JPH01182299A - Fluid cargo gear - Google Patents

Abstract

PURPOSE:To minimize driving quantity at the time of the movement of an outboard arm and to miniaturize a drive means, by unifying the lower cooperation member of an inboard arm with a follower member and connecting the drive member provided to the upper part of a base riser to the follower member by a connection member and rotating the drive member by the drive means. CONSTITUTION:When a drive sheave 22 is rotated by providing a drive means 23 between the drive means 22 and a base riser 1 to rotate an inboard arm 4 with respect to the base riser 1, a follower sheave 21 is revolved by the drive sheave 22 connected through a cable body 24. Whereupon, the lower sheave 11 integrally fixed to the follower sheave 21 rotates with respect to the inboard arm 4. Whereupon, the upper sheave 10 connected to the lower sheave 11 by a wire rope 12 is rotated and the outboard arm 6 fixed thereto is rotated with respect to the inboard arm 4. When the inboard arm 4 is rotated as mentioned above, the outboard arm is revolved automatically in connection with the inboard arm.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a fluid cargo handling device, and more particularly, to a fluid cargo handling device equipped with a drive mechanism that minimizes the amount of drive of an outboard arm.

"Prior Art" Fluid handling equipment is generally used when handling fluids such as petroleum from tanks on land to tankers or other ships, or vice versa. ing.

As a conventional fluid cargo handling device of this type, there is a
Those described in Japanese Patent Publication No. 3536, Japanese Utility Model Publication No. 53-25860, etc. are known, and typical examples include
(See Figure 1 of Publication No. 3536).

This fluid cargo handling device includes a riser pipe 1 vertically installed on a basic structure B such as a jetty or a wharf, and a hollow horizontal rotation joint 2 and a hollow vertical rotation joint 3 connected to the upper end of the riser pipe 1. An inboard arm 4 is attached to be rotatable in horizontal and vertical directions, and an inboard arm 4 is attached to the tip of the inboard arm 4 via a hollow vertical rotation joint 5 to be rotatable in the vertical direction with respect to the inboard arm 4. The main components are an outboard arm 6 and a hollow pivot joint 7 attached to the tip of the outboard arm 6 and capable of pivoting horizontally and vertically. An upper sheave (upper interlocking member) 10 for rotating the outboard arm 6 is located at the tip of the inboard arm 4, and a lower sheave (lower interlocking member) 1 is located near the lower end of the inboard arm 4.
1 is attached to each, and between these upper sheave 10 and lower sheave 11 is a wire rope (connection member)
2 is wound around the lower sheave 11, and a counterweight 14 is attached to the lower sheave 11, which is attached to an arm 13 that interlocks with the outboard arm 6, so as to maintain balance when the outboard arm 6 moves. I have to.

Then, as shown in FIG.
Cargo handling work is carried out by connecting to the
While the rotation angles of the inboard arm 4 and the outboard arm remain the same, the inboard arm 4 is rotated to a substantially vertical position, the tip of the outboard arm 6 is flipped upward, and then the bottom By rotating the sheave 11, the tip of the outboard arm 6 is gradually folded toward the inboard arm 4, as shown in FIG. 7, to bring it into a stored state.

[Problems to be Solved by the Invention] However, in the conventional fluid cargo handling device, when the device is connected to the cargo handling pipe of a tanker to start cargo handling, or when cargo handling is completed and the device is returned to the storage position, First, while keeping the rotation angle between the inboard arm and the outboard arm constant, rotate the inboard arm to raise the outboard arm to a high position, and then This necessitates the unnecessary movement of folding the outboard arm relative to the inboard arm, which increases the amount of drive of the outboard arm, and inevitably increases the operating stroke of the actuator that is the driving means for the outboard arm. There have been problems such as an increase in the size of the actuator and its driving source.

The present invention has been made in view of the above problems, and aims to minimize the amount of drive when moving an outboard arm, downsize the drive means and its drive source, and move the outboard arm smoothly, quickly, and without waste. It is an object of the present invention to provide a fluid handling device capable of performing movements.

"Means for Solving the Problems" In order to solve the above-mentioned problems, the present invention provides a drive member rotatably at the upper end of the base riser, and a lower movement member provided on the inboard arm. A driven member is integrally attached so as to interlock with the lower movement member, and further, the driving member and the driven member are connected by a linking member,
A driving means for rotating the driving member is provided between the driving member and the base riser.

