CN115839813B - Impact test method for rigid beam anti-collision system of ship lift and related components - Google Patents
Impact test method for rigid beam anti-collision system of ship lift and related components Download PDFInfo
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- 230000000903 blocking effect Effects 0.000 claims abstract description 17
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- 239000003921 oil Substances 0.000 claims abstract description 10
- 230000004044 response Effects 0.000 claims abstract description 10
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 4
- 238000004590 computer program Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 238000010998 test method Methods 0.000 claims description 6
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Abstract
The application discloses ship lift rigid beam collision avoidance system impact test method and related components, including: in response to the collision avoidance system of the rigid beam of the target ship lift being in a working ship blocking state and the hydraulic cylinder being in a pressure maintaining locking state, controlling the test ship to sequentially strike the rigid beam at different proportions of a preset maximum striking speed; measuring the buffer distance of the test ship after each collision by using an automatic tracking total station erected on the channel; measuring stress distribution of the rigid beam in each collision process by using stress sensors uniformly arranged on a web plate at the top and a wing plate at the rear part of the rigid beam of the ship lift; determining a deformation rule of the rigid beam according to images shot on the rigid beam in each impact process; measuring the load change in the vertical direction during each impact 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 present disclosure relates to the field of ship lifts, and in particular, to a method and apparatus for impact test of a rigid beam collision avoidance system of a ship lift, an electronic device, and a computer readable storage medium.
Background
The ship lift is one of inland navigation building types, and is an effective way for solving the problem of high-efficiency navigation of a large hydropower station. In recent years, the ship lifts in China are developed rapidly, and a large number of ultra-large vertical ship lifts such as three gorges ship lifts, three-stage ship lifts for the beaches, a Cilin ship lift, a Sha Tuo ship lift and the like are built in sequence. The ship lift is used as a hydropower station high-dam navigation facility, and the large-scale ship is borne to climb over the hundred-meter high-dam, so that the equipment reliability and the safety are the safety guarantee of the operation of the large-scale ship.
The ship lift collision avoidance system is used as important equipment for ensuring the operation safety of a large ship lift, is an interception device for preventing a ship from stalling to strike a ship compartment door, and is similar to a blocking rope of an aircraft carrier. At present, two common forms of collision avoidance systems exist for domestic ship lifts, one is a three gorges ship lift and a steel wire rope flexible collision avoidance system adopted for a home dam ship lift, and the other is a relatively common rigid beam (also called a rigid collision avoidance beam) collision avoidance system adopted for a beach ship lift, a Cilin ship lift, a Sha Tuo ship lift and the like. Because the domestic ship lift is started later, many core equipment, especially safety guarantee equipment, still stay only in theoretical research design stage, lack the test verification of developing its security and reliability.
Disclosure of Invention
The application aims to provide a ship lift rigid beam collision avoidance system collision test method, a ship lift rigid beam collision avoidance system collision test device, electronic equipment and a computer readable storage medium.
To achieve the above object, the present application provides, in a first aspect, a ship lift rigid beam collision avoidance system collision test method, including: in response to the collision avoidance system of the rigid beam of the target ship lift being in a working ship blocking state and the hydraulic cylinder being in a pressure maintaining locking state, controlling the test ship to sequentially strike the rigid beam at different proportions of a preset maximum striking speed; the hydraulic cylinders are arranged on two sides of the rigid beam; measuring the buffer distance of the test ship after each collision by using an automatic tracking total station erected on the channel; measuring stress distribution of the rigid beam in each collision process by using stress sensors uniformly arranged on a web plate at the top and a wing plate at the rear part of the rigid beam of the ship lift; determining a deformation rule of the rigid beam according to images shot on the rigid beam in each impact process; measuring the load change in the vertical direction during each impact 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.
