JPS62260906A - Transport and assembling construction method of heavy panel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a construction method for consistently carrying out transportation and assembly of heavy panels for bridges, etc. whose surfaces have been roughened in advance.

[Background of the invention]

Conventionally, transporting and assembling heavy panels for bridges that cannot stand on their own has typically been carried out using separate means and methods. This conventional example will be explained with reference to FIGS. 14 to 18. It should be noted that this kind of bridge assembly work is not only carried out at the actual bridge construction site, but also in order to verify whether each heavy panel can be assembled correctly with respect to each other from a different temporary assembly position. is also carried out. The conventional example described below relates to temporary assembly performed for such verification.

First, as shown in Fig. 14, a heavy panel 1 for bridges whose surface has been roughened in advance is placed on a mounting base 2 to be mounted on a vehicle.
It is placed on its side. This mounting base is, for example, a heavy panel surface roughening yard or a heavy panel storage yard. The heavy panel 1 lying on its side is lifted up by the lifting machine 3 while lying on its side, and is mounted on the loading platform 5 of the heavy goods transport vehicle 4 (FIG. 15).

The container is transported in this state lying on its side (Fig. 16).

When it arrives near the assembly station, the heavy panel 1 is suspended from the loading platform 5 onto a temporary storage table by a large lifting machine 6.
Raise yourself up from lying on your side to an upright position. Then, it is further lifted up and moved to the assembly station, where centering work and assembly work are performed on the bridge 7 that is currently being assembled (Fig. 18).
.

[Problem that the invention seeks to solve]

However, in recent years, as the construction of long bridges has increased, the individual weight and dimensions of each heavy panel have increased, and therefore large lifting machines are required for both transportation and assembly work. ) Transportation and installation work are also becoming more complex, reducing work costs and efficiency.

It has a negative impact on safety. Problems like this.

This problem occurred not only when heavy panels were used for bridges, but also when used for offshore structures and steel towers.

The present invention consistently transports and assembles heavy panels,
To provide a method for transporting and assembling heavy panels that can reduce work costs and improve efficiency and safety by reducing work using large lifting machines, simplifying assembly work, and expanding the scope of ground work. With the goal.

[Means for solving problems]

The heavy panel transportation and assembly method of the present invention includes installing a gripping frame for holding the heavy panel in an upright state on a multi-axis heavy goods transportation vehicle that can move forward, backward, left, right, and diagonally, and that can move the loading platform up and down. As a result, once the heavy panel is placed upright on the vehicle's gripping frame using a lifting machine on the tower battlefield, the lifting machine can be dispensed with during transportation work and centering/assembly work at the assembly station. It is.

In other words, the multi-axle heavy goods transport vehicle used in the construction method of the present invention has each axle rotating in a horizontal plane, so that it can move forward and backward.
Can move left/right and diagonally.

Additionally, each axle can be moved up and down using hydraulic cylinders, allowing the loading platform to be raised and lowered. Further, the vehicle is provided with a gripping frame for gripping one weight panel in an upright state, and a sliding mechanism is provided between the gripped weight panel and the gripping frame or between the gripping frame and the loading platform of the vehicle, The weight panel can be slid back and forth and left and right with respect to the vehicle. The construction method of the present invention is performed using the above vehicle.

First, on the heavy panel tower battlefield, the heavy panels are loaded onto the vehicle by a lifting machine. The weight panel placed on the tower is held upright by the holding frame.

The heavy panel is transported in this upright position. Next, at the assembly station, centering work and assembly work are performed on a bridge or the like that is being assembled while the weight panel is held in an upright position. These tasks can be performed without using conventional lifting equipment. That is, by vertically moving the hydraulic cylinders of each axle of the vehicle, the loading platform is raised and lowered, and the vehicle is moved back and forth, left and right, and diagonally, and the weight panel is slid by the slide mechanism, and the centering is performed. Work and assembly work is carried out.

〔Example〕

(Schematic overall process) As shown in FIG. 2, the heavy panel 1 is prepared in a horizontal position on the mounting base 2 as in the conventional case. A large lifting machine 3 is used in this loading platform 2, and a multi-axle heavy goods transport vehicle (
At this time, the weight panel 1 is held in a vertical position, and a large lifting machine is no longer required.

In this vertical state, it is transported to an assembly station as shown in FIG. At the assembly station, as shown in FIG. 5, the heavy panels 1 are aligned perpendicularly to the bridge 7 that is being assembled, and the assembly work is carried out.

(Gripping frame installed in a multi-axle heavy goods transport vehicle) A grip frame 12 is installed on the loading platform 5 of the multi-axle heavy goods transport vehicle 11. A side view of this state is shown in FIG. 6, and a front view is shown in FIG. is shown in FIG. 7, and a plan view is shown in FIG. 8.

The gripping frame 12 includes an upright portion 13 for gripping the weight panel 1 in a vertical state, and a base portion 14 installed on the loading platform of the vehicle 11 and to which the upright portion 13 is fixed. At the upper end of the upright part 13 there is a gripping arm 15 for gripping the upper end of the weight panel 1. An enlarged view of this portion is shown in FIG. 9. One gripping arm 15 has a qLL shape and is rotatably attached to the upper end of the upright portion 13 of the gripping frame by means of a pin structure. This rotation is performed via the wire 16.

