CN109501961B - Sectional slideway connecting mast based on special-shaped reinforcing structure - Google Patents
Sectional slideway connecting mast based on special-shaped reinforcing structure Download PDFInfo
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- CN109501961B CN109501961B CN201811491921.7A CN201811491921A CN109501961B CN 109501961 B CN109501961 B CN 109501961B CN 201811491921 A CN201811491921 A CN 201811491921A CN 109501961 B CN109501961 B CN 109501961B
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- Prior art keywords
- mast
- rod piece
- plate
- horizontal cover
- cover plate
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B15/00—Superstructures, deckhouses, wheelhouses or the like; Arrangements or adaptations of masts or spars, e.g. bowsprits
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B15/00—Superstructures, deckhouses, wheelhouses or the like; Arrangements or adaptations of masts or spars, e.g. bowsprits
- B63B2015/0016—Masts characterized by mast configuration or construction
Abstract
The invention discloses a sectional slideway connecting mast based on a special-shaped reinforcing structure, which comprises a first mast rod piece positioned at the upper part, a second mast rod piece sleeved on the periphery of the lower part of the first mast rod piece through a first slideway, and a third mast rod piece sleeved on the periphery of the lower part of the second mast rod piece through a second slideway, wherein the first mast rod piece, the second mast rod piece and the third mast rod piece are rectangular hollow rods; two vertex angles at the top end of the third mast rod piece are both horizontally connected with a horizontal cover plate outwards away from the axial direction of the third mast rod piece, and the two vertex angles are two vertex angles close to the inner curved surface of the sail; the outer edge of the horizontal cover plate is connected with an inclined outer plate in an inclined and downward manner; the two sides of the horizontal cover plate and the two sides of the inclined outer plate are respectively connected through a transition plate; the invention increases the structural strength of the mast high stress area on the premise of ensuring that the weight of the control mast is increased at least and the requirement of no barrier in the connection of three sections of mast body rods is met.
Description
Technical Field
The invention relates to the technical field of sail ship construction, in particular to a segmented slide connecting mast based on a special-shaped reinforcing structure.
Background
The application of a steel airfoil sail to a sail vessel is an innovative project, and the sail mast of the steel airfoil sail adopts a telescopic cantilever structure similar to a crane. As shown in fig. 1, the mast in the prior art is divided into three parts from top to bottom, which are a first mast member 1 located at the upper part, a second mast member 2 sleeved on the periphery of the lower part of the first mast member 1 through a first slideway 4, and a third mast member 3 sleeved on the periphery of the lower part of the second mast member 1 through a second slideway 5;
when the mast is lifted, the connecting points between the three sections of mast rods can be mutually extruded under the action of transverse wind load or inertia force, the top end parts of the lapping positions of the slideways between the three sections of mast rods bear larger force, the end cover plates at the corners of the mast are extruded most seriously, and the strength can not meet the specification requirement easily. The cross-sectional dimension of the mast is enlarged, the plate thickness is simply increased or other high-strength materials are used instead, and the requirements of design, weight, welding process and the like cannot be met. Experiments show that simply increasing the sheet thickness has little effect on high stress areas. Therefore, how to design the structural form of the end of the sail mast and realize the structural strength of the high stress part between the masts becomes a great importance.
Disclosure of Invention
The invention aims to solve the problem of high stress concentration at the end connection of a sail mast.
In order to achieve the above object, the present invention provides a segmented slide connecting mast based on a special-shaped reinforced structure, including a mast for supporting a wind sail formed by an inner curved surface (or an inner curved surface of a crescent, obviously, the inner curved surface refers to the curved surface with smaller curvature) and an outer curved surface and presenting a crescent shape, the mast being divided into three parts from top to bottom, namely, a first mast rod at the upper part, a second mast rod sleeved on the periphery of the lower part of the first mast rod through a first slide (the periphery means that the first mast rod is sleeved inside the second mast rod), and a third mast rod sleeved on the periphery of the lower part of the second mast rod through a second slide, wherein the first mast rod, the second mast rod and the third mast rod are rectangular hollow rods, and the first mast rod, the second mast rod and the third mast rod are characterized in that:
two top angles at the top end of the third mast member (the top angles correspond to the top angles of the rectangle of the rectangular hollow rod mentioned above) are both horizontally connected with a horizontal cover plate outwards away from the axial direction of the third mast member, and the two top angles are two top angles of the inner curved surface close to the sail (the two top angles are selected because enough space is reserved at the joint of the inner curved surface and the mast, and the space reserved at the joint of the outer curved surface and the mast is smaller);
the outer edge of the horizontal cover plate is connected with an inclined outer plate in an inclined downward mode, the inclined outer plate is connected with the outer wall of the third mast rod piece to form a cross connection line, and the vertical distance between the cross connection line and the horizontal cover plate is 0.3-0.5 m;
an included angle α formed by the inclined outer plate and the outer wall of the third mast rod piece at the joint line is in the range of more than or equal to 6 degrees and less than or equal to α degrees and less than or equal to 9 degrees;
the two sides of the horizontal cover plate and the two sides of the inclined outer plate are respectively connected through a transition plate (one transition plate at one side), and the transition plate is also connected with the outer wall of the third mast rod piece;
the outer wall of the third mast rod piece, the horizontal cover plate, the inclined outer plate and the transition plate form a hollow area, and a plurality of reinforcing partition plates parallel to the horizontal cover plate are further arranged in the hollow area. (the edge of the reinforcing partition intersects the boundary of the hollow region)
Preferably, the transition plate is a triangular plate.