To achieve the above object, the present application provides in a second aspect a ship lift rigid beam collision avoidance system collision test apparatus, the apparatus comprising: the sequential impact control unit is configured to control the test ship to impact the rigid beams in different proportions of a preset maximum impact speed sequentially in response to the fact that the anti-collision system of the rigid beams of the target ship lift is in a working ship blocking state and the hydraulic cylinder is in a pressure maintaining locking state; the hydraulic 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 automatic tracking total station installed on the channel; a stress distribution measuring unit configured to measure stress distribution of the rigid beam during each impact by using stress sensors uniformly arranged on a top web plate and a rear wing plate of the rigid beam of the ship lift; the deformation rule determining unit is configured to determine the deformation rule of the rigid beam according to the image shot on the rigid beam in each impact process; a load change measurement 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 an anti-collision performance determining unit 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 law and the load change.
To achieve the above object, the present application provides, in a third aspect, an electronic device including:
a memory for storing a computer program;
a processor for performing the steps of the ship lift rigid beam collision avoidance system impact test method as described in the first aspect above when executing a computer program stored on a memory.
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, implements the steps of the impact test of the rigid beam impact system of a ship lift as described in the first aspect.
According to the collision test scheme for the rigid beam collision avoidance system of the ship lift, provided by the application, the ship with standard ship type and standard cargo capacity is used as a collision avoidance system for testing the rigid beam of the ship lift by collision of ships at different speeds, the position, the collision speed and the buffer distance of the ship are detected to observe, and the performance of key components such as the rigid beam, the steel wire rope and the lifting hydraulic cylinder is monitored to obtain the working characteristics of the collision avoidance system, so that the safety and the reliability of the collision avoidance system are evaluated.
The application also provides a ship lift rigid beam collision avoidance system collision test device, electronic equipment and a computer readable storage medium, which have the beneficial effects and are not repeated here.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present application, and that other drawings may be obtained according to the provided drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic diagram of an overall structure of a rigid beam collision avoidance system of a ship lift according to an embodiment of the present application;
fig. 2 is a flowchart of a method for impact test of a rigid beam collision avoidance system of a ship lift according to an embodiment of the present application;
FIG. 3 is a schematic view of the arrangement of 7 stress sensors on the impact surface and the upper web of the rigid anti-collision beam body according to the embodiment of the present application;
fig. 4 is a schematic structural diagram of a lifting hydraulic cylinder provided at two sides of a rigid anti-collision beam according to an embodiment of the present application;
FIG. 5 is a flowchart of a method for determining crashworthiness according to an embodiment of the present application;
fig. 6 is a block diagram of a bump test device for a rigid beam bump protection system of a ship lift according to an embodiment of the present application;
reference numerals:
the ship lift ship-receiving chamber 1, a test ship 2, a rigid beam 3, a hydraulic cylinder 4, a steel wire rope 5, a hydraulic cylinder piston rod 6, an automatic tracking 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
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of 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 apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
For convenience in understanding the overall structure of the rigid beam of the ship lift and the collision avoidance system thereof, the whole structural schematic diagram of the collision avoidance system collision test platform of the rigid beam of the ship lift is shown in fig. 1:
wherein, this test platform includes: the ship lift ship-receiving chamber 1, a test ship 2, a rigid beam 3, a hydraulic cylinder 4, a steel wire rope 5, a hydraulic cylinder piston rod 6, an automatic tracking 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 fig. 1 is provided with a rigid anti-collision system at the lock head and the working door side of the ship carriage respectively, and the anti-collision system consists of a rigid anti-collision beam, a steel wire rope, a pulley block and a lifting hydraulic cylinder.
On the basis of the overall structure schematic diagram shown in fig. 1, the application also provides a flow chart of a ship lift rigid beam collision avoidance system collision test method through fig. 2, which comprises the following steps:
step 201: in response to the collision avoidance system of the rigid beam of the target ship lift being in a working ship blocking state and the hydraulic cylinder being in a pressure maintaining locking state, controlling the test ship to sequentially strike the rigid beam at different proportions of a preset maximum striking speed;
the present step aims to control a test ship to sequentially strike the rigid beams at different proportions of a preset maximum striking speed by an execution main body (such as 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) suitable for executing the ship lift rigid beam collision test method provided by the present application under a safe state of ensuring that the collision avoidance 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 and locking state. The hydraulic cylinders are arranged on two sides of the rigid beam, namely, one hydraulic cylinder is arranged on each of two sides of the rigid beam.
