JPH09209312A - Bridge erecting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To wholly mechanically perform insert of a plane material into the erecting position by insertedly fitting a female type insert part provided on the rear end of a traveling rail to a male/female type fitted part provided on the front end of a fixed rail so as to almost connect together both rails, and thereafter operating a regulating device. SOLUTION: A plane material 6b is fitted to a traveling trolley 16 on a suspending beam 15, and hoisted through the suspending beam 15. This suspending beam 15 is inserted between front and rear cut-off ends provided in the middle position of a fixed rail 13, an additionally provided subsidiary rail is connected to the fixed rail 13 through a subsidiary rail connecting mechanism, then the traveling trolley is transferred from the subsidiary rail to the fixed rail 13 and run, and the plane material 6b is carried to the extreme end of a truss girder 6. A screw jack internally mounted on the extreme end of the truss girder 3 is operated so as to bring down a movable rail 14, a female type inserting part provided on the movable rail 14 is insertedly fitted to a male/female type fitted part provided on the fixed rail 13 side, and then the space of the movable rail 14 against the fixed rail 13 and dislocation in the width direction are respectively finely regulated and they are fixed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bridge overhanging apparatus, and more particularly, to a bridge erection apparatus for use in a place with little flat land such as mountains.

[0002]

2. Description of the Related Art A bridge overhanging construction conventionally performed in a place where there is little flat land in the mountains is shown in FIG. 9 (A) side view and FIG. 9 (B).
A plan view will be described. As shown in the figure, first, a pier 1 and a temporary work vent 2'for construction are constructed on a sloping ground, a truss girder 6 is erected above the pier 1, and a tower crane 3 is erected in the vicinity of the pier 1. Then, the single material 6a of the truss girder carried on the pier 4 by the transport truck 5 is lifted by the tower crane 3, and this is transported by the carriage 8 on the truss girder 6 to the vicinity of the traveler crane 7, and the traveler crane 7 The single material 6a on the dolly 8 is lifted one by one and transported to a predetermined position, and the worker on standby waits for this single material 6a.
After positioning and mounting a, and completing the installation of one span of the truss girder 6 in this way, move the traveler crane 7 to 1
The span is moved to the next erection point on the tip side, and the truss girder is extended by repeating this single material mounting operation for each span in the same manner.

[0003]

However, in the above-mentioned conventional construction method, for example, a truss girder under construction of heavy construction equipment such as a traveler crane 7 having a self-weight of 50 tons or a plurality of carriages 8 having a scale of 10 tons. Since the truss girders are installed on the 6 and moved, the existing truss girders 6 must be supported by providing temporary vents 2'or the like at short intervals, or the truss girders themselves must be reinforced by the oblique vents 2. Moreover, since the single materials 6a are aligned one by one by the work at a high place and joined to assemble the truss girder 6, the efficiency is poor and the construction period becomes long.
Further, since the members are hoisted and rotated by the traveler crane 7, there are various problems such as a great danger on a windy day or rain and it is not possible to work, and because the traveler crane body is heavy, it takes time to install and dismantle it. is there.

The present invention has been proposed in view of the above circumstances, and is economical in that it is possible to perform a safe and quick erection operation even in strong winds, rain, etc. without using a heavy-duty traveler crane. The purpose of the present invention is to provide a bridge construction device.

[0005]

In order to achieve such an object, the invention of claim 1 is provided on an existing truss girder by hoisting a face material being erected by a tower crane provided near the pier. In a bridge erection device that is transferred to a conveyance device that travels on a fixed rail and conveyed, and the same surface material is sequentially added to an existing truss girder to perform erection, an upright truss frame body that has a rectangular cross section and extends in the front-rear direction, It consists of a traverse rail suspended up and down in the same frame, a traverse trolley mounted transversely on the traverse rail, and a front-rear moving rail supported by the traverse trolley. A movably mounted erection machine, an insertion part installed at the rear end of the movable rail, and a member that fits into the insertion part. Between the attachment part, the insertion part and the insertion part Characterized in that comprises a moving rail connection mechanism for aligning the moving rail wearing state for the fixed rail consists preparation device for fine adjustment.

