JPS61126204A - Bridge maintenance apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF APPLICATION The present invention relates to a bridge maintenance device, and in particular, mainly for repairing rust on steel materials, peeling of paint, or cracks on concrete woodblocks on the lower surface of road bridges or Takaguri roads. Regarding bridge maintenance equipment that can inspect and repair bridges.

Prior Art Conventionally, this type of m-beam maintenance equipment has been used to inspect the underside of a bridge while an inspection table moves along a rail installed on the underside of the bridge in the longitudinal direction of the bridge. There is. However, this bridge maintenance device cannot be moved across piers, has a complicated structure, and is difficult to remove, so it has the disadvantage that one device must be installed in advance between each pier.

Furthermore, there is a known bridge maintenance device that extends an arm from a vehicle stopped on a road on a bridge to the lower side of the bridge, and performs inspections and repairs on a work gondola or work scaffold attached to this arm. With this device, vehicles must be stopped on the road above the bridge, which obstructs traffic and is problematic when detours cannot be taken, such as on expressways. A bridge maintenance device has also been considered in which an arm is extended from the base to the lower side of the bridge, and maintenance is performed on a workbench attached to this arm, but conventional bridge railings are weak, so In reality, it is not possible to install the above-mentioned device as is on existing railings, which requires significant reinforcement, and it is not possible to install the device as is on existing railings. There is a problem that the device cannot be installed.

The present invention has been devised in view of the above-mentioned problems and to effectively solve them.

Purpose of the Invention An object of the present invention is to easily perform maintenance such as inspection and repair of the underside of a bridge by simply fitting it into a mounting member pre-installed on the bridge, and to prevent obstructions to traffic on the bridge. The object of the present invention is to provide a bridge maintenance device with a simple structure.

Structure of the Invention In order to achieve the above object, the present invention includes a base that is detachably attached to the side surface of a bridge via a mounting member, a first arm that is rotatably provided on the base, and a first arm that is rotatably attached to the first arm. The second arm is provided to be extendable and retractable, and a third arm is provided to the second arm so as to be freely pivotable, and a work inspection means is provided to the third arm.

EXAMPLE Hereinafter, a bridge maintenance device according to the present invention will be explained based on the drawings.

1 to 4 show an embodiment of the present invention,
Reference numeral 1 in the figure indicates a mounting member provided on a side surface of a bridge 4 such as a bridge girder 2 or a bridge pier 6.

The mounting member 1 is provided to protrude from the side surface of the bridge 4, and has a pair of cylindrical portions 1a formed at its tip. A pair of mounting pins 6 formed at both ends of the base 50 of the bridge maintenance device according to the present invention are fitted into each cylindrical portion 1a, and a vertical shaft 7 is fitted into the center of the base 5. is installed vertically. Further, a first arm 8 is rotatably provided on the vertical shaft 7. And the first
A kakunta weight 9 for balance is provided at the base end of the arm 80, and a first weight is provided at the distal end of the arm 80.
A twenty-seventh arm 10 is inserted into the arm 8 in a nested manner. The second arm 10 is configured to extend and contract in the axial direction of the arm by a cylinder provided in the first arm 8 or a driving device (not shown) such as a motor, pinion, or rack. Furthermore, Section 27-10
A third arm 11 is rotatably provided at the tip of the third arm 11, and a movable shaft 12 is provided at the tip of the third arm 11 so as to be movable up and down. A work inspection means 15 composed of a camera 13 and a light 14 is provided at the upper end of the movable shaft 12.
is adapted to move in the vertical direction by a drive device (not shown) such as a motor, pinion, or rack installed between the third arm 11 and the movable shaft 12.

A motor 16 is installed inside the tip of the second arm 10, and a gear 17 attached to the tip of the rotating shaft 16a connects to the fixed shaft 11 fixed to the base end of the third arm 11.
It is meshed with a gear 18 attached to the tip of a. By rotating the rotating shaft 16a of the motor 160, the 37th arm 11 is configured to pivot around the tip of the second arm IO. Note that a swing drive device (not shown) having a similar structure and consisting of a motor and gears is also provided between the vertical shaft 7 and the first arm 8. Note that 19 is a deck slab supported by the bridge girder 2.

