JP2002332613A - Bridge removal working machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bridge removal working machine suspending concrete pieces on a bridge and having excellent stability. SOLUTION: In the bridge removal working machine 1, a plurality of shifters 5 are arranged horizontally and installed to a fixed number of longitudinal rails 12 mounted in the longitudinal direction to a device body 2 capable of traveling, cranes 3 are secured movably in the horizontal direction to one of a plurality of longitudinally fitted traverse rails 22 in the shifters 5, and the cranes 3 are moved in the horizontal direction among each shifter 5 by utilizing the empty traverse rails 22, to which the cranes 3 are not set up.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in a bridge removal operation in which a bridge is dismantled while being cut, and is moved to a predetermined position on the bridge in accordance with the dismantling position.
Therefore, the present invention relates to a bridge removing work machine that suspends a concrete piece of a bridge that has been cut and loads the concrete piece on a truck.

[0002]

2. Description of the Related Art In some cases, it is necessary to remove viaducts due to aging, erroneous business estimates, and the like. In such a case, since the bridge is passed through various places, it cannot be collapsed at once like a building, and the part to be removed must be cut down sequentially from the end. In such removal work,
The bridge is cut to a size that can be loaded on a transport truck, and the concrete pieces are loaded on a truck waiting under the bridge and sequentially discharged.

[0003] Therefore, in the work of removing the bridge, a crane for suspending the concrete pieces is required in order to load concrete pieces such as a bridge girder located at a high position on a lower truck. In addition, the crane must be able to move in accordance with the demolition position of the bridge that is retracted by breaking down. Therefore, for example, the use of a crane truck can be considered for removing the bridge. The crane truck is placed on the bridge girder, and when the bridge is removed, a wire is wrapped around the cut section via an anchor, and after cutting, the concrete piece is hung and loaded onto a truck. Then, the crane truck moves on the bridge girder so that the concrete piece can be always suspended at the work position at the tip of the bridge girder for cutting and breaking.

[0004]

However, a lane vehicle that is always on a bridge girder and works at a high position is susceptible to strong winds, and if it falls down, it is dangerous for the operator himself. Or, if there are buildings, roads, railway tracks, etc. in the vicinity, the influence on them is large. Therefore,
For the removal of bridges, which are high-altitude operations, it is necessary to use something that can be operated more stably, instead of crane trucks.

Accordingly, an object of the present invention is to provide a bridge removing work machine with good stability for suspending concrete pieces on the bridge.

[0006]

In the bridge removing work machine according to the present invention, a plurality of moving devices are mounted side by side on a predetermined number of front and rear rails provided in a front and rear direction with respect to a movable device main body. The moving device is one in which a lifting device is attached to one of a plurality of traversing rails provided before and after so as to be movable in the left-right direction, and uses an empty traversing rail without a lifting device attached. Then, the lifting device is characterized in that it can move between the moving devices in the left-right direction.

Therefore, according to the bridge removing work machine of the present invention,
The lifting device moves in the front-rear direction by moving the moving device on the front and rear rails, and itself can move the traversing rail of the moving device left and right. Therefore, the bridge removal work machine, the lifting device can move the concrete pieces suspended in the front and rear and left and right within a certain range of the front and rear rails, such a device equipped with a rail that horizontally moves the lifting device,
Since the height can be reduced, the stability is improved.

The following is a preferred embodiment of the bridge removing work machine according to the present invention. The device body has a frame structure, the plurality of front and rear rails in a front portion, and a self-propelled traveling device and an outrigger for stabilizing the device body in a rear portion, and the plurality of moving devices, Each moving device is mounted in a suspended state by hanging wheels on different front and rear rails, and is enabled to move along the front and rear rails by rotation of wheels by a motor, and the lifting device is traversed by the moving device. The vehicle is mounted in a suspended state with a wheel mounted on a rail, and is movable along the traversing rail by rotation of the wheel by a motor. Also, in the rear part of the device main body,
The weight must be mounted. Further, an anchor for supporting a reaction force is provided at a rear end of the apparatus main body.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a bridge removing work machine according to the present invention will be described below with reference to the drawings. 1 to 3 show simplified side views, plan views, and front views of a bridge removing work machine according to the present embodiment. The bridge removing work machine 1 has a hoist 3a, 3b, 3c, 3d (collectively) as a lifting device for suspending concrete pieces in front of a work machine main body 2 having a frame structure as shown in the figure. (Hereinafter referred to as "hoist 3"), and a traveling device 4 is provided at the rear portion so as to be movable.