Furthermore, before 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 locking state, whether the anti-collision beam, the steel wire rope, the cable joint, the pulley block, the lifting hydraulic cylinder and the accessory mechanism are in a normal working state can be checked, so that 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 load capacity of the test ship is consistent with the standard load capacity corresponding to the standard ship type designed for the target ship lift. Before each impact, controlling the ship consistent with the standard ship shape to stop on the channel according to the standard cargo capacity, and keeping a sufficient distance from the rigid beam so as to accelerate the ship to a preset impact speed for each impact and adjust the ship to a uniform speed state. In addition, in order to avoid the occurrence of variation caused by continuous impact test for multiple times, the method can also control the start of each impact when the fluctuation degree of the water surface is smaller than the preset degree, namely, the horizontal plane is required to be kept as stable as possible before the start of each impact test so as to eliminate the difference caused by the unstable water surface as much as possible.
In some other embodiments, the preset maximum impact velocity may be calculated according to the following formula:
V T ＝(W D /W T ) 0.5 V D ；
wherein V is T For the preset maximum striking speed, W T For the actual displacement of the test vessel, W D Is the designed displacement, V, of a standard ship designed for the target ship lift D Is the maximum impact velocity of a standard ship designed for the target ship lift. Of course, besides the above formula is adopted to calculate the preset maximum impact speed, the preset maximum impact speed can be flexibly adjusted according to different actual requirements based on the calculation formula, which is not listed here.
The impact speed of the test vessel may be adjusted in a manner including, but not limited to:
the test ship is controlled to sequentially take 10%, 25%, 50%, 75% and 100% of the preset maximum impact speed as the current test impact speed so as to carry out the impact test. Namely, by adopting a gradual change mode with gradually increased speed, the change condition of the result generated by the speed increase can be better reflected, and the method is convenient to carry out in practice.
Step 202: measuring the buffer distance of the test ship after each collision by using an automatic tracking total station erected on the channel;
on the basis of step 201, this step aims at measuring the buffer distance of the test vessel after each impact by the above-mentioned execution subject using an automatic tracking total station installed on the channel.
Step 203: measuring stress distribution of the rigid beam in each collision process by using stress sensors uniformly arranged on a web plate at the top and a wing plate at the rear part of the rigid beam of the ship lift;
on the basis of step 201, the step aims to measure the stress distribution of the rigid beam in each impact process by using the stress sensors uniformly arranged on the top web plate and the rear wing plate of the rigid beam of the ship lift by the execution main body, namely, the stress at the two ends, the midspan and the impact position of the rigid beam in the impact process of a real ship is monitored in real time.
Fig. 3 shows a schematic structural diagram of a stress sensor with 7 positions (i.e., U1-U7, S1-S7) at the impact surface and upper web of a rigid anti-collision beam body.
Step 204: determining a deformation rule of the rigid beam according to images shot on the rigid beam in each impact process;
based on step 201, the present step aims to use the high-speed camera to shoot the deformation (also called deformation) and operation characteristics of the anti-collision beam by the execution body, so as to integrate and obtain the deformation rule.
Step 205: measuring the load change in the vertical direction during each impact 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 aims to measure the load change in the vertical direction during each impact by the above-described execution body using pressure sensors provided at the rod-cavity and rodless-cavity outlets of the hydraulic cylinder.
Fig. 4 shows a schematic structural diagram of the hydraulic cylinder 4, the steel wire rope 5 and the pulley block 12, which are different from fig. 1, from another view, namely, the pressure sensors are arranged at the oil outlets of the rod cavities and the rodless cavities of the hydraulic cylinder 4 at 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 202-205, the step aims at 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 of the execution main body. In particular, the crash performance is mainly determined by the stopping power and the yielding power, i.e. having a sufficient stopping distance, the actual yield of the rigid beam does not exceed the limit of the yielding power.
