CN109183765B - Control logic method for continuous lifting platform oil cylinder - Google Patents
Control logic method for continuous lifting platform oil cylinder Download PDFInfo
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- CN109183765B CN109183765B CN201811060487.7A CN201811060487A CN109183765B CN 109183765 B CN109183765 B CN 109183765B CN 201811060487 A CN201811060487 A CN 201811060487A CN 109183765 B CN109183765 B CN 109183765B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B17/00—Artificial islands mounted on piles or like supports, e.g. platforms on raisable legs or offshore constructions; Construction methods therefor
- E02B17/04—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction
- E02B17/08—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering
- E02B17/0809—Equipment specially adapted for raising, lowering, or immobilising the working platform relative to the supporting construction for raising or lowering the equipment being hydraulically actuated
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- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses a logic control method for a continuous lifting platform oil cylinder, which realizes continuous action of a pile leg by controlling the extension and retraction of an upper lifting oil cylinder and a lower lifting oil cylinder, the extension and retraction speeds of the upper lifting oil cylinder and the lower lifting oil cylinder, and the insertion and extraction of an upper bolt and a lower bolt, and controls the running speed of the pile leg during action. The control logic method adopted by the invention comprehensively considers the power and speed requirements when the pile leg continuously acts, particularly the process conversion of the conversion stress of the upper ring beam and the lower ring beam, and the control precision and the working efficiency of the lifting system are greatly improved.
Description
Technical Field
The invention relates to the technical field of self-elevating ocean engineering platforms, in particular to a hydraulic control logic method of a hydraulic bolt elevating platform.
Background
When the offshore engineering platform is constructed on water, the platform is lifted to leave the water surface by standing on a water bottom stratum through four pile legs with pile shoes, so that the platform is not influenced by ocean currents and waves during construction.
The lifting of the platform and the lifting of the pile legs are realized by a lifting device, namely, the pile legs move by the cyclic extension and contraction of the lifting oil cylinders and the cyclic extension and contraction of the bolt oil cylinders arranged on the pile legs.
At present, a stepping type lifting system is generally used in the industry, a continuous type lifting system is rarely adopted, and a hydraulic scheme adopted by the continuous type lifting system is compared with a stepping type hydraulic scheme generally used in the industry at present, because continuous action of pile legs is realized, and requirements of customers on speed, load and the like of each action are required to be met. Therefore, the control accuracy, the power requirement, the system matching, the element model selection calculation and the like of the hydraulic system are difficult to increase in geometric progression.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a control logic method of a continuous lifting platform oil cylinder, so that the control precision and the working efficiency of a lifting system are improved.
In order to solve the technical problems, the invention adopts the following technical scheme: a control logic method of a continuous lifting platform oil cylinder is characterized in that pile legs are continuously moved by controlling the extension and retraction of an upper lifting oil cylinder and a lower lifting oil cylinder, controlling the extension and retraction speeds of the upper lifting oil cylinder and the lower lifting oil cylinder, and controlling the insertion and extraction of an upper bolt and a lower bolt, and controlling the running speed of the pile legs during the movement;
when the upper lifting oil cylinder extends or retracts, the pile leg is driven to ascend or fall; in the process of lifting or falling of the pile leg, the lower lifting oil cylinder retracts or extends differentially; then the lower lifting oil cylinder is converted into the same action as the lifting oil cylinder, the speed is accelerated to the same speed as the lifting oil cylinder, and the lower bolt is inserted into the bolt hole of the pile leg; the lifting oil cylinder runs in an accelerating or decelerating way to enable the upper plug pin to be in an unstressed state, and then the upper plug pin is pulled out; the lifting oil cylinder completes one action of driving the pile leg to rise or fall, and the lower lifting oil cylinder continues to drive the pile leg to rise or fall; the ascending and descending oil cylinder retracts in a differential mode or extends out in a differential mode; then the ascending and descending oil cylinder is converted into the action which is the same as that of the lower ascending and descending oil cylinder, and the speed is accelerated to the speed which is the same as that of the lower ascending and descending oil cylinder; the upper bolt is inserted into the bolt hole of the pile leg; the lower lifting oil cylinder operates in an acceleration or deceleration mode to enable the lower plug pin to be in an unstressed state, and then the lower plug pin is pulled out; the lower lifting oil cylinder completes the action of driving the pile leg to ascend or fall once, and the ascending and descending oil cylinder drives the pile leg to ascend or fall again; so as to reciprocate.
