CN115839813A - Impact test method for ship lift rigid beam anti-collision system and related components - Google Patents
Impact test method for ship lift rigid beam anti-collision system and related components Download PDFInfo
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Abstract
The application discloses ship lift rigid beam collision avoidance system impact test method and relevant subassembly includes: controlling the test ship to sequentially impact the rigid beam at different proportions of a preset maximum impact speed in response to that an anti-collision system of the rigid beam of the target ship lift is in a work stop state and a hydraulic oil cylinder is in a pressure maintaining and locking state; measuring the buffer distance of the test ship after each impact by using an automatic tracking total station erected on the navigation channel; measuring the stress distribution of the rigid beam in each impact process by utilizing stress sensors uniformly arranged on a top web plate and a rear wing plate of the rigid beam of the ship lift; determining the deformation rule of the rigid beam according to an image shot by the rigid beam in each impact process; measuring load changes in the vertical direction in each impact process by using pressure sensors arranged at oil outlets of a rod cavity and a rodless cavity of the hydraulic oil cylinder; and determining the anti-collision performance of the rigid beam anti-collision system based on the buffer distance, the stress distribution, the deformation rule and the load change.
Description
Technical Field
The application relates to the field of ship lifts, in particular to a ship lift rigid beam collision avoidance system impact test method and device, electronic equipment and a computer readable storage medium.
Background
The ship lift is one of inland river navigation building types, and is an effective mode for solving the high-efficiency navigation of a large hydropower station. In recent years, the ship lift in China is developed rapidly, and a large number of ultra-large vertical ship lifts such as a three gorges ship lift, a three-level ship lift for building a shoal, a thinking ship lift, a sand-tuo ship lift and the like are built in sequence. The ship lift is used as a hydropower station high dam navigation facility, bears a large ship to climb over a hundred-meter high dam, and the reliability and the safety of equipment are safety guarantee of the operation of the ship lift.
The anti-collision system of the ship lift is an intercepting device for preventing the stalling of a ship from impacting a cabin door as important equipment for ensuring the operation safety of a large ship lift, and is similar to a arresting cable of an aircraft carrier. At present, two common anti-collision system forms exist in domestic ship lifts, one is a flexible steel wire rope anti-collision system adopted by a three gorges ship lift and a ship lift for a family dam, and the other is a common rigid beam (also called a rigid anti-collision beam) anti-collision system adopted by a skin-forming beach ship lift, a thinking ship lift, a sand-tuo ship lift and the like. Because the ship lift starts late in China, many core devices, especially safety guarantee devices, only stay at the theoretical research and design stage, and test verification for safety and reliability of the ship lift is lacked.
Disclosure of Invention
The application aims to provide a ship lift rigid beam collision avoidance system impact test method, a ship lift rigid beam collision avoidance system impact test device, electronic equipment and a computer readable storage medium.
To achieve the above object, the present application provides, in a first aspect, a method for impact testing of a rigid beam collision avoidance system of a ship lift, the method including: responding to the situation that an anti-collision system of a rigid beam of a target ship lift is in a working ship blocking state and a hydraulic oil cylinder is in a pressure maintaining locking state, and controlling a test ship to sequentially impact the rigid beam at different proportions of preset maximum impact speed; wherein, the hydraulic oil cylinder is arranged at two sides of the rigid beam; measuring the buffer distance of the test ship after each impact by using an automatic tracking total station erected on the navigation channel; measuring the stress distribution of the rigid beam in each impact process by utilizing stress sensors uniformly arranged on a top web plate and a rear wing plate of the rigid beam of the ship lift; determining the deformation rule of the rigid beam according to an image shot by the rigid beam in each impact process; measuring load changes in the vertical direction in each impact process by using pressure sensors arranged at oil outlets of a rod cavity and a rodless cavity of the hydraulic oil cylinder; and determining the anti-collision performance of the anti-collision system of the rigid beam based on the buffer distance, the stress distribution, the deformation rule and the load change.
