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Pile leg stroke measuring method and device and hydraulic bolt lifting system

A measurement method and leg technology, which can be used in water conservancy projects, foundation structure engineering, foundation structure tests, etc., and can solve problems such as inability to accurately obtain leg strokes

Active Publication Date: 2014-07-23
WUHAN MARINE MACHINERY PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problem that the leg stroke cannot be accurately obtained in the prior art, the embodiment of the present invention provides a method and device for measuring the leg stroke and a hydraulic bolt lifting system

Method used

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  • Pile leg stroke measuring method and device and hydraulic bolt lifting system
  • Pile leg stroke measuring method and device and hydraulic bolt lifting system
  • Pile leg stroke measuring method and device and hydraulic bolt lifting system

Examples

Experimental program
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Effect test

Embodiment 1

[0037] The embodiment of the present invention provides a method for measuring the leg stroke, such as figure 1 As shown, the measurement method includes:

[0038] Record the pitch number δ of the leg 107 movement;

[0039] Detecting the absolute displacement of the lifting cylinder 105, and judging the action of the lifting cylinder according to the detected absolute displacement;

[0040] Detect the state of the upper pin 104 and the lower pin 106;

[0041] When the action of the lift cylinder 105 is an extension action and the state of the upper bolt 104 is to stretch into the pin hole of the leg 107, and the action of the lift cylinder 105 is a retraction action and the state of the lower bolt 106 is to stretch into the bolt hole of the leg 107 When the holes appear sequentially, add 1 to the pitch number of the legs 107 to measure the stroke H of the legs 107 when the legs 107 are descending and the platform is rising;

[0042] When the action of the lift cylinder 105 ...

Embodiment 2

[0048] An embodiment of the present invention provides a device for measuring leg stroke, such as figure 2 , image 3 , Figure 4 and Figure 5 As shown, the device includes:

[0049] A counter is used to record the number of pitches δ that the legs 107 move;

[0050] The displacement sensor 300 is used to detect the absolute displacement of the lifting cylinder 105 (that is, the extension or retraction displacement of the cylinder rod 105a);

[0051] At least two proximity switches 400 for detecting the states of the upper pin 104 and the lower pin 106;

[0052] The induction block 401 is used to be arranged on the upper pin 104 and the lower pin 106 and cooperate with the proximity switch 400;

[0053] The processor 200 is used to judge the action of the lifting cylinder 105 according to the detected absolute displacement. When the action of the lifting cylinder 105 is an extension action and the state of the upper pin 104 is to extend into the pin hole of the leg 107 ...

Embodiment 3

[0063] The embodiment of the present invention provides a hydraulic bolt lifting system, such as figure 2 , image 3 , Figure 4 and Figure 5 As shown, the lifting system includes a fixed ring beam 102 fixedly connected with the solid pile frame, a moving ring beam 103, pile legs 107, a lifting cylinder 105, several upper bolts 104 respectively arranged on the fixed ring beam 102, and respectively Several lower bolts 106 on the moving ring beam 103, one end of the lifting cylinder 105 is installed on the fixed ring beam 102, and the other end of the lifting cylinder 105 is installed on the moving ring beam 103. The system also includes the piles provided by the second embodiment of the present invention The leg stroke measuring device, specifically, the leg stroke measuring device includes a counter for recording the number of pitches δ of the leg 107 moving, a displacement sensor 300 for detecting the absolute displacement of the lifting cylinder 105, and a displacement s...

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Abstract

The invention discloses a pile leg stroke measuring method and device and a hydraulic bolt lifting system, and belongs to the technical field of ocean platform lifting systems. The pile leg stroke measuring method includes the steps of recording the pile leg moving pitch number, detecting the absolute displacement of a lifting oil cylinder, judging the motion of the lifting oil cylinder according to the detected absolute displacement, detecting the states of an upper bolt and a lower bolt, when the conditions that the motion of the lifting oil cylinder is the extending motion and the state of the upper bolt is that the upper bolt extends into a bolt hole of a pile leg and the conditions that the motion of the lifting oil cylinder is the retraction motion and the state of the lower bolt is that the lower bolt extends into the bolt hole of the pile leg sequentially occur, adding one to the pile leg pitch number, and calculating the pile leg stroke H according to the formula that H is equal to the sum of delta*h and L. The pile leg stroke measuring device comprises a counter, a displacement sensor, a proximity switch, an induction block and a processor. The hydraulic bolt lifting system comprises the pile leg stroke measuring device. The pile leg stroke can be accurately calculated with the pile leg stroke measuring method, and can be accurately reflected by the pile leg stroke measuring device and the hydraulic bolt lifting system.

Description

technical field [0001] The invention relates to the technical field of lifting systems for offshore platforms, in particular to a method and device for measuring leg strokes and a hydraulic bolt lifting system. Background technique [0002] The hydraulic pin lifting system is applied to the jack-up offshore platform, which can drive the hull to move up and down along the legs of the jack-up offshore platform. The real-time monitoring of the leg stroke is very important for the entire hydraulic pin lifting system. [0003] The existing hydraulic bolt lifting system includes: a moving ring beam, a fixed ring beam, pile legs, a lifting cylinder, a number of upper bolt cylinders on the fixed ring beam, and a number of lower bolt cylinders on the moving ring beam. The frame is fixed on the hull, the fixed ring beam is fixed on the pile frame, one end of the lifting cylinder is installed on the fixed ring beam, the other end of the lifting cylinder is installed on the moving ring ...

Claims

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Application Information

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IPC IPC(8): E02D33/00E02B17/08
Inventor 江志钢马志刚徐潇王金秋张恒
Owner WUHAN MARINE MACHINERY PLANT
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