CN103938659B - The measuring method of spud leg stroke, device and hydraulic bolt jacking system - Google Patents

The measuring method of spud leg stroke, device and hydraulic bolt jacking system Download PDF

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Publication number
CN103938659B
CN103938659B CN201410106737.1A CN201410106737A CN103938659B CN 103938659 B CN103938659 B CN 103938659B CN 201410106737 A CN201410106737 A CN 201410106737A CN 103938659 B CN103938659 B CN 103938659B
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Prior art keywords
spud leg
action
lift cylinder
latch
stroke
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CN103938659A (en
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江志钢
马志刚
徐潇
王金秋
张恒
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Wuhan Marine Machinery Plant Co Ltd
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Wuhan Marine Machinery Plant Co Ltd
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Abstract

The invention discloses a kind of measuring method of spud leg stroke, device and hydraulic bolt jacking system, belong to lifting of ocean platform systems technology field.Described measuring method comprises: the pitch number of record spud leg movement; Detect the absolute displacement of lift cylinder, and judge the action of lift cylinder according to the absolute displacement detected; The state of latch and lower latch in detection; When the action of lift cylinder be extend action and the action that the state of upper latch is the pin hole and lift cylinder stretching into described spud leg be retracting action and the state of lower latch is the pin hole stretching into spud leg occur successively time, the pitch number of spud leg is added 1; The stroke H of spud leg is calculated according to H=δ * h+L.Described device comprises: counter, displacement transducer, proximity switch, sensor block and processor.Described system comprises spud leg stroke measuring device.Described method accurately can calculate the stroke of spud leg, and described Apparatus and system accurately can reflect the stroke of spud leg.

Description

The measuring method of spud leg stroke, device and hydraulic bolt jacking system
Technical field
The present invention relates to lifting of ocean platform systems technology field, particularly a kind of measuring method of spud leg stroke, device and hydraulic bolt jacking system.
Background technology
Hydraulic bolt jacking system is applied in self-elevating ocean platform, and it can drive hull to move up and down along the spud leg of self-elevating ocean platform, and the Real-Time Monitoring of spud leg stroke is concerning most important whole hydraulic bolt jacking system.
Existing hydraulic bolt jacking system comprises: rotating ring beam, fixed ring beam, spud leg, lift cylinder, some upper plugging pin oil cylinder on fixed ring beam is set respectively, and the some lower plugging pin oil cylinder be arranged on rotating ring beam, wedge bracket is fixed on hull, fixed ring beam is fixed on wedge bracket, one end of lift cylinder is arranged on fixed ring beam, the other end of lift cylinder is arranged on rotating ring beam, spud leg vertically stretches into marine through fixed ring beam and rotating ring beam, the cylinder rod of plugging pin oil cylinder is connected with latch, the latch of upper plugging pin oil cylinder and lower plugging pin oil cylinder can insert in the pin hole of the vertical layout on spud leg, alternately stretched by upper plugging pin oil cylinder and lower plugging pin oil cylinder, and coordinate flexible each action realizing spud leg of lift cylinder.
Realizing in process of the present invention, inventor finds that prior art at least exists following problem:
Hydraulic bolt jacking system is the lifting being realized hull or spud leg by the co-operating of upper plugging pin oil cylinder, lower plugging pin oil cylinder and lift cylinder, for spud leg step-down operation, introduce its concrete steps as follows: before realizing down maneuver, usually lower plugging pin oil cylinder is in the state of stretching out, the latch of upper plugging pin oil cylinder is in retracted state, is namely fixed by lower latch between spud leg and hull.When realizing down maneuver, the cylinder rod of lift cylinder is stretched out, the cylinder rod of lift cylinder drives rotating ring beam to move downward, and then drive spud leg relatively to move downward, when the cylinder rod of lift cylinder extend out to precalculated position (range of such as lift cylinder), the latch of upper plugging pin oil cylinder stretches in pin hole corresponding on spud leg, the latch retraction of lower plugging pin oil cylinder, then the cylinder rod of lift cylinder bounces back to precalculated position, then the latch of plugging pin oil cylinder is descended to stretch in pin hole corresponding on spud leg, the latch retraction of upper plugging pin oil cylinder, thus complete a down maneuver.But, because lift cylinder is all back and forth movement in the lifting process of whole platform or spud leg, therefore, directly the displacement of spud leg cannot be obtained by displacement transducer Measurement accuracy.