According to the ship lift rigid beam collision avoidance system collision avoidance test method, the ship with standard ship type and standard cargo capacity is used as a collision avoidance system for testing the ship to strike the rigid beam of the ship lift at different speeds, the position, the collision speed and the buffer distance of the ship are detected to observe, and the performance of key components such as the rigid beam, the steel wire rope and the lifting hydraulic cylinder is monitored to obtain the working characteristics of the collision avoidance system, so that the safety and the reliability of the collision avoidance system are evaluated.
To enhance the understanding of how the crashworthiness portion is evaluated in particular, the present embodiment also provides a flowchart of a method for determining crashworthiness by means of fig. 5, comprising in particular the following steps:
step 501: determining the blocking capacity of the anti-collision system according to the distance between the buffer distance and the actual distance between the rigid beam and the ship compartment door of the target ship lift;
the method aims at judging whether the test ship is effectively blocked by the anti-collision system or not by checking whether the buffer distance is smaller than the distance from the rigid beam to the ship compartment door or not by the execution main body, and further determining whether the test ship has blocking capability meeting the requirement or not.
Step 502: determining a maximum stress of the rigid beam based on the load change;
on the basis of step 501, this step aims at determining the maximum stress of the rigid beam based on the load variation by the above-described execution body.
An implementation, including but not limited to, may be calculated according to the following formula:
σ max ＝F y l h tanθ/(8I)；
wherein sigma max For 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 foregoing formula may be fine-tuned according to practical situations, which is not specifically limited herein.
Step 503: determining whether the yield limit of the rigid beam is exceeded based on the stress distribution, the deformation law and the maximum stress;
based on step 502, this step aims at judging whether the rigid beam reaches the yield limit or the strength limit according to the stress distribution, the deformation rule and the maximum stress of the rigid beam by the execution body. That is, by checking whether the maximum stress exceeds the yield stress, it may be possible to calculate that the yield limit or the strength limit is not exceeded if the maximum stress exceeds the yield stress for a short period of time, and it may be determined that the yield limit is exceeded if the maximum stress exceeds the yield limit for a long period of time.
Step 504: and determining that the collision avoidance system of the rigid beam has collision avoidance performance meeting the preset collision avoidance requirement in response to the stopping capability meeting the preset stopping requirement and not exceeding the yield limit.
Based on step 503, this step is aimed at determining, by the above-mentioned executing body, that the collision avoidance system of the rigid beam has collision avoidance performance meeting the preset collision avoidance requirement only if the blocking capability meets the requirement and the yield limit is not exceeded.
On the basis of any embodiment, the automatic tracking total station can also be used for measuring the real-time impact speed of the test ship during each impact, and dynamically adjusting the speed of the test ship in real time according to the real-time impact speed, the preset impact speed reached by the current impact and the current distance between the test ship and the rigid beam so as to ensure that the preset impact speed is reached before the impact, thereby ensuring the effectiveness of the impact test.
It should be appreciated that the observations made on the car and collision avoidance system as mentioned in the above embodiments should control all of the observed parameters to be sampled synchronously for analysis.
Because of the complexity and cannot be illustrated by one, those skilled in the art will recognize that many examples exist in accordance with the basic method principles provided herein in combination with actual situations, which are within the scope of the present application without significant inventive effort.
Referring now to fig. 6, fig. 6 is a block diagram of a crash test apparatus 600 for a rigid beam crash system of a ship lift according to an embodiment of the present application, where the crash test apparatus 700 for a rigid beam crash system of a ship lift includes:
the sequential impact control unit 601 is configured to control the test ship to impact the rigid beams in different proportions of a preset maximum impact speed sequentially in response to the collision avoidance system of the rigid beams of the target ship lift being in a working ship blocking state and the hydraulic cylinder being in a pressure maintaining locking state; the hydraulic cylinders are arranged on 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 automatic tracking total station installed on the channel;
a stress distribution measuring unit 603 configured to measure stress distribution of the rigid beam during each impact using stress sensors uniformly arranged on the top web and the rear wing plate of the rigid beam of the ship lift;
a deformation law determining unit 604 configured to determine a deformation law of the rigid beam from an image photographed during each impact to the rigid beam;
a load change measurement unit 605 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;
the crashworthiness determination unit 606 is configured to determine crashworthiness of the crashworthiness system of the rigid beam based on the buffer distance, stress distribution, deformation law, load variation.
