CN216999824U - Adjusting device for foundation settlement and horizontal displacement of power transmission line iron tower - Google Patents

Abstract

The utility model discloses a regulating device for foundation settlement of an iron tower of a power transmission line and limited horizontal displacement, which solves the problem of how to conveniently regulate an iron tower foot with slight horizontal displacement and large-amplitude settlement at one time; the tower leg support comprises an iron tower foundation main column (1) and a tower foot plate (3), wherein tower legs (2) are fixedly arranged on the tower foot plate (3), an eccentric support (4) with a gravity center capable of translating vertically is arranged between the tower foot plate (3) and the iron tower foundation main column (1), the eccentric support (4) with the gravity center capable of translating vertically is composed of a rectangular bottom end plate (5), a rectangular top end plate (6), a cross vertical plate (10) at the gravity center before displacement and a cross vertical plate (9) at the gravity center after displacement, and the eccentric support (4) is enough to overcome limited displacement of the center; the foundation of the settlement iron tower with slight horizontal displacement can be conveniently adjusted on site in real time.

Description

Adjusting device for foundation settlement and horizontal displacement of power transmission line iron tower

Technical Field

The utility model relates to a power transmission line iron tower foundation, in particular to an adjusting device when the power transmission line iron tower foundation has large-amplitude uneven settlement and horizontal displacement.

Background

In recent years, the subsidence of the ground surface is caused by the transitional exploitation of underground mineral products, a power transmission line iron tower is generally arranged on a basic main column through tower foot plates on four tower legs, foundation bolts are pre-embedded in the basic main column, and the tower foot plates are sleeved on the foundation bolts; the concentrated load of the iron tower foundation on the ground is large, if the power transmission iron tower is arranged in a mining influence area, the uneven settlement of the power transmission iron tower foundation is easy to occur, if the uneven settlement occurs on the four tower foot foundations, the stress system of the iron tower can be greatly changed, and the iron tower is directly inclined and deformed, even the serious consequence of tower collapse and line breakage occurs; therefore, when the foundation of the power transmission line iron tower in the mining affected area is settled, the foundation needs to be adjusted and fixed in time; at present, the foundation settlement adjusting method of the power transmission tower mainly comprises the following steps: the hydraulic adjusting device and the special tower foot plate are preset, the adjusting method of the hydraulic adjusting device is high in early investment cost, the device needs to be buried in a large area, special personnel are needed to maintain during operation, the adjusting range of the device is limited, and the device is not suitable for occasions with large settling amplitude; the specially-made tower foot plate is adjusted into a disposable adjusting device, and the adjusting range is limited; because foundation settlement is often accompanied with displacement of the foundation in the horizontal direction, when the horizontal displacement is not large, how to quickly and once adjust and treat the settlement so as to enable the power supply iron tower to be restored to a normal operation state as soon as possible is a problem which needs to be solved urgently on site.

Disclosure of Invention

The utility model provides a device for adjusting foundation settlement and horizontal displacement of an iron tower of a power transmission line, and solves the technical problem of conveniently and rapidly adjusting iron tower ground feet with horizontal displacement and large-amplitude settlement at one time.

The utility model solves the technical problems by the following technical scheme:

a regulating device for power transmission line iron tower foundation settlement and limited horizontal displacement comprises an iron tower foundation main column and a tower foot plate, wherein tower legs are fixedly arranged on the tower foot plate, an eccentric support for gravity center perpendicular line translation is arranged between the tower foot plate and the iron tower foundation main column, and the eccentric support for gravity center perpendicular line translation is composed of a rectangular bottom end plate, a rectangular top end plate, a cross vertical plate at the gravity center position before displacement and a cross vertical plate at the gravity center position after displacement; a rectangular bottom plate of an eccentric support, which is fixedly connected to the top end face of a main column of an iron tower foundation through foundation bolts, a rectangular top plate of the eccentric support is fixedly connected with a tower foot plate through top end fixed connecting bolts, a cross vertical plate at the center of gravity after displacement is fixedly connected to the left part of the top end face of the rectangular bottom plate, the top end face of the cross vertical plate at the center of gravity after displacement is welded to the bottom end face of the rectangular top plate, a cross vertical plate at the center of gravity before displacement is fixedly connected to the right part of the top end face of the rectangular bottom plate, the top end face of the cross vertical plate at the center of gravity before displacement is welded to the bottom end face of the rectangular top plate, a reinforcing rib plate of the vertical plate after displacement is arranged between the cross vertical plate at the center of gravity after displacement and the rectangular bottom plate, and a reinforcing rib plate before displacement is arranged between the cross vertical plate at the center of gravity before displacement and the bottom end face of the rectangular top plate A rib plate.

