JPH0129926B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bridge inspection vehicle for long bridges, and more particularly to an inspection vehicle that runs on the side and bottom surfaces of bridges and is capable of maintenance control not only on the outside of the bridge but also on the inside of the bridge.

In general, it is common knowledge that long bridges such as crossing bridges are equipped with bridge inspection vehicles for inspecting the condition of the bridge, painting the bridge, and repairing the structure (hereinafter referred to as maintenance work). .

Conventionally, there are bridge inspection vehicles such as those shown in FIGS. 1 and 2, for example.

This bridge inspection vehicle 1 is composed of three inspection vehicles: side inspection vehicles 3, 3 disposed on both sides of the bridge 2, and a bottom inspection vehicle 4 disposed on the lower surface of the bridge 2.

The side inspection vehicle 3 has a main body portion 3A formed in a substantially columnar shape, and its upper and lower portions protrude slightly from the upper and lower surfaces of the bridge 2, respectively.

Then, it travels in the longitudinal direction of the long bridge 7 along rails (tracks) 6A and 6B laid on the top and side surfaces of the bridge 2 via running wheels 5A and 5B provided on the upper and lower sides of the main body 3A ( (self-propelled) possible to be suspended.

In other words, the running wheel 5A provided at the top is a drive wheel with a built-in hydraulic motor, and the running wheel 5A provided at the bottom is a drive wheel with a built-in hydraulic motor.
B is a so-called steady rest wheel.

On the other hand, the bottom inspection vehicle 4 has its main body 4A connected to the bridge 2.
It is formed into a substantially box shape that is long in the width direction, and its both ends are inserted into the lower part of the side inspection vehicle 3 and freely connected to the two rails 6C and 6C laid on the lower surface of the bridge 2. Engaged running wheels 5C, 5
C, it is similarly suspended in the longitudinal direction of the long bridge 7 so that it can run.

This lower surface inspection vehicle 4 is connected to the side surface inspection vehicle 3 via a ramp 8, which will be described later.
Maintenance work on the lower surface of the bridge 2 can be performed from above.

The ramp 8 is further extended along the main body 3A of the side inspection vehicle 3 to the top, with a plurality of landings 8A disposed at predetermined intervals along the way.

Therefore, a worker or the like can easily board the side inspection vehicle 3 from the top surface (road) of the bridge 2 using a simple connecting bridge (not shown), and the worker or the like who has boarded the vehicle can easily access the landing 8A. Maintenance work on the side surface of the bridge 2 can be performed through the bridge.

The side inspection vehicle 3 is further provided with a retractable telescopic boom 9 for internal maintenance work of the bridge 2.

This telescopic boom 9 has its boom cylinder 9A
The base end of the bridge 2 is attached to the main body 3A of the side inspection vehicle 3.
It is connected to a bracket 11 protruding from a lifter 10 which is housed so as to be movable in the height direction of the lifter 10 through a cylinder built into the bracket 11 (not shown) so as to be freely rotatable (rotable) in the horizontal direction. Boom 9B that extends and contracts with respect to this boom cylinder 9A
It has a work cage 12 at its tip.

Further, the base end portion of the bracket 11 is connected to the inside of the lifter 10 via a cylinder (not shown) so as to be freely rotatable in the vertical direction.

Therefore, as the bracket 11 rotates, the telescopic boom 9 integrally connected thereto also rotates (tilts) in the vertical direction.

At this time, the work cage 12 attached to the tip of the telescopic boom 9 is always held horizontally by a hydraulic cylinder or the like in response to the above-mentioned tilting operation.

During the work, the telescopic boom 9 makes sure that the work gauge 12 reaches a predetermined range inside the bridge 2 by its own telescoping operation, the above-mentioned rotation and tilting operations, and the vertical movement of the lifter 10. is set to

On the other hand, when storing, after fixing the lifter 10 at a predetermined position above, the boom 9B is retracted and rotated, and then tilted via the bracket 11, so that it can be folded short along the main body 3A. and are aligned in the traveling direction of the side inspection vehicle 3 as shown in FIG.

In the figure, 13 is a roadway formed on the top of the bridge 2, and 14 is a track laid inside the bridge 2, on which trains and the like run.

