CN112478047A - Elastic roller connecting rod resettable type polar ship anti-impact bulkhead - Google Patents
Elastic roller connecting rod resettable type polar ship anti-impact bulkhead Download PDFInfo
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- CN112478047A CN112478047A CN202011329931.8A CN202011329931A CN112478047A CN 112478047 A CN112478047 A CN 112478047A CN 202011329931 A CN202011329931 A CN 202011329931A CN 112478047 A CN112478047 A CN 112478047A
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- Prior art keywords
- connecting rod
- stage
- impact
- stressed
- bulkhead
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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
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/14—Hull parts
- B63B3/56—Bulkheads; Bulkhead reinforcements
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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
- B63B3/00—Hulls characterised by their structure or component parts
- B63B3/14—Hull parts
- B63B3/68—Panellings; Linings, e.g. for insulating purposes
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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
- B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
- B63B43/18—Improving safety of vessels, e.g. damage control, not otherwise provided for preventing collision or grounding; reducing collision damage
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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
- B63B43/00—Improving safety of vessels, e.g. damage control, not otherwise provided for
- B63B43/18—Improving safety of vessels, e.g. damage control, not otherwise provided for preventing collision or grounding; reducing collision damage
- B63B2043/185—Improving safety of vessels, e.g. damage control, not otherwise provided for preventing collision or grounding; reducing collision damage using shock absorbing telescoping buffers
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Vibration Dampers (AREA)
Abstract
The invention provides a resilient roller link resettable polar vessel anti-impact bulkhead. The elastic roller connecting rod resettable anti-impact bulkhead of the polar ship comprises an anti-impact structure (2) and two sandwich plates (1) for noise reduction. An elastic roller connecting rod resettable impact resisting structure (2) is arranged between the two sandwich plates (1), each sandwich plate (1) comprises two parallel plate layers, a sandwich unit (1-3) is arranged between the upper plate layer (1-1) and the lower plate layer (1-2), and the elastic roller connecting rod resettable impact resisting structure (2) comprises a primary stress connecting rod (2-5), a secondary stress connecting rod (2-3), a spring and a pulley roller (2-1) structure. The elastic roller connecting rod resettable polar ship shock-resistant bulkhead side chord bulkhead has high strength and excellent vibration and noise reduction effects.
Description
Technical Field
The invention belongs to the technical field of bulkhead protection devices of ships and warships, and particularly relates to an elastic roller connecting rod resettable anti-impact bulkhead of a polar ship.
Background
With the development of modern science and technology, people have wider and more universal application range to ships, and simultaneously, the operational environment of the ships is worse, strong underwater or aerial explosion impact load can greatly influence the normal work of precise instruments and equipment, and can threaten the lives of crews; when the icebreaker of the polar region ship moves forward, the side chord of the ship is also impacted and damaged by ice load when the icebreaker breaks ice, and great hidden danger is caused to the operation safety of the ship and the personal safety of crews. At present, the bulkhead of a ship basically adopts a multi-layer bulkhead structure, a composite structure and a sandwich plate structure to protect the ship. The strength and toughness of the bulkhead of the ship are seriously tested by the occurrence of various natural disasters or artificial disasters. In addition, the ship noise can not only cause sound vibration fatigue damage of the ship equipment structure, but also influence the normal work of various instrument equipment in the cabin. For people living in the cabin, the comfort of the environment is affected slightly, and the human health is harmed seriously.
Therefore, in the design process of the bulkhead of the ship, the attributes of impact resistance, noise prevention and the like need to be considered, the impact-resistant and noise-reducing bulkhead can improve the overall environment of the ship and effectively prevent the integrity of devices in the bulkhead, the whole ship is protected, the personal safety of crews is protected, the comfort of the crews on the ship is further improved, and therefore the development of the impact-resistant and vibration-reducing bulkhead is necessary.
