CN214029060U - Marine material lifting system - Google Patents

Abstract

The utility model relates to a marine goods and materials operating system, wherein, hatch board mechanism (1) sets up in the cabin top, and it can open and close hatch board (12) of cooperating with hatch (11) through the flexible of drive telescopic link (13), and lock the position of hatch board (12) when hatch board (12) is in the complete closure state or is in the complete open mode through hatch board locking Assembly (14); the lifting platform mechanism (2) is arranged in the cabin and comprises a lifting platform (21) and a driving device (22); the driving device (22) can drive the lifting platform (21) to ascend to the hatch. The lifting platform mechanism is arranged in the cabin, and the cabin cover can be quickly opened by driving the telescopic rod, and the cabin cover can be completely opened, so that the lifting platform mechanism is beneficial to carrying materials; the position of the hatch cover is locked through the hatch cover locking assembly, and the safety of cargo loading and unloading is guaranteed.

Description

Marine material lifting system

Technical Field

The utility model relates to a boats and ships corollary equipment technical field, concretely relates to marine goods and materials operating system.

Background

The cabin cover for the ship is a device for covering the cabin and enabling the cabin to form a closed space, and after the cabin is closed, materials in the cabin can be well protected. Conventional hatches typically employ both manual and automatic opening. Manual methods are mostly used for small boats. Whereas the automatic mode is generally used on large vessels. Traditional automatic mode of opening can only realize the part of hatch and open to open a bit to open speed very slowly, can not satisfy the user demand, traditional cabin cover's leakproofness is also not very high, does not have fire prevention, blast resistance more.

The hold is mainly used for storing materials. When the goods and materials need to be transported from the cabin to the deck, the goods and materials need to be hoisted out of the cabin through the hoisting device, and therefore the hoisting device is often installed on the deck. But some ship types do not allow exposed hoisting devices on the deck due to special considerations.

And traditional hoist device can't guarantee again that the goods and materials do not take place to rock when hoist and mount, and the stationarity and the security of goods and materials transportation are very important.

SUMMERY OF THE UTILITY MODEL

The utility model aims at the problem that prior art exists, provide a marine goods and materials operating system, it has overcome the drawback that can not set up hoist device on the deck, and the hatch board can be opened fast completely moreover and closed to can improve the security of goods and materials transportation.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a marine goods and materials operating system, it includes: a hatch cover mechanism and a lifting platform mechanism;

the hatch cover mechanism is arranged at the top of the cabin and comprises a hatch, a hatch cover, a driving telescopic rod and a hatch cover locking assembly; the hatch cover mechanism can open and close the hatch cover matched with the hatch through the extension and retraction of the driving telescopic rod, and locks the position of the hatch cover when the hatch cover is in a fully closed state or in a fully opened state through the hatch cover locking assembly;

the lifting platform mechanism is arranged inside the cabin; the lifting platform mechanism comprises a lifting platform and a driving device for driving the lifting platform to lift; when the driving device drives the lifting platform to ascend to the hatch, the upper plane of the lifting platform is flush with the deck around the hatch of the hatch cover mechanism.

More preferably, the hatch locking assembly comprises at least one opening locking assembly; the opening and locking assembly includes: the guide rod, the bracket and the first locking pin are connected with the drive; the bracket is fixedly arranged on the back of the hatch cover, and a rotating shaft is arranged on the bracket; the guide rod is provided with a guide elongated slot in which the rotating shaft is inserted; one end of the guide rod is rotatably connected with the hatch, and the other end of the guide rod is provided with a pin hole matched with the first locking pin; when the hatch is in a fully open state, the pin hole on the guide rod corresponds to the first locking pin.

More preferably, the hatch locking assembly comprises at least one closure locking assembly provided at an edge of the back face of the hatch; the closure locking assembly includes: the second locking pin is connected with the drive and matched with the hatch to realize locking; a slot matched with the second locking pin is formed in the side surface of the hatch; when the hatch cover is in a fully closed state, the second locking pin is inserted into the slot.

