CN112249258A - Ship building and launching method suitable for winter - Google Patents
Ship building and launching method suitable for winter Download PDFInfo
- Publication number
- CN112249258A CN112249258A CN202010375272.5A CN202010375272A CN112249258A CN 112249258 A CN112249258 A CN 112249258A CN 202010375272 A CN202010375272 A CN 202010375272A CN 112249258 A CN112249258 A CN 112249258A
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- Prior art keywords
- ship
- wooden sliding
- sliding plate
- wire rope
- wooden
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Classifications
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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
- B63B73/00—Building or assembling vessels or marine structures, e.g. hulls or offshore platforms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/06—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to wood
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27M—WORKING OF WOOD NOT PROVIDED FOR IN SUBCLASSES B27B - B27L; MANUFACTURE OF SPECIFIC WOODEN ARTICLES
- B27M1/00—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching
- B27M1/08—Working of wood not provided for in subclasses B27B - B27L, e.g. by stretching by multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C3/00—Launching or hauling-out by landborne slipways; Slipways
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Forests & Forestry (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a ship building and launching method suitable for winter, which comprises the following steps: step one, lubricating grease is prepared, and step two, the surfaces of the wooden sliding plate and the slideway which need to be subjected to grease burning are cleaned and dried; removing burrs on the surfaces of the wooden sliding plate and the slideway, and grinding the surfaces to be flat; step four, heating the lubricating grease into a liquid state; welding lifting lugs on the side parts of the wooden sliding plates, wherein two lifting lugs are welded on one side of each wooden sliding plate; carrying the ship on the ship deck; sixthly, launching the ship along the inclined slide way, and connecting the wooden slide plate to the mooring pile through a steel wire rope; and seventhly, after the ship is launched, the steel beam and the wooden sliding block enter the water together with the ship and are recovered. The wooden sliding plate is connected to the mooring bollard through the steel wire rope, so that the phenomenon that the wooden sliding plate turns over to impact the bottom of the ship when sliding outwards due to the action of water flow is avoided, and the bottom of the ship is prevented from being damaged.
Description
Technical Field
The invention belongs to the technical field of ship construction, and particularly relates to a ship construction and launching method applicable to winter.
Background
The ship is built on the slipway, the longitudinal slideway is adopted for launching after the building is finished, the steel ship and the wooden sliding plate can slide downwards to the water along the slideway with acceleration, and the wooden sliding plate is located below the ship, so that the wooden sliding plate can firstly submerge into the water, then floats upwards under the action of buoyancy, and is recovered after floating out of the water. In the floating process, if no measures are taken, the sliding plate can turn over from horizontal to vertical at the bottom of the ship under the action of water flow or other actions. The slide plate is of a cuboid structure, the length of the slide plate is 8 meters, the width of the slide plate is 1.6 meters, and the height of the slide plate is 0.4 meter, so that the slide plate is easy to impact the bottom of a ship under the action of a centripetal force during turning over, and the accident of damage to the bottom of the ship is caused.
On the other hand, before the ship is launched, in order to ensure sufficient lubricity and hardness between the wooden slide plate and the slide way surface when the ship is launched on the slipway, it is necessary to coat grease disposed on each of the slide plate and the slide way surface. The temperature is different in different seasons, so that the performance of the grease is changed, and the launching effect of the ship is influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a ship building and launching method suitable for winter, which can solve the problem that the lubrication degree and hardness between a wooden sliding block and a sliding channel surface are insufficient when a ship launches in winter, and can prevent the wooden sliding plate from impacting the bottom of the ship in the launching process of the ship.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a ship building and launching method suitable for winter, which comprises the following steps:
step one, preparing lubricating grease, wherein the lubricating grease consists of 10% of rosin and 90% of white wax in percentage by mass;
cleaning and drying the surfaces of the wooden sliding plate and the slideway to be coated with the grease;
removing burrs on the surfaces of the wooden sliding plate and the slideway, and grinding the surfaces to be flat;
heating the lubricating grease to be liquid, and pouring and coating the surfaces of the wooden sliding plate and the slideway layer by layer according to the sequence of temperature from high to low;
welding lifting lugs on the side parts of the wooden sliding plates, wherein two lifting lugs are welded on one side of each wooden sliding plate;
step six, mounting a support steel frame on the ship table board, welding the support steel frame between two slideways, respectively placing two wooden sliding plates on the slideways, placing a steel beam on the support steel frame, placing two ends of the steel beam on the wooden sliding plates, and carrying a ship on the steel beam;
before the ship is launched, a lifting lug is arranged on one side, close to the supporting steel frame, of the wooden sliding plate on one downstream side, one end of a first steel wire rope is connected to the lifting lug, and the other end of the first steel wire rope is connected with a cable pile on the side of the ship on the downstream side; lifting lugs are arranged on two sides of the wooden sliding plate on the upstream side, the lifting lug on one side close to the supporting steel frame is connected with one end of a second steel wire rope, the other end of the second steel wire rope is connected with the mooring pile on the side of the downstream side, the lifting lug on one side far away from the supporting steel frame is connected with the mooring pile on the side of the upstream side, and the ship is launched along the inclined slide way;
and step eight, after the ship is launched, the steel beam and the wooden sliding block enter the water along with the ship, one end of the first steel wire rope connected with the bollard is detached and is delivered to a tug, the floated wooden sliding plate is dragged out from the bottom of the ship to be recycled, one end of the second steel wire rope connected with the bollard is detached, one end of the third steel wire rope connected with the bollard is detached and connected with the tug, and the floated wooden sliding plate is dragged out from the bottom of the ship to be recycled.
In the second step, when the wooden sliding plate and the slideway are cleaned and dried, the fire cock is used for drying for three times, and the cleaning is carried out while drying.
As a preferable technical scheme, in the fourth step, three layers are coated, the temperature of the lubricating grease liquid is 150 ℃ when the first layer is coated, the temperature of the lubricating grease liquid is 130 ℃ when the second layer is coated, the temperature of the lubricating grease liquid is 120 ℃ when the third layer is coated, and the allowable temperature error of each layer is plus or minus 5 ℃ when each layer is coated.
As the preferred technical scheme, the lubricating grease is applied by adopting oil pots, the two oil pots are alternately applied in one group, and the application process is not suspended.
As a preferable technical scheme, the lubricating grease can be applied by coating the upper layer after the front layer is dried and hardened before coating, and the total thickness of the three layers after coating is 3-5 mm.
As a preferable technical scheme, when the lubricating grease is applied by pouring, the bubble range on the surface of the lubricating grease is controlled to be less than 5% of the bubble occurrence rate of less than 10mm in diameter per square meter, and the bubbles with the diameter of more than 10mm are not allowed to occur.
And in the sixth step, two wooden sliding plates are arranged on the slideway at each side, and the wooden sliding plates at one side are connected with the wooden sliding plates in a binding manner by a fastening steel wire rope with the diameter of 24 mm penetrating through a lifting lug preset on the wooden sliding plates.
As a preferable technical solution, the first steel wire rope, the second steel wire rope and the third steel wire rope are respectively provided in two numbers, and the diameter of each steel wire rope is 46 mm.
Compared with the prior art, the invention has the beneficial effects that:
(1) the wooden sliding plate is connected to the mooring bollard through the steel wire rope, so that the phenomenon that the wooden sliding plate turns over to impact the bottom of the ship when sliding outwards due to the action of water flow is avoided, and the bottom of the ship is prevented from being damaged.
(2) The lubricating grease is poured on the contact surface of the wooden sliding block and the slideway, the proportion of the lubricating grease is suitable for winter, and the smooth contact surface of the wooden sliding block and the slideway is ensured when the ship is launched.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a wood sliding plate at a downstream position in the embodiment.
Fig. 2 is a schematic structural view of the wood sliding plate at the upstream position in the embodiment.
Fig. 3 is a schematic view of the connection relationship of the wood sliding plates on the same side in the embodiment.
Fig. 4 is a schematic view of the structure of the ship launching of the embodiment.
Wherein the reference numerals are specified as follows: the steel-wire rope combined ship comprises a ship table top 1, a supporting steel frame 2, a wooden sliding plate 3, a lifting lug 4, a first steel wire rope 5, a second steel wire rope 6, a third steel wire rope 7, a fastening steel wire rope 8 and a steel cross beam 9.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
The present embodiment provides a method for constructing and launching a ship in winter, where winter is a temperature in the range of 0-10 degrees celsius, and the present invention will be described below with reference to launching a ship from huangpu river as an example.
As shown in fig. 1 to 3, during construction of the ship, the sides of the side of the ship are respectively directed to the upper sea direction and the wurime direction (a represents the upper sea direction and B represents the wurime direction), the rime direction is located upstream and the upper sea direction is located downstream, and the water flow is directed from the wurime direction to the upper sea direction. When the wooden sliding plate 3 is removed by adopting the traditional method, the wooden sliding plate 3 on one side of the Shanghai direction can not collide with the bottom of the ship all the time along with the forward movement of water flow, but the wooden sliding plate 3 on one side of the Wurime direction can turn over towards the bottom of the ship due to the action of the water flow, and then the wooden sliding plate 3 collides with the bottom of the ship to destroy the bottom of the ship. In order to solve the above problem, the solution of the present embodiment is as follows:
step one, lubricating grease is prepared, wherein the lubricating grease consists of 10% of rosin and 90% of white wax in percentage by mass.
And step two, cleaning and drying the surfaces of the wooden sliding plate 3 and the slideway which need to be coated with the grease, and drying for three times by using an initiating explosive device tap, wherein the number of times can be increased according to specific conditions, and the cleaning is carried out while drying.
And step three, removing burrs on the surfaces of the wooden sliding plate 3 and the slideway, and grinding the surfaces to be flat.
And step four, heating the lubricating grease into a liquid state, and pouring and coating the lubricating grease on the surfaces of the wooden sliding plate 3 and the slideway layer by layer according to the sequence of temperature from high to low. The oil can is used for three-layer coating, the temperature of each layer is controlled to be 150 ℃, 130 ℃ and 120 ℃ (the temperature is allowed to be +/-5 ℃), and the total thickness of the three layers is 3-5 mm. Two oil pots are required to be in a group and are alternately carried out, so that the coating is not stopped midway. When in burning, the smoothness of the grease surface needs to be noticed, and the phenomena of layering and shelling are not allowed to exist; the bubble range on the grease surface is controlled to be that the bubble occurrence rate is less than 5% below 10mm per square meter of diameter, and the bubble occurrence rate is not allowed to be more than 10 mm. And (4) after the front layer is dry and hard, the upper layer can be coated after the burning coating is confirmed. When the wooden sliding plate 3 is turned over and stacked, the wooden sliding plate needs to be lightly hung to prevent garbage and sundries from being mixed and the grease surface from being damaged, and the field is cleaned to be greased. For convenience of cleaning, the site is watered before the coating.
And fifthly, welding lifting lugs 4 at the side parts of the wooden sliding plates 3, and welding two lifting lugs 4 at one side of each wooden sliding plate 3. The wooden sliding plate 3 positioned on one side of the Shanghai direction is welded with a lifting lug 4 on one side. The wooden sliding plate 3 positioned on one side of the rime direction is welded with lifting lugs 4 on two sides, wherein two lifting lugs are welded on one side, and one lifting lug is welded on the other side.
Step six, installing a supporting steel frame 2 on the ship table board 1, welding the supporting steel frame 2 between two slideways, respectively placing two wooden sliding plates 3 on the slideways, placing a steel cross beam 9 on the supporting steel frame 2, placing two ends of the steel cross beam 9 on the wooden sliding plates 3, and carrying on ships on the steel cross beam 9. The wooden slide plate 3 located on the side of shanghai has the lugs 4 facing inward, and the wooden slide plate 3 located on the side of rime has the two lugs 4 mounted thereon facing outward. Two wooden sliding plates 3 are arranged on the slideway at each side, and the wooden sliding plates 3 at one side and the wooden sliding plates 3 are bound and connected by a fastening steel wire rope 8 with the diameter of 24 mm penetrating through a preset lifting lug 4 on the wooden sliding plates 3.
Seventhly, before the ship is launched, connecting a lifting lug 4 of the wooden sliding plate 3 positioned on one side in the Shanghai direction with one end of a first steel wire rope 5, and connecting the other end of the first steel wire rope 5 with a cable pile positioned on the side of the Shanghai direction; a lifting lug 4 positioned on the inner side of the wooden sliding plate 3 on one side of the freezing direction is connected with one end of a second steel wire rope 6, and the other end of the second steel wire rope 6 is connected with a mooring bollard positioned on the broadside on one side of the Shanghai direction; the lifting lug 4 positioned on the outer side of the wooden sliding plate 3 on one side of the rime direction is connected with one end of a third steel wire rope 7, the other end of the third steel wire rope 7 is positioned on a bollard on the broadside on one side of the rime direction, the first steel wire rope 5, the second steel wire rope 6 and the third steel wire rope 7 are respectively arranged in two numbers, and the diameter of each steel wire rope is 46 mm. An external force is applied to launch the vessel along the inclined ramp. In the step, the wooden sliding plate 3 positioned on one side of the Wurime direction is fixed in position through the first steel wire rope 5 and the second steel wire rope 6, so that the phenomenon that the ship body is turned over when floating is avoided, and the ship body is prevented from being damaged.
And step eight, after the ship is launched, the steel beam 9 and the wooden sliding block enter the water along with the ship, one end of the first steel wire rope 5 connected with the bollard is detached and delivered to a tug boat, the floated wooden sliding plate 3 is pulled out from the bottom of the ship to be recovered, one end of the second steel wire rope 6 connected with the bollard is detached and thrown into the water, one end of the third steel wire rope 7 connected with the bollard is detached and connected with the tug boat, and the floated wooden sliding plate 3 is pulled out from the bottom of the ship to be recovered.
Although the present invention has been described in detail with respect to the above embodiments, it will be understood by those skilled in the art that modifications or improvements based on the disclosure of the present invention may be made without departing from the spirit and scope of the invention, and these modifications and improvements are within the spirit and scope of the invention.
Claims (8)
1. A ship building and launching method suitable for winter is characterized by comprising the following steps:
step one, preparing lubricating grease, wherein the lubricating grease consists of 10% of rosin and 90% of white wax in percentage by mass;
cleaning and drying the surfaces of the wooden sliding plate and the slideway to be coated with the grease;
removing burrs on the surfaces of the wooden sliding plate and the slideway, and grinding the surfaces to be flat;
heating the lubricating grease to be liquid, and pouring and coating the surfaces of the wooden sliding plate and the slideway layer by layer according to the sequence of temperature from high to low;
welding lifting lugs on the side parts of the wooden sliding plates, wherein two lifting lugs are welded on one side of each wooden sliding plate;
step six, mounting a support steel frame on the ship table board, welding the support steel frame between two slideways, respectively placing two wooden sliding plates on the slideways, placing a steel beam on the support steel frame, placing two ends of the steel beam on the wooden sliding plates, and carrying a ship on the steel beam;
before the ship is launched, a lifting lug is arranged on one side, close to the supporting steel frame, of the wooden sliding plate on one downstream side, one end of a first steel wire rope is connected to the lifting lug, and the other end of the first steel wire rope is connected with a cable pile on the side of the ship on the downstream side; lifting lugs are arranged on two sides of the wooden sliding plate on the upstream side, the lifting lug on one side close to the supporting steel frame is connected with one end of a second steel wire rope, the other end of the second steel wire rope is connected with the mooring pile on the side of the downstream side, the lifting lug on one side far away from the supporting steel frame is connected with the mooring pile on the side of the upstream side, and the ship is launched along the inclined slide way;
and step eight, after the ship is launched, the steel beam and the wooden sliding block enter the water along with the ship, one end of the first steel wire rope connected with the bollard is detached and is delivered to a tug, the floated wooden sliding plate is dragged out from the bottom of the ship to be recycled, one end of the second steel wire rope connected with the bollard is detached, one end of the third steel wire rope connected with the bollard is detached and connected with the tug, and the floated wooden sliding plate is dragged out from the bottom of the ship to be recycled.
2. The method for building and launching a ship in winter as claimed in claim 1, wherein in the second step, when cleaning and drying the wooden sliding plate and the slideway, the drying is performed by using the fireman's tap for three times, and the cleaning is performed while drying.
3. The ship building and launching method for the winter season as claimed in claim 1, wherein in the fourth step, the flow coating is performed in three layers, the temperature of the grease liquid is 150 degrees celsius when the first layer is applied, the temperature of the grease liquid is 130 degrees celsius when the second layer is applied, the temperature of the grease liquid is 120 degrees celsius when the third layer is applied, and the allowable temperature error of each layer is plus or minus 5 degrees celsius when the layer is applied.
4. A method of constructing a ship for use in winter as claimed in claim 3 wherein the grease is applied by means of oil pots, the two pots being alternated in a set, the application being not suspended.
5. A method for constructing a ship and launching it in winter as claimed in claim 3, wherein the grease is applied by coating the upper layer after the front layer is dried and hardened before coating, and the total thickness of the three layers is 3-5 mm after coating.
6. A method for constructing a ship and launching it in winter as claimed in claim 3, wherein the range of bubbles on the surface of the grease at the time of coating is controlled to be less than 5% of the occurrence rate of bubbles having a diameter of less than 10mm per square meter, and bubbles having a diameter of more than 10mm are not allowed to occur.
7. The ship building and launching method for winter season according to claim 1, wherein in the sixth step, two wooden sliding plates are provided on each side of the slipway, and the wooden sliding plate on one side are bound and connected by a fastening steel wire rope with a diameter of 24 mm penetrating through a preset lifting lug on the wooden sliding plate.
8. The method for constructing a ship and launching the ship in winter as claimed in claim 1, wherein the first, second and third wire ropes are provided in two numbers, and each wire rope has a diameter of 46 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010375272.5A CN112249258A (en) | 2020-05-07 | 2020-05-07 | Ship building and launching method suitable for winter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010375272.5A CN112249258A (en) | 2020-05-07 | 2020-05-07 | Ship building and launching method suitable for winter |
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| Publication Number | Publication Date |
|---|---|
| CN112249258A true CN112249258A (en) | 2021-01-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010375272.5A Pending CN112249258A (en) | 2020-05-07 | 2020-05-07 | Ship building and launching method suitable for winter |
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| Country | Link |
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| CN (1) | CN112249258A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114670991A (en) * | 2022-04-28 | 2022-06-28 | 黄山联合应用技术发展有限公司 | Launching slideway lubricating layer protection device for shipborne denial system |
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|---|---|---|---|---|
| JPS58150046U (en) * | 1982-03-31 | 1983-10-07 | 銘建工業株式会社 | Shipbuilding scaffolding boards made from thinned wood |
| DE3938188A1 (en) * | 1989-07-25 | 1991-02-07 | Schiffs Und Bootswerft Fr Schw | Hauling boat onto slipway - involves machine with two endless chains with hooks to grip boat |
| CN1857962A (en) * | 2006-05-24 | 2006-11-08 | 渤海船舶重工有限责任公司 | Large ship gravity type launching slide plate and launching method |
| CN2843999Y (en) * | 2005-12-06 | 2006-12-06 | 广州广船国际股份有限公司 | Launching equipment of ship |
| CN201685998U (en) * | 2010-04-09 | 2010-12-29 | 中船澄西船舶修造有限公司 | Connecting structure of anchor chains and slide plates |
| KR20110008579U (en) * | 2010-03-02 | 2011-09-08 | 에스티엑스조선해양 주식회사 | Launching system for ships |
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2020
- 2020-05-07 CN CN202010375272.5A patent/CN112249258A/en active Pending
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|---|---|---|---|---|
| JPS58150046U (en) * | 1982-03-31 | 1983-10-07 | 銘建工業株式会社 | Shipbuilding scaffolding boards made from thinned wood |
| DE3938188A1 (en) * | 1989-07-25 | 1991-02-07 | Schiffs Und Bootswerft Fr Schw | Hauling boat onto slipway - involves machine with two endless chains with hooks to grip boat |
| CN2843999Y (en) * | 2005-12-06 | 2006-12-06 | 广州广船国际股份有限公司 | Launching equipment of ship |
| CN1857962A (en) * | 2006-05-24 | 2006-11-08 | 渤海船舶重工有限责任公司 | Large ship gravity type launching slide plate and launching method |
| KR20110008579U (en) * | 2010-03-02 | 2011-09-08 | 에스티엑스조선해양 주식회사 | Launching system for ships |
| CN201685998U (en) * | 2010-04-09 | 2010-12-29 | 中船澄西船舶修造有限公司 | Connecting structure of anchor chains and slide plates |
| CN206374948U (en) * | 2017-01-17 | 2017-08-04 | 浙江国际海运职业技术学院 | A kind of launching gear for building berth |
| CN108192697A (en) * | 2018-01-05 | 2018-06-22 | 扬帆集团股份有限公司 | Hull launching grease formula |
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| Title |
|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114670991A (en) * | 2022-04-28 | 2022-06-28 | 黄山联合应用技术发展有限公司 | Launching slideway lubricating layer protection device for shipborne denial system |
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Application publication date: 20210122 |