In order to achieve the above object, the present application provides in a second aspect a ship lift rigid beam collision avoidance system impact test apparatus, the apparatus comprising: the sequential impact control unit is configured to respond to that an anti-collision system of a rigid beam of the target ship lift is in a work ship blocking state and a hydraulic oil cylinder is in a pressure maintaining locking state, and control the test ship to impact the rigid beam at different proportions of preset maximum impact speed in sequence; wherein, the hydraulic oil cylinder is arranged at two sides of the rigid beam; a buffer distance measuring unit configured to measure a buffer distance of the test vessel after each impact using an automatic tracking total station erected on the runway; a stress distribution measuring unit configured to measure a stress distribution of the rigid beam during each impact using stress sensors uniformly provided on a top web and a rear wing plate of the rigid beam of the ship lift; the deformation rule determining unit is configured to determine a deformation rule of the rigid beam according to an image shot by the rigid beam in each impact process; a load change measuring unit configured to measure a load change in a vertical direction during each impact using pressure sensors provided at oil outlets of a rod chamber and a rodless chamber of the hydraulic cylinder; and the anti-collision performance determination unit is configured to determine the anti-collision performance of the anti-collision system of the rigid beam based on the buffer distance, the stress distribution, the deformation rule and the load change.
To achieve the above object, the present application provides, in a third aspect, an electronic apparatus comprising:
a memory for storing a computer program;
a processor for implementing the steps of the method for impact testing of a rigid beam impact avoidance system of a ship lift as described in the above first aspect when executing a computer program stored on a memory.
In order to achieve the above object, the present application provides in a fourth aspect a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the impact test of the rigid beam impact avoidance system of a ship lift as described in the above first aspect.
The application provides a ship lift rigid beam collision avoidance system collision test scheme to the collision avoidance system of the rigid beam of ship lift is strikeed with different speeds as test boats and ships to standard ship type, the boats and ships of standard cargo capacity, observe through the position, the impact velocity, buffer distance that detect boats and ships, and through carrying out performance monitoring to key parts such as rigid beam, wire rope, lift hydraulic cylinder, with the operating characteristic who obtains collision avoidance system, so that assess collision avoidance system's security and reliability.
This application still provides a ship lift rigid beam collision avoidance system collision test device, electronic equipment and computer readable storage medium simultaneously, has above-mentioned beneficial effect, no longer gives unnecessary details here.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic overall structural diagram of a rigid beam collision avoidance system of a ship lift according to an embodiment of the present disclosure;
fig. 2 is a flowchart of an impact test method for a rigid beam collision avoidance system of a ship lift according to an embodiment of the present disclosure;
FIG. 3 is a schematic diagram of the arrangement of stress sensors at 7 on the impact surface and the upper web of the beam body of the rigid impact beam provided by the embodiment of the present application;
FIG. 4 is a schematic structural diagram illustrating a lifting hydraulic cylinder disposed on both sides of a rigid impact beam according to an embodiment of the present disclosure;
fig. 5 is a flowchart of a method for determining collision avoidance performance according to an embodiment of the present application;
fig. 6 is a structural block diagram of an impact test device of a rigid beam collision avoidance system of a ship lift according to an embodiment of the present application;
reference numerals:
the device comprises a ship lift ship reception chamber 1, a test ship 2, a rigid beam 3, a hydraulic oil cylinder 4, a steel wire rope 5, a hydraulic oil cylinder piston rod 6, an automatic tracking type total station 7, a strain gauge (also called a stress sensor) 8, an oil pressure sensor 9, a displacement meter 10, an acquisition system 11 and a pulley block 12.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to facilitate understanding of the overall structure of the rigid beam of the ship lift and the collision avoidance system thereof, fig. 1 also illustrates a complete structural schematic diagram of a collision avoidance system impact test platform of the ship lift, according to the present invention:
wherein, this test platform includes: the device comprises a ship lift ship receiving chamber 1, a test ship 2, a rigid beam 3, a hydraulic oil cylinder 4, a steel wire rope 5, a hydraulic oil cylinder piston rod 6, an automatic tracking type total station 7, a strain gauge (also called a stress sensor) 8, an oil pressure sensor 9, a displacement meter 10, an acquisition system 11 and a pulley block 12.
