JPH04318480A - Device for absorbing displacement of ground of radar facility - Google Patents

Abstract

PURPOSE:To enable a displacement of a ground to be absorbed by providing a hydraulic expansion and contraction means on a plurality of foundations, linking these upper- edge portions at a reception trestle, setting up an antenna on it, and then controlling a hydraulic supply means based on a signal from a displacement detection means of the ground. CONSTITUTION:A hydraulic jack 2 is setting up on a plurality of foundations 1a-1b which are set up on a ground and is expanded and contracted by a hydraulic motor. Four-corner portions of a horizontal reception trestle 5 are linked to an upper-edge portion of an operation rod 3 of a jack 2 through shoes 4 and a spherical surface seat 4' and a plurality of antennas 6 are set up on the reception trestle 5. Also, displacement meters in vertical and horizontal directions are laid within the ground. When the ground sinks or rises now, a control center operates the hydraulic motor based on a signal from the displacement meter in vertical direction and then compensates for the hydraulic jack 2 automatically. Also, when the ground is displaced slightly for the shoes and the spherical surface seat 4', the jack 2 is slightly displaced or rotated for the shoes 4 and the spherical surface seat', performs compensation automatically, and the raises a foundation 1 and then absorbs the displacement when the displacement is large.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground displacement absorbing device for radar equipment.

0002

[Prior Art] As is well known, in air traffic control, etc.
Equipped with radar equipment. Typically, a required holding accuracy is set to maintain the functionality of this radar equipment, and an allowable displacement from the outside world is determined.

0003

[Problem to be solved by the invention] On the other hand, radar equipment
They are located in locations far away from the general population, such as in mountainous areas or on remote islands. However, it is often necessary to install them in areas with active volcanic activity, and in this case, the ground displacement due to upheaval and subsidence of the ground is large. Therefore, it may be extremely difficult to maintain the functionality of the radar equipment, and there is a need for a device that absorbs ground displacement in the radar body.

The present invention was made in response to such a need, and an object of the present invention is to provide a ground displacement absorbing device for radar equipment that maintains the required accuracy of the radar equipment.

[0005]

[Means for Solving the Problems] According to the present invention, extending/contracting means that extend and contract using hydraulic pressure are erected on a plurality of foundations, and the upper ends of these extending/contracting means are respectively connected to a pedestal via a shoe and a spherical seat. A plurality of antennas are connected to each other, and a plurality of antennas are erected on the receiving frame, and a ground displacement detection means is provided, and a control means is provided for controlling the pressure oil supply means to the expansion and contraction means based on a signal from the displacement detection means. There is.

[0006] Preferably, the telescoping means is constituted by a hydraulic jack equipped with a hydraulic motor. Moreover, it is preferable that the pressure oil supply means is constituted by a hydraulic unit equipped with a hydraulic pump.

[0007] Furthermore, it is preferable that the displacement detecting means is constituted by a displacement meter that detects displacement of the ground in the vertical and horizontal directions.

[0008] Furthermore, it is preferable that the control means comprises a control center equipped with a transducer, a recorder, and a computer, and a plurality of displacement gauges and hydraulic units are each connected to the control center via a joint box.

[0009]

[Operation] In the ground displacement absorbing device for radar equipment configured as described above, when the ground subsides, the control center controls the hydraulic unit and operates the hydraulic motor based on the signal from the vertical displacement meter. The sinking displacement is automatically absorbed by increasing the stroke of the hydraulic jack by the amount of sinking.

Furthermore, when the ground rises, the uplift displacement is automatically absorbed by reducing the stroke of the hydraulic jack by the amount of uplift, contrary to the above.

[0011] Also, if the ground is slightly displaced in the horizontal direction,
The hydraulic jack on the ground is slightly displaced or rotated relative to the shoe and the spherical seat, absorbing the slight horizontal displacement and inclination.

[0012] Furthermore, if the ground is significantly displaced in the horizontal direction, this can be absorbed by replacing the foundation.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be described below with reference to the drawings.