Disclosure of Invention
The invention aims to provide an impact-resistant and noise-proof elastic roller connecting rod resettable polar ship impact-resistant bulkhead which comprises an impact-resistant structural element and two noise-reducing sandwich plates, wherein the two noise-reducing sandwich plates are fixedly connected to the upper end of the impact-resistant structural element and the lower end of an impact-resistant structure respectively. The structure can effectively relieve impact force and reduce noise, the impact force is dispersed, and the original position can be recovered after the impact force is relieved.
The technical scheme is implemented as follows: the invention provides an impact-resistant and noise-proof elastic roller connecting rod resettable polar ship impact-resistant bulkhead which comprises an impact-resistant structure 2 and two noise-reducing sandwich plates 1, wherein the two noise-reducing sandwich plates 1 comprise two parallel plate layers, the sandwich plates 1-3 are arranged between an upper plate layer 1-1 and a lower plate layer 1-2, fillers 1-4 are filled in gaps among the upper plate layer 1-1, the lower plate layer 1-2 and the sandwich plates 1-3, and the elastic roller connecting rod resettable impact-resistant structure 2 is of a bilateral symmetry structure and comprises a primary stressed connecting rod 2-5, a secondary stressed connecting rod 2-3, a long spring 2-6, a short spring 2-2 and a pulley 2-1. The first-stage stressed connecting rod 2-5 comprises a first-stage stressed left connecting rod 2-5-1 and a first-stage stressed right connecting rod 2-5-2, the second-stage stressed connecting rod 2-3 comprises a second-stage stressed left connecting rod 2-3-1 and a second-stage stressed right connecting rod 2-3-2, the pulley 2-1 is connected with the second-stage stressed connecting rod 2-3 through a pin shaft 2-4, and the first-stage stressed connecting rod 2-5 and the second-stage stressed right connecting rod 2-3 are hinged through a pin shaft 2-4.
When the first-stage stressed connecting rod is subjected to external impact force, the first-stage stressed left connecting rod 2-5-1 and the first-stage stressed right connecting rod 2-5-2 rotate around the pin shaft 2-4-2, the included angle between the first-stage stressed left connecting rod 2-5-1 and the first-stage stressed right connecting rod 2-5-2 is increased, and at the moment, the long spring 2-6 stretches to absorb consumed energy and alleviate the external impact force.
The impact-resistant structure 2 is a bilateral symmetry structure, taking the left side as an example, when the first-stage stress connecting rod 2-5 is stressed, force is transmitted to the second-stage stressed connecting rod 2-3, the second-stage stressed left connecting rod 2-3-1 and the second-stage stressed right connecting rod 2-3-2 rotate around the pin shaft 2-4-1, an included angle between the second-stage stressed left connecting rod 2-3-1 and the second-stage stressed right connecting rod 2-3-2 is increased, at the moment, the short elastic spring 2-2 stretches to absorb consumed energy and relieve external impact force, and the pulley roller 2-1 slides on the lower sandwich plate layer after being stressed by the connecting rod force, the left pulley roller 2-1-1 slides leftwards, and the right pulley roller 2-1-2 slides rightwards, so that the force which is originally vertical to the upper sandwich plate layer 1-1 is decomposed into the force which is parallel to the sandwich plate layer.
The long springs 2-6 and the short springs 2-2 can contract after external impact force disappears, the first-stage stressed connecting rods 2-5 and the second-stage stressed connecting rods 2-3 respectively rotate around the pin shafts 2-4 under the action of spring tension, and the pulley rollers 1 rotate to enable the anti-impact component 2 to recover the position before stress and to be ready to meet the external impact force again.
Two ends of the long spring 2-6 are respectively fixed on the first-stage stressed connecting rod 2-5, two ends of the short spring 2-2 are respectively fixed on the second-stage stressed connecting rod 2-3, the screw pitches of the long spring 2-6 and the short spring 2-2 are tight, high-quality spring steel is adopted, and the initial state is in a natural state.
The primary stressed connecting rod 2-5, the secondary stressed connecting rod 2-3, the pulley roller 2-1 and the left and right connecting rods are movably connected through a pin shaft.
The upper parts of the first-stage stress connecting rods 2-5 are arc-shaped, so that the contact area between the first-stage stress connecting rods and the upper sandwich plate is increased.
