CN111536101A - Cutter suction dredger steel pile stress on-line monitoring and protecting system - Google Patents
Cutter suction dredger steel pile stress on-line monitoring and protecting system Download PDFInfo
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- CN111536101A CN111536101A CN202010366705.0A CN202010366705A CN111536101A CN 111536101 A CN111536101 A CN 111536101A CN 202010366705 A CN202010366705 A CN 202010366705A CN 111536101 A CN111536101 A CN 111536101A
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- China
- Prior art keywords
- steel pile
- oil cylinder
- hydraulic oil
- hydraulic
- stress
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
- F15B1/021—Installations or systems with accumulators used for damping
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
Abstract
The invention discloses an on-line monitoring and protecting system for the stress of a steel pile of a cutter suction dredger, which relates to the technical field of ships and comprises a plurality of measuring units arranged along the length direction of the steel pile, wherein each measuring unit is provided with a monitoring assembly, each monitoring assembly comprises a plurality of hydraulic elements arranged around the circumference of the steel pile, each hydraulic element comprises a hydraulic oil cylinder and a pressure sensor used for measuring the pressure in the hydraulic oil cylinder, one end of each hydraulic oil cylinder is connected with the steel pile, the connecting point of each hydraulic oil cylinder and the steel pile defines a pressure measuring point, the piston rod of each hydraulic oil cylinder is pressed against the steel pile, and the piston rod of each hydraulic oil cylinder has a moving stroke so as to buffer the stress impact of the steel pile; and each pressure sensor is electrically connected with the display and calculation unit. The invention can monitor the stress of the steel pile on line and provide buffer protection, thereby improving the safety and the working efficiency of the cutter suction dredger in construction operation.
Description
Technical Field
The invention relates to the technical field of ships, in particular to an on-line monitoring and protecting system for the stress of a steel pile of a cutter suction dredger.
Background
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art, at present, after the cutter suction dredger is constructed on the sea, the stress of the positioning steel pile inevitably exists due to the influence of factors such as surge and reamer, whether the stress of the steel pile is in a safe range or not is very important for the safe and continuous construction of the cutter suction dredger, and if the steel pile is broken due to overhigh stress, the cutter suction dredger stops and the ship safety of the cutter suction dredger is endangered.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the above-mentioned problems in the prior art. Therefore, the embodiment of the invention provides an on-line monitoring and protecting system for the stress of the steel pile of the cutter suction dredger, which is used for carrying out on-line monitoring on the stress of the steel pile and providing buffer protection, thereby improving the safety and the working efficiency of the cutter suction dredger in construction operation.
The cutter suction dredger steel pile stress on-line monitoring and protecting system comprises a plurality of measuring units arranged along the length direction of a steel pile, wherein each measuring unit is provided with a monitoring assembly, each monitoring assembly comprises a plurality of hydraulic elements arranged around the circumference of the steel pile, each hydraulic element comprises a hydraulic oil cylinder and a pressure sensor used for measuring the pressure of the hydraulic oil cylinder, one end of each hydraulic oil cylinder is connected with the steel pile, a piston rod of each hydraulic oil cylinder is pressed against the steel pile, the piston rod of each hydraulic oil cylinder has a moving stroke so as to buffer the stress impact of the steel pile, and the connecting point of each hydraulic oil cylinder and the steel pile is defined as a pressure measuring point; and each pressure sensor is electrically connected with the display and calculation unit.
In an alternative or preferred embodiment, the two measuring units are arranged up and down along the length direction of the steel pile, and the pressure measuring point in the upper measuring unit and the corresponding pressure measuring point in the lower measuring unit are arranged up and down along the length direction of the steel pile.
In an alternative or preferred embodiment, a total of four hydraulic rams are provided for each monitoring assembly and are evenly distributed around the circumference of the steel pile.
In an alternative or preferred embodiment, the hydraulic oil cylinder is connected with an energy accumulator, so that the moving stroke of a piston rod of the hydraulic oil cylinder is in a linear relation with the pressure of the piston rod of the hydraulic oil cylinder on the steel pile.
In an optional or preferred embodiment, the system further comprises an oil tank, an oil outlet of the oil tank is provided with a hydraulic pump, each accumulator is connected with the hydraulic pump through an oil pipe, and the oil pipe is provided with a control valve.
Based on the technical scheme, the embodiment of the invention at least has the following beneficial effects: according to the technical scheme, the measuring units are designed, the hydraulic elements are arranged around the circumference of the steel pile, the pressure sensor can monitor the pressure change of the hydraulic oil cylinder, the difference value change monitored by the monitoring assemblies in each measuring unit can be combined with the ground depth of the steel pile to calculate the stress change of the steel pile, and the piston rod of the hydraulic oil cylinder has a moving stroke, so that the pressure impact of the steel pile is buffered, and the stress protection is formed. The invention can monitor the stress of the steel pile on line and provide buffer protection, thereby improving the safety and the working efficiency of the cutter suction dredger in construction operation.