Namely, the ship lift shown in figure 1 is provided with a rigid anti-collision system at the side of a lock head and a cabin working door respectively, and the anti-collision system consists of a rigid anti-collision beam, a steel wire rope, a pulley block and a lifting hydraulic oil cylinder.
On the basis of the overall structural schematic diagram shown in fig. 1, the present application further provides a flow chart of a collision test method for a rigid beam collision avoidance system of a ship lift through fig. 2, which includes the following steps:
step 201: controlling a test ship to sequentially impact the rigid beam at different proportions of a preset maximum impact speed in response to the situation that an anti-collision system of the rigid beam of the target ship lift is in a working ship blocking state and a hydraulic oil cylinder is in a pressure maintaining locking state;
this step is intended to control the test ship to sequentially impact the rigid beam at different proportions of the preset maximum impact speed under a safe state where the anti-collision system of the rigid beam of the target ship lift is in a working ship blocking state and the hydraulic cylinder is in a pressure maintaining locked state by an execution main body (for example, a local computing device or a remote computing device capable of performing data communication and data operation with the acquisition system 11 shown in fig. 1) adapted to execute the impact test method of the rigid beam of the ship lift provided by the present application. The hydraulic oil cylinders are arranged on two sides of the rigid beam, namely, one hydraulic oil cylinder is arranged on each of the two sides of the rigid beam.
Furthermore, before the anti-collision system of the rigid beam of the target ship lift is ensured to be in a working ship blocking state and the hydraulic oil cylinder is in a pressure maintaining locking state, whether the anti-collision beam, the steel wire rope, the cable joint, the pulley block, the lifting hydraulic oil cylinder and the accessory mechanism are in a normal working state can be checked, and therefore the success and the effective performance of a subsequent pile foundation test are comprehensively ensured.
The ship type of the test ship is consistent with the standard ship type designed for the target ship lift, and the cargo capacity of the test ship is consistent with the standard cargo capacity corresponding to the standard ship type designed for the target ship lift. Before each impact begins, the ship with the standard ship type is controlled to stop on the channel according to the standard cargo capacity, and the distance between the ship and the rigid beam is enough so as to accelerate the ship to the preset impact speed of each impact and adjust the ship to a constant speed state. In addition, in order to avoid variable generation caused by continuous multiple impact tests, the impact test method can also control each time when the fluctuation degree of the water surface is smaller than a preset degree, namely the water surface is required to be kept as stable as possible before each impact test is started, so that the difference caused by unstable water surface is eliminated as much as possible.
In some other embodiments, the predetermined maximum impact velocity may be calculated according to the following equation:
V T ＝(W D /W T ) 0.5 V D ；
wherein, V T For the preset maximum impact velocity, W T W is the actual displacement of the test vessel D Design displacement, V, of a ship of a standard ship type designed for the target ship lift D Is the maximum impact velocity of a vessel of a standard ship type designed for the target ship lift. Of course, the preset maximum impact speed can be obtained by adopting the formula, and the preset maximum impact speed can be flexibly adjusted by combining different actual requirements on the basis of the formula, which is not listed one by one.
One way of sequentially adjusting the impact speed of a test vessel, including but not limited to, may be:
and controlling the test ship to take 10%, 25%, 50%, 75% and 100% of the preset maximum impact speed as the current test impact speed to carry out the impact test. Namely, by adopting a gradual change mode with gradually increasing speed, the change situation of the result caused by the speed increase can be better reflected, and the method is convenient to be carried out in practice.
