JP2565573Y2 - Volberwagen reaction force support device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a Forberwagen reaction force support device used in a method of constructing a bridge, an elevated building and other elevated structures supported by girders by a prestressing method.

[0002]

2. Description of the Related Art In order to construct a long bridge, for example, by such a construction method, as shown in FIG. 7, reference numeral 3 denotes an entirety which can be moved on a pair of rails 2, 2 provided on a floor plate of an existing bridge body 1. Forberwagen is used. When concrete is poured and solidified using this Forberwagen 3,
The rails 2 and 2 are moved onto the floor plate of the newly added bridge body, and the Forberwagen 3 is moved along the rails 2 and 2 to use the Forberwagen 3 for formwork mounting, concrete casting, We will proceed with work such as stress introduction.

The Forberwagen 3 is formed in a substantially rhombic frame when viewed from the side, and is provided with wheels 4 that roll on rails 2 and 2. When moving the rails 2 and 2 forward (to the right in the drawing), the berberwagen 3 is lifted to lift the wheels 4 from the rails 2 and 2, and the berberwagen 3 is newly laid. And a propulsion jack 6 that moves forward along the rail. Further, a work scaffold 8 is suspended from the Forberwagen 3 by a wire rope (or a rod) 7. In order to receive the reaction force, Forberwagen 3
At the rear end, there is provided a reaction force support device generally indicated by reference numeral 10A.

In FIG. 8, an anchor jack 1 supported by a main frame 9 is provided on a reaction force supporting device 10A.
1 is provided. A beam-shaped anchor jack retainer 12 is fixed to the top of the jack 11, and a pair of anchor steel rods 13 attached to the bridge 1 are detachably supported at both ends of the anchor jack retainer 12. I have.

[0005] The lower part of the anchor jack 11
The adjusting screw 14 is connected. A wheel support frame 15A is fixed to the lower part of the adjusting screw 14 at a right angle, and two pairs of wheels 17 are provided on both sides of the wheel support frame 15A by a pair of wheel support frames 16, respectively. ing. And a pair of wheels 1
Reference numeral 7 is located between the upper flange 2a and the lower flange 2b of the I-shaped steel rail 2. A jack base 18 is provided between the pair of rails 2 so as to face the lower end of the adjusting screw 14.

[0006] With this configuration, when concrete is cast, the anchor jack 11 is extended to adjust the adjustment screw 1.
4 is in contact with the jack base 18, and the reaction force is applied via the adjusting screw 14, the anchor jack 11, the anchor jack retainer 12 and the anchor steel rods 13, 13 to the bridge body 1.
To support.

Further, when the Folverwagen 3 moves,
The anchor jack 11 is contracted, the wheel is pulled up, the anchor steel bars 13, 13 are loosened by contacting the lower surface of the upper flange 2a of the rail 2, and the anchor steel bars 13, 13 are removed and moved.

[0008]

However, as shown in FIG. 9, if there are obstacles (projections A and diagonal members B) near the rails 2 and 2, for example, one of the wheel support frames 15 and the wheel support The ends of the frame 16 and the wheels 17 interfere with each other, making it impossible to move.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a reaction force support device for a vorberwagen that enables the vorberwagen to move even when there is an obstacle near the rail.

[0010]

According to the present invention, an anchor steel rod attached to a structure is supported on the top of an anchor jack provided vertically at the rear portion of the main frame, and an adjustment jack is provided at the lower part of the anchor jack. Two pairs of wheels are provided for a pair of rails via a wheel support frame and a wheel support frame on a screw, the anchor jack is extended to abut an adjustment screw on a structure, and the adjustment screw, anchor jack and anchor steel are provided. In a reaction force support device that supports a reaction force to a structure via a rod, a pair of wheels for one rail and a pair of front and rear wheels for the other rail are provided on a wheel support frame, and a pair of wheels are provided outside the other rail. A vertical reinforcing plate is provided and a pair of rail width stopping means is provided.

[0011]

In the Volberwagen reaction force supporting device constructed as described above, the outermost wheels are eliminated and the wheel supporting frame is shortened as compared with the conventional device. Therefore, there is no portion that has interfered with the obstacle so far, and the traveling of the Folverwagen can be performed.

Further, the reinforcing plate copes with the one-side load of the rail to prevent the rail from being deformed, and the width-stopping member copes with the lateral load of the rail so as to prevent the rail interval from expanding.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

The portions corresponding to those in FIG. 8 are denoted by the same reference numerals, and redundant description will be omitted.