Further, the specific process of controlling the pile leg to descend is as follows:
(1) fixedly connecting the cylinder bodies of the upper lifting oil cylinder and the lower lifting oil cylinder with the ship body, and respectively connecting the rod ends of the pistons with the upper ring beam and the lower ring beam; the upper ring beam and the lower ring beam are respectively connected with the pile leg through an upper bolt and a lower bolt, and the pile leg is provided with pin shaft holes with equal pitch; the upper bolt or the lower bolt extends out and then is inserted into a bolt shaft hole of the pile leg, and the pile leg and the upper ring beam or the lower ring beam lift together; the upper bolt or the lower bolt retracts, and the upper ring beam or the lower ring beam lifts along the pile leg;
(2) in 0-213s, the upper bolt is inserted into a bolt hole of the pile leg, the lower bolt is in a pull-out state, the ascending and descending oil cylinder controls the upper ring beam to fall at a constant speed, and a piston rod of the lower lifting oil cylinder extends out in a differential mode and is in place in the process of the uniform falling of the upper ring beam;
(3) within 0-15s, the ascending and descending oil cylinder controls the upper ring beam to continuously descend at a constant speed, the upper bolt keeps an inserting state, the piston rod of the lower lifting oil cylinder stops acting, and the lower bolt keeps a retracting state;
(4) within 0-3s, the ascending and descending oil cylinder controls the upper ring beam to continuously descend at a constant speed, the upper bolt keeps an inserted state, the piston rod of the lower lifting oil cylinder retracts for a certain distance at a speed which is accelerated to be consistent with the falling speed of the piston rod of the ascending and descending oil cylinder, and the lower bolt reaches the pile leg surface;
(5) within 0-2s, the ascending and descending oil cylinder controls the upper ring beam to continuously descend at a constant speed, the upper bolt keeps an inserted state, and the lower lifting oil cylinder controls the lower ring beam to descend at a speed consistent with that of the upper ring beam; inserting a lower bolt;
(6) the lifting oil cylinder is accelerated to fall within 0-3s, the upper bolt is kept inserted and is in an unstressed state, the lower lifting oil cylinder drives the lower ring beam to fall at a constant speed, and the lower bolt is inserted and stressed;
(7) within 0-3s, the ascending and descending oil cylinder keeps falling at the speed accelerated in the step (6), the upper bolt is pulled out, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps an inserting state;
(8) the lifting oil cylinder extends out in a differential mode within 0-213s and is in place, the upper bolt keeps in a pulling-out state, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps in a plugging-in state;
(9) within 0-15s, the lifting oil cylinder stops acting, the upper bolt keeps in a pulling-out state, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps in a plugging-in state;
(10) within 0-3s, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps an inserted state; the upper lifting oil cylinder is accelerated to the speed consistent with the falling speed of the piston rod of the lower lifting oil cylinder and retracts for a certain distance, and the upper bolt reaches the pile leg surface;
(11) within 0-2s, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps an inserted state; the upper lifting oil cylinder drives the upper ring beam to fall at a speed consistent with the falling speed of the lower ring beam, and the upper bolt is inserted;
(12) within 0-3s, the lower lifting oil cylinder is accelerated; the lower bolt keeps inserting, but does not receive the atress, rises and falls the hydro-cylinder and continues to drive and go up the ring beam and fall at the uniform velocity, goes up the bolt and keeps the inserted state:
(13) and (5) repeating the actions from the step (2) to the step (12).
Further, the speed of the ascending and descending oil cylinder and the descending oil cylinder when falling at constant speed is 30m/h, which is consistent with the running speed of the pile leg.
Further, the running distance of the lower lifting oil cylinder in the step (4) is 25 mm.
Further, the upper lifting oil cylinder is accelerated in the step (6), and the movement distance in 0-3s is 60-86 mm.
Further, the running distance of the upper lifting oil cylinder in the step (10) is 25 mm.
Further, in the step (12), the lower lifting oil cylinder is accelerated, and the movement distance in 0-3s is 60-86 mm.
