JPH11245880A - Position changing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a small and compact position changing device. SOLUTION: A holder arm 19 connected to a spud holder 12 at its end is supported in such a way as to freely swing about a trunnion 18. A first cylinder 21 swinging the holder arm 19 about the trunnion 18 is connected to the rear end of the holder arm 19. A second cylinder 23 supported against the holder arm 19 is connected to the holder arm 19. The position of the spud holder 12 is changed approximately 90 deg. by the swing of the holder arm 19 about the trunnion 18 and the swing of the spud holder 12 about the arm connecting position.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a posture changing device for changing the posture of a member such as a spud for stabilizing a working barge when it is stopped by about 90 degrees.

[0002]

2. Description of the Related Art Generally, when a river is constructed from a working barge or an operation for removing sediment from the water bottom is performed, the working barge is stopped and stabilized.

As a device for stabilizing a working barge, there has been a spud device in which a column-shaped spud extending long in the vertical direction is supported so as to be able to move up and down, and the spud is lowered to pierce the tip into the water bottom. Are known.

[0004] Here, the spud has a length of several tens of meters. The spud is lifted upward and held at the raised position so as not to hinder the movement of the work barge when the work barge moves.

At this time, since the upper end of the spud is held at a position considerably higher than the deck surface of the work barge, when the bridge girder of the bridge over the river is low, the spud collides with the bridge girder and the work girder hits the work girder. It may hinder the ship's progress.

[0006]

As described above, when the bridge girder is low and the spuds may collide with the bridge girder, conventionally, the spuds are pulled out using a crane or the like mounted on a work barge, Since the work barge is moved with the spuds lying sideways on the deck, changing the attitude of the spuds to a state where collision is avoided has been extremely troublesome.

The inventor has found that the above problem can be solved by changing the posture of the spud from the standing state to the lying state.

[0008] As a posture changing device for changing the posture of the spud, the spud is slidably supported by a spud holder, and the middle of the arm having the tip connected to the spud holder is automatically supported by a trunnion to be freely movable. A posture conversion device in which a cylinder is connected to the end and the arm is swung by the operation of the cylinder to raise and lower the spat holder is conceivable.

By the way, as described above, in the posture changing device that raises and lowers the spud by using a single cylinder, in order to prevent the cylinder from interfering with the trunnion when the arm is swung, the center of the arm is swung. Therefore, it is necessary to increase the dimension up to the cylinder connecting position. For this reason, a long arm is required for the arm, and a large cylinder having a long stroke is required for the cylinder, which disadvantageously increases the size of the attitude conversion device.

It is an object of the present invention to provide a small and compact attitude conversion device which can smoothly change the attitude of a spud or the like in a spud device.

[0011]

In order to solve the above-mentioned problems, according to the present invention, a tip end of an arm supported so as to be swingable about a trunnion is connected to a swing member, and a rear end of the arm is provided. A first cylinder for swinging the arm about the trunnion is connected to the first part, and a second cylinder for swinging the arm about the connecting position of the swing member and the arm is connected to the arm. Has adopted.

With the above configuration, when the first cylinder is operated, the arm swings around the trunnion,
When the swinging member is tilted by a predetermined angle together with the arm and the second cylinder is operated after the tilting, the rocking member tilts by a predetermined angle in the same direction around the connecting position of the arm and the rocking member, and the posture of the rocking member Can be greatly changed.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a working barge 1
Shows the stern side of. A rectangular frame 2 is provided on both sides of the stern of the working barge 1, and a rectangular frame 3 mounted on the frame 2 is removably supported via bolting means. Have been.

A spud device 10 is provided inside the frame 3 for stabilizing the work barge 1 when stopped.

3 to 7 show details of the spud device 10. FIG. The spud device 10 includes a column-shaped spud 11 having a sharpened tip, a spud holder 12 as a swinging member that slidably supports the spud 11, and a posture conversion device 13 that changes the posture of the spud holder 12. have.

The spud 11 has a prismatic shape as shown in FIG.
A shape such as a column shape can be adopted. The spud 11 can be freely inserted into and removed from a spud insertion hole 4 formed in the work barge 1.

The spud holder 12 has a cylindrical shape. The spud holder 12 has an appropriate shape according to the shape of the spud 11, and has a cylindrical shape in the case of a cylindrical shape.

A pair of opposing guide frames 14 extending in the longitudinal direction are provided before and after the spud holder 12, and a guide groove 14a is formed between the guide frames 14. Also,
As shown in FIG. 3, connecting plates 15 are attached to both side surfaces of the spud holder 12, and the arm connecting pieces 16 and the cylinder connecting pieces 17 are provided on the connecting plates 15 at intervals in the length direction of the spud holder 12. Is provided.

