CN214542498U

CN214542498U - Large-load bottom insulation device for large-tonnage medium-wave broadcast transmitting antenna tower

Info

Publication number: CN214542498U
Application number: CN202120530558.6U
Authority: CN
Inventors: 范波; 汪东刚; 王新选; 张晨辉; 韩珂
Original assignee: Xianyang Guangtong Electronic Technology Co ltd
Current assignee: Xianyang Guangtong Electronic Technology Co ltd
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2021-10-29
Anticipated expiration: 2031-03-15

Abstract

A large-load bottom insulation device of a large-tonnage medium wave broadcasting transmitting antenna tower is characterized in that a central upper insulator and a peripheral insulator are arranged between a base and a limiting plate, a connecting flange is superposed above the limiting plate, a lower insulator is arranged below an upper flange plate of the base, a central screw rod sequentially penetrates through central holes in the connecting flange, the limiting plate, the central upper insulator, the base upper flange and the central lower insulator, drainage gaskets are padded at two ends of the central screw rod, and the device is connected together through a mounting nut; due to the structural form, the insulator is only stressed under any load condition, and the defects of poor tensile and bending resistance are overcome; the bearing capacity is higher by adopting a mode of supporting a plurality of peripheral insulators; the limiting pin on the device is a detachable pin, so that the convenience in dismounting and mounting of the insulator is guaranteed; the upper part of the peripheral insulator is provided with an insulator stress adjusting column, so that the stress balance of a plurality of peripheral insulators is ensured.

Description

Large-load bottom insulation device for large-tonnage medium-wave broadcast transmitting antenna tower

Technical Field

The utility model relates to a broadcast transmitting antenna tower technical field, in particular to large-tonnage medium wave broadcast transmitting antenna tower heavy load bottom insulator arrangement.

Background

The medium wave transmitting antenna is a special antenna, and is an antenna which forms a resonant loop with the ground to transmit electromagnetic waves outwards by an antenna body (the height is generally between 48 meters and 220 meters) vertically standing on the ground, and mainly transmits the electromagnetic waves to the space by the ground waves. The antenna has heavy weight and high height. The antenna body is insulated from the ground through an insulating device, namely all the weight of the high antenna body is pressed on the insulating device. The insulation device has the functions of ensuring the insulation of the antenna body from the ground on one hand and bearing the self weight and the wind-pulling force of the antenna body on the other hand.

At present, in order to combine the local landscape features, the medium wave transmitting antenna tower is designed to be a landscape medium wave transmitting antenna tower with the weight much larger than that of a pure medium wave transmitting antenna tower, and the design weight of the landscape medium wave transmitting antenna tower can be multiplied. The bottom insulating device of the medium wave transmitting antenna is used as the most concentrated part of the stress on the antenna, and the self weight and the wind pulling force of the antenna body born by the bottom insulating device can be greatly increased correspondingly.

At present, the bottom insulator arrangement that medium wave transmitting antenna tower was commonly used is the structural style that the public in the utility model of china patent ZL96227629.4, and this structural style's bottom insulator arrangement chooses the insulator arrangement of the biggest model insulator (the insulator is the ceramic, and the volume is big more, and the bearing capacity is big more, and the preparation degree of difficulty is high more) preparation of generally using on the existing market for use, and the biggest bad pressure 200 tons that bumps can only bear 60 tons of medium wave transmitting antenna tower. The tonnage of the landscape medium wave transmitting antenna tower is generally more than 200 tons, and obviously, the bottom insulation requirement of the landscape tower cannot be met by the conventional medium wave broadcasting transmitting antenna tower bottom insulation device.

Disclosure of Invention

In order to overcome the problem that the bottom insulating device of the medium wave transmitting antenna tower does not bear enough, the utility model aims to provide a large-load bottom insulating device of a large-tonnage medium wave broadcasting transmitting antenna tower, which has the characteristics of large bearing capacity, large bending load bearing capacity, safety, reliability, simple and reasonable structure, simple and easy installation and debugging, convenient maintenance and long service life.

In order to achieve the above purpose, the technical scheme of the utility model is that:

the utility model provides a medium wave broadcasting transmitting antenna tower heavy load bottom insulator arrangement, the on-line screen storage device comprises a base 1, install center upper insulator 4 and a plurality of peripheral insulator 6 between base 1 and the limiting plate 3, flange 2 has been overlapped to the top of limiting plate 3, insulator 5 under the upper flange 1.3 below installation center of base 1, flange 2 is passed in proper order to center lead screw 7, limiting plate 3, insulator 4 on the center, flange 1.3, the centre bore on insulator 5 under the center, the upper end nut of center lead screw 7 pushes down on flange 2 centre bore, the lower extreme nut of center lead screw 7 pushes up on insulator 5 bottom under the center.