The upper plate layer 1-1 and the lower plate layer 1-2 of the noise reduction sandwich plate 1 are both 3mm steel plates, and the thickness of the noise reduction sandwich plate 1 is 25 mm.
The fillers 1-4 are foamed aluminum.
The scheme has the following advantages:
1. the invention has good shock resistance, and solves the problem that when the bulkhead of the ship is subjected to the action of shock load, the shock wave causes bad influence on crews and a ship body;
2. the noise reduction performance is good, the excellent living environment is provided, and the concealment of the ship is improved;
3. after stress is relieved, the device still has the capability of restoring the original position, and has long service life and high economical efficiency;
4. reasonable structure, movable connection, convenient manufacture and convenient installation, maintenance and replacement of parts.
Drawings
Fig. 1 is a schematic view of the general structure of the present invention.
Fig. 2 is a schematic view of a resettable impact resistant structure of the resilient roller link.
Figure 3 is a schematic view of a sandwich plate construction.
FIG. 4 is a schematic diagram of the arrangement and combination of impact-resistant elements of the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings:
as shown in fig. 1, the elastic roller link resettable polar ship anti-impact bulkhead provided by the invention comprises two parallel sandwich plates 1, and an elastic roller link resettable anti-impact noise reduction structure 2 is arranged between the two sandwich plates 1.
As shown in fig. 2, the elastic roller link resettable impact resistant structure 2 is a bilateral symmetry structure, and comprises a first-stage stressed link 2-5, a second-stage stressed link 2-3, a long spring 2-6, a short spring 2-2 and a pulley 2-1. The first-stage stressed connecting rod 2-5 comprises a first-stage stressed left connecting rod 2-5-1 and a first-stage stressed right connecting rod 2-5-2, the second-stage stressed connecting rod 2-3 comprises a second-stage stressed left connecting rod 2-3-1 and a second-stage stressed right connecting rod 2-3-2, the pulley 2-1 is connected with the second-stage stressed connecting rod 2-3 through a pin shaft 2-4, and the first-stage stressed connecting rod 2-5 and the second-stage stressed right connecting rod 2-3 are hinged through a pin shaft 2-4.
When the first-stage stressed connecting rod is subjected to external impact force, the first-stage stressed left connecting rod 2-5-1 and the first-stage stressed right connecting rod 2-5-2 rotate around the pin shaft 2-4-2, the included angle between the first-stage stressed left connecting rod 2-5-1 and the first-stage stressed right connecting rod 2-5-2 is increased, and at the moment, the long spring 2-6 stretches to absorb consumed energy and alleviate the external impact force.
The impact-resistant structure 2 is a bilateral symmetry structure, taking the left side as an example, when the first-stage stress connecting rod 2-5 is stressed, force is transmitted to the second-stage stressed connecting rod 2-3, the second-stage stressed left connecting rod 2-3-1 and the second-stage stressed right connecting rod 2-3-2 rotate around the pin shaft 2-4-1, an included angle between the second-stage stressed left connecting rod 2-3-1 and the second-stage stressed right connecting rod 2-3-2 is increased, at the moment, the short elastic spring 2-2 stretches to absorb consumed energy and relieve external impact force, and the pulley roller 2-1 slides on the lower sandwich plate layer after being stressed by the connecting rod force, the left pulley roller 2-1-1 slides leftwards, and the right pulley roller 2-1-2 slides rightwards, so that the force which is originally vertical to the upper sandwich plate layer 1-1 is decomposed into the force which is parallel to the sandwich plate layer.
The long springs 2-6 and the short springs 2-2 can contract after external impact force disappears, the first-stage stressed connecting rods 2-5 and the second-stage stressed connecting rods 2-3 respectively rotate around the pin shafts 2-4 under the action of spring tension, and the pulley rollers 1 rotate to enable the anti-impact component 2 to recover the position before stress and to be ready to meet the external impact force again.
