CN108945306B - Assembled improved torpedo anchor - Google Patents
Assembled improved torpedo anchor Download PDFInfo
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- CN108945306B CN108945306B CN201811035770.4A CN201811035770A CN108945306B CN 108945306 B CN108945306 B CN 108945306B CN 201811035770 A CN201811035770 A CN 201811035770A CN 108945306 B CN108945306 B CN 108945306B
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- 241000251468 Actinopterygii Species 0.000 claims abstract description 28
- 239000002184 metal Substances 0.000 claims description 43
- 229910052751 metal Inorganic materials 0.000 claims description 43
- 230000000149 penetrating effect Effects 0.000 claims description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000011084 recovery Methods 0.000 abstract description 7
- 238000005457 optimization Methods 0.000 abstract description 3
- 239000012530 fluid Substances 0.000 abstract description 2
- 230000009471 action Effects 0.000 description 7
- 238000004364 calculation method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000004873 anchoring Methods 0.000 description 3
- 230000004075 alteration Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/24—Anchors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/24—Anchors
- B63B21/26—Anchors securing to bed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B21/00—Tying-up; Shifting, towing, or pushing equipment; Anchoring
- B63B21/24—Anchors
- B63B21/48—Sea-anchors; Drogues
Abstract
The invention provides an assembled improved fish anchor. The anchor head comprises an anchor head body unit, a loading ring I and a loading ring II. And a plurality of anchor wings I and II, which can realize modularized and standardized production and reduce the production and manufacturing cost, in particular the transportation cost on land and sea. The position of the working anchor hole can be adjusted along the length direction of the anchor body, and the working anchor hole can freely rotate along the circumferential direction of the anchor body, so that the optimization of the drawing bearing capacity can be realized. The length and the weight of the anchor body can be adjusted as required, thereby meeting the requirements of bearing capacity of various ocean platforms under various complicated ocean geological conditions. Meanwhile, the anchor wing pieces can be installed according to the requirements, so that the requirement of fluid stability of vertical installation of the anchor body under different ocean current conditions is met. The invention is provided with the anchor holes at the tail part of the anchor besides the working anchor holes, thereby being convenient for the vertical installation of the anchor and optimizing the recovery of the anchor. The invention has the characteristics of high universality and high recoverability, fully utilizes resources and reduces the production and use costs.
Description
Technical Field
The invention relates to an ocean deepwater anchor foundation.
Background
With the rapid development of Chinese economy, the consumption of oil and gas resources is rapidly increasing, and the exploitation of petroleum and natural gas is gradually going from shallow sea to deep sea. The exploitation of ocean deepwater oil and gas resources has high requirements on an oil platform and a platform anchoring foundation. For reasons of cost and efficiency, most deep water mooring systems employ tension or semi-tension mooring (tart-leg or semi-tart leg mooring) rather than conventional catenary mooring. Unlike catenary mooring, tension or semi-tension mooring requires a greater diagonal resistance to pullout (i.e., a greater vertical and horizontal resistance to pullout load component) of the anchor foundation. The deep water anchor foundation widely applied at present mainly comprises a suction anchor, a normal bearing anchor, a suction penetrating plate anchor, a vibration deep buried anchor, a power penetrating anchor and the like. The torpedo anchor is a newly developed deep sea anchor foundation form, has the outstanding characteristics of low cost, simple and efficient installation, good anchoring performance and the like, and the installation stage of the torpedo anchor is completed only by dead weight without external force, so that the defect that the installation cost of the traditional anchor foundation is seriously dependent on water depth is overcome, and the torpedo anchor foundation is the deep sea anchor foundation with the most development prospect at present.
Although fish anchors have many of the above characteristics, the prior art has many disadvantages:
1) Existing torpedo anchors are typically manufactured in a factory and then transported to the field for installation. Because the anchor body is large (the anchor body is about 12-17 m long and the diameter is about 0.5-1.2 m), the land and sea transportation costs are high.
2) The existing fish-type anchor only has a single anchor hole, the position of the anchor hole is fixed and not adjustable (in order to facilitate the installation and recovery of the anchor, the anchor hole is usually positioned at the tail end of the anchor and far away from the center of the anchor body, so that the drawing bearing capacity of the anchor body obtained in the drawing working stage is not an optimal value).