Step 202: measuring the buffer distance of the test ship after each impact by using an automatic tracking total station erected on the navigation channel;
on the basis of step 201, this step is intended to measure the buffer distance of the test vessel after each impact by the execution body described above, using an automatic tracking total station erected on the flight.
Step 203: measuring the stress distribution of the rigid beam in each impact process by utilizing stress sensors uniformly arranged on a top web plate and a rear wing plate of the rigid beam of the ship lift;
on the basis of step 201, the step is to measure the stress distribution of the rigid beam in each impact process by using stress sensors uniformly arranged on a top web plate and a rear wing plate of the rigid beam of the ship lift by the execution main body, namely, the stress at two ends, a midspan and an impact position of a beam body of the rigid beam in the impact process of a real ship is monitored in real time.
Fig. 3 shows a schematic diagram of a structure in which stress sensors at 7 (i.e., U1-U7, S1-S7) are provided at the impact surface and the upper web of a rigid impact beam body.
Step 204: determining the deformation rule of the rigid beam according to the image shot by the rigid beam in each impact process;
on the basis of step 201, this step aims to utilize the high-speed camera to shoot the deformation (also called deformation) and the operating characteristics of the anti-collision beam by the execution main body, and further integrate to obtain the deformation rule.
Step 205: measuring load changes in the vertical direction in each impact process by using pressure sensors arranged at oil outlets of a rod cavity and a rodless cavity of the hydraulic oil cylinder;
on the basis of step 201, this step is intended to measure the load variation in the vertical direction during each impact by the execution body described above, using pressure sensors arranged at the oil outlets of the rod and rodless chambers of the hydraulic cylinder.
Fig. 4 shows a schematic structural diagram of a rigid beam 1, a hydraulic cylinder 4, a steel wire rope 5 and a pulley block 12 from another view different from that of fig. 1, namely, the pressure sensors described in this step are arranged at oil outlets of rod cavities and rodless cavities of the hydraulic cylinder 4 on two sides.
Step 206: and determining the anti-collision performance of the anti-collision system of the rigid beam based on the buffer distance, the stress distribution, the deformation rule and the load change.
On the basis of the steps 202 to 205, the step aims to determine the anti-collision performance of the anti-collision system of the rigid beam by the execution main body based on the buffer distance, the stress distribution, the deformation rule and the load change. In particular, the crashworthiness is mainly determined by the arresting capacity and the yield capacity, i.e. the actual yield of the rigid beam does not exceed the limit of the yield capacity with sufficient arresting distance.
The application provides a ship lift rigid beam collision avoidance system impact test method, regard the boats and ships of standard ship type, standard cargo capacity as the collision avoidance system that test boats and ships strike the rigid beam of ship lift with different speed, observe through detecting position, impact speed, buffer distance of boats and ships to and through carrying out performance monitoring to key parts such as rigid beam, wire rope, lift hydraulic cylinder, in order to obtain collision avoidance system's operating characteristic, so that aassessment is carried out to collision avoidance system's security and reliability.
In order to deepen the understanding of how to specifically evaluate the collision avoidance performance, the present embodiment further provides a flowchart of a method for determining collision avoidance performance through fig. 5, which specifically includes the following steps:
step 501: determining the blocking capacity of an anti-collision system according to the distance between the buffer distance and the actual distance from the rigid beam to the cabin door of the target ship lift;
the method comprises the following steps that whether a test ship is effectively blocked by an anti-collision system is judged by checking whether the buffer distance is smaller than the distance from a rigid beam to a cabin door or not through the execution main body, and whether the test ship has the blocking capacity meeting the requirements or not is further determined.
Step 502: determining a maximum stress of the rigid beam based on the load change;
on the basis of step 501, this step is intended to determine the maximum stress of the rigid beam based on the load variation by the execution body described above.
An implementation, including but not limited to, may be calculated according to the following formula:
σ max ＝F y l h tanθ/(8I)；
wherein σ max Is the maximum stress, F y For load change, l is the length of the rigid beam, θ is the bow inclination of the test vessel, h is the height of the rigid beam, and I is the section moment of inertia of the rigid beam. Of course, the above formula can also be finely adjusted according to practical situations, and is not particularly limited herein.
