CN216559704U - Test device for researching motion state of ship anchor in water - Google Patents
Test device for researching motion state of ship anchor in water Download PDFInfo
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- CN216559704U CN216559704U CN202220888180.1U CN202220888180U CN216559704U CN 216559704 U CN216559704 U CN 216559704U CN 202220888180 U CN202220888180 U CN 202220888180U CN 216559704 U CN216559704 U CN 216559704U
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Abstract
The utility model discloses a test device for researching the motion state of a ship anchor in water, which comprises a support, a test cylinder, a model ship anchor, a ship anchor fixing component and an anchor falling unlocking component, wherein the model ship anchor is hung on the ship anchor fixing component in a first state, the ship anchor enters the test cylinder along the top of the test cylinder to do falling motion in a second state, the anchor falling unlocking component is used for switching the model ship anchor from the first state to the second state, and the detection component is used for acquiring the motion track and the motion speed of the model ship anchor in water. The utility model has the advantages that the movement speed and the movement track of the model anchor in water are measured by the magnetic resistor and the reed pipe on the monitoring ring, the test repeatability is strong, and the operation is simple.
Description
Technical Field
The utility model relates to the technical field of water transport engineering simulation test devices, in particular to a test device for researching the motion state of a ship anchor in water.
Background
With the gradual increase of marine oil platform construction in China, the phenomenon that an oil pipeline passes through a ship anchoring area often exists, and when a ship anchor is broken down and lands on the seabed, the submarine pipeline exposed on the seabed or buried at a shallow depth can be seriously damaged by power impact due to the large weight of the anchor.
The speed of the ship anchor moving in the water to contact with the soil surface is defined as the bottom contact speed, and the size of the bottom contact speed is an important factor for evaluating the influence of anchor damage on the submarine pipeline. Therefore, it is very critical to obtain parameters such as the motion state and the motion speed of the ship anchor in the water. In scientific research in the field of submarine pipeline protection, a test device and a test method capable of researching the motion state and the bottoming speed of a ship anchor in water are needed, and parameters are provided for the subsequent submarine pipeline protection measure research through the research on the parameters such as the motion state, the bottoming speed and the like of the ship anchor. In the prior art, a model ship anchor falls down from a certain height, a camera is fixed beside the model ship anchor, and then the camera is used for shooting the motion trail of the model ship anchor, but the speed of the model ship anchor at different positions can only be calculated in the mode, and the motion trail of the model ship anchor cannot be clearly recorded.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and designs a test device for researching the motion state of a ship anchor in water, which comprises a support, a test cylinder, a model ship anchor, a ship anchor fixing assembly and an anchor falling unlocking assembly, wherein the model ship anchor is hung on the ship anchor fixing assembly when in a first state, the ship anchor enters the test cylinder along the top of the test cylinder to move in a falling body mode when in a second state, the anchor falling unlocking assembly is used for switching the model ship anchor from the first state to the second state, and the detection assembly is used for acquiring the motion track and the motion speed of the model ship anchor in water.
Further, the detection assembly comprises a monitoring ring and a collecting instrument, and the monitoring ring is provided with a plurality of monitoring rings along the length direction of the test cylinder.
Furthermore, the monitoring ring comprises a magnetic resistor and a reed switch, the magnetic resistor and the reed switch are both fixed on the test cylinder, the magnetic resistor is electrically connected with the acquisition instrument, the reed switch is electrically connected with the acquisition instrument, the magnetic resistor is used for measuring the size of a magnetic field signal, and the reed switch is used for measuring the on-off of the signal.
Furthermore, the magnetoresistors in any one of the monitoring rings are uniformly distributed along the circumferential direction of the test cylinder, and the reed pipes in any one of the monitoring rings are uniformly distributed along the circumferential direction of the test cylinder.
Further, the fixed subassembly of ship anchor includes first support and round pin axle, first support and support fixed connection, wear to be equipped with the round pin axle on the first support.
Further, the anchor falling unlocking assembly comprises a fixing portion and a locking portion, the fixing portion is fixedly connected with the support, and the locking portion is matched with the fixing portion to achieve switching between a locking state and an unlocking state of the model ship anchor.