3) The weight and the size of the existing fish anchor are designed and determined in advance according to the geological conditions of the applied sea area and the bearing capacity requirement of the anchored ocean platform. When the application conditions change greatly, the torpedo anchor needs to be redesigned and manufactured, so that the universality is not strong enough, and the resource waste is easy to cause.
Disclosure of Invention
The invention aims to provide an assembled improved torpedo anchor which is characterized by mainly comprising an anchor head, a plurality of anchor body units, a metal ring I, a metal ring II, a tail end connecting part, a plurality of anchor wings I and a plurality of anchor wings II.
The lower end of the anchor head is a tip, and the upper end of the anchor head is provided with a rod body with a diameter smaller than that of the main body part; the upper part of the rod body is a threaded part, and the lower part of the rod body is a cylinder without threads.
The upper end of the anchor body unit is provided with a rod body with a diameter smaller than that of the main body part. The upper part of the rod body is a threaded part, and the lower part of the rod body is a cylinder without threads. The side wall of the anchor body unit is provided with a plurality of strip-shaped clamping grooves. The lower end of each strip-shaped clamping groove penetrates through the lower end face of the anchor body unit. The upper end of each strip-shaped clamping groove does not penetrate through the upper end face of the anchor body unit. The lower end face of the anchor body unit is provided with a threaded hole.
The anchor body units are connected end to end through threads. The metal ring I comprises a ring body and lugs on the outer side wall of the ring body. The ring body is sleeved on the cylinder of one of the anchor body units.
The lower end of the tail end connecting part is provided with a connecting hole, and the upper end of the tail end connecting part is provided with a metal block. The metal block is provided with an anchor hole. The connecting hole is internally provided with threads.
The screw rod of the anchor head is screwed into the threaded hole of the anchor body unit at the lowest end.
The threaded part of the uppermost anchor body unit is screwed into the connecting hole of the tail end connecting part. The cylinder of the uppermost anchor unit also dips into the connecting hole.
The metal ring I can rotate freely.
The anchor chain I is sleeved on the anchor hole I. The anchor chain II is sleeved in the anchor hole II on the supporting lugs.
Further, the anchor units above the metal ring I are inserted into the anchor tabs, while the anchor units below the metal ring I are not inserted into the anchor tabs. The anchor tab II is inserted into the bar-shaped slot of the anchor unit immediately above the metal ring I. The wing part of the anchor wing II is a right trapezoid, and one side of the wing is a protruding falcon matched with the strip-shaped clamping groove.
Except for the anchor unit immediately above the metal ring I, the anchor tab I is inserted into the bar-shaped clamping groove of the rest of the anchor units. The fin part of the anchor fin I is rectangular, and one side of the fin is provided with a protruding falcon matched with the strip-shaped clamping groove.
Further, except the uppermost anchor body unit and the anchor body unit sleeved with the metal ring I, the cylinders of the rest anchor body units and the cylinders of the anchor head are sleeved with the metal ring II.
Further, the anchor body units are not connected through threads, and are connected through threaded bolts. The upper end of the anchor body unit is provided with a connecting cylinder. The connecting cylinder is provided with through holes penetrating through two sides of the connecting cylinder. The lower end of the anchor body unit is provided with a connecting hole. The anchor body unit has a pair of through holes penetrating through both sides thereof. The pair of through holes is intersected with the connecting hole.
When in connection, the connecting cylinder of one anchor unit is inserted into the connecting hole of the other anchor unit. The opposite through bolts penetrate through the opposite through holes and the through holes and are connected with the two anchor body units.
Further, the strip-shaped clamping groove is a dovetail groove, a T-shaped groove or an I-shaped groove.
Further, the main body of the anchor body unit is a cylinder, and the inside of the main body is a cavity. And lead powder, iron powder or fine sand is filled in the cavity to adjust the weight of the anchor body.
Further, the tip shape of the anchor head is cone, pyramid, oval or truncated oval.
It is worth to be noted that, compared with the prior art, the assembled improved fish-mine anchor has anchor bodies and anchor wings which can be assembled; the length and the weight of the anchor can be adjusted as required; the bearing capacity optimization device has the characteristics that the position and the direction of one of the two anchor holes are adjustable so as to obtain the bearing capacity optimization value. The beneficial effects of the invention are as follows:
1. the invention improves the existing integral fish mine anchor into an assembled fish mine anchor, can realize modularized and standardized production, and reduces the production and manufacturing cost, in particular to the transportation cost on land and at sea.