The tip of the wire 16 is attached to a connector 17 provided on the back side of the gripping arm 15, and is connected to the pedestal portion 1 via a pulley 18.
4 (see FIG. 10), when a worker turns the handle 20 of the hand winch 19, the gripping arm 15 rotates and the L-shaped part is rotated. The tip of the weight panel 1 can be grasped with the handle. At this time, the gripping cylinder 21 presses the tip of the weight panel 1 to the inside of the L-shape of the gripping arm 15, and gripping is completed.

At the lower end of the weight panel 1, there is a weight panel slide mechanism that slides the weight panel 1 in the front-rear direction relative to the pedestal portion 14 of the gripping frame. An enlarged view of this slide mechanism portion is shown in FIG. 11. The lower end of the weight panel 1 is received in a panel cradle 22 located on the pedestal portion 14 of the gripping frame. This panel holder 22 has a slide cylinder 23
It is slidable with respect to the pedestal portion 14.

The tip of the piston bar of the slide cylinder 23 is connected to the connector 24 of the panel holder 22. Also, the cylinder side of the slide cylinder 23.

It is connected to a support 25 which is fixed to the upright part 13 of the gripping frame. Sliding due to sliding is done by panel holder 2.
2 and the base part 14 of the gripping frame. On this sliding surface, an upper slide plate 26 is attached to the lower surface of the panel holder 22, and a seat bearing 27 is further attached to the lower surface of this upper slide plate 26. On the other hand.

A lower slide plate 28 is also attached to the base portion 14, and a seat bearing 29 is attached to the upper surface of this lower slide plate 28. In this way, the two seat bearings 27 and 29 come into contact, and this contact surface becomes a sliding surface. In addition,
The seat bearings 27 and 29 are made of Teflon resin, for example. The weight panel slide mechanism shown in FIG. 11 is for adjusting the attitude of the weight panel 1 received on the panel holder 22, especially in the vertical position.

When not sliding, a fixing bolt 30 is tightened between the panel holder 22 and the pedestal portion 14 to fix both.

A similar sliding mechanism also exists between the gripping frame and the vehicle loading platform 5. This gripping frame sliding mechanism allows the gripping frame to slide with respect to the loading platform 5 of the vehicle. An enlarged view of this gripping frame sliding mechanism is shown in FIG.
The slide mechanism shown in the figure has almost the same configuration as the slide mechanism shown in FIG. 11, so the same parts are given the same numbers. The pedestal portion 14 of the gripping frame is slidable by a sliding cylinder 23A.

The tip of the piston bar of this slide cylinder 23A is connected to the connector 24' of the base portion 14.

The cylinder side is connected to a support base 25' fixed to a pedestal 32 fixed to the loading platform 4. This sliding movement occurs between the pedestal portion 14 and the pedestal 32. The installation of the upper and lower slide plates 26', 28' and seat bearings 27', 29' on this sliding surface is as shown in FIG.
The same is true for . As shown in the figure, there are two sliding surfaces, front and rear. There is also a fixing bolt 30'.

Note that although the slide mechanism shown in FIG. 12 is one that slides the gripping frame in the front-rear direction with respect to the loading platform, there also exists a mechanism that slides the grip frame in the left-right direction.

Slide cylinder 23B that slides in this left and right direction
The position of is shown in Figure 8.

(Transportation and assembly work) Transportation and assembly work are performed by the vehicle on which the above-mentioned gripping frame 12 is installed (Figs. 2 to 5).
Of these, the assembly work (FIG. 5) will be further explained with reference to FIGS. 1 and 13. 1 is a detailed side view of FIG. 5, and FIG. 13 is a plan view of FIG. 1. Bridge 1, which is already partially assembled with multiple heavy panels
7, the weight panel 1 held vertically on the vehicle 11 is centered and assembled. The mounting ends 42 and 43 of the heavy panel 1, which are not held vertically, must be aligned, that is, centered, with respect to the mounting portions 40 and 41 that are present on the bridge 17 that is being assembled. Therefore, the vehicle 11 first moves in the direction of arrow A. Next, in the vertical direction,
That is, positioning in the directions of arrows E and F is performed by simultaneously working the hydraulic cylinders 45 attached to each axle 44 of the vehicle 11 and moving the loading platform 5 of the vehicle 11 up and down. After centering has been achieved in this way, the vehicle 11 moves to each axle 44 in order to insert the mounting ends 42, 43 of the weight panel 1 into the mounting parts 40, 41 of the bridge 17 that is being assembled.
By rotating 90@ in the horizontal plane, from direction A to direction B
The vehicle 11 moves in the direction of arrow B.