In FIG. 1, a plurality of (
Hydraulic jacks 2, which serve as expansion and contraction means, are erected on top of concrete foundations 1a to 1b (the one behind them is not shown; reference numeral 1 is used when collectively referring to them) of concrete foundations 1a to 1b (two pairs in the illustrated example). It is extended and contracted by a hydraulic motor (not shown).

[0015] The upper ends of the operating rods 3 of these hydraulic jacks 2 are connected to the four corners of a horizontal pedestal 5, which is long in the left-right direction in the drawing, through shoes 4 and spherical seats 4'. A plurality of antennas 6 are mounted on this cradle 5.
~6 are erected.

In FIG. 2, the hydraulic jacks 2-2 are connected by a hydraulic circuit L1 to a hydraulic unit 7, which is a pressure oil supply means and includes a hydraulic pump (not shown). The plurality of hydraulic units 7 to 7 are connected to a joint box 14 by an electric circuit E1, and this joint box 14 consists of a computer 11, a recorder 12, and a converter 13 provided in the control building B by an electric circuit E2. It is connected to a computer 11 of a control means or control center 10.

The converter 13 is connected to a joint box 15 through an electric circuit E3, and to this joint box 15 are connected displacement meters 8 to 8 for detecting displacements in a plurality of vertical and horizontal directions through an electric circuit E4. has been done. This displacement meter 8 is buried at a necessary location in the ground closer to the radar than side C.

Next, the operation will be explained with reference to FIG.

The control center 10 determines the vertical displacement of the ground A (here,
displacement in the sinking direction is detected (step S1). Next, it is determined whether the displacement is zero (step S2), and if YES, the control is ended; if NO, then
It is determined whether the displacement is positive (step S3). NO
That is, in the case of subsidence (right half of FIG. 1), the hydraulic unit 7 is controlled to increase the stroke of the hydraulic jack 2 (step S4). If NO, that is, a bump (left half of FIG. 1), the hydraulic unit 7 is controlled to reduce the stroke of the hydraulic jack 2 (step S5), and the process returns to step S1, where the displacement due to the sinking or bump is absorbed and becomes zero. When step S2 becomes YES, the control ends.

[0020] Also, for example, one concrete foundation 1a
When the hydraulic jack 2 on the foundation 1a is displaced in the horizontal direction due to the displacement of the ground A, the hydraulic jack 2 on the foundation 1a is displaced by the foot 4, and a slight horizontal displacement can be absorbed. Further, when the hydraulic jack 2 on the base 1a is tilted by a certain amount D in the horizontal direction, for example to the left, the hydraulic jack 2 on the base 1a rotates to the chain line position 2a with respect to the spherical seat 4', and the slight tilting displacement D is absorbed.

Furthermore, if the horizontal displacement of the concrete foundation 1a is large, it can be absorbed by replacing the concrete foundation 1a.

[0022]

[Effects of the Invention] Since the present invention is constructed as described above, ground displacement can be automatically absorbed and the necessary accuracy of radar equipment can be maintained.

[Brief explanation of drawings]

FIG. 1 is a side view showing one embodiment of the present invention.

FIG. 2 is a control block diagram.

FIG. 3 is a control flowchart diagram.

[Explanation of symbols]

A...ground 1... Concrete foundation 2...Hydraulic jack 3... Operating rod 4... Shoes 4'... Spherical seat 5... cradle 6... antenna 7... Hydraulic unit 8...Displacement meter 10...Control center

Claims (1)

[Claims] Claim 1: Expanding and retracting means that extend and retract using hydraulic pressure are erected on a plurality of foundations, and the upper ends of these extensible means are respectively connected by a pedestal via a shoe and a spherical seat, and a plurality of antennas are mounted on the pedestal. ground displacement of a radar equipment, characterized in that a ground displacement detecting means is provided, and a control means is provided for controlling a means for supplying pressure oil to the expansion and contraction means based on a signal from the displacement detecting means. Absorption device.