JPH0333769Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a suspension control device for a connecting bridge constructed between the deck of a berthed ship and a quay wall.

[Technical background]

A connecting bridge is built between a pier and a ship berthing for people to board and disembark, but if a ship is separated from the pier due to strong winds, etc., the ship's side of the connecting bridge is Since the end is placed or attached to the deck of the ship, it will be torn off and the end of the access bridge will fall when the ship separates.

[Purpose of invention]

This idea was made in view of the above circumstances.
To provide a suspension control device for a connecting bridge, which detects when a ship is abnormally separated from a pier, automatically detaches one end of the connecting bridge from the ship, and maintains it at a predetermined height. purpose.

[Summary of the idea]

In this invention, one end of the connecting bridge is rotatably attached to the main tower, and the other end is locked to a fixed column on the ship's side so that it can move toward and away from the ship, and a sensor detects when the ship leaves the ship abnormally and outputs the sensor output. In this way, the connecting bridge was unlocked from the fixed base and the end of the connecting bridge was raised by a predetermined amount.

〔Example〕

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

Figure 1 is a schematic diagram of the connecting bridge, where 1 is the pier, 2
is a ship moored to this pier 1 using a rope (not shown). 3 is the main tower erected on pier 1.

A bracket 4 is horizontally projecting from the main tower 3, and one end of the base of the connecting bridge 2 is rotatably supported at the end of the bracket 4.

Further, a bracket 7 to which a pulley 6 is attached is fixed to the upper part of the main tower 3, and the pulley 6 serves as a guide for a wire 9 that is wound around a winch 8 provided at the lower part of the main tower 3.

Reference numeral 10 denotes a guide sheave rotatably attached to the connecting bridge 5, which locks the end of the wire 9 via the pulley 6. By winding up or unwinding the wire 9 with the winch 8, The connecting bridge 5 can be raised around the end of the bracket 4.

On the other hand, a pair of brackets 11 are suspended and fixed to the lower part of the end of the bridge 5 on the hull side, and as shown in FIG. One end of the step 14 is pivotally supported by a pin 15 so as to be vertically rotatable, and a screw rod 16 for adjusting the weight balance with the step 14 side is attached to this frame 12, and a balance screwed thereto. A weight 17 is attached as shown.

A pair of support plates 18 are stretched over the frame 12, and a bearing member 19 is interposed and held in the center between the support plates 18.

Reference numeral 20 denotes a rotating shaft rotatably supported by the bearing member 19, which can rotate horizontally within the bearing member 19. A saddle 22 is connected to the lower end of the rotating shaft 20 via a flat plate 21. is installed.

This saddle 22 consists of a pair of clamping pressure pieces 23 and 24 that sandwich a fixed base, which will be described later, and a mounting piece 26 to which a hydraulic cylinder 25 is attached. It is configured so that it can be pressed against one side of 24.

Therefore, the saddle 22 is rotatable about the pin 15 together with the bearing member 19 and the step 14, and furthermore, the saddle 22 can be horizontally rotated by supporting the rotating shaft 20 on the bearing member 19. It is becoming. Note that the rotating shaft 20 is connected to the bearing member 1
9 is provided with a retaining mechanism (not shown).

Reference numeral 29 denotes a fixed base fixed on the deck of the hull 2, so that when the winch 8 is operated and the wire 9 is loosened, the fixed base 29 is interposed between the clamping pressure pieces 23 and 24 of the saddle 22. It's getting old.

Reference numeral 30 denotes a hydraulic hose for selectively supplying hydraulic pressure to two oil chambers separated by a piston in the hydraulic cylinder 25, and is connected to a hydraulic pump via a hydraulic control valve or the like.

By supplying hydraulic pressure to one oil chamber of this hydraulic cylinder 25, the saddle operating member 28 can be projected through the piston rod 27, and the fixed base 29 can be firmly sandwiched between the clamping pressure pieces 23 and 24. , the end of the connecting bridge 5 can be suspended and held against the deck. In addition, due to the above-mentioned hydraulic release, the clamping pressure piece 2
The clamping pressure of the fixing base 29 by the fixing bases 3 and 24 can be instantly released.

In addition, the end of the connecting bridge 5 moves up and down around the pin 15 and further rotates around the rotating shaft 20, so the ship's hull moves up and down due to tides and loading and unloading cargo, and the ship's hull rolls due to waves. motion,
Despite the pitching operation, the connected state between the connecting bridge 5 and the fixed base 29 is maintained safely.

Next, the connection between the end of the connecting bridge 5 and the fixed base 29 is automatically released (auto-released) depending on the force acting on the pier and the hull.

FIG. 3 shows this auto-release control circuit.
In the figure, 31 is a switch circuit that is operated in the event of an emergency, 32 is a pressure sensor that detects the force acting on the hull due to wind pressure and waves, and 33 is a separation detector that detects an abnormal state of the hull leaving the pier. The sensor is configured as part of a light or radio wave transmitting/receiving facility installed on the hull or pier, for example, and is installed on the pier side.