"Operation" According to the fluid cargo handling device of the present invention, when the inboard arm is rotated relative to the base riser, the driven member is rotated by the driving member connected via the linking member,
As a result, the lower interlocking member, which is integrally fixed to the driven member, rotates with respect to the inboard arm, and as a result, the upper interlocking member, which is connected to the lower interlocking member by the connecting member, rotates, and the outboard arm accordingly rotates. rotate relative to the inboard arm.

Therefore, when the inboard arm is rotated, the outboard arm is automatically rotated in conjunction with the inboard arm without operating the driving means.

"Example" Hereinafter, a fluid cargo handling device of the present invention will be described with reference to the drawings. 1 to 4 show one embodiment of the present invention. In these figures, the same elements as those shown in the prior art are given the same reference numerals, and their explanations will be omitted.

In Fig. 1, reference numeral 1 indicates a base riser installed on a structure B such as a jetty or a wharf, 4 indicates an inboard arm, 6 indicates an outboard arm, 7 indicates a hollow rotation joint, and 10 indicates an upper sheave (upper interlocking 11 is a lower sheave (lower interlocking member). The riser pipe 1 and the inboard arm 4 are connected to each other so as to be rotatable in the horizontal direction by a hollow horizontal rotation joint 2 and to be freely rotatable in the vertical direction by a hollow vertical rotation joint 3. The inboard arm 4 and The outboard arm 6 smoothly changes and follows the load, making it possible to realize safe fluid cargo handling.

In addition, a wire rope (connection member) 12 is wound around the upper sheave IO and the lower sheave 11 so that they rotate in conjunction with each other, and by rotating the lower sheave II, the outboard arm 6 is moved inward. It can be rotated in a direction perpendicular to the board arm 4.

The inboard arm 4 is composed of a pipe portion 4a for transporting fluid, and a beam 4b fixed to the bent portion thereof extending in the opposite direction to the pipe portion 4a, and the lower hoop Il is As shown in Figure 4,
It is fixed to a shaft 2o rotatably attached to the lower end of the beam 4b, and an arm I3 is fixed to the end of the shaft 20, that is, on the opposite side of the lower hoop II across the beam 4b. A balance weight 14 is fixed to the tip of this arm 13. Furthermore, a driven sheave 2I that rotates parallel to and integrally with the lower sheave 11 is fixed to the end of the shaft body 20 on the side where the lower sheave summer 1 is fixed. Further, as shown in FIGS. 2 and 3, a drive sheave (driving member) 22 is attached to the fixed side portion 3a of the hollow vertical rotation joint 3 in the upper part of the base riser I.
A driving means 23 for rotating the driving sheave 22 is installed between the driving sheave 22 and the base riser l. The drive means 23 includes a link 2 whose one end is pivotally connected to the drive sheave 22.
3a and a link 23b whose one end is pivotally connected to the fixed side portion 3a of the hollow vertical rotation joint 3 on the side of the base riser 1, and the other end of the link 23b is connected with a pin to form a ■-shaped link mechanism, and the V-shaped link The tip of the piston rod 23d of the hydraulic cylinder 23c pivotally connected to the fixed side portion 3a is connected to the pin connecting part of the mechanism, and the driving sheave 22 is rotationally driven by operating the hydraulic cylinder 23c. be. A wire rope (coupling member) 24 is wound around the driven sheave 21 and the driving sheave 22.

Although not shown, there is a gap between the inboard arm 4 or the movable side portion 3b of the hollow vertical rotation joint 3 and the fixed side portion 3a of the hollow vertical rotation joint 3. and the fixed side portion 3a of the hollow vertical rotation joint 3 are provided with vertical drive means and horizontal drive means for an inboard arm having the same configuration as the drive means 23 described above, respectively.

Next, the operation of the fluid cargo handling apparatus of this embodiment configured as described above will be explained mainly using FIG. 1 and FIG. 3.

FIG. 1(A) shows cargo handling by connecting the hollow rotation joint 7 to the cargo handling pipe 15 of the tanker T via the coupler 7a, and the inboard arm 4 is in a substantially horizontal state. The outboard arm 6 has a large rotation angle (θ+
+ (9t) (θ+, e 2 is the angle of each arm 4.6 with respect to the vertical line). When the cargo handling work is completed or an emergency situation occurs, the tanker T
When the fluid handling device is to be separated from the container, the vertical drive means (not shown) of the inboard arm is actuated to move the inboard arm 4 to the upper position shown in FIG. Rotate. At this time, as shown in FIG. 3, the driven sheave 21 moves in the direction of arrow Y together with the beam 4b integrated with the inboard arm 4, so the driven sheave 21 and the drive means 23 are in a stopped state without operating. The cable-shaped body 24 wound around the drive sheave 22 in the position is now wound around the drive sheave 22, and the drive sheave 22 rotates with respect to the beam 4b in the X direction at an angle equal to the rotation angle of the inboard arm 4. move. When the drive sheave 22 rotates in the X direction, the lower sheave 11 integrally connected to the driven sheave 21 rotates, and the upper sheave 10 further rotates via the wire rope 12.