More preferably, the edge of the hatch is surrounded by a fireproof rope; and/or waterproof convex strips are arranged on the edge of the hatch opening, which is positioned on the inner side of the fireproof rope; and/or the edge of the back surface of the hatch cover is surrounded with a rubber gasket.

More preferably, the edge of the back surface of the hatch cover is also provided with a proximity switch for controlling the closing locking component; and the hatch is provided with an induction part correspondingly matched with the proximity switch.

More preferably, the lifting platform mechanism further comprises two vertical guide rails arranged in parallel; the left end and the right end of the inner side of the lifting platform are symmetrically provided with first limiting idler wheels; the two vertical guide rails are arranged between the two first limiting idler wheels; the first limiting roller acts on the vertical guide rail on the corresponding side.

More preferably, the left end and the right end of the inner side of the lifting platform are symmetrically provided with second limiting idler wheels; the second limiting idler wheel is arranged on the front side and the back side of the lifting platform opposite to the vertical guide rail; the rotating axis of the first limiting roller is perpendicular to the rotating axis of the second limiting roller.

More preferably, the marine material lifting system further comprises a plurality of positioning latch assemblies fixed to the hatch; the upper positioning bolt assembly comprises an upper bolt and an upper pushing oil cylinder for driving the upper bolt to move; the upper pushing oil cylinder is fixedly arranged at the hatch, and the pushing end of the pushing oil cylinder is fixedly connected with the upper bolt; and a plurality of bolt holes corresponding to the upper bolts are formed in the side surface of the lifting platform.

More preferably, the marine material lifting system further has a lower positioning mechanism; the lower positioning mechanism comprises at least one supporting column positioned on the outer side of the lifting platform; a supporting platform for supporting the lifting platform is arranged on the supporting column; the bottom in the outside of lift platform is equipped with and corresponds the spacing inserted block that forms spacing complex downwardly extending with the brace table.

More preferably, the lower positioning mechanism further comprises a lower positioning latch assembly; the lower positioning bolt component comprises a lower bolt and a lower push oil cylinder for driving the lower bolt to move; the lower push oil cylinder is fixedly arranged on the cabin, and the push end of the push oil cylinder is fixedly connected with the lower bolt;

and a plurality of bolt holes corresponding to the lower bolts are formed in the side surface of the lifting platform.

By the above-mentioned the technical scheme of the utility model can see out, the utility model discloses following technological effect has:

(1) the lifting platform mechanism is arranged in the cabin, and the cabin cover can be quickly opened by driving the telescopic rod, and the cabin cover can be completely opened, so that the lifting platform mechanism is beneficial to carrying materials;

(2) the utility model can lock the hatch cover in the completely open state by opening the locking component, thereby ensuring the safety;

(3) the hatch cover can be firmly fixed with the hatch through closing the locking component, so that the safety in the hatch is improved, and the hatch cover has good explosion-proof performance particularly when being used on a special ship type;

(4) the utility model utilizes the fire-proof rope to further improve the explosion-proof and fire-proof performance of the hatch cover; meanwhile, the rubber gasket is pressed on the waterproof raised lines, so that excellent waterproof sealing performance can be realized;

(5) the utility model utilizes the proximity switch to realize the automatic control of the closed locking component, and the automation degree is high;

(6) the utility model discloses well lift platform mechanism lets lift platform and vertical guide form spacing motion through first spacing gyro wheel to can effectively prevent to rock about lift platform, guarantee can guarantee that the goods and materials do not take place to rock when hoist and mount goods and materials, make things convenient for goods and materials transportation and operate steadily;

(7) the utility model discloses a second spacing pulley can further carry out the motion spacing to lift platform, further improves lift platform's stability and security, has guaranteed to guarantee that the goods and materials can not take place to rock when hoist and mount the goods and materials, makes things convenient for the transportation of goods and materials and operates steadily;

(8) the utility model discloses well lift platform can bear the weight of the travelling bogie, and when lift platform rises to the hatch, lift platform can be flushed with peripheral deck, makes things convenient for the removal of travelling bogie;

(9) the utility model can realize the auxiliary support of the lifting platform through the upper positioning bolt component, and ensure the safety and stability of the unloading of materials;

