 The upper part is fixedly connected with the vertical part of the right-angle steel plate II3 through the bolt I5, and the two right-angle steel plates II3 are opposite to each other, and the bolt II4 is installed between the horizontal part of the right-angle steel plate II3 and the steel plate 1.

For the case where the distance between the cross-arms on the tower is relatively wide, the length of the steel plate 1 is set to be greater than the width of the cross-arm, and the two ends of the steel plate 1 are symmetrically provided with 2 bolt holes connecting the right-angle steel plate I2 and 1 U-shaped hanging ring bolt hole. The steel plate 1 and the horizontal parts of the two right-angle steel plates I2 are connected as a whole through two bolts I5, and then connected to the U-shaped hanging ring 7 through bolts 6; the vertical part of the right-angle steel plate I2 is higher and leans on the angle steel cross-arm , the vertical part is connected to the vertical part of the right-angle steel plate II3 by two bolts; since the distance between the cross-arms 8 is relatively wide, the vertical part of the two right-angle steel plates II3 is connected with the vertical part of the right-angle steel plate I2 by bolts, and the right-angle steel plate The horizontal part of Ⅱ3 has 2 bolt holes respectively, which are used to connect with the steel plate 1 through bolt Ⅱ4. Therefore, at the corresponding position of the bolt Ⅱ4, 2 bolt holes are arranged symmetrically on the steel plate 1 respectively, which are used to fix the right-angle steel plate Ⅱ3, so that The steel plate 1, the right-angle steel plate I2 and the right-angle steel plate II3 are hung on the cross arm 8 of the electric tower, that is, the cross arm 8 passes through the gap between the right-angle steel plate II3 and the steel plate 1, and finally the U-shaped hanging ring 7 is connected with the If the fittings are connected, the secondary protection of the fittings connected to the ground wire can be realized.

In this embodiment 1, the preferred solution is selected, and an outer casing is set on the outer side of the bolt II4 to protect the bolt II4.

In this embodiment 1, the preferred solution is selected, and the steel plate 1 is made of galvanized steel plate to prevent corrosion.

In this embodiment 1, the size of the steel plate 1 is 8 mm thick × 100 mm wide × 1335 mm long, and the size of the bolt holes on the steel plate 1, the right-angle steel plate I2 and the right-angle steel plate II3 is φ17.5 (17.5 mm in diameter); The size is 15mm thick × 100mm wide × 235mm high; the size of right-angle steel plate Ⅱ3 is 15mm thick × 100mm wide × 100mm high; the size of bolt Ⅱ4 is φ16×120 (16mm in diameter); the size of bolt Ⅰ5 is φ16×50 (diameter 16mm); the size of the steel casing is φ18×100 (18mm in diameter).

Example 2

A secondary protection device for connecting metal fittings with ground wires, as shown in Figure 3, includes a steel plate 1, and right-angle steel plates I2 are respectively installed at both ends of the steel plate 1, that is, the horizontal part of the right-angle steel plate I2 is fixed to the steel plate 1 through bolts I5. The end of the steel plate 1 and the horizontal part of the right-angle steel plate I2 are reserved with corresponding U-shaped hanging ring bolt holes, and the U-shaped hanging ring 7 is connected through the bolt 6; between the vertical parts of the two right-angle steel plates I2 Install the U-shaped right-angle steel plate 9, that is, the two side plates of the U-shaped right-angle steel plate 9 are fixedly connected to the vertical part of the right-angle steel plate I2 through bolts I5 respectively; bolts III10 are installed between the bottom plate middle part of the U-shaped right-angle steel plate 9 and the steel plate 1 .

This embodiment 2 is aimed at the situation that the distance between the steel plate cross-arms is short and the cross-arm is short, the length of the steel plate 1 is set to be greater than the width of the cross-arm, the length of the steel plate 1 at the bottom is shorter, and it is placed on the cross-arm at both ends of the tower. Below, both ends of the steel plate 1 are symmetrically connected to the horizontal part of the two right-angle steel plates I2 through bolts I5, and the horizontal part of the right-angle steel plate I2 has two bolt holes and a U-shaped hanging ring bolt hole, that is, the two pass through two bolts Ⅰ5. The U-shaped hanging ring bolt hole bolts are connected as a whole; the vertical part of the right-angle steel plate I2 is higher, higher than the cross arm, and there are 2 bolt holes on it, and the vertical part passes through 2 bolts Ⅰ and U-shaped right-angle steel plate 9 The two side plates are connected together, and the U-shaped right-angle steel plate is located on the cross arm, that is, the cross arm passes through the gap between the U-shaped right-angle steel plate 9 and the steel plate 1, and the gap between the two is basically the same as the thickness of the steel plate cross arm; Since the distance between the U-shaped right-angle steel plate 9 and the steel plate 1 is small, two bolt holes are respectively provided on the U-shaped right-angle steel plate 9 and the steel plate 1, and the two are connected by bolts III10. In this way, the steel plate 1, the right-angle steel plate I2 and the U-shaped right-angle steel plate 9 are suspended on the cross arm 8 of the electric tower, and finally the U-shaped hanging ring 7 is connected with the connecting fittings, so that the second connection of the connecting fittings for the ground wire can be realized. secondary protection.

