JPH0445440B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a bridge repair work cart that is convenient for use in bridge repair work.

(Prior art) Traditionally, temporary scaffolding was constructed to perform bridge repair work, but assembling and dismantling this temporary scaffolding not only required a lot of time and labor, but also required a large amount of materials. However, there was a problem in that the cost also increased.

(Purpose) The present invention was made in order to solve the above-mentioned problems, and by providing a bridge repair work trolley that can easily perform bridge repair work without using temporary scaffolding, it reduces the construction time of bridge repair work. In the past, the purpose of labor saving was to significantly shorten the time and reduce construction costs.

(Structure) In order to achieve the above-mentioned object, in the present invention,
A gate-shaped frame with telescopic legs is erected on a bogie that can run freely on the bridge surface, and these two sets of bogie devices are arranged in parallel at an appropriate interval, and the gate-shaped frame is The upper ends are integrally connected by a horizontal beam, and telescopic arms are pivotally supported at both ends of the horizontal beam so that the phase with respect to the horizontal rod can be freely adjusted, and a telescopic workbench is attached to the lower end of this arm. The horizontal beam of the work cart is horizontally mounted on the upper end of a center lift that is set up in the center of the loading platform of an equipment transport vehicle so that it can be raised and lowered and rotated freely. A work trolley for bridge repair is configured so that it can be placed on the ground.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings. In the figure, 1 is the bridge girder, 2 is the deck slab, 2a is the roadway that is the bridge surface, 2b is the sidewalk, 3 is the handrail, and 4
is a lighting pillar. Further, 5 is a vehicle for transporting the apparatus of the present invention, 5a is a loading platform thereof, and 6 is a hydraulic center lift installed in the center of the loading platform 5a so as to be able to rise and fall and turn freely.

In this embodiment, as shown in detail in FIG.
It is provided so that it can be steered via a rotatable bracket 10 relative to the frame 7. A steering cylinder 11 is interposed between the bracket 10 and the frame 7.

Further, wheels 12 are provided at the rear of the truck frame 7 via brackets 13 fixed to the frame 7,
Rotation can be driven via a traveling hydraulic motor 14 and a transmission device 15.

Furthermore, both legs 16a of the gate-shaped frame 16 are made extendable and retractable by hydraulic cylinders, and both leg ends 16b of this gate-shaped frame 16 are fixed on the bogie frame 7, and these two sets of bogie devices are arranged at an appropriate distance (bridge). The gate-shaped frames 16 are arranged in parallel with an interval corresponding to the width of the surface, and the upper ends of the gate-shaped frames 16 are integrally connected by a horizontal beam 17. In this embodiment, as shown in FIGS. 5 to 7, the horizontal beam 17 is constructed by connecting two parallel beams together by a connecting member (cross member) 17a. Also, the second
16c and 16d shown in Figures 6 and 7 are gate-shaped frames 1
The reinforcing material provided inside 6, 18 in FIG. 4 is a reinforcing plate provided at the intersection of the gate-shaped frame 16 and the horizontal beam 17.

Further, brackets 19 are provided protruding from both ends of the horizontal beam 17, and a telescopic arm 21 is rotatably supported on the brackets 19 via a pivot pin 20, and the gate-shaped frame 16 and the arm 21 are connected to each other. A hydraulic cylinder 22 is interposed therebetween, so that the intersection angle between the horizontal beam 17 and the arm 21 can be freely adjusted by expanding and contracting the hydraulic cylinder 22.

Further, as shown in detail in FIG. 9, a bearing 23 is provided protruding from the lower end portion 21a of the arm 21.
supports a horizontal shaft 24, and fixes the base of an extendable workbench 25 to this horizontal shaft 24,
By enabling the horizontal shaft 24 to be rotated by the hydraulic motor 26, stopped at a desired phase, and held, the intersecting angle of the workbench 25 with respect to the arm 21 can be freely adjusted.

Although the arm 21 and the workbench 25 are shown as being of a two-stage extendable type, FIG. 10 shows an example of the hydraulic cylinder device.

In other words, in this case, two hydraulic cylinders 2
7 and 28 are combined and fixed to the intermediate member B via the pin 29, the tip of the piston rod 27a of the hydraulic cylinder 27 is fixed to the base member A by the pin 30, and the tip of the piston rod 28a of the hydraulic cylinder 28 is fixed to the base member A by the pin 30. The portion is fixed to the tip member C with a pin 31. Note that 32 is a guide roller rotatably provided on a bracket 33 protruding from the hydraulic cylinder 27 via a shaft 34.

If configured as described above, the hydraulic cylinder 27,
The arm 21 or the workbench 25 can be extended or contracted in two stages by the extension/retraction operation 28.

FIGS. 11 to 13 show modified examples of the apparatus of the present invention, and in the figures, the same reference numerals as those described above indicate equivalent parts.

That is, in this case, both legs of the gate-shaped frame 16 are of a two-stage extendable type, and horizontal rods 35 that extend and contract along the horizontal beam 17 are added to both sides of the horizontal beam 17, and the outer ends of the horizontal rods 35 are This embodiment differs from the previous embodiment in that the base of the telescopic arm 21 is fixed vertically, and the working table 25 is of a three-stage extendable type.

(Operation) Next, the operation of the apparatus of the present invention configured as described above will be explained.

First, in order to transport the device of the present invention to the site, the first
As shown in FIGS. 1 and 2, with the hydraulic cylinder 22 extended so that the arms 21 at both ends of the horizontal beam 17 are in a straight line with the horizontal beam 17,
The center portion of the horizontal beam 17 is placed on the center lift 6 installed on the loading platform 5a of the vehicle 5 and transported to the site.

