CN220721316U - Tilting type front mast lamp pole - Google Patents
Tilting type front mast lamp pole Download PDFInfo
- Publication number
- CN220721316U CN220721316U CN202322510301.6U CN202322510301U CN220721316U CN 220721316 U CN220721316 U CN 220721316U CN 202322510301 U CN202322510301 U CN 202322510301U CN 220721316 U CN220721316 U CN 220721316U
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- China
- Prior art keywords
- rod body
- mast
- front mast
- limit switch
- lower rod
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- 238000005286 illumination Methods 0.000 claims description 4
- 230000006698 induction Effects 0.000 claims 1
- 238000007689 inspection Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000007537 lampworking Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
The utility model discloses a tilting front mast lamp post, which comprises an upper rod body, a lower rod body and a limit switch, wherein the upper rod body is connected with the lower rod body; the lower end of the lower rod body is arranged on the front end structure of the helicopter platform; the lower end of the upper rod body is rotatably connected with the upper end of the lower rod body; the upper end of the upper rod body is provided with a front mast lamp; the limit switch is arranged at the upper end part of the lower rod body. The utility model not only meets the related legal requirements, but also is convenient and effective in mast lamp arrangement scheme, and meets the urgent demands of compact engineering ship designers and users.
Description
Technical Field
The present utility model relates to compact engineering vessel navigation signal light systems, and more particularly to a tiltable front mast pole.
Background
According to the 1972 international maritime affairs collision avoidance rule and the national legal inspection technical rule of sailing ships of the China maritime affairs bureau, two mast lamps are required to be arranged for ships with the length of more than 50 meters, and the following installation requirements are provided in the national legal inspection technical rule of sailing ships (chapter numbers are taken from the national legal inspection technical rule of sailing ships):
8.2.3.2 mounting of the head mast:
vertical position:
(1) in addition to operating the lights and the chapter 8.2.3.1 (4), the mast should be above and away from all other lights and shades;
(2) the height of the front mast lamp above the ship body is not less than 6m; if the ship width is larger than 6m, the lamp height should not be smaller than the ship width, but not necessarily larger than 12m;
horizontal position:
(1) the front mast lamp is arranged on the longitudinal section of the ship;
(2) the front mast lamps should be positioned no more than 1/4 of the ship's bow.
8.2.3.3 mounting of the rear mast:
(1) Vertical position:
(1) the rear mast should be at least 4.5m higher than the front mast;
(2) the vertical distance between the front and rear masts should be such that in all normal draft conditions, the front masts of the rear masts should be visible above and separated from each other when viewed from the sea surface 1000m from the bow.
(2) Horizontal position:
(1) the rear mast lamp is arranged on the longitudinal section of the ship;
(2) the horizontal distance between the front and rear masts should not be less than 1/2 of the ship's length, but not necessarily greater than 100m.
In the traditional offshore wind power installation ship or the offshore wind power installation platform, a high main crane is arranged at the stern of a ship body, a mast lamp at the stern can be installed by depending on the main crane, and a section of base for a rear mast lamp is generally extended on a propeller strut or a cantilever crane of the main crane. The front mast lights are typically disposed on the signal mast at the compass deck of the bow.
Due to the special arrangement, the compact engineering ship is generally arranged at the bow and is provided with a helicopter platform, and the middle part and the stern are working decks. The length of the ship is generally more than 50 meters, and two masts are arranged according to the requirement.
The front mast lamp can be arranged on the signal mast of the bow compass deck like a traditional offshore wind power installation ship or platform, the rear mast lamp is at least 4.5 meters higher than the front mast lamp according to the requirement, the horizontal distance between the rear mast lamp and the front mast lamp is not less than 1/2 of the ship length, and a high enough rear mast is arranged on the deck at the stern of the offset ship if the requirement is met. The scheme has two defects, namely, the back mast occupies the working area on the deck, interferes with the working range of the deck crane, and possibly causes collision of the back mast under the loading and unloading working condition of the deck, thereby increasing the working risk; secondly, the too high back mast has high strength requirements on the base and the mast, and the maintenance of the mast lamp is also problematic.
And in addition, an equivalent design scheme is adopted to apply for the exemption from the supervisor according to the equivalent requirement in legal inspection technical rules. The application exemption requires to prepare an equivalent design application letter and an equivalent design proposal to send to a class society and arrange an expert conference, the process is complicated, and long time is required to be consumed, so that the project production progress is affected.
Disclosure of Invention
Aiming at the defects in the prior art, the utility model aims to provide the tilting type front mast pole, which not only meets the related legal requirements, but also is convenient and effective in mast arrangement scheme, and meets the urgent demands of compact engineering ship designers and users.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a tilting front mast lamp post comprises an upper rod body, a lower rod body and a limit switch;
the lower end of the lower rod body is arranged on the front end structure of the helicopter platform;
the lower end of the upper rod body is rotatably connected with the upper end of the lower rod body;
the upper end of the upper rod body is provided with a front mast lamp;
the limit switch is arranged at the upper end part of the lower rod body.
Preferably, the height of the lower rod body is flush with the horizon of the helicopter platform.
Preferably, the lower end of the upper rod body is connected with the upper end of the lower rod body by a rotating shaft.
Preferably, the limit switch is an inductive limit switch.