Step 503: determining whether the yield limit of the rigid beam is exceeded or not based on the stress distribution, the deformation rule and the maximum stress;
on the basis of step 502, this step is intended to determine whether the rigid beam has reached the yield limit or the strength limit from the above-mentioned executive body according to the stress distribution, the deformation law and the maximum stress of the rigid beam. That is, by checking whether the maximum stress exceeds the yield stress, if the maximum stress exceeds the yield stress for a short time, the maximum stress can be calculated as not exceeding the yield limit or the strength limit, and if the maximum stress exceeds the strength limit for a long time, the maximum stress can be directly judged as exceeding the yield limit.
Step 504: and determining that the anti-collision system of the rigid beam has the anti-collision performance meeting the preset anti-collision requirement in response to the condition that the blocking capacity meets the preset blocking requirement and the yield limit is not exceeded.
On the basis of step 503, this step is intended to determine that the anti-collision system of the rigid beam has the anti-collision performance meeting the preset anti-collision requirement only under the condition that the blocking capacity meets the requirement and the yield limit is not exceeded by the execution main body.
On the basis of any of the above embodiments, the automatic tracking total station may also be used to measure the real-time impact speed of the test ship at each impact, and dynamically adjust the speed of the test ship in real time according to the real-time impact speed, the preset impact speed to be reached by the current impact, and the current distance from the test ship to the rigid beam, so as to ensure that the test ship reaches the preset impact speed before the impact, thereby ensuring the effectiveness of the impact test.
It will be appreciated that the above embodiments refer to observations of the ship's hull and the collision avoidance system, where all observation parameters are controlled to be sampled synchronously for analysis.
Because the situation is complicated and cannot be illustrated by a list, a person skilled in the art can realize that many examples exist according to the basic method principle provided by the application and the practical situation, and the protection scope of the application should be protected without enough inventive work.
Referring to fig. 6, fig. 6 is a block diagram of a collision test apparatus 600 for a rigid beam of a ship lift according to an embodiment of the present disclosure, where the embodiment exists as an embodiment of an apparatus corresponding to the foregoing method embodiment, and the collision test apparatus 700 for a rigid beam of a ship lift may include:
the sequential impact control unit 601 is configured to respond to that an anti-collision system of a rigid beam of the target ship lift is in a work ship blocking state and a hydraulic oil cylinder is in a pressure maintaining locking state, and control the test ship to impact the rigid beam at different proportions of preset maximum impact speed in sequence; wherein, the hydraulic oil cylinder is arranged at two sides of the rigid beam;
a buffer distance measuring unit 602 configured to measure a buffer distance of the test vessel after each impact using an auto-tracking total station erected on the runway;
a stress distribution measuring unit 603 configured to measure a stress distribution of the rigid beam during each impact using stress sensors uniformly provided on a top web and a rear wing plate of the rigid beam of the ship lift;
a deformation rule determining unit 604 configured to determine a deformation rule of the rigid beam from an image taken of the rigid beam during each impact;
a load change measuring unit 605 configured to measure a load change in a vertical direction during each impact using pressure sensors provided at oil outlets of the rod chamber and the rodless chamber of the hydraulic cylinder;
and an anti-collision performance determination unit 606 configured to determine the anti-collision performance of the anti-collision system of the rigid beam based on the buffer distance, the stress distribution, the deformation rule and the load change.
In some alternative embodiments, the model of the test vessel corresponds to a standard model designed for the target vessel lift, and the cargo capacity of the test vessel corresponds to a standard cargo capacity corresponding to the standard model designed for the target vessel lift.