Furthermore, the locking part comprises a first connecting rod, a second connecting rod and a pulling piece, one end of the first connecting rod is rotatably connected with one end, penetrating out of the first support, of the pin shaft, the other end of the first connecting rod is rotatably connected with the second connecting rod, and the pulling piece is fixed at the end part of the second connecting rod.
Furthermore, the fixed part is a second support, the second connecting rod is L-shaped, two ends of the second connecting rod are respectively connected with the first connecting rod in a rotating mode and the pulling piece in a fixed mode, and the middle of the second connecting rod is connected with the second support in a rotating mode.
Further, the support includes base, stand and crossbeam, the base is fixed with the stand, the stand is fixed with the crossbeam, be fixed with first support and second support on the crossbeam, the base is C type open structure, test section of thick bamboo is located inside the C type opening.
Further, the test cylinder includes cylinder section and tetragonal section, the cylinder section with tetragonal section intercommunication each other, tetragonal section detachable connection has sealed apron.
The test device for researching the motion state of the ship anchor in water, which is manufactured by the technical scheme of the utility model, has the following beneficial effects: measuring the motion speed and the motion trail of the model anchor in water through a magnetic resistor and a reed switch on the monitoring ring, and detecting two indexes of the motion speed and the motion trail through one-time falling motion of the model ship anchor; aiming at different model ship anchors, the anchor falling unlocking assembly can be adjusted to enable the ship anchor fixing assembly to be in a locking state or an unlocking state, so that a repeatability test can be performed, the test repeatability is strong, and the operation is simple.
Drawings
FIG. 1 is a perspective view of a test device for investigating the motion state of a ship anchor in water according to the present invention;
FIG. 2 is an enlarged fragmentary view of FIG. 1 of the present invention at reference A;
FIG. 3 is a top view of a test cartridge of the present invention;
FIG. 4 is an enlarged fragmentary view of FIG. 1 of the present invention at reference B;
FIG. 5 is a schematic view of the anchor fixing assembly and the anchor dropping unlocking assembly of the present invention in use;
FIG. 6 is a front view of a test cartridge of the present invention;
FIG. 7 is a graph of the velocity of movement versus height value for a model ship anchor of the present invention;
FIG. 8 is a reference schematic view of the trajectory of motion of the model ship anchor of the present invention;
in the figure, 1, a bracket; 11. a base; 12. a column; 13. a cross beam; 2. a test cartridge; 21. a cylindrical section; 22. a tetragonal section; 23. sealing the cover plate; 3. a model ship anchor; 4. a boat anchor securing assembly; 41. a first support; 42. a pin shaft; 5. an anchor falling unlocking assembly; 51. a fixed part; 52. a lock section; 521. a first link; 522. a second link; 523. a pulling member; 6. a detection component; 61. a monitoring loop; 611. a magneto-resistor; 612. a reed switch; 62. an acquisition instrument.
Detailed Description
Example (b):
in order to better understand the utility model, the utility model is further described in the following by combining the specific embodiment and the attached drawings, and the utility model relates to a test device for researching the motion state of a ship anchor in water. As shown in fig. 1, the test device comprises a support 1, a test tube 2, a model ship anchor 3, a ship anchor fixing component 4, an anchor falling unlocking component 5 and a detection component 6, wherein the model ship anchor 3 is hung on the ship anchor fixing component 4 in a first state, the ship anchor enters the test tube 2 along the top of the test tube 2 to perform falling motion in a second state, the anchor falling unlocking component 5 is used for switching the model ship anchor 3 from the first state to the second state, and the detection component 6 is used for acquiring the motion track and the motion speed of the model ship anchor 3 in water. The clean water is filled in the test cylinder 2 in advance, the model ship anchor 3 is hung at the ship anchor fixing component 4 in the first state, the ship anchor fixing component 4 is opened by the anchor falling unlocking component 5 in the second state, so that the model ship anchor 3 does falling motion along the test cylinder 2, in the falling process of the model ship anchor 3, the detection component 6 captures the motion state of the model ship anchor 3 in water and calculates the motion speed, and parameters are provided for the subsequent submarine pipeline protection measure research through the acquisition of the motion state and the motion speed of the model ship anchor 3.
