JPS6365765B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a work vehicle used for inspection and repair of a suspension bridge main tower.

Conventional work vehicles require a total of four work vehicles, divided into the upper and lower parts of the tower bridge body, as well as the front and rear.In addition, in the past, each vehicle had its own dedicated vehicle for inspection of the main tower section, horizontal joints, and diagonal members. A work vehicle was considered.

The present invention solves these problems of the conventional working vehicle, makes it possible to repair and inspect each part of the main tower with only one working vehicle, and minimizes the number of accessories attached to the main tower body. This was proposed in order to provide an economical working vehicle for suspension bridge main towers that does not impair its appearance and does not impair its appearance. a guide rail, a rail for moving the above-ground part consisting of a pair of straight rails laid on the above-ground part connecting the front and rear tower legs of the main tower section, and a curved rail connecting the two straight rails; the above-mentioned lifting guide; an elevating pedestal mounted to be movable up and down along the rail and configured to run on the above-mentioned above-mentioned rail for moving above ground; A workbench support girder, a workbench moving dolly mounted on the workbench support girder so as to be movable in the longitudinal direction thereof, and a workbench moving dolly mounted on the workbench movable dolly so as to be movable in a direction perpendicular to the direction of movement thereof. The present invention relates to a work vehicle device for a suspension bridge main tower, which is characterized by comprising a work platform.

As described above, the suspension bridge main tower working vehicle according to the present invention is capable of moving the main tower to a lifting platform that is mounted so as to be able to rise and fall freely along the lifting guide rails arranged on the front and rear surfaces of the main tower section. A workbench support girder is mounted so as to be movable in the left and right direction of the section, and the workbench is mounted on a workbench moving trolley mounted on the workbench support girder so as to be movable in the longitudinal direction. Since it is movably mounted, repair and inspection of the front and rear surfaces of the main tower section can be performed by raising and lowering the elevating frame along the elevating guide rail.

In addition, the work platform support girder is extended in the horizontal direction toward the main tower section on which the lift frame is mounted, and the work platform support girder is extended toward the adjacent main tower side. By sequentially moving the work platform moving cart equipped with the work platform to the required position along the
Repairs and inspections can be made to diagonal members, horizontal members, etc. between the main towers that are adjacent to each other on the left and right.

Further, a work platform moving trolley is moved from the lifting platform to a required position on the work platform support girder projecting in the left-right direction of the main tower section, and the work platform is moved in a direction perpendicular to the moving direction of the trolley. This allows repair and inspection of both the left and right sides of the main tower section.

The work vehicle of the present invention can be raised and lowered across the bridge body by moving the work platform into and out of the work platform moving vehicle. There is no need to separate work vehicles.

In addition, in the present invention, a pair of straight rails connecting the front tower legs and the rear tower legs of both the left and right main tower sections,
A above-ground movement rail consisting of a curved rail connecting both straight rails is laid, and the elevating frame is configured to run on the same rail.
The elevating platform can be moved to either the front or rear of the left and right main tower sections, and can be moved up and down along the elevating guide rails on each of the front and rear surfaces of the left and right main tower sections, making it possible to use only one work vehicle. Repairs and inspections were carried out on the upper and lower parts of the bridge body, as well as the front and rear parts, making it possible to minimize the number of guide rails for work carts, thus minimizing the number of accessories attached to the main tower, and improving the appearance. It is economical without losing its beauty, etc.
The invention has many advantages.

The present invention will be described below with reference to the illustrated embodiments.

A is the main tower section on both the left and right sides. Straight rails 1a and 1b are laid between the front and rear parts of both tower legs, and a curved rail 1c is connected between both rails 1a and 1b. 1a, 1b, and 1c constitute a rail for moving above ground. (See Fig. 2) Also, one pair of lifting guide rails 2 are installed on both the front and rear surfaces of the main tower section A.

Reference numeral B designates an elevating frame, and a running wheel 3 that runs on the above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned above-mentioned rail 2 is attached to the lower end of an elevating pedestal. Guide rollers 5 that roll along the top are installed, and the rollers allow the work platform to move up and down smoothly along the rail 2, and also to hold the bending moment caused by the overhang of the workbench support girder, which will be described later. ing. (1st
(See Figure 0) A total of four hoisting machines 6 are disposed before and after the two main tower sections A, and the wire rope 7 that is wound and unwound by each hoisting machine 6 is wound around the main tower section A. After passing through the upper guide device, it is detachably connected to the hanging beam 8 of the elevating frame B.