(10) the utility model can realize the positioning and bearing of the lifting platform at the bottom of the cabin through the lower positioning mechanism, and ensure the stability of the material when loading; meanwhile, the stability of the lifting platform when the lifting platform is not used is also ensured;

(11) the utility model can further improve the positioning effect of the lifting platform at the bottom of the cabin through the matching of the limiting insert block and the supporting platform;

(12) the utility model discloses well drive arrangement adopts the assembly pulley to through the hydraulic cylinder drive, it is safe high-efficient.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural view of the middle hatch cover mechanism of the present invention;

FIG. 3 is a schematic structural view of the driving mechanism and the unlocking assembly of the present invention;

fig. 4 is a schematic structural view of the middle closing locking assembly of the present invention.

Fig. 5 is a schematic structural diagram of the middle hatch of the present invention;

fig. 6 is a front perspective view of the lifting platform mechanism of the present invention;

fig. 7 is a back perspective view of the lifting platform mechanism of the present invention;

fig. 8 is a top view of the lifting platform mechanism of the present invention;

fig. 9 is a schematic structural view of the lifting platform and the supporting column of the present invention.

In the drawings:

a hatch cover mechanism 1; a hatch 11, a hatch cover 12, a driving telescopic rod 13, a hatch cover locking assembly 14, a fireproof rope 15 and a proximity switch 16; a waterproof rib 112; open locking assembly 141, close locking assembly 142; a guide bar 141-1, a bracket 141-2, a first locking pin 141-3; a second locking pin 142-1; a lifting platform mechanism 2; a lifting platform 21, a driving device 22 and a vertical guide rail 23; a limit cushion block 211; the pulley block 221 and the hydraulic oil cylinder 222; a first limit roller 4; a second limiting roller 5; an upper positioning bolt assembly 6; a lower positioning mechanism 7; a support column 71 and a lower positioning pin assembly 72.

Detailed Description

The technical solution of the present invention will be further described in detail with reference to fig. 1.

Examples

The utility model provides a marine goods and materials operating system, its structure is shown in 1-9, and this marine goods and materials operating system is including setting up cabin cover mechanism 1 at cabin top to and set up the lift platform mechanism 2 inside the cabin.

The hatch mechanism 1 can open and close the hatch, which is fitted to the hatch, by driving the telescopic rod to expand and contract, and lock the position of the hatch when the hatch is in a fully closed state or when the hatch is in a fully open state, by means of a hatch locking assembly. When the lifting platform mechanism 2 drives the lifting platform to ascend to the hatch opening by the driving device, the upper plane of the lifting platform 1 is flush with the deck around the hatch opening of the hatch cover mechanism 1.

The structure and the function of each component in the marine material lifting system are as follows:

the hatch cover mechanism 1 comprises a hatch 11, a hatch cover 12, a drive telescopic rod 13 and a hatch cover locking assembly 14. The hatch 12 engaged with the hatch 11 can be opened and closed by driving the telescopic rod 13 to be telescopic. The position of the hatch 12 is locked by the hatch locking assembly 14 when the hatch 12 is in a fully closed state or when the hatch 12 is in a fully open state.

Hatch 11 one side is through axis of rotation and shaft liner connection and hatch 11 complex hatch board 12, and drive telescopic link 13 is two, is the symmetry setting, and every drive telescopic link 13's both ends rotate with the back of hatch 11 and hatch board 12 respectively and are connected, can open and close hatch board 12 through the flexible of drive telescopic link. The driving telescopic rod 13 can be controlled by a hydraulic oil cylinder, a pneumatic cylinder or a screw rod mechanical structure driven by electric power. The hatch locking assembly 14 comprises two symmetrically arranged opening locking assemblies 141 and a plurality of closing locking assemblies 142; the opening lock assembly 141 has one end connected to the hatch 12 and the other end connected to the hatch 11 for locking the position of the hatch 12 when the hatch 12 is in the fully opened state. The closure locking assembly 142 of the hatch locking assembly 14 is located at the edge of the hatch 2 for locking the position of the hatch 12 when the hatch 12 is in the fully closed state.

