JPH0110400Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a so-called loading arm, a fluid cargo handling device used for loading and unloading fluids onto tankers or barges, and particularly relates to the structure of a vacuum breaker.

As is well known, this type of fluid cargo handling equipment includes, for example, a riser fixed to a quay, an inboard arm whose base end is connected to the tip of the riser so as to be able to rotate horizontally and vertically, and a tip of the inboard arm. an outboard arm whose base end is vertically rotatably connected to the outboard arm; a first pipe section which is vertically rotatably connected to the outboard arm tip; and a first pipe section which is horizontally rotatably connected to the first pipe section. and a connector that is detachably connected to a manifold on a ship, for example.

In such fluid cargo handling equipment, at the end of cargo handling work, each arm is temporarily fixed in a vertical position to wait until the start of the next cargo handling work, but at this time, residual oil remains in the fluid transfer path of the outboard arm. etc. exist. Such residual oil spills out from the fluid transfer path after cargo handling operations are completed, contaminating the surrounding area and creating a risk of ignition. or,
The presence of residual oil or the like in the pipe causes the disadvantage that the weight balance of each arm, which is maintained in balance by the counterweight, is disrupted.

For this reason, conventionally, a part of the fluid transfer path of the outboard arm is opened to the atmosphere to prevent the fluid transfer path from becoming negative pressure, and to smoothly drain residual oil, etc. in the fluid transfer path. A so-called vacuum breaker is provided.

The structure of this vacuum breaker is that a part of the fluid transfer path at the base end of the outboard arm is provided with an atmosphere opening port, and a vacuum breaker valve that opens and closes the air opening is provided in the atmosphere opening port. This configuration includes means for remotely opening and closing the valve at the tip of the outboard arm.

However, in such a conventional vacuum breaker structure, the opening and closing operations of the vacuum breaker valve are performed at the tip of the outboard arm, as described above, and the tip of the outboard arm is located at the shortest ground clearance. However, since it is located at a height of about 3 meters, it is extremely difficult to operate, and its operability is poor. In addition, since the operation was performed at a high place, the work was dangerous and there were safety issues.

Therefore, in view of the above-mentioned conventional circumstances, the present invention aims to improve the operability of the vacuum breaker by devising the mounting position of the vacuum breaker operating section.

Therefore, in the present invention, one end is connected to a part of the fluid transfer path at the proximal end of the outboard arm and extends along the outboard arm to a second pipe part position constituting a coupler, and the other end is in the atmosphere. Vacuum breaker piping is provided that opens to the atmosphere, and at least a pipe portion of the piping located between the outboard arm tip and the second pipe portion is constructed of a flexible pipe, and an atmospheric opening end of the vacuum breaker piping is provided. A vacuum breaker valve for opening and closing the part is provided, and the valve and the valve operation part are supported and provided on the second pipe part, and at the connecting end of the vacuum breaker piping with the fluid transfer path, An opening/closing means remote control device having an opening/closing means for opening/closing the pipe, and having an opening/closing operation part of the opening/closing means and an operating part provided at the second pipe part position interlocked via an interlocking means. The configuration includes the following.

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 9.

In FIG. 1, 1 is a riser fixed to a quay 2, 3 is an inboard arm whose base end is connected to the tip of the riser 1 so that it can rotate horizontally and vertically, and 4 is the inboard arm 3. An outboard arm 5 has a base end vertically pivotally connected to the distal end of the outboard arm 4, and 5 is an elbow-shaped first pipe portion 5A that is vertically pivotally connected to the distal end of the outboard arm 4 via a joint 6. and an elbow-shaped second pipe part 5B which is horizontally rotatably connected to the pipe part 5A via a joint 7, and the connectors 8 and 9 are connected to the inboard arm 3 and the outboard arm 4, respectively. These arms 3, 4 are provided against
It is an outer weight to maintain each balance. The inboard arm 3 and the outboard arm 4 are each formed into a tubular shape, and each has a fluid transfer path in its inner cavity, so that fluid can be moved in the longitudinal direction of the arms 3 and 4.

2 and 3 are diagrams showing the detailed structure of the entire outboard arm 4 and the detailed structure of the connecting pipe 5, respectively. In the figures, 10 indicates a fluid transfer path at the base end of the outboard arm 4. Vacuum breaker piping with one end connected to the outside and the other end open to the atmosphere, with a steel pipe 10A extending along the outboard arm 4 to its tip, and one end connected to the steel pipe 10A via an elbow 30. The flexible pipe 10B extends from the tip of the outboard arm 4 to the position of the second pipe portion 5B.