The bridge removing work machine 1 is configured such that a front part where the hoist 3 moves is used as a work area, and each hoist 3 can move in this area forward, backward, left and right. That is, the overhanging beam 11 of the working machine body 2 has two
A total of eight front and rear rails 12 are provided in parallel, and a hoist moving device 5a, 5b,
5c, 5d (collectively referred to as "hoist moving device 5")
Are attached to the front and rear rails 12 so as to be movable in the front and rear direction.

As shown in FIG. 4, the hoist moving device 5 includes a pair of left and right suspended saddles 21 and 21 movable along the front and rear rails 12, and traverse rails 22a and 22 made of steel.
b (collectively referred to as “traversing rails 22”) is fixed back and forth, and the hoist 3 is movably attached to one of the traversing rails 22b. The suspended saddle 21 is U
Wheels are provided inside the character-shaped frame, and the wheels are hung on the front and rear rails 12 so as to be sandwiched inside and attached in a suspended state. And a pair of suspended saddles 2
Each of the motors 1 and 21 has a motor 23, which can rotate the wheels by driving the motor 23 to move in the front-rear direction along the front-rear rail 12.

On the other hand, the hoist 3 is mounted on the traversing rail 22 fixed under the hanging saddles 21 and 21 in the same manner with the wheels hung, and has a motor 24 for rotating the wheels. , Can be moved in the horizontal direction along the traversing rail 22. Accordingly, the hoist 3 can move in the front-rear direction along the front-rear rail 12 by operating the hoist moving device 5 and can move in the left-right lateral direction along the traversing rail 22 by operating the motor 24 itself. I have.

When the front and rear positions of the traversing rails 22 are aligned, the four hoist moving devices 5 arranged on the left and right are continuous with a slight gap between adjacent ones. For this reason, the specific hoist rails 22 are made continuous with each other in the horizontal direction, so that the hoist 3 can freely move in the left-right direction using the horizontal rail 22 of another hoist moving device 5.

Next, the bridge removing work machine 1 is shown in FIGS.
As shown in FIG.
Outriggers 6, 6, 6, and 6 for stabilizing the work are provided. This traveling device 4
A swing arm capable of swinging up and down is pivotally attached to an arm of a suspension bracket that is rotatably provided, and the swing arm constitutes a jack-up mechanism supported by a hydraulic cylinder. Accordingly, the working machine body 2 is lifted to be able to run by the extension operation of the hydraulic cylinder, and the tire is floated as shown by the contraction operation. Each traveling device 4 is provided with a hydraulic motor or the like, and is configured to be able to travel independently.

Further, the bridge removing work machine 1 controls the hydraulic pressure of the traveling device 4 and the electric control of the motor provided in the hoist 3 and the hoist moving device 5 by operating the driver's seat 7 or a pendant switch or the like, respectively. Controllable, a generator 8 for driving the motor and a hydraulic unit 9 for supplying hydraulic oil for operating a hydraulic cylinder and a hydraulic motor are arranged at the rear, respectively. Further, in the bridge removing work machine 1, a suspending work is carried out at a front portion, so that a weight 17 for balancing is placed on a rear portion, and a reaction force anchor 18 to be driven into a bridge girder 51 is provided at a rear end portion. Is provided.

Next, a bridge removing operation using the bridge removing machine 1 will be described. First, bridge removal work machine 1
Is assembled on the bridge girder 51 because of its large size. Then, a stable work state is prepared by moving on the bridge girder 51 and extending the outrigger 6 at a predetermined work position. In this embodiment, the bridge removal work machine 1 is designed corresponding to the bridge 50 to be removed, and the space before and after the outrigger 6 is matched with the space between the piers 52, so that the work is performed on the bridge girder 51. In this case, the work position is determined such that at least the outrigger 6 at the center position in the figure is located on the pier 52 as shown in FIG. At this time, the work space in the front part of the bridge removing work machine 1 where the hoist 3 can be moved is a range up to the pier 52 further forward where the outrigger 6 is installed.

Incidentally, the movement of the bridge removing work machine 1 is performed by traveling on the bridge girder 51 by the traveling device 4. In this case, the traveling device 4 is in a state in which the hydraulic cylinder is extended and the tire is in contact with the bridge girder 51, and the traveling device 4 is further extended so that the work implement body 2 is lifted and can travel. And traveling device 4
The bridge removing work machine 1 having moved on the bridge girder 51 stops at the above-mentioned position, and at that position the traveling device 4 contracts the hydraulic cylinder to lift the tire, and the outrigger 6
To support the entire bridge removal machine 1 and level out. Furthermore,
In the removal work, the suspension is carried out by the front hoist 3, so that the whole balance is added to the weight 17 so as not to tilt forward, and the reaction force anchor 18 is driven into the bridge girder 51 at the work position.