In some alternative embodiments, the predetermined maximum impact velocity is calculated according to the following equation:
V T ＝(W D /W T ) 0.5 V D ；
wherein, V T To preset maximum impact velocity, W T For testing actual displacement of ships, W D Design displacement, V, of a ship of a standard ship type designed for a target ship lift D Is the maximum impact velocity of a vessel of a standard ship type designed for the target ship lift.
In some optional other embodiments, the ship lift rigid beam collision avoidance system impact test apparatus 600 may further include:
controlling the test ship to keep a preset distance from the rigid beam before the test ship starts to impact the rigid beam each time;
control is started when the water surface fluctuation degree is smaller than the preset degree at each impact.
In some optional other embodiments, the ship lift rigid beam collision avoidance system impact test apparatus 600 may further include:
measuring the real-time impact speed of the test ship at each impact by using an automatic tracking total station;
and adjusting the speed of the test ship according to the real-time impact speed, the preset impact speed which is required to be reached by the current impact and the current distance between the test ship and the rigid beam.
In some optional other embodiments, the collision avoidance performance determination unit may be further configured to:
determining the blocking capacity of the anti-collision system according to the distance between the buffer distance and the actual distance from the rigid beam to the chamber door of the target ship lift;
determining a maximum stress of the rigid beam based on the load change;
determining whether the yield limit of the rigid beam is exceeded or not based on the stress distribution, the deformation rule and the maximum stress;
and determining that the anti-collision system of the rigid beam has the anti-collision performance meeting the preset anti-collision requirement in response to the condition that the blocking capacity meets the preset blocking requirement and the yield limit is not exceeded.
In some alternative embodiments, the maximum stress of the rigid beam is calculated as follows:
σ max ＝F y l h tanθ/(8I)；
wherein σ max To yield limit, F y For load change, l is the length of the rigid beam, θ is the bow inclination of the test vessel, h is the height of the rigid beam, and I is the section moment of inertia of the rigid beam.
This embodiment exists as an apparatus embodiment corresponding to the method embodiment described above.
The ship of standard ship type, standard cargo capacity is regarded as the crashproof system that the rigid beam of test boats and ships striking the ship lift at different speeds with the crashproof system of rigid beam, observes through the position, the impact velocity, the buffer distance that detect boats and ships to and carry out performance monitoring to key parts such as rigid beam, wire rope, lift hydraulic cylinder, in order to obtain the operating characteristic of crashproof system, so that assess the security and the reliability of crashproof system.
Based on the foregoing embodiments, the present application further provides an electronic device, which may include a memory and a processor, where the memory stores a computer program, and the processor, when calling the computer program in the memory, may implement the steps provided by the foregoing embodiments. Of course, the electronic device may also include various necessary network interfaces, power supplies, other components, and the like.
The present application also provides a computer-readable storage medium, on which a computer program is stored, which, when executed by an execution terminal or processor, can implement the steps provided by the above-mentioned embodiments. The storage medium may include: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative components and steps have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.
The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It will be apparent to those skilled in the art that various changes and modifications can be made in the present invention without departing from the principles of the invention, and these changes and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.
Claims (10)
1. A ship lift rigid beam collision avoidance system impact test method is characterized by comprising the following steps:
responding to the situation that an anti-collision system of a rigid beam of a target ship lift is in a working ship blocking state and a hydraulic oil cylinder is in a pressure maintaining locking state, and controlling a test ship to sequentially impact the rigid beam at different proportions of preset maximum impact speed; the hydraulic oil cylinders are arranged on two sides of the rigid beam;
measuring the buffer distance of the test ship after each impact by using an automatic tracking type total station erected on an airway;
measuring the stress distribution of the rigid beam in each impact process by utilizing stress sensors uniformly arranged on a top web plate and a rear wing plate of the rigid beam of the ship lift;
determining a deformation rule of the rigid beam according to an image shot by the rigid beam in each impact process;
measuring load changes in the vertical direction in each impact process by using pressure sensors arranged at oil outlets of a rod cavity and a rodless cavity of the hydraulic oil cylinder;
and determining the anti-collision performance of the anti-collision system of the rigid beam based on the buffer distance, the stress distribution, the deformation rule and the load change.