According to a second aspect of the present invention, in the first aspect, stoppers for preventing runaway of the transfer device are provided at the ends of the fixed rail and the movable rail, respectively.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described with reference to the drawings. FIG. 1 is an overall side view, FIG. 2 is a side view showing a mechanism for transferring a face material to a fixed rail in FIG. 1, and FIG. 2 is a cross-sectional view taken along the line III-III of FIG. 2, FIG. 4 is a side view of the moving rail connecting mechanism shown in FIG. 1, and FIGS. 5 and 6 are cross-sectional views taken along the line VV and VI-VI of FIG. 4, respectively. FIG. 7 is a detailed view showing a state before connection of the moving rail connection mechanism in FIG. 4, and FIG. 8 is a perspective view showing a state after connection of the moving rail connection mechanism in FIG.

First, as shown in FIGS. 1 to 3, the device of the present invention comprises a tower crane 3, a suspension beam 15, a traveling trolley 16, an erection machine 11, a fixed rail 13, and the like. The tower crane 3 is erected in the vicinity of the bridge pier 1 constructed by a separate method on a sloping ground, and the suspension beam 15 is suspended at the lower end of the wire 3a.
A pair of front and rear traveling trolleys 16 are movably mounted on the traveling trolley 16, and the traveling surface trolley 16 is used to hang up the surface material 6b which has been previously assembled by surface assembly. The fixed rail 13 is an existing truss girder 6 constructed on the pier 1.
The traveling trolley 16 is provided along the longitudinal direction of the suspension rail 15 in the front-rear direction and extends from the suspension beam 15 to the fixed rail 13.
You can transfer to and drive. The erection machine 11 can be moved on a guide rail (not shown) laid along the existing truss girder 6 by a moving device (not shown).

Next, as shown in FIGS. 4 to 6, the erection machine 11 is hung below the frame 11a by a pair of long and short screw jacks 19-a and 19-b. The short transverse rail 22 that is held is supported so that it can be raised and lowered,
A traverse trolley 20 is installed on the traverse rail 22 so that the traverse trolley 20 can freely traverse, and a long moving rail 14 in the front-rear direction is suspended from the traverse trolley 20.
Is connected to the tip of the fixed rail 13 at any time, and the traveling trolley 16 traveling on the fixed rail 13 is transferred to convey the face material 6b to the tip position of the truss girder 6.

7 to 8 show a moving rail connecting mechanism for connecting the moving rail 14 to the fixed rail 13.
First, as shown in FIG. 7, in the state immediately before the connection, the connection mechanism has a female insertion portion 29 installed at the rear end of the moving rail 14 and a truncated four-sided pyramid-shaped portion that expands downward. It has a quadrangular pyramid-shaped outer shape that can fit in the tapered hole 29b, and has a male-type inserted portion 30 protruding from the front end of the fixed rail 13 and a quadrangular corner installed on the inserted portion 30. A locked portion 30a having a weight shape, a locking claw 23a provided on the tip of the front-rear power cylinder 23 installed on the moving rail 14, and a tip of the power cylinder 24 installed on the moving rail 14. And a stopper 25 and 26 provided on the fixed rail 13 side and the movable rail 14 side, respectively.

