JPS59220503A - Revolving type movable bridge - 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 The present invention relates to a swing-type movable bridge in which the tip of a movable bridge main body can be easily attached to and detached from a tip support metal fitting.

As shown in the schematic side view in Fig. 1 and the schematic plan view in Fig. 2, the conventionally used swing type movable bridge bridges the movable bridge main body 1 on both banks of the water surface W, so there is no bridge on one bank side. A swing bearing 2 shown in FIG. 4 is provided to support the movable bridge body 1 so as to be able to swing freely around the provided swing center Sc, and a concave support metal fitting 6 as shown in FIG. Convex support bracket 4 on the foundation side installed on the other bank side
In order to facilitate the attachment and detachment, a guy roller 5 for guiding the tip is provided on the side of the movable bridge main body 1.
Corresponding guide rails 6 are provided on the foundation side.

In addition, a counterweight 7 and a swing drive device 8 are provided on the side of the movable bridge main body 1 where the swing bearing 2 is provided. In this state, it is possible to turn as shown by arrow R.

However, in the conventional swing-type movable bridge described above, it is difficult to attach and detach the supporting metal fittings 6 and 4 at the tip due to the bending and vibration of the tip of the movable bridge body 1, and the operation is difficult. The problem is that it is complex.

In addition, since a moment is loaded onto the swing bearing 2 due to the unbalance of the movable bridge body 1 during swing, a large capacity swing bearing must be used, which has the drawback of increasing the external size accordingly. there were.

Therefore, the present invention solves the above-mentioned conventional problems and facilitates the attachment and detachment of the supporting metal fittings at the tip of the movable bridge body.
The purpose is to simplify the operation and to make the slewing bearing compact.

That is, the present invention provides a swing-type movable bridge in which a movable bridge body is rotatably supported by a swing bearing and is bridged on a water surface. The main feature of this bridge is that a buoyancy tank whose buoyancy can be adjusted relative to the water surface is attached to the lower end of the movable bridge body.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.
FIG. 5 is a schematic side view of a swing type movable bridge in an embodiment of the present invention, FIG. 6 is a plan view of FIG. 5, and FIG. 7 is an enlarged side view of the tip of the movable bridge body of FIG. FIG. 8 is an enlarged side view of the main part of the swing bearing shown in FIG. Parts are indicated by the same part number.

Therefore, in the embodiment of the present invention shown in FIGS. 5 and 6,
The swing bearing 2 is provided with a tilting hinge 9 that allows the movable bridge body 1 to be tilted up and down as shown in the direction of the arrow T in FIG. is installed. In addition, 11 in FIG. 6 is a buoyancy tank storage pit.

In the swing-type movable bridge of the present invention having the above configuration, the tip of the movable bridge body 1 can be easily moved up and down by adjusting the buoyancy of the buoyancy tank 10 attached to the lower part of the tip. When attaching and detaching the supporting fittings 6 and 4 shown in FIG. 7, the concave supporting fitting 3 can be easily attached to and detaching from the convex supporting fitting 4 by dropping the movable bridge main body 1 in the direction of the arrow.

Furthermore, since the swing bearing 2 is provided with a freely rotatable elevation hinge 9, no moment is applied due to unbalance when the movable bridge main body 1 swings.

Therefore, in the swing-type movable bridge of the present invention, it is easy to move the tip end of the movable bridge up and down, making it easy to attach and detach the support fittings and also to simplify the operation.

Another advantage is that there is no need for a huge counterweight to balance the movable bridge body when it swings, and because no moment is loaded on the swing bearing, a compact swing bearing can be used.

[Brief explanation of the drawing]

Figure 1 is a schematic side view of a conventional swing type movable bridge, Figure 2 is a plan view of Figure 1, Figure 3 is an enlarged side view of the tip of the movable bridge body in Figure 1, and Figure 4 is a FIG. 1 is an enlarged side view of a cross section of a main part of the swing bearing, FIG. 5 is a schematic side view of a swing type movable bridge in an embodiment of the present invention, FIG. 6 is a plan view of FIG. Enlarged side view of the tip of the movable bridge body in Figure 5, No. 8
This figure is an enlarged side view of a cross section of a main part of the swing bearing shown in FIG. 5. 1...Movable bridge body, 2...Swivel bearing, 9...
- Elevation hinge, 10... Buoyancy tank, Sc... Center of rotation, W... Water surface. Agent: Patent Attorney Shin Ogawa − Patent Attorney Ken Noguchi Patent Attorney Kazuhiko Saishita Figure 1 Figure 3 Figure 5

Claims (1)

[Claims] In a swing-type movable bridge in which a movable bridge body is supported by a swing bearing so as to be freely swingable and is bridged on the water surface, the swing bearing is provided with an elevation hinge that allows the movable bridge body to be raised and lowered, and the movable bridge body is A swing-type movable bridge, characterized in that a buoyancy tank is attached to the lower tip of the bridge, the buoyancy of which can be adjusted relative to the water surface.