Furthermore, the hydraulic bolt lifting system of the continuous lifting platform comprises pile legs, an upper ring beam bolt, an upper ring beam lifting oil cylinder, a lower ring beam bolt and a lower ring beam lifting oil cylinder; the cylinder barrels of the upper ring beam lifting oil cylinder and the lower ring beam lifting oil cylinder are fixedly connected with the ship body, and the piston rod end is respectively connected with the upper ring beam and the lower ring beam; the pile legs are provided with pin shaft holes with equal pitch; an upper ring beam bolt and a lower ring beam bolt are respectively arranged in the upper ring beam and the lower ring beam.
Furthermore, the upper ring beam bolt and the lower ring beam bolt respectively comprise bolts and driving cylinders for driving the bolts to stretch.
Furthermore, the upper ring beam bolt and the lower ring beam bolt are electric bolts.
The invention has the beneficial effects that: the control logic method adopted by the invention comprehensively considers the power and speed requirements when the pile leg continuously acts, particularly the process conversion of the conversion stress of the upper ring beam and the lower ring beam, and the control precision and the working efficiency of the lifting system are greatly improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a diagram of upper ring beam cylinder speed/time in one working cycle of the pile placing working condition.
Fig. 2 is a diagram of the speed/time of the lower ring beam cylinder in one working cycle of the pile placing working condition.
Detailed Description
The technical solution of the present invention will be clearly and completely described by the following detailed description.
The ocean working platform adopts a continuous hydraulic lifting scheme, wherein a hydraulic bolt lifting system of the continuous lifting platform is shown in figure 1 and comprises pile legs 11, an upper ring beam bolt 12, an upper ring beam 13, an upper ring beam lifting oil cylinder 14, a lower ring beam 17, a lower ring beam bolt 15 and a lower ring beam lifting oil cylinder 16. The cylinder barrels of the upper ring beam lifting oil cylinder 14 and the lower ring beam lifting oil cylinder 16 are fixedly connected with the ship body, and the piston rod ends of the upper ring beam lifting oil cylinder and the lower ring beam lifting oil cylinder are respectively connected with the upper ring beam and the lower ring beam. The spud leg 11 is provided with pin shaft holes with equal pitch, and the upper ring beam bolt 12 and the lower ring beam bolt 15 are respectively arranged in the upper ring beam and the lower ring beam. When the platform is used for pile placing, pile pressing, platform lifting and the like, all actions are realized by means of the cyclic extension/retraction of the upper ring beam lifting oil cylinder and the lower ring beam lifting oil cylinder and by means of inserting and pulling pin shaft holes in pile legs by means of pin devices arranged in the upper ring beam and the lower ring beam.
When the upper lifting oil cylinder extends or retracts, the pile leg is driven to ascend or fall; in the process of lifting or falling of the pile leg, the lower lifting oil cylinder retracts or extends differentially; then the lower lifting oil cylinder is converted into the same action as the lifting oil cylinder, the speed is accelerated to the same speed as the lifting oil cylinder, and the lower bolt is inserted into the bolt hole of the pile leg; the lifting oil cylinder runs in an accelerating or decelerating way to enable the upper plug pin to be in an unstressed state, and then the upper plug pin is pulled out; the lifting oil cylinder completes one action of driving the pile leg to rise or fall, and the lower lifting oil cylinder continues to drive the pile leg to rise or fall; the ascending and descending oil cylinder retracts in a differential mode or extends out in a differential mode; then the ascending and descending oil cylinder is converted into the action which is the same as that of the lower ascending and descending oil cylinder, and the speed is accelerated to the speed which is the same as that of the lower ascending and descending oil cylinder; the upper bolt is inserted into the bolt hole of the pile leg; the lower lifting oil cylinder operates in an acceleration or deceleration mode to enable the lower plug pin to be in an unstressed state, and then the lower plug pin is pulled out; the lower lifting oil cylinder completes the action of driving the pile leg to ascend or fall once, and the ascending and descending oil cylinder drives the pile leg to ascend or fall again; so as to reciprocate.