In this embodiment 2, the preferred solution is selected, and the bolt holes of the bolt III10 on the steel plate 1 and the U-shaped right-angle steel plate 9 are set as adjustable bolt holes.

In this embodiment 2, the preferred solution is selected, and the steel plate 1 is made of galvanized steel plate to prevent corrosion.

The size of this embodiment 2 is that the size of the steel plate 1 is 8 mm thick × 100 mm wide × 900 mm long, and the size of the bolt holes on the steel plate 1, the right-angle steel plate I2 and the U-shaped right-angle steel plate 9 is φ17.5 (17.5 mm in diameter); The size of steel plate Ⅰ2 is 15mm thick×100mm wide×160mm high; the size of U-shaped right-angle steel plate 9 is 15mm thick×100mm wide×100mm high; its length is determined according to the width of the cross arm; the size of bolt Ⅲ10 is φ16×120 ( The diameter is 16mm); the size of the bolt I (5) is φ16×50 (the diameter is 16mm).

The protection scope of the utility model is not limited to the above specific embodiments. For those skilled in the art, the utility model can have multiple deformations and changes, and any modifications and improvements made within the concept and principles of the utility model and equivalent replacements should be included within the protection scope of the present utility model.

Claims (7)

1. A secondary protection device for ground wire connection fittings, characterized in that it includes a steel plate (1), and the two ends of the steel plate (1) are respectively installed with a right-angle steel plate I (2), that is, a right-angle steel plate I (2) The horizontal part of the steel plate (1) is fixedly connected with the steel plate (1) through the bolt I (5); the end of the steel plate (1) and the horizontal part of the right-angle steel plate I (2) are reserved with corresponding U-shaped hanging ring bolt holes, and through The bolt (6) connects the U-shaped hanging ring (7); the vertical part of the right-angle steel plate I (2) is fixedly connected with the vertical part of the right-angle steel plate II (3) through the bolt I (5), and the two right-angle steel plates II (3) The positions are opposite, and the bolt II (4) is installed between the horizontal part of the right-angle steel plate II (3) and the steel plate (1). 2. The secondary protection device for ground wire connection fittings according to claim 1, characterized in that: said bolt II (4) is covered with a steel sleeve. 3. The secondary protection device for ground wire connection fittings according to claim 2, characterized in that: the size of the steel plate (1) is 8 mm thick × 100 mm wide × 1335 mm long, and the steel plate (1), right-angled steel plate The size of the bolt holes on I (2) and the right-angle steel plate II (3) is φ17.5mm; the size of the right-angle steel plate I (2) is 15mm thick × 100mm wide × 235mm high; The size is 15mm thick×100mm wide×100mm high; the size of the bolt II (4) is φ16×120mm; the size of the bolt I (5) is φ16×50mm; the size of the steel casing is φ18×100mm . 4. A secondary protection device for ground wire connection fittings, characterized in that it includes a steel plate (1), and the two ends of the steel plate (1) are respectively installed with a right-angle steel plate I (2), that is, a right-angle steel plate I (2) The horizontal part of the steel plate (1) is fixedly connected with the steel plate (1) through the bolt I (5); the end of the steel plate (1) and the horizontal part of the right-angle steel plate I (2) are reserved with corresponding U-shaped hanging ring bolt holes, and are connected through the bolts (6) Connect the U-shaped hanging ring (7); install a U-shaped right-angled steel plate (9) between the vertical parts of the two right-angled steel plates I (2), that is, the two side plates of the U-shaped right-angled steel plate (9) are respectively passed through bolts I (5) is fixedly connected to the vertical part of the right-angle steel plate I (2); bolts III (10) are installed between the middle of the bottom plate of the U-shaped right-angle steel plate (9) and the steel plate (1). 5. The secondary protection device for ground wire connection fittings according to claim 4, characterized in that: the bolt holes for the connecting bolts III (10) on the U-shaped right-angle steel plate (9) are adjustable bolt holes. 6. The secondary protection device for ground wire connection fittings according to claim 5, characterized in that: the size of the steel plate (1) is 8 mm thick × 100 mm wide × 900 mm long, and the steel plate (1), right-angled steel plate The size of the bolt holes on I (2) and the U-shaped right-angle steel plate (9) is φ17.5mm; the size of the right-angle steel plate I (2) is 15mm thick × 100mm wide × 160mm high; ) is 15 mm thick x 100 mm wide x 100 mm high; the bolt III (10) is φ16 x 120 mm in size; the bolt I (5) is φ16 x 50 mm in size. 7. The secondary protection device for connecting metal fittings with ground wires according to claim 1 or 4, characterized in that: the steel plate (1) is a galvanized steel plate.