As a result, the outboard arm 6 is rotated so as to be folded toward the inboard arm 4 by an angle equal to the rotation angle of the inboard arm 4.

Therefore, the outboard arm 6 is shown in (b) in Figure 1.
At this position, the rotation angle θ3 with respect to the vertical direction is the same as the rotation angle θ1 in the state of (a) in Figure 1, and the inboard arm 4 is in a state where it does not rotate with respect to the ground, and the inboard arm 4 makes a small rotation with respect to the vertical direction. When it forms an angle θ4, it is in a substantially upright state. From this state, the hydraulic cylinder 23c of the drive means 23 is operated to rotate the drive sheave 22,
To further rotate the driven sheave 21 in the X direction via the element body 24, the outboard arm 6 rotates the lower sheave If.
, rotates with respect to the inboard arm 6 via the wire rope 12 and the upper sheave 10, forms a rotation angle θ5 with respect to the vertical direction, and shifts to the retracted state shown in FIG. 1(C). In this way, the outboard arm 6 moves from the cargo handling state to the storage state through the shortest distance.

In addition, when shifting from the storage state to the cargo handling state, after operating the drive means 23 to rotate the drive sheave 22 in the opposite direction, the inboard arm 4 is rotated by the inboard arm vertical drive means. Therefore, the inboard arm 4 and outboard arm 6 are sequentially arranged as shown in (c) in Figure 1.
→ It will move to the state of (b)-(a) through a trajectory opposite to the above process.

As described above, the fluid cargo handling device of this embodiment has the driving sheave 22 rotatably provided at the upper end of the base riser l, and the driven sheave 21 is integrally attached to the lower sheave 11.
A wire rope 24 is wound between the driving sheave 22 and the driven sheave 21, and the driving sheave 22 is rotated by a hydraulic cylinder 23c when necessary, so that the inboard arm 4 is attached to the base riser l. When the driven sheave 21 rotates in the vertical direction, the driven sheave 21 is rotationally driven by the driving sheave 22 via the cable-like body 24, and the lower sheave 11, which is integrally fixed to the driven sheave 21, is rotated against the inboard arm 4. As a result, the upper sheave 10 rotates via the wire rope 12, and the outboard arm 6 rotates relative to the inboard arm 4 in conjunction with the rotation of the inboard arm 4. , the outboard arm 6 moves through the shortest distance between a cargo handling state connected to a tanker or the like and a state on the verge of a storage state separated from the tanker or the like.

Therefore, the driving means 23 of the outboard arm 6 can operate between the state on the verge of the retracted state and the retracted state.
A small operating range is sufficient for driving the outboard arm 6, and the required stroke of the hydraulic cylinder 22c is small, so that the capacity of the hydraulic power source can be reduced. Furthermore, it has recently been required to install an accumulator to drive the loading arm in the event of power loss, but in the fluid cargo handling device of this embodiment, the accumulator is made smaller to compensate for the small amount of drive of the outboard arm. can be converted into

Note that other embodiments or technical matters other than those described above will be described below.

(1) In the embodiment, a circular upper sheave 10 fixed to the outboard arm 6 has a rotational balance mechanism for the outboard arm 6, and a circular lower sheave 11 provided at the lower end of the inboard arm 4; A case has been described in which the present invention is applied to a fluid cargo handling device configured with a wire rope 24 wound around these, but the present invention can also be applied to a fluid cargo handling device having another type of outboard arm rotation balance mechanism. Of course, you can do so. For example, as an outboard arm rotation balance mechanism, the upper and lower sheaves are replaced with polygonal cam plates, and a plurality of skewer rods and connecting rods connected with pins to form an endless shape are wound around these. It may be of the type shown in Figures 3 to 6 of Japanese Patent Publication No. 53-23536, or the arm rod may be fixed to the outboard arm, and the lower end side of the inboard arm may be used. The above-mentioned Utility Model Publication No. 53-, which is constructed by rotatably providing an outer balance on the body, and connecting the arm rod and the outer balance arm with a connecting rod.
It may also be in a link format as shown in Japanese Patent No. 25860.