When the vehicle 5 reaches a bridge to perform repair work, the vehicle 5 is stopped on the bridge, the center lift 6 is extended, and the vehicle is rotated approximately 90 degrees as shown in Figure 3. After retracting the center lift 6 and installing the wheels 8 and 12 of the truck 7 on the bridge surface 2a, both legs 16a of the gate-shaped frame 16 are extended to completely raise the device of the present invention on the bridge surface 2a. Then, the vehicle 5 is moved and the device of the present invention is separated from the vehicle 5.

Next, as shown in the diagram on the right side of FIG. 4, the hydraulic cylinder 22 is retracted to direct the tip of the arm 21 diagonally downward, and then the arm 21 is extended as shown in the diagram on the left side, and then the hydraulic motor 26 is turned on. After driving and rotating the workbench 25 in the direction of arrow D, the workbench 25
Stretch horizontally.

In this way, the horizontal workbench 25 can be easily installed at an appropriate interval below the bridge girder 1, so that the workbench 25 can be used to, for example, use an automatic painting machine (not shown). ) can be installed, and repair work can be carried out using this workbench 25 as a scaffold. As the repair work progresses, the wheels 12 of the truck 7 are driven to rotate by the hydraulic motor 14, and the steering wheels 8 are properly steered via the hydraulic cylinder 11. Since it can run on its own, repair work can be carried out extremely efficiently.

Note that even if the lighting pillar 4 or the bridge pier (not shown) becomes an obstacle when moving the device of the present invention, the arm 21 and workbench 25 of the device of the present invention can be freely operated as described above, so there is no obstruction. This can also be avoided very easily and in a short time.

Furthermore, when the repair work is completed, by performing the above operating procedure in reverse, the device of the present invention can be placed on the loading platform 5a of the vehicle 5 and transported easily and quickly to a desired location.

In the case of the embodiment shown in FIGS. 11 to 13, after the device of the present invention is installed on the bridge surface 2a, the horizontal rods 35 are first extended outward, and then the vertical arms 21 are extended downward. Then, after rotating the workbench 25 in the direction of arrow E in Fig. 11,
The workbench 25 may be extended below the bridge girder 1 in the direction of arrow F.

(Effects) Since the apparatus of the present invention is as described above, the following excellent effects can be obtained.

(1) According to the device of the present invention, it is possible to easily and quickly form a scaffold for repair work without the need for temporary scaffolding as in the past, and this scaffolding can be moved along the bridge. Therefore, the construction period for bridge repair work can be significantly shortened, and by promoting labor saving, construction costs can be significantly reduced.

(2) It is also convenient when moving because it allows you to easily avoid obstacles such as bridge piers and lighting poles.

(3) Since the device of the present invention is installed in a gate shape so as to straddle the road, it does not obstruct road traffic during repair work, and construction materials can also be placed on top of the horizontal beam. Because it can be done, it is less likely to get in the way.

(4) The device of the present invention is transported on a general road to a work site by a device transport vehicle having a center lift installed in the center of the loading platform, and the bridge repair work vehicle is easily and easily accessible from the vehicle at the site. The scope of work is extremely wide because it can be lowered onto the street.

[Brief explanation of drawings]

Fig. 1 is a side view showing the device of the present invention mounted on a vehicle, Fig. 2 is a rear view, Fig. 3 is a view of the device of the present invention lifted and turned 90 degrees, and Fig. 4
The figure is a front view showing the operation of forming a scaffold by placing the device of the present invention on a bridge surface, FIG. 5 is a plan view thereof, and FIG.
The figures are the left side view of Fig. 4, Fig. 7 is the right side view of the same, Fig. 8a is a side view of the trolley device, Fig. 8b is its front view, and Fig. 9 is the connection part between the arm and the workbench. FIG. 10 is a cross-sectional view showing the arm and workbench telescoping device, FIG. 11 is a front view showing another embodiment of the present invention, FIG. 12 is a left side view thereof, and FIG. It is a right side view of the same. 1... Bridge girder, 2... Floor slab, 2a... Roadway (bridge surface), 2b... Sidewalk (bridge surface), 4... Lighting column, 5...
... Vehicle, 5a ... Loading platform, 6 ... Hydraulic center lift, 7 ... Dolly frame, 8, 12 ... Wheels, 1
6... Gate-shaped frame, 16a... Both legs, 17...
...Horizontal beam, 21 ... Telescopic arm, 22 ... Hydraulic cylinder, 23 ... Bearing, 24 ... Horizontal shaft, 25 ...
...Telescopic workbench, 26...Hydraulic motor, 35...Horizontal rod.

Claims (1)

[Claims] 1 A gate-shaped frame with telescopic legs is erected on a bogie that can run freely on the bridge surface, and these two sets of bogie devices are arranged in parallel at an appropriate interval, and the gate-shaped frame is The upper end of the frame is integrally connected by a horizontal beam, and telescoping arms are pivotally supported at both ends of this horizontal beam, so that the phase with respect to the horizontal beam can be adjusted freely, and the lower end of this arm is retractable. A work platform is constructed by adjusting the intersecting angle of the work platform to the arm, and the horizontal beam of the work platform is horizontally attached to the upper end of a center lift that is erected in the center of the platform of the equipment transport vehicle so that it can be raised and lowered and rotated freely. A work trolley for bridge repair, characterized in that it can be placed on.