In some alternative other embodiments, the model of the test vessel is consistent with a standard model designed for the target ship lift, and the load of the test vessel is consistent with a standard load corresponding to the standard model designed for the target ship lift.
In some alternative other embodiments, the preset maximum impact velocity is calculated according to the following formula:
V T ＝(W D /W T ) 0.5 V D ；
wherein V is T To preset the maximum striking speed, W T To test the actual displacement of the vessel, W D Designed displacement, V, of a standard ship designed for a target ship lift D Is the maximum impact velocity of a standard ship designed for a target ship lift.
In some alternative other embodiments, the ship lift rigid beam collision avoidance system impact test device 600 may further comprise:
controlling the test ship to keep a preset distance from the rigid beam before the test ship starts to strike the rigid beam each time;
control begins each time the level of water surface fluctuation is less than a preset level.
In some alternative other embodiments, the ship lift rigid beam collision avoidance system impact test device 600 may further comprise:
measuring the real-time impact speed of the test ship during 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 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 between the rigid beam and the ship compartment 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 based on the stress distribution, the deformation law and the maximum stress;
and determining that the collision avoidance system of the rigid beam has collision avoidance performance meeting the preset collision avoidance requirement in response to the stopping capability meeting the preset stopping requirement and not exceeding the yield limit.
In some alternative other embodiments, the maximum stress of the rigid beam is calculated as:
σ max ＝F y l h tanθ/(8I)；
wherein sigma max For 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.
The present embodiment exists as an apparatus embodiment corresponding to the above-described method embodiment.
According to the ship lift rigid beam collision avoidance system collision test device, the ship with standard ship type and standard cargo capacity is used as the collision avoidance system for testing the ship to strike the rigid beam of the ship lift at different speeds, the position, the collision speed and the buffer distance of the ship are detected to observe, and the performance of key components such as the rigid beam, the steel wire rope and the lifting hydraulic cylinder is monitored to obtain the working characteristics of the collision avoidance system, so that the safety and the reliability of the collision avoidance system are evaluated.
Based on the above embodiment, the present application further provides an electronic device, where the electronic device may include a memory and a processor, where the memory stores a computer program, and the processor may implement the steps provided in the above embodiment when calling the computer program in the memory. Of course, the electronic device may also include various necessary network interfaces, power supplies, and other components, etc.
The present application also provides a computer-readable storage medium having stored thereon a computer program which, when executed by an execution terminal or a processor, can implement the steps provided by the above embodiments. The storage medium may include: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
In the description, each embodiment is described in a progressive manner, and each embodiment is mainly described by the differences from other embodiments, so that the same similar parts among the embodiments are mutually referred. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
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 elements and steps are described above generally in terms of functionality in order to clearly illustrate the 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 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.
Specific examples are set forth herein to illustrate the principles and embodiments of the present application, and the description of the examples above is only intended to assist in understanding the methods of the present application and their core ideas. It will be apparent to those skilled in the art that various changes and modifications can be made herein without departing from the principles of the application, which are intended to be covered by the appended claims.