Two ends of the long spring 2-6 are respectively fixed on the first-stage stressed connecting rod 2-5, two ends of the short spring 2-2 are respectively fixed on the second-stage stressed connecting rod 2-3, the screw pitches of the long spring 2-6 and the short spring 2-2 are tight, high-quality spring steel is adopted, and the initial state is in a natural state. In order to ensure more efficient energy absorption, high-quality spring steel is adopted here, the material is 50CrVA, and the high-quality spring steel has high strength, high fatigue degree and good plasticity and toughness.
The primary stressed connecting rod 2-5, the secondary stressed connecting rod 2-3, the pulley roller 2-1 and the left and right connecting rods are movably connected through a pin shaft.
The upper parts of the first-stage stress connecting rods 2-5 are arc-shaped, so that the contact area between the first-stage stress connecting rods and the upper sandwich plate is increased, and the impact stress on the lower sandwich plate is reduced.
As shown in fig. 3, the upper plate layer 1-1 and the lower plate layer 1-2 of the noise reduction sandwich panel 1 are both 3mm steel plates, and the thickness of the noise reduction sandwich panel 1 is 25 mm. The filler 1-4 is foamed aluminum, the foamed aluminum has the advantages of small density, high impact absorption capacity, strong sound insulation and noise reduction performance and the like, plays a key protection role in the action of shock waves, improves the energy absorption of the structure, is further insulated, can provide continuous and uniform support for the steel plate, greatly improves the local bending resistance of the steel plate, and improves the noise reduction capacity.
When the elastic roller connecting rod resettable polar ship shock-resistant bulkhead provided by the invention is subjected to external vertical impact force to act on the upper layer of the sandwich plate 1, a part of energy is absorbed by the sandwich plates 1-3 in the sandwich plate 1 and the foamed aluminum filling, and the energy is converted into deformation energy and heat energy. And then is transmitted to the inside through a first-stage stress connecting rod 2-5 and a second-stage stress connecting rod 2-3. The long spring 2-6 and the short spring 2-2 elastically deform when stressed and are in a stretching energy-absorbing state, so that impact energy is weakened. And finally, the pulley roller 2-1 rolls on the lower layer of the sandwich plate 1 to disperse the stress in time. And when the external force is relieved, the elastic roller connecting rod resettable impact resisting element can return to the situation before impact when the spring is restored to contract so as to continuously resist the impact next time, can be repeatedly used, has good impact resistance and longer service life, and achieves good impact resistance, explosion resistance and noise prevention effects.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. The utility model provides a but elasticity roller connecting rod formula polar region boats and ships bulkhead that shocks resistance which characterized in that: including impact resistance structure (2) and two battenboard for making an uproar (1), two battenboard for making an uproar (1) for making an uproar fall be two parallel plate layers, be provided with battenboard (1-3) between upper portion plate layer (1-1) and lower part plate layer (1-2), upper portion plate layer (1-1), lower part plate layer (1-2) and battenboard (1-3) clearance between fill filler (1-4), elastic roller connecting rod formula impact resistance structure (2) that can reset be bilateral symmetry structure, including one-level atress connecting rod (2-5), second grade atress connecting rod (2-3), long spring (2-6), short spring (2-2) and pulley (2-1).
2. The first-stage stressed connecting rod (2-5) comprises a first-stage stressed left connecting rod (2-5-1) and a first-stage stressed right connecting rod (2-5-2), the second-stage stressed connecting rod (2-3) comprises a second-stage stressed left connecting rod (2-3-1) and a second-stage stressed right connecting rod (2-3-2), the pulley (2-1) is connected with the second-stage stressed connecting rod (2-3) through hinging, and the first-stage stressed connecting rod (2-5) and the second-stage stressed connecting rod (2-3) are hinged through a pin shaft.
3. The resilient roller link repositionable polar vessel impact bulkhead of claim 1, wherein: two ends of the long spring (2-6) are respectively fixed on the first-stage stressed connecting rod (2-5), and two ends of the short spring (2-2) are respectively fixed on the second-stage stressed connecting rod (2-3).
4. The resilient roller link repositionable polar vessel impact bulkhead of claim 2, wherein: the long spring (2-6) and the short spring (2-2) are made of spring steel and are in a natural state in an initial state.