The above opening locking assembly 141 includes a guide bar 141-1, a rotation shaft, a bracket 141-2, and a first locking pin 141-3 connected to a driving. One end of the guide rod 141-1 is rotatably connected with the hatch 11, and the other end of the guide rod 141-1 is provided with a pin hole which can be matched with the first locking pin 141-3; the pin holes on the guide rod 141-1 correspond to the first locking pins 141-3 when the hatch 12 is fully opened. A guide long groove is arranged on the guide rod 141-1; the bracket 141-2 is fixedly arranged on the back of the hatch cover 12; the bracket 141-2 is rotatably provided with a rotating shaft; the rotation shaft can be inserted into the guide long groove of the guide rod 141-1. The driving of the opening locking assembly 141 connected to the first locking pin 141-3 may be a hydraulic cylinder, a pneumatic cylinder or a screw-and-screw mechanical structure driven by electricity.

In operation, with the hatch cover 12 opened, the rotating shaft on the bracket 141-2 moves in the guide long groove of the guide rod 141-1; when the hatch cover 12 is completely opened, the locking drive is opened to drive the first positioning pin 141-3 to be inserted into the pin hole on the guide rod 141-1, so that the hatch cover 12 can be locked in a completely opened state, and the safety of personnel entering and exiting the cabin is ensured.

The aforementioned closure locking assembly 142 is provided at the edge of the back face of the hatch 12; the closing locking assembly 142 comprises a second locking pin 142-1 connected with a closing locking drive and capable of realizing locking in cooperation with the hatch 11; a slot is provided at a side corresponding to the hatch 11 to be engaged with the second locking pin 142-1. The drive in the closure locking assembly 142 to which the second locking pin 142-1 is connected may be a hydraulic cylinder, a pneumatic cylinder, or a lead screw mechanism driven by electricity.

After the hatch cover 12 is closed, the second locking pin 142-1 is driven by the closing locking drive to be inserted into the lower portion of the hatch 11, so that the hatch cover 12 can be firmly fixed with the hatch 11, meanwhile, the edge of the back face of the hatch cover 12 is provided with the rubber gasket 121 to press the inner side of the hatch 11 to be provided with the waterproof raised line 112 to ensure waterproof sealing performance, and the edge of the back face of the hatch cover 12 is provided with the fireproof rope 15 to ensure explosion and fire resistance.

The elevating platform mechanism 2 includes an elevating platform 21, a driving device 22, and a vertical guide rail 23.

Lifting platform 1 is used for bearing the travelling bogie, and when lifting platform 1 rose to the hatch, lifting platform 1's last plane flushed with the peripheral deck of hatch, made things convenient for travelling bogie's removal. The two vertical guide rails 23 are positioned on one side of the hatch cover 12 rotatably connected with the hatch 11 and are fixed in the cabin in parallel. The elevating platform 21 is driven by a driving device 22 and moves up and down along a vertical guide rail 23.

In order to guarantee the laminating of lift platform 21 and vertical guide 23, the utility model discloses still set up first spacing gyro wheel 4 and the spacing gyro wheel 5 of second and carry out multi-direction spacing to lift platform 21. Four first limiting idler wheels 4 arranged at the left end and the right end of the inner side of the lifting platform 21 are in contact with the outer side face of the vertical guide rail 23, four second limiting idler wheels 5 arranged at the left end and the right end of the inner side of the lifting platform 21 are in contact with the front face and the back face of the vertical guide rail 23, multi-directional limiting of the lifting platform 21 is achieved, overturning moment caused by ship motion and material unbalance loading is overcome, and stability and smoothness of the lifting platform 21 in up-and-down operation along the vertical guide rail 23 are guaranteed. The structure and function of the first limiting roller 4 and the second limiting roller 5 are as follows:

the number of the first limiting idler wheels 4 is four, the first limiting idler wheels are symmetrically arranged at the left end and the right end of the inner side of the lifting platform 21 in a rotating mode respectively, the first limiting idler wheels are in contact with the outer side faces of two vertical guide rails 23 arranged between the four first limiting idler wheels 4, and the first limiting idler wheels 4 act on the vertical guide rails 23 on the corresponding sides. Let lift platform 21 and vertical guide 23 form the spacing motion through this first spacing gyro wheel 4, can overcome because lift platform 21 unbalance loading forms the moment of overturning to can prevent effectively that lift platform from rocking about, guarantee that the transportation of goods and materials is steady.