Summary of the invention
Cannot the problem of Obtaining Accurate spud leg stroke in order to solve in prior art, embodiments provide a kind of measuring method of spud leg stroke, device and hydraulic bolt jacking system.Described technical scheme is as follows:
On the one hand, embodiments provide a kind of measuring method of spud leg stroke, described measuring method comprises:
The pitch number of record spud leg movement;
Detect the absolute displacement of lift cylinder, and judge the action of described lift cylinder according to the described absolute displacement detected;
The state of latch and lower latch in detection;
When the action of described lift cylinder be extend action and the action that the state of described upper latch is the pin hole and described lift cylinder stretching into described spud leg be retracting action and the state of described lower latch is the pin hole stretching into described spud leg occur successively time, the pitch number of described spud leg is added 1;
When the action of described lift cylinder be retracting action and the action that the state of described upper latch is the pin hole and described lift cylinder stretching into described spud leg be extend action and the state of described lower latch is the pin hole stretching into described spud leg occur successively time, the pitch number of described spud leg is subtracted 1;
According to H=δ * h+L, calculate the stroke H of described spud leg, wherein, δ is the pitch number of spud leg, and h is the centre distance of two described pin holes of the adjacent layout of axis along described spud leg, and L is the absolute displacement of described lift cylinder.
Further, the initial value of described pitch number δ is zero.
Further, the pitch number of described record spud leg movement adopts counter to realize.
On the other hand, embodiments provide a kind of device measuring spud leg stroke, described device comprises:
Counter, for recording the pitch number of spud leg movement;
Displacement transducer, for detecting the absolute displacement of lift cylinder;
At least two proximity switches, for detecting upper latch and lower latch state;
Sensor block, for be arranged on described upper latch and described lower latch and to coordinate with described proximity switch;
Processor, for judging the action of described lift cylinder according to the described absolute displacement detected, when the action of described lift cylinder be extend action and the action that the state of described upper latch is the pin hole and described lift cylinder stretching into described spud leg be retracting action and the state of described lower latch is the pin hole stretching into described spud leg occur successively time, the pitch number of described spud leg is added 1; When the action of described lift cylinder be retracting action and the action that the state of described upper latch is the pin hole and described lift cylinder stretching into described spud leg be extend action and the state of described lower latch is the pin hole stretching into described spud leg occur successively time, the pitch number of described spud leg is subtracted 1; According to H=δ * h+L, calculate the stroke H of described spud leg, wherein, δ is the pitch number of spud leg, and h is the centre distance of two described pin holes of the adjacent layout of axis along described spud leg, and L is the absolute displacement of described lift cylinder.
Particularly, described proximity switch is electromagnetic type proximity switch.
Particularly, described processor is programmable logic controller (PLC).
Particularly, institute's displacement sensors is magnetostatic displacement transducer.
Particularly, the line direction of described at least two proximity switches is parallel with the direction of stretching out and retracting of described lower latch with described upper latch.
Particularly, described proximity switch is provided with two, and the two ends of the stroke of two corresponding described upper latches of described proximity switch or described lower latch are arranged.
Another aspect, embodiments provide a kind of hydraulic bolt jacking system, described jacking system comprises: the fixed ring beam be fixedly connected with wedge bracket, rotating ring beam, spud leg, lift cylinder, be arranged at the some upper latch on fixed ring beam and the some lower latch that is separately positioned on rotating ring beam respectively, one end of described lift cylinder is arranged on described fixed ring beam, the other end of described lift cylinder is arranged on described rotating ring beam, and described system also comprises above-mentioned spud leg stroke measuring device.