And drainage gaskets 9 are padded at two ends of the central screw rod 7, an upper end nut of the central screw rod 7 is pressed down on a central hole of the connecting flange 2 through the drainage gaskets 9, and a lower end nut of the central screw rod 7 is pressed up on the drainage gasket 9 at the bottom end of the central lower insulator 5.

The peripheral insulators 6 are distributed on the periphery of the central upper insulator 4 and are arranged in a circumferential mode.

And a central screw rod insulating sleeve 8 is sleeved on the outer surface of the central screw rod 7, and the central screw rod insulating sleeve 8 does not contact with a cylinder cavity of the central upper insulator 4, a cylinder cavity of the central lower insulator 5 and a central hole expanding of the upper flange 1.3.

Insulator positioning pins 11 are arranged on the periphery of the contact part of the upper flange 1.3 and the central upper insulator 4, the periphery of the contact part of the upper flange 1.3 and the central lower insulator 5 and the periphery of the contact part of the upper flange 1.3 and the peripheral insulator 6; insulator locating pin 11 is installed on upper flange 1.3, with upper flange 1.3 threaded connection.

And an insulator stress adjusting column 10 for adjusting the stress of the insulator is arranged at the upper part of the peripheral insulator 6.

A plurality of tower jacking screw rods 12 are arranged between the connecting flange 2 and the upper flange 1.3.

A pair of discharge balls 13 for lightning protection are arranged between the connecting flange 2 and the upper flange 1.3.

And a rain-proof cap 14 made of red insulating material is arranged on the periphery of the peripheral insulator 6 between the connecting flange 2 and the upper flange 1.3.

The base 1 is an inverted barrel-shaped structure and is formed by riveting and welding a lower flange 1.1, a circular tube 1.2 and an upper flange 1.3, a circular hole connected with an antenna basic embedded part is formed in the lower flange 1.1, a manhole is formed in the circular tube 1.2, and a cover plate 15 is arranged on the manhole.

The utility model has the advantages that:

1. the upper end nut of the central screw rod of the utility model is pressed down on the central hole of the connecting flange, and the lower end nut of the central screw rod is pressed up on the drainage gasket at the bottom end of the central lower insulator, so that the top end of the central lower insulator is pressed on the upper flange of the base, and the upper and lower central insulators and the peripheral insulator are only pressed under any load condition, thereby overcoming the defects of poor tensile and bending resistance of the insulator (ceramic product); the drainage gasket is adopted at the bottom end of the lower insulator, so that condensed water can be conveniently drained in time, and the insulation effect is ensured; the bearing capacity is larger by adopting a mode of supporting a plurality of peripheral insulators.

2. The spacer pin install on the base flange, with flange threaded connection on the base, guarantee to pack into after all insulator installations are accomplished, perhaps after having the insulator to destroy, at first can lift the locating pin off before needing to be changed, guaranteed the easy dismounting of insulator.

3. The utility model discloses be equipped with the insulator atress regulation post of adjusting insulator atress size, guarantee that a plurality of peripheral insulators atress are balanced.

4. The utility model is provided with the rain-proof cap made of red insulating material, and the manhole on the round tube of the base is provided with the cover plate, thereby preventing small animals or birds from entering the vicinity of the insulator to form short circuit; meanwhile, the red rain hat can also play a role in warning.

Drawings

Fig. 1 is a front view of the structure of the present invention.

Fig. 2 is a sectional view a-a of fig. 1.

Fig. 3 is a sectional view B-B of fig. 1.

Fig. 4 is an enlarged view of the force-adjusting column 10.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Referring to fig. 1, the present embodiment has an overall height of 1800mm and a diameter of 2100mm, wherein: the height of the base 1 is 1200mm, and the diameter is 2100 mm; the heights of the central upper insulator 4, the central lower insulator 5 and the peripheral insulator 6 are 520mm, the diameters of the central upper insulator, the central lower insulator and the peripheral insulator are 370mm, and the crash pressure is 200 tons; the thickness of the connecting flange 2 is 40mm, and the diameter is 2200 mm; the thickness of the limiting plate 3 is 40mm, and the diameter is 1610 mm.