As shown in FIGS. 1 and 3, a carry-out truck 60 stands by under the bridge 50, and the cut-out concrete pieces of the bridge 50 are placed thereon and sequentially carried out. Since the unloading must be performed within a range not exceeding the loading weight of the unloading truck 60, the bridge 50 is cut to an appropriate size, and the concrete pieces are removed from the bridge removing work machine 1.
Will be piled up.

In order to remove the bridge girder 51 as shown in FIGS. 1 and 3, for example, a suspension anchor is driven into the cut end of the bridge girder, and the four hoists 3 are attached to the ends of the hoisting ropes. A wire is hooked on the attached hook 25 (see FIG. 4). After that, it is divided into four parts by a wire saw or the like.
The concrete pieces are cut out to a width of about and are sequentially loaded on the unloading truck 60. Loading of the concrete pieces onto the unloading truck 60 is performed by moving the hoist 3 as follows.

First, as shown in FIG. 5, the concrete piece suspended there is lowered by the hoist 3b immediately above the stopped delivery truck 60 and loaded on the delivery truck 60. At that time, the front and rear positions of the hoist 3 are adjusted by the hoist moving device 5. That is, the hoist moving device 5b drives the motor 23 (see FIG. 4) of the suspension saddle 21 to move the front and rear rails 12 forward as shown in FIG. 6, and carries out the concrete pieces suspended on the hoist 3b. The loading position on the truck 60 is adjusted. Then, the hoisting rope of the hoist 3 was sent out,
The suspended concrete pieces are unloaded to the loading platform of the unloading truck 60 and loaded. Usually, one concrete piece is loaded on one truck and carried out.

Next, the concrete piece suspended by the hoist 3a moves to the hoist moving device 5b of the hoist 3b, from which the concrete piece is lowered and loaded. The descending position of the concrete piece is adjusted to the unloading truck 60. For this purpose, first, the hoist 3b loaded with the concrete pieces on the unloading truck 60 is retreated again to the position shown in FIG. 3, and the left and right positions are aligned with the other hoist moving devices 5.

As shown in FIG. 4, the hoist moving device 5 is in a state where the front transverse rail 22b of the two front and rear rails is empty. Therefore, when the unloading truck 60 is stopped at the position shown in FIG. 3, the concrete piece suspended by the hoist 3a is moved by the hoist 3a to the empty traversing rail 22b of the hoist moving device 5b and unloaded. It is located above the track 60.

Therefore, first, the hoist moving device 5a moves forward with the suspended saddle 21 moving on the front and rear rails 12 as shown in FIG. 8, and the traversing rail 22a of the hoist moving device 5a.
To the free traversing rail 22b of the hoist moving device 5b. As a result, the hoist 3a moves along the continuous traverse rails 22a, 22b between the hoist moving devices 5a, 5b, and moves to the hoist moving device 5b, as shown in FIG. Are located on the unloading truck 60.

Then, the loading position on the unloading truck 60 is adjusted by further moving the hoist moving device 5b in the front-rear direction, and the concrete piece descends by sending out the hoisting rope of the hoist 3a and is loaded on the loading platform of the unloading truck 60. After loading the concrete pieces, the positions of the traversing rails 22a and 22b are again overlapped, and the hoist 3
a is returned to the hoist moving device 5a. Further, when loading concrete pieces suspended on the hoists 3c and 3d, the same operation is repeated with a symmetrical movement as in the case of the hoists 3a and 3b.

As described above, the four hoists 3 are moved forward and backward in the area where the front and rear rails 12 are provided, in which the hoist moving device 5 can move, by the movement of the hoist moving device 5 and the movement between the traverse rails 22 of the hoist 3 itself. It is possible to move freely left and right. Therefore, once the bridge removal work machine 1 is installed as shown in FIG. 1, the bridge girder 51 and the pier 52 can be removed in a range up to the outrigger 6 (left side in FIG. 1) located in front of the bridge removal work machine 1. it can.

Therefore, when the bridge removing work machine 1 is fixed and the bridge girder 51 is to be removed within a certain range, the hoist moving device 5 is retracted stepwise in accordance with the longitudinal cutting width of the concrete piece to be cut out. As described above, the hoist 3 moves in the horizontal direction between the hoist moving devices 5, and the concrete pieces are loaded on the unloading truck 60. At this time, even if there is a building or the like under the bridge girder 51 and the unloading truck 60 cannot enter below the cutting position, the hoist moving device 5 is moved to the tip portion of the bridge removing work machine 1 to lower the cut concrete pieces. Loading takes place where possible.