The beneficial effect that the technical scheme that the embodiment of the present invention provides is brought is: the device that the embodiment of the present invention provides, the absolute displacement of lift cylinder is detected by displacement transducer, at least two proximity switches detect upper latch and lower latch state, the action detecting when lift cylinder by processor is extend action and the action that the state of upper latch is the pin hole and lift cylinder stretching into spud leg is retracting action and the state of lower latch is the pin hole stretching into spud leg when occurring successively, and the pitch number of spud leg is added 1; When the action of lift cylinder be retracting action and the action that the state of upper latch is the pin hole and lift cylinder stretching into spud leg be extend action and the state of lower latch is the pin hole stretching into spud leg occur successively time, the pitch number of spud leg is subtracted 1; And the stroke of spud leg is correctly counted out by logical operation, make spud leg stroke measuring device provided by the invention can react the stroke of spud leg exactly.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of the measuring method of the spud leg stroke that the embodiment of the present invention one provides;
Fig. 2 is the structural representation of the hydraulic bolt lifting gear that the embodiment of the present invention two provides;
Fig. 3 is the structural representation of B-B section in Fig. 2;
Fig. 4 is the structural representation of D-D section in Fig. 2;
Fig. 5 is the structural representation of the proximity switch that provides of the embodiment of the present invention two and sensor block.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment one
Embodiments provide a kind of measuring method of spud leg stroke, as shown in Figure 1, this measuring method comprises:
The pitch number δ of record spud leg 107 movement;
Detect the absolute displacement of lift cylinder 105, and judge the action of described lift cylinder according to the described absolute displacement detected;
The state of latch 104 and lower latch 106 in detection;
When the action of lift cylinder 105 be extend action and the action that the state of upper latch 104 is the pin hole and lift cylinder 105 stretching into spud leg 107 be retracting action and the state of lower latch 106 is the pin hole stretching into spud leg 107 occur successively time, the pitch number of spud leg 107 is added 1, for spud leg 107 when down maneuver and platform in vertical motion time, measure the stroke H of spud leg 107;
When the action of lift cylinder 105 be retracting action and the action that the state of upper latch 104 is the pin hole and lift cylinder 105 stretching into spud leg 107 be extend action and the state of lower latch 106 is the pin hole stretching into spud leg 107 occur successively time, the pitch number of spud leg 107 is subtracted 1, for spud leg 107 when vertical motion and platform in down maneuver time, measure the stroke H of spud leg 107;
According to H=δ * h+L, calculate the stroke H of spud leg 107, wherein, δ is the pitch number of spud leg 107, and h is the centre distance of two pin holes of the adjacent layout of axis along spud leg 107, and L is the absolute displacement of lift cylinder 105.
Further, the initial value of pitch number δ can be zero.
Further, the pitch number recording spud leg movement can adopt counter to realize.
The measuring method of the spud leg stroke in the embodiment of the present invention, when the action of lift cylinder be extend action and the action that the state of upper latch is the pin hole and lift cylinder stretching into spud leg be retracting action and the state of lower latch is the pin hole stretching into spud leg occur successively time, the pitch number of spud leg is added 1; When the action of lift cylinder be retracting action and the action that the state of upper latch is the pin hole and lift cylinder stretching into spud leg be extend action and the state of lower latch is the pin hole stretching into spud leg occur successively time, the pitch number of spud leg is subtracted 1; And the stroke of spud leg is correctly counted out by logical operation, make spud leg stroke-measuring method provided by the invention can react the stroke of spud leg exactly.
Embodiment two
The embodiment of the present invention provides a kind of device measuring spud leg stroke, and as shown in Fig. 2, Fig. 3, Fig. 4 and Fig. 5, this device comprises:
Counter, for recording the pitch number δ of spud leg 107 movement;
Displacement transducer 300, for detecting the absolute displacement (i.e. the displacement of stretching out or bouncing back of cylinder rod 105a) of lift cylinder 105;
At least two proximity switches 400, for detecting upper latch 104 and lower latch 106 state;
Sensor block 401, for be arranged on upper latch 104 and lower latch 106 and to coordinate with proximity switch 400;
Processor 200, for judging the action of lift cylinder 105 according to the absolute displacement detected, when the action of lift cylinder 105 be extend action and the action that the state of upper latch 104 is the pin hole and lift cylinder 105 stretching into spud leg 107 be retracting action and the state of lower latch 106 is the pin hole stretching into spud leg 107 occur successively time, the pitch number of spud leg 107 is added 1; When the action of lift cylinder 105 be retracting action and the action that the state of upper latch 104 is the pin hole and lift cylinder 105 stretching into spud leg 107 be extend action and the state of lower latch 106 is the pin hole stretching into spud leg 107 occur successively time, the pitch number of spud leg 107 is subtracted 1; According to H=δ * h+L, calculate the stroke H of spud leg 107, wherein, δ is the pitch number of spud leg 107, and h is the centre distance of two pin holes of the adjacent layout of axis along spud leg 107, and L is the absolute displacement of lift cylinder 105.