Preferably, the limit switch and the illumination of the helicopter platform are arranged in a linkage manner.
The utility model provides a tilting type front mast pole, which combines two working modes thereof, and solves the problem of mast arrangement of a compact engineering ship provided with a helicopter platform. The front mast is made into a tilting type lamp rod, so that the limit of the helicopter platform on the height of a platform surface object can be perfectly avoided. And the limit switch is linked with the helicopter platform lighting system, so that the mast is ensured to be in a falling state when the helicopter platform is in lighting work.
Drawings
FIG. 1 is a schematic view of a structure of a pourable front mast pole of the present utility model;
FIG. 2 is a schematic diagram of a mast operational mode of the pourable front mast of the present utility model;
FIG. 3 is a schematic view of a helicopter platform operating mode of the tiltable front mast of the present utility model.
Detailed Description
In order to better understand the above technical solution of the present utility model, the technical solution of the present utility model is further described below with reference to the accompanying drawings and examples.
Referring to fig. 1 to 3, the utility model provides a tiltable front mast pole, which comprises an upper pole body 2, a lower pole body 3 and a limit switch 5.
The lower end of the lower rod body 3 is arranged on the front end structure of the helicopter platform 8, and the height of the lower rod body 3 is flush with the horizon of the helicopter platform 8.
The lower end of the upper rod body 2 is connected with the upper end of the lower rod body 3 by a rotating shaft 4 to form rotatable connection.
The upper end of the upper rod body 2 is provided with a front mast lamp 1.
The limit switch 5 is arranged at the upper end part of the lower rod body 3, the limit switch 5 adopts an inductive limit switch and is in linkage arrangement with the illumination of the helicopter platform 8, so that the tilting type front mast lamp rod is required to be in a tilting state when the helicopter platform 8 works in illumination.
The tilting type front mast lamp rod is arranged to be tilting, so that the limitation of the helicopter platform 8 on the height of a platform surface object can be perfectly avoided.
In order to meet the height difference requirements of the front and rear masts, the rear masts are arranged at the position with the highest possible height of the ship body. And the requirements of the distance difference between the front mast lamp and the rear mast lamp are considered, so that the rear mast lamp is most suitable to be arranged at the top of a trestle tower barrel in the ship. The arrangement not only reasonably utilizes the existing resources on the ship, but also is convenient to maintain.
The tilting type front mast lamp post is divided into two working modes: a mast operating mode and a helicopter platform operating mode. The method comprises the following steps:
1) Mast lamp working mode
At this time, the tilting type front mast 6 of the present utility model keeps forward, the rotating shaft 4 is locked, and the front mast 1 is up as shown in fig. 2. The height difference and horizontal distance of the front and rear masts meet the specification and regulation requirements. The limit switch 5 signals to the lighting system of the helicopter platform 8 to display the working state of the mast.
2) Helicopter platform working mode
At this time, the tilting type front mast 6 of the present utility model keeps the reverse direction, the rotation shaft 4 is opened, and the front mast 1 is adjusted downward as shown in fig. 3. The tilting front mast 6 of the utility model can avoid the limitation of the helicopter platform 8 on the height of the object on the surface of the platform. At the moment, the signals of the limit switch 5 are changed and fed back to the lighting system of the helicopter platform 8, so that the tilting front mast 6 is in a tilting state, and the helicopter platform 8 meets the lifting requirement of the helicopter 7.
After the helicopter deck 8 is used, the pourable front mast 6 of the present utility model is immediately restored to the mast mode.
It will be appreciated by persons skilled in the art that the above embodiments are provided for illustration only and not for limitation of the utility model, and that variations and modifications of the above described embodiments are intended to fall within the scope of the claims of the utility model as long as they fall within the true spirit of the utility model.
Claims (5)
1. A pourable front mast pole, characterized in that: comprises an upper rod body, a lower rod body and a limit switch;
the lower end of the lower rod body is arranged on the front end structure of the helicopter platform;
the lower end of the upper rod body is rotatably connected with the upper end of the lower rod body;
the upper end of the upper rod body is provided with a front mast lamp;
the limit switch is arranged at the upper end part of the lower rod body.
2. The pourable front mast pole set forth in claim 1, wherein: the height of the lower rod body is flush with the horizon of the helicopter platform.
3. The pourable front mast pole set forth in claim 1, wherein: the lower end of the upper rod body is connected with the upper end of the lower rod body by adopting a rotating shaft.
4. The pourable front mast pole set forth in claim 1, wherein: the limit switch adopts an induction type limit switch.
5. The pourable front mast pole set forth in claim 4, wherein: the limit switch is arranged in linkage with the illumination of the helicopter platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322510301.6U CN220721316U (en) | 2023-09-15 | 2023-09-15 | Tilting type front mast lamp pole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322510301.6U CN220721316U (en) | 2023-09-15 | 2023-09-15 | Tilting type front mast lamp pole |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220721316U true CN220721316U (en) | 2024-04-05 |
Family
ID=90488086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322510301.6U Active CN220721316U (en) | 2023-09-15 | 2023-09-15 | Tilting type front mast lamp pole |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220721316U (en) |
-
2023
- 2023-09-15 CN CN202322510301.6U patent/CN220721316U/en active Active
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