The length of a single pile of a lifting platform leg can reach more than 90m generally, the pitch on the leg is 2m, and the speed of the leg is set to be 30 m/h. Taking the pile placing working condition as an example, the logic method for controlling the lifting oil cylinder/bolt of the upper ring beam and the lower ring beam in one action cycle process is as follows:
(1) fixedly connecting the cylinder bodies of the upper lifting oil cylinder and the lower lifting oil cylinder with the ship body, and respectively connecting the rod ends of the pistons with the upper ring beam and the lower ring beam; the upper ring beam and the lower ring beam are respectively connected with the pile leg through an upper bolt and a lower bolt, and the pile leg is provided with pin shaft holes with equal pitch; the upper bolt or the lower bolt extends out and then is inserted into a bolt shaft hole of the pile leg, and the pile leg and the upper ring beam or the lower ring beam lift together; the upper bolt or the lower bolt retracts, and the upper ring beam or the lower ring beam lifts along the pile leg;
(2) in 0-213s, the upper bolt is inserted into a bolt hole of the pile leg, the lower bolt is in a pull-out state, the ascending and descending oil cylinder controls the upper ring beam to fall at a constant speed, and a piston rod of the lower lifting oil cylinder extends out in a differential mode and is in place in the process of the uniform falling of the upper ring beam;
(3) within 0-15s, the ascending and descending oil cylinder controls the upper ring beam to continuously descend at a constant speed, the upper bolt keeps an inserting state, the piston rod of the lower lifting oil cylinder stops acting, and the lower bolt keeps a retracting state;
(4) within 0-3s, the ascending and descending oil cylinder controls the upper ring beam to continuously descend at a constant speed, the upper bolt keeps an inserted state, the piston rod of the lower lifting oil cylinder retracts when accelerating to a speed consistent with the descending speed of the piston rod of the ascending and descending oil cylinder, the running distance is 25mm, and the lower bolt reaches the pile leg surface;
(5) within 0-2s, the ascending and descending oil cylinder controls the upper ring beam to continuously descend at a constant speed, the upper bolt keeps an inserted state, and the lower lifting oil cylinder controls the lower ring beam to descend at a speed consistent with that of the upper ring beam; inserting a lower bolt;
(6) the ascending and descending oil cylinder falls down in an accelerated manner within 0-3s, the movement distance within 0-3s is 60-86mm, the upper bolt is kept inserted and is in an unstressed state, the lower lifting oil cylinder drives the lower ring beam to fall at a constant speed, and the lower bolt is inserted and stressed;
(7) within 0-3s, the ascending and descending oil cylinder keeps falling at the speed accelerated in the step (6), the upper bolt is pulled out, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps an inserting state;
(8) the lifting oil cylinder extends out in a differential mode within 0-213s and is in place, the upper bolt keeps in a pulling-out state, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps in a plugging-in state;
(9) within 0-15s, the lifting oil cylinder stops acting, the upper bolt keeps in a pulling-out state, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps in a plugging-in state;
(10) within 0-3s, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps an inserted state; the upper lifting oil cylinder is accelerated to retract at the speed consistent with the falling speed of the piston rod of the lower lifting oil cylinder, the running distance is 25mm, and the upper plug pin reaches the pile leg surface;
(11) within 0-2s, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps an inserted state; the upper lifting oil cylinder drives the upper ring beam to fall at a speed consistent with the falling speed of the lower ring beam, and the upper bolt is inserted;
(12) within 0-3s, the lower lifting oil cylinder is accelerated; the movement distance is 60-86mm within 0-3 s; the lower bolt keeps inserting, but does not receive the atress, rises and falls the hydro-cylinder and continues to drive and go up the ring beam and fall at the uniform velocity, goes up the bolt and keeps the inserted state:
(13) and (5) repeating the actions from the step (2) to the step (12).
The speed of the upper lifting oil cylinder and the lower lifting oil cylinder when falling at constant speed is 30m/h, which is consistent with the running speed of the pile leg.
The marching type operating system that present trade used, is putting the stake operating mode equally, and its lift cylinder and bolt action cycle are: … … is inserted into fixed ring beam bolt (pull out of movable ring beam bolt oil cylinder) -the lift oil cylinder begins to extend out and reaches the maximum position-insert of movable ring beam bolt oil cylinder (pull out of fixed ring beam bolt oil cylinder) -retract of lift oil cylinder and reaches the minimum position-insert of fixed ring beam bolt (pull out of movable ring beam bolt oil cylinder)
As can be seen from the above, the leg movement of the step-by-step type elevating system is intermittent, and compared with the continuous type elevating system, the efficiency of the continuous type elevating system is greatly improved, and the leg movement is continuous. Namely, the pile legs move through the cross circulating action of the two groups of oil cylinders.
The above-mentioned embodiments are merely descriptions of the preferred embodiments of the present invention, and do not limit the concept and scope of the present invention, and various modifications and improvements made to the technical solutions of the present invention by those skilled in the art should fall into the protection scope of the present invention without departing from the design concept of the present invention, and the technical contents of the present invention as claimed are all described in the technical claims.