As shown in fig. 1 to 3, the detecting assembly 6 includes a plurality of monitoring rings 61 and a collecting instrument 62, wherein the monitoring rings 61 are disposed along the length direction of the test cartridge 2, and the distances between any two adjacent monitoring rings 61 are the same. During detection, the distances between the adjacent monitoring rings 61 are the same, so that the traveling distances of the model ship anchor 3 are the same during speed calculation, the calculation is simple and convenient, meanwhile, the installation consistency is good, and the working states of all parts of the monitoring rings 61 are kept good.
The monitoring ring 61 comprises a magnetic resistor 611 and a reed switch 612, the magnetic resistor 611 and the reed switch 612 are both fixed on the test tube 2, the magnetic resistor 611 is electrically connected with the acquisition instrument 62, the reed switch 612 is electrically connected with the acquisition instrument 62, the magnetic resistor 611 is used for measuring the magnitude of a magnetic field signal, and the reed switch 612 is used for measuring the on-off state of the signal. The model ship anchor 3 is magnetized before the test is started, the model ship anchor 3 falls into the test barrel 2 and then falls into the working areas of different monitoring rings 61 in sequence, when the model ship anchor 3 falls into the height position of one monitoring ring 61, the reed pipe 612 signal is disconnected under the action of a magnetic field, the signal of the monitoring point is lost, the height between different monitoring rings 61 can be determined in a measuring mode through the time interval of the loss of the reed pipe 612 signal on a plurality of monitoring rings 615, and the movement speed of the model ship anchor 3 passing through each monitoring ring 61 can be calculated. Through changing the quantity of monitoring ring 61, can improve measurement accuracy, the quantity of monitoring ring is more, the motion velocity that records is close to the speed of touching the bottom, because the fluke of model ship anchor 3 can rotate, consequently, the orbit of whereabouts is not vertical decurrent in aqueous, can take place the skew of certain degree, this just can measure the skew position of model anchor through a plurality of magneto resistor 611 that arrange on every monitoring ring 61, through the data that record on the different monitoring ring 61, can judge the model anchor at vertical motion orbit.
The magnetoresistors 611 in any one of the monitoring rings 61 are uniformly distributed along the circumferential direction of the test cylinder 2, and the reed switches 612 in any one of the monitoring rings 61 are uniformly distributed along the circumferential direction of the test cylinder 2. The magnetoresistors 611 and the reed switches 612 are arranged along the circumferential direction of the wall of the test cylinder 2 and are uniformly distributed, which is beneficial to maintaining the stability of the work.
As shown in fig. 4 and 5, the boat anchor fixing assembly 4 includes a first support 41 and a pin shaft 42, the first support 41 is fixedly connected to the support 1, and the pin shaft 42 penetrates through the first support 41. The anchor falling unlocking assembly 5 comprises a fixing portion 51 and a locking portion 52, the fixing portion 51 is fixedly connected with the support 1, and the locking portion 52 is matched with the fixing portion 51 to realize switching between a locking state and an unlocking state of the model ship anchor 3. The locking part 52 includes a first link 521, a second link 522 and a pulling member 523, one end of the first link 521 is rotatably connected to one end of the pin 42 penetrating through the first support 41, the other end of the first link 521 is rotatably connected to the second link 522, and the end of the second link 522 is fixed with the pulling member 523. The fixing portion 51 is a second support, the second link 522 is L-shaped, two ends of the second link 522 are respectively rotatably connected to the first link 521 and fixedly connected to the pulling member 523, and the middle of the second link 522 is rotatably connected to the second support.
Specifically, before the test is started, the magnetizing machine is used for magnetizing the anchor crown of the model ship anchor 3, the model ship anchor is assembled after being magnetized, then the model ship anchor is hung on the pin shaft 42 of the ship anchor fixing component 4, when the test is carried out, clear water is added into the test cylinder 2, then the pulling part 523 is pulled, the pulling part 523 drives the second connecting rod 522 to rotate around the second support, the second connecting rod drives the first connecting rod 521 to rotate, the pin shaft 42 is pulled to be separated from the first support 41 while the first connecting rod 521 rotates, then the model ship anchor 3 falls into the test cylinder 2 from the pin shaft 42 up and down, the falling body movement is carried out, and the running track and the running speed of the model ship anchor 3 are further calculated.