The distance between the center point of the crossed vertical plate at the gravity center after displacement and the center point of the crossed vertical plate at the gravity center before displacement is not more than 240 mm, the translation of the gravity center vertical line is not suitable to be too large, and the maximum deviation value can be calculated and determined according to the eccentric stress of the adjusting device.

The utility model has simple structure and low cost, is convenient for conveniently and rapidly adjusting the settlement iron tower foundation with slight horizontal displacement on site in real time, is particularly suitable for being used when the phenomenon of large-scale settlement occurs, saves the engineering investment, ensures the safe operation of the transmission line and has better safety and economy.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the eccentric support 4 with its center of gravity translated vertically according to the present invention;

FIG. 3 is a sectional view taken along line A-A in FIG. 2;

fig. 4 is a sectional view taken along line B-B in fig. 2.

Detailed Description

The utility model is described in detail below with reference to the accompanying drawings:

a regulating device for the foundation settlement of a power transmission line iron tower and limited horizontal displacement comprises an iron tower foundation main column 1 and a tower foot plate 3, wherein tower legs 2 are fixedly arranged on the tower foot plate 3, an eccentric support 4 for gravity center vertical line translation is arranged between the tower foot plate 3 and the iron tower foundation main column 1, and the eccentric support 4 for gravity center vertical line translation is composed of a rectangular bottom end plate 5, a rectangular top end plate 6, a cross vertical plate 10 at the gravity center position before displacement and a cross vertical plate 9 at the gravity center position after displacement; a rectangular bottom end plate 5 of an eccentric support 4 is fixedly connected on the top end face of an iron tower foundation main column 1 through a foundation bolt 7, a rectangular top end plate 6 of the eccentric support 4 is fixedly connected with a tower foot plate 3 through a top end fixed connecting bolt 8, a cross vertical plate 9 at the gravity center position after displacement is fixedly connected on the left part of the top end face of the rectangular bottom end plate 5, the top end face of the cross vertical plate 9 at the gravity center position after displacement is welded with the bottom end face of the rectangular top end plate 6, a cross vertical plate 10 at the gravity center position before displacement is fixedly connected on the right part of the top end face of the rectangular bottom end plate 5, the top end face of the cross vertical plate 10 at the gravity center position before displacement is welded with the bottom end face of the rectangular top end plate 6, a vertical plate reinforcing rib plate 11 after displacement is arranged between the cross vertical plate 9 at the gravity center position after displacement and the rectangular bottom end plate 5, a displacement front vertical plate reinforcing rib plate 12 is arranged between the cross vertical plate 10 at the gravity center position before displacement and the bottom end face of the rectangular top end plate 6.

The distance between the center point of the crossed vertical plate 9 at the gravity center after displacement and the center point of the crossed vertical plate 10 at the gravity center before displacement is not more than 240 mm, the translation of the gravity center vertical line is not too large, and the maximum deviation value can be determined by calculation according to the eccentric stress of the adjusting device.