Claims (10)
1. A control logic method of a continuous lifting platform oil cylinder is characterized by comprising the following steps: the pile leg continuous action is realized by controlling the extension and retraction of the upper lifting oil cylinder and the lower lifting oil cylinder, the extension and retraction speeds of the upper lifting oil cylinder and the lower lifting oil cylinder and the insertion and extraction of the upper bolt and the lower bolt, and the running speed of the pile leg during the action is controlled;
when the upper lifting oil cylinder extends or retracts, the pile leg is driven to ascend or fall; in the process of lifting or falling of the pile leg, the lower lifting oil cylinder retracts or extends differentially; then the lower lifting oil cylinder is converted into the same action as the lifting oil cylinder, the speed is accelerated to the same speed as the lifting oil cylinder, and the lower bolt is inserted into the bolt hole of the pile leg; the lifting oil cylinder runs in an accelerating or decelerating way to enable the upper plug pin to be in an unstressed state, and then the upper plug pin is pulled out; the lifting oil cylinder completes one action of driving the pile leg to rise or fall, and the lower lifting oil cylinder continues to drive the pile leg to rise or fall; the ascending and descending oil cylinder retracts in a differential mode or extends out in a differential mode; then the ascending and descending oil cylinder is converted into the action which is the same as that of the lower ascending and descending oil cylinder, and the speed is accelerated to the speed which is the same as that of the lower ascending and descending oil cylinder; the upper bolt is inserted into the bolt hole of the pile leg; the lower lifting oil cylinder operates in an acceleration or deceleration mode to enable the lower plug pin to be in an unstressed state, and then the lower plug pin is pulled out; the lower lifting oil cylinder completes the action of driving the pile leg to ascend or fall once, and the ascending and descending oil cylinder drives the pile leg to ascend or fall again; so as to reciprocate.
2. The logic method of claim 1 for controlling a continuous lift platform cylinder, comprising: the specific process of controlling the pile leg to descend is as follows:
(1) fixedly connecting the cylinder bodies of the upper lifting oil cylinder and the lower lifting oil cylinder with the ship body, and respectively connecting the rod ends of the pistons with the upper ring beam and the lower ring beam; the upper ring beam and the lower ring beam are respectively connected with the pile leg through an upper bolt and a lower bolt, and the pile leg is provided with pin shaft holes with equal pitch; the upper bolt or the lower bolt extends out and then is inserted into a bolt shaft hole of the pile leg, and the pile leg and the upper ring beam or the lower ring beam lift together; the upper bolt or the lower bolt retracts, and the upper ring beam or the lower ring beam lifts along the pile leg;
(2) in 0-213s, the upper bolt is inserted into a bolt hole of the pile leg, the lower bolt is in a pull-out state, the ascending and descending oil cylinder controls the upper ring beam to fall at a constant speed, and a piston rod of the lower lifting oil cylinder extends out in a differential mode and is in place in the process of the uniform falling of the upper ring beam;
(3) within 0-15s, the ascending and descending oil cylinder controls the upper ring beam to continuously descend at a constant speed, the upper bolt keeps an inserting state, the piston rod of the lower lifting oil cylinder stops acting, and the lower bolt keeps a retracting state;
(4) within 0-3s, the ascending and descending oil cylinder controls the upper ring beam to continuously descend at a constant speed, the upper bolt keeps an inserted state, the piston rod of the lower lifting oil cylinder retracts for a certain distance at a speed which is accelerated to be consistent with the falling speed of the piston rod of the ascending and descending oil cylinder, and the lower bolt reaches the pile leg surface;
(5) within 0-2s, the ascending and descending oil cylinder controls the upper ring beam to continuously descend at a constant speed, the upper bolt keeps an inserted state, and the lower lifting oil cylinder controls the lower ring beam to descend at a speed consistent with that of the upper ring beam; inserting a lower bolt;
(6) the ascending and descending oil cylinder falls down in an accelerated manner within 0-3s, the upper bolt is kept inserted and is in an unstressed state, the lower ascending and descending oil cylinder drives the lower ring beam to fall at a constant speed, and the lower bolt is kept inserted and is in a stressed state;
(7) within 0-3s, the ascending and descending oil cylinder keeps falling at the speed accelerated in the step (6), the upper bolt is pulled out, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps an inserting state;
(8) the lifting oil cylinder extends out in a differential mode within 0-213s and is in place, the upper bolt keeps in a pulling-out state, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps in a plugging-in state;
(9) within 0-15s, the lifting oil cylinder stops acting, the upper bolt keeps in a pulling-out state, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps in a plugging-in state;
(10) within 0-3s, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps an inserted state; the upper lifting oil cylinder is accelerated to the speed consistent with the falling speed of the piston rod of the lower lifting oil cylinder and retracts for a certain distance, and the upper bolt reaches the pile leg surface;
(11) within 0-2s, the lower lifting oil cylinder continues to drive the lower ring beam to fall at a constant speed, and the lower bolt keeps an inserted state; the upper lifting oil cylinder drives the upper ring beam to fall at a speed consistent with the falling speed of the lower ring beam, and the upper bolt is inserted;
(12) within 0-3s, the lower lifting oil cylinder is accelerated; the lower bolt keeps inserting, but does not receive the atress, rises and falls the hydro-cylinder and continues to drive and go up the ring beam and fall at the uniform velocity, goes up the bolt and keeps the inserted state:
(13) and (5) repeating the actions from the step (2) to the step (12).