5. The resilient roller link repositionable polar vessel impact bulkhead of any of claims 1-3, wherein: the first-stage stress connecting rod (2-5), the second-stage stress connecting rod (2-3), the pulley roller (2-1) and the left and right connecting rods are movably connected through pin shafts.
6. The resilient roller link repositionable polar vessel impact bulkhead of any of claims 1-3, wherein: the upper part of the first-stage stress connecting rod (2-5) is arc-shaped.
7. The resilient roller link repositionable polar vessel impact bulkhead of any of claims 1-3, wherein: the upper plate layer (1-1) and the lower plate layer (1-2) of the noise reduction sandwich plate (1) are both 3mm steel plates, and the thickness of the noise reduction sandwich plate (1) is 25 mm.
8. The resilient roller link repositionable polar vessel impact bulkhead of any of claims 1-3, wherein: the filler (1-4) is foamed aluminum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011329931.8A CN112478047A (en) | 2020-11-24 | 2020-11-24 | Elastic roller connecting rod resettable type polar ship anti-impact bulkhead |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011329931.8A CN112478047A (en) | 2020-11-24 | 2020-11-24 | Elastic roller connecting rod resettable type polar ship anti-impact bulkhead |
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| Publication Number | Publication Date |
|---|---|
| CN112478047A true CN112478047A (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011329931.8A Pending CN112478047A (en) | 2020-11-24 | 2020-11-24 | Elastic roller connecting rod resettable type polar ship anti-impact bulkhead |
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| CN (1) | CN112478047A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114771720A (en) * | 2022-04-29 | 2022-07-22 | 江苏科技大学 | A structure of making an uproar falls in multiple buffering that is used for icebreaking ship bulkhead to shock resistance |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020100404A1 (en) * | 2001-01-26 | 2002-08-01 | Nofire Technologies, Inc. | Pre-fabricated fireproof bulkhead with special interlocking joints for a ship |
| CN103803015A (en) * | 2014-01-20 | 2014-05-21 | 江苏海事职业技术学院 | Antiknock and noise-preventing cabin wall of ship superstructure |
| CN107554685A (en) * | 2017-08-08 | 2018-01-09 | 武汉理工大学 | A kind of shock resistance platform peculiar to vessel |
| CN109018192A (en) * | 2018-08-31 | 2018-12-18 | 江苏海事职业技术学院 | It hits to formula shock resistance ship cabin |
| CN110126976A (en) * | 2019-04-02 | 2019-08-16 | 中船第九设计研究院工程有限公司 | A kind of siding shock-damping structure of the accommodation space for vessels |
| CN210149500U (en) * | 2019-04-02 | 2020-03-17 | 中船第九设计研究院工程有限公司 | High-stability connecting component of ship cabin decorative wall plate |
-
2020
- 2020-11-24 CN CN202011329931.8A patent/CN112478047A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020100404A1 (en) * | 2001-01-26 | 2002-08-01 | Nofire Technologies, Inc. | Pre-fabricated fireproof bulkhead with special interlocking joints for a ship |
| CN103803015A (en) * | 2014-01-20 | 2014-05-21 | 江苏海事职业技术学院 | Antiknock and noise-preventing cabin wall of ship superstructure |
| CN107554685A (en) * | 2017-08-08 | 2018-01-09 | 武汉理工大学 | A kind of shock resistance platform peculiar to vessel |
| CN109018192A (en) * | 2018-08-31 | 2018-12-18 | 江苏海事职业技术学院 | It hits to formula shock resistance ship cabin |
| CN110126976A (en) * | 2019-04-02 | 2019-08-16 | 中船第九设计研究院工程有限公司 | A kind of siding shock-damping structure of the accommodation space for vessels |
| CN210149500U (en) * | 2019-04-02 | 2020-03-17 | 中船第九设计研究院工程有限公司 | High-stability connecting component of ship cabin decorative wall plate |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114771720A (en) * | 2022-04-29 | 2022-07-22 | 江苏科技大学 | A structure of making an uproar falls in multiple buffering that is used for icebreaking ship bulkhead to shock resistance |
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Application publication date: 20210312 |
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