Reference numeral 11 designates a ball valve as a vacuum breaker valve which is interposed at the open end of the flexible pipe 10B to open and close the flexible pipe 10B, and is fixedly attached to the second pipe portion 5B. On the other hand, 13 is a ball valve that is interposed at the connecting end of the vacuum breaker piping 10 to the fluid transfer path and serves as an opening/closing means for opening and closing the piping 10, and 14 is an opening/closing operation part of the ball valve 13. This is a remote control device for an opening/closing means configured in such a manner that the opening/closing means remote control device and the operating section provided at the second pipe portion 5B are interlocked via an interlocking means.

This means 14 includes a tubular shaft 22 as the opening/closing part that is rotated to open and close a valve body (not shown) in the main body of the ball valve 13;
the push-pull cable 31 as the interlocking means connected to the shaft 22; and the operation connected to the push-pull cable 31 for rotating the shaft 22 via the push-pull cable 31; Lever handle 23 as part
It consists of and.

Next, the vacuum breaker piping 10,
A structure for attaching the ball valve 11 and the means 14 for remotely operating the ball valve 13 to the outboard arm 4 and the connecting pipe 5 will be described.

In FIG. 4, a connecting pipe 15 is fixed to the outer circumferential wall of the base end of the outboard arm 4. As shown in FIG. This connecting pipe 15 is provided with a flange portion 16, and this flange portion 16 is provided with a ball valve 13.
A flange portion 17 formed at one end of the main body is fastened. A flange portion 19 connected to the base end of the steel pipe 10A of the vacuum breaker piping 10 is fastened to the flange portion 18 formed at the other end of the main body of the ball valve 13.

The base end of the steel pipe 10A is formed into a substantially U-shape from the flange portion 19, and after forming the substantially U-shape, a straight line extends along the outer peripheral wall of the outboard arm 4 in the axial direction of the arm 4. formed into a shape.

The linear portion of the steel pipe 10A is connected to a plurality of U-shaped angle members 20 fixedly attached to the outer circumferential wall of the outboard arm 4 at predetermined intervals, as shown in FIGS. 4 to 6. It is fixedly supported on the outer end surface via a U bolt 21. As shown in FIG. 7, the ball valve 11 is fixedly attached via a U-bolt 33 with a nut to the outer surface of a handle bracket 32, which will be described later, which is fixedly supported on the outer wall of the second pipe portion 5B of the connecting pipe 5. There is.

In addition, in this ball valve 11, 11A is an operating lever as a valve operating section equipped on the main body.

On the other hand, the shaft 22 of the means 14 for remotely operating the ball valve 13 is fitted and supported by a pipe support 24 fixedly attached to the outer end surface of the U-shaped angle member 20, as shown in FIGS. 4B and 5. be done.

The support structure of the shaft 22 in the U-shaped angle member 20 located at the tip of the outboard arm 4 is as shown in FIGS. 6 and 8.

That is, in the figure, a support plate 26 is fastened to the upper surface of the U-shaped angle member 20 via a shim 25 with bolts and nuts 26B. This support plate 26 is provided with a hole 26A, into which the shaft 22 is fitted. or,
A collar 27 is fitted onto the shaft 22 on the upper surface of the support plate 26 and is attached by a restraining bolt 28, thereby forming a thrust bearing for the shaft 22. Further, a cylindrical member 29 is attached to the outer periphery of the shaft 22 from the insertion portion of the support plate 26 to the vicinity of the tip. This cylindrical member 29
As shown in FIGS. 8 and 9, the upper end portion is fixed to the support plate 26, and the lower end portion is fixed to the bracket 34.

As shown in FIG. 9, the tip of the shaft 22 is supported by passing through the hole 34A of the bracket 34, and a cylindrical body 35 is fixed to the outer periphery thereof. A first link member 36 is fixed to the outer periphery of the cylinder 35, and a second link member 38 is rotatably connected to the first link member 36 via a pin 37. .

One end of the push-pull cable 31 is connected to the end of the second link member 38 on the side opposite to the pin 37, and the first and second link members 36, 3
8 constitutes a link device for rotating the shaft 22 by linear movement of the push-pull cable 31.

