JPS5898512A - Elevation device for floating structures - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is applicable to a lifting device for water products such as a jackup rig or a jackshipper type purge.

For example, as shown in Figures 1 and 2, it consists of six pipes 1 (1 person) to (IC), jump pipes (IA) to (IC), and a connecting rod (1D) that connects all pipes. 6 jack units that raise and lower the leg (1) by reciprocating the binions (2A) that are engaged with the leg (Ll) and the vias (IA) to (1C). ) (
! : % In a watercraft having a leg lifting guy 1' device 1f13), each jack unit t2) a
%Not only the weight d of the water ditch shield, but also the force exerted by the wind and waves on the leg t1). Here, and t leg (1
) is bent around X-X-, a vertical couple (+W') in the direction occurs in the pipe (1B),
A downward traveling couple (-1#') is generated in the pipe (IC), and the jacking unit (2
) will act on the force W+W+, and the force W-41 will act on the jacking unit (2)K that supports the pipe (1C). Therefore, a non-negligible force imbalance occurs between the two pipes (IB) and (IC).

Therefore, in the past, the model of each jacking unit (2) was selected so as to satisfy rt maximum force/W + * +, but this would make each jacking unit (2) larger and increase the cost. .

The present invention provides a system for floating #It structures that solves these problems, and the problem lies in the construction of a mechanism for raising and lowering the legs provided on the main body of the floating structure. The up unit is configured to be supported via the low V-tty, reads the output of each low F, calculates the average value of each output value, and calculates the average value and each load cell. According to this configuration, a control device is provided which compares the output value of The ridges acting on each jacking unit can be averaged, and each jacking unit can be made smaller and costs can be reduced.

Hereinafter, an example of one R: light will be described based on FIG. 2 and the following figures. (5) is the main body of the structure, and the penetration large + 6) IC is inserted into the leg tl). In addition, each pipe (IA) to (IC) on the upper surface of the floating structure main body (5) VC opposing locations 1criL
A letter-shaped fixed body (7) is fixed to the upper horizontal part of each fixed body (7), and a jack unit (2, ) to (23) f hanging. In addition, the binions (2A) of the valley jack units (21) to (2,) are attached to the jacks (9) fixed to each pipe (1A) to (1C).
). Uυ is each ja nkyunitz) (2
, ) to (), ) and the upper surface of the floating structure main body (5) is the lower shock rose F. In Figure 5 +
111 is a control device, each row VtJIL/(LC
, ) to (LC8), and calculate each output value (v
Calculate the average value (Vmean) of l) to (v3), and calculate the average value (Vmean) and each load-ttV(LC,
) ~(LC,) output value (/l) ~('/S) and gold ratio INL, average value (Vmean) Yo? ) Output i
(Vt) to (V,) large jack unit (2□
) to (2,) are jacked up, and the jacking units (2,) to (2,) whose output values are smaller than the average value are jacked down.

The action of #4 above will be explained. First, the floating structure itself (5
), VC increases each jack unit (2□
) to (23) to rotate each binion (two people) in the direction of arrow (A). Then each load cell (LC
,) to (LC,) receive a compressive force via the upper shock pad 18), and a voltage corresponding to the pressure is output from each load cell (LC,) to (LCl) to the control device [111+11]. . In the control device 4 dll, as shown in the $16 diagram, each load cell (r = c, > ~ < r = cs) o output < v, ) ~ (v,) Ode o-trs nasa n, then each output The average value (Vmean
) is calculated, and the average value (Vmean) is compared with each output (vl) to (V, ). If it is larger than (V,) or (Vmean), the IC load on the jacking unit (21) is too high, so the control device tllll [lowers the driving force of the jacking unit (2X)]. , make you feel down. Also (v2
) is smaller than (Vmean), the jacking unit (2,) has no K load, so
WA Goso djt 1111 IC improves the jacking unit (2)'s g power and increases the jacking. Compare (V,) and (rmean) in the same way, and if there is a difference, install the jacking unit (2,) First, the average value (Vmsan/) is calculated based on the output (Vl) to (V,) after the jacking down or jacking up, and the constant control described above is performed again. If you want to raise the 6 jack units (2 Then, each load section pv(LC,) to (LCs) receives a tensile force.The same applies to the subsequent control, and each jack unit (21) to (23) receives a tensile force. This load will be approximately averaged out.

As described above, by using the floating DL structure lift rope according to the present invention, the load acting on each jack unit can be averaged by the control of the control device.

Therefore, the load will not be concentrated on one jack unit, and each jack unit can be downsized and costs can be reduced.

[Brief explanation of the drawing]

1 and 2 are a schematic plan view and a schematic side view for explaining the state of the force acting on the leg. Figure 5 and the following figures show an embodiment of the present invention, and Figure 6
A partially cutaway front view of the main part, Figure 4 is a flat view of the main part [ff1m
, Figure 85 is a configuration diagram of the control system of the jack unit, and Figure @6 is a flowchart of the control device. <1)...Leg (111), (2,) ~ (2,)・
... Jackunitz), +5) ... floating structure body, (11) ... control A device, (LC,) ~ (LC,)
...Loadse V Agent Hiroshi Morimoto Figure 3 Figure 4 Diagram Figure 6 Procedural Amendment (Koto) Patent applicant name (511) Hitachi Zosen Co., Ltd. 4th representative Address 1-6-17 Tachiuribori, Nishi-ku, Osaka-shi Amano Building Telephone Osaka 06 (532) 4025 (main) Name (6808) ) Yoshihiro Moto, who ran away from the patent attorney 5,
Date (shipment date) Month, Day 6, Showa Number of inventions increased by the amendment 7 Column 1 of claims of the specification subject to the amendment: Multiple jack-ups for raising and lowering legs provided on the main body of the floating structure Each unit is configured to be supported via a load cell, the output of each load cell is read, the average value of each output value is calculated, the average value is compared with the output value of each load cell, and the average value is 1. A lifting device for a floating structure, comprising a control device that jacks down a jacking unit with a larger output value and jacks up a jacking unit with a smaller output value than the average value. Procedural Amendment (Mouse) 1. Indication of the case Showa 56 Chief Priest's Permit No. 1943002, Name of the invention Lifting device for floating structures 3, Person making the amendment Relationship to the case Name of patent applicant (511) Hitachi Zosen Corporation 4 , Agent Address: Tan-Amano Building, 1-6-17 Tachiuribori, Nishi-ku, Osaka (8) Tel: Osaka 06 (532) 4025 (Main)
Name (6808) Yoshihiro Moto 5, a patent attorney
date (shipment date) Showa year, month, day 6, number of inventions increased by amendment 7, column for detailed explanation of invention of Omei #I book subject to amendment■ Page 3, line 9, page 4 In the 15th line, the phrase ``Jatsuki up'' is corrected to ``RJatsuki down''. ■Page 3, line 10, page 4, line 16 to line 17 of the same page, the words "Jackie Down" are corrected to "Jackie Amplifier." ■In the last line of the third page, the phrase "L-shaped fixed body (7)" is corrected to "fixed body (7) that supports the jack unit." ■Delete "Next K..." from line 5 on page 6 to line 12 on the same page.

Claims (1)

[Claims] 1. Raise and lower the cape provided on the main body of the floating structure [The jack-up unit is configured to be supported via a load cell, reads the output of each load cell, and calculates the output of each load cell. Calculate the average uit value, compare the average value with the output value of each low F7, and jack up the jacking unit whose output value is larger than the average value, and jack down the jacking unit whose output value is smaller than the average value. A lifting device for a floating structure, which is equipped with a control device to control the floating structure.