A large-load bottom insulation device of a medium-wave broadcasting transmitting antenna tower comprises a base 1, a central upper insulator 4 and a plurality of peripheral insulators 6 are arranged between the base 1 and a limiting plate 3, a connecting flange 2 is superposed above the limiting plate 3, a central lower insulator 5 is arranged below an upper flange 1.3 of the base 1, a central screw 7 sequentially penetrates through the connecting flange 2, the limiting plate 3, the central upper insulator 4, the upper flange 1.3 and a central lower insulator 5, an upper end nut of the central screw 7 is pressed down on the central flange 2, a lower end nut of the central screw 7 is pressed up on the bottom end of the central lower insulator 5, so that the top end of the central lower insulator 5 is pressed on the upper flange 1.3 of the base 2, and the structural form ensures that the upper central insulator, the lower central insulator and the peripheral insulators only bear tensile force under any load condition, thereby overcoming the tensile stress of ceramic products (insulators), Poor bending resistance.

Drainage gaskets 9 are padded at two ends of the central screw rod 7, an upper end nut of the central screw rod 7 is pressed down on a central hole of the connecting flange 2 through the drainage gaskets 9, and a lower end nut of the central screw rod 7 is pressed up on the drainage gasket 9 at the bottom end of the central lower insulator 5.

The peripheral insulators 6 are distributed on the periphery of the central upper insulator 4 and are arranged in a circumferential manner, and in the figure, the diameter of the circumference is 1400mm, and the number of the circumference is 6. The number may be set according to the weight of the antenna tower.

The outer surface of the central screw 7 is sleeved with a central screw insulating sleeve 8, the central screw insulating sleeve 8 does not contact with the cylinder cavity of the central upper insulator 4, the cylinder cavity of the central lower insulator 5 and the central hole expanding of the upper flange 1.3, and the purpose of completely insulating the base and the connecting flange by electric appliances is achieved.

Insulator positioning pins 11 are arranged on the periphery of the contact part of the upper flange 1.3 and the central upper insulator 4, the periphery of the contact part of the upper flange 1.3 and the central lower insulator 5 and the periphery of the contact part of the upper flange 1.3 and the peripheral insulator 6, and refer to fig. 2, and are used for limiting the positions of the insulators; insulator locating pin 11 is installed on upper flange 1.3, with upper flange 1.3 threaded connection, guarantees to pack into after all insulator installations are accomplished, perhaps after having the insulator to destroy, can lift off insulator locating pin 11 at first before needing to be changed, has guaranteed the easy dismounting of insulator.

Referring to fig. 1 and 4, an insulator stress adjusting column 10 for adjusting the stress of the insulator is arranged at the upper part of the peripheral insulator 6, and the height of the insulator stress adjusting column 10 is adjusted to ensure the stress balance of the peripheral insulators.

Referring to fig. 3, the limiting plate 3 is provided with hexagonal limiting holes, the number of the hexagonal limiting holes is the same as that of the peripheral insulators 6, and the hexagonal limiting holes are used for limiting the positions of nuts on the limiting columns. In the figure, the limiting plate 3 is provided with 6 hexagonal limiting holes for limiting the position and rotation of the nut on the limiting column 3.

And 50 tower jacking lead screws 12 are arranged between the connecting flange 2 and the upper flange 1.3, and the diameters of the tower jacking lead screws 12 are 48mm, so that the device is safe in transportation, insulators are protected, and all the tower jacking lead screws 12 are removed in use.

A pair of lightning protection discharge balls 13 are arranged between the connecting flange 2 and the upper flange 1.3 and used for instantly grounding equipment in a lightning environment and protecting the equipment from being damaged by lightning.

A rain-proof cap 14 made of red insulating material is arranged at the periphery of the peripheral insulator 6 between the connecting flange 2 and the upper flange 1.3, so that small animals or birds are prevented from entering the central upper insulator and the periphery of the peripheral insulator to form short circuit; meanwhile, the red rain hat can also play a role in warning.

The base 1 is of an inverted barrel-shaped structure and is formed by rivet welding of a lower flange 1.1, a circular tube 1.2 and an upper flange 1.3, a circular hole connected with an antenna basic embedded part is formed in the lower flange 1.1, a manhole is formed in the circular tube 1.2, and installation personnel can conveniently enter the tube to perform installation and maintenance; the manhole is provided with a cover plate 15 to prevent small animals or birds from entering the vicinity of the central lower insulator to form a short circuit.