Displacement transducer 300 is all connected with processor 200 with proximity switch 400, and displacement transducer 300 is arranged on lift cylinder 105, and at least two proximity switches 400 are arranged at latch 104 and lower latch 106 side respectively.
Particularly, proximity switch 400 can be electromagnetic type proximity switch.Electromagnetic type proximity switch can detect in a non contact fashion, and can not wear and tear detected object, and stable performance, frequency response are very fast.Easily know, proximity switch 400 is not limited in electromagnetic type proximity switch.
Particularly, counter can be programmable logic controller (PLC) (ProgrammableLogicController, PLC), also can be monolithic counter, microprocessor counter etc.
Particularly, displacement transducer 300 can be magnetostatic displacement transducer.Magnetostatic displacement transducer economy, efficiency, be specially adapted to the measurement of long distance, and adaptable for harsh environments.Easily know, in other embodiments, also can adopt other displacement transducers.
Further, proximity switch 400 can be provided with two, and the two ends of the stroke of two upper latches 104 of proximity switch 400 correspondence or lower latch 106 are arranged.In the pin hole needing during system controls automatically precisely to judge whether latch stretches on spud leg 107, or latch throw off after whether retract to assigned address, therefore the position of proximity switch 400 just needs strictly to set according to latch operating distance.
Further, the line direction of at least two proximity switches 400 is parallel with the direction of stretching out and retracting of lower latch 106 with upper latch 104.Proximity switch 400 line and latch moving direction keeping parallelism, can reduce sensor detection error as far as possible.
Particularly, as shown in Figure 5, this system can also comprise display 500, and processor 200 is connected with display.In addition, this processor 200 and display 500 can be arranged on hull, convenient operation person can observe the stroke of spud leg 107 like this.
The device that the embodiment of the present invention provides, the absolute displacement of lift cylinder is detected by displacement transducer, at least two proximity switches detect upper latch and lower latch state, the action detecting when lift cylinder by processor is extend action and the action that the state of upper latch is the pin hole and lift cylinder stretching into spud leg is retracting action and the state of lower latch is the pin hole stretching into spud leg when occurring successively, and the pitch number of spud leg is added 1; When the action of lift cylinder be retracting action and the action that the state of upper latch is the pin hole and lift cylinder stretching into spud leg be extend action and the state of lower latch is the pin hole stretching into spud leg occur successively time, the pitch number of spud leg is subtracted 1; And the stroke of spud leg is correctly counted out by logical operation, make spud leg stroke measuring device provided by the invention can react the stroke of spud leg exactly.
Embodiment three
Embodiments provide a kind of hydraulic bolt jacking system, as Fig. 2, Fig. 3, shown in Fig. 4 and Fig. 5, this jacking system comprises the fixed ring beam 102 be fixedly connected with wedge bracket, rotating ring beam 103, spud leg 107, lift cylinder 105, be arranged at the some upper latch 104 on fixed ring beam 102 respectively, and the some lower latch 106 be separately positioned on rotating ring beam 103, one end of lift cylinder 105 is arranged on fixed ring beam 102, the other end of lift cylinder 105 is arranged on rotating ring beam 103, this system also comprises the spud leg stroke measuring device that the embodiment of the present invention two provides, particularly, this spud leg stroke measuring device comprises the counter of the pitch number δ of record spud leg 107 movement, for detecting the displacement transducer 300 of the absolute displacement of lift cylinder 105 and at least two proximity switches 400 for detecting upper latch and lower latch state, for comparing absolute displacement and preset parameter value, and receive the pulse signal that proximity switch 400 sends, the processor of the stroke of spud leg 107 is calculated again by H=δ * h+L, wherein, δ is the pitch number of spud leg 107, h is the centre distance of two pin holes of the adjacent layout of axis along spud leg 107, L is the absolute displacement of lift cylinder 105, H is the stroke of the spud leg 107 calculated, displacement transducer 300 is arranged on lift cylinder 105, at least two proximity switches 400 are arranged at latch 104 and lower latch 106 side respectively, counter 200, displacement transducer 300 is all connected with processor 200 with proximity switch 400.