It should also be noted that in this 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. Moreover, 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 phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
Claims (9)
1. The collision test method for the rigid beam collision avoidance system of the ship lift is characterized by comprising the following steps of:
in response to the collision avoidance system of the rigid beam of the target ship lift being in a working ship blocking state and the hydraulic cylinder being in a pressure maintaining locking state, controlling the test ship to sequentially strike the rigid beam at different proportions of a preset maximum striking speed; the hydraulic cylinders are arranged on two sides of the rigid beam;
measuring the buffer distance of the test ship after each collision by using an automatic tracking total station arranged on a channel;
measuring stress distribution of the rigid beam in each collision process by using stress sensors uniformly arranged on a web plate at the top and a wing plate at the rear part of the rigid beam of the ship lift;
determining a deformation rule of the rigid beam according to an image shot on the rigid beam in each impact process;
measuring the load change in the vertical direction during each impact by using pressure sensors arranged at oil outlets of a rod cavity and a rodless cavity of the hydraulic oil cylinder;
determining the anti-collision performance of an anti-collision system of the rigid beam based on the buffer distance, the stress distribution, the deformation rule and the load change;
the preset maximum impact speed is calculated according to the following formula:
V T ＝(W D /W T ) 0.5 V D ；
wherein V is T For the preset maximum striking speed, W T For the actual displacement of the test vessel, W D Is the designed displacement, V, of a standard ship designed for the target ship lift D Is the maximum impact speed of a standard ship designed for the target ship lift.
2. The method of claim 1, wherein the model of the test vessel corresponds to a standard model designed for the target ship lift and the load of the test vessel corresponds to a standard load corresponding to a standard model designed for the target ship lift.
3. The method as recited in claim 1, further comprising:
controlling the test ship to keep a preset distance from the rigid beam before the test ship starts to strike the rigid beam each time;
control begins each time the level of water surface fluctuation is less than a preset level.
4. The method as recited in 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 reached by the current impact and the current distance between the test ship and the rigid beam.
5. The method of any of claims 1-4, wherein the determining the impact performance of the impact system of the rigid beam based on the buffer distance, the stress distribution, the deformation law, the load variation comprises:
determining the blocking capacity of the anti-collision system according to the distance between the buffer distance and the actual distance between the rigid beam and the ship compartment door of the target ship lift;
determining a maximum stress of the rigid beam based on the load change;
determining whether a yield limit of the rigid beam is exceeded based on the stress distribution, deformation law, and the maximum stress;
and determining that the collision avoidance system of the rigid beam has collision avoidance performance meeting preset collision avoidance requirements in response to the blocking capability meeting the preset blocking requirement and not exceeding the yield limit.
6. The method of claim 5, wherein the maximum stress of the rigid beam is calculated according to the formula:
σ max ＝F y lhtanθ/(8I)；
wherein sigma max For the maximum stress, F y For the 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.
7. The utility model provides a ship lift rigid beam collision avoidance system impact test device which characterized in that includes:
the system comprises a sequential impact control unit, a hydraulic cylinder, a hydraulic control unit and a control unit, wherein the sequential impact control unit is configured to control a test ship to sequentially impact a rigid beam of a target ship lift at different proportions of a preset maximum impact speed in response to the fact that an anti-collision system of the rigid beam is in a work ship blocking state and the hydraulic cylinder is in a pressure maintaining locking state; the hydraulic 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 collision using an automatic tracking total station installed on a channel;
a stress distribution measuring unit configured to measure stress distribution of the rigid beam during each impact by using stress sensors uniformly arranged on a top web and a rear wing plate of the rigid beam of the ship lift;
a deformation law determining unit configured to determine a deformation law of the rigid beam according to an image photographed by the rigid beam during each impact;
a load change measurement 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 determining 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, the load variation;
the preset maximum impact speed is calculated according to the following formula:
V T ＝(W D /W T ) 0.5 V D ；
wherein V is T For the preset maximum striking speed, W T For the actual displacement of the test vessel, W D Is the designed displacement, V, of a standard ship designed for the target ship lift D Is the maximum impact speed of a standard ship designed for the target ship lift.
8. An electronic device, comprising:
a memory for a computer program;
a processor for carrying out the steps of the ship lift rigid beam collision avoidance system impact test method of any one of claims 1 to 6 when executing a computer program stored on said memory.
9. A readable storage medium, wherein a computer program is stored on the readable storage medium, and the computer program, when executed by a processor, can implement the steps of the ship lift rigid beam collision avoidance system impact test method according to any one of claims 1 to 6.
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