As shown in FIGS. 3 and 4, the posture changing device 13 has a tip end of a holder arm 19 as an arm swingably supported about a trunnion 18 provided between both side frames 3a of the frame 3. To the arm connecting piece 1
6 via a pin 20, and a first cylinder 21 supported by the frame 3 at the rear end of the holder arm 19.
Of the first cylinder 21
By the operation described above, the holder arm 19 is swung about the trunnion 18 by a predetermined angle.

Further, the piston rod 24 of the second cylinder 23 is connected to the cylinder connecting piece 17 of the connecting plate 15,
An end of the cylinder 23 is connected to a connection piece 25 formed in the middle of one side of the holder arm 19, and the second cylinder 2
The operation of 3 causes the holder arm 19 to swing about the pin 20.

In the embodiment, the operation of the first cylinder 21 rotates the spud holder 12 together with the holder arm 19 about the trunnion 18 by 45 °, and the operation of the second cylinder 23 rotates the spud holder 12 about the pin 20. 12 is rotated by 45 °. For this reason, by operating both cylinders 21 and 23,
The spud holder 12 can be changed from a vertical posture to a horizontal posture. In the horizontal posture, the spud holder 12 is supported by the front beam 3b of the frame 3.

FIG. 3 shows a state in which the spud holder 12 is made vertical. In this vertical position, the spud 11 is moved up and down by the operation of the elevating device 26. The spud holder 12 is locked by the lock device 27 shown in FIG.

As shown in FIG. 3 and FIG.
In the lower part of the spud 11, a hole 28 penetrating back and forth is provided, a wire rope 30 is hung on the lower part of the outer periphery of a pulley 29 which is incorporated and rotatably supported in the hole 28, and both ends of the wire rope 30 One end is pulled up along a guide groove 14a provided in front and rear of the holder 12, and one end thereof is moved from a rotatable pulley 31 provided on a rear upper portion of the spud holder 12 to a vertically movable movable pulley provided therebelow. The pulley 31 is fixed to a bracket 33 that supports the pulley 31.

The other end of the wire rope 30 is connected to a first pulley P _{1 to a} third pulley P 3 provided on the front side of the spud holder 12.
It passes over the pulley P _3, which is supported by the third front frame 3c of the frame 3 from the pulley P ₃ to guide the wire rope 30 drawn on the bow side pulley P ₄ which is rotatably supported on the trunnions 18 winch 34, the wire rope 30 is wound and rewound by the rotation of the drum 35 to move the spud 11 up and down.

The movable pulley 32 is rotatably supported by a bracket 37 provided on a weight 36, and the weight 36 moves up and down along the guide frame 14 provided on the rear side surface of the spud holder 12. The bracket 37 is freely supported, and can rise to a position where the bracket 37 comes into contact with the bracket 33 thereabove.

The locking device 27 is connected to the side frame 3a of the frame 3.
A plurality of lock cylinders 38 are provided at intervals in the vertical direction, and a lock pin 39 which is moved back and forth by each lock cylinder 38 is provided with an engagement hole 40
To be engaged.

The spud lock device 4 shown in FIG.
It can be locked by one. The spud lock device 41 has a projection 42 provided on the front surface of the spud 11, and a pin hole 4 formed between the projection 42 and the pair of guide frames 14.
3 and 44, and the lock pins 4
5, the spud 11 is fixed.

In the working barge 1 shown in the embodiment,
In stabilizing the barge 1 when it is stopped, as shown in FIG. 1, with the spud holder 12 in the vertical position, the spud 11 is lowered by the operation of the lifting / lowering device 26 to pierce the tip into the water bottom. To do.

Here, the lowering of the spud 11 by the operation of the elevating device 26 is performed by the drum 35 of the winch 34 shown in FIG.
Is rotated in the rope rewind direction to rewind the wire rope 30, and the spud 11 is lowered by its own weight. At this time,
The extension amount of the wire rope 30 is set so that the wire rope 30 can be further extended from the state in which the tip of the spud 11 pierces the bottom of the water and the wire rope 30 can be loosened. The wire rope 30 is absorbed by the downward movement of the wire rope 36 to give an appropriate tension.

When the work barge 1 is moved, the spud 11 is pulled up by the operation of the elevating device 26,
The work barge 1 is moved in a state where the tip of the work boat 1 is separated from the water bottom.

If there is a possibility that the spud 11 collides with a bridge girder or the like during the movement of the work barge 1, the drum 35 of the winch 34 is rotated in the winding direction to wind up the wire rope 30, and the lower end of the spud 11 After the spud 11 is raised to such an extent that the spud 11 slightly projects from the lower end of the spud holder 12, the lock pin 45 of the spud lock device 41 shown in FIG.
4 and the spud 11 is fixed. Then, the spud 11 is turned down by the operation of the posture changing device 13.