In such a moving rail connecting mechanism,
By operating the screw jack 19 (FIG. 4) and lowering the moving rail 14 in the direction of the arrow, as shown in FIG. 8, the female insertion portion 29 is inserted and fitted to the male insertion receiving portion 30. The fixed rail 13 and the movable rail 14 can be roughly connected. At the same time, the locking claw 23a is locked at the same time.
After engaging with the angular projection 30b, the power cylinder 23 is contracted to pull the moving rail 14 toward the fixed rail 13 side to adjust the gap between the two, and then the power cylinder 24 is extended and the tip of the rod 27 thereof is extended. By inserting the parts into the through holes 29a and 30a of the insertion part and the insertion part, which are matched by the insertion, and correcting the displacement of the moving rail 14 with respect to the fixed rail 13 in the width direction, On the other hand, the moving rail 14 can be accurately connected.
The stoppers 25 and 26 are both fixed rails 13.
Of the traveling trolley 16 on the side of the movable rail 14 or on the side of the moving rail 14, the stopper 25 is provided with a protrusion 27a when the female insertion portion 29 is fitted to the male insertion portion 30.
Engages with the receiving portion 25a. Further, the stopper 26, when the rod 27 penetrates the through holes 29a and 30a, respectively,
By engaging the protrusions 27b with the receiving portions 26a, the traveling trolleys 16 that are respectively opened can travel.

The operation of the bridge erection device will be generally described below. First, as shown in FIG. 1, the traveling trolley 1 in which the face material 6 b carried on the ground is installed on the suspension beam 15
6 and operate the tower crane 3 to suspend the beam 1
Lift through 5. Then, as shown in FIGS. 2 to 3, the suspension beam 15 is inserted between the front and rear cutting ends aa provided at the intermediate position of the fixed rail 13, and the auxiliary rail 15a attached is connected to the auxiliary rail connecting mechanism. After connecting to the fixed rail 13 via (not shown), the traveling trolley 1
6 is transferred from the auxiliary rail 15a to the fixed rail 13 and is run to convey the face material 6b to the tip of the truss girder 6. On the other hand, as shown in FIG. 1, a erection machine 11 is installed at the tip of the truss girder 6, and the screw jack 1 having the interior is installed.
9-a and 19-b (FIG. 6) are actuated to lower the moving rail 14, and the female inserting portion 29 provided on the moving rail 14 side is provided with the male inserting portion 30 provided on the fixed rail 13 side. And roughly connect the both rails, and then operate the preparation device to finely adjust the gap between the movable rail 14 and the fixed rail 13 and the deviation in the width direction, thereby accurately aligning and connecting both rails. To do.

Thereafter, the traveling trolley 16 is fixed to the fixed rail 1
3 and transfer rail 14 to run, face material 6b
Is transported to the erection position. The face material 6b supported by the moving rails 14 carried into the erection position is moved together with the moving rails 14 by the traverse trolley 20 on the traverse rails 22 in the width direction of the bridge, and also by the screw jacks 19. After being raised (or lowered) together and positioned, they are assembled to the existing truss girder 6.
In this way, the traveling trolley 16 that has finished conveying the face material 6b is
Transferring from the moving rail 14 to the fixed rail 13, returning to its original position and preparing for the transportation of the next surface material, the erection machine 11 advances by one span on the truss girder to prepare for the assembly of the next surface material,
Hereinafter, the same procedure is repeated. In addition, if the traveling trolley 16 running on the fixed rail 13 or the moving rail 14 or stopped while the face material 6b is being transported, the stoppers 25 and 26 prevent the runaway.

[0014]

According to the bridge erection device of the present invention as described above, the erection machine is moved to the tip of the truss girder, the traverse rail is lowered by the screw jack installed therein, and the female type attachment provided at the rear end of the moving rail. After the section is inserted into the male insertion part provided at the front end of the fixed rail and both rails are roughly connected, the adjustment device is actuated to finely adjust the gap between the movable rail and the fixed rail in the width direction. Since the two rails can be accurately connected to each other, the traveling trolley can be transferred from the fixed rail to the movable rail and traveled to convey the face material to the erection position. This makes it possible to mechanically carry all the surface materials into the erection position, improving the efficiency of the erection work, and preventing the traveling trolley from running out of control by the stoppers provided on the fixed rail and the movable rail. It has the effect of eliminating accidents such as falls and improving safety.