Preferably, the transition plate is perpendicular to the outer wall of the third mast member.
Preferably, the horizontal cover plate, the inclined outer plate, the transition plate and the outer wall of the third mast member (which means the connection between every two) are all welded.
According to the method, according to stress analysis of a sail structure and spatial layout of the sail structure, a corner position structure at the top of a third mast rod piece with the largest stress is designed, two top angles are selected for reinforcement according to the stress direction of the sail structure, the reinforcement is carried out in a manner that reinforcement is carried out on an outer wall rather than the vicinity of contact surfaces of all rod pieces inside the mast (the reinforcement is difficult to be carried out in the vicinity of the contact surfaces due to space limitation), so that the operation is very simple and convenient, the design method enables the inertia moment of the top end section of the mast to be improved, so that the stress in the vicinity of the corner position of the top end face is reduced, the structural strength and the stability of the corner position are improved, in the reinforcement process, appropriate parameters are selected by comprehensively considering the structure and the stress distribution of the mast (the vertical distance between a cross connection line and a horizontal cover plate is 0.3-0.5 m, an included angle α formed by the cross connection line between an inclined outer plate and the outer wall of the third mast rod piece meets 6 degrees or more α degrees, and the weight of the mast is increased as much as possible on the premise that the weight of the mast is increased, and the mast is increased under the highest control strength is ensured.
Drawings
FIG. 1 is a schematic overall structure of a prior art mast;
FIG. 2 is a schematic view of the third mast section of FIG. 1;
FIG. 3 is a view from the direction A of FIG. 2;
FIG. 4 is a view of the inventive mast taken along direction A of FIG. 2;
fig. 5 is a view from direction B in fig. 4.
Wherein: 1. a first mast member; 2. a second mast member; 3. a third mast member; 4. a first slideway; 5. a second slideway; 6. a horizontal cover plate; 7. a transition plate; 8. an inclined outer plate; 9. an outer wall; 10. cross-connecting lines, 11, and special-shaped reinforcing structures.
Detailed Description
As shown in fig. 1, the conventional segmented slipway connecting mast is divided into three parts from top to bottom, namely a first mast rod 1 positioned at the upper part, a second mast rod 2 sleeved on the periphery of the lower part of the first mast rod 1 through a first slipway 4, and a third mast rod 3 sleeved on the periphery of the lower part of the second mast rod 2 through a second slipway 5, wherein the first mast rod 1, the second mast rod 2 and the third mast rod 3 are rectangular hollow rods;
fig. 2 shows the third mast member 3 alone, fig. 3 shows an a-direction view (top view) of fig. 2, and it can be seen that the third mast member 3 assumes a configuration similar to a rectangle with four top corners (or vertices), and the inventive mast differs from the conventional mast in that reinforcing special-shaped reinforcing structures 11 are added at two of the four top corners, as shown in fig. 4.
Then, select which two vertices?
Firstly, the mast is used for supporting the sail, the sail (not shown) is formed by two curved surfaces and presents a crescent shape, the curved surface with smaller curvature (positioned at the inner side) is called as an inner curved surface, and the curved surface with larger curvature (positioned at the outer side) is called as an outer curved surface; when the sail is erected on the mast, the inner curved surface and the outer curved surface are erected on the four top corners, the inner curved surface is erected on two of the top corners, the outer curved surface is erected on the other two top corners, and the two top corners erected on the inner curved surface are selected for reinforcement, so that the two top corners are more in reserved space and correspond to the two top corners located below in the figure 4.
The anisotropic reinforcement structure is described next. As shown in fig. 5, which is a view from the direction B in fig. 4, a horizontal cover plate 6 is horizontally attached at both of the above-mentioned top corners, facing axially outwards away from the third mast section 3; the outer edge of the horizontal cover plate 6 is connected with an inclined outer plate 8 in an inclined downward mode, the inclined outer plate 8 is connected with the outer wall 9 of the third mast rod piece 3 to form a cross line 10, and the vertical distance between the cross line 10 and the horizontal cover plate 6 is 0.3-0.5 m;
the angle α formed by the inclined outer plate 8 and the outer wall 9 of the third mast bar 3 at the intersection line 10 is in the range 6 ° ≦ α ≦ 9 °, which is a good range calculated, and the specific value of α may be determined by the adjustable space between the top end structure of the mast and the adjacent external structure.