The fall of the spud 11 by the posture changing device 13 causes both the first cylinder 21 and the second cylinder 23 to operate. Piston rod 22 of first cylinder 21
Is advanced, the holder arm 19 is tilted about the trunnion 18, and the spud 11 can be tilted by 45 °. When the piston rod 24 of the second cylinder 23 is retracted after the tilt of the spud 11, the spud holder 12 further swings by 45 ° in the same direction about the pin 20, and as shown in FIGS. 11 can be placed in a lying state.

By setting the spuds 11 in the down position as described above, it is possible to prevent the spuds 11 from contacting the bridge girder, and to allow the work barge below the bridge girder to pass.

If the work barge can pass below the bridge girder by slightly tilting the spud 11, the first
By operating one of the cylinder 21 and the second cylinder 23,
The spud 11 may be tilted at a predetermined angle.

In order to change the spud 11 lying down to a vertical position, the piston rod 24 of the second cylinder 23 is moved forward and the spud holder 12 is tilted by 45 ° about the pin 20 in the opposite manner to the above. Then, the piston rod 22 of the first cylinder 21 is retracted, and the holder arm 19 is swung about the trunnion 18 to raise the spud holder 12.

In the embodiment, when the spud 11 falls down, the first cylinder 21 is operated and then the second cylinder 23 is operated. Conversely, the first cylinder 21 is operated after the second cylinder 23 is operated. The spud 11 may be turned down by operating the cylinder 21.

As the posture changing device 13 for changing the posture of the spud 11, the first cylinder 21 and the second cylinder 2
3 is provided, and the spud 11 is raised and lowered by the operation of each of the cylinders 21 and 23, so that the spud 11 can be raised and lowered in a very short time. Further, if the spud holder 12 is caused to swing 90 ° by a single cylinder, it is necessary to use a cylinder having a large stroke amount, but the two cylinders 21 and 23 are required.
By making the spud holder 12 undulate, small cylinders with small stroke amounts can be used as the cylinders 21 and 23.
Can be reduced in size.

Further, by raising and lowering the spud holder 12 by the two cylinders 21 and 23, the spud holder 12 can be tilted in two stages.
According to the height of the bridge girder, the spud 11 can be changed to a posture in which the work barge 1 can pass below the bridge girder.

In the embodiment, the attitude of the spud holder 12 is changed by approximately 90 ° by the attitude changing apparatus according to the present invention, but the member for changing the attitude is not limited to the spud holder 12.

[0040]

As described above, according to the present invention, the distal end of the arm, which is swingably supported about the trunnion, is connected to a swing member such as a spat holder, and connected to the rear end of the arm. The posture of the swinging member is changed by about 90 ° by the two cylinders of the first cylinder and the second cylinder supported by the arm, so that the swinging member is swung by about 90 ° by a single cylinder. As compared with the case of moving the cylinder, a cylinder having a small stroke amount can be used as each cylinder, and an arm having a short length can be used as an arm, and the size and size of the attitude conversion device can be reduced. .

Further, the swing of the swing member about the trunnion and the swing of the swing member about the connecting position of the arm causes the swing member to swing about 90 °, so that the force of the first cylinder is reduced. The power of the second cylinder can be efficiently transmitted to the swinging member, and the posture of the swinging member can be smoothly changed.

[Brief description of the drawings]

FIG. 1 is a front view showing a stern side of a working barge employing a posture conversion device according to the present invention.

FIG. 2 is a plan view of the above.

FIG. 3 is a vertical cross-sectional front view showing a built-in portion of the attitude conversion device according to the first embodiment;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3;

FIG. 5 is a sectional view taken along the line VV in FIG. 3;

FIG. 6 is an enlarged sectional view showing the upper part of the spud holder according to the first embodiment;

FIG. 7 is a sectional view taken along the line VII-VII of FIG. 6;

FIG. 8 is a vertical sectional front view showing the spud in the down position according to the first embodiment;

FIG. 9 is a sectional view taken along the line IX-IX in FIG. 8;

FIG. 10 is a sectional view taken along line XX of FIG. 8;

[Explanation of symbols]

 12 Spud Holder (Swinging Member) 18 Trunnion 19 Holder Arm (Arm) 21 First Cylinder 23 Second Cylinder

Claims (1)

[Claims] 1. A front end of an arm swingably supported about a trunnion is connected to a swing member, and a first cylinder for swinging the arm about the trunnion is provided at a rear end of the arm. A posture conversion device, wherein the second cylinder is connected to the arm and the arm is pivoted about the coupling position of the pivoting member and the arm.