The system that the embodiment of the present invention provides, the absolute displacement of lift cylinder is detected by displacement transducer, at least two proximity switches detect upper latch and lower latch state, the action detecting when lift cylinder by processor is extend action and the action that the state of upper latch is the pin hole and lift cylinder stretching into spud leg is retracting action and the state of lower latch is the pin hole stretching into spud leg when occurring successively, and the pitch number of spud leg is added 1; When the action of lift cylinder be retracting action and the action that the state of upper latch is the pin hole and lift cylinder stretching into spud leg be extend action and the state of lower latch is the pin hole stretching into spud leg occur successively time, the pitch number of spud leg is subtracted 1; And the stroke of spud leg is correctly counted out by logical operation, make spud leg stroke measuring device provided by the invention can react the stroke of spud leg exactly.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (10)

1. a measuring method for spud leg stroke, is characterized in that, described measuring method comprises:
The pitch number of record spud leg movement;
Detect the absolute displacement of lift cylinder, and judge the action of described lift cylinder according to the described absolute displacement detected;
The state of latch and lower latch in detection;
When the action of described lift cylinder be extend action and the action that the state of described upper latch is the pin hole and described lift cylinder stretching into described spud leg be retracting action and the state of described lower latch is the pin hole stretching into described spud leg occur successively time, the pitch number of described spud leg is added 1;
When the action of described lift cylinder be retracting action and the action that the state of described upper latch is the pin hole and described lift cylinder stretching into described spud leg be extend action and the state of described lower latch is the pin hole stretching into described spud leg occur successively time, the pitch number of described spud leg is subtracted 1;
According to H=δ * h+L, calculate the stroke H of described spud leg, wherein, δ is the pitch number of spud leg, and h is the centre distance of two described pin holes of the adjacent layout of axis along described spud leg, and L is the absolute displacement of described lift cylinder.
2. measuring method according to claim 1, is characterized in that, the initial value of described pitch number δ is zero.
3. measuring method according to claim 1, is characterized in that, the pitch number of described record spud leg movement adopts counter to realize.
4. measure a device for spud leg stroke, it is characterized in that, described device comprises:
Counter, for recording the pitch number of spud leg movement;
Displacement transducer, for detecting the absolute displacement of lift cylinder;
At least two proximity switches, for detecting upper latch and lower latch state;
Sensor block, for be arranged on described upper latch and described lower latch and to coordinate with described proximity switch;
Processor, for judging the action of described lift cylinder according to the described absolute displacement detected, when the action of described lift cylinder be extend action and the action that the state of described upper latch is the pin hole and described lift cylinder stretching into described spud leg be retracting action and the state of described lower latch is the pin hole stretching into described spud leg occur successively time, the pitch number of described spud leg is added 1; When the action of described lift cylinder be retracting action and the action that the state of described upper latch is the pin hole and described lift cylinder stretching into described spud leg be extend action and the state of described lower latch is the pin hole stretching into described spud leg occur successively time, the pitch number of described spud leg is subtracted 1; According to H=δ * h+L, calculate the stroke H of described spud leg, wherein, δ is the pitch number of spud leg, and h is the centre distance of two described pin holes of the adjacent layout of axis along described spud leg, and L is the absolute displacement of described lift cylinder.
5. device according to claim 4, is characterized in that, described proximity switch is electromagnetic type proximity switch.
6. device according to claim 4, is characterized in that, described processor is programmable logic controller (PLC).
7. device according to claim 4, is characterized in that, institute's displacement sensors is magnetostatic displacement transducer.
8. device according to claim 4, is characterized in that, the line direction of described at least two proximity switches is parallel with the direction of stretching out and retracting of described lower latch with described upper latch.
9. device according to claim 8, is characterized in that, described proximity switch is provided with two, and the two ends of the stroke of two corresponding described upper latches of described proximity switch or described lower latch are arranged.
10. a hydraulic bolt jacking system, described jacking system comprises: the fixed ring beam be fixedly connected with wedge bracket, rotating ring beam, spud leg, lift cylinder, be arranged at the some upper latch on fixed ring beam and the some lower latch that is separately positioned on rotating ring beam respectively, one end of described lift cylinder is arranged on described fixed ring beam, the other end of described lift cylinder is arranged on described rotating ring beam, it is characterized in that, described system also comprises the spud leg stroke measuring device as described in any one of claim 4-9.
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