In addition, the two sides of the horizontal cover plate 6 and the inclined outer plate 8 are respectively connected through a transition plate 7 (only the transition plate 7 on one side is shown in the figure, and the transition plate 7 is also arranged on the other side), and the transition plate 7 is also connected with the outer wall 9 of the third mast rod piece 3; the transition plate 7 is preferably a triangular plate, so that the material is saved and the stability is sufficient; the transition plate 7 and the outer wall 9 may be chosen as perpendicular as possible, where appropriate.
The outer wall 9 of the third mast section 3, the horizontal cover plate 6, the inclined outer plate 8 and the transition plate 7 enclose a hollow region, in which a plurality of reinforcing spacers (not shown in the figures but easily imaginable) are arranged parallel to the horizontal cover plate 6, the edges of which intersect the boundaries of the hollow region. A great advantage of being hollow is that the weight of the whole mast can be reduced.
The above connection means may preferably be selected as welding.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (4)
1. A segmented slide connecting mast based on a special-shaped reinforcing structure comprises a mast for supporting a sail which is composed of an inner curved surface and an outer curved surface and presents a crescent shape, the mast is divided into three parts from top to bottom, namely a first mast rod piece positioned at the upper part, a second mast rod piece sleeved on the periphery of the lower part of the first mast rod piece through a first slide, and a third mast rod piece sleeved on the periphery of the lower part of the second mast rod piece through a second slide, the first mast rod piece, the second mast rod piece and the third mast rod piece are rectangular hollow rods, and the segmented slide connecting mast is characterized in that:
two vertex angles of the third mast rod piece are both outwards and horizontally connected with a horizontal cover plate, and the two vertex angles are two vertex angles close to the inner curved surface of the sail;
the outer edge of the horizontal cover plate is connected with an inclined outer plate in an inclined downward mode, the inclined outer plate is connected with the outer wall of the third mast rod piece to form a cross connection line, and the vertical distance between the cross connection line and the horizontal cover plate is 0.3-0.5 m;
an included angle α formed by the inclined outer plate and the outer wall of the third mast rod piece on the intersection line is in the range of 6- α -9 degrees;
the two sides of the horizontal cover plate and the two sides of the inclined outer plate are respectively connected through a transition plate, and the transition plate is also connected with the outer wall of the third mast rod piece;
the outer wall of the third mast rod piece, the horizontal cover plate, the inclined outer plate and the transition plate form a hollow area, and a plurality of reinforcing partition plates parallel to the horizontal cover plate are further arranged in the hollow area.
2. The profiled reinforcement structure based section slipway connection mast of claim 1, characterized in that the transition plate is a triangular plate.
3. The profiled reinforcement structure based segmented ramp connecting mast of claim 1, wherein the transition plate is perpendicular to the outer wall of the third mast member.
4. The sectional slipway connecting mast based on the special-shaped reinforcing structure as claimed in any one of claims 1 to 3, wherein the horizontal cover plate, the inclined outer plate, the transition plate and the outer wall of the third mast member are all welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811491921.7A CN109501961B (en) | 2018-12-07 | 2018-12-07 | Sectional slideway connecting mast based on special-shaped reinforcing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811491921.7A CN109501961B (en) | 2018-12-07 | 2018-12-07 | Sectional slideway connecting mast based on special-shaped reinforcing structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109501961A CN109501961A (en) | 2019-03-22 |
| CN109501961B true CN109501961B (en) | 2020-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811491921.7A Active CN109501961B (en) | 2018-12-07 | 2018-12-07 | Sectional slideway connecting mast based on special-shaped reinforcing structure |
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Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NO940016L (en) * | 1994-01-04 | 1995-07-05 | Thoresen Per Gunnar | Mast design for roller sails |
| US6526901B2 (en) * | 2001-03-30 | 2003-03-04 | Camillo M. Iacoboni | Retractable mast for sailboats |
| DE202011101489U1 (en) * | 2011-06-06 | 2011-10-20 | Wilhelm Debor | Telescopic sail mast with rollable sails |
| CN203318638U (en) * | 2013-04-15 | 2013-12-04 | 中集海洋工程研究院有限公司 | Mast capable of being put down |
| CN205822904U (en) * | 2016-06-21 | 2016-12-21 | 无锡龙之恒科技有限公司 | A kind of pneumatic mast |
| CN206856934U (en) * | 2017-05-11 | 2018-01-09 | 大连船舶工程技术研究中心有限公司 | Liftable type mast for ship recoil simulator |
| CN207917082U (en) * | 2018-03-16 | 2018-09-28 | 张溢卓 | A kind of folding mast for glass reinforced plastic boat |
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2018
- 2018-12-07 CN CN201811491921.7A patent/CN109501961B/en active Active
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| CN109501961A (en) | 2019-03-22 |
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