CN114954847B

CN114954847B - Life raft and thermal assembly process thereof

Info

Publication number: CN114954847B
Application number: CN202210603825.7A
Authority: CN
Inventors: 陶旭; 刘少华; 张泽全
Original assignee: Ningbo Zhenhua Lifesaving Equipment Co ltd
Current assignee: Ningbo Zhenhua Lifesaving Equipment Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2024-02-20
Anticipated expiration: 2042-05-30
Also published as: CN114954847A

Abstract

The application discloses life raft and thermal assembly technology thereof, including the raft end, go up the float tire and float the tire down and cooperate around the raft end connection formation raft body, be provided with the tarpaulin post that is used for supporting the tent on the raft body, the tip of tarpaulin post sets up profile modeling tarpaulin post foot or sets up profile modeling tarpaulin post foot and tarpaulin post quick-operation joint piece and raft body coupling simultaneously, the tarpaulin is suitable for through tarpaulin post quick-operation joint piece and raft body quick assembly disassembly connection, raft body one side is provided with the non-inflatable and climbs the raft platform, the non-inflatable is climbed the raft platform and is suitable for helping personnel to get into the raft body, this life raft uses TPU combined material to make and forms, abandon traditional rubber manual glue mode of making, use thermal assembly technology, be difficult for revealing, quality and outward appearance are unified more stable, the production process is more environmental protection, difficult production pollution.

Description

Life raft and thermal assembly process thereof

Technical Field

The application relates to the technical field of life-saving equipment, in particular to a life raft and a thermal assembly process thereof.

Background

The life raft refers to a boat without self-propulsion capability for life saving on a ship. The life raft is provided with a certain amount of food and fresh water for passengers to drift and rescue on the sea, and the life raft can be divided into a rigid life raft and an inflatable life raft according to the structural form. The inflatable life raft is generally made of rubber materials, an upper floating tire and a lower floating tire are used for providing buoyancy, and a tent is made of double-layer waterproof nylon cloth, so that the inflatable life raft is a small raft with the tent, such as a round shape, an oval shape or a polygonal shape, and the like, inflated by gas.

In the domestic and international life raft market, the inflatable life raft is mainly made of rubber cloth as main material and is adhered by glue. The device is characterized in that the device is less in investment, and workers can carry out production after simple training.

However, existing liferafts suffer from the following drawbacks: the whole manufacturing process mainly adopts manual operation, and the quality and the appearance of the produced product are completely dependent on the proficiency and the working capacity of workers, so that the quality and the appearance of the product cannot be ensured to be uniform; on the other hand, as the glue is adhered in the whole production process, the quality of the glue and the fit degree with the rubberized fabric are easy to directly influence the quality of the product, and meanwhile, the glue can cause certain influence on the health of workers.

Disclosure of Invention

It is an object of the present application to provide a life raft with a more stable quality and appearance, which is environmentally friendly and pollution free in the production process, and a process for its thermal assembly.

Another object of the present application is to provide a non-inflatable raft boarding platform for a life raft which is environmentally friendly, has high structural strength, does not require inflation and does not lose the boarding function after breakage.

It is a further object of the present application to provide a quick connector for a canopy post of a liferaft enabling a quick detachable connection between a float and the canopy post.

It is a further object of the present application to provide a valve element structure for a life raft which is structurally stable, strong and not prone to leakage.

It is a further object of the present application to provide a contoured canopy base of a liferaft which is easy to install, and which is capable of improving the strength of the connection between the float and the canopy and the connection tightness.

In order to achieve the above purpose, the technical scheme adopted in the application is as follows: the utility model provides a life raft, includes at the bottom of the raft, go up the float child and float the child down, go up the float child with the cooperation of float child encircles down the raft is connected at the bottom of the raft and is formed the raft body, be provided with the tarpaulin post that is used for supporting the tent on the raft body, the tip of tarpaulin post sets up profile modeling tarpaulin column foot or sets up tarpaulin column quick connector or sets up simultaneously profile modeling tarpaulin column foot with tarpaulin column quick connector with the raft body coupling, the tarpaulin column is suitable for through tarpaulin column quick connector with the quick assembly disassembly of the raft body is connected, raft body one side is provided with the non-inflatable and climbs the raft platform, the non-inflatable is climbed the raft platform and is suitable for helping personnel get into the raft body.

As an improvement, the profiling tent column foot comprises a column part, the tent column is suitable for being sleeved on the column part, a profiling groove is formed in the bottom of the column part, the upper floating tire is suitable for being embedded in the profiling groove, the periphery of the profiling groove extends outwards to form a foot disc part, and the foot disc part is suitable for being attached to the outer surface of the upper floating tire; the outer side surface of the top of the columnar part is provided with a guide inclined surface along the circumferential direction, and the included angle between the guide inclined surface and the columnar part is alpha which is more than or equal to 0.5 degrees and less than or equal to 1.5 degrees; the foot plate portions have the same width projected on a plane perpendicular to the columnar portions.