The work platform support girder C is movable in a direction parallel to the front and rear surfaces of the main tower section A through a groove-shaped work platform support girder inclination adjustment device 9 fitted in a recess provided on the top surface of the elevating frame B. It is fitted. Furthermore, Figure 11 and Figure 1
Figure 2 shows the moving device for the work platform C, and the lifting platform B
A rack drive device 20 is installed inside the platform, a rack 21 is provided on the lower surface of the workbench support girder C, and the rack drive device 20 on the elevating platform B side is driven to be mounted on the platform B and meshed with the rack 21. By rotating the pinion 22, the workbench support girder C is moved.
Note that 24 in the figure is a guide roller attached to the elevating frame B side. The workbench support girder C is provided with an H-shaped guide girder 10 extending in the longitudinal direction on its front and rear edges, and a guide roller 11 attached to the workbench support girder inclination adjustment frame 9 rolls on the outer surface of the web. I am in touch with him freely. (Refer to Figure 8) As shown in Figures 13 and 14, the mounting part of the guide rail 2 for lifting on the side of the main tower part A is different from the lower part and the upper part, so that the lifting guide rail 2 is Since the guide rail 2 is not installed vertically, a function is required to adjust the work platform support girder C to a horizontal state between the lifting platform B and the work platform support girder C. When the workbench support girder C moves to the tip of the workbench support girder C, the workbench support girder C is deflected.In order to simultaneously perform these adjustments and corrections, the workbench support girder inclination adjustment device 9 is driven by a screw jack 25, etc. Adjustments are made by moving the cursor up and down. 26 in the figure is the same jack drive device.

Reference numeral D denotes a work platform moving trolley, on both sides of which are mounted rollers 12 and guide rollers 13 that roll along the flanges and webs of the guide girder 10;
By driving and rotating the roller 12 by a drive device (not shown), the workbench support beam C is moved in the longitudinal direction. (Refer to Fig. 8) Reference numeral E denotes a workbench that is arranged to be movable in a direction perpendicular to the movement direction of the workbench moving cart D, and H-shaped guide girders 13 are provided on both sides of the lower end of the workbench.
A work platform moving trolley D is attached to the flange and web of
A roller 14 and a guide roller 15 mounted on the roller 14 are in contact with each other, and the roller 14 is
By driving and rotating the workbench E, the workbench E is moved. (See Figure 6) Workbench E
A telescopic workbench E′ is fitted in the spacer.

Then, the wire rope 7 wound around the hoisting machine 6 is connected to the hanging beam 8 of the lifting pedestal B, and the hoisting machine 6 is operated to raise and lower the hoisting pedestal B, for example, on the front side of the left main tower section A. using the guide rail 2 as a guide to raise it to a predetermined position. At this time, the work platforms E and E' are retreated with respect to the work platform moving cart D to a position where they protrude on the side opposite to the main tower section A, so that they can be raised and lowered across the bridge body.

Therefore, the work platform support girder C is connected to the lifting platform B.
By extending the main tower part A on the right side and moving the work platform moving vehicle D along the support girder C,
Repairs and inspections were made to the left half of the diagonal member a horizontal connecting member between main tower sections A and A, and by extending work platforms E and E' to the rear side of main tower section A. The first half of the right side of main tower section A will be repaired and inspected. Also, by protruding the workbench support girder C to the left and extending the workbenches E and E', repair and inspection of the left front half of the main tower section A can be carried out.

The elevating frame B is suspended, the wire rope 7 is removed from the suspension beam 8, and the wire rope 7 is moved to the right main tower section A along the rail 1a, and the same operation as described above is performed. 1b, then moved to the left and right main tower sections A, and then repeating the same operations as described above.In this way, the entire main tower can be repaired and inspected using only one working vehicle.

Although the present invention has been described above with reference to embodiments, the present invention is of course not limited to such embodiments, and may be modified in various designs without departing from the spirit of the present invention. be.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of the working vehicle device for a suspension bridge main tower according to the present invention, FIG. 2 is a plan view of the tower base, and FIGS. 3 and 4 are a side view and a front view, respectively. Fig. 5 is an enlarged side view of the main part, Fig. 6 is an enlarged side view of the main part.
Figure 7 is an enlarged front view of the main part, Figure 8 is an enlarged view of the part shown in Figure 7, Figure 9 is an enlarged plan view of the main part, and Figure 10 is the enlarged front view of the main part. 11 and 12 are respectively a front view and a side view of the workbench moving device, and FIGS. 13 and 1 are enlarged views of the parts.
FIG. 4 is a front view and a side view, respectively, showing the operating status of the workbench support girder inclination adjustment device. A...Main tower section, B...Elevating frame, C...Work platform support girder, D...Work platform moving trolley, E, E'...Work platform, 1a, 1b...Straight rail, 1c...Curve Rail, 2... Guide rail for lifting.

Claims (1)

[Claims] 1 Elevating guide rails installed on the front and rear surfaces of the main tower sections on both the left and right sides, a pair of straight rails that connect the front and rear tower legs of the main tower section laid above the ground, and both straight rails. A above-ground moving rail consisting of a curved rail connecting between the above-ground parts, an elevating frame mounted so as to be able to rise and fall freely along the above-mentioned elevating guide rail, and configured to run on the above-ground moving rails; A work platform support girder mounted on the pedestal so as to be movable in the left and right direction of the main tower section, a work platform moving trolley mounted on the work platform support girder so as to be movable in the longitudinal direction thereof, and A work vehicle device for a suspension bridge main tower, comprising a work platform mounted on a work platform movable vehicle so as to be movable in a direction perpendicular to the direction of movement of the work platform.