As shown in fig. 1, the support 1 includes a base 11, a column 12 and a beam 13, the base 11 is fixed with the column 12, the column 12 is fixed with the beam 13, the beam 13 is fixed with a first support 41 and a second support, the base 11 is a C-shaped opening structure, and the test cartridge 2 is arranged in the C-shaped opening. The C-shaped open arrangement of the base 11 allows the test cartridge 2 to be received therein, which saves space and because of the height of the upright 12, the base 11 being arranged at the bottom maintains the stability of the entire rack 1. The upright post 12 has a telescopic structure, adjusts the height of the bracket 1, is matched with different water depths, and can complete tests of different drop distances and water depths.
The test cylinder 2 comprises a cylindrical section 21 and a tetragonal section 22, the cylindrical section 21 is communicated with the tetragonal section 22, and a sealing cover plate 23 is detachably connected to the tetragonal section 22. The cylindrical section 21 and the tetragonal section 22 are fixedly connected and communicated with each other, and a plurality of model ship anchors 3 fall into the tetragonal section 22 for storage after being tested, and the tetragonal section 22 is opened through the sealing cover plate 23, and the plurality of model ship anchors 3 are taken out.
Experimental example:
the method comprises the following steps: installing the sealing cover plate 23 of the tetragonal section 22 of the test cylinder 2 in place to ensure good sealing performance, and filling clear water to a use elevation according to design requirements; specifically, the total height of the test cartridge 2 was 4300 mm. Wherein, the size of the cylinder segment is phi 500 x 4000mm, the wall thickness is 20mm, the size of the tetragonal segment 22 is 500 x 300mm, the wall thickness is 20mm, and the tetragonal segment is made of acrylic transparent material;
step two: adjusting the height of the bracket 1 according to the test requirement; the support 1 is formed by welding I-shaped steel, and a monitoring ring 61 is arranged on the cylindrical section of the test cylinder 2 at intervals of 400 mm. 8 magnetoresistors 611 are designed in each monitoring ring 61, and the distance between the magnetoresistors is 45 degrees. 4 reed pipes 612 are designed on each monitoring ring 61, and the distance between every two reed pipes is 90 degrees;
step three: magnetizing an anchor crown of the model ship anchor 3 by using a magnetizing machine, assembling after magnetizing, and then hanging on a pin shaft 42 of the ship anchor fixing component 4, wherein the model ship anchor 3 can be selected from a Hall anchor, a plate anchor and the like;
step four: connecting all the magnetoresistors 611 and the reed pipes 612 on the monitoring ring 61 to the acquisition instrument 62, and opening the acquisition instrument 62 to start data acquisition;
step five: pulling the pulling piece 523 to make the model ship anchor 3 fall into the test cylinder 2 and fall freely in water; in this example, the pulling member 523 may be selected as a pulling string.
Step six: and (4) draining the test cylinder 2, taking out the model ship anchor 3, repeating the second step to the fifth step, and if the number of the model ship anchors 3 is large, opening the sealing cover plate 23 to take out the anchor after completing a plurality of groups of tests.
Specifically, in step four and step five, the principle of measuring the speed is as follows:
the reed pipe 612 is used for measuring the on-off of signals, namely when the model anchor falls to the height of the monitoring ring 61, the signals of the reed pipe 612 are disconnected due to the action of a magnetic field, the signals of the monitoring point are lost, and the speed of the model ship anchor 3 passing through each monitoring ring 61 can be calculated through the time interval of the loss of the signals of the reed pipe 612 on a plurality of monitoring rings 61;
as shown in fig. 6, the experiment with the water surface as the starting point was calculated to obtain:
average speed of stage 1
；
Average speed of stage 2
；
……
Average speed of nth stage
。
Finally, the velocity data of the model ship anchor 3 in the present test is described in the graph of fig. 7 in which the horizontal axis represents the height value and the vertical axis represents the velocity value.