In short, according to the first aspect of the invention, the surface material being erected is lifted by the tower crane provided in the vicinity of the bridge pier and transferred to the transfer device which runs on the fixed rail provided on the existing truss girder. In a bridge erection device that conveys and sequentially installs the same surface material to an existing truss girder, an upright truss frame having a rectangular cross section and extending in the front-rear direction, and a traverse suspended vertically in the frame. A rail, a traverse trolley mounted movably on the traverse rail, and a front-rear moving rail supported by the traverse trolley, and an erection machine movably mounted in the front-rear direction on the truss girder; An insertion part installed at the rear end of the rail and a member fitted to the insertion part, the insertion part protruding from the tip of the fixed rail, and the insertion part and the insertion part. From the preparation device that finely adjusts the fitting state with the part By using a moving rail connection mechanism that aligns the moving rail with respect to the fixed rail, safe and quick erection work can be performed even in strong winds or rain without using a heavy-duty traveler crane. The present invention is extremely industrially beneficial because it provides an economical bridge erection device that can be manufactured.

According to the invention of claim 2, claim 1
In addition, in addition to the effect according to claim 1, by preventing the runaway of the transport device from being installed at the end of the fixed rail and the end of the movable rail, the runaway of the running trolley can be prevented, and the runner can fall. The present invention is extremely useful in industry because it provides a highly safe labor-saving, labor-saving and economical bridge erection device that prevents the occurrence of the above accident.

[Brief description of drawings]

FIG. 1 is an overall side view showing a bridge construction device according to an embodiment of the present invention.

FIG. 2 is a side view of the same, showing a mechanism for transferring the face material in FIG. 1 to a fixed rail.

3 is a cross-sectional view taken along the line III-III of FIG.

4 is an overall side view showing a moving rail connecting mechanism in FIG. 1. FIG.

5 is a transverse cross-sectional view taken along the line VV of FIG.

6 is a transverse cross sectional view taken along the line VI-VI of FIG.

FIG. 7 is a detailed view showing a state before connection of the moving rail connection mechanism in FIG.

8 is a perspective view showing a state after the moving rail connecting mechanism in FIG. 4 is connected.

9 is an overall view showing a conventional bridge erection device, FIG. 9 (A) is a side view thereof, and FIG. 9 (B) is a plan view thereof.

[Explanation of symbols]

 1 bridge pier 3 tower crane 6 truss girder 6a face material 6b face material 11 erection machine 11a frame body 13 fixed rail 14 moving rail 15 suspension beam 15a auxiliary rail 16 traveling trolley 19-a screw jack (rod) 19-b screw jack ( Motor 20) Traverse trolley 22 Traverse rail 23,24 Power cylinder 23a Locking claw 25,26 Stopper 25a, 26a Receiving part 27 Rod 27a, 27b Protrusion 29 Female insertion part 29a, 30a Through hole 29b Inner hole 30 Male Mold Inserted part 30a Locked part 30b Square protrusion

Front page continuation (72) Inventor Shinji Nakatani 4-22 Kannon Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Prefecture Mitsubishi Heavy Industries Ltd. Hiroshima Works

Claims (2)

[Claims] 1. A tower crane installed near a bridge pier hoists the surface material being erected, transfers it to a transfer device that runs on a fixed rail installed on an existing truss girder, and transfers it. A bridge erection device that is added to a truss girder to erect, and has a rectangular cross section and extends in the front-rear direction. An upright truss frame, a traverse rail suspended up and down on the frame, and a traverse on the traverse rail. A trolley mounted on the truss, and a erection machine mounted on the truss girder movably in the front-rear direction, and an insertion machine installed at the rear end of the movement rail. A fitting part, a member fitted to the fitting part, and a fitted part protruding from the tip of the fixed rail, and a fitting state between the fitting part and the fitted part are finely adjusted. And a moving rail for the fixed rail. A bridge erection device comprising a moving rail connecting mechanism for aligning the rails. 2. The bridge erection device according to claim 1, wherein stoppers for preventing runaway of the transfer device are installed at the end of the fixed rail and the end of the movable rail, respectively.