The number of the second limiting rollers 5 is four, the four second limiting rollers are respectively and symmetrically arranged at the left end and the right end of the inner side of the lifting platform 21 in a rotating mode, are arranged on a plane of the lifting platform 21, which is just opposite to the vertical guide rails 23, and are in contact with the front and back surfaces of the two vertical guide rails 23 arranged between the four second limiting rollers 5. The rotation axis of the second limiting roller 5 is perpendicular to the rotation axis of the first limiting roller 4. Through this spacing gyro wheel 5 of second, can further carry out spacing motion to lift platform 21, can overcome because lift platform 21 dead weight and the overturning moment of goods and materials formation, further improve lift platform 21's stability and security.

A plurality of first bolt holes are formed in the side surface of the lifting platform 21. Meanwhile, the marine lifting system is also provided with a plurality of upper positioning bolt components 6 which are fixedly arranged on the hatch; the upper positioning bolt assembly 6 comprises an upper bolt and an upper pushing oil cylinder for driving the upper bolt to move. Wherein the upper pushing oil cylinder is fixedly arranged at the hatch, and the pushing end of the upper pushing oil cylinder is fixedly connected with the upper bolt; the upper bolts correspond to the first bolt holes arranged on the side surface of the lifting platform 21 one by one. Through being equipped with a plurality of first bolt holes and corresponding respectively and being fixed in the cooperation of last location bolt subassembly 6 on the hatch and using in lift platform 21 side, can realize the auxiliary stay to lift platform 21, guarantee lift platform 21 last plane and hatch upper flat parallel and level, and then security and stability when guaranteeing the uninstallation of goods and materials.

The bottom outside the lifting platform 21 is provided with a plurality of downwardly extending limiting cushion blocks 211. The marine material lifting system further comprises a lower positioning mechanism 7; this lower positioning mechanism 7 is including being located a plurality of support columns 71 (three support column 71 is given in the figure) in the lift platform 1 outside, and each support column 71 is fixed in the cabin bottom, all is equipped with the brace table that is used for bearing lift platform 21 on it, and each brace table forms spacing cooperation with a plurality of downwardly extending's that lift platform 21 outside bottom was equipped with spacing cushion 211 one-to-one. The supporting platform arranged on the cabin bottom cabin wall structure can realize the positioning and supporting of the lifting platform 21 at the bottom of the cabin, and the stability of the material loading is ensured.

The lower positioning mechanism 7 further comprises a lower positioning latch assembly 72 fixed to the cabin. The lower positioning bolt assembly 72 comprises a lower bolt and a lower push cylinder for driving the lower bolt to move; wherein the lower pushing oil cylinder is fixedly arranged on the cabin, and the pushing end of the lower pushing oil cylinder is fixedly connected with the lower bolt; the lower bolts correspond to a plurality of second bolt holes arranged on the side surface of the lifting platform 21 one by one. Correspondingly, the side surface of the lifting platform 21 is provided with a plurality of second bolt holes which are in one-to-one correspondence with the lower bolts. A secure locking of the lifting platform 21 at the bottom of the cabin when not in use is achieved by the lower positioning means 7.

The driving device 22 includes pulley blocks 221 symmetrically disposed on the left and right sides of the lifting platform, and a hydraulic cylinder 222 for pulling the pulley blocks 221. The pulley block 221 comprises a fixed pulley and a movable pulley block; the fixed pulleys are arranged near the hatch and the pit, and the movable pulley block and the hydraulic oil cylinder 222 are fixedly connected at the bottom of the cabin; the driving device 22 drives the lifting platform 21 to move up and down along the vertical guide rail 23 through the traction pulley block 221, so that the lifting platform 21 can transport materials between the cabin and the weather deck. The driving device 3 is driven by a hydraulic oil cylinder pulley block, and is safe and efficient.