2. The invention relates to an assembled improved fish anchor, wherein the position of a working anchor hole (anchor hole II) of the assembled improved fish anchor can be adjusted along the length direction of an anchor body. Because the drawing bearing capacity of the fish anchor and the distance between the working anchor hole and the mass center of the anchor body are in negative correlation, the drawing bearing capacity can be optimized by adjusting the position of the working anchor hole to be as close to the mass center as possible.
3. The invention relates to an assembled improved fish anchor, wherein a working anchor hole of the assembled improved fish anchor can freely rotate along the circumferential direction of an anchor body, so that adverse effects caused by out-of-plane drawing loads are effectively avoided.
4. The invention relates to an assembled improved torpedo anchor, the length of the anchor body and the weight of the anchor body can be adjusted according to the requirement, thereby meeting the requirements of bearing capacity of various ocean platforms under various complex ocean geological conditions and overcoming the defects of poor universality and easy waste of resources of the traditional integral torpedo anchor.
5. The invention relates to an assembled improved fish anchor, wherein anchor wings can be installed according to requirements, so that the requirement of fluid stability of vertical installation of anchors under different ocean currents is met.
6. The invention relates to an assembled improved fish-mine anchor, which is provided with an installing anchor hole (anchor hole I) at the tail part of the anchor besides a working anchor hole, so that the vertical installation of the anchor is convenient, the recovery of the anchor is optimized (the recovery is implemented through the anchor hole at the tail end of the anchor, and the resistance is minimum).
7. The invention relates to an assembled improved fish anchor, which has the characteristics of high universality and recoverability, fully utilizes resources and reduces the production and use costs.
Drawings
FIG. 1 is a schematic view of a conventional monolithic fish anchor;
FIG. 2 is a schematic diagram of a conventional integral fish anchor II;
FIG. 3 is a schematic view of a fish anchor of the present invention;
FIG. 4 is a schematic view of an anchor unit of the present invention;
FIG. 5 is a schematic view of an anchor tab;
FIG. 6 is a schematic illustration of the attachment of the anchor tab to the anchor body unit; namely, the A-A, B-B, C-C cross-sectional views, and the D-D view of the anchor unit of fig. 4, wherein: A-A is a cross-sectional view with a bar-shaped slot (insert tab), B-B is a cross-sectional view with a bar-shaped slot (not insert tab), C-C is a cross-sectional view where the top is not slotted; D-D is a lower end projection view;
FIG. 7 is a schematic view of the anchor unit connection of example 1;
FIG. 8 is a schematic view of the anchor unit connection of example 2;
FIG. 9 is a schematic view of a trailing end connection;
FIG. 10 is a schematic view of a metal ring I;
FIG. 11 is a schematic view of metal ring II;
FIG. 12 is a schematic view of a different shaped anchor head (conical, oval, pyramidal, truncated oval in order from left to right);
FIG. 13 is a schematic view of the load ring I position of the present invention;
FIG. 14 is a schematic diagram of a fish-anchor finite element model;
FIG. 15 is a graph of the CEL method for calculating the load bearing capacity of a load ring at different anchor positions;
fig. 16 is a schematic installation view of the present invention.
In the figure: the anchor comprises an anchor head (1), a screw rod (101), an anchor body unit (2), a strip-shaped clamping groove (201), a threaded part (202), a cylinder (203), a threaded hole (205), a connecting hole (206), a pair of through holes (2061), a connecting cylinder (207), a through hole (2071) and a pair of through bolts (22); anchor chain I (4), working anchor chain II (5), metal ring I (6), ring body (601), support lugs (602), anchor hole II (6021), metal ring II (7), tail end connecting part (8), anchor hole I (801), connecting hole (802), anchor wing I (9), anchor wing II (10), assembled improved fish anchor (100), ship (200) and seabed plane (300).
Detailed Description
The present invention is further described below with reference to examples, but it should not be construed that the scope of the above subject matter of the present invention is limited to the following examples. Various substitutions and alterations are made according to the ordinary skill and familiar means of the art without departing from the technical spirit of the invention, and all such substitutions and alterations are intended to be included in the scope of the invention.
Example 1:
the assembled improved fish mine anchor 100 is characterized by mainly comprising an anchor head 1, a plurality of anchor body units 2, a metal ring I6, a tail end connecting part 8, a plurality of anchor wings I9 and a plurality of anchor wings II10.