When the relative uneven settlement of four anchor feet of the iron tower is within 200 mm, only slotted steel base plates are required to be arranged between the main column of the iron tower foundation and the tower foot plates which are relatively settled in a staggered manner, and the four tower foot plates are adjusted to be at the same height; when the relative uneven settlement of four anchor feet of the iron tower is more than 200 mm and the relative uneven settlement is accompanied by the displacement in the horizontal direction, an eccentric support 4 is arranged between a main column of an iron tower foundation with larger relative settlement and a tower foot plate, after the on-site measurement, the horizontal displacement and the settlement are determined, the eccentric support 4 is manufactured according to the size obtained by the measurement, the tower foot plate 3 is lifted, the eccentric support 4 is placed between the tower foot plate 3 and the main column 1 of the iron tower foundation and is fixed by a connecting bolt, because the cross vertical plate 10 and the rectangular top end plate 6 at the gravity center before the displacement are crossed, and the reinforcing rib plate 12 of the front displacement vertical plate is arranged on the bottom end surface of the rectangular top end plate 6, the weight of the tower legs 2 is supported by the rectangular top end plate 6, because the cross vertical plate 9 and the rectangular bottom end plate 5 at the gravity center after the displacement are crossed, and the reinforcing rib plate 11 of the rear displacement vertical plate is arranged on the upper end of the rectangular bottom end plate 5, the eccentric support 4 and the main column 1 of the iron tower foundation are fixed together, and the eccentric support 4 can sufficiently bear the eccentric load caused by foundation settlement and horizontal displacement due to the effects of the crossed vertical plates 9 at the gravity center after displacement, the crossed vertical plates 10 at the gravity center before displacement, the reinforced rib plates 11 of the vertical plates after displacement and the reinforced rib plates 12 of the vertical plates before displacement; the utility model has simple field operation, can effectively and timely adjust the uneven settlement and the horizontal displacement, avoids the shifting of a tower foundation or the new construction of a line changing line, effectively reduces the power failure time and greatly reduces the engineering investment. Compared with a single-base-tower shifted new construction, the utility model saves about 210 ten thousand yuan of investment when being adopted for a 500kV line; the utility model saves investment by about 90 ten thousand yuan compared with a single-base tower when being newly built for a 220kV line, and has good technical economic benefit, environmental benefit and social benefit.

Claims (2)

1. A regulating device for power transmission line iron tower foundation settlement and limited horizontal displacement, which comprises an iron tower foundation main column (1) and a tower foot plate (3), wherein tower legs (2) are fixedly arranged on the tower foot plate (3), and is characterized in that an eccentric support (4) with a center of gravity capable of translating vertically is arranged between the tower foot plate (3) and the iron tower foundation main column (1), and the eccentric support (4) consists of a rectangular bottom end plate (5), a rectangular top end plate (6), a cross vertical plate (10) at the center of gravity before displacement and a cross vertical plate (9) at the center of gravity after displacement; a rectangular bottom end plate (5) of an eccentric support (4) is fixedly connected to the top end face of a main column (1) of an iron tower foundation through foundation bolts (7), a rectangular top end plate (6) of the eccentric support (4) is fixedly connected with a tower foot plate (3) through a top end fixed connecting bolt (8), a cross vertical plate (9) at the center of gravity after displacement is fixedly connected to the left part of the top end face of the rectangular bottom end plate (5), the top end face of the cross vertical plate (9) at the center of gravity after displacement is welded with the bottom end face of the rectangular top end plate (6), a cross vertical plate (10) at the center of gravity before displacement is fixedly connected to the right part of the top end face of the rectangular bottom end plate (5), the top end face of the cross vertical plate (10) at the center of gravity before displacement is welded with the bottom end face of the rectangular top end plate (6), a displacement rear vertical plate reinforcing rib plate (11) is arranged between the cross vertical plate (9) at the gravity center position after displacement and the rectangular bottom end plate (5), and a displacement front vertical plate reinforcing rib plate (12) is arranged between the cross vertical plate (10) at the gravity center position before displacement and the bottom end surface of the rectangular top end plate (6).

2. The adjusting device for foundation settlement of the power transmission line iron tower and limited horizontal displacement as claimed in claim 1, wherein the distance between the center point of the crossed vertical plate (9) at the center of gravity after displacement and the center point of the crossed vertical plate (10) at the center of gravity before displacement is not more than 240 mm.

Images