JPS5934569Y2 - crosslinking device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bridging device, and more particularly to a bridging device that has low friction and is advantageous in terms of space, and is necessary for lifting and lowering ships, airplanes, etc.

In general, bridge devices are used to raise and lower passengers on ships such as car ferries and other airplanes, but especially when a car ferry approaches the shore, the ferry hull is affected by waves, causing rolling motion, pitching motion, and lifting motion. , 0 and 0 forward and backward directions, the bridging device, usually called a gigangway, used in this car ferry needs to be able to follow the movements of the ferry hull without difficulty.

In conventional bridging equipment of this type, the bridging boom is extended to its maximum length immediately before bridging, so the distance from its center of rotation to the center of gravity of the bridging boom overhangs the center of rotation, causing the bridging boom to overturn. A prevention mechanism is required.

That is, in this mechanism, the overturning moment of the swing tower is shared between the sliding portion of the swing tower and the swing bearing.

Therefore, the sliding part receives download (pushing force), and the swing bearing receives upload (pulling blade), and the sliding part has a much larger share of the load.

For this reason, the turning operation to rotate the bridging boom and position the tip of the bridging boom at a fixed position on the ferry hull side is an extremely important operation while receiving this large download. In order to reduce the vibration, generally several rollers are rotated, or a steel plate and a copper-based sliding material, such as bronze casting (hereinafter simply referred to as BC material), are used to slide on the rollers to further prevent vibration during operation. Therefore, various considerations such as sufficient lubrication are necessary.

Therefore, in order to solve these drawbacks, the purpose of the present invention is to create a hull, etc. that sufficiently follows the movement of the ferry hull due to wave motion, has extremely low frictional resistance on the sliding parts, and eliminates the need for extra parts and work. An object of the present invention is to provide a crosslinking device suitable for lifting and lowering.

An example of implementing the present invention will be described below with reference to the drawings.

A bridging boom 2 is connected to the swing tower 1 so as to be able to rotate, move up and down, and move forward and backward, and the bridging boom has stairs 3 and a bridge 4
, 5.6 are attached, so that passengers can get on and off the deck of the hull 7 of a car ferry or the like docked through these stairs 3 and bridges 4, 5.6.

The turning tower 1 can be transported to various locations by an automobile 8 or the like.

The swing tower 1 is rotatably attached to a swing bearing 9 provided on the back of an automobile 8 or the like, and a swing tower frame 10 protrudes laterally from the swing tower 1 through a beam 11. It is firmly fixed to the turning tower 1.

There is a bracket between the swing tower frame 10 and the bridging boom 2)13.
Cylinder 12 is connected via 14, and this cylinder 1
The bridging boom 2 can move up and down according to the expansion and contraction of the bridging boom 2.

The swing bearing 9 can be a commonly used plain bearing, ball bearing, or tapered roller bearing.In short, a thrust bearing with a mechanism that can sufficiently withstand uploading is used.

A slide plate 16 made of stainless steel is welded onto the slide base 15 integral with the bearing 9, and a slide butt 17 made of Teflon (registered trademark) or the like is slidably disposed on the slide plate 16. This slide butt 17 is formed into a thin circular or square shape.

The slide butt 17 is removably fixed to the upper seat 18 with a countersunk screw or the like.

A concave spherical surface 19 is formed on the upper surface of the seat 18, and a convex seat 2 fixed to the lower end of the rotating tower frame 10 is formed on this spherical surface 19.
0 is slidably fitted.

These uneven spherical surfaces are designed so that even if the sliding surface has a slight inclination, it will not affect the sliding movement.

The above slide plate 16, slide butt 17 and seat 1
A sliding portion A is formed by 8.19 to reduce frictional resistance and allow the device to rotate.

The sliding friction between a conventional BC material and an iron plate is generally considered to have a coefficient μ of 0.15 or more, but in the case of the Teflon (registered trademark) slide butt 17 and stainless steel slide plate 16 used in the present invention, It is experimentally clear that the above coefficient shows a frictional resistance value of about 1 to 2.

Therefore, the load on the swinging cylinder during swinging and sliding is small, and the change in frictional resistance value is also small, so there is no chatter in the sliding part.

In addition, the sliding surface can slide without lubrication, resulting in good workability and easy maintenance.

Furthermore, the space of the sliding part A can be designed within a small height range.

In other words, when ordinary rollers are used, there is rolling resistance, so the rolling resistance during sliding is lower than when sliding between the BC material and the steel plate described above, but on the other hand, the load on the sliding part becomes very large, Therefore, in order to reduce the wheel pressure load on the rollers, the only means to use a large number of rollers and to reduce the rolling coefficient is to increase the roller diameter. Space is determined.

However, since the present invention does not use such a roller, it is advantageous not only in terms of space but also in terms of cost because the number of parts is small.

[Brief explanation of the drawing]

The accompanying drawings relate to an example of the implementation of the present invention, with FIG. 1 being a side view and FIG. 2 being a partially cutaway enlarged side view. 1... Turning tower, 10... Turning tower frame, 1
5...Slide base, 16...Slide plate, 17...Slide butt, 18
, 20... Locus, 19... Spherical surface.

Claims (1)

[Scope of utility model registration request] A rotating tower frame is fixed to a freely rotatable rotating tower, a convex seat is provided on the lower side of the rotating tower frame, and a slide butt is slidably mounted on a slide plate connected to a slide base. The slide butt is removably connected to the lower surface of the seat disposed above, and the seat has a concave shape on its upper surface to slidably fit into the convex seat. A bridging device in which a convex seat and a seat with a concave spherical surface form a sliding part.