The lower end of the anchor head 1 is a tip, and the upper end of the anchor head is provided with a rod body with a diameter smaller than that of the main body part; the upper part of the rod body is a threaded part 101 and the lower part is a cylinder 102 without threads. The tip of the anchor head 1 is shaped as a cone, pyramid, oval or truncated oval.
The main body part of the anchor body unit 2 is a cylinder, and the inside of the main body part is a cavity. The upper end of the anchor body unit 2 has a rod body having a smaller diameter than the main body portion. The upper part of the rod body is a threaded part 202 and the lower part is a cylinder 203 without threads. The side wall of the anchor body unit 2 is provided with a plurality of strip-shaped clamping grooves 201. The notch of the lower end of each bar-shaped clamping groove 201 is arranged on the lower end face of the anchor body unit 2. The upper end of each bar-shaped clamping groove 201 does not penetrate through the upper end face of the anchor body unit 2. The lower end face of the anchor body unit 2 is provided with a threaded hole.
The anchor body units 2 are connected end to end through threads. The metal ring I6 includes a ring body 601 and lugs 602 on the outer side wall of the ring body 601. The ring body 601 is sleeved on the cylinder 203 of one of the anchor units 2. The anchor unit 2 above the metal ring I6 is inserted into the anchor tab, and the anchor tab is not inserted below the metal ring I6. The bar-shaped clamping groove 201 is a dovetail groove, a T-shaped groove or an I-shaped groove.
The tail end connecting part 8 has a connecting hole 802 at the lower end and a metal block at the upper end. The metal block is provided with an anchor hole I801. The connection hole 802 has threads therein.
The upper threaded portion 101 of the shank of the anchor head 1 is screwed into the threaded hole 205 of the lowermost anchor body unit 2.
The threaded portion 202 of the uppermost anchor unit 2 is screwed into the coupling hole 802 of the trailing-end coupling portion 8. The cylinder 203 of the uppermost anchor unit 2 is also sunk into the connection hole 802.
The anchor tab II10 is inserted into the bar-shaped clamping groove 201 of the anchor body unit 2 above the metal ring I6. The fin part of the anchor fin II10 is in a right trapezoid shape, and one side of the fin is a protruding falcon matched with the strip-shaped clamping groove 201.
The anchor tab I9 is inserted into the bar-shaped catching groove 201 of the rest of the anchor units 2 except for the anchor unit 2 above the metal ring I6. The fin portion of the anchor fin I9 is rectangular, and one side of the fin is a tongue engaged with the bar-shaped slot 201.
The metal ring I6 can rotate freely.
The anchor chain I4 is sleeved on the anchor hole I801. The anchor chain II5 is sleeved in an anchor hole II6021 on the support lug 602.
Except for the uppermost anchor unit 2 and the anchor unit 2 sleeved with the metal ring I6, the cylinder 203 of the rest anchor unit 2 and the cylinder 102 of the anchor head 1 are sleeved with the metal ring II7.
Example 2:
the main structure of this embodiment is the same as that of embodiment 1, except that another connection method is adopted. I.e. the anchor units 2 are connected by means of a split bolt 22 instead of a threaded connection. The upper end of the anchor unit 2 has a connecting cylinder 207. The connecting cylinder 207 has a through hole 2071 penetrating both sides thereof. The lower end of the anchor unit 2 has a connection hole 206. The anchor unit 2 has a pair of through holes 2061 penetrating both sides thereof. The pair of through holes 2061 communicate with the connection hole 206.
When connected, the connecting cylinder 207 of one anchor unit 2 is inserted into the connecting hole 206 of the other anchor unit 2. The pair of through bolts 22 pass through the pair of through holes 2061 and the through hole 2071 to connect the two anchor units 2.
Example 3:
a schematic of the use of the fabricated improved fish anchor 100 of the present invention is shown in fig. 16. The anchor chain is divided into an anchor chain I4 and an anchor chain II5, and the anchor chain I4 and the anchor chain II5 are respectively connected with the metal ring I6 and the tail end connecting part 8. During installation, the torpedo anchor is suspended to a designed height through the anchor chain I4 and is released to freely and vertically fall into water, the assembled improved torpedo anchor 100 penetrates into the soil of the seabed plane 300 under the action of self weight and kinetic energy obtained by free falling in water, and finally the torpedo installation process is completed. After the installation is finished, the torpedo anchor immediately enters a working stage. At this time, the ocean platform is connected with an anchor hole II6021 on the torpedo anchor metal ring I6 through an anchor chain II 5. To achieve optimal load bearing capacity, the metal ring I6 is as close to the mass center of the anchor body as possible. When the work of the improved torpedo anchor 100 is finished, the working anchor chain II5 is loosened, and the torpedo anchor is pulled out for recovery by using the anchor chain I4.