Next, the structure of the lever handle 23 is the third
It is constructed as shown in FIG. 7 and FIG. That is, the handle bracket 32 has a pair of parallel plate parts 39 and 40 at both end positions, and the plate parts 3
It has a structure in which a cylinder 41 is coupled to a position between the inner wall surfaces of each of the pipe parts 9 and 40, and one plate part 39 is fixed to the outer periphery of the end of the cylinder 42 which is fixed to the outer wall of the second pipe part 5B. It is fixedly attached to the second pipe part 5B by fastening bolts and nuts 44 to the flange part 43. In addition, in the fastening section using bolts and nuts 44, 45 is an insulating plate, 46 is an insulating washer, and 4 is an insulating plate.
Reference numeral 7 denotes an insulating sleeve, and a portion indicated by 48 in the figure is coated with insulating silicone rubber. A shaft 49 is mounted inside the cylindrical body 41 and has one end portion and a substantially middle portion supported by the plate portion 39 and the plate portion 40, respectively, so as to freely rotate. The lever handle 23 is fitted and attached to the tip side of the outer periphery of the protruding end of the shaft 49 from the plate portion 40. Further, a cylindrical body 50 is fixed to the base end side of the outer periphery of the protruding end portion of the shaft 49. A first link member 51 is fixed to the outer periphery of the cylinder 50, and a second link member 5 is connected to the first link member 51 via a pin 52.
3 are rotatably connected. The end of the second link member 53 on the side opposite to the pin 52 is connected to a push-pull cable 31 whose one end is connected to the second link member 38 on the outboard arm 4 side shown in FIG. The other end is connected. These first and second link members 51 and 53 constitute a link device for pulling and pushing the push-pull cable 31 by the rotational movement of the shaft 49. A shaft 49 is provided on the outer surface of the plate portion 40 of the handle bracket 32.
A handle stopper 54 is provided which has a hole 54A from which the tip protrudes. The handle stopper 54 and the plate portion 40 are connected to each other by a collar 55 and a bolt 56 at a predetermined distance. The shaft 49 is centered around a fulcrum (not shown) formed on the end surface of the lever handle 23.
An engagement lever member 57 is supported so as to be swingable in the axial direction of the lever handle 23 and is always biased toward the end surface of the lever handle 23 by a spring (not shown).
The lever handle 23 has. 2 forming an angle of 90° on the outer periphery of the handle stopper 54
There are two engagement grooves 5 in which an engagement claw 57A formed at the tip of the engagement lever member 57 can be engaged.
8 and 59 are formed with notches, and one engagement groove 59 corresponds to the tension position of the push-pull cable 31 corresponding to the rotation position of the shaft 22 that closes the valve body of the ball valve 13. The other engagement groove 58 is provided in the ball valve 13.
The push-pull cable 31 is provided in a position where the push-pull cable 31 is pushed in, which corresponds to the rotational position of the shaft 22 when the valve body is opened. A name plate 60 indicates the open and closed positions of the ball valve 13 where the lever handle 23 is located, and is fixed to the outer surface of the handle stopper 54 by the bolt 56.

Note that 61 and 62 in FIG. 3 and 63 in FIGS. 3 and 7 are holding portions for holding the push-pull cable 31 on the bracket 34, the first tube portion 5A, and the handle bracket 32, respectively. .

In the above configuration, in order to operate the vacuum breaker, first, hold the lever handle 23 with your hands, and then move the engagement lever member 57 around the fulcrum (not shown) by pushing the engagement claw 5 against the spring force.
7A is swung to disengage from the engagement groove 59 of the handle stopper 54. As a result, the lever handle 23 becomes rotatable, so it is rotated in the direction of arrow A shown in FIG. 7B, and the engaging claw 57
When A is aligned with the engagement groove 58 and the engagement lever member 57 is returned to its original position by the spring force, the engagement claw 57A is then engaged with the engagement groove 58.