Because of this configuration, bridge 2 of the largest bridge 7
When performing maintenance work such as condition inspection, a worker first gets on the bridge inspection vehicle 1 (side inspection vehicle 3) at the aforementioned bridge inspection vehicle mooring position and moves the inspection vehicle 1 to a predetermined position.

At this time, the two side inspection vehicles 3 and the bottom inspection vehicle 4 run together, but the two side inspection vehicles 3
Even if there is a slight deviation in running, a stable running condition can be obtained because the lower surface inspection vehicle 4 is freely connected to the side surface inspection vehicle 3.

Furthermore, since the telescopic boom 9 and the work gauge 12 are stored as described above, running resistance is low and stable running is possible.

After stopping the inspection vehicle 1 at a predetermined position,
Maintenance work on both sides and the bottom of the bridge 2 is performed from the ramp 8 (landing 8A) of the side inspection vehicle 3 and the scaffolding provided on the bottom inspection vehicle 4.

On the other hand, inside the bridge 2, the side inspection vehicle 3
The work gauge 12 may be extended to a predetermined position by appropriately operating the telescopic boom 9 attached via the lifter 10. Of course, at this time, there are 2 in the work gauge 12.
There are about 10,000 workers on board.

As described above, this telescopic boom 9 is capable of extending and contracting the boom 9B as needed, and is also capable of rotating and tilting using the connection point with the lifter 10 as a fulcrum via a cylinder (not shown).
Since the work gauge 12 itself can be moved up and down, the work gauge 12 can be moved to any position while avoiding obstacles.

Therefore, by cooperating the two telescopic booms 9 from both of the two side inspection vehicles 3, it is possible to carry out comprehensive maintenance work inside the bridge 2.

When the maintenance work on the outside of the bridge 2 is completed in this way, the telescopic boom 9 is folded and aligned in the running direction of each side inspection vehicle 3 as described above, and then the bridge inspection vehicle 1 is driven. After moving the inspection vehicle to the mooring position of the bridge tower or abutment and unloading the workers, the inspection vehicle may be moored using a predetermined mooring means.

However, in the case of such conventional bridge inspection vehicles for long bridges, it is necessary to run the side inspection vehicle 3 along the side of the bridge 2 without being obstructed by suspension ropes, etc., especially in the suspension bridge type long bridge 7. For this reason, a track 6A (and 6B) was laid on the bridge 2, extending greatly from its side, and the side inspection vehicle 3 was suspended therefrom.

Therefore, when constructing the long span bridge 7, it takes a lot of labor and material costs to lay the track 6A for inspection vehicles, etc., which deviates from its original function, and the construction cost of the long span bridge 7 increases significantly. There was a problem with the increase.

Therefore, the present invention aims to solve the above-mentioned problems by providing a bridge inspection vehicle for long bridges that runs on the upper chord of the bridge as a track and does not require laying a track for the inspection vehicle to run on the bridge. purpose.

Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 3, a long bridge 7 connecting lands 16A and 16B across a strait 15 has been constructed, and a bridge inspection vehicle 1 for performing maintenance work on the bridge 2 of this long bridge 7 is located at the bridge tower section 17. , 17 and the inspection vehicle mooring positions provided on the bridge abutments 18, 18 are equipped with a predetermined number (four in the figure).

As shown in FIGS. 4 to 6, this bridge inspection vehicle 1 is arranged on both sides of a bridge 2, and its main body 3
A is arranged on the side inspection vehicles 3, 3 formed in a substantially columnar shape and on the lower surface of the bridge 2, and its main body 4A is formed in a substantially box shape long in the width direction of the bridge 2, and both ends thereof are used for side inspection. It is composed of a lower surface inspection wheel 4 which is inserted into the lower part of the wheels 3 and is freely coupled.

These side inspection vehicles 3, 3 and the lower surface inspection vehicle 4 which are freely coupled thereto are driven by running wheels 19A, 19B provided on the upper and lower parts of the main body 3A of the side inspection vehicles 3, 3.
It is suspended so that it can run (self-propelled) in the longitudinal direction of the long bridge 7.