In FIG. 1 and FIG.
On one side of the wheel support frame 15, a pair of wheels 17 for one rail 2 is supported by a wheel support frame 16. On the other side of the frame 15, a pair of front and rear wheels 17A for the inside of the other rail 2A is supported by a cantilevered wheel support frame 20.

On the other hand, the rail 2A on the wheel support frame 20 side
A reinforcing plate 21 for connecting the upper flange 2a and the lower flange 2b is provided on the outside.

Further, as shown in FIG. 3, there is provided a width stopping mechanism generally indicated by reference numeral 22 for connecting the pair of rails 2 and 2A. The width stopping mechanism 22 includes two rods 23 and 24 connected by a pair of connecting plates 25 and two rods 2.
A double-threaded width fixing bolt 26 for connecting the ends of the rails 3 and 24 to the rails 2 and 2A.

Next, the operation will be described.

The reaction force support device 10 of the present invention is a conventional device 1
It is not necessary to provide the outermost wheel support frame 16 of 0A, and therefore, the wheel support frame 15 is formed shorter than the wheel support frame 15A of the conventional device 10a. Therefore, as shown in FIG. 5, interference with the projection A and the diagonal material B is prevented. As a result, the movement of the Forberwagen becomes possible.

Further, the reinforcing plate 21 prevents the outside of the rail 2A from being opened by one-side load of the wheels 17, 17 on the rail 2A.

Further, the rod 23 constituting the width stopping mechanism is
The lower surface of the upper flange 2A of the rail 2a has a slope (usually 8
Degree) prevents the distance between the rails 2 and 2A from expanding due to the lateral load caused by the wheels 17 and 17 due to the presence of the degree. Further, when the Forberwagen is moved, the bolt 26 of the lower rod 24 is loosened, and the bolts 26, 26 of the upper rod 23 are loosened.
Then, as shown in FIG. 4, the upper rod 23 is rotated around the lower rod 24 to pass the wheel 17.

FIG. 6 shows an example in which a pair of rails 2A reinforced by the reinforcing plate 21 of the present invention is applied to a rail of a hoist type crane.

[0023]

[Effects of the Invention] The present invention is configured as described above, so that even if there is an obstacle near the rail, it is possible to move the Folverwagen.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is a side view of FIG. 1;

FIG. 3 is a front view showing a width stopping mechanism.

FIG. 4 is a side view of FIG. 3 for explaining the operation of the width stopping mechanism.

FIG. 5 is a drawing corresponding to FIG. 1 for explaining the effect of the present invention.

FIG. 6 is a sectional view of a hoist type crane showing an application example of one frame of the present invention.

FIG. 7 is a side view showing an example of a Forberwagen in which the present invention is implemented.

FIG. 8 is a front view of FIG. 7;

FIG. 9 is a view for explaining the problem in FIG. 8;

[Explanation of symbols]

 A: Projection B: Diagonal material 1: Existing bridge 2, 2A: Rail 3: Folberwagen 4: Wheels 5: Main jack 6: Propulsion jack 7 ... Wire rope 8 ... Work scaffold 9 ... Main frame 10, 10A ... Reaction force support device 11 ... Anchor jack 12 ... Anchor jack restraint 13 ... Anchor steel rod 14. ..Adjustment screws 15, 15A Wheel support frames 16, 20 Wheel support frames 17 Wheels 18 Jack bases 21 Reinforcement plates 22 Width stop mechanisms 23, 24 ..Bars 25.Connection plates 26.

Claims (1)

(57) [Scope of request for utility model registration] 1. An anchor steel rod attached to a structure is supported on the top of an anchor jack provided vertically at the rear of a main frame, and a wheel support frame and a wheel support frame are mounted on an adjustment screw provided on a lower part of the anchor jack. Two pairs of wheels are provided for a pair of rails, and the anchor jack is extended to abut the adjustment screw on the structure, and the reaction force is applied to the structure via the adjustment screw, the anchor jack and the anchor steel rod. In the reaction force supporting device to support, while providing a pair of wheels for one rail and a pair of front and rear wheels for the other rail on the wheel support frame,
A reaction force support device for a Forberwagen, comprising a vertical reinforcing plate provided outside the other rail, and a width stopping means for a pair of rails.