Fine adjustments in these centering and assembly operations are performed by sliding the weight panel 1 in the longitudinal and lateral directions with respect to the vehicle 11 using a slide mechanism (FIGS. 11, 12, and 8). Of these, the weight panel slide mechanism (11th
23°23) in Fig. 8 is for adjusting the posture of the weight panel, and by operating the left and right cylinders 23.23 (see Fig. 8) separately, it is possible to cope with the twisting posture of one weight panel on the left and right sides. . In addition, the gripping frame slide mechanism (
23', 23', 23A in FIGS. 12 and 8.

23A) is for moving the weight panel 1 in its position. Cylinder 23A that works in the left and right direction.

23A allows the weight panel 1 to be moved left and right.

After the mounting ends 42, 43 have been inserted into the mounting portions 40, 41, assembly takes place using assembly bolts or a predetermined connection method. After the assembly is surely completed in this way, the gripping cylinder 21 provided at the upper end of the gripping frame 12 is opened, and the hand-wound winch 19 is operated to pull the gripping arm 15 upward, and the weight panel 1 is gripped. to open.

Furthermore, by retracting the hydraulic cylinders 45 provided on each axle 44, the weight panel 1 will be separated from the vehicle 11, and if the vehicle 11 then moves in the direction of arrow C, the transportation and assembly of the weight panel 1 will be completed. It turns out.

[Other Examples]

(2) In the above embodiments, heavy panels for bridges were explained. However, transporting and assembling heavy panels can also be carried out when temporarily assembling offshore structures or steel towers, and the present invention can be carried out.

(2) Also, in the above embodiment, a large lifting machine 3 (FIG. 3) is used when the heavy panel is held by the holding frame 12. However, in other embodiments, if the surface roughening of the heavy panel itself is carried out on a surface roughening frame with a height that allows the vehicle 11 to enter underneath, the heavy panel can be roughened without using a large lifting machine. It can be held by a holding frame.

■Furthermore, in one or more embodiments, the centering work and assembly work were performed on a bridge that was being assembled, but in other embodiments, the centering work and assembly work were performed on a pedestal on which the bridge was installed. It may be.

Further, in the above embodiments, the weight panels were flat surface roughening materials, but in other embodiments, they may be bridge members assembled into a box shape.

〔Effect of the invention〕

According to the method for transporting and assembling heavy panels of the present invention, for a bridge assembled by a plurality of heavy panels, the work of using a lifting machine can be reduced through the work of assembling and transporting the heavy panels. That is, by using a lifting machine only when mounting heavy panels on a multi-axle heavy goods transportation vehicle, it becomes possible to perform centering and assembly work at the assembly station without using a lifting machine. Therefore, since the work requiring a lifting machine is reduced, work costs can be reduced through transportation and assembly of heavy bridge panels, and work efficiency and safety can be improved.

[Brief explanation of drawings]

Figure 1 is a detailed side view of Figure 5 which will be described later, Figures 2 to 5 are process diagrams showing the construction method of one embodiment of the present invention, and Figure 6 is a multi-shaft type weight used in this embodiment. A side view showing the gripping frame installed in the goods transport vehicle, FIG. 7 is a front view of FIG. 6,
Figure 8 is a plan view of Figure 6, Figure 9 is an enlarged view of part ■ in Figure 6, Figure 10 is an enlarged view of part X in Figure 6, and Figure 11 is a plan view of part ■ in Figure 6. , FIG. 12 is a sectional view of the exposed part in FIG. 6, FIG. 13 is a plan view of FIG. 1, and FIGS. 14 to 18 are process diagrams showing the conventional construction method. DESCRIPTION OF SYMBOLS 1... Weight panel, 2... Tower loading area, 3, 6... Lifting machine, 4... Heavy goods transport vehicle, 5... Loading platform, 7...
・Bridge, 11...Multi-axle heavy goods transport vehicle, 12...
Gripping frame, 13... upright part, 14... pedestal part. 15...Gripping arm, 16...Wire. 17... Connector, 18... Pulley, 19... Manual winch, 20... Handle, 21... Gripping cylinder, 22... Panel holder, 23.23A, 23B.
...Slide cylinder, 24...Connector, 2
5...Support stand. 26... Upper slide plate, 27.29... Seat bearing. 28...Lower slide plate, 30...Bolt. 40.41... Mounting part, 42.43... Mounting end part,
44...Axle, 45...Hydraulic cylinder.

Claims (1)

[Claims] A multi-axle heavy goods transportation vehicle (hereinafter simply referred to as a vehicle) that can move forward and backward, left and right, and diagonally by rotating each axle in a horizontal plane, and each axle can move up and down with a hydraulic cylinder;
A gripping frame arranged on the vehicle and gripping the weight panel in an upright state;
a step of mounting and gripping the heavy panel on a gripping frame of the vehicle in an upright state at a heavy panel loading site using a slide mechanism that slides left and right; a step of transporting the heavy panel in the upright state to an assembly station; The process consists of performing centering work and assembly work while holding the weight panel in an upright position; the centering work and assembly work involve vertical movement using a hydraulic cylinder of the vehicle, longitudinal movement of the vehicle,
A method for transporting and assembling a heavy panel, characterized in that movement is performed in left and right and diagonal directions, and sliding by the slide mechanism.