When the pier 52 is to be removed in addition to the bridge girder 51, a predetermined hoist 3 suspends the concrete piece from which the pier 52 or the beam 53 has been cut as shown in FIG. Moves right and left between the hoist moving devices 5 to adjust the lowered position, and the suspended concrete pieces are loaded on the unloading truck 60.

Therefore, according to the bridge removing work machine 1 of the present embodiment, the hoist 3 is horizontally moved to the front, rear, left and right.
1 has a good stability to work on. Further, since the work area in which the hoist 3 can be moved is wide, it is possible to perform the removal work over a certain range without moving the bridge removal work machine 1, so that the unloading truck 60 cannot enter under the bridge girder 51. Even in a place, the concrete piece can be moved to an appropriate position and loaded, so that work can be performed efficiently and safely.

Further, since the four hoists 3 are provided in accordance with the number of concrete pieces divided in the width direction of the bridge girder 51, cutting from loading to loading into the unloading truck 60 is performed as a series of operations for each row. Work efficiency is also good in this regard. In addition, a bridge girder 5 having a traveling device 4 is provided.
1, the bridge removal work machine 1 can be moved smoothly.

As described above, the bridge removing work machine according to the present invention has been described with reference to one embodiment, but the present invention is not limited to this, and various changes can be made without departing from the gist of the present invention. For example, in the above-described embodiment, the hoist moving device 5 is provided with two rows of traversing rails in front and rear, but may be three or more rows.

[0031]

According to the present invention, a plurality of moving devices are mounted side by side on a predetermined number of front and rear rails provided in the front and rear direction with respect to the main body which can travel, and the moving devices are provided in front and rear. A lifting device is attached to one of the plurality of traversing rails so as to be movable in the left-right direction, and the lifting device is attached to one of the moving devices by using an empty traversing rail to which no lifting device is attached. Since the space between the bridges can be moved in the left-right direction, it is possible to provide a stable bridge removing machine capable of suspending concrete pieces on the bridge.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of a bridge removing work machine.

FIG. 2 is a plan view showing an embodiment of a bridge removing work machine.

FIG. 3 is a front view showing an embodiment of a bridge removing work machine.

FIG. 4 is a perspective view showing a hoist and a hoist moving device.

FIG. 5 is a front view showing a removal work of a bridge girder part by a bridge removal work machine.

6 is a plan view showing a part of the bridge removing work machine according to the work state shown in FIG. 5;

FIG. 7 is a front view showing a removal work of a bridge girder part by a bridge removal work machine.

8 is a plan view showing a part of the bridge removing work machine according to the work state shown in FIG. 7;

FIG. 9 is a front view showing one working state by the bridge removing work machine.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Bridge removal work machine 3 Hoist 4 Traveling device 5 Hoist moving device 6 Outrigger 12 Front and rear rail 17 Weight 18 Reaction force anchor 22 Crossing rail

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) B66C 15/00 B66C 15/00 Z F term (reference) 2D059 BB37 BB39 DD02 GG41 3F202 AA05 AC08 3F203 AA10 BA01 CA02 CB04 CC01 DA06 EA01 FA01 3F204 AA03 BA02 CA05

Claims (4)

[Claims] 1. A plurality of moving devices are mounted side by side on a predetermined number of front and rear rails provided in a front and rear direction with respect to a main body of a traveling device, and the moving devices are provided with a plurality of traversing rails provided in front and behind. In one of the above, a lifting device is mounted so as to be movable in the left-right direction. A bridge removal work machine characterized in that it can be moved to a bridge. 2. The bridge removal work machine according to claim 1, wherein the device body has a frame structure, and the front and rear rails are provided at a front portion, and a self-propelled traveling device and a device body are provided at a rear portion. The plurality of moving devices are mounted in a suspended state by hanging wheels on different front and rear rails, and the plurality of moving devices can move along the front and rear rails by rotation of wheels by a motor. The lifting device is mounted in a suspended state by hanging a wheel on a traversing rail of the moving device, and is capable of moving along the traversing rail by rotation of a wheel by a motor. A bridge removal work machine characterized by the following. 3. The bridge removing work machine according to claim 1, wherein a weight is mounted on a rear portion of the apparatus main body. 4. The bridge removing machine according to claim 1, further comprising an anchor for supporting a reaction force at a rear end of the device body. .