And (3) testing:
referring to fig. 13 and 14, a fish anchor 100 is modified using an (aerofoil-less) assembly as in the embodiment. The total length of the anchor body is L, the anchor body is formed by connecting five anchor body units 2, the connection positions of the five anchor body units 2 are respectively marked as B, C, D, E points from top to bottom, the top of the uppermost anchor body unit 2 is connected with the tail end connecting part 8, the anchor hole I is marked as A point, and the connection position of the lowermost anchor body unit 2 and the anchor head 1 is marked as F point. The metal ring I6 can be positioned at points B-F, namely, the metal ring I6 can be close to 1/5 (point B), 2/5 (point C), 3/5 (point D) and 4/5 (point E) of the anchor body and the lower end position (point F) of the anchor body.
In order to verify the fabricated improved fish-mine anchor 100 according to the present embodiment, a coupled euler-lagrangian (Coupled Eulerian Lagrangian, abbreviated as CEL) large-deformation finite element computing tool in ABAQUS finite element software is used to perform simulation computation, and it is verified that the improved fish-mine anchor 100 has an improved drawing bearing capacity compared with the conventional integral fish-mine anchor. Six finite element models are established by adopting ABAQUS software, the drawing action points of the six finite element models are respectively positioned at the points A to F (shown in figure 14), and the finite element model with the drawing action point positioned at the point A corresponds to the traditional integral fish anchor.
For the six finite element models, CEL calculations were performed under equivalent conditions for comparative analysis. The calculation is detailed in Table 1. Fig. 15 is a graph of torpedo anchor displacement versus bearing capacity with the pullout points of action at a-F, respectively. The numerical simulation calculation results show that: when the drawing action point is positioned at the point A at the tail end of the anchor (namely the position of a drawing anchor hole of the traditional integral fish-mine anchor), the drawing bearing capacity of the fish-mine anchor is 1622KN. And when the drawing action points are positioned at the positions of the anchor bodies B-F, the drawing bearing forces of the torpedo anchors are 1920KN, 2560KN, 3678KN, 2574KN and 1970KN respectively. The calculation result shows that: when the drawing action point is positioned at the point D close to the mass center of the anchor body, the obtained drawing bearing capacity is the highest and is 3678KN. The drawing bearing capacity of the drawing device is 127% higher than that of the drawing device at the point A. In other words, under the condition that the weight and the size of the anchors are consistent, the assembly type improved fish mine anchor can be improved by about 127% compared with the traditional integral fish mine anchor in the working stage. This improvement can be even higher, considering that the anchoring weight and size of the assembled improved fish anchor can also be adjusted. In the recovery stage, the assembled improved torpedo anchor adopts a double-anchor hole design, and the recovery resistance is consistent with that of the traditional integral torpedo anchor.