The utility model discloses a theory of operation does:

the utility model discloses the same with current well ripples transmitting antenna tower bottom insulator arrangement using-way, central insulator and peripheral insulator have overcome insulator (ceramic) tensile, the poor shortcoming of anti bending property under any load condition only by pressure, adopt the form that a plurality of peripheral insulators supported, and bearing capacity is bigger, and the drainage packing ring that adopts in the insulator bottom under can make the comdenstion water discharge in time conveniently, guarantees insulating effect. The insulator stress adjusting column ensures that the stress of a plurality of peripheral insulators is balanced.

Through the test, the utility model discloses a crash pressure that the embodiment can bear is 1200 tons, during normal use, uses under the tower that single-column machinery bearing capacity is not less than 300 tons, and its power frequency exchanges withstand voltage ability for high frequency 50KV, and it is 20KV to convert into high frequency and exchanges withstand voltage, and its power capacity is not less than 100KW, has reached the design requirement.

Claims

1. The utility model provides a medium wave broadcasting transmitting antenna tower heavy load bottom insulator arrangement, including base (1), a serial communication port, install center upper insulator (4) and a plurality of peripheral insulator (6) between base (1) and limiting plate (3), the top of limiting plate (3) is overlapped has flange (2), insulator (5) under the upper flange (1.3) below installation center of base (1), flange (2) are passed in proper order in central lead screw (7), limiting plate (3), center upper insulator (4), upper flange (1.3), the centre bore on insulator (5) under the center, the upper end nut of central lead screw (7) pushes down on flange (2) centre bore, the lower extreme nut of central lead screw (7) pushes up on insulator (5) bottom under the center.

2. A medium wave broadcasting transmitting antenna tower heavy load bottom insulator arrangement according to claim 1, characterized in that both ends of said central screw (7) are padded with drainage gasket (9), the upper nut of the central screw (7) is pressed down on the central hole of the connecting flange (2) through the drainage gasket (9), and the lower nut of the central screw (7) is pressed up on the drainage gasket (9) on the bottom end of the central lower insulator (5).

3. A medium wave broadcast transmitting antenna tower heavy load bottom insulation device according to claim 1, characterized in that said peripheral insulators (6) are distributed on the periphery of the central upper insulator (4) in a circumferential arrangement.

4. The large-load bottom insulation device of a medium wave broadcasting transmitting antenna tower according to claim 1, characterized in that a center lead screw insulation sleeve (8) is sleeved on the outer surface of the center lead screw (7), and the center lead screw insulation sleeve (8) does not contact the cylindrical cavity of the center upper insulator (4), the cylindrical cavity of the center lower insulator (5) and the center hole expanding of the upper flange (1.3).

5. The tower high-load bottom insulation device of the medium wave broadcasting transmitting antenna according to claim 1, characterized in that the periphery of the contact part of the upper flange (1.3) and the central upper insulator (4), the periphery of the contact part of the upper flange (1.3) and the central lower insulator (5), and the periphery of the contact part of the upper flange (1.3) and the peripheral insulator (6) are provided with insulator positioning pins (11); the insulator positioning pin (11) is arranged on the upper flange (1.3) and is in threaded connection with the upper flange (1.3).

6. A medium wave broadcasting transmitting antenna tower heavy load bottom insulator arrangement according to claim 1, characterized in that the peripheral insulator (6) is provided with insulator stress adjusting columns (10) on top to adjust the insulator stress.

7. A medium wave broadcast transmitting antenna tower heavy load bottom insulation as claimed in claim 1, characterized in that a plurality of top tower screws (12) are provided between said connecting flange (2) and upper flange (1.3).

8. A medium wave broadcasting transmitting antenna tower heavy load bottom insulation according to claim 1 characterized by that between the connecting flange (2) and the upper flange (1.3) there is a pair of lightning protection discharge balls (13).

9. A medium wave broadcast transmitting antenna tower heavy load bottom insulation device according to claim 1, characterized in that the periphery of said peripheral insulator (6), between the connecting flange (2) and the upper flange (1.3), is provided with a rain hat (14) made of red insulating material.

10. The large-load bottom insulation device of the medium wave broadcasting transmitting antenna tower according to claim 1, wherein the base (1) is of an inverted barrel-shaped structure and is formed by rivet welding of a lower flange (1.1), a circular tube (1.2) and an upper flange (1.3), a circular hole connected with an antenna base embedded part is formed in the lower flange (1.1), a manhole is formed in the circular tube (1.2), and the manhole is provided with a cover plate (15).