In the fourth step and the fifth step, the principle of measuring the motion trail is as follows:
the position of the model ship anchor 3 passing through the monitoring ring 61 is determined by the signal strength of 8 magnetoresistors 611 in each ring, the positions of a plurality of rings are connected in space, namely the motion track of the ship anchor in water is shown in figure 8,
the technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (9)
1. The test device for researching the motion state of the ship anchor in water is characterized by comprising a support (1), a test cylinder (2), a model ship anchor (3), a ship anchor fixing component (4), an anchor falling unlocking component (5) and a detection component (6), wherein the model ship anchor (3) is hung on the ship anchor fixing component (4) in a first state, the model ship anchor (3) enters the test cylinder (2) along the top of the test cylinder (2) in a second state to do falling motion, the anchor falling unlocking component (5) is used for switching the model ship anchor (3) from the first state to the second state, the detection component (6) comprises a monitoring ring (61) and a collecting instrument (62) which are used for acquiring the motion track and the motion speed of the model ship anchor (3) in water, the monitoring ring (61) is arranged in a plurality along the length direction of the test cylinder (2), the monitoring loop (61) includes a magneto resistor (611) and a reed switch (612).
2. The test device for researching the motion state of the ship anchor in water according to claim 1, wherein the magnetic sensing resistor (611) and the reed pipe (612) are both fixed on the test cylinder (2), the magnetic sensing resistor (611) is electrically connected with the acquisition instrument (62), the reed pipe (612) is electrically connected with the acquisition instrument (62), the magnetic sensing resistor (611) is used for measuring the magnitude of a magnetic field signal, and the reed pipe (612) is used for measuring the on-off of the signal.
3. A test device for studying the motion state of a ship anchor in water as claimed in claim 2, wherein the magnetoresistors (611) in any one of the monitoring rings (61) are uniformly distributed along the circumference of the test cylinder (2), and the reed switches (612) in any one of the monitoring rings (61) are uniformly distributed along the circumference of the test cylinder (2).
4. The test device for researching the motion state of the ship anchor in water according to claim 1, wherein the ship anchor fixing component (4) comprises a first support (41) and a pin shaft (42), the first support (41) is fixedly connected with the bracket (1), and the pin shaft (42) penetrates through the first support (41).
5. The test device for researching the motion state of the ship anchor in water according to claim 4, wherein the anchor falling unlocking assembly (5) comprises a fixing part (51) and a locking part (52), the fixing part (51) is fixedly connected with the bracket (1), and the locking part (52) is matched with the fixing part (51) to realize the switching between the locking state and the unlocking state of the model ship anchor (3).
6. The test device for researching the motion state of the ship anchor in water according to claim 5, wherein the locking part (52) comprises a first connecting rod (521), a second connecting rod (522) and a pulling piece (523), one end of the first connecting rod (521) is rotatably connected with one end of the pin shaft (42) penetrating out of the first support (41), the other end of the first connecting rod (521) is rotatably connected with the second connecting rod (522), and the pulling piece (523) is fixed at the end part of the second connecting rod (522).
7. The test device for researching the motion state of the ship anchor in water as claimed in claim 6, wherein the fixing portion (51) is a second support, the second connecting rod (522) is L-shaped, two ends of the second connecting rod (522) are respectively connected with the first connecting rod (521) in a rotating manner and fixedly connected with the pulling member (523), and the second support is connected with the middle of the second connecting rod (522) in a rotating manner.
8. The test device for researching the motion state of the ship anchor in water according to claim 1 is characterized in that the support (1) comprises a base (11), a stand column (12) and a cross beam (13), the stand column (12) is fixed on the base (11), the cross beam (13) is fixed on the stand column (12), the base (11) is of a C-shaped opening structure, and the test cylinder (2) is arranged inside the C-shaped opening.
9. Test rig for studying the state of motion of a ship anchor in water according to claim 1, characterised in that the test cylinder (2) comprises a cylindrical section (21) and a tetragonal section (22), the cylindrical section (21) and the tetragonal section (22) being in communication with each other, the tetragonal section (22) being detachably connected with a sealing cover plate (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220888180.1U CN216559704U (en) | 2022-04-18 | 2022-04-18 | Test device for researching motion state of ship anchor in water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220888180.1U CN216559704U (en) | 2022-04-18 | 2022-04-18 | Test device for researching motion state of ship anchor in water |
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| Publication Number | Publication Date |
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| CN216559704U true CN216559704U (en) | 2022-05-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220888180.1U Active CN216559704U (en) | 2022-04-18 | 2022-04-18 | Test device for researching motion state of ship anchor in water |
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| CN (1) | CN216559704U (en) |
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- 2022-04-18 CN CN202220888180.1U patent/CN216559704U/en active Active
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