Drawings
In order to more clearly illustrate the technical solution in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below. It is clear that the described figures are only some embodiments of the invention, not all embodiments, and that a person skilled in the art can also derive other designs and figures from them without inventive effort.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic layout diagram between the measuring unit and the steel pile in the embodiment of the invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it is to be understood that the positional or orientational relationships, such as those indicated by center, longitudinal, lateral, length, width, thickness, upper, lower, front, rear, left, right, vertical, horizontal, top, bottom, inner, outer, clockwise, counterclockwise, axial, radial, circumferential, and the like, are based on the positional or orientational relationships shown in the drawings and are for convenience of description and simplicity of description only, and are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be considered as limiting.
In the description of the present invention, the meaning of several is one or more, the meaning of a plurality is two or more, and larger, smaller, larger, etc. are understood as excluding the present number, and larger, lower, inner, etc. are understood as including the present number unless specifically defined otherwise. Furthermore, the descriptions of first and second are only for the purpose of distinguishing between technical features, and are not to be construed as indicating or implying relative importance or implying any number or order of indicated technical features.
In the description of the present invention, unless otherwise expressly limited, terms such as set, arranged, mounted, connected, fixed and the like should be construed broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in the present invention in consideration of the detailed contents of the technical solutions.
In the description of the present invention, unless otherwise expressly limited, a first feature may be located on or below a second feature in direct contact with the second feature, or the first feature and the second feature may be in indirect contact via intermediate media. Also, a first feature may be directly above or obliquely above a second feature, or merely that the first feature is at a higher level than the second feature. A first feature may be directly below or obliquely below a second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Referring to fig. 1, the system for monitoring and protecting the stress of the steel pile of the cutter suction dredger on line comprises a plurality of measuring units and a display and calculation unit 41. Wherein, each measuring unit sets up along piling bar 31 length direction, and measuring unit is provided with monitoring components 20, and in this embodiment, as shown in fig. 2, measuring unit totally two and set up from top to bottom along piling bar 31 length direction. The steel pile 31 is in operation fixed to the hull 32 by means of two measuring units.
Specifically, the measuring unit is provided with monitoring subassembly 20, and monitoring subassembly 20 includes a plurality of hydraulic component that arranges around the circumference of steel pile 31, and hydraulic component includes hydraulic cylinder 21 and is used for measuring pressure sensor 22 of hydraulic cylinder 21 pressure, and hydraulic cylinder 21 one end is connected with steel pile 31, and hydraulic cylinder 21 piston rod supports and presses on steel pile 31.
The connecting point of the hydraulic oil cylinder 21 and the steel pile 31 is defined as a pressure measuring point, the pressure measuring point in the upper measuring unit and the corresponding pressure measuring point in the lower measuring unit are arranged up and down along the length direction of the steel pile 31, as shown in fig. 1, the pressure measuring points of the two measuring units are projected along the axial direction of the steel pile, and are coincident. In this embodiment, four hydraulic rams 21 are provided for each monitoring assembly 20, and are evenly distributed around the circumference of the steel pile 31.
It can be understood that the pressure measuring point in the upper measuring unit, the pressure measuring point in the lower measuring unit and the bottom end of the steel pile 31 form three points for balancing stress, and through the lever principle, the three points are balanced in stress and the stress presents a proportional relation. Meanwhile, the three points of relative displacement strokes show a proportional relation, the stress condition of the steel pile 31 can be calculated through calculation, specifically, each pressure sensor 22 is electrically connected with the display and calculation unit 41, the pressure of the hydraulic oil cylinder 21 is measured through each pressure sensor 22, and data is fed back to the display and calculation unit 41 to be calculated and displayed. The display and calculation unit 41 is an existing module, and detailed data collection and calculation are not described again.
In addition, the hydraulic oil cylinder 21 piston rod has a moving stroke to buffer the stress impact of the steel pile 31. In some embodiments, the hydraulic oil cylinder 21 is connected with an energy accumulator 23, the energy accumulator 23 enables the moving stroke of a piston rod of the hydraulic oil cylinder 21 to be in a linear relation with the pressure intensity of the piston rod of the hydraulic oil cylinder 21 on the steel pile 31, and the energy accumulator 23 can provide a certain range of stroke and pressure change range for the hydraulic oil cylinder, so that the hydraulic oil cylinder 21 has a buffering effect on the steel pile 31. Further, the system also comprises an oil tank 11, an oil outlet of the oil tank 11 is provided with a hydraulic pump 12, each energy accumulator 23 is connected with the hydraulic pump 12 through an oil pipe, and the oil pipe is provided with a control valve 24. Of course, the energy accumulator 23 is one of the preferable buffering devices, so that the piston rod of the hydraulic cylinder 21 has a moving stroke, and when the steel pile 31 receives stress, the piston rod of the hydraulic cylinder having the moving stroke can provide buffering protection for the steel pile, and in other embodiments, the hydraulic cylinder 21 can be connected with other types of buffering devices, and can also have the moving stroke.