As an improvement, the quick connector for the awning post comprises a connector and an insert body, wherein a gas channel is formed in the connector, the insert body is internally contracted to form a clamping part, clamping grooves matched with the clamping part are formed in two ends of the connector along the circumferential direction respectively, the insert body is suitable for being sleeved with the two ends of the connector in a clamping manner, and the insert body is suitable for being connected with the surface of the raft body or the awning post.

As an improvement, the plug-in body comprises a plug-in framework and a plug-in coating layer, wherein the plug-in coating layer is arranged on the plug-in framework in a covering manner, and is suitable for being connected with the surface of the raft body or the awning column in a heat sealing manner; the outer side of the plug-in framework is provided with a connecting ring, and the plug-in coating layer is suitable for being coated on the connecting ring and is in heat sealing connection with the surface of the raft body or the awning column; a one-way seal is disposed within the gas passage and is adapted to cause the gas within the gas passage to flow in one direction.

As an improvement, the non-inflatable boarding and raft platform comprises a platform main body, a connecting base and a platform sling, wherein the connecting base is connected with the lower floating tire and the platform main body, the platform sling is connected with the upper floating tire and the platform main body, and the connecting base and the platform sling are suitable for enabling the platform main body to be parallel to the raft body.

As an improvement, the connecting base comprises a first fixed end and a second fixed end, wherein an arc-shaped groove is arranged on the first fixed end and is suitable for being attached and fixed to the outer surface of the lower floating tire, a clamping groove is arranged on the second fixed end, and one side of the platform main body is installed and fixed in the clamping groove; the upper surface of one side, far away from the raft body, of the platform main body is provided with a containing cavity, a connector is arranged in the containing cavity, and the platform sling is connected with the connector; at least one groove is transversely formed in the upper surface of the platform main body.

As an improvement, a connecting valve seat is arranged on the raft body, a valve seat coating layer is covered on the outer side of the connecting valve seat, a connecting air valve is arranged on the connecting valve seat, and the valve seat coating layer is suitable for being connected with the surface of the raft body or the awning column in a heat sealing mode.

As an improvement, a valve ring is arranged around the connecting valve seat, a plurality of reinforcing holes are formed in the valve ring along the radial direction, the valve seat coating layer is suitable for passing through the outer end of the valve ring and the reinforcing holes and connecting and coating two sides of the valve ring, and when the air valve is mounted on the connecting valve seat, the air valve is suitable for clamping the valve seat coating layer with the valve ring; at least one coating groove is formed in the outer side of the connecting valve seat along the circumferential direction, and the valve seat coating layer is suitable for being filled into the coating groove.

A process for thermally assembling a liferaft comprising the steps of:

s100, blanking, namely taking a nylon cloth composite TPU material, and carrying out scribing and cutting treatment on a blanking machine to form a material sheet, and then finishing and storing the material sheet;

s200, installing the accessory, fixing the accessory and the material sheet in a welding mold, starting a 7.5KW high-frequency heat sealing machine, adjusting the current of the heat sealing machine to 0.25-0.5A, keeping for 4-6S, and firmly welding the accessory and the material sheet in a heat sealing way;

s300, splicing the material sheets, and sequentially and thermally splicing the upper floating tire, the lower floating tire, the raft bottom and the awning post along edges by using a hot air heat sealing machine;

s400, assembling a raft body, namely moving the upper floating tire, the lower floating tire and the raft bottom to a rotary working table surface for alignment and fixation, sequentially moving the aligned corners to the lower part of a 7.5KW high-frequency heat sealing machine for heat sealing firmly, sequentially moving the heat sealing edges between the upper floating tire, the lower floating tire and the raft bottom to the lower part of the 35KW high-frequency heat sealing machine for heat sealing connection, sleeving the tent column on a knife edge mould, starting the heat sealing machine after alignment to heat seal the foot opening of the tent column to a profiling tent column foot or a tent column quick connecting piece, then rotating the knife edge mould for 180 degrees for heat sealing again, heat sealing the foot opening of the other tent column by using the same method, and finally installing accessories to complete the assembly of the life raft;

s500, accommodating, namely exhausting the air in the raft by using an exhaust fan after the assembly, stacking the air in an inflatable unfolding mode, binding the air by using strings, adding scratch-resistant materials into the raft shells, loading the bound life raft into the raft shells, and loading sealing rubber strips at joints of the raft shells.