2. The method of claim 1, wherein the model of the test vessel corresponds to a standard model designed for the target vessel lift and the cargo capacity of the test vessel corresponds to a standard cargo capacity corresponding to the standard model designed for the target vessel lift.
3. The method of claim 1, wherein the predetermined maximum impact velocity is calculated according to the following equation:
V T ＝(W D /W T ) 0.5 V D ；
wherein, V T For said preset maximum impact velocity, W T Is the actual displacement of the test vessel, W D Design displacement, V, of a ship of a standard ship type designed for said target ship lift D Is the target ship liftMaximum impact velocity for a vessel of the standard ship type is designed.
4. The method of claim 1, further comprising:
controlling the test vessel to keep a preset distance from the rigid beam before starting to impact the rigid beam;
control is started when the water surface fluctuation degree is smaller than the preset degree at each impact.
5. The method of claim 1, further comprising:
measuring the real-time impact speed of the test ship at each impact by using the automatic tracking total station;
and adjusting the speed of the test ship according to the real-time impact speed, the preset impact speed which is required to be reached by the current impact and the current distance between the test ship and the rigid beam.
6. The method according to any one of claims 1 to 5, wherein the determining the collision avoidance performance of the collision avoidance system of the rigid beam based on the buffer distance, the stress distribution, the deformation law, and the load change comprises:
determining the blocking capacity of the anti-collision system according to the buffer distance and the actual distance from the rigid beam to the cabin door of the target ship lift;
determining a maximum stress of the rigid beam based on the load change;
determining whether the yield limit of the rigid beam is exceeded or not based on the stress distribution, the deformation rule and the maximum stress;
and determining that the anti-collision system of the rigid beam has the anti-collision performance meeting the preset anti-collision requirement in response to the blocking capacity meeting the preset blocking requirement and not exceeding the yield limit.
7. The method of claim 6, wherein the maximum stress of the rigid beam is calculated as:
σ max ＝F y lh tanθ/(8I)；
wherein σ max Is the maximum stress, F y And for the load change, l is the length of the rigid beam, theta is the inclination angle of the bow of the test ship, h is the height of the rigid beam, and I is the section moment of inertia of the rigid beam.
8. The utility model provides a ship lift rigid beam collision avoidance system impact test device which characterized in that includes:
the sequential impact control unit is configured to respond to that an anti-collision system of a rigid beam of the target ship lift is in a work ship blocking state and a hydraulic oil cylinder is in a pressure maintaining locking state, and control the test ship to impact the rigid beam at different proportions of preset maximum impact speed in sequence; the hydraulic oil cylinders are arranged on two sides of the rigid beam;
a buffer distance measuring unit configured to measure a buffer distance of the test vessel after each impact using an auto-tracking total station erected on a flight;
a stress distribution measuring unit configured to measure a stress distribution of the rigid beam during each impact using stress sensors uniformly disposed on a top web and a rear wing plate of the ship lift rigid beam;
a deformation rule determining unit configured to determine a deformation rule of the rigid beam according to an image of the rigid beam captured during each impact;
a load change measuring unit configured to measure a load change in a vertical direction during each impact using pressure sensors provided at oil outlets of a rod chamber and a rodless chamber of the hydraulic cylinder;
an anti-collision performance determination unit configured to determine an anti-collision performance of an anti-collision system of the rigid beam based on the buffer distance, the stress distribution, the deformation law, and the load change.
9. An electronic device, comprising:
a memory for a computer program;
a processor for implementing the steps of the ship lift rigid beam collision avoidance system impact test method of any one of claims 1 to 7 when executing the computer program stored on the memory.
10. A readable storage medium having stored thereon a computer program which, when executed by a processor, causes the steps of a method of impact testing a rigid beam impact avoidance system for a ship lift according to any of claims 1 to 7 to be carried out.
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