Next, the operation of the bridge maintenance device configured as described above will be explained.

First, after fixing the mounting members l to the bridge girder 2 or the bridge pier 3 of the bridge 4 at appropriate intervals in advance, the bridge maintenance device according to the present invention is lowered along the side surface of the bridge 4, and the base 5 is attached. The bridge maintenance device is attached to the bridge 4 by fitting the pin 6 into the cylindrical portion 1a of the attachment member 1. Next, while looking at a monitor device (not shown), the six-sided drive device is remotely operated to rotate the first arm 8 around the vertical axis 7 and move the second arm 10 relative to the first arm 8. the third arm 10 with respect to the second arm 10;
By rotating the arm 11, the work inspection means 1
5 to a desired position on the lower surface of the bridge 4. Then, the lower surface of the bridge 4 is inspected using the camera 13 and light 14 of the work inspection means 15. At this time, if necessary, the movable shaft 12 is moved up and down to move the work inspection means 15 to the bridge 4. Move closer or further away. In this way, when the entire range that can be inspected when the bridge maintenance device is installed on one mounting member 1 of the lower surface of @beam 4 is inspected, the base 5 Remove the mounting bin 6 and attach the bridge maintenance device to the next mounting member 1.

By repeating this operation, the entire lower surface of the bridge 4 can be inspected.

The above is a case where the mounting member is provided on the side of the bridge.
As another example, if there is a base such as a sidewalk on the bridge and it does not obstruct vehicle traffic, the base 5 may be placed on the sidewalk etc. on the bridge.
It is also possible to temporarily install a holder and suspend the device from there.

FIG. 3, FIG. 7, and FIG. 8 are examples thereof.

The camera 15 and light 14 used in this embodiment may be configured to rotate around the axis of the movable shaft 12 as the work inspection means 15. As shown in Figure 2, a workbench may be installed so that a worker can ride on the workbench for inspection and repair.In that case, the driving device for swinging, telescoping, or lifting may be hydraulically driven. It is desirable that the device be operated directly by a worker on the workbench.

As explained above, according to the present invention, the following excellent effects are exhibited.

Effects of the Invention (1) Since the base is removably fitted to the mounting member provided in advance on the side surface of the bridge, it can be easily mounted and removed, improving workability.

(2) By simply providing a mounting member on the side surface of the bridge in advance, inspection and repair can be easily carried out over the entire bottom surface of the bridge.

(3) If there is a sidewalk on the bridge that does not obstruct vehicular traffic, the base can be temporarily installed there, thereby eliminating the need for attachment members to the side of the bridge.

(4) Since the work inspection means is attached to the side of the bridge via the third arm, second arm, and base,
In addition to its simple structure, it does not obstruct traffic on the bridge.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the present invention,
Figure 1 is a perspective view of the bridge viewed diagonally from below, Figure 2 is a sectional view, Figure 3 is a front view of the base, Figure 4 is a side view showing the joint of the 2.5 arms, and Figure 5. Figure 3, Figure 7, and Figure 8 are perspective views showing another example of the work inspection means, and Figures 3, 7, and 8 show examples in which the device is attached to a base temporarily installed on a sidewalk on a bridge, etc. Figure 3 is a perspective view of the bridge from diagonally below, Figure 7 is a sectional view, and Figure 8 is a side view.
...Mounting member, 2...Bridge girder, 6...
...gIi leg, 4...a beam, 5...
Base, 8...1st arm, 10...
Second arm, 11...Third arm, 15...
...Work inspection means Figure 4 Figure 5

Claims (1)

[Claims] A base is removably attached to a mounting member provided in advance on the side of the bridge, or the base is temporarily installed on a sidewalk on the bridge, and a first arm is rotatably provided on the base, and the first arm is attached to the first arm. A bridge maintenance device characterized in that a second arm is provided to be extendable and retractable in the axial direction of the second arm, a third arm is provided to be rotatable on the second arm, and a work inspection means is provided on the third arm.