Before the on-line monitoring and protecting system for the stress of the steel pile of the cutter suction dredger starts working, the hydraulic pump 12 is communicated to set and adjust the pressure of the corresponding energy accumulator 23 through each control valve 24. The setting of the pressure of the compressed air in the energy accumulator can be designed according to the pressure requirement of the steel pile on specific projects so as to form a steel pile stress monitoring and protection range of the safety stress.
When the on-line monitoring and protecting system for the stress of the steel pile of the cutter suction dredger works, each control valve 24 is closed, the steel pile 31 is stressed to form deviation, corresponding hydraulic oil cylinders 21 are subjected to deviation displacement, pressure in the corresponding energy accumulator 23 can be changed due to the oil cylinder displacement of the hydraulic oil cylinders 21, and the pressure in the energy accumulator 23 is transmitted to the display and calculation unit 41 through the pressure sensor 22 to be calculated and displayed.
In this embodiment, the steel pile 31 is subjected to pressure monitoring by the upper and lower measuring units, specifically, real-time monitoring by the hydraulic oil cylinder 21 and the pressure sensor 22, and calculation is performed by the difference between the measured values of the pressure sensors in the two sets of monitoring assemblies, that is, quantitative description is performed by the relative pressure change measured by the pressure sensors. The method realizes the judgment and early warning of the equivalence and the direction of the steel pile stress. According to the technical scheme, on the premise of ensuring safe operation of the steel pile of the cutter suction dredger, the safety of the steel pile of the cutter suction dredger in dredging operation is improved, the safety technical support of the steel pile is effectively provided for the cutter suction dredger, and safety assessment and detection of the steel pile are supported.
While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (5)
1. The utility model provides a cutter suction dredger piling stress on-line monitoring and protection system which characterized in that: comprises that
The device comprises a plurality of measuring units arranged along the length direction of a steel pile (31), wherein each measuring unit is provided with a monitoring assembly (20), each monitoring assembly (20) comprises a plurality of hydraulic elements arranged around the circumference of the steel pile (31), each hydraulic element comprises a hydraulic oil cylinder (21) and a pressure sensor (22) used for measuring the pressure of the hydraulic oil cylinder (21), one end of each hydraulic oil cylinder (21) is connected with the steel pile (31), a piston rod of each hydraulic oil cylinder (21) is pressed against the steel pile (31), the piston rod of each hydraulic oil cylinder (21) has a moving stroke to buffer the stress impact of the steel pile (31), and the connecting point of each hydraulic oil cylinder (21) and the steel pile (31) is defined as a pressure measuring point; and
and a display and calculation unit (41), wherein each pressure sensor (22) is electrically connected with the display and calculation unit (41).
2. The cutter suction dredger steel pile stress on-line monitoring and protecting system according to claim 1, characterized in that: the two measuring units are arranged up and down along the length direction of the steel pile (31), and the pressure measuring point in the upper measuring unit and the corresponding pressure measuring point in the lower measuring unit are arranged up and down along the length direction of the steel pile (31).
3. The cutter suction dredger steel pile stress on-line monitoring and protecting system according to claim 2, characterized in that: the hydraulic oil cylinders (21) of each monitoring assembly (20) are four in number and are uniformly distributed around the circumference of the steel pile (31).
4. The cutter suction dredger steel pile stress on-line monitoring and protection system according to claim 2 or 3, characterized in that: the hydraulic oil cylinder (21) is connected with an energy accumulator (23) so that the moving stroke of a piston rod of the hydraulic oil cylinder (21) is in a linear relation with the pressure intensity of the piston rod of the hydraulic oil cylinder (21) on the steel pile (31).
5. The cutter suction dredger steel pile stress on-line monitoring and protecting system according to claim 4, characterized in that: the hydraulic pump oil storage system is characterized by further comprising an oil tank (11), hydraulic pumps (12) are installed at oil outlets of the oil tank (11), each energy accumulator (23) is connected with the hydraulic pump (12) through an oil pipe, and the oil pipe is provided with a control valve (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010366705.0A CN111536101A (en) | 2020-04-30 | 2020-04-30 | Cutter suction dredger steel pile stress on-line monitoring and protecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010366705.0A CN111536101A (en) | 2020-04-30 | 2020-04-30 | Cutter suction dredger steel pile stress on-line monitoring and protecting system |
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| Publication Number | Publication Date |
|---|---|
| CN111536101A true CN111536101A (en) | 2020-08-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010366705.0A Pending CN111536101A (en) | 2020-04-30 | 2020-04-30 | Cutter suction dredger steel pile stress on-line monitoring and protecting system |
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| CN (1) | CN111536101A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117347151A (en) * | 2023-12-04 | 2024-01-05 | 中交天津航道局有限公司 | System and method for monitoring stress of steel pile of cutter suction dredger |
-
2020
- 2020-04-30 CN CN202010366705.0A patent/CN111536101A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117347151A (en) * | 2023-12-04 | 2024-01-05 | 中交天津航道局有限公司 | System and method for monitoring stress of steel pile of cutter suction dredger |
| CN117347151B (en) * | 2023-12-04 | 2024-04-02 | 中交天津航道局有限公司 | System and method for monitoring stress of steel pile of cutter suction dredger |
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