Table 1: CEL calculation parameter list
Claims (4)
1. The assembled improved fish mine anchor is characterized in that the assembled improved fish mine anchor (100) comprises an anchor head (1), a plurality of anchor body units (2), a metal ring I (6), a tail end connecting part (8), a plurality of anchor wings I (9) and a plurality of anchor wings II (10);
the lower end of the anchor head (1) is a tip, and the upper end of the anchor head is provided with a rod body with the diameter smaller than that of the main body part; the upper part of the rod body is a threaded part (202) and the lower part of the rod body is a cylinder (102) without threads;
the upper end of the anchor body unit (2) is provided with a rod body with the diameter smaller than that of the main body part; the upper part of the rod body is a threaded part (202) and the lower part of the rod body is a cylinder (203) without threads; the side wall of the anchor body unit (2) is provided with a plurality of strip-shaped clamping grooves (201); the lower end of each strip-shaped clamping groove (201) penetrates through the lower end face of the anchor body unit (2); the upper end of each strip-shaped clamping groove (201) does not penetrate through the upper end face of the anchor body unit (2); the lower end face of the anchor body unit (2) is provided with a threaded hole (205);
the anchor body units (2) are connected end to end through threads; the metal ring I (6) comprises a ring body (601) and lugs (602) on the outer side wall of the ring body (601); the ring body (601) is sleeved on the cylinder (203) of one anchor body unit (2); the anchor body units (2) above the metal ring I (6) are inserted into the anchor wing pieces, and the anchor wing pieces are not inserted below the metal ring I (6); the anchor wing piece II (10) is inserted into the strip-shaped clamping groove (201) of the anchor body unit (2) above the adjacent metal ring I (6); the wing part of the anchor wing II (10) is in a right trapezoid shape, and one side of the wing is provided with a protruding falcon matched with the strip-shaped clamping groove (201);
the anchor body units (2) are connected by adopting a through bolt (22); the upper end of the anchor body unit (2) is provided with a connecting cylinder (207); the connecting cylinder (207) is provided with through holes (2071) penetrating through two sides of the connecting cylinder; the lower end of the anchor body unit (2) is provided with a connecting hole (206); the anchor body unit (2) has a pair of through holes (2061) penetrating both sides thereof; the pair of through holes (2061) is communicated with the connecting hole (206);
when in connection, the connecting cylinder (207) of one anchor body unit (2) is inserted into the connecting hole (206) of the other anchor body unit (2); the opposite through bolt (22) passes through the opposite through hole (2061) and the through hole (2071) and is connected with the two anchor body units (2);
except for the anchor body unit (2) above the adjacent metal ring I (6), inserting the anchor wing I (9) into the strip-shaped clamping grooves (201) of the rest anchor body units (2); the fin part of the anchor fin I (9) is rectangular, and one side of the fin is a tennons which is matched with the strip-shaped clamping groove (201); the strip-shaped clamping groove (201) is a dovetail groove, a T-shaped groove or an I-shaped groove;
the lower end of the tail end connecting part (8) is provided with a connecting hole (802), and the upper end of the tail end connecting part is provided with a metal block; the metal block is provided with an anchor hole I (801); the connecting hole (802) is internally provided with threads;
the screw rod (101) of the anchor head (1) is screwed into the threaded hole (205) of the anchor body unit (2) at the lowest end;
the thread part (202) of the uppermost anchor body unit (2) is screwed into the connecting hole (802) of the tail end connecting part (8); the cylinder (203) of the uppermost anchor unit (2) also dips into the connecting hole (802);
the metal ring I (6) can freely rotate;
the anchor chain I (4) is sleeved on the anchor hole I (801); the anchor chain II (5) is sleeved in an anchor hole II (6021) on the support lug (602).
2. A fabricated modified fish anchor as claimed in claim 1, wherein: except the uppermost anchor body unit (2) and the anchor body unit (2) sleeved with the metal ring I (6), the cylinder (203) of the rest anchor body units (2) and the cylinder (102) of the anchor head (1) are sleeved with the metal ring II (7).
3. A fabricated modified fish anchor as claimed in claim 1 or claim 2, wherein: the main body part of the anchor body unit (2) is a cylinder, and the inside of the main body part is a cavity; and lead powder, iron powder or fine sand is filled in the cavity.
4. A fabricated modified fish anchor as claimed in claim 1 or claim 2, wherein: the tip shape of the anchor head (1) is conical, pyramid, oval or truncated oval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811035770.4A CN108945306B (en) | 2018-09-06 | 2018-09-06 | Assembled improved torpedo anchor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811035770.4A CN108945306B (en) | 2018-09-06 | 2018-09-06 | Assembled improved torpedo anchor |
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| Publication Number | Publication Date |
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| CN108945306A CN108945306A (en) | 2018-12-07 |
| CN108945306B true CN108945306B (en) | 2024-03-26 |
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| CN201811035770.4A Active CN108945306B (en) | 2018-09-06 | 2018-09-06 | Assembled improved torpedo anchor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112078728B (en) * | 2020-09-14 | 2021-07-06 | 大连理工大学 | Novel torpedo anchor based on bionics and construction method thereof |
| CN115245139B (en) * | 2021-11-23 | 2023-08-01 | 浙江海洋大学 | Pile anchor for marine culture facilities |
| CN114435539B (en) * | 2022-01-25 | 2023-02-24 | 南京林业大学 | Device and method for driving torpedo anchor by spiral dumping |
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|---|---|---|---|---|
| GB217161A (en) * | 1924-02-29 | 1924-06-12 | Arthur Bellingham | Improvements in or relating to anchors |
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