3. The logic method of claim 2, wherein the logic method comprises: the speed of the upper lifting oil cylinder and the lower lifting oil cylinder when falling at constant speed is 30m/h, which is consistent with the running speed of the pile leg.
4. The logic method of claim 2, wherein the logic method comprises: and (4) the running distance of the lower lifting oil cylinder in the step (4) is 25 mm.
5. The logic method of claim 2, wherein the logic method comprises: and (6) accelerating the upper lifting oil cylinder, wherein the movement distance in 0-3s is 60-86 mm.
6. The logic method of claim 2, wherein the logic method comprises: and (5) the running distance of the upper lifting oil cylinder in the step (10) is 25 mm.
7. The logic method of claim 2, wherein the logic method comprises: and (3) accelerating the lower lifting oil cylinder in the step (12), wherein the movement distance in 0-3s is 60-86 mm.
8. The logic method of claim 2, wherein the logic method comprises: the hydraulic bolt lifting system of the continuous lifting platform comprises pile legs, an upper ring beam bolt, an upper ring beam lifting oil cylinder, a lower ring beam bolt and a lower ring beam lifting oil cylinder; the cylinder barrels of the upper ring beam lifting oil cylinder and the lower ring beam lifting oil cylinder are fixedly connected with the ship body, and the piston rod end is respectively connected with the upper ring beam and the lower ring beam; the pile legs are provided with pin shaft holes with equal pitch; an upper ring beam bolt and a lower ring beam bolt are respectively arranged in the upper ring beam and the lower ring beam.
9. The logic method of claim 8, wherein the logic method comprises: and the upper ring beam bolt and the lower ring beam bolt respectively comprise bolts and driving cylinders for driving the bolts to stretch.
10. The logic method of claim 8, wherein the logic method comprises: the upper ring beam bolt and the lower ring beam bolt are electric bolts.
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| CN201811060487.7A CN109183765B (en) | 2018-09-12 | 2018-09-12 | Control logic method for continuous lifting platform oil cylinder |
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| CN201811060487.7A CN109183765B (en) | 2018-09-12 | 2018-09-12 | Control logic method for continuous lifting platform oil cylinder |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101196002A (en) * | 2006-12-05 | 2008-06-11 | 中国石化集团胜利石油管理局钻井工艺研究院 | Repeatedly-usable elevator apparatus |
| CN102162233A (en) * | 2011-02-21 | 2011-08-24 | 中国海洋石油总公司 | Continuous stepping hydraulic lifting device and method |
| US8657532B2 (en) * | 2006-08-30 | 2014-02-25 | E. John Greeves | Method and apparatus for elevating a marine platform |
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2018
- 2018-09-12 CN CN201811060487.7A patent/CN109183765B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8657532B2 (en) * | 2006-08-30 | 2014-02-25 | E. John Greeves | Method and apparatus for elevating a marine platform |
| CN101196002A (en) * | 2006-12-05 | 2008-06-11 | 中国石化集团胜利石油管理局钻井工艺研究院 | Repeatedly-usable elevator apparatus |
| CN102162233A (en) * | 2011-02-21 | 2011-08-24 | 中国海洋石油总公司 | Continuous stepping hydraulic lifting device and method |
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