Reference numeral 34 denotes an arithmetic circuit that calculates whether or not the magnitude of these outputs is above a set level based on the output of the switch circuit 31 or the output of the pressure sensor 32 or separation detection sensor 33; When the output is above the level, the hydraulic control circuit 35 connected thereto is activated. By this operation, the electromagnetic valve 36 is operated, and the hydraulic cylinder 2
5 in the direction in which the piston rod 27 moves backward. 37 is a hydraulic pump as a hydraulic power source.

In addition, the electromagnetic valve 36 can be operated or returned to any desired state by operating another switch in order to allow the connecting bridge 5 to rise and fall normally.

As described above, as the piston rod 27 is retracted by the hydraulic cylinder 25, the saddle actuating member 28
The clamping of the fixing base 29 can be quickly released via the clamping pressure pieces 23 and 24.

A timer 38 is connected to the output side of the arithmetic circuit 34, and a winch operating circuit 39 and the winch 8 are sequentially connected to this timer 38. Note that 40 is a connecting bridge sensor that detects the amount of hoisting operation of the winch 8, that is, the amount of rise of the connecting bridge 5.

In this winch operation circuit, when the output of the distance detection sensor 33 is equal to or higher than a set level, that is, when the hull 2 is separated from the pier 1, the output is given to the calculation circuit 34, and then the winch is activated after a predetermined time delay by the timer 38. A winch activation signal is provided to circuit 39. The winch 8 is driven based on this activation signal, and the connecting bridge 5 is raised.

This rising of the connecting bridge 5 is detected by the connecting bridge sensor 40. For example, when the connecting bridge 5 rotates and rises, for example, by 10 degrees around the pivot point, the connecting bridge sensor 40 detects the rising of the connecting bridge 5.
Based on the 0 output, the arithmetic circuit 34 stops outputting the signal to the winch operating circuit 39, and maintains the bridge 5 in its raised position.

In this way, if the hull 2 abnormally leaves the shore, the end of the connecting bridge 5 may fall into the sea, slide on the deck and collide with the fixed base 29, or the step 14 may fall off the fixed base 29. This can effectively prevent damage caused by hitting the product.

In other words, the end of the connecting bridge 5 is connected to the fixed base 2 of the hull 2.
9, if the switch circuit 31 is operated or if the hull 2 abnormally tries to leave the ship due to wind pressure or waves, the connection between the fixed base 29 and the saddle 22 by the hydraulic cylinder 25 is first released,
Following this release operation, the bridge 5 floats up, causing the step 14 and a part of the end of the bridge 5 to collide with the fixed platform 29 due to vibrations of the hull.
The 5th end of the connecting bridge will no longer fall into the sea. Furthermore, if the end of the connecting bridge 5 is raised, it is possible to avoid collision of the hull 2 with the connecting bridge 5 even when the ship 2 is returned to the pier 1, thereby preventing damage to the connecting bridge. There is no.

In addition, the above circuit can be provided with a buzzer that sounds when a breakaway is detected, and a buzzer that sounds when the bridge
It has a multi-stage structure that can be expanded and contracted, and at the limit of expansion, a warning buzzer sounds to stop the expansion.
It is possible to attach a control circuit to adjust the lifting speed of the connecting bridge.

[Effect of idea]

As explained above, according to the present invention, the connecting bridge is connected to the fixed base using an auto-release structure, and the connecting bridge is held at a predetermined height after being released. , the connection between the ship's hull and the connecting bridge built on the pier can be quickly and safely cut off arbitrarily or automatically.

In addition, even if the ship abnormally lifts off the deck while there are workers or cargo on the access bridge, the end of the access bridge will rise by a certain amount, preventing the workers and cargo from falling into the sea. can be prevented.

Furthermore, even if the hull after separation is shaken by the waves and returned to the pier side, it is possible to prevent collisions between the edges of the access bridge and the steps and the hull-side fixing platform, thereby preventing damage. Effects such as being able to do the following can be obtained.

[Brief explanation of the drawing]

FIG. 1 is a front view schematically showing a suspension control device for a connecting bridge according to the present invention, FIG. 2 is a longitudinal cross-sectional view showing the structure of a suspension section, and FIG. 3 is a suspension control circuit diagram. 1... Pier, 2... Hull, 5... Connecting bridge, 8...
...Winch, 25...Hydraulic pressure holding means, 29...Fixing base, 33...Separation detection sensor, 34...Control means.

Claims (1)

[Scope of utility model registration request] In a suspension control device for a connecting bridge that allows one end of a connecting bridge provided on the pier side to be suspended from a ship moored to the pier, the device is arranged at a predetermined location of a main tower erected on the pier, and A winch wrapped with wire for suspending the connecting bridge; a distance sensor installed on the pier to detect when the ship is separated during mooring; and one end of the connecting bridge is rotatably connected to the main tower. When the separation sensor sends an output, it releases the locking of the locking means and locks the connecting bridge. A suspension control device for a connecting bridge, comprising control means for sending an output to the winch to raise the other end by a set amount.