Therefore, the shaft 49 rotates, whereby the push-pull cable 31 moves in the direction of arrow B shown in FIG. 7B via the first and second link members 51 and 53.
pushed in the direction. push pull cable 31
By this pushing, the second link member 38 is pushed from the two-dot chain line position to the solid line position, as shown in FIG. 9B, and the first link member 36 is swung. By the swinging of the first link member 36, the shaft 22 is held via the cylindrical body 35 in a rotational position in which the valve body of the ball valve 13 is opened. As described above, when the valve body of the ball valve 13 is in the open state, the fluid transfer path of the outboard arm 4 and the vacuum breaker piping 10 communicate with each other. Here, move the ball valve 11 to the lever 11.
If it is opened by operation A, the fluid transfer path of the outboard arm 4 will be opened to the atmosphere via the vacuum breaker piping 10, and the fluid transfer path remaining in the fluid transfer path will be opened to the atmosphere via the vacuum breaker piping 10. Oil etc. will be extracted to the outside. In addition, the engagement lever member 5
If the engaging claw 57A of No. 7 is engaged with the engaging groove 59,
The push-pull cable 31 will be pulled in the opposite direction to the above, and the shaft 22 will be pulled from the ball valve 1.
The valve body No. 3 is held in the rotational position where it is closed.

According to this configuration, the ball valve 11 interposed in the atmospheric opening of the vacuum breaker piping 10
The operation lever 11A of this, as well as the lever handle 23 for remote control of the ball valve 13 interposed at the connection end of the vacuum breaker piping 10 with the fluid transfer path, are not allowed to interfere with the movement of the coupler 5. By attaching it to the outer wall of the second pipe section 5B of the coupler 5, the vacuum breaker can be operated at a lower ground clearance than the tip of the outboard arm 4. Oil removal work can be performed easily and safely.

As explained above, the present invention includes a vacuum breaker valve that opens and closes the vacuum breaker piping that can communicate with the base end of the outboard arm via the opening and closing means, and an operating section thereof. An opening/closing means remote control device is attached to a second pipe portion of a coupler and configured to interlock an opening/closing operation portion of the opening/closing means and an operating portion provided at the second tube portion position via an interlocking means. With the provided configuration, the vacuum breaker can be operated at a low height above the ground, and has a great practical effect of improving operability and improving workability and safety.

[Brief explanation of drawings]

Fig. 1 is a front view showing the appearance of an embodiment of the fluid cargo handling device according to the present invention, Fig. 2 is a front view showing the outboard arm structure in the same embodiment, and Fig. 3 is a front view showing the structure of the outboard arm in the above embodiment. A diagram showing the structure,
A is a front view, B is a side view, FIG. 4 is a diagram showing details of section A in FIG. 2, A is a cross-sectional view, B is a longitudinal sectional view, and FIG. 6 is a sectional view taken along the line CC in FIG. 2, FIG. 7 is an enlarged view showing the vacuum breaker operating section, A is a side sectional view, B is a front sectional view, and The figure is a vertical cross-sectional view showing details of section D in FIG. 2, and FIG. 9 is a view showing details of section E in FIG. 2, where A is a front sectional view and B is a bottom view. 1... riser pipe, 3... inboard arm,
4...Outboard arm, 5...Coupler, 5A
...First pipe part, 5B... Second pipe part, 10...
Vacuum breaker piping, 10B...Flexible pipe, 11...Ball valve, 11A...
Operation lever, 13... Ball valve, 22... Shaft, 23... Lever handle, 31... Push-pull cable.

Claims (1)

[Scope of utility model registration request] a riser pipe, an inboard arm whose base end is connected to the tip of the riser pipe so that it can freely rotate horizontally and vertically; an outboard arm whose base end is connected to the tip of the inboard arm so that it can freely rotate vertically; A coupler having a first pipe part vertically rotatably connected to the tip of the outboard arm and a second pipe part horizontally rotatably connected to the first pipe part. In fluid handling equipment,
Vacuum breaker piping is provided, one end of which is connected to a portion of the fluid transfer path at the base end of the outboard arm, extends along the outboard arm to the second pipe portion position, and the other end is open to the atmosphere. , at least a pipe section located between the outboard arm tip and the second pipe section of the piping is constituted by a flexible pipe, and a vacuum breaker that opens and closes the part is provided at the atmosphere opening end of the vacuum breaker piping. A valve is provided, and the valve and the valve operation part are supported and provided on the second pipe part, and an opening/closing means for opening and closing the pipe is provided at the connecting end of the vacuum breaker pipe with the fluid transfer path. and an opening/closing means remote control device configured to interlock an opening/closing operation part of the opening/closing means with an operating part provided at the second pipe portion position via an interlocking means. Cargo handling equipment.