In order to further improve the explosion and fire resistance of the hatch cover, a fire line 15 is provided around the edge of the hatch 11.

In order to achieve excellent waterproof sealing, a waterproof rib 112 is provided around the edge of the hatch 11 on the inner side of the fire-proof rope 15. Meanwhile, the rubber gasket is pressed on the waterproof raised line 112, so that excellent waterproof sealing performance can be realized.

In order to increase the degree of automation of the hatch, a proximity switch 16 for controlling the closure locking assembly 142 in the hatch locking assembly 14 is also provided at the edge of the rear face of the hatch 12; the hatch 11 is provided with an induction part correspondingly matched with the proximity switch 16, so that the moving range of the closing locking component 14 can be automatically controlled, and the automatic control of the closing locking component 14 is realized, the proximity switch 16 is a magnetic switch, an inductance switch or a capacitance switch, when the induction part of a magnetic material or a ferrite material is close to the induction surface of the proximity switch 16, the internal electric element of the proximity switch 16 is switched on and off, and a control signal is output.

Taking the loaded goods as an example, the working principle of the marine material lifting system is as follows:

when the hatch cover locking device works, the hatch cover 12 is in a fully-opened state, the position of the hatch cover 12 is locked through the hatch cover locking assembly 14, the lifting platform 21 is driven by the driving device 22 to ascend, when the upper plane of the lifting platform is level with the deck around the hatch, the bolts on the upper positioning bolt assembly 6 extend into a plurality of first bolt holes formed in the side face of the lifting platform 21, and the moving trolley for loading cargoes moves onto the lifting platform 21. Then, go up positioning pin subassembly 6 and go up the bolt and withdraw from a plurality of first bolt holes that are equipped with from the side of lift platform 21, lift platform 21 is driven by drive arrangement 22 and descends, carry the thing travelling car and bring into the cabin, the supporting bench that the bottom outside lift platform 21 was equipped with a plurality of spacing cushion 211 that downwardly extend and dropped to support column 71 is equipped with, the bolt stretches into a plurality of second bolt holes that are equipped with in the side of lift platform 21 and locks down positioning pin subassembly 72 simultaneously, then remove the thing travelling car, it moves to empty load travelling car and moves to lift platform 21 on, so circulate, until the goods transports completely to the cabin. Finally, the hatch 12 is closed, and the position of the hatch 12 is locked by the hatch locking assembly 14 when the hatch 12 is in the closed open state.

The principle of operation when unloading cargo from the hold is similar to that described above for loading cargo.

Although the present invention has been described in connection with the preferred embodiments, the embodiments are not intended to limit the present invention. Any equivalent changes or modifications made without departing from the spirit and scope of the present invention also belong to the protection scope of the present invention. The scope of protection of the invention should therefore be determined with reference to the claims that follow.

Claims (10)

1. A marine material lifting system, said marine material lifting system comprising: a hatch cover mechanism (1) and a lifting platform mechanism (2); the method is characterized in that:

the hatch cover mechanism (1) is arranged at the top of the cabin and comprises a hatch (11), a hatch cover (12), a driving telescopic rod (13) and a hatch cover locking assembly (14); the hatch cover mechanism (1) can open and close a hatch cover (12) matched with the hatch (11) by driving the telescopic rod (13) to stretch and retract, and locks the position of the hatch cover (12) when the hatch cover (12) is in a fully closed state or in a fully opened state by a hatch cover locking assembly (14);

the lifting platform mechanism (2) is arranged inside the cabin; the lifting platform mechanism (2) comprises a lifting platform (21) for bearing goods and a driving device (22) for driving the lifting platform to lift; the driving device (22) can drive the lifting platform (21) to ascend to the hatch (11).