According to an embodiment of the present invention, the step S400 includes the steps of:

s410, heat insulation protection, wherein heat insulation paper is arranged between the upper floating tire and the lower floating tire and between the lower floating tire and the raft bottom before the tent poles are thermally sealed;

s420 air tightness detection is carried out, the upper floating tire and the lower floating tire are required to be inflated before the raft body is connected, the whole raft body is required to be inflated after the raft body is connected, a pressure meter is connected to an air supplementing and exhausting valve after the raft body is inflated to detect the air pressure in the upper floating tire and the lower floating tire, an air charging bottle supplements the air pressure to the pressure column of the pressure meter through an air inlet one-way valve to be 100mmHg high, the pressure reduction is not more than 5% after the air pressure is kept for 30min, and the leakage position is required to be checked and remedied if the air pressure is more than 5%.

Compared with the prior art, the beneficial effect of this application lies in:

1. the life raft is made of TPU composite materials, the materials are degradable, the life raft is safer and more environment-friendly, the traditional manual rubber glue making mode is abandoned, the production process is more environment-friendly, pollution is not easy to generate, the heat assembly process is used, leakage is not easy to occur, the production and processing process is completed by a machine, the production efficiency is higher, and the quality and the appearance are more unified and stable.

2. The tent column and the raft body of the life raft can be matched and connected through the profiling tent column foot or the tent column quick connecting piece, the installation is more convenient, the connection strength and the connection sealing performance between the assembled tent column and the raft body can be greatly improved, the assembly difficulty can be reduced, the assembly efficiency can be improved, and the profiling tent column foot or the tent column quick connecting piece can be applied to a thermal assembly process without using additional tools or equipment for assembly.

3. The life raft has the advantages that the life raft platform is provided with the non-inflatable boarding platform, the production efficiency is high, the life raft and the main air chamber are mutually independent, the air inflation is not needed, the air inlet one-way valve and the air exhaust valve are omitted, the connection is convenient and quick, the boarding platform is a rigid plastic body, the risk of losing the function of the boarding platform after breakage is avoided, the whole product and the assembly do not need to use one drop of glue, and the life raft is more environment-friendly due to the fact that degradable plastics are used.

Drawings

FIG. 1 is an overall structural view according to a preferred embodiment of the present application;

FIG. 2 is a right side partial structural cross-sectional view according to a preferred embodiment of the present application;

FIG. 3 is a partial structural cross-sectional view of the front side according to a preferred embodiment of the present application;

FIG. 4 is a top view of a contoured post foot mounting structure according to one preferred embodiment of the present application;

FIG. 5 is a cross-sectional view taken along A-A in FIG. 4 in accordance with a preferred embodiment of the present application;

FIG. 6 is a cross-sectional view taken along B-B in FIG. 4 in accordance with a preferred embodiment of the present application;

FIG. 7 is an internal structural view of a canopy post quick connector according to a preferred embodiment of the present application;

FIG. 8 is an internal structural view of a canopy post quick connector with a one-way seal according to another preferred embodiment of the present application;

fig. 9 is a connection structure view of a non-inflatable raft platform according to a preferred embodiment of the present application;

fig. 10 is a top view of a non-inflatable raft platform according to a preferred embodiment of the present application;

FIG. 11 is a view of the connection structure of a safety valve according to a preferred embodiment of the present application;

FIG. 12 is a view of the connection structure of the one-way intake valve according to a preferred embodiment of the present application;

FIG. 13 is a view of the connection structure of a canopy post check valve according to a preferred embodiment of the present application;

FIG. 14 is a view of the connection structure of the exhaust check valve according to a preferred embodiment of the present application;

fig. 15 is a view showing a connection structure of the make-up and exhaust valve according to a preferred embodiment of the present application.

In the figure: 1. a raft body; 11. a raft bottom; 111. a water accumulation ditch; 12. a canopy post; 13. tent; 131. a lookout window; 132. a reflective tape; 133. illuminating a position indicating lamp; 14. a balance water bag; 15. a head cable; 16. sea anchors; 17. boarding raft and pulling ladder; 2. floating the tire; 3. a lower float tyre; 4. profiling tent pole feet; 41. a columnar portion; 411. a simulated groove; 42. a foot plate portion; 5. a tent pole quick connector; 51. a connecting body; 511. a gas channel; 512. a clamping groove; 513. a guide chute; 514. a partition plate; 515. sealing grooves; 52. an insert body; 521. a clamping part; 522. a plug-in skeleton; 5221. a connecting ring; 523. an insert cladding layer; 53. a seal ring; 54. a one-way seal; 541. a valve core; 542. a sealing head; 6. a non-inflatable raft platform; 61. a platform body; 611. a cavity; 6111. a connector; 612. a groove; 62. the base is connected; 621. a first fixed end; 6211. an arc-shaped groove; 622. a second fixed end; 6221. a clamping groove; 63. a platform sling; 7. connecting with a valve seat; 71. a valve seat coating; 72. a valve ring; 721. reinforcing holes; 722. and a coating groove.