In other words, the running wheels 19A provided at the top are drive wheels with built-in hydraulic motors, and the running wheels 19B provided at the bottom are so-called anti-sway wheels.

The running wheels 19A have the upper chord member 20 of the bridge 2 as a track, and are capable of rolling or de-wheeling with respect to the upper chord member 20 via a clamping means 21.

The clamping means 21 is a support member 2 of the running wheel 19A.
2, and consists of a hydraulic cylinder 23, a pair of links 24 that open and close left and right in FIG. configured.

Therefore, when the hydraulic cylinder 23 is actuated to the contraction side, the guide wheels 25 are opened to the left and right via the link 24, and the running wheels 19A are simply placed on the upper chord member 20, and can be taken off. When the guide wheel 25 is moved toward the extension side, the guide wheel 25 is closed toward the center via the link 24, and the both sides of the upper chord member 20 are sandwiched. It can roll over 20 degrees.

A plurality of running wheels 19A configured in this manner (four in the figure) are arranged at predetermined intervals along the upper chord member 20 extending in the longitudinal direction of the bridge 2, and
These running wheels 19A are independently and alternately
It is installed so that it can be stored outside the side of the bridge 2 with respect to the side inspection vehicle 3 or can be returned to the upper chord member 20.

In other words, each support member 22 of the running wheel 19A is rotatably coupled to a bracket 27 formed on the upper part of the main body 3A of the side inspection vehicle 3 in correspondence with the support member 22, and both of the above-mentioned 2
A bendable link 28 is interposed between 2 and 27 exactly in the middle, and at the bending point of this link 28,
A rod tip of a hydraulic cylinder 29 serving as a driving means whose base end is supported at a predetermined location of the main body 3A is connected.

Therefore, when the hydraulic cylinder 29 is actuated to the contraction side, the link 28 is bent inward, and the support member 22 is moved outward from the side of the bridge 2 around the connection point with the bracket 27. (At this time, the running wheels 19A are in a state where they can be taken off via the clamping means 21 as described above.) Therefore, the running wheels 19A are stored outside the so-called bridge 2.

Conversely, when operated on the extension side, the link 28 is held in a substantially straight line, and at the same time, the support member 22 is rotated toward the inside of the bridge 2, so the traveling wheel 19A is rolled onto the upper chord member 20. It will be restored to active status.

On the other hand, the running wheel 19B, which is a steady rest wheel,
It simply rolls on the side surface of the lower chord member 30 of the bridge 2. In this invention, the lower surface inspection vehicle 4, which is freely coupled to the side surface inspection vehicles 3, 3, is not particularly provided with running wheels.

Further, in the present invention, for internal maintenance of the bridge 2, a lifting platform 31 is provided which is movable in the longitudinal direction on the main body 4A of the bottom inspection vehicle 4. 6th
32 in the figure is its orbit.

It should be noted that instead of this lifting platform 31, the side inspection vehicle 3 may be provided with a telescoping boom 9 and a lifter 10 to which it is attached so that it can be rotated and tilted as shown in FIGS. 1 and 2. Not until now.

Since the other configurations are the same as those in FIGS. 1 and 2, the same members as in FIGS. 1 and 2 are denoted by the same reference numerals, and explanations thereof will be omitted.

Because of this structure, maintenance work on the outside of the bridge 2 is performed from the side inspection vehicles 3, 3, the bottom inspection vehicle 4, and the lifting platform 31, and the entire maintenance work is performed as in the conventional example. It is possible.

In this invention, the bridge inspection vehicle 1 uses the upper chord member 20 of the bridge 2 as a track, and can detach from the upper chord member 20 and store it outside the side of the bridge 2 or return to the upper chord member 20 as necessary. Multiple running wheels 1
Since it is possible to travel in the longitudinal direction of the long bridge 7 via 9A, there is no need to lay a track for the inspection vehicle on the bridge 2, and even if there is an obstacle such as a hanging rope on the upper chord 20. By skillfully overcoming these obstacles, the inspection vehicle can sequentially travel from the mooring positions provided on the bridge tower parts 17, 17 and the bridge abutments 18, 18 to any desired work position.

In other words, when the side inspection vehicles 3 and 3 travel simultaneously via the all-wheel drive running wheels 19A and reach an obstacle such as a hanging rope on the upper chord member 20, only the frontmost running wheels 19A and 19A As described above, the wheel is brought into a state where it can be taken off the wheel via the clamping means 21, and then stored outside the side of the bridge 2 via the link mechanism 28 and the like. In other words, the hydraulic cylinder 29 is operated to the contraction side.

In this state, the inspection vehicles 3, 3 are run via the rear running wheels 19A, 19A, and then the rear running wheels 19A, 19A (middle two running wheels in the figure) reach the hanging rope, etc. When this occurs, the frontmost running wheels 19A, 19A that have been stored above are moved to the upper chord 2 by operating the hydraulic cylinder 29 to the extension side.
0, and then the rear running wheels 19A, 19A are retracted as described above. At this time, the running wheels 19A, 1 which have returned to the upper chord member 20
9A is in a position where it has completely climbed over the hanging rope, etc.

In this state, the returned running wheels 19A, 19A
The inspection vehicle is driven by driving the rearmost running wheels 19A, 19A, and the rearmost running wheels 19A, 1 are driven.
When the wheel 9A reaches a hanging rope or the like, the rear (middle) running wheels 19A, 19A described above may be returned to their original positions, and then the rearmost running wheels 19A, 19A may be retracted.

In this way, the running wheels 19A, 19A are sequentially
By retracting or returning the inspection vehicle 3, the inspection vehicles 3, 3 run like so-called inchworms, and can successfully overcome obstacles on the upper chord member 20.

Of course, a dead point mechanism is employed in the above-mentioned running wheels 19A, 19A, so that even if the hydraulic pressure of the hydraulic cylinders 23, 29, etc. is lost, the predetermined lock mechanism will not come off. Furthermore, it goes without saying that a predetermined brake device is provided in order to fix the inspection vehicles 3, 3 in a predetermined position during work.

In this way, since the bridge inspection vehicle 1 is run using the upper chord 20 as a track, there is no need to particularly lay a track on the bridge 2, and the labor and material costs can be greatly reduced, and the construction cost of the long bridge 7 is low. become.

There is also the advantage that even existing long bridges that do not have the bridge inspection vehicle 1 can be easily equipped with the bridge inspection vehicle 1.

As explained above, according to the present invention, the bridge inspection vehicle is guided to the bridge by using the upper chord as a track and using a plurality of running wheels that can be disengaged from the upper chord and stored or returned to the upper chord. Since it is suspended so that it can travel in the longitudinal direction, there is no need to provide a track for the inspection vehicle on the bridge, and it is possible to provide an inexpensive and versatile bridge inspection vehicle for long bridges.

Further, in the present invention, the support member supporting the running wheels is retracted to the storage position by rotating in a plane substantially perpendicular to the running direction.
It is easy to operate when passing through suspension rope sections of bridges, etc., and the distance between each support member and wheel in the running direction (wheelbase) can be kept to the minimum necessary.
It is also advantageous in terms of strength and rigidity.

[Brief explanation of drawings]

1 and 2 are front and side views of the main parts of a conventional example, FIG. 3 is an overall side view of a long bridge equipped with an inspection vehicle according to the present invention, and FIGS. 4 to 6 are front views of main parts of the present invention. , side and plan views. 3...Side inspection vehicle, 4...Bottom inspection vehicle, 2...
Bridge, 1...Bridge inspection vehicle, 20...Top chord, 21
... Clamping means, 19A ... Traveling wheel, 3A ... Main body, 28 ... Link, 29 ... Hydraulic cylinder.

Claims (1)

[Claims] 1. In a bridge inspection vehicle for a long bridge, in which the inspection vehicle body is suspended so that it can travel in the longitudinal direction of the bridge, the top chord of the bridge is used as a track, and the running wheels that roll on this top chord are run along the top chord. A plurality of supporting members are provided at predetermined intervals, and each of the supporting members individually supports the running wheels. A driving means is provided for supporting the supporting members so as to be able to rotate outwardly and driving each supporting member independently and alternately to a position stored outside the side of the bridge or a position returned to the top chord. A bridge inspection vehicle for long bridges featuring: