KR-20260064655-A - MULTI-AXIS INSPECTION APPARATUS FOR BRIDGE RUBBER BEARING

Abstract

The present invention relates to a measuring device for the amount of movement of a bridge support device that supports a girder, comprising an upper plate (110), a pad (130), and a lower plate (120). An inclined plate (200) is fixedly installed on the lower plate (120), and a vertically movable indicator rod (300) is mounted on the upper plate (110). When the lower end of the indicator rod (300) is in contact with the surface of the inclined plate (200), and the upper plate (110) moves according to the deformation of the pad (130), the position of the lower end of the indicator rod (300) on the surface of the inclined plate (200) changes, thereby allowing the amount of movement of the support device to be measured not only in a direction perpendicular to the observer's line of sight but also in a direction parallel to the observer's line of sight at once. Through the present invention, when measuring the amount of movement of a bridge bearing device, a single measuring device can be used to measure the amount of movement formed in multiple axes on a plane all at once, so simple and accurate measurement is possible without installing multiple separate measuring devices to measure the amount of movement in the bridge axis direction and the amount of movement perpendicular to the bridge axis of the bridge bearing device.

Inventors

• 이준석

Assignees

• 주식회사내일기술단

Dates

Publication Date

20260507

Application Date

20260218

Claims (2)

1. A multi-axis movement measuring device for a bridge support device that supports a girder, comprising an upper plate (110), a pad (130), and a lower plate (120), wherein an inclined plate (200) having a grid formed by a plurality of mutually intersecting vertical and horizontal lines on an inclined surface is installed on the outer part of the lower plate (120), a guide tube (320) is installed on the upper plate (110), and a pointer rod (300) is connected to the guide tube (320) so as to be vertically movable, and the lower end of the pointer rod (300) contacts the inclined surface of the inclined plate (200), so that as the upper plate (110) moves, the lower end of the pointer rod (300) moves while in contact with the inclined surface of the inclined plate (200). A horizontal extension plate (205) is formed at the lower end of the inclined surface of the inclined plate (200), and a longitudinal hole (207) is formed in the extension plate (205); A control plate (220) having a transverse hole (227) and an upwardly protruding male screw formed therein is installed on the lower part of the inclined plate (200), wherein the male screw of the control plate (220) is coupled to the longitudinal hole (207) of the extension plate (205); A fixing plate (210) having an upwardly protruding male screw formed as a plate body attached to the outer edge of the lower plate (120) is installed at the lower part of the adjusting plate (220), wherein the male screw of the fixing plate (210) is coupled to the horizontal elongated hole (227) of the adjusting plate (220); A multi-axis movement measuring device for a bridge support device, characterized in that the inclined plate (200) reciprocates in the direction of the centerline of the longitudinal hole (207) on the upper part of the adjusting plate (220), and the adjusting plate (220) reciprocates in the direction of the centerline of the transverse hole (227) on the upper part of the fixed plate (210), thereby changing the planar position of the inclined plate (200).
2. In claim 1, A multi-axis movement measuring device for a bridge support device, characterized in that a ball caster (305) is formed at the bottom of the indicator rod (300), and the outer surface of the ball caster (305) contacts the inclined surface of the inclined plate (200).

Description

Multi-axis Inspection Apparatus for Bridge Rubber Bearing The present invention relates to a measuring device for the amount of movement of a bridge support device that supports a girder, comprising an upper plate (110), a pad (130), and a lower plate (120). An inclined plate (200) is fixedly installed on the lower plate (120), and a vertically movable indicator rod (300) is mounted on the upper plate (110). When the lower end of the indicator rod (300) is in contact with the surface of the inclined plate (200), and the upper plate (110) moves according to the deformation of the pad (130), the position of the lower end of the indicator rod (300) on the surface of the inclined plate (200) changes, thereby allowing the amount of movement of the support device to be measured not only in a direction perpendicular to the observer's line of sight but also in a direction parallel to the observer's line of sight at once. A bridge bearing device is a device that supports the girder, which is the superstructure of the bridge, and transmits the load of the superstructure to the pier or abutment, which is the substructure. As the girder, which is the superstructure, deforms due to factors such as temperature changes or traffic loads, the bearing device accommodates this deformation. These bridge support devices may have various forms depending on their structural type, but in a significant number of bridges, an elastic support device is utilized in which an upper plate (110), a pad (130), and a lower plate (120) are sequentially stacked and joined. The upper surface of the upper plate (110) of the elastic support device is joined to the lower surface of the girder, and the lower surface of the lower plate (120) is joined to a lower structure such as the upper surface of a bridge pier or the upper surface of an abutment. A rubber pad (130) is joined between the lower surface of the upper plate (110) and the upper surface of the lower plate (120) to support the upper structure and accommodate deformation. Accordingly, when a girder in a bridge with a support device is extended in the axial direction or moved in a direction intersecting the axial direction, the upper plate (110) connected to the girder also moves along with it, and the lower plate (120) fixed to the pier or abutment remains stationary, and the pad (130) connected between the upper plate (110) and the lower plate (120) is deformed. By measuring the amount of movement of the upper plate (110) relative to the lower plate (120), the stability of the support device, including whether the pad (130) is properly deformed, is verified. That is, the movement measurement device of a bridge support device composed of an upper plate (110), a pad (130), and a lower plate (120) can be described as a device for measuring the movement distance of the upper plate (110) relative to the lower plate (120), and related prior art may include Patent No. 1695323. Conventional bridge support device movement measurement devices, including Patent No. 1695323, are devices for measuring the distance of movement of an upper plate (110) relative to a fixed lower plate (120), as described above. They are generally composed of a scale fixedly installed on the lower plate (120) and an indicator mounted on the upper plate (110) that moves along the scale, and thus only the amount of movement in the direction of the scale installation can be measured. In general bridge bearing devices, measuring the amount of displacement in the longitudinal direction is important, and in conventional measuring devices, the scale is generally installed parallel to the longitudinal direction. Since it is impossible for an observer to observe the bridge plane from the upper side of the bearing device or measuring device due to the structure of the bearing device installed at the bottom of the girder, an observer who descends to the bottom of the girder via an inspection ladder or the like checks the measurement value from the front of the scale. FIG. 1 is an explanatory diagram of the installation state of the present invention. FIG. 2 is an excerpted perspective view of a support device in which the present invention is installed. FIG. 3 is a perspective view of the present invention FIG. 4 is an explanatory diagram of the operation and usage method of the present invention. FIG. 5 is an exploded perspective view of the present invention. FIG. 6 is an explanatory diagram of the control method of the present invention. FIG. 7 is a structural diagram of a rotary embodiment of the present invention. The multi-axis displacement measuring device for a bridge support device according to the present invention is installed between an upper plate (110) and a lower plate (120) constituting the support device as shown in FIG. 1, and is a device for measuring the relative displacement of the upper plate (110) with respect to the fixed lower plate (120), and can simultaneously measure the displacement of the upper plate (