Detailed Description

The present application will be further described with reference to the specific embodiments, and it should be noted that, on the premise of no conflict, new embodiments may be formed by any combination of the embodiments or technical features described below.

In the description of the present application, it should be noted that, for the azimuth terms such as terms "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the azimuth and positional relationships are based on the azimuth or positional relationships shown in the drawings, it is merely for convenience of describing the present application and simplifying the description, and it is not to be construed as limiting the specific protection scope of the present application that the device or element referred to must have a specific azimuth configuration and operation, as indicated or implied.

It should be noted that the terms "first," "second," and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order.

The terms "comprises" and "comprising," along with any variations thereof, in the description and claims of the present application are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements that are expressly listed or inherent to such process, method, article, or apparatus.

The application is further described below with reference to the accompanying drawings:

as shown in fig. 1 to 15, a preferred embodiment of the present application comprises a raft bottom 11, an upper float 2 and a lower float 3, wherein the upper float 2 and the lower float 3 are connected around the raft bottom 11 to form a raft body 1, a canopy 12 for supporting a tent 13 is arranged on the raft body 1, a water accumulation ditch 111 is arranged at the joint of the peripheral edge of the raft bottom 11 and the lower float 3, a certain amount of water accumulation can be contained, slippage caused by a small amount of water flow splashing into the life raft is avoided, the raft body 1 preferably adopts an octagonal structure, a balance is achieved between structural stability and production assembly difficulty, at least one balance water bag 14 is arranged at the bottom of the raft body 1, a head cable 15 is arranged between the non-inflatable boarding platform 6 and the raft body 1, a safety knife, a spare bag, a radar transponder and an inflatable bottle are arranged on the outer side of the raft body 1, sea anchors 16 are connected on the outer side of the raft body 1, an inner rope is arranged on the inner side of the raft body 1, a tent ladder 17 is arranged on the side of the non-inflatable boarding platform 6, a light reflection window 131 is arranged on the side of the raft body 1, and a light reflection lamp is arranged on the top of the life raft body 13, and the light is suitable for the light reflection device 133.

The tip of tarpaulin column 12 sets up profile modeling tarpaulin column foot 4 or sets up tarpaulin column quick connector 5 or sets up profile modeling tarpaulin column foot 4 and tarpaulin column quick connector 5 respectively, tarpaulin column 12 is suitable for through profile modeling tarpaulin column foot 4 and raft body 1 fixed connection, tarpaulin column 12 is suitable for through tarpaulin column quick connector 5 and raft body 1 quick assembly disassembly connection, profile modeling tarpaulin column foot 4 and tarpaulin column quick connector 5 can be selected according to the combination of demand for use, can promote joint strength and connection leakproofness between tarpaulin column 12 and the raft body 1 through profile modeling tarpaulin column foot 4 and tarpaulin column quick connector 5, reduce the equipment degree of difficulty, need not to use extra instrument or equipment to assemble, increase flexibility and the convenience of production equipment.

When the large-scale canopy post 12 of planer-type is made, because the canopy post 12 is great and comprises double-column and intermediate connection post, make into a whole too huge, in order to reduce the equipment degree of difficulty of raft body 1, can consider to make raft body 1 and divide the composition part to assemble, and each part of assembling like double-column or intermediate connection post can connect through the canopy post quick connect unit 5.

As shown in fig. 4 to 6, the profiling tent pole base 4 includes a column portion 41, the tent pole 12 is suitable for being sleeved on the column portion 41, a profiling groove 411 is formed at the bottom of the column portion 41, the upper floating tire 2 is suitable for being embedded and installed in the profiling groove 411, the periphery of the profiling groove 411 extends outwards to form a foot plate portion 42, the foot plate portion 42 is suitable for being attached to the outer surface of the upper floating tire 2, the traditional rubber raft floating tire and the tent pole 12 are made of rubber materials, the rubber raft floating tire and the tent pole 12 can be bonded through glue, the rubber raft can be cylindrical after the floating tire and the tent pole 12 are inflated and formed, matching can be realized through lofting, the glue is easy to bond, but a new TPU material is welded through a customized special die, accurate positioning is difficult to achieve in the thermal assembly process of intersecting the cylinder, the profiling tent pole base 4 can simply and rapidly perform positioning connection combination on the tent pole 12 and the upper floating tire 2 through the column portion 41 and the profiling groove 411, the method is suitable for the thermal assembly process, the assembly difficulty is reduced, and the sealing and the connection strength can be improved.

The top lateral surface of column portion 41 is provided with the guide inclined plane along circumference, and the contained angle between guide inclined plane and the column portion 41 is alpha, and is 0.5 is less than or equal to alpha and is less than or equal to 1.5, and alpha is preferably 1, and tarpaulin column 12 can be along the light cover of guide inclined plane establishing to column portion 41, also can make the connection between tarpaulin column 12 and the column portion 41 more convenient when the heat seal is connected, can laminate column portion 41 completely after tarpaulin column 12 bottom pressfitting to the guide inclined plane, is difficult to be peeled off.