(ii) In the described embodiment, a wire rope 24 as a linking member is wound around a driving sheave 22 as a driving member and a driven sheave 21 as a driven member, thereby transmitting driving force from the driving member to the driven member. However, the related structure of the driving member, driven member, and linking member is not limited to the above, but a sprocket may be used for the driving sheave and the driven sheave, a chain may be wound around this, and the driving may be performed by using a sprocket. You may also do so.

Further, the driven sheave 21 and the driven sheave 22 may be formed into a polygonal shape, and an endless element formed by connecting a skewer rod with a pin may be wound around the driven sheave 21 and the driven sheave 22. Instead of the sheave 21, a rotating link may be provided and these may be connected by a connecting rod as a linking member, as described in the above-mentioned Japanese Patent Publication No. 51-23536 and Japanese Utility Model Publication No. 5
A mechanism similar to the outboard arm rotational balance mechanism in the device disclosed in Japanese Patent No. 3-25860 can be employed.

(iii) In the above embodiment, the drive sheave 22
As a driving means for this, the link mechanism is driven by a hydraulic cylinder, but the present invention is not limited to this, and a gear may be fixed to the drive sheave 22 and rotated by a drive source such as a hydraulic motor or an air motor. The driven gears may be meshed and rotated.

"Effects of the Invention" As explained above, the fluid cargo handling device according to the present invention has a driving member rotatably provided at the upper end of the base riser.
A driven member is integrally attached to the lower interlocking member provided on the inboard arm, and the driving member and the driven member are connected by the linking member, and a drive for rotating the driving member is provided between the driving member and the base riser. When the inboard arm is rotated with respect to the base riser by providing a means, the driven member connected to the driving member via the linking member is rotated by the driving member. The interlocking member rotates with respect to the inboard arm, and as a result, the upper interlocking member connected to the lower interlocking member by the connecting member rotates, and the outboard arm accordingly rotates in a direction perpendicular to the inboard arm. As a result, when the outboard arm is separated from a tanker, etc., it does not jump up against the inboard arm like a slave device, and instead moves in the shortest possible time in conjunction with the rotation of the inboard arm. The outboard arm is moved through a distance to a state close to the retracted state, and a small movement of the outboard arm from the near retracted state to the retracted state can be easily performed by the drive means, and the drive means of the outboard arm can be easily moved by the drive means. It is possible to minimize the amount of movement and allow the outboard arm to move smoothly, quickly, and without waste, and the capacity of the drive means and its drive source can be miniaturized, which is advantageous.

[Brief explanation of the drawing]

1 to 4 show an embodiment of the fluid cargo handling device of the present invention, and FIG. 1 shows an overview of the fluid cargo handling device and is a diagram of the fluid cargo handling device for explaining the moving state thereof. A side view, FIG. 2 is a plan view of the fluid cargo handling device, and FIG. The figure shows the IV-IV cross section of Fig. 3, a side sectional view showing the connection state of the lower sheave and the fixed sheave, and Figs.
The figures show the conventional technology, and Fig. 5 is a side view showing an outline of the fluid cargo handling device, Fig. 6 is a side view of the fluid cargo handling device showing the state in which the outboard arm is flipped up, and Fig. 7 is a side view showing the fluid cargo handling device in a state where the outboard arm is flipped up. FIG. 3 is a side view of the fluid cargo handling device near a state. 1...Base riser, 4...Inboard arm, 4b...Beam, 6...Outboard arm, 10...Upper sheave , 11
... lower sheave, 12 ... wire rope, 14 ... balance weight, 21 ... driven sheave, 22 ... drive sheave, 23 ... ... Drive means, 23a, 23b... Link mechanism, 23
c...Hydraulic cylinder, 24...Cable body (wire rope).

Claims (1)

[Claims] An inboard arm is provided at the upper end of a vertically erected base riser so as to be freely rotatable in horizontal and vertical directions, and an outboard arm is provided at the tip of this inboard arm so as to be freely rotatable in a vertical direction. An upper interlocking member that rotates together with the outboard arm is provided at the tip of the board arm, and a lower interlocking member is rotatably attached near the lower end of the inboard arm to connect the upper interlocking member and the lower interlocking member. In the fluid cargo handling device, a connecting member is provided for interlocking the two, and the lower interlocking member is integrally provided with a parallel weight that interlocks with the lower interlocking member. At the same time, a driven member is integrally attached to the lower interlocking member so as to interlock with the lower interlocking member, and further, the driving member and the driven member are connected by a linking member, and the driving member and the base riser are connected together. A fluid cargo handling device characterized in that a driving means for rotating the driving member is provided between the parts.