2. The marine material lifting system of claim 1, wherein:

the hatch locking assembly (14) comprises at least one opening locking assembly (141);

the opening locking assembly (141) comprises: a guide rod (141-1), a bracket (141-2) and a first locking pin (141-3) connected with a drive;

the bracket (141-2) is fixedly arranged on the back of the hatch cover (12), and a rotating shaft is arranged on the bracket; the guide rod (141-1) is provided with a guide long groove in which the rotating shaft is inserted;

one end of the guide rod (141-1) is rotatably connected with the hatch (11), and the other end of the guide rod (141-1) is provided with a pin hole matched with the first locking pin (141-3); when the hatch cover (12) is in a fully opened state, the pin hole on the guide rod (141-1) corresponds to the first locking pin (141-3).

3. The marine material lifting system of claim 1, wherein:

the hatch locking assembly (14) comprises at least one closure locking assembly (142) provided at an edge of a rear face of the hatch (12);

the closure locking assembly (142) includes: a second locking pin (142-1) which is connected with the drive and is matched with the hatch (11) to realize locking;

the side surface of the hatch (11) is provided with a slot matched with the second locking pin (142-1);

when the hatch cover (12) is in a fully closed state, the second locking pin (142-1) is inserted into the insertion groove.

4. The marine material lifting system of claim 1, wherein:

a fireproof rope (15) is arranged around the edge of the hatch (11);

and/or the presence of a gas in the gas,

waterproof convex strips (112) are arranged on the edge of the hatch (11) and positioned on the inner side of the fireproof rope (15);

and/or the presence of a gas in the gas,

and a rubber gasket (121) is arranged around the edge of the back surface of the hatch cover (12).

5. The marine material lifting system of claim 1, wherein:

the edge of the back surface of the hatch (12) is also provided with a proximity switch (16) for controlling the closing locking component (142);

and the hatch (11) is provided with an induction part correspondingly matched with the proximity switch (16).

6. The marine material lifting system of claim 1, wherein:

the lifting platform mechanism (2) also comprises two vertical guide rails (23) which are arranged in parallel; the left end and the right end of the inner side of the lifting platform (21) are symmetrically provided with first limiting idler wheels (4); the two vertical guide rails (23) are arranged between the two first limiting rollers (4); the first limiting roller (4) acts on the vertical guide rail (23) on the corresponding side.

7. The marine material lifting system of claim 6, wherein:

the left end and the right end of the inner side of the lifting platform (21) are symmetrically provided with second limiting idler wheels (5); the second limiting idler wheels (5) are arranged on the front and back surfaces, opposite to the vertical guide rail (23), of the lifting platform (21); the rotating axis of the first limiting roller (4) is vertical to the rotating axis of the second limiting roller (5).

8. The marine material lifting system of claim 1, wherein:

the marine material lifting system also comprises a plurality of positioning bolt assemblies (6) fixed on the hatchway opening (11);

the upper positioning bolt assembly (6) comprises an upper bolt and an upper pushing oil cylinder for driving the upper bolt to move; the upper pushing oil cylinder is fixedly arranged at the hatch (11), and the pushing end of the pushing oil cylinder is fixedly connected with the upper bolt; the side of the lifting platform (21) is provided with a plurality of bolt holes corresponding to the upper bolts.

9. The marine material lifting system of claim 1, wherein:

the marine material lifting system is also provided with a lower positioning mechanism (7);

the lower positioning mechanism (7) comprises at least one supporting column (71) positioned at the outer side of the lifting platform (21); a supporting platform for supporting the lifting platform (21) is arranged on the supporting column (71);

the bottom of the outer side of the lifting platform (21) is provided with a downward extending limiting insertion block (211) which corresponds to the support platform to form limiting fit.

10. A marine material lifting system according to claim 9, wherein:

the lower positioning mechanism (7) further comprises a lower positioning bolt assembly (72); the lower positioning bolt assembly (72) comprises a lower bolt and a lower push oil cylinder for driving the lower bolt to move; the lower push oil cylinder is fixedly arranged on the cabin, and the push end of the push oil cylinder is fixedly connected with the lower bolt;

the side of the lifting platform (21) is provided with a plurality of bolt holes corresponding to the lower bolts.

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