The width of the projection of the foot plate portion 42 on the plane perpendicular to the columnar portion 41 is the same, so that the width of the foot plate portion 42 on both sides of the profiling groove 411 is larger, the area when connecting with the upper float 2 is larger, and the connection stability is improved.

As shown in fig. 7, the tent pole quick connector 5 includes a connector 51 and an insert 52, a gas channel 511 is formed in the connector 51, the insert 52 is inwardly contracted to form a clamping portion 521, two ends of the connector 51 are respectively provided with clamping grooves 512 along the circumferential direction, which are matched with the clamping portion 521, the insert 52 is suitable for being clamped and sleeved at two ends of the connector 51, the insert 52 is suitable for being connected with the surface of the raft 1 or the tent pole 12, the tent pole quick connector 5 can be used as an insert for quickly connecting the tent pole 12 and a floating tire, gas sealing between the floating tire and the tent pole 12 is ensured, and quick installation and disassembly can be performed.

The plug-in body 52 includes plug-in skeleton 522 and plug-in coating 523, and the plug-in coating 523 covers and sets up on plug-in skeleton 522, preferably uses the TPU material, and plug-in coating 523 is suitable for the surperficial heat seal connection with raft body 1 or tarpaulin column 12, and this structure can make the plug-in body 52 need not to adhere with raft body 1 or tarpaulin column 12 through glue, satisfies the demand of heat assembly technology.

The outside of the plug-in skeleton 522 is provided with the go-between 5221, and the plug-in coating 523 is suitable for cladding to go-between 5221 and be connected with the surface heat seal of raft body 1 or tarpaulin column 12, and the go-between 5221 can increase the stability and the structural strength that plug-in coating 523 is connected with raft body 1 or tarpaulin column 12, is difficult for taking place to break away from.

The outer sides of the two end parts of the connector 51 are provided with guide chute 513, and the clamping part 521 of the plug-in body 52 can enter the clamping groove 512 through the guide chute 513, so that the installation connection between the connector 51 and the plug-in body 52 is easier.

The middle of the connecting body 51 is provided with the baffle 514, and the baffle 514 is suitable for blocking the plug-in components body 52 that the connecting body 51 both ends are connected, can play spacing effect, prevents the mutual contact collision of plug-in components body 52 at both ends, increases the stability of tarpaulin column quick connector 5, and the baffle 514 can also be used for installing and connecting one-way sealing member 54, conveniently carries out the one-way circulation control of air current passageway.

The clamping part 521 is preferably located at the outer end of the insert body 52, the insert coating layer 523 coats the clamping part 521 from the outer end of the insert body 52, and since the insert coating layer 523 is made of a flexible material, the insert coating layer 523 can play a role in guiding to a certain extent, helps the clamping part 521 at the outer end of the insert body 52 separate from the clamping groove 512, facilitates the quick assembly and disassembly of the insert body 52 and the connector 51, and can also adjust the clamping force between the clamping part 521 and the clamping groove 512 by changing the thickness of the insert coating layer 523 at the outer end of the insert body 52, thereby changing the connection strength of the insert body 52 and the connector 51.

At least one sealing groove 515 is formed in the two ends of the connector 51 along the circumferential direction, sealing rings 53 are embedded in the sealing grooves 515, the sealing rings 53 are suitable for sealing gaps between the connector 51 and the plug-in unit 52, two sealing grooves 515 are preferably used, a better sealing effect can be obtained, and the leakage probability caused by abrasion due to movement between the connector 51 and the plug-in unit 52 is reduced.

As shown in fig. 8, a unidirectional sealing member 54 may be selectively disposed in the gas channel 511 in another preferred embodiment of the present application, where the unidirectional sealing member 54 is adapted to enable the gas in the gas channel 511 to flow in one direction, the unidirectional sealing member 54 includes a valve core 541 and a sealing head 542, the sealing head 542 is made of rubber, the valve core 541 is slidably disposed in the gas channel 511 along the direction of the gas channel 511, and is preferably mounted on the partition 514, the sealing head 542 is connected with the valve core 541, the sealing head 542 is adapted to slide along with the valve core 541 and seal one end of the gas channel 511, and the connector 51 provided with the unidirectional sealing member 54 needs to pay attention to its directionality when connecting with the insert 52, so as to ensure that the gas in the existing air-filled air-cushion tire or tarpaulin column 12 smoothly enters the airless air-cushion-or tarpaulin-column 12 along the unidirectional valve formed by the cooperation of the unidirectional sealing member 54 and the connector 51, instead of being blocked.

When the life raft is inflated, the air-filled float or canopy 12 enters the float or canopy 12 connected with the air-filled float or canopy under the action of air pressure, and the sealing ring 53 between the connector 51 and the insert 52 ensures that air in the canopy 12 cannot leak out through the gap between the connector 51 and the insert 52.

As shown in fig. 9 to 10, a non-inflatable boarding platform 6 is provided at one side of the raft body 1, the non-inflatable boarding platform 6 is adapted to assist a person in entering the raft body 1, the non-inflatable boarding platform 6 includes a platform main body 61, a connection base 62 and a platform sling 63, the connection base 62 is connected to the lower float 3 and the platform main body 61, the platform sling 63 is connected to the upper float 2 and the platform main body 61, and the connection base 62 and the platform sling 63 are adapted to make the platform main body 61 parallel to the raft body 1.

The connection base 62 comprises a first fixing end 621 and a second fixing end 622, the first fixing end 621 is provided with an arc-shaped groove 6211, the arc-shaped groove 6211 is suitable for being fitted and fixed on the outer surface of the lower float 3, the second fixing end 622 is provided with a clamping groove 6221, and one side of the platform main body 61 is installed and fixed in the clamping groove 6221; the upper surface of one side of the platform main body 61 far away from the raft body 1 is provided with a cavity 611, a connector 6111 is arranged in the cavity 611, the connector 6111 is hidden in the cavity 611, the injury caused by collision when the raft is stepped on is avoided, and the platform hanging strip 63 is connected with the connector 6111; at least one groove 612 is transversely formed in the upper surface of the platform main body 61, the structural strength of the platform main body 61 can be increased through the groove 612, weight reduction is performed at the same time, the groove can be used as a grabbing point when a raft is climbed, and the difficulty of boarding the raft is reduced.

When the life raft is inflated, the upper floating tire 2 and the lower floating tire 3 are inflated to bring the connecting base 62 on the lower floating tire 3 as a supporting point, under the action of gravity, the hanging strips are pulled to keep balance, the non-inflatable boarding raft platform 6 is molded by adopting a thermoplastic mold, the production efficiency is high, the main air chamber in the raft body 1 is independently opened, the air inflation is not needed, the air inlet one-way valve and the air outlet valve are omitted, the connection is convenient and quick, the boarding raft platform is a rigid plastic body, the risk of losing the function of the boarding raft platform after breakage does not exist, a drop of glue is not needed in the whole product and assembly process, and the whole life raft is made of degradable plastics, so that the life raft is more environment-friendly.

As shown in fig. 11 to 15, a connecting valve seat 7 is arranged on the raft body 1 or the awning column 12, a valve seat coating layer 71 is covered on the outer side of the connecting valve seat 7, a connecting air valve is suitable for being installed on the connecting valve seat 7, and the valve seat coating layer 71 is suitable for being in heat sealing connection with the surface of the raft body 1 or the awning column 12.

In a life raft made of rubber materials, air valves such as a safety valve, an air supplementing and exhausting valve and the like used in an air charging system can be directly arranged on a floating tire in a threaded connection mode, and airtight can be ensured by arranging a sealing ring, but the sealing of the air valves such as the safety valve, the air supplementing and exhausting valve and the like is needed to be an alternative method because the TPU does not have the characteristic of rubber, the common method is that a valve seat and the like of the safety valve are directly welded on the floating tire of the life raft, if a seat of the safety valve and the like is directly made of TPU materials, the sealing is feasible with the floating tire and the like, but because the rigidity of the TPU materials is insufficient and the seat is directly made of TPU materials, the loosening condition possibly occurs, and the valve seat is designed into a structure which is covered by a plastic framework, so that the problem of welding with the floating tire is solved, and the problem of insufficient rigidity of the TPU itself is solved.

The valve seat 7 is provided with the valve ring 72 all around, a plurality of reinforcing holes 721 have been seted up along circumference to the valve ring 72, the valve seat coating 71 is suitable for from valve ring 72 outer end and reinforcing hole 721 in through and connect cladding valve ring 72 both sides, when the pneumatic valve is installed on connecting the valve seat 7, the pneumatic valve is suitable for and presss from both sides tight valve seat coating 71 with valve ring 72, the design of reinforcing hole 721 and pneumatic valve and valve ring 72 cooperation carry out the centre gripping fixedly to valve seat coating 71, can increase the peel strength of valve seat coating 71, make it be difficult for drawing because of the atress and take place to break away from with the valve body.

At least one coating groove 722 is formed in the outer side face of the connecting valve seat 7 and the plug-in body 52 along the circumferential direction, the valve seat coating layer 71 and the plug-in coating layer 523 are suitable for being filled into the coating groove 722, the cross section of the coating groove 722 is preferably rectangular, the valve seat coating layer 71 and the plug-in coating layer 523 can increase the coating area through the coating groove 722, so that the stress area is increased, the larger the number of the coating grooves 722 is, the larger the stress area is, the coating groove 722 can change the stress direction of the valve seat coating layer 71 and the plug-in coating layer 523 at the same time, so that the valve seat coating layer 71 and the plug-in coating layer 523 can have good coating connection stability in the radial direction and the axial direction of the connecting body 51, and the probability that the plug-in coating layer 523 is separated from the plug-in body 52 under the influence of external force is reduced.

The air valve comprises a safety valve, an air inlet one-way valve, a awning column one-way valve, an air outlet one-way valve, an air supplementing and exhausting valve, a safety valve and other accessories.

The safety valve is used for ensuring that the air pressure in the floating tire cannot be over-pressure, automatically opening and releasing the pressure when the air pressure is over-pressure, automatically closing the air pressure after the air pressure reaches the set pressure, ensuring the air pressure in the floating tire and preventing the over-pressure.

The air inlet one-way valve is used for connecting the air charging bottle and the one-way channel valve of the floating tire, only allows air to be charged into the floating tire, is reversely in a sealing state, and can bear the high-pressure charging state in the steel bottle.

The awning column one-way valve is used for forming an independent air chamber after the awning column 12 of the life raft is molded, and air can only enter the awning column 12 from a floating tire and is reversely sealed.

The air exhaust check valve is used for exhausting the air chamber, and when the air chamber is provided with the awning column check valve to form a state that air can not enter or exit only, the air chamber can be exhausted by using the air exhaust check valve.

The air supplementing and exhausting valve has the functions of the awning pillar one-way valve and the air exhausting one-way valve, and can supplement air for the floating tire and exhaust air.

TPU composites have unparalleled advantages over rubber materials, mainly representing the following aspects: 1. because of the hot melt of the TPU composite material, the manufacture of the life raft can be operated by a machine, so that the production intensity of workers is reduced, and the production efficiency is increased; 2. because the TPU composite material has no pungent smell of rubber and glue, the life raft cannot influence the health of workers in the production process; 3. because the TPU composite material can be degraded, and the rubber material has no such function, the TPU material is a safe and environment-friendly material which is recommended to use at present.

The life raft is made of TPU composite materials, the materials are degradable, the life raft is safer and more environment-friendly, the traditional manual rubber glue making mode is abandoned, the production process is more environment-friendly, pollution is not easy to generate, the heat assembly process is used, leakage is not easy to occur, the production and processing process is completed by a machine, the production efficiency is higher, and the quality and the appearance are more unified and stable.

A process for thermally assembling a liferaft comprising the steps of:

s300, splicing the material sheets, and sequentially and edgewise heat-sealing by using a hot air heat sealing machine to form an upper floating tire 2, a lower floating tire 3, a raft bottom 11 and a canopy 12;

s400, assembling a raft body 1, moving an upper floating tire 2, a lower floating tire 3 and a raft bottom 11 to a rotary working table surface for alignment and fixation, sequentially moving aligned corners to 7.5KW under a high-frequency heat sealing machine for firm heat sealing, sequentially moving heat sealing edges between the upper floating tire 2, the lower floating tire 3 and the raft bottom 11 to 35KW under the high-frequency heat sealing machine for heat sealing connection, sleeving a tent post 12 on a knife edge mold, starting the heat sealing machine after alignment to heat seal the foot opening of the tent post 12 to the profiling tent post foot 4 or the tent post quick connecting piece 5, then rotating the knife edge mold for 180 degrees for heat sealing again, then heat sealing the foot opening of another tent post 12 by using the same method, heat sealing the profiling tent post foot 4 or the tent post quick connecting piece 5 on the upper floating tire 2 for assembly, and finally installing accessories to complete the assembly of the life raft;

s410, heat insulation protection, wherein heat insulation paper is arranged between the upper floating tire 2 and the lower floating tire 3 and between the lower floating tire 3 and the raft bottom 11 before the tent poles 12 are thermally sealed;

s420, air tightness detection is carried out, wherein the upper floating tire 2 and the lower floating tire 3 are required to be inflated before the raft body 1 is connected, the whole raft body 1 is required to be inflated after the raft body 1 is connected, a pressure meter is connected to an air supplementing and exhausting valve after the air inflation to detect the air pressure in the upper floating tire 2 and the lower floating tire 3, an air charging bottle supplements the air pressure to the pressure column of the pressure meter through an air inlet one-way valve to be 100mmHg high, the pressure reduction is not more than 5% after the air pressure is kept for 30min, and if the air pressure is more than 5%, the leakage position is required to be checked and remedied.

Before the production process of the life raft, the quality test experiments such as a tensile strength experiment, a tearing strength experiment, a heat seal strength experiment and an air valve fixing strength experiment of the TPU composite material are required to be carried out, so that the performance of the life raft assembled according to the working procedures can meet the use requirements.

The foregoing has outlined the basic principles, main features and advantages of the present application. It will be appreciated by persons skilled in the art that the present application is not limited to the embodiments described above, and that the embodiments and descriptions described herein are merely illustrative of the principles of the present application, and that various changes and modifications may be made therein without departing from the spirit and scope of the application, which is defined by the appended claims. The scope of protection of the present application is defined by the appended claims and equivalents thereof.

Claims

1. A life raft characterized by: the raft comprises a raft bottom, an upper floating tire and a lower floating tire, wherein the upper floating tire and the lower floating tire are matched and encircle the raft bottom to be connected to form a raft body, a canopy post for supporting a tent is arranged on the raft body, a profiling tent post foot or a canopy post quick connecting piece or both the profiling tent post foot and the canopy post quick connecting piece are arranged at the end part of the canopy post, the canopy post is suitable for being connected with the raft body through the canopy post quick connecting piece and the raft body in a quick dismounting and mounting manner, a non-inflatable boarding platform is arranged on one side of the raft body, and the non-inflatable boarding platform is suitable for helping personnel enter the raft body;

the profiling tent column leg comprises a column part, the tent column is suitable for being sleeved on the column part, a profiling groove is formed in the bottom of the column part, the upper floating tire is suitable for being embedded and installed in the profiling groove, the periphery of the profiling groove extends outwards to form a foot disc part, and the foot disc part is suitable for being attached to the outer surface of the upper floating tire; the outer side surface of the top of the columnar part is provided with a guide inclined surface along the circumferential direction, and the included angle between the guide inclined surface and the columnar part is alpha which is more than or equal to 0.5 degrees and less than or equal to 1.5 degrees; the foot plate portions have the same width projected on a plane perpendicular to the columnar portions.

2. A liferaft according to claim 1 wherein: the quick connector for the awning post comprises a connector and an insert body, wherein a gas channel is formed in the connector, the insert body is internally contracted to form a clamping part, clamping grooves matched with the clamping part are formed in the two ends of the connector along the circumferential direction respectively, the insert body is suitable for being sleeved with the two ends of the connector in a clamping manner, and the insert body is suitable for being connected with the raft body or the surface of the awning post.

3. A liferaft according to claim 2 wherein: the plug-in unit comprises a plug-in unit framework and a plug-in unit coating layer, wherein the plug-in unit coating layer is arranged on the plug-in unit framework in a covering manner, and the plug-in unit coating layer is suitable for being connected with the surface of the raft body or the awning column in a heat sealing manner; the outer side of the plug-in framework is provided with a connecting ring, and the plug-in coating layer is suitable for being coated on the connecting ring and is in heat sealing connection with the surface of the raft body or the awning column; a one-way seal is disposed within the gas passage and is adapted to cause the gas within the gas passage to flow in one direction.

4. A liferaft according to claim 1 wherein: the non-inflatable raft boarding platform comprises a platform main body, a connecting base and a platform sling, wherein the connecting base is connected with the lower floating tire and the platform main body, the platform sling is connected with the upper floating tire and the platform main body, and the connecting base and the platform sling are suitable for enabling the platform main body to be parallel to the raft body.

5. A liferaft according to claim 4 wherein: the connecting base comprises a first fixed end and a second fixed end, wherein an arc-shaped groove is formed in the first fixed end and is suitable for being attached and fixed to the outer surface of the lower floating tire, a clamping groove is formed in the second fixed end, and one side of the platform main body is installed and fixed in the clamping groove; the upper surface of one side, far away from the raft body, of the platform main body is provided with a containing cavity, a connector is arranged in the containing cavity, and the platform sling is connected with the connector; at least one groove is transversely formed in the upper surface of the platform main body.

6. A liferaft according to claim 1 wherein: the raft body or be provided with on the tarpaulin column and connect the disk seat, it has the disk seat cladding to connect the disk seat outside cover, be suitable for the installation on the connection disk seat and connect the pneumatic valve, the disk seat cladding is suitable for with the raft body or the surface heat seal connection of tarpaulin column.

7. A liferaft as claimed in claim 6 wherein: the valve seat coating layer is suitable for passing through the outer end of the valve seat and the reinforcing holes and connecting and coating two sides of the valve seat, and when the air valve is mounted on the connecting valve seat, the air valve is suitable for clamping the valve seat coating layer with the valve seat; at least one coating groove is formed in the outer side of the connecting valve seat along the circumferential direction, and the valve seat coating layer is suitable for being filled into the coating groove.

8. A process for thermally assembling a liferaft, comprising the steps of:

9. A process for thermally assembling